Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment. The battery pack comprises a shell, a battery module, a radiator and a first heat conduction piece, the shell is provided with a containing space and a first opening communicated with the containing space. The battery module is arranged in the containing space, the radiator is arranged in the first opening and detachably connected with the shell, and the first heat conduction piece is connected between the radiator and the battery module in an abutting mode. The battery pack and the electric equipment have better heat dissipation performance, the battery module can be conveniently mounted in the shell, direct contact extrusion between the battery module and the shell is reduced, and the battery module can be effectively protected.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack and electrical equipment. Background Art

[0002] Power equipment such as automobiles, ships, and drones typically use battery packs as their power source. A battery typically consists of a housing and at least one battery module, which is housed and secured within the housing. To increase voltage or current, battery modules often utilize multiple cells connected in series or parallel. However, these multi-cell battery modules are not only difficult to secure within the housing, but also generate heat during use, which can easily lead to heat concentration. Utility Model Content

[0003] The purpose of this application is to provide a battery pack and electrical equipment, aiming to improve the heat dissipation of the battery module.

[0004] According to a first aspect of the present application, a battery pack is provided, comprising a housing, a battery module, a heat sink, and a first heat conductor. The housing has a storage space and a first opening communicating with the storage space. The battery module is disposed in the storage space, the heat sink is disposed in the first opening and is detachably connected to the housing, and the first heat conductor abuts between the heat sink and the battery module.

[0005] In the above technical solution, the first heat conductor can be set on the battery module at the first opening, and the heat sink can be connected to the shell at the first opening. At this time, the first heat conductor can be abutted between the heat sink and the battery module, thereby forming a solid-state heat conduction channel from the battery module to the first heat conductor and the heat sink, which facilitates the heat of the battery module to be directly discharged outward through the heat sink. The first heat conductor abuts and compresses between the battery module and the shell and / or the heat sink, so that the battery module and the shell and / or the heat sink form an interference fit, thereby improving the installation stability of the heat sink in the shell; the isolation effect of the first heat conductor can reduce direct contact and extrusion between the battery module and the shell, and can effectively protect the battery module.

[0006] In one or more / any one of the above optional embodiments, the battery module includes a plurality of first battery cells, and the battery pack includes a second heat conductive member, the second heat conductive member being connected to at least one of the first battery cells, and the second heat conductive member being connected to the first heat conductive member, so as to facilitate conduction of heat generated by each of the first battery cells to the first heat conductive member.

[0007] In one or more / any of the above optional embodiments, each first battery cell includes a battery cell body and an electrode terminal extending therefrom, and the second thermally conductive member is connected around the outside of at least one of the battery cell bodies. Heat from multiple surfaces of the battery cell body can be transferred to the second thermally conductive member, thereby increasing the contact area and improving heat dissipation efficiency.

[0008] In one or more / any of the above optional embodiments, the battery pack includes a seal disposed around the first opening and abutting between the heat sink and the housing, thereby reducing the ingress of external impurities such as moisture and dust into the accommodation space and improving the sealing performance of the housing.

[0009] In one or more / any of the above optional embodiments, the heat sink is provided with a first fixing hole extending therethrough, and the housing is provided with a second fixing hole. The battery pack includes a first fastener, which is sequentially inserted through the first fixing hole and the second fixing hole, securing the heat sink to the housing. The heat sink and the housing can be secured outside the housing, providing more installation space.

[0010] In one or more / any of the above optional embodiments, the first heat conducting member is configured to be disposed in the accommodation space through the first opening. During assembly, the battery module is first disposed in the accommodation space, the first heat conducting member is then bonded to the battery module through the first opening, and the heat sink is finally connected to the housing at the first opening, which facilitates assembly of the first heat conducting member.

[0011] In one or more / any one of the above optional embodiments, the shell includes a first side wall and a second side wall arranged opposite to each other along the second direction, the first opening is provided on the first side wall, the second direction is perpendicular to the first direction and along the second direction, the projection of the first heat conductor is located within the projection of the first opening, which not only facilitates the interference fit installation of the battery module and the shell and / or radiator, but also improves the heat dissipation efficiency.

