Battery, electrical device, and method for forming a battery

Abstract

An embodiment of the present application provides a battery, an electrical device, and a forming method of the battery. The battery includes a box body, a battery pack, a bus bar, and two output members. More than two battery packs are arranged along a first direction. Each battery pack includes an even number of battery cells arranged along a second direction perpendicular to the first direction. The battery cell includes a first side wall and a second side wall connected to each other. The first side wall is the wall with the largest area among all the outer walls of the battery cell. The second side walls of two adjacent battery cells are arranged opposite to each other along the second direction. The bus bar is electrically connected to two adjacent battery cells. The two output members are arranged on the same side in the first direction. The battery pack located on the outermost side along the first direction is provided with two output terminals. The two output terminals are distributed along the second direction and are respectively electrically connected to the two output terminals to jointly form a power supply path with the bus bar. The embodiment of the present application can improve the overall integration and energy density of the battery, and is conducive to processing and assembly, reducing weight and cost.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more specifically, to a battery, an electrical device, and a forming method of the battery. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] In the existing battery manufacturing process, the output member connecting the total output end of the battery pack is usually arranged in a form spanning the entire battery, resulting in problems of increased weight and cost. Summary of the Invention

[0004] The present application provides a battery, an electrical device, and a forming method of the battery. The battery can avoid arranging the output member in a form spanning the entire battery, reducing weight and cost.

[0005] In a first aspect, an embodiment of the present application provides a battery, including a box body, a battery pack, a bus bar, and two output members. The battery pack is arranged in the box body, and the number of battery packs is two or more and arranged along a first direction. Each battery pack includes an even number of battery cells arranged along a second direction, the second direction being perpendicular to the first direction. The battery cell includes a connected first side wall and a second side wall, the first side wall being the wall with the largest area among all the outer walls of the battery cell, the first direction being perpendicular to the first side wall, and the second side walls of two adjacent battery cells being arranged opposite to each other along the second direction; the bus bar is used for electrically connecting two adjacent battery cells; the two output members are arranged on the same side in the first direction; wherein, the battery pack located on the outermost side along the first direction is provided with two output terminals, the two output terminals being distributed along the second direction, and the two output members are respectively electrically connected to the two output terminals to jointly form a power supply path with the bus bar.

[0006] In the embodiment of the present application, the two output members and the two output terminals of the battery face the same side, which can simplify the connection structure, improve the space utilization rate inside the box body, facilitate processing and assembly. At the same time, it can avoid forming a power supply path by using a long output member spanning the battery pack, which is beneficial to reducing weight and cost and improving the integration and energy density of the battery.

[0007] In the embodiment of the present application, the bus bar includes a plurality of first bus bars and a plurality of second bus bars. The first bus bar is used for electrically connecting two adjacent battery cells along the first direction, and the second bus bar is used for electrically connecting two adjacent battery cells along the second direction.

[0008] By setting in this way, the busbar can be assembled regularly, improving the assembly efficiency. Moreover, it can ensure the effectiveness of forming two output terminals on the outermost battery pack in the first direction, thereby ensuring that the two output components are arranged on the same side in the first direction, so as to improve the space utilization rate inside the box, facilitate weight and cost reduction, and improve the integration and energy density of the battery.

[0009] In some embodiments, the second busbar is used to electrically connect two adjacent battery cells in the outermost battery pack along the first direction.

[0010] By setting in this way, it can enable the outermost battery pack along the first direction to form two output terminals, thus ensuring the effectiveness of arranging the two output components on the same side in the first direction.

[0011] In some embodiments, the two output terminals are respectively arranged on two battery cells located at the ends in the second direction in the outermost battery pack, which is conducive to reducing the layout length of the two output components, thereby reducing weight and cost, and improving the integration and energy density of the battery.

[0012] In some embodiments, the battery further includes a limiting member, which is fixedly connected inside the box and abuts against the first side wall of the battery cell. The limiting member is used to limit the deformation of the battery cell in the first direction.

[0013] In the embodiments of the present application, the limiting member can provide positioning for the battery cell, which is conducive to the installation efficiency and installation accuracy, thus ensuring that the battery has good quality. Moreover, the limiting member can limit the deformation of the battery cell in the first direction, which is conducive to buffering the expansion of the battery cell and ensuring the safety performance of the battery.

[0014] In some embodiments, the battery cell further includes an output component base, which is arranged on the limiting member and used to support the output component.

[0015] By setting in this way, the output component and the output component base form an output interface to connect with an external electrical device, which facilitates the installation and fixation of the output component and can also avoid contact short circuit, ensuring the safety performance of the battery.

[0016] In some embodiments, the limiting member extends along the second direction and is connected to the box at both ends in the second direction, which can improve the overall structural strength of the box, enhance the ability to resist the expansion of the battery cell, and ensure the safety performance.

[0017] In some embodiments, the limiting member abuts against the first side wall of the battery cell in the outermost battery pack, which can provide positioning for the battery pack, conducive to the installation efficiency and installation accuracy, thus ensuring that the battery has good quality.

[0018] In some embodiments, a plurality of cavities penetrating along the second direction are arranged inside the limiting member.

[0019] With this setting, the space inside the cavity is conducive to being compressed in the first direction so that the limiting member can limit the deformation of the battery cell, buffer and absorb the expansion force of the battery cell, thereby ensuring the safety performance of the battery cell. Moreover, the setting of the cavity can also reduce the weight of the limiting member, lower the cost, achieve lightweight design, and at the same time improve the overall energy density of the battery.

[0020] In some embodiments, along the first direction, a partition portion is provided between two adjacent battery groups, and the partition portion abuts against the first side walls of the battery cells in the two adjacent battery groups.

[0021] With this setting, the partition portion can be used as a structural member of the box body. By clamping the partition portion between two adjacent battery groups and connecting it to the first side walls of the battery cells, the partition portion can better play the role of at least one of improving the structural strength and resisting the expansion force.

[0022] In some embodiments, the partition portion is adhesively fixed to the first side walls of the battery cells in the two adjacent battery groups.

[0023] With this setting, it is conducive to improving the connection strength and connection stability between the partition portion and the battery cell, thereby ensuring the safety and reliability of the battery. Moreover, by connecting the partition portion and each battery cell integrally by means of adhesion, the partition portion and the battery cells of the battery group can be bonded into one body and then integrally installed into the box body, which is conducive to the assembly of the battery into a group, and can also make the adjacent battery groups arranged more compactly, so as to improve the utilization efficiency of the box body space.

[0024] In some embodiments, the partition portion is used to adjust the temperature of the battery cell, and a medium flow channel is provided inside the partition portion.

[0025] With the above setting, the partition portion can not only perform thermal management on the battery cell, but also, as a structural member of the box body, improve the overall structural strength of the battery, thereby eliminating the transverse and longitudinal beams arranged inside the box body, with high integration, low cost, high utilization rate of the box body space, and achieving lightweight design.

[0026] In some embodiments, the battery further includes a connection channel, an inlet pipe, and an outlet pipe. The medium flow channels of the partition portions are communicated through the connection channel, and the inlet pipe and the outlet pipe are communicated with the medium flow channel of the same partition portion.

[0027] With this setting, each partition portion can meet the demand for the heat exchange medium only through one inlet pipe and one outlet pipe, reducing the space occupancy rate, and can simplify the structures of the inlet pipe and the outlet pipe, which is conducive to assembly and replacement, and can be applied to the heat exchange medium supply of different numbers of partition portions, improving flexibility and versatility.

