A heat dissipation and heating power supply vehicle
By designing air ducts and blowers in the power supply car, the heat from the battery pack is transferred to the car during charging, which solves the problem that electric heating consumes power to affect the battery pack's battery life, and achieves efficient heating and battery pack heat dissipation.
Patent Information
- Application Number
- CN202211184696.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-27
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2042-09-27
AI Technical Summary
When existing power vehicles charge new energy vehicles in winter, the electric heating plate consumes the battery pack's power, seriously affecting the battery life of the battery pack.
Design a heat dissipation and heating power vehicle to use the heat of the battery pack when charging to heat it. By setting up an air duct and blower, the heat of the battery pack is transferred to the carriage to achieve heating without affecting the battery pack's battery life.
Effectively utilizing the heat of the battery pack for heating, reducing the demand for electric heating, improving the battery life of the battery pack, and achieving good heat dissipation of the battery pack.
Smart Images

Figure CN115635901B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power supply vehicles, and in particular to a heat dissipation and heating type power supply vehicle. Background Art
[0002] When a new energy vehicle cannot run due to lack of power, a power supply vehicle needs to be called for emergency power supply. The existing power supply vehicle has a relatively large battery pack inside. The battery pack is electrically connected to the new energy vehicle through a charging cable to achieve charging of the new energy vehicle. In winter, the compartment of the power supply vehicle often uses electric heating sheets to increase the temperature inside the compartment. Especially when the power supply vehicle is charging the new energy vehicle, this process often lasts for dozens of minutes. Therefore, people often need to enter the compartment to keep warm. The electric heating sheets consume the power of the battery pack, thus seriously affecting the endurance of the battery pack. Summary of the Invention
[0003] In order to solve the problem that the battery pack of the existing power supply vehicle uses the power of the battery pack for heating when charging the new energy vehicle in winter, thus seriously affecting the endurance of the battery pack, the present invention provides a heat dissipation and heating type power supply vehicle, which uses the heat of the battery pack during charging for heating, and has little impact on the endurance of the battery pack.
[0004] To achieve the above object, the present invention adopts the following technical solutions:
[0005] A heat dissipation and heating type power supply vehicle includes a compartment, a container, and a plurality of battery packs arranged in the container. A tailgate is detachably connected to the rear side of the container. A bracket is arranged in the container. The bracket includes two windshields and two limiting beams. The windshields and the limiting beams correspond one by one. One end of the windshield is fixedly connected to the front side of the container, and the other end of the windshield abuts against the tailgate. The limiting beam includes two parallel wing plates, and the wing plates are fixedly connected by a connecting plate. The wing plates abut against the upper and lower sides of the windshield. A wind channel is formed between the windshield and the connecting plate. A chute is formed between the side of the connecting plate away from the wind channel and the wing plate. The battery packs are arranged between the limiting beams, and the edges of the battery packs are slidably connected in the chute. The battery packs are arranged in sequence along the extension direction of the limiting beam and are in contact with each other. The tailgate is provided with an air inlet pipe communicated with the wind channel, the front side of the container is provided with an air outlet pipe communicated with the wind channel, and the compartment is provided with a blower for introducing the air in the air outlet pipe into the compartment.
[0006] With the above settings, the heat of the battery pack during charging is utilized for heating without affecting the battery pack's endurance. Specifically, the carriage is provided with a power system, and the carriage is connected to the container to drive the container forward or backward. When the battery pack is charging the new energy vehicle, the temperature of the battery pack rises. The battery pack causes the temperature of the limit beam to rise, and the limit beam causes the temperature of the air in the air duct to rise. The blower operates, and the air enters the carriage after passing through the intake pipe, air duct, and outlet pipe. The air absorbs the heat of the limit beam in the air duct and its temperature rises, thereby increasing the temperature inside the carriage. This application utilizes the heat during battery pack charging for heating. On the one hand, it helps dissipate the heat of the battery pack. On the other hand, it does not affect the battery pack's endurance, that is, it does not affect the battery pack's charging ability for the new energy vehicle.