[0012] In one or more / any of the above optional embodiments, the plurality of first battery cells are arranged along a first direction, the housing includes a first sidewall and a second sidewall arranged opposite each other along a second direction, the first opening is provided in the first sidewall, and the second direction is perpendicular to the first direction. Along the second direction, a portion of the first thermal conductor is located between the first sidewall and the battery cell body. The first thermal conductor can conduct heat generated by the battery cell body to the first sidewall, and the heat can be directly discharged outward through the first sidewall.

[0013] In one or more / any of the above optional embodiments, the first heat conducting member comprises graphite foam. Graphite foam has excellent thermal conductivity and buffering properties, which can reduce the impact between the battery module and the housing and / or the heat sink, thereby improving the heat dissipation performance of the battery pack.

[0014] According to a second aspect of the present application, there is provided an electrical device comprising a battery pack according to any one of the embodiments of the first aspect.

[0015] Additional aspects and advantages of the embodiments of the present application will be described, shown, or explained in part in the following description through implementation of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the dimensions in the drawings do not constitute proportional limitations.

[0017] Figure 1 A schematic structural diagram of a battery pack provided in one embodiment of the present application is shown;

[0018] Figure 2 shows an exploded schematic diagram of a battery pack provided in one embodiment of the present application;

[0019] Figure 3 A partial structural schematic diagram of a battery pack provided in one embodiment of the present application is shown;

[0020] Figure 4 A schematic structural diagram of a radiator provided in one embodiment of the present application is shown;

[0021] Figure 5 A schematic diagram showing the connection between the first battery cell and the second heat conducting member provided in one embodiment of the present application is shown;

[0022] Figure 6 A schematic structural diagram of a housing provided in one embodiment of the present application is shown;

[0023] Figure 7 A schematic diagram of a heat sink and a housing provided in one embodiment of the present application is shown;

[0024] Figure 8 A schematic structural diagram of a radiator provided in one embodiment of the present application is shown;

[0025] Figure 9 A partial structural schematic diagram of a circuit board provided in one embodiment of the present application is shown.

[0026] Description of reference numerals:

[0027] 1000, battery pack;

[0028] 10. Housing; 11. First opening; 12. Accommodation space; 13. Bottom wall; 14. Peripheral wall; 141. First side wall; 142. Second side wall; 143. Third side wall; 144. Fourth side wall; 15. Second opening; 16. Second fixing hole; 17. Protrusion;

[0029] 20. Battery module; 21. First battery cell; 211. Battery cell body; 212. Electrode terminal; 22. Busbar; 23. Isolator;

[0030] 30. Radiator; 31. Base plate; 32. Fin; 33. Extension; 34. First fixing hole; 35. First slot;

[0031] 40. a first heat conducting member;

[0032] 50. A second heat conducting member;

[0033] 60. First buffer member;

[0034] 70. Second buffer member;

[0035] 80. The third buffer member;

[0036] 90. First fastener;

[0037] 100. Seals;

[0038] 110. Battery management system; 111. Circuit board; 112. Wire; 113. Terminal; 114. Pin;

[0039] 120, top wall; 121, top radiator;

[0040] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0042] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0043] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0044] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0045] The technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0046] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 The structure of a battery pack 1000 provided in one embodiment of the present application and an exploded view of the battery pack 1000 are shown. The battery pack 1000 includes a housing 10 and a battery module 20. The housing 10 has a receiving space 12, and the battery module 20 is disposed in the receiving space 12. For example, the housing 10 includes a bottom wall 13 and a peripheral wall 14 connected to the bottom wall 13. The bottom wall 13 and the peripheral wall 14 together define the receiving space 12. A first opening 11 can be provided in the peripheral wall 14, and a heat sink 30 is disposed at the first opening 11 of the housing 10. The housing 10 has a second opening 15 communicating with the receiving space 12. The second opening 15 is disposed opposite the bottom wall 13 along a third direction Z. The battery module 20 can be placed into the receiving space 12 through the second opening 15, facilitating installation of the battery module 20 into the housing.

[0047] In some embodiments, the housing 10 may be made of aluminum alloy, stainless steel, carbon fiber composite material, or plastic. For example, aluminum alloy is used as an example. Aluminum alloy has high strength, light weight, and good thermal conductivity, which facilitates the conduction of heat generated by the battery module 20.

[0048] Optionally, when observed along the third direction Z, the size of the second opening 15 is basically consistent with the accommodating space 12. During assembly, the battery module 20 can be directly placed in the accommodating space 12 of the shell 10 through the second opening 15 and along the peripheral wall 14. The size of the second opening 15 can be adapted according to the size of the battery module 20 to improve the space utilization of the shell 10.

