Battery and electrical apparatus

Abstract

A battery (100) and an electrical apparatus, belonging to the technical field of batteries. The battery (100) comprises: a case body (10), battery cells (20), and a reinforcing member (30); the case body (10) comprises a first case body (101) and a second case body (102) which cover each other; the first case body (101) and / or the second case body (102) comprises a bottom wall (11) and a surrounding wall (12), the surrounding wall (12) being arranged around the bottom wall (11) and being connected to the bottom wall (11); the surrounding wall (12) comprises a plurality of side walls (121) which are connected end to end in sequence; the battery cells (20) are disposed in the case body (10); the reinforcing member (30) is disposed on the side of the surrounding wall (12) facing and / or facing away from the battery cells (20); at least one side wall (121) is provided with a functional component (40) and the reinforcing member (30), the reinforcing member (30) being at least connected to the surrounding wall (12) and being used for reinforcing the strength of the surrounding wall (12).

Description

Batteries and electrical devices

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202421416623.2, filed on June 20, 2024, by Contemporary Amperex Technology Co., Ltd., the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery technology, and more specifically, to a battery and an electrical device. Background Technology

[0004] In related technologies, the battery casing has a thin wall thickness and low compressive strength. Especially under front-to-back compression conditions, the high and low voltage connectors and heat exchange structures located at the front and rear of the battery are easily damaged, resulting in high voltage insulation failure or heat exchange medium leakage, which affects the safety of the battery system.

[0005] Summary of the Invention

[0006] This application provides a battery and an electrical device, wherein the battery casing has improved compressive strength, reducing the risk of high-voltage insulation failure or heat exchange medium leakage.

[0007] In a first aspect, embodiments of this application provide a battery, comprising: a housing, the housing including a first housing and a second housing that overlap each other, the first housing and / or the second housing including a bottom wall and a surrounding wall, the surrounding wall being disposed around and connected to the bottom wall, the surrounding wall including a plurality of side walls connected end to end in sequence; a battery cell, the battery cell being disposed within the housing; a reinforcing member, the reinforcing member being disposed on the side of the surrounding wall facing and / or away from the battery cell, at least one of the side walls being provided with a functional component and the reinforcing member, the reinforcing member being at least connected to the surrounding wall and used to strengthen the strength of the surrounding wall.

[0008] In the above technical solution, by providing a reinforcing member on at least one side of the enclosure wall facing the battery cell and the side away from the battery cell, the strength of the enclosure wall near the functional components is strengthened, which can improve the compressive strength of the enclosure, especially the compressive strength of the enclosure wall, thereby improving the impact resistance of the battery.

[0009] In some embodiments, the outer periphery of the first housing and / or the outer periphery of the second housing are provided with connecting protrusions extending away from the battery cell, and the reinforcing member includes a first reinforcing member provided on the side of the enclosure facing away from the battery cell.

[0010] In the above technical solution, the space occupied by the first reinforcing member and the connecting protrusion at least partially overlaps in the direction perpendicular to the wall thickness. Therefore, setting the first reinforcing member can not increase the overall space occupied by the battery, or only slightly increase the overall space occupied by the battery, making the overall battery structure compact and the envelope space small.

[0011] In some embodiments, the height of the first reinforcing member protruding from the enclosure wall is less than or equal to the height of the connecting protrusion protruding from the enclosure wall.

[0012] In the above technical solution, a first reinforcing member is set in the space on one side of the connecting protrusion in the vertical direction. In the front-back direction, the setting of the first reinforcing member will not cause the overall front-back dimension of the battery to increase, and the compressive strength of the box will be improved without affecting the volume utilization rate.

[0013] In some embodiments, the first reinforcement defines a first buffer cavity; or, the first reinforcement cooperates with the enclosure to define a first buffer cavity.

[0014] In the above technical solution, the collapse and deformation of the first buffer cavity can reduce the intensity of the external force that continues to be transmitted, thereby reducing the damage to the box body and components such as battery cells inside the box body, and improving the box body's resistance to compression.

[0015] In some embodiments, the first reinforcement includes a plurality of first plates and at least one second plate, the second plate being spaced apart from the enclosure wall by a certain distance, and at least two side edges of the second plate being connected to the enclosure wall through the first plate to define the first buffer cavity between the second plate and the enclosure wall.

[0016] In the above technical solution, the first reinforcing member has a simple structure, is easy to process and form, and takes into account both the requirements of improving the structural reinforcement effect and the buffering effect.

[0017] In some embodiments, there are multiple second plates, which are arranged circumferentially along the enclosure wall. The edges of the second plates on both sides of the enclosure wall in the circumferential direction are respectively connected to the enclosure wall through the first plate.

[0018] In the above technical solution, the first reinforcing member has a wider distribution range in the circumferential direction of the enclosure, and multiple first plates are arranged along the circumferential direction of the enclosure, and multiple second plates can be arranged along the circumferential direction of the enclosure, thereby enhancing the strength of the enclosure over a larger range and improving the overall compressive strength of the box.

[0019] In some embodiments, there are multiple second plates, which are arranged circumferentially along the enclosure wall, and the first plates on the adjacent sides of two adjacent second plates are connected by a connecting plate.

[0020] In the above technical solution, in the circumferential direction of the enclosure, two adjacent second plates are connected together by a first plate, a connecting plate and another first plate in sequence to form a whole. During the processing, the whole plate can be bent multiple times to obtain the connected first plate, second plate and connecting plate. The processing technology is simple and the production efficiency is high.

[0021] In some embodiments, a connecting plate is provided on the side edge of the first plate away from the second plate, and the connecting plate is in close contact with the surface of the enclosure.

[0022] In the above technical solution, the connected connecting plate, the first plate and the second plate generally form a Z-shaped structure, which can enhance strength and buffer the wall. Furthermore, by having the connecting plate adhere to the wall surface, the connection area can be increased to further enhance the strength of the wall.

