Battery and electric device
By setting up inner spacers in the battery box, multiple storage parts with different specifications and parameters are formed, the problem of difficulty in arranging and positioning of battery cells in the box is solved, and the battery assembly efficiency is improved.
Patent Information
- Application Number
- CN202420086022.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-12
AI Technical Summary
During the assembly process of existing batteries, it is difficult to arrange and position battery cells of different shapes and sizes in the box, resulting in low assembly efficiency.
An inner spacer is provided inside the box of the battery, and a plurality of accommodating parts with different specifications are formed in the inner spacer, and the battery cell is installed into the corresponding accommodating parts in a one-to-one or multiple-to-one manner.
Through the design of the inner spacer, the arrangement and positioning of battery cells in the box are simplified, and the grouping efficiency of battery cells of different specifications is improved, thereby improving the assembly efficiency of the battery.
Smart Images
Figure CN222463189U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of battery technology, and in particular relates to a battery and an electrical device. Background Art
[0002] With the development of new energy technology, the application of batteries is becoming more and more extensive. For example, batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields.
[0003] As the application areas of batteries continue to expand, the market demand is also growing, and battery assembly efficiency is receiving more and more attention. Utility Model Content
[0004] The embodiments of the present application provide a battery and an electrical device to improve the assembly efficiency of the battery.
[0005] According to a first aspect of the present application, the present application provides a battery, which includes a box, an inner partition and a plurality of battery cells of at least two specification parameters. The inner partition is arranged inside the box, and the inner partition includes a plurality of accommodating parts of at least two specification parameters. The plurality of battery cells of at least two specification parameters are accommodated in a one-to-one and / or many-to-one manner in the accommodating parts with matching specification parameters.
[0006] The embodiment of the present application provides an inner partition in the box body, and forms a plurality of accommodating portions with at least two different specification parameters in the inner partition. When the battery is assembled, a plurality of battery cells of different specifications can be installed one-to-one and / or many-to-one into the corresponding accommodating portions, without having to consider the arrangement and positioning of the plurality of battery cells in the box body, thereby alleviating the problem of difficulty in assembling battery cells of at least two different specifications, improving the grouping efficiency of the battery cells of at least two different specifications, and thereby improving the assembly efficiency of the battery.
[0007] Optionally, the specification parameters include at least one of a shape, a size along a first direction, a size along a second direction, and a size along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.
[0008] Multiple accommodating portions and multiple battery cells may differ in shape and / or size in any direction, thereby facilitating quick and easy assembly of at least two battery cells of different shapes and sizes into the box, enriching the optional specifications of battery cells in the battery and improving the flexibility of selection of multiple battery cells in the battery.
[0009] Optionally, the box body includes a first plate, a second plate and at least one side plate, the first plate and the second plate are arranged opposite to each other along a first direction, and the at least one side plate is connected to the first plate and the second plate. Two ends of the inner partition arranged opposite to each other along the first direction are adjacent to the first plate and the second plate respectively, and the inner partition is adjacent to the at least one side plate around the circumference of the first direction.
[0010] In the embodiment of the present application, the ends and sides of the inner partition are adjacent to the box body. On the one hand, the box body can exert a certain limiting effect on the battery cells accommodated in the various accommodating parts of the inner partition, further improving the structural stability of the battery. On the other hand, the accommodating space inside the box body can be fully utilized, thereby improving the space utilization rate inside the box body and increasing the energy density of the battery.
[0011] Optionally, each accommodating portion penetrates the inner partition along the first direction. A heat exchange flow channel for the heat exchange medium to flow is formed inside at least one of the first plate and the second plate.
[0012] When a heat exchange medium flows through the heat exchange channel, the heat exchange medium can exchange heat with the battery cells in each receiving part, thereby improving the stability and reliability of the battery cells. Regardless of whether the heat exchange channel is formed on the first plate or the second plate, the heat exchange channel can be thermally connected to each receiving part at the same time, simplifying the structure of the battery thermal management system.
[0013] Optionally, the plurality of accommodating parts include a first accommodating part and a second accommodating part, and the first accommodating part and the second accommodating part have different specification parameters. The plurality of battery cells include a first battery cell and a second battery cell, and the first battery cell is accommodated in the first accommodating part and matches the specification parameters of the first accommodating part, and the second battery cell is accommodated in the second accommodating part and matches the specification parameters of the second accommodating part. Thus, efficient assembly of two battery cells of different specifications is achieved.
[0014] Optionally, the first receiving portion and the second receiving portion are arranged along the second direction, the size of the first receiving portion along the second direction is smaller than the size of the second receiving portion along the second direction, and the second direction intersects the first direction, thereby achieving rapid assembly of two battery cells with different thicknesses along the second direction.
[0015] Optionally, the inner partition is bent and extended to form a plurality of first accommodating parts and a plurality of second accommodating parts, and the openings of any two adjacent ones of the plurality of first accommodating parts and the plurality of second accommodating parts along the third direction are opposite, and the first direction, the second direction and the third direction are perpendicular to each other. In this way, the spread of thermal runaway can be hindered to a certain extent. When a battery cell in one of the accommodating parts has thermal runaway, the impact on the battery cell in the accommodating parts adjacent to it can be reduced, thereby reducing the risk of large-area thermal runaway.
[0016] Optionally, the first receiving portion and the second receiving portion are arranged along the second direction, the dimension of the first receiving portion along the third direction is smaller than the dimension of the second receiving portion along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other, thereby achieving rapid assembly of two battery cells with different lengths along the third direction.
