Heat dissipation assembly, battery module and new energy electric vehicle

Abstract

The application discloses a heat dissipation assembly, a battery module and a new energy electric vehicle, and belongs to the technical field of automobile parts. The heat dissipation assembly comprises a first side plate, a second side plate and a plurality of liquid cooling heat dissipation plates. The first side plate and the second side plate are oppositely arranged, and a gap is formed between the first side plate and the second side plate. The plurality of liquid cooling heat dissipation plates are arranged between the first side plate and the second side plate, are spaced apart along the first length direction of the first side plate, are connected with the first side plate and the second side plate respectively, and the surface of each liquid cooling heat dissipation plate is perpendicular to the first length direction. A first spacing space is formed between two adjacent liquid cooling heat dissipation plates, and the first spacing space is used for placing an electric core. The surface of the liquid cooling heat dissipation plate is used for being attached to the surface of the electric core. According to the scheme, the contact area of each electric core and the heat dissipation assembly is increased, and the heat dissipation effect or heating effect of the heat dissipation assembly on the battery module is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, in particular to a heat dissipation assembly, a battery module and a new energy electric vehicle. BACKGROUND

[0002] In a new energy electric vehicle, a battery module is a main carrier of energy, that is, the battery module provides power for the new energy electric vehicle.

[0003] Since the performance of the battery cell is greatly affected by temperature, when the temperature of the battery cell in the battery module is high, the battery cell needs to be cooled. When the temperature of the battery cell in the battery module is low, the battery cell needs to be heated. When heating, only the cooling liquid in the heat dissipation assembly needs to be switched to a liquid with a higher temperature to heat the battery module. Currently, the battery module is usually formed by stacking a plurality of battery cells, and the heat dissipation assembly is located at the bottom surface or one side surface of the battery module, thereby achieving heat dissipation or heating of the battery module.

[0004] However, in the related art, the contact area between the heat dissipation assembly and each battery cell in the battery module is small, resulting in an unsatisfactory heat dissipation effect (or heating effect) of the heat dissipation module. SUMMARY

[0005] The embodiments of the present application provide a heat dissipation assembly, a battery module and a new energy electric vehicle, which can solve the problem of unsatisfactory heat dissipation effect or heating effect in the related art. The technical solutions are as follows:

[0006] In a first aspect, the present application provides a heat dissipation assembly, comprising: a first side plate, a second side plate, and a plurality of liquid cooling heat dissipation plates.

[0007] The first side plate and the second side plate are arranged opposite to each other, and there is a gap between the first side plate and the second side plate.

[0008] The plurality of liquid cooling heat dissipation plates are located between the first side plate and the second side plate, and are spaced apart along a first length direction of the first side plate, and are connected to the first side plate and the second side plate respectively, and the surface of each liquid cooling heat dissipation plate is perpendicular to the first length direction, a first spacing space is formed between two adjacent liquid cooling heat dissipation plates, the first spacing space is used for placing a battery cell, and the surface of the liquid cooling heat dissipation plate is used for being attached to the surface of the battery cell.

[0009] In a possible implementation manner, the liquid cooling heat dissipation plate comprises: a heat conduction plate and four liquid cooling pipes, the four liquid cooling pipes are a first liquid cooling pipe, a second liquid cooling pipe, a third liquid cooling pipe and a fourth liquid cooling pipe.

[0010] The first liquid cooling pipe and the second liquid cooling pipe are respectively located on two sides of the second length direction of the heat conduction plate and are respectively connected with the heat conduction plate.

[0011] The third liquid cooling pipe and the fourth liquid cooling pipe are respectively located on two sides of the first height direction of the heat conduction plate and are respectively connected with the heat conduction plate.

[0012] The adjacent two liquid cooling pipes are connected with each other to form a liquid cooling loop.

[0013] In a possible implementation, the fourth liquid cooling pipe comprises a first pipe segment and a second pipe segment.

[0014] The first end of the first pipe segment and the first end of the second pipe segment are connected, the second end of the first pipe segment is connected with the first liquid cooling pipe, and the second end of the second pipe segment is connected with the second liquid cooling pipe, wherein the first pipe segment and the second pipe segment are not connected.

[0015] The first pipe segment has a liquid inlet on the side away from the heat conduction plate, and the liquid inlet is located at the first end of the first pipe segment, and the second pipe segment has a liquid outlet on the side away from the heat conduction plate, and the liquid outlet is located at the first end of the second pipe segment.

[0016] In a possible implementation, the heat conduction plate comprises a bottom plate, a plurality of partition plates, and a cover plate.

[0017] The plurality of partition plates are distributed at equal intervals along the first height direction, and the surface of each partition plate is perpendicular to the first height direction, and the plurality of partition plates are respectively connected with the bottom plate, and a heat dissipation channel is formed between the adjacent two partition plates.

