Batteries and power-consuming devices

Abstract

The present application belongs to the field of battery technology, and specifically discloses a battery and a power consuming device, the battery including a housing and a battery assembly, the battery assembly is accommodated in the housing, the battery assembly includes at least one battery cell, the battery assembly is arranged along a first direction, the first direction is the longitudinal direction of the battery or the running direction of a power consuming device having the battery, the battery cell has a first surface and a second surface, the first surface is provided with an electrode terminal, the second surface is connected to the housing, the second surface intersects with a third direction, and the third direction intersects with both the first direction and a horizontal plane. According to the battery of the present application, the battery cell has a first surface and a second surface, the second surface is arranged to intersect with the third direction, and the electrode terminal is arranged on the first surface and the second surface is connected to the housing, so that the connecting surface between the battery cell and the housing does not have the electrode terminal, and it is easy to fully expose the electrode terminal to the outside after the housing is opened, which improves the convenience of repair and inspection of the battery.

Description

Technical Field

[0001] This application relates to the field of battery technology, and particularly to batteries and power-consuming devices.

Background Art

[0002] With the development of new energy, in more and more fields, new energy is being adopted as power. Since it has advantages such as high energy density, cycle charging ability, safety, and environmental friendliness, power batteries are widely applied in fields such as new energy vehicles, consumer electronics, and energy storage systems.

[0003] Power batteries generally include a housing and battery cells. The battery cells are provided inside the housing and fixed to the housing in an up-and-down viscose manner. For battery cells with electrode terminals exposed up and down, the viscose fixing method is not convenient for battery repair and detection.

Summary of the Invention

[0004] In view of the above problems, this application provides a battery and a power-consuming device that solve the problem that the repair and detection of conventional batteries are not convenient.

[0005] The first aspect of this application proposes a battery, and the battery includes a housing, a battery assembly accommodated in the housing and including at least one battery cell, and installed along a first direction, where the first direction is the longitudinal direction of the battery or the traveling direction of a power-consuming device having the battery. The battery cell has a first surface and a second surface, an electrode terminal is provided on the first surface, the second surface is connected to the housing, the second surface intersects a third direction, and the third direction intersects both the first direction and the horizontal plane.

[0006] According to the battery of this application, the battery cell has a first surface and a second surface, and the second surface is installed so as to intersect with a third direction (the third direction intersects with both the first direction and the horizontal direction). Here, electrode terminals are installed on the first surface and the second surface is connected to the housing, so that there are no electrode terminals on the connection surface between the battery cell and the housing, it is easy to fully expose the electrode terminals to the outside after opening the housing, and after opening the housing, it is easy to repair and detect the battery without separating the battery cell and the housing, thereby improving the convenience of battery repair and detection.

[0007] In some embodiments of this application, the longitudinal direction of the battery is parallel to or intersects the direction of travel of the power-consuming device. By aligning the longitudinal direction of the battery with the direction of travel of the power-consuming device, the convenience of arranging the battery in the power-consuming device is improved.

[0008] In some embodiments of this application, the first surface is positioned opposite the second surface along the third direction, and the battery cell further has a third surface, the third surface being the surface with the largest area of ​​the battery cell, the third surface being positioned along the third direction, intersecting the horizontal plane, and the third surface being connected to the first surface and the second surface. In this embodiment, the first surface and the second surface are positioned opposite each other in the third direction, and when repairing or detecting the battery, the housing can be opened, the second surface of the battery cell is connected to the battery housing, and the electrode terminals on the first surface can be exposed to the outside, facilitating battery repair and detection without separating the battery cell and the housing after opening the housing, further improving the convenience of battery repair and detection. In addition, the third surface is the surface with the largest area, and the area of ​​the second surface is smaller than that of the third surface, allowing the housing to connect more battery cells per unit area, thereby improving the energy density of the battery.

[0009] In some embodiments of this application, the number of third surfaces is two, and the two third surfaces are positioned opposite each other along the first direction, and the battery cell includes two electrode terminals with opposite polarity, and both of the two electrode terminals with opposite polarity are provided on the first surface. In this embodiment, the battery cell is provided with two third surfaces, both of which are the largest surfaces in area, and the first and second surfaces are positioned opposite each other in the third direction, and the two third surfaces are positioned opposite each other in the first direction, further improving the convenience of arranging the battery cell in the battery and meeting the mounting needs of different batteries.

[0010] In some embodiments of this application, the number of third surfaces is two, the two third surfaces are positioned opposite each other along the second direction, the second direction, the first direction and the third direction intersect twice each, the battery cell includes two electrode terminals with opposite polarity, and both of the two electrode terminals with opposite polarity are provided on the first surface. In this embodiment, the battery cell is provided with two third surfaces, both of which are the largest surfaces in area, the first surface and the second surface are positioned opposite each other in the third direction, and the two third surfaces are positioned opposite each other in the second direction, further improving the convenience of arranging the battery cell in the battery and meeting the mounting needs of different batteries.

[0011] In some embodiments of this application, the number of third surfaces is one, the battery cell includes two electrode terminals with opposite polarity, one of the two electrode terminals with opposite polarity is provided on the first surface, and the case of the battery cell constitutes the other of the two electrode terminals with opposite polarity. In this embodiment, the battery cell is provided with one third surface, which is the surface with the largest area, the first surface and the second surface are positioned opposite each other in the third direction, further improving the convenience of the battery cell's placement in the battery and meeting the mounting needs of different batteries.

[0012] In some embodiments of this application, the battery cell further has a third surface, the third surface being the surface with the largest area of ​​the battery cell, the third surface being positioned along the third direction and intersecting the horizontal plane, and the first surface, the second surface and the third surface intersecting twice each. In this embodiment, by positioning the first surface, the second surface and the third surface to intersect twice each, the second surface is connected to the housing, the electrode terminals are provided on the first surface, and the battery is easily repaired and detected without separating the battery cell from the housing after opening the housing.

[0013] In some embodiments of this application, the number of first surfaces is two, the two first surfaces are arranged opposite each other along the first direction, and the battery cell includes two electrode terminals with opposite polarity. Here, the two electrode terminals with opposite polarities are each provided on one of the first surfaces, or the two electrode terminals with opposite polarities are each provided on two of the first surfaces.

[0014] In this embodiment, two first surfaces are provided, and the two first surfaces are positioned opposite each other in a first direction. Two electrode terminals with opposite polarities may be simultaneously positioned on one first surface, or each may be positioned on both first surfaces. This improves the convenience of the electrode terminal arrangement and satisfies the need for battery diversity, while ensuring good convenience for battery repair and detection.

[0015] In some embodiments of this application, the number of first surfaces is two, the two first surfaces are positioned opposite each other along the second direction, the second direction, the first direction and the third direction intersect twice each, and the battery cell includes two electrode terminals with opposite polarity. Here, the two electrode terminals with opposite polarities are each provided on one of the first surfaces, or the two electrode terminals with opposite polarities are each provided on two of the first surfaces.

[0016] In this embodiment, two first surfaces are provided, and the two first surfaces are positioned opposite each other in a second direction. Two electrode terminals with opposite polarities may be simultaneously positioned on one first surface, or each may be positioned on two first surfaces. This further improves the convenience of the electrode terminal arrangement and satisfies the need for battery diversity, while ensuring good convenience for battery repair and detection.

[0017] In some embodiments of this application, the second surface is the surface of the battery cell with the largest area, the area of ​​the first surface is smaller than the area of ​​the second surface, the first surface is positioned along the first direction and intersects with the second surface, the battery cell includes two of the first surfaces, the two first surfaces are positioned opposite each other along the second direction, and the second direction, the first direction and the third direction intersect twice each. The battery cell includes two electrode terminals with opposite polarity, wherein the two electrode terminals with opposite polarity are both provided on the same first surface, or the two electrode terminals with opposite polarity are each provided on two of the first surfaces.

[0018] In this embodiment, the second surface is the surface with the largest area, and the two first surfaces intersect with the second surface. The two electrode terminals, which have opposite polarities, may be installed simultaneously on one first surface or on each of the two first surfaces. This further improves the convenience of the electrode terminal arrangement and satisfies the need for battery diversity, while ensuring good convenience for battery repair and detection.

[0019] In some embodiments of this application, the second surface is the surface of the battery cell with the largest area, the area of ​​the first surface is smaller than the area of ​​the second surface, the first surface is positioned along the second direction and intersects with the second surface, the second direction, the first direction and the third direction intersect twice each, the battery cell includes two of the first surfaces, and along the first direction, the two of the first surfaces are positioned opposite each other. The battery cell includes two electrode terminals with opposite polarity, wherein the two electrode terminals with opposite polarity are both provided on the same first surface, or the two electrode terminals with opposite polarity are each provided on two of the first surfaces.

[0020] In this embodiment, the second surface is the surface with the largest area, and the two first surfaces intersect with the second surface. The two electrode terminals, which have opposite polarities, may be installed simultaneously on one first surface or on each of the two first surfaces. This further improves the convenience of the electrode terminal arrangement and satisfies the need for battery diversity, while ensuring good convenience for battery repair and detection.

[0021] In some embodiments of this application, the first surface is the surface with the largest area of ​​the battery cell. In these embodiments, the first surface is the surface with the largest area, and the electrode terminals are installed on the first surface, providing sufficient working space for repair and detection when repairing and detecting the battery, thereby further improving the convenience of repairing and detecting the battery.

[0022] In some embodiments of this application, the battery cell includes a first surface and a fourth surface positioned opposite the first surface, wherein the first surface and the fourth surface are positioned opposite each other along a first direction, the edge of the fourth surface is provided with a recess, the first surface is for mounting the electrode terminals, the electrode terminals are positioned protruding from the first surface in the second direction and corresponding to the recess.

[0023] In this embodiment, the first surface is the surface with the largest area, the fourth surface is installed, and the fourth surface and the first surface are installed facing each other in the first direction, satisfying the need for battery diversity while providing sufficient working space for repair and detection when repairing and detecting batteries.

[0024] In some embodiments of the present application, the battery cell includes the first surface and a fourth surface disposed opposite to the first surface, and the first surface and the fourth surface are disposed opposite to each other along a second direction. The second direction, the first direction, and the third direction intersect pairwise. A concave portion is provided at the edge of the fourth surface. The first surface is for installing the electrode terminal, and the electrode terminal protrudes from the first surface in the second direction and corresponds to the concave portion.

[0025] In this embodiment, the first surfaces are all the surfaces with the largest area. The fourth surface is disposed, and the fourth surface and the first surface are disposed opposite to each other in the second direction, satisfying the requirement of providing sufficient operating space for repair and detection of the battery, and further satisfying the demand for the diversity of the battery.

[0026] In some embodiments of the present application, the battery further includes a heat conduction member. The heat conduction member is disposed along the first direction, and the heat conduction member is thermally conductively connected to at least the surface of the battery cell with the largest area. In this embodiment, by thermally conductively connecting the heat conduction member to the surface of the battery cell with the largest area, the heat exchange efficiency between the battery cell and the heat conduction member is increased, and the safety problems of the battery caused by poor heat dissipation are reduced.

[0027] In some embodiments of the present application, the battery includes at least two battery assemblies. Along the second direction, both sides of the heat conduction member are thermally conductively connected to the two battery assemblies respectively. The second direction, the first direction, and the third direction intersect pairwise. In this embodiment, the battery assemblies provided in the housing are all thermally conductively connected to the heat conduction member, further ensuring sufficient heat dissipation of the battery assemblies and further reducing the safety problems of the battery caused by poor heat dissipation.