[0028] In some embodiments, the box body includes a top cover, a bottom cover, and a receiving frame. The bottom cover and the top cover are oppositely arranged at both ends of the receiving frame in the height direction of the box body, and the limiting members are respectively connected to at least one of the receiving frame, the top cover, and the bottom cover.

[0029] By setting in this way, it is beneficial to processing, manufacturing, and assembly, and further improves the structural strength.

[0030] In some embodiments, the box body further includes a connecting seat, which protrudes from the receiving frame along the second direction, and the connecting seat is used to mount the battery on the electrical device.

[0031] By providing the connecting seat, it is beneficial to the connection and fixation of the overall battery in the electrical device to which it is applied, and ensures the safety performance of the battery.

[0032] In some embodiments, the battery cell includes electrode terminals. Along the height direction, the surface of the battery cell facing away from the electrode terminals is connected to the top cover or the bottom cover.

[0033] By setting in this way, during battery manufacturing, the battery cell can be placed upright or inverted in the box body, which can improve the selectivity of battery manufacturing and forming.

[0034] In a second aspect, an embodiment of the present application provides an electrical device, including the battery in any of the foregoing embodiments, enabling the electrical device to operate normally.

[0035] In a third aspect, an embodiment of the present application provides a method for forming a battery, including: providing an even number of battery cells, where the battery cell includes a first side wall and a second side wall, and the first side wall is the wall with the largest area among all the outer walls of the battery cell; grouping a plurality of battery cells, with each group including an even number of battery cells, and arranging the second side walls of the battery cells in the same group opposite to each other to form two or more battery groups; stacking two or more battery groups and placing them as a whole in the box body; electrically connecting the battery cells of each battery group through a bus bar; providing two output members, setting the two output members on the same side in the first direction, and electrically connecting the two output members to two output terminals arranged on the battery group located on the outermost side in the first direction, and the two output terminals are distributed in the second direction to jointly form a power supply path with the bus bar.

[0036] In the embodiment of the present application, for the battery manufactured by this forming method, it is beneficial to processing and assembly, can avoid forming a power supply path by using a long output member spanning across the battery group, is beneficial to reducing weight and cost, and improving the integration and energy density of the battery. Description of the Drawings

[0037] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments of the present application. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the drawings.

[0038] Figure 1 Schematic structural diagram of a vehicle provided by an embodiment of the present application;

[0039] Figure 2 Explosion schematic diagram of a battery cell provided by an embodiment of the present application;

[0040] Figure 3 Explosion schematic diagram of a battery provided by an embodiment of the present application;

[0041] Figure 4 Partial top view of a battery provided by an embodiment of the present application;

[0042] Figure 5 Partial top view of a battery provided by another embodiment of the present application;

[0043] Figure 6 Partial top view of a battery provided by yet another embodiment of the present application;

[0044] Figure 7 Partial explosion schematic diagram of a battery provided by an embodiment of the present application;

[0045] Figure 8 Partial explosion schematic diagram of a battery provided by another embodiment of the present application;

[0046] Figure 9 Flow schematic diagram of a battery forming method provided by an embodiment of the present application.

[0047] In the drawings, the drawings are not drawn to actual scale.

[0048] In the drawings:

[0049] 1000 - vehicle; 100 - battery; 200 - controller; 300 - motor;

[0050] 10 - box body; 10a - opening; 11 - top cover; 12 - bottom cover; 13 - receiving frame; 14 - connecting seat;

[0051] 20 - battery pack; 21 - battery cell; 211 - first side wall; 212 - second side wall; 201 - end cover assembly; 201a - electrode terminal; 202 - housing; 203 - electrode assembly; 203a - positive electrode tab; 203b - negative electrode tab;

[0052] 30 - Bus bar; 31 - First bus bar; 32 - Second bus bar; 40 - Output part; 50 - Limiting part; 51 - Accommodating groove; 60 - Output part base;

[0053] 70 - Partition part; 71 - Connecting channel; 72 - Inlet pipe; 73 - Outlet pipe;

[0054] X - First direction; Y - Second direction; Z - Height direction. Detailed implementation manner

[0055] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and thus are only examples and cannot be used to limit the protection scope of the present application.

[0056] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be the ordinary meanings understood by those skilled in the art to which the embodiments of the present application belong.

[0057] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present application.

[0058] In addition, the technical terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise clearly and specifically defined.

[0059] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0060] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0061] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0062] The applicant noted that existing batteries typically contain multiple battery cells, requiring multiple connecting tabs for electrical connection between the cells, and a longer connecting tab to form the overall output terminal. However, this arrangement complicates the arrangement of the connecting tabs within the battery, hinders processing and assembly, and increases weight and cost.

[0063] In order to improve the overall integration and energy density of the battery, facilitate processing and assembly, and reduce weight and cost, the applicant has discovered that the structure and layout of the battery can be improved.

[0064] Based on the above considerations, in order to improve the overall integration and energy density of the battery, and to facilitate processing and assembly, reduce weight and cost, the applicant has designed a battery after in-depth research, including a housing, a battery pack, a busbar, and two output members. The battery pack is arranged in the housing, the number of battery packs is more than two and arranged along a first direction, each battery pack includes an even number of battery cells arranged along a second direction, the second direction is perpendicular to the first direction, the battery cells include a first side wall and a second side wall connected to each other, the first side wall is the wall with the largest area among all the outer walls of the battery cells, the first direction is perpendicular to the first side wall, and the second side walls of two adjacent battery cells are arranged oppositely along the second direction; the busbar is used to electrically connect two adjacent battery cells; the two output members are arranged on the same side of the first direction; wherein the battery pack located on the outermost side along the first direction is provided with two output terminals, the two output terminals are distributed along the second direction, and the two output members are respectively electrically connected to the two output terminals to form a power supply path together with the busbar.

[0065] In such a battery, the battery pack is disposed within the box to meet the sealing requirements. The busbar is used to electrically connect two adjacent battery cells. The battery pack located on the outermost side in the first direction is provided with two output terminals. The two output members are disposed on the same side in the first direction, and the two output members are respectively electrically connected to the two output terminals to jointly form a power supply path with the busbar, such that the two output members and the two output terminals face the same side, which can simplify the connection structure, improve the space utilization rate within the box, facilitate processing and assembly. At the same time, it can avoid forming a power supply path by using a relatively long output member spanning across the battery pack, which is beneficial to reducing weight and cost and improving the compactness and energy density of the battery cells.

[0066] The technical solutions described in the embodiments of the present application are applicable to power-consuming devices using batteries.

[0067] The power-consuming device can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, a hammer drill, an impact drill, a concrete vibrator, an electric planer, etc. The embodiments of the present application do not impose special restrictions on the above-mentioned power-consuming devices.

[0068] It should be understood that the technical solutions described in the embodiments of the present application are not only limited to the above-described power-consuming devices, but also applicable to all power-consuming devices including the use of batteries. However, for the sake of simplicity of description, the following embodiments will be described by taking an electric vehicle as an example.