[0023] In some embodiments, at least a portion of the functional components are located within the housing, and the reinforcement includes a second reinforcement disposed within the housing, on the same side wall, wherein the protrusion height of the second reinforcement is not less than the protrusion height of the functional components.

[0024] In the above technical solution, the second reinforcing member can reserve a certain safety space near the functional components inside the box. When the enclosure is deformed by compression, the second reinforcing member contacts other components inside the box before the functional components. After the second reinforcing member contacts other components and forms a certain buffer against the extrusion force, the functional components then contact other components inside the box. Alternatively, the deformation after buffering is small, so that the functional components do not come into contact with other components inside the box and are not compressed. This greatly improves the problem of functional components deforming and failing due to direct compression.

[0025] In some embodiments, the functional component includes a high-voltage connector disposed on the sidewall of the battery cell along a first direction. The high-voltage connector is connected to the battery cell via an electrical connector. The electrical connector includes a first connecting portion located on the side of the battery cell along the first direction and a second connecting portion located on the side of the battery cell along a second direction. The first direction intersects the second direction. The first connecting portion is connected to the high-voltage connector. The protrusion height of the second reinforcing member is not lower than the protrusion height of the first connecting portion.

[0026] In the above technical solution, when extrusion deformation occurs, the second reinforcing member can contact other components inside the housing before the first connecting part. The first connecting part and the connection between the first connecting part and the high-voltage connector do not directly bear the extrusion, which helps to improve the problem of deformation failure of the first connecting part and the connection.

[0027] In some embodiments, the second reinforcing member connects the bottom wall and the enclosure wall; and / or, the housing is provided with an expansion beam, and the second reinforcing member connects the expansion beam and the enclosure wall.

[0028] In the above technical solution, the second reinforcing member is less likely to come into contact with live components such as battery cells, high-voltage connectors, low-voltage connectors, and electrical connectors when it deforms, thus reducing the risk of short circuit.

[0029] In some embodiments, the second reinforcement defines a second buffer cavity, or the second reinforcement defines a second buffer cavity between itself and the housing.

[0030] In the above technical solution, the second buffer cavity can play a certain buffering role, thereby improving the compression resistance of the second reinforcing member, reducing the transmission of compressive force, and improving the protection effect on functional components. Furthermore, the second buffer cavity can reduce the weight of the second reinforcing member, thus reducing the overall weight of the battery while meeting the impact resistance requirements.

[0031] In some embodiments, the first housing and / or the second housing are integral sheet metal stamping parts.

[0032] Among the above technical solutions, the production efficiency of sheet metal integral stamping forming parts is high and the production cost is low.

[0033] In some embodiments, the enclosure is partially deformed toward or away from the battery cell to form reinforcing ribs.

[0034] In the above technical solution, the reinforcing ribs can improve the structural strength of the enclosure to a certain extent, so that the box body can meet the requirements of high production efficiency, low production cost and strength.

[0035] Secondly, embodiments of this application also provide an electrical device, including the battery described above, wherein the battery is used to provide electrical energy to the electrical device. Attached Figure Description

[0036] Figure 1 is a schematic diagram of the vehicle provided in an embodiment of this application;

[0037] Figure 2 is an exploded view of the battery provided in an embodiment of this application;

[0038] Figure 3 is a partial structural schematic diagram of a battery provided in some embodiments of this application;

[0039] Figure 4 is an enlarged structural diagram of point A circled in Figure 3;

[0040] Figure 5 is a partial structural schematic diagram of a battery provided in some other embodiments of this application;

[0041] Figure 6 is an enlarged structural diagram of point B circled in Figure 5;

[0042] Figure 7 is a partial structural schematic diagram of a battery provided in some embodiments of this application.

[0043] Reference numerals: Vehicle 1000; Battery 100; Controller 200; Motor 300; Housing 10; First Housing 101; Second Housing 102; Bottom Wall 11; Enclosure 12; Side Wall 121; Reinforcing Rib 122; Connecting Protrusion 13; Mounting Component 14; Battery Cell 20; Reinforcing Component 30; First Reinforcing Component 31; First Buffer Chamber 311; First Plate 312; Second Plate 313; Connecting Plate 314; Second Reinforcing Component 32; Second Buffer Chamber 321; Functional Component 40; High Voltage Connector 41; Low Voltage Connector 42; Electrical Connector 43; First Connecting Part 44; Second Connecting Part 45. Detailed Implementation

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In this application, "multiple" means two or more (including two).

[0051] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0052] In this application, a battery refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or battery pack. Some batteries may include a housing for encapsulating one or more battery cells or multiple battery modules. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0053] In some related technologies, the casing has a thin wall thickness and low compressive strength. Especially under front-to-back compression conditions, the high and low voltage connectors and heat exchange structures located in front of and behind the battery are easily damaged, resulting in high voltage insulation failure or heat exchange medium leakage, which affects the safety of the battery system.

[0054] Based on this, this application proposes a battery, including a housing, a battery cell, and a reinforcing member. The housing includes a first housing and a second housing that overlap each other. At least one of the first housing and the second housing includes a bottom wall and a surrounding wall, the surrounding wall being disposed around and connected to the bottom wall. The battery cell is disposed within the housing. The reinforcing member is disposed on the side of the surrounding wall facing the battery cell, on the side away from the battery cell, or on both the side facing the battery cell and the side away from the battery cell. The reinforcing member is at least connected to the surrounding wall and serves to strengthen the surrounding wall.

[0055] In a battery with the above-described structure, the strength of the enclosure is enhanced by providing reinforcements on at least one side of the enclosure facing the battery cell and the other side facing away from the battery cell. This improves the crush resistance of the enclosure, especially the crush resistance of the enclosure, thereby enhancing the battery's impact resistance.

[0056] The battery disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0057] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0058] Referring to Figure 1, which is a schematic diagram of a vehicle 1000 provided in some embodiments of this application, the vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power requirements of the vehicle 1000 during startup, navigation, and driving.

