Batteries and power consumption devices

Abstract

To provide a battery and power consumption device that improve the space utilization rate of the battery and increase the energy density of the battery. [Solution] The battery includes a housing and a battery array, the housing having a housing cavity, the battery array being housed within the housing cavity, the battery array being formed by arranging M × N battery cells 21 in M ​​rows and N columns, where M ≥ 1, N ≥ 1, and both M and N are positive integers. The battery cells in each column of the battery array are arranged along a first direction, the first direction being the longitudinal direction of the battery or the direction of travel of the power consumption device having the battery, and the battery cells in each row of the battery array are arranged along a second direction, the second direction and the first direction intersect and each intersects a vertical plane. The maximum size of the battery array in the second direction is D1, and the maximum size of the housing cavity in the second direction is D2, where D1 / D2 ∈ [0.9, 1].

Description

Technical Field

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

Background Art

[0002] With the development of new energy, more and more fields are adopting new energy as power. Due to advantages such as high energy density, rechargeability, safety, and environmental friendliness, power batteries are widely applied in fields such as new energy vehicles, household appliances, and energy storage systems.

[0003] Power batteries usually include a housing and a plurality of battery cells. The plurality of battery cells are arranged and installed within the housing. Conventionally, they are installed separately from the frame of the housing, which reduces the space utilization rate of the battery and is disadvantageous for improving the energy density of the battery.

Summary of the Invention

[0004] This application is made in view of the above problems, and provides a battery and a power consumption device that solve the problem of the low space utilization rate of conventional batteries.

[0005] The first aspect of this application provides a battery, which includes a housing having a receiving cavity, a battery array accommodated within the receiving cavity, the battery array being formed by arranging M*N battery cells in M rows and N columns, where M≥1, N≥1, and both M and N are positive integers, the battery cells in each column of the battery array are arranged along a first direction, the first direction being the longitudinal direction of the battery or the running direction of the power consumption device having the battery, the battery cells in each row of the battery array are arranged along a second direction, the second direction intersects with the first direction, and both intersect with a vertical plane, The maximum size of the battery array in the second direction is D1, and the maximum size of the housing cavity in the second direction is D2, where D1 / D2 ∈ [0.9, 1].

[0006] According to the battery of this application, all battery cells form a battery array, where each row of the battery array is arranged along a first direction, and each row of the battery array is arranged along a second direction, where the maximum size of the battery array is D1 and the maximum size of the housing cavity is D2, and by setting the value of D1 / D2 in the interval [0.9,1], the occupancy rate of the battery array within the housing is increased, the gap between the battery array and the housing is reduced, which helps to improve the space utilization rate of the battery and increase the energy density of the battery.

[0007] In some embodiments of this application, D1 / D2 ∈ [0.99, 1]. In these embodiments, by further setting the value of D1 / D2 to the interval [0.99, 1], the gap between the battery array and the housing is reduced, the space utilization rate within the housing is further improved, and the space utilization rate and energy density of the battery are further increased.

[0008] In some embodiments of this application, the longitudinal direction of the battery is parallel to or intersects the direction of travel of the power consumption device. In these embodiments, by arranging the battery so that its longitudinal direction is parallel to or intersects the direction of travel of the power consumption device, the convenience of arranging the battery in the power consumption device is improved.

[0009] In some embodiments of this application, the housing comprises at least one partition beam installed within the housing to divide at least two housing cavities within the housing, and the battery array is installed in each of the housing cavities. In these embodiments, the partition beam is provided within the housing, and the partition beam divides the housing cavities within the housing, thereby increasing the overall strength of the housing, and the partition beam protects the battery array, reducing damage to the battery array due to impact.

[0010] In some embodiments of this application, the housing includes a frame positioned along the first direction and intersecting the second direction, the frame constituting part of the housing cavity, and part of the edge of the battery array is connected to the frame. In these embodiments, connecting part of the edge of the battery array to the frame reduces the gap between the battery array and the housing, and further improves the space utilization rate and energy density of the batteries.

[0011] In some embodiments of this application, the battery cell includes a plurality of surfaces, the plurality of surfaces including a first surface, the first surface being the surface with the largest area, the first surface being positioned along a first direction and intersecting the horizontal plane, the first surfaces of two adjacent battery cells in each row being positioned facing each other along a second direction, and the first surface of the battery cell closest to the frame being connected to the frame. In this embodiment, connecting the surface with the largest area (first surface) of the battery cell to the frame can increase the support strength of the housing for the battery cell and reinforce the battery's resistance to expansion.

[0012] In some embodiments of this application, the battery cell includes a plurality of surfaces, including a first surface and a second surface, the first surface being the surface with the largest area, the second surface being smaller in area than the first surface, the second surface being positioned along the first direction and intersecting the horizontal plane, the first surface being positioned along the second direction and intersecting the horizontal plane, the first surfaces of two adjacent battery cells in each row being positioned opposite each other along the first direction, the second surfaces of two adjacent battery cells in each row being positioned opposite each other along the second direction, and the second surface of the battery cell closest to the frame being connected to the frame. In these embodiments, the first surface is the surface of the battery cell with the largest area, the area of ​​the second surface is smaller than the area of ​​the first surface, and by setting the positioning of the first and second surfaces, the battery array can meet the demands of different batteries and enhance the adaptability of the batteries.

[0013] In some embodiments of this application, the battery cell includes a plurality of surfaces, the plurality of surfaces including a first surface with the largest area, the first surfaces of two adjacent battery cells in each row facing each other along the first direction, the first surfaces of two adjacent battery cells in each row offset along the second direction, and the first surface of the battery cell closest to the frame connected to the frame. In this embodiment, the first surface is the surface with the largest area of ​​the battery cell, and by setting the first surfaces of two adjacent battery cells in each row and the first surfaces of two adjacent battery cells in each column, the battery array can meet different battery needs and enhance battery adaptability.

[0014] In some embodiments of this application, the battery cell includes a plurality of surfaces, the plurality of surfaces including a first surface with the largest area, the first surfaces of two adjacent battery cells in each row are offset along the first direction, the first surfaces of two adjacent battery cells in each row are facing each other along the second direction, and the first surface of the battery cell closest to the frame is connected to the frame. In this embodiment, the first surface is the surface with the largest area of ​​the battery cell, and by setting the first surfaces of two adjacent battery cells in each row and the first surfaces of two adjacent battery cells in each column, the battery array can meet different battery needs and enhance battery adaptability.

[0015] In some embodiments of this application, in the battery array, M≧2, and in each row of the battery cells, an adhesive is placed between two adjacent battery cells. and / or, in the battery array, N≧2, and in each row of the battery cells, an adhesive is placed between two adjacent battery cells.

[0016] In this embodiment, the battery array is installed in an M row and N column configuration. When there are two or more battery cells in each column, two adjacent battery cells in each column are connected and fixed using adhesive. When there are two or more battery cells in each row, two adjacent battery cells in each row are connected and fixed using adhesive. This method of connecting and fixing two adjacent battery cells with adhesive has a simple structure, facilitates the assembly process, speeds up production, and improves production efficiency.

[0017] In some embodiments of this application, in the battery array, M≧2, and in each row of the battery cells, a partition member is installed between two adjacent battery cells. Alternatively, in the battery array, N ≥ 2, and in each row of the battery cells, a partition member is installed between two adjacent battery cells.

[0018] In this embodiment, by providing a partition member between two adjacent battery cells in each row, the two adjacent battery cells can be installed with a gap between them, thereby reducing adverse effects between adjacent battery cells, allowing the battery to perform to its full potential, and also improving safety during the battery's use. Similarly, by providing a partition member between two adjacent battery cells in each row, the two adjacent battery cells can be installed with a gap between them, reducing adverse effects between adjacent battery cells, allowing the battery to perform to its full potential, and also improving safety during the battery's use.

[0019] In some embodiments of this application, the partition member includes at least one of a heat conduction member, a buffer member, and a partition plate.

[0020] In this embodiment, the partition member is provided as at least one of a heat conduction member, a buffer member, a partition plate, and a partition beam, and two adjacent battery cells are separated. Then, by providing the corresponding partition member according to different demands, the battery array can meet the corresponding usage demands.

[0021] In some embodiments of this application, the partition member includes a heat conduction member installed along the first direction and intersecting the second direction, the heat conduction member is installed on at least one side of the battery cells in each row, and each of the battery cells in each row is thermally connected to one of the heat conduction members. In this embodiment, a heat conduction member is provided, and the installation method of the heat conduction member is such that each of the battery cells in each row can be thermally connected to the heat conduction member, thereby achieving efficient heat dissipation to each of the battery cells in each row, maintaining the battery cells in a relatively safe operating temperature range, and further enhancing the safety of battery use.

[0022] 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 in the second direction, the projections of the heat conductor and the body overlap at least partially and have an overlapping region. In this embodiment, by providing the heat conductor and the body in a configuration that at least partially overlaps along the second direction, the body can be effectively heat-exchanged by the heat conductor, thereby enhancing the heat exchange effect on the battery cell.

[0023] In some embodiments of this application, along the third direction, the size of the main body is L1, the size of the heat conductive member is L2, and the first, second, and third directions intersect twice each, where 0.5 ≤ L2 / L1 ≤ 1.5.

[0024] In this embodiment, by setting the range value of L2 / L1 within the interval [0.5, 1.5], the space occupied by the heat conduction member in the third direction can be reduced, thereby further improving the space utilization rate of the battery.

[0025] In some embodiments of this application, in the third direction, the overlapping region has a size L3 and satisfies 0.5 ≤ L3 / L1 ≤ 1.

[0026] In this embodiment, by setting the size of the overlapping region in the third direction, the heat exchange area between the heat conduction member and the main body can be reasonably set, and the heat exchange effect of the heat conduction member on the main body can be significantly enhanced.

[0027] In some embodiments of the present application, a passage for accommodating a heat exchange medium is installed in the heat conduction member. In this embodiment, the battery cell performs heat transfer with the heat exchange medium in the passage through the heat conduction member, and the heat exchange medium flows in the passage. This heat exchange method has high heat exchange efficiency and a simple structure.

