Battery and electric equipment

Abstract

The embodiment of the utility model provides a battery and electric equipment. The battery includes a battery cell and a first support member. The battery monomer comprises a shell, a first electrode terminal, an electrode assembly, a first adapter and a first insulating part, the shell comprises a first wall, the first electrode terminal is arranged on the first wall, the electrode assembly is arranged in the shell, one end, facing the first wall, of the electrode assembly is provided with a first tab, and the first adapter is electrically connected with the first electrode terminal and the first tab; the first insulator is disposed between the first wall and the first adapter. The first supporting part is arranged on one side, away from the interior of the battery monomer, of the first wall, and the projection of the first supporting part is overlapped with one end, away from the first electrode terminal, of the first adapter along the thickness direction of the first wall. According to the technical scheme provided by the invention, the reliability of the battery can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

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

[0003] During the manufacturing process of batteries, the reliability of batteries is an issue that cannot be ignored. Therefore, how to improve the reliability of batteries is a technical problem that needs to be solved urgently in battery technology. Utility Model Content

[0004] The present application provides a battery and an electrical device, which can improve the reliability of the battery.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a battery, which includes a battery cell and a first supporting component. The battery cell includes a housing, a first electrode terminal, an electrode assembly, a first adapter and a first insulating component. The housing includes a first wall, the first electrode terminal is arranged on the first wall, the electrode assembly is arranged in the housing, the end of the electrode assembly facing the first wall has a first pole ear, the first adapter electrically connects the first electrode terminal and the first pole ear, and the first insulating component is arranged between the first wall and the first adapter. The first supporting component is arranged on the side of the first wall away from the interior of the battery cell, and along the thickness direction of the first wall, the projection of the first supporting component overlaps with the end of the first adapter away from the first electrode terminal.

[0007] According to the battery of the embodiment of the present application, the first supporting component is arranged on the side of the first wall away from the interior of the battery cell, and the projection of the first supporting component overlaps with the end of the first adapter away from the first electrode terminal. After the battery cell thermal runaway and the high temperature melts the first insulating component, the first supporting component constrains the first wall to deform toward the outside of the battery cell. Therefore, the space between the first adapter and the first wall changes less, and the gas inside the battery cell will look for a passage with a larger space (for example, the deformation area of ​​the outer shell, the pressure relief area of ​​the pressure relief mechanism, etc.). There is less gas passing between the first adapter and the first wall, which can reduce the risk of gas impacting the first adapter to deform, thereby reducing the risk of short circuit between the first adapter and the first wall, thereby improving the reliability of the battery.

[0008] According to some embodiments of the present application, along the thickness direction of the first wall, a projection of the first supporting component at least partially overlaps with a projection of the first electrode tab.

[0009] In the above scheme, the projection of the first supporting member at least partially overlaps with the projection of the first pole ear, and the first supporting member and the first pole ear can have a large overlapping area. After the battery cell thermal runaway and the first insulating member thermally melts, the risk of the first pole ear and the first adapter deforming toward the first wall can be reduced while constraining the first wall to deform toward the outside of the battery cell, thereby reducing the risk of short circuit between the first pole ear and the first adapter and the first wall.

[0010] According to some embodiments of the present application, the first electrode tab is spaced apart from the first electrode terminal along a first direction, and the first direction is perpendicular to a thickness direction of the first wall.

[0011] In the above scheme, the first pole ear is spaced apart from the first electrode terminal, which can reduce the risk of interference between the first pole ear and the first electrode terminal, and can reduce the space occupied by the first pole ear and the first electrode terminal in the thickness direction of the first wall, thereby improving the space utilization inside the battery cell in the thickness direction of the first wall.

[0012] According to some embodiments of the present application, the first adapter includes a first connecting portion and a second connecting portion connected in sequence along a first direction, the first connecting portion is connected to the first electrode terminal, the second connecting portion is connected to the first electrode ear, and along the thickness direction of the first wall, the projection of the first supporting part at least partially overlaps with the projection of the second connecting portion.

[0013] In the above scheme, the first connecting part and the second connecting part respectively connect the first electrode terminal and the first pole lug, the projection of the first supporting member at least partially overlaps with the projection of the second connecting part, and the first supporting member constrains the area of ​​the first wall corresponding to the second connecting part and limits the deformation of the area toward the outside of the battery cell, which can reduce the risk of the first adapter and the first pole lug moving toward the first wall and short-circuiting due to contact with the first wall.

[0014] According to some embodiments of the present application, along the thickness direction of the first wall, a projection of the second connection portion does not overlap with a projection of the first electrode terminal.

