Battery pack and electric device

Abstract

The application provides a battery pack and an electric device. The battery pack comprises a box body, a box cover, a battery monomer assembly and a reinforcing assembly. The box body comprises a bottom wall, a partition beam and two first side walls. The partition beam is arranged between the two first side walls and connected with the bottom wall. The bottom wall connects the two first side walls. Each first side wall and the partition beam form a battery compartment. In the second direction, the end of the box body opposite to the bottom wall forms an opening. The box cover is arranged on the opening. The battery monomer assembly is arranged in the battery compartment. The reinforcing assembly comprises a first reinforcing piece. The first reinforcing piece comprises a first reinforcing part and a second reinforcing part. The first reinforcing part is arranged between the first side wall and the battery monomer assembly and connected with the first side wall. The second reinforcing part is arranged between the bottom wall and the battery monomer assembly and connected with the bottom wall. The second reinforcing part connects the first reinforcing part and the partition beam. Such a battery pack can reduce the risk of damage of the battery pack when subjected to external impact and improve the structural strength of the battery pack.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery pack and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In the development of battery technology, in addition to improving the performance of battery packs, the structural strength of battery packs is also an issue that cannot be ignored. Therefore, how to improve the structural strength of battery packs is a technical problem that urgently needs to be solved in battery technology. Utility Model Content

[0004] This application provides a battery pack and an electrical device that can improve the structural strength of the battery pack.

[0005] In a first aspect, this application provides a battery pack, including a housing, a cover, battery cell assemblies, and a reinforcing assembly. The housing includes a bottom wall, a partition beam, and two first side walls. The two first side walls are disposed opposite each other along a first direction. The partition beam is disposed between the two first side walls and connected to the bottom wall. The bottom wall connects the two first side walls. A battery compartment is formed between each first side wall and the partition beam. An opening is formed at one end of the housing opposite the bottom wall along a second direction, which is perpendicular to the first direction. The cover is disposed over the opening. The battery cell assemblies are disposed within the battery compartments. The reinforcing assembly is disposed within at least one battery compartment. The reinforcing assembly includes at least one first reinforcing member, which includes a first reinforcing portion and a second reinforcing portion. The first reinforcing portion is disposed between the first side wall and the battery cell assemblies and connected to the first side wall. The second reinforcing portion is disposed between the bottom wall and the battery cell assemblies and connected to the bottom wall. The second reinforcing portion connects the first reinforcing portion and the partition beam.

[0006] In the above technical solution, by placing the first reinforcing part between the first sidewall and the battery cell assembly and connecting it to the first sidewall, the first reinforcing part enhances the strength of the first sidewall. Furthermore, when an external force impacts the first sidewall, the first reinforcing part provides cushioning for the battery cell assembly, reducing the risk of direct damage from external impacts. Similarly, by placing the second reinforcing part between the bottom wall and the battery cell assembly and connecting it to the bottom wall, the second reinforcing part enhances the strength of the bottom wall. Moreover, when an external force impacts the bottom wall, the second reinforcing part provides cushioning for the battery cell assembly, reducing the risk of direct damage from external impacts. By connecting the first reinforcing part and the partition beam with the second reinforcing part, when the first sidewall is subjected to external impact, the force on the first sidewall can be transmitted to the partition beam through the first and second reinforcing parts, improving the impact resistance of the enclosure, reducing the risk of damage to the battery pack under external impacts, and enhancing the structural strength of the battery pack.

[0007] In some embodiments, the reinforcing component includes a plurality of first reinforcing members, which are spaced apart within the battery compartment along a third direction, with the first direction, second direction, and third direction being perpendicular to each other. By spaced apart multiple first reinforcing members along a third direction within the battery compartment, on the one hand, the multiple first reinforcing members can further enhance the structural strength of the housing and reduce the risk of housing damage; on the other hand, gaps can be generated between the spaced-apart multiple first reinforcing members, thereby reducing the use of first reinforcing members, which is beneficial to reducing the impact of the placement of the first reinforcing members on the volumetric energy density of the battery pack, and can also reduce the placement cost of the first reinforcing members.