[0028] In some embodiments of the present application, the battery further includes a current collector that is in fluid communication with the heat conduction member.

[0029] Here, the current collector is installed at one end of the heat conduction member in the first direction, or the current collectors are respectively installed at both ends of the heat conduction member in the first direction.

[0030] In this embodiment, by providing a current collector, the aggregation of the heat exchange medium in the heat conduction member is realized, the number of parts is reduced, and thereby the space utilization rate in the housing is improved. Also, when the battery is subjected to pressing or impact in the second direction, the installation position of the current collector can avoid the pressing or collision, reduce the possibility of damage to the current collector, and enable the battery to dissipate heat sufficiently by the heat exchange medium, further reducing the safety risk of the battery due to excessively high temperature.

[0031] In some embodiments of this application, there are two current collectors, the two current collectors are installed at one end of the heat conductive member in the first direction, and the two current collectors are arranged along a third direction, with the first, second, and third directions intersecting twice each. In these embodiments, by installing two current collectors, the current collection performance to the heat exchange medium is improved, a good flow velocity is given to the heat exchange medium, and the heat exchange capacity of the heat exchange medium to the battery cell is further improved. Furthermore, by providing both current collectors at one end in the first direction and arranging them in the third direction, the space occupied by the current collectors in the battery in the first direction can be effectively reduced, thereby making it easier to install other structures within the battery.

[0032] In some embodiments of this application, the partition member includes a heat conduction member installed along the second direction and intersecting the first direction, the heat conduction member is installed on at least one side of the battery cells in each row, and each of the battery cells in each row is thermally conductively connected to the heat conduction member. In this embodiment, a heat conduction member is provided, and the installation method of the heat conduction member is such that each of the battery cells in each row can be thermally conductively connected to the heat conduction member, thereby achieving efficient heat dissipation to each of the battery cells in each row, maintaining the battery cells in a relatively safe operating temperature range, and further enhancing the safety of battery use.

[0033] In some embodiments of this application, the battery cell is fixedly connected to the housing by a first adhesive layer, the battery further comprises a heat conductive member, the heat conductive member is thermally conductively connected to the battery cell by 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 these embodiments, the first adhesive layer is used to connect and fix the battery cell to the housing, and the second adhesive layer is used to thermally conductively connect the battery cell to the heat conductive member. Therefore, by making the thermal conductivity of the first adhesive layer less than or equal to the thermal conductivity of the second adhesive layer, more efficient heat dissipation of the battery cell by the heat conductive member is ensured.

[0034] In some embodiments of this application, the ratio of the thermal conductivity of the first adhesive layer to the thermal conductivity of the second adhesive layer is in the range of 0.1 to 1. In these embodiments, setting the above ratio range allows the heat-conducting member to effectively dissipate heat from the battery cell.

[0035] In some embodiments of this application, the battery cell includes electrode terminals, the electrode terminals being located on at least one of the plurality of surfaces. In these embodiments, the electrode terminals are provided to enable electrical leads to the battery cell, thereby ensuring that the battery cell can effectively perform charging and discharging operations.

[0036] In some embodiments of the present disclosure, the plurality of surfaces further include a third surface, the first surface, the second surface, and the third surface intersect in pairs, and the electrode terminals are located on the third surface. In these embodiments, by setting the position of the electrode terminals, the mounting needs of batteries with different battery cell configurations can be met, and the applicability range of the battery cell can be further improved.

[0037] In some embodiments of this application, there are two third surfaces, the two third surfaces are positioned opposite each other and intersect with the first surface, the battery cell includes two electrode terminals of opposite polarity, the two electrode terminals of opposite polarity are positioned on one third surface, or the two electrode terminals of opposite polarity are positioned on two of the third surfaces. In this embodiment, by setting the position of the electrode terminals, the mounting needs of batteries with different battery cell configurations can be met, and the applicability range of the battery cell can be further improved.

[0038] In some embodiments of this application, the battery cell includes two electrode terminals with opposite polarity, the two electrode terminals with opposite polarity being mounted on the third surface, or one of the two electrode terminals with opposite polarity being mounted on the third surface, and the casing of the battery cell constitutes the other of the two electrode terminals with opposite polarity. In these embodiments, by setting the position of the electrode terminals, the mounting needs of batteries with different battery cell configurations can be met, and the applicability range of the battery cell can be further improved.

[0039] 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 and fourth surfaces are positioned opposite each other along a first or second direction, a recess is provided on the edge of the fourth surface, the first surface is used to mount the electrode terminals, the electrode terminals are positioned protruding from the first surface in the second direction and corresponding to the recess. In these embodiments, by setting the position of the electrode terminals, the mounting needs of batteries with different battery cell configurations can be met, and the range of application of the battery cell can be further improved.

[0040] In some embodiments of this application, each row of the battery cells comprises at least two of the battery cells, and the at least two battery cells are 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.

[0041] 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 in the second direction, where the range of the L / D value 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.

[0042] 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 H along the third direction, with the L / H ratio ranging from 0.5 to 6. The first, second, and third directions intersect in pairs. In these embodiments, the power output of the battery cells can be maximized by arranging the battery cells in the above size ratio.

[0043] In some embodiments of this application, along the second direction, N×D = n×D2, where n∈[0.7,1]. In these embodiments, by setting the ratio of N×D to D2, the battery array can be made more fitted to the battery housing, the space utilization rate of the battery can be effectively improved while satisfying the mounting requirements for the battery array, and the energy density of the battery can be effectively increased.

[0044] In some embodiments of this application, the battery cell includes an electrode assembly, the electrode assembly being flattened in a wound structure, the outer surface of the electrode assembly having 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 the second direction. In this embodiment, the electrode assembly is set to be flat in a wound structure, the outer surface of the electrode assembly is set to include two flattened surfaces, the two flattened surfaces are positioned opposite each other along the second direction, or the electrode assembly has a laminated 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] A second aspect of this application provides a power consumption device, which includes the battery described above, and the battery is used to supply electrical energy to power the power consumption device.

[0046] In some embodiments of this application, when the longitudinal direction of the battery and the travel direction of the power consumption device are different, the first direction is the travel direction of the power consumption device.

[0047] In this embodiment, the first direction is the direction of travel of the power consumption device, and the third direction intersects 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 to the power consumption device, and by adjusting the arrangement method of the battery cells inside the housing, the usage needs of various power consumption devices can be met.

[0048] 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, to enable implementation based on the contents of the specification, and to make the above and other objectives, features, and advantages of this application clearer and easier to understand, specific embodiments of this application are listed below. [Brief explanation of the drawing]

[0049] [Figure 1] This is a schematic diagram of a vehicle according to one embodiment of the present application. [Figure 2] This is a schematic exploded view of a battery according to one embodiment of the present application. [Figure 3] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 4] This is a schematic exploded view of a battery cell according to one embodiment of the present application. [Figure 5] This is a schematic exploded view of a battery according to one embodiment of the present application. [Figure 6] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 7] Figure 6 is a schematic diagram of the battery cell structure in the battery module shown. [Figure 8] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 9]Figure 8 shows a schematic diagram of the battery cell structure in the battery module. [Figure 10] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 11] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 12] Figures 10 and 11 show schematic diagrams of the battery cell structure in the battery module. [Figure 13] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 14] Figure 13 is a schematic diagram of the battery cell structure in the battery module shown. [Figure 15] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 16] Figure 15 is a schematic diagram of the battery cell structure in the battery module shown. [Figure 17] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 18] Figure 17 is a schematic diagram of the battery cell structure in the battery module shown. [Figure 19] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 20] Figure 19 is a schematic diagram of the battery cell structure in the battery module shown. [Figure 21] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 22] Figure 21 is a schematic diagram of the battery cell structure in the battery module shown. [Figure 23] This is a schematic diagram of a battery module according to one embodiment of the present application. [Figure 24] Figure 23 is a schematic diagram of the battery cell structure in the battery module shown. [Figure 25] This is a schematic diagram of a heat conductive member according to one embodiment of the present application. [Figure 26] This is a schematic diagram of the second part of the housing according to one embodiment of the present application. [Figure 27] This is a schematic diagram of a battery according to one embodiment of the present application (the first part of the housing is not shown). [Figure 28] This figure shows an enlarged view of part A in the structure shown in Figure 27. [Figure 29] This is a cross-sectional view of the BB section in the structure shown in Figure 27. [Figure 30] This figure shows an enlarged view of section C in the structure shown in Figure 29. [Figure 31] This figure shows the structure of the battery module shown in Figure 27. [Figure 32] This figure shows the structure of the battery module shown in Figure 31 from another perspective. [Figure 33] This is a schematic structural diagram showing a second part of a housing according to one embodiment of the present application. [Figure 34] This figure shows the battery distribution structure in a vehicle according to one embodiment of the present application. [Modes for carrying out the invention]

[0050] The following describes in detail embodiments of the technical proposal of this application, with accompanying drawings. The following embodiments are provided for illustrative purposes only to more clearly illustrate the technical proposal of this application and do not limit the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. Terms used herein are used solely to describe specific embodiments and are not intended to limit this application. The terms “including,” “having,” and any variations thereof in the description of the specification, claims, and drawings herein are intended to cover the non-exclusive “including.”

[0052] In the description of the embodiments of this application, terms such as “first,” “second,” etc., are used solely for the purpose of distinguishing different subjects and are not to be understood as explicitly or suggesting relative importance, or implicitly indicating the number, specific order, or primary / secondary relationship of the indicated technical features. In the description of the embodiments of this application, “multiple” means two or more unless specifically defined otherwise.

[0053] Where the “Examples” are referred to in this specification, it means that certain features, structures, or characteristics described in conjunction with the Examples may be included in at least one Example of this Application. The occurrence of the 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 may be combined with other Examples.

[0054] In the description of the embodiments of this application, the term "and / or" merely describes the relationship between related objects and indicates 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 addition, the letter " / " in the text generally indicates that the preceding and succeeding related objects are in an "or" relationship.