[0049] In some embodiments, the battery pack 1000 includes a heat sink 30 and a first heat conducting member 40 . The heat sink 30 is disposed in the first opening 11 , and the first heat conducting member 40 is abutted between the heat sink 30 and the battery module 20 .

[0050] In some embodiments, please refer to Figure 2 and Figure 3The battery module 20 includes a plurality of first battery cells 21, and the plurality of first battery cells 21 are arranged in the accommodating space 12. The plurality of first battery cells 21 are arranged along the first direction X. The plurality of first battery cells 21 are connected in series or in parallel. For example, the plurality of first battery cells 21 are connected in series or in parallel through current collecting components such as a bus bar 22 or a current collecting plate (not shown in the figure) to increase the voltage or current of the battery module 20. The number of battery modules 20 may be one, two or more. When there are multiple battery modules 20, after the multiple battery modules 20 are installed in the shell, an isolation member 23 may be provided between two adjacent battery modules 20 for separation.

[0051] In some embodiments, please refer to Figure 1 、 Figure 2 as well as Figure 4 The radiator 30 is disposed at the first opening 11 of the housing 10 , and the radiator 30 can cover the first opening 11 to reduce external impurities such as moisture or dust from entering the accommodating space 12 .

[0052] In some embodiments, the heat sink 30 includes a substrate 31 and a plurality of fins 32. The substrate 31 is connected to the shell 10 and covers the first opening 11. The plurality of fins 32 are arranged on the surface of the substrate 31 facing away from the accommodating space 12. Two adjacent fins 32 are arranged at intervals. The heat in the accommodating space 12 can be conducted to the fins 32 through the substrate 31. The arrangement of multiple fins 32 can increase the contact area with the outside air and improve the heat dissipation efficiency.

[0053] The heat sink 30 can directly contact and conduct heat to the battery module 20, or indirectly contact and conduct heat to the battery module 20 through an intermediate heat conducting medium. In the embodiment of the present application, the first heat conducting member 40 can serve as an intermediate medium to conduct heat from the battery module 20 to the heat sink 30.

[0054] Please refer to Figure 2 and Figure 3 The first heat conducting member 40 abuts between the heat sink 30 and the battery module 20. Part of the first heat conducting member 40 is located between the heat sink 30 and the battery module 20. The first heat conducting member 40 abuts the heat sink 30 and the battery module 20. The first heat conducting member 40 fills the gap between the heat sink 30 and the battery module 20, increasing the contact area and thereby improving heat dissipation efficiency.

[0055] In some embodiments, the first heat conducting member 40 comprises graphite foam, which can be formed by adding adhesives, flame retardants, etc. to natural graphite or artificial graphite and performing a foaming process. In other embodiments, the first heat conducting member 40 includes, but is not limited to, silicone rubber, polyurethane, metal foam, ceramic foam, etc.

[0056] In some embodiments, the first thermal conductor 40 is configured to be positioned within the accommodation space 12 through the first opening 11. During assembly, the battery module 20 is first positioned within the accommodation space 12, and then the first thermal conductor 40 is bonded to the battery module 20 through the first opening 11. Finally, the heat sink 30 is connected to the housing 10 at the first opening 11, which facilitates assembly of the first thermal conductor 40. The separate steps of assembling the battery module 20 within the accommodation space 12 and assembling the first thermal conductor 40 can reduce the gap between the battery module 20 and the housing 10, further reducing the size of the battery pack 1000.

[0057] The first heat conducting member 40 is in contact between the heat sink 30 and the battery module 20 , forming a heat conduction channel from the battery module 20 to the first heat conducting member 40 to the heat sink 30 , thereby facilitating the heat of the battery module 20 to be directly discharged outward through the heat sink 30 .

[0058] In some embodiments, the first heat conducting member 40 is in a compressed state, the first heat conducting member 40 is in abutment connection with the battery module 20 , and the first heat conducting member 40 is in abutment connection with the heat sink 30 , thereby reducing the heat transfer path.