[0008] In some embodiments, a filler is provided between the second reinforcing portions of two adjacent first reinforcing members along a third direction. By providing a filler between two adjacent second reinforcing portions, the filler can make the position between the two adjacent first reinforcing members more stable, and the filler can also support the battery cell assembly together with the second reinforcing portions, thereby improving the positional stability of the battery cell assembly.

[0009] In some embodiments, the reinforcing component further includes at least one connector that connects to a plurality of first reinforcing members. By connecting the plurality of first reinforcing members with the connector, the positions of the plurality of first reinforcing members are more stable, thereby making the internal structure of the battery pack more stable.

[0010] In some embodiments, the first reinforcing part is provided with a through hole, and the connector passes through the through hole of the first reinforcing part of the plurality of first reinforcing parts and is connected to the first reinforcing part. By providing the connector to pass through the through hole of the plurality of first reinforcing parts, the connection difficulty between the connector and the first reinforcing part is reduced, and the assembly cost of the connector and the first reinforcing part is reduced.

[0011] In some embodiments, the first reinforcing portion and / or the second reinforcing portion are provided with a weight-reduction structure. By providing a weight-reduction structure, the weight of the battery pack can be further reduced, which is beneficial to improving the volumetric energy density of the battery pack.

[0012] In some embodiments, the reinforcing assembly includes at least one second reinforcing member, which corresponds one-to-one with the first reinforcing member. One end of the second reinforcing member is connected to the first reinforcing portion of the first reinforcing member, and the other end is connected to the partition beam. Along the second direction, the second reinforcing member is located between the cover and the battery cell assembly. By providing the second reinforcing member to connect the first reinforcing portion and the partition beam, the external force received by the first reinforcing portion can be transmitted to the partition beam through the second reinforcing member, further improving the impact resistance of the battery pack and enhancing the structural strength of the battery pack.

[0013] In some embodiments, a wiring channel is provided inside the partition beam, and the battery pack also includes a wiring harness assembly electrically connected to the individual battery cells. At least a portion of the wiring harness assembly passes through the wiring channel. By providing at least a portion of the wiring harness assembly through the wiring channel, on the one hand, it helps to reduce the weight of the partition beam and increase the mass energy density of the battery pack; on the other hand, it provides space for the wiring harness assembly, improving the space utilization of the battery pack and providing more space for the individual battery cells, thereby helping to increase the volumetric energy density of the battery pack.

[0014] In some embodiments, the partition beam extends along the length of the battery pack, with the first direction, the second direction, and the length of the battery pack being perpendicular to each other. By setting the partition beam to extend along the length of the battery pack, it is easier to set up lifting points on the partition beam when the battery pack is suspended from the electrical equipment, thus reducing the difficulty of setting up the lifting points.

[0015] Secondly, this application provides an electrical device including the battery pack provided in any embodiment of the first aspect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 Exploded views of a battery pack provided in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of a battery pack provided in some embodiments of this application; Figure 3 An assembly diagram of the first reinforcing member and the partition wall provided for some embodiments of this application; Figure 4 An assembly diagram of the first reinforcing member, filler, and partition wall provided for some embodiments of this application; Figure 5 An assembly diagram of the first reinforcing member, connector, filler, and partition wall provided for some embodiments of this application; Figure 6 A schematic diagram of the structure of the first reinforcing member provided in some embodiments of this application; Figure 7 This is a schematic diagram of the structure of a battery pack provided in some embodiments of this application; Figure 8 This is a schematic diagram of the structure of a battery pack provided in some embodiments of this application; Figure 9 This is a schematic diagram of the structure of a battery pack provided in some other embodiments of this application.

