Battery and electric equipment

Abstract

The embodiment of the invention discloses a battery and electric equipment. The battery includes: a first member; a second member; the limiting component is located on one side, in the first direction, of the first component and one side, in the first direction, of the second component, the limiting component comprises a first limiting part and a second limiting part which are connected, the first limiting part is fixedly connected with the first component in the first direction, and the second limiting part is used for limiting the second component to move in the first direction. According to the battery and the electric equipment provided by the embodiment of the invention, the structural stability of the battery can be improved.

Description

Technical Field

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

[0002] With the continuous advancement of battery technology, various new energy industries that use batteries as energy storage devices have developed rapidly. In the development of battery technology, in addition to improving battery performance, how to improve battery structural stability while ensuring processing efficiency is also an issue that cannot be ignored. Summary of the invention

[0003] The embodiments of the present application provide a battery and an electrical device, which can improve the structural stability of the battery.

[0004] In a first aspect, a battery is provided, comprising: a first component; a second component; a limiting component, wherein the limiting component is located on one side of the first component and the second component along a first direction, the limiting component comprises a first limiting portion and a second limiting portion connected to each other, the first limiting portion is fixedly connected to the first component along the first direction, and the second limiting portion is used to limit the movement of the second component along the first direction.

[0005] Therefore, the battery of the embodiment of the present application includes a limiting component, which includes a first limiting portion and a second limiting portion that are connected. The first limiting portion is fixedly connected to the first component of the battery along a first direction, so that the limiting component can be relatively fixed to the first component along the first direction, that is, the movement of the limiting component and the first component along the first direction can be limited; further, the second limiting portion connected to the first limiting portion can be used to limit the movement of the second component of the battery along the first direction. In this way, even if a connecting member for fixing is not provided between the second limiting portion and the second component, the movement of the second component along the first direction can be limited by the second limiting portion, thereby improving the structural stability of the battery; the limiting component has a simple structure and is easy to implement, which reduces the influence of the limiting component on the processing and assembly efficiency of the battery.

[0006] In some embodiments, the first limiting portion is detachably connected to the first component to facilitate disassembly and assembly.

[0007] In some embodiments, the first position-limiting portion includes a protruding structure protruding toward the first component, the first component includes a groove structure opening toward the first position-limiting portion, and the protruding structure is accommodated in the groove structure and has an interference fit with the groove structure. When the protruding structure is accommodated in the groove structure and has an interference fit with the groove structure, the first position-limiting portion and the first component can be fixed along the first direction, and the structure is simple and easy to process and assemble.

[0008] In some embodiments, from the end of the protrusion structure close to the first component to the end away from the first component, the size of at least a portion of the protrusion structure along the second direction gradually decreases, and the second direction is perpendicular to the first direction. In this way, when the protrusion structure is accommodated in the groove structure, the protrusion structure can be interference-fitted with the groove structure to achieve fixation between the first limiting portion and the first component along the first direction.

[0009] In some embodiments, the difference between the maximum dimension and the minimum dimension of the protrusion structure along the second direction is less than or equal to 1 mm, so that the protrusion structure can be quickly and smoothly accommodated in the groove structure.

[0010] In some embodiments, the protrusion structure is a hollow structure, which is not only easy to process, but also can reduce the weight of the protrusion structure, that is, reduce the weight of the limiting component, and further reduce the weight of the battery.

[0011] In some embodiments, the second limiting portion and the first limiting portion form a step structure, so that the positions of the first limiting portion and the second limiting portion can be reasonably adjusted according to the difference in heights of the first component and the second component along the first direction.

[0012] In some embodiments, the second limiting portion is provided with a reinforcement structure to improve the structural strength and stability of the second limiting portion.

[0013] In some embodiments, the reinforcement structure includes a protrusion of the second limiting portion that protrudes away from the second component, and has a simple structure and is easy to implement.

[0014] In some embodiments, the second limiting portion is provided with a plurality of the reinforcing structures to increase the structural strength of the limiting component, thereby improving the structural stability of the limiting component and the second component, and thereby improving the structural stability of the battery.

[0015] In some embodiments, the battery includes: a plurality of battery cells; a busbar component for electrically connecting the plurality of battery cells, the first component including the busbar component; an insulating component for fixing the plurality of battery cells, the second component including the insulating component.

[0016] The first limiting part is fixedly connected with the converging part along the first direction, so that the first limiting part and the battery cell can be fixedly connected along the first direction, that is, the first limiting part can limit the movement of the converging part along the first direction, and can also limit the movement of the battery cell along the first direction. The limiting part is located on one side of the first part and the second part along the first direction. Since the second limiting part is connected to the first limiting part, the second limiting part can be used to limit the movement of the insulating part along the first direction. The second limiting part can be arranged with the second part along the first direction and abut against each other. Even if there is no connecting member for fixing between the second limiting part and the second part, the movement of the insulating structure along the first direction can be limited by the second limiting part. For example, the insulating structure can be limited to be warped, deformed or misaligned along the first direction, which can reduce the overall size deviation of the insulating structure and reduce the wear between the insulating structure and other parts. In addition, the insulating structure can be used to limit and fix the positions of multiple battery cells. Therefore, the second limiting part can limit the positions of multiple battery cells by limiting the position of the insulating structure.