[0069] Please refer to Figure 1 , Figure 1 FIG. 16 is a schematic structural diagram of a vehicle 1000 provided by some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or an extended-range electric vehicle, etc. A battery 100 is disposed inside the vehicle 1000. The battery 100 can be disposed at the bottom, head, or tail of the vehicle 1000. The battery 100 can be used to supply power to the vehicle 1000. For example, the battery 100 can be used as the operating power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 10 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0070] In some embodiments of the present application, the battery 100 can not only serve as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0071] Please refer to Figure 2 and Figure 3 , embodiments of the present application provide a battery 100, including a box body 10, a battery pack 20, a bus bar 30, and two output components 40. The battery pack 20 is disposed in the box body 10, and the number of the battery packs 20 is more than two and arranged along a first direction X. Each battery pack 20 includes an even number of battery cells 21 arranged along a second direction Y perpendicular to the first direction X. The battery cell 21 includes a connected first side wall 211 and a second side wall 212. The first side wall 211 is the wall with the largest area among all the outer walls of the battery cell 21. The first direction X is perpendicular to the first side wall 211. The second side walls 212 of two adjacent battery cells 21 are arranged opposite to each other along the second direction Y. The bus bar 30 is used to electrically connect two adjacent battery cells 21. The two output components 40 are disposed on the same side of the first direction X. The battery pack 21 located on the outermost side along the first direction X is provided with two output terminals, and the two output terminals are distributed along the second direction Y. The two output components 40 are respectively electrically connected to the two output terminals to jointly form a power supply path with the bus bar 30.

[0072] In the embodiments of the present application, the second direction Y is perpendicular to the first direction X. Optionally, the first direction X can be the length direction of the box body 10. Correspondingly, the second direction Y is the width direction of the box body 10. Of course, the first direction X can also be the width direction of the box body 10. Correspondingly, the second direction Y is the length direction of the box body 10.

[0073] The box body 10 can be a simple three-dimensional structure such as a single cuboid or cylinder, or a complex three-dimensional structure composed of a combination of simple three-dimensional structures such as a cuboid or cylinder. The embodiments of the present application do not limit this. The material of the box body 10 can be alloy materials such as aluminum alloy and ferroalloy, or polymer materials such as polycarbonate and polyisocyanurate foam plastic, or composite materials such as glass fiber reinforced epoxy resin. The embodiments of the present application do not limit this either.

[0074] The box body 10 is used to accommodate the battery cells 21. The box body 10 can be of various structures, and only the sealing requirements need to be ensured.

[0075] In the battery 100, there are two or more battery packs 20 arranged along a first direction X. Each battery pack 20 includes an even number of battery cells 21 arranged along a second direction Y. The number of battery cells 21 can be two, four, six, eight, ten, or more, as long as the number of battery cells 21 is an even number. If there are multiple battery cells 21, the battery pack 20 can be connected in series, parallel, or in a mixed manner along the second direction Y. The multiple battery packs 20 are then connected in series, parallel, or in a mixed manner along the first direction X to form a single unit and are housed within the housing 10. Mixed means that the battery cells 21 are connected both in series and in parallel.

[0076] In the present application, the battery cell 21 may include a lithium-ion battery cell 21, a sodium-ion battery cell 21, or a magnesium-ion battery cell 21, etc., and the embodiments of the present application are not limited to this. The battery cell 21 may be flat, rectangular, or in other shapes, and the embodiments of the present application are not limited to this. The battery cell 21 is generally divided into three types according to the packaging method: cylindrical battery cells 21, square battery cells 21, and soft-pack battery cells 21, and the embodiments of the present application are not limited to this. However, for the sake of simplicity, the following embodiments are all described using the square battery cell 21 as an example.

[0077] See also Figure 2 The battery cell 21 refers to the smallest unit that constitutes the battery 100 . The battery cell 21 includes an end cap assembly 201 , a shell 202 and an electrode assembly 203 .

[0078] The end cap assembly 201 refers to a component that covers the opening of the shell 202 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the end cap assembly 201 can be adapted to the shape of the shell 202 to match the shell 202. Optionally, the end cap 201 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap assembly 201 is not easily deformed when squeezed or collided, so that the battery cell 21 can have a higher structural strength and improved safety performance. Functional components such as electrode terminals 201a can be provided on the end cap assembly 201. The electrode terminal 201a can be used to electrically connect to the electrode assembly 203 for outputting or inputting electrical energy of the battery cell 21. In some embodiments, the end cap assembly 201 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. The end cap assembly 201 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic, and this is not particularly limited in the present embodiment. In some embodiments, an insulating member can be disposed inside the end cap assembly 201 to isolate the electrical connection components within the housing 202 from the end cap assembly 201, thereby reducing the risk of short circuits. Exemplary materials include plastic, rubber, and the like.

[0079] The housing 202 is a component for cooperating with the end cap assembly 201 to form the internal environment of the battery cell 21. Among them, the formed internal environment can be used to accommodate the electrode assembly 203, the electrolyte (not shown in the figure), and other components. The housing 202 and the end cap assembly 201 can be independent components. An opening can be provided on the housing 202, and the end cap assembly 201 is covered at the opening to form the internal environment of the battery cell 21. Without limitation, the end cap assembly 201 and the housing 202 can also be integrated. Specifically, the end cap assembly 201 and the housing 202 can first form a common connection surface before other components are put into the housing. When it is necessary to encapsulate the interior of the housing 202, the end cap assembly 201 is then covered on the housing 202. The housing 202 can be of various shapes and sizes, such as a cuboid. Specifically, the shape of the housing 202 can be determined according to the specific shape and size of the electrode assembly 203. The material of the housing 202 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special restrictions on this.

[0080] The electrode assembly 203 is a component in the battery cell 21 where an electrochemical reaction occurs. The housing 202 can contain one or more electrode assemblies 203. The electrode assembly 203 is mainly formed by winding or laminating a positive electrode sheet and a negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active substances constitute the main body of the electrode assembly 203, and the parts of the positive electrode sheet and the negative electrode sheet without active substances respectively constitute the electrode tabs. The positive electrode tab 203a and the negative electrode tab 203b can be located at one end of the main body together or at both ends of the main body respectively. During the charging and discharging process of the battery 100, the positive electrode active substance and the negative electrode active substance react with the electrolyte, and the electrode tabs are connected to the electrode terminals 201a to form a current loop.

[0081] Please continue to refer to Figure 3 , the battery 100 provided by the embodiments of the present application further includes a bus bar 30 and two output members 40. Among them, the bus bar 30 is used to electrically connect two adjacent battery cells 21. The two output members 40 are arranged on the same side in the first direction X. The battery pack 20 located on the outermost side along the first direction X is provided with two output terminals, and the two output terminals are distributed in the second direction Y. The two output members 40 are respectively electrically connected to the two output terminals to jointly form a power supply path with the bus bar 30.

[0082] By setting in this way, the two output members 40 and the two output terminals of the battery 100 face the same side, which can simplify the connection structure, improve the space utilization rate in the box body 10, facilitate processing and assembly. At the same time, it can avoid forming a power supply path by using a relatively long output member 40 spanning across the battery pack 20, which is beneficial to reducing weight and cost, and improving the compactness and energy density of the battery cell 21.

[0083] Optionally, two adjacent battery cells 21 can be electrically connected through a busbar 30. Optionally, the busbar 30 can be connected to the electrode terminals 201a on the adjacent battery cells 21 to achieve series connection, parallel connection or mixed connection of multiple battery cells 21 in the same battery pack 20 or in two adjacent battery packs 20.

[0084] The battery pack 20 located at the outermost side along the first direction X is provided with two output terminals to ensure that the two output components 40 can be arranged on the same side in the first direction, thereby simplifying the structure and improving the space utilization in the box 10 .

[0085] Optionally, the busbar 30 may be made of any material such as aluminum, copper or iron.

[0086] Optionally, the output member 40 may be made of any material such as aluminum, copper or iron.

[0087] Optionally, the output member 40 may be integrally formed by a stamping process, or may be integrally formed by casting.

[0088] The two output ends are distributed along the second direction Y, so that the two output elements 40 are spaced apart in the second direction Y, avoiding safety issues such as contact between adjacent output elements 40 and short circuit, thereby ensuring the safety performance of the battery 100.