[0018] Icons: 1-Box body; 11-Bottom wall; 12-Separation beam; 121-Wire passage; 13-First side wall; 2-Box cover; 3-Battery cell assembly; 4-Reinforcing assembly; 41-First reinforcing member; 411-First reinforcing part; 4111-Through hole; 412-Second reinforcing part; 413-Weight reduction structure; 42-Connector; 43-Second reinforcing member; 5-Filling member; 6-Wire harness assembly; 7-Lifting block; 10-Battery pack; 10a-Battery compartment; 10b-Opening; X-First direction; Z-Second direction; Y-Third direction. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0021] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0025] In this application, "multiple" means two or more (including two).

[0026] Please refer to Figures 1-2 , Figure 1 Exploded views of the battery pack 10 provided in some embodiments of this application; Figure 2This is a schematic diagram of the structure of a battery pack 10 provided in some embodiments of this application. This application provides a battery pack 10, including a housing 1, a cover 2, battery cell assemblies 3, and reinforcing assemblies 4. The housing 1 includes a bottom wall 11, a partition beam 12, and two first side walls 13. The two first side walls 13 are arranged opposite each other along a first direction X. The partition beam 12 is disposed between the two first side walls 13 and connected to the bottom wall 11. The bottom wall 11 connects the two first side walls 13. A battery compartment 10a is formed between each first side wall 13 and the partition beam 12. An opening 10b is formed at the end of the housing 1 opposite to the bottom wall 11 along a second direction Z. The second direction Z is perpendicular to the first direction X. The cover 2 is placed over the opening 10b. The battery cell assemblies 3 are disposed within the battery compartment 10a. The reinforcing component 4 is disposed within at least one battery compartment 10a. The reinforcing component 4 includes at least one first reinforcing member 41. The first reinforcing member 41 includes a first reinforcing part 411 and a second reinforcing part 412. The first reinforcing part 411 is disposed between the first side wall 13 and the battery cell assembly 3 and is connected to the first side wall 13. The second reinforcing part 412 is disposed between the bottom wall 11 and the battery cell assembly 3 and is connected to the bottom wall 11. The second reinforcing part 412 connects the first reinforcing part 411 and the partition beam 12.

[0027] The box body 1 has an open side, forming an opening 10b. The lid 2 can be a plate-like structure that covers the opening 10b of the box body 1; or the lid 2 can be a hollow structure with an opening 10b on one side, with the open side of the lid 2 covering the opening 10b of the box body 1. The opening 10b is located on the side of the box body 1 opposite to the bottom wall 11. Both side walls are adjacent to the opening 10b and are located on opposite sides of the box body 1 along the first direction X.

[0028] The partition beam 12 is connected to the bottom wall 11. The partition beam 12 and the bottom wall 11 can be integrally formed; for example, the partition beam 12 and the bottom wall 11 can be integrally cast. Alternatively, the partition beam 12 and the bottom wall 11 can be separately arranged and connected; for example, the partition beam 12 and the bottom wall 11 can be welded together. The partition beam 12 divides the internal space of the housing 1 into two battery compartments 10a. Both battery compartments 10a can accommodate individual battery cells 3.

[0029] There can be one or more battery cell assemblies 3. These battery cell assemblies 3 can be arranged along the length or width of the battery pack 10. Each battery cell assembly 3 includes multiple battery cells, which can be arranged along the length or width of the battery pack 10. The first direction X can be either the length or width of the battery pack 10; the second direction Z can be the height of the battery pack 10. The length of the battery pack 10 is greater than its width, and the height of the battery pack 10 is aligned with the vertical direction.

[0030] Both battery compartments 10a may be provided with reinforcing components 4; or only one battery compartment 10a may be provided with reinforcing components 4. The reinforcing component 4 may include only one first reinforcing member 41; or the reinforcing component 4 may include multiple first reinforcing members 41.

