Vehicle battery pack heat dissipation components, vehicle battery pack components and vehicle

Abstract

This application relates to the field of vehicle battery pack heat dissipation technology, and discloses a heat dissipation component for a vehicle battery pack, a vehicle battery pack assembly, and a vehicle. The heat dissipation component includes: a heat dissipation plate with multiple upward-facing heat dissipation slots for accommodating individual battery cells, and the heat dissipation plate for dissipating heat conducted from the battery cells to the heat dissipation plate; a heat-conducting plate covering the heat dissipation slots and conducting heat from the battery cells and the heat dissipation plate; and a heat sink disposed on the heat-conducting plate for dissipating heat conducted from the heat-conducting plate to the heat sink. Therefore, by placing the battery cells within the heat dissipation slots, each battery cell can be effectively cooled, and the heat dissipation effect can be further enhanced by the heat-conducting plate and the heat sink. Thus, a relatively good heat dissipation effect can be achieved with a simple structure.

Description

Technical Field

[0001] This application relates to the field of vehicle battery pack heat dissipation technology, specifically to a heat dissipation component for a vehicle battery pack, a vehicle battery pack assembly, and a vehicle. Background Technology

[0002] With the development of new energy technologies, battery packs are widely used in electric vehicles, energy storage systems, and other fields. However, battery packs generate a lot of heat during charging and discharging. If heat cannot be dissipated in a timely and effective manner, the battery pack temperature will become too high, affecting its performance, lifespan, and safety.

[0003] Currently, common battery pack heat dissipation methods include air cooling and liquid cooling, but these methods have problems such as limited heat dissipation efficiency, complex structure, and high cost. Moreover, existing technologies have already covered most common heat dissipation ideas and structures, so there is an urgent need to develop a heat dissipation solution with a simple structure and good heat dissipation effect. Utility Model Content

[0004] In view of the above problems, this application provides a heat dissipation component for a vehicle battery pack, a vehicle battery pack assembly, and a vehicle. By placing the individual battery cells within heat dissipation slots, each individual battery cell can be effectively cooled, and the heat dissipation effect can be further enhanced by heat-conducting plates and heat sinks. Therefore, a relatively good heat dissipation effect can be achieved with a simple structure.

[0005] The first aspect of this application provides a heat dissipation assembly for a vehicle battery pack, comprising: a heat dissipation plate having a plurality of upward-facing heat dissipation slots for accommodating individual battery cells, the heat dissipation plate for dissipating heat conducted from the individual battery cells to the heat dissipation plate; a heat-conducting plate covering the heat dissipation slots on top of the heat dissipation plate, the heat-conducting plate for conducting heat from the individual battery cells and the heat dissipation plate; and a heat sink disposed on the heat-conducting plate for dissipating heat conducted from the heat-conducting plate to the heat sink.

[0006] In some specific embodiments, the heat sink includes a first heat sink and a second heat sink, with the first heat sink stacked on top of the second heat sink in its height direction, and a heat-conducting plate disposed on top of the first heat sink.

[0007] In some specific embodiments, the heat dissipation components of the vehicle battery pack also include a water-cooled heat sink plate, which is attached between the first heat sink plate and the second heat sink plate. The water-cooled heat sink plate is used to conduct coolant to dissipate heat from the first heat sink plate, the second heat sink plate, and the battery cells through the coolant.

[0008] In some specific embodiments, a cooling fan and a cooling duct are provided inside the heat sink. The cooling fan and the cooling duct are connected. The cooling duct is located in the middle area of ​​the heat sink. The distance between the edge of the middle area and the edge of the heat sink is greater than a preset distance. The cooling duct is used to conduct the cooling airflow generated by the cooling fan, so as to dissipate heat from the inside of the heat sink and the battery cells through the cooling airflow.

[0009] In some specific embodiments, a hollow area is provided in the middle of the heat sink, the inner wall of the hollow area is the side wall of the heat dissipation air duct, and a heat dissipation structure is provided on the inner wall of the hollow area to dissipate the heat of the heat dissipation air duct.

[0010] In some specific embodiments, the heat sinks are arranged in strips, and the heat sinks extend in a wavy shape along their length, with multiple heat sinks arranged in multiple columns.