[0017] Optionally, there are multiple first accommodating parts and multiple second accommodating parts. Multiple first accommodating parts form multiple first accommodating part groups, each first accommodating part group includes at least two first accommodating parts arranged in sequence along the third direction, and multiple first accommodating part groups and multiple second accommodating parts are arranged alternately along the second direction. In the embodiment of the present application, the first accommodating parts with smaller sizes along the third direction are arranged in groups, which can fully utilize the space of the inner partition along the third direction, thereby improving the rationality of the spatial layout and the energy density of the battery.
[0018] Optionally, the first receiving portion and the second receiving portion have different sizes along the second direction and different sizes along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other, thereby achieving rapid assembly of two battery cells with different thicknesses along the second direction and lengths along the third direction.
[0019] Optionally, there are multiple first accommodating parts and multiple second accommodating parts. The multiple first accommodating parts form two first accommodating part groups, each of which includes multiple first accommodating parts arranged in sequence along the second direction, and the two first accommodating part groups and the multiple second accommodating parts are arranged along the third direction. Thus, the space utilization rate of the inner partition and the box body can be improved by arranging the first accommodating parts and the second accommodating parts in reasonable positions.
[0020] Optionally, the box body includes a first plate, a second plate and at least one side plate, the first plate and the second plate are arranged opposite to each other along a first direction, at least one side plate is connected to the first plate and the second plate, and the inner partition is connected to the first plate. Thus, the assembly stability between the inner partition and the box body can be improved, thereby improving the structural stability of the battery.
[0021] Optionally, a recess is provided on one side of the first plate facing the second plate, and the inner spacer is inserted into the recess and connected to the first plate. The recess can position the inner spacer during the battery assembly process, thereby achieving connection between the inner spacer and the first plate, and improving the production efficiency of the battery. The first plate can also limit and support the portion of the inner spacer inserted into the recess, thereby improving the connection strength between the inner spacer and the first plate, and improving the structural stability and reliability of the battery.
[0022] Optionally, the projection of the inner partition in a preset reference plane matches the shape of the recess, and the preset reference plane is perpendicular to the first direction. During assembly, it is helpful to quickly determine the assembly position of the inner partition in the box body, thereby improving assembly efficiency and the accuracy of the position of the inner partition.
[0023] Optionally, the battery further includes a colloid, which is at least partially contained in the recess and bonds the inner spacer to the first plate. Thus, the requirements for the materials of the first plate and the inner spacer can be reduced, making the selection of materials for the first plate and the inner spacer more flexible. The colloid can fill the gap between the first plate and the inner spacer, thereby playing a role of sealing and reinforcement. The recess can provide a storage space for the colloid, reduce the occupation of the internal space of the box by the colloid, and improve the space utilization rate inside the box and the energy density of the battery.
[0024] Optionally, the inner partition is an integrally formed structure, which has a simple integral forming process and improves production efficiency.
[0025] According to the second aspect of the present application, the present application also provides an electrical device, which includes a battery provided by any of the above embodiments, and the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.
[0028] Figure 2 It is a schematic diagram of the exploded structure of a battery provided in one embodiment of the present application.
[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of a battery along one direction provided by an embodiment of the present application.
[0030] Figure 4 yes Figure 3 Schematic diagram of the structure of the inner separator of the battery shown.
[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of a battery along one direction provided in another embodiment of the present application.
[0032] Figure 6 yes Figure 5 Schematic diagram of the structure of the inner separator of the battery shown.
[0033] Figure 7 It is a schematic diagram of the cross-sectional structure of a battery along one direction provided in yet another embodiment of the present application.
[0034] Figure 8 yes Figure 7 Schematic diagram of the structure of the inner separator of the battery shown.
[0035] Fig. 9 It is a schematic diagram of the cross-sectional structure of a battery box along one direction provided by an embodiment of the present application.
[0036] In the attached figure:
[0037] Vehicle 1000, battery 100, controller 200, motor 300, housing 10, first plate 11, recess 111, second plate 12, side plate 13, inner partition 20, first accommodating portion 21, second accommodating portion 22, side plate 23, first battery cell 31, second battery cell 32, colloid 40, first direction X, second direction Y, third direction Z. DETAILED DESCRIPTION
[0038] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.
[0040] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.
[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0042] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, m and / or n can represent: m exists alone, m and n exist at the same time, and n exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0043] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).
[0044] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.
[0045] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0046] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the absolutely perpendicular situation, but also the roughly perpendicular situation conventionally recognized in engineering. For example, if the angle between two directions is 85°-90°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.
[0047] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.
[0048] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc., which are not limited in the embodiments of the present application.
[0049] A battery cell generally includes an electrode assembly and a casing. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow active ions to pass through. The casing is used to encapsulate components such as the electrode assembly and the electrolyte. The casing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell) or an aluminum-plastic film, etc.
[0050] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in this application.
[0051] The battery mentioned in the embodiments of the present application refers to a single physical module including multiple battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.
[0052] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.
[0053] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.
[0054] With the widespread application of batteries, the market demand is also constantly expanding, and the assembly efficiency of batteries is becoming more and more important. In the related art, it is difficult to position and arrange two or more battery cells of different shapes and / or sizes during assembly, and the assembly efficiency is low, which seriously affects the production efficiency of batteries.
[0055] Based on the above problems discovered by the inventors, the inventors have improved the structure of the battery. The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.
[0056] The battery provided in the embodiment of the present application includes a box body, an inner partition, and a plurality of battery cells with at least two specification parameters. The inner partition is arranged inside the box body and includes a plurality of receiving parts with at least two specification parameters, and the plurality of battery cells are received in the receiving parts with matching specification parameters in a one-to-one or multiple-to-one manner.
