Heat-conducting structure and battery pack

Abstract

The utility model discloses a kind of heat conduction structure and battery pack, heat conduction structure is suitable for being installed between two adjacent battery modules, heat conduction structure includes: heat conduction structure ontology and heat conduction glue;Heat conduction structure ontology has two heat conduction outer side walls mutually away, two heat conduction outer side walls are respectively towards two battery modules setting, heat conduction structure ontology is formed with the middle accommodating groove between two heat conduction outer side walls, heat conduction outer side wall is equipped with side wall accommodating groove;Middle accommodating groove and side wall accommodating groove are filled with heat conduction glue in both.The heat conduction structure of the utility model embodiment, it is suitable for the case that the gap between adjacent battery modules is larger, the consistency of heat conduction glue is good, heat is transferred between adjacent battery modules through heat conduction structure to realize heat dissipation, improve the performance of battery module thermal runaway, the heat conduction structure can also increase the mechanical strength of battery pack, improve the ability of battery pack vibration resistance, impact resistance and extrusion resistance, increase the mechanical reliability of battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a heat-conducting structure and a battery pack. Background Technology

[0002] With the improvement of battery pack thermal safety levels, the thermal diffusion time of battery packs has been further tightened, and it is urgent to improve the thermal insulation and heat dissipation capabilities of battery packs during thermal runaway and improve the thermal runaway performance of battery packs.

[0003] For example, some existing technologies use adhesive bonding between adjacent battery modules and tray ribs to dissipate heat and prevent thermal runaway. However, this method is only suitable for package layouts with trays having intermediate ribs and small gaps. Applying adhesive is difficult and the consistency of the adhesive is poor. Furthermore, it is not suitable for situations where the gap between adjacent battery modules is large. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a thermally conductive structure that is suitable for situations where there is a large gap between adjacent battery modules. The thermally conductive adhesive has good consistency, and heat is transferred between adjacent battery modules through the thermally conductive structure to achieve heat dissipation, improving the performance of the battery modules in thermal runaway. This thermally conductive structure can also increase the mechanical strength of the battery pack, improve its resistance to vibration, impact, and compression, and increase the mechanical reliability of the battery pack.

[0005] According to an embodiment of the present invention, a heat-conducting structure is suitable for installation between two adjacent battery modules. The heat-conducting structure includes a heat-conducting structure body and heat-conducting adhesive. The heat-conducting structure body has two heat-conducting outer sidewalls that are opposite to each other. The two heat-conducting outer sidewalls are respectively disposed facing the two battery modules. The heat-conducting structure body forms a central receiving groove located between the two heat-conducting outer sidewalls. The heat-conducting outer sidewalls are provided with sidewall receiving grooves. The heat-conducting adhesive is filled in both the central receiving groove and the sidewall receiving grooves.

[0006] According to the embodiment of the present invention, a central receiving groove is provided between the two outer heat-conducting walls of the heat-conducting structure body. The outer heat-conducting walls are provided with side wall receiving grooves, and thermally conductive adhesive is provided in both the central receiving groove and the side wall receiving grooves. When the heat-conducting structure is located between two adjacent battery modules, the thermally conductive adhesive in the side wall receiving grooves contacts the battery modules. When the battery modules have high heat, the heat of one battery module can be transferred to the thermally conductive adhesive in the side wall receiving grooves, the thermally conductive adhesive in the central receiving grooves, and the heat-conducting structure body, and also transferred to the other battery module for heat dissipation. This achieves heat transfer and heat dissipation, avoids heat concentration, improves the thermal runaway performance of the battery modules, and is suitable for situations where the gap between adjacent battery modules is large. The thermally conductive adhesive has good consistency. At the same time, the heat-conducting structure can also increase the mechanical strength of the battery pack, improve the battery pack's resistance to vibration, impact, and extrusion, and increase the mechanical reliability of the battery pack.

[0007] According to the heat-conducting structure of this utility model embodiment, the bottom of the heat-conducting structure body is a closed base plate, and the bottoms of the central receiving groove and the side wall receiving groove both extend to the top of the base plate.