[0059] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0060] Referring to FIG2, which is an exploded view of a battery 100 according to some embodiments of the present application, the battery 100 includes a housing 10 and a battery cell 20. The housing 10 has a receiving cavity, and the battery cell 20 is received in the receiving cavity of the housing 10.

[0061] The housing 10 provides a cavity for housing the battery cell 20, and the housing 10 can adopt various structures. The housing 10 can be in various shapes, such as a cylinder or a cuboid.

[0062] The battery cell 20 may include a casing, an electrode assembly, and an electrolyte. The casing is used to house the electrode assembly and the electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell 20 mainly operates by the movement of metal ions between the positive and negative electrode. The casing of the battery cell 20 may be provided with terminals or other attachments connected to tabs, serving as electrical connections for the battery cell 20.

[0063] In battery 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 of battery 100 can be directly connected in series, parallel, or in a mixed manner to form a battery pack, which is then housed within the casing 10. Alternatively, battery 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed manner to form multiple battery packs, which are then connected in series, parallel, or in a mixed manner to form a whole and housed within the casing 10. Battery 100 may also include other structures; for example, it may include electrical connectors for achieving electrical connections between multiple battery cells 20.

[0064] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0065] Hereinafter, with reference to the accompanying drawings, a battery 100 according to an embodiment of the present application will be described.

[0066] Please refer to Figures 2-7. Figure 2 is an exploded view of the battery 100 provided in an embodiment of this application; Figures 3, 5, and 7 are partial structural schematic diagrams of the battery 100 provided in different embodiments of this application; Figure 4 is an enlarged structural schematic diagram of the area circled at A in Figure 3; Figure 6 is an enlarged structural schematic diagram of the area circled at B in Figure 5. The battery 100 includes: a housing 10, a battery cell 20, and a reinforcing member 30.

[0067] The housing 10 includes a first housing 101 and a second housing 102 that overlap each other. At least one of the first housing 101 and the second housing 102 includes a bottom wall 11 and a surrounding wall 12, with the surrounding wall 12 surrounding and connected to the bottom wall 11. A battery cell 20 is disposed within the housing 10. A reinforcing member 30 is disposed on the side of the surrounding wall 12 facing the battery cell 20, or on the side of the surrounding wall 12 away from the battery cell 20, or on both the side of the surrounding wall 12 facing the battery cell 20 and the side away from the battery cell 20. The reinforcing member 30 is at least connected to the surrounding wall 12 and serves to strengthen the surrounding wall 12.

[0068] The structures of the first box 101 and the second box 102 may be the same or different. For example, in some embodiments, both the second box 102 and the first box 101 include a bottom wall 11 and a surrounding wall 12. Both the first box 101 and the second box 102 are hollow structures with an opening on one side, and the opening side of the first box 101 covers the opening side of the second box 102. In other embodiments, the second box 102 includes a bottom wall 11 and a surrounding wall 12. The second box 102 is a hollow structure with an opening at one end. The first box 101 only includes the bottom wall 11 and does not include the surrounding wall 12. The first box 101 is formed as a cover structure, and the first box 101 covers the opening side of the second box 102, so that the first box 101 and the second box 102 together define a receiving cavity; etc.

[0069] Furthermore, in embodiments where both the first housing 101 and the second housing 102 include enclosure walls 12, the reinforcing member 30 may be provided only in one of the first housing 101 and the second housing 102, or the reinforcing member 30 may be provided in the enclosure walls 12 of the first housing 101 and the enclosure walls 12 of the second housing 102 respectively.

[0070] The following description uses the first box 101 as the cover structure and the second box 102 including the bottom wall 11 and the surrounding wall 12 as an example. Based on the following description, other structures of the first box 101 and the second box 102 will be understood by those skilled in the art.

[0071] The bottom wall 11 and the surrounding wall 12 of the second housing 102 can be integrally formed or connected together by welding, fasteners, or other methods. Furthermore, the surrounding wall 12 can be a continuously extending integrally formed part, or it can be composed of multiple parts. For example, the surrounding wall 12 can include multiple side walls 121 extending circumferentially along the bottom wall 11 and connected end to end. The multiple side walls 121 can be integrally formed or they can be separate parts connected together by welding, fasteners, or other methods.

[0072] In some specific embodiments, the second box 102 is a sheet metal integral stamping part, that is, a complete sheet metal is formed by sheet metal stamping deformation to form a connected bottom wall 11 and a surrounding wall 12. There is no connecting gap between the bottom wall 11 and the surrounding wall 12, which has the advantages of low cost, good sealing performance and low weight.

[0073] There can be one or more reinforcing members 30. Furthermore, the placement of the reinforcing members 30 can be flexibly configured as needed. For example, the reinforcing member 30 can be placed only on the side of the enclosure 12 facing the battery cell 20 (i.e., the inner side of the enclosure 12), without occupying space outside the housing 10 or affecting the overall space occupied by the battery 100; or the reinforcing member 30 can be placed only on the side of the enclosure 12 away from the battery cell 20 (i.e., the outer side of the enclosure 12), without affecting the arrangement of the battery cells 20 inside the housing 10, and when the housing 10 is subjected to external pressure or impact, the reinforcing member 30 contacts the impact source before the enclosure 12, thus better reducing the damage to the housing 10; or, the reinforcing member 30 can be placed on both the inner and outer sides of the enclosure 12, further improving the reinforcing effect of the reinforcing member 30 on the enclosure 12.

