Hydrothermal coupling heat dissipation device for battery module of new energy automobile

Abstract

The invention discloses a new energy automobile battery module hydrothermal coupling heat dissipation device, and relates to the technical field of battery heat dissipation. Comprising a shell, a plurality of placing frames are arranged on the inner side of the shell, sliding mechanisms are arranged between the two ends of each placing frame and the shell, phase change pieces are pasted to the two sides of a battery pack, a flexible channel is formed between every two adjacent phase change pieces, a liquid supply header pipe and a liquid outlet header pipe are connected to the two sides of the shell respectively, and a driving mechanism is arranged on the inner side of the shell; the rack is used for driving the rack to move. According to the invention, the phase change sheets absorb heat for a short time when the battery emits heat, then the cooling medium input by the liquid supply header pipe passes through the flexible channel between the two mutually separated placing racks, the cooling medium can complete heat exchange with the phase change sheets on the two sides of the cooling medium, and the heat dissipation effect is realized by continuously changing the two separated placing racks; and only one flexible channel can circulate at the same time, so that the occupied space is small, and the internal structure layout of the automobile is facilitated.

Description

Technical Field

[0001] This invention relates to the field of battery heat dissipation technology, specifically to a thermal fluid coupling heat dissipation device for a new energy vehicle battery module. Background Technology

[0002] New energy vehicle battery cooling systems primarily employ air cooling, liquid cooling, and direct cooling methods. Air cooling utilizes fans to accelerate airflow and remove heat, offering low cost but efficiency affected by environmental conditions. Liquid cooling efficiently absorbs heat through coolant circulation, enabling precise temperature control, but its structure is complex and costly. Direct cooling leverages the gas-liquid phase change of the refrigerant for rapid cooling, achieving the highest efficiency, but also presenting the greatest technical challenges and costs. Some models also incorporate thermally conductive silicone pads to enhance heat transfer efficiency, ensuring stable battery operation within a safe temperature range.

[0003] Battery pack heat dissipation is a key factor in whether a battery can achieve its full efficiency. For example, a high-efficiency heat dissipation device for a new energy vehicle battery module, patent publication number CN113422142A, includes a new energy battery assembly for installation, a gas evaporation mechanism for heat dissipation based on gas evaporation, and a hot gas extraction mechanism for extracting hot gas based on pressure changes. The new energy battery assembly has an internal shell, through which the gas evaporation mechanism is fixedly connected. This high-efficiency heat dissipation device for a new energy vehicle battery module utilizes the continuous airflow impact on the airbags during vehicle operation to draw water into internal drainage pipes, dissipating heat from the battery pack and preventing heat buildup. As vehicle speed changes, the water flowing into the internal drainage pipes mixes with the water on the airbags, ensuring efficient heat dissipation for the battery pack.

[0004] The battery packs of new energy vehicles generate heat during charging and discharging. Heat dissipation is needed to keep the battery packs at their optimal operating temperature. The aforementioned devices and existing heat dissipation devices all require a certain amount of space between the battery packs for the flow of heat to transfer heat. When there are many battery packs, the space for the flow of heat will increase, resulting in a larger volume and making it unfavorable for the interior space layout. Summary of the Invention

[0005] The purpose of this invention is to provide a thermally coupled heat dissipation device for battery modules in new energy vehicles, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat dissipation device for a new energy vehicle battery module, comprising a housing, wherein a plurality of placement racks are provided on the inner side of the housing, and a plurality of battery packs are placed on the inner side of the placement racks; a sliding mechanism is provided between the two ends of the placement racks and the housing for moving the placement racks; phase change plates are attached to both sides of the battery packs, and the outer sides of the phase change plates are flush with the outer sides of the placement racks; a flexible channel is provided between two adjacent phase change plates, and a connecting pipe is connected to both ends of the flexible channel; a liquid supply main pipe and a liquid outlet main pipe are respectively connected to both sides of the housing, and the connecting pipes are respectively connected and communicated with the liquid supply main pipe and the liquid outlet main pipe at the corresponding positions; a driving mechanism is provided on the inner side of the housing for driving the placement racks to move.

[0007] Preferably, the sliding mechanism includes several equally spaced support blocks fixed inside the housing. Both ends of the support blocks are fixed with stop blocks, and the upper surface of the support blocks is provided with a sliding groove. Both ends of the placement frame are fixed with fixing blocks, and mounting blocks are fixed on the fixing blocks. The mounting blocks are located directly above the support blocks, and a limit block is provided below the mounting blocks. The limit block is slidably disposed in the sliding groove.