[0028] In some embodiments of the present application, the battery includes a plurality of the heat conduction members, the plurality of the heat conduction members are arranged along a second direction, and the second direction, the first direction and the third direction intersect with each other in pairs. In this embodiment, by installing a plurality of heat conduction members, the heat exchange capacity for the battery cell can be further enhanced, the battery can be maintained within a relatively safe temperature range, and the safety problems caused by poor heat dissipation can be further reduced.

[0029] In some embodiments of the present application, along the second direction, heat conduction members are respectively provided on both sides of the battery assembly, and the battery assembly is thermally conductively connected to the heat conduction members on both sides. In this embodiment, both sides of the battery assembly are respectively thermally conductively connected to the heat conduction members, the heat dissipation capacity for the battery assembly can be further enhanced, the temperature of the battery can be maintained within a relatively safe temperature range, and the safety problems caused by poor heat dissipation can be further reduced.

[0030] In some embodiments of the present application, along the second direction, the battery cell includes two opposite third surfaces, the third surface is the surface with the largest battery cell area, and the two third surfaces of the battery cell are respectively thermally conductively connected to one of the heat conduction members. In this embodiment, by installing two third surfaces with the largest area and thermally conductively connecting the two third surfaces to one heat conduction member respectively, the heat exchange efficiency between the battery cell and the heat conduction member can be further enhanced, thereby improving the heat dissipation performance of the battery cell and further reducing the safety problems of the battery caused by excessively high temperature.

[0031] In some embodiments of this application, the battery cell includes an electrode assembly, the electrode assembly includes a body and tabs protruding from the body, the tabs being electrically connected to the electrode terminals, and the projections of the heat conductor and the body overlap at least partially along a second direction, with the first, second, and third directions intersecting twice each. In this embodiment, by positioning the heat conductor and the body so as to at least partially overlap along the second direction and having an overlapping region, the body can be effectively heat-exchanged via the heat conductor, thereby improving the heat exchange effect of the battery cell.

[0032] In some embodiments of this application, along the third direction, the size of the main body is L1 and the size of the heat conductive member is L2, where 0.5 ≤ L2 / L1 ≤ 1.5.

[0033] In this embodiment, by setting the range value of L2 / L1 within the interval [0.5, 1.5], the space occupied by the heat conductive member in the third direction can be reduced, further increasing the space utilization rate of the battery.

[0034] In some embodiments of this application, along the third direction, the size of the overlapping region is L3, and 0.5 ≤ L3 / L1 ≤ 1.

[0035] In this embodiment, by setting the size of the overlapping region in a third direction, the heat exchange area between the heat conductive member and the main body can be rationally set, and the heat exchange effect of the heat conductive member on the main body can be greatly enhanced.

[0036] In some embodiments of this application, a passage for accommodating a heat exchange medium is provided within the heat conductive member. In these embodiments, the battery cell transfers heat to the heat exchange medium in the passage via the heat conductive member, and the heat exchange medium can flow through the passage. This heat exchange method is highly efficient and has a simple structure.

[0037] In some embodiments of this application, the battery further includes a current collector, the current collector being in fluid communication with the heat conductor, Here, the current collector is provided at one end of the heat conductive member located in the first direction, or the current collector is provided at both ends of the heat conductive member located in the first direction.

[0038] In this embodiment, by installing a current collector, the heat exchange medium within the heat conduction member can be concentrated, reducing the number of members and thereby improving the space utilization rate within the housing. Furthermore, when the battery is subjected to pushing or impact in a second direction, the installation position of the current collector can avoid pushing or impact, reducing the possibility of damage to the current collector. As a result, the heat exchange medium can sufficiently dissipate heat from the battery cells, further reducing safety problems for the battery due to excessive temperature.

[0039] In some embodiments of this application, there are two current collectors, the two current collectors are provided at one end of the heat conduction member located in the first direction, and the two current collectors are arranged along a third direction. In this embodiment, by providing two current collectors, the current collection performance to the heat exchange medium is improved, thereby allowing the heat exchange medium to have a good flow velocity and further improving the heat exchange capacity of the battery cell by the heat exchange medium. Furthermore, by jointly providing the two current collectors at one end in the first direction and arranging them along the third direction, the space occupied by the current collectors in the battery along the first direction can be effectively reduced, thereby facilitating the installation of other structures within the battery.

[0040] In some embodiments of this application, the battery cell further includes a pressure relief mechanism, the pressure relief mechanism being installed on any one surface of the battery cell. In these embodiments, when the battery cell experiences thermal runaway, the pressure relief mechanism can release the internal pressure of the battery cell in a timely manner, thereby avoiding safety problems such as the explosion of the battery cell.

[0041] In some embodiments of this application, the pressure relief mechanism is provided on the first surface or the second surface. In these embodiments, the installation location of the pressure relief mechanism can meet the needs of different battery cell types and further improve the safety performance of the battery.

[0042] In some embodiments of this application, the battery assembly includes at least two battery cells, the at least two battery cells being arranged along the first direction. In these embodiments, the at least two battery cells are arranged along the first direction to facilitate the layout of the battery cells within the housing.

[0043] In some embodiments of this application, the battery cell includes an electrode assembly, the electrode assembly having a wound structure and being flattened, the outer surface of the electrode assembly includes two flattened planes, the two flattened planes facing each other along a second direction, Alternatively, the electrode assembly has a laminated structure, and the first electrode plate, separator and second electrode plate of the electrode assembly are laminated along a second direction. The second direction, the first direction, and the third direction intersect twice each.

[0044] In this embodiment, the electrode assembly is installed in a wound and flattened shape, and the outer surface of the electrode assembly includes two flattened surfaces, the two flattened surfaces facing each other along a second direction, or the electrode assembly is made into a stacked structure, thereby reducing the space occupied by the electrode assembly in the first direction and facilitating the layout and mounting of other components of the battery in the first direction.

[0045] In some embodiments of this application, the maximum size of the battery cell is L along the first direction, and the maximum size of the battery cell is D along the second direction, with the second direction, the first direction, and the third direction intersecting twice each, where the range value of L / D is 1 to 30. In these embodiments, the power output of the battery cell can be maximized by setting the size of the battery cell in the first and second directions.

[0046] In some embodiments of this application, the maximum size of the battery cell along the first direction is L, and the maximum size of the battery cell along the third direction is H, with the L / H ratio being between 0.5 and 6. In these embodiments, the power output of the battery cells can be maximized by arranging the battery cells according to the above size ratio.

[0047] In some embodiments of this application, the housing includes a first part and a second part, the first part and the second part being connected in a detachable manner, the number of second surfaces being at least one, and at least one of the second surfaces being bonded to the first part or the second part. In these embodiments, the convenience in the assembly process is improved by positioning the second surface to be bonded and fixed to the first part or the second part of the housing. Furthermore, the bond strength of the adhesive fixation is high, and the stability of the battery cell within the housing can be effectively ensured.

[0048] In some embodiments of this application, the number of second surfaces is two, the two second surfaces are positioned opposite each other, the first portion is bonded to one of the second surfaces, and the second portion is bonded to the other of the second surfaces. In this embodiment, by setting two second surfaces and bonding and fixing the two second surfaces to the first and second portions of the housing, respectively, the connection strength between the battery cell and the housing is further improved, and the stability of the battery cell within the housing is further improved.

[0049] In some embodiments of this application, the second surface is fixedly connected to the first and / or second portion via a first adhesive layer, the battery further includes a thermal conductive member, the thermal conductive member is thermally conductively connected to the largest surface area of ​​the battery cell via a second adhesive layer, and the thermal conductivity of the first adhesive layer is less than or equal to the thermal conductivity of the second adhesive layer. In this embodiment, the first adhesive layer is used to connect the second surface to the housing, and the second adhesive layer is used to thermally conductively connect the largest surface area of ​​the battery cell to the thermal conductive member. Therefore, by setting the thermal conductivity of the first adhesive layer to less than or equal to the thermal conductivity of the second adhesive layer, it is ensured that the battery cell dissipates heat more effectively through the thermal conductive member.

[0050] In some embodiments of this application, the range of the ratio between the thermal conductivity of the first adhesive layer and the thermal conductivity of the second adhesive layer is 0.1 to 1. In these embodiments, setting the above ratio range allows for effective heat dissipation from the battery cell via the heat conductive member.

[0051] In some embodiments of this application, the battery further includes a baffle, the baffle being positioned in the third direction opposite to the first surface on which the electrode terminals of the battery cell are provided, and the distance between the electrode terminals and the baffle is 1.2 mm to 25 mm. In this embodiment, by setting the distance between the baffle and the electrode terminals to 1.2 mm to 25 mm, damage to the electrode terminals due to impact between the baffle and the electrode terminals can be prevented when the battery is subjected to impact in the second direction.

[0052] A second aspect of this application proposes a power-consuming device comprising the battery described above, the battery being used to provide electrical energy to drive the power-consuming device.

[0053] In some embodiments of this application, when the longitudinal direction of the battery and the direction of travel of the power-consuming device are different, the first direction is the direction of travel of the power-consuming device.

[0054] In this embodiment, the first direction is set to the direction of travel of the power-consuming device, and the third direction intersects both the first direction and the horizontal direction. The battery cells located inside the battery housing have a first surface and a second surface, with electrode terminals installed on the first surface and the second surface connected to the housing. The setting of the first direction facilitates the installation and layout of the battery in the power-consuming device, and the arrangement of the battery cells inside the housing can be adjusted to meet the usage needs of different power-consuming devices.

[0055] The above description is merely an outline of the proposed technology of this application. In order to provide a clearer understanding of the technical means of this application, and to make the other objectives, features, and advantages of this application clearer and easier to understand, the following will describe specific embodiments of this application in particular. [Brief explanation of the drawing]

[0056] [Figure 1] A schematic diagram of the structure of a vehicle according to one embodiment of this application is shown. [Figure 2] A schematic diagram of the disassembled structure of a battery according to one embodiment of this application is shown. [Figure 3] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 4] A schematic diagram of the disassembled structure of a battery cell according to one embodiment of this application is shown. [Figure 5] A schematic diagram of the disassembled structure of a battery according to one embodiment of this application is shown. [Figure 6] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 7] Figure 6 is a schematic diagram of the battery cell structure in the battery assembly shown. [Figure 8] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 9] Figure 8 is a schematic diagram of the battery cell structure in the battery assembly shown. [Figure 10] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 11] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 12] Figures 10 and 11 show schematic diagrams of the battery cell structure in the battery assembly. [Figure 13] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 14] Figure 13 is a schematic diagram of the structure of a battery cell in the battery assembly shown. [Figure 15] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 16] Figure 15 is a schematic diagram of the structure of a battery cell in the battery assembly shown. [Figure 17] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 18] Figure 17 is a schematic diagram of the battery cell structure in the battery assembly shown. [Figure 19] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 20] Figure 19 is a schematic diagram of the battery cell structure in the battery assembly shown. [Figure 21] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 22] Figure 21 is a schematic diagram of the battery cell structure in the battery assembly shown. [Figure 23] A schematic diagram of the structure of a battery assembly according to one embodiment of this application is shown. [Figure 24] Figure 23 is a schematic diagram of the battery cell structure in the battery assembly shown. [Figure 25] A schematic diagram of the structure of a heat-conducting member according to one embodiment of this application is shown. [Figure 26]A schematic diagram of the structure of the second part of the housing according to one embodiment of this application is shown. [Figure 27] A schematic diagram of the structure of a battery according to one embodiment of this application (the first part of the housing is not shown) is schematically shown. [Figure 28] Figure 27 is a schematic diagram of the enlarged structure of part A in the structure shown. [Figure 29] This is a cross-sectional view of the BB section in the structure shown in Figure 27. [Figure 30] Figure 29 is a schematic diagram of the enlarged structure of section C in the structure shown. [Figure 31] This is a cross-sectional view of the structure shown in Figure 27. [Figure 32] This is a schematic diagram of the enlarged structure of part D in the structure shown in Figure 31. [Figure 33] This is a schematic diagram of the battery distribution structure in a vehicle according to one embodiment of this application. [Modes for carrying out the invention]

[0057] The following describes in detail embodiments of the technical proposal of this application, accompanied by drawings. The following embodiments are provided solely to clarify the technical proposal of this application and are merely examples; they do not limit the scope of protection of this application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art relating to the present application. The terms used herein are solely for the purpose of describing specific embodiments and are not intended to limit this application. The terms “including” and “having” and any variations thereof in the description of the specification, claims, and drawings of this application are intentionally intended to cover the non-exclusive “including.”