[0074] The reinforcing member 30 may be made of materials including, but not limited to, metal and insulating materials. For example, the reinforcing member 30 located on the outside of the enclosure 12 may be made of metal, resulting in stronger structural strength. Alternatively, the reinforcing member 30 located on the inside of the enclosure 12 may be made of insulating material, or a multi-layered structure with a metal component covered by an insulating layer, to prevent short circuits to the battery cells 20 and other electrical connections. Furthermore, the reinforcing member 30 located on the inside of the enclosure 12 may also be made of metal, and the reinforcing member 30 may be spaced apart from the battery cells 20 and other charged structures to minimize the risk of short circuits. The connection methods between the reinforcing member 30 and the enclosure 12 include, but are not limited to, welding, riveting, fastener connection, and bonding.

[0075] In some embodiments, as shown in Figures 2, 3, and 5, the enclosure 12 includes a plurality of sidewalls 121 connected end to end in sequence. At least one sidewall 121 is provided with a functional component 40 and a reinforcing member 30.

[0076] Functional component 40 can be a high-voltage connector 41, a low-voltage connector 42, a heat exchange joint, or other components with specific functions that are installed on the side wall 121. The high-voltage connector 41 is used to make an electrical connection with the electrical connection part of the battery cell 20 to achieve power transmission; the low-voltage connector 42 is used to make an electrical connection with components such as signal acquisition components; the heat exchange joint is used to connect with heat exchange structures such as heat exchange tubes and heat exchange plates to achieve the input or output of heat exchange medium within the heat exchange structure. Functional component 40 can pass through the side wall 121, or be installed on the inner or outer side of the side wall 121.

[0077] At least one sidewall 121 is provided with a functional component 40 and a reinforcing member 30. All reinforcing members 30 may be located on the same sidewall 121 as the functional component 40, or only some reinforcing members 30 may be located on the same sidewall 121 as the functional component 40. In embodiments where multiple sidewalls 121 are provided with functional components 40, reinforcing members 30 may be provided on all sidewalls 121 with functional components 40, or only some sidewalls 121 with functional components 40 may be provided with reinforcing members 30; both are within the scope of protection of this application. The reinforcing members 30 and functional components 40 on the same sidewall 121 may be located on the same side or different sides in the inward and outward directions of the sidewall 121.

[0078] When the battery 100 is involved in a collision or subjected to an external impact, the functional component 40 and its mounting structure are easily damaged, and such damage significantly affects the normal operation of the battery 100. In the above embodiment, by placing the reinforcing member 30 and the functional component 40 on the same sidewall 121, the reinforcing member 30 can be used to strengthen the structural strength of the sidewall 121 near the functional component 40, thereby reducing the risk of deformation of the sidewall 121 in that area or reducing the degree of deformation, and reducing the risk of damage or failure of the functional component 40.

[0079] According to the embodiments of this application, the battery 100 strengthens the enclosure 12 near the functional components by providing a reinforcing member 30 on at least one side of the enclosure 12 facing the battery cell 20 and the side away from the battery cell 20, thereby improving the compressive strength of the housing 10, especially the compressive strength of the enclosure 12, and thus improving the impact resistance of the battery 100.

[0080] According to some embodiments of this application, as shown in Figures 3 and 4, at least one location on the outer periphery of the first housing 101 and the outer periphery of the second housing 102 is provided with a connecting protrusion 13 extending away from the battery cell 20. The reinforcing member 30 includes a first reinforcing member 31 provided on the side of the enclosure 12 facing away from the battery cell 20.

[0081] The connecting protrusion 13 provided on the first housing 101 can be used to connect the first housing 101 with other structures, and the connecting protrusion 13 provided on the second housing 102 can be used to connect the second housing 102 with other structures. For example, the outer periphery of the first housing 101 and the outer periphery of the second housing 102 are both provided with connecting protrusions 13, and the connecting protrusions 13 of the first housing 101 and the connecting protrusions 13 of the second housing 102 can be connected to each other to realize the connection between the first housing 101 and the second housing 102.

[0082] The connecting protrusion 13 can be connected to the first housing 101 or the second housing 102 by welding, integral molding, or other methods. For example, in the examples shown in Figures 3 and 4, the connecting protrusion 13 is a flange, which is integrally formed with the wall 12 of the second housing 102 by sheet metal stamping. This improves the sealing performance and eliminates the assembly process between the flange and the second housing 102, making the connection between the flange and the wall 12 more robust and reliable.

[0083] The first reinforcing member 31 is located on the side of the enclosure 12 facing away from the battery cell 20. That is, the first reinforcing member 31 and the connecting protrusion 13 are located on the same side of the enclosure 12. In the direction perpendicular to the wall thickness of the enclosure 12, the space occupied by the first reinforcing member 31 and the connecting protrusion 13 overlaps at least partially. Therefore, the first reinforcing member 31 can be provided without increasing the overall space occupied by the battery 100, or only slightly increasing the overall space occupied by the battery 100, so that the overall structure of the battery 100 is compact and the enveloping space is small.

[0084] In some specific embodiments, the height of the first reinforcing member 31 protruding from the enclosure wall 12 is less than or equal to the height of the connecting protrusion 13 protruding from the enclosure wall 12.

[0085] In the above embodiment, in the direction perpendicular to the wall thickness of the enclosure 12, the first reinforcing member 31 makes full use of the height space protruding from the connecting protrusion 13 without adding extra space, so that the overall size of the battery 100 remains unchanged before and after the installation of the first reinforcing member 31, which facilitates the application of the battery 100 in the power-consuming device.

[0086] For example, the connecting protrusion 13 located on the rear side of the enclosure 12 of the second housing 102 protrudes rearward from the rear surface of the enclosure 12 by a height of L1, and the first reinforcing member 31 located on the rear side of the enclosure 12 protrudes rearward from the rear surface of the enclosure 12 by a height of L2, where L2 is less than or equal to L1. The first reinforcing member 31 is positioned using the space along one side of the connecting protrusion 13 in the vertical direction. In the front-rear direction, the placement of the first reinforcing member 31 does not increase the overall front-rear dimension of the battery 100, thus improving the compressive strength of the housing 10 without affecting volume utilization.