[0057] The embodiment of the present application provides an inner partition in the box body, and forms a plurality of accommodating portions with at least two different specification parameters in the inner partition. When the battery is assembled, a plurality of battery cells of different specifications can be installed one-to-one or many-to-one into the corresponding accommodating portions, without having to consider the arrangement and positioning of the plurality of battery cells in the box body, thereby alleviating the problem of difficulty in assembling battery cells of at least two different specifications, improving the grouping efficiency of the battery cells of at least two different specifications, and thereby improving the assembly efficiency of the battery.
[0058] The battery provided in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. The power supply system of the electrical device can be composed of the battery disclosed in the present application, which is conducive to improving assembly efficiency.
[0059] The present application also provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.
[0060] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.
[0061] Figure 1 A schematic diagram of the structure of a vehicle 1000 provided in some embodiments of the present application. Figure 1 The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.
[0062] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
[0063] The present application also provides a battery 100, Figure 2 Schematic diagram of the exploded structure of a battery provided by an embodiment of the present application. Figure 2 The battery 100 provided in the embodiment of the present application includes a housing 10, an inner partition 20, and a plurality of battery cells of at least two specifications. The inner partition 20 is arranged inside the housing 10, and the inner partition 20 includes a plurality of receiving parts of at least two specifications. The plurality of battery cells of at least two specifications are received in receiving parts with matching specifications in a one-to-one and / or many-to-one manner.
[0064] A battery cell may be the smallest unit constituting the battery 100 .
[0065] In the battery 100, multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are both connected in series and in parallel. Multiple battery cells can be placed in a one-to-one or many-to-one manner in a receiving portion with matching specifications and parameters, and then the multiple battery cells are placed in series, in parallel, or in a mixed connection. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the multiple battery cells are placed in a one-to-one or many-to-one manner in a receiving portion with matching specifications and parameters. Multiple battery cells can be electrically connected through a busbar component to achieve series connection, parallel connection, or mixed connection between multiple battery cells.
[0066] Optionally, there may be one or more battery cells with the same specification parameters. If there are multiple battery cells with the same specification parameters, the multiple battery cells with the same specification parameters may be connected in series or in parallel first. Then, the battery cells with different specification parameters may be connected in series, in parallel, or in mixed connection.
[0067] Multiple battery cells can be firstly accommodated in the receiving portion of the inner partition 20 one-to-one or multiple-to-one, and then the inner partition 20 containing multiple battery cells is placed in the box 10 as a whole. Of course, the inner partition 20 can also be placed in the box 10 first, and then multiple battery cells can be accommodated in the receiving portion of the inner partition 20 one-to-one or multiple-to-one.
[0068] Each receiving portion of the inner spacer 20 may be provided with a fixing structure for limiting the position of the battery cells accommodated therein, so as to improve the installation stability between the battery cells and the inner spacer 20. The fixing structure may be, for example, an elastic buckle or the like.
[0069] Multiple battery cells can be accommodated one-to-one in accommodating parts with matching specifications, and each accommodating part accommodates a battery cell, and the battery cell matches the specifications of the accommodating part. Exemplarily, the shape, size and other specifications of the battery cell are respectively the same as the shape, size and other specifications of the accommodating part.
[0070] Multiple battery cells can also be placed in a container with matching specifications in a one-to-one manner. Each container contains multiple battery cells, and the specifications of the whole formed by the combination of the multiple battery cells match the specifications of the container. Exemplarily, the shape, size and other specifications of the whole formed by the combination of the multiple battery cells are the same as the shape, size and other specifications of the container. Multiple battery cells placed in the same container can be loaded into the container sequentially, or they can be loaded into the container after forming a battery module.
[0071] Battery cells with a part of the specification parameters among the multiple battery cells can be accommodated one-to-one in a receiving portion with matching specification parameters, and the specification parameters of the battery cells with the part of the specification parameters match the specification parameters of the receiving portion. Battery cells with another part of the specification parameters among the multiple battery cells can be accommodated many-to-one in a receiving portion with matching specification parameters, and the specification parameters of the whole formed by the multiple battery cells accommodated in the same receiving portion match the specification parameters of the receiving portion.
[0072] The box 10 can be in various structural forms. Optionally, the box 10 may include a first box portion and a second box portion, which cover each other to define a storage space for accommodating the inner partition 20 and multiple battery cells. The first box portion may be a cylindrical structure with one end open, and the second box portion may be a plate-like structure, and the second box portion covers the open side of the first box portion, thereby forming a box 10 with a storage space. The first box portion and the second box portion may also both be cylindrical structures with one side open, and the open side of the second box portion covers the open side of the second box portion, thereby forming a box 10 with a storage space.
[0073] The box body 10 may have various shapes. For example, the box body 10 may be a cylinder, a cuboid, a prism, etc.
[0074] It can be understood that when the second box body portion covers the first box body portion, the first box body portion can also be called a lower box body, and the second box body portion can also be called an upper box cover.
[0075] In order to improve the sealing performance after the first box body and the second box body are connected, a sealing member may be further provided between the first box body and the second box body. The sealing member may be, for example, a sealant, a sealing ring, etc.
[0076] The embodiment of the present application arranges an inner partition 20 in the box body 10, and forms a plurality of accommodating portions with at least two different specification parameters in the inner partition 20. When the battery 100 is assembled, a plurality of battery cells of different specifications can be installed one-to-one and / or many-to-one into the corresponding accommodating portions, without having to consider the arrangement and positioning of the plurality of battery cells in the box body 10. This alleviates the problem of difficulty in assembling battery cells of at least two different specifications, improves the grouping efficiency of the battery cells of at least two different specifications, and thereby improves the assembly efficiency of the battery 100.
