CN117383500A - A new energy bus coolant filling device - Google Patents

Abstract

The invention relates to the technical field of new energy bus cooling liquid adding, and discloses a new energy bus cooling liquid filling device, which comprises a vehicle body, a liquid storage tank and a filling mechanism, wherein the filling mechanism comprises an extension ladder and a liquid outlet pipe; the problem that the existing new energy electric bus cooling liquid filling operation is difficult is solved.

Description

A new energy bus coolant filling device

Technical field

The invention relates to the technical field of new energy vehicle coolant addition, and specifically relates to a new energy bus coolant filling device.

Background technique

New energy buses refer to buses that use new power systems and are driven entirely or mainly by new energy sources. Among them, new energy electric buses whose on-board power batteries provide electric energy for driving are widely used because of their energy saving and environmental protection advantages. In order to ensure the driving safety of new energy electric buses and extend the operating life of the power battery, new energy electric buses are generally equipped with a power battery liquid cooling system to cool the power battery through coolant (i.e. antifreeze); however, Due to the high cost of independent cold source devices and the need for independent installation space, which has a greater impact on the bus body structure, electric buses mostly use air-conditioning integrated cold source devices. The cost of air-conditioning integrated cold source devices is low, but their The liquid-cooling pipeline needs to be replaced by the air-conditioning liquid-cooling plate, so the expansion tank of the power battery liquid-cooling system must be installed on the roof of the car, which also brings trouble to the filling of coolant in the power battery cooling system.

The traditional coolant filling operation requires the operator to climb to the roof from the sunroof of the car, and manually carry the coolant to the roof for filling. During the process of carrying coolant, coolant leakage is easy to occur, causing damage to the interior floor, A slippery roof may cause safety accidents and create operational safety risks.

Contents of the invention

The present invention is intended to provide a new energy bus coolant filling device to solve the problem of difficulty in the existing new energy electric bus coolant filling operation.

In order to achieve the above object, the present invention adopts the following technical solution: a new energy bus coolant filling device, including a vehicle body, a liquid storage tank and a filling mechanism. The filling mechanism includes a telescopic ladder and a liquid outlet pipe. The liquid storage tank Connected to the vehicle body, the telescopic ladder is rotatably connected to the vehicle body. One end of the liquid outlet pipe is connected to the liquid storage tank, and the other end of the liquid outlet pipe passes through the telescopic ladder and extends to the outside of the telescopic ladder.

The beneficial effects of this solution are: setting the telescopic ladder and the liquid storage tank on the vehicle body, pushing the vehicle body to move can facilitate the operator to move the coolant filling device to the work site at any time, and at the same time, a liquid outlet pipe and a liquid storage tank are provided The tank is connected, and the liquid outlet pipe extends beyond the top of the telescopic ladder. When filling the coolant, the operator climbs to the roof of the vehicle through the telescopic ladder, and then pulls out the liquid outlet pipe from the top of the telescopic ladder. The roof expansion water tank is used for filling coolant, thereby solving the existing problem of difficult filling operations.

1. Design and development companies based on new energy electric buses focus on the development of power battery performance, charging efficiency, electric drive and other technologies. They invest very little in the method of filling the power battery coolant in daily use in the later period, resulting in driver or It is difficult for other staff to replenish the coolant, and there are potential safety hazards of slipping due to spilled coolant. As well as practical operating experience, this solution breaks away from the constraints of the existing operating modes and provides a collective handling, climbing and It is a device with functions such as accurate liquid filling. The car body equipped with coolant plays a limiting and fixing role on the telescopic ladder, thereby ensuring the safety when climbing. No additional personnel are required to cooperate to ensure the safety during use of the telescopic ladder; and through the telescopic ladder Stretch and unfold the liquid outlet pipe so that the liquid outlet pipe can go up to the roof of the car and then be aligned with the expansion tank for accurate filling, which can solve the problem of safety accidents caused by coolant spillage. The components on the device work closely together, so that the coolant filling operation can be performed safely by one person, which greatly reduces the difficulty of filling and lays the foundation for the further development and promotion of electric buses.