[0011] In some specific embodiments, the heat sink includes a heat sink frame and heat sink fins. The heat sink frame forms an upward-opening receiving groove, and the heat sink fins are disposed in the receiving groove. The heat sink fins cooperate with the inner wall of the heat sink frame to form a heat sink groove.

[0012] In some specific embodiments, the heat dissipation component of the vehicle battery pack includes a temperature sensor located in the central region of the heat dissipation plate. The distance between the edge of the central region and the edge of the heat dissipation plate is greater than a preset distance. The temperature sensor is located at the positive and negative terminals of the battery cells.

[0013] A second aspect of this application provides a vehicle battery pack assembly, including: a heat dissipation assembly for a vehicle battery pack as described in any of the above claims; a battery cell and a battery pack housing, wherein the heat dissipation assembly of the vehicle battery pack is partially disposed within the battery pack housing, and the heat sink passes through the battery pack housing and is exposed to the air; and a ventilated protective cover disposed on the battery pack housing, the ventilated protective cover forming a protective space such that the heat sink exposed outside the battery pack housing is located within the protective space.

[0014] A third aspect of this application provides a vehicle including a heat dissipation assembly for a vehicle battery pack as described in any of the preceding claims, or the aforementioned vehicle battery pack assembly.

[0015] This application has at least the following beneficial effects: Based on the vehicle battery pack heat dissipation assembly, vehicle battery pack assembly, and vehicle provided by this application, the heat dissipation assembly includes: a heat dissipation plate with multiple upward-facing heat dissipation slots for accommodating individual battery cells, and the heat dissipation plate for dissipating heat conducted from the battery cells to the heat dissipation plate; a heat-conducting plate covering the heat dissipation slots, and the heat-conducting plate for conducting heat from the battery cells and the heat dissipation plate; and a heat sink disposed on the heat-conducting plate for dissipating heat conducted from the heat-conducting plate to the heat sink. Therefore, by placing the battery cells within the heat dissipation slots, good heat dissipation can be achieved for each battery cell, and the heat dissipation effect can be further enhanced by the heat-conducting plate and the heat sink. Thus, a relatively good heat dissipation effect can be achieved with a simple structure.

[0016] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the heat dissipation assembly of the vehicle battery pack provided in this application;

[0019] Figure 2 yes Figure 1 An enlarged structural diagram of region A in the diagram;

[0020] Figure 3 This is a schematic diagram showing the arrangement of the first and second heat sinks;

[0021] Figure 4 yes Figure 1 The diagram shows a possible arrangement of the heat sink.

[0022] Figure 5 yes Figure 1 Top view of the structure shown;

[0023] Figure 6 yes Figure 1 Side view of the structure shown.

[0024] Explanation of reference numerals in the attached drawings: heat dissipation component 10, heat dissipation plate 11, heat dissipation groove 111, first heat dissipation plate 112, second heat dissipation plate 113, hollow area 114, heat dissipation structure 115, heat conduction plate 12, heat dissipation fin 13, water-cooled heat dissipation plate 14.

[0025] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0029] The first aspect of this application provides a heat dissipation assembly 10 for a vehicle battery pack. Figure 1 This is a schematic diagram of the structure of the heat dissipation component 10 of the vehicle battery pack provided in this application. Figure 2 yes Figure 1 An enlarged structural diagram of region A in the diagram.

[0030] Combination Figure 1 and Figure 2The heat dissipation component 10 of the vehicle battery pack includes a heat sink 11, a heat conduction plate 12, and a heat sink 13, all of which can be made of materials with good thermal conductivity.

[0031] Specifically, the heat sink 11 is provided with multiple upward-facing heat dissipation slots 111. The heat dissipation slots 111 are used to accommodate individual battery cells, and the heat sink 11 is used to dissipate heat conducted from the battery cells to the heat sink 11. The battery pack includes multiple individual battery cells connected together to form a large-capacity battery pack energy storage structure, which serves as the main structure of the battery pack. In this case, each individual battery cell can correspond to one heat dissipation slot 111, allowing different battery cells to be placed in different heat dissipation slots 111 to achieve good heat dissipation for the individual battery cells.