[0077] In some embodiments, the specification parameters include at least one of a shape, a size along a first direction X, a size along a second direction Y, and a size along a third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.
[0078] The receiving parts of different specifications and parameters may have different shapes. Accordingly, the battery cells of different specifications and parameters may have different shapes, and the shapes of the battery cells match the shapes of the corresponding receiving parts. For example, the receiving part of one specification and parameter may be a rectangular parallelepiped, and the battery cells accommodated in the receiving part may be square batteries; the receiving part of another specification and parameter may be cylindrical or semi-cylindrical, and the battery cells accommodated in the receiving part may be cylindrical batteries.
[0079] The receiving parts of different specification parameters may also have different sizes. Accordingly, battery cells of different specification parameters may have different sizes, and the size of the battery cells matches the size of the corresponding receiving parts. Exemplarily, the receiving part may be a rectangular parallelepiped, and the size of the receiving part of one specification parameter in at least one direction of the first direction X, the second direction Y and the third direction Z is different from the size of the receiving part of another specification parameter in the same direction. For example, the widths of the receiving parts of the two specification parameters along the first direction X are different, or the thicknesses of the receiving parts of the two specification parameters along the second direction Y are different, or the lengths of the receiving parts of the two specification parameters along the third direction Z are different, or the thickness, width and length of the two receiving parts are all different, and so on.
[0080] When multiple battery cells are accommodated in the accommodating portion one by one, the length, width and thickness of the matching battery cells and the accommodating portion are substantially the same. For example, the length, width and thickness of the battery cell may be exactly equal to the length, width and thickness of the accommodating portion that matches the battery cell, or may be slightly smaller than the length, width and thickness of the accommodating portion that matches the battery cell, so that the battery cell can be more smoothly loaded into the matching accommodating portion.
[0081] When multiple battery cells are accommodated in the accommodating portion in a multiple-to-one manner along the thickness direction, the sum of the thicknesses of the multiple battery cells accommodated in the same accommodating portion is substantially the same as the thickness of the accommodating portion, and the length and width of each battery cell are substantially the same as the length and width of the accommodating portion, respectively. Exemplarily, the sum of the thicknesses of the multiple battery cells accommodated in the same accommodating portion may be exactly equal to the thickness of the accommodating portion, or may be slightly smaller than the thickness of the accommodating portion, and the length and width of each battery cell may be exactly equal to the length and width of the accommodating portion, respectively, or may be smaller than the length and width of the accommodating portion, respectively.
[0082] The multiple accommodating portions and multiple battery cells provided in the embodiment of the present application may differ in shape and / or size in any direction, thereby facilitating the quick and easy assembly of at least two battery cells of different shapes and sizes into the box body 10, thereby enriching the optional specifications of the battery cells in the battery 100 and improving the flexibility of selection of the multiple battery cells in the battery 100.
[0083] Figure 3is a schematic diagram of a cross-sectional structure of a battery provided by an embodiment of the present application along one direction, Figure 4 yes Figure 3 The schematic diagram of the structure of the inner separator of the battery shown. Figures 2 to 4 In some embodiments, the box body 10 includes a first plate 11, a second plate 12 and at least one side plate 13, the first plate 11 and the second plate 12 are arranged opposite to each other along the first direction X, and the at least one side plate 13 is connected to the first plate 11 and the second plate 12. The two ends of the inner partition 20 arranged opposite to each other along the first direction X are adjacent to the first plate 11 and the second plate 12 respectively, and the inner partition 20 is adjacent to the at least one side plate 13 around the circumference of the first direction X.
[0084] The side panel 13 may be one or more. Exemplarily, the side panel 13 may be one, and the side panel 23 may be a cylindrical structure, and the side panel 13, the first panel 11, and the second panel 12 are connected to form a cylindrical box 10. Exemplarily, the side panel 13 may be multiple, and the multiple side panels 13 are sequentially connected to form a frame, and the frame, the first panel 11, and the second panel 12 are connected to form a prismatic box 10. Optionally, there may be four side panels 13, and the box 10 may be a rectangular parallelepiped.
[0085] The first plate 11 and at least one side plate 13 are connected to form a first box body with an opening, and the second plate 12 forms a second box body. The side plate 13 and the first plate 11 can be formed independently, and at least one side plate 13 can be connected to the edge of the first plate 11. The connection method between the side plate 13 and the first plate 11 includes but is not limited to welding, bonding, clamping, etc. At least one side plate 13 can also be integrally formed with the first plate 11.
[0086] After the inner partition 20 and the plurality of battery cells are installed in the first box body, the second plate 12 is connected to at least one side plate 13, so that the inner partition 20 and the plurality of battery cells are encapsulated in the box body 10. The connection between the second plate 12 and the side plate 13 includes, but is not limited to, welding, bonding, clamping, etc.
[0087] The first plate 11 and the second plate 12 are arranged opposite to each other, and the inner spacer 20 and the plurality of battery cells may be arranged between the first plate 11 and the second plate 12. The inner spacer 20 and the plurality of battery cells may be fixed to the first plate 11, may be fixed to the second plate 12, or may be fixed to the first plate 11 and the second plate 12 at the same time.
