Battery and electric device

Abstract

The utility model relates to the field of batteries, and provides a battery and an electric device. The battery comprises a battery cell, a substrate and a support table. And at least two battery monomers are arranged. The battery monomers have opposite first and second sides along the first direction, and the first side of each battery monomer is provided with an electrode terminal. In the first direction, the battery monomer with the largest size is a first battery cell, and the battery monomer with the size smaller than that of the first battery cell is a second battery cell. The substrate supports a second side of each battery cell. The supporting tables are arranged corresponding to the second battery cells, and the supporting tables are supported between the corresponding second battery cells and the substrate. Based on the structure, the distance between the electrode terminal of the corresponding second battery cell and the electrode terminal of the first battery cell can be reduced in the first direction through the supporting table, so that the electrode terminals of the battery monomers can conveniently construct an electric connection relation through the confluence component, and the assembly quality, the assembly efficiency and the yield of the battery can be optimized.

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] In some cases, the battery includes at least two battery cells, and the heights of the battery cells may be different, resulting in the electrode terminals of the battery cells being arranged at different heights, which makes it inconvenient for the electrode terminals to establish an electrical connection relationship through the busbar component. Utility Model Content

[0003] The embodiments of the present application provide a battery and an electrical device, aiming to solve the problem that the heights of the battery cells may differ, resulting in the electrode terminals of the battery cells being arranged at different heights, making it inconvenient for the electrode terminals to establish an electrical connection relationship through a busbar component.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is:

[0005] In a first aspect, a battery is provided, the battery comprising:

[0006] At least two battery cells are provided, the battery cells have a first side and a second side opposite to each other along a first direction, and the first side of each battery cell is provided with an electrode terminal; along the first direction, the battery cell with the largest size is a first battery cell, and the battery cell with a size smaller than that of the first battery cell is a second battery cell;

[0007] a substrate supporting the second side of each battery cell;

[0008] The support platform is arranged corresponding to the second battery core, and the support platform is supported between the corresponding second battery core and the substrate.

[0009] In the battery provided by the embodiment of the present application, when there is a difference in the size of each battery cell along the first direction, the battery cell with the largest size along the first direction is used as the first battery cell, and the battery cell with a size smaller than the size of the first battery cell along the first direction is used as the second battery cell. In this case, the present embodiment can use the substrate as a common support reference for each battery cell, so that the substrate is supported on the second side of each battery cell; and the first battery cell is used as an alignment reference, by adding a support table between the second side of each second battery cell and the substrate, so as to support the corresponding second battery cell and the substrate through the support table, and partially or completely make up for the size difference along the first direction between the corresponding second battery cell and the first battery cell, so as to achieve the reduction of the spacing between the electrode terminal of the corresponding second battery cell and the electrode terminal of the first battery cell along the first direction. In this way, it is convenient for the electrode terminals of each battery cell to establish an electrical connection relationship through the confluence component, that is, it is convenient for the electrode terminals of each battery cell to be connected (for example, welded) with the confluence component, so as to optimize the assembly quality, assembly efficiency and yield rate of the battery.

[0010] In some embodiments, along the first direction, a difference between a total size of the support platform and the corresponding second battery cell and a size of the first battery cell is configured to be smaller than a size difference between the first battery cell and the corresponding second battery cell.

[0011] By adopting the above solution, the support platform can clearly reduce the size difference between the second battery cell and the first battery cell along the first direction, and can clearly reduce the distance between the electrode terminal of the second battery cell and the electrode terminal of the first battery cell along the first direction. Therefore, it is convenient for the electrode terminals of each battery cell to establish an electrical connection relationship through the busbar component, and the assembly quality, assembly efficiency and yield rate of the battery can be optimized.

[0012] In some embodiments, the electrode terminals of each battery cell are coplanar.

[0013] By adopting the above scheme, the size of the support platform can be set in a targeted and adaptive manner according to the difference between the size of the first battery cell and the size of the corresponding second battery cell, so that the support platform can completely make up for the size difference between the corresponding second battery cell and the first battery cell, so that the electrode terminal of the corresponding second battery cell can be coplanar with the electrode terminal of the first battery cell. In this way, the electrode terminals of each battery cell can be made coplanar, so that the electrode terminals of each battery cell can be easily connected to each other through the busbar component, and the assembly quality, assembly efficiency and yield rate of the battery can be optimized.

[0014] In some embodiments, a flow channel is provided in the support platform, and the flow channel is used for allowing the heat exchange fluid to flow therein.

[0015] By adopting the above scheme, by setting the flow channel in the support platform, on the one hand, the existing space of the support platform can be used to set the flow channel, thereby improving the space utilization rate of the battery and optimizing the energy density of the battery. On the other hand, on the basis of the support platform supporting the corresponding second battery cell, the support platform can also flow the heat exchange fluid through the flow channel to exchange heat with the corresponding second battery cell, and even in the case where the first battery cell is abutted against the side of the support platform, it can also exchange heat with the corresponding first battery cell, thereby optimizing the heat exchange effect and heat exchange efficiency of the battery to the battery cell, making it easy to reliably adjust the temperature of the battery cell and enabling the battery cell to work normally.

[0016] In some embodiments, the support platform is integrally formed with the substrate.

[0017] By adopting the above scheme, by making the support platform and the substrate integrally connected and integrally formed, on the one hand, the connection reliability, connection tightness, connection stability, and connection strength between the support platform and the substrate can be enhanced, the assembly process between the support platform and the substrate can be simplified, and the assembly convenience and assembly efficiency between the support platform and the substrate can be improved. On the other hand, the stability and rigidity of the overall structure of the support platform and the substrate can be enhanced, the risk of looseness at the connection between the support platform and the substrate can be reduced, the layout of the support platform on the substrate can be stabilized, and some recesses can be formed by the support platform and the substrate. Based on this, it is easy to quickly and accurately position and install each battery cell to the corresponding support platform or the corresponding recess, thereby improving the structural reliability, assembly quality, assembly efficiency, and yield rate of the battery.

[0018] In some embodiments, the substrate is a thermal management component; the thermal management component includes a first plate and a second plate arranged in sequence along a first direction, the first plate and the second plate overlap each other and together form a flow channel; the first plate abuts the second side of each battery cell, and the first plate is stamped to form a support platform.

[0019] By adopting the above scheme, when the substrate is a thermal management component, the first plate member of the thermal management component that abuts the second side of each battery cell can be stamped to form a support platform protruding toward the corresponding second battery cell on the first plate member. Based on this, on the one hand, the required substrate and support platform can be formed through the thermal management component, and the substrate, support platform and thermal management component can be combined into a whole, thereby improving the processing convenience, processing efficiency and processing accuracy of the support platform, simplifying the assembly process between the support platform and the substrate, improving the assembly convenience and assembly efficiency between the support platform and the substrate, and simplifying the structure of the battery. On the one hand, the structural stability and rigidity of the thermal management component formed by the support platform and the substrate can be enhanced, the layout of the support platform can be stabilized, and the thermal management component can be conveniently formed with a concave-convex step structure, so that each battery cell can be quickly and accurately positioned and installed in the concave position and convex platform of the thermal management component, and the assembly quality, assembly efficiency and yield rate of the battery can be improved. On the one hand, the heat exchange area between the thermal management component formed by the support platform and the substrate and each battery cell can be increased, which can facilitate reliable heat exchange between the thermal management component formed by the support platform and the substrate and each battery cell, thereby optimizing the heat exchange effect and heat exchange efficiency of the thermal management component formed by the support platform and the substrate on each battery cell.

[0020] In some embodiments, the battery includes a box body, in which the battery cells are accommodated; the box body includes a base and a frame, and the frame is erected on the base;

[0021] The support platform is integrally formed with the frame.

[0022] By adopting the above scheme, when the box includes a base and a frame, by making the support platform integrally connected and integrally formed with the frame, on the one hand, the assembly process between the support platform and the frame can be simplified, and the assembly convenience and assembly efficiency between the support platform and the box can be improved. On the other hand, the connection reliability, connection tightness, connection stability, and connection strength between the support platform and the frame can be enhanced, the stability and rigidity of the overall structure of the support platform and the frame can be enhanced, the risk of looseness at the connection between the support platform and the frame can be reduced, and the layout of the support platform in the frame and the box can be stabilized. Based on this, it is convenient to quickly and accurately position and stably install each second battery cell to the corresponding support platform, and it is convenient to quickly and accurately install each first battery cell to a position where a support platform is not set, so that it is convenient to quickly realize the assembly of each battery cell and the box, and the structural reliability, assembly quality, assembly efficiency and yield rate of the battery can be improved.

[0023] In some embodiments, flow channels are provided inside both the frame and the support platform, and the flow channels are used for allowing heat exchange fluid to flow therein.

[0024] By adopting the above scheme, by providing flow channels inside the frame and the support platform, on the one hand, the existing space of the integrally formed frame and the support platform can be used to set the flow channels, thereby improving the space utilization rate of the battery and optimizing the energy density of the battery. On the other hand, by forming flow channels inside the frame and the support platform, heat exchange can be carried out between the frame and the support platform and the battery cells abutting therewith, thereby expanding the heat exchange area and optimizing the heat exchange effect and heat exchange efficiency of the battery to the battery cells.

[0025] In some embodiments, the support platform is independently formed.

[0026] By adopting the above solution and independently forming the support platform, the layout of each battery cell on the substrate can be adjusted flexibly and as needed, and the layout of each support platform can be adjusted flexibly and as needed according to the layout of each battery cell, especially according to the layout of each second battery cell. Based on this, the assembly flexibility and structural diversity of the battery can be improved, and the assembly quality, assembly efficiency and yield rate of the battery can be optimized.

[0027] In some embodiments, the first battery cells and the second battery cells are alternately arranged along a second direction, and the second direction is perpendicular to the first direction.

[0028] By adopting the above scheme, by arranging the first battery cell and the second battery cell alternately along the second direction, the number of the first battery cell and the number of the second battery cell can be balanced, and the layout of the first battery cell and the second battery cell can be optimized, so that the battery can be balanced and the advantages of the first battery cell and the second battery cell can be combined to optimize and improve the performance of the battery, which is particularly suitable for the situation where the first battery cell and the second battery cell are different types (such as chemical systems) of battery cells. In addition, corresponding to the layout of each second battery cell, each support platform can be arranged at intervals along the second direction, and a recess can be formed between two adjacent support platforms, so that each first battery cell can be quickly and accurately limited and installed in each recess, and each second battery cell can be quickly and accurately positioned and installed in each support platform, so that the structural reliability, assembly quality, assembly efficiency and yield rate of the battery can be improved.