2. Set the liquid outlet pipe inside the telescopic ladder so that the telescopic ladder can shield the coolant in the liquid outlet pipe. This can effectively prevent light from affecting the performance of the coolant during liquid filling and daily storage. influence to ensure that the coolant can perform normally after filling.

3. This method can align the liquid outlet pipe with the expansion water tank of the cooling system, thereby avoiding the existing method of carrying refrigerant that is prone to leakage of refrigerant, causing the floor and roof of the car to become slippery, causing safety accidents and causing Work safety risks to ensure safer operations.

4. This device has wide applicability and can be adapted to the filling of high-level coolant in various types of overhead electric battery-powered buses, including Yutong, King Long, Foton, Xin Hengtong, etc., and is popular.

5. The heating method of this device is more energy-saving and environmentally friendly. It is no longer necessary to climb to the roof of the car through the sunroof to refill the coolant, which avoids stepping on and soiling the seats in the car. At the same time, the liquid outlet pipe can be aligned with the inside of the roof expansion tank. Perform filling operations to avoid spilling and wasting coolant.

6. This device is labor-saving in operation and does not require manpower to transport the refrigerant, which reduces the labor intensity of the operator and further effectively reduces safety risks; at the same time, the liquid outlet pipe is set in the telescopic ladder, and during the process of stretching the telescopic ladder The liquid outlet pipe can be stretched, thereby reducing the difficulty of using the device; and during the coolant filling process, the inside of the liquid outlet pipe will become hardened when filled with coolant, and the hardened liquid outlet pipe will help strengthen the tension. The strength of the extended telescopic ladder ensures safe operation.

7. It can improve the refilling efficiency, and the bicycle maintenance time is shorter than the traditional replenishment and refilling method, which can better ensure that the rehydration operation is completed in a timely manner and the bus is replenished.

Preferably, the filling mechanism further includes a liquid injection gun and a hose reel, the liquid outlet pipe is wound around the hose reel, and the liquid injection gun is connected to one end of the liquid outlet pipe extending outside the telescopic ladder.

Preferably, the filling mechanism also includes a liquid pump and a power part, the power part is connected to the liquid pump, the liquid outlet pipe is connected to the liquid outlet end of the liquid pump, and there is a gap between the liquid inlet end of the liquid pump and the liquid storage tank. There is a liquid inlet pipe for communication.

Preferably, the vehicle body includes a liquid storage part and a liquid injection part, a baffle is provided between the liquid storage part and the liquid injection part, and the height of the liquid storage part is greater than the height of the liquid injection part, and the liquid storage tank is located in the liquid storage part. , and the top flip of the liquid storage tank is connected to a first cover plate; the hose reel, liquid pump and power parts are all located in the liquid injection part, and the top of the liquid injection part is provided with a second cover plate and a connecting plate, and the telescopic ladder rotates It is connected between the second cover plate and the connecting plate, and the second cover plate is provided with a rotation hole.

Preferably, the inner seal of the liquid injection part is provided with an angle steel, and the angle steel is located between the reel, the power part and the liquid pump.

Preferably, a buffer pad is provided on the top of the side of the liquid storage part close to the telescopic ladder.

Preferably, the filling mechanism also includes a dust cover, the bottom of the dust cover is connected to the connecting hole, and the top of the dust cover is connected to the bottom of the telescopic ladder.

Preferably, a suction filter valve is provided between the liquid inlet pipe and the liquid storage tank.

Preferably, the buffer pad is L-shaped, and the length of the buffer pad is the same as the length of the first cover plate.

Description of drawings

Figure 1 is a three-dimensional view of the telescopic ladder during contraction according to Embodiment 1 of the present invention;

Figure 2 is a three-dimensional view of the telescopic ladder in Embodiment 1 of the present invention when it is deployed;

Figure 3 is a three-dimensional view of the connecting hole in Embodiment 1 of the present invention;

Figure 4 is a schematic structural diagram of the interior of the vehicle body in Embodiment 1 of the present invention;

Figure 5 is a schematic structural diagram of a dust cover according to Embodiment 2 of the present invention;

Figure 6 is a schematic structural diagram of a cushion pad according to Embodiment 4 of the present invention.