[0008] Preferably, the driving mechanism includes two movable blocks slidably disposed on both sides of the housing. Both sides of the housing are provided with long slots, and the movable blocks are slidably disposed in the long slots. A threaded hole is provided at one end of the movable block on the outer side of the housing. A threaded rod is rotatably disposed on the outer side of the housing, and the threaded rod is threadedly connected to the movable block through the threaded hole. A first double-headed motor is installed on the adjacent side of the housing, and the two ends of the first double-headed motor are respectively connected to the two threaded rods through two first bevel gear pairs. A trapezoidal extrusion block is provided above one end of the movable block on the inner side of the housing. Extrusion components for separating the placement frame are provided at both ends of the placement frame.

[0009] Preferably, the extrusion assembly includes a lifting block located between two placement frames. Both ends of the lifting block are provided with extrusion chamfers, and the lifting block is provided with two second rotating shafts distributed vertically. Two first rotating shafts distributed vertically are fixed on both sides of the end of the placement frame. A connecting rod is rotatably connected to the first rotating shaft, and the other end of the connecting rod is hinged to the second rotating shaft. The two connecting rods on the same side are parallel to each other.

[0010] Preferably, the connecting rod has a clearance opening, and the clearance opening of the upper connecting rod is located at the lower edge, while the clearance opening of the lower connecting rod is located at the upper edge.

[0011] Preferably, the drive mechanism further includes a switching assembly, which includes two switching rods rotatably connected inside the housing. A protruding rod is fixed to one side of each switching rod, and a lifting rod is fixed above the other side of the switching rod. A lifting groove is provided above one end of the moving block in the housing. A trapezoidal extrusion block is slidably disposed in the lifting groove, and the lower end of the trapezoidal extrusion block abuts against the upper surface of the lifting rod. Both ends of the switching rod extend to the outside of the housing and are rotatably connected to the housing. A second dual-head motor is installed on the side wall of the housing opposite to the first dual-head motor, and the upper ends of the second dual-head motors are all connected to the two switching rods through a second bevel gear pair.

[0012] Preferably, a first magnetic block is fixed at the lower end of the trapezoidal extrusion block, and a second magnetic block is fixed at the bottom of the lifting groove, with the first magnetic block and the second magnetic block having the same magnetic poles distributed opposite each other.

[0013] Preferably, the inner side of the connecting pipe is provided with a one-way communication structure, and the one-way communication structure includes a fixing plate fixed to the inner wall of the connecting pipe, the fixing plate having a plurality of through holes, and a soft pad fixed to the inner wall of the connecting pipe, and the soft pad having a fine groove, the fine groove being offset from the through holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are: When the battery heats up, the phase change plates absorb heat for a short time. Then, the drive mechanism separates two adjacent mounting brackets (while the rest remain in place). At this time, the cooling medium supplied by the main supply pipe passes through the flexible channel between the two separated mounting brackets, while the other flexible channels are closed. The cooling medium can exchange heat with the phase change plates on both sides, carrying away the heat dissipated by the battery. Moreover, the drive mechanism can continuously change the two separated mounting brackets, so that the phase change plates can dissipate heat in time after absorbing heat, achieving a heat dissipation effect. At the same time, only one flexible channel can flow, while the other flexible channels are contracted, occupying less space and facilitating the internal structural layout of the car.

[0015] Meanwhile, the lifting block is kept in position between the two placement frames by the action of the four connecting rods. The two second rotating shafts are distributed vertically, and the two first rotating shafts on the same side are also distributed vertically, forming a parallelogram structure to ensure that the lifting block will not tilt. When the trapezoidal extrusion block passes from below, it can extrude the lifting block upward by the extrusion chamfer, and then separate the two placement frames to the sides by the connecting rods on both sides, making the structure more stable.

[0016] Moreover, when the car is accelerating rapidly, all batteries discharge simultaneously, generating heat quickly. At this time, the switching lever can rotate under the drive of the second dual-head motor, rotating the convex rod upward to raise all the lifting blocks simultaneously. At the same time, the lifting rod rotates downward, allowing the trapezoidal extrusion block to move downward without obstructing the movement of the placement rack. This increases the flow rate of the cooling medium, dissipating heat in time and thus coping with the high load situation of all batteries discharging simultaneously.