[0029] In some embodiments, the battery cells arranged side by side along the second direction together form a battery unit, and the second battery cell is arranged at an end side of the battery unit along the second direction, and the second direction is perpendicular to the first direction.

[0030] By adopting the above scheme, by arranging the second battery cell at the end side of the battery unit along the second direction, it is convenient to concentrate the layout of the first battery cell in the battery unit, and it is convenient to concentrate the layout of the second battery cell in the battery unit, so as to optimize and improve the performance of the battery, and it is particularly suitable for the case where the first battery cell and the second battery cell are battery cells of different types (for example, chemical systems). In addition, since the second battery cell is concentrated at the end side of the battery unit along the second direction, the second battery cell can be arranged close to the frame of the box, so that it is convenient to quickly and accurately position and centrally arrange the support platform at a position close to the frame of the box, and it is convenient to quickly and accurately realize the positioning and installation of the second battery cell to the support platform, and it is convenient to quickly and accurately realize the side-by-side arrangement of the first battery cell in the box, so that the assembly quality and efficiency of the battery unit can be improved, and the structural reliability, assembly quality, assembly efficiency and yield rate of the battery can be improved.

[0031] In some embodiments, the substrate is a heat management component, and the support platform is thermally connected between the corresponding second battery cell and the substrate.

[0032] By adopting the above scheme, when the battery includes a thermal management component laid on the second side of each battery cell, the "thermal management component laid on the second side of each battery cell" can be used as a substrate, so that the substrate has the utility of "serving as a common support reference for each battery cell" and the utility of "exchanging heat with each battery cell". Correspondingly, the support table can have the utility of "compensating for the size difference of the corresponding second battery cell along the first direction" and the utility of "heat exchanging and conducting the heat of the corresponding second battery cell to the substrate".

[0033] Thus, on the one hand, the substrate and the thermal management component can be combined into one, the performance and function of the substrate can be optimized, the performance and function of the support platform can be optimized, and the structure of the battery can be simplified. On the one hand, the substrate (i.e., the thermal management component laid on the second side of each battery cell) can be used as a common support reference for each battery cell, and supported between the corresponding second battery cell and the substrate via the support platform, and the size difference between the corresponding second battery cell and the first battery cell along the first direction can be compensated, so that the electrode terminals of each battery cell can be conveniently connected to each other via the current collection component, and the assembly quality, assembly efficiency and yield rate of the battery can be optimized. On the one hand, the substrate (i.e., the thermal management component laid on the second side of each battery cell) can be directly heat exchanged with the first battery cell, and heat exchange and heat conduction can be carried out between the corresponding second battery cell and the substrate via the support platform, so that reliable heat exchange can be carried out on each battery cell, especially heat dissipation can be carried out on each battery cell, so as to reduce the risk of thermal failure of each battery cell, optimize the safety of battery use, and extend the service life of the battery.

[0034] In some embodiments, the support platform is thermally connected to the corresponding second battery core via thermally conductive adhesive.

[0035] By adopting the above scheme, when the substrate is a thermal management component and the support platform is thermally connected between the corresponding second battery cell and the substrate, the support platform and the corresponding second battery cell can be bonded together by a thermally conductive adhesive to enhance the connection strength, connection tightness and thermal conductivity between the support platform and the corresponding second battery cell. That is, the tightness and reliability of the thermal conductive connection between the support platform and the corresponding second battery cell can be enhanced. As a result, it is convenient for the support platform to perform reliable and effective heat exchange with the corresponding second battery cell, and it is convenient for the support platform to reliably and effectively conduct the heat of the corresponding second battery cell to the substrate (that is, the thermal management component laid on the second side of each battery cell), thereby optimizing the heat exchange effect and heat exchange efficiency of the substrate (that is, the thermal management component) on the second battery cell, reducing the risk of thermal failure of the second battery cell, optimizing the safety of battery use, and extending the service life of the battery.

[0036] In some embodiments, the support platform is thermally connected to the substrate via thermally conductive adhesive.

[0037] By adopting the above scheme, when the substrate is a thermal management component, and the support platform is thermally connected between the corresponding second battery cell and the substrate, and the support platform is separately connected to the substrate, the support platform and the substrate can be bonded together by a thermally conductive adhesive to enhance the connection strength, connection tightness and thermal conductivity between the support platform and the substrate. That is, the tightness and reliability of the thermal conductive connection between the support platform and the substrate can be enhanced. As a result, it is convenient for the support platform to perform reliable and effective heat exchange with the substrate, and it is convenient for the support platform to reliably and effectively conduct the heat of the corresponding second battery cell to the substrate (that is, the thermal management component laid on the second side of each battery cell), thereby optimizing the heat exchange effect and heat exchange efficiency of the substrate (that is, the thermal management component) on the second battery cell, reducing the risk of thermal failure of the second battery cell, optimizing the safety of battery use, and extending the service life of the battery.

[0038] In some embodiments, the battery includes a box body, in which the battery cells are accommodated; and the base plate is a wall of the box body for supporting the battery cells.

[0039] By adopting the above scheme, when the battery includes a box, the "wall of the box used to support the battery cell (such as a base)" can be used as a substrate. Based on this, on the one hand, the substrate and the wall of the box can be combined into one, thereby simplifying the structure of the battery. On the other hand, the substrate (i.e., the wall of the box used to support the battery cell) can be used as a common support reference for each battery cell, and supported between the corresponding second battery cell and the substrate via a support table, thereby compensating for the size difference between the corresponding second battery cell and the first battery cell along the first direction, thereby facilitating the electrode terminals of each battery cell to establish an electrical connection relationship via the confluence component, and optimizing the assembly quality, assembly efficiency and yield rate of the battery.

[0040] In some embodiments, the first battery cell is a safety battery cell, and the second battery cell is a ternary battery cell.

[0041] By adopting the above scheme, by making the first battery cell a safety battery cell and the second battery cell a ternary battery cell, the battery can have high energy density, high capacity, high discharge voltage, and long cycle life based on the ternary battery cell, and can have high thermal stability and safety based on the safety battery cell, thereby improving the performance and safety of the battery. This embodiment is particularly suitable for being combined with the previous embodiment to optimize the layout of the safety battery cell and the ternary battery cell, thereby optimizing the performance of the battery.

[0042] In a second aspect, an electrical device is provided, the electrical device comprising the battery provided in an embodiment of the present application.

[0043] By adopting the above solution, the electrical device can optimize the assembly quality, assembly efficiency and yield rate of the electrical device by applying the battery provided in the embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art 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 paying any creative work.

[0045] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0046] Figure 2 An exploded schematic diagram of a battery provided in some embodiments of the present application, wherein a thermal management component is disposed on a second side of each battery cell;

[0047] Figure 3 An exploded schematic diagram of a battery provided for some other embodiments of the present application, wherein the battery cells and the thermal management component are arranged side by side in a direction perpendicular to the first direction;

[0048] Figure 4 A partial structural schematic diagram of a battery provided in some embodiments of the present application, wherein the support platform is integrally formed on a substrate, and the substrate is a thermal management component;

[0049] Figure 5 A partial structural schematic diagram of a battery provided in some other embodiments of the present application, wherein the support platform is integrally formed on a substrate, and the substrate is a wall of a box body for supporting battery cells and thermal management components;

[0050] Figure 6 A partial structural top view of a battery provided in some embodiments of the present application;

[0051] Figure 7 for Figure 6 A cross-sectional view along AA is provided, wherein the support platform is integrally formed with the frame;

[0052] Figure 8 A partial structural cross-sectional view of a battery provided in some embodiments of the present application, wherein flow channels are provided inside both the frame and the support platform;

[0053] Fig. 9 A partial structural cross-sectional view of a battery provided in some embodiments of the present application, wherein the support platform is independently formed.

[0054] Among them, the reference numerals in the figure are:

[0055] 1-battery, 2-controller, 3-motor; 100-battery unit; 10-battery monomer, 10a-first battery cell, 10b-second battery cell, 11-first side, 12-second side, 13-electrode terminal; 20-housing, 21-first part, 22-second part, 221-base, 222-frame, 2221-side beam, 2222-middle beam; 30-thermal management component, 31-first plate, 32-second plate, 33-flow channel; 40-substrate; 50-support platform; 60-recess; z-first direction, x-second direction, H1-dimension of the first battery cell along the first direction, H2-dimension of the second battery cell along the first direction, H3-dimension of the support platform along the first direction. DETAILED DESCRIPTION

[0056] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear and understandable, the application is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0057] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or at least two of the features. In the description of this application, "at least two" means two or more, unless otherwise clearly and specifically defined.

[0059] In this application, unless otherwise clearly specified and limited, the terms "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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In the present application, a battery is a modular structure including at least two battery cells to provide higher voltage and capacity, for example, it can be a battery module, a battery module or a battery pack.

[0061] The battery cell includes an electrode terminal, which is used to be electrically connected to the busbar component to extract the electric energy of the battery cell or to introduce the electric energy into the interior of the battery cell to achieve discharge or charge of the battery cell.

[0062] The busbar is used to realize electrical connection between multiple battery cells, such as parallel connection, series connection or hybrid connection, where hybrid connection refers to a mixture of series connection and parallel connection. The busbar can realize electrical connection between battery cells by connecting (such as welding) the electrode terminals of the battery cells.

[0063] In some cases, differences caused by the design of size, shell material, electrode material, etc., or differences caused by processing errors, or differences caused by different types of chemical systems, may lead to differences in the heights of the battery cells, causing the electrode terminals of each battery cell to be arranged at different heights, making it inconvenient for the electrode terminals of each battery cell to establish an electrical connection relationship through the busbar component.

[0064] Therefore, some embodiments of the present application provide a battery, in which, when there is a difference in the size of each battery cell along the first direction, the battery cell with the largest size along the first direction is used as the first battery cell, and the battery cell with a size smaller than the first battery cell along the first direction is used as the second battery cell. In this case, the present embodiment can use the substrate as a common support reference for each battery cell, so that the substrate is supported on the second side of each battery cell; and the first battery cell is used as an alignment reference, by adding a support table between the second side of each second battery cell and the substrate, so as to support the corresponding second battery cell and the substrate through the support table, and partially or completely make up for the size difference between the corresponding second battery cell and the first battery cell along the first direction, so as to achieve the reduction of the spacing between the electrode terminal of the corresponding second battery cell and the electrode terminal of the first battery cell along the first direction. As a result, it is convenient for the electrode terminals of each battery cell to establish an electrical connection relationship through the confluence component, that is, it is convenient for the electrode terminals of each battery cell to be connected (for example, welded) with the confluence component, so as to optimize the assembly quality, assembly efficiency and yield rate of the battery.