[0032] Regarding the shape and size of the heat dissipation groove 111, its shape can be similar to that of the battery cell, and its size can be slightly larger than that of the battery cell, thus effectively accommodating the battery cell while minimizing the distance between the battery cell and the inner wall of the heat dissipation groove 111. This arrangement of the heat dissipation groove 111 reduces the required space while simultaneously improving the heat dissipation effect of the battery cell. Figure 1 as well as Figure 2 The heat dissipation groove 111 can be rectangular or cubic in shape, but is not limited to this. Regarding the arrangement of the heat dissipation grooves 111, they can be arranged in a regular array for ease of manufacturing, or they can be arranged arbitrarily according to actual needs, thus adapting to different practical applications. For example... Figure 1 as well as Figure 2 The heat dissipation slots 111 are arranged in an array, but are not limited to this.

[0033] It should be understood that the above-described structure allows the heat generated by the battery cells to be conducted to the heat sink 11. Since the heat sink 11 has good thermal conductivity and heat dissipation, it achieves good heat dissipation for the battery cells. However, the heat dissipation effect provided by the heat sink 11 alone is limited. Therefore, this embodiment also provides a heat-conducting plate 12 and a heat sink 13 to further enhance the heat dissipation effect on the battery cells.

[0034] Specifically, a heat-conducting plate 12 is disposed above the heat sink 11 to cover the heat dissipation groove 111. The heat-conducting plate 12 is used to conduct heat between the battery cells and the heat sink 111. The shape and size of the heat-conducting plate 12 are not limited in this embodiment. The heat-conducting plate 12 may cover part or all of the heat dissipation groove 111, depending on actual needs. Figure 1 as well as Figure 2The image only shows an embodiment where the heat-conducting plate 12 covers a portion of the heat dissipation groove 111. It should be understood that by setting the heat-conducting plate 12, on the one hand, it can cover the heat dissipation groove 111, which can provide a certain degree of protection and isolation for the battery cell; on the other hand, it can directly conduct the heat of the battery cell and the heat dissipation plate 11, thereby dissipating the heat generated by the battery cell directly or indirectly, and thus enhancing the heat dissipation effect on the battery cell.

[0035] Both the heat sink 11 and the heat conduction plate 12 exhibit good thermal conductivity and heat dissipation. The heat sink 11 and heat conduction plate 12 are formed using a special nanomaterial preparation process, mixing highly thermally conductive nanoparticles with an organic polymer matrix to create a structure with high thermal conductivity and heat dissipation. During the fabrication process, the proportion of nanoparticles and the size and distribution of pores can be precisely controlled to ensure high thermal conductivity and stability. The organic polymer is a high-molecular-weight compound formed by covalent bonds between elements such as carbon, hydrogen, oxygen, and nitrogen, possessing a long-chain or network structure. In composite materials, the matrix is ​​the continuous phase, and its main functions include: bonding reinforcing materials (such as carbon fibers and glass fibers) into a whole; transferring loads and dispersing stress; and protecting reinforcing materials from environmental damage (such as corrosion and oxidation).

[0036] Specifically, a heat sink 13 is disposed on the heat-conducting plate 12, and the heat sink 13 is used to dissipate the heat conducted from the heat-conducting plate 12 to the heat sink 13. There can be multiple heat sinks 13, and the number of heat sinks 13 can be set according to actual heat dissipation requirements. In this embodiment, the structure of the heat sink 13 can refer to relevant heat sink structures in the prior art, and is not specifically limited. In this embodiment, the main focus is on highlighting the heat dissipation enhancement effect of the heat sink 13 on the heat-conducting plate 12.

[0037] In summary, the heat dissipation assembly 10 for the vehicle battery pack provided in the above embodiments, by placing the battery cells within the heat dissipation grooves 111, can achieve good heat dissipation for each battery cell, and the heat dissipation effect for the battery cells can be further enhanced by the heat-conducting plate 12 and the heat sink 13. Therefore, a relatively good heat dissipation effect can be achieved with a simple structure.

[0038] Figure 3 This is a schematic diagram showing the arrangement of the first heat sink 112 and the second heat sink 113.

[0039] Combination Figure 3Regarding the specific arrangement of the heat sink 11, in some specific embodiments, the heat sink 11 includes a first heat sink 112 and a second heat sink 113. The first heat sink 112 is stacked on top of the second heat sink 113 in its height direction, and the heat-conducting plate 12 is disposed above the first heat sink 112. The structures of the first heat sink 112 and the second heat sink 113 can be identical, and their specific arrangement can refer to the specific arrangement of the heat sink 11 described above.