[0017] Furthermore, when the cooling medium flows into the connecting pipe from one side of the fixed plate, it can first pass through the through hole and then push open the soft pad to achieve a flow effect. This is the function of the one-way communication structure in the connecting pipe connected to the main supply pipe. When the cooling medium flows in from one side of the soft pad, the soft pad is blocked by the fixed plate. At this time, the cooling medium cannot push open the soft pad, so the cooling medium will be obstructed. This is the function of the one-way communication structure in the connecting pipe connected to the main outlet pipe. Under the action of the two one-way communication structures in different directions, the flexible channel can draw in the cooling medium when it expands and can discharge the cooling medium when it contracts, thereby improving the flow dynamics of the cooling medium and further improving the cooling effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the other side of the present invention; Figure 3 This is a schematic diagram of the internal structure of the shell in this invention; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the extrusion component in this invention; Figure 6 This is a schematic diagram of the structure inside the shell in this invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A; Figure 8 This is a side view of the switching component in this invention. Figure 9 This is a cross-sectional view of the switching component in this invention; Figure 10 This is a schematic diagram of the unidirectional connected structure in this invention.

[0019] In the diagram: 1. Housing; 2. Placement rack; 3. Battery pack; 4. Phase change plate; 5. Flexible channel; 6. Liquid supply main pipe; 7. Connecting pipe; 8. Support block; 9. Stop block; 10. Slide groove; 11. Fixing block; 12. Mounting block; 13. Limiting block; 14. Long slot; 15. Moving block; 16. Threaded rod; 17. First double-headed motor; 18. First bevel gear pair; 19. Trapezoidal extrusion block; 20. First rotating shaft ; 21. Connecting rod; 22. Lifting block; 23. Extrusion chamfer; 24. Second rotating shaft; 25. Clearance opening; 26. Switching rod; 27. Protruding rod; 28. Lifting rod; 29. ​​Lifting groove; 30. Fine groove; 31. First magnetic block; 32. Second magnetic block; 33. Fixing plate; 34. Through hole; 35. Soft pad; 36. Liquid outlet main pipe; 37. Threaded hole; 38. Second double-headed motor; 39. Second bevel gear pair. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-10 As shown, the present invention provides a technical solution: a heat dissipation device for a new energy vehicle battery module with thermal coupling, including a housing 1, a plurality of placement racks 2 are arranged on the inner side of the housing 1, and a plurality of battery packs 3 are placed on the inner side of the placement racks 2. A sliding mechanism is provided between the two ends of the placement racks 2 and the housing 1 for moving the placement racks 2. Phase change plates 4 are attached to both sides of the battery packs 3, and the outer side of the phase change plates 4 is flush with the outer side of the placement racks 2. A flexible channel 5 is provided between two adjacent phase change plates 4, and a connecting pipe 7 is connected to both ends of the flexible channel 5. A liquid supply main pipe 6 and a liquid outlet main pipe 36 are respectively connected to both sides of the housing 1, and the connecting pipes 7 are respectively connected and communicated with the liquid supply main pipe 6 and the liquid outlet main pipe 36 at the corresponding positions. A driving mechanism is provided on the inner side of the housing 1 for driving the placement racks 2 to move.

[0022] It should be noted that the phase change plate 4 made of metal foam composite phase change material is used in this embodiment. The specific material is not limited. When the battery heats up, the phase change plate 4 absorbs heat for a short time. Then, the driving mechanism drives two adjacent placement racks 2 to separate (the remaining placement racks 2 are close together). At this time, the cooling medium input from the liquid supply main pipe 6 passes through the flexible channel 5 between the two separated placement racks 2. The remaining flexible channels 5 are closed. The cooling medium can exchange heat with the phase change plates 4 on both sides and carry away the heat dissipated by the battery. Moreover, the driving mechanism can continuously change the two separated placement racks 2 so that the phase change plate 4 can dissipate heat in time after absorbing heat, thus achieving the heat dissipation effect. At the same time, only one flexible channel 5 can flow, while the remaining flexible channels 5 are contracted, which occupies less space and facilitates the internal structural layout of the car.

[0023] like Figure 4 and Figure 7 As shown, the sliding mechanism includes several equally spaced support blocks 8 fixed inside the housing 1. Both ends of the support blocks 8 are fixed with stop blocks 9, and the upper surface of the support blocks 8 is provided with a sliding groove 10. Both ends of the placement frame 2 are fixed with fixing blocks 11, and mounting blocks 12 are fixed on the fixing blocks 11. The mounting blocks 12 are located directly above the support blocks 8, and a limit block 13 is provided below the mounting blocks 12. The limit block 13 is slidably disposed in the sliding groove 10.