[0065] The battery disclosed in the embodiment of the present application can be used in an electrical device that uses the battery as a power source, or in various energy storage systems that use the battery as an energy storage element. The electrical device may be, but is not limited to, a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0066] In order to illustrate the technical solution provided by the present application, the following is a detailed description with reference to specific drawings and embodiments, and taking "the electrical device being a vehicle" as an example.

[0067] See also Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. The vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1 is provided inside the vehicle, and the battery 1 may be provided at the bottom, head or tail of the vehicle. The battery 1 is used to power the vehicle, for example, the battery 1 can be used as an operating power source for the vehicle. The vehicle may also include a controller 2 and a motor 3, and the controller 2 is used to control the battery 1 to power the motor 3, for example, for starting, navigating and driving the vehicle. Working power requirements.

[0068] In some embodiments of the present application, the battery 1 can be used not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0069] See also Figure 2 , Figure 3 The battery 1 is a modular structure including at least two battery cells 10 to provide a higher voltage and capacity, and may be, for example, a battery module, a battery module or a battery pack. The battery 1 includes a battery cell 10 and a box 20, and the battery cell 10 is accommodated in the box 20.

[0070] The box body 20 is used to provide a storage space for the battery cell 10. The box body 20 can prevent dust, water and protect the battery cell 10 and other components contained therein, reduce the impact of external liquids or other foreign matter on the effectiveness and performance of the battery cell 10 and other components, and effectively extend the service life of the battery 1.

[0071] The box body 20 may adopt a variety of structures. In some embodiments, the box body 20 may include a first portion 21 and a second portion 22, the first portion 21 and the second portion 22 cover each other, and the first portion 21 and the second portion 22 jointly define a storage space for accommodating the battery cell 10. The second portion 22 may be a hollow structure with one end open, and the first portion 21 may be a plate-like structure, and the first portion 21 covers the open side of the second portion 22, so that the first portion 21 and the second portion 22 jointly define a storage space; the first portion 21 and the second portion 22 may also be hollow structures with one side open, and the open side of the first portion 21 covers the open side of the second portion 22.

[0072] The box body 20 may be in various shapes, such as a cylinder, a cuboid, etc.

[0073] The box body 20 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0074] The battery cell 10 is the smallest unit for storing and outputting electric energy. In the battery 1, there can be one battery cell 10 or at least two battery cells 10. When there are at least two battery cells 10, the at least two battery cells 10 can be connected in series, in parallel, or in mixed connection. Mixed connection means that at least two battery cells 10 are connected in series and in parallel.

[0075] The battery cell 10 may be a lithium-ion secondary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc. The battery cell 10 may be cylindrical, flat, rectangular or in other shapes, etc. The battery cell 10 may be packaged in different ways to form a cylindrical battery cell, a square battery cell or a soft-pack battery cell, etc.

[0076] In some embodiments, the battery 1 may further include a thermal management component 30 for performing heat exchange with the battery cell 10 and other components to adjust the temperature of the battery 1. The thermal management component 30 may be accommodated in the box 20. The thermal management component 30 may be a liquid cooling plate. Figure 2 As shown, in some embodiments, the thermal management component 30 can be laid on the same side as the battery cell 10 and other components to facilitate heat exchange with the battery cell 10 and other components. Figure 3As shown, in some embodiments, the thermal management component 30 may also be vertically arranged between two adjacent battery cells 10, so as to contact the large side surface of the battery cell 10 and perform efficient heat exchange with the battery cell 10. Of course, in other embodiments, the schemes of "the thermal management component 30 is laid on the same side of the battery cell 10 and other components" and "the thermal management component 30 is vertically arranged between two adjacent battery cells 10" may be combined. Of course, in other embodiments, the thermal management component 30 may also be an air cooling system, and the airflow generated by the air cooling system may pass through the battery cell 10 and other components, so as to perform heat exchange with the battery cell 10 and other components. Of course, in other embodiments, the thermal management component 30 may also be other structural forms.

[0077] Of course, the battery 1 may also include other structures. For example, the battery 1 may also include a busbar component (not shown) (eg, a busbar) for achieving electrical connection between at least two battery cells 10 .

[0078] Of course, in some embodiments, the battery 1 may not include the box body 20, but at least two battery cells 10 are electrically connected and formed into a whole through necessary fixing structures and then assembled into an electrical device.

[0079] See also Figure 4 , Figure 5 Some embodiments of the present application provide a battery 1, which includes a battery cell 10, a substrate 40 and a support platform 50. There are at least two battery cells 10. The battery cell 10 has a first side 11 and a second side 12 opposite to each other along a first direction z, and the first side 11 of each battery cell 10 is provided with an electrode terminal 13. Along the first direction z, the battery cell 10 with the largest size is the first battery cell 10a, and the battery cell 10 with a size smaller than the size H1 of the first battery cell 10a is the second battery cell 10b. The substrate 40 supports the second side 12 of each battery cell 10. The support platform 50 is arranged corresponding to the second battery cell 10b, and the support platform 50 is supported between the corresponding second battery cell 10b and the substrate 40.

[0080] It should be noted that the battery cell 10 is the smallest unit for storing and outputting electric energy. Along the first direction z, the battery cell 10 has a first side 11 and a second side 12 that are opposite to each other. The battery cell 10 is provided with an electrode terminal 13 on its first side 11. The electrode terminal 13 is a component for outputting or inputting electric energy. That is, the electrode terminal 13 is used to be electrically connected to the busbar component to output the electric energy of the battery cell 10 or to introduce the electric energy into the interior of the battery cell 10, so as to realize the discharge or charging of the battery cell 10. The electrode terminal 13 includes a positive electrode terminal and a negative electrode terminal, and the positive electrode terminal and the negative electrode terminal are both provided on the first side 11 of the battery cell 10.

[0081] In this embodiment, at least two battery cells 10 are provided. In this embodiment, the substrate 40 is used as a common support reference for each battery cell 10, so that the substrate 40 is supported on the second side 12 of each battery cell 10. The substrate 40 is a plate-like structure. The substrate 40 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0082] In the case where the substrate 40 is used as a common support reference, along the first direction z, the size of each battery cell 10 may differ due to design reasons such as size, shell material, electrode material, etc., may differ due to reasons such as processing errors, or may differ due to different types such as chemical systems. In this case, the present embodiment uses the battery cell 10 with the largest size along the first direction z as the first battery cell 10a, and the number of the first battery cells 10a can be one or at least two (that is, there are at least two battery cells 10 with the largest size and the same size along the first direction z). In this embodiment, the battery cell 10 with a size smaller than the size H1 of the first battery cell 10a along the first direction z is the second battery cell 10b, and the number of the second battery cells 10b is at least one. In the case where the number of the second battery cells 10b is at least two, the size H2 of each second battery cell 10b along the first direction z can be set the same or different, and the size, shell material, electrode material, chemical system, etc. of each second battery cell 10b can be set the same or different.

[0083] On this basis, a support platform 50 can be added between the second side 12 of each second battery cell 10b and the substrate 40, so as to be supported between the corresponding second battery cell 10b and the substrate 40 via the support platform 50. The support platform 50 can partially make up for or completely make up for the size difference between the corresponding second battery cell 10b and the first battery cell 10a. The distance between the electrode terminal 13 of the corresponding second battery cell 10b and the electrode terminal 13 of the first battery cell 10a is reduced along the first direction z. Among them, the corresponding second battery cell 10b refers to the second battery cell 10b corresponding to the support platform 50, and each support platform 50 can be specifically designed according to the corresponding second battery cell 10b. Among them, the support platform 50 can be in a variety of shapes, such as a cuboid, a cylinder, a truncated cone, etc. Among them, the support platform 50 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0084] Based on this, the substrate 40 can be used as a common support reference, the first battery cell 10a can be used as an alignment reference, and the support platform 50 can partially or completely make up for the size difference of the corresponding second battery cell 10b along the first direction z, so as to reduce the distance between the electrode terminal 13 of the corresponding second battery cell 10b and the electrode terminal 13 of the first battery cell 10a along the first direction z. In this way, the electrode terminals 13 of each battery cell 10 can be easily connected to each other through the busbar, so that each battery cell 10 can be connected in series, parallel or mixed. Among them, mixed means a mixture of series and parallel.

[0085] In summary, in the battery 1 provided in the embodiment of the present application, when the sizes of the battery cells 10 along the first direction z are different, the battery cell 10 with the largest size along the first direction z is used as the first battery cell 10a, and the battery cell 10 with a size H1 smaller than the first battery cell 10a along the first direction z is used as the second battery cell 10b. In this case, the present embodiment can use the substrate 40 as a common support reference for the battery cells 10, so that the substrate 40 is supported on the second side 12 of each battery cell 10; and use the first battery cell 10a as an alignment reference, by adding a support platform 50 between the second side 12 of each second battery cell 10b and the substrate 40, so that the support platform 50 is supported between the corresponding second battery cell 10b and the substrate 40, and the size difference along the first direction z between the corresponding second battery cell 10b and the first battery cell 10a is partially or completely compensated, so that the distance between the electrode terminal 13 of the corresponding second battery cell 10b and the electrode terminal 13 of the first battery cell 10a can be reduced along the first direction z. In this way, the electrode terminals 13 of each battery cell 10 can be easily electrically connected via the busbar component, that is, the electrode terminals 13 of each battery cell 10 can be easily connected (such as welded) to the busbar component, thereby optimizing the assembly quality, assembly efficiency and yield rate of the battery 1.

[0086] This embodiment is particularly suitable for batteries 1 including battery cells 10 of different types (e.g., chemical systems). Such a configuration not only facilitates the battery 1 to combine the advantages of different types of battery cells 10 to optimize the performance of the battery 1, but also facilitates reducing the spacing between the electrode terminals 13 of each battery cell 10 along the first direction z, so that the electrode terminals 13 of each battery cell 10 can establish an electrical connection relationship through the busbar component.

[0087] See also Figure 4 , Figure 5 In some embodiments of the present application, along the first direction z, the difference between the total size of the support platform 50 and the corresponding second battery cell 10b and the size H1 of the first battery cell 10a is configured to be smaller than the size difference between the first battery cell 10a and the corresponding second battery cell 10b.

[0088] It should be noted that, along the first direction z, the total size of the support platform 50 and the corresponding second battery cell 10 b is the sum of the size H3 of the support platform 50 and the size H2 of the corresponding second battery cell 10 b , ie, H3+H2.

[0089] Along the first direction z, the difference between the total size of the support platform 50 and the corresponding second battery cell 10b and the size H1 of the first battery cell 10a is H3+H2-H1. Since the electrode terminal 13 of the second battery cell 10b may be higher, lower or flush with the electrode terminal 13 of the first battery cell 10a under the support of the corresponding support platform 50, H3+H2 may be greater than, less than or equal to H1. For ease of comparison, the absolute value may be taken, namely |H3+H2-H1|.