[0017] In some embodiments, the material of the limiting component includes polypropylene PP and / or polycarbonate PC, which has low cost, fast molding cycle, short production cycle, and can improve processing efficiency.

[0018] In a second aspect, an electric device is provided, comprising: the battery described in the first aspect or any one embodiment of the first aspect, wherein the battery is used to supply power to the electric device.

[0019] In some embodiments, the electrical equipment is a vehicle, a ship or a spacecraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a vehicle according to an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a partial structure of a battery according to an embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of a battery cell according to an embodiment of the present application;

[0023] Figure 4 This is a schematic diagram of the exploded structure of a battery cell according to an embodiment of the present application;

[0024] Figure 5 A schematic top view of a partial structure of a battery according to an embodiment of the present application;

[0025] Figure 6 A partial cross-sectional schematic diagram of a battery according to an embodiment of the present application;

[0026] Figure 7A partial cross-sectional schematic diagram of a first limiting portion according to an embodiment of the present application;

[0027] Figure 8 This is a schematic diagram of the structure of a limiting component according to an embodiment of the present application;

[0028] Fig. 9 This is a schematic structural diagram of a position limiting component according to another embodiment of the present application;

[0029] Fig.10 This is a schematic structural diagram of a position limiting component in yet another embodiment of the present application;

[0030] Fig.11 This is a schematic structural diagram of a limiting component according to another embodiment of the present application.

[0031] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0035] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a non-detachable connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication 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.

[0037] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0039] The term "multiple" as used in the present application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0040] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0041] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0042] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current can be passed without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the diaphragm can be polypropylene (PP) or polyethylene (PE). In addition, the electrode assembly can be a winding structure or a laminated structure, and the embodiments of the present application are not limited thereto.

[0043] The development of battery technology must consider many design factors at the same time, such as performance parameters such as energy density, cycle life, discharge capacity, charge and discharge rate, etc. In addition, the efficiency of the battery processing and production process must also be considered. The battery usually includes multiple components, and the relative fixation between the multiple components must consider factors such as processing efficiency and space utilization. For example, the battery includes multiple battery cells. In order to improve the stability of the multiple battery cells in the battery, a layering structure is usually provided in the battery, which can be used to limit the relative movement of the multiple battery cells. The layering is usually a long strip structure and is fixed at both ends of the layering, but the middle position of the layering is prone to warping and deformation, resulting in overall dimensional deviation, which in turn causes problems such as easy wear and tear with other parts; and because the internal space of the battery is limited, the area around the layering structure that can be selected as a fixed reference point is very limited.

[0044] Therefore, the embodiment of the present application provides a battery and an electrical device that can solve the above problems. The battery of the embodiment of the present application includes a first component, a second component and a limiting component. The limiting component includes a first limiting portion and a second limiting portion that are connected to each other. The first limiting portion is fixedly connected to the first component of the battery along the first direction so that the limiting component can be relatively fixed with the first component along the first direction, that is, the movement between the limiting component and the first component along the first direction can be limited; in addition, the limiting component is located on one side of the first component and the second component along the first direction, and the second limiting portion connected to the first limiting portion can be used to limit the movement of the second component of the battery along the first direction. In this way, even if there is no connecting member for fixing between the second limiting portion and the second component, the movement of the second component along the first direction can be limited by the second limiting portion, thereby improving the structural stability of the battery, and the limiting component has a simple structure and is easy to implement, reducing the influence of the limiting component on the processing and assembly efficiency of the battery.

[0045] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using batteries.

[0046] Electrical equipment may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, and the like. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, and the like; spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; 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, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0047] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0048] For example, Figure 1As shown, it is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 40, a controller 30 and a battery 10 may be arranged inside the vehicle 1. The controller 30 is used to control the battery 10 to supply power to the motor 40. For example, a battery 10 may be arranged at the bottom, front or rear of the vehicle 1. The battery 10 may be used to supply power to the vehicle 1. For example, the battery 10 may be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements during the start-up, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery 10 may not only be used as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0049] Figure 2 FIG. 1 is a schematic diagram showing a partial structure of a battery 10 according to an embodiment of the present application. Figure 2 As shown, in order to meet different power usage requirements, the battery 10 of the embodiment of the present application may include a plurality of battery cells 20, wherein the plurality of battery cells 20 may be connected in series, in parallel, or in hybrid connection, and hybrid connection refers to a mixture of series connection and parallel connection. The battery 10 may also be referred to as a battery pack. For example, a plurality of battery cells 20 may first be connected in series, in parallel, or in hybrid connection to form a battery module, and a plurality of battery modules may then be connected in series, in parallel, or in hybrid connection to form a battery 10. In other words, a plurality of battery cells 20 may directly form a battery 10, or they may first form a battery module, and then the battery module may form a battery 10.

[0050] Figure 3 Schematic diagram of the structure of a battery cell 20 according to an embodiment of the present application is shown. Figure 4 The schematic diagram of the exploded structure of the battery cell 20 of the embodiment of the present application is shown, wherein the Figure 3 and Figure 4 The battery cell 20 shown may be Figure 2 The illustrated battery 10 includes any one of a plurality of battery cells 20 .