[0024] It should be noted that the mounting block 12 is supported by the support blocks 8 at both ends, thereby supporting the placement frame 2. The mounting block 12 can slide a short distance along the slide groove 10 on the support block 8. The two placement frames 2 that need to be separated will separate to both sides under the action of the drive mechanism, so that one mounting block 12 moves to the leftmost end of the support block 8 and the other mounting block 12 moves to the rightmost end of its corresponding support block 8, thereby achieving the separation effect.

[0025] like Figure 1 , Figure 6 and Figure 8 As shown, the driving mechanism includes two movable blocks 15 slidably disposed on both sides of the housing 1. Both sides of the housing 1 are provided with long slots 14. The movable blocks 15 are slidably disposed in the long slots 14. A threaded hole 37 is provided at one end of the movable block 15 on the outer side of the housing 1. A threaded rod 16 is rotatably disposed on the outer side of the housing 1. The threaded rod 16 is threadedly connected to the movable block 15 through the threaded hole 37. A first double-headed motor 17 is installed on the adjacent side of the housing 1. The two ends of the first double-headed motor 17 are respectively connected to the two threaded rods 16 through two first bevel gear pairs 18. A trapezoidal extrusion block 19 is provided above one end of the movable block 15 on the inner side of the housing 1. Extrusion components for separating the placement rack 2 are provided at both ends of the placement rack 2.

[0026] It should be noted that the first dual-head motor 17 drives the threaded rod 16 to rotate, and the threaded rod 16 drives the moving block 15 to move laterally when it rotates. Therefore, the first dual-head motor 17 reciprocates, which drives the moving block 15 to move back and forth. When the moving block 15 moves, the trapezoidal extrusion block 19 moves synchronously. When the trapezoidal extrusion block 19 moves to the bottom of any two placement racks 2, the two placement racks 2 will separate. The remaining placement racks 2 will stick to each other under the extrusion of the two placement racks 2. Therefore, the continuous movement of the trapezoidal extrusion block 19 will continuously change the connected flexible channel 5, so that each flexible channel 5 can achieve the effect of intermittent connection, which facilitates the cooling medium to carry away the heat on the phase change plate 4 in time.

[0027] like Figure 3 , Figure 4 and Figure 5 As shown, the extrusion assembly includes a lifting block 22 located between two placement frames 2. Both ends of the lifting block 22 are provided with extrusion chamfers 23, and two vertically distributed second rotating shafts 24 are provided on the lifting block 22. Two vertically distributed first rotating shafts 20 are fixed on both sides of the end of the placement frame 2. A connecting rod 21 is rotatably connected to the first rotating shaft 20. The other end of the connecting rod 21 is hinged to the second rotating shaft 24, and the two connecting rods 21 located on the same side are parallel to each other.

[0028] It should be noted that under the action of the four connecting rods 21, the lifting block 22 can be kept in the position between the two placement frames 2. Moreover, the two second rotating shafts 24 are distributed vertically, and the two first rotating shafts 20 on the same side are also distributed vertically, forming a parallelogram structure to ensure that the lifting block 22 will not tilt. When the trapezoidal extrusion block 19 passes from below, it can extrude the lifting block 22 upward through the extrusion chamfer 23, and then separate the two placement frames 2 to the sides through the connecting rods 21 on both sides (in reality, one is stationary and the other is separated to one side. At this time, the lifting block 22 is still in the middle position between the two placement frames 2. Relative to the placement frames 2, the two placement frames 2 on both sides are separated to the sides).

[0029] like Figure 5 As shown, a clearance opening 25 is provided on the connecting rod 21, and the clearance opening 25 of the upper connecting rod 21 is located at the lower edge, while the clearance opening of the lower connecting rod 21 is located at the upper edge.

[0030] It should be noted that during use, when the lifting block 22 moves downward (due to the squeezing of other placement racks 2, the two previously separated placement racks 2 will move closer to each other, and the corresponding lifting block 22 will descend), the connecting rod 21 will swing downward. At this time, the side of the upper connecting rod 21 will interfere with the lower first rotating shaft 20. At this time, the first rotating shaft 20 can be located in the clearance slot 25. At the same time, the side of the lower connecting rod 21 will interfere with the upper second rotating shaft 24. At this time, the second rotating shaft 24 can be located in the clearance groove 25, making the structural transmission smoother and preventing jamming.