[0007] In this application, the terminal posts of the battery pack are located on the upper side of the battery pack and between the limit beams, thus facilitating the connection of wires. When the battery pack needs to be replaced, first disconnect the wires on the terminal posts, and then remove the tailgate. At this time, the rear end of the chute is exposed to the air. At this time, the battery pack can slide backward along the chute to the rear side of the power vehicle in sequence. When the battery pack disengages from the chute, the battery pack is removed, which is very convenient. Slide the new battery pack into the chute in sequence, and the battery packs abut against each other to increase stability. Finally, close the tailgate, and then connect the wires to the terminal posts. Thus, the replacement of the battery pack is completed, which is very convenient.
[0008] Furthermore, the bracket further includes a first rotating plate rotatably connected to the front side of the container. The first rotating plate is arranged between the windshields. One end of the limit beam is fixedly connected to the first rotating plate. The first rotating plate is provided with a first ventilation hole, and the outlet pipe communicates with the air duct through the first ventilation hole. The tailgate is rotatably connected with a second rotating plate, and the limit beam is detachably connected to the second rotating plate. The second rotating plate is provided with a second ventilation hole, and the intake pipe communicates with the air duct through the second ventilation hole. The container is provided with a driving device for driving the first rotating plate to rotate, and a front door is arranged on the front side of the container.
[0009] With the above settings, good heat dissipation of the battery pack can be achieved. Specifically, on a hot day when the carriage does not require heating, the blower does not operate. The driving device drives the first rotating plate to rotate, and the first rotating plate drives the limit beam, the second rotating plate, and the battery pack to rotate. When the limit beam disengages from the windshield, the first ventilation hole is staggered from the outlet pipe, and the second ventilation hole is staggered from the intake pipe, so that the intake pipe communicates with the container, and the outlet pipe communicates with the container. After the battery pack generates heat, the heat of the battery pack will not accumulate in the air duct, thereby preventing local high temperatures from occurring on both sides of the battery pack. The heat of the battery pack will be evenly dissipated into the container.
[0010] Further, the brackets are arranged from top to bottom. The driving device includes a driving rod and a first driving motor disposed on the front side of the container. The driving rod is connected to the first driving motor. One end of the driving rod and one end of the uppermost bracket are connected by a first transmission rod to drive the uppermost bracket to rotate. Two adjacent first rotating plates up and down are connected by a second transmission rod to enable synchronous transmission of the first rotating plates.
[0011] Through the above settings, synchronous rotation of multiple brackets can be achieved. Specifically, the upper end of the first transmission rod is rotatably connected to the driving rod, the lower end of the first transmission rod is rotatably connected to the first rotating plate. The first driving motor drives the driving rod to rotate, and the driving rod drives the uppermost first rotating plate to rotate through the first transmission rod. The upper end of the second transmission rod is rotatably connected to the adjacent upper first rotating plate, and the lower end of the second transmission rod is rotatably connected to the adjacent lower first rotating plate, thereby realizing the linkage of adjacent first rotating plates up and down. While improving the rotation efficiency of the brackets, mutual interference between the brackets can also be prevented.
[0012] Further, a first rotating shaft is fixedly connected to the middle of the first rotating plate. The first rotating shaft is rotatably connected to the front side of the container. The wind shield is in an arc shape, and the center of the wind shield is located on the axis of the first rotating shaft. The first rotating plate is fixedly connected with a second rotating shaft. The upper end of the second transmission rod is rotatably connected to the corresponding first rotating plate through the second rotating shaft, and the lower end of the second transmission rod is rotatably connected to the corresponding first rotating plate through the second rotating shaft.
[0013] Through the above settings, stable rotation of the first rotating plate and the connection between the second transmission rod and the first rotating plate are realized.
[0014] Further, fins are fixedly connected to the side of the connecting plate away from the battery pack.
[0015] Through the above settings, the heat dissipation of the limiting beam is improved, so that the heat of the battery pack can better heat the air in the air duct.
[0016] Further, a wind collecting cover with an opening facing forward is provided on the upper side of the carriage. A valve plate and a second driving motor for driving the valve plate to rotate are provided inside the wind collecting cover. The wind collecting cover is communicated with the air outlet pipe.
