Heat dissipation device for lithium battery pack of new energy engineering vehicle

Abstract

The invention belongs to the technical field of new energy vehicles, and particularly relates to a heat dissipation device for a lithium battery pack of a new energy engineering vehicle, and the top of a lithium battery pack frame is in bolted connection with a cover plate; the side wall of the lithium battery pack frame is fixedly connected with an air inlet pipe; an air supply groove is formed in the top of the lithium battery pack frame, and the air supply groove is communicated with the air inlet pipe; a plurality of groups of exhaust grooves are formed in one side, far away from the air inlet pipe, of the top of the lithium battery pack frame; a heat dissipation copper pipe is fixedly connected into the cover plate; a plurality of groups of heat conduction copper plates are fixedly connected to the side wall of the heat dissipation copper pipe and are in contact with the side wall of the lithium battery pack in the lithium battery pack frame; by installing the air inlet pipe on the side wall of the lithium battery pack frame, airflow can be driven to smoothly enter the position between the lithium battery pack frame and the cover plate, heat dissipation treatment is conducted on the heat dissipation copper pipe, the heat conduction copper plate and the lithium battery pack, meanwhile, the heat dissipation copper pipe can conduct heat exchange of water flow through an external water pump and a water tank, and heat dissipation treatment is further improved.

Description

Technical Field

[0001] This invention belongs to the field of new energy vehicle technology, specifically a heat dissipation device for lithium battery packs in new energy engineering vehicles. Background Technology

[0002] Lithium-ion battery packs are the core power source for new energy vehicles. They consist of multiple lithium-ion battery cells connected in series, parallel, or series-parallel, and mainly provide driving power for vehicles. Currently, the mainstream types on the market are ternary lithium batteries and lithium iron phosphate batteries.

[0003] A patent application with publication number CN220984631U discloses a heat dissipation device for lithium battery packs in new energy engineering vehicles, including a housing. Two fixing blocks are fixedly connected to one side wall of the housing, and a drive fan is fixedly connected to one end face of each of the two fixing blocks. A motor is fixedly connected to the bottom of one side of the housing, and a drive wheel is connected to the output end of the motor. The drive wheel is connected to a driven wheel via a belt drive. Both the drive wheel and the driven wheel are connected to threaded screws. Slider blocks are slidably sleeved on the outer walls of the two threaded screws, and a baffle is fixedly connected between the two sliders.

[0004] In the current environment, during the testing of lithium battery packs, testing operations need to be carried out on engineering vehicles to evaluate various data of the lithium battery packs. At this time, during long-term testing operations, the temperature of the lithium battery packs rises during continuous charging and discharging, which leads to abnormal data.

[0005] Therefore, the present invention provides a heat dissipation device for lithium battery packs in new energy engineering vehicles. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: A heat dissipation device for lithium battery packs of new energy engineering vehicles, comprising a lithium battery pack frame; a cover plate is bolted to the top of the lithium battery pack frame; an air inlet pipe is fixed to the side wall of the lithium battery pack frame; an air supply slot is opened on the top of the lithium battery pack frame, and the air supply slot is connected to the air inlet pipe; multiple sets of exhaust slots are opened on the side of the top of the lithium battery pack frame away from the air inlet pipe; a heat dissipation copper pipe is fixed inside the cover plate; multiple sets of heat-conducting copper plates are fixed to the side wall of the heat dissipation copper pipe, and the heat-conducting copper plates are in contact with the side wall of the lithium battery pack inside the lithium battery pack frame.

[0008] Preferably, a baffle plate is rotatably connected to the end of the air inlet pipe; a first sliding groove is opened in the middle of the air supply channel inside the lithium battery pack frame; the first sliding groove extends through the side wall of the lithium battery pack frame and a filter screen is fixedly connected to its end; a second sliding groove is opened below the first sliding groove on one side of the filter screen.

[0009] Preferably, the end of the first chute away from the filter screen is rotatably connected to a first separation plate, the top sidewall of the second chute is hinged to a second separation plate by a torsion spring, and the top sidewall of the second chute has a third chute; one end of a traction rope is fixed to the bottom of the wind baffle, and the other end of the traction rope passes through the air inlet pipe and the air outlet chute and is connected to the sidewall of the second separation plate and the sidewall of the first separation plate respectively.