[0031] The first reinforcing part 411 can be fixedly connected to the first sidewall 13; for example, the first reinforcing part 411 can be welded to the first sidewall 13. Alternatively, the first reinforcing part 411 can be detachably connected to the first sidewall 13; for example, the first reinforcing part 411 can be pinned to the first sidewall 13. The second reinforcing part 412 can be fixedly connected to the bottom wall 11; for example, the second reinforcing part 412 can be welded to the bottom wall 11. Alternatively, the second reinforcing part 412 can be detachably connected to the bottom wall 11; for example, the second reinforcing part 412 can be snapped into the bottom wall 11. The second reinforcing part 412 and the first reinforcing part 411 can be integrally formed; for example, the second reinforcing part 412 and the first reinforcing part 411 can be integrally cast; or the second reinforcing part 412 and the first reinforcing part 411 can be separately arranged and connected; for example, the second reinforcing part 412 and the first reinforcing part 411 can be welded together. The second reinforcing part 412 can be fixedly connected to the partition beam 12; for example, the second reinforcing part 412 can be welded to the partition beam 12; or the second reinforcing part 412 can be connected to the partition beam 12 by fasteners; the fasteners can be bolts.

[0032] In this embodiment, by disposing a first reinforcing portion 411 between the first sidewall 13 and the battery cell assembly 3, and connecting it to the first sidewall 13, the first reinforcing portion 411 enhances the strength of the first sidewall 13. Furthermore, when an external force impacts the first sidewall 13, the first reinforcing portion 411 provides cushioning for the battery cell assembly 3, reducing the risk of damage caused by direct external impact. Similarly, by disposing a second reinforcing portion 412 between the bottom wall 11 and the battery cell assembly 3, and connecting it to the bottom wall 11, the second reinforcing portion 412 enhances the strength of the bottom wall 11. Furthermore, when an external force impacts the bottom wall 11, the second reinforcing portion 412 provides cushioning for the battery cell assembly 3, reducing the risk of damage caused by direct external impact. By setting a second reinforcing part 412 to connect the first reinforcing part 411 and the partition beam 12, when the first side wall 13 is subjected to external impact, the force on the first side wall 13 can be transmitted to the partition beam 12 through the first reinforcing part 411 and the second reinforcing part 412, thereby improving the impact resistance of the housing 1, reducing the risk of damage to the battery pack 10 when subjected to external impact, and improving the structural strength of the battery pack 10.

[0033] In some embodiments, please refer to Figure 3 , Figure 3This is a schematic diagram of the assembly of the first reinforcing member 41 and the partition wall provided in some embodiments of this application. The reinforcing assembly 4 includes a plurality of first reinforcing members 41, which are spaced apart in the battery compartment 10a along a third direction Y, and the first direction X, the second direction Z and the third direction Y are perpendicular to each other.

[0034] The number of reinforcing members can be two, three, four, five, or more. The first reinforcing members 41 are spaced apart along a third direction Y, and any two adjacent first reinforcing members 41 do not contact each other, so that multiple first reinforcing members 41 are spaced apart. The third direction Y can be the length direction of the battery pack 10 or the width direction of the battery pack 10.

[0035] In this embodiment, by arranging multiple first reinforcing members 41 at intervals along the third direction Y within the battery compartment 10a, on the one hand, the multiple first reinforcing members 41 can further enhance the structural strength of the housing 1 and reduce the risk of damage to the housing 1; on the other hand, gaps can be generated between the multiple first reinforcing members 41 arranged at intervals, thereby reducing the use of the first reinforcing members 41, which is beneficial to reducing the impact of the arrangement of the first reinforcing members 41 on the volumetric energy density of the battery pack 10, and can also reduce the installation cost of the first reinforcing members 41.

[0036] In some embodiments, please refer to Figure 4 , Figure 4 This is an assembly diagram of the first reinforcing member 41, the filler 5, and the partition wall provided in some embodiments of this application. Along the third direction Y, a filler 5 is disposed between the second reinforcing portions 412 of two adjacent first reinforcing members 41.