[0051] like Figures 2 to 4 As shown, the battery cell 20 may include one or more electrode assemblies 22 and a housing 21 for accommodating the electrode assemblies 22 .

[0052] It should be understood that Figures 2 to 4As shown, the housing 21 of the embodiment of the present application may be a polyhedral structure. Specifically, the housing 21 may include a shell 211 and an end cap 212, wherein the shell 211 may be a hollow structure with an opening 2111 formed at at least one end, and the shape of the end cap 212 may be adapted to the shape of the shell 211, and the end cap 212 is used to cover the opening 2111 of the shell 211, so that the housing 21 isolates the internal environment of the battery cell 20 from the external environment. If the shell 211 is a hollow structure with an opening 2111 formed at one end, the end cap 212 may be set as one, for example Figures 2 to 4 Differently, if the shell 211 is a hollow structure with openings 2111 formed at opposite ends, two end covers 212 may be provided, and the two end covers 212 are respectively covered with the openings 2111 at both ends of the shell 211.

[0053] The shell 211 of the embodiment of the present application can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The end cover 212 can also be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, etc. The material of the end cover 212 can be the same as or different from that of the shell 211.

[0054] The housing 21 of the embodiment of the present application can be in various shapes, such as a cylinder, a cuboid, etc. The shapes of the housing 211 and the end cover 212 match each other, for example, Figures 2 to 4 As shown, the shell 211 may be a rectangular parallelepiped structure, and the end cover 212 may be a rectangular plate structure matched with the shell 211 .

[0055] For the sake of convenience, the present application takes the housing 21 as a rectangular parallelepiped as an example. Figures 2 to 4 As shown, the housing 21 includes: a shell 211 , which is a hollow structure with one end open; and an end cover 212 , which is used to cover the opening 2111 of the shell 211 to form a closed cavity for placing the electrode assembly 22 .

[0056] In the battery cell 20, the housing 211 is used to accommodate the electrode assembly 22, and the number of electrode assemblies 22 in the housing 211 can be one or more according to actual use requirements. Figures 2 to 4 Taking the example that the battery cell 20 includes two electrode assemblies 22 arranged along the thickness direction X of the electrode assembly 22 , the embodiment of the present application is not limited thereto.

[0057] The electrode assembly 22 of the embodiment of the present application is a component where electrochemical reactions occur in the battery cell 20. The electrode assembly 22 can be a cylinder, a cuboid, etc. If the electrode assembly 22 is a cylindrical structure, the housing 211 can also be a cylindrical structure. If the electrode assembly 22 is a cuboid structure, the housing 211 can also be a cuboid structure.

[0058] For any electrode assembly 22, the electrode assembly 22 may include an electrode tab 222 and a main body 221. Figures 2 to 4 As shown, the electrode assembly 22 may include at least two pole tabs 222, and the at least two pole tabs 222 may include at least one cathode pole tab 222b and at least one anode pole tab 222a, the cathode pole tab 222b may be formed by stacking a portion of the cathode pole sheet that is not coated with the cathode active material layer, and the anode pole tab 222a may be formed by stacking a portion of the anode pole sheet that is not coated with the negative active material layer.

[0059] The housing 21 of the embodiment of the present application is also provided with an electrode terminal 214, which is used to be electrically connected to the electrode assembly 22 to output the electrical energy of the battery cell 20. Figures 2 to 4 As shown, the battery cell 20 may further include at least two electrode terminals 214. The at least two electrode terminals 214 may be disposed on the same wall or different walls of the battery cell 20. For example, Figures 2 to 4 In the example, the battery cell 20 includes two electrode terminals 214, and the two electrode terminals 214 are both arranged on the end cover 212. The end cover 212 is usually in the shape of a flat plate, and the two electrode terminals 214 are fixed on the flat surface of the end cover 212. The at least two electrode terminals 214 included in the battery cell 20 may include at least one cathode electrode terminal 214b and an anode electrode terminal 214a. The cathode electrode terminal 214b can be directly or indirectly electrically connected to the cathode tab 222b, for example, the cathode tab 222b of the electrode assembly 22 can be connected to the cathode electrode terminal 214b through a connecting member; the anode electrode terminal 214a can be directly or indirectly electrically connected to the anode tab 222a, for example, the anode tab 222a of the electrode assembly 22 is electrically connected to the anode electrode terminal 214a through another connecting member.

[0060] In the embodiment of the present application, the battery 10 may further include a busbar 15, which is used to electrically connect multiple battery cells 20, such as in parallel, in series, or in mixed connection. Specifically, the busbar 15 may realize electrical connection between multiple battery cells 20 by connecting the electrode terminals 214 of the battery cells 20. Furthermore, the busbar 15 may be fixed to the electrode terminals 214 of the battery cells 20 by welding.