[0040] By stacking the first heat sink 112 and the second heat sink 113, the installation area of ​​the battery pack can be reduced, facilitating its arrangement. Furthermore, the multi-layered heat sink 11 further enhances its heat dissipation effect. In this configuration, the heat-conducting plate 12 is only positioned above the first heat sink 112, as the heat from the second heat sink 113 is transferred to the first heat sink 112, thus increasing the heat dissipation requirement of the first heat sink 112. Of course, in other embodiments, the number of heat sink 11 layers is not limited to two. For example, the heat sink 11 may have three layers, including a third heat sink 113.

[0041] Combining the multi-layer design of heat sink 11, and continuing to combine Figure 3 In some specific embodiments, the heat dissipation assembly 10 of the vehicle battery pack further includes a water-cooled heat sink 14, which is attached between the first heat sink 112 and the second heat sink 11. The water-cooled heat sink 14 is used to conduct coolant to dissipate heat from the first heat sink 112, the second heat sink 113 and the battery cells through the coolant.

[0042] Specifically, the water-cooled heat sink 14 can be provided with coolant channels to facilitate coolant conduction and heat exchange with the external first heat sink 112 and second heat sink 113, thereby achieving heat dissipation for the first heat sink 112 and second heat sink 113. To complement the water-cooled heat sink 14, the coolant channels of the water-cooled heat sink 14 can be connected to heat exchangers and other structures related to the battery pack, thereby achieving coolant dissipation and circulation. Furthermore, when the number of heat sink layers 11 is greater than two, coolant channels can be provided between adjacent heat sink layers 11 to achieve a more comprehensive heat dissipation effect.

[0043] In some specific embodiments, the heat sink 11 is further configured with a cooling fan and a cooling duct. The cooling fan and the cooling duct are connected, and the cooling duct is located in the central region of the heat sink 11. The distance between the edge of the central region and the edge of the heat sink 11 is greater than a preset distance. The cooling duct is used to conduct the cooling airflow generated by the cooling fan, so as to dissipate heat from the interior of the heat sink 11 and the battery cells through the cooling airflow.

[0044] Specifically, the heat dissipation ducts and heat dissipation slots 111 within the heat sink 11 may or may not be connected; this embodiment does not impose specific limitations. Since the heat dissipation effect is better in the outer region of the heat sink 11 than in the central region, the heat dissipation ducts are located in the central region of the heat sink 11 to improve the heat dissipation effect in the central region, thereby preventing severe overheating in the center of the battery pack. The preset distance between the edge of the central region and the outer edge of the heat sink 11 can be determined based on the specific dimensions of the heat sink 11 and the heat dissipation requirements of the battery pack, and is not specifically limited here.

[0045] Figure 4 yes Figure 1 A schematic diagram of the arrangement of the heat sink 11 is shown.

[0046] Combination Figure 4 In some specific embodiments, a hollow area 114 is provided in the middle of the heat sink 11. The shape of the hollow area 114 is not specifically limited here. Figure 4 The cutout area 114 is shown as an ellipse only as an example. The cutout area 114 can be a place where heat is easily accumulated on the heat sink 11, and the cutout area 114 can be located in the central area mentioned above.

[0047] In this case, the inner wall of the hollow area 114 serves as the side wall of the heat dissipation duct, which can be as follows: Figure 4 As shown in 'a', the heat dissipation duct is arranged around the hollow area 114 to achieve better heat dissipation between the duct and the outside environment, and to achieve better heat dissipation for the area in the middle of the heat sink 11 where heat generation is more severe. To further enhance the heat dissipation effect of the heat dissipation duct, a heat dissipation structure 115 is provided on the inner wall of the hollow area 114. The heat dissipation structure 115 is used to dissipate the heat from the heat dissipation duct. The specific arrangement of the heat dissipation structure 115 can refer to the arrangement of related heat dissipation components in the prior art, and is not specifically limited here. Figure 4 In this embodiment, only a portion of the inner wall is shown with a heat dissipation structure 115, but in other embodiments, the entire inner wall may be provided with a heat dissipation structure 115.

[0048] Figure 5 yes Figure 1Top view of the structure shown. Figure 6 yes Figure 1 Side view of the structure shown.