[0059] In the descriptions of the embodiments of this application, technical terms such as "first," "second," etc., are used solely to distinguish different subjects and should not be understood as indicating or implying relative importance, or implicitly indicating the number, specific order, or hierarchical relationship of the technical features being referred to. In the descriptions of the embodiments of this application, "multiple" means two or more unless otherwise specified.

[0060] The “Examples” as used herein mean that certain features, structures, or characteristics described in conjunction with the Examples may be included in at least one Example of this Application. The appearance of this phrase at each location in the Specification does not necessarily refer to the same Example, nor does it mean that each Example is mutually exclusive or alternative to the others. Those skilled in the art will understand, both explicitly and implicitly, that the Examples described herein can be combined with other Examples.

[0061] In the description of the embodiments of this application, the term "and / or" simply describes a related relationship between related objects, indicating that three relationships may exist. For example, A and / or B may represent three cases: A alone, a combination of A and B, or B alone. In this specification, the letter " / " generally indicates that the preceding and succeeding related objects are in an "or" relationship.

[0062] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more sets (including two sets), and "multiple sheets" refers to two or more sheets (including two sheets).

[0063] In the description of the embodiments of this application, the orientations or positional relationships indicated by technical terms such as "center," "vertical direction," "horizontal direction," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" are orientations or positional relationships shown based on the drawings. These are for the convenience and simplification of the description of the embodiments of this application and do not indicate or imply that the mentioned devices or elements have a specific orientation or must be configured and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of this application.

[0064] In the description of the embodiments of this application, unless otherwise explicitly defined or limited, technical terms such as "attachment," "connection," "bonding," and "fixing" should be understood in a broad sense. For example, a fixed connection may be a detachable connection or a joint; a mechanical connection may be an electrical connection; a direct connection may be an indirect connection through an intermediate medium; or it may be internal communication between two elements or an interaction relationship between two elements. Those skilled in the art will be able to understand the specific meaning of the above terms in the embodiments of this application depending on the specific circumstances.

[0065] Currently, given the development of the market, the applications of power batteries are expanding more and more. Power batteries are not only used in energy storage and power systems such as hydroelectric, thermal, wind, and solar power plants, but are also widely used in electric transportation tools such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. Along with the continuous expansion of the application fields of power batteries, the market demand is also constantly increasing.

[0066] The applicant notes that conventional power batteries generally include a housing and a battery cell, and the battery cell is located inside the housing and fixed to the housing by an upper and lower viscose system, with electrode terminals exposed at the top and bottom. For battery cells with this viscose fixing system, the viscose fixing system is not convenient for battery repair and detection. Therefore, the problem of how to solve the issue of battery cells with exposed electrode terminals at the top and bottom being inconvenient for battery repair and detection is a technical problem that those skilled in the art should solve as soon as possible.

[0067] To solve the problem that battery cells with exposed electrode terminals on the top and bottom are inconvenient for battery repair and detection, according to the inventor's research, a first surface and a second surface are installed on the battery cell, with the second surface positioned to intersect with a third direction (the third direction intersects with both the first direction and the horizontal direction). Here, the electrode terminals are installed on the first surface, and the second surface is connected to the housing. As a result, there are no electrode terminals on the connection surface between the battery cell and the housing, and the electrode terminals can be easily exposed to the outside after the housing is opened, thereby improving the convenience of battery repair and detection.

[0068] The battery cell according to the embodiment of this application may be used in power consumption devices such as vehicles, ships, or aircraft, but is not limited to them. A power supply system comprising the battery cell, battery, etc. according to this application may also be used to constitute this power consumption device.

[0069] In the embodiments of this application, the power consumption device that uses a battery as a power source may be, but is not limited to, a mobile phone, tablet, laptop computer, electric toy, power tool, battery car, electric vehicle, steamship, or aerospace aircraft. Here, electric toys may include stationary or portable electric toys, such as game consoles, electric vehicle toys, electric steamship toys and electric airplane toys, and aerospace aircraft may include airplanes, rockets, space shuttles and spacecraft.

[0070] It should be understood that the technical solutions described in the embodiments of this application are not limited to those applicable to the batteries and power-consuming devices described above, but may be applicable to all batteries and power-consuming devices that use batteries, including housings. However, for the sake of brevity, the embodiments described below will be explained using an electric vehicle as an example.

[0071] Referring to Figure 1, which is a schematic diagram of the structure of a vehicle 1 according to some embodiments of the present application, the vehicle 1 may be a fuel-powered vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle. Inside the vehicle 1, a battery 10 is installed, which may be installed at the bottom, head, or tail of the vehicle 1. The battery 10 may be used to power the vehicle 1, for example, the battery 10 may be used as the operating power source for the vehicle 1. The vehicle 1 may further include a controller 11 and a motor 12, the controller 11 being used to control the battery 10 to supply power to the motor 12, for example, to meet the operating power consumption requirements for starting the vehicle 1, navigation, and driving.

[0072] In some embodiments of this application, the battery 10 may be used not only as an operating power source for the vehicle 1, but also as a drive power source for the vehicle 1, providing driving power to the vehicle 1 in place of or in place of fuel or natural gas.

[0073] To meet different power consumption demands, the battery 10 may include multiple battery cells, where a battery cell is the smallest unit constituting a battery assembly or battery pack. Multiple battery cells may be connected in series and / or parallel via electrode terminals for use in various applications. The battery 10 referred to in this application includes a battery assembly or battery pack, where multiple battery cells may be connected in series, parallel, or series-parallel, where series-parallel is a mixture of series and parallel connections. The battery 10 may also be called a battery pack. In the embodiments of this application, multiple battery cells may directly constitute a battery pack, or they may first constitute a battery assembly, and the battery assembly may further constitute a battery pack.

[0074] Figure 2 shows a schematic diagram of the structure of a battery 10 according to one embodiment of the present application. In Figure 2, the battery 10 may include a plurality of battery assemblies 20 and a housing 30, the plurality of battery assemblies 20 being housed inside the housing 30. The housing 30 is used to house the battery cells 21 or the battery assemblies 20 and to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells. The housing 30 may be a simple three-dimensional structure such as a single rectangular parallelepiped, cylindrical or sphere, or a complex three-dimensional structure composed of a combination of simple three-dimensional structures such as rectangular parallelepipeds, cylindrical or spheres, and the embodiments of the present application are not limited thereto. The material of the housing 30 may be an alloy material such as an aluminum alloy or an iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam plastic, or a composite material of glass fiber with epoxy resin, and the embodiments of the present application are not limited thereto.

[0075] In some embodiments, as shown in Figure 2, the housing 30 may include a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 overlapping each other, and jointly defining a space for housing the battery cell 21. The second portion 32 may be a hollow structure with one end open, and the first portion 31 may be a plate-like structure, the first portion 31 overlapping the open side of the second portion 32 so that the first portion 31 and the second portion 32 jointly define a space for housing the battery cell 21, and both the first portion 31 and the second portion 32 may be hollow structures with one end open, the open side of the first portion 31 overlapping the open side of the second portion 32.

[0076] Figure 3 shows a schematic diagram of the structure of a battery assembly 20 according to one embodiment of this application. In Figure 3, the battery assembly 20 may include a plurality of battery cells 21, and the plurality of battery cells 21 may first be connected in series, in parallel, or in series-parallel to constitute the battery assembly 20, and the plurality of battery assemblies 20 may be further connected in series, in parallel, or in series-parallel to constitute a battery. In this application, the battery cells 21 may include lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, and the embodiments of this application are not limited thereto. The battery cells 21 may have cylindrical, flattened, rectangular parallelepiped, or other shapes, and the embodiments of this application are not limited thereto. Generally, battery cells 21 are divided into three types based on the packaging method: cylindrical battery cells, rectangular parallelepiped battery cells, and pouch battery cells, and the embodiments of this application are not limited thereto.

[0077] Figure 4 shows a schematic diagram of the structure of a battery cell 21 according to one embodiment of this application. The battery cell 21 includes a case 211, an end cap 212, and an electrode assembly 213.

[0078] The end cap 212 is a component that is placed over the opening of the case 211 to isolate the internal environment of the battery cell 21 from the external environment. While not limited to this, the shape of the end cap 212 may be adapted to the shape of the case 211 so as to fit into the case 211. Selectively, the end cap 212 may be made of a material having a certain hardness and strength (e.g., an aluminum alloy). In this way, the end cap 212 is less likely to deform when subjected to an extrusion impact, allowing the battery cell 21 to have higher structural strength and improving safety performance. The material of the end cap 212 can vary and may be, for example, copper, iron, aluminum, stainless steel, aluminum alloy, or plastic, and the embodiments of this application are not particularly limited thereto. In some embodiments, an insulating member may be installed inside the end cap 212. The insulating member may be used to isolate electrical connection members within the case 211 from the end cap 212, thereby reducing the risk of short circuits. Exemplarily, the insulating member may be plastic, rubber, or the like.

[0079] The case 211 is an assembly for fitting the end cap 212 to form the internal environment of the battery cell 21, which may be used to house the electrode assembly 213, electrolyte, and other components. The case 211 and the end cap 212 may be separate components, or the internal environment of the battery cell 21 may be formed by providing an opening in the case 211 and placing the end cap 212 over the opening. The end cap 212 and the case 211 may be integrated, and more specifically, the end cap 212 and the case 211 may first form a common connection surface before other components enter the case, and then the end cap 212 may be placed over the case 211 when it is necessary to package the inside of the case 211. The case 211 may be of various shapes and sizes, for example, a rectangular parallelepiped, cylindrical, or hexagonal tube. Specifically, the shape of the case 211 may be determined according to the specific shape and size of the battery core assembly. The material of case 211 can vary and may be, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of this application are not particularly limited thereto.

[0080] In some embodiments of this application, as shown in Figures 5 to 33, the application proposes a battery 10 comprising a housing 30 and a battery assembly 20, the battery assembly 20 being housed within the housing 30, the battery assembly 20 comprising at least one battery cell 21, the battery assembly 20 being positioned along a first direction, the first direction being the longitudinal direction of the battery 10 or the direction of travel of a power-consuming device having the battery 10, the battery cell 21 having a first surface 216 and a second surface 217, the first surface 216 being provided with electrode terminals 214, the second surface 217 being connected to the housing 30, the second surface 217 intersecting a third direction, the third direction intersecting both the first direction and the horizontal plane.