[0018] The cover plate is located on the side of the plurality of partition plates away from the bottom plate and is respectively connected with the plurality of partition plates.

[0019] The first liquid cooling pipe has a plurality of first through holes on the side close to the heat conduction plate, each first through hole is connected with one heat dissipation channel, and the second liquid cooling pipe has a plurality of second through holes on the side close to the heat conduction plate, each second through hole is connected with one heat dissipation channel.

[0020] In a possible implementation, the first side plate comprises a plurality of first sub-side plates, and the second side plate comprises a plurality of second sub-side plates.

[0021] The plurality of first sub-side plates are stacked along the first length direction, and the first surface of each first sub-side plate is coplanar, and the adjacent two first sub-side plates are connected.

[0022] The second sub-side plates are stacked along the first length direction, and the second surfaces of each of the second sub-side plates are coplanar, and adjacent two of the second sub-side plates are connected;

[0023] One of the liquid cooling heat dissipation plates is connected with one of the first sub-side plates and one of the second sub-side plates.

[0024] In a possible implementation, the first sub-side plate has opposite first and second sides in the first length direction, and the second sub-side plate has opposite third and fourth sides in the first length direction;

[0025] The first side has a first mounting protrusion, and the second side has a first mounting groove, and when the first sub-side plates are stacked, the first mounting protrusion of one of the first sub-side plates is clamped in the first mounting groove of another of the first sub-side plates;

[0026] The third side has a second mounting protrusion, and the fourth side has a second mounting groove, and when the second sub-side plates are stacked, the second mounting protrusion of one of the second sub-side plates is clamped in the second mounting groove of another of the second sub-side plates.

[0027] In a possible implementation, the heat dissipation assembly further includes fastening bolts;

[0028] The first side has at least one first mounting through hole, and when the first sub-side plates are stacked, one of the fastening bolts is located in the coaxial first mounting through holes;

[0029] The third side has at least one second mounting through hole, and when the second sub-side plates are stacked, one of the fastening bolts is located in the coaxial second mounting through holes.

[0030] In a possible implementation, the heat dissipation assembly further includes first and second end plates;

[0031] The first and second end plates are located at two sides of the first side plates along the first length direction respectively, and the first end plate is connected with the first and second sides respectively, and the second end plate is connected with the first and second sides respectively;

[0032] The first end plate and the liquid cooling heat dissipation plate adjacent to the first end plate form a second spacing space, and the second end plate and the liquid cooling heat dissipation plate adjacent to the second end plate form a third spacing space, and the second and third spacing spaces are used for placing an electric core.

[0033] In a second aspect, the present application provides a battery module, which comprises a plurality of battery cells, the heat dissipation assembly as described in any one of the possible implementation manners of the first aspect, and a tray, the plurality of battery cells are located in the heat dissipation assembly and connected with the heat dissipation assembly, and the tray is located at the bottom of the heat dissipation assembly and the plurality of battery cells and connected with the heat dissipation assembly and the plurality of battery cells respectively.

[0034] In a third aspect, the present application provides a new energy electric vehicle, which comprises the heat dissipation assembly as described in any one of the possible implementation manners of the first aspect, or the battery module as described in the second aspect.

[0035] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0036] In the scheme provided by the embodiments of the present application, the heat dissipation assembly comprises a first side plate, a second side plate, and a plurality of liquid-cooled heat dissipation plates, and a first spacing space is formed between two adjacent liquid-cooled heat dissipation plates. The first spacing space is used for placing one battery cell, and the surface of the liquid-cooled heat dissipation plate is used for being attached to the surface of the battery cell to realize heat dissipation or heating for each battery cell. By using the scheme, for each battery cell in the battery module, the contact area of each battery cell with the heat dissipation assembly is increased, which is beneficial to improving the heat dissipation effect or heating effect of the heat dissipation assembly on the battery module.

[0037] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0039] Figure 1 is a structural schematic diagram of a heat dissipation assembly provided by the embodiments of the present application;

[0040] Figure 2 is a structural schematic diagram of a first side plate provided by the embodiments of the present application;

[0041] Figure 3 is a structural schematic diagram of a second side plate provided by the embodiments of the present application;

[0042] Figure 4 is a partial structural schematic diagram of a heat dissipation assembly provided by the embodiments of the present application;

[0043] Figure 5is a local structure schematic diagram of a heat dissipation assembly provided by an embodiment of the present application;

[0044] Figure 6 is a structure schematic diagram of a heat conduction plate provided by an embodiment of the present application;

[0045] Figure 7 is a structure schematic diagram of a liquid cooling heat dissipation plate provided by an embodiment of the present application;

[0046] Figure 8 is a local structure schematic diagram of a liquid cooling heat dissipation plate provided by an embodiment of the present application;

[0047] Figure 9 is a structure schematic diagram of a heat dissipation assembly provided by an embodiment of the present application;

[0048] Figure 10 is a structure schematic diagram of a heat dissipation assembly provided by an embodiment of the present application;

[0049] Figure 11 is a structure schematic diagram of a battery module provided by an embodiment of the present application.