[0055] In the description of the embodiments of this application, the term "multiple" means two or more (including two), similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0056] In the description of the embodiments of this application, the orientations or positional relationships indicated by technical terms such as "center," "vertical," "horizontal," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on the orientations or positional relationships shown in the drawings and are intended for the convenience or simplification of the description of the embodiments of this application. They do not indicate or imply that the referred devices or elements have a specific orientation or need to be constructed and operated in a specific orientation, and should not be understood as limiting the embodiments of this application.

[0057] In the description of the embodiments of this application, unless otherwise explicitly defined or limited, technical terms such as “attached,” “connected,” “connected,” and “fixed” should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, integrated, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or be internal communication between the two elements or an interaction relationship between the 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.

[0058] Currently, from the perspective of market development, the applications of power batteries are expanding more and more. Power batteries are not only used in energy storage power systems such as hydroelectric, thermal, wind, and solar power plants, but are also widely used in many fields such as electric transportation tools like electric bicycles, electric motorcycles, and electric vehicles, as well as military equipment and aerospace. Along with the continuous expansion of power battery application fields, the market demand is also constantly growing.

[0059] The applicant of this application argues that conventional power batteries typically include a housing and multiple battery cells, all of which are arranged within the housing and spaced apart from the housing frame, thus reducing the space utilization rate of the battery and being disadvantageous in providing energy density. Therefore, how to solve the problem of low space utilization rate in conventional batteries is a technical problem that those skilled in the art must solve as soon as possible.

[0060] To address the problem of the low space utilization rate of conventional batteries, the inventors of this application have discovered through research that battery cells installed within the housing cavity of a battery enclosure are formed into a battery array, where M × N battery cells are arranged in M ​​rows and N columns, with M ≥ 1 and N ≥ 1, and M and N are all positive integers. Each row of battery cells in the battery array is arranged along a first direction, which is the longitudinal direction of the battery or the direction of travel of the power consumption device containing the battery. Each row of battery cells in the battery array is arranged along a second direction, where the second and first directions intersect and each intersects a vertical plane. The maximum size of the battery array in the second direction is D1, and the maximum size of the housing cavity in the second direction is D2, where D1 / D2 ∈ [0.9, 1]. This increases the occupancy rate of the battery array within the housing, reduces the gap between the battery array and the housing, thereby improving the space utilization rate of the battery and helping to increase the energy density of the battery.

[0061] The battery cell according to the embodiment of this application can be used in power consumption devices such as vehicles, ships, or aircraft, but is not limited to these applications. A power supply system for such a power consumption device can be configured using the battery cell, battery, etc. according to this application.

[0062] The power consumption devices that use batteries as a power source in the embodiments of this application may be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, power tools, battery-powered cars, electric vehicles, ships, spacecraft, etc. Here, electric toys may include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric steamship toys, electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, spacecraft, etc.

[0063] The technical solutions described in the embodiments of this application are applicable not only to the batteries and power consumption devices mentioned above, but to all batteries including housings and power consumption devices using batteries. However, for the sake of brevity, the following embodiments will all be described using electric vehicles as examples.

[0064] Referring to Figure 1, which is a schematic diagram of a vehicle 1 according to some embodiments of the present application, the vehicle 1 may be a gasoline vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle. Inside the vehicle 1, a battery 10 is installed, and the battery 10 may be installed in the bottom, head, or tail of the vehicle 1. The battery 10 is used to supply power to the vehicle 1, and for example, the battery 10 can 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 is used to control the battery 10 to supply power to the motor 12, and is used for, for example, starting the vehicle 1, navigation, and operating power consumption demands during driving.

[0065] In some embodiments of this application, the battery 10 functions not only as an operating power source for the vehicle 1 but also as a drive power source for the vehicle 1, and can provide the vehicle 1 with driving power as a substitute or partial substitute for fuel or natural gas.

[0066] To meet different power usage demands, the battery 10 may include a plurality of battery cells, which are the smallest units constituting a battery module or battery pack. The plurality of battery cells may be connected in series and / or parallel via electrode terminals to be used in a variety of application scenarios. The battery 10 referred to in this application includes a battery module or battery pack, where the plurality of battery cells may be connected in series, in parallel, or in series-parallel, with series-parallel connection referring to a mixture of series and parallel connections. The battery 10 may also be called a battery pack. In the embodiments of this application, the plurality of battery cells may directly constitute a battery pack, or a battery module may be constituted first, and then the battery module may constitute a battery pack.

[0067] Figure 2 is a schematic diagram of a battery 10 according to one embodiment of the present application. In Figure 2, the battery 10 includes a plurality of battery modules 20 and a housing 30, the plurality of battery modules 20 being housed inside the housing 30. The housing 30 houses the battery cells 21 or battery modules 20 to prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells. The housing 30 may be a single rectangular parallelepiped, or a simple three-dimensional structure such as a cylinder or sphere, or it may be a complex three-dimensional structure combining a rectangular parallelepiped, or a simple three-dimensional structure such as a cylinder or sphere, and is not limited to this in the embodiment of the present application. The material of the housing 30 may be an alloy material such as an aluminum alloy or an iron alloy, or a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material of glass fiber and epoxy resin, and is not limited to this in the embodiment of the present application.

[0068] In some embodiments, as shown in Figure 2, the housing 30 comprises a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 overlapping each other, and both the first portion 31 and the second portion 32 define 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, thereby defining a space for housing the battery cell 21 together. Both the first portion 31 and the second portion 32 are hollow structures with one end open, and the open side of the first portion 31 may be positioned to overlap the open side of the second portion 32.

[0069] Figure 3 is a schematic diagram of a battery module 20 according to one embodiment of the present application. In Figure 3, the battery module 20 may include a plurality of battery cells 21, and the plurality of battery cells 21 can first be connected in series, in parallel, or in series-parallel to constitute the battery module 20, and the plurality of battery modules 20 can be further connected in series, in parallel, or in series-parallel to constitute a battery. In the present application, the battery cells 21 may include lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, and the embodiments of the present application are not limited thereto. The battery cells 21 may be cylindrical, flattened, rectangular parallelepiped, or have other shapes, and the embodiments of the present application are not limited thereto. Generally, the battery cells 21 are divided into three types according to their packaging form: cylindrical battery cells, rectangular parallelepiped battery cells, and pouch battery cells, and the embodiments of the present application are not limited thereto.

[0070] Figure 4 is a schematic diagram of a battery cell 21 according to one embodiment of the present application. The battery cell 21 includes a casing 211, an end cap 212, and an electrode assembly 213.

[0071] The end cap 212 refers to a component that covers the opening of the casing 211 to isolate the internal environment of the battery cell 21 from the external environment. The shape of the end cap 212 can be adapted to the shape of the casing 211, although this is not limited to the end cap 212. Optionally, the end cap 212 may be manufactured from a material (e.g., aluminum alloy) that has a certain hardness and strength that resists deformation during pressure impacts, thereby increasing the structural strength of the battery cell 21 and improving safety performance. The material of the end cap 212 can be various, such as 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 can be further provided inside the end cap 212 to isolate electrical connection members within the casing 211 from the end cap 212, reducing the risk of short circuits. Exemplarily, the insulating member may be plastic, rubber, or the like.

[0072] The casing 211 is a component for fitting the end cap 212 to form the internal environment of the battery cell 21, where the formed internal environment is used to house the electrode assembly 213, electrolyte, and other components. The casing 211 and the end cap 212 may be separate components, and the internal environment of the battery cell 21 is formed by providing an opening in the casing 211 and placing the end cap 212 over the opening. Although not limited to this, the end cover 212 and the casing 211 may be integrated, but specifically, the end cap 212 and the casing 211 are formed on a common connection surface before other components enter the casing, and the end cap 212 is placed over the casing 211 when it is necessary to package the inside of the casing 211. The casing 211 can be of various shapes and sizes, such as a rectangular parallelepiped, cylindrical shape, or hexagonal prism shape. Specifically, the shape of the casing 211 can be determined by the specific shape and size of the cell assembly. The material of the casing 211 can be a wide variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, or plastic, and the embodiments of this application are not particularly limited thereto.

[0073] In some embodiments of this application, as shown in Figures 5 to 33, the application provides a battery 10 including a housing 30 and a battery array 20, the housing 30 having a housing cavity 34, and the battery array 20 being housed within the housing cavity 34, as shown in Figures 27 and 32, the battery array 20 being formed by arranging M × N battery cells 21 in M ​​rows and N columns, where M ≥ 1, N ≥ 1, and both M and N are positive integers. The battery cells 21 in each column of the battery array 20 are arranged along a first direction which is the longitudinal direction of the battery 10 or the travel direction of the power consumption device 1 having the battery 10, and the battery cells 21 in each row of the battery array 20 are arranged along a second direction which intersects with the first direction and each intersects with a vertical plane. As shown in Figure 29, the maximum size of the battery array 20 in the second direction is D1, and the maximum size of the housing cavity 34 in the second direction is D2, where D1 / D2 ∈ [0.9, 1].

[0074] In this application, the battery array 20 may have at least one row and one column configuration, two rows and one column configuration, one row and two columns configuration, or two rows and two columns configuration. Here, as shown in Figure 31, in the embodiment shown in the drawings of this application, the battery array 20 has a configuration of multiple rows (three or more rows) and multiple columns (three or more columns).

[0075] Furthermore, as shown in Figure 27, the battery 10 has a substantially rectangular structure and has a longitudinal direction, a width direction, and a height direction. The first direction coincides with the longitudinal direction of the battery 10 or the travel direction of the power consumption device 1, where the longitudinal direction and travel direction of the battery 10 may be the same or different. The second direction and the first direction are located in the same plane and intersect. In addition, this application further includes a third direction, and the third direction, the second direction, and the first direction intersect twice each.

[0076] Specifically, as shown in Figures 27 and 29, all battery cells 21 form a battery array 20, where each column of the battery array 20 is arranged along a first direction, and each row of the battery array 20 is arranged along a second direction, where the maximum size of the battery array 20 is D1 and the maximum size of the housing cavity 34 of the housing 30 is D2, and the value of D1 / D2 is set within the interval [0.9, 1], thereby increasing the occupancy rate of the battery array 20 within the housing 30, reducing the gap between the battery array 20 and the housing 30, and thus improving the space utilization rate of the battery 10, which is advantageous for improving the energy density of the battery 10.