[0087] In some embodiments of this application, the first reinforcing member 31 defines a first buffer cavity 311; or, as shown in Figures 4 and 6, the first reinforcing member 31 cooperates with the surrounding wall 12 to define a first buffer cavity 311.

[0088] The first buffer cavity 311 can be a closed cavity or a cavity that communicates with the outside. The first reinforcing member 31 defines the first buffer cavity 311, meaning that all the cavity walls of the first buffer cavity 311 are the walls of the first reinforcing member 31; the first reinforcing member 31 and the surrounding wall 12 cooperate to define the first buffer cavity 311, meaning that part of the cavity walls of the first buffer cavity 311 are the walls of the first reinforcing member 31, and another part of the walls are the walls of the surrounding wall 12.

[0089] The first buffer cavity 311 refers to a cavity with a buffering function. When subjected to external force, the space inside the first buffer cavity 311 can undergo a certain degree of collapse and deformation.

[0090] In the above embodiment, the collapse and deformation of the first buffer cavity 311 can reduce the intensity of the external force transmission, thereby reducing the damage to the housing 10 and components such as the battery cell 20 inside the housing 10, and improving the compressive strength of the housing 10.

[0091] In some embodiments, as shown in Figures 3-6, the first reinforcing member 31 includes a plurality of first plates 312 and at least one second plate 313. The second plate 313 is spaced apart from the enclosure wall 12 by a certain distance, and at least two side edges of the second plate 313 are connected to the enclosure wall 12 through the first plates 312 to define a first buffer cavity 311 between the second plate 313 and the enclosure wall 12.

[0092] The first plate 312 can significantly improve the structural strength of the enclosure 12, and the second plate 313 can significantly improve the buffering effect. The more first plates 312 there are and the larger their total size, the better the structural reinforcement effect of the enclosure 12. The more second plates 313 there are and the larger their area, the better the buffering effect.

[0093] For example, as shown in Figures 3 and 4, the second plate 313 is a square plate. The two opposite edges of the second plate 313 are connected to the enclosure 12 via first plates 312, forming an n-shaped structure. The first reinforcing member 31 has a simple structure and is easy to manufacture. For example, as shown in Figures 5 and 6, the second plate 313 is a square plate. The three sides of the second plate 313 are connected to the enclosure 12 via first plates 312. The number and total size of the first plates 312 are larger, resulting in a better strength enhancement.

[0094] The first plate 312 and the second plate 313 are connected, so that the first reinforcing member 31 forms a cover-like structure. The cover structure covers the outside of the enclosure 12, so that the space inside the cover structure forms a first buffer cavity 311. For example, the first plate 312 and the second plate 313 can be formed by processing sheet metal through processes such as shearing and bending. In the above embodiment, the structure of the first reinforcing member 31 is simple and easy to process and form, taking into account the dual requirements of improving the structural reinforcement effect and the buffering effect.

[0095] In some specific embodiments, there are multiple second plates 313, which are arranged circumferentially along the enclosure wall 12. The edges of the second plates 313 on both sides of the enclosure wall 12 are connected to the enclosure wall 12 through the first plates 312.

[0096] Multiple second plates 313 are arranged circumferentially along the enclosure wall 12. For example, multiple second plates 313 are provided on the same side wall 121 of the enclosure wall 12, such as the rear side wall, and multiple second plates 313 on the rear side wall are arranged in the left-right direction; or, for example, at least two second plates 313 can be provided on different side walls 121 of the enclosure wall 12, such as the front side wall, left side wall, rear side wall and right side wall of the enclosure wall 12, each of which is provided with at least one second plate 313, so that all second plates 313 are arranged circumferentially around the enclosure wall 12.

[0097] Furthermore, the edges of the second plate 313 on both sides of the enclosure 12 are connected to the enclosure 12 via the first plate 312. For example, the left and right edges of the second plate 313 on the rear side wall are connected to the enclosure 12 via the first plate 312. The second plate 313 and the two connected first plates 312 form an n-shaped structure. The first plates 312 corresponding to the multiple second plates 313 can be arranged along the circumference of the enclosure 12.

[0098] Therefore, the first reinforcing member 31 is distributed over a wider area around the enclosure 12, and multiple first plates 312 are arranged around the enclosure 12, while multiple second plates 313 can be arranged around the enclosure 12, thereby enhancing the strength of the enclosure 12 over a larger area and improving the overall compressive strength of the box 10.

[0099] In embodiments where there are multiple second plates 313, the first reinforcing member 31 can be an integral piece, such as multiple second plates 313 can be connected as one piece by the first plate 312 and other plates, which is easier to process; or, the first reinforcing member 31 can include multiple individual pieces, each individual piece including at least one second plate 313.

[0100] For example, in some embodiments, as shown in Figures 3 and 4, there are multiple second plates 313, which are arranged circumferentially along the enclosure wall 12, and the first plates 312 on the adjacent sides of two adjacent second plates 313 are connected by a connecting plate 314.

[0101] Thus, in the circumferential direction of the enclosure 12, two adjacent second plates 313 are connected together by a first plate 312, a connecting plate 314 and another first plate 312 connected in sequence to form a whole. During the processing, the whole plate can be bent multiple times to obtain the connected first plate 312, second plate 313 and connecting plate 314. The processing technology is simple and the production efficiency is high. Furthermore, the connecting plate 314 can be used to connect with the enclosure 12 to increase the connection area between the first reinforcing member 31 and the enclosure 12 and improve the connection reliability.

[0102] For example, in other embodiments, there are multiple second plates 313, which are arranged at intervals along the circumference of the enclosure 12. Each second plate 313 has a first plate 312 on both sides, and the first plates 312 on the adjacent sides of two adjacent second plates 313 are separated from each other. Thus, each second plate 313 and its corresponding two first plates 312 are formed as a single piece, and the multiple second plates 313 do not interfere with each other. The placement and processing can be more flexible to meet the installation requirements of different sized installation spaces on the enclosure 12.