[0050] Legend

[0051] 1, first side plate; 2, second side plate; 3, liquid cooling heat dissipation plate; 4, fastening bolt; 5, first end plate; 6, second end plate;

[0052] 11, first sub-side plate; 21, second sub-side plate; 31, heat conduction plate; 32, first liquid cooling pipe; 33, second liquid cooling pipe; 34, third liquid cooling pipe; 35, fourth liquid cooling pipe; 5A, third mounting through hole;

[0053] 111, first surface; 112, first side surface; 113, second side surface; 211, second surface; 212, third side surface; 213, fourth side surface; 311, bottom plate; 312, partition plate; 313, cover plate; 32A, first through hole; 33A, second through hole; 351, first pipe segment; 352, second pipe segment;

[0054] 112A, first mounting protrusion; 112B, first mounting through hole; 113A, first mounting groove; 212A, second mounting protrusion; 212B, second mounting through hole; 213A, second mounting groove; 312A, heat dissipation channel; 351A, liquid inlet; 352A, liquid outlet;

[0055] 01, battery cell; 02, heat dissipation assembly; 03, tray. DETAILED DESCRIPTION

[0056] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0058] Figure 1 This is a schematic diagram of a heat dissipation component provided in an embodiment of this application. Figure 1 As shown, the heat dissipation assembly includes: a first side plate 1, a second side plate 2, and a plurality of liquid-cooled heat sinks 3. The first side plate 1 and the second side plate 2 are arranged opposite to each other, and there is a gap between the first side plate 1 and the second side plate 2. The plurality of liquid-cooled heat sinks 3 are located between the first side plate 1 and the second side plate 2, and the plurality of liquid-cooled heat sinks 3 are distributed at intervals along a first length direction O1 of the first side plate 1, wherein the first length direction O1 is also the length direction of the second side plate 2, and can also be considered as the length direction of the heat dissipation assembly. Each liquid-cooled heat sink 3 is connected to the first side plate 1 and the second side plate 2 respectively, and the surface of each liquid-cooled heat sink 3 is perpendicular to the first length direction O1. A first gap space is formed between two adjacent liquid-cooled heat sinks 3, and the first gap space is used to place a battery cell. The surface of the liquid-cooled heat sink 3 is used to fit against the surface of the battery cell.

[0059] In related technologies, battery modules are typically formed by stacking multiple battery cells, and the heat dissipation components are located on the bottom or one side of the battery module to dissipate heat or heat the battery module. However, the contact area between the heat dissipation components and each battery cell in these technologies is relatively small, resulting in unsatisfactory heat dissipation or heating effects on the battery module.

[0060] The heat dissipation assembly provided by the embodiments of the present application is used for placing one battery cell in the first spacing space between two adjacent liquid cooling heat dissipation plates 3, and the surface of the liquid cooling heat dissipation plate 3 is used for being attached to the surface of the battery cell, so as to achieve heat dissipation or heating for each battery cell. By using the scheme, the contact area of each battery cell and the heat dissipation assembly is increased for each battery cell in the battery module, which is beneficial to improving the heat dissipation effect or heating effect of the heat dissipation assembly on the battery module.

[0061] Next, the structure of each component in the heat dissipation assembly provided by the embodiments of the present application and the connection relationship between the components are described in detail.

[0062] The first side plate 1 and the second side plate 2

[0063] Figure 2 is a structural schematic diagram of a first side plate provided by the embodiments of the present application, Figure 3 is a structural schematic diagram of a second side plate provided by the embodiments of the present application. As shown in Figure 2 and Figure 3 shown, the first side plate 1 can include a plurality of first sub-side plates 11, the plurality of first sub-side plates 11 are stacked along the first length direction O1, and the first surface 111 of each first sub-side plate 11 is coplanar, and the adjacent two first sub-side plates 11 are connected, and the second side plate 2 can include a plurality of second sub-side plates 21, the plurality of second sub-side plates 21 are stacked along the first length direction O1, and the second surface 211 of each second sub-side plate 21 is coplanar, and the adjacent two second sub-side plates 21 are connected. Wherein, in the heat dissipation assembly, the first surface 111 is opposite to the second surface 211.

[0064] Figure 4 is a partial structural schematic diagram of a heat dissipation assembly provided by the embodiments of the present application. One first sub-side plate 11 and one second sub-side plate 21 are arranged opposite (the first surface 111 Figure 4 (not shown in the figure) is opposite to the second surface 211), and have a spacing. One liquid cooling heat dissipation plate 3 is located in the spacing space formed by one first sub-side plate 11 and one second sub-side plate 21, and is connected with one first sub-side plate 11 and one second sub-side plate 21 respectively, and the corresponding structure is as shown in Figure 1 shown. Wherein, the liquid cooling heat dissipation plate 3 and the first sub-side plate 11 or the second sub-side plate 21 can be integrally formed by injection molding or the like, can be fixedly connected by welding, riveting or bonding or the like, and can be detachably connected by inserting or clamping or the like.