[0015] In the above solution, the projection of the second connection portion does not overlap with the projection of the first electrode terminal, which can reduce the risk of interference between the second connection portion and the first electrode terminal.

[0016] According to some embodiments of the present application, the first wall includes a main body and a first convex portion, the first convex portion protrudes from the inner surface of the main body, a first recess is formed on the outer surface of the first wall at a position corresponding to the first convex portion, and a portion of the first electrode terminal is located in the first recess; along the first direction, the projection of the second connecting portion at least partially overlaps with the projection of the first convex portion.

[0017] In the above scheme, a portion of the first electrode terminal is located in the first recess, and the first electrode terminal is arranged toward the interior of the battery cell, which can reduce the size of the first electrode terminal protruding from the outer surface of the first wall, thereby reducing the overall height of the battery cell, so as to improve the energy density of the battery cell.

[0018] According to some embodiments of the present application, the first supporting component is pressed against the first wall.

[0019] In the above solution, the first supporting member presses against the first wall, and can exert a force on the first wall to further restrict the first wall from deforming toward the outside of the battery cell.

[0020] According to some embodiments of the present application, the battery cell also includes a second electrode terminal and a second adapter, the second electrode terminal is arranged on the first wall, the end of the electrode assembly facing the first wall also has a second pole ear, the second adapter electrically connects the second electrode terminal and the second pole ear, and the first insulating member is also arranged between the first wall and the second adapter; the battery also includes a second supporting component, the second supporting component is arranged on the side of the first wall away from the interior of the battery cell, and along the thickness direction of the first wall, the projection of the second supporting component overlaps with the end of the second adapter away from the second electrode terminal.

[0021] In the above scheme, the second supporting component is configured to constrain the area of ​​the first wall corresponding to the second adapter to limit the deformation of the area toward the outside of the battery cell, thereby reducing the risk of the second adapter moving toward the first wall and contacting the first wall, thereby reducing the risk of short circuit between the positive and negative electrodes and improving the reliability of the battery.

[0022] According to some embodiments of the present application, the first electrode terminal and the second electrode terminal are spaced apart along a first direction, and the first direction is perpendicular to the thickness direction of the first wall; along the first direction, the first electrode terminal and the second electrode terminal are arranged between the first supporting part and the second supporting part.

[0023] In the above scheme, the first electrode terminal and the second electrode terminal are arranged between the first supporting component and the second supporting component, rationally utilizing the space of the first wall in the first direction, and at the same time, other components (such as injection holes, pressure relief mechanisms, etc.) can be arranged between the first electrode terminal and the second electrode terminal.

[0024] According to some embodiments of the present application, the rigidity of the first supporting component is greater than the rigidity of the first wall.

[0025] In the above solution, the rigidity of the first supporting component is greater than that of the first wall, and the first supporting component has a strong ability to resist deformation, and can restrict the first wall from deforming toward the outside of the battery cell.

[0026] According to some embodiments of the present application, along the thickness direction of the first wall, a projection of the first supporting member and a projection of the first electrode terminal do not overlap.

[0027] In the above solution, the projection of the first supporting member does not overlap with the projection of the first electrode terminal, which can reduce the risk of interference between the first supporting member and the first electrode terminal.

[0028] According to some embodiments of the present application, there are multiple battery cells, and the multiple battery cells are stacked along the second direction, and the second direction is perpendicular to the thickness direction of the first wall; along the thickness direction of the first wall, the projection of the first support component overlaps with the end of the first adapter of the multiple battery cells away from the first electrode terminal.

[0029] In the above scheme, multiple battery cells are stacked along the second direction to facilitate the arrangement of more battery cells; the first support component is arranged corresponding to the multiple battery cells, so that multiple battery cells share one first support component, which has a simple structure and reduces parts.

[0030] According to some embodiments of the present application, along the second direction, a projection of the first supporting component in the thickness direction of the first wall covers a projection of the first wall in the thickness direction of the first wall.

[0031] In the above solution, the first supporting component covers the entire first wall in the second direction, so that the first supporting component has a larger connection area with the first wall in the second direction, thereby having a better restraining effect on the first wall.

[0032] According to some embodiments of the present application, a thickness of the first supporting component is greater than a thickness of the first wall.

[0033] In the above solution, the thickness of the first supporting component is greater than the thickness of the first wall, and the first supporting component has good anti-deformation ability, so that the first supporting component has a good restraining effect on the first wall.

[0034] According to some embodiments of the present application, the battery cell further includes a pressure relief mechanism, and the pressure relief mechanism is disposed on the first wall.

[0035] In the above solution, the pressure relief mechanism is arranged on the first wall. When the battery cell thermally runs away, when the pressure relief mechanism releases pressure, the high-temperature and high-pressure gas can flow toward the pressure relief mechanism, and cooperate with the first supporting component to further reduce the risk of the first wall deforming toward the outside of the battery cell.