[0059] In some embodiments, the battery pack 1000 includes a second heat conducting member 50, see Figure 3 and Figure 5 , the second heat-conducting member 50 is connected to at least one of the first battery cells 21, and the second heat-conducting member 50 is connected to the first heat-conducting member 40. Each second heat-conducting member 50 is respectively connected to at least one first battery cell 21, so as to facilitate the conduction of heat generated by each first battery cell 21 to the first heat-conducting member 40. Optionally, the material of the second heat-conducting member 50 can also be selected to be similar to that of the first heat-conducting member 40, such as the above-mentioned silicone rubber, polyurethane, metal foam, ceramic foam, or graphite foam. Optionally, the second heat-conducting member 50 includes an aluminum sheet.

[0060] In some embodiments, please refer to Figure 5 Each first battery cell 21 includes a battery cell body 211 and an electrode terminal 212 extending from the battery cell body 211. The interior of the battery cell body 211 is a place where electrochemical reactions occur. When the first battery cell 21 is in use, the battery cell body 211 generates heat. The electrode terminal 212 can lead out the positive and negative poles of the first battery cell 21. It is a channel for the current inside the first battery cell 21 to be led out, and can guide the current inside the first battery cell 21 to the external circuit. The second heat conductor 50 is connected to the outside of at least one battery cell body 211. The heat from multiple surfaces of the battery cell body 211 can be conducted to the second heat conductor 50, which increases the contact area and improves the heat dissipation efficiency.

[0061] The second thermally conductive member 50 surrounds and is connected to the outside of at least one battery cell body 211. The second thermally conductive member 50 can surround one, two, three, or more battery cells. When the second thermally conductive member 50 surrounds multiple first battery cells 21, the multiple first battery cells 21 can be combined into a single unit, thereby improving the integrity of the battery module 20 and thereby enhancing the installation stability of the battery module 20.

[0062] In some embodiments, please refer to Figure 2 、 Figure 3 as well as Figure 6 The peripheral wall 14 includes a first side wall 141, a second side wall 142, a third side wall 143, and a fourth side wall 144. The first side wall 141 and the second side wall 142 are arranged opposite each other along the second direction Y. The third side wall 143 and the fourth side wall 144 are connected between the first side wall 141 and the second side wall 142. The third side wall 143 and the fourth side wall 144 are arranged opposite each other along the first direction X. The first side wall 141, the second side wall 142, the third side wall 143, and the fourth side wall 144 are all connected to the bottom wall 13. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0063] In some embodiments, the plurality of first battery cells 21 are arranged along the first direction X. Along the second direction Y, a portion of the first heat conducting member 40 is located between the first side wall 141 and the battery cell body 211 . When the first battery cells 21 expand along the first direction X, the impact on the first heat conducting member 40 can be reduced, which is conducive to fixing the first heat conducting member 40 .

[0064] In some embodiments, please refer to Figure 2 and Figure 3 The battery pack 1000 includes a first buffer member 60 and a second buffer member 70. The first buffer member 60 can be disposed between the third side wall 143 and the battery module 20 to transfer heat from the battery module 20 to the third side wall 143. The third side wall 143 can also serve as a buffer to absorb expansion of the first battery cell 21 along the thickness direction. The second buffer member 70 can be disposed between the battery module 20 and the fourth side wall 144 to transfer heat from the battery module 20 to the fourth side wall 144 and absorb expansion of the first battery cell 21.

[0065] In some embodiments, the battery pack 1000 includes a third buffer member 80, which can be positioned between the bottom wall 13 and the battery module 20. During installation, the third buffer member 80 can first be bonded to the bottom wall 13 within the accommodating space 12. When the battery module 20 is placed within the accommodating space 12, the third buffer member 80 also serves as a buffer, supporting the battery module 20, reducing the impact of the battery module 20 on the bottom wall 13, and conducting heat from the battery module 20 to the bottom wall 13. The first buffer member 60, the second buffer member 70, and the third buffer member 80 can all be made of silicone rubber, polyurethane, metal foam, ceramic foam, or graphite foam. This not only facilitates the installation of the battery pack 1000 into the housing, facilitating the interference fit between the battery module 20 and the housing 10, but also improves heat dissipation efficiency.

[0066] In addition, the second side wall 142 can also be configured similarly to the first side wall 141 . The second side wall 142 can be provided with a third opening (not shown in the figure). A heat sink 30 is provided at the third opening to form convection heat dissipation on both sides, thereby improving the heat dissipation efficiency of the battery pack 1000 .