[0010] Preferably, a pair of positioning tubes are fixedly connected to both sides of the multiple sets of heat-conducting copper plates; a traction rod is fixedly connected between the pair of positioning tubes; a positioning plate is provided in the middle of the traction rod; scrapers are fixedly connected to both sides of the positioning plate; the bottom of the scraper is arc-shaped and the end is in contact with the side wall of the heat-conducting copper plate.

[0011] Preferably, a positioning ring is slidably connected to the middle of the traction rod; the positioning plate is fixedly connected to the side wall of the positioning ring; multiple sets of No. 4 sliding grooves are opened in the middle of the traction rod; multiple sets of protrusions are fixedly connected to the middle of the No. 4 sliding groove; a roller is fixedly connected to the middle of the positioning ring through a spring rod; the roller rolls inside the No. 4 sliding groove.

[0012] Preferably, the bottom of the scraper is covered with a layer of rubber film, a rubber plate is fixedly connected to the side wall of the rubber film and the side in contact with the heat-conducting copper plate, and a cam is installed on the side of the scraper in contact with the heat-conducting copper plate.

[0013] Preferably, the scraper sidewall has a fifth groove; the cam is fixed inside the fifth groove; multiple sets of support rods are fixed to the rubber membrane sidewall, and the support rods pass through the scraper and contact the cam sidewall; the cam sidewall has a sixth groove on one side of the support rod.

[0014] Preferably, the inner wall of the multiple sets of heat dissipation copper pipes is provided with a No. 7 sliding groove; the No. 7 sliding groove is filled with an air bladder, and the air bladder is in contact with the side wall of the heat-conducting copper plate; the inner wall of the heat dissipation copper pipe is rotatably connected to multiple sets of guide plates, and the multiple sets of guide plates are distributed in a circumferential array along the inner wall of the heat dissipation copper pipe.

[0015] Preferably, sealing plates are slidably connected between the sidewalls of the multiple sets of guide plates; the sidewalls of the heat-conducting copper plate are provided with multiple sets of No. 8 sliding grooves inside the heat dissipation copper pipe.

[0016] Preferably, the air inlet pipe and the lithium battery pack frame are rotatably connected to multiple sets of rotating shafts located at the bend of the traction rope.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The heat dissipation device for lithium battery packs of new energy engineering vehicles described in this invention, through the installation of air inlet pipes on the side wall of the lithium battery pack frame, can drive airflow smoothly into the space between the lithium battery pack frame and the cover plate to dissipate heat from the heat dissipation copper pipes, heat-conducting copper plates and the lithium battery pack. At the same time, the heat dissipation copper pipes can exchange heat with water flow through an external water pump and water tank, further increasing the heat dissipation effect.

[0019] 2. The heat dissipation device for lithium battery packs of new energy engineering vehicles described in this invention, through the opening of a first slide and a second slide, allows some heavier impurities to enter the first slide during the airflow process. After being filtered by the filter screen, they are discharged through the second slide, reducing the likelihood of impurities following the airflow into the lithium battery pack frame and causing collisions with the lithium battery pack, thus affecting the normal operation of the equipment. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the lithium battery pack frame in this invention;

[0023] Figure 3 This is a schematic diagram of the lithium battery pack frame in this invention;

[0024] Figure 4 This is a cross-sectional schematic diagram of the lithium battery pack frame in this invention;

[0025] Figure 5 This is a schematic diagram of the structure of the heat-conducting copper plate in this invention;

[0026] Figure 6 This is a schematic diagram of the traction rod in this invention;

[0027] Figure 7 This is a schematic diagram of the scraper structure in this invention;

[0028] Figure 8 This is a schematic diagram of the heat dissipation copper pipe in this invention.