[0061] In some embodiments, the battery 10 may further include an insulating component 16, which is used to fix the plurality of battery cells 20. For example, the insulating component 16 may include a bead structure, which may be used to limit the movement of the plurality of battery cells 20. Figures 2 to 4 As shown, the battery 10 may include a plurality of columns of battery cells 20 arranged along a length direction Y of the battery cells 20, for example, Figure 2Only two columns of battery cells 20 are shown; each column of battery cells 20 included in the battery 10 may include a plurality of battery cells 20 arranged along the thickness direction X of the battery cells 20, for example, Figure 2 Only two battery cells 20 included in each column of battery cells 20 are shown. An insulating component 16 is correspondingly provided for each column of battery cells 20. For example, the insulating component 16 may extend along the thickness direction X of the battery cells 20 to limit the movement of the corresponding at least one column of battery cells 20. Further, the same insulating component 16 may be provided between two adjacent columns of battery cells 20 to simultaneously limit the relative movement of the two adjacent columns of battery cells 20 to improve the structural stability of the battery 10.

[0062] In some embodiments, the insulating component 16 of the embodiment of the present application can also be used to support and / or fix the busbar component 15. In some embodiments, the insulating component 16 can also be used to electrically isolate the battery cell 20 from other components in the battery 10, for example, the insulating component 16 can be used to electrically isolate the battery cell 20 from the box of the battery 10.

[0063] In some embodiments, the battery 10 may also include other structures. For example, the battery 10 may also include a box, the interior of the box is a hollow structure, and a plurality of battery cells 20 are contained in the box. Specifically, the box of the embodiment of the present application may include at least two parts, respectively referred to as the first part and the second part, the first part and the second part are buckled together, and the plurality of battery cells 20 are connected in parallel or in series or in a mixed combination and placed in the box formed after the first part and the second part are buckled. The shape of the first part and the second part may be determined according to the shape of the battery module combination, for example, at least one of the first part and the second part has an opening. For example, the first part and the second part may both be hollow cuboids and each has only one face as an opening face, the opening of the first part and the opening of the second part are arranged oppositely, and the first part and the second part are buckled together to form a box with a closed chamber. For another example, only one of the first part and the second part may be a hollow cuboid with an opening, and the other may be plate-shaped to cover the opening. For example, here we take the second part as a hollow cuboid with only one open face, and the first part as a plate. Then the first part covers the opening of the second part to form a box with a closed chamber, which can be used to accommodate multiple battery cells 20.

[0064] The battery 10 of the embodiment of the present application may include multiple components. In order to improve the structural stability of the battery 10 , a limiting component 13 may be provided in the battery 10 to limit the positions of other components in the battery 10 .

[0065] Specifically, the battery 10 includes: a first component 11; a second component 12; and a limiting component 13, the limiting component 13 is located on one side of the first component 11 and the second component 12 along the first direction Z, the limiting component 13 includes a first limiting portion 131 and a second limiting portion 132 connected to each other, the first limiting portion 131 is fixedly connected to the first component 11 along the first direction Z, and the second limiting portion 132 is used to limit the movement of the second component 12 along the first direction Z.

[0066] In the embodiment of the present application, the first component 11 may be any component in the battery 10, and the second component 12 may also be any component in the battery 10. For example, the first component 11 and the second component 12 may be different components in the battery 10, so that the positions of the first component 11 and the second component 12 are limited by the limiting component.

[0067] Specifically, the first limiting portion 131 is fixedly connected to the first component 11 along the first direction Z, so that the limiting portion 13 can be relatively fixed to the first component 11 along the first direction Z to limit the relative position between the limiting portion 13 and the first component 11 along the first direction Z; in addition, the limiting portion 13 is located on one side of the first component 11 and the second component 12 along the first direction Z, that is, the first component 11 and the second component 12 are located on the same side of the limiting portion 13, and the two are arranged along the first direction Z with the limiting portion 13, and the second limiting portion 132 connected to the first limiting portion 131 can be used to limit the movement of the second component 12 along the first direction Z. In this way, even if a connecting member for fixing is not provided between the second limiting portion 132 and the second component 12, the movement of the second component 12 along the first direction Z can be limited by the second limiting portion 132, thereby improving the structural stability of the battery 10, and the limiting portion 13 has a simple structure and is easy to implement, which can reduce the influence of the limiting portion 13 on the processing and assembly efficiency of the battery 10.

[0068] In some embodiments, the first component 11 includes a busbar component 15, and the second component 12 includes an insulating component 16. Specifically, the busbar component 15 is electrically connected to the electrode terminal 214 of the battery cell 20, and the first component 11 is fixedly connected to the first limiting portion 131 of the limiting component 13 along the first direction Z, so that the first limiting portion 131 and the busbar component 15 can be fixedly connected along the first direction Z, and the first limiting portion 131 and the battery cell 20 can be fixedly connected along the first direction Z, that is, the first limiting portion 131 can limit the movement of the busbar component 15 along the first direction Z, and can also limit the movement of the battery cell 20 along the first direction Z.