[0036] In a second aspect, an embodiment of the present application further provides an electrical device, which includes a battery as provided in any of the above embodiments, and the battery is used to provide electrical energy.

[0037] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0040] Figure 2 An exploded schematic diagram of a battery provided in some embodiments of the present application;

[0041] Figure 3 A three-dimensional diagram of a partial structure of a battery provided in some embodiments of the present application;

[0042] Figure 4 A schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0043] Figure 5 for Figure 4 Cross-sectional view in the AA direction;

[0044] Figure 6 for Figure 5 A partial enlarged view of point B;

[0045] Figure 7 for Figure 5 A partial enlarged view of point C.

[0046] Icon: 100-battery; 10-box; 11-first sub-box; 12-second sub-box; 20-battery cell; 21-housing; 211-housing; 212-end cover; 213-first wall; 2131-body; 2132-first convex part; 2133-first concave part; 2134-second convex part; 2135-second concave part; 22-electrode assembly; 221-first pole ear; 222-second pole ear; 23a-first electrode terminal ; 23b-second electrode terminal; 24-first adapter; 241-first connecting part; 242-second connecting part; 25-first insulating member; 26-second adapter; 261-third connecting part; 262-fourth connecting part; 27-pressure relief mechanism; 30-first supporting member; 40-second supporting member; 200-controller; 300-motor; 1000-vehicle; X-first direction; Y-second direction; Z-thickness direction of the first wall. DETAILED DESCRIPTION

[0047] 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 and completely 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.

[0048] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning 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.

[0049] 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.

[0050] 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 fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of 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.

[0051] 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.

[0052] The term "multiple" as used in this 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).

[0053] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0054] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0055] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0056] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0057] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0058] The battery cells may be, but are not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc.

[0059] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0060] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0061] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.

[0062] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, stainless steel, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium with surface silver plating can be used. The composite current collector may include a polymer material base and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0063] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used.

[0064] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0065] As an example, the negative electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used.

[0066] In some embodiments, the negative electrode current collector has two surfaces opposite to each other in its thickness direction, and the negative electrode active material is disposed on any one or both of the two opposite surfaces of the negative electrode current collector.

[0067] As an example, the negative electrode active material may adopt the negative electrode active material for the battery known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials and lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0068] In some embodiments, the separator is a separator. The present application has no particular limitation on the type of separator, and any known separator with a porous structure having good chemical stability and mechanical stability can be selected.

[0069] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions. The separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes.

[0070] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.

[0071] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0072] In some embodiments, the electrode assembly is a laminate structure.

[0073] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, or a composite metal housing (such as a copper-aluminum composite housing).

[0074] In some embodiments, the housing includes an end cap and a shell, the shell is provided with an opening, and the end cap closes the opening to form a closed space for accommodating substances such as the electrode assembly and the electrolyte. The shell may be provided with one or more openings. One or more end caps may also be provided.

[0075] In some embodiments, at least one electrode terminal is disposed on the housing, and the electrode terminal is electrically connected to the electrode tab of the electrode assembly. The electrode terminal can be connected to the electrode tab through an adapter. The electrode terminal can be disposed on the end cap or on the housing.

[0076] In some embodiments, an explosion-proof valve is provided on the housing, and the explosion-proof valve is used to release the internal pressure of the battery cell.

[0077] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal prismatic battery, such as a hexagonal prismatic battery.

[0078] The development of battery technology must take into account many design factors at the same time, such as energy density, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery reliability must also be considered.

[0079] In some embodiments, a battery cell includes a housing, an electrode terminal, an electrode assembly, and a tab. The housing includes a first wall. The electrode terminal is disposed on the first wall. The electrode assembly has a tab, which is disposed toward the first wall. The adapter electrically connects the electrode terminal and the tab. Since the adapter electrically connects the electrode terminal and the tab, the end of the adapter away from the electrode terminal is more susceptible to stress deformation than other areas. When the battery cell is in thermal runaway, a large amount of gas is generated inside the battery cell, and the gas pressure inside the battery cell increases, accompanied by a large amount of heat. The gas pressure causes the first wall to deform greatly toward the outside of the battery cell. Due to the heat, the first insulating member between the first wall and the adapter melts, so that the distance between the adapter and the first wall increases. The gas can impact the adapter and cause the end of the adapter away from the electrode terminal to deform toward the first wall, which easily causes the adapter to short-circuit with the first wall, thereby causing the positive and negative electrodes to short-circuit, making the battery less reliable.