[0089] Each battery pack 20 includes an even number of battery cells 21. Figure 5 As shown, each battery pack 20 includes four battery cells 21. Figure 4 As shown, it can also be set to 6, such as Figure 6 As shown, it can also be set to 8.

[0090] By configuring in this manner, after the busbar 30 electrically connects two adjacent battery cells 21, it is possible to ensure that the two output terminals are formed on the outermost battery pack 20 in the first direction X and distributed along the second direction Y, thereby ensuring that the two output components 40 are arranged on the same side in the first direction X. This avoids the use of a longer output component 40 spanning the battery pack 20 to form a power supply path, which helps reduce weight and cost and improve the compactness and energy density of the battery cells 21.

[0091] The battery 100 provided by the embodiment of the present application simplifies the connection structure, improves the space utilization rate inside the box 10, and facilitates processing and assembly by arranging two output members 40 and electrically connecting them to two output terminals respectively. The two output terminals are located in the outermost battery packs 20 along the first direction X and are distributed along the second direction Y, so that the two output members 40 are arranged on the same side in the first direction X. At the same time, it can avoid forming a power supply path by using a single long output member 40 spanning across the battery pack 20, which is beneficial to reducing weight and cost and improving the integration and energy density of the battery 100.

[0092] The battery 100 provided by the embodiment of the present application adopts the above structural form. During molding, the second side walls 212 of an even number of battery cells 21 can be arranged opposite to each other along the second direction Y to form the battery pack 20. Multiple battery packs 20 are arranged along the first direction X. The bus bar 30 is used to electrically connect adjacent two battery cells 21 and form two output terminals at the outermost battery packs 20 along the first direction X. The two output terminals are distributed along the second direction Y. Then, two output members 40 are arranged to be electrically connected to the two output terminals respectively to jointly form a power supply path with the bus bar 30. By this molding method, it can avoid forming a power supply path by using a single long output member 40 spanning across the battery pack 20, which is beneficial to reducing weight and cost and improving the integration and energy density of the battery 100, and can simplify the connection structure and improve the space utilization rate inside the box 10.

[0093] Please refer to Figures 2 to 6 , in some embodiments, the bus bar 30 includes a plurality of first bus bars 31 and a plurality of second bus bars 32. The first bus bar 31 is used to electrically connect adjacent two battery cells 21 along the first direction X, and the second bus bar 32 is used to electrically connect adjacent two battery cells 21 along the second direction Y.

[0094] By setting in this way, the bus bar 30 can be assembled regularly, improving the assembly efficiency. And it can ensure the effectiveness of forming two output terminals on the outermost battery pack 20 in the first direction X, thus ensuring that the two output members 40 are arranged on the same side in the first direction X.

[0095] Optionally, the first bus bar 31 can be electrically connected to the electrode terminals 201a on adjacent battery cells 21 in the first direction X to achieve series or parallel or mixed connection of multiple battery cells 21 in the same battery pack 20. The second bus bar 32 can be electrically connected to the electrode terminals 201a on adjacent battery cells 21 in the second direction Y to achieve series or parallel or mixed connection of multiple battery cells 21 in adjacent two battery packs 20.

[0096] Please continue to refer to Figures 2 to 6 , in some embodiments, the second bus bar 32 is used to electrically connect adjacent two battery cells 21 in the outermost battery pack 20 along the first direction X.

[0097] By setting it up in this way, except for the adjacent battery cells 21 in the battery pack 20 located on the outermost side along the first direction X, the remaining battery cells 21 are connected by the first bus 31, so that the battery pack 20 located on the outermost side along the first direction X can form two output ends, thereby ensuring the effectiveness of the two output components 50 being set on the same side of the first direction X.

[0098] In some embodiments, the two output terminals are respectively disposed on two battery cells 21 located at the second direction end portions of the outermost battery pack 20 .

[0099] By arranging in this manner, the effectiveness of arranging the two output members 40 on the same side of the first direction X can be ensured, thereby simplifying the connection structure, improving the space utilization rate in the box body 10, and facilitating processing and assembly.

[0100] Furthermore, the lengths of the two output members 40 can be reduced, which helps to reduce weight and cost, and improve the integration and energy density of the battery 100 .

[0101] In some embodiments, the battery 100 further includes a limiter 50 , which is fixedly connected to the box body 10 and abuts against the first side wall 211 of the battery cell 21 . The limiter 50 is used to limit deformation of the battery cell 21 in the first direction X.

[0102] The positioning member 50 is provided to limit deformation of the battery cell 21 in the first X direction, thereby protecting the safe operation of the battery cell 21 and ensuring the safety performance of the battery 100. Furthermore, the positioning member 50 can be provided to facilitate accurate and rapid installation of the battery pack 20 at a preset position within the housing 10, preventing deviation during installation that could prevent accurate installation of other components. This improves installation efficiency and accuracy, thereby ensuring the high quality of the battery 100.

[0103] Optionally, the stopper 50 and the box body 10 may be an integrally formed structure, formed by bending, stamping, etc. Of course, the stopper 50 and the box body 10 may also be provided separately and then connected as a whole by welding, bonding, etc.

[0104] Optionally, the number of the limiting members 50 may be one or two, and of course, may also be multiple.

[0105] The limiting member 50 can limit the expansion and deformation of the battery cell 21 in the first direction X to protect the operation safety of the battery cell 21 , thereby ensuring the safety performance of the battery 100 .

[0106] In some embodiments, in the height direction Z of the box body 10, the ratio of the height dimension of the limiting member 50 to the height dimension of the battery cell 21 can be set between 2 / 3 and 11 / 10, including the two end values of 2 / 3 and 11 / 10, which can not only meet the structural strength function and the effect of resisting expansion, but also save space and improve space utilization rate.

[0107] Please continue to refer to Figures 3 to 6 , in some embodiments, the battery 100 further includes an output member base 60, and the output member base 60 is disposed on the limiting member 50 and is used to support the output member 40. Optionally, the output member base 60 includes an insulating material.

[0108] By setting in this way, it is convenient for the installation and fixation of the limiting member 50, and can also avoid contact short circuit, thereby ensuring the safety performance of the battery 100.

[0109] Optionally, the number of the output member bases 60 can be set to one, two. Of course, it can also be set to multiple.

[0110] In some embodiments, a receiving groove 51 is provided on the limiting member 50, and at least a part of the output member base 60 extends into the receiving groove 51.

[0111] The receiving groove 51 can play a limiting role on the output member base 60 to prevent it from being displaced and causing safety problems of the battery 100. At the same time, it can also play a positioning role, which is convenient for installing the output member base 60 and improving the manufacturing efficiency.

[0112] Optionally, the number of the receiving grooves 51 can be one or two. Of course, it can also be set to multiple. Optionally, the shape of the receiving groove 51 can be set to a shape matching the output member base 60, and the receiving groove 51 can just be put into the output member base 60 to limit it and prevent displacement.

[0113] Optionally, the number between the receiving groove 51 and the output member base 60 can be in one-to-one correspondence, or can be set as many-to-one, that is, multiple output member bases 60 can be disposed in the same receiving groove 51.

[0114] Exemplarily, two or more receiving grooves 51 are provided on the limiting member 50, and the two or more receiving grooves 51 are spaced apart.

[0115] Optionally, the receiving groove 51 can be formed by stamping, that is, the receiving groove 51 can be quickly formed on the limiting member 50, the process is simple, and at the same time, it can also save materials and is beneficial to realizing lightweight design.

[0116] In some embodiments, the limiting member 50 extends along the second direction Y and is fixedly connected to the box body 10 at both ends in the second direction Y.