[0031] like Figure 6 , Figure 8 , Figure 2 and Figure 9 As shown, the drive mechanism also includes a switching assembly, which includes two switching rods 26 rotatably connected inside the housing 1. A protruding rod 27 is fixed to the side end of the switching rod 26, and a lifting rod 28 is fixed above the other side of the switching rod 26. A lifting groove 29 is provided above one end of the moving block 15 located at the housing 1. A trapezoidal extrusion block 19 is slidably disposed in the lifting groove 29, and the lower end of the trapezoidal extrusion block 19 abuts against the upper surface of the lifting rod 28. Both ends of the switching rod 26 extend to the outside of the housing 1 and are rotatably connected to the housing 1. A second double-headed motor 38 is installed on the side wall of the housing 1 opposite to the first double-headed motor 17, and the upper ends of the second double-headed motor 38 are all connected to the two switching rods 26 through a second bevel gear pair 39.

[0032] It should be noted that the two switching rods 26 can be rotated by the second dual-head motor 38 and the two second bevel gear pairs 39. When the switching rods 26 are in the initial position, the lifting rod 28 provides support from the bottom of the trapezoidal extrusion block 19 and can lift the lifting block 22 when it passes by. When the car is accelerating rapidly, all batteries discharge at the same time, and heat is generated quickly. At this time, the switching rods 26 can rotate under the drive of the second dual-head motor 38, rotating the convex rod 27 to the top, and lifting all the lifting blocks 22 simultaneously upward (the lifting range is small at this time, which is equivalent to dividing the flow space of the original flexible channel 5 into each flexible channel 5). At the same time, the lifting rod 28 rotates downward, and the trapezoidal extrusion block 19 can move downward without obstructing the movement of the placement rack 2. At this time, the flow rate of the cooling medium can be increased, and heat can be dissipated in time, so as to cope with the high load situation of all batteries discharging at the same time.

[0033] like Figure 9 As shown, a first magnetic block 31 is fixed at the lower end of the trapezoidal extrusion block 19, and a second magnetic block 32 is fixed at the bottom of the lifting groove 29. The first magnetic block 31 and the second magnetic block 32 have the same magnetic poles distributed opposite each other.

[0034] It should be noted that when the lifting rod 28 descends, the trapezoidal pressing block 19 will move downward. At this time, the first magnetic block 31 and the second magnetic block 32 can generate a repulsive force to prevent the trapezoidal pressing block 19 from moving to the bottom. This prevents the trapezoidal pressing block 19 from jamming the lifting rod 28 when the switching rod 26 is reset, thus preventing the switching rod 26 from being unable to reset and improving the smoothness of the structural transmission.

[0035] like Figure 10 As shown, a one-way communication structure is provided on the inner side of the connecting pipe 7, and the one-way communication structure includes a fixing plate 33 fixed to the inner wall of the connecting pipe 7. The fixing plate 33 has several through holes 34. A soft pad 35 is also fixed on the inner wall of the connecting pipe 7, and a groove 30 is provided on the soft pad 35. The groove 30 is separated from the through holes 34.

[0036] It should be noted that when the cooling medium flows into the connecting pipe 7 from one side of the fixed plate 33, the cooling medium can first pass through the through hole 34 and then push open the soft pad 35 to achieve the flow effect. This is the function of the one-way communication structure in the connecting pipe 7 connected to the liquid supply main pipe 6. When the cooling medium flows in from one side of the soft pad 35, the soft pad 35 is blocked by the fixed plate 33. At this time, the cooling medium cannot push open the soft pad 35, so the cooling medium will be obstructed. This is the function of the one-way communication structure in the connecting pipe 7 connected to the liquid outlet main pipe 36. Under the action of the two one-way communication structures in different directions, the flexible channel 5 can draw in the cooling medium when it expands and can discharge the cooling medium when it contracts, thereby improving the flow dynamics of the cooling medium and further improving the cooling effect.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A heat dissipation device for a new energy vehicle battery module with hydrofluid coupling, comprising a housing (1), characterized in that: The inner side of the housing (1) is provided with several placement racks (2), and several battery packs (3) are placed inside the placement racks (2). A sliding mechanism is provided between the two ends of the placement racks (2) and the housing (1) for moving the placement racks (2). Phase change plates (4) are attached to both sides of the battery packs (3), and the outer side of the phase change plates (4) is flush with the outer side of the placement racks (2). A flexible channel (5) is provided between two adjacent phase change plates (4), and both ends of the flexible channel (5) are connected to connecting pipes (7). The two sides of the housing (1) are respectively connected to the liquid supply main pipe (6) and the liquid outlet main pipe (36), and the connecting pipes (7) are respectively connected to and communicate with the liquid supply main pipe (6) and the liquid outlet main pipe (36) at the corresponding positions. A driving mechanism is provided inside the housing (1) for driving the placement racks (2) to move.