[0065] As an example, two adjacent first sub-side plates 11 can be detachably connected through clamping or splicing, and two adjacent second sub-side plates 21 can also be detachably connected through clamping or splicing. With this scheme, the length of the first side plate 1 and the second side plate 2 can be freely changed according to actual product requirements, which is beneficial to improve the flexibility of the product and improve the applicability of the heat dissipation assembly to different vehicle models. Moreover, for different vehicle models, the first sub-side plate 11 and the second sub-side plate 21 can be reused by using a detachable connection method, which is beneficial to improve the utilization rate of resources and reduce the design and verification cost of new energy electric vehicles.

[0066] Alternatively, two adjacent first sub-side plates 11 can be fixedly connected through welding, riveting or bonding, and two adjacent second sub-side plates 21 can also be fixedly connected through welding, riveting or bonding. A plurality of first sub-side plates 11 can also be integrally formed by injection molding, and a plurality of second sub-side plates 21 can also be integrally formed by injection molding. The connection relationship between the first sub-side plates 11 and the connection relationship between the second sub-side plates 21 are not limited here.

[0067] First sub-side plate 11 and second sub-side plate 21

[0068] Figure 5 is a partial structure schematic diagram of a heat dissipation assembly provided by an embodiment of the present application. Referring to Figure 4 and Figure 5 , the first sub-side plate 11 has opposite first and second side surfaces 112 and 113 in the first length direction O1, and the second sub-side plate 21 has opposite third and fourth side surfaces 212 and 213 in the first length direction O1. The first side surface 112 has a first mounting protrusion 112A, and the second side surface 113 has a first mounting groove 113A. When a plurality of first sub-side plates 11 are stacked, the first mounting protrusion 112A of one of the two adjacent first sub-side plates 11 is clamped in the first mounting groove 113A of the other; the third side surface 212 has a second mounting protrusion 212A, and the fourth side surface 213 has a second mounting groove 213A. When a plurality of second sub-side plates 21 are stacked, the second mounting protrusion 212A of one of the two adjacent second sub-side plates 21 is clamped in the second mounting groove 213A of the other.

[0069] In some examples, for the first sub-side plate 11, the first side 112 has a first mounting protrusion 112A, and the second side 113 has a first mounting groove 113A. The first mounting protrusion 112A is located at the center of the first side 112, and the first mounting groove 113A is located at the center of the second side 113. With this scheme, the stability of the whole is ensured when the two first sub-side plates 11 are clamped together. Similarly, for the second sub-side plate 21, a second mounting protrusion 212A and a second mounting groove 213A are provided, which are similar to the first sub-side plate 11, and will not be described here.

[0070] In other examples, for the first sub-side plate 11, the first side 112 has a plurality of first mounting protrusions 112A, and the second side 113 has a plurality of first mounting grooves 113A. The number of first mounting protrusions 112A is equal to the number of first mounting grooves 113A. The plurality of first mounting protrusions 112A are uniformly distributed in the first side 112. The plurality of first mounting grooves 113A are uniformly distributed in the second side 113. At this time, it is necessary to ensure that when the two first sub-side plates 11 are stacked, each first mounting protrusion 112A in one first sub-side plate 11 can be clamped into a first mounting groove 113A in the other first sub-side plate 21, so as to ensure the stability between the two first sub-side plates 11. Similarly, for the second sub-side plate 21, a plurality of second mounting protrusions 212A and a plurality of second mounting grooves 213A are provided, which are similar to the first sub-side plate 11, and will not be described here.

[0071] As an example, the first sub-side plate 11 and the second sub-side plate 21 can both be made of plastic material. Since the plastic material has a certain strength, and the thermal conductivity coefficient is lower than that of metal material. Therefore, when the plastic material is used, the strength required by the heat dissipation assembly can be met, and the heat exchange between the battery cell and the external environment can be reduced, which can play a heat preservation and insulation effect, thereby being beneficial to improve the heating effect or the heat dissipation effect of the heat dissipation assembly on the battery module.

[0072] Liquid-cooled heat dissipation plate 3

[0073] Figure 6 is a structural schematic diagram of a heat conduction plate provided by an embodiment of the present application. As shown in Figure 6As shown, the liquid cooling heat dissipation plate 3 can include a heat conduction plate 31 and four liquid cooling pipes, which are a first liquid cooling pipe 32, a second liquid cooling pipe 33, a third liquid cooling pipe 34, and a fourth liquid cooling pipe 35. The first liquid cooling pipe 32 and the second liquid cooling pipe 33 are respectively located on both sides of the second length direction O2 of the heat conduction plate 31 and are connected with the heat conduction plate 31. Among them, the surface of the first liquid cooling pipe 32 away from the heat conduction plate 31 is connected with the first side plate 1, and the surface of the second liquid cooling pipe 33 away from the heat conduction plate 31 is connected with the second side plate 2. The third liquid cooling pipe 34 and the fourth liquid cooling pipe 35 are respectively located on both sides of the first height direction H1 of the heat conduction plate 31 and are connected with the heat conduction plate 31. Adjacent two liquid cooling pipes are connected with each other to form a liquid cooling loop.