Detailed ways

The following is further detailed through specific implementation methods:

The reference numerals in the drawings of the description include: vehicle body 1, liquid storage part 11, first cover 111, cushion pad 112, long limb 113, short limb 114, liquid injection part 12, connecting plate 121, second Cover plate 122, rotating hole 123, angle steel 14, power button 15, pump switch 16, charging port 17, power display 18, liquid storage tank 2, sealing cover 21, telescopic ladder 3, rotating plate 31, fixed tube 32, telescopic Pipe 33, ladder plate 34, telescopic button 341, reinforcement plate 35, lithium battery 4, diaphragm pump 5, automatic telescopic water drum 6, liquid outlet pipe 7, liquid injection gun 71, liquid inlet pipe 8, dust cover 9.

Example 1

Embodiment 1 is basically as shown in Figures 1-4. A new energy bus coolant filling device as shown in Figure 1 includes a car body 1 and a filling mechanism. Four rollers are provided at the bottom of the car body 1. It is convenient for the device to be moved to different buses for coolant filling operations. At the same time, the four rollers are connected with anti-slip devices. The anti-slip devices ensure the stability of the device during operation and ensure the safety of operators. The vehicle body 1 is hollow inside and includes a liquid storage part 11 and a liquid injection part 12, and a baffle is provided between the liquid storage part 11 and the liquid injection part 12 for separation; a first cover 111 is provided on the top of the liquid storage part 11, and the liquid injection part 12 is provided with a first cover 111 on the top. A second cover 122 is provided on the top of the liquid part 12 , and the height of the liquid storage part 11 is greater than the height of the liquid injection part 12 . The filling mechanism is installed on the movable car body 1 to refill the power battery cooling system on the roof with coolant. The filling mechanism includes a telescopic ladder 3 and a liquid outlet pipe 7, one end of which is connected There is a liquid storage tank 2, and the other end of the liquid outlet pipe 7 passes through the telescopic ladder 3 and extends beyond the top of the telescopic ladder 3. Both the telescopic ladder 3 and the vehicle body 1 are made of metal, and the metal material is of high quality, further ensuring the use of the device. When filling the coolant, the anti-slip device further prevents the vehicle body 1 from moving in addition to preventing the vehicle body 1 from moving.

By arranging the telescopic ladder 3 and the liquid storage tank 2 on the movable body 1 and then filling the coolant through the liquid outlet pipe 7, it solves the problem of filling the roof coolant of existing new energy electric buses. The operation dilemma requires staff to climb the car window or lay additional ladders and other complicated and dangerous steps to complete the operation; as an indispensable part of the current urban public transportation, the development of new energy electric buses has good market prospects, but most of them The design and development companies of new energy electric buses all focus on the development of power battery performance, charging efficiency, electric drive and other technologies. They invest very little in the method of filling the power battery coolant in daily use in the later period, which in turn causes the driver or other It is difficult for staff to replenish the coolant, and there is a safety risk of slipping due to spilled coolant. How to easily refill the coolant on the roof has become a pain point for users of new energy electric buses.

Based on actual operating experience and breaking away from the constraints of existing operating modes, this embodiment provides a device that integrates functions such as transportation, climbing, and accurate liquid addition. The vehicle body 1 is equipped with coolant and a telescopic ladder 3, and the liquid outlet pipe 7 is Extend through the interior of the telescopic ladder 3 to outside the top of the telescopic ladder 3 . The car body 1 carrying coolant plays a limiting and fixing role on the telescopic ladder 3, thereby ensuring safety when climbing. No additional personnel are required to cooperate to ensure the safety during use of the telescopic ladder 3; while the telescopic ladder 3 is stretched and unfolded to ensure safety during climbing. The liquid outlet pipe 7 is stretched so that the liquid outlet pipe 7 can go up to the roof of the vehicle and then be aligned with the expansion tank for accurate filling, thereby solving the problem of safety accidents caused by coolant spillage. The components on the device work closely together, so that the coolant filling operation can be performed safely by one person, which greatly reduces the difficulty of filling and lays the foundation for the further development and promotion of electric buses.