[0069] In addition, the limiting component 13 is located on one side of the first component 11 and the second component 12 along the first direction Z. For example, the first direction Z is taken as the height direction Z of the battery cell 20. Since the second limiting portion 132 is connected to the first limiting portion 131, the second limiting portion 132 can be used to limit the movement of the insulating component 16 along the first direction Z. For example, the second limiting portion 132 can be arranged with the second component 12 along the first direction Z and abut against each other. Even if there is no connector for fixing between the second limiting portion 132 and the second component 12, the movement of the insulating component 16 along the first direction Z can be limited by the second limiting portion 132. For example, the insulating component 16 can be limited to be warped, deformed or misaligned along the first direction Z, and the overall size deviation of the insulating component 16 can be reduced, and the wear between the insulating component 16 and other parts can be reduced. In addition, the insulating component 16 can be used to limit and fix the positions of multiple battery cells 20. Therefore, the second limiting portion 132 can limit the positions of multiple battery cells 20 by limiting the positions of the insulating component 16.

[0070] In some embodiments, the first component 11 and the second component 12 may also be other components of the battery 10, which are not described one by one here. For example, the first component 11 may include a battery cell 20, and the second component 12 may include an insulating component 16. The position of the insulating component 16 and the position of the battery cell 20 may also be limited by the limiting component 13. For another example, the first component 11 may include any one of the busbar components 15 for connecting two battery cells 20, and the second component 12 may include another busbar component 15 for connecting another two battery cells 20. The position between the two busbar components 15 may be limited by the limiting component 13.

[0071] The limiting component 13 of the embodiment of the present application will be described below in conjunction with the accompanying drawings. For ease of description, the embodiment of the present application is mainly described by taking the example that the first component 11 includes the current collecting component 15 and the second component 12 includes the insulating component 16.

[0072] It should be understood that the shape and size of the limiting component 13 of the embodiment of the present application can be flexibly set according to the actual application to suit different application scenarios. For example, the limiting component 13 can be a plate-like structure to save the space occupied by the limiting component 13, thereby improving the space utilization of the battery 10. For another example, the limiting component 13 can be a circular plate-like structure or a rectangular plate-like structure for easy processing. For another example, the size of the limiting component 13 can be set according to the size of the first component 11 and the second component 12. The size of the limiting component 13 should not be too large to save the space occupied by the limiting component 13, and the size of the limiting component 13 should not be too small to improve the effect of the limiting component 13 in limiting the movement of the first component 11 and the second component 12, thereby improving the structural stability of the battery 10.

[0073] In some embodiments, the material and processing method of the limiting component 13 can be flexibly set according to the actual application. For example, the limiting component 13 generally adopts a material with a certain deformation ability to meet the processing requirements. For another example, the limiting component 13 can be made of a thermoplastic material and formed by a vacuum forming process, which has low cost, fast molding cycle, short production cycle, and can improve processing efficiency. For another example, the material of the limiting component 13 includes polypropylene PP and / or polycarbonate (PC) for easy processing.

[0074] The first limiting portion 131 of the limiting component 13 will be described below with reference to the accompanying drawings. Figure 5 A schematic top view of a partial structure of a battery 10 according to an embodiment of the present application is shown. Figure 5 Can be Figure 2 The battery 10 shown is a schematic diagram of a partial structure of any two battery cells 20 and an insulating component 16 . Figure 6 A partial cross-sectional schematic diagram of a battery 10 according to an embodiment of the present application is shown, for example, Figure 6 Can be along Figure 5 The schematic cross-sectional view along the AA' direction is shown as a partial view.

[0075] In the embodiment of the present application, the first limiting portion 131 is fixedly connected to the first component 11 along the first direction Z, wherein the fixed connection may mean that the first limiting portion 131 and the first component 11 cannot move relative to each other along the first direction Z after being connected, but the first limiting portion 131 and the first component 11 may move relative to each other along other directions, for example, the first limiting portion 131 and the first component 11 may rotate relative to each other in a direction perpendicular to the first direction Z; or, the first limiting portion 131 and the first component 11 may not be able to move relative to each other along other directions, and the embodiment of the present application is not limited to this.

[0076] For example, during the installation of the limiting component 13, the first limiting portion 131 may correspond to the first component 11, and the second limiting portion 132 may correspond to the second component 12. In this way, after the first limiting portion 131 is fixedly connected to the first component 11, the second limiting portion 132 can limit the second component 12 without moving the limiting component 13. Alternatively, the first limiting portion 131 may correspond to the first component 11, and the second limiting portion 132 may not correspond to the second component 12. After the first limiting portion 131 is fixedly connected to the first component 11, the limiting component 13 is rotated so that the second limiting portion 132 is set corresponding to the second component 12, thereby achieving the second limiting portion 132 limiting the second component 12.

[0077] It should be understood that the fixed connection of the embodiment of the present application may include a detachable connection or a non-detachable connection. In some embodiments, the first limit portion 131 and the first component 11 are non-detachably connected to improve the structural stability between the first limit portion 131 and the first component 11. Specifically, the first limit portion 131 and the first component 11 can be connected in a detachable manner according to actual applications to be suitable for various application scenarios. For example, the first limit portion 131 and the first component 11 can be connected by welding, such as laser welding or ultrasonic welding. For another example, the first limit portion 131 and the first component 11 can be connected by an adhesive.