[0029] In the diagram: 1. Lithium battery pack frame; 11. Cover plate; 12. Air inlet pipe; 13. Air supply duct; 14. Air exhaust duct; 15. Heat dissipation copper pipe; 16. Heat-conducting copper plate; 2. Wind baffle plate; 21. Slide 1; 22. Slide 2; 23. Filter screen; 3. Separation plate 1; 31. Separation plate 2; 32. Slide 3; 33. Traction rope; 4. Positioning tube; 41. Traction rod; 42. Positioning plate; 43. Scraper; 5. Slide 4; 51. Positioning ring; 52. Protrusion; 53. Roller; 6. Rubber diaphragm; 61. Rubber plate; 62. Cam; 7. Slide 5; 71. Support rod; 72. Slide 6; 8. Guide plate; 81. Slide 7; 82. Airbag; 9. Sealing plate; 91. Slide 8; 101. Rotating shaft. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] like Figures 1 to 3 As shown in the embodiment of the present invention, a heat dissipation device for a lithium battery pack in a new energy engineering vehicle includes a lithium battery pack frame 1; a cover plate 11 is bolted to the top of the lithium battery pack frame 1; an air inlet pipe 12 is fixedly connected to the side wall of the lithium battery pack frame 1; an air supply slot 13 is opened on the top of the lithium battery pack frame 1, and the air supply slot 13 is connected to the air inlet pipe 12; multiple exhaust slots 14 are opened on the side of the top of the lithium battery pack frame 1 away from the air inlet pipe 12; a heat dissipation copper pipe 15 is fixedly connected inside the cover plate 11; multiple heat-conducting copper plates 16 are fixedly connected to the side wall of the heat dissipation copper pipe 15, and the heat-conducting copper plates 16 are in contact with the side wall of the lithium battery pack inside the lithium battery pack frame 1; during the operation of the device, the operator can place the lithium battery pack frame 1 on the new energy engineering vehicle. At this time, as the vehicle... When the vehicle starts, airflow can pass through the air inlet pipe 12 and the air outlet 13 into the space between the lithium battery pack frame 1 and the cover plate 11, blowing on the heat dissipation copper pipe 15. Then, the hot air is driven out through the exhaust duct 14, thereby reducing the heat accumulation inside the lithium battery pack frame 1. As the vehicle speed increases, the current release of the lithium battery pack increases, and the heat also increases. At this time, the increased vehicle speed will accelerate the airflow through the inside of the lithium battery pack frame 1. Through the installation of the air inlet pipe 12 on the side wall of the lithium battery pack frame 1, the airflow can be smoothly driven into the space between the lithium battery pack frame 1 and the cover plate 11 to dissipate heat from the heat dissipation copper pipe 15, the heat-conducting copper plate 16 and the lithium battery pack. At the same time, the heat dissipation copper pipe 15 can exchange heat with water through an external water pump and water tank, further increasing the heat dissipation.

[0032] like Figures 3 to 4As shown, the air inlet pipe 12 is rotatably connected to a baffle plate 2 at its end; a first slide groove 21 is opened in the middle of the air delivery duct 13 inside the lithium battery pack frame 1; the first slide groove 21 extends through to the side wall of the lithium battery pack frame 1, and a filter screen 23 is fixedly connected to its end; a second slide groove 22 is opened below the first slide groove 21 on one side of the filter screen 23; during vehicle testing, as the vehicle speed increases, the airflow will push the baffle plate 2 into the air delivery duct 13. At this time, some of the gravel and impurities in the air are carried by the airflow. After entering the air supply duct 13, heavier gravel and impurities will enter through the first chute 21, be blocked by the filter screen 23, and then be discharged outward through the second chute 22. By opening the first chute 21 and the second chute 22, some heavier impurities can enter the first chute 21 during the airflow process, and be discharged through the second chute 22 after being filtered by the filter screen 23. This reduces the possibility of impurities following the airflow into the lithium battery pack frame 1, causing collisions with the lithium battery pack and affecting the normal operation of the equipment.