[0008] According to the thermal conductive structure of this utility model embodiment, the bottom of the base plate is provided with a connecting adhesive, and the thermal conductive structure body is adapted to be connected to the battery pack shell between adjacent battery modules through the connecting adhesive.

[0009] According to the heat-conducting structure of this utility model embodiment, both the sidewall receiving groove and the central receiving groove are provided in multiples, and the multiple central receiving grooves are spaced apart along the length direction of the heat-conducting structure body; the multiple sidewall receiving grooves extend vertically along the heat-conducting structure body, and the multiple sidewall receiving grooves are spaced apart along the length direction of the heat-conducting structure body, or the multiple sidewall receiving grooves extend laterally along the heat-conducting structure body and the multiple sidewall receiving grooves are spaced apart vertically along the heat-conducting structure body.

[0010] According to the heat-conducting structure of this utility model embodiment, the sidewall receiving groove can be configured as a curved S-shaped structure.

[0011] According to the embodiment of the present invention, when the multiple sidewall receiving grooves extend vertically along the body of the heat-conducting structure, each sidewall receiving groove is located outside two adjacent middle receiving grooves.

[0012] According to the embodiment of the present utility model, the heat-conducting structure body further includes an elastic interlayer located between the two heat-conducting outer walls. The cross-sectional structure of the elastic interlayer is curved, and the two sides of the elastic interlayer are partially connected to the corresponding two heat-conducting outer walls. The elastic interlayer and the heat-conducting outer walls form the central receiving groove.

[0013] According to the embodiment of the present utility model, the heat-conducting structure body includes a central structure and end structures located at both ends of the central structure along the length direction. The height of the two end structures along the vertical direction is lower than the height of the central structure along the vertical direction. The central structure is used to contact the battery module, and the end structures are used to contact the module frame of the battery pack.

[0014] According to the heat-conducting structure of the present invention, the depth of the sidewall receiving groove is at least 1 / 2 of the thickness of the heat-conducting outer sidewall.

[0015] This utility model embodiment also proposes a battery pack, including a battery pack shell, multiple battery modules and multiple heat-conducting structures as described above. An installation cavity is formed inside the battery pack shell, and the multiple battery modules are disposed in the installation cavity. Each heat-conducting structure is located between two adjacent battery modules in a first direction.

[0016] In practice, a heat-conducting structure is set between two adjacent battery modules. Through heat transfer between the battery modules, the thermal runaway performance of the battery modules is improved, and heat is transferred through the heat-conducting structure to dissipate heat. This suppresses the spread of thermal runaway of the battery modules and reduces the risk of combustion and explosion of the battery pack.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the battery pack structure according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the thermal conductive structure of this utility model located between two adjacent battery modules;

[0021] Figure 3 This is a schematic diagram of the thermally conductive structure in contact with a battery module according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the heat-conducting structure body according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of one embodiment of the heat-conducting structure of this utility model;

[0024] Figure 6This is a schematic diagram of another embodiment of the heat-conducting structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the S-shaped structure of the side wall receiving groove of this utility model;

[0026] Figure 8 This is a schematic diagram of the structure of the present invention, which has an elastic interlayer between two adjacent heat-conducting outer walls.

[0027] Figure label:

[0028] Battery pack 1000,

[0029] Mounting cavity 1001, heat-conducting structure 100, heat-conducting structure body 1, central receiving groove 11, heat-conducting outer wall 12, side wall receiving groove 121, bottom plate 13, heat-conducting adhesive 14, end structure 15, central structure 16, partition 17, connecting adhesive 18, battery module 2, battery pack shell 3, elastic interlayer 4, first side 41, first connecting position 411, second side 42, second connecting position 421, module frame 5. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The following is for reference. Figures 1-8 The thermally conductive structure 100 according to an embodiment of the present invention is applicable to situations where the gap between adjacent battery modules 2 is large. The thermally conductive adhesive 14 has good consistency. Heat is transferred between adjacent battery modules 2 through the thermally conductive structure 100 to achieve heat dissipation, thereby improving the thermal runaway performance of the battery modules 2. The thermally conductive structure 100 can also increase the mechanical strength of the battery pack 1000, improve the battery pack 1000's resistance to vibration, impact and extrusion, and increase the mechanical reliability of the battery pack 1000.