[0081] When the battery 10 is used in a power-consuming device, taking the example that the power-consuming device is a vehicle 1, the vehicle 1 can move by being driven by the battery 10, and the battery assembly 20 that constitutes the battery 10 is installed along a first direction, and this first direction may be the direction of travel of the vehicle 1, that is, the battery assembly 20 is installed along the direction of travel of the vehicle 1. In addition, in this application, the battery 10 has a rectangular structure, and the battery 10 having a rectangular structure has a longitudinal direction, a width direction and a height direction, and the battery assembly 20 located inside the housing 30 is installed along a first direction, and this first direction may be the longitudinal direction of the battery 10.

[0082] As shown in Figure 5, in Figure 5, the housing 30 may include a first portion 31 and a second portion 32, the second portion 32 may be a hollow structure with one end open, and the first portion 31 may be a plate-like structure, and the first portion 31 is placed over the open side of the second portion 32 so that the first portion 31 and the second portion 32 jointly define a space for housing the battery cell 21. When it is necessary to repair or detect the battery 10, the mating relationship between the first portion 31 and the second portion 32 is released, and the first portion 31 and the second portion 32 are further separated, thereby exposing the battery cell 21 to the outside, and thus enabling repair and detection of the battery 10.

[0083] In this application, the battery cells 21 are installed inside the housing 30, and the number of battery cells 21 may be one or more. As shown in Figure 5, in Figure 5 the number of battery cells 21 is greater than two, and the multiple battery cells 21 are installed side by side in the first direction.

[0084] Specifically, the battery cell 21 has a first surface 216 and a second surface 217, and the second surface 217 is positioned to intersect with a third direction (the third direction intersects with both the first direction and the horizontal direction). Here, electrode terminals 214 are installed on the first surface 216, and the second surface 217 is connected to the housing 30. As a result, there are no electrode terminals 214 on the connection surface between the battery cell 21 and the housing 30, making it easy for the electrode terminals 214 to be sufficiently exposed to the outside after opening the housing 30. This facilitates the repair and detection of the battery 10 without separating the battery cell 21 and the housing 30 after opening the housing 30, thereby improving the convenience of repairing and detecting the battery 10.

[0085] In some embodiments of this application, the longitudinal direction of the battery 10 is parallel to or intersects with the direction of travel of the power-consuming device.

[0086] In this application, the direction of travel of a power-consuming device means that the power-consuming device can undergo relative displacement, and this relative displacement may be forward or backward. When the longitudinal direction of the battery 10 is parallel to the direction of travel of the power-consuming device, the longitudinal direction of the battery 10 is installed along the direction of travel of the power-consuming device, and when the longitudinal direction of the battery 10 intersects with the direction of travel of the power-consuming device, the longitudinal direction of the battery 10 is installed at an angle with the direction of travel of the power-consuming device, and this angle is not equal to 0.

[0087] Specifically, by setting the relationship between the longitudinal direction of the battery 10 and the direction of travel of the power-consuming device, the battery 10 can be attached to the power-consuming device according to the device's needs, thereby improving the convenience of placing the battery 10 in the power-consuming device.

[0088] In some embodiments of this application, along a third direction, the first surface 216 is positioned opposite the second surface 217, and the battery cell 21 further has a third surface 218, the third surface 218 being the surface with the largest area of ​​the battery cell 21, the third surface 218 being positioned along a third direction, intersecting the horizontal plane, and the third surface 218 being connected to the first surface 216 and the second surface 217.

[0089] In this application, the battery cell 21 has multiple surfaces, where the third surface 218 is the surface with the largest area among the multiple surfaces, that is, the area of ​​all other surfaces of the battery cell 21 is smaller than the area of ​​the third surface 218.

[0090] Specifically, the third surface 218 is positioned along a third direction and intersects the horizontal plane, and the first surface 216 and the second surface 217 are positioned opposite each other in the third direction, that is, the first surface 216 and the second surface 217 are positioned parallel to each other with a gap between them. By positioning the first surface 216 and the second surface 217 opposite each other in the third direction, and positioning the electrode terminals 214 on the first surface 216, that is, the battery cell 21 exposes the electrode terminals 214 in the vertical direction (third direction), when repairing or detecting the battery 10, the housing 30 can be opened, the second surface 217 of the battery cell 21 connects to the housing 30 of the battery 10, and the electrode terminals 214 on the first surface 216 can be exposed to the outside. After opening the housing 30, repair and detection of the battery 10 can be facilitated without separating the battery cell 21 and the housing 30, further improving the convenience of repairing and detecting the battery 10.

[0091] Furthermore, the third surface 218 has the largest area, while the area of ​​the second surface 217 is smaller than that of the third surface 218. This allows the housing 30 to connect more battery cells 21 per unit area, thereby improving the energy density of the battery 10.

[0092] It should be noted that, as shown in Figures 6 to 12, in this application, the first and second directions are both located in the horizontal plane, and the third direction is located in the vertical plane, and the first, second, and third directions are each set up perpendicularly in pairs. Here, the first direction is the direction of travel of the power consuming device, the second direction is perpendicular to the direction of travel of the power consuming device, and the third direction is perpendicular to both the first and second directions.

[0093] In some embodiments of this application, the number of third surfaces 218 is two, and the two third surfaces 218 are arranged opposite each other along the first direction, and the battery cell 21 includes two electrode terminals 214 with opposite polarity, and both of the two electrode terminals 214 with opposite polarity are provided on the first surface 216.

[0094] In this embodiment, as shown in Figures 8 and 9, the battery cell 21 has a first surface 216, a second surface 217, and two third surfaces 218, where the first surface 216 and the second surface 217 are positioned opposite each other in a third direction, and the two third surfaces 218 are positioned opposite each other in a first direction, thereby forming a rectangular housing battery cell.

[0095] Specifically, the battery cell 21 is equipped with two third surfaces 218, both of which are the largest surfaces in area. The first surface 216 and the second surface 217 are positioned opposite each other in a third direction, while the two third surfaces 218 are positioned opposite each other in a first direction. This further improves the convenience of positioning the battery cell 21 within the battery 10 and meets the mounting needs of different batteries 10.

[0096] It should be understood that the structure of the rectangular housing battery cell is installed inside the housing 30, and the large surface of the rectangular housing battery cell (the surface with the largest area, i.e., the third surface 218) intersects with the first direction, improving the space utilization rate inside the housing 30 and improving the energy density of the battery 10. In addition, it facilitates the layout of the rectangular housing battery cell inside the housing 30 and allows the rectangular housing battery cell to meet the mounting needs of different batteries 10.

[0097] It should be noted that when the battery cell 21 is a rectangular housing battery cell, the first surface 216 and the second surface 217 form the top and bottom surfaces of the rectangular housing battery cell, respectively. That is, one of the first surface 216 and the second surface 217 is the top surface of the rectangular housing battery cell, and the other of the first surface 216 and the second surface 217 is the bottom surface of the rectangular housing battery cell. The two electrode terminals 214, which have opposite polarities, are both located on the first surface 216. As a result, the rectangular housing battery cell has a structure in which the electrode terminals 214 are exposed either on top or on the bottom. When repairing and detecting the battery 10, the convenience of repairing and detecting the battery 10 can be improved by opening the housing 30 in the vertical direction.

[0098] In some embodiments of this application, the number of third surfaces 218 is two, and the two third surfaces 218 are positioned opposite each other along the second direction, and the second direction, the first direction and the third direction intersect twice each, and the battery cell 21 includes two electrode terminals 214 with opposite polarity, and both of the two electrode terminals 214 with opposite polarity are provided on the first surface 216.

[0099] In this embodiment, as shown in Figures 6 and 7, the battery cell 21 has a first surface 216, a second surface 217, and two third surfaces 218, where the first surface 216 and the second surface 217 are positioned opposite each other in a third direction, and the two third surfaces 218 are positioned opposite each other in a second direction, thereby forming a rectangular housing battery cell.

[0100] Specifically, the battery cell 21 is provided with two third surfaces 218, both of which are the largest surfaces in area. The first surface 216 and the second surface 217 are positioned opposite each other in a third direction, and the two third surfaces 218 are positioned opposite each other in a second direction, further improving the convenience of arranging the rectangular housing battery cell within the battery 10 and meeting the mounting needs of different batteries 10.

[0101] It should be understood that the structure of the rectangular housing battery cell is installed inside the housing 30, and the large surface of the rectangular housing battery cell (the surface with the largest area, i.e., the third surface 218) intersects with the second direction, which not only improves the space utilization rate inside the housing 30 and improves the energy density of the battery 10, but also facilitates the layout of the rectangular housing battery cell inside the housing 30 and allows the battery cell 21 to meet the mounting needs of different batteries 10.

[0102] It should be noted that when the battery cell 21 is a rectangular housing battery cell, the first surface 216 and the second surface 217 form the top and bottom surfaces of the rectangular housing battery cell, respectively. That is, one of the first surface 216 and the second surface 217 is the top surface of the rectangular housing battery cell, and the other of the first surface 216 and the second surface 217 is the bottom surface of the rectangular housing battery cell. The two electrode terminals 214, which have opposite polarities, are both located on the first surface 216. As a result, the rectangular housing battery cell has a structure in which the electrode terminals 214 are exposed either on top or on the bottom. When repairing and detecting the battery 10, the convenience of repairing and detecting the battery 10 can be improved by opening the housing 30 in the vertical direction.

[0103] In some embodiments of this application, the number of third surfaces 218 is one, the battery cell 21 includes two electrode terminals 214 with opposite polarity, one of which is provided on the first surface 216, and the case 211 of the battery cell 21 constitutes the other of the two electrode terminals 214 with opposite polarity.

[0104] In this embodiment, as shown in Figures 10 to 12, the battery cell 21 has a first surface 216, a second surface 217, and a third surface 218, where the first surface 216 and the second surface 217 are positioned opposite each other in a third direction, and the third surface 218 is positioned in a third direction and intersects with the horizontal plane, thereby forming a cylindrical battery cell.

[0105] Specifically, the battery cell 21 is equipped with a third surface 218, which is the largest surface area, and the first surface 216 and the second surface 217 are positioned opposite each other in a third direction, further improving the convenience of positioning the battery cell 21 within the battery 10 and meeting the mounting needs of different batteries 10.

[0106] It should be understood that the cylindrical battery cell structure is installed inside the housing 30, and the largest surface of the cylindrical battery cell (the surface with the largest area, i.e., the third surface 218) is the outer surface of the cylindrical battery cell. By installing the battery cell 21 in a cylindrical battery cell, the layout and installation of the battery cell 21 inside the housing 30 is facilitated, improving the utilization rate of the space inside the housing 30, and also improving the energy density of the battery 10.

[0107] It should be noted that when the battery cell 21 is a cylindrical battery cell, the first surface 216 and the second surface 217 form the top and bottom surfaces of the cylindrical battery cell, respectively. That is, one of the first surface 216 and the second surface 217 is the top surface of the cylindrical battery cell, and the other of the first surface 216 and the second surface 217 is the bottom surface of the cylindrical battery cell. One of the two electrode terminals 214, which have opposite polarities, is installed on the first surface 216, and the case 211 of the cylindrical battery cell constitutes the other electrode terminal 214. As a result, the cylindrical battery cell has a structure in which the electrode poles are exposed at the top or the electrode terminals 214 are exposed at the bottom. When repairing and detecting the battery 10, the convenience of repairing and detecting the battery 10 can be improved by opening the housing 30 in the vertical direction.