[0049] Combination Figure 5 as well as Figure 6 In some specific embodiments, the heat sink 13 is arranged in a strip shape, and the heat sink 13 extends in a wavy shape in its length direction, with multiple heat sinks 13 arranged in multiple rows.

[0050] Specifically, the heat sink 13 can be arranged in a strip-like sheet structure, allowing it to have a larger contact area with the air, thereby improving its heat dissipation effect. Figure 5 as well as Figure 6 In this example, the heat sink 13 is exemplarily arranged in a rectangular shape, without a wavy shape along its length. In this embodiment, by arranging the heat sink 13 in a wavy shape along its length, the contact area between the heat sink 13 and the air can be further increased, thereby enhancing the heat dissipation effect of the heat sink 13. Combined with... Figure 6 The height direction of the heat sink 13 is consistent with the height direction of the heat sink 11.

[0051] Combination Figure 1 as well as Figure 5 In some specific embodiments, the heat sink 11 includes a heat sink frame and heat sink fins. The heat sink frame forms an upward-opening receiving groove, and the heat sink fins are disposed within the receiving groove. The heat sink fins cooperate with the inner wall of the heat sink frame to form a heat sink 111. The heat sink frame includes a bottom wall and side walls, with the side walls disposed on the bottom wall, thus forming an upward-opening receiving groove between the bottom wall and the side walls of the heat sink frame. In this case, the side walls of the heat sink frame are the side walls of the heat sink 11. The specific arrangement of the heat sink fins can be determined according to actual needs. The accompanying drawings show that the heat sink fins are configured as horizontal and vertical partitions, thereby dividing the receiving groove into multiple regularly arranged small heat sinks 111. However, in other embodiments, the arrangement of the fins is not limited to this.

[0052] In order to achieve temperature monitoring of the battery pack and control of related heat dissipation structures, in some specific embodiments, the heat dissipation component 10 of the vehicle battery pack includes a temperature sensor (not shown). The temperature sensor is located in the middle region of the heat dissipation plate 11, and the distance between the edge of the middle region and the edge of the heat dissipation plate 11 is greater than a preset distance. The temperature sensor is set at the positive and negative terminals of the battery cell.

[0053] It should be understood that the central region in this embodiment can be the same as the central region in the above embodiments, which is the area of ​​the battery pack where heat generation is more severe. In this case, placing the temperature sensor in the central region enables effective temperature monitoring of the area with more severe heat generation, thereby achieving accurate control of the relevant heat dissipation structure 115. Furthermore, placing the temperature sensor at the positive and negative terminals of the individual battery cells allows for more accurate monitoring of the heat generation of the individual battery cells, achieving precise monitoring of the battery pack temperature.

[0054] A second aspect of this application provides a vehicle battery pack assembly, including: a heat dissipation assembly 10 for a vehicle battery pack as described in any of the above embodiments; a battery cell and a battery pack housing, wherein the heat dissipation assembly 10 is partially disposed within the battery pack housing, and a heat sink 13 passes through the battery pack housing and is exposed to the air; and a ventilated protective cover disposed on the battery pack housing, the ventilated protective cover forming a protective space such that the heat sink 13 exposed outside the battery pack housing is located within the protective space.

[0055] Specifically, in this embodiment, the heat sink 13 passes through the battery pack housing, allowing it to contact the air and thus achieving good heat dissipation for the battery pack. However, the heat sink 13 may be damaged after extending beyond the battery pack housing. Therefore, in this embodiment, a ventilated protective cover is also provided on the battery pack housing to effectively protect the heat sink 13. Furthermore, since the protective cover is ventilated, it also allows the heat sink 13 inside the cover to have good contact with the air, thereby achieving good heat dissipation for the heat sink 13.

[0056] A third aspect of this application provides a vehicle including a heat dissipation assembly 10 for a vehicle battery pack as described in any of the above embodiments or a vehicle battery pack assembly as described in the above embodiments.