[0103] In some embodiments of this application, as shown in Figures 4 and 6, a connecting plate 314 is provided on the side edge of the first plate 312 away from the second plate 313, and the connecting plate 314 is in close contact with the surface of the enclosure 12.

[0104] The connecting plate 314, the first plate 312, and the second plate 313 generally form a Z-shaped structure, which can enhance strength and provide buffering. Furthermore, by having the connecting plate 314 adhere to the surface of the enclosure 12, the connection area can be increased, thereby further enhancing the strength of the enclosure 12.

[0105] In some embodiments, as shown in Figures 3 and 5, the functional components 40 and the reinforcing members 30 are arranged circumferentially along the enclosure wall 12 to make full use of the space circumferentially of the enclosure wall 12. For example, multiple functional components 40 and multiple reinforcing members 30 can be arranged alternately circumferentially along the enclosure wall 12, or multiple functional components 40 can be installed at appropriate positions on the enclosure wall 12 according to functional requirements, and the reinforcing members 30 can be provided according to the size of the gap between the functional components 40.

[0106] According to some embodiments of this application, as shown in FIG7, at least some functional components 40 are located within the housing 10. The reinforcing member 30 includes a second reinforcing member 32 disposed within the housing 10, on the same side wall 121, the protrusion height of the second reinforcing member 32 being no less than the protrusion height of the functional component 40.

[0107] At least some of the functional components 40 are located inside the housing 10. The functional components 40 can be installed entirely inside the housing 10, or the functional components 40 can pass through the enclosure 12 and be partially located inside the housing 10.

[0108] The protrusion height of the second reinforcing member 32 refers to the distance between the farthest point of the second reinforcing member 32 from the inner surface of the sidewall 121 and the inner surface of the sidewall 121 in the thickness direction of the sidewall 121. The protrusion height of the functional component 40 is set at the distance between the farthest point of the functional component 40 from the inner surface of the sidewall 121 and the inner surface of the sidewall 121 in the thickness direction of the sidewall 121.

[0109] The protrusion height of the second reinforcing member 32 is not lower than the protrusion height of the functional component 40. By using the second reinforcing member 32, a certain safety space can be reserved near the functional component 40 inside the housing 10. When the enclosure 12 is deformed by compression, the second reinforcing member 32 contacts other components inside the housing 10 before the functional component 40. After the second reinforcing member 32 contacts other components and forms a certain buffer against the extrusion force, the functional component 40 then contacts other components inside the housing 10. Alternatively, if the deformation is small after buffering, the functional component 40 may not contact and be compressed with other components inside the housing 10, thereby greatly improving the problem of deformation and failure of the functional component 40 due to direct compression.

[0110] In some embodiments, as shown in FIG7, the functional component 40 includes a high-voltage connector 41, which is disposed on the sidewall 121 of the battery cell 20 along a first direction. The high-voltage connector 41 is connected to the battery cell 20 via an electrical connector 43, which includes a first connecting portion 44 located on the side of the battery cell 20 along the first direction and a second connecting portion 45 located on the side of the battery cell 20 along a second direction. The first direction and the second direction intersect. The first connecting portion 44 is connected to the high-voltage connector 41, and the protrusion height of the second reinforcing member 32 is not lower than the protrusion height of the first connecting portion 44.

[0111] Deformation or damage to the electrical connection structure at the high-voltage connector 41 has a significant impact on the safety of the battery 100. By ensuring that the protrusion height of the second reinforcing member 32, located on the same side wall 121, is no less than that of the high-voltage connector 41, the second reinforcing member 32 can provide protection for the high-voltage connector 41, preventing it from being directly subjected to compression and thus reducing the risk of failure.

[0112] Electrical connector 43 can be a busbar, wire harness, or other component used for conducting electricity. By including a first connecting portion 44 and a second connecting portion 45, electrical connector 43 can extend to different sides of the battery cell 20, thereby achieving connection between the battery cell 20 and the high-voltage connector 41 over a larger area within the housing 10.

[0113] The first connection part 44 is located on one side of the battery cell 20 along the first direction, that is, the first connection part 44 and the high voltage connector 41 are located on the same side of the battery cell 20 in the first direction, which facilitates the connection between the first connection part 44 and the high voltage connector 41.

[0114] The protrusion height of the first connecting portion 44 is the distance between the farthest point of the first connecting portion 44 from the inner surface of the side wall 121 and the inner surface of the side wall 121 in the thickness direction of the side wall 121. The protrusion height of the second reinforcing member 32 is not lower than the protrusion height of the first connecting portion 44, so that when extrusion deformation occurs, the second reinforcing member 32 can contact other components inside the housing 10 before the first connecting portion 44. The first connecting portion 44 and the connection between the first connecting portion 44 and the high-voltage connector 41 are not directly subjected to extrusion, which helps to improve the problem of deformation failure of the first connecting portion 44 and the connection.

[0115] It is worth noting that in some embodiments including a high-voltage connector 41, a low-voltage connector 42, and a heat exchanger, the high-voltage connector 41 has the highest protrusion height, and the component connected to the high-voltage connector 41 (i.e., the first connecting part 44) also has the highest protrusion height. Therefore, when the protrusion height of the second reinforcing member 32 is not lower than the protrusion height of the first connecting part 44, the second reinforcing member 32 can also provide good protection for the low-voltage connector 42 and its connected components, as well as the heat exchanger and its connected components on the same sidewall 121.

[0116] In some embodiments, as shown in FIG7, the second reinforcing member 32 can connect the bottom wall 11 and the surrounding wall 12 to improve the fixing stability of the second reinforcing member 32, making the second reinforcing member 32 less prone to misalignment and deformation when squeezed, thereby improving the protection effect on the nearby functional components 40.