[0088] The inner spacer 20 and the plurality of battery cells may be connected to the first plate 11, and the first plate 11 may serve as a support plate for bearing the gravity of the inner spacer 20 and the plurality of battery cells. After the inner spacer 20 and the plurality of battery cells are installed in the electric device, the battery cells may be located on the upper side of the first plate 11 or on the lower side of the first plate 11.
[0089] The materials of the first plate 11 , the second plate 12 and the side plate 13 may be the same or different.
[0090] The two ends of the inner partition 20 that are oppositely disposed along the first direction X are respectively adjacent to the first plate 11 and the second plate 12, which means that the two ends of the inner partition 20 that are oppositely disposed along the first direction X are respectively adjacent to the first plate 11 and the second plate 12. The two ends of the inner partition 20 that are oppositely disposed along the first direction X may respectively abut against the first plate 11 and the second plate 12, or may respectively form a certain gap with the first plate 11 and the second plate 12.
[0091] The inner partition 20 surrounding the circumference of the first direction X and being adjacent to at least one side plate 13 means that the inner partition 20 surrounding the circumference of the first direction X and being adjacent to at least one side plate 13 are disposed. The inner partition 20 surrounding the circumference of the first direction X may abut against the side plate 13, or may form a certain gap with the side plate 13.
[0092] Optionally, the outer contours of the inner partition 20 and the box body 10 are both rectangular, and the six ends of the inner partition 20 along the first direction X, the second direction Y and the third direction Z can respectively abut against the six inner walls of the box body 10 along the first direction X, the second direction Y and the third direction Z. The inner partition 20 will not shift or shake in the box body 10, thereby improving the structural stability of the battery 100.
[0093] In the embodiment of the present application, the ends and sides of the inner partition 20 are adjacent to the box body 10. On the one hand, the box body 10 can exert a certain limiting effect on the battery cells accommodated in the various accommodating parts of the inner partition 20, further improving the structural stability of the battery 100. On the other hand, the accommodating space inside the box body 10 can be fully utilized, thereby improving the space utilization rate inside the box body 10 and improving the energy density of the battery 100.
[0094] In some embodiments, each accommodating portion penetrates the inner partition 20 along the first direction X. A heat exchange flow channel for the heat exchange medium to flow is formed inside at least one of the first plate 11 and the second plate 12 .
[0095] The accommodating portion penetrates the inner partition 20 along the first direction X and has at least two openings arranged opposite to each other along the first direction X. The first plate 11 and the second plate 12 can cover the two openings of the accommodating portion respectively, so that each accommodating portion forms a closed or relatively closed space.
[0096] The heat exchange channel may be provided only in the first plate 11 , or only in the second plate 12 , or in both the first plate 11 and the second plate 12 .
[0097] A cooling heat exchange medium may flow through the heat exchange flow channel to absorb the heat generated or dissipated by the battery cells in each receiving portion, thereby cooling the multiple battery cells. A heating heat exchange medium may also flow through the heat exchange flow channel to provide heat to the battery cells in each receiving portion, thereby increasing the temperature of the multiple battery cells.
[0098] The heat exchange channel in the first plate 11 and / or the second plate 12 may be a channel extending in a bent manner, or may include a plurality of channels extending in a straight manner, so as to improve the heat exchange effect between the heat exchange medium and the battery cells.
[0099] In the embodiment of the present application, a heat exchange channel is formed in at least one of the first plate 11 and the second plate 12. When a heat exchange medium is passed through the heat exchange channel, the heat exchange medium can exchange heat with the battery cells in each receiving part, thereby improving the stability and reliability of the battery cells. Regardless of whether the heat exchange channel is formed in the first plate 11 or the second plate 12, the heat exchange channel can be thermally connected to each receiving part at the same time, simplifying the structure of the thermal management system of the battery 100.
[0100] In some embodiments, the plurality of receiving parts include a first receiving part 21 and a second receiving part 22, and the first receiving part 21 and the second receiving part 22 have different specifications. The plurality of battery cells include a first battery cell 31 and a second battery cell 32, and the first battery cell 31 is received in the first receiving part 21 and matches the specifications of the first receiving part 21, and the second battery cell 32 is received in the second receiving part 22 and matches the specifications of the second receiving part 22.
[0101] The number of the first accommodation portion 21 and the second accommodation portion 22 may be one or more.
[0102] The first receiving portion 21 and the second receiving portion 22 may have different shapes, and may also have different sizes in any one direction of the first direction X, the second direction Y, and the third direction Z, or in any two or more directions.
[0103] Optionally, the first battery cells 31 are accommodated in the first accommodating portion 21 in a one-to-one manner, and the second battery cells 32 are accommodated in the second accommodating portion 22 in a one-to-one manner. Of course, the first battery cells 31 can also be accommodated in the first accommodating portion 21 in a many-to-one manner, and the second battery cells 32 can also be accommodated in the second accommodating portion 22 in a many-to-one manner.
[0104] The embodiment of the present application provides a first accommodating portion 21 and a second accommodating portion 22 with different specifications and parameters, respectively used to accommodate a first battery cell 31 and a second battery cell 32 with different specifications and parameters, thereby achieving efficient assembly of two battery cells with different specifications.
[0105] In some embodiments, reference Figure 3and Figure 4 The first accommodation portion 21 and the second accommodation portion 22 are arranged along the second direction Y, the size of the first accommodation portion 21 along the second direction Y is smaller than the size of the second accommodation portion 22 along the second direction Y, and the second direction Y intersects with the first direction X.