[0090] Along the first direction z, the size difference between the first battery cell 10 a and the corresponding second battery cell 10 b , that is, the difference between the size H1 of the first battery cell 10 a and the size H2 of the corresponding second battery cell 10 b , is H1 −H2 .

[0091] Along the first direction z, |H3+H2-H1| is smaller than H1-H2.

[0092] By adopting the above solution, the support platform 50 can clearly reduce the size difference between the second battery cell 10b and the first battery cell 10a along the first direction z, and can clearly reduce the distance between the electrode terminal 13 of the second battery cell 10b and the electrode terminal 13 of the first battery cell 10a along the first direction z. Therefore, it is convenient for the electrode terminals 13 of each battery cell 10 to establish an electrical connection relationship through the busbar component, and the assembly quality, assembly efficiency and yield rate of the battery 1 can be optimized.

[0093] See also Figure 4 , Figure 5 In some embodiments of the present application, the electrode terminals 13 of each battery cell 10 are coplanar.

[0094] It should be noted that, along the first direction z, the size H3 of the support platform 50 can be set according to the difference between the size H1 of the first battery cell 10a and the size H2 of the corresponding second battery cell 10b, that is, H3 is equal to H1-H2. Based on this, the support platform 50 can completely make up for the size difference between the corresponding second battery cell 10b and the first battery cell 10a, so that the electrode terminal 13 of the corresponding second battery cell 10b is coplanar with the electrode terminal 13 of the first battery cell 10a. Among them, "the electrode terminal 13 of the corresponding second battery cell 10b is coplanar with the electrode terminal 13 of the first battery cell 10a" means: the end surface of the electrode terminal 13 of the corresponding second battery cell 10b is flush with the end surface of the electrode terminal 13 of the first battery cell 10a in the same plane.

[0095] By analogy, the electrode terminals 13 of each battery cell 10 can be made to be coplanar.

[0096] By adopting the above scheme, the size H3 of the support platform 50 can be set in a targeted and adaptive manner according to the difference between the size H1 of the first battery cell 10a and the size H2 of the corresponding second battery cell 10b, so that the support platform 50 can completely make up for the size difference between the corresponding second battery cell 10b and the first battery cell 10a, so that the electrode terminal 13 of the corresponding second battery cell 10b can be coplanar with the electrode terminal 13 of the first battery cell 10a. In this way, the electrode terminals 13 of each battery cell 10 can be made coplanar, so that the electrode terminals 13 of each battery cell 10 can be conveniently connected to each other via the busbar, and the assembly quality, assembly efficiency and yield rate of the battery 1 can be optimized.

[0097] See also Figure 4 , Figure 5 In some embodiments of the present application, a flow channel 33 is provided in the support platform 50, and the flow channel 33 is used for allowing the heat exchange fluid to flow therein.

[0098] It should be noted that a flow channel 33 is provided inside the support platform 50. The flow channel 33 can be extended in a straight line or in a curved extension. The flow channel 33 can be used to flow a heat exchange fluid. The heat exchange fluid can be used to adjust the temperature of the battery cell 10, and the heat exchange fluid can be a liquid or a gas. In some embodiments, the heat exchange fluid can be circulated to achieve a better temperature regulation effect. The heat exchange fluid can be, but is not limited to, water, a mixture of water and ethylene glycol, or air.

[0099] The support platform 50 may be a heat-conducting material, that is, the support platform 50 may include a heat-conducting material, may have heat-conducting properties, and may play a heat-conducting role, that is, play a heat exchange and heat conduction role. The support platform 50 may be, but is not limited to, a metal part, such as an iron part or an aluminum part.

[0100] By adopting the above solution, by setting the flow channel 33 in the support platform 50, on the one hand, the existing space of the support platform 50 can be used to set the flow channel 33, thereby improving the space utilization rate of the battery 1 and optimizing the energy density of the battery 1. On the other hand, on the basis of the support platform 50 supporting the corresponding second battery cell 10b, the support platform 50 can also flow the heat exchange fluid through the flow channel 33 to perform heat exchange with the corresponding second battery cell 10b, and even in the case where the first battery cell 10a is abutted against the side of the support platform 50, it can also perform heat exchange with the corresponding first battery cell 10a, thereby optimizing the heat exchange effect and heat exchange efficiency of the battery 1 to the battery cell 10, making it easy to reliably adjust the temperature of the battery cell 10, and promoting the normal operation of the battery cell 10.

[0101] Of course, in other embodiments, the location, width, extension path, etc. of the flow channel 33 may be designed according to the requirements of heat exchange effect and heat exchange efficiency to optimize the heat exchange effect and heat exchange efficiency.

[0102] See also Figure 4 , Figure 5 In some embodiments of the present application, the support platform 50 is integrally formed on the substrate 40 .

[0103] It should be noted that the support platform 50 is integrally formed on the substrate 40, that is, the support platform 50 may be a boss integrally formed on the substrate 40. The integrally formed means that the support platform 50 is formed by an integral process such as extrusion, injection molding, die casting, 3D printing, etc.

[0104] By adopting the above scheme, by making the support platform 50 and the substrate 40 integrally connected and integrally formed, on the one hand, the connection reliability, connection tightness, connection stability, and connection strength between the support platform 50 and the substrate 40 can be enhanced, the assembly process between the support platform 50 and the substrate 40 can be simplified, and the assembly convenience and assembly efficiency between the support platform 50 and the substrate 40 can be improved. On the other hand, the stability and rigidity of the overall structure of the support platform 50 and the substrate 40 can be enhanced, the risk of looseness at the connection between the support platform 50 and the substrate 40 can be reduced, the layout of the support platform 50 on the substrate 40 can be stabilized, and some recesses 60 can be formed by the support platform 50 and the substrate 40. Based on this, it is convenient to quickly and accurately realize the positioning and installation of each battery cell 10 to the corresponding support platform 50 or the corresponding recess 60, thereby improving the structural reliability, assembly quality, assembly efficiency and yield rate of the battery 1.

[0105] See also Figure 4 In some embodiments of the present application, the substrate 40 is a thermal management component 30. The thermal management component 30 includes a first plate 31 and a second plate 32 sequentially arranged along a first direction z, and the first plate 31 and the second plate 32 overlap each other and jointly enclose a flow channel 33. The first plate 31 abuts against the second side 12 of each battery cell 10, and the first plate 31 is stamped to form a support platform 50.

[0106] It should be noted that, in some embodiments, the battery 1 includes a thermal management component 30 laid on the second side 12 of each battery cell 10. In this case, the "thermal management component 30 laid on the second side 12 of each battery cell 10" can be used as the substrate 40, so that the substrate 40 has the utility of "serving as a common support reference for each battery cell 10" and the utility of "performing heat exchange with each battery cell 10". The thermal management component 30 can be a liquid cooling plate.

[0107] The thermal management component 30 can adopt a variety of structures. In some embodiments, the thermal management component 30 includes a first plate 31 and a second plate 32. The first plate 31 and the second plate 32 are arranged in sequence along the first direction z, and the first plate 31 is a plate for abutting the second side 12 of each battery cell 10. The first plate 31 and the second plate 32 overlap each other. A flow channel 33 is provided between the first plate 31 and the second plate 32 (for example, the side of the first plate 31 facing the second plate 32 and the side of the second plate 32 facing the first plate 31). The flow channel 33 can be extended in a straight line or in a curved extension. The flow channel 33 can be used to flow a heat exchange fluid. Among them, the heat exchange fluid can be used to adjust the temperature of the battery cell 10, and the heat exchange fluid can be a liquid or a gas. In some embodiments, the heat exchange fluid can be circulated to achieve a better temperature regulation effect. Among them, the heat exchange fluid can be but not limited to water, a mixture of water and ethylene glycol, or air, etc. The first plate 31 includes a heat-conducting material, has a heat-conducting property, and can play a heat-conducting role, that is, play a heat exchange and heat conduction role. The first plate 31 can be, but is not limited to, a metal part. The second plate 32 includes a heat-conducting material, has a heat-conducting property, and can play a heat-conducting role, that is, play a heat exchange and heat conduction role. The second plate 32 can be, but is not limited to, a metal part. The heat exchange effect and heat exchange efficiency of the thermal management component 30 can be optimized by designing the width and extension path of the flow channel 33.

[0108] Based on the above structure, the first plate 31 can be stamped to integrally form a support platform 50 protruding toward the corresponding second battery cell 10b on the first plate 31. That is, this embodiment is applicable to the case where "the substrate 40 is the thermal management component 30, and the support platform 50 is integrally formed on the substrate 40".

[0109] By adopting the above scheme, when the substrate 40 is the thermal management component 30, the first plate 31 of the thermal management component 30 that abuts the second side 12 of each battery cell 10 can be stamped and formed, so as to integrally form a support platform 50 protruding toward the corresponding second battery cell 10b on the first plate 31. Based on this, on the one hand, the required substrate 40 and support platform 50 can be formed through the thermal management component 30, and the substrate 40, the support platform 50 and the thermal management component 30 can be combined into a whole, so that the processing convenience, processing efficiency and processing accuracy of the support platform 50 can be improved, the assembly process between the support platform 50 and the substrate 40 can be simplified, the assembly convenience and assembly efficiency between the support platform 50 and the substrate 40 can be improved, and the structure of the battery 1 can be simplified. On the one hand, the structural stability and rigidity of the thermal management component 30 formed by the support platform 50 and the substrate 40 can be enhanced, the layout of the support platform 50 can be stabilized, and the thermal management component 30 can be conveniently formed with a concave-convex step structure, so that each battery cell 10 can be quickly and accurately positioned and installed in the concave position 60 and the convex platform of the thermal management component 30, and the assembly quality, assembly efficiency and yield rate of the battery 1 can be improved. On the one hand, the heat exchange area between the thermal management component 30 formed by the support platform 50 and the substrate 40 and each battery cell 10 can be increased, and the thermal management component 30 formed by the support platform 50 and the substrate 40 and each battery cell 10 can be conveniently reliable heat exchanged, so that the heat exchange effect and heat exchange efficiency of the thermal management component 30 formed by the support platform 50 and the substrate 40 on each battery cell 10 can be optimized.

[0110] This embodiment is particularly suitable for application in combination with the embodiment of "a flow channel 33 is provided in the support platform 50". In this way, the existing space of the support platform 50 can be used to set a wider, higher, and larger flow channel 33, thereby improving space utilization and optimizing the heat exchange effect and heat exchange efficiency of the thermal management component 30 on the battery cell 10.