[0078] In some embodiments, the first position limiting portion 131 is detachably connected to the first component 11 to facilitate disassembly and assembly. Specifically, the first position limiting portion 131 and the first component 11 can be connected in any detachable manner according to actual applications to be suitable for various application scenarios. For example, the first position limiting portion 131 and the first component 11 can be connected by bolts, for example, the first position limiting portion 131 can have a through hole, and the bolt extends along the first direction Z, passes through the through hole and is connected to at least a portion of the first component 11. For another example, the first position limiting portion 131 and the first component 11 can be riveted, for example, rivets or other connectors can be used to achieve riveting between the first position limiting portion 131 and the first component 11.

[0079] In the embodiment of the present application, the first position limiting portion 131 and the first component 11 may be connected in other connection modes. For example, the first position limiting portion 131 includes a protruding structure 1311 protruding toward the first component 11, and the first component 11 includes a groove structure 111 with an opening toward the first position limiting portion 131, and the protruding structure 1311 is accommodated in the groove structure 111 and has an interference fit with the groove structure 111. Specifically, Figure 5 and Figure 6As shown, the limiting component 13 is located on one side of the first component 11 along the first direction Z. The first limiting portion 131 of the limiting component 13 includes a protruding structure 1311 that protrudes toward the first component 11. The first component 11 includes a groove structure 111 that opens toward the first limiting portion 131. Therefore, when the protruding structure 1311 is accommodated in the groove structure 111 and has an interference fit with the groove structure 111, the first limiting portion 131 and the first component 11 can be fixed along the first direction Z. The structure is simple and easy to process and assemble.

[0080] It should be understood that the shape and size of the protrusion structure 1311 of the embodiment of the present application can be flexibly set according to the actual application, and the shape and size of the groove structure 111 are related to the protrusion structure 1311, so that the protrusion structure 1311 can be accommodated in the groove structure 111, thereby achieving the fixation between the first limiter 131 and the first component 11 along the first direction Z. For example, the shape of the protrusion structure 1311 can be the same as the shape of the groove structure 111, so that the protrusion structure 1311 can be accommodated in the groove structure 111. For another example, the shape of the protrusion structure 1311 can be cylindrical or rectangular, so as to facilitate processing.

[0081] Figure 7 The schematic partial cross-sectional view of the first limiting portion 131 of the limiting component 13 of the embodiment of the present application is shown. Figure 7 The partial cross-sectional diagram of the first limiting portion 131 shown can be Figure 6 A partial enlarged view of the first limiting portion 131.

[0082] In some embodiments, from the end of the protrusion structure 1311 close to the first component 11 to the end away from the first component 11, the size of at least a portion of the protrusion structure 1311 along the second direction Y gradually decreases, and the second direction Y is perpendicular to the first direction Z. Specifically, Figure 7 As shown, from the end of the protrusion structure 1311 close to the first component 11 to the end away from the first component 11, the protrusion structure 1311 has at least a partial area that satisfies: the size along the second direction Y is gradually reduced; correspondingly, the size of the groove structure 111 is adapted to the protrusion structure 1311, for example, also in the direction from the end of the protrusion structure 1311 close to the first component 11 to the end away from the first component 11, the size of the corresponding area of ​​the groove structure 111 along the second direction Y can be set to gradually decrease or remain unchanged. In this way, when the protrusion structure 1311 is accommodated in the groove structure 111, the protrusion structure 1311 can be interference-fitted with the groove structure 111 to achieve the fixation between the first limiting portion 131 and the first component 11 along the first direction Z.

[0083] It should be understood that the second direction Y of the embodiment of the present application is perpendicular to the first direction Z. For example, in the embodiment of the present application, the second direction Y is taken as the length direction Y of the battery cell 20, but the second direction can also be other directions perpendicular to the first direction Z. The embodiment of the present application is not limited to this.

[0084] In some embodiments, to facilitate processing, such as Figure 7 As shown, the size of a local area of ​​the protrusion structure 1311 close to one end of the first component 11 along the second direction Y can be set to be smaller, so that the protrusion structure 1311 can smoothly enter the groove structure 111; from the local area to the area away from the end of the first component 11, the size along the second direction Y can be set to gradually decrease, so that the protrusion structure 1311 and the groove structure 111 have an interference fit.

[0085] In some embodiments, the difference between the maximum dimension L2 and the minimum dimension L1 of the protrusion structure 1311 along the second direction Y is less than or equal to 1 mm, so that the protrusion structure 1311 can be quickly and smoothly accommodated in the groove structure 111; in addition, the difference L2-L1 between the maximum dimension L2 and the minimum dimension L1 of the protrusion structure 1311 along the second direction Y can also be greater than zero, so as to achieve an interference fit between the protrusion structure 1311 and the groove structure 111. For example, the difference L2-L1 between the maximum dimension L2 and the minimum dimension L1 of the protrusion structure 1311 along the second direction Y can be set to 1 mm, 0.9 mm, 0.8 mm, 0.7 mm, 0.6 mm, 0.5 mm, 0.4 mm, 0.3 mm, 0.2 mm or 0.1 mm.