[0117] By configuring in this manner, the overall structural strength of the box body 10 can be improved, the ability to resist the expansion of the battery cells 21 can be improved, and safety performance can be ensured.

[0118] In some embodiments, the limiting member 50 abuts against the first side wall 211 of the battery cell 21 in the outermost battery pack 20 .

[0119] By setting in this manner, the battery pack 20 can be positioned, which is beneficial to installation efficiency and installation accuracy, thereby ensuring that the battery 10 has good quality.

[0120] Optionally, there is one limiting member 50 , which abuts against the first side wall 211 of the battery cell 21 in the outermost battery pack 20 .

[0121] Optionally, there are two limiting members 50 , which abut against the first side walls 211 of the battery cells 21 in the two outermost battery groups 20 .

[0122] In some optional embodiments, the limiting member 50 is configured as a plate-like structure, which helps to reduce the space required for arranging the limiting member 50 , allowing the box 10 to accommodate more battery cells 21 and improving the utilization of the internal space of the box 10 .

[0123] For example, the cross-sectional areas of all portions of the stopper 50 in the second direction Y are the same, which facilitates production and saves space within the housing 10. Furthermore, each portion of the stopper 50 is closely fitted to the first sidewall 211 of each battery cell 21, thereby enhancing support and protection and improving space utilization within the housing 10.

[0124] The limiting member 50 abuts against the first side wall 211 of the battery cell 21, and can limit the deformation of the battery cell 21 in the first direction X. When the battery cell 21 expands during charging and discharging, it can buffer the battery cell 21 and provide a force in the opposite direction of the expansion force, which is beneficial to improving the operating safety of the battery cell 21, thereby ensuring the safety and reliability of the battery 100. At the same time, it can provide a clamping force to the battery pack 20 to achieve the function of limiting and fixing, thereby ensuring that the battery 100 has good quality.

[0125] In addition, the limiter 50 is arranged in the box body 10 and is arranged in contact with the battery cell 21, which can also reduce the end plates and connectors, etc., which is conducive to improving the installation efficiency and installation accuracy, thereby simplifying the preparation process, reducing the production cost and the overall weight of the battery 100, and achieving a lightweight design.

[0126] In addition, by setting it in this way, the limiter 50 can also serve as a structural member of the box body 10 to meet the structural strength requirements, with high integration, and make the limiter 50 and the battery cell 21 fit more closely to each other, which is conducive to improving the compactness and improving the space utilization of the box body 10.

[0127] By setting the first side wall 211 as the wall with the largest area among all the outer walls of the battery cell 21, the limiting member 50 can better limit and fix the battery cell 21, resist expansion deformation and improve the structural strength, thereby better ensuring the safety performance of the battery 100.

[0128] Exemplarily, two limiting members 50 can be provided. The two limiting members 50 are respectively arranged between the box body 10 and the first side wall 211 of the battery cell 21 and abut against the first side wall 211, which can not only realize the limiting and fixing of the battery cell 21 and the function of resisting the expansion force, but also prevent the battery cell 21 from contacting the box body 10, preventing the occurrence of electrical connection or thermal runaway. At the same time, the limiting member 50 can also provide support and protection for the battery cell 21 and improve the structural strength.

[0129] The battery 100 provided by the embodiment of the present application adopts the above structural form. During molding, the second side walls 212 of the battery cells 21 in the same battery group 20 can be relatively arranged first, and the second side walls 212 of two adjacent battery cells 21 are connected accordingly to form a battery group 20 including two or more battery cells 21 distributed along the second direction Y of the box body 10. Then, the battery group 20 is clamped by a tool and placed between the limiting members 50 arranged at intervals along the first direction X in the box body 10. After removing the tool, each battery cell 21 in the battery group 20 rebounds and presses against the limiting member 50, so that the limiting member 50 abuts against the first side wall 211 of the battery cell 21, and then the box body 10 is closed to complete the preparation of the battery 100. Through this molding method, under the condition of meeting the requirements of limiting and fixing and resisting expansion deformation, the space utilization rate of the box body 10 can be improved, lightweight design can be realized, and the preparation is simple, beneficial to molding and cost can be reduced.

[0130] In some embodiments, a plurality of cavities penetrating along the second direction Y are arranged in the limiting member 50.

[0131] Optionally, the plurality of cavities can be arranged at intervals in the first direction X. Of course, they can also be arranged at intervals in the height direction Z.

[0132] Optionally, in the height direction Z, the plurality of cavities can be arranged in a row. Of course, multiple rows can also be arranged.

[0133] Exemplarily, the plurality of cavities are arranged at intervals in the height direction Z and arranged in a row to reduce the extension length of the limiting member 50 in the first direction X, so that there is more space in the box body 10 to accommodate more battery cells 21, which is beneficial to improving the energy density of the battery 100.

[0134] By providing a plurality of cavities penetrating along the second direction Y within the limiting member 50, when the battery cell 21 expands during charging and discharging, the space within the cavities is conducive to being compressed in the first direction X so that the limiting member 50 can limit the deformation of the battery cell 21, buffer and absorb the expansion force of the battery cell 21, thereby ensuring the safety performance of the battery cell 21.

[0135] Moreover, the provision of the cavities can also reduce the weight of the limiting member 50, lower the cost, thereby achieving a lightweight design, and at the same time can improve the overall energy density of the battery 100.

[0136] In some embodiments, the number of the limiting members 50 configured as plate-like structures can be set to two, and the two plate-like structures are spaced apart in the first direction X, and the battery pack 20 is clamped between the two plate-like structures.

[0137] Exemplarily, the limiting members 50 of the plate-like structures are set to two and are spaced apart in the first direction X, and the battery pack 20 is clamped between the two plate-like structures, that is, the plate-like structures are located between the battery pack 20 and the inner wall of the box body 10, and the plate-like structures are arranged to abut against the first side wall 211. The two plate-like structures can be respectively used to limit the deformation of the battery cell 21 in the first direction X of the box body 10, and can better meet the requirements of limiting and fixing as well as resisting expansion, and better ensure the safety performance of the battery 100.

[0138] Please continue to refer to Figures 3 to 7 , in some embodiments, along the first direction X, a partition portion 70 is provided between adjacent two battery packs 20, and the partition portion 70 abuts against the first side wall 211 of each battery cell 21 in the adjacent two battery packs 20.

[0139] By setting in this way, the partition portion 70 can achieve at least one of the functions of improving the structural strength and resisting the expansion force.

[0140] Optionally, the partition portion 70 abuts against the first side wall 211 of each battery cell 21 in the adjacent two battery packs 20. It can support the battery cell 21 as a structural member of the box body 10 to improve the structural strength. Moreover, the partition portion 70 can also be used to resist the expansion force of the battery cells 21 arranged in abutment, thereby ensuring the safety performance of the battery 100.

[0141] In some embodiments, the ratio of the height dimension of the partition portion 70 in the height direction Z to the height dimension of the battery cell 21 can be set between 2 / 3 and 11 / 10, and includes the two end values of 2 / 3 and 11 / 10, which can not only meet the function of structural strength and the effect of resisting expansion, but also save space and improve space utilization.

[0142] Furthermore, optionally, the separator 70 may also be used to perform thermal management on the abutting battery cells 21 to ensure that the battery cells 21 are within a suitable temperature range, thereby ensuring the safety performance of the battery 100 .

[0143] In addition, the partition 70 can also prevent the battery cells 21 of two adjacent battery groups 20 in the first direction X from directly contacting each other, thereby preventing problems such as short circuits from occurring.