[0111] See also Figure 6 , Figure 7 In some embodiments of the present application, the battery 1 includes a box 20, and the battery cell 10 is accommodated in the box 20. The box 20 includes a base 221 and a frame 222, and the frame 222 is erected on the base 221. The support platform 50 is integrally formed on the frame 222.

[0112] It should be noted that the box 20 is used to provide a storage space for the battery cell 10. The box 20 can prevent dust, water and protect the battery cell 10 and other components contained therein, reduce the impact of external liquids or other foreign matter on the effectiveness and performance of the battery cell 10 and other components, and effectively extend the service life of the battery 1.

[0113] Among them, the box body 20 can adopt a variety of structures. In some embodiments, the box body 20 may include a base 221 and a frame 222. The base 221 is a structure for supporting components such as a battery cell 10. The frame 222 is a structure formed by connecting at least three beams (such as a side beam 2221, a middle beam 2222, etc.). The frame 222 is erected on the base 221. In other words, the base 221 covers an opening on one side of the frame 222. The frame 222 is fixedly connected to the base 221. The frame 222 and the base 221 can be enclosed together to form a storage space for accommodating the battery cell 10. Among them, the connection method between the frame 222 and the base 221 can be adopted, but not limited to, bolt connection, bonding, clamping, riveting, welding, one-piece molding, etc.

[0114] The frame 222 may include at least three side beams 2221 arranged around the edge of the base 221, and the side beams 2221 are connected end to end to form a frame-shaped structure. In some embodiments, the frame 222 may also include a middle beam 2222 (not limited to a cross beam or a longitudinal beam) connected between two side beams 2221, and the middle beam 2222 may be used to enhance the structural strength and divide the space enclosed by the side beams 2221 into at least two spaces.

[0115] The box body 20 may be in various shapes, such as a cylinder, a cuboid, etc.

[0116] The box body 20 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0117] Based on the above structure, the support platform 50 can be integrally formed on the frame 222. In particular, the support platform 50 can be integrally formed on any beam (such as the side beam 2221, the middle beam 2222, etc.) of the frame 222 as required, and can be flexibly and accurately arranged at a desired position.

[0118] Among them, one-piece molding refers to the use of one-piece processes such as extrusion, injection molding, die-casting, and 3D printing to produce parts.

[0119] By adopting the above scheme, when the box body 20 includes a base 221 and a frame 222, by making the support platform 50 integrally connected and integrally formed with the frame 222, on the one hand, the assembly process between the support platform 50 and the frame 222 can be simplified, and the assembly convenience and efficiency between the support platform 50 and the box body 20 can be improved. On the other hand, the connection reliability, connection tightness, connection stability, and connection strength between the support platform 50 and the frame 222 can be enhanced, the stability and rigidity of the overall structure of the support platform 50 and the frame 222 can be enhanced, the risk of loosening at the connection between the support platform 50 and the frame 222 can be reduced, and the layout of the support platform 50 in the frame 222 and the box body 20 can be stabilized. Based on this, it is convenient to quickly and accurately position and stably install each second battery cell 10b to the corresponding support platform 50, and it is convenient to quickly and accurately install each first battery cell 10a to a position where the support platform 50 is not set, so as to facilitate the rapid assembly of each battery cell 10 and the box body 20, and improve the structural reliability, assembly quality, assembly efficiency and yield rate of the battery 1.

[0120] See also Figure 8 In some embodiments of the present application, a flow channel 33 is provided inside both the frame 222 and the support platform 50 , and the flow channel 33 is used for allowing the heat exchange fluid to flow therein.

[0121] It should be noted that a flow channel 33 is provided inside the support platform 50, and the flow channel 33 can be extended in a straight line or in a curved extension. A flow channel 33 is also provided inside the frame 222, and the flow channel 33 can be extended in a straight line or in a curved extension. The flow channel 33 can be used to flow a heat exchange fluid. The heat exchange fluid can be used to adjust the temperature of the battery cell 10, and the heat exchange fluid can be a liquid or a gas. The heat exchange fluid can be, but is not limited to, water, a mixture of water and ethylene glycol, or air.

[0122] In some embodiments, the flow channel 33 of the support platform 50 and the flow channel 33 of the frame 222 may be part of the circulation channel, so that the heat exchange fluid can circulate in the flow channel 33 of the support platform 50 and the flow channel 33 of the frame 222, thereby achieving a better temperature regulation effect.

[0123] The support platform 50 may be a heat-conducting material, that is, the support platform 50 may include a heat-conducting material, may have heat-conducting properties, and may play a heat-conducting role, that is, play a heat exchange and heat conduction role. The support platform 50 may be, but is not limited to, a metal part, such as an iron part or an aluminum part.

[0124] The frame 222 may be made of a heat-conducting material, that is, the frame 222 may include a heat-conducting material, may have heat-conducting properties, and may play a heat-conducting role, that is, play a heat exchange and heat conduction role. The frame 222 may be, but is not limited to, a metal part, such as an iron part or an aluminum part.

[0125] By adopting the above scheme, by providing the flow channel 33 inside both the frame 222 and the support platform 50, on the one hand, the existing space of the frame 222 and the support platform 50 formed in one piece can be used to set the flow channel 33, thereby improving the space utilization of the battery 1 and optimizing the energy density of the battery 1. On the other hand, by forming the flow channel 33 inside both the frame 222 and the support platform 50, heat exchange can be performed through the frame 222 and the support platform 50 and the battery cell 10 (especially the second battery cell 10b) abutting therewith, thereby expanding the heat exchange area and optimizing the heat exchange effect and heat exchange efficiency of the battery 1 to the battery cell 10.

[0126] Of course, in other embodiments, the flow channel 33 may be provided only inside the frame 222 , the flow channel 33 may be provided only inside the support platform 50 , or the flow channel 33 may not be provided inside either the frame 222 or the support platform 50 .

[0127] Of course, in other embodiments, the location, width, extension path, etc. of the flow channel 33 may be designed according to the requirements of heat exchange effect and heat exchange efficiency to optimize the heat exchange effect and heat exchange efficiency.

[0128] See also Fig. 9 In some embodiments of the present application, the support platform 50 is independently formed.

[0129] It should be noted that the support platform 50 can be an independently formed individual component. The support platform 50 can be separately connected with the substrate 40 or other components of the battery 1 such as the box 20 to stabilize the installation position and installation state. Among them, the separate connection method can be adopted but not limited to bolt connection, bonding, clamping, riveting, welding, etc.

[0130] By adopting the above solution, by independently forming the support platform 50, the layout of each battery cell 10 on the substrate 40 can be adjusted flexibly and as needed, and the layout of each support platform 50 can be adjusted flexibly and as needed according to the layout of each battery cell 10, especially according to the layout of each second battery cell 10b. Based on this, the assembly flexibility and structural diversity of the battery 1 can be improved, and the assembly quality, assembly efficiency and yield rate of the battery 1 can be optimized.

[0131] See also Figure 4 , Figure 5 In some embodiments of the present application, the first battery cells 10a and the second battery cells 10b are alternately arranged along the second direction x, and the second direction x is perpendicular to the first direction z.

[0132] It should be noted that the first battery cells 10a and the second battery cells 10b are alternately arranged along the second direction x. That is, along the second direction x, the adjacent battery cells 10 of the first battery cells 10a are the second battery cells 10b, the adjacent battery cells 10 of the second battery cells 10b are the first battery cells 10a, one second battery cell 10b is arranged between two adjacent first battery cells 10a, and one first battery cell 10a is arranged between two adjacent second battery cells 10b. The second direction x is perpendicular to the first direction z.

[0133] By adopting the above scheme, by making the first battery cells 10a and the second battery cells 10b alternately arranged along the second direction x, the number of the first battery cells 10a and the number of the second battery cells 10b can be balanced, and the layout of the first battery cells 10a and the second battery cells 10b can be optimized, so that the battery 1 can be balanced and combine the advantages of the first battery cells 10a and the second battery cells 10b, and optimize and improve the performance of the battery 1, which is particularly suitable for the situation where the first battery cells 10a and the second battery cells 10b are different types (for example, chemical systems) of battery cells 10. In addition, corresponding to the layout of each second battery cell 10b, each support platform 50 can also be arranged at intervals along the second direction x, and a recess 60 can be formed between two adjacent support platforms 50, so that each first battery cell 10a can be quickly and accurately limited and installed in each recess 60, and each second battery cell 10b can be quickly and accurately positioned and installed in each support platform 50, so that the structural reliability, assembly quality, assembly efficiency and yield rate of the battery 1 can be improved.

[0134] This embodiment is particularly suitable for application in combination with the embodiment of "the support platform 50 is integrally formed on the substrate 40". With such an arrangement, it is convenient to directly form each support platform 50 spaced along the second direction x and the concave position 60 corresponding to the space between two adjacent support platforms 50 during the integral forming of the substrate 40 and the support platform 50, thereby omitting the positioning step and the assembly step of the support platform 50, and conveniently realizing the limited installation of each first battery cell 10a to each concave position 60 quickly and accurately, and conveniently realizing the positioning and installation of each second battery cell 10b to each support platform 50 quickly and accurately, thereby improving the structural reliability, assembly quality, assembly efficiency and yield rate of the battery 1.

[0135] See also Figure 6 , Figure 7 In some embodiments of the present application, the battery cells 10 arranged side by side along the second direction x together form a battery unit 100, and the second battery cell 10b is arranged at the end side of the battery unit 100 along the second direction x, and the second direction x is perpendicular to the first direction z.

[0136] It should be noted that the battery cells 10 arranged side by side along the second direction x can form a battery unit 100 together. At least one battery unit 100 can be provided. A second battery cell 10b can be provided at one end side or two opposite ends of the battery unit 100 along the second direction x. At the end side of the battery unit 100 along the second direction x, one second battery cell 10b can be provided, or at least two second battery cells 10b can be provided side by side. In the battery unit 100, the battery cells 10 other than the second battery cell 10b are all first battery cells 10a. The second direction x is perpendicular to the first direction z.

[0137] For example, Figure 6 As shown, in some embodiments, the battery unit 100 includes 11 first battery cells 10a arranged side by side along the second direction x, and one second battery cell 10b located at one end of the battery unit 100 along the second direction x.