[0080] In view of this, in order to solve the problem that the first wall deforms toward the outside of the battery cell, resulting in a short circuit between the positive and negative electrodes, and thus making the reliability of the battery low, the present application provides a technical solution, wherein the battery comprises a battery cell and a first supporting component, the battery cell comprises an outer shell, a first electrode terminal, an electrode assembly, a first adapter and a first insulating component, the outer shell comprises a first wall, the first electrode terminal is arranged on the first wall, the electrode assembly is arranged in the outer shell, the end of the electrode assembly facing the first wall has a first pole ear, the first adapter electrically connects the first electrode terminal and the first pole ear, and the first insulating component is arranged between the first wall and the first adapter. The first supporting component is arranged on the side of the first wall away from the inside of the battery cell, and along the thickness direction of the first wall, the projection of the first supporting component overlaps with the end of the first adapter away from the first electrode terminal. The battery cell can reduce the risk of a short circuit between the first adapter and the first wall, thereby improving the reliability of the battery.

[0081] In such a battery, the first supporting component is arranged on the side of the first wall facing away from the interior of the battery cell. Along the thickness direction of the first wall, the projection of the first supporting portion overlaps with the end of the first adapter away from the first electrode terminal. After the battery cell thermally runs away and the first insulating component is melted by high temperature, the first supporting component constrains the first wall to deform toward the outside of the battery cell. Therefore, the space between the first adapter and the first wall changes less, and the gas inside the battery cell will look for a passage with a larger space (for example, the deformation area of ​​the outer shell, the pressure relief area of ​​the pressure relief mechanism, etc.). There is less gas passing between the first adapter and the first wall, which can reduce the risk of gas impacting the first adapter and deforming it, thereby reducing the risk of short circuiting the first adapter and the first wall, so that the battery has higher reliability.

[0082] The battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The battery disclosed in the present application can be used to form a power supply system of the electrical equipment.

[0083] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0084] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0085] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. Vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0086] The vehicle 1000 may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0087] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0088] Please refer to Figure 2 , Figure 2A schematic diagram of a battery provided in some embodiments of the present application. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is contained in the case 10. The case 10 is used to provide a storage space for the battery cell 20, and the case 10 can adopt a variety of structures. In some embodiments, the case 10 may include a first sub-case 11 and a second sub-case 12, and the first sub-case 11 and the second sub-case 12 cover each other, and the first sub-case 11 and the second sub-case 12 jointly define a storage space for accommodating the battery cell 20. The second sub-case 12 may be a hollow structure with one end open, and the first sub-case 11 may be a plate-like structure, and the first sub-case 11 covers the open side of the second sub-case 12, so that the first sub-case 11 and the second sub-case 12 jointly define a storage space; the first sub-case 11 and the second sub-case 12 may also be hollow structures with one side open, and the open side of the first sub-case 11 covers the open side of the second sub-case 12.

[0089] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0090] The battery cell 20 may be a secondary battery or a primary battery; the battery cell 20 may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.

[0091] Please refer to Figures 3 to 6 , Figure 3 A three-dimensional diagram of a partial structure of a battery provided in some embodiments of the present application, Figure 4 A schematic diagram of a partial structure of a battery provided in some embodiments of the present application, Figure 5 for Figure 4 The cross-sectional view in the AA direction, Figure 6 for Figure 5A partial enlarged view of the B portion of the battery 100. The embodiment of the present application provides a battery 100, which includes a battery cell 20 and a first support component 30. The battery cell 20 includes a shell 21, a first electrode terminal 23a, an electrode assembly 22, a first adapter 24 and a first insulating member 25. The shell 21 includes a first wall 213, the first electrode terminal 23a is arranged on the first wall 213, the electrode assembly 22 is arranged in the shell 21, and the end of the electrode assembly 22 facing the first wall 213 has a first pole ear 221. The first adapter 24 electrically connects the first electrode terminal 23a and the first pole ear 221, and the first insulating member 25 is arranged between the first wall 213 and the first adapter 24. The first support component 30 is arranged on the side of the first wall 213 away from the inside of the battery cell 20, and along the thickness direction Z of the first wall, the projection of the first support component 30 overlaps with the end of the first adapter 24 away from the first electrode terminal 23a.

[0092] Please refer to Figure 5 The housing 21 includes a shell 211 and an end cover 212 . The shell 211 has an opening, and the end cover 212 closes the opening to isolate the internal environment of the battery cell 20 from the external environment.