[0067] In some embodiments, along the second direction Y, the projection of the first heat conducting member 40 is located within the projection of the first opening 11. Along the second direction Y, the outer dimensions of the first heat conducting member 40 are smaller than the outer dimensions of the first opening 11. After the battery module 20 is installed in the housing, the first heat conducting member 40 can be directly connected to the battery module 20 at the first opening 11, and then the heat sink 30 can be connected to the housing 10 so that the first heat conducting member 40 abuts between the heat sink 30 and the battery module 20. This simple and convenient installation not only facilitates interference fit installation of the battery module 20 with the housing 10 and / or the heat sink 30, but also improves heat dissipation efficiency.

[0068] In some embodiments, please refer to Figure 2 and Figure 4 The surface of the substrate 31 of the heat sink 30 facing the accommodating space 12 has an extension 33. The substrate 31 can abut against the outer surface of the shell 10. The extension 33 is at least partially disposed in the accommodating space 12. After the heat sink 30 is installed, the extension 33 can squeeze the first heat conductor 40, thereby placing the first heat conductor 40 in a compressed state. The first heat conductor 40 squeezes the battery module 20, which can strengthen the fixation of the battery module 20 in the shell 10, and the first heat conductor 40 can fully fill the installation gap between the heat sink 30 and the battery module 20, thereby improving the heat dissipation efficiency; at the same time, the first heat conductor 40 can act as a buffer to reduce the direct extrusion impact of the heat sink 30 or the shell 10 on the battery module 20; and the side installation of the heat sink 30 and the first heat conductor 40 outside the shell 10 can achieve interference fixation of the battery module 20 in the shell 10, so as to facilitate the installation of the battery module 20 into the shell.

[0069] In some embodiments, the heat sink 30 is detachably connected to the housing 10 , and the detachable connection includes but is not limited to a screw connection, a snap connection, or a pin connection.

[0070] In some embodiments, please refer to Figure 1 and Figure 7 The heat sink 30 is provided with a first fixing hole 34 extending therethrough, and the housing 10 is provided with a second fixing hole 16. The battery pack 1000 includes a first fastener 90, which is sequentially inserted through the first fixing hole 34 and the second fixing hole 16 to secure the heat sink 30 and the housing 10. The aforementioned sequential direction is from the outside of the housing 10 to the inside of the housing 10. Operating the first fastener 90 from the outside of the housing 10 provides more space for assembly.

[0071] Taking screw connection as an example, the first fastener 90 is a screw, and correspondingly, the first fixing hole 34 and the second fixing hole 16 are both threaded holes. During installation, the first thermal conductor 40 is first attached to the battery module 20 through the first opening 11, and then the heat sink 30 is fastened to the housing 10 using the first fastener 90. The tighter the first fastener 90 is fastened to the heat sink 30 and the housing 10, the greater the pressure exerted by the heat sink 30 on the first thermal conductor 40. The pressure exerted by the heat sink 30 on the first thermal conductor 40 can be adjusted based on the tightening of the first fastener 90 to fill the gap between the heat sink 30 and the battery module 20.

[0072] Please refer to Figure 7 In some embodiments, the battery pack 1000 includes a seal 100 disposed around the first opening 11 and abutting between the heat sink 30 and the housing 10. The provision of the seal 100 can reduce the entry of external impurities such as moisture and dust into the accommodation space 12, thereby improving the sealing performance of the housing 10. The seal 100 can be made of rubber, a sealing gasket, or a sealant. For example, rubber includes nitrile rubber, silicone rubber, fluororubber, etc., which have excellent elasticity and sealing properties.

[0073] Optional, please refer to Figure 7 and Figure 8 The heat sink 30 defines a first groove 35, which faces the first opening 11. The outer surface of the housing 10 includes a protrusion 17, which surrounds the first opening 11. The protrusion 17 fits in the first groove 35; for example, the protrusion 17 can be at least partially received within the first groove 35. The seal 100 can be disposed in the first groove 35. When the heat sink 30 is connected to the housing 10, the protrusion 17 can directly enter the first groove 35 and abut against the seal 100, thereby improving not only the installation stability of the seal 100 but also the sealing performance of the housing 10.

[0074] In some other embodiments, the positions of the first groove 35 and the protrusion 17 can also be interchanged, that is, the first groove 35 is provided on the outer surface of the housing 10 and the first groove 35 is provided around the first opening 11 , and the protrusion 17 is provided on the heat sink 30 .