[0033] like Figures 3 to 4 As shown, the end of the first chute 21 furthest from the filter screen 23 is rotatably connected to the first separation plate 3. The top sidewall of the second chute 22 is hinged to the second separation plate 31 via a torsion spring. The top sidewall of the second chute 22 has a third chute 32. One end of the traction rope 33 is fixedly connected to the bottom of the wind baffle 2, and the other end of the traction rope 33 passes through the air inlet pipe 12 and the air outlet duct 13 and is connected to the sidewall of the second separation plate 31 and the sidewall of the first separation plate 3 respectively. During the movement of the engineering vehicle, as the vehicle speed increases, the wind baffle 2 will generate airflow under the blowing action of the airflow. When the vehicle rotates, the rotation of the wind baffle 2 will cause the traction rope 33 to pull, causing the first separation plate 3 to rotate upward, leaving a channel for the first slide 21. At the same time, the second separation plate 31 rotates downward to open, facilitating the discharge of impurities. Through the rotation effect of the wind baffle 2, when the vehicle speed increases, the first separation plate 3 can be rotated by the traction rope 33, causing the channel opening of the air supply duct 13 to contract. This allows the airflow carrying heavier impurities to enter the first slide 21 from below the first separation plate 3 for filtration, reducing the occurrence of impurities entering the lithium battery pack frame 1.

[0034] like Figures 2 to 6As shown, a pair of positioning tubes 4 are fixedly connected to both sides of the multiple sets of heat-conducting copper plates 16; a traction rod 41 is fixedly connected between the pair of positioning tubes 4; a positioning plate 42 is provided in the middle of the traction rod 41; a scraper 43 is fixedly connected to both sides of the positioning plate 42; the bottom of the scraper 43 is arc-shaped and its end contacts the side wall of the heat-conducting copper plate 16; during the process of the operator opening and closing the cover plate 11, as the side wall of the heat-conducting copper plate 16 contacts the side wall of the lithium battery pack, the scraper 43 will move. As the scraper 43 moves, it will scrape off the dust and impurities on the side wall of the heat-conducting copper plate 16. The arc shape of its bottom can guide the scraped dust. The scraper 43, which can move up and down on the side wall of the heat-conducting copper plate 16, can scrape off the dust and impurities on the side wall of the heat-conducting copper plate 16, reducing the problem of reduced heat dissipation due to the adhesion of dust and impurities.

[0035] like Figures 6 to 7 As shown, a positioning ring 51 is slidably connected to the middle of the aforementioned traction rod 41; the aforementioned positioning plate 42 is fixedly connected to the side wall of the positioning ring 51; multiple sets of fourth-order sliding grooves 5 are opened in the middle of the aforementioned traction rod 41; multiple sets of protrusions 52 are fixedly connected to the middle of the aforementioned fourth-order sliding grooves 5; a roller 53 is fixedly connected to the middle of the aforementioned positioning ring 51 through a spring rod; the aforementioned roller 53 rolls inside the fourth-order sliding groove 5; during the movement of the scraper 43, the positioning ring 51 will move together. At this time, the roller 53 installed on the inner side wall of the positioning ring 51 will move inside the fourth-order sliding groove 5, and through contact with the multiple sets of protrusions 52, a jerking effect is produced, causing the scraper 43 to produce a shaking effect when it contacts and scrapes the heat-conducting copper plate 16, so that the dust and impurities on the scraper 43 fall off. Through the up-and-down movement of the positioning ring 51, the contact between the roller 53 and the protrusions 52 can be used to produce a shaking effect, so that the dust and impurities scraped off by the scraper 43 fall off, reducing adhesion.

[0036] like Figures 6 to 7 As shown, the bottom of the scraper 43 is covered with a rubber film 6. A rubber plate 61 is fixed to the side wall of the rubber film 6 that contacts the heat-conducting copper plate 16. A cam 62 is installed on the side of the scraper 43 that contacts the heat-conducting copper plate 16. After the staff replaces the lithium battery pack inside the lithium battery pack frame 1, the heat dissipation copper pipe 15 and the heat-conducting copper plate 16 can be reattached to the lithium battery pack. During the attachment and disassembly process, the scraper 43 will move up and down. The movement will drive the cam 62 to rotate, producing a shaking effect. At the same time, the rubber film 6 and the rubber plate 61 can scrape the surface of the heat-conducting copper plate 16 to reduce the adhesion of dust and impurities. Through the movement of the scraper 43, the scraper 63 can contact the rubber plate 61 and the side wall of the heat-conducting copper plate 16 to scrape off the impurities on the surface of the heat-conducting copper plate 16, thereby reducing the impact of impurities on heat transfer and heat dissipation.