[0138] By adopting the above scheme, by arranging the second battery cell 10b at the end side of the battery unit 100 along the second direction x, it is convenient to concentrate the layout of the first battery cell 10a in the battery unit 100, and it is convenient to concentrate the layout of the second battery cell 10b in the battery unit 100, so as to optimize and improve the performance of the battery 1, which is particularly suitable for the situation where the first battery cell 10a and the second battery cell 10b are battery cells 10 of different types (for example, chemical systems). Furthermore, since the second battery cells 10b are concentrated on the end side of the battery unit 100 along the second direction x, the second battery cells 10b can be arranged close to the frame 222 of the box body 20, so that the support platform 50 can be quickly and accurately arranged at a position close to the frame 222 of the box body 20, and the second battery cells 10b can be quickly and accurately positioned and installed on the support platform 50, and the first battery cells 10a can be quickly and accurately arranged side by side in the box body 20, thereby improving the assembly quality and efficiency of the battery unit 100, and improving the structural reliability, assembly quality, assembly efficiency and yield rate of the battery 1.

[0139] This embodiment is particularly suitable for application in combination with the embodiment of "the support platform 50 is integrally formed on the frame 222". With such an arrangement, it is convenient to form the support platform 50 disposed near the frame 222 during the molding of the frame 222, thereby omitting the positioning step and the assembly step of the support platform 50, and it is convenient to quickly and accurately realize the positioning and installation of the second battery cell 10b on the support platform 50, and it is convenient to quickly and accurately realize the side-by-side arrangement of the first battery cell 10a in the box body 20, thereby improving the assembly quality and assembly efficiency of the battery unit 100, and improving the structural reliability, assembly quality, assembly efficiency and yield rate of the battery 1.

[0140] See also Figure 4 , Figure 7 , Fig. 9In some embodiments of the present application, the substrate 40 is the thermal management component 30 , and the support platform 50 is thermally connected between the corresponding second battery cell 10 b and the substrate 40 .

[0141] It should be noted that the present embodiment is applicable to situations such as “the support platform 50 is integrally formed on the substrate 40 ”, “the support platform 50 is integrally formed on the frame 222 ”, and “the support platform 50 is independently formed”.

[0142] It should also be noted that the battery 1 may include a thermal management component 30, and the thermal management component 30 is used to perform heat exchange with components such as the battery cell 10 to adjust the temperature of the battery 1. The thermal management component 30 may be a liquid cooling plate.

[0143] At least one thermal management component 30 may be provided, and at least one thermal management component 30 may be laid on the second side 12 of each battery cell 10. Of course, in the case where at least two thermal management components 30 are provided, on the basis of laying at least one thermal management component 30 on the second side 12 of each battery cell 10, other thermal management components 30 may be flexibly arranged, for example, they may be erected between two adjacent battery cells 10.

[0144] Based on this, the “heat management component 30 laid on the second side 12 of each battery cell 10” can be used as the substrate 40, so that the substrate 40 can serve as a common support reference for each battery cell 10 and can also perform heat exchange with each battery cell 10, thereby optimizing the performance and function of the substrate 40. Among them, at least the portion of the substrate 40 that abuts against each battery cell 10 and each support platform 50 includes a heat conductive material, has heat conductive properties, and can play a heat conductive role, that is, play a heat exchange and heat conduction role.

[0145] Correspondingly, the support platform 50 can be supported between the substrate 40 and the corresponding second battery cell 10b, and can be thermally connected between the substrate 40 and the corresponding second battery cell 10b, so as to optimize the performance and function of the support platform 50. That is, the support platform 50 has the effect of "making up for the size difference of the corresponding second battery cell 10b along the first direction z", and also has the effect of "heat exchange and heat conduction of the corresponding second battery cell 10b to the substrate 40". Among them, the support platform 50 includes a heat-conducting material, has heat-conducting properties, and can play a heat-conducting role, that is, play a heat exchange and heat conduction role.

[0146] By adopting the above solution, when the battery 1 includes the thermal management component 30 laid on the second side 12 of each battery cell 10, the “thermal management component 30 laid on the second side 12 of each battery cell 10” can be used as the substrate 40, so that the substrate 40 has the utility of “serving as a common support reference for each battery cell 10” and the utility of “performing heat exchange with each battery cell 10”. Correspondingly, the support platform 50 can have the utility of “compensating for the size difference of the corresponding second battery cell 10b along the first direction z” and the utility of “heat exchange and heat conduction of the heat of the corresponding second battery cell 10b to the substrate 40”.

[0147] Thus, on the one hand, the substrate 40 and the thermal management component 30 can be combined into one, the performance and function of the substrate 40 can be optimized, the performance and function of the support platform 50 can be optimized, and the structure of the battery 1 can be simplified. On the one hand, the substrate 40 (i.e., the thermal management component 30 laid on the second side 12 of each battery cell 10) can be used as a common support reference for each battery cell 10, and supported between the corresponding second battery cell 10b and the substrate 40 through the support platform 50, thereby compensating for the size difference between the corresponding second battery cell 10b and the first battery cell 10a along the first direction z, so that the electrode terminals 13 of each battery cell 10 can be conveniently connected via the busbar component, and the assembly quality, assembly efficiency and yield rate of the battery 1 can be optimized. On the one hand, direct heat exchange can be performed with the first battery cell 10a via the substrate 40 (i.e., the thermal management component 30 laid on the second side 12 of each battery cell 10), and heat exchange and heat conduction can be performed between the corresponding second battery cell 10b and the substrate 40 via the support platform 50, thereby facilitating reliable heat exchange of each battery cell 10, and especially facilitating heat dissipation of each battery cell 10, thereby reducing the risk of thermal failure of each battery cell 10, optimizing the safety of battery 1, and extending the service life of battery 1.

[0148] In some embodiments, the support platform 50 includes an insulating material, has insulating properties, and can play an insulating role. For example, an insulating film or insulating coating can be provided on the surface of the support platform 50. Based on the insulating properties of the support platform 50, the support platform 50 and the corresponding second battery cell 10b, and the support platform 50 and the substrate 40 can be insulated, thereby reducing the risk of short circuit between the corresponding second battery cell 10b, the support platform 50, and the substrate 40.

[0149] See also Figure 4 , Figure 7 , Fig. 9 In some embodiments of the present application, the support platform 50 is thermally connected to the corresponding second battery core 10b through a thermally conductive adhesive.

[0150] It should be noted that, when the substrate 40 is a thermal management component 30 and the support platform 50 is thermally connected between the corresponding second battery cell 10b and the substrate 40, a thermally conductive adhesive may be provided at the connection between the support platform 50 and the corresponding second battery cell 10b, so as to bond the support platform 50 and the corresponding second battery cell 10b together through the thermally conductive adhesive, so as to enhance the connection strength, connection tightness and thermal conductivity between the support platform 50 and the corresponding second battery cell 10b. The thermally conductive adhesive may be, but is not limited to, a single-component epoxy thermally conductive adhesive, a neutral single-component room temperature moisture-curing silicone rubber, a thermally conductive silicone gel, and the like.

[0151] By adopting the above scheme, when the substrate 40 is a thermal management component 30 and the support platform 50 is thermally connected between the corresponding second battery cell 10b and the substrate 40, the support platform 50 and the corresponding second battery cell 10b can be bonded together by a thermally conductive adhesive to enhance the connection strength, connection tightness and thermal conductivity between the support platform 50 and the corresponding second battery cell 10b. That is, the tightness and reliability of the thermal connection between the support platform 50 and the corresponding second battery cell 10b can be enhanced. As a result, it is convenient for the support platform 50 to reliably and effectively exchange heat with the corresponding second battery cell 10b, and it is convenient for the support platform 50 to reliably and effectively conduct the heat of the corresponding second battery cell 10b to the substrate 40 (that is, the thermal management component 30 laid on the second side 12 of each battery cell 10), so that the heat exchange effect and heat exchange efficiency of the substrate 40 (that is, the thermal management component 30) on the second battery cell 10b can be optimized, the risk of thermal failure of the second battery cell 10b can be reduced, the use safety of the battery 1 can be optimized, and the service life of the battery 1 can be extended.

[0152] Of course, in other embodiments, the support platform 50 may be thermally connected to the corresponding second battery core 10 b by abutment or the like.

[0153] See also Figure 4 , Figure 7 , Fig. 9 In some embodiments of the present application, the support platform 50 is thermally connected to the substrate 40 via a thermally conductive adhesive.

[0154] It should be noted that, when the substrate 40 is a thermal management component 30, and the support platform 50 is thermally connected between the corresponding second battery cell 10b and the substrate 40, and the support platform 50 is separately connected to the substrate 40, a thermally conductive adhesive may be provided at the connection between the support platform 50 and the substrate 40, so as to bond the support platform 50 and the substrate 40 together through the thermally conductive adhesive, so as to enhance the connection strength, connection tightness and thermal conductivity between the support platform 50 and the substrate 40. The thermally conductive adhesive may be, but is not limited to, a single-component epoxy thermally conductive adhesive, a neutral single-component room temperature moisture-curing silicone rubber, a thermally conductive silicone gel, and the like.

[0155] By adopting the above scheme, when the substrate 40 is a thermal management component 30, and the support platform 50 is thermally connected between the corresponding second battery cell 10b and the substrate 40, and the support platform 50 is separately connected to the substrate 40, the support platform 50 and the substrate 40 can be bonded together by a thermally conductive adhesive to enhance the connection strength, connection tightness and thermal conductivity between the support platform 50 and the substrate 40. That is, the tightness and reliability of the thermal connection between the support platform 50 and the substrate 40 can be enhanced. As a result, it is convenient for the support platform 50 to reliably and effectively exchange heat with the substrate 40, and it is convenient for the support platform 50 to reliably and effectively conduct the heat of the corresponding second battery cell 10b to the substrate 40 (that is, the thermal management component 30 laid on the second side 12 of each battery cell 10), so that the heat exchange effect and heat exchange efficiency of the substrate 40 (that is, the thermal management component 30) on the second battery cell 10b can be optimized, the risk of thermal failure of the second battery cell 10b can be reduced, the use safety of the battery 1 can be optimized, and the service life of the battery 1 can be extended.

[0156] Of course, in other embodiments, the support platform 50 may be thermally connected to the substrate 40 by abutment, integral molding, etc.

[0157] See also Figure 3 , Figure 5 In some embodiments of the present application, the battery 1 includes a box body 20, and the battery cell 10 is accommodated in the box body 20. The substrate 40 is a wall of the box body 20 for supporting the battery cell 10.

[0158] It should be noted that the present embodiment is applicable to situations such as “the support platform 50 is integrally formed on the substrate 40 ”, “the support platform 50 is integrally formed on the frame 222 ”, and “the support platform 50 is independently formed”.