[0093] The shell 211 is a component used to cooperate with the end cap 212 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 22, the electrolyte and other components. The shell 211 and the end cap 212 can be independent components. The shell 211 can be of various shapes and sizes. Specifically, the shape of the shell 211 can be determined according to the specific shape and size of the electrode assembly 22. The material of the shell 211 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0094] The end cap 212 refers to a component that covers the opening of the shell 211 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 212 can be adapted to the shape of the shell 211 to match the shell 211. Optionally, the end cap 212 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 212 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and reliability can also be improved. Functional components such as electrode terminals can be provided on the end cap 212. The electrode terminal can be used to electrically connect to the electrode assembly 22 for outputting or inputting electrical energy of the battery cell 20. The material of the end cap 212 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and the embodiment of the present application does not impose special restrictions on this. In some embodiments, an insulating structure can also be provided on the inner side of the end cap 212, and the insulating structure can be used to isolate the electrical connection components in the shell 211 from the end cap 212 to reduce the risk of short circuit. Exemplarily, the insulating structure may be plastic, rubber, or the like.

[0095] The first wall 213 may be the end cover 212 , or the first wall 213 may be a wall portion of the housing 211 .

[0096] The first electrode terminal 23a may be a positive electrode terminal, or the first electrode terminal 23a may be a negative electrode terminal.

[0097] In some embodiments, the first electrode terminal 23 a may be insulated and disposed on the first wall 213 .

[0098] The electrode assembly 22 is a component in the battery cell 20 where an electrochemical reaction occurs. One or more electrode assemblies 22 may be included in the housing 211. The electrode assembly 22 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet, and the separator is used to separate the positive electrode sheet and the negative electrode sheet to avoid short circuits between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute a pole ear. The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body.

[0099] The first electrode tab 221 is disposed at one end of the electrode assembly 22 facing the first wall 213 , so that the first electrode tab 221 is connected to the first electrode terminal 23 a .

[0100] The first adapter 24 is a component for realizing electrical connection between the first electrode terminal 23a and the first electrode tab 221. The first electrode terminal 23a and the first electrode tab 221 can be welded to the first adapter 24 respectively, so as to improve the connection stability and have a stable current carrying capacity.

[0101] In some embodiments, the thickness direction of the electrode assembly 22 may be perpendicular to the thickness direction Z of the first wall.

[0102] When viewed along the thickness direction Z of the first wall, the first supporting member 30 partially overlaps with the first adapter 24 , and a projection of an end of the first adapter 24 away from the first electrode terminal 23 a falls within the projection of the first supporting member 30 .

[0103] The end of the first adapter 24 away from the first electrode terminal 23a refers to the end surface of the first adapter 24 away from the first electrode terminal 23a and the partial area of ​​the first adapter 24 close to the end surface, and is not limited to the end surface of the first adapter 24 away from the first electrode terminal 23a.

[0104] The first insulating member 25 is an insulating structure disposed inside the first wall 213 and is used to insulate and isolate the first adapter 24 from the first wall 213 .

[0105] According to the battery 100 of the embodiment of the present application, the first support component 30 is arranged on the side of the first wall 213 away from the interior of the battery cell 20, and the projection of the first support component 30 overlaps with the end of the first adapter 24 away from the first electrode terminal 23a. After the battery cell 20 thermally runs away and the first insulating component 25 is melted by high temperature, the first support component 30 constrains the first wall 213 to deform toward the outside of the battery cell 20. Therefore, the space between the first adapter 24 and the first wall 213 changes little, and the gas inside the battery cell 20 will look for a passage with a larger space (for example, the deformation area of ​​the outer shell 21, the pressure relief area of ​​the pressure relief mechanism, etc.). There is less gas passing between the first adapter 24 and the first wall 213, which can reduce the risk of gas impacting the first adapter 24 to deform, thereby reducing the risk of short circuit between the first adapter 24 and the first wall 213, thereby improving the reliability of the battery 100.

[0106] Please refer to Figure 5 and Figure 6 According to some embodiments of the present application, along the thickness direction Z of the first wall, the projection of the first support component 30 at least partially overlaps with the projection of the first electrode tab 221 .

[0107] Observing along the thickness direction Z of the first wall, the first support component 30 partially overlaps with the first pole tab 221 , or the first support component 30 completely overlaps with the first pole tab 221 , so that the first support component 30 and the first pole tab 221 have a larger overlapping area.

[0108] In the above scheme, the projection of the first support component 30 at least partially overlaps with the projection of the first pole ear 221, and the first support component 30 and the first pole ear 221 can have a large overlapping area. After the battery cell 20 thermally runs away and the first insulating component 25 is thermally melted, the risk of the first pole ear 221 and the first adapter 24 deforming toward the first wall 213 can be reduced while constraining the first wall 213 to deform toward the outside of the battery cell 20, thereby reducing the risk of the first pole ear 221 and the first adapter 24 contacting and short-circuiting with the first wall 213.

