Support heat dissipation device and battery module

Abstract

The utility model belongs to the technical field of batteries, and discloses a support heat dissipation device and a battery module, the support heat dissipation device is used for being placed between battery cells of a battery cell stack body, and comprises a heat dissipation plate and a plurality of elastic plates; the heat dissipation plate comprises a first heat dissipation plate and a second heat dissipation plate, and the first heat dissipation plate and the second heat dissipation plate are oppositely arranged; the elastic plates are located between the first heat dissipation plate and the second heat dissipation plate, one end of each elastic plate is connected with the first heat dissipation plate, the other end of each elastic plate is connected with the second heat dissipation plate, and the at least two elastic plates are arranged in a staggered mode. According to the utility model, the risk that the elastic plate is deformed or damaged when being extruded or impacted by the outside is reduced, so that the whole supporting heat dissipation device keeps heat dissipation and ventilation, the deformation of the battery cell in the use process is reduced, meanwhile, the stress nonuniformity of a large surface in the expansion process of the battery cell is reduced, and the service life of the whole battery module is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a supporting heat dissipation device and a battery module. Background Art

[0002] Although a new type of existing heat dissipation duct splint has solved the problems of heat dissipation of battery cells and buffering the expansion of battery cells, for example, a heat dissipation duct splint for a battery module with a publication number of CN216250878U includes at least two side panels and a plurality of elastic support members, the side panels are arranged in parallel with each other, an air duct is arranged between the side panels, the elastic support members are arranged between the side panels and arranged in parallel up and down, and the elastic support members divide the air duct into a plurality of sub-air ducts. Although a plurality of elastic support members are provided, the plurality of elastic support members are arranged in parallel up and down, and the two ends are staggered up and down to form an inclined surface in the middle, providing vertical support, but when the elastic support member is subjected to a force consistent with the inclined surface, due to the lack of lateral support, the entire elastic support member appears to be relatively soft and cannot provide sufficient rigid support, resulting in the elastic support member being unable to evenly disperse the pressure, increasing the risk of deformation or damage of the elastic support member as a whole. Utility Model Content

[0003] The main purpose of the utility model is to provide a support heat dissipation device and a battery module, aiming to solve the technical problem that the elastic support members are arranged in parallel above and below and staggered at both ends, lacking lateral support, causing the elastic support members to be easily deformed or damaged.

[0004] In order to achieve the above-mentioned utility model object, the utility model proposes a supporting heat dissipation device, which is used to be placed between the battery cells of the battery cell stack, and includes a heat dissipation plate and a plurality of elastic plates;

[0005] It includes a heat dissipation plate and a plurality of elastic plates;

[0006] The heat dissipation plate comprises a first heat dissipation plate and a second heat dissipation plate, wherein the first heat dissipation plate is arranged opposite to the second heat dissipation plate;

[0007] The elastic plate is located between the first heat sink and the second heat sink, one end of the elastic plate is connected to the first heat sink, and the other end is connected to the second heat sink, and at least two elastic plates are arranged in a staggered manner.

[0008] Furthermore, the elastic plate extends along the length direction of a group of opposite sides of the heat sink, and the length of the elastic plate is less than or equal to the length of the opposite sides of the heat sink, and greater than or equal to half the length of the opposite sides of the heat sink.

[0009] Furthermore, the rectangle is a long rectangle, and the elastic plate extends along the length direction of the heat dissipation plate.

[0010] Further, the elastic plate includes a first elastic plate and a second elastic plate, one end of the first elastic plate is arranged at the first end of the first heat dissipation plate, and the other end is arranged at the second end of the second heat dissipation plate, and one end of the second elastic plate is arranged at the second end of the first heat dissipation plate, and the other end is arranged at the first end of the second heat dissipation plate;

[0011] The connection points of the first elastic plate and the second elastic plate on the first heat dissipation plate are arranged diagonally, and the connection points of the first elastic plate and the second elastic plate on the second heat dissipation plate are arranged diagonally.

[0012] Further, the elastic plate includes a first supporting portion, a second supporting portion and an inclined portion, the first supporting portion is connected to the first heat dissipation plate, the second supporting portion is connected to the second heat dissipation plate, and the inclined portion is connected between the first supporting portion and the second supporting portion.