As shown in Figure 2, the telescopic ladder 3 includes two fixed tubes 32, a plurality of telescopic tubes 33 and a plurality of ladder boards 34. The telescopic tubes 33 are telescopically connected to the fixed tubes 32 on both sides or the telescopic tubes 33 adjacent below. Several ladders 34 are welded and fixedly connected between the telescopic tubes 33 on both sides in sequence, and telescopic buttons 341 are provided at both ends of each ladder 34. By pressing the telescopic buttons 341, the telescopic tubes 33 can be pulled out or retracted. To realize the expansion and retraction of the telescopic ladder 3, the structure of the telescopic ladder 3 is an existing technology and will not be described again in this embodiment. In addition, in order to improve the structural strength of the telescopic ladder 3, a reinforcing plate 35 is welded and fixed between the bottoms of the two fixed tubes 32 to further ensure the safety of the device.

As shown in Figure 3, the telescopic ladder 3 is rotatably connected to the top of the vehicle body 1. The specific method of rotary connection is: welding and fixing a connecting plate 121 on the top of the liquid injection part 12. The length of the connecting plate 121 is shorter than the length of the second cover plate 122. , two hinge connectors are provided at one end of the connecting plate 121 that contacts the second cover plate 122, and a rotating plate 31 is welded and fixed between the two fixed tubes 32. The rotating plate 31 is connected to the two hinges through bolts. Just connect the page connector. The hinge connection is used to realize the rotational connection between the telescopic ladder 3 and the vehicle body 1, and the connecting plate 121 is fixed with bolts to realize the detachable connection of the telescopic ladder 3, which facilitates the later replacement or maintenance of the telescopic ladder 3. The second cover 122 is detachably connected to the liquid injection part 12 of the vehicle body 1 through screws, and two rotation holes 123 are opened at one end of the second cover 122 close to the connecting plate 121. The two rotation holes 123 are two fixed rods. The tube 32 provides room for rotation at its base during folding and unfolding.

As shown in Figure 4, the liquid storage tank 2 is fixed in the liquid storage part 11 by screws. The top of the liquid storage tank 2 is provided with a liquid replenishing port. A sealing cover 21 is threadedly connected to the liquid replenishing port. After removing the sealing cover 21, the liquid replenishing port can be opened to the reservoir. The liquid tank 2 replenishes the coolant. Under the condition of being ready to refill multiple buses at any time, the weight of the liquid storage tank 2 is ensured so that the liquid storage tank 2 plays a counterweight role while storing the coolant, thereby To further ensure the stability of the filling work and the safety of the operator; after the coolant replenishment is completed, the sealing cover 21 must be closed on the replenishing port in time to avoid oxidation caused by contact between the coolant and air and affecting performance.

There is a liquid pump and a pipe reel inside the liquid injection part 12. The liquid pump is fixed on the bottom surface of the liquid injection part 12 through screws, and the diaphragm pump 5 is connected with a power part. The power part provides power for the liquid pump to work. In this implementation In this example, the liquid pump is a diaphragm pump 5, and the power component is a lithium battery 4; the lithium battery 4 is fixedly connected to the inner wall of the liquid injection part 12, and as shown in Figure 1, there are power buttons 15 and 15 on the outside of the vehicle body 1. The pump switch 16, the charging port 17 and the power display 18, and the power button 15 realize the power on and off between the lithium battery 4 and the diaphragm pump 5. The pump switch 16 is connected to the diaphragm pump 5 and controls the start and stop of the diaphragm pump 5. The charging port 17 is used to charge the lithium battery 4, and the power display 18 is connected to the lithium battery 4 to facilitate observation of the remaining power of the lithium battery 4 and charging in a timely manner. There is a liquid inlet pipe 8 between the liquid inlet end of the diaphragm pump 5 and the liquid storage tank 2. The liquid inlet pipe 8 is connected to the bottom of the liquid storage tank 2 through a flange. There is a through hole on the baffle, and the liquid inlet pipe 8 The liquid storage tank 2 and the diaphragm pump 5 are connected through the through hole.