[0117] Furthermore, the second reinforcing member 32 is less likely to come into contact with live components such as the battery cell 20, high-voltage connector 41, low-voltage connector 42, and electrical connector 43 when it deforms, thus reducing the risk of short circuits. Of course, the second reinforcing member 32 can also be made of insulating material, or a metal material with an insulating coating, to reduce the risk of short circuits.

[0118] In some embodiments, the housing 10 is provided with an expansion beam, and a second reinforcing member 32 connects the expansion beam and the enclosure wall 12. The expansion beam is used to divide the space inside the housing 10; for example, the battery cell 20 and the second reinforcing member 32 are located on opposite sides of the expansion beam. Furthermore, the expansion beam can strengthen the structural strength of the housing 10; for example, the expansion beam can connect two opposite side walls 121 of the enclosure wall 12, or the expansion beam can connect the bottom wall 11 and the enclosure wall 12.

[0119] The second reinforcing member 32 connects the expansion beam and the enclosure 12, which can better fix the position of the second reinforcing member 32. When subjected to compression, the second reinforcing member 32 is not easy to be misaligned or deformed, thus improving the protection effect on the functional component 40. Even if the second reinforcing member 32 is deformed, it is not easy to come into contact with the battery cell 20 under the separation effect of the expansion beam, thereby reducing the risk of the battery cell 20 being damaged or short-circuited due to compression.

[0120] In some embodiments, the second reinforcement 32 defines a second buffer cavity 321, or the second reinforcement 32 defines a second buffer cavity 321 between the housing 10 and the housing 32.

[0121] The second buffer cavity 321 can play a certain buffering role to improve the compression resistance of the second reinforcing member 32, reduce the transmission of compressive force, and improve the protection effect on the functional component 40. In addition, the second buffer cavity 321 can reduce the weight of the second reinforcing member 32, thereby reducing the overall weight of the battery 100 while meeting the impact resistance requirements.

[0122] In some specific embodiments, as shown in FIG7, the second reinforcing member 32 is bent and extended and includes three plates connected in sequence, the three plates forming a Z-shape, wherein one end of the plate is fitted and connected to the surrounding wall 12, the middle plate is opposite to and spaced from the bottom wall 11, and the other end of the plate is perpendicularly connected to the bottom wall 11, thereby defining a second buffer cavity 321 between the middle plate and the bottom wall 11. In other embodiments, the second reinforcing member 32 may be U-shaped and include four plates connected end to end in sequence, wherein two adjacent plates are fitted and connected to the bottom wall 11 and the surrounding wall 12 respectively, and the second reinforcing member 32 defines the second buffer cavity 321. In still other embodiments, the second reinforcing member 32 may be L-shaped and include two plates, one plate being spaced apart from the bottom wall 11 and connected to the surrounding wall 12, and the other plate being spaced apart from the surrounding wall 12 and connected to the bottom wall 11, the second reinforcing member 32 and the housing 10 cooperate to define the second buffer cavity 321.

[0123] According to some embodiments of this application, as shown in Figures 3 and 5, at least one of the first housing 101 and the second housing 102 is a sheet metal integral stamping part. That is, a complete sheet metal is formed into a cover structure or a hollow structure with an opening on one side through sheet metal stamping process, which has high production efficiency and low production cost.

[0124] For sheet metal integral stamping parts, the sheet thickness is usually thin. For example, the wall thickness of the formed enclosure 12 is thin and its compressive strength is low. By setting the reinforcing member 30 on the enclosure 12, the requirements of compressive strength and impact resistance of the battery 100 can be met while reducing costs.

[0125] In some embodiments, as shown in Figures 3 and 5, the enclosure 12 is partially deformed toward or away from the battery cell 20 to form a reinforcing rib 122.

[0126] In the process of sheet metal stamping, the enclosure 12 is not a plate that extends smoothly along a straight line or arc, but is locally deformed to form reinforcing ribs 122. The reinforcing ribs 122 can improve the structural strength of the enclosure 12 to a certain extent, so that the box 10 can take into account high production efficiency, low production cost and strength requirements.

[0127] The reinforcing rib 122 can be any shape, such as a long strip rib, a ring rib, or a cross rib. The long strip rib can extend along the arrangement direction of the first box 101 and the second box 102 (such as the vertical direction), or extend along the circumference of the enclosure 12.

[0128] The electrical device according to the second aspect embodiment of this application includes the battery 100 according to the first aspect embodiment of this application described above. The battery 100 is used to provide electrical energy to the electrical device. Thus, by employing the battery 100 described above, the strength of the enclosure 12 near the functional components is at least strengthened, and the compressive strength of the housing 10, especially the compressive strength of the enclosure 12, can be improved, thereby improving the impact resistance of the battery 100.

[0129] The following describes a specific embodiment of a battery 100 and a vehicle 1000 having the same, in conjunction with the accompanying drawings.

[0130] As shown in Figures 5-7, a battery 100 according to a specific embodiment of this application includes a housing 10, a plurality of battery cells 20, a high-voltage connector 41, a low-voltage connector 42, a heat exchange joint, a first reinforcing member 31, and a second reinforcing member 32. The housing 10 includes a first housing 101 and a second housing 102. The first housing 101 is a cover structure with a connecting protrusion 13 formed by a sealing flange along its outer periphery. The second housing 102 is a hollow structure and includes a bottom wall 11 and a surrounding wall 12. The upper edge of the surrounding wall 12 has a connecting protrusion 13 formed by a sealing flange. The first housing 101 covers the second housing 102, and the connecting protrusions 13 of the first housing 101 and the second housing 102 are sealed together to form a sealed receiving cavity.

[0131] The enclosure 12 includes a front side wall, a rear side wall, a left side wall, and a right side wall, with the lengths of the front and rear side walls being shorter than the lengths of the left and right side walls. Mounting members 14 are provided on the outer sides of the left and right side walls, through which the battery 100 is mounted to the body of the vehicle 1000. A high-voltage connector 41, a low-voltage connector 42, and a heat exchanger are installed in the rear side wall. Multiple battery cells 20 are housed within the receiving cavity and connected to the high-voltage connector 41 via electrical connectors 43.