[0013] Further, the heat sink is provided with fixing columns, and the fixing columns include at least two first fixing columns arranged diagonally on the first heat sink, and at least two second fixing columns arranged diagonally on the second heat sink;

[0014] The elastic plate is provided with through holes, and the through holes include a first through hole provided on the first supporting portion for the first fixing column to pass through, and a second through hole provided on the second supporting portion for the second fixing portion to pass through.

[0015] Furthermore, the first fixing column and the second fixing column are respectively integrated with the first heat sink and the second heat sink.

[0016] Furthermore, the height of the fixing column is greater than or equal to the depth of the through hole, and less than the distance between the first heat dissipation plate and the second heat dissipation plate.

[0017] Furthermore, the thickness of the first heat sink and the second heat sink are respectively 1 mm-10 mm.

[0018] Furthermore, the distance between the first heat sink and the second heat sink is 2 mm-8 mm.

[0019] The utility model further provides a battery module, comprising the support and heat dissipation device as described in any of the above embodiments, and also comprising a battery cell stack, wherein the support and heat dissipation device is arranged between adjacent battery cells in the battery cell stack.

[0020] Furthermore, it also includes a plurality of cable ties, which are used to bind the battery cell stack so that the supporting heat dissipation device located between adjacent battery cells is in a pre-tightened state.

[0021] Beneficial effects:

[0022] The elastic plate of the utility model is located between the first heat plate and the second heat plate, one end of the elastic plate is connected to the first heat plate, and the other end is connected to the second heat plate, and the adjacent elastic plates are arranged in a staggered manner, so that the elastic plate can provide support in the vertical direction while also increasing lateral support, thereby effectively increasing the overall stability of the heat plate, making the elastic plate more uniform and stable when subjected to force, thereby effectively increasing the overall stability of the elastic plate. At the same time, the multiple elastic plates arranged in a staggered manner can make the force applied more evenly dispersed to the entire elastic plate structure, reduce pressure concentration, increase the rigidity of the overall elastic plate, and reduce the risk of deformation or damage of the elastic plate when subjected to external extrusion or impact, so that the entire supporting heat dissipation device can reduce the deformation of the battery cell during use while maintaining heat dissipation and ventilation, thereby improving the service life of the entire battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a supporting heat dissipation device according to an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of the elastic plate of one embodiment of the utility model;

[0025] Figure 3 The figure is a schematic diagram of the overall structure of a battery module according to an embodiment of the present invention.

[0026] in:

[0027] 1. Heat sink; 2. Elastic plate; 3. Fixing column; 4. Through hole; 5. Battery cell; 6. Cable tie; 7. Support heat sink;

[0028] 10. First heat sink; 11. Second heat sink; 12. First end; 13. Second end;

[0029] 20. first supporting portion; 21. second supporting portion; 22. inclined portion; 23. first elastic plate; 24. second elastic plate;

[0030] 30. First fixing column; 31. Second fixing column;

[0031] 40. First through hole; 41. Second through hole.

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] Reference Figure 1-Figure 3 , this embodiment provides a supporting heat dissipation device 7, which is used to be placed between the battery cells 5 of the battery cell stack, and includes a heat dissipation plate 1 and a plurality of elastic plates 2;

[0038] The heat dissipation plate 1 includes a first heat dissipation plate 10 and a second heat dissipation plate 11, wherein the first heat dissipation plate 10 and the second heat dissipation plate 11 are arranged opposite to each other;

[0039] The elastic plate 2 is located between the first heat sink 10 and the second heat sink 11 , one end of the elastic plate 2 is connected to the first heat sink 10 , and the other end is connected to the second heat sink 11 , and at least two elastic plates 2 are arranged in an alternating manner.