[0077] In this application, please understand that the battery array 20 may also be referred to as the assembly of the battery 10.

[0078] Furthermore, the closer the value of D1 / D2 is to 1, the higher the space utilization rate of the battery 10. If the value of D1 / D2 is less than 0.9, the space utilization rate and energy density of the battery will decrease, and if the value of D1 / D2 is greater than 1, the battery array will not be able to be housed inside the enclosure. Therefore, by setting the value of D1 / D2 in the range of [0.9,1], it is possible to simultaneously satisfy the demands for mounting the battery array, increasing the space utilization rate of the battery, and increasing the energy density of the battery.

[0079] In this experiment, D1 / D2 may be a value of 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99...1.

[0080] In some embodiments of this application, as shown in Figure 29, the maximum size of the battery array 20 in the second direction is D1, and the maximum size of the housing cavity 34 in the second direction is D2, where D1 / D2 ∈ [0.99, 1].

[0081] Specifically, by further setting the D1 / D2 values ​​to the interval [0.99,1], the gap between the battery array 20 and the housing 30 becomes smaller, the space utilization rate within the housing 30 is further improved, and the space utilization rate and energy density of the battery 10 are further improved.

[0082] In this embodiment, the value of D1 / D2 can be 0.99, 0.992, 0.994, 0.996, 0.998, ...1.

[0083] The following will provide a detailed explanation using specific experimental data.

[0084] In the experimental process, as an example, let D1 be the maximum size of the battery 10 in the second direction, D2 be the maximum size of the housing cavity 34 in the second direction, and refer to Table 1 for details.

[0085] [Table 1]

[0086] As can be seen from the above embodiment, the energy density of the battery 10 gradually increases as the value of D1 / D2 approaches 1. Therefore, by appropriately controlling the value of D1 / D2, the performance of the battery 10 can be fully utilized, and it is possible to effectively guarantee that the battery 10 has a high energy density.

[0087] In some embodiments of this application, the longitudinal direction of the battery 10 is parallel to or intersects the direction of travel of the power consumption device 1.

[0088] In this application, the travel direction of the power consumption device 1 refers to the direction in which the power consumption device 1 can generate a relative displacement that allows it to move forward or backward. When the longitudinal direction of the battery 10 is parallel to the travel direction of the power consumption device 1, the longitudinal direction of the battery 10 is installed along the travel direction of the power consumption device 1. When the longitudinal direction of the battery 10 and the travel direction of the power consumption device 1 intersect, the longitudinal direction of the battery 10 is installed at an angle to the travel direction of the power consumption device 1, and this angle is not zero.

[0089] Specifically, by setting the relationship between the longitudinal direction of the battery 10 and the direction of travel of the power consumption device 1, the battery 10 can be attached to the power consumption device 1 according to the power consumption device 1's demand, thereby improving the convenience of arranging the battery 10 in the power consumption device 1.

[0090] In some embodiments of this application, as shown in Figure 33, the housing 30 includes at least one partition beam 33 installed within the housing 30 so as to divide at least two housing cavities 34 within the housing 30, and a battery array 20 is installed in each housing cavity 34.

[0091] The partition beam 33 is installed inside the housing 30, and both ends of the partition beam 33 are fixed. When there is only one partition beam 33, both ends of the partition beam 33 are connected and fixed to the inner wall of the housing 30, and the space of the housing 30 located on both sides of the partition beam 33 forms two housing cavities 34, and a battery array 20 can be installed in each housing cavity 34. When there are two or more partition beams 33, the internal space of the housing 30 can be partitioned by different installations of the partition beams 33 inside the housing 30, and multiple housing cavities 34 can be formed. The housing cavities 34 may be formed by being surrounded by multiple partition beams 33, or the housing cavities 34 may be formed by being surrounded by partition beams 33 and the housing 30.

[0092] Specifically, a partition beam 33 is provided inside the housing 30, and the housing cavity 34 is partitioned by the partition beam 33 inside the housing 30. By providing the partition beam 33 inside the housing 30, the overall strength of the housing 30 can be increased, and the partition beam 33 can protect the battery array 20, reducing damage to the battery array 20 due to impact.

[0093] The partition beam 33 may be a plate-like structure, a rod-like structure, or any other structure. The partition beam 33 and the housing 30 can be connected and fixed by adhesive, fastening, welding, etc., and the two partition beams 33 to be connected can also be connected and fixed by adhesive, fastening, welding, etc.

[0094] In some embodiments of this application, as shown in Figure 29, the housing 30 includes a frame 32 that is positioned along a first direction and intersects a second direction, the frame 32 forming a portion of the housing cavity 34, and a portion of the edge of the battery array 20 is connected to the frame 32.

[0095] Specifically, by connecting a portion of the edge of the battery array 20 to the frame 32, the gap between the battery array 20 and the housing 30 can be reduced, and the space utilization rate and energy density of the battery 10 can be further improved.

[0096] Furthermore, the frame 32 has greater strength than other parts of the housing 30, and by abutting the battery array 20 against the frame 32 of the housing 30 and supporting the battery array 20 with the high-strength frame 32, the support strength for the battery array 20 is improved, thereby reinforcing the housing 30's resistance to expansion of the battery array 20.

[0097] In some embodiments of this application, as shown in Figures 6 and 7, the battery cell 21 includes a plurality of surfaces, including a first surface 216, the first surface 216 being the surface with the largest area, the first surface 216 being positioned along a first direction and intersecting the horizontal plane, and along a second direction, the first surfaces 216 of two adjacent battery cells 21 in each row are positioned facing each other, and the first surfaces 216 of battery cells 21 closer to the frame 32 are connected to the frame 32.

[0098] Specifically, by connecting the largest surface area of ​​the battery cell 21 (first surface 216) to the frame 32, the support strength of the housing 30 for the battery cell 21 can be increased, thereby improving the expansion resistance of the battery 10.

[0099] Furthermore, by connecting the first surface 216 of the battery cell 21, which is close to the frame 32, to the frame 32, the contact area between the battery cell 21 and the frame 32 is increased, allowing heat to be conducted to the battery cell 21 through heat exchange with the frame 32. This enables heat dissipation to the battery cell 21 and further enhances the heat dissipation effect to the battery cell 21.

[0100] In some embodiments of this application, as shown in Figures 8 and 9, the battery cell 21 includes a plurality of surfaces, the plurality of surfaces including a first surface 216 and a second surface 217, the first surface 216 being the surface with the largest area, the second surface 217 having a smaller area than the first surface 216, the second surface 217 being positioned along a first direction and intersecting the horizontal plane, the first surface 216 being positioned along a second direction and intersecting the horizontal plane, the first surfaces 216 of two adjacent battery cells 21 in each row facing each other along the first direction, the second surfaces 217 of two adjacent battery cells 21 in each row facing each other along the second direction, and the second surfaces 217 of battery cells 21 closer to the frame 32 are connected to the frame 32.

[0101] Specifically, the first surface 216 is the surface with the largest area of ​​the battery cell 21, and the area of ​​the second surface 217 is smaller than the area of ​​the first surface 216. By setting the installation direction of the first surface 216 and the second surface 217, the battery array 20 can meet the demands of different batteries 10 and increase the applicability of the batteries 10.

[0102] Furthermore, the first surface 216 is the surface with the largest area of ​​the battery cell 21, and the first surface 216 is installed along the second direction and intersects the horizontal plane, and a heat conductive member 40 can be provided on one side of the first surface 216, and by using the heat conductive member 40 to make a thermal conductive connection with the first surface 216, the contact area between the heat conductive member 40 and the battery cell 21 is increased, and the heat dissipation efficiency of the battery cell 21 is further improved. In addition, by making the first surface 216 the surface with the largest area of ​​the battery cell 21, and the first surface 216 is installed along the second direction and intersects the horizontal plane, a corresponding reinforcing structure (such as a reinforcing beam or reinforcing rib) can be provided on the side of the housing 30 corresponding to the first surface 216 to enhance the protective performance of the battery cell 21.

[0103] Furthermore, based on the structures of the first surface 216 and the second surface 217, they can be combined with other surfaces of the battery cell 21 to form various types of battery cells 21, such as prismatic battery cells, blade battery cells, and one-stop battery cells.

[0104] In some embodiments of this application, as shown in Figures 10 and 12, the battery cell 21 includes a plurality of surfaces, the plurality of surfaces including a first surface 216 having the largest area, the first surfaces 216 of two adjacent battery cells 21 in each row facing each other along a first direction, the first surfaces 216 of two adjacent battery cells 21 in each row offset from each other along a second direction, and the first surfaces 216 of the battery cells 21 closest to the frame 32 are connected to the frame 32.

[0105] Specifically, the first surface 216 is the surface with the largest area of ​​the battery cell 21, and by placing the first surfaces 216 of two adjacent battery cells 21 in each row and the first surfaces 216 of two adjacent battery cells 21 in each column, the battery array 20 can meet the demands of different batteries 10 and increase the applicability of the batteries 10.

[0106] Furthermore, the first surface 216 is the surface with the largest area of ​​the battery cell 21, and the first surface 216 is installed along the second direction and intersects with the horizontal plane, and the first surface 216 is connected to the frame 32, which increases the contact area between the battery cell 21 and the frame 32, allowing the battery cell 21 to conduct heat to the frame 32 in a heat exchange manner, thereby achieving heat dissipation to the battery cell 21 and further enhancing the heat dissipation effect to the battery cell 21.

[0107] In this embodiment, the battery cell formed by combining the structure of the first surface 216 with the other surfaces of the battery cell 21 may have a cylindrical structure.

[0108] In some embodiments of this application, as shown in Figures 11 and 12, the battery cell 21 includes a plurality of surfaces, the plurality of surfaces including a first surface 216 with the largest area, the first surfaces 216 of two adjacent battery cells 21 in each row are offset along a first direction, the first surfaces 216 of two adjacent battery cells 21 in each row are facing each other along a second direction, and the first surfaces 216 of the battery cells 21 closest to the frame 32 are connected to the frame 32.