[0086] It should be understood that Figure 7 As shown, the maximum dimension L2 of the protruding structure 1311 along the second direction Y of the embodiment of the present application is usually closer to the first component 11 than the minimum dimension L1; in addition, the maximum dimension L2 of the protruding structure 1311 along the second direction Y is usually at a distance from the end of the protruding structure 1311 close to the first component 11, that is, the maximum dimension L2 of the protruding structure 1311 along the second direction Y is usually not equal to the dimension L3 of the end area of ​​the protruding structure 1311 close to the first component 11. For example, the maximum dimension L2 of the protruding structure 1311 along the second direction Y is usually larger than the dimension L3 of the end area of ​​the protruding structure 1311 close to the first component 11, so that the protruding structure 1311 can enter the groove structure 111 more smoothly from the end area close to the first component 11, so as to facilitate installation.

[0087] It should be understood that the protrusion structure 1311 of the embodiment of the present application can be a solid structure or a hollow structure. In some embodiments, the protrusion structure 1311 can be a solid structure to improve the strength and stability of the protrusion structure 1311, thereby improving the stability between the first limit portion 131 and the first component 11.

[0088] In some embodiments, the protruding structure 1311 may be a hollow structure. For example, the protruding structure 1311 is a groove of the first limiting portion 131 that is recessed toward the first component 11, which is convenient for processing and can reduce the weight of the protruding structure 1311, that is, reduce the weight of the limiting component 13, and further reduce the weight of the battery 10.

[0089] The second limiting portion 132 of the limiting component 13 will be described below with reference to the accompanying drawings. Figure 8 The structure diagram of the limiting component 13 in the embodiment of the present application is shown. Figure 8 Can be Figures 2 to 7 A schematic structural diagram of the limiting component 13 is shown. Figures 9 to 11 The schematic diagrams of possible structures of the limiting components 13 of other embodiments of the present application are respectively shown. For example, Figures 9 to 11 The limiting member 13 shown can replace the Figure 8 The limiting component 13 is shown.

[0090] In the embodiment of the present application, the second limit portion 132 and the first limit portion 131 form a step structure, that is, the second limit portion 132 and the first limit portion 131 are not located in the same plane and are not arranged flush. In this way, the positions of the first limit portion 131 and the second limit portion 132 can be reasonably adjusted according to the difference in height of the first component 11 and the second component 12 along the first direction Z. For example, if the first component 11 includes a conduit component 15 and the second component 12 includes an insulating component 16; along the first direction Z, the insulating component 16 usually protrudes from the conduit component 15, and the first limit portion 131 and the second limit portion 132 are arranged to form a step structure, which can adapt to the protruding insulating component 16 and facilitate the assembly of the battery 10.

[0091] It should be understood that along the first direction Z, the positions of the first limit portion 131 and the second limit portion 132 can be flexibly set according to actual applications. For example, the positions of the first limit portion 131 and the second limit portion 132 can be reasonably set according to the height difference between the first component 11 and the second component 12 in the first direction Z. Figure 8 As shown, along the first direction Z, the second limiting portion 132 may be higher than the first limiting portion 131; for example, Fig. 9 As shown, along the first direction Z, the second limiting portion 132 may be lower than the first limiting portion 131 , but the embodiments of the present application are not limited thereto.

[0092] In some embodiments, the second limiting portion 132 and the first limiting portion 131 may not be configured as a step structure. Fig.10 As shown, the first limiting portion 131 may also be arranged flush with the second limiting portion 132 to facilitate processing and assembly.

[0093] In the embodiment of the present application, the second limiting portion 132 is provided with a reinforcing structure 1321 to improve the structural strength and stability of the second limiting portion 132. Figure 8 and Fig.11 As shown, considering that the second limiting portion 132 and the second component 12 may be fixed without a connecting member, the first limiting portion 131 and the first component 11 may be fixedly connected, and the first limiting portion 131 and the second limiting portion 132 are connected, and the second limiting portion 132 is arranged to abut against the second component 12, so that the movement of the second component 12 along the first direction Z can be limited. Therefore, by arranging the reinforcing structure 1321, the structural strength of the second limiting portion 132 can be improved, and the difficulty of the second limiting portion 132 to deform along the first direction Z can be increased, so that the movement of the second component 12 along the first direction Z can be stably limited, so as to improve the limiting effect of the limiting component 13.

[0094] It should be understood that the reinforcing structure 1321 of the embodiment of the present application can be implemented in a variety of ways to be suitable for different scenarios. For example, the reinforcing structure 1321 includes a protrusion of the second limiting portion 132 protruding in the direction away from the second component 12, which has a simple structure and is easy to implement. For another example, when the reinforcing structure 1321 is a protrusion of the second limiting portion 132, the reinforcing structure 1321 can be a hollow structure or a solid structure. If the reinforcing structure 1321 is a hollow structure, for example, the reinforcing structure 1321 includes a protrusion formed by the second limiting portion 132 being recessed in the direction away from the second component 12, it can increase the structural strength of the second limiting portion 132 of the limiting component 13, and can also reduce the weight of the limiting component 13 compared to the solid structure. If the reinforcing structure 1321 is a solid structure, the structural strength and stability of the second limiting portion 132 of the limiting component 13 can be increased.