[0040] In the above embodiment, the support heat dissipation device 7 is used to be placed between the battery cells 5 of the battery cell stack, and includes a heat dissipation plate 1 and a plurality of elastic plates 2, wherein the heat dissipation plate 1 includes a first heat dissipation plate 10, and a second heat dissipation plate 11 arranged opposite to the first heat dissipation plate 10, the first heat dissipation plate 10 and the second heat dissipation plate 11 are separate parts, and the first heat dissipation plate 10 and the second heat dissipation plate 11 have the same size, the thickness of the first heat dissipation plate 10 is preferably 1mm-10mm, and the thickness of the second heat dissipation plate 11 is preferably 1mm-10mm, and the material of the heat dissipation plate 1 includes but is not limited to aluminum plate or carbon steel plate , effectively conduct and dissipate the heat generated by the battery cell 5, reduce the temperature of the battery cell 5, and keep the battery cell 5 within a safe operating temperature range; multiple elastic plates 2 are arranged between the first heat sink 10 and the second heat sink 11, and one end of the elastic plate 2 is connected to the first heat sink 10, and the other end of the elastic plate 2 is connected to the second heat sink 11, so that the first heat sink 10 and the second heat sink 11 are connected and supported by the elastic plate 2, so that a certain distance is formed between the first heat sink 10 and the second heat sink 11, and the distance between the air duct channels is preferably 2mm-8m m, used to conduct the temperature generated by the battery cell 5 to the heat dissipation plate 1, and then dissipate the heat generated by the battery cell 5 through the air circulation of the air duct channel, thereby improving the heat dissipation efficiency of the battery cell 5. In addition, when multiple elastic plates 2 are arranged between the first heat dissipation plate 10 and the second heat dissipation plate 11, at least two elastic plates 2 are arranged in a staggered manner, so that they form an X shape between the first heat dissipation plate 10 and the second heat dissipation plate 11. Therefore, the staggered multiple elastic plates 2 ensure that the elastic plates 2 provide support in the vertical direction between the first heat dissipation plate 10 and the second heat dissipation plate 11, while also increasing the lateral support of the elastic plates 2 between the first heat dissipation plate 10 and the second heat dissipation plate 11, so that the elastic plates 2 are more uniform and stable when subjected to force, effectively increasing the overall stability of the elastic plates 2. At the same time, the staggered multiple elastic plates 2 can make the applied force more evenly dispersed in the entire elastic plate 2 structure, reduce the pressure concentration, increase the rigidity of the overall elastic plate 2, and reduce the risk of deformation or damage of the elastic plate 2 when subjected to external extrusion or impact, so that the entire support heat dissipation device 7 can reduce the deformation of the battery cell 5 during use while maintaining heat dissipation and ventilation, thereby improving the service life of the entire battery module.

[0041] Reference Figure 1In one embodiment, the heat sink 1 is rectangular, the elastic plate 2 extends along the length direction of a set of opposite sides of the heat sink 1, and the length of the elastic plate 2 is less than or equal to the length of the opposite sides of the heat sink 1, and greater than or equal to half the length of the opposite sides of the heat sink 1.

[0042] In the above embodiment, when the heat sink 1 is rectangular, wherein the rectangle includes but is not limited to a rectangle or a square, the elastic plate 2 is arranged in the length direction of any group of opposite sides of the rectangular heat sink 1, and extends along the length direction of the opposite sides, the length of the elastic plate 2 is less than or equal to the length of the opposite sides of the heat sink 1, and the minimum length of the elastic plate 2 is not less than half the length of the heat sink 1; when the heat sink 1 is rectangular, the elastic plate 2 is arranged in the length direction of the rectangular heat sink 1, and the elastic plate 2 extends along the length direction of the heat sink 1, ensuring that the elastic plate 2 has sufficient lateral support area between the first heat sink 10 and the second heat sink 11, reducing the risk of deformation or damage of the elastic plate 2 when subjected to external extrusion or impact.

[0043] Reference Figure 1 In one embodiment, the elastic plate 2 includes a first elastic plate 23 and a second elastic plate 24, one end of the first elastic plate 23 is arranged at the first end 12 of the first heat dissipation plate 10, and the other end is arranged at the second end 13 of the second heat dissipation plate 11, and one end of the second elastic plate 24 is arranged at the second end 13 of the first heat dissipation plate 10, and the other end is arranged at the first end 12 of the second heat dissipation plate 11;

[0044] The connection points of the first elastic plate 23 and the second elastic plate 24 on the first heat dissipation plate 10 are diagonally arranged, and the connection points of the first elastic plate 23 and the second elastic plate 24 on the second heat dissipation plate 11 are diagonally arranged.