[0074] As an example, the four liquid cooling pipes and the heat conduction plate 31 can be integrally formed, or can be fixedly connected by welding, bonding or riveting, or can be detachably connected by clamping or inserting.

[0075] As an example, the four liquid cooling pipes can all adopt square pipes, that is, the radial cross section of the liquid cooling pipe is rectangular. The four liquid cooling pipes can all adopt circular pipes, that is, the shape of the interface of the liquid cooling pipe is circular. The shape of the liquid cooling pipe is not limited here.

[0076] Fourth liquid cooling pipe 35

[0077] As shown, Figure 6 The fourth liquid cooling pipe 35 can include a first pipe section 351 and a second pipe section 352. The first end of the first pipe section 351 and the first end of the second pipe section 352 are connected, and the second end of the first pipe section 351 is connected with the first liquid cooling pipe 32, and the second end of the second pipe section 352 is connected with the second liquid cooling pipe 33, wherein the first pipe section 351 and the second pipe section 352 are not connected. The side of the first pipe section 351 away from the heat conduction plate 31 has a liquid inlet 351A, and the liquid inlet 351A is located at the first end of the first pipe section 351. The side of the second pipe section 352 away from the heat conduction plate 31 has a liquid outlet 352A, and the liquid outlet 352A is located at the second end of the second pipe section 352. The cooling liquid or the heating liquid enters the first pipe section 351 from the liquid inlet 351A, then flows through the first liquid cooling pipe 32, the third liquid cooling pipe 34, the second liquid cooling pipe 33, and the second pipe section 352 in turn, and finally flows out from the liquid outlet 352A, completing a heat dissipation cycle or a heating cycle.

[0078] As an example, the heat dissipation assembly further comprises a first manifold and a second manifold. The first manifold is in communication with the liquid inlet 351 A on each liquid cooling heat dissipation plate 3, for conveying the cooling liquid or heating liquid into the liquid cooling heat dissipation plate 3. The second manifold is in communication with the liquid outlet 352A on each liquid cooling heat dissipation plate 3, for conveying the cooling liquid or heating liquid in the liquid cooling heat dissipation plate 3 to the outside. The specific structure of the first manifold and the second manifold, the connection mode between the first manifold and the liquid inlet 351 A, and the connection mode between the second manifold and the liquid outlet 352A are not limited here.

[0079] Thermal conductive plate 31

[0080] Figure 7 is a structural schematic diagram of a heat conduction plate provided by an embodiment of the present application. As shown in Figure 7 , the heat conduction plate 31 in the liquid cooling heat dissipation plate 3 can include a bottom plate 311, a plurality of partition plates 312, and a cover plate 313. The plurality of partition plates 312 are distributed at equal intervals along a first height direction H1, and the surface of each partition plate 312 is perpendicular to the first height direction H1, and the plurality of partition plates 312 are respectively connected with the bottom plate 311. The adjacent two partition plates 312 form a heat dissipation channel 312A. The cover plate 313 is located on the side of the plurality of partition plates 312 away from the bottom plate 311, and the cover plate 313 is respectively connected with the plurality of partition plates 312.

[0081] Figure 8 is a partial structural schematic diagram of a liquid cooling heat dissipation plate provided by an embodiment of the present application. As shown in Figure 8 , the first liquid cooling pipe 32 has a plurality of first through holes 32A on the side close to the heat conduction plate 31, and each first through hole 32A is in communication with a heat dissipation channel 312A. The second liquid cooling pipe 33 has a plurality of second through holes 33A on the side close to the heat conduction plate 31, and each second through hole 33A is in communication with a heat dissipation channel 312A. In this case, the cooling liquid or heating liquid enters the first pipe section 351 from the liquid inlet 351A, then flows to the first liquid cooling pipe 32, and then is divided into the third liquid cooling pipe 34 and the heat dissipation channel 312A by the first liquid cooling pipe 32. The liquid in the third liquid cooling pipe 34 and the heat dissipation channel 312A then converges into the second liquid cooling pipe 33, and finally flows out through the second pipe section 352 and the liquid outlet 352A, completing a heat dissipation cycle or a heating cycle, as shown by the direction of the dashed line in Figure 8 .