[0037] like Figures 6 to 7 As shown, the scraper 43 has a fifth groove 7 on its side wall; the cam 62 is fixed inside the fifth groove 7; multiple sets of support rods 71 ​​are fixed to the side wall of the rubber membrane 6, and the support rods 71 ​​pass through the scraper 43 and contact the side wall of the cam 62; the side wall of the cam 62 has a sixth groove 72 on one side of the support rod 71; during the movement of the scraper 43, the cam 62 rotates as it contacts the side wall of the heat-conducting copper plate 16, and while generating vibration, the cam 62 moves inside the fifth groove 7, causing the sixth groove 72 to contact the support rod 71, which causes the rubber membrane 6 in contact with the support rod 71 to undulate and shake, shaking off the impurities adhering to the rubber membrane 6 and causing them to fall. Through the rotation effect of the cam 62, the cam 62 inside the fifth groove 7 can be displaced. At this time, the displacement of the cam 62 drives the support rod 71 and the sixth groove 72 to move, reducing the adhesion of impurities to the surface of the rubber membrane 6.

[0038] like Figures 5 to 8 As shown, the inner walls of the multiple sets of heat dissipation copper pipes 15 are provided with seven grooves 81; the grooves 81 are filled with air bladders 82, and the air bladders 82 are in contact with the side walls of the heat-conducting copper plate 16; the inner walls of the heat dissipation copper pipes 15 are rotatably connected to multiple sets of guide plates 8, and the guide plates 8 are arranged in a circumferential array along the inner walls of the heat dissipation copper pipes 15; during normal operation of the equipment, as the temperature rises, the gas inside the air bladders 82 in contact with the heat-conducting copper plate 16 expands at high temperature, pushing the side walls of the guide plates 8, causing the ends of the guide plates 8 near the heat-conducting copper plate 16 to move closer to each other, reducing the internal channels of the heat dissipation copper pipes 15, increasing the water flow velocity when passing through this area, and through the heating effect, causing the air bladders 82 to expand, causing the guide plates 8 to rotate so that their ends move closer to each other, thereby reducing the internal space of the heat dissipation copper pipes 15. Through the continuity equation in fluid mechanics, the water flow velocity at the guide plates 8 increases, and through the basic principle of heat transfer, the heat dissipation effect is enhanced and the heat is dissipated more quickly.

[0039] like Figures 5 to 8 As shown, sealing plates 9 are slidably connected between the side walls of the multiple sets of guide plates 8; multiple sets of No. 8 grooves 91 are opened on the side wall of the heat-conducting copper plate 16 inside the heat dissipation copper pipe 15; during the process of the multiple sets of guide plates 8 moving and contracting, the sealing plates 9 installed between the multiple sets of guide plates 8 can fill the gaps between the multiple sets of guide plates 8, thereby guiding the movement of water flow so that it can smoothly wash on the surface of the heat-conducting copper plate 16. At the same time, as the water flow washes, the water flow can enter the interior of the No. 8 groove 91. Through the sealing plates 9 installed between the multiple sets of guide plates 8, the gaps can be filled during the rotation of the guide plates 8, thereby reducing the dispersion of water flow and making the water flow smoothly contact the heat-conducting copper plate 16. At the same time, the No. 8 groove 91 increases the contact area with the water flow and increases the heat dissipation speed.

[0040] like Figure 4 As shown, multiple sets of rotating shafts 101 are rotatably connected inside the air inlet pipe 12 and the lithium battery pack frame 1 at the bend of the traction rope 33. During the pulling process of the traction rope 33, its bend will continuously contact the inner wall of the air inlet pipe 12 and the air supply channel 13. Long-term contact will lead to wear. At this time, the rotating shafts 101 installed inside the air inlet pipe 12 and the air supply channel 13 can use their own rotation effect to contact the traction rope 33 and assist the traction rope 33 to move. Through the rotation effect of the rotating shafts 101, the sliding friction between the traction rope 33 and the air inlet pipe 12 and the air supply channel 13 can be changed into rolling friction, thereby reducing friction and reducing the breakage caused by wear.