[0017] Through the above settings, the heat dissipation of the battery pack can be improved. Specifically, after the battery pack is used, the temperature of the battery pack is relatively high. At this time, the valve plate can be opened by the second driving motor. When the power vehicle moves forward, the wind passes through the wind collecting cover, the air outlet pipe, the air duct and leaves from the air inlet pipe. When the wind passes through the air duct, it absorbs the heat of the limiting beam, thereby reducing the temperature of the limiting beam and further reducing the temperature of the battery pack. When the valve plate is closed, rainwater can be prevented from entering the air outlet pipe.
[0018] Further, the carriage is connected with a main pipe, the main pipe is close to the lower side of the carriage, the blower is arranged on the main pipe, the air collecting hood is communicated with the main pipe through an air guiding pipe, the main pipe is arranged below the air outlet pipe, and the air outlet pipe is communicated with the carriage through the main pipe.
[0019] Through the above settings, the air output from the air duct during heating enters the carriage through the air outlet pipe and the main pipe. When the battery pack needs to dissipate heat, the air collecting hood sends air to the air duct through the air guiding pipe and the main pipe.
[0020] Further, the main pipe is provided with an electric heating sheet electrically connected to the battery pack.
[0021] Through the above settings, the temperature of the air output from the main pipe can be further increased. Specifically, when the temperature of the air heated by the battery pack is not enough, the temperature of the air can be further increased through the electric heating sheet. It should be particularly noted that the temperature of the air passing through the air duct is higher than the temperature of the outdoor air, so the heating amplitude required by the electric heating sheet is reduced, that is, the power of the electric heating sheet can be greatly reduced, thus achieving the effect of saving electricity and further reducing the impact on the battery life of the battery pack. Description of the Drawings
[0022] Figure 1 It is a schematic diagram of the embodiment.
[0023] Figure 2 It is an enlarged view of the container part of the embodiment.
[0024] Figure 3 It is Figure 2 B-B cross-sectional view of
[0025] Figure 4 It is Figure 2 C-C cross-sectional view of
[0026] Figure 5 It is Figure 3 Schematic diagram after the bracket rotates of
[0027] Figure 6 It is Figure 4 Schematic diagram after the bracket rotates of
[0028] Figure 7 Schematic diagram after the container is installed with a lateral support. Detailed Embodiment
[0029] Next, through embodiments and in combination with the drawings, the technical solutions of the present invention will be further specifically described.
[0030] Refer to Figures 1 to 7 , a heat dissipation and heating type power supply vehicle, including a carriage 11, a container 12 and a plurality of battery packs 13 arranged in the container 12, as Figure 1The front side and the rear side of the power supply vehicle are defined as shown. A tailgate 121 is detachably connected to the rear side of the container 12. A bracket 14 is arranged in the container 12. The bracket 14 includes two windshields 141 and two limiting beams 142. The windshields 141 and the limiting beams 142 correspond one by one. One end of the windshield 141 is fixedly connected to the front side of the container 12, and the other end of the windshield 141 abuts against the tailgate 121. The limiting beam 142 includes two parallel wing plates 1421. The wing plates 1421 are fixedly connected through a connecting plate 1422. The wing plates 1421 abut against the upper and lower sides of the windshield 141. An air duct 1423 is formed between the windshield 141 and the connecting plate 1422. A chute 1424 is formed between the side of the connecting plate 1422 away from the air duct 1423 and the wing plate 1421. The battery pack 13 is arranged between the limiting beams 142, and the edge of the battery pack 13 is slidably connected in the chute 1424. The battery packs 13 are arranged in sequence along the extending direction of the limiting beams 142 and abut against each other. An air inlet pipe 122 communicating with the air duct 1423 is arranged on the tailgate 121. An air outlet pipe 123 communicating with the air duct 1423 is arranged on the front side of the container 12. The carriage 11 is provided with a blower 111 for introducing the air in the air outlet pipe 123 into the carriage 11.
[0031] With the above arrangement, the heat of the battery pack 13 during charging is utilized for heating without affecting the battery life of the battery pack 13. Specifically, the carriage 11 is provided with a power system. The carriage 11 is connected to the container 12 to drive the container 12 to move forward or backward. When the battery pack 13 charges the new energy vehicle, the temperature of the battery pack 13 rises. The battery pack 13 causes the temperature of the limiting beam 142 to rise. The limiting beam 142 causes the temperature of the air in the air duct 1423 to rise. The blower 111 operates. Refer to Figure 1 , the air enters the carriage 11 after passing through the air inlet pipe 122, the air duct 1423, and the air outlet pipe 123. The air absorbs the heat of the limiting beam 142 in the air duct 1423 and its temperature rises, so that the temperature in the carriage 11 rises. In this application, the heat during the charging of the battery pack 13 is utilized for heating. On the one hand, it can help dissipate the heat of the battery pack 13. On the other hand, it does not affect the battery life of the battery pack 13, that is, it does not affect the charging ability of the battery pack 13 for the new energy vehicle.