[0108] In some embodiments of this application, the battery cell 21 further has a third surface 218, the third surface 218 being the surface with the largest area of ​​the battery cell 21, the third surface 218 being positioned along a third direction and intersecting the horizontal plane, and the first surface 216, the second surface 217 and the third surface 218 intersect twice each.

[0109] Specifically, as shown in Figures 17 to 20, the first surface 216 intersects with the second surface 217 and the third surface 218, respectively. The second surface 217 intersects with the third direction, and the second surface 217 constitutes the top or bottom surface of the battery cell 21. The first surface 216 and the third surface 218 constitute the outer circumferential surface of the battery cell 21. The electrode terminals 214 are installed on the first surface 216, and the second surface 217 is connected to the housing 30 of the battery 10. When repairing and detecting the battery 10, the housing 30 of the battery 10 can be opened, and the first surface 216 with the electrode terminals 214 can be exposed to the outside without separating the second surface 217 from the housing 30. This facilitates repair and detection of the battery 10 using the electrode terminals 214, thereby improving the convenience of repairing and inspecting the battery 10.

[0110] It should be understood that the second surface 217 is connected to the housing 30, the first surface 216 is installed adjacent to the second surface 217, the electrode terminals 214 are installed on the first surface 216, and even when the second surface 217 is connected to the housing 30, the electrode terminals 214 are not shielded, thereby effectively enabling the repair and detection of the battery 10 by the electrode terminals 214.

[0111] In some embodiments of this application, the number of first surfaces 216 is two, and the two first surfaces 216 are arranged opposite each other along a first direction, and the battery cell 21 includes two electrode terminals 214 with opposite polarity, where the two electrode terminals 214 with opposite polarity are each provided on one first surface 216, or the two electrode terminals 214 with opposite polarity are each provided on two first surfaces 216.

[0112] Specifically, as shown in Figures 17 and 18, the third surface 218 is the surface with the largest area of ​​the battery cell 21, and the first surface 216, the second surface 217, and the third surface 218 intersect in pairs. Here, there are two first surfaces 216, and the two first surfaces 216 are positioned opposite each other in the first direction. With the two first surfaces 216 positioned opposite each other in the first direction, the two electrode terminals 214 with opposite polarity may be installed simultaneously on one first surface 216, or each may be installed on two first surfaces 216. This improves the convenience of the arrangement of the electrode terminals 214 and satisfies the need for versatility in the battery 10, while ensuring that the repair and detection of the battery 10 is convenient.

[0113] In some embodiments of this application, the number of first surfaces 216 is two, and the two first surfaces 216 are positioned opposite each other along a second direction, and the second direction, the first direction and the third direction intersect twice each, and the battery cell 21 includes two electrode terminals 214 with opposite polarity, where the two electrode terminals 214 with opposite polarity are each provided on one first surface 216, or the two electrode terminals 214 with opposite polarity are each provided on two first surfaces 216.

[0114] Specifically, as shown in Figures 19 and 20, the third surface 218 is the surface with the largest area of ​​the battery cell 21, and the first surface 216, the second surface 217, and the third surface 218 intersect in pairs, where there are two first surfaces 216, and the two first surfaces 216 are positioned opposite each other in the second direction. With the two first surfaces 216 positioned opposite each other in the second direction, the two electrode terminals 214 with opposite polarity may be installed simultaneously on one first surface 216, or each may be installed on two first surfaces 216, further improving the convenience of the arrangement of the electrode terminals 214 and further meeting the need for versatility of the battery 10, while ensuring that the repair and detection of the battery 10 is convenient.

[0115] In some embodiments of this application, the second surface 217 is the surface of the battery cell 21 with the largest area, the area of ​​the first surface 216 is smaller than the area of ​​the second surface 217, the first surface 216 is positioned along a first direction and intersects with the second surface 217, the battery cell 21 includes two first surfaces 216, the two first surfaces 216 are positioned opposite each other along a second direction, and the second direction, the first direction and the third direction intersect twice each. The battery cell 21 includes two electrode terminals 214 with opposite polarity, the two electrode terminals 214 with opposite polarity are both provided on the same first surface 216, or the two electrode terminals 214 with opposite polarity are each provided on two first surfaces 216.

[0116] Specifically, as shown in Figures 21 and 22, the second surface 217 connects to the housing 30 of the battery cell 21. The second surface 217 is the largest surface area, thereby increasing the contact area between the second surface 217 and the housing 30, and further improving the connection strength and stability between the battery cell 21 and the housing 30.

[0117] Furthermore, the first surface 216 and the second surface 217 are positioned to intersect, and the electrode terminals 214 are located on the first surface 216. The surface connected to the housing 30 does not have electrode terminals 214, thereby facilitating the complete exposure of the electrode terminals 214 after opening the housing 30, and further improving the convenience of repairing and detecting the battery 10.

[0118] Furthermore, the two first surfaces 216 are positioned opposite each other in a second direction and each intersects with a second surface 217. The two electrode terminals 214, which have opposite polarity, may be installed simultaneously on one first surface 216 or on both first surfaces 216. This further improves the convenience of the arrangement of the electrode terminals 214 and satisfies the need for versatility in the battery 10, while ensuring that the battery 10 has good repair and detection convenience.

[0119] In some embodiments of this application, the second surface 217 is the surface of the battery cell 21 with the largest area, the area of ​​the first surface 216 is smaller than the area of ​​the second surface 217, the first surface 216 is positioned along the second direction and intersects with the second surface 217, the second direction, the first direction and the third direction intersect twice each, the battery cell 21 includes two first surfaces 216, the two first surfaces 216 are positioned opposite each other along the first direction. The battery cell 21 includes two electrode terminals 214 with opposite polarity, both of which are located on the same first surface 216, or one of the two electrode terminals 214 with opposite polarity is located on one first surface 216 and the other is located on the other first surface 216.

[0120] Specifically, as shown in Figures 23 and 24, the second surface 217 connects to the housing 30 of the battery cell 21. The second surface 217 is the largest surface area, thereby increasing the contact area between the second surface 217 and the housing 30, and further improving the connection strength and stability between the battery cell 21 and the housing 30.

[0121] Furthermore, the first surface 216 and the second surface 217 are positioned to intersect, and the electrode terminals 214 are located on the first surface 216. The surface connected to the housing 30 does not have electrode terminals 214, thereby facilitating the complete exposure of the electrode terminals 214 after opening the housing 30, and further improving the convenience of repairing and detecting the battery 10.

[0122] Furthermore, the two first surfaces 216 are positioned opposite each other in the first direction and each intersects with the second surface 217, and the two electrode terminals 214, which have opposite polarity, may be installed simultaneously on one first surface 216 or on each of the two first surfaces 216, thereby further improving the convenience of the arrangement of the electrode terminals 214 and further meeting the need for versatility of the battery 10, while ensuring that the battery 10 has good convenience for repair and detection.

[0123] In some embodiments of this application, the first surface 216 is the surface with the largest area of ​​the battery cell 21.

[0124] Specifically, as shown in Figures 13 to 16, the first surface 216 is a part of the surfaces that make up the battery cell 21, where the battery cell 21 has multiple surfaces, and the area of ​​the first surface 216 is the largest. By placing the electrode terminals 214 on the first surface 216, sufficient working space can be provided for repair and detection when repairing and detecting the battery 10, further improving the convenience of repairing and detecting the battery 10.

[0125] It should be noted that when there are multiple battery cells 21, the electrode terminals 214 of one of two adjacent battery cells 21 are positioned to correspond to the recesses of the other battery cell 21. By utilizing the interlocking structure, the combined structure formed by the two adjacent battery cells 21 can be made more compact, thereby improving the space utilization rate of the housing 30 and effectively increasing the energy density of the battery 10.

[0126] In some embodiments of this application, the battery cell 21 includes a first surface 216 and a fourth surface positioned opposite the first surface 216, wherein the first surface 216 and the fourth surface are positioned opposite each other along a first direction, and the edge of the fourth surface is provided with a recess, the first surface 216 is for mounting electrode terminals 214, the electrode terminals 214 are positioned protruding from the first surface 216 in a second direction and corresponding to the recess.

[0127] Specifically, as shown in Figures 13 and 14, the first surface 216 is the largest surface in area, and the fourth surface is installed, with the fourth surface and the first surface 216 facing each other along the first direction, satisfying the need for versatility of the battery 10 in order to provide sufficient working space for repair and detection when repairing and detecting the battery 10.

[0128] Furthermore, by arranging the first surface 216 and the fourth surface to face each other in the first direction, the effective arrangement of the electrode terminals 214 is facilitated, meeting the electrical draw-out needs of different batteries 10 and further ensuring the effective power supply of batteries 10.

[0129] In some embodiments of this application, the battery cell 21 includes a first surface 216 and a fourth surface positioned opposite the first surface 216, wherein the first surface 216 and the fourth surface are positioned opposite each other along a second direction, the second direction, the first direction and the third direction intersect twice each, and the edge of the fourth surface is provided with a recess, the first surface 216 is for mounting electrode terminals 214, the electrode terminals 214 are positioned protruding from the first surface 216 in the second direction and corresponding to the recess.

[0130] Specifically, as shown in Figures 15 and 16, two first surfaces 216 are provided, each having the largest area, and the two first surfaces 216 are positioned opposite each other along a second direction, further satisfying the need for versatility of the battery 10 while providing sufficient working space for repair and detection when repairing and detecting the battery 10.

[0131] Furthermore, by arranging the two first surfaces 216 so that they face each other in the second direction, the effective arrangement of the electrode terminals 214 is facilitated, meeting the electrical draw-out needs of different batteries 10 and further ensuring the effective power supply of batteries 10.

[0132] In some embodiments of this application, the battery 10 further includes a heat conduction member 40 which is positioned along a first direction and is heat conduction connected to at least the largest surface area of ​​the battery cell 21.

[0133] Specifically, as shown in Figures 25, 27, and 28, the battery 10 further includes a heat conduction member 40, which is installed inside the housing 30 of the battery 10 and is positioned along a first direction. The largest surface area of ​​the battery cell 21 is heat-conductively connected to the heat conduction member 40, increasing the contact area between the battery cell 21 and the heat conduction member 40, thereby increasing the heat exchange efficiency between the battery cell 21 and the heat conduction member 40 and reducing safety problems caused by poor heat dissipation of the battery 10.

[0134] Furthermore, in this application, the first direction is the direction of travel of the power consuming device, the second direction and the first direction are both in the same plane, and the second direction is perpendicular to the first direction. When the power consuming device is subjected to an external impact along the second direction, the end of the heat conduction member 40 can be effectively protected, thereby preventing the occurrence of a situation in which the heat conduction member 40 fails due to damage to its end.

[0135] In some embodiments of this application, the battery 10 includes at least two battery assemblies 20, and along the second direction, both sides of the heat conduction member 40 are heat conductionally connected to the two battery assemblies 20, and the second direction, the first direction and the third direction intersect twice each.

[0136] Specifically, as shown in Figures 27 and 28, the heat conduction member 40 is provided between the two battery assemblies 20 and is heat conduction-connected to each of the two battery assemblies 20. Here, the second direction is the width direction of the battery 10 or the lateral direction of the travel direction of the power-consuming device. By heat conduction-connecting both sides of the heat conduction member 40 to the surface of the battery cell 21 with the largest area, the heat exchange effect of the heat conduction member 40 on the battery cell 21 is improved.