[0041] Working Principle: During equipment operation, workers can place the lithium battery pack frame 1 on a new energy engineering vehicle. As the vehicle starts, airflow is directed through the air inlet duct 12 and air outlet duct 13 into the space between the lithium battery pack frame 1 and the cover plate 11, blowing on the heat dissipation copper pipe 15. This then drives the hot air out through the exhaust duct 14, reducing heat accumulation inside the lithium battery pack frame 1. Furthermore, as the vehicle speed increases, the current release from the lithium battery pack increases, and the heat also increases. At this time, the increased vehicle speed accelerates the airflow through the interior of the lithium battery pack frame 1. During vehicle testing, as… As the vehicle speed increases, the airflow pushes the wind deflector 2 into the air supply duct 13. At this time, some of the gravel and impurities carried by the airflow enter the air supply duct 13. The heavier gravel and impurities will enter through the first chute 21, be blocked by the filter screen 23, and be discharged outward through the second chute 22. During the movement of the engineering vehicle, as the vehicle speed increases, the wind deflector 2 will rotate under the blowing action of the airflow. At this time, the rotation of the wind deflector 2 will drive the traction rope 33 to generate a pulling effect, causing the first separation plate 3 to rotate upward, leaving the passage of the first chute 21. At the same time, the second separation plate 31 rotates downward to open, making it easier for impurities to be discharged.

[0042] During the opening and closing of the cover plate 11, as the side wall of the heat-conducting copper plate 16 comes into contact with the side wall of the lithium battery pack, the scraper 43 moves. As the scraper 43 moves, it removes dust and impurities from the side wall of the heat-conducting copper plate 16. The arc-shaped design at its bottom guides the scraped dust. During the movement of the scraper 43, the positioning ring 51 moves along with it. At this time, the rollers 53 installed on the inner side wall of the positioning ring 51 move within the fourth slide groove 5. Through contact with multiple sets of protrusions 52, a jerking effect is created, causing the scraper 43 to vibrate when it contacts and scrapes the heat-conducting copper plate 16, causing the dust and impurities on the scraper 43 to fall off. This is done while the staff is cleaning the lithium battery pack inside the lithium battery pack frame 1. After replacement, the heat dissipation copper pipe 15 and the heat-conducting copper plate 16 can be reattached to the lithium battery pack. During the attachment and disassembly process, the scraper 43 will move up and down, and the movement will drive the cam 62 to rotate, producing a shaking effect. At the same time, the rubber film 6 and the rubber plate 61 can scrape the surface of the heat-conducting copper plate 16 to reduce the adhesion of dust and impurities. During the movement of the scraper 43, the cam 62 will rotate as it contacts the side wall of the heat-conducting copper plate 16. While generating vibration, the cam 62 will move inside the fifth slide groove 7, causing the sixth slide groove 72 to contact the support rod 71. This will cause the rubber film 6 in contact with the support rod 71 to produce an undulating shaking effect, which will shake off the impurities adhering to the rubber film 6 and make them fall.

[0043] During normal operation of the equipment, as the temperature rises, the gas inside the airbag 82 that contacts the heat-conducting copper plate 16 expands at high temperature, pushing the side wall of the guide plate 8 and causing the ends of the guide plates 8 near the heat-conducting copper plate 16 to move closer together. This reduces the internal channels of the heat dissipation copper pipe 15, increasing the water flow velocity when it passes through this area. As multiple sets of guide plates 8 move and contract, the sealing plates 9 installed between the multiple sets of guide plates 8 can fill the gaps between them, thereby guiding the water flow so that it can smoothly wash over the surface of the heat-conducting copper plate 16. At the same time, as the water flows, it can enter the interior of the eighth slide 91. During the pulling process of the traction rope 33, its bending points will continuously contact the inner walls of the air inlet pipe 12 and the air delivery duct 13. Prolonged contact can lead to wear. At this time, the rotating shaft 101 installed inside the air inlet pipe 12 and the air delivery duct 13 can use its own rotation to contact the traction rope 33, assisting the traction rope 33 in moving.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A heat dissipation device for lithium battery packs in new energy engineering vehicles, comprising a lithium battery pack frame (1); characterized in that: The top of the lithium battery pack frame (1) is bolted with a cover plate (11); the side wall of the lithium battery pack frame (1) is fixed with an air inlet pipe (12); the top of the lithium battery pack frame (1) is provided with an air supply slot (13), and the air supply slot (13) and the air inlet pipe (12) are connected; multiple sets of exhaust slots (14) are provided on the side of the top of the lithium battery pack frame (1) away from the air inlet pipe (12); a heat dissipation copper pipe (15) is fixed inside the cover plate (11); multiple sets of heat-conducting copper plates (16) are fixed to the side wall of the heat dissipation copper pipe (15), and the heat-conducting copper plates (16) are in contact with the side wall of the lithium battery pack inside the lithium battery pack frame (1).