[0109] Specifically, the first surface 216 is the surface with the largest area of ​​the battery cell 21, and by placing the first surfaces 216 of two adjacent battery cells 21 in each row and the first surfaces 216 of two adjacent battery cells 21 in each column, the battery array 20 can meet the demands of different batteries 10 and increase the applicability of the batteries 10.

[0110] Furthermore, the first surface 216 is the surface with the largest area of ​​the battery cell 21, and the first surface 216 is installed along the second direction and intersects the horizontal plane, and a heat conductive member 40 can be provided on one side of the first surface 216, and by using the heat conductive member 40 to make a thermal conductive connection with the first surface 216, the contact area between the heat conductive member 40 and the battery cell 21 is increased, and the heat dissipation efficiency of the battery cell 21 is further improved. In addition, by making the first surface 216 the surface with the largest area of ​​the battery cell 21, and by installing the first surface 216 along the second direction and intersecting the horizontal plane, a corresponding reinforcing structure (such as a reinforcing beam or reinforcing rib) can be provided on the side of the housing 30 corresponding to the first surface 216 to enhance the protective performance of the battery cell 21.

[0111] In this embodiment, the battery cell formed by combining the structure of the first surface 216 with the other surfaces of the battery cell 21 may have a cylindrical structure.

[0112] In some embodiments of this application, in the battery array 20, M≧2, and adhesive is placed between two adjacent battery cells 21 in each row.

[0113] Specifically, when the battery array 20 is installed in an M row and N column configuration, and there are two or more battery cells 21 in each row, the method of connecting and fixing two adjacent battery cells 21 in each row using adhesive has a simple structure, facilitates the assembly process, and thereby can speed up the production pace and improve production efficiency.

[0114] The adhesive used to connect two adjacent battery cells 21 in each row may be a paste or a double-sided adhesive.

[0115] Furthermore, in this application, the rows in the battery array 20 may be arranged along a first direction or along a second direction.

[0116] In some embodiments of this application, in the battery array 20, N≧2, and in each row of battery cells 21, an adhesive is placed between two adjacent battery cells 21.

[0117] The adhesive used to connect two adjacent battery cells 21 in each row may be a paste or a double-sided adhesive.

[0118] Furthermore, in this application, the rows in the battery array 20 may be arranged along a first direction or along a second direction.

[0119] Specifically, when the battery array 20 is installed in an M row and N columns, and there are two or more battery cells 21 in each column, the method of connecting and fixing two adjacent battery cells 21 in each column using adhesive has a simple structure, facilitates the assembly process, and thereby can speed up the production pace and improve production efficiency.

[0120] In some embodiments of this application, two adjacent battery cells 21 are installed spaced apart.

[0121] Specifically, in this application, the battery array 20 consists of M rows and N columns. When both M rows and N columns are greater than 1, two adjacent battery cells 21 are spaced apart in each row, and two adjacent battery cells 21 are spaced apart in each column. By spaced-apart the adjacent battery cells 21, direct contact between them can be avoided. When a battery cell 21 deforms, the impact on adjacent battery cells 21 can be reduced, thereby increasing the safety of the battery 10 during use.

[0122] Furthermore, the battery cell 21 may expand during use. If two adjacent battery cells 21 come into contact and one battery cell 21 expands, it will press against the other battery cell 21, which will affect the performance of the other battery cell 21.

[0123] Furthermore, assuming that demand is met, a smaller distance between two adjacent battery cells 21 contributes to improving the space utilization rate and energy density of the battery 10.

[0124] In some embodiments of this application, in the battery array 20, M≧2, and in each row of battery cells 21, a partition member is installed between two adjacent battery cells 21.

[0125] Specifically, by providing a partition between two adjacent battery cells 21 in each row, the two adjacent battery cells 21 can be installed with a gap between them. This reduces the adverse effects between the two adjacent battery cells 21, allowing the battery 10 to perform to its full potential and improving the safety of the battery 10 during use.

[0126] Furthermore, by providing a partition member between two adjacent battery cells 21 in each row, the overall strength of the battery array 20 can be increased, thereby reducing adverse effects on the battery array 20 due to external factors such as vibration, and effectively improving the adaptability of the battery 10.

[0127] In some embodiments of this application, in the battery array 20, N≧2, and in each row of battery cells 21, a partition member is installed between two adjacent battery cells 21.

[0128] Specifically, by providing a partition between two adjacent battery cells 21 in each row, the two adjacent battery cells 21 can be installed with some space between them. This reduces the adverse effects between the two adjacent battery cells 21, allowing the battery 10 to perform to its full potential and improving the safety of the battery 10 during use.

[0129] Furthermore, by providing a partition member between two adjacent battery cells 21 in each row, the overall strength of the battery array 20 can be increased, thereby reducing adverse effects on the battery array 20 due to external factors such as vibration, and effectively improving the adaptability of the battery 10.

[0130] In some embodiments of this application, the partition member includes at least one of a heat conduction member 40, a buffer member, and a partition plate.

[0131] Specifically, by using at least one of the heat conduction member 40, buffer member, partition plate, and partition beam 33 as the partition member, two adjacent battery cells 21 can be separated, and a corresponding partition member can be provided according to different demands, so that the battery array 20 can meet the corresponding usage demands.

[0132] In some embodiments of this application, the partition member is a buffer member, which is installed between two adjacent battery cells 21, and the buffer member can absorb tolerances that occur during the manufacturing process of the two adjacent battery cells 21, ensuring efficient mounting of the battery cells 21, and the buffer member can provide a buffer between the two adjacent battery cells 21, reducing the risk of the two adjacent battery cells 21 being pressed against each other and damaged.

[0133] In some embodiments of this application, the partition member is a partition plate, which is installed between two adjacent battery cells 21, and the partition plate is used to separate the two adjacent battery cells 21 and prevent them from being pressed against each other and damaged.

[0134] In some embodiments of this application, as shown in Figures 27 to 30, the partition member includes a heat conduction member 40 installed along a first direction and intersecting in a second direction, the heat conduction member 40 installed on at least one side of each row of battery cells 21, and each row of battery cells 21 is thermally connected to one heat conduction member 40.

[0135] Specifically, a heat conduction member 40 is provided, which is installed inside the housing 30 of the battery 10, and is installed along a first direction. At least one side of each row of battery cells 21 is thermally connected to the heat conduction member 40, enabling efficient heat dissipation to each row of battery cells 21, thereby maintaining the battery cells 21 within a relatively safe operating temperature range, and further improving the safety of using the battery 10.

[0136] Furthermore, the surface on which the battery cell 21 and the heat conductive member 40 are thermally connected may be the surface of the battery cell 21 with the largest surface area. In this case, the contact area between the heat conductive member 40 and the battery cell 21 can be increased, thereby improving the heat dissipation performance of the battery cell 21. The surface on which the battery cell 21 and the heat conductive member 40 are thermally connected may be the surface with the largest surface area to satisfy the requirements of different mounting layouts in the battery cell 21.

[0137] Alternatively, a heat conductive member 40 may be provided on one side of each row of battery cells 21, or heat conductive members 40 may be provided on both sides to meet the heat dissipation requirements of the battery 10.

[0138] In some embodiments of this application, the heat conduction member 40 may be an electronic cooling fin such as a PTC.

[0139] In some embodiments of this application, as shown in Figure 30, the battery cell 21 includes an electrode assembly 213 which 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 in a second direction, the projections of the heat conductive member 40 and the body portion 2131 overlap at least partially and have an overlapping region.

[0140] Specifically, during use of the battery cell 21, the heat generated is mainly concentrated in the main body 2131 of the electrode assembly 213. By providing an overlapping region between the heat conductive member 40 and the main body 2131, efficient heat dissipation between the main body 2131 and the heat conductive member 40 is enabled, improving the heat exchange performance of the heat conductive member 40 with respect to the main body 2131, thereby maintaining the battery cell 21 at a safe temperature and enhancing safety during use.

[0141] As shown in Figures 29 and 30, in some embodiments of this application, along the third direction, the size of the main body 2131 is L1, the size of the heat conductive member 40 is L2, and the first, second, and third directions intersect twice each, where 0.5 ≤ L2 / L1 ≤ 1.5.

[0142] In this embodiment, by setting the range value of L2 / L1 to the interval [0.5, 1.5], the space occupied by the heat conductive member 40 in the third direction can be reduced, thereby further improving the space utilization rate of the battery 10.

[0143] Furthermore, if L2 / L1 is less than 0.5, the size of the heat conductive member 40 is too small, preventing efficient heat exchange to the battery cell 21. If L2 / L1 is greater than 1.5, the size of the heat conductive member 40 is large, which tends to occupy space in the battery 10, making it unfavorable to increase the space utilization rate of the battery 10.

[0144] In this embodiment, L2 / L1 can take values ​​of 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, ..., 1.5.

[0145] In some embodiments of this application, in the third direction, the size of the overlapping region is L3, and 0.5 ≤ L3 / L1 ≤ 1.

[0146] In this embodiment, by setting the size of the overlapping region in the third direction, the heat exchange area between the heat conduction member 40 and the main body 2131 can be rationally set, and the heat exchange effect of the heat conduction member 40 with respect to the main body 2131 can be greatly improved.

[0147] In some embodiments of this application, the size of the overlapping region in the third direction is L3 (0.1 ≤ L3 / L1 ≤ 1).

[0148] In this embodiment, by setting the size of the overlapping region in the third direction, the heat exchange area between the heat conduction member 40 and the main body 2131 can be rationally set, and the heat exchange effect of the heat conduction member 40 with respect to the main body 2131 can be greatly improved.

[0149] Furthermore, 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, which reduces the heat exchange effect of the heat conductive member 40 on the battery cell 21 and makes it impossible to efficiently guarantee heat dissipation to the battery cell 21.

[0150] In this embodiment, L3 / L1 can take values ​​of 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0151] In some embodiments of this application, a passage for housing a heat exchange medium is provided within the heat conduction member 40.