[0032] In this application, the terminal posts of the battery pack 13 are located on the upper side of the battery pack 13 and between the limiting beams 142, facilitating the connection of wires. When the battery pack 13 needs to be replaced, first disconnect the wires on the terminal posts, and then remove the tailgate 121. At this time, the rear end of the sliding groove 1424 is exposed to the air. At this time, the battery pack 13 can slide sequentially along the sliding groove 1424 to the rear side of the power vehicle. When the battery pack 13 disengages from the sliding groove 1424, the battery pack 13 is removed, which is very convenient. Slide the new battery pack 13 into the sliding groove 1424 in sequence, and the battery packs 13 abut against each other to increase stability. Close the tailgate 121, and then connect the wires to the terminal posts. Thus, the replacement of the battery pack 13 is completed, which is very convenient.
[0033] As an implementation, the bracket 14 further includes a first rotating plate 143 rotatably connected to the front side of the container 12. The first rotating plate 143 is arranged between the windshields 141. One end of the limiting beam 142 is fixedly connected to the first rotating plate 143. The first rotating plate 143 is provided with a first ventilation hole 1431. The air outlet pipe 123 communicates with the air duct 1423 through the first ventilation hole 1431. The tailgate 121 is rotatably connected with a second rotating plate 144. The limiting beam 142 is detachably connected to the second rotating plate 144. The second rotating plate 144 is provided with a second ventilation hole 1441. The air inlet pipe 122 communicates with the air duct 1423 through the second ventilation hole 1441. The container 12 is provided with a driving device 124 for driving the first rotating plate 143 to rotate, and a front door 125 is arranged on the front side of the container 12.
[0034] Through the above settings, good heat dissipation of the battery pack 13 can be achieved. Specifically, on a hot day, when heating is not required in the carriage 11 and the blower 111 does not operate, the driving device 124 drives the first rotating plate 143 to rotate. The first rotating plate 143 drives the limiting beam 142, the second rotating plate 144 and the battery pack 13 to rotate. When the limiting beam 142 disengages from the windshield 141, see Figure 5 and Figure 6 , the first ventilation hole 1431 is staggered from the air outlet pipe 123, and the second ventilation hole 1441 is staggered from the air inlet pipe 122, so that the air inlet pipe 122 communicates with the container 12, and the air outlet pipe 123 communicates with the container 12. After the battery pack 13 generates heat, the heat of the battery pack 13 will not accumulate in the air duct 1423, thereby preventing local high temperature from occurring on both sides of the battery pack 13, and the heat of the battery pack 13 will be evenly dissipated into the container 12.
[0035] The front door 125 facilitates personnel to enter the container 12 for maintaining and operating the battery pack 13. When the battery pack 13 needs to be replaced, personnel enter the container 12 through the front door 125, disconnect the wires on the terminal posts, and install the horizontal support 21 inside the container 12. The lower side of the end of the horizontal support and the bracket 14 away from the carriage 11 abuts, so as to support the bracket 14, disconnect the second rotating plate 144 and the limiting beam 142, and remove the tail door 121, see Figure 7 , then replace the battery pack 13. After replacement, install the tail door 121 back to the container 12, reconnect the second rotating plate 144 and the limiting beam 142, and then remove the horizontal support.
[0036] As an implementation manner, the brackets 14 are arranged from top to bottom in sequence. The driving device 124 includes a driving rod 1241 and a first driving motor 1242 arranged on the front side of the container 12. The driving rod 1241 is connected to the first driving motor 1242. One end of the driving rod 1241 and one end of the uppermost bracket 14 are connected by a first transmission rod 1243 to drive the uppermost bracket 14 to rotate. The two adjacent upper and lower first rotating plates 143 are connected by a second transmission rod 1244 to enable the synchronous transmission of the first rotating plates 143.