[0095] In the embodiment of the present application, the number of the reinforcing structures 1321 included in the second position limiting portion 132 can be flexibly set according to the actual application. For example, the number of the reinforcing structures 1321 can be reasonably set according to the size of the second position limiting portion 132. Specifically, if the size of the second position limiting portion 132 is large, multiple reinforcing structures 1321 can be set to improve the structural stability; if the size of the second position limiting portion 132 is small, a small number of reinforcing structures 1321 can be set to reasonably use the space. For another example, the number of the reinforcing structures 1321 can also be reasonably set according to the structural strength requirements of the second component 12. Specifically, if the second component 12 is severely deformed and displaced during the use of the battery 10, the second position limiting portion 132 can include multiple reinforcing structures 1321 to improve the structural stability and reduce the movement of the second component 12; on the contrary, if the second component 12 is less deformed and displaced, the second position limiting portion 132 can include a small number of reinforcing structures 1321 to reduce the weight of the position limiting component 13.

[0096] In some embodiments, the second limiting portion 132 is provided with a plurality of reinforcing structures 1321 to increase the structural strength of the limiting component 13, thereby improving the structural stability of the limiting component 13 and the second component 12, and thereby improving the structural stability of the battery 10. Fig.11 As shown, the second limiting portion 132 may include a plurality of reinforcing structures 1321 arranged along a third direction X, wherein the third direction X is perpendicular to the first direction Z. For example, the embodiment of the present application takes the third direction X as the thickness direction X of the battery cell 20 as an example, but the embodiment of the present application is not limited thereto.

[0097] In some embodiments, the second limiting portion 132 may include a reinforcing structure 1321 to facilitate processing.

[0098] In the embodiment of the present application, the first limiting portion 131 is fixedly connected to the first component 11 along the first direction Z, so that the limiting portion 13 can be relatively fixed to the first component 11 along the first direction Z to limit the relative position between the limiting portion 13 and the first component 11 along the first direction Z; in addition, the limiting portion 13 is located on one side of the first component 11 and the second component 12 along the first direction Z, and the second limiting portion 132 connected to the first limiting portion 131 can be used to limit the movement of the second component 12 along the first direction Z. In this way, even if a connecting member for fixing is not provided between the second limiting portion 132 and the second component 12, the movement of the second component 12 along the first direction Z can be limited by the second limiting portion 132, thereby improving the structural stability of the battery 10, and the limiting portion 13 has a simple structure and is easy to implement, which can reduce the influence of the limiting portion 13 on the processing and assembly efficiency of the battery 10.

[0099] Further, the first limiting portion 131 includes a protruding structure 1311 protruding toward the first component 11, the first component 11 includes a groove structure 111 opening toward the first limiting portion 131, and the protruding structure 1311 is accommodated in the groove structure 111 and has an interference fit with the groove structure 111. The protruding structure 1311 can be a hollow structure. The second limiting portion 132 forms a step structure with the first limiting portion 131. The second limiting portion 132 is provided with a reinforcement structure 1321.

[0100] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that: include: A first component (11); A second component (12); A limiting component (13), the limiting component (13) being located on one side of the first component (11) and the second component (12) along a first direction, the limiting component (13) comprising a first limiting portion (131) and a second limiting portion (132) connected to each other, the first limiting portion (131) being fixedly connected to the first component (11) along the first direction, and the second limiting portion (132) being used to limit the movement of the second component (12) along the first direction.

2. The battery according to claim 1, characterized in that The first limiting portion (131) is detachably connected to the first component (11).

3. The battery according to claim 1 or 2, characterized in that: The first limiting portion (131) comprises a protruding structure (1311) protruding toward the first component (11), the first component (11) comprises a groove structure (111) opening toward the first limiting portion (131), and the protruding structure (1311) is accommodated in the groove structure (111) and is interference-fitted with the groove structure (111).

4. The battery according to claim 3, characterized in that From the end of the protruding structure (1311) close to the first component (11) to the end away from the first component (11), the size of at least a part of the protruding structure (1311) along the second direction gradually decreases, and the second direction is perpendicular to the first direction.

5. The battery according to claim 4, characterized in that The difference between the maximum dimension and the minimum dimension of the protruding structure (1311) along the second direction is less than or equal to 1 mm.

6. The battery according to any one of claims 3 to 5, characterized in that The protruding structure (1311) is a hollow structure.

7. The battery according to any one of claims 1 to 6, characterized in that The second limiting portion (132) and the first limiting portion (131) form a step structure.

8. The battery according to any one of claims 1 to 7, characterized in that The second limiting portion (132) is provided with a reinforcement structure (1321).

9. The battery according to claim 8, characterized in that The reinforcing structure (1321) comprises a protrusion of the second limiting portion (132) protruding away from the second component (12).

10. The battery according to claim 8 or 9, characterized in that: The second limiting portion (132) is provided with a plurality of the reinforcing structures (1321).

11. The battery according to any one of claims 1 to 10, characterized in that The battery comprises: A plurality of battery cells (20); A busbar component (15) for electrically connecting the plurality of battery cells (20), wherein the first component (11) includes the busbar component (15); An insulating component (16) is used to fix the plurality of battery cells (20), and the second component (12) includes the insulating component (16).

12. The battery according to any one of claims 1 to 11, characterized in that The material of the limiting component (13) includes polypropylene (PP) and / or polycarbonate (PC).

13. An electrical equipment, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 12, wherein the battery is used to supply power to the electrical device.

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