[0034] like Figure 1-8 As shown, a thermally conductive structure 100 according to an embodiment of the present invention is suitable for installation between two adjacent battery modules 2. The thermally conductive structure 100 includes: a thermally conductive structure body 1 and thermally conductive adhesive 14.

[0035] The thermally conductive structure body 1 has two thermally conductive outer sidewalls 12 that are opposite to each other. The two thermally conductive outer sidewalls 12 are respectively arranged facing the two battery modules 2. The thermally conductive structure body 1 forms a central receiving groove 11 located between the two thermally conductive outer sidewalls 12. The thermally conductive outer sidewalls 12 are provided with sidewall receiving grooves 121. Both the central receiving groove 11 and the sidewall receiving groove 121 are filled with thermally conductive adhesive 14.

[0036] In practice, the heat-conducting structure body 1 can be made of aluminum or other materials with good thermal conductivity. The heat-conducting structure body 1 can be integrally formed and manufactured using CMC (numerical control machining), aluminum extrusion, die casting, or other processing methods. The heat-conducting structure body 1 has two heat-conducting outer side walls 12. That is, when the heat-conducting structure 100 is installed between two adjacent battery modules 2, the two heat-conducting outer side walls 12 are in contact with the corresponding battery modules 2 respectively. The side wall receiving grooves 121 of the heat-conducting outer side walls 12 can be filled with thermally conductive adhesive 14. After the thermally conductive adhesive 14 solidifies, the thermally conductive adhesive 14 and the position of the heat-conducting outer side walls 12 without side wall receiving grooves 121 can contact the corresponding battery modules 2. At the same time, a central receiving groove 11 is provided between the two heat-conducting outer side walls 12, and the central receiving groove 11 is also filled with thermally conductive adhesive 14. Thus, when the heat of the battery modules 2 is too high, the heat can be transferred from one battery module 2 to the other battery module 2, achieving the effect of heat transfer and heat dissipation of the battery modules 2.

[0037] Furthermore, by setting the side wall receiving groove 121 and the central receiving groove 11, the problems of disordered flow and overflow when the thermally conductive adhesive 14 is not completely solidified can be avoided. In addition, the thermal conductivity between two adjacent battery modules 2 is improved, and the central receiving groove 11 can reduce the weight of the entire thermally conductive structure body 1, thus meeting the lightweight requirement of the battery pack 1000.

[0038] In addition, the heat-conducting structure body 1 can serve as a support structure between adjacent battery modules 2. That is, the heat-conducting structure body 1 can be connected between adjacent battery modules 2, and the height of the heat-conducting structure body 1 is at least the same as the height of the battery module 2, thereby improving the integrity between the heat-conducting structure 100 and the battery module 2. At the same time, the heat-conducting structure 100, located between two adjacent battery modules 2, can also increase the mechanical strength of the battery pack 1000, improve the battery pack 1000's resistance to vibration, impact and extrusion, and increase the mechanical reliability of the battery pack 1000.

[0039] Moreover, when installing the heat-conducting structure 100, the heat-conducting structure body 1 can be placed between two adjacent battery modules 2 first, and then the heat-conducting adhesive 14 can be filled into the central receiving groove 11 and the side wall receiving groove 121 respectively, so as to make reasonable use of the amount of heat-conducting adhesive 14 according to the actual situation and avoid waste of heat-conducting adhesive 14.

[0040] In some embodiments, the bottom of the heat-conducting structure body 1 is a closed base plate 13, and the bottoms of the central receiving groove 11 and the side wall receiving groove 121 both extend above the base plate 13.