[0057] In summary, based on the vehicle battery pack heat dissipation assembly 10, vehicle battery pack assembly, and vehicle provided in this application, the heat dissipation assembly includes: a heat dissipation plate 11 with multiple upward-facing heat dissipation slots 111 for accommodating individual battery cells, and the heat dissipation plate 11 for dissipating heat conducted from the battery cells to the heat dissipation plate 11; a heat-conducting plate 12 covering the heat dissipation slots 111 and conducting heat from the battery cells and the heat dissipation plate 11; and a heat sink 13 disposed on the heat-conducting plate 12 for dissipating heat conducted from the heat-conducting plate 12 to the heat sink 13. Therefore, by placing the battery cells within the heat dissipation slots 111, good heat dissipation can be achieved for each battery cell, and the heat dissipation effect can be further enhanced by the heat-conducting plate 12 and the heat sink 13. Thus, a relatively good heat dissipation effect can be achieved with a simple structure.

[0058] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A heat dissipation assembly for a vehicle battery pack, characterized in that, include: The heat sink has multiple upward-facing heat dissipation slots, which are used to accommodate individual battery cells, and the heat sink is used to dissipate the heat conducted from the individual battery cells to the heat sink. A heat-conducting plate is placed on top of the heat dissipation plate to cover the heat dissipation groove. The heat-conducting plate is used to conduct heat from the battery cell and the heat dissipation plate. A heat sink is disposed on the heat-conducting plate, and the heat sink is used to dissipate the heat conducted from the heat-conducting plate to the heat sink.

2. The heat dissipation assembly for the vehicle battery pack according to claim 1, characterized in that, The heat sink includes a first heat sink and a second heat sink, wherein the first heat sink is stacked on top of the second heat sink in its height direction, and the heat-conducting plate is disposed on top of the first heat sink.

3. The heat dissipation assembly for the vehicle battery pack according to claim 2, characterized in that, The heat dissipation components of the vehicle battery pack also include a water-cooled heat sink plate, which is attached between the first heat sink plate and the second heat sink plate. The water-cooled heat sink plate is used to conduct coolant to dissipate heat from the first heat sink plate, the second heat sink plate and the battery cells through the coolant.

4. The heat dissipation assembly for the vehicle battery pack according to claim 1, characterized in that, The heat sink is equipped with a cooling fan and a cooling duct. The cooling fan is connected to the cooling duct, and the cooling duct is located in the middle area of ​​the heat sink. The distance between the edge of the central region and the edge of the heat sink is greater than a preset distance. The heat dissipation duct is used to conduct the heat dissipation airflow generated by the heat dissipation fan, so as to dissipate heat from the inside of the heat sink and the battery cell through the heat dissipation airflow.

5. The heat dissipation assembly for the vehicle battery pack according to claim 4, characterized in that, The heat sink has a hollow area in the middle, and the inner wall of the hollow area is the side wall of the heat dissipation duct. A heat dissipation structure is provided on the inner wall of the hollow area to dissipate the heat of the heat dissipation duct.

6. The heat dissipation assembly for a vehicle battery pack according to claim 1, characterized in that, The heat sink is arranged in strips, and the heat sink extends in a wavy shape along its length. Multiple heat sinks are arranged in multiple columns.

7. The heat dissipation assembly for a vehicle battery pack according to claim 1, characterized in that, The heat sink includes a heat sink frame and heat sink fins. The heat sink frame forms an upward-opening receiving groove, and the heat sink fins are disposed in the receiving groove. The heat sink fins cooperate with the inner wall of the heat sink frame to form the heat sink groove.

8. The heat dissipation assembly for a vehicle battery pack according to claim 1, characterized in that, The heat dissipation component of the vehicle battery pack includes a temperature sensor located in the central region of the heat dissipation plate. The distance between the edge of the central region and the edge of the heat dissipation plate is greater than a preset distance. The temperature sensor is located at the positive and negative terminals of the individual battery cells.

9. A vehicle battery pack assembly, characterized in that, include: A heat dissipation assembly for a vehicle battery pack as described in any one of claims 1-8; The battery cell and the battery pack housing, wherein the heat dissipation component of the vehicle battery pack is disposed inside the battery pack housing, and the heat dissipation fins pass through the battery pack housing and are exposed to the air; A ventilated protective cover is disposed on the battery pack housing. The ventilated protective cover is used to form a protective space so that the heat sink exposed on the battery pack housing is located within the protective space.

10. A vehicle, characterized in that, Includes the heat dissipation assembly of the vehicle battery pack as described in any one of claims 1-8 or the vehicle battery pack assembly as described in claim 9.

Images