[0045] In the above embodiment, when there are two elastic plates 2, they include a first elastic plate 23 and a second elastic plate 24, and the first elastic plate 23 and the second elastic plate 24 are arranged between the first heat sink 10 and the second heat sink 11 at intervals, and the first elastic plate 23 and the second elastic plate 24 are respectively arranged on both sides between the first heat sink 10 and the second heat sink 11 and are arranged correspondingly. The elastic plate 2 is preferably a rectangular spring sheet, and the material of the spring sheet includes but is not limited to spring steel, polymer material (polyamide, polycarbonate, polyimide) or fiberglass plastic. After the elastic plate 2 receives the force from the heat sink 1, the elastic plate 2 can quickly return to its original state after being subjected to the force, thereby ensuring the stability and durability of the elastic plate 2, and being able to maintain stable elastic properties during long-term use, thereby extending the service life of the elastic plate 2; in addition, one end of the first elastic plate 23 is arranged at the first end 12 of the first heat sink 10, and the other end of the first elastic plate 23 is arranged at the first end 12 of the first heat sink 10, and the other end of the first elastic plate 23 is arranged at the first end 13 of the first heat sink 10, and the second end of the first elastic plate 23 is arranged at the first end 14 of the first heat sink 10, and the second end of the first elastic plate 23 is arranged at the first end 15 of the first heat sink 10, and the second end of the first elastic plate 23 is arranged at the first end 16 of the first heat sink 10, and the second end of the first elastic plate 23 is arranged at the first end 17 of the first heat sink 10, and the second end of the first elastic plate 23 is arranged at the first end 18 of the first heat sink 10, and the second end of the first elastic plate 23 is arranged at the first end 19 of the first heat sink 10, and the second end of The second end 13 of the second heat sink 11, one end of the second elastic plate 24 is arranged at the second end 13 of the first heat sink 10, and the other end of the second elastic plate 24 is arranged at the first end 12 of the second heat sink 11. The first heat sink 10 and the second heat sink 11 are rectangular, and the connection points of the first elastic plate 23 and the second elastic plate 24 on the first heat sink 10 are diagonally arranged, and the connection points of the first elastic plate 23 and the second elastic plate 24 on the second heat sink 11 are also diagonally arranged, so that the connection points on the first heat sink 10 and the second heat sink 11 are arranged on the heat sink 1 in a diagonal manner, wherein the connection method between the elastic plate 2 and the heat sink 1 includes but is not limited to welding or gluing. Therefore, by setting the connection points diagonally, it can be ensured that the forces acting on the two elastic plates 2 are evenly distributed, which helps to reduce local stress concentration, improves the strength of the overall structure of the elastic plate 2, helps to reduce the deformation and failure risks of the elastic plate 2, and extends its service life.

[0046] Reference Figure 1-Figure 2 In one embodiment, the elastic plate 2 includes a first supporting portion 20, a second supporting portion 21 and an inclined portion 22, the first supporting portion 20 is connected to the first heat dissipation plate 10, the second supporting portion 21 is connected to the second heat dissipation plate 11, and the inclined portion 22 is connected between the first supporting portion 20 and the second supporting portion 21.

[0047] In the above embodiment, the elastic plate 2 includes a first supporting portion 20, a second supporting portion 21 and an inclined portion 22, wherein the first supporting portion 20 is tightly connected to the first heat dissipation plate 10, the second supporting portion 21 is tightly connected to the second heat dissipation plate 11, and the inclined portion 22 is located between the first heat dissipation plate 10 and the second heat dissipation plate 11 in an inclined state, and is used to connect the first supporting portion 20 and the second supporting portion 21, and the first supporting portion 20, the second supporting portion 21 and the inclined portion 22 are an integrated part, which reduces the seams and gaps between the three, improves the overall strength of the elastic plate 2, and avoids the falling off or loosening caused by the looseness of independent connection components. In addition, the angle formed between the inclined portion 22 and the first heat dissipation plate 10 is the same as the angle formed between the inclined portion 22 and the second heat dissipation plate 11, so that when the elastic plate 2 is subjected to extrusion pressure, the force on the inclined portion 22 is more balanced, which helps the elastic plate 2 to withstand greater extrusion pressure.

[0048] Reference Figure 1 In one embodiment, the heat sink 1 is provided with fixing columns 3, and the fixing columns 3 include at least two first fixing columns 30 arranged diagonally on the first heat sink 10, and at least two second fixing columns 31 arranged diagonally on the second heat sink 11;

[0049] The elastic plate 2 is provided with through holes 4 , and the through holes 4 include a first through hole 40 provided on the first supporting portion 20 for the first fixing column 30 to pass through, and a second through hole 41 provided on the second supporting portion 21 for the second fixing portion to pass through.