[0041] In practice, the bottom of the thermal conductive structure body 1 is set as a closed structure. After the thermal conductive adhesive 14 is injected into the central receiving groove 11 and the side wall receiving groove 121, the thermal conductive adhesive 14 can be blocked by the bottom plate 13 which is closed at the bottom, thereby reducing the problem of overflow and disordered flow of the thermal conductive adhesive 14. At the same time, it can also improve the flatness of the bottom of the thermal conductive structure 100, thereby improving the integrity and stability of the thermal conductive structure 100 when it is connected between adjacent battery modules 2 and connected to the battery pack shell 3.

[0042] In other words, it is equivalent to the central receiving groove 11 and the side wall receiving groove 121 being non-through in the vertical direction. Therefore, the flatness of the bottom of the heat-conducting structure body 1 can be improved and the structural strength of the bottom can be increased. This ensures the structural strength of the heat-conducting structure 100 when it is installed between two adjacent battery modules 2, improves the mode of the battery pack 1000, and also improves the structural strength and impact resistance of the entire battery pack 1000.

[0043] In some embodiments, the bottom of the base plate 13 is provided with a connecting adhesive 18, and the thermally conductive structure body 1 is adapted to be connected to the battery pack shell 3 between adjacent battery modules 2 by the connecting adhesive 18.

[0044] In other words, a connecting adhesive 18 can be applied to the bottom of the base plate 13. Both the connecting adhesive 18 and the aforementioned thermally conductive adhesive 14 can be structural adhesives. Structural adhesives are adhesives with high strength, capable of withstanding large loads, and resistant to aging, fatigue, and corrosion. They are stable in performance within their expected lifespan and are suitable for bonding structural components that withstand strong forces. By setting the connecting adhesive 18 at the bottom of the base plate 13, the thermally conductive structure body 1 is placed between two adjacent battery modules 2. For example, the battery pack shell 3 can generally include a battery pack tray. The battery pack tray serves as the main structure supporting the battery modules 2. The bottom of the base plate 13 of the thermally conductive structure body 1 is connected to the battery pack tray through the connecting adhesive 18, thereby maintaining the stability and reliability of the connection of the thermally conductive structure 100 and facilitating the connection.

[0045] In some embodiments, there are multiple sidewall receiving grooves 121 and multiple central receiving grooves 11, with the multiple central receiving grooves 11 spaced apart along the length direction of the heat-conducting structure body 1; the multiple sidewall receiving grooves 121 extend vertically along the heat-conducting structure body 1, and the multiple sidewall receiving grooves 121 are spaced apart along the length direction of the heat-conducting structure body 1; or the multiple sidewall receiving grooves 121 extend laterally along the heat-conducting structure body 1, and the multiple sidewall receiving grooves 121 are spaced apart vertically along the heat-conducting structure body 1.

[0046] Reference Figure 4 As shown, multiple sidewall receiving grooves 121 and multiple central receiving grooves 11 are provided on the outer side of the two heat-conducting outer sidewalls 12. The multiple sidewall receiving grooves 121 on the two heat-conducting outer sidewalls 12 correspond one-to-one with each other. The multiple central receiving grooves 11 extend vertically. After filling the central receiving grooves 11 with thermally conductive adhesive 14, the thermally conductive adhesive 14 in the multiple central receiving grooves 11 can be filled evenly and kept flush at the top. At the same time, after filling the multiple sidewall receiving grooves 121 with thermally conductive adhesive 14, the thermally conductive adhesive 14 in the multiple sidewall receiving grooves 121 is evenly distributed. After filling the multiple sidewall receiving grooves 121 with thermally conductive adhesive 14, since the heat-conducting structure body 1 faces the battery module 2, the surface of the thermally conductive adhesive 14 in the multiple sidewall receiving grooves 121 can also be kept flush by the action of the battery module 2. This improves the convenience of installing the heat-conducting structure 100 between two adjacent battery modules 2, and at the same time ensures that the heat of the battery module 2 can be transferred more evenly.