[0037] There is a gap between the second reinforcing portions 412 of two adjacent first reinforcing members 41. The filler 5 may be entirely located within the gap, or a portion of the filler 5 may be located within the gap while the other portion protrudes outside the gap. The filler 5 may fill the gap completely, or it may fill only a portion of the gap.

[0038] In this embodiment, by providing a filler 5 between two adjacent second reinforcing parts 412, the filler 5 can make the position between the two adjacent first reinforcing parts 41 more stable. The filler 5 can also support the battery cell assembly 3 together with the second reinforcing part 412, thereby improving the positional stability of the battery cell assembly 3.

[0039] In some embodiments, please refer to Figure 5 , Figure 5 This is an assembly diagram of the first reinforcing member 41, the connector 42, the filler 5, and the partition wall provided for some embodiments of this application. The reinforcing assembly 4 also includes at least one connector 42, which connects multiple first reinforcing members 41.

[0040] The number of connectors 42 can be one or more. In embodiments with multiple connectors 42, the multiple connectors 42 can be spaced apart along the second direction Z, and each connector 42 connects to multiple first reinforcing members 41. The connectors 42 can extend along the third direction Y, and the connectors 42 connect to multiple first reinforcing members 41 of the reinforcing assembly 4. The connectors 42 and the first reinforcing members 41 can be integrally formed; for example, the connectors 42 and multiple first reinforcing members 41 can be integrally cast; or the connectors 42 and the first reinforcing members 41 can be separately arranged and connected; for example, the connectors 42 and multiple first reinforcing members 41 can be welded together.

[0041] In this embodiment, by setting a connector 42 to connect multiple first reinforcing members 41, the positions of the multiple first reinforcing members 41 are more stable, making the internal structure of the battery pack 10 more stable.

[0042] In some embodiments, please continue to refer to Figure 5 The first reinforcing part 411 is provided with a through hole 4111, and the connector 42 passes through the through hole 4111 of the first reinforcing part 411 of the plurality of first reinforcing parts 41 and is connected to the first reinforcing part 411.

[0043] The through hole 4111 penetrates the first reinforcing portion 411 of the first reinforcing member 41 along a third direction Y. The first reinforcing portion 411 can be welded, bonded, screwed, etc. to the connecting member 42. In embodiments where there are multiple first reinforcing portions 411, each first reinforcing portion 411 is correspondingly disposed within one through hole 4111 of the first reinforcing portions 411 of multiple first reinforcing members 41.

[0044] In this embodiment, by providing the connector 42 through the through holes 4111 of the multiple first reinforcing parts 411, the connection difficulty between the connector 42 and the first reinforcing parts 411 is reduced, and the assembly cost of the connector 42 and the first reinforcing parts 411 is reduced.

[0045] In some embodiments, please refer to Figure 6 , Figure 6 This is a schematic diagram of the structure of the first reinforcing member 41 provided in some embodiments of this application. The first reinforcing member 411 is provided with a weight reduction structure 413.

[0046] The weight reduction structure 413 can be an internal flow channel of the first reinforcing part 411, a sink provided on the first reinforcing part 411, or a sealing cavity provided inside the first reinforcing part 411.

[0047] In some embodiments, the second reinforcing part 412 is provided with a weight-reducing structure 413. The weight-reducing structure 413 may be an internal flow channel of the second reinforcing part 412, a groove provided on the second reinforcing part 412, or a sealing cavity provided inside the second reinforcing part 412.

[0048] In some embodiments, both the first reinforcing part 411 and the second reinforcing part 412 are provided with a weight reduction structure 413.

[0049] In this embodiment, by setting the weight reduction structure 413, the weight of the battery pack 10 can be further reduced, which is beneficial to improving the volumetric energy density of the battery pack 10.