[0109] Please refer to Figure 5 and Figure 6 According to some embodiments of the present application, along a first direction X, the first electrode tab 221 is spaced apart from the first electrode terminal 23 a , and the first direction X is perpendicular to a thickness direction Z of the first wall.

[0110] In the figure, the direction indicated by the letter X may be the first direction.

[0111] The first electrode tab 221 and the first electrode terminal 23a are spaced apart in the first direction X. The distance between the first electrode tab 221 and the first electrode terminal 23a in the first direction X can be large, which facilitates the connection between the first adapter 24 and the first electrode tab 221 and the first electrode terminal 23a.

[0112] In the above scheme, the first pole ear 221 is spaced apart from the first electrode terminal 23a, which can reduce the risk of interference between the first pole ear 221 and the first electrode terminal 23a, and can reduce the space occupied by the first pole ear 221 and the first electrode terminal 23a in the thickness direction Z of the first wall, thereby improving the space utilization rate inside the battery cell 20 in the thickness direction Z of the first wall.

[0113] According to some embodiments of the present application, the first adapter 24 includes a first connecting portion 241 and a second connecting portion 242 connected in sequence along a first direction X, the first connecting portion 241 is connected to the first electrode terminal 23a, the second connecting portion 242 is connected to the first electrode ear 221, and along the thickness direction Z of the first wall, the projection of the first support part 30 at least partially overlaps with the projection of the second connecting portion 242.

[0114] The first connection part 241 and the second connection part 242 are arranged in sequence in the first direction X to facilitate the connection between the first adapter 24 and the first electrode terminal 23a and the first pole ear 221. At the same time, the size of the first adapter 24 in the thickness direction Z of the first wall can be smaller, and the space inside the shell 21 in the first direction X can be reasonably utilized.

[0115] In the above scheme, the first connecting portion 241 and the second connecting portion 242 respectively connect the first electrode terminal 23a and the first pole ear 221, and the projection of the first supporting member 30 at least partially overlaps with the projection of the second connecting portion 242. The first supporting member 30 constrains the area of ​​the first wall 213 corresponding to the second connecting portion 242 and limits the deformation of the area toward the outside of the battery cell 20, which can reduce the risk of the first adapter 24 and the first pole ear 221 moving toward the first wall 213 and contacting the first wall 213 to short-circuit.

[0116] Please refer to Figure 6 According to some embodiments of the present application, along the thickness direction Z of the first wall, the projection of the second connection portion 242 does not overlap with the projection of the first electrode terminal 23 a .

[0117] “Along the thickness direction Z of the first wall, the projection of the second connection portion 242 does not overlap with the projection of the first electrode terminal 23 a ” means that the second connection portion 242 and the first electrode terminal 23 a are spaced apart in the first direction X.

[0118] Along the first direction X, the size of the second connection portion 242 may be larger than the size of the first electrode tab 221 , so that the first electrode tab 221 and the first adapter 24 have a larger connection area, thereby having a higher current flow capacity.

[0119] In the above solution, the projection of the second connection portion 242 does not overlap with the projection of the first electrode terminal 23 a , which can reduce the risk of interference between the second connection portion 242 and the first electrode terminal 23 a .

[0120] Please refer to Figure 6 According to some embodiments of the present application, the first wall 213 includes a main body portion 2131 and a first convex portion 2132, the first convex portion 2132 protrudes from the inner surface of the main body portion 2131, and a first recess 2133 is formed on the outer surface of the first wall 213 at a position corresponding to the first convex portion 2132, and a portion of the first electrode terminal 23a is located in the first recess 2133; along the first direction X, the projection of the second connecting portion 242 at least partially overlaps with the projection of the first convex portion 2132.

[0121] The first wall 213 can be formed by stamping the first convex portion 2132 and the first concave portion 2133 to facilitate processing and manufacturing.

[0122] A portion of the first electrode terminal 23 a is located within the first recess 2133 , so that the first electrode terminal 23 a may be disposed toward the inside of the battery cell 20 .

[0123] Along the first direction X, the projection of the second connection portion 242 partially overlaps with the projection of the first protrusion 2132, or the projection of the second connection portion 242 completely overlaps with the projection of the first protrusion 2132, so that when the first electrode terminal 23a is set toward the inside of the battery cell 20, the first electrode terminal 23a can utilize the space to the side of the second connection portion 242 in the first direction X.

[0124] In the above scheme, a portion of the first electrode terminal 23a is located in the first recess 2133, and the first electrode terminal 23a is arranged toward the interior of the battery cell 20, which can reduce the size of the first electrode terminal 23a protruding from the outer surface of the first wall 213, thereby reducing the overall height of the battery cell 20, so as to improve the energy density of the battery cell 20.