[0082] By using this scheme, the internal space of the heat conduction plate 31 can be fully utilized, and the heat dissipation efficiency or heating efficiency of the heat dissipation assembly can be improved, so that the heat dissipation effect or heating effect of the heat dissipation assembly on the battery cell can be improved.

[0083] As an example, the four liquid cooling pipes and the heat conduction plate 31 are all made of metal material, such as aluminum material, etc. The metal material has good heat conduction, which can quickly transfer the heat of the battery cell to the cooling liquid in the liquid cooling heat sink 3, or quickly transfer the heat of the heated liquid in the liquid cooling heat sink 3 to the battery cell, thereby facilitating to improve the heat dissipation effect or heating effect of the heat dissipation assembly on the battery cell.

[0084] Fastening bolt 4

[0085] Figure 9 is a structural schematic diagram of a heat dissipation assembly provided by an embodiment of the present application. As shown in Figure 2 , Figure 3 and Figure 9 , the heat dissipation assembly can further include a fastening bolt 4. For each first sub-side plate 11, the first side surface 112 has at least one first mounting through hole 112B, and when a plurality of first sub-side plates 11 are stacked, one fastening bolt 4 is located in the coaxial plurality of first mounting through holes 112B. For each second sub-side plate 21, the third side surface 212 has at least one second mounting through hole 212B, and when a plurality of second sub-side plates 21 are stacked, one fastening bolt 4 is located in the coaxial plurality of second mounting through holes 212B. With this scheme, when a plurality of first sub-side plates 11 are stacked to form the first side plate 1 and a plurality of second sub-side plates 21 are stacked to form the second side plate 2, the fastening bolt 4 can play a role in fixing the first side plate 1 and the second side plate 2, thereby facilitating to improve the stability of the heat dissipation assembly.

[0086] In some examples, when the first sub-side plate 11 has one first mounting through hole 112B, the first mounting through hole 112B can be located at the upper left corner as shown in Figure 9 , and when a plurality of first sub-side plates 11 are stacked along the first length direction O1, the first mounting through hole 112B of each first sub-side plate 11 is coaxial, and one fastening bolt 4 is located in the plurality of first mounting through holes 112B, that is, one fastening bolt 4 passes through the first mounting holes 112B of all first sub-side plates 11. When the second sub-side plate 21 has one second mounting through hole 212B, the second mounting through hole 212B can be located at the lower right corner as shown in Figure 9 , and when a plurality of first sub-side plates 11 are stacked along the first length direction O1, one fastening bolt 4 is located in the coaxial plurality of second mounting through holes 212B.

[0087] In some examples, the first sub-side plate 11 has a plurality of first mounting holes 112B, and the plurality of first mounting holes 112B can be uniformly distributed in the first side surface 112. Similarly, when a plurality of first sub-side plates 11 are stacked along the first length direction O1, the fastening bolt 4 is located in the plurality of first mounting holes 112B which are coaxial. When the second sub-side plate 21 has a plurality of second mounting holes 212B, the plurality of second mounting holes 212B can be uniformly distributed in the third side surface 212. Similarly, when a plurality of second sub-side plates 21 are stacked along the first length direction O1, the fastening bolt 4 is located in the plurality of second mounting holes 212B which are coaxial.

[0088] As for the number of fastening bolts 4, no limitation is made herein, and it is necessary to ensure that the number of fastening bolts 4 is equal to the sum of the number of first mounting holes 112B on one first sub-side plate 11 and the number of second mounting holes 212B on one second sub-side plate 21.

[0089] As an example, the first mounting hole 112B and the second mounting hole 212B are both threaded holes which can be matched with the fastening bolt 4.

[0090] Alternatively, the first mounting hole 112B and the second mounting hole 212B are both light holes, and the heat dissipation assembly can further include a fastening nut for matching with the fastening bolt 4. The fastening bolt 4 passes through the plurality of first mounting holes 112B (or the plurality of second mounting holes 212B) which are coaxial from one end and matches with the fastening nut from the other end, thereby facilitating the stability of the heat dissipation assembly.

[0091] The first end plate 5 and the second end plate 6

[0092] Figure 10 is a structural schematic diagram of a heat dissipation assembly provided by an embodiment of the present application. As shown in the figure, Figure 10 the heat dissipation assembly can further include a first end plate 5 and a second end plate 6. The first end plate 5 and the second end plate 6 are respectively located on both sides of the first side plate 1 along the first length direction O1, and the first end plate 5 is connected with the first side plate 1 and the second side plate 2 respectively, and the second end plate 6 is connected with the first side plate 1 and the second side plate 2 respectively. A second spacing space is formed between the first end plate 5 and the liquid-cooled heat dissipation plate 3 adjacent thereto, and a third spacing space is formed between the second end plate 6 and the liquid-cooled heat dissipation plate 3 adjacent thereto, wherein the second spacing space and the third spacing space are both used for placing one battery cell. With this scheme, the space at both ends of the heat dissipation assembly can be used to arrange battery cells, thereby facilitating the overall space utilization. In addition, the first end plate 5 and the second end plate 6 can play a clamping support role for the entire heat dissipation assembly, thereby facilitating the stability of the heat dissipation assembly.