One end of the liquid outlet pipe 7 is connected to the liquid outlet end of the diaphragm pump 5, and after the liquid outlet pipe 7 is wound around the hose reel, the other end passes through the inside of the fixed pipe 32 and the telescopic pipe 33 on one side of the telescopic ladder 3, and extends to outside the telescopic tube 33 at the top. The liquid outlet pipe 7 is arranged inside the telescopic ladder 3, so that the telescopic ladder 3 has a light-shielding effect on the coolant in the liquid outlet pipe 7, so that the coolant in the device can be protected during the liquid filling and daily storage processes. It has a protective effect, thereby effectively preventing the impact of light on the performance of the coolant, ensuring that the coolant can perform normally after filling; and during the coolant filling process, the inside of the outlet pipe 7 will become hardened when filled with coolant. The hardened liquid outlet pipe 7 helps to enhance the strength of the stretched telescopic ladder 3 and ensures the safety of the operation. In this embodiment, the hose reel is an automatic telescopic water drum 6. Through the automatic telescopic water drum 6, the liquid outlet pipe 7 is stretched and stretched and automatically retracted after the tensile force disappears; the automatic telescopic water drum 6 is set up in a detachable connection. The specific detachable connection is: an angle steel 14 is welded and fixed on the bottom surface of the liquid injection part 12. The angle steel 14 is located between the diaphragm pump 5, the lithium battery 4 and the automatic telescopic water drum 6. The length of the angle steel 14 is equal to the width of the liquid injection part 12. , and the two ends of the angle steel 14 are sealingly connected to the inner walls of both ends of the liquid injection part 12 through spot welding, and the automatic telescopic water drum 6 can be detached by fixing the base of the automatic telescopic water drum 6 on the angle steel 14 through bolts. The connection facilitates subsequent disassembly and installation of the automatic telescopic water drum 6 and facilitates maintenance and replacement. At the same time, the welded and fixed angle steel 14 forms a dam to separate the area between the lithium battery 4 and the diaphragm pump 5 and the automatic telescopic water drum 6. If the liquid outlet pipe 7 rolled up in the automatic telescopic water drum 6 occurs. When accidental leakage occurs, the angle steel 14 blocks the coolant from flowing and contacting the lithium battery 4, affecting the normal operation of the lithium battery 4. At the same time, as shown in Figure 4, the angle steel 14 pair is connected to the liquid outlet of the diaphragm pump 5. The liquid outlet pipe 7 plays a supporting role, thereby reducing the possibility of shaking when the device moves, causing the connection to loosen.

As shown in Figure 2, the end of the liquid outlet pipe 7 extending out of the top of the telescopic ladder 3 is connected to a liquid injection gun 71. The structure of the liquid injection gun 71 is the same as that of the refueling gun, including a trigger and an automatic stop. The operator can simply Press the trigger by hand to cause the coolant to spray out from the muzzle of the liquid injection gun 71, and the coolant spray flow rate can be controlled by pressing the trigger at different opening and closing angles; the automatic stopper can sense when the expansion tank reaches a certain capacity. When the internal pressure of the expansion tank changes, the liquid injection gun 71 is automatically controlled to stop spraying liquid to prevent the coolant from overflowing due to improper operation, causing pollution, waste or causing hidden dangers to operator safety. At the same time, the liquid injection gun 71 can also play a limiting role. After the filling operation is completed and the telescopic ladder 3 is recovered and placed on the liquid storage part 11, the liquid outlet pipe 7 is moved by the automatic telescopic water drum 6. Rewinding, until the liquid injection gun 71 is against the end of the telescopic tube 33, the rewinding is no longer in progress. At this time, the liquid outlet pipe 7 in the recovered telescopic ladder 3 cooperates with the liquid injection gun 71 to limit the telescopic tube 33. As a result, the telescopic tube 33 accidentally extends during the placement and movement, causing its own observation or injury to passers-by; and at this time, the liquid outlet pipe 7 is filled with coolant inside and the automatic telescopic water drum 6 is retracted, causing damage to the coolant. The squeezing force makes the liquid outlet pipe 7 become harder, thereby further improving the limiting and fixing effect of the liquid outlet pipe 7 on the telescopic pipe 33 to prevent the telescopic pipe 33 from moving.