[0050] In some embodiments, please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of a battery pack 10 provided in some embodiments of this application. The reinforcing component 4 includes at least one second reinforcing member 43, which corresponds one-to-one with the first reinforcing member 41. One end of the second reinforcing member 43 is connected to the first reinforcing part 411 of the first reinforcing member 41, and the other end is connected to the partition beam 12. Along the second direction Z, the second reinforcing member 43 is located between the cover 2 and the battery cell assembly 3.

[0051] The second reinforcing member 43 can be fixedly connected to the first reinforcing part 411 of the first reinforcing member 41; for example, the second reinforcing member 43 can be welded to the first reinforcing part 411 of the first reinforcing member 41. Alternatively, the second reinforcing member 43 can be detachably connected to the first reinforcing part 411 of the first reinforcing member 41; for example, the second reinforcing member 43 can be connected to the first reinforcing part 411 of the first reinforcing member 41 by fasteners; wherein the fasteners can be bolts, locking pins, etc.

[0052] The second reinforcing member 43 can be fixedly connected to the partition beam 12; for example, the second reinforcing member 43 can be welded to the partition beam 12; or the second reinforcing member 43 can be detachably connected to the partition beam 12; for example, the second reinforcing member 43 can be snapped into the partition beam 12.

[0053] In this embodiment, by providing a second reinforcing member 43 to connect the first reinforcing part 411 and the partition beam 12, the external force received by the first reinforcing part 411 can be transmitted to the partition beam 12 through the second reinforcing member 43, which further improves the impact resistance of the battery pack 10 and enhances the structural strength of the battery pack 10.

[0054] In some embodiments, please refer to Figure 8 , Figure 8 This is a schematic diagram of the structure of a battery pack 10 provided in some embodiments of this application. A wiring channel 121 is provided inside the partition beam 12. The battery pack 10 also includes a wiring harness 6, which is electrically connected to the battery cell assembly 3. At least a portion of the wiring harness 6 passes through the wiring channel 121.

[0055] The wiring harness group 6 can be a copper busbar, wire, etc., through which the battery cell assembly 3 can input or output electrical energy. The wiring harness group 6 can be directly connected to the battery pack 10 to achieve electrical connection; alternatively, the wiring harness group 6 can be connected to the battery pack 10 through an intermediate component, such as a socket or a connector. The wiring harness group 6 can be entirely run through the wiring channel 121; alternatively, a portion can be run through the wiring channel 121, with the remaining portion located outside the partition beam 12.

[0056] In this embodiment, by setting at least a portion of the wiring harness 6 to pass through the wiring channel 121, on the one hand, it is beneficial to reduce the weight of the partition beam 12 and increase the mass energy density of the battery pack 10; on the other hand, the space provided for the wiring harness 6 improves the space utilization of the battery pack 10, which is beneficial to provide more space for the battery cell assembly 3, thereby improving the volumetric energy density of the battery pack 10.

[0057] In some embodiments, please refer to Figure 9 , Figure 9 This is a schematic diagram of the structure of the battery pack 10 provided in some other embodiments of this application. The partition beam 12 extends along the length direction of the battery pack 10, and the first direction X, the second direction Z and the length direction of the battery pack 10 are perpendicular to each other.

[0058] When the battery pack 10 is installed in electrical equipment such as vehicles, it is generally necessary to align the length of the battery pack 10 with the length of the electrical equipment to reduce the installation difficulty. Taking the battery pack 10 installed in a vehicle as an example, for larger battery packs 10, it is generally necessary to connect a lifting block 7 to the battery pack 10. The lifting block 7 mates with the corresponding area of ​​the vehicle to achieve the installation of the battery pack 10. Generally, the lifting block 7 needs to be installed on the partition beam 12 of the battery pack 10. However, the installation position of the lifting block 7 varies depending on the model of the battery pack 10. The partition beam 12 extends along the length of the battery pack 10, which facilitates the installation of the lifting block 7 at different positions along the length of the battery pack 10, reducing the installation difficulty of the lifting block 7.