[0144] Optionally, the number of battery packs 20 is two, and of course, it can also be set to multiple.

[0145] Similarly, the number of separators 70 can be set to one. When the number of battery packs 20 is set to two, one separator 70 is sandwiched between the two battery packs 20. Of course, the number of separators 70 can also be set to multiple. When the number of battery packs 20 is set to multiple, one separator 70 is sandwiched between each two adjacent battery packs 20.

[0146] Optionally, more than two battery packs 20 are distributed along the first direction X, and each battery pack 20 includes more than two battery cells 21 distributed along the second direction Y of the box 10. The partition 70 can prevent the battery cells 21 of two adjacent battery packs 20 in the first direction X from directly contacting each other, causing problems such as short circuits.

[0147] In some embodiments, the partition 70 is bonded and fixed to the first side wall 211 of each battery cell 21 in two adjacent battery packs 20 .

[0148] This arrangement provides a more secure and stable connection between the separator 70 and each battery cell 21, thereby ensuring the safety and reliability of the battery 100. Furthermore, by bonding the separator 70 to each battery cell 21, the separator 70 and each battery cell 21 of the battery pack 20 can be integrally bonded together before being installed as a whole within the housing 10. This facilitates the assembly of the battery 100 and allows for a more compact arrangement of adjacent battery packs 20, thereby improving the space utilization efficiency of the housing 10.

[0149] In addition, the use of bonding helps reduce consumables and overall weight, thereby achieving a lightweight design for the battery 100. Furthermore, it can simplify the manufacturing process and improve production efficiency and assembly efficiency.

[0150] Optionally, a connecting adhesive layer may be provided between the partition 70 and the first side wall 211 to bond and fix the partition 70 to each battery cell 21 .

[0151] Optionally, the connecting adhesive layer may include a thermally conductive structural adhesive, which not only has good bonding effect, but also has characteristics such as thermal conductivity, aging resistance, fatigue resistance, and corrosion resistance. It can improve the connection strength between the battery cell 21 and the partition 70 and the thermal management efficiency, enabling more rapid heat transfer between the battery cell 21 and the partition 70. Of course, the connecting adhesive layer also includes double-sided tape, etc.

[0152] In some embodiments, the partition 70 is used to adjust the temperature of the battery cell 21, and a medium flow channel is provided in the partition 70.

[0153] Optionally, the partition 70 can be set as a heat exchange plate, and the heat exchange plate is clamped between two adjacent battery packs 20 and connected to the first side wall 211. Through this setting, the temperature of the battery cell 21 in contact with it can be adjusted to meet the thermal management requirements of the battery cell 21. At the same time, since the first side wall 211 is the wall with the largest area among all the outer walls of the battery cell 21, the contact area between the heat exchange plate and the battery cell 21 can be increased, which is beneficial to improving the thermal management efficiency of the battery cell 21.

[0154] Each battery cell 21 can have two first side walls 211, that is, the two first side walls 211 of each battery cell 21 are respectively connected to the partition 70 to better improve the thermal management efficiency and ensure the temperature stability of the battery cell 21.

[0155] Thermal management should be understood as that the heat between the partition 70 and the battery cell 21 can be transferred between the two. For example, the partition 70 is directly in contact with the battery cell 21 to achieve contact heat exchange, or a thermal conductive structure (such as thermal conductive adhesive) is provided between the partition 70 and the battery cell 21 for heat exchange. Specifically, the partition 70 cools or heats the battery cell 21 to control the temperature of the battery cell 21 within a suitable range, improving the service life and safety performance of the battery cell 21. And when a certain battery cell 21 has a thermal runaway, the heat generated by the thermally runaway battery cell 21 will be taken away by the partition 70 in contact with it, reducing the temperature of the thermally runaway battery cell 21 and avoiding the occurrence of thermal runaway problems in adjacent battery cells 21, thus ensuring the safety performance of the battery cell 21.

[0156] Optionally, a partition 70 is clamped between two adjacent battery packs 20. It can be understood that one partition 70 can act on two battery packs 20 and exchange heat with them, and one battery pack 20 can exchange heat with two partitions 70, which is beneficial to improving the thermal management efficiency and enhancing the safety and reliability of the battery cell 21.

[0157] A medium flow channel is provided in the partition 70 to enable a heat exchange medium (such as water, air, phase change material, etc.) to flow in the medium flow channel to exchange heat with the battery cell 21, so that the partition 70 can complete the thermal management of the battery cell 21.

[0158] With the above settings, the partition part 70 can also serve as a structural member of the box body 10 to improve the overall structural strength of the battery 100, thereby eliminating the transverse and longitudinal beams arranged inside the box body 10, with high integration, reduced cost, improved space utilization rate of the box body 10, and achieving lightweight design. Moreover, since the first side wall 211 is the wall with the largest area among all the outer walls of the battery cell 21, the partition part 70 can better exchange heat with the battery cell 21, improving the thermal management efficiency. In addition, by clamping the partition part 70 between two adjacent battery groups 20, it is also possible to prevent damage or even liquid leakage of the partition part 70 under working conditions such as collision and vibration, which is beneficial to improving the service life and safety reliability of the partition part 70, thereby improving the thermal management efficiency of the battery cell 21 and further ensuring the safety performance of the battery 100.

[0159] Please refer to Figure 8 , in some embodiments, the battery 100 further includes a connection channel 71, an inlet pipe 72, and an outlet pipe 73. The medium flow channels of each partition part 70 are connected through the connection channel 71, and the inlet pipe 72 and the outlet pipe 73 are connected to the medium flow channel of the same partition part 70.

[0160] Optionally, the connection channel 71, the inlet pipe 72, and the outlet pipe 73 can be arranged on the same side of the partition part 70 extending along the second direction Y. Of course, they can also be respectively arranged on both sides of the partition part 70 extending along the second direction Y.

[0161] Optionally, the extending direction of the inlet pipe 72 and the extending direction of the outlet pipe 73 can be the same or different.

[0162] Optionally, connection channels 71 are arranged on both sides of the medium flow channel of a partition part 70 extending along the second direction Y. The connection channels 71 on both sides of the medium flow channel of each partition part 70 are sequentially connected and are respectively connected to the inlet pipe 72 and the outlet pipe 73, which is convenient for assembly and replacement and has stronger flexibility.

[0163] Moreover, by arbitrarily matching the connection channel 71, the inlet pipe 72, and the outlet pipe 73, it is applicable to various numbers of partition parts 70, which is beneficial to improving flexibility and versatility.

[0164] Optionally, connectors can be arranged on both sides of the partition part 70 extending along the second direction Y to connect with the connection channel 71, improving the connection strength.

[0165] With this setting, the medium flow channels of each partition part 70 can meet the demand for the heat exchange medium only through one inlet pipe 72 and one outlet pipe 73, reducing the space occupancy rate, and can simplify the structures of the inlet pipe 72 and the outlet pipe 73, which is beneficial to assembly and replacement, and can be applicable to the heat exchange medium supply of different numbers of partition parts 70, improving flexibility and versatility.

[0166] In some embodiments, through holes are provided on the box body 10, and the inlet pipe 72 and the outlet pipe 73 respectively extend out of the box body 10 through the through holes.

[0167] By setting in this way, one ends of the inlet pipe 72 and the outlet pipe 73 are extended to the outside of the box body 10. The inlet pipe 72 can be connected to the device that provides the heat exchange medium externally, which is beneficial to obtaining the heat exchange medium and transporting it to the partition portion 70. The outlet pipe 73 can be connected to the device that stores the heat exchange medium externally to discharge the heat exchange medium that has undergone heat exchange with the battery cell 21, which is beneficial to the acquisition and discharge of the heat exchange medium. At the same time, the risk of leakage of the heat exchange medium in the box body 10 can be reduced, thereby ensuring the safety and reliability of the battery 100.