As shown in Figure 2, two buffer pads 112 are fixed on the top of the side of the liquid storage part 11 close to the telescopic ladder 3. When the telescopic ladder 3 is folded and stored, the two fixed tubes 32 below the telescopic ladder 3 are exactly against each other. on the two buffer pads 112 to prevent scratch damage and harsh noise caused by direct collision between metal and metal. At the same time, since the height of the liquid storage part 11 is greater than the height of the liquid filling part 12, when the telescopic ladder 3 is folded and leaned on the buffer pad 112 on the top of the liquid storage part 11, a gap is formed between the telescopic ladder 3 and the vehicle body 1. triangular shape, thereby preventing the telescopic ladder 3 from being flatly placed on the vehicle body 1, causing the liquid outlet pipe 7 to be bent at 90° and be damaged. Moreover, the first cover 111 is rotatably connected to the top of the liquid storage part 11 through a hinge connection, and the first cover 111 is provided with a flip connection, so that during daily use, the first cover 111 can be opened to access the liquid storage part 11 The liquid storage tank 2 is used for replenishing coolant. Since all new energy electric buses require coolant replenishment, the first cover 111 needs to be opened more times, so the flip-up cover is provided for daily use. Finally, the entire device is equipped with a waterproof paint layer to prevent the device from rusting and affecting normal use.

The specific implementation process is as follows: When a new energy electric bus needs to replenish coolant, push the device to the side of the bus to be replenished, adjust the position of the vehicle body 1 so that the liquid storage part 11 is close to the bus and the vehicle body 1 is in contact with the bus. The car bodies are perpendicular to each other, and then the anti-slip device is used to prevent the rollers from sliding, and the coolant filling operation can be started.

First, unfold the telescopic ladder 3 and stretch the telescopic tube 33 in sequence until the top of the telescopic ladder 3 abuts the top of the bus to ensure that the operator can climb to the top of the bus through the telescopic ladder 3 . During the expansion and elongation process of the telescopic ladder 3, due to the limiting effect of the liquid injection gun 71, an outward stretching force is formed on the liquid outlet pipe 7, and the automatic telescopic water drum 6 rotates due to the force, so that the liquid outlet pipe 7 follows. The telescopic ladder 3 is stretched simultaneously and at the same speed. Next, the operator presses the power button 15 and the pump switch 16, climbs onto the bus roof via the telescopic ladder 3, opens the top cover of the expansion water tank in the roof power battery cooling system, holds the liquid injection gun 71 with one hand and Pull the liquid outlet pipe 7 out of the telescopic ladder 3 again until the liquid injection gun 71 is aligned with the inside of the expansion tank, and press the trigger on the liquid injection gun 71 to start filling the coolant. After the coolant filling is completed, release the trigger and the coolant stops spraying, cover the top cover of the expansion tank, and relax the tension on the injection gun 71 so that the injection gun 71 is in the automatic telescopic water drum 6 The liquid outlet pipe 7 is automatically rolled up under the action of the liquid injection gun 71 and the liquid injection gun 71 returns to the top of the telescopic pipe 33 at the top of the telescopic ladder 3 again.

Then, the operator returns to the ground from the roof of the vehicle through the telescopic ladder 3, turns off the pump switch 16 and the power supply, and controls the telescopic tube 33 on the telescopic ladder 3 to retract in sequence. During the process of the telescopic ladder 3 being retracted in turn, the liquid outlet pipe 7 can still be automatically retracted and arranged under the rewinding effect of the automatic telescopic water drum 6. After the telescopic ladder 3 is completely retracted, it can be seen in Figure 1 It shows that the telescopic ladder 3 is tilted and placed on the buffer pad 112 on the top of the liquid storage part 11.