[0152] Specifically, a media circulation device is connected to the heat conduction member 40, and a heat exchange medium (such as water or oil) is filled 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 away the heat exchanged with the battery cell 21. This heat exchange method has high heat exchange efficiency and a simple structure.

[0153] In some embodiments of this application, as shown in Figures 27 and 28, the battery 10 further comprises a current collector 50 that is in fluid communication with a heat conductive member 40, wherein the current collector 50 is installed at one end of the heat conductive member 40 in a first direction, or current collectors 50 are installed at both ends of the heat conductive member 40 in a first direction.

[0154] Specifically, the current collector 50 is installed at one or both ends of the heat conduction member 40 in the first direction. By providing the current collector 50, the heat exchange medium within the heat conduction member 40 is collected, the number of parts can be reduced, and this improves the space utilization rate within the housing 30.

[0155] Furthermore, when the battery 10 is subjected to pressure or impact in the second direction, the installation position of the current collector 50 allows the pressure or impact to dissipate, reducing the possibility of damage to the current collector 50, and allowing the heat exchange medium to sufficiently dissipate heat from the battery 10, further reducing safety concerns due to the battery 10 being too hot.

[0156] In some embodiments of this application, there are two current collectors 50, the two current collectors 50 are installed at one end of the heat conduction member 40 located in a first direction, and the two current collectors 50 are arranged along a third direction, with the first, second, and third directions intersecting twice each.

[0157] Specifically, by providing two current collectors 50, the current collection performance of the heat exchange medium is improved, the heat exchange medium can have a good flow rate, and the heat exchange capacity of the heat exchange medium to the battery cell 21 is further improved.

[0158] Furthermore, by providing both 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.

[0159] In some embodiments of this application, the partition member includes a heat conduction member 40 positioned along a second direction and intersecting a first direction, wherein the heat conduction member 40 is positioned on at least one side of each row of battery cells 21, and each row of battery cells 21 is thermally connected to one heat conduction member 40.

[0160] Specifically, a heat conduction member 40 is provided, which is installed inside the housing 30 of the battery 10, and is installed along a second direction. By thermally conducting heat to at least one side of each row of battery cells 21, efficient heat dissipation of each row of battery cells 21 becomes possible, the battery cells 21 can be kept within a relatively safe operating temperature range, and the safety of using the battery 10 is further improved.

[0161] Furthermore, the surface on which the battery cell 21 and the heat conductive member 40 are thermally connected may be the surface of the battery cell 21 with the largest surface area. In this case, the contact area between the heat conductive member 40 and the battery cell 21 can be increased, thereby improving the heat dissipation performance of the battery cell 21. The surface on which the battery cell 21 and the heat conductive member 40 are thermally connected may be the surface with the largest surface area to satisfy the requirements of different mounting layouts in the battery cell 21.

[0162] Alternatively, a heat conductive member 40 may be provided on one side of each row of battery cells 21, or heat conductive members 40 may be provided on both sides to meet the heat dissipation requirements of the battery 10.

[0163] In this application, the heat conduction member 40 may be an electronic cooling fin (for example, a PTC), and the heat conduction member 40 may be a component that provides a passage for housing a heat exchange medium.

[0164] In some embodiments of this application, the battery cell 21 is fixedly connected to the housing 30 by a first adhesive layer 60, and the battery 10 further comprises a heat conductive member 40 that is thermally conductively connected to the battery cell 21 by a second adhesive layer 70, wherein the thermal conductivity of the first adhesive layer 60 is less than or equal to the thermal conductivity of the second adhesive layer 70.

[0165] Specifically, the first adhesive layer 60 is used to connect and fix the battery cell 21 to the housing 30, and the second adhesive layer 70 is used to thermally connect the battery cell 21 to the heat conductive member 40. Therefore, by setting the thermal conductivity of the first adhesive layer 60 to be less than or equal to that of the second adhesive layer 70, it is ensured that heat is more effectively dissipated from the battery cell 21 via the heat conductive member 40.

[0166] In some embodiments of this application, the ratio of the thermal conductivity of the first adhesive layer 60 to the thermal conductivity of the second adhesive layer 70 is in the range of 0.1 to 1.

[0167] Specifically, all of the above ratio range settings allow the heat conductive member 40 to effectively dissipate heat from the battery cell 21.

[0168] Furthermore, if the ratio of the thermal conductivity of the first adhesive layer 60 to the thermal conductivity of the second adhesive layer 70 is greater than 1, the thermal conductivity of the first adhesive layer 60 is poor, and the side of the battery cell 21 connected to the first adhesive layer 60 cannot transfer heat through one side of the first adhesive layer 60. In this case, transferring heat through only one side of the second adhesive layer 70 is insufficient to guarantee adequate heat dissipation for the battery cell 21. If the ratio of the thermal conductivity of the first adhesive layer 60 to the thermal conductivity of the second adhesive layer 70 is less than 0.1, the thermal conductivity of the first adhesive layer 60 becomes stronger than that of the second adhesive layer 70, weakening the heat dissipation capacity of the battery cell 21 by the heat conductive member 40, and reducing the heat dissipation effect of the battery cell 21.

[0169] Furthermore, the ratio of the thermal conductivity of the first adhesive layer 60 to the thermal conductivity of the second adhesive layer 70 may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0170] Furthermore, in this embodiment, the first adhesive layer 60 and the second adhesive layer 70 may be made of the same adhesive, but their thermal conductivity may differ, that is, the thermal conductivity of the first adhesive layer 60 may be lower than that of the second adhesive layer 70. For example, the first adhesive layer 60 and the second adhesive layer 70 may each be made of a thermally conductive polyurethane adhesive layer, and different amounts of thermally conductive particles may be added therein to achieve different thermal conductivity.

[0171] 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 filling adhesive, a pressure-sensitive adhesive, a potting adhesive, etc., and the second adhesive layer 70 may be a thermally conductive adhesive, etc.

[0172] In some embodiments of this application, the battery cell 21 includes electrode terminals 214 located on at least one of a plurality of surfaces.

[0173] Specifically, electrode terminals 214 are provided to enable electrical discharge to the battery cell 21 via the terminals of the battery 10, thereby ensuring that the charging and discharging operations of the battery cell 21 can be performed efficiently.

[0174] The battery cell 21 has multiple surfaces, and the electrode terminals 214 may be placed on the corresponding surfaces of the battery cell 21 as needed.

[0175] In some embodiments of this application, as shown in Figures 7, 9, and 12, the multiple surfaces further have a third surface 218, the first surface 216, the second surface 217, and the third surface 218 intersect in pairs, and the electrode terminals 214 are mounted on the third surface 218.

[0176] Specifically, the battery cell 21 includes multiple surfaces, including a first surface 216 with the largest area, while the areas of the second surface 217 and the third surface 218 are both smaller than the area of ​​the first surface 216. By setting the position of the electrode terminals 214, the battery cell 21 can meet the mounting needs of batteries 10 with different configurations, and further enhance the applicability range of the battery cell 21.

[0177] Furthermore, by providing the electrode terminals 214 on the third surface 218, the first surface 216 and the heat conductive member 40 can be thermally connected, preventing interference between the electrode terminals 214 and the heat conductive member 40, ensuring effective heat conduction between the heat conductive member 40 and the battery cell 21, and further enhancing the heat dissipation effect of the heat conductive member 40 to the battery cell 21.

[0178] In some embodiments of this application, there are two third surfaces 218, the two third surfaces 218 are positioned opposite each other and intersect with the first surface 216, and the battery cell 21 includes two electrode terminals 214 with opposite polarity, as shown in Figures 7 and 9, the two electrode terminals 214 with opposite polarity are positioned on one third surface 218, or the two electrode terminals 214 with opposite polarity are positioned on two of the third surfaces 218.

[0179] Specifically, as shown in Figures 7, 9, 18, and 20, the battery cell 21 includes multiple surfaces, which include a first surface 216, a second surface 217, and a third surface 218. The first surface 216 is the surface with the largest area, while the areas of the second surface 217 and the third surface 218 are both smaller than the area of ​​the first surface 216.

[0180] As shown in Figure 7 or Figure 18, when the first surface 216 is positioned along a first direction and intersects the horizontal plane, and the two third surfaces 218 are positioned opposite each other in the first direction, two electrode terminals 214 with opposite polarity can each be placed on one third surface 218, and two electrode terminals 214 with opposite polarity can each be placed on two third surfaces 218.

[0181] As shown in Figure 9 or Figure 20, when the first surface 216 is positioned along the second direction and intersects the horizontal plane, and when the two third surfaces 218 are positioned opposite each other in the second direction, two electrode terminals 214 with opposite polarities can each be positioned on one third surface 218, or two electrode terminals 214 with opposite polarities can each be positioned on two separate third surfaces 218.

[0182] By setting the position of the electrode terminals 214, the mounting needs of batteries 10 with different battery cell configurations can be met, and the range of application of the battery cell 21 can be further improved.

[0183] In some embodiments of this application, as shown in Figures 14 and 16, 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 in a first direction (shown in Figure 14) or a second direction (shown in Figure 16), with two intersections each of the second direction, the first direction and the third direction. Recesses are provided on the edge of the fourth surface, and the first surface 216 is for mounting electrode terminals 214, which are positioned protruding from the first surface 216 in the second direction and corresponding to the recesses.

[0184] Specifically, the battery cell 21 includes multiple surfaces, including a first surface 216 with the largest area, and these multiple surfaces further include a fourth surface, with the fourth surface and the first surface 216 facing each other in a first or second direction. Of the two adjacent battery cells 21 in the battery array 20, the electrode terminals 214 of one battery cell 21 are positioned corresponding to the recesses of the other battery cell 21, and the interlocking structure makes the combined structure of the two adjacent battery cells 21 more compact, thereby making the structure of the battery array 20 more compact and contributing to an improvement in the space utilization rate and energy density of the battery 10.

[0185] By setting the position of the electrode terminals 214, the mounting needs of batteries 10 with different battery cell configurations can be met, and the range of application of the battery cell 21 can be further improved.