[0168] Optionally, the device that provides the heat exchange medium externally and the device that stores the heat exchange medium can be set as the same device. Of course, they can also be two separate devices.

[0169] Please continue to refer to Figure 3 In some embodiments, the box body 10 includes a top cover 11, a bottom cover 12, and a receiving frame 13. The bottom cover 12 and the top cover 11 are oppositely arranged at both ends of the receiving frame 13 in the height direction Z of the box body 10, and the limiting member 50 is connected to at least one of the receiving frame 13, the top cover 11, and the bottom cover 12.

[0170] The top cover 11, the bottom cover 12, and the receiving frame 13 together enclose the box body 10 that houses the battery cell 21 to ensure the sealing requirements.

[0171] Optionally, the receiving frame 13 may have an opening 10a. Optionally, the receiving frame 13 may have an opening 10a on one side, that is, the receiving frame 13 is integrally formed with one of the top cover 11 and the bottom cover 12, and the other closes this opening 10a and is connected to the receiving frame 13 to enclose and form the box body 10 to provide sealing protection for the battery pack 20. Of course, the receiving frame 13 may also have openings 10a on both sides, and the top cover 11 and the bottom cover 12 are respectively used to close the two openings 10a and are connected to the receiving frame 13 to enclose and form the box body 10 to provide sealing protection for the battery pack 20.

[0172] To improve the sealing performance after the connection between the receiving frame 13 and the top cover 11 and the bottom cover 12, a sealing member, such as sealant, sealing ring, etc., can be provided between the receiving frame 13 and the top cover 11 or the bottom cover 12.

[0173] Optionally, the top cover 11, the bottom cover 12, and the receiving frame 13 can be connected by means of bolts, flow drill screws (FDS), bonding, welding, etc. The present application does not limit this.

[0174] Optionally, the top cover 11 or the bottom cover 12 can be made of a material with a certain high hardness and strength (such as aluminum alloy), which is not easily deformed and has higher structural strength to improve safety performance.

[0175] Optionally, the bottom cover 12 and the receiving frame 13 can be integrally formed. Of course, the bottom cover 12 and the receiving frame 13 can also be provided separately and then connected together by welding, bonding or other means.

[0176] Exemplarily, the bottom cover 12 and the receiving frame 13 are detachably connected, which can reduce costs and is easy to replace the bottom cover 12 or the receiving frame 13 when problems such as damage occur.

[0177] Optionally, the bottom cover 12 and the receiving frame 13 can be made of the same material. Of course, they can also be made of different materials.

[0178] Optionally, the bottom cover 12 can be made of a material with a certain high hardness and strength (such as aluminum alloy), which is not easily deformed and has higher structural strength to improve safety performance.

[0179] In some embodiments, the bottom cover 12 can be made of a material with higher strength than that of the receiving frame 13, which is beneficial to absorbing external collision forces to buffer the battery 100, preventing the battery 100 from deforming and failing during vibration, impact, etc., improving the safety and reliability of the battery 100, further enhancing the overall structural strength of the battery 100 to adapt to various working conditions.

[0180] Optionally, the bottom cover 12 can also be provided with a rib structure, which can better improve the structural strength of the battery 100.

[0181] By connecting the limiting member 50 to at least one of the receiving frame 13, the top cover 11 and the bottom cover 12 respectively, the overall structure of the battery 100 can be set according to different requirements, improving versatility.

[0182] Optionally, the limiting member 50 can be connected to the receiving frame 13 and the bottom cover 12. Of course, it can also be connected to the receiving frame 13 and the top cover 11. Of course, it can also be connected to the receiving frame 13, the top cover 11 and the bottom cover 12.

[0183] Exemplarily, the limiting member 50 is connected to the receiving frame 13 and the bottom cover 12, and the limiting member 50 is spaced from the top cover 11. During assembly and forming, the battery cell 21, the limiting member 50 can be first connected to the receiving frame 13 and the bottom cover 12, and then the top cover 11 is covered to form the sealed space of the box body 10.

[0184] Exemplarily, the limit member 50 is spaced apart from the top cover 11. Optionally, at least a portion of the top cover 11 can be recessed away from the battery cell 21 in the height direction Z to form a recess. There is a gap between the recess and the limit member 50. When collision, vibration or other working conditions occur, this gap can provide a buffering effect, which is conducive to better support and protection of the limit member 50 and the battery cell 21, so as to improve safety and reliability.

[0185] In some embodiments, the box body 10 further includes a connecting seat 14 , which is arranged to protrude from the receiving frame 13 along the second direction Y. The connecting seat 14 is used to install the battery 100 on an electrical device.

[0186] By providing the connection seat 14, the battery 100 as a whole is facilitated to be connected and fixed in the electrical device in which it is used, such as being fixed to the chassis of the vehicle 1000, thereby improving the connection stability and making the connection more secure. At the same time, it avoids safety risks of the battery 100 caused by connection failure, thereby ensuring the safety and reliability of the battery 100.

[0187] Optionally, the connecting seat 14 is provided to protrude from one side of the accommodating frame 13 along the second direction Y. Of course, both sides of the accommodating frame 13 along the second direction Y are provided with protruding connecting seats 14 .

[0188] Please continue reading Figure 2 and Figure 3 In some embodiments, the battery cell 21 includes an electrode terminal 201 a , and along the height direction Z, a surface of the battery cell 21 facing away from the electrode terminal 201 a is connected to the top cover 11 or the bottom cover 12 .

[0189] By arranging in this manner, the battery cell 21 can be placed vertically in the box body 10 , or placed upside down in the box body 10 , which can improve the selectivity of the manufacturing and forming of the battery 100 .

[0190] Optionally, along the height direction Z, the surface of the battery cell 21 facing away from the electrode terminal 201a is connected to the bottom cover 12. It can be understood that the battery cell 21 is placed vertically within the housing 10, that is, the electrode terminal 201a is positioned close to the top cover 11. This allows the electrode terminal 201a of the battery cell 21 to face upward when the battery cell 21 is assembled onto an electrical device such as a vehicle 1000. This prevents the electrode terminal 201a from scraping against the bottom cover 12 when the battery 100 as a whole encounters bumps or vibrations, thereby preventing damage to the pressure relief mechanism and other structures. This ensures the safety performance of the battery 100.

[0191] Optionally, along the height direction Z, the surface of the battery cell 21 facing away from the electrode terminal 201a is connected to the top cover 11. It can be understood that the battery cell 21 is placed upside down in the box body 10, so that when the battery cell 21 is assembled to an electrical device such as a vehicle 1000, it can be placed upside down, with the electrode terminal 201a of the battery cell 21 facing downwards, improving the space utilization rate of the box body 10 in the height direction Z and ensuring the personal safety of the driver.

[0192] In some embodiments, the battery 100 further includes a buffer member, which is disposed between the electrode terminal 201a and the top cover 11 or the bottom cover 12 along the height direction Z.

[0193] By providing the buffer member, when the whole battery 100 encounters bumps or vibrations, the buffer member can provide buffering for the electrode terminal 201a of the battery cell 21, preventing it from scratching against the top cover 11 or the bottom cover 12 and causing damage to structures such as the pressure relief mechanism, thereby ensuring the safety performance of the battery 100.

[0194] In a second aspect, an embodiment of the present application provides an electrical device, including the battery 100 in any of the foregoing embodiments. The battery 100 is used to provide electrical energy so that the electrical device can operate normally.