[0093] In some examples, as Figure 10As shown, the surface of the first end plate 5 may have multiple third mounting through holes 5A, which are opposite to the first mounting through hole 112B or the second mounting through hole 212B; the surface of the first end plate 6 may have multiple fourth mounting through holes ( Figure 10 (Not shown in the image), the fourth mounting through hole is opposite to either the first mounting through hole 112B or the second mounting through hole 212B. This design ensures that the aforementioned fastening bolt 4 passes sequentially through the third mounting through hole 5A, the first mounting through hole 112B (or the second mounting through hole 212B), and the fourth mounting through hole, thereby improving the stability of the entire heat dissipation assembly.

[0094] As an example, the third mounting through hole 5A and the fourth mounting through hole can both be threaded holes or both be smooth holes; no restrictions are imposed here.

[0095] In the heat dissipation assembly provided in this application embodiment, the first gap between two adjacent liquid cooling heat dissipation plates 3 is used to place a battery cell, and the surface of each liquid cooling heat dissipation plate 3 can be used to contact the surface of the battery cell to dissipate heat or heat each battery cell. By adopting this solution, the contact area between each battery cell and the heat dissipation assembly is increased, which is beneficial to improving the heat dissipation or heating effect of the heat dissipation assembly on the battery module.

[0096] Based on the same technical concept, this application provides a battery module. Figure 11 This is a schematic diagram of the structure of a battery module provided in an embodiment of this application. Figure 11 As shown, the battery module includes multiple battery cells 01, a heat dissipation component 02 provided in any of the embodiments of this application, and a tray 03. The multiple battery cells 01 are located within the heat dissipation component 02 and are connected to it. As an example, the surface of each battery cell 01 can be bonded to the surface of the liquid cooling heat sink 3 in the heat dissipation component 02 using thermally conductive silicone to improve heat dissipation or heating efficiency. The tray 03 is located at the bottom of the heat dissipation component 01 and the multiple battery cells 02, and is connected to both. The tray 03 supports the heat dissipation component 01 and the multiple battery cells 02. This design allows for a larger contact area between the battery cells 01 and the liquid cooling heat sink 3 in the heat dissipation component 02, which is beneficial for improving the heat dissipation or heating effect on the battery cells 01. Furthermore, this design allows for adjustments to the size of the heat dissipation component 02 according to actual product requirements, improving overall applicability and further reducing R&D costs.

[0097] Based on the same technical concept, the application provides a new energy electric vehicle, which comprises any one of the heat dissipation assemblies provided by the application or the battery module provided by the application. By using the scheme, the heat dissipation effect or heating effect of the heat dissipation assembly on the battery cell is improved, so that the service life of the whole vehicle and the driving experience of the user of the new energy electric vehicle are improved.

[0098] The above is only an optional embodiment of the application and is not used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A heat dissipating assembly, characterized by, The heat dissipation assembly comprises a first side plate (1), a second side plate (2), and a plurality of liquid-cooled heat dissipation plates (3); The first side plate (1) and the second side plate (2) are oppositely arranged, and there is a gap between the first side plate (1) and the second side plate (2); The plurality of liquid-cooled heat dissipation plates (3) are located between the first side plate (1) and the second side plate (2), and are spaced along the first length direction (O1) of the first side plate (1), and are respectively connected with the first side plate (1) and the second side plate (2), and the surface of each liquid-cooled heat dissipation plate (3) is perpendicular to the first length direction (O1), and a first spacing space is formed between two adjacent liquid-cooled heat dissipation plates (3), and the first spacing space is used for placing an electric core, and the surface of the liquid-cooled heat dissipation plate (3) is used for being attached to the surface of the electric core; The first side plate (1) comprises a plurality of first sub-side plates (11), and the second side plate (2) comprises a plurality of second sub-side plates (21); The plurality of first sub-side plates (11) are stacked along the first length direction (O1), and the first surface (111) of each first sub-side plate (11) is coplanar, and two adjacent first sub-side plates (11) are connected; The plurality of second sub-side plates (21) are stacked along the first length direction (O1), and the second surface (211) of each second sub-side plate (21) is coplanar, and two adjacent second sub-side plates (21) are connected; One liquid-cooled heat dissipation plate (3) is connected with one first sub-side plate (11) and one second sub-side plate (21) respectively; The heat dissipation assembly further comprises a fastening bolt (4); The first sub-side plate (11) has opposite first and second side surfaces (112, 113) in the first length direction (O1), and the second sub-side plate (21) has opposite third and fourth side surfaces (212, 213) in the first length direction (O1); The first side surface (112) has at least one first mounting through hole (112B), and when the plurality of first sub-side plates (11) are stacked, one fastening bolt (4) is located in the coaxial plurality of first mounting through holes (112B); The third side surface (212) has at least one second mounting through hole (212B), and when the plurality of second sub-side plates (21) are stacked, one fastening bolt (4) is located in the coaxial plurality of second mounting through holes (212B).