[0075] Please refer to Figure 2 and Figure 9 The battery pack 1000 includes a battery management system 110. The battery management system 110 monitors the battery's voltage, current, temperature and other parameters in real time to understand the battery's working status, ensure the balance of power among the battery cells in the battery pack 1000, extend the battery life, and optimize the discharge process according to the battery status and load requirements to improve energy utilization efficiency.

[0076] The battery management system 110 is disposed in the accommodation space 12. The battery management system 110 includes a circuit board 111. The circuit board 111 can be electrically connected to the battery module 20 via a wire 112. Optionally, a terminal 113 is provided on the circuit board 111. One end of the wire 112 can be electrically connected to the terminal 113 by mechanical crimping or welding, which has low contact resistance, strong current capacity and low heat generation. The terminal 113 can be provided on the circuit board 111 in the form of a patch. In some other embodiments, a pin hole (not shown in the figure) can be provided on the circuit board 111. The terminal 113 has a pin 114. The pin 114 is inserted into the pin hole to improve the stability of the connection between the terminal 113 and the circuit.

[0077] Please return to the photo Figure 1 and Figure 2 In some embodiments, the battery pack 1000 includes a top wall 120 connected to the housing 10. The size of the top wall 120 is equal to or larger than the size of the second opening 15. The top wall 120 covers the first opening 11 to seal the accommodating space 12 and reduce the entry of external moisture into the accommodating space 12. The battery management system 110 can be disposed between the top wall 120 and the battery module 20. The top wall 120 can be provided with heat dissipation holes (not shown) and a top heat sink 121. The heat dissipation holes communicate with the accommodating space 12. The top heat sink 121 can seal the heat dissipation holes and conduct some of the heat in the accommodating space 12 to the outside of the housing 10.

[0078] On the second aspect, the present application also provides an electrical device, including the aforementioned battery pack 1000. As a result, the electrical device has all the features and characteristics of the aforementioned battery pack 1000, which will not be repeated here. The electrical device can be implemented in various specific forms, for example, drones, electric vehicles, electric cleaning tools, energy storage products, electric vehicles, electric bicycles, electric navigation tools and other electronic products. In some scenarios, the electrical device includes but is not limited to: backup power supplies, electrodes, cars, motorcycles, power-assisted bicycles, bicycle power tools, large household batteries and lithium-ion capacitors, etc.

[0079] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A battery pack, characterized in that: include: a housing having an accommodating space and a first opening communicating with the accommodating space, the housing including a first side wall and a second side wall oppositely arranged along a second direction, the first opening being provided on the first side wall; A battery module is arranged in the accommodation space; a radiator, disposed at the first opening and detachably connected to the housing, the radiator covering the first opening, the radiator and the battery module being arranged along the second direction; The first heat conducting member is in contact with the heat sink and the battery module.

2. The battery pack according to claim 1, wherein: The battery module includes a plurality of first battery cells, and the battery pack includes a second heat conductive member connected to at least one of the first battery cells, and the second heat conductive member is connected to the first heat conductive member.

3. The battery pack according to claim 2, wherein: Each of the first battery cells includes a battery cell body and an electrode terminal extending from the battery cell body, and the second heat conductive member is connected around the outside of at least one of the battery cell bodies.

4. The battery pack according to claim 1, wherein: The battery pack includes a sealing member, which is disposed around the first opening and abuts between the heat sink and the housing.

5. The battery pack according to claim 1, wherein: The radiator is provided with a first fixing hole extending therethrough, and the housing is provided with a second fixing hole; The battery pack includes a first fastener, which is sequentially inserted into the first fixing hole and the second fixing hole, and fixes the radiator and the housing.

6. The battery pack according to any one of claims 1 to 5, characterized in that: The first heat conducting member is configured to be disposed in the accommodation space through the first opening.

7. The battery pack according to claim 6, characterized in that: Along the second direction, a projection of the first heat conducting member is located within a projection of the first opening.

8. The battery pack according to claim 6, wherein: The battery module includes a plurality of first battery cells arranged along a first direction, and the second direction is perpendicular to the first direction; Along the second direction, a portion of the first heat conducting member is located between the first side wall and the battery core body.

9. The battery pack according to claim 6, wherein: The first heat conducting member includes graphite foam.

10. An electrical device, characterized in that: A battery pack comprising the battery pack according to any one of claims 1 to 9.

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