[0195] Please refer to Figure 9 , in a third aspect, an embodiment of the present application provides a forming method of a battery 100, including the following steps:

[0196] S100. Provide an even number of battery cells 21. The battery cell 21 includes a first side wall 211 and a second side wall 212, and the first side wall 211 is the wall with the largest area among all the outer walls of the battery cell 21;

[0197] S200. Group a plurality of battery cells 21. Each group includes an even number of battery cells 21. The second side walls 212 of the battery cells 21 in the same group are arranged opposite to each other to form two or more battery groups 20;

[0198] S300. Stack two or more battery groups 20 and place them as a whole in the box body 10.

[0199] S400. Electrically connect the battery cells 21 of each battery group 20 through a bus bar 30;

[0200] S500. Provide two output members 40, and arrange the two output members 40 on the same side in the first direction X. The two output members 40 are respectively electrically connected to two output terminals arranged on the battery group 20 located on the outermost side along the first direction X, and the two output terminals are distributed along the second direction Y to jointly form a power supply path with the bus bar 30.

[0201] In step S100 , the provided battery cell 21 may be one of the battery cells 21 of the aforementioned embodiments.

[0202] In step S200, multiple battery cells 21 are grouped, each group including an even number of battery cells 21. Optionally, each group may include four battery cells 21, six battery cells 21, or eight battery cells 21, which is not limited in this application, and only requires that the number of battery cells 21 included in each group is an even number.

[0203] In step S300, two or more battery packs 20 can be placed together as a whole into the box 10. Optionally, after the battery pack 20 is clamped and placed into the box 10 using a tool, the tool is removed, and each battery cell 21 in the battery pack 20 rebounds and presses against the box 10, forming an interference fit with the box 10, sealing the box 10, and completing the preparation of the battery 100. This molding method can improve the connection strength and compactness between the battery cells 21, improve the space utilization of the box 10, achieve a lightweight design, and simplify the preparation, facilitate molding, and reduce costs.

[0204] In step S400 , the busbar 30 may electrically connect two adjacent battery cells 21 in the same battery pack 20 , and of course, may also electrically connect two adjacent battery cells 21 in two adjacent battery packs 20 .

[0205] Optionally, in step S500, two or more output components 40 are arranged on the same side of the battery 100 in the first direction X, and are respectively electrically connected to two output terminals provided on the battery pack 20 located at the outermost side along the first direction X. The two output terminals are distributed along the second direction Y to form a power supply path together with the busbar 30. Through this forming method, it is possible to avoid using a longer output component 40 to span the battery pack 20 to form a power supply path, which is beneficial to reducing weight and cost, improving the integration and energy density of the battery 100, and simplifying the connection structure, thereby improving the space utilization in the box 10.

[0206] Optionally, the two output ends can be respectively arranged on the two battery cells 21 located at the end of the second direction Y in the outermost battery pack 20, which is conducive to reducing the length of the two output parts 40, thereby reducing weight and cost, and improving the integration and energy density of the battery 100.

[0207] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0208] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, comprising: a box body, which includes a top cover, a bottom cover and a receiving frame, and the bottom cover and the top cover are oppositely arranged at both ends of the receiving frame in the height direction of the box body; a battery pack, arranged in the box body, the number of the battery packs is more than two and arranged along a first direction, each battery pack includes an even number of battery cells arranged along a second direction, the second direction is perpendicular to the first direction, the battery cell includes a first side wall and a second side wall connected to each other, the first side wall is the wall with the largest area among all the outer walls of the battery cell, the first direction is perpendicular to the first side wall, and the second side walls of two adjacent battery cells are arranged oppositely along the second direction; a bus bar, used for electrically connecting two adjacent battery cells; two output components, arranged on the same side in the first direction; wherein, two output terminals are arranged on the battery pack located on the outermost side along the first direction, the two output terminals are distributed along the second direction, and the two output components are respectively electrically connected to the two output terminals to jointly form a power supply path with the bus bar; the battery further includes a limiting component, the limiting component is fixedly connected to the inside of the box body and abuts against the first side wall of the battery cell, and the limiting component is used for restricting the deformation of the battery cell in the first direction; the limiting component is respectively connected to at least one of the receiving frame, the top cover and the bottom cover; the battery further includes an output component base, and the output component base is arranged on the limiting component and used for supporting the output component; 2. The battery according to claim 1, wherein, the bus bar includes a plurality of first bus bars and a plurality of second bus bars, the first bus bar is used for electrically connecting two adjacent battery cells along the first direction, and the second bus bar is used for electrically connecting two adjacent battery cells along the second direction; 3. The battery according to claim 2, wherein the second bus bar is used for electrically connecting two adjacent battery cells in the battery pack located on the outermost side along the first direction; 4. The battery according to any one of claims 1 to 3, wherein, the two output terminals are respectively arranged on two battery cells located at the ends in the second direction in the outermost battery pack; 5. The battery according to claim 1, wherein, the limiting component extends along the second direction and is connected to the box body at both ends in the second direction; 6. The battery according to claim 1, wherein, the limiting component abuts against the first side wall of the battery cell in the outermost battery pack; 7. The battery according to claim 6, wherein, a plurality of cavities penetrating along the second direction are arranged inside the limiting component; 8. The battery according to claim 1, wherein, a partition part is arranged between two adjacent battery packs along the first direction, and the partition part abuts against the first side wall of each battery cell in the two adjacent battery packs; 9. The battery according to claim 8, wherein, the partition part is adhesively fixed to the first side wall of each battery cell in the two adjacent battery packs; 10. The battery according to claim 8, wherein, the partition part is used for adjusting the temperature of the battery cell, and a medium flow channel is arranged inside the partition part; 11. The battery according to claim 10, wherein, the battery further includes a connecting channel, an inlet pipe and an outlet pipe, the medium flow channels of each partition part are communicated through the connecting channel, and the inlet pipe and the outlet pipe are communicated with the medium flow channel of the same partition part.

12. The battery according to claim 1, wherein, The box body further includes a connecting seat, which is arranged to protrude from the accommodating frame along the second direction and is used to install the battery on an electrical device.

13. The battery according to claim 1, wherein, The battery cell includes an electrode terminal, and along the height direction, a surface of the battery cell facing away from the electrode terminal is connected to the top cover or the bottom cover.

14. An electrical device, wherein, The battery according to any one of claims 1 to 13 is used to provide electrical energy.

15. A battery forming method comprising: Providing an even number of battery cells, each battery cell comprising a first side wall and a second side wall, wherein the first side wall is the wall with the largest area among all outer walls of the battery cell; Grouping the plurality of battery cells, each group including an even number of the battery cells, and arranging the second side walls of the battery cells in the same group opposite to each other to form two or more battery groups; Stacking two or more battery packs and placing them as a whole in a box, wherein the box includes a top cover, a bottom cover, and a receiving frame, wherein the bottom cover and the top cover are arranged at opposite ends of the receiving frame in the height direction of the box; electrically connecting the battery cells of each battery pack through a busbar; Providing two output members, the two output members are arranged on the same side in the first direction, the two output members are respectively electrically connected to two output terminals of the battery pack located at the outermost side in the first direction, and the two output terminals are distributed along the second direction to form a power supply path together with the busbar; Providing a limiting member, fixedly connected to the box and abutting against the first side wall of the battery cell, the limiting member is used to limit the deformation of the battery cell in the first direction; The limiting members are respectively connected to the containing frame and at least one of the top cover and the bottom cover; An output member base is provided, and the output member base is arranged on the limiting member and is used to support the output member.

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