[0132] The second housing 102 is a sheet metal integral stamped part. A first reinforcing member 31 is provided on the outer side of the rear side wall, and a second reinforcing member 32 is provided on the inner side of the rear side wall. The materials of the first reinforcing member 31 and the second reinforcing member 32 can be selected as metal anti-crush brackets or non-metal anti-crush brackets according to the different requirements of the arrangement of functional components 40, the size of battery 100 and the anti-compression strength.

[0133] The first reinforcing member 31 includes a first plate 312 perpendicular to the rear sidewall and a second plate 313 spaced apart from the rear sidewall, so that a first buffer cavity 311 is formed between the first reinforcing member 31 and the rear sidewall. In the left-right direction, the first reinforcing member 31 is located between the high-voltage connector 41 and the low-voltage connector 42. The first reinforcing member 31 utilizes the space below the connecting protrusion 13, converting the space below the connecting protrusion 13 into a buffer space, without increasing the overall envelope space of the battery 100 or affecting the volume utilization rate inside the housing 10. At the same time, it can provide buffering or reinforcement of the enclosure wall 12 under the condition of compression and impact, distributing the local extrusion force to a larger surface, improving the extrusion resistance of the housing 10, and reducing deformation after compression.

[0134] The second reinforcing member 32 connects the bottom wall 11 and the rear side wall, and the second reinforcing member 32 cooperates with the bottom wall 11 and the rear side wall to define the second buffer cavity 321. The second reinforcing member 32 can be provided on the left and right sides of the functional component 40, such as the high-voltage connector 41. The height of the second reinforcing member 32 protruding from the rear side wall is greater than the protrusion height of the first connecting portion 44 of the electrical connector 43 connected to the high-voltage connector 41. Thus, the second reinforcing member 32 can play a supporting role, supporting weak areas, leaving a safe space, and preventing the high-voltage connector 41, low-voltage connector 42, and heat exchange joint from being directly squeezed and deformed or failing.

[0135] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0136] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. 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, wherein, include: The enclosure includes a first enclosure and a second enclosure that fit together. The first enclosure and / or the second enclosure includes a bottom wall and a surrounding wall. The surrounding wall is arranged around the bottom wall and connected to the bottom wall. The surrounding wall includes a plurality of side walls that are connected end to end in sequence. A battery cell, wherein the battery cell is disposed within the housing; A reinforcing member is provided on the side of the enclosure facing and / or away from the battery cell. At least one of the side walls is provided with a functional component and the reinforcing member. The reinforcing member is at least connected to the enclosure and is used to strengthen the enclosure.

2. The battery as claimed in claim 1, wherein, The outer periphery of the first housing and / or the outer periphery of the second housing are provided with connecting protrusions extending away from the battery cell, and the reinforcing member includes a first reinforcing member provided on the side of the enclosure facing away from the battery cell.

3. The battery as claimed in claim 2, wherein, The height of the first reinforcing member protruding from the enclosure wall is less than or equal to the height of the connecting protrusion protruding from the enclosure wall.

4. The battery as claimed in claim 2 or 3, wherein, The first reinforcing member defines a first buffer cavity; or, the first reinforcing member cooperates with the enclosure wall to define a first buffer cavity.

5. The battery as claimed in claim 4, wherein, The first reinforcing member includes a plurality of first plates and at least one second plate. The second plate is spaced apart from the enclosure wall by a certain distance. At least two side edges of the second plate are connected to the enclosure wall through the first plates to define the first buffer cavity between the second plate and the enclosure wall.

6. The battery as claimed in claim 5, wherein, There are multiple second plates, which are arranged circumferentially along the enclosure wall. The edges of the second plates on both sides of the enclosure wall in the circumferential direction are respectively connected to the enclosure wall through the first plate.

7. The battery as claimed in claim 5, wherein, There are multiple second plates, which are arranged circumferentially along the enclosure wall. The first plates on the adjacent sides of two adjacent second plates are connected by a connecting plate.

8. The battery as claimed in claim 5 or 6, wherein, A connecting plate is provided on the side edge of the first plate away from the second plate, and the connecting plate is in close contact with the surface of the enclosure.

9. The battery as claimed in any one of claims 1-8, wherein, At least some of the functional components are located inside the housing, and the reinforcing member includes a second reinforcing member disposed inside the housing. On the same side wall, the protrusion height of the second reinforcing member is not less than the protrusion height of the functional component.

10. The battery as claimed in claim 9, wherein, The functional component includes a high-voltage connector, which is disposed on the sidewall of the battery cell along one side of the first direction. The high-voltage connector is connected to the battery cell via an electrical connector. The electrical connector includes a first connecting portion located on one side of the battery cell along the first direction and a second connecting portion located on one side of the battery cell along the second direction. The first direction intersects with the second direction. The first connecting portion is connected to the high-voltage connector. The protrusion height of the second reinforcing member is not lower than the protrusion height of the first connecting portion.

11. The battery as claimed in claim 9 or 10, wherein, The second reinforcing member connects the bottom wall and the enclosure wall; and / or, the box body is provided with an expansion beam, and the second reinforcing member connects the expansion beam and the enclosure wall.

12. The battery as claimed in any one of claims 9-11, wherein, The second reinforcement defines a second buffer cavity, or the second reinforcement defines a second buffer cavity between itself and the housing.

13. The battery as claimed in any one of claims 1-12, wherein, The first box and / or the second box are integral sheet metal stamping parts.

14. The battery of claim 13, wherein, The enclosure is partially deformed toward or away from the battery cell to form reinforcing ribs.

15. An electrical appliance, wherein, Includes the battery as described in any one of claims 1-14, the battery being used to provide electrical energy to the electrical device.

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