[0137] Furthermore, each battery assembly 20 located within the housing 30 is connected to the heat conduction member 40 via heat conduction, further ensuring sufficient heat dissipation from the battery assembly 20 and further reducing safety issues caused by poor heat dissipation of the battery 10.

[0138] In some embodiments of this application, the battery 10 includes a plurality of heat conductive members 40, the plurality of heat conductive members 40 are arranged along a second direction, and the second direction, the first direction and the third direction intersect in pairs.

[0139] Specifically, as shown in Figures 27 and 28, by installing multiple heat conduction members 40, the heat exchange capacity for the battery cell 21 can be further enhanced, the battery 10 can be kept within a relatively safe temperature range, and safety problems due to poor heat dissipation can be further reduced.

[0140] In some embodiments of this application, along a second direction, heat conduction members 40 are provided on both sides of the battery assembly 20, and the battery assembly 20 is heat conduction connected to the heat conduction members 40 on both sides.

[0141] Specifically, as shown in Figures 27 and 28, both sides of the battery assembly 20 are connected to the heat conduction member 40, thereby further enhancing the heat dissipation capacity of the battery assembly 20, maintaining the temperature of the battery 10 within a relatively safe temperature range, and further reducing safety problems caused by poor heat dissipation.

[0142] In some embodiments of this application, along a second direction, the battery cell 21 includes two opposing third surfaces 218, the third surface 218 being the surface with the largest area of ​​the battery cell 21, and the two third surfaces 218 of the battery cell 21 are each thermally conductively connected to one thermal conductive member 40.

[0143] Specifically, as shown in Figures 27 and 28, by installing two third surfaces 218 with the largest area and connecting one heat conduction member 40 to each of the two third surfaces 218, the heat exchange efficiency between the battery cell 21 and the heat conduction member 40 is further increased, thereby improving the heat dissipation performance of the battery cell 21 and further reducing safety problems of the battery 10 due to excessively high temperatures.

[0144] In some embodiments of this application, the heat conductive member 40 may be an electron refrigeration sheet, such as PTC.

[0145] In some embodiments of this application, as shown in Figure 30, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a body portion 2131 and a tab 2132 protruding from the body portion 2131, the tab 2132 being electrically connected to an electrode terminal 214, and along a second direction, the projections of the heat conductive member 40 and the body portion 2131 overlap at least partially and have overlapping regions, and the first, second, and third directions intersect twice each.

[0146] Specifically, during use, the heat generated by the battery cell 21 is mainly concentrated in the main body 2131 of the electrode assembly 213. By creating an overlapping area between the heat conductive member 40 and the main body 2131, heat can be effectively dissipated between the main body 2131 and the heat conductive member 40, improving the heat exchange performance of the heat conductive member 40 with respect to the main body 2131, maintaining the battery cell 21 at a safe temperature, and further enhancing safety during use.

[0147] As shown in Figures 29 and 30, in some embodiments of this application, along a third direction, the size of the main body 2131 is L1 and the size of the heat conductive member 40 is L2, where 0.5 ≤ L2 / L1 ≤ 1.5.

[0148] In this embodiment, by setting the range value of L2 / L1 within the interval [0.5, 1.5], the space occupied by the heat conductive member 40 in the third direction can be reduced, thereby further increasing the space utilization rate of the battery 10.

[0149] It should be understood that if L2 / L1 is less than 0.5, the size of the heat conductive member 40 is too small to effectively exchange heat with the battery cell 21, and if L2 / L1 is greater than 1.5, the size of the heat conductive member 40 is relatively large, which tends to occupy space in the battery 10, making it unfavorable to improving the space utilization rate of the battery 10.

[0150] It should be noted that in this embodiment, the value of L2 / L1 may be 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4...1.5.

[0151] In some embodiments of this application, along the third direction, the size of the overlapping region is L3, and 0.5 ≤ L3 / L1 ≤ 1.

[0152] In this embodiment, by setting the size of the overlapping region in a third direction, the heat exchange area between the heat conductive member 40 and the main body 2131 can be rationally set, and the heat exchange effect of the heat conductive member 40 on the main body 2131 can be greatly enhanced.

[0153] It should be understood that if L3 / L1 is less than 0.5, the overlapping area between the heat conductive member 40 and the main body 2131 is too small, resulting in poor heat exchange effect of the heat conductive member 40 on the battery cell 21, and making it impossible to effectively guarantee heat dissipation to the battery cell 21.

[0154] It should be noted that in this embodiment, the value of L3 / L1 may be 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0155] In some embodiments of this application, the heat conductive member 40 is provided with a passage for accommodating a heat exchange medium.

[0156] Specifically, the heat conduction member 40 is connected to a media circulation device, and a heat exchange medium (e.g., water or oil) is injected into the passage, allowing the heat exchange medium to circulate within the passage. The battery cell 21 transfers heat to the heat exchange medium in the passage via the heat conduction member 40, and the heat exchange medium flows through the passage, carrying the heat exchanged with the battery cell 21 to the outside. This heat exchange method has high heat exchange efficiency and a simple structure.

[0157] In some embodiments of this application, the battery 10 further includes a current collector 50, the current collector 50 being in fluid communication with a heat conduction member 40. Here, the current collector 50 is provided at one end of the heat conduction member 40 located in a first direction, or the current collector 50 is provided at both ends of the heat conduction member 40 located in a first direction.

[0158] Specifically, as shown in Figures 27 and 28, the current collector 50 is installed at one or both ends of the heat conduction member 40 in the first direction. By installing the current collector 50, the heat exchange medium within the heat conduction member 40 can be concentrated, reducing the number of components and thereby improving the space utilization rate within the housing 30.

[0159] Furthermore, when the battery 10 is subjected to pushing or impact in the second direction, the installation position of the current collector 50 can avoid pushing or impact and reduce the possibility of damage to the current collector 50, thereby allowing the heat exchange medium to sufficiently dissipate heat from the battery cell 21 and further reducing safety problems of the battery 10 due to excessive temperature.

[0160] In some embodiments of this application, there are two current collectors 50, the two current collectors 50 are provided at one end of the heat conduction member 40 located in a first direction, the two current collectors 50 are arranged along a third direction, the third direction being the height direction of the battery cell 21, and the first, second, and third directions intersect in pairs.

[0161] Specifically, by installing two current collectors 50, the current collection performance to the heat exchange medium is improved, thereby allowing the heat exchange medium to have a good flow rate and further improving the heat exchange capacity of the battery cell 21 by the heat exchange medium.

[0162] Furthermore, by jointly providing the two current collectors 50 at one end in the first direction and arranging them along the third direction, the space occupied by the current collectors 50 within the battery 10 along the first direction can be effectively reduced, thereby facilitating the installation of other structures within the battery 10.

[0163] In some embodiments of this application, the battery cell 21 further includes a pressure relief mechanism 215, the pressure relief mechanism 215 being mounted on any one surface of the battery cell 21.

[0164] Specifically, when the battery cell 21 experiences thermal runaway, the pressure release mechanism 215 releases the internal pressure of the battery cell 21 in a timely manner, thereby preventing safety problems such as the explosion of the battery cell 21.

[0165] It should be understood that the pressure release mechanism 215 may be installed on the first surface 216, the second surface 217, the third surface 218, or any other surface of the battery cell 21.

[0166] In some embodiments of this application, the pressure relief mechanism 215 is provided on the first surface 216 or the second surface 217.

[0167] Specifically, as shown in Figures 6 to 12, both the pressure relief mechanism 215 and the electrode terminals 214 are provided on the first surface 216. By installing the pressure relief mechanism 215 on the first surface 216, the synchronized mounting of the pressure relief mechanism 215 and the electrode terminals 214 is facilitated, further improving assembly convenience and increasing production efficiency.

[0168] Furthermore, when the pressure relief mechanism 215 is installed on the second surface 217, the second surface 217 connects to the housing 30, thereby utilizing the housing 30 to form protection for the outside of the pressure relief mechanism 215 and reducing the possibility of the pressure relief mechanism 215 being subjected to impact.

[0169] Furthermore, the installation location of the pressure release mechanism 215 can accommodate the needs of different types of battery cells 21 and further improve the safety performance of the battery 10.

[0170] In some embodiments of this application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 being arranged along a first direction.

[0171] Specifically, at least two battery cells 21 are installed side by side along the first direction to facilitate the layout of the battery cells 21 inside the housing 30.

[0172] It should be noted that when at least two battery cells 21 are arranged along the first direction, the larger surface (the surface with the largest area) of the battery cell 21 may be positioned along the first direction and intersect with the horizontal plane, or it may be positioned along the second direction and intersect with the horizontal plane.

[0173] In some embodiments of this application, the battery cell 21 includes an electrode assembly 213 which has a wound and flattened structure, and the outer surface of the electrode assembly 213 includes two flattened surfaces which face each other along a second direction, or the electrode assembly 213 has a laminated structure, and the first electrode plate, separator and second electrode plate of the electrode assembly 213 are laminated along a second direction. The second direction, the first direction and the third direction intersect twice each.

[0174] The electrode assembly 213 is a component in the battery cell 21 where an electrochemical reaction occurs. The battery cell 21 may contain one or more electrode assemblies 213 inside. The electrode assembly 213 is mainly formed by winding or stacking electrode plates (positive electrode plate and negative electrode plate) and leaving them to stand, and generally a separator is provided between the positive electrode plate (first electrode plate) and the negative electrode plate (second electrode plate). The portion of the electrode plates (first electrode plate and second electrode plate) that has active material constitutes the main body portion 2131 of the electrode assembly 213, and the portions of the first electrode plate and second electrode plate that do not have active material each constitute a tab 2132. The positive electrode tab and the negative electrode tab may be located together at one end of the main body portion, or they may be located at both ends of the main body portion 2131, respectively.

[0175] Specifically, by installing the electrode assembly 213 in a wound and flattened shape, and by having the outer surface of the electrode assembly 213 include two flattened surfaces that face each other along the second direction, or by making the electrode assembly 213 a stacked structure, the space occupied by the electrode assembly 213 in the first direction is reduced, making it easier for the battery 10 to lay out and mount other components in the first direction.

[0176] In some embodiments of this application, the maximum size of the battery cell 21 along the first direction is L, and the maximum size of the battery cell 21 along the second direction is D, and the second direction, the first direction and the third direction intersect twice each, where the range value of L / D is 1 to 30.

[0177] Specifically, as shown in Figure 7, the maximum size of the battery cell 21 along the first direction is L, and the maximum size of the battery cell 21 along the second direction is D. By setting the size of the battery cell 21 in the first and second directions, the power capacity of the battery cell 21 can be maximized while ensuring the support strength of the battery cell 21.

[0178] It should be noted that the L / D value can be 1, 2, 3, 4, 5, 6, 7, 8...30. By setting L / D to different values, the battery cells 21 can be given different shapes, and the demand for batteries 10 of different types can be met.

[0179] In some embodiments of this application, the maximum size of the battery cell 21 along the first direction is L, and the maximum size of the battery cell 21 along the third direction is H, with the L / H range being 0.5 to 6, and the first, second, and third directions intersect twice each.