[0050] In the above embodiment, a fixing column 3 is arranged on the heat sink 1, and the fixing column 3 includes at least two first fixing columns 30 and at least two second fixing columns 31 of the same size, wherein the first fixing columns 30 are arranged on the first heat sink 10 in a diagonal arrangement, and the second fixing columns 31 are arranged on the second heat sink 11 in a diagonal arrangement, and the length of the closest distance from the center of the first fixing column 30 to the first heat sink 10 is equal to the distance on one side of the short side, and the length of the closest distance from the center of the second fixing column 31 to the second heat sink 11 is equal to the distance on one side of the short side, which helps to evenly distribute the force of the elastic plate 2 on the heat sink 1, reduce local stress concentration, and increase the force balance of the heat sink 1. The first support portion 20 is connected to the first heat sink 10 through the first fixing column 30, and the second support portion 21 is connected to the second heat sink 11 through the second fixing column 31. Through the diagonally arranged fixing columns 3, the elastic plate 2 is connected to the heat sink 1 , effectively improving the space utilization efficiency of the heat dissipation plate 1, reducing the space waste between the first heat dissipation plate 10 and the second heat dissipation plate 11, and making the installation of multiple elastic plates 2 more compact and efficient; a through hole 4 is provided on the elastic plate 2, and the through hole 4 includes a first through hole 40 and a second through hole 41 of the same size, wherein the first through hole 40 is provided on the first support portion 20 for the first fixing column 30 to pass through the first support portion 20, and the second through hole 41 is provided on the second support portion 21 for the second fixing column 31 to pass through the second support portion 21, and the first through hole 40 is located at the center position of the first support portion 20, and the second through hole 41 is located at the center position of the second support portion 21, wherein the fixing column 3 is connected in the through hole 4 by a tight fit, and the elastic plate 2 is detachably connected to the fixing column 3, so that the elastic plate 2 is easier to install and disassemble during arrangement, which is beneficial to the maintenance personnel to repair and replace the elastic plate 2, and reduces the workload and time cost during the maintenance process.

[0051] Furthermore, the first fixing column 30 is an integral part with the first heat sink 10, and the second fixing column 31 is an integral part with the second heat sink 11, ensuring that the fixing column 3 and the heat sink 1 are tightly connected, making the connection more stable and reliable, and helping to maintain a firm connection between the elastic plate 2 and the heat sink 1 when connecting the elastic plate 2, reducing the risk of loosening and falling off.

[0052] Furthermore, the height of the fixing column 3 is greater than or equal to the depth of the through hole 4. When the elastic plate 2 is subjected to elastic compression by the force, the elastic plate 2 is still connected to the fixing column 3, which effectively prevents the elastic plate 2 from falling off the fixing column 3, improves the stability of the connection, and avoids the risk of loosening or falling off. In addition, the height of the fixing column 3 is less than the width distance of the spacing formed between the first heat sink 10 and the second heat sink 11, and the height of the fixing column 3 is preferably half the width distance of the spacing. The elastic plate 2 can provide sufficient elasticity when squeezed, and can also avoid excessive squeezing of the elastic plate 2 causing instability or failure of the entire supporting heat sink 7, thereby ensuring the stable operation of the entire supporting heat sink 7.

[0053] Reference Figure 1 , Figure 3 The utility model further proposes a battery, comprising the support and heat dissipation device 7 described in any of the above embodiments, and also comprising a battery cell stack, wherein the support and heat dissipation device 7 is arranged between adjacent battery cells 5 in the battery cell stack.

[0054] In the above embodiment, the battery includes a supporting heat dissipation device 7 and a battery cell stack, wherein the supporting heat dissipation device 7 is arranged between adjacent battery cells 5 in the battery cell stack, and the length and width of the side of the heat dissipation plate 1 that contacts the battery cell 5 are the same, ensuring that the battery cell 5 is in full contact with the heat dissipation plate 1, thereby effectively improving the heat dissipation efficiency of the battery cell 5. In addition, when the battery cell 5 expands and contracts during the charging and discharging process, the elastic plate 2 arranged between the first heat dissipation plate 10 and the second heat dissipation plate 11 can eliminate the stress caused by the expansion and contraction of the battery cell 5, reduce the deformation degree of the battery cell 5, thereby improving the service life of the battery cell 5, and the elastic plate 2 can provide a certain compression space when the battery cell 5 expands, and provide a certain extension space when the battery cell 5 contracts, so that the battery cell 5 always remains in a suitable position, maintains a stable connection state, and avoids detachment or displacement.