[0159] It should also be noted that the battery 1 may include a box 20, which is used to provide a storage space for the battery cell 10. The box 20 can prevent dust, water and protect the battery cell 10 and other components contained therein, and can reduce the impact of external liquids or other foreign matter on the utility and performance of the battery cell 10 and other components, and can effectively extend the service life of the battery 1. Among them, the box 20 can adopt a variety of structures. The box 20 can be in a variety of shapes, such as a cylinder, a cuboid, etc. The box 20 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0160] In this case, the “wall (e.g., base 221) of the box 20 for supporting the battery cells 10” can be used as the substrate 40. On this basis, if the battery 1 further includes a thermal management component 30, the thermal management component 30 is not laid between the second side 12 of each battery cell 10 and the corresponding wall of the box 20, but is flexibly arranged at other positions, for example, it can be erected between two adjacent battery cells 10.

[0161] By adopting the above scheme, when the battery 1 includes the box body 20, the "wall of the box body 20 used to support the battery cell 10 (such as the base 221)" can be used as the substrate 40. Based on this, on the one hand, the substrate 40 and the wall of the box body 20 can be combined into one, thereby simplifying the structure of the battery 1. On the other hand, the substrate 40 (i.e., the wall of the box body 20 used to support the battery cell 10) can be used as a common support reference for each battery cell 10, and supported between the corresponding second battery cell 10b and the substrate 40 via the support platform 50, thereby compensating for the size difference between the corresponding second battery cell 10b and the first battery cell 10a along the first direction z, thereby facilitating the electrode terminals 13 of each battery cell 10 to establish an electrical connection relationship via the busbar component, and optimizing the assembly quality, assembly efficiency and yield rate of the battery 1.

[0162] Of course, in other embodiments, the substrate 40 may be a newly added individual component.

[0163] See also Figure 4 , Figure 5 In some embodiments of the present application, the first battery cell 10a is a safety battery cell, and the second battery cell 10b is a ternary battery cell.

[0164] It should be noted that the first battery cell 10a is a safety battery cell, which is a battery cell 10 designed to improve safety. The safety battery cell adopts a special design and material to reduce the risk of thermal runaway or explosion of the battery cell 10 under abnormal conditions. The safety battery cell can be a lithium manganese oxide battery, a lithium iron phosphate battery, a lithium iron manganese phosphate battery, etc.

[0165] The second battery cell 10b is a ternary battery cell, which refers to a type of lithium-ion battery whose positive electrode material contains four metal elements, namely lithium, nickel, manganese and cobalt. The ternary battery cell has high energy density, high capacity, high discharge voltage and long cycle life. The ternary battery cell can be a lithium nickel manganese cobalt oxide battery, a lithium nickel cobalt aluminum oxide battery, a lithium cobalt manganese oxide battery, etc.

[0166] By adopting the above scheme, by making the first battery cell 10a a safety battery cell and the second battery cell 10b a ternary battery cell, the battery 1 can have high energy density, high capacity, high discharge voltage, and long cycle life based on the ternary battery cell, and can have high thermal stability and safety based on the safety battery cell, thereby improving the performance and safety of the battery 1. This embodiment is particularly suitable for being combined with the previous embodiment to optimize the layout of the safety battery cell and the ternary battery cell, thereby optimizing the performance of the battery 1.

[0167] Of course, in other embodiments, the first battery cell 10 a and the second battery cell 10 b may be a combination of other types of battery cells 10 , for example, the first battery cell 10 a and the second battery cell 10 b may be a combination of a lithium battery and a sodium battery.

[0168] See also Figure 4 In summary, the present application provides a specific example of a battery 1 according to the above embodiments. The battery 1 includes a battery cell 10 , a substrate 40 and a support platform 50 .

[0169] At least two battery cells 10 are provided. The battery cells 10 have a first side 11 and a second side 12 opposite to each other along a first direction z, and an electrode terminal 13 is provided on the first side 11 of each battery cell 10. Along the first direction z, the battery cell 10 with the largest size is the first battery cell 10a, and the battery cell 10 with a size smaller than the size H1 of the first battery cell 10a is the second battery cell 10b. The first battery cell 10a and the second battery cell 10b are alternately arranged along the second direction x, and the second direction x is perpendicular to the first direction z. The first battery cell 10a is a safety battery cell, and the second battery cell 10b is a ternary battery cell.

[0170] The substrate 40 supports the second side 12 of each battery cell 10. The substrate 40 is a heat management component 30. The heat management component 30 includes a first plate 31 and a second plate 32 arranged in sequence along a first direction z. The first plate 31 and the second plate 32 overlap each other and together enclose a flow channel 33. The flow channel 33 is used to flow a heat exchange fluid. The first plate 31 abuts against and supports the second side 12 of each battery cell 10.

[0171] The first plate 31 is stamped to form a support platform 50 integrally formed on the substrate 40. The flow channel 33 is mainly arranged inside the support platform 50. The support platform 50 is arranged corresponding to the second battery cell 10b. The support platform 50 is supported between the corresponding second battery cell 10b and the substrate 40, and the electrode terminal 13 of the corresponding second battery cell 10b is coplanar with the electrode terminal 13 of the first battery cell 10a.

[0172] Based on the above structure, the substrate 40 can be used as a common support reference for each battery cell 10, so that the substrate 40 is supported on the second side 12 of each battery cell 10; and the first battery cell 10a is used as an alignment reference, and a support platform 50 is added to the second side 12 of each second battery cell 10b, so that the support platform 50 is supported between the corresponding second battery cell 10b and the substrate 40, and the size difference along the first direction z between the corresponding second battery cell 10b and the first battery cell 10a is specifically and adaptively compensated, so that the electrode terminal 13 of the corresponding second battery cell 10b can be coplanar with the electrode terminal 13 of the first battery cell 10a. In this way, the electrode terminals 13 of each battery cell 10 can be made coplanar, so that the electrode terminals 13 of each battery cell 10 can be conveniently connected to each other through the busbar, that is, the electrode terminals 13 of each battery cell 10 can be conveniently connected (for example, welded) with the busbar, so that the assembly quality, assembly efficiency and yield rate of the battery 1 can be optimized.

[0173] Based on the above structure, the "thermal management component 30 laid on the second side 12 of each battery cell 10" can be used as the substrate 40, and the first plate 31 of the thermal management component 30 abutting the second side 12 of each battery cell 10 can be stamped to form an integral support platform 50 protruding toward the corresponding second battery cell 10b on the first plate 31. Based on this, on the one hand, the substrate 40, the support platform 50 and the thermal management component 30 can be combined into a whole, thereby improving the processing convenience, processing efficiency and processing accuracy of the substrate 40 and the support platform 50, simplifying the assembly process, improving the assembly convenience and assembly efficiency, and simplifying the structure of the battery 1. On the one hand, the structural stability and rigidity of the thermal management component 30 formed by the support platform 50 and the substrate 40 can be enhanced, the layout of the support platform 50 can be stabilized, and the thermal management component 30 can be conveniently formed with alternately arranged recesses 60 and protrusions, so that each first battery cell 10a can be conveniently installed in each recess 60 quickly and accurately, and each second battery cell 10b can be conveniently installed in a positioning manner quickly and accurately on each support platform 50, so that the electrode terminals 13 of each battery cell 10 can be conveniently and reliably made coplanar, and the assembly quality, assembly efficiency and yield rate of the battery 1 can be improved. On the one hand, the heat exchange area between the thermal management component 30 formed by the support platform 50 and the substrate 40 and each battery cell 10 can be increased, so that the thermal management component 30 formed by the support platform 50 and the substrate 40 and each battery cell 10 can be conveniently reliable heat exchanged, so that the heat exchange effect and heat exchange efficiency of the thermal management component 30 formed by the support platform 50 and the substrate 40 on each battery cell 10 can be optimized.

[0174] Based on the above structure, the flow channel 33 can be arranged using the existing space of the support platform 50, thereby improving the space utilization of the battery 1 and optimizing the energy density of the battery 1. In addition, since the first battery cells 10a and the second battery cells 10b are alternately arranged along the second direction x, the heat exchange fluid can flow through the flow channel 33 to perform heat exchange with the corresponding second battery cell 10b and the first battery cell 10a arranged next to it, thereby optimizing the heat exchange effect and heat exchange efficiency of the thermal management component 30 formed by the support platform 50 and the substrate 40 on each battery cell 10.

[0175] Based on the above structure, the number of the first battery cells 10a and the number of the second battery cells 10b can be balanced, and the layout of the first battery cells 10a and the second battery cells 10b can be optimized, so that the battery 1 can balance the advantages of the first battery cells 10a and the second battery cells 10b, so that the battery 1 can have high energy density, high capacity, high discharge voltage, and long cycle life based on the ternary battery cells, and can have high thermal stability and safety based on the safety battery cells, so that the performance of the battery 1 can be optimized, and the performance and safety of the battery 1 can be improved.

[0176] See also Figure 6 , Figure 7 In summary, the present application provides another specific example of a battery 1 based on the above embodiments. The battery 1 includes a battery cell 10 , a substrate 40 , a support platform 50 and a box 20 .

[0177] The box body 20 includes a base 221 and a frame 222. The base 221 is a structure for supporting components such as the battery cell 10. The frame 222 is erected on the base 221. In other words, the base 221 covers a side opening of the frame 222. The frame 222 is fixedly connected to the base 221. The frame 222 includes at least three side beams 2221 arranged around the edge of the base 221, and each side beam 2221 is connected end to end in sequence. The frame 222 also includes a middle beam 2222 connected between two side beams 2221. The middle beam 2222 can be used to enhance the structural strength and divide the space enclosed by each side beam 2221 into at least two spaces.

[0178] The battery cell 10 is contained in the box body 20. There are at least two battery cells 10. The battery cell 10 has a first side 11 and a second side 12 opposite to each other along the first direction z, and the first side 11 of each battery cell 10 is provided with an electrode terminal 13. Along the first direction z, the battery cell 10 with the largest size is the first battery cell 10a, and the battery cell 10 with a size smaller than the first battery cell 10a is the second battery cell 10b. The second battery cell 10b is arranged close to one of the side beams 2221.

[0179] The battery cells 10 arranged side by side along the second direction x together form a battery unit 100 . A second battery core 10 b is provided at one end side of the battery unit 100 along the second direction x, and the other battery cells 10 of the battery unit 100 are first battery cores 10 a .

[0180] The substrate 40 supports the second side 12 of each battery cell 10 . The substrate 40 is the heat management component 30 . The substrate 40 is located between the base 221 of the box body 20 and the second side 12 of each battery cell 10 .

[0181] The support platform 50 is arranged corresponding to the second battery cell 10b. The support platform 50 is integrally formed with the side beam 2221 of the frame 222. The support platform 50 is supported between the corresponding second battery cell 10b and the substrate 40, and the electrode terminal 13 of the corresponding second battery cell 10b is coplanar with the electrode terminal 13 of the first battery cell 10a. The support platform 50 is also insulated and thermally connected between the corresponding second battery cell 10b and the substrate 40. The support platform 50 is thermally connected to the corresponding second battery cell 10b through thermally conductive adhesive. The support platform 50 is thermally connected to the substrate 40 through thermally conductive adhesive.