[0186] In some embodiments of this application, as shown in Figures 21 to 24, the multiple surfaces further include a third surface 218, and the first surface 216, second surface 217, and third surface 218 intersect in pairs, with the third surface 218 being the surface with the largest area, and the areas of the first surface 216 and second surface 217 being smaller than the area of ​​the third surface 218.

[0187] Specifically, as shown in Figure 24, the first surface 216 is installed along a first direction and intersects the horizontal plane, and the second surface 217 is installed along a second direction and intersects the horizontal plane, or as shown in Figure 22, the first surface 216 is installed along a second direction and intersects the horizontal plane, and the second surface 217 is installed along a first direction and intersects the horizontal plane. The electrode terminals 214 can be provided on the first surface 216 or the second surface 217, and by setting the position of the electrode terminals 214, the mounting needs of batteries 10 with different battery cell configurations can be met, and the range of application of the battery cell 21 can be further improved.

[0188] In some embodiments of this application, as shown in Figure 12, the battery cell 21 includes two electrode terminals 214 with opposite polarity, the two electrode terminals 214 with opposite polarity being mounted on a third surface 218, or one of the two electrode terminals 214 with opposite polarity being mounted on the third surface 218, and the casing 211 of the battery cell 21 constitutes the other of the two electrode terminals 214 with opposite polarity.

[0189] Specifically, the battery cell 21 includes multiple surfaces, including a first surface 216 with the largest area, while the areas of the second surface 217 and the third surface 218 are both smaller than the area of ​​the first surface 216. By setting the position of the electrode terminals 214, the battery cell 21 can meet the mounting needs of batteries 10 with different configurations, and further enhance the applicability range of the battery cell 21.

[0190] In some embodiments of this application, as shown in Figures 5 and 6, each row of battery cells 21 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along a first direction.

[0191] In particular, at least two or more battery cells 21 are arranged along the first direction, facilitating the layout of the battery cells 21 inside the housing 30.

[0192] Furthermore, when at least two battery cells 21 are arranged along the first direction, the widest 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.

[0193] In some embodiments of this application, along a first direction, the maximum size of the battery cell 21 is L, and along a second direction, the maximum size of the battery cell 21 is D, where the range of L / D is 1 to 30.

[0194] Specifically, as shown in Figure 7, by setting the size of the battery cell 21 in the first and second directions, with L being the maximum size in the first direction and D being the maximum size in the second direction, the energy density of the battery cell 21 can be maximized.

[0195] Furthermore, if the L / D size ratio is greater than 30, the size of the battery cell 21 in the first direction becomes too large, making installation difficult and reducing the support strength of the battery cell 21. If the L / D size ratio is less than 1, the size of the battery cell 21 in the first direction becomes too small, reducing the amount of electricity in the battery cell 21.

[0196] The L / D value can be 1, 2, 3, 4, 5, 6, 7, 8, ..., 30. By setting L / D to different values, the battery cell 21 can be made into different shapes, and the demand for different types of batteries 10 can be met.

[0197] In some embodiments of this application, the maximum size of the battery cell 21 is L along the first direction, and the maximum size of the battery cell 21 is H along the second direction, with the L / H range being 0.5 to 6, and the first, second, and third directions intersect in pairs.

[0198] Specifically, as shown in Figure 7, in Figure 7, the maximum size of the battery cell 21 in the first direction is L, and the maximum size of the battery cell 21 in the third direction is H. The battery cells 21 are installed in the above size ratio, and the amount of electricity in the battery cells 21 can be maximized while ensuring the support strength of the battery cells 21.

[0199] Furthermore, if the L / H size ratio is greater than 6, the size of the battery cell 21 in the first direction becomes too large, making installation difficult and reducing the support strength of the battery cell 21. If the L / H size ratio is less than 0.5, the size of the battery cell 21 in the third direction becomes too large, making installation difficult and reducing the support strength of the battery cell 21.

[0200] The L / H value can 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 made into different shapes, thereby meeting the demand for different types of batteries 10.

[0201] In some embodiments of this application, along the second direction, N×D=n×D2, where n∈[0.7,1].

[0202] Specifically, by setting the ratio of N×D to D2, the battery array 20 can be made to fit the housing 30 of the battery 10, and while satisfying the mounting requirements for the battery array 20, the space utilization efficiency of the battery 10 can be effectively improved, thereby effectively increasing the energy density of the battery 10.

[0203] Furthermore, if the value of n is less than 0.7, the battery's space utilization rate and energy density will decrease, and if the value of n is greater than 1, the battery array cannot be housed inside the enclosure. Therefore, by setting the value of n in the range of [0.7, 1], it is possible to simultaneously satisfy the demands for mounting the battery array, increasing the battery's space utilization rate, and increasing the battery's energy density.

[0204] n can take values ​​of 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, ..., 1. By setting n to a different value, the space utilization rate within the housing 30 is improved, contributing to an improvement in the space utilization rate and energy density of the battery 10.

[0205] In some embodiments of this application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 being flattened in a wound structure, the outer surface of the electrode assembly 213 having two flattened surfaces which face each other along a second direction, or the electrode assembly 213 being a stacked structure, the first electrode plate, separator and second electrode plate of the electrode assembly 213 being stacked along a second direction.

[0206] The electrode assembly 213 is a component that causes an electrochemical reaction within the battery cell 21. The battery cell 21 may contain one or more electrode assemblies 213. The electrode assembly 213 is mainly formed by winding or stacking electrode plates (positive electrode plate and negative electrode plate), and usually a separator is installed 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 2131, or they may be located at both ends of the main body portion 2131, respectively.

[0207] Specifically, by setting the electrode assembly 213 in a flattened shape with a wound structure, and setting the outer surface of the electrode assembly 213 to include two flattened surfaces, with the two flattened surfaces facing 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 second direction is reduced, facilitating the layout and mounting of other components of the battery 10 in the second direction.

[0208] A second aspect of this application provides a power consumption device 1, which includes the battery 10 described above, and the battery 10 is used to supply electrical energy to power the power consumption device 1.

[0209] In some embodiments of this application, when the longitudinal direction of the battery 10 and the travel direction of the power consumption device 1 are different, the first direction is the travel direction of the power consumption device 1.

[0210] In this embodiment, the first direction is set as the travel direction of the power consumption device 1, and the third direction is set to intersect the first direction and the horizontal direction. The battery cell 21 located inside the housing 30 of the battery 10 has a first surface 216 on which electrode terminals 214 are installed and a second surface 217 connected to the housing 30. The setting of the first direction facilitates the installation and layout of the battery 10 to the power consumption device 1, and by adjusting the arrangement method of the battery cell 21 inside the housing 30, different usage requirements for the power consumption device 1 can be met.

[0211] 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, to enable implementation based on the contents of the specification, and to make the above and other objectives, features, and advantages of this application clearer and easier to understand, specific embodiments of this application are given below.

[0212] In embodiments of this application, as shown in Figures 1 to 34, the application provides a battery 10 including a housing 30 and a battery array 20, the housing 30 having a housing cavity 34, the battery array 20 being housed in the housing cavity 34, the battery array 20 being formed by arranging M × N battery cells 21 in M ​​rows and N columns, where M ≥ 1 and N ≥ 1, and both M and N are positive integers. The battery cells 21 in each column of the battery array 20 are arranged along a first direction which is the longitudinal direction of the battery 10 or the travel direction of the power consumption device 1 having the battery 10, the battery cells 21 in each row of the battery array 20 are arranged along a second direction, the second direction and the first direction intersect and each intersects a vertical plane. The maximum size of the battery array 20 in the second direction is D1, and the maximum size of the housing cavity 34 in the second direction is D2, where D1 / D2 ∈ [0.9, 1].

[0213] Specifically, all battery cells 21 form a battery array 20, where each column of the battery array 20 is arranged along a first direction, and each row of the battery array 20 is arranged along a second direction, where the maximum size of the battery array 20 is D1 and the maximum size of the housing cavity 34 of the housing 30 is D2, and the value of D1 / D2 is set within the interval [0.9,1], thereby increasing the occupancy rate of the battery array 20 within the housing 30, reducing the gap between the battery array 20 and the housing 30, and thus improving the space utilization rate of the battery 10, which is advantageous for improving the energy density of the battery 10.

[0214] Furthermore, the values ​​of D1 / D2 are set to the interval [0.99, 1].

[0215] Furthermore, the enclosure 30 includes partition beams 33, and there is at least one partition beam 33, and the housing cavity 34 within the enclosure 30 is formed by being partitioned by the partition beams 33.

[0216] Furthermore, the housing 30 has a frame 32 that is installed along a first direction and intersects with a second direction, and a portion of the edge of the battery array 20 is connected to the frame 32.

[0217] Furthermore, the battery cell 21 includes a plurality of surfaces, including a first surface 216, a second surface 217, and a third surface 218. When the first surface 216 consists of the two surfaces with the largest area, the two first surfaces 216 are installed facing each other along a first direction, and in this case, the second surfaces 217 of two adjacent battery cells 21 in each row are installed facing each other, and the second surfaces 216 of two adjacent battery cells 21 in each row are installed facing each other. If the first surface 216 is the largest surface and there are two of them, the two first surfaces 216 are installed facing each other in the first direction, in which case the first surfaces 216 of two adjacent battery cells 21 in each column are installed facing each other, and the second surfaces 217 of two adjacent battery cells 21 in each row are installed facing each other. If the first surface 216 is the largest surface and there is one of it, the first surface 216 can constitute the outer periphery of the battery cell 21, in which case the two adjacent battery cells 21 in each column are installed in a line along the first direction, and the two adjacent battery cells 21 in each row are installed offset from each other, or the two adjacent battery cells 21 in each row are installed in a line along the first direction, and the two adjacent battery cells 21 in each column are installed offset from each other.

[0218] 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 of the L / D value is 1 to 30. In the third direction, the maximum size of the battery cell 21 is H, where the range of the L / H value is 0.5 to 6.

[0219] Furthermore, the battery cell 21 includes electrode terminals 214, each electrode terminal 214 including two electrode terminals 214 with opposite polarity, and the two electrode terminals 214 with opposite polarity may be located on the same surface of the battery cell 21, or on different surfaces of the battery cell 21, or one may be located on the surface of the battery cell 21 and the other may be formed by the cell casing 211 of the battery 10.