[0047] Of course, such as Figure 6As shown, multiple sidewall receiving grooves 121 can also extend horizontally along the outer heat-conducting sidewall 12, and the multiple sidewall receiving grooves 121 can be vertically spaced. In this case, the heat of one battery module 2 can be transferred to the thermally conductive adhesive 14 in each sidewall receiving groove 121, and the heat of the thermally conductive adhesive 14 in each sidewall receiving groove 121 can be transferred to the thermally conductive adhesive 14 in multiple central receiving grooves 11 through the heat-conducting structure body 1. The heat of the thermally conductive adhesive 14 in multiple central receiving grooves 11 can be transferred to another battery module 2 through the heat-conducting structure body 1. The multiple central receiving grooves 11 are equally spaced, and the multiple sidewall receiving grooves 121 are equally spaced vertically, thereby improving the uniformity of heat conduction.

[0048] In some embodiments, the sidewall receiving groove 121 may be configured as a curved S-shaped structure along the extending direction.

[0049] like Figure 7 As shown, the S-shaped sidewall receiving groove 121 allows for the placement of more thermally conductive adhesive 14 within the same area of ​​the thermally conductive outer sidewall 12, thereby improving the thermal conductivity of the thermally conductive structure body 1. This enables the heat from the overheated battery module 2 to be transferred and dissipated more quickly, improving the safety of the battery pack 1000 and reducing the weight of the thermally conductive structure body 1.

[0050] In some embodiments, when the plurality of sidewall receiving grooves 121 extend vertically along the heat-conducting structure body 1, each sidewall receiving groove 121 is located outside the two adjacent central receiving grooves 11.

[0051] like Figure 4 As shown, a partition 17 is provided between adjacent middle receiving grooves 11, and the position of each partition 17 is directly opposite the middle of the side wall receiving groove 121 corresponding to the outer heat-conducting side wall 12. That is to say, after the heat of the battery module 2 is transferred to the thermally conductive adhesive 14 in one side wall receiving groove 121, it can be transferred to the thermally conductive structure body 1 through the thermally conductive adhesive 14 in the side wall receiving groove 121, and then transferred to the thermally conductive adhesive 14 in the middle receiving groove 11 through the thermally conductive structure body 1. The thermally conductive adhesive 14 in one side wall receiving groove 121 is close to the thermally conductive adhesive 14 in two middle receiving grooves 11, so that the heat of the thermally conductive adhesive 14 in one side wall receiving groove 121 can be transferred to the thermally conductive adhesive 14 in two middle receiving grooves 11 more efficiently, thereby improving the heat conduction efficiency.

[0052] Furthermore, each sidewall receiving groove 121 is located between two adjacent middle receiving grooves 11 on the heat-conducting outer sidewall 12, thereby improving the uniformity of heat conduction.

[0053] In some embodiments, refer to Figure 8As shown, the heat-conducting structure body 1 also includes an elastic interlayer 4 located between two heat-conducting outer walls 12. The cross-sectional structure of the elastic interlayer 4 is curved, and the two sides of the elastic interlayer 4 are partially connected to the corresponding two heat-conducting outer walls 12. A central receiving groove 11 is formed between the elastic interlayer 4 and the heat-conducting outer walls 12.

[0054] Specifically, the cross-sectional structure of the elastic interlayer 4 within the heat-conducting structure body 1 is a corrugated curved structure, which includes a first side 41 and a second side 42. The first side 41 faces the inner side of one heat-conducting outer wall 12, and the second side 42 faces the inner side of another heat-conducting outer wall 12. There are multiple first connection points 411 between the first side 41 of the elastic interlayer 4 and the corresponding heat-conducting outer wall 12. At the same time, there are also multiple second connection points 421 between the second side 42 of the elastic interlayer 4 and the corresponding heat-conducting outer wall 12. A central receiving groove 11 is formed between the adjacent first connection point 411 and the inner side of one heat-conducting outer wall 12 on the first side 41. Another central receiving groove 11 is formed between the adjacent second connection point 421 and the inner side of another heat-conducting outer wall 12 on the second side 42. In other words, even with the design of the elastic interlayer 4, heat can still be transferred through the side wall receiving groove 121 and the heat-conducting adhesive 14 in the central receiving groove 11.