[0055] Reference Figure 1 , Figure 3 In one embodiment, it further includes a plurality of cable ties 6, wherein the cable ties 6 are used to bundle the battery cell stack so that the supporting heat dissipation device 7 located between adjacent battery cells 5 is in a pre-tightened state.

[0056] In the above embodiment, the battery also includes a plurality of cable ties 6, wherein the cable ties 6 are used to bundle the battery cell stack so that the battery cells in the battery cell stack are firmly bundled together by the cable ties to prevent the battery cells 5 from moving or misaligning. At the same time, the supporting heat dissipation device 7 located between adjacent battery cells 5 is in a pre-tightened state so that the supporting heat dissipation device 7 forms a stable connection with the adjacent battery cells 5, ensuring that the battery cells 5 are subjected to a certain pre-tightening force. Maintaining an appropriate pre-tightening force can meet the use requirements, ensure the normal operation and stable connection of the battery cells 5, and improve the service life of the entire battery module.

[0057] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A support heat dissipation device, used to be placed between the cells of a cell stack, characterized in that: It includes a heat dissipation plate and a plurality of elastic plates; The heat dissipation plate comprises a first heat dissipation plate and a second heat dissipation plate, wherein the first heat dissipation plate is arranged opposite to the second heat dissipation plate; The elastic plate is located between the first heat sink and the second heat sink, one end of the elastic plate is connected to the first heat sink, and the other end is connected to the second heat sink, and at least two elastic plates are arranged in a staggered manner.

2. The support and heat dissipation device according to claim 1, characterized in that: The heat sink is rectangular, the elastic plate extends along the length direction of a set of opposite sides of the heat sink, and the length of the elastic plate is less than or equal to the length of the opposite sides of the heat sink, and greater than or equal to half the length of the opposite sides of the heat sink.

3. The support and heat dissipation device according to claim 2, characterized in that: The rectangle is a long rectangle, and the elastic plate extends along the length direction of the heat dissipation plate.

4. The support and heat dissipation device according to claim 1, characterized in that: The elastic plate comprises a first elastic plate and a second elastic plate, one end of the first elastic plate is arranged at the first end of the first heat dissipation plate, and the other end is arranged at the second end of the second heat dissipation plate, one end of the second elastic plate is arranged at the second end of the first heat dissipation plate, and the other end is arranged at the first end of the second heat dissipation plate; The connection points of the first elastic plate and the second elastic plate on the first heat dissipation plate are arranged diagonally, and the connection points of the first elastic plate and the second elastic plate on the second heat dissipation plate are arranged diagonally.

5. The support and heat dissipation device according to claim 1, characterized in that: The elastic plate includes a first supporting portion, a second supporting portion and an inclined portion, the first supporting portion is connected to the first heat dissipation plate, the second supporting portion is connected to the second heat dissipation plate, and the inclined portion is connected between the first supporting portion and the second supporting portion.

6. The support and heat dissipation device according to claim 5, characterized in that: The heat sink is provided with fixing columns, and the fixing columns include at least two first fixing columns arranged diagonally on the first heat sink, and at least two second fixing columns arranged diagonally on the second heat sink; The elastic plate is provided with through holes, and the through holes include a first through hole provided on the first supporting portion for the first fixing column to pass through, and a second through hole provided on the second supporting portion for the second fixing column to pass through.

7. The support and heat dissipation device according to claim 6, characterized in that: The first fixing column and the second fixing column are respectively integrated with the first heat dissipation plate and the second heat dissipation plate.

8. The support and heat dissipation device according to claim 6, characterized in that: The height of the fixing column is greater than or equal to the depth of the through hole and less than the distance between the first heat dissipation plate and the second heat dissipation plate.

9. The support and heat dissipation device according to claim 1, characterized in that: The thickness of the first heat sink and the second heat sink are 1 mm-10 mm respectively.

10. The support and heat dissipation device according to claim 1, characterized in that: The distance between the first heat dissipation plate and the second heat dissipation plate is 2 mm-8 mm.

11. A battery module, comprising the supporting heat dissipation device according to any one of claims 1 to 10, characterized in that: It also includes a battery cell stack, and the supporting heat dissipation device is arranged between adjacent battery cells in the battery cell stack.

12. The battery module according to claim 11, characterized in that: It also includes a plurality of cable ties, which are used to bind the battery cell stack so that the supporting heat dissipation device located between adjacent battery cells is in a pre-tightened state.

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