2. The heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 1, characterized in that: The air inlet pipe (12) is rotatably connected to the end of the air baffle plate (2); the air supply channel (13) is located in the middle of the lithium battery pack frame (1) and a first slide groove (21) is opened; the first slide groove (21) extends through to the side wall of the lithium battery pack frame (1) and a filter screen (23) is fixedly connected to its end; a second slide groove (22) is opened below the first slide groove (21) on one side of the filter screen (23).

3. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 2, characterized in that: The end of the first chute (21) away from the filter screen (23) is rotatably connected to the first separation plate (3). The top side wall of the second chute (22) is hinged to the second separation plate (31) by a torsion spring. The top side wall of the second chute (22) is provided with the third chute (32). The bottom of the wind baffle (2) is fixed with one end of the traction rope (33), and the other end of the traction rope (33) passes through the air inlet pipe (12) and the air supply chute (13) and is connected to the side wall of the second separation plate (31) and the side wall of the first separation plate (3) respectively.

4. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 1, characterized in that: Each of the multiple sets of heat-conducting copper plates (16) has a pair of positioning tubes (4) fixedly connected to both sides; a traction rod (41) is fixedly connected between the pair of positioning tubes (4); a positioning plate (42) is provided in the middle of the traction rod (41); a scraper (43) is fixedly connected to both sides of the positioning plate (42); the bottom of the scraper (43) is arc-shaped and its end is in contact with the side wall of the heat-conducting copper plate (16).

5. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 4, characterized in that: A positioning ring (51) is slidably connected to the middle of the traction rod (41); the positioning plate (42) is fixed to the side wall of the positioning ring (51); multiple sets of fourth slide grooves (5) are opened in the middle of the traction rod (41); multiple sets of protrusions (52) are fixed in the middle of the fourth slide groove (5); a roller (53) is fixed in the middle of the positioning ring (51) by a spring rod; the roller (53) rolls inside the fourth slide groove (5).

6. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 4, characterized in that: The bottom of the scraper (43) is covered with a rubber film (6), and a rubber plate (61) is fixed to the side wall of the rubber film (6) and the side in contact with the heat-conducting copper plate (16). A cam (62) is installed on the side of the scraper (43) and the side in contact with the heat-conducting copper plate (16).

7. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 6, characterized in that: The scraper (43) has a fifth groove (7) on its side wall; the cam (62) is fixed inside the fifth groove (7); the rubber membrane (6) has multiple sets of support rods (71) fixed to its side wall, and the support rods (71) pass through the scraper (43) and contact the side wall of the cam (62); the side wall of the cam (62) has a sixth groove (72) on one side of the support rod (71).

8. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 1, characterized in that: The inner wall of the multiple sets of heat dissipation copper pipes (15) is provided with a No. 7 sliding groove (81); the No. 7 sliding groove (81) is filled with an air bag (82), and the air bag (82) is in contact with the side wall of the heat-conducting copper plate (16); the inner wall of the heat dissipation copper pipe (15) is rotatably connected with multiple sets of guide plates (8), and the multiple sets of guide plates (8) are distributed in a circumferential array along the inner wall of the heat dissipation copper pipe (15).

9. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 8, characterized in that: A sealing plate (9) is slidably connected between the side walls of the multiple sets of guide plates (8); the side wall of the heat-conducting copper plate (16) is provided with multiple sets of No. 8 sliding grooves (91) inside the heat dissipation copper pipe (15).

10. A heat dissipation device for lithium battery packs in new energy engineering vehicles according to claim 3, characterized in that: The air inlet pipe (12) and the lithium battery pack frame (1) are rotatably connected to multiple sets of rotating shafts (101) located at the bend of the traction rope (33).

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