[0055] Meanwhile, the elastic interlayer 4 is made of an elastic material, such as rubber or other elastic materials, and the heat-conducting structure body 1 can be made of aluminum or other conductive metal materials. When the heat-conducting structure 100 is placed between two adjacent battery modules 2, it can have a certain capacity for expansion and contraction to absorb installation tolerances between adjacent battery modules 2 and adapt to different module gaps. For example, if the width of the heat-conducting structure body 1 is slightly larger than the module gap between two adjacent battery modules 2, after placing the heat-conducting structure body 1 between the two adjacent battery modules 2, the two battery modules 2 will press against the two outer heat-conducting walls 12, thereby pressing the elastic interlayer 4. This allows the heat-conducting structure body 1 to be installed between the two adjacent battery modules 2. Therefore, when the module gap between adjacent battery modules 2 is within a set range, the heat-conducting structure 100 can be installed, thus improving the flexibility of the heat-conducting structure body 1.

[0056] In some embodiments, the thermally conductive structure body 1 includes a central structure 16 and end structures 15 located at both ends of the central structure 16 along its length. The height of the two end structures 15 in the vertical direction is lower than the height of the central structure 16 in the vertical direction. The central structure 16 is used to contact the battery module 2, and the end structures 15 are used to contact the module frame 5 of the battery pack 1000.

[0057] In practice, combined with Figure 2 and Figure 5 As shown, the battery pack housing 3 is provided with a module frame 5. In other words, the combined effect of the battery pack housing 3 and the module frame 5 can improve the strength and reliability of the battery pack 1000 structure. The module frame 5 encloses the space for installing the battery modules 2. Multiple battery modules 2 are installed in the space enclosed by the module frame 5. In other words, the module frame 5 can limit the battery modules 2 and has good structural strength.

[0058] The height of battery module 2 is higher than that of module frame 5. This achieves the goal of lightweighting the entire battery pack 1000 while ensuring the battery module 2 is positioned within the module frame 5 and has good structural strength. After the battery module 2 is placed within the module frame 5, a gap is left between adjacent battery modules 2. The heat-conducting structure body 1 is installed in this gap, with both ends connected to the module frame 5. Specifically, the middle structure 16 of the heat-conducting structure body 1 contacts the two adjacent battery modules 2, and the end structure 15 connects to the module frame 5. This ensures a good fit between the heat-conducting structure 100 and the module frame 5, achieving a lightweight effect.

[0059] In some embodiments, the depth of the sidewall receiving groove 121 is at least 1 / 2 of the thickness of the thermally conductive outer wall 12. In practice, the depth of the sidewall receiving groove 121 can be set to 1 / 2, 2 / 3, etc., of the thickness of the thermally conductive outer wall 12, so that more thermally conductive adhesive 14 can be filled in the sidewall receiving groove 121 of the thermally conductive outer wall 12. This improves the thermal conductivity of the thermally conductive structure 100 and makes the thermally conductive structure 100 lighter. For example, the heat of one battery module 2 can be transferred to the thermally conductive structure 100 and then to another battery module 2. Heat dissipation is also achieved during the heat transfer process.

[0060] It should be noted that the heat-conducting structure body 1 of this utility model embodiment can be assembled separately and glued by machine, which makes it easier to achieve automated operation of the production line.

[0061] This utility model embodiment also discloses a battery pack 1000, including a battery pack shell 3, a plurality of battery modules 2 and a plurality of the above-mentioned heat-conducting structures 100. An installation cavity 1001 is formed in the battery pack shell 3, the plurality of battery modules 2 are disposed in the installation cavity 1001, and each heat-conducting structure 100 is disposed between two adjacent battery modules 2 along a first direction.