[0106] There may be multiple first accommodating parts 21 and multiple second accommodating parts 22. There are multiple ways to arrange the first accommodating parts 21 and the second accommodating parts 22 along the second direction Y. Optionally, multiple first accommodating parts 21 and multiple second accommodating parts 22 may be arranged alternately one by one along the second direction Y, or may be arranged alternately in groups along the second direction Y. Exemplarily, two or more first accommodating parts 21 are arranged successively along the second direction Y to form a group, two or more second accommodating parts 22 are arranged successively along the second direction Y to form a group, and a group of first accommodating parts 21 and a group of second accommodating parts 22 are arranged alternately along the second direction Y.
[0107] The sizes of the first accommodation portion 21 and the second accommodation portion 22 along the first direction X may be the same or different; the sizes of the first accommodation portion 21 and the second accommodation portion 22 along the third direction Z may be the same or different.
[0108] The dimension of the first receiving portion 21 along the second direction Y is smaller than the dimension of the second receiving portion 22 along the second direction Y. The first receiving portion 21 can be used to receive a first battery cell 31 with a thinner thickness along the second direction Y, and the second receiving portion 22 can be used to receive a second battery cell 32 with a thicker thickness along the second direction Y. Thus, rapid assembly of two battery cells with different thicknesses is achieved.
[0109] In some embodiments, the inner partition 20 is bent and extended to form a plurality of first accommodating portions 21 and a plurality of second accommodating portions 22, and the openings of any two adjacent ones of the plurality of first accommodating portions 21 and the plurality of second accommodating portions 22 along the third direction Z are in opposite directions, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.
[0110] Exemplarily, when the third direction Z is the front-to-back direction, any two adjacent ones of the plurality of first accommodation portions 21 and the plurality of second accommodation portions 22 have openings along the third direction Z facing forward and backward, respectively.
[0111] The inner partition 20 can be integrally formed, and the forming process is simple.
[0112] The openings of any two adjacent ones of the multiple first accommodating portions 21 and the multiple second accommodating portions 22 along the third direction Z are in opposite directions, which can hinder the spread of thermal runaway to a certain extent. When thermal runaway occurs in a battery cell in one of the accommodating portions, the impact on the battery cell in the adjacent accommodating portions can be reduced, thereby reducing the risk of large-area thermal runaway.
[0113] Figure 5is a schematic diagram of a cross-sectional structure of a battery along one direction provided by another embodiment of the present application, Figure 6 yes Figure 5 The schematic diagram of the structure of the inner separator of the battery shown. Figures 5 and 6 In other embodiments, the first accommodating portion 21 and the second accommodating portion 22 are arranged along the second direction Y, the size of the first accommodating portion 21 along the third direction Z is smaller than the size of the second accommodating portion 22 along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.
[0114] There may be multiple first accommodating portions 21 and multiple second accommodating portions 22. There are multiple ways to arrange the first accommodating portions 21 and the second accommodating portions 22 along the second direction Y. Optionally, multiple first accommodating portions 21 and multiple second accommodating portions 22 may be arranged alternately along the second direction Y one by one, or may be arranged alternately along the second direction Y in groups.
[0115] The sizes of the first accommodation portion 21 and the second accommodation portion 22 along the first direction X may be the same or different; the sizes of the first accommodation portion 21 and the second accommodation portion 22 along the second direction Y may be the same or different.
[0116] The dimension of the first accommodating portion 21 along the third direction Z is smaller than that of the second accommodating portion 22 along the third direction Z. The first accommodating portion 21 can be used to accommodate the first battery cell 31 with a shorter length along the third direction Z, and the second accommodating portion 22 can be used to accommodate the second battery cell 32 with a longer length along the third direction Z. Thus, rapid assembly of two battery cells of different lengths is achieved.
[0117] In some embodiments, there are multiple first accommodating portions 21 and multiple second accommodating portions 22. Multiple first accommodating portions 21 form multiple first accommodating portion groups, each first accommodating portion group includes at least two first accommodating portions 21 arranged in sequence along the third direction Z, and multiple first accommodating portion groups and multiple second accommodating portions 22 are alternately arranged along the second direction Y.
[0118] The sum of the lengths of the plurality of first accommodation portions 21 in each first accommodation portion group along the third direction Z is substantially the same as the length of the second accommodation portion 22 along the third direction Z.
[0119] Optionally, each first accommodating portion group may include two first accommodating portions 21 , and the two first accommodating portions 21 respectively have openings disposed opposite to each other along the third direction Z, so as to facilitate the installation of the first battery cells 31 in the two first accommodating portions 21 .
[0120] The embodiment of the present application arranges the first accommodating portions 21 with smaller dimensions along the third direction Z in groups, which can fully utilize the space of the inner partition 20 along the third direction Z, thereby improving the rationality of the spatial layout and the energy density of the battery 100.
[0121] Figure 7 is a schematic diagram of a cross-sectional structure of a battery along one direction provided by another embodiment of the present application, Figure 8 yes Figure 7 The schematic diagram of the structure of the inner separator of the battery shown. Figures 7 and 8 In some other embodiments, the dimensions of the first accommodating portion 21 and the second accommodating portion 22 along the second direction Y and the dimensions along the third direction Z are different, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.
[0122] There can be multiple first accommodating parts 21 and multiple second accommodating parts 22. The arrangement of multiple first accommodating parts 21 and multiple second accommodating parts 22 can be flexibly set according to the sizes of the first accommodating parts 21 and the second accommodating parts 22. Multiple first accommodating parts 21 and multiple second accommodating parts 22 can be arranged in the same direction or in two or more directions.
[0123] The sizes of the first receiving portion 21 and the second receiving portion 22 along the first direction X may be the same or different.