[0125] According to some embodiments of the present application, the first supporting component 30 is pressed against the first wall 213 .

[0126] The first supporting portion is pressed against the first wall 213 , and may be in direct contact with the first wall 213 , or may be indirectly connected to the first wall 213 via an insulating member (such as insulating glue).

[0127] In the above solution, the first support member 30 presses against the first wall 213 and can exert a force on the first wall 213 to further restrict the first wall 213 from deforming toward the outside of the battery cell 20 .

[0128] Please refer to Figure 5 , and further refer to Figure 7 , Figure 7 for Figure 5 A partial enlarged view of the C position of the battery cell 20. According to some embodiments of the present application, the battery cell 20 further includes a second electrode terminal 23b and a second adapter 26, the second electrode terminal 23b is disposed on the first wall 213, the end of the electrode assembly 22 facing the first wall 213 also has a second electrode tab 222, the second adapter 26 electrically connects the second electrode terminal 23b and the second electrode tab 222, and the first insulating member 25 is further disposed between the first wall 213 and the second adapter 26. The battery 100 further includes a second support member 40, the second support member 40 is disposed on a side of the first wall 213 away from the interior of the battery cell 20, and along the thickness direction Z of the first wall, the projection of the second support member 40 overlaps with the end of the second adapter 26 away from the second electrode terminal 23b.

[0129] The second electrode terminal 23 b has a polarity opposite to that of the first electrode terminal 23 a and may be insulated from the first wall 213 .

[0130] The second electrode tab 222 and the first electrode tab 221 have opposite polarities. The second electrode tab 222 and the first electrode tab 221 are both located at one end of the electrode assembly 22 facing the first wall 213 .

[0131] The second electrode terminal 23 b and the second electrode tab 222 may be welded to the second adapter 26 , respectively.

[0132] When viewed along the thickness direction Z of the first wall, the second supporting member 40 partially overlaps with the second adapter 26 , and a projection of an end of the second adapter 26 away from the second electrode terminal 23 b falls within the projection of the second supporting member 40 .

[0133] The end of the second adapter 26 away from the second electrode terminal 23b refers to the end surface of the second adapter 26 away from the second electrode terminal 23b and the partial area of ​​the second adapter 26 close to the end surface, and is not limited to the end surface of the second adapter 26 away from the second electrode terminal 23b.

[0134] The first transition piece 24 is also used to insulate and isolate the second transition piece 26 and the first wall 213 .

[0135] In the above scheme, the second support component 40 is configured to constrain the area of ​​the first wall 213 corresponding to the second adapter 26 to limit the deformation of the area toward the outside of the battery cell 20, thereby reducing the risk of the end of the second adapter 26 away from the second electrode terminal 23b moving toward the first wall 213 and contacting the first wall 213, thereby reducing the risk of short circuit between the positive and negative electrodes and improving the reliability of the battery 100.

[0136] Please refer to Figure 7 In some embodiments, along the thickness direction Z of the first wall, the projection of the second support member 40 at least partially overlaps with the projection of the second electrode tab 222 .

[0137] Observing along the thickness direction Z of the first wall, the second support component 40 partially overlaps with the second pole tab 222 , or the second support component 40 completely overlaps with the second pole tab 222 , so that the second support component 40 and the second pole tab 222 have a larger overlapping area.

[0138] In the above scheme, the projection of the second support component 40 at least partially overlaps with the projection of the second pole ear 222, and the second support component 40 and the second pole ear 222 can have a large overlapping area. After the battery cell 20 thermally runs away and the first insulating component 25 is thermally melted, while constraining the first wall 213 to deform toward the outside of the battery cell 20, the risk of deformation of the second pole ear 222 and the second adapter 26 toward the first wall 213 can be reduced, thereby reducing the risk of short circuit between the second pole ear 222 and the second adapter 26 and the first wall 213.

[0139] Please refer to Figure 7 In some embodiments, along the first direction X, the second electrode tab 222 is spaced apart from the second electrode terminal 23 b.

[0140] The second pole tab 222 and the second electrode terminal 23 b are spaced apart in the first direction X. The distance between the second pole tab 222 and the second electrode terminal 23 b in the first direction X can be relatively large, so as to facilitate the connection between the second adapter 26 and the second pole tab 222 and the second electrode terminal 23 b.

[0141] In the above scheme, the second pole ear 222 is spaced apart from the second electrode terminal 23b, which can reduce the risk of interference between the second pole ear 222 and the second electrode terminal 23b, and can reduce the space occupied by the second pole ear 222 and the second electrode terminal 23b in the thickness direction Z of the first wall, thereby improving the space utilization inside the battery cell 20 in the thickness direction Z of the first wall.