[0180] Specifically, as shown in Figure 7, in Figure 7, the maximum size of the battery cell 21 along the first direction is L, and the maximum size of the battery cell 21 along the third direction is H. By arranging the battery cells 21 according to the above size ratio, the power output of the battery cells 21 can be maximized.

[0181] It should be noted that the L / H value may be 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4...6. By setting L / H to different values, the battery cells 21 can be given different shapes, and the demand for batteries 10 of different types can be met.

[0182] In some embodiments of this application, the housing 30 includes a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 being connected in a detachable manner, the number of second surfaces 217 being at least one, and the at least one second surface 217 being bonded to the first portion 31 or the second portion 32.

[0183] Specifically, as shown in Figure 5, the convenience in the assembly process is improved by installing the second surface 217 so as to be bonded and fixed to the first part 31 or the second part 32 of the housing 30.

[0184] Furthermore, the adhesive fixing provides high connection strength, effectively ensuring the stability of the battery cell 21 within the housing 30.

[0185] In some embodiments of this application, the second surface 217 of the battery cell 21 and the first portion 31 or second portion 32 of the housing 30 may be connected and fixed by a locking mechanism. For example, by installing a locking groove in the first portion 31 or second portion 32 at a position corresponding to the battery cell 21 and locking the battery cell 21 into the locking groove, the connection and fixing of the battery cell 21 and the first portion 31 or second portion 32 can be achieved.

[0186] In some embodiments of this application, the number of second surfaces 217 is two, and the two second surfaces 217 are positioned opposite each other, with the first portion 31 being bonded to one second surface 217 and the second portion 32 being bonded to the other second surface 217.

[0187] Specifically, the number of second surfaces 217 is two, and the two second surfaces 217 are positioned facing each other in a third direction. By setting two second surfaces 217 and bonding and fixing the two second surfaces 217 to the first part 31 and the second part 32 of the housing 30, respectively, the connection strength between the battery cell 21 and the housing 30 is further improved, and the stability of the battery cell 21 within the housing 30 is further improved.

[0188] In some embodiments of this application, as shown in Figure 30, a second surface 217 is fixedly connected to a first portion 31 and / or a second portion 32 via a first adhesive layer 60, and the battery 10 further includes a heat conductive member 40, which is heat conductively connected to the largest surface area of ​​the battery cell 21 via a second adhesive layer 70, and the thermal conductivity coefficient of the first adhesive layer 60 is less than or equal to that of the second adhesive layer 70.

[0189] Specifically, the first adhesive layer 60 is used to connect the second surface 217 to the housing 30, and the second adhesive layer 70 is used to make a thermal conduction connection between the largest surface area of ​​the battery cell 21 and the heat conduction member 40. Therefore, the thermal conductivity coefficient of the first adhesive layer 60 is set to be less than or equal to that of the second adhesive layer 70 to ensure that the battery cell 21 dissipates heat more effectively through the heat conduction member 40.

[0190] In some embodiments of this application, the range of the ratio of the thermal conductivity of the first adhesive layer 60 to the thermal conductivity of the second adhesive layer 70 is 0.1 to 1.

[0191] Specifically, all of the above ratio settings allow for effective heat dissipation from the battery cell 21 via the heat conductive member 40.

[0192] It should be noted that the ratio of the thermal conductivity coefficient of the first adhesive layer to the thermal conductivity coefficient of the second adhesive layer may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0193] Furthermore, in this embodiment, the first adhesive layer 60 and the second adhesive layer 70 may be made of the same type of adhesive, but their thermal conductivity coefficients may differ. That is, the thermal conductivity coefficient of the first adhesive layer 60 is smaller than that of the second adhesive layer 70. For example, the first adhesive layer 60 and the second adhesive layer 70 can be made of different thermal conductivity coefficients by selecting thermally conductive polyurethane adhesive layers and adding different amounts of thermally conductive particles to them.

[0194] Furthermore, the first adhesive layer 60 and the second adhesive layer 70 may be two different types of adhesives. For example, the first adhesive layer 60 may be a structural adhesive, a foam filler, a pressure-sensitive adhesive, or a potting adhesive, and the second adhesive layer 70 may be a thermal conductive adhesive.

[0195] In some embodiments of this application, the battery 10 further includes a baffle 321, which is positioned along a third direction opposite to a first surface 216 on which the electrode terminals 214 of the battery cell 21 are provided, and the distance between the electrode terminals 214 and the baffle 321 is 1.2 mm to 25 mm.

[0196] Specifically, the baffle 321 is installed inside the housing 30 and is positioned corresponding to the electrode terminals of the battery cell 21. By setting the distance between the baffle 321 and the electrode terminals 214 to 1.2 mm to 25 mm, damage to the electrode terminals 214 due to impact between the baffle 321 and the electrode terminals 214 can be prevented when the battery 10 is struck along the second direction.

[0197] It should be noted that the distance between the baffle 321 and the electrode terminal 214 may be 1.2 mm, 3 mm, 4.5 mm, 6 mm, 8.5 mm, 1 mm... up to 25 mm.

[0198] A second aspect of this application proposes a power-consuming device which includes the above-mentioned battery 10, and the battery 10 is used to provide electrical energy to drive the power-consuming device.

[0199] In some embodiments of this application, when the longitudinal direction of the battery 10 and the direction of travel of the power-consuming device are different, the first direction is the direction of travel of the power-consuming device.

[0200] Specifically, as shown in Figures 1 to 9, the first direction is set to the direction of travel of the power-consuming device, and the third direction intersects both the first direction and the horizontal direction. The battery cells 21 located inside the housing 30 of the battery 10 have a first surface 216 and a second surface 217. Electrode terminals 214 are installed on the first surface 216, and the second surface 217 is connected to the housing 30. The setting of the first direction facilitates the installation and layout of the battery 10 to the power-consuming device, and the arrangement of the battery cells 21 inside the housing 30 is adjusted to meet the usage needs of different power-consuming devices.

[0201] The above description is merely an outline of the proposed technology of this application. In order to provide a clearer understanding of the technical means of this application, and to make the other objectives, features, and advantages of this application clearer and easier to understand, the following will describe specific embodiments of this application in particular.

[0202] In the embodiments of this application, as shown in Figures 1 to 33, this application proposes a battery 10 which includes a housing 30 and a battery assembly 20 provided within the housing 30, the number of electrode assemblies 213 is at least one, and each electrode assembly 213 includes at least one battery cell 21, where the battery cell 21 includes a first surface 216 and a second surface 217, the first surface 216 is provided with electrode terminals 214, and the second surface 217 is connected to the housing 30. The battery assembly 20 is installed along a first direction (the first direction being the longitudinal direction of the battery 10 or the direction of travel of the power-consuming device having the battery 10), and the second surface 217 intersects with a third direction (the height direction of the battery 10), where the first surface 216 is installed along the first direction and may intersect with a horizontal plane, or along the second direction (the width direction of the battery 10) and may intersect with a horizontal plane, or may be installed opposite the second surface 217 in the third direction, with the first, second, and third directions intersecting twice each.

[0203] When the battery 10 is used in a power-consuming device, taking the example that the power-consuming device is a vehicle, the vehicle can move by being driven by the battery 10, and the battery assembly 20 constituting the battery 10 is installed along a first direction, and this first direction may be the direction of travel of the vehicle, that is, the battery assembly 20 is installed along the direction of travel of the vehicle 1. In this application, the battery 10 has a rectangular structure, and the battery 10 having a rectangular structure has a longitudinal direction, a width direction and a height direction, and the battery assembly 20 located inside the housing 30 is installed along a first direction, and this first direction may be the longitudinal direction of the battery 10.

[0204] Specifically, the battery cell 21 has a first surface 216 and a second surface 217, the second surface 217 is positioned to intersect with a third direction (the third direction intersects with both the first direction and the horizontal direction), and the electrode terminals 214 are installed on the first surface 216 and the second surface 217 is connected to the housing 30. As a result, the connection surface between the battery cell 21 and the housing 30 does not have electrode terminals 214, making it easy for the electrode terminals 214 to be sufficiently exposed to the outside after the housing 30 is opened. This facilitates the repair and detection of the battery 10 without separating the battery cell 21 and the housing 30 after the housing 30 is opened, improving the convenience of repairing and detecting the battery 10.

[0205] Furthermore, when the first surface 216 and the second surface 217 are installed in correspondence, both may be the surfaces with the largest area, or neither may be the surfaces with the largest area; when the first surface 216 and the second surface 217 are installed intersecting, either the first surface 216 or the second surface 217 may be the surface with the largest area; when neither the first surface 216 nor the second surface 217 is the surface with the largest area, the battery cell 21 further has a third surface 218 with the largest area; when the first surface 216 and the second surface 217 are installed facing each other in a third direction, the third surface 218 may be installed between the first surface 216 and the second surface 217; when the first surface 216, the second surface 217 and the third surface 218 intersect twice each, the first surface 216 and the third surface 218 constitute the outer circumferential surface of the battery cell 21.

[0206] The housing 30 includes a first portion 31 and a second portion 32, where the second portion 32 may be a hollow structure with one end open, and the first portion 31 may be a plate-like structure, and the first portion 31 is placed over the open side of the second portion 32 such that the first portion 31 and the second portion 32 jointly define a space for housing the battery cell 21. The second surface 217 may be bonded and fixed to the first portion 31 or the second portion 32 via the first adhesive layer 60.

[0207] Along the first direction, the maximum size of the battery cell 21 is L, and along the second direction, the maximum size of the battery cell 21 is D, where the range value of L / D is 1 to 30. Along the third direction, the maximum size of the battery cell 21 is H, and the range value of L / H is 0.5 to 6.

[0208] Furthermore, the battery cell 21 is equipped with a pressure relief mechanism 215, which may be installed on any one of the first surface 216, the second surface 217, or the third surface 218. In the structure shown in the drawings of this specification, both the pressure relief mechanism 215 and the electrode terminals 214 are provided on the first surface 216.

[0209] Furthermore, the battery 10 further includes a heat conduction member 40, which is installed inside the housing 30 of the battery 10, and is positioned along a first direction, and is heat-conductively connected to the battery cell 21, where the surface on which the battery cell 21 and the heat conduction member 40 are heat-conductively connected may be the surface of the battery cell 21 with the largest area. A passage for accommodating a heat exchange medium is provided inside the heat conduction member 40, and the heat exchange medium flows through the passage and transfers heat to the battery cell 21 via the heat conduction member 40.

[0210] The heat conductive member 40 and the battery cell 21 are bonded and fixed together via a second adhesive layer 70, and the ratio of the thermal conductivity coefficient of the first adhesive layer 60 to the thermal conductivity coefficient of the second adhesive layer 70 is in the range of 0.1 to 1.

[0211] Furthermore, along the second direction, the projections of the heat conduction member 40 and the main body 2131 overlap at least partially and have an overlapping region.

[0212] Furthermore, along the third direction, the size of the main body 2131 is L1, and the size of the heat conductive member 40 is L2, where 0.5 ≤ L2 / L1 ≤ 1.5.

[0213] Furthermore, along the third direction, the size of the overlapping region is L3, and 0.5 ≤ L3 / L1 ≤ 1.

[0214] Furthermore, the battery 10 further includes a current collector 50, which is installed at the end of the heat conduction member 40 located in the first direction and communicates with the heat exchange medium passage of the heat conduction member 40.

[0215] Furthermore, the housing 30 is further provided with a baffle 321, which is installed corresponding to the electrode terminals 214 of the battery cell 21, and the distance between the electrode terminals 214 and the baffle 321 is 1.2 mm to 25 mm.