When the operator goes up and down the telescopic ladder 3, the liquid storage tank 2, the automatic telescopic water drum 6, the diaphragm pump 5 and the lithium battery 4 in the vehicle body 1 can all play a counterweight role and work together to further prevent the vehicle body from 1 movement occurs, thereby affecting the safety of the operator. Compared with the existing replenishment method that requires climbing to the roof from the skylight in the car and manually carrying the refrigerant to the roof, this solution has the following five advantages: First, the operation is safer and avoids the existing The process of carrying refrigerant is prone to leakage of refrigerant, causing the floor and roof of the car to become slippery, causing safety accidents and causing work safety risks; secondly, it has wide applicability and can be adapted to various types of overhead electric battery vehicles The buses include Yutong, Kinglong, Foton, Xinhengtong and other high-level coolant filling; thirdly, it is energy-saving and environmentally friendly. There is no need to climb to the roof through the sunroof in the car to fill the coolant, and avoid stepping on and soiling the seats in the car. , and at the same time, the liquid is automatically pumped through the diaphragm pump 5 and accurately filled through the liquid injection gun 71 to avoid spillage and waste of coolant; fourthly, it is more labor-saving and does not require manual handling of the refrigerant, which reduces the labor intensity of the operator and also reduces the labor intensity of the operator. It can further effectively reduce safety risks; fifthly, it can improve the refilling efficiency. The maintenance time of a single vehicle is shorter than the traditional replenishment and refilling method, and the replenishment operation can be completed in a better timely manner.

Example 2

As shown in Figure 5, a new energy bus coolant filling device is different from Embodiment 1 in that the rotating holes 123 are equipped with dust covers 9, and the dust covers 9 are corrugated rubber dust covers 9. And the top of the corrugated rubber dust cover 9 is adhesively sealed and fixed on the bottom of the fixed tube 32 , and the bottom of the corrugated rubber dust cover 9 is adhesively sealed and fixed around the outer edge of the rotation hole 123 .

In order to provide a rotation space for the expansion and contraction of the telescopic ladder 3 and a passage space for the liquid outlet pipe 7 to enter the interior of the telescopic ladder 3 from the liquid injection part 12, a rotation hole 123 is provided on the second cover plate 122. There is a gap between 123 and the telescopic ladder 3, which leads to problems such as rainwater and stagnant water on rainy days, and external debris and dust entering the interior of the car body 1 through the gap, causing damage to internal equipment. Therefore, this embodiment adds a corrugated rubber dust cover 9 to seal the rotation hole 123 without interfering with the normal rotation of the telescopic ladder 3 to prevent external matter from entering the interior of the vehicle body 1 through the rotation hole 123 to avoid Causes damage to the internal equipment of the vehicle body 1, thereby reducing maintenance costs and extending the service life of the device.

Example 3

A new energy bus coolant filling device is different from Embodiment 1 in that a suction filter valve is provided between the liquid inlet pipe 8 and the liquid storage tank 2 .

The coolant used to replenish the power battery may have flocculent sediments during storage. Although the flocculent sediments do not affect the use effect of the coolant, the flocculent sediments will block the diaphragm pump 5 and the liquid injection gun 71. Therefore, a suction filter valve is added between the liquid inlet pipe 8 and the liquid storage tank 2. The suction filter valve prevents flocculent sediment from entering the diaphragm pump 5 and the liquid injection gun 71 through the liquid inlet pipe 8 and the liquid outlet pipe 7. , can avoid clogging and further ensure the normal use of the device. In this embodiment, the structure of the suction filter valve is the same as that of the existing self-priming head for water purifiers, and will not be described again here.

Example 4

As shown in Figure 6, a new energy bus coolant filling device is different from Embodiment 1 in that the cushion pad 112 is L-shaped, and in this embodiment, only one cushion pad 112 is provided, and the cushion pad 112 The length is the same as the width of the first cover 111.

It is described in Embodiment 1 that in order to facilitate the daily operation of replenishing coolant to the liquid storage tank 2 in the liquid storage part 11, the first cover 111 and the liquid storage part 11 are flip-connected through a hinge connector; therefore, The sealing performance between the first cover plate 111 and the top of the liquid storage part 11 is not high enough. If the sealing degree of the sealing cover 21 of the liquid storage tank 2 is insufficient due to operator error, the first cover plate 111 will not be able to store the liquid. If the sealing degree of the part 11 is not enough, air will increase into the inside of the liquid storage tank 2, increasing the possibility of the coolant being oxidized and affecting the use effect of the coolant.