[0124] The dimensions of the first accommodating portion 21 and the second accommodating portion 22 along the second direction Y and the dimensions along the third direction Z are different. The first accommodating portion 21 and the second accommodating portion 22 can be used to accommodate two battery cells with different thicknesses and lengths, respectively, thereby realizing the rapid assembly of the two battery cells with different thicknesses and lengths.
[0125] In some embodiments, there are multiple first accommodating portions 21 and multiple second accommodating portions 22. Multiple first accommodating portions 21 form two first accommodating portion groups, each of which includes multiple first accommodating portions 21 arranged in sequence along the second direction Y, and the two first accommodating portion groups and multiple second accommodating portions 22 are arranged along the third direction Z. Thus, the space utilization of the inner partition 20 and the box body 10 is improved by the reasonable position arrangement of the first accommodating portions 21 and the second accommodating portions 22.
[0126] The openings of the plurality of first accommodating portions 21 in the same first accommodating portion group along the third direction Z are in the same direction and are all away from the second accommodating portion 22 , so as to reduce structural interference during assembly of the first battery cell 31 and the second battery cell 32 .
[0127] The two first receiving parts groups can be located at both sides of the second receiving parts 22 along the third direction Z, so as to facilitate the assembly of the first battery cell 31. The second receiving parts 22 have openings along the second direction Y, and the opening directions of two adjacent second receiving parts 22 along the second direction Y are opposite.
[0128] In some embodiments, the box body 10 may include a first plate 11, a second plate 12 and at least one side plate 13, the first plate 11 and the second plate 12 are arranged opposite to each other along a first direction X, and the at least one side plate 13 is connected to the first plate 11 and the second plate 12. The inner partition 20 is connected to the first plate 11.
[0129] The inner spacer 20 may be connected to the first plate 11 after a plurality of battery cells are accommodated in the accommodation portion thereof, or may be connected to the first plate 11 and then a plurality of battery cells may be installed in the accommodation portion thereof.
[0130] The connection methods between the inner partition 20 and the first plate 11 include but are not limited to welding, bonding, clamping, plugging, etc.
[0131] A plurality of battery cells may also be connected to the first plate 11 , and the first plate 11 may serve as a support plate for bearing the gravity of the inner spacer 20 and the plurality of battery cells.
[0132] In the embodiment of the present application, the inner partition 20 is connected to the first plate 11 , which can improve the assembly stability between the inner partition 20 and the box body 10 , thereby improving the structural stability of the battery 100 .
[0133] Fig. 9 is a schematic diagram of a cross-sectional structure of a battery box along one direction provided by an embodiment of the present application. Fig. 9 A recess 111 is formed on one side of the first plate 11 facing the second plate 12 , and the inner partition 20 is inserted into the recess 111 and connected to the first plate 11 .
[0134] The recess 111 may be a groove with a notch facing away from the first plate 11. The recess 111 may be recessed outward from the inner wall of the first plate 11.
[0135] The projection of the inner spacer 20 in the preset reference plane may fall into the projection of the recess 111 in the preset reference plane, so that at least a partial area of the inner spacer 20 is limited by the recess 111 .
[0136] It can be understood that inserting the inner partition 20 into the recess 111 means that at least a portion of the inner partition 20 is inserted into the recess 111 .
[0137] The embodiment of the present application provides the recess 111, so that the inner spacer 20 can be positioned during the assembly of the battery 100, thereby achieving the connection between the inner spacer 20 and the first plate 11, and improving the production efficiency of the battery 100. The first plate 11 can also limit and support the portion of the inner spacer 20 inserted into the recess 111, thereby improving the connection strength between the inner spacer 20 and the first plate 11, and improving the structural stability and reliability of the battery 100.
[0138] In some embodiments, a projection of the inner spacer 20 in a preset reference plane matches the shape of the recess 111 , where the preset reference plane is perpendicular to the first direction X.
[0139] Exemplarily, the projection of the inner partition 20 in the preset reference plane may be a bent curve. Accordingly, the recess 111 also has substantially the same bent shape.
[0140] The recess 111 can position and limit the entire end of the inner partition 20 along the first direction X, which is helpful to quickly determine the assembly position of the inner partition 20 in the box body 10 during assembly, thereby improving the assembly efficiency and the accuracy of the position of the inner partition 20.
[0141] In some embodiments, the battery 100 further includes a gel 40 , which is at least partially contained in the recess 111 and bonds the inner spacer 20 to the first plate 11 .
[0142] The colloid 40 may be entirely accommodated in the recess 111 , or may be accommodated only partially in the recess 111 .
[0143] The embodiment of the present application uses the colloid 40 to bond the inner partition 20 and the first plate 11, which can reduce the requirements for the materials of the first plate 11 and the inner partition 20, making the selection of materials for the first plate 11 and the inner partition 20 more flexible. The colloid 40 can fill the gap between the first plate 11 and the inner partition 20, thereby playing a role in sealing and reinforcement. The recess 111 can provide a storage space for the colloid 40, reduce the occupation of the internal space of the box 10 by the colloid 40, and improve the space utilization rate inside the box 10 and the energy density of the battery 100.
[0144] When assembling the battery 100, the inner spacer 20 may be inserted into the recess 111 first, and then glue may be injected into the recess 111. After the glue is cured, the colloid 40 is formed, thereby bonding the first plate 11 and the inner spacer 20. When assembling the battery 100, the glue may be injected into the recess 111 first, and then the inner spacer 20 may be inserted into the recess 111.