2. The thermal coupling heat dissipation device for a new energy vehicle battery module according to claim 1, characterized in that: The sliding mechanism includes several equally spaced support blocks (8) fixed inside the housing (1). Both ends of the support blocks (8) are fixed with stop blocks (9), and the upper surface of the support blocks (8) is provided with a sliding groove (10). Both ends of the placement rack (2) are fixed with fixing blocks (11), and a mounting block (12) is fixed on the fixing block (11). The mounting block (12) is located directly above the support blocks (8), and a limit block (13) is provided below the mounting block (12). The limit block (13) is slidably disposed in the sliding groove (10).

3. The thermal coupling heat dissipation device for a new energy vehicle battery module according to claim 1, characterized in that: The driving mechanism includes two movable blocks (15) slidably disposed on both sides of the housing (1). Both sides of the housing (1) are provided with long slots (14). The movable blocks (15) are slidably disposed in the long slots (14). The movable blocks (15) are provided with a threaded hole (37) at one end of the outer side of the housing (1). A threaded rod (16) is rotatably disposed on the outer side of the housing (1). The threaded rod (16) is threadedly connected to the movable blocks (15) through the threaded hole (37). A first double-headed motor (17) is installed on the adjacent side of the housing (1). The two ends of the first double-headed motor (17) are respectively connected to the two threaded rods (16) through two first bevel gear pairs (18). A trapezoidal extrusion block (19) is provided above one end of the movable blocks (15) on the inner side of the housing (1). Both ends of the placement rack (2) are provided with extrusion components for separating the placement rack (2).

4. The thermally coupled heat dissipation device for a new energy vehicle battery module according to claim 3, characterized in that: The extrusion assembly includes a lifting block (22) located between two placement frames (2). Both ends of the lifting block (22) are provided with extrusion chamfers (23), and the lifting block (22) is provided with two second rotating shafts (24) distributed vertically. Two first rotating shafts (20) distributed vertically are fixed on both sides of the end of the placement frame (2). A connecting rod (21) is rotatably connected to the first rotating shaft (20). The other end of the connecting rod (21) is hinged to the second rotating shaft (24), and the two connecting rods (21) on the same side are parallel to each other.

5. The thermally coupled heat dissipation device for a new energy vehicle battery module according to claim 4, characterized in that: The connecting rod (21) has a clearance opening (25), and the clearance opening (25) of the upper connecting rod (21) is located at the lower edge, while the clearance opening of the lower connecting rod (21) is located at the upper edge.

6. The thermal coupling heat dissipation device for a new energy vehicle battery module according to claim 3, characterized in that: The drive mechanism also includes a switching assembly, which includes two switching rods (26) rotatably connected inside the housing (1). A protruding rod (27) is fixed to the side end of the switching rod (26), and a lifting rod (28) is fixed above the other side of the switching rod (26). A lifting groove (29) is provided above one end of the moving block (15) located in the housing (1). A trapezoidal extrusion block (19) is slidably disposed in the lifting groove (29), and the lower end of the trapezoidal extrusion block (19) abuts against the upper surface of the lifting rod (28). Both ends of the switching rod (26) extend to the outside of the housing (1) and are rotatably connected to the housing (1). A second double-headed motor (38) is installed on the side wall of the housing (1) opposite to the first double-headed motor (17), and the upper ends of the second double-headed motor (38) are connected to the two switching rods (26) through a second bevel gear pair (39).

7. A heat dissipation device for a new energy vehicle battery module with thermal coupling according to claim 6, characterized in that: The lower end of the trapezoidal extrusion block (19) is fixed with a first magnetic block (31), and the bottom of the lifting groove (29) is fixed with a second magnetic block (32). The first magnetic block (31) and the second magnetic block (32) have the same magnetic poles distributed opposite each other.

8. The thermally coupled heat dissipation device for a new energy vehicle battery module according to claim 1, characterized in that: The inner side of the connecting pipe (7) is provided with a one-way communication structure, and the one-way communication structure includes a fixing plate (33) fixed to the inner wall of the connecting pipe (7). The fixing plate (33) has several through holes (34). A soft pad (35) is also fixed to the inner wall of the connecting pipe (7), and a groove (30) is provided on the soft pad (35). The groove (30) is separated from the through holes (34).

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