[0220] Furthermore, a pressure release mechanism 215 is installed in the battery cell 21, and the pressure release mechanism 215 may be installed on any one of the first surface 216, the second surface 217, and the third surface 218. In the configuration shown in the drawings of this specification, both the pressure release mechanism 215 and the electrode terminals 214 are installed on the first surface 216.

[0221] Furthermore, in 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.

[0222] Furthermore, in 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.

[0223] Furthermore, in the third direction, the size of the overlapping region is L3, and 0.5 ≤ L3 / L1 ≤ 1.

[0224] Furthermore, the battery 10 further includes a current collector 50 which is installed at the end of the heat conductive member 40 located in the first direction and communicates with the heat exchange medium passage of the heat conductive member 40.

[0225] Finally, it should be noted that the above embodiments are used solely to illustrate the technical concepts of this application and are not limiting. While this application has been described in detail with reference to the embodiments described herein, as those skilled in the art will understand, it is still possible to modify the technical concepts described in the embodiments described herein, or to substitute some or all of their technical features with equivalent ones. Such modifications or substitutions should not deviate the essence of the corresponding technical concepts from the scope of the technical concepts of the embodiments of this application and should be included within the scope of the claims and specification of this application. In particular, the technical features mentioned in each embodiment may be combined in any manner, provided there is no structural inconsistency. This application is not limited to the specific embodiments disclosed herein and includes all technical concepts included in the claims. [Explanation of symbols]

[0226] 1: Power consumption device; 10: Battery, 11: Controller, 12: Motor; 20: Battery array, 21: Battery cell, 211: Casing, 212: End cap, 213: Electrode assembly, 2131: Main body, 2132: Tab, 214: Electrode terminal, 215: Pressure release mechanism, 216: First surface, 217: Second surface, 218: Third surface; 30: enclosure, 31: first part, 32: second part, 321: frame, 33: partition beam, 34 is the housing cavity; 40: Thermal conductive material; 50: Current collector; 60: 1st adhesive layer; 70: Second adhesive layer.

Claims

1. It is a battery, A housing (30) having a housing cavity, A battery array housed in the aforementioned housing cavity, which is formed by arranging M × N battery cells (21) in an M row and N column, where M ≥ 1, N ≥ 1, and both M and N are positive integers, The battery cells (21) in each row of the battery array are arranged along a first direction, the first direction being the longitudinal direction of the battery or the direction of travel of the power consumption device having the battery, and the battery cells (21) in each row of the battery array are arranged along a second direction, the second direction and the first direction intersect and each intersects a vertical plane, The maximum size of the battery array in the second direction is D1, and the maximum size of the housing cavity in the second direction is D2, where D1 / D2 ∈ [0.9, 1]. In the aforementioned battery array, M ≥ 2, and in each row of the battery cells (21), a partition member is installed between two adjacent battery cells (21). Alternatively, in the battery array, N ≥ 2, and in each row of the battery cells (21), a partition member is installed between two adjacent battery cells (21). The partition member includes a heat conductive member (40), The heat conductive member (40) is installed along the first direction and intersects the second direction, and the heat conductive member (40) is installed on at least one side of the battery cells (21) in each row, and each of the battery cells (21) in each row is thermally connected to one of the heat conductive members (40). Alternatively, the heat conductive member (40) is installed along the second direction and intersects the first direction, and the heat conductive member (40) is installed on at least one side of the battery cells (21) in each row, and each of the battery cells (21) in each row is thermally conductively connected to one of the heat conductive members (40).

2. The battery according to claim 1, characterized in that D1 / D2 ∈ [0.99, 1].

3. The battery according to claim 1, characterized in that the longitudinal direction of the battery is parallel to or intersects with the direction of travel of the power consumption device.

4. The battery according to claim 1, wherein the housing (30) comprises at least one partition beam installed within the housing (30) so as to divide at least two of the housing cavities within the housing (30), and the battery array is installed in each of the housing cavities.

5. The battery according to claim 1, wherein the housing (30) includes a frame (321) installed along the first direction and intersecting the second direction, the frame (321) constitutes a portion of the housing cavity, and a portion of the edge of the battery array is connected to the frame (321).

6. The battery according to claim 5, wherein the battery cell (21) includes a plurality of surfaces, the plurality of surfaces include a first surface (216), the first surface (216) is the surface with the largest area, the first surface (216) is positioned along a first direction and intersects a horizontal plane, and along a second direction, the first surfaces (216) of two adjacent battery cells in each row of the battery cell (21) are positioned facing each other, and the first surface (216) of the battery cell (21) closest to the frame (321) is connected to the frame (321).

7. The battery according to claim 5, wherein the battery cell (21) includes a plurality of surfaces including a first surface (216) and a second surface (217), the first surface (216) being the surface with the largest area, the second surface (217) having a smaller area than the first surface (216), the second surface (217) being positioned along the first direction and intersecting the horizontal plane, the first surface (216) being positioned along the second direction and intersecting the horizontal plane, the first surfaces (216) of two adjacent battery cells in each row of the battery cell (21) being positioned opposite each other along the first direction, the second surfaces (217) of two adjacent battery cells in each row of the battery cell (21) being positioned opposite each other along the second direction, and the second surface (217) of the battery cell (21) closest to the frame (321) being connected to the frame (321).

8. The battery cell (21) includes a plurality of surfaces, the plurality of surfaces including the first surface (216) with the largest area, and adjacent to each row of the battery cell (21) along the first direction. The battery according to claim 5, characterized in that the first surfaces (216) of two contacting battery cells are set facing each other, the first surfaces (216) of two adjacent battery cells in each row of the battery cells (21) are set offset along the second direction, and the first surfaces (216) of the battery cells (21) closest to the frame (321) are connected to the frame (321).

9. The battery according to claim 5, wherein the battery cell (21) includes a plurality of surfaces, the plurality of surfaces including a first surface (216) with the largest area, the first surfaces (216) of two adjacent battery cells in each row of the battery cell (21) are offset from each other along the first direction, the first surfaces (216) of two adjacent battery cells in each row of the battery cell (21) are facing each other along the second direction, and the first surface (216) of the battery cell (21) closest to the frame (321) is connected to the frame (321).

10. The battery according to claim 1, wherein 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 an electrode terminal (214), and in 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.

11. The battery according to claim 10, characterized in that, in the third direction, the main body portion (2131) has a size L1, the heat conductive member (40) has a size L2, the first direction, the second direction and the third direction intersect twice each, and here 0.5 ≤ L2 / L1 ≤ 1.

5.

12. The battery according to claim 11, characterized in that, in the third direction, the overlapping region has a size L3 and 0.5 ≤ L3 / L1 ≤ 1.

13. 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).

14. The battery further includes a current collector (50) that is in fluid communication with the heat conductive member (40), The battery according to claim 1, characterized in that the current collector (50) is installed at one end of the heat conductive member (40) in the first direction, or the current collectors (50) are installed at both ends of the heat conductive member (40) in the first direction.

15. The battery according to claim 14, wherein there are two current collectors (50), the two current collectors (50) are installed at one end of the heat conductive member (40) in the first direction, the two current collectors (50) are arranged along the third direction, and the first direction, the second direction and the third direction intersect in pairs.

16. The battery according to claim 6, characterized in that the battery cell (21) includes an electrode terminal (214) installed on at least one of a plurality of surfaces.

17. The battery according to claim 16, wherein the plurality of surfaces further include a third surface (218), the first surface (216), the second surface (217), and the third surface (218) intersect in pairs, and the electrode terminal (214) is installed on the third surface (218).

18. The battery according to claim 17, wherein there are two third surfaces (218), the two third surfaces (218) are positioned opposite each other and intersect with the first surface (216), the battery cell (21) includes two electrode terminals (214) with opposite polarity, the two electrode terminals (214) with opposite polarity are positioned on one of the third surfaces (218), or the two electrode terminals (214) with opposite polarity are each positioned on two of the third surfaces (218).

19. The battery according to claim 17, wherein the battery cell (21) includes two electrode terminals (214) with opposite polarity, the two electrode terminals (214) with opposite polarity are mounted on the third surface (218), or one of the two electrode terminals (214) with opposite polarity is mounted on the third surface (218), and the casing (211) of the battery cell (21) constitutes the other of the two electrode terminals (214) with opposite polarity.

20. The battery according to claim 16, wherein the battery cell (21) includes a first surface (216) and a fourth surface installed opposite to the first surface (216), the first surface (216) and the fourth surface are installed opposite to each other along a first or second direction, a recess is provided on the edge of the fourth surface, the first surface (216) is used to install the electrode terminal (214), and the electrode terminal (214) is installed protruding from the first surface (216) in the second direction and corresponding to the recess.

21. The battery according to claim 1, wherein each row of the battery cells (21) comprises at least two of the battery cells (21), and at least two of the battery cells (21) are arranged along the first direction.

22. 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 second direction, the maximum size of the battery cell (21) is D, where the range of the L / D value is 1 to 30.

23. The battery according to claim 1, wherein the maximum size of the battery cell (21) along the first direction is L, the maximum size of the battery cell (21) along the third direction is H, the range of the L / H value is 0.5 to 6, and the first direction, the second direction, and the third direction intersect in pairs.

24. The battery according to claim 22, characterized in that N × D = n × D2 along the second direction, where n ∈ [0.7, 1].

25. The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) is flattened in a wound structure, and the outer surface of the electrode assembly (213) has two flattened surfaces, the two flattened surfaces facing each other along a second direction. Alternatively, the battery according to claim 1, wherein the electrode assembly (213) has a stacked structure, and the first electrode plate, separator, and second electrode plate of the electrode assembly (213) are stacked along a second direction.

26. A power-consuming device comprising a battery according to any one of claims 1 to 25, for providing electrical energy to drive the movement of the power-consuming device.

27. The power consuming device according to claim 26, characterized in that the first direction is the direction of travel of the power consuming device when the longitudinal direction of the battery and the travel direction of the power consuming device are different.

Images