[0062] Reference Figure 1As shown, if the battery pack housing 3 has two mounting cavities 1001, and each mounting cavity 1001 has multiple battery modules 2, and the multiple battery modules 2 are arranged in the first direction, then a heat-conducting structure 100 is set between adjacent battery modules 2. This is suitable for situations where the gap between adjacent battery modules 2 is large. The consistency of the filled thermally conductive adhesive 14 is good. Heat is transferred between adjacent battery modules 2 through the heat-conducting structure 100 to achieve heat dissipation, thereby improving the thermal runaway performance of the battery modules 2. The heat-conducting structure 100 can also increase the mechanical strength of the battery pack 1000 and improve the battery pack 1000's resistance to vibration, impact and extrusion, thereby increasing the mechanical reliability of the battery pack 1000.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermally conductive structure, characterized in that, A thermally conductive structure (100) is adapted to be installed between two adjacent battery modules (2), the thermally conductive structure (100) comprising: A heat-conducting structure body (1) has two heat-conducting outer sidewalls (12) that are opposite to each other. The two heat-conducting outer sidewalls (12) are respectively arranged facing the two battery modules (2). The heat-conducting structure body (1) forms a central receiving groove (11) located between the two heat-conducting outer sidewalls (12). The heat-conducting outer sidewalls (12) are provided with sidewall receiving grooves (121). Thermally conductive adhesive (14) is used to fill both the central receiving groove (11) and the side wall receiving groove (121).

2. The thermally conductive structure according to claim 1, characterized in that, The bottom of the heat-conducting structure body (1) is a closed base plate (13), and the bottoms of the central receiving groove (11) and the side wall receiving groove (121) both extend above the base plate (13).

3. The thermally conductive structure according to claim 2, characterized in that, The bottom of the base plate (13) is provided with a connecting adhesive (18), and the heat-conducting structure body (1) is adapted to be connected to the battery pack shell (3) between adjacent battery modules (2) by the connecting adhesive (18).

4. The thermally conductive structure according to claim 2, characterized in that, Both the sidewall receiving groove (121) and the central receiving groove (11) are provided in multiples, and the multiple central receiving grooves (11) are distributed at intervals along the length direction of the heat-conducting structure body (1); The plurality of sidewall receiving grooves (121) extend vertically along the heat-conducting structure body (1), and the plurality of sidewall receiving grooves (121) are spaced apart along the length direction of the heat-conducting structure body (1), or the plurality of sidewall receiving grooves (121) extend laterally along the heat-conducting structure body (1) and the plurality of sidewall receiving grooves (121) are spaced apart vertically along the heat-conducting structure body (1).

5. The thermally conductive structure according to claim 4, characterized in that, The sidewall receiving groove (121) can be configured as a curved S-shaped structure.

6. The thermally conductive structure according to claim 4, characterized in that, When all of the sidewall receiving grooves (121) extend vertically along the heat-conducting structure body (1), each of the sidewall receiving grooves (121) is located outside the two adjacent central receiving grooves (11).

7. The thermally conductive structure according to claim 1, characterized in that, The heat-conducting structure body (1) also includes an elastic interlayer (4) located between the two heat-conducting outer walls (12). The cross-section of the elastic interlayer (4) is curved, and the two sides of the elastic interlayer (4) are partially connected to the corresponding two heat-conducting outer walls (12). The elastic interlayer (4) and the heat-conducting outer walls (12) form the central receiving groove (11).

8. The thermally conductive structure according to claim 1, characterized in that, The heat-conducting structure body (1) includes a central structure (16) and end structures (15) located at both ends of the central structure (16) along its length. The height of the two end structures (15) in the vertical direction is lower than that of the central structure (16) in the vertical direction. The central structure (16) is used to contact the battery module (2), and the end structures (15) are used to contact the module frame (5) of the battery pack (1000).

9. The thermally conductive structure according to claim 1, characterized in that, The depth of the sidewall receiving groove (121) is at least 1 / 2 of the thickness of the heat-conducting outer sidewall (12).

10. A battery pack, characterized in that, The battery pack includes a battery pack housing (3), a plurality of battery modules (2) and a plurality of heat-conducting structures (100) as described in any one of claims 1-9. The battery pack housing (3) has an installation cavity (1001) formed therein. The plurality of battery modules (2) are disposed in the installation cavity (1001). Each heat-conducting structure (100) is located between two adjacent battery modules (2) in a first direction.

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