[0145] In some embodiments, the inner partition 20 is an integrally formed structure. Optionally, the inner partition 20 can be integrally extruded. The integrally formed inner partition 20 has a simple process and improves production efficiency.
[0146] In some embodiments, the material of the box body 10 and the inner partition 20 can both be metal, and the thickness of the inner partition 20 is less than the thickness of each plate of the box body 10. The metal material has high strength, which can improve the structural strength of the box body 10, thereby improving the reliability of the battery 100. The inner partition 20 has a small thickness, which can reduce the overall weight of the battery 100 while meeting the structural strength requirements, and improve the energy density of the battery 100.
[0147] The embodiment of the present application provides a battery 100, which includes a case 10, an inner partition 20, and a plurality of battery cells of different shapes and / or sizes. The inner partition 20 is arranged inside the case 10, and includes a plurality of accommodating parts of different shapes and / or sizes, and a plurality of battery cells are accommodated one by one in accommodating parts with matching specification parameters. The embodiment of the present application arranges the inner partition 20 in the case 10, and forms a plurality of accommodating parts of different shapes and / or sizes in the inner partition 20. When the battery 100 is assembled, a plurality of battery cells of different shapes and / or sizes can be installed in the accommodating parts of the same shape and / or size accordingly, and there is no need to consider the arrangement and positioning of the plurality of battery cells in the case, etc., which alleviates the difficulty of assembling at least two battery cells of different shapes and / or sizes, improves the grouping efficiency of at least two battery cells of different shapes and / or sizes, and thus improves the assembly efficiency of the battery 100.
[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
Claims
1. A battery, characterized in that: include: Box; An inner partition, arranged inside the box, the inner partition comprising a plurality of accommodating parts of at least two specification parameters; as well as A plurality of battery cells of at least two specification parameters are accommodated in the accommodation parts with matching specification parameters in a one-to-one and / or many-to-one manner.
2. The battery according to claim 1, characterized in that The specification parameters include at least one of a shape, a size along a first direction, a size along a second direction, and a size along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.
3. The battery according to claim 1, characterized in that The box body comprises a first plate, a second plate and at least one side plate, the first plate and the second plate are arranged opposite to each other along a first direction, and the at least one side plate is connected to the first plate and the second plate; Two opposite ends of the inner partition along the first direction are adjacent to the first plate and the second plate respectively, and the circumferential side of the inner partition surrounding the first direction is adjacent to the at least one side plate.
4. The battery according to claim 3, characterized in that Each of the accommodating portions penetrates the inner partition along the first direction; A heat exchange channel for heat exchange medium to flow is formed inside at least one of the first plate and the second plate.
5. The battery according to claim 3, characterized in that The plurality of accommodation parts include a first accommodation part and a second accommodation part, wherein the first accommodation part and the second accommodation part have different specification parameters; The plurality of battery cells include a first battery cell and a second battery cell. The first battery cell is accommodated in the first accommodation portion and matches the specification parameters of the first accommodation portion. The second battery cell is accommodated in the second accommodation portion and matches the specification parameters of the second accommodation portion.
6. The battery according to claim 5, characterized in that The first accommodation portion and the second accommodation portion are arranged along a second direction, a size of the first accommodation portion along the second direction is smaller than a size of the second accommodation portion along the second direction, and the second direction intersects the first direction.
7. The battery according to claim 6, characterized in that The inner partition is bent and extended to form a plurality of the first accommodating portions and a plurality of the second accommodating portions, and any two adjacent ones of the plurality of the first accommodating portions and the plurality of the second accommodating portions have openings in opposite directions along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.
8. The battery according to claim 5, characterized in that The first accommodating portion and the second accommodating portion are arranged along the second direction, a size of the first accommodating portion along the third direction is smaller than a size of the second accommodating portion along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.
9. The battery according to claim 8, characterized in that There are multiple first accommodating parts and multiple second accommodating parts; The plurality of first accommodating portions form a plurality of first accommodating portion groups, each of the first accommodating portion groups includes at least two first accommodating portions sequentially arranged along the third direction, and the plurality of first accommodating portion groups and the plurality of second accommodating portions are alternately arranged along the second direction.
10. The battery according to claim 5, characterized in that The sizes of the first accommodating portion and the second accommodating portion along the second direction and along the third direction are different, and the first direction, the second direction and the third direction are perpendicular to each other.
11. The battery according to claim 10, characterized in that There are multiple first accommodating parts and multiple second accommodating parts; The plurality of first accommodating portions form two first accommodating portion groups, each of the first accommodating portion groups includes a plurality of first accommodating portions arranged in sequence along the second direction, and the two first accommodating portion groups and the plurality of second accommodating portions are arranged along the third direction.
12. The battery according to claim 1, characterized in that The box body comprises a first plate, a second plate and at least one side plate, the first plate and the second plate are arranged opposite to each other along a first direction, and the at least one side plate is connected to the first plate and the second plate; The inner spacer is connected to the first plate.
13. The battery according to claim 12, characterized in that A concave portion is provided on one side of the first plate facing the second plate, and the inner partition is inserted into the concave portion and connected to the first plate.
14. The battery according to claim 13, characterized in that The projection of the inner spacer in a preset reference plane matches the shape of the recess, and the preset reference plane is perpendicular to the first direction.
15. The battery according to claim 13, characterized in that The battery also includes: A colloid is at least partially contained in the recess and bonds the inner spacer to the first plate.
16. The battery according to claim 1, characterized in that The inner partition is an integrally formed structure.
17. An electrical device, characterized in that: The invention comprises a battery according to any one of claims 1 to 16, wherein the battery is used to provide electrical energy.