[0037] Through the above settings, the synchronous rotation of multiple brackets 14 can be realized. Specifically, the upper end of the first transmission rod 1243 is rotatably connected to the driving rod 1241, the lower end of the first transmission rod 1243 is rotatably connected to the first rotating plate 143. The first driving motor 1242 drives the driving rod 1241 to rotate, and the driving rod 1241 drives the uppermost first rotating plate 143 to rotate through the first transmission rod 1243. The upper end of the second transmission rod 1244 is rotatably connected to the adjacent upper first rotating plate 143, and the lower end of the second transmission rod 1244 is rotatably connected to the adjacent lower first rotating plate 143, so as to realize the linkage of the adjacent upper and lower first rotating plates 143, improve the rotation efficiency of the brackets 14, and prevent the mutual interference between the brackets 14 at the same time.
[0038] As an implementation manner, a first rotating shaft 1432 is fixedly connected to the middle of the first rotating plate 143. The first rotating shaft 1432 is rotatably connected to the front side of the container 12. The windshield 141 is in an arc shape, and the center of the windshield 141 is located on the axis of the first rotating shaft 1432. The first rotating plate 143 is fixedly connected with a second rotating shaft 1433. The upper end of the second transmission rod 1244 is rotatably connected to the corresponding first rotating plate 143 through the second rotating shaft 1433, and the lower end of the second transmission rod 1244 is rotatably connected to the corresponding first rotating plate 143 through the second rotating shaft 1433.
[0039] Through the above settings, the stable rotation of the first rotating plate 143 and the connection between the second transmission rod 1244 and the first rotating plate 143 are realized.
[0040] As an implementation method, fins 1425 are fixedly connected to the side of the connecting plate 1422 away from the battery pack 13.
[0041] Through the above settings, the heat dissipation of the limiting beam 142 is improved, so that the heat of the battery pack 13 can better heat the air in the air duct 1423.
[0042] As an implementation method, an air collecting cover 112 with an opening facing forward is arranged on the upper side of the carriage 11. A valve plate 113 and a second driving motor (not shown in the figure) for driving the rotation of the valve plate 113 are arranged inside the air collecting cover 112, and the air collecting cover 112 is communicated with the air outlet pipe 123.
[0043] Through the above settings, the heat dissipation of the battery pack 13 can be improved. Specifically, after the battery pack 13 is used, the temperature of the battery pack 13 is relatively high. At this time, the valve plate 113 can be opened through the second driving motor. When the power vehicle moves forward, the wind passes through the air collecting cover 112, the air outlet pipe 123, and the air duct 1423 and leaves from the air inlet pipe 122. When the wind passes through the air duct 1423, it absorbs the heat of the limiting beam 142, thereby reducing the temperature of the limiting beam 142 and further reducing the temperature of the battery pack 13. When the valve plate 113 is closed, rainwater can be prevented from entering the air outlet pipe 123.
[0044] As an implementation method, the carriage 11 is connected with a main pipe 114. The main pipe 114 is close to the lower side of the carriage 11. The blower 111 is arranged on the main pipe 114. The air collecting cover 112 is communicated with the main pipe 114 through an air guiding pipe 115. The main pipe 114 is arranged below the air outlet pipe 123, and the air outlet pipe 123 is communicated with the carriage 11 through the main pipe 114.
[0045] Through the above settings, the air output from the air duct 1423 during heating enters the carriage 11 through the air outlet pipe 123 and the main pipe 114. When the battery pack 13 needs to dissipate heat, the air collecting cover 112 sends air to the air duct 1423 through the air guiding pipe 115 and the main pipe 114.
[0046] As an implementation method, the main pipe 114 is provided with an electric heating sheet 1141 electrically connected to the battery pack 13.
[0047] Through the above settings, the temperature of the air output by the main pipe 114 can be further increased. Specifically, when the temperature of the air heated by the battery pack 13 is not sufficient, the temperature of the air can be further increased by the electric heating sheet 1141. It should be noted that the temperature of the air passing through the air duct 1423 is higher than the temperature of the outdoor air. Therefore, the heating amplitude required by the electric heating sheet 1141 is reduced, that is, the power of the electric heating sheet 1141 can be greatly reduced, so as to achieve the effect of power saving and further reduce the impact on the battery life of the battery pack 13.