[0216] Finally, it should be noted that the above embodiments are merely illustrative of the technical concepts of this application and do not limit them. While the application has been described in detail with reference to the embodiments described above, those skilled in the art will understand that the technical concepts described in the above embodiments can still be modified, or some or all of their technical features can be replaced with equivalent ones. Such modifications or replacements should not deviate the essence of the relevant technical concepts from the scope of the technical concepts in the embodiments of this application, and should all be included within the scope of the claims and specification of this application. In particular, unless there is a structural conflict, the technical features referred to in each embodiment may be combined in any manner. This application is not limited to the specific embodiments disclosed herein, but includes all technical concepts included within the claims. [Explanation of Symbols]

[0217] 1: Vehicle, 10: Battery, 11: Controller, 12: Motor, 20: Battery assembly, 21: Battery cell, 211: Case, 212: End cap, 213: Electrode assembly, 2131: Main body, 2132: Tab, 214: Electrode terminals, 215: Pressure release mechanism, 216: First surface, 217: Second surface, 218: Third surface, 30: Enclosure, 31: First part, 32: Second part, 321: Baffle, 40: Heat conductive material, 50: Current collector, 60: First adhesive layer, 70: The second adhesive layer.

Claims

1. It is a battery, The enclosure (30) and A battery assembly (20) housed in the housing (30), comprising at least one battery cell (21), and installed along a first direction, wherein the first direction is the longitudinal direction of the battery or the direction of travel of a power-consuming device having the battery, the battery cell (21) having a first surface (216) and a second surface (217), the first surface (216) having electrode terminals (214), the second surface (217) connecting to the housing (30), the second surface (217) intersecting a third direction, the third direction intersecting both the first direction and the horizontal plane, The battery further includes a heat conductive member (40), the heat conductive member (40) is positioned along the first direction, and the heat conductive member (40) is heat conductively connected to at least the largest surface area of ​​the battery cell (21). The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) includes a main body (2131) and a tab (2132) protruding from the main body (2131), the tab (2132) being electrically connected to the electrode terminal (214), Along the second direction, the projections of the heat conductive member (40) and the main body (2131) overlap at least partially and have an overlapping region, and the first direction, the second direction and the third direction intersect twice each. The housing (30) includes a first portion (31) and a second portion (32), the first portion (31) and the second portion (32) are connected in a detachable manner, the number of second surfaces (217) is at least one, and at least one second surface (217) is bonded to the first portion (31) or the second portion (32), A battery characterized in that the second surface (217) is fixedly connected to the first portion (31) and / or the second portion (32) via a first adhesive layer (60), the heat conductive member is heat conductively connected to the surface of the battery cell (21) with the largest area via a second adhesive layer (70), and the thermal conductivity coefficient of the first adhesive layer (60) is less than or equal to that of the second adhesive layer (70).

2. The battery according to claim 1, characterized in that the longitudinal direction of the battery is parallel to or intersects the direction of travel of the power-consuming device.

3. The battery according to claim 1, wherein, along the third direction, the first surface (216) is positioned opposite the second surface (217), the battery cell (21) further has a third surface (218), the third surface (218) is the surface of the battery cell (21) with the largest area, the third surface (218) is positioned along the third direction and intersects the horizontal plane, and the third surface (218) is connected to the first surface (216) and the second surface (217).

4. The battery according to claim 3, characterized in that the number of the third surfaces (218) is two, the two third surfaces (218) are arranged opposite to each other along the first direction, the battery cell (21) includes two electrode terminals (214) with opposite polarity, and both of the two electrode terminals (214) with opposite polarity are provided on the first surface (216).

5. The battery according to claim 3, wherein the number of the third surfaces (218) is two, the two third surfaces (218) are arranged opposite to each other along the second direction, the battery cell (21) includes two electrode terminals (214) with opposite polarity, and both of the two electrode terminals (214) with opposite polarity are provided on the first surface (216).

6. The battery according to claim 3, wherein the number of the third surface (218) is one, the battery cell (21) includes two electrode terminals (214) with opposite polarity, one of the two electrode terminals (214) with opposite polarity is provided on the first surface (216), and the case (211) of the battery cell (21) constitutes the other of the two electrode terminals (214) with opposite polarity.

7. The battery according to claim 1, wherein the battery cell (21) further has a third surface (218), the third surface (218) is the surface with the largest area of ​​the battery cell (21), the third surface (218) is positioned along the third direction and intersects the horizontal plane, and the first surface (216), the second surface (217), and the third surface (218) intersect twice each.

8. The number of the first surfaces (216) is two, and the two first surfaces (216) are arranged facing each other along the first direction, and the battery cell (21) includes two electrode terminals (214) with opposite polarities. The battery according to claim 7, characterized in that, the two electrode terminals (214) having opposite polarities are each provided on one of the first surfaces (216), or the two electrode terminals (214) having opposite polarities are each provided on two of the first surfaces (216).

9. The number of the first surfaces (216) is two, and the two first surfaces (216) are arranged facing each other along the second direction, and the battery cell (21) includes two electrode terminals (214) with opposite polarities. The battery according to claim 7, characterized in that, the two electrode terminals (214) having opposite polarities are each provided on one of the first surfaces (216), or the two electrode terminals (214) having opposite polarities are each provided on two of the first surfaces (216).

10. The second surface (217) is the surface of the battery cell (21) with the largest area, the area of ​​the first surface (216) is smaller than the area of ​​the second surface (217), the first surface (216) is positioned along the first direction and intersects with the second surface (217), the battery cell (21) includes the two first surfaces (216), and along the second direction, the two first surfaces (216) are positioned opposite each other. The battery according to claim 1, wherein the battery cell (21) includes two electrode terminals (214) with opposite polarities, and the two electrode terminals (214) with opposite polarities are both provided on the same first surface (216), or the two electrode terminals (214) with opposite polarities are each provided on two of the first surfaces (216).

11. The second surface (217) is the surface of the battery cell (21) with the largest area, the area of ​​the first surface (216) is smaller than the area of ​​the second surface (217), the first surface (216) is positioned along the second direction and intersects with the second surface (217), the battery cell (21) includes the two first surfaces (216), and along the first direction, the two first surfaces (216) are positioned opposite each other. The battery according to claim 1, wherein the battery cell (21) includes two electrode terminals (214) with opposite polarities, and the two electrode terminals (214) with opposite polarities are both provided on the same first surface (216), or the two electrode terminals (214) with opposite polarities are each provided on two of the first surfaces (216).

12. The battery according to claim 1, characterized in that the first surface (216) is the surface of the battery cell (21) with the largest area.

13. The battery according to claim 12, wherein the battery cell (21) includes the first surface (216) and the fourth surface which is installed opposite to the first surface (216), the first surface (216) and the fourth surface which are installed opposite to each other along a first direction, the edge of the fourth surface which is provided with a recess, the first surface (216) which is for installing the electrode terminal (214), the electrode terminal (214) which is installed protruding from the first surface (216) in the second direction and which corresponds to the recess.

14. The battery according to claim 12, wherein the battery cell (21) includes the first surface (216) and the fourth surface which is installed opposite to the first surface (216), the first surface (216) and the fourth surface which are installed opposite to each other along a second direction, the edge of the fourth surface is provided with a recess, the first surface (216) is for installing the electrode terminal (214), the electrode terminal (214) is installed protruding from the first surface (216) in the second direction and corresponds to the recess.

15. The battery according to claim 1, wherein the battery comprises at least two battery assemblies (20), and both sides of the heat conductive member (40) are heat conductively connected to the two battery assemblies (20) in a second direction.

16. The battery according to claim 1, wherein the battery includes a plurality of heat conductive members (40), and the plurality of heat conductive members (40) are arranged along a second direction.

17. The battery according to claim 16, wherein, along the second direction, the heat conductive members (40) are provided on both sides of the battery assembly (20), and the battery assembly (20) is heat-conductively connected to the heat conductive members (40) on both sides.

18. The battery according to claim 17, wherein, along the second direction, the battery cell (21) includes two opposing third surfaces (218), the third surface (218) being the surface with the largest area of ​​the battery cell (21), and the two third surfaces (218) of the battery cell (21) are each thermally conductively connected to one of the thermal conductive members (40).

19. The battery according to claim 1, characterized in that, along the third direction, the size of the main body (2131) is L1, and the size of the heat conductive member (40) is L2, where 0.5 ≤ L2 / L1 ≤ 1.

5.

20. The battery according to claim 1, characterized in that, along the third direction, the size of the overlapping region is L3 and 0.5 ≤ L3 / L1 ≤ 1.

21. The battery according to claim 1, characterized in that a passage for accommodating a heat exchange medium is provided within the heat conductive member (40).

22. The battery further includes a current collector (50), the current collector (50) is in fluid communication with the heat conductive member (40), The battery according to claim 21, characterized in that, a current collector (50) is provided at one end of the heat conductive member (40) located in the first direction, or a current collector (50) is provided at both ends of the heat conductive member (40) located in the first direction.

23. The battery according to claim 22, characterized in that there are two current collectors (50), the two current collectors (50) are provided at one end of the heat conduction member (40) located in the first direction, and the two current collectors (50) are arranged along the third direction.

24. The battery according to claim 1, wherein the battery cell (21) further includes a pressure release mechanism (215), and the pressure release mechanism (215) is installed on any one surface of the battery cell (21).

25. The battery according to claim 24, characterized in that the pressure release mechanism (215) is provided on the first surface (216) or the second surface (217).

26. The battery according to claim 1, wherein the battery assembly (20) includes at least two battery cells (21), and the at least two battery cells (21) are arranged along the first direction.

27. The electrode assembly (213) has a wound structure and is flattened, and the outer surface of the electrode assembly (213) includes two flattened surfaces, the two flattened surfaces facing each other along a second direction, Alternatively, the electrode assembly (213) has a laminated structure, and the first electrode plate, separator and second electrode plate of the electrode assembly (213) are laminated along a second direction. The battery according to feature 1.

28. The battery according to claim 1, wherein the maximum size of the battery cell (21) along the first direction is L, and the maximum size of the battery cell (21) along the second direction is D, where the range value of L / D is 1 to 30.

29. The battery according to claim 1, characterized in that, along the first direction, the maximum size of the battery cell (21) is L, and along the third direction, the maximum size of the battery cell (21) is H, and the range value of L / H is 0.5 to 6.

30. The battery according to claim 1, characterized in that there are two second surfaces (217), the two second surfaces (217) are installed facing each other, the first portion (31) is bonded to one of the second surfaces (217), and the second portion (32) is bonded to the other second surface (217).

31. The battery according to claim 1, characterized in that the range of the ratio between the thermal conductivity coefficient of the first adhesive layer (60) and the thermal conductivity coefficient of the second adhesive layer (70) is 0.1 to 1.

32. The battery according to claim 1, further comprising a baffle, the baffle being positioned along the third direction opposite to the first surface (216) on which the electrode terminals (214) of the battery cell (21) are provided, and the distance between the electrode terminals (214) and the baffle is 1.2 mm to 25 mm.

33. A power-consuming device comprising a battery according to any one of claims 1 to 32, wherein the battery is used to provide electrical energy to drive the power-consuming device.

34. The power consuming device according to claim 33, characterized in that when the longitudinal direction of the battery and the direction of travel of the power consuming device are different, the first direction is the direction of travel of the power consuming device.

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