2. The heat dissipation assembly of claim 1, wherein, The liquid-cooled heat dissipation plate (3) comprises a heat conduction plate (31) and four liquid-cooled pipes, which are a first liquid-cooled pipe (32), a second liquid-cooled pipe (33), a third liquid-cooled pipe (34), and a fourth liquid-cooled pipe (35); The first liquid-cooled pipe (32) and the second liquid-cooled pipe (33) are respectively located on both sides of the second length direction (O2) of the heat conduction plate (31) and are respectively connected with the heat conduction plate (31); The third liquid cooling pipe (34) and the fourth liquid cooling pipe (35) are respectively located on both sides of the first height direction (H1) of the heat conduction plate (31) and are connected with the heat conduction plate (31); The adjacent two liquid cooling pipes are connected with each other to form a liquid cooling loop.

3. The heat dissipation assembly of claim 2, wherein, The fourth liquid cooling pipe (35) comprises a first pipe section (351) and a second pipe section (352); The first end of the first pipe section (351) and the first end of the second pipe section (352) are connected, the second end of the first pipe section (351) is connected with the first liquid cooling pipe (32), the second end of the second pipe section (352) is connected with the second liquid cooling pipe (33), and the first pipe section (351) is not connected with the second pipe section (352); The first pipe section (351) is provided with an inlet (351A) on the side away from the heat conduction plate (31), and the inlet (351A) is located at the first end of the first pipe section (351); and the second pipe section (352) is provided with an outlet (352A) on the side away from the heat conduction plate (31), and the outlet (352A) is located at the first end of the second pipe section (352).

4. The heat dissipating assembly of claim 3, wherein, The heat conduction plate (31) comprises a bottom plate (311), a plurality of partition plates (312), and a cover plate (313); The plurality of partition plates (312) are distributed at equal intervals along the first height direction (H1), the surface of each partition plate (312) is perpendicular to the first height direction (H1), and the plurality of partition plates (312) are connected with the bottom plate (311), and a heat dissipation channel (312A) is formed between adjacent two partition plates (312); The cover plate (313) is located on the side of the plurality of partition plates (312) away from the bottom plate (311) and is connected with the plurality of partition plates (312) respectively; The first liquid cooling pipe (32) is provided with a plurality of first through holes (32A) on the side close to the heat conduction plate (31), each first through hole (32A) is connected with a heat dissipation channel (312A) respectively, and the second liquid cooling pipe (33) is provided with a plurality of second through holes (33A) on the side close to the heat conduction plate (31), each second through hole (33A) is connected with a heat dissipation channel (312A) respectively.

5. The heat dissipation assembly of claim 1, wherein, The first side (112) is provided with a first mounting protrusion (112A), the second side (113) is provided with a first mounting groove (113A), and when the plurality of first sub-side plates (11) are stacked, the first mounting protrusion (112A) of one of the adjacent two first sub-side plates (11) is clamped in the first mounting groove (113A) of the other; The third side (212) is provided with a second mounting protrusion (212A), the fourth side (213) is provided with a second mounting groove (213A), and when the plurality of second sub-side plates (21) are stacked, the second mounting protrusion (212A) of one of the adjacent two second sub-side plates (21) is clamped in the second mounting groove (213A) of the other.

6. The heat dissipating assembly according to any one of claims 1-4, wherein, The heat dissipation assembly further comprises a first end plate (5) and a second end plate (6); The first end plate (5) and the second end plate (6) are respectively located on both sides of the first side plate (1) along the first length direction (O1), and the first end plate (5) is connected with the first side plate (1) and the second side plate (2), and the second end plate (6) is connected with the first side plate (1) and the second side plate (2); The first end plate (5) and the liquid-cooled heat dissipation plate (3) adjacent thereto form a second spacing space, and the second end plate (6) and the liquid-cooled heat dissipation plate (3) adjacent thereto form a third spacing space, and the second spacing space and the third spacing space are both used for placing an electric core.

7. A battery module, characterized by The battery module comprises a plurality of electric cores (01), the heat dissipation assembly (02) according to any one of claims 1-6, and a tray (03), the plurality of electric cores (01) are located in the heat dissipation assembly (02) and connected with the heat dissipation assembly (02), and the tray (03) is located at the bottom of the heat dissipation assembly (01) and the plurality of electric cores (02) and connected with the heat dissipation assembly (01) and the plurality of electric cores (02) respectively.

8. A new energy electric vehicle, characterized in that, The new energy electric vehicle comprises the heat dissipation assembly according to any one of claims 1-6 or the battery module according to claim 7.

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