[0059] In this embodiment, by setting the partition beam 12 to extend along the length of the battery pack 10, it is beneficial to set up the lifting points on the partition beam 12 when the battery pack 10 is suspended on the electrical equipment, thus reducing the difficulty of setting up the lifting points.

[0060] This application provides an electrical device including a battery pack 10 provided in any of the above embodiments. The battery pack 10 is used to provide electrical energy to the electrical device.

[0061] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0062] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery pack (10), characterized in that, include: The housing (1) includes a bottom wall (11), a partition beam (12) and two first side walls (13). The two first side walls (13) are arranged opposite each other along a first direction (X). The partition beam (12) is arranged between the two first side walls (13) and connected to the bottom wall (11). The bottom wall (11) connects the two first side walls (13). A battery compartment (10a) is formed between each first side wall (13) and the partition beam (12). Along a second direction (Z), an opening (10b) is formed at the end of the housing (1) opposite to the bottom wall (11). The second direction (Z) is perpendicular to the first direction (X). Box lid (2) is provided over the opening (10b); A battery cell assembly (3) is disposed within the battery compartment (10a); A reinforcing component (4) is disposed within at least one of the battery compartments (10a). The reinforcing component (4) includes at least one first reinforcing member (41). The first reinforcing member (41) includes a first reinforcing part (411) and a second reinforcing part (412). The first reinforcing part (411) is disposed between the first sidewall (13) and the battery cell assembly (3) and is connected to the first sidewall (13). The second reinforcing part (412) is disposed between the bottom wall (11) and the battery cell assembly (3) and is connected to the bottom wall (11). The second reinforcing part (412) connects the first reinforcing part (411) and the partition beam (12).

2. The battery pack (10) as described in claim 1, characterized in that, The reinforcing component (4) includes a plurality of first reinforcing members (41), which are spaced apart in the battery compartment (10a) along a third direction (Y), and the first direction (X), the second direction (Z) and the third direction (Y) are perpendicular to each other.

3. The battery pack (10) as described in claim 2, characterized in that, Along the third direction (Y), a filler (5) is provided between the second reinforcing portions (412) of two adjacent first reinforcing members (41).

4. The battery pack (10) as described in claim 2, characterized in that, The reinforcing component (4) further includes at least one connector (42) that connects to a plurality of the first reinforcing components (41).

5. The battery pack (10) as described in claim 4, characterized in that, The first reinforcing part (411) is provided with a through hole (4111), and the connecting member (42) passes through the through hole (4111) of the first reinforcing part (411) of the plurality of first reinforcing members (41) and is connected to the first reinforcing part (411).

6. The battery pack (10) as described in any one of claims 1-5, characterized in that, The first reinforcing part (411) and / or the second reinforcing part (412) are provided with a weight reduction structure (413).

7. The battery pack (10) as described in any one of claims 1-5, characterized in that, The reinforcing component (4) includes at least one second reinforcing member (43), which corresponds one-to-one with the first reinforcing member (41). One end of the second reinforcing member (43) is connected to the first reinforcing part (411) of the first reinforcing member (41), and the other end is connected to the partition beam (12). Along the second direction (Z), the second reinforcing member (43) is located between the box cover (2) and the battery cell assembly (3).

8. The battery pack (10) as described in any one of claims 1-5, characterized in that, The partition beam (12) has a wire channel (121) inside. The battery pack (10) also includes a wire harness group (6). The wire harness group (6) is electrically connected to the battery cell assembly (3). At least a portion of the wire harness group (6) is inserted into the wire channel (121).

9. The battery pack (10) as described in any one of claims 1-5, characterized in that, The separator beam (12) extends along the length direction of the battery pack (10), and the first direction (X), the second direction (Z) and the length direction of the battery pack (10) are perpendicular to each other.

10. An electrical appliance, characterized in that, Includes the battery pack (10) as described in any one of claims 1-9.

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