Based on this, the cushion pad 112 is set to be L-shaped, including a long limb 113 and a short limb 114. The long limb 113 is bonded and fixed with the side wall of the liquid storage part 11, and the short limb 114 is attached to the top of the liquid storage part 11. superior. When the device is in use, the telescopic ladder 3 rests on the buffer pad 112, and under the gravity of the metal telescopic ladder 3 (as shown by the arrow in Figure 6, the force direction of the buffer pad 112), the buffer pad 112 is By squeezing, the two surfaces of the short limb 114 of the cushion pad 112 can be pressed and fitted to the end of the first cover 111 and the top of the liquid storage portion 11 respectively, so that the first cover 111 and the top of the liquid storage tank 2 can be pressed together. The contact surface between them is sealed to improve the sealing effect of the first cover plate 111 on the liquid storage portion 11 and reduce the possibility of oxidation and deterioration of the coolant caused by air.

The above are only embodiments of the present invention, and common knowledge such as specific technical solutions and/or characteristics that are known in the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention. These should also be regarded as the protection scope of the present invention and will not affect the implementation of the present invention. The effect and practicality of the patent. The scope of protection claimed in this application shall be based on the content of the claims, and the specific implementation modes and other records in the description may be used to interpret the content of the claims.

Claims (9)

1. A new energy bus coolant filling device, which is characterized in that: it includes a vehicle body, a liquid storage tank and a filling mechanism. The filling mechanism includes a telescopic ladder and a liquid outlet pipe. The liquid storage tank is connected to the vehicle body and telescopic. The ladder is rotatably connected to the vehicle body, one end of the liquid outlet pipe is connected to the liquid storage tank, and the other end of the liquid outlet pipe passes through the telescopic ladder and extends to the outside of the telescopic ladder. 2. A new energy bus coolant filling device according to claim 1, characterized in that: the filling mechanism also includes a liquid filling gun and a hose reel, the liquid outlet pipe is wound around the hose reel, and the filling device is The liquid gun is connected to one end of the liquid outlet pipe extending outside the telescopic ladder. 3. A new energy bus coolant filling device according to claim 2, characterized in that: the filling mechanism also includes a liquid pump and a power part, the power part is connected to the liquid pump, and the liquid outlet pipe is connected to the pump. The liquid outlet end of the liquid pump is connected, and a liquid inlet pipe is provided for communication between the liquid inlet end of the liquid pump and the liquid storage tank. 4. A new energy bus coolant filling device according to claim 3, characterized in that: the vehicle body includes a liquid storage part and a liquid injection part, and a baffle is provided between the liquid storage part and the liquid injection part. And the height of the liquid storage part is greater than the height of the liquid injection part, the liquid storage tank is located in the liquid storage part, and the top flip of the liquid storage tank is connected to the first cover; the hose reel, the liquid pump and the power part are all located in the liquid injection part. In the liquid part, a second cover plate and a connecting plate are provided on the top of the liquid injection part. The telescopic ladder is rotatably connected between the second cover plate and the connecting plate, and the second cover plate is provided with a rotation hole. 5. A new energy bus coolant filling device according to claim 4, characterized in that: the liquid filling part is internally sealed with an angle steel, and the angle steel is located between the hose reel, the power part and the liquid pump. 6. A new energy bus coolant filling device according to claim 5, characterized in that a buffer pad is provided on the top of the liquid storage part close to the side of the telescopic ladder. 7. A new energy bus coolant filling device according to claim 6, characterized in that: the filling mechanism also includes a dust cover, the bottom of the dust cover is connected to the connecting hole, and the top of the dust cover Connect to the bottom of the telescopic ladder. 8. A new energy bus coolant filling device according to claim 6, characterized in that: a suction filter valve is provided between the liquid inlet pipe and the liquid storage tank. 9. A new energy bus coolant filling device according to claim 6, characterized in that: the buffer pad is L-shaped, and the length of the buffer pad is the same as the length of the first cover.