[0182] Based on the above structure, the second battery cell 10b can be arranged at the end side of the battery unit 100 along the second direction x, so that the second battery cell 10b is arranged close to the side beam 2221 of the frame 222. Based on this, it is convenient to form the support platform 50 during the process of forming the side beam 2221 of the frame 222, so that the positioning step and the assembly step of the support platform 50 can be omitted, and it is convenient to quickly and accurately realize the positioning and installation of the second battery cell 10b to the support platform 50, and it is convenient to quickly and accurately realize the side-by-side arrangement of the first battery cell 10a in the box 20, so that the assembly quality and assembly efficiency of the battery unit 100 can be improved, and the assembly quality, assembly efficiency and yield rate of the battery 1 can be improved. In addition, the connection reliability, connection tightness, connection stability and connection strength between the support platform 50 and the frame 222 can be enhanced, the stability and rigidity of the overall structure of the support platform 50 and the frame 222 can be enhanced, and the risk of looseness at the connection between the support platform 50 and the frame 222 can be reduced, so that the structural reliability of the battery 1 can be improved.

[0183] Based on the above structure, the substrate 40 can be used as a common support reference for each battery cell 10, so that the substrate 40 is supported on the second side 12 of each battery cell 10; and the first battery cell 10a is used as an alignment reference, and is supported between the corresponding second battery cell 10b and the substrate 40 through the support platform 50, so as to specifically and adaptively compensate for the size difference along the first direction z between the corresponding second battery cell 10b and the first battery cell 10a, so that the electrode terminal 13 of the corresponding second battery cell 10b can be coplanar with the electrode terminal 13 of the first battery cell 10a. In this way, the electrode terminals 13 of each battery cell 10 can be made coplanar, so that the electrode terminals 13 of each battery cell 10 can be conveniently connected to each other through the busbar, that is, the electrode terminals 13 of each battery cell 10 can be conveniently connected (for example, welded) with the busbar, so as to optimize the assembly quality, assembly efficiency and yield rate of the battery 1.

[0184] Based on the above structure, the "thermal management component 30 laid on the second side 12 of each battery cell 10" can be used as the substrate 40, so that the substrate 40 has the utility of "serving as a common support reference for each battery cell 10" and the utility of "exchanging heat with each battery cell 10". Correspondingly, the support platform 50 can have the utility of "compensating for the size difference of the corresponding second battery cell 10b along the first direction z" and the utility of "heat exchanging and conducting heat of the corresponding second battery cell 10b to the substrate 40". Based on this, on the one hand, the substrate 40 and the thermal management component 30 can be combined into one, the performance and function of the substrate 40 can be optimized, the performance and function of the support platform 50 can be optimized, and the structure of the battery 1 can be simplified. On the one hand, direct heat exchange can be carried out with the first battery cell 10a via the substrate 40, and heat exchange and heat conduction can be carried out between the corresponding second battery cell 10b and the substrate 40 via the support platform 50, thereby facilitating reliable heat exchange of each battery cell 10, and especially facilitating heat dissipation of each battery cell 10, thereby reducing the risk of thermal failure of each battery cell 10, optimizing the safety of battery 1, and extending the service life of battery 1.

[0185] See also Fig. 9 In summary, the present application provides another specific example of a battery 1 based on the above embodiments. The battery 1 includes a battery cell 10 , a substrate 40 , a support platform 50 and a box 20 .

[0186] The housing 20 includes a base 221 and a frame 222. The base 221 is a structure for supporting components such as the battery cell 10. The frame 222 is erected on the base 221. In other words, the base 221 covers an opening on one side of the frame 222. The frame 222 is fixedly connected to the base 221.

[0187] The battery cell 10 is accommodated in the box body 20. There are at least two battery cells 10. The battery cell 10 has a first side 11 and a second side 12 opposite to each other along the first direction z, and the first side 11 of each battery cell 10 is provided with an electrode terminal 13. Along the first direction z, the battery cell 10 with the largest size is a first battery cell 10a, and the battery cell 10 with a size smaller than the first battery cell 10a is a second battery cell 10b.

[0188] The substrate 40 supports the second side 12 of each battery cell 10 . The substrate 40 is the heat management component 30 . The substrate 40 is located between the base 221 of the box body 20 and the second side 12 of each battery cell 10 .

[0189] The support platform 50 is independently formed, and the support platform 50 is arranged corresponding to the second battery cell 10b. The support platform 50 is supported between the corresponding second battery cell 10b and the substrate 40, and the electrode terminal 13 of the corresponding second battery cell 10b is coplanar with the electrode terminal 13 of the first battery cell 10a. The support platform 50 is also insulated and thermally connected between the corresponding second battery cell 10b and the substrate 40. The support platform 50 is thermally connected to the corresponding second battery cell 10b through a thermally conductive adhesive. The support platform 50 is thermally connected to the substrate 40 through a thermally conductive adhesive.

[0190] Based on the above structure, the substrate 40 can be used as a common support reference for each battery cell 10, so that the substrate 40 is supported on the second side 12 of each battery cell 10; and the first battery cell 10a is used as an alignment reference, and a support platform 50 is added to the second side 12 of each second battery cell 10b, so that the support platform 50 is supported between the corresponding second battery cell 10b and the substrate 40, and the size difference along the first direction z between the corresponding second battery cell 10b and the first battery cell 10a is specifically and adaptively compensated, so that the electrode terminal 13 of the corresponding second battery cell 10b can be coplanar with the electrode terminal 13 of the first battery cell 10a. In this way, the electrode terminals 13 of each battery cell 10 can be made coplanar, so that the electrode terminals 13 of each battery cell 10 can be conveniently connected to each other through the busbar, that is, the electrode terminals 13 of each battery cell 10 can be conveniently connected (for example, welded) with the busbar, so that the assembly quality, assembly efficiency and yield rate of the battery 1 can be optimized.

[0191] Based on the above structure, the "thermal management component 30 laid on the second side 12 of each battery cell 10" can be used as the substrate 40, so that the substrate 40 has the utility of "serving as a common support reference for each battery cell 10" and the utility of "exchanging heat with each battery cell 10". Correspondingly, the support platform 50 can have the utility of "compensating for the size difference of the corresponding second battery cell 10b along the first direction z" and the utility of "heat exchanging and conducting heat of the corresponding second battery cell 10b to the substrate 40". Based on this, on the one hand, the substrate 40 and the thermal management component 30 can be combined into one, the performance and function of the substrate 40 can be optimized, the performance and function of the support platform 50 can be optimized, and the structure of the battery 1 can be simplified. On the one hand, direct heat exchange can be carried out with the first battery cell 10a via the substrate 40, and heat exchange and heat conduction can be carried out between the corresponding second battery cell 10b and the substrate 40 via the support platform 50, thereby facilitating reliable heat exchange of each battery cell 10, and especially facilitating heat dissipation of each battery cell 10, thereby reducing the risk of thermal failure of each battery cell 10, optimizing the safety of battery 1, and extending the service life of battery 1.

[0192] Based on the above structure, the layout of each battery cell 10 on the substrate 40 can be adjusted flexibly and as needed, and the layout of each support platform 50 can be adjusted flexibly and as needed according to the layout of each battery cell 10, especially according to the layout of each second battery cell 10b. Based on this, the assembly flexibility and structural diversity of the battery 1 can be improved on the basis of the substrate 40 and each support platform 50 jointly promoting the coplanarity of the electrode terminals 13 of each battery cell 10.

[0193] See also Figure 1 Some embodiments of the present application provide an electrical device, which includes a battery 1 provided in an embodiment of the present application.

[0194] By adopting the above solution, the electrical device can optimize the assembly quality, assembly efficiency and yield rate of the electrical device by applying the battery 1 provided in the embodiment of the present application.

[0195] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: The battery comprises: At least two battery cells are provided, wherein the battery cells have a first side and a second side opposite to each other along a first direction, and the first side of each battery cell is provided with an electrode terminal; along the first direction, the battery cell with the largest size is a first battery cell, and the battery cell with a size smaller than that of the first battery cell is a second battery cell; a substrate supporting the second side of each of the battery cells; A support platform is provided corresponding to the second battery core, and the support platform is supported between the corresponding second battery core and the substrate.

2. The battery according to claim 1, characterized in that Along the first direction, a difference between a total size of the support platform and the corresponding second battery cell and a size of the first battery cell is configured to be smaller than a size difference between the first battery cell and the corresponding second battery cell.

3. The battery according to claim 1, characterized in that The electrode terminals of the battery cells are coplanar.

4. The battery according to claim 1, characterized in that A flow channel is provided in the support platform, and the flow channel is used for allowing heat exchange fluid to flow therein.

5. The battery according to claim 1, characterized in that The support platform is integrally formed on the base plate.

6. The battery according to claim 5, characterized in that The substrate is a thermal management component; the thermal management component includes a first plate and a second plate arranged in sequence along the first direction, the first plate and the second plate overlap each other and together form a flow channel; the first plate abuts the second side of each battery cell, and the first plate is stamped to form the support platform.

7. The battery according to claim 1, characterized in that The battery comprises a box body, and the battery monomer is accommodated in the box body; the box body comprises a base and a frame, and the frame is erected on the base; The support platform is integrally formed with the frame.

8. The battery according to claim 7, characterized in that The frame and the support platform are both provided with flow channels inside, and the flow channels are used for allowing heat exchange fluid to flow therein.

9. The battery according to claim 1, characterized in that The support platform is independently formed.

10. The battery according to claim 1, characterized in that The first battery cells and the second battery cells are alternately arranged along a second direction, and the second direction is perpendicular to the first direction.

11. The battery according to claim 1, characterized in that The battery cells arranged side by side along a second direction together form a battery unit, and the second battery core is arranged at an end side of the battery unit along the second direction, and the second direction is perpendicular to the first direction.

12. The battery according to any one of claims 1 to 11, characterized in that The substrate is a heat management component, and the support platform is thermally connected between the corresponding second battery core and the substrate.

13. The battery according to claim 12, characterized in that The support platform is thermally connected to the corresponding second battery core through a thermally conductive adhesive; And / or, the support platform is thermally connected to the substrate via a thermally conductive adhesive.

14. The battery according to any one of claims 1 to 5 and 7 to 11, characterized in that: The base plate is a wall of a box body for supporting the battery cells.

15. The battery according to any one of claims 1 to 11, characterized in that The first battery cell is a safety battery cell, and the second battery cell is a ternary battery cell.

16. An electrical device, characterized in that: The electrical device comprises a battery as claimed in any one of claims 1 to 15.

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