[0048] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.
Claims
1. A heat dissipation and heating type power supply vehicle, comprising a carriage, a container and a plurality of battery packs arranged in the container, characterized in that, A rear door is detachably connected to the rear side of the container. A bracket is arranged inside the container. The bracket includes two windshields and two limiting beams. The windshields and the limiting beams correspond one by one. One end of the windshield is fixedly connected to the front side of the container, and the other end of the windshield abuts against the rear door. The limiting beam includes two parallel wing plates, and the wing plates are fixedly connected by a connecting plate. The wing plates abut against the upper and lower sides of the windshield. An air duct is formed between the windshield and the connecting plate. A chute is formed between the side of the connecting plate away from the air duct and the wing plate. The battery pack is arranged between the limiting beams, and the edge of the battery pack is slidably connected in the chute. The battery packs are arranged in sequence along the extending direction of the limiting beams and abut against each other. The rear door is provided with an air inlet pipe communicated with the air duct, the front side of the container is provided with an air outlet pipe communicated with the air duct, and the carriage is provided with a blower for introducing the air in the air outlet pipe into the carriage.
2. The heat dissipation and heating type power supply vehicle according to claim 1, wherein, The bracket further includes a first rotating plate rotatably connected to the front side of the container. The first rotating plate is arranged between the windshields. One end of the limiting beam is fixedly connected to the first rotating plate. The first rotating plate is provided with a first ventilation hole. The air outlet pipe is communicated with the air duct through the first ventilation hole. A second rotating plate is rotatably connected to the rear door. The limiting beam is detachably connected to the second rotating plate. The second rotating plate is provided with a second ventilation hole. The air inlet pipe is communicated with the air duct through the second ventilation hole. The container is provided with a driving device for driving the first rotating plate to rotate, and a front door is arranged on the front side of the container.
3. The heat dissipation and heating type power vehicle according to claim 2, characterized in that, The brackets are arranged in sequence from top to bottom. The driving device includes a driving rod and a first driving motor arranged on the front side of the container. The driving rod is connected to the first driving motor. One end of the driving rod is connected to one end of the uppermost bracket through a first transmission rod to drive the uppermost bracket to rotate, and the two adjacent first rotating plates from top to bottom are connected through a second transmission rod to enable the first rotating plates to be synchronously driven.
4. The heat dissipation and heating type power vehicle according to claim 3, characterized in that, A first rotating shaft is fixedly connected to the middle of the first rotating plate. The first rotating shaft is rotatably connected to the front side of the container. The windshield is in an arc shape, and the center of the windshield is located on the axis of the first rotating shaft. The first rotating plate is fixedly connected to a second rotating shaft. The upper end of the second transmission rod is rotatably connected to the corresponding first rotating plate through the second rotating shaft, and the lower end of the second transmission rod is rotatably connected to the corresponding first rotating plate through the second rotating shaft.
5. A heat dissipation and heating type power supply vehicle according to any one of claims 1 to 4, characterized in that, Fins are fixedly connected to the side of the connecting plate away from the battery pack.
6. A heat dissipation and heating type power supply vehicle according to any one of claims 1 to 4, characterized in that, An air collecting cover with an opening facing forward is arranged on the upper side of the carriage. A valve plate and a second driving motor for driving the valve plate to rotate are arranged inside the air collecting cover. The air collecting cover is communicated with the air outlet pipe.
7. The heat dissipation and heating type power supply vehicle according to claim 6, characterized in that, The carriage is connected with a main pipe. The main pipe is close to the lower side of the carriage. The blower is arranged on the main pipe. The air collecting hood is communicated with the main pipe through an air guiding pipe. The main pipe is arranged below the air outlet pipe. The air outlet pipe is communicated with the carriage through the main pipe.
8. The heat dissipation and heating type power supply vehicle according to claim 7, characterized in that, The main pipe is provided with an electric heating sheet electrically connected to the battery pack.
Citation Information
Patent Citations
Pure electric vehicles heating system
CN208053032U
Flywheel UPS energy storage power supply vehicle heat dissipation device and power supply vehicle
CN212073846U