[0142] In some embodiments, the second adapter 26 includes a third connection portion 261 and a fourth connection portion 262 connected in sequence along the first direction X, the third connection portion 261 is connected to the second electrode terminal 23b, and the fourth connection portion 262 is connected to the second pole ear 222, and along the thickness direction Z of the first wall, the projection of the second support member 40 at least partially overlaps with the projection of the fourth connection portion 262.

[0143] The third connection part 261 and the fourth connection part 262 are arranged in sequence in the first direction X to facilitate the connection between the second adapter 26 and the second electrode terminal 23b and the second electrode ear 222. At the same time, the size of the second adapter 26 in the thickness direction Z of the first wall can be smaller, and the space inside the shell 21 in the first direction X can be reasonably utilized.

[0144] In the above scheme, the third connecting portion 261 and the fourth connecting portion 262 are respectively connected to the second electrode terminal 23b and the second pole ear 222, and the projection of the second supporting component 40 at least partially overlaps with the projection of the fourth connecting portion 262. The second supporting component 40 constrains the area of ​​the first wall 213 corresponding to the fourth connecting portion 262 and limits the deformation of the area toward the outside of the battery cell 20, which can reduce the risk of the second adapter 26 and the second pole ear 222 moving toward the first wall 213 and contacting the first wall 213 for short circuit.

[0145] Please refer to Figure 7 In some embodiments, along the thickness direction Z of the first wall, the projection of the fourth connection portion 262 does not overlap with the projection of the second electrode terminal 23 b.

[0146] “Along the thickness direction Z of the first wall, the projection of the fourth connection portion 262 does not overlap with the projection of the second electrode terminal 23 b ” means that the fourth connection portion 262 and the second electrode terminal 23 b are spaced apart in the first direction X.

[0147] Along the first direction X, the size of the fourth connection portion 262 may be larger than the size of the second pole tab 222 , so that the second pole tab 222 and the second adapter 26 have a larger connection area, thereby having a higher current flow capacity.

[0148] In the above solution, the projection of the fourth connection portion 262 does not overlap with the projection of the second electrode terminal 23 b , which can reduce the risk of interference between the fourth connection portion 262 and the second electrode terminal 23 b .

[0149] In some embodiments, the first wall 213 also includes a second protrusion 2134, which protrudes from the inner surface of the main body 2131, and a second recess 2135 is formed on the outer surface of the first wall 213 at a position corresponding to the second protrusion 2134, and a portion of the second electrode terminal 23b is located in the second recess 2135; along the first direction X, the projection of the fourth connecting portion 262 at least partially overlaps with the projection of the second protrusion 2134.

[0150] The first wall 213 can be formed by stamping the second convex portion 2134 and the second concave portion 2135 to facilitate processing and manufacturing.

[0151] A portion of the second electrode terminal 23 b is located within the second recess 2135 , so that the second electrode terminal 23 b may be disposed toward the inside of the battery cell 20 .

[0152] Along the first direction X, the projection of the fourth connection portion 262 partially overlaps with the projection of the second protrusion 2134, or the projection of the fourth connection portion 262 completely overlaps with the projection of the second protrusion 2134, so that when the second electrode terminal 23b is set toward the inside of the battery cell 20, the second electrode terminal 23b can utilize the space to the side of the fourth connection portion 262 in the first direction X.

[0153] In the above scheme, a portion of the second electrode terminal 23b is located in the second recess 2135, and the second electrode terminal 23b is arranged toward the interior of the battery cell 20, which can reduce the size of the second electrode terminal 23b protruding from the outer surface of the first wall 213, thereby reducing the overall height of the battery cell 20, so as to improve the energy density of the battery cell 20.

[0154] In some embodiments, the second supporting member 40 is pressed against the first wall 213 .

[0155] The second supporting portion is pressed against the first wall 213 , and may be in direct contact with the first wall 213 , or may be indirectly connected to the first wall 213 via an insulating member (such as insulating glue).

[0156] In the above solution, the second supporting member 40 presses against the first wall 213 , and can exert a force on the first wall 213 to further restrict the first wall 213 from deforming toward the outside of the battery cell 20 .

[0157] Please refer to Figure 5 According to some embodiments of the present application, the first electrode terminal 23a and the second electrode terminal 23b are arranged at intervals along a first direction X, and the first direction X is perpendicular to the thickness direction Z of the first wall; along the first direction X, the first electrode terminal 23a and the second electrode terminal 23b are arranged between the first support part 30 and the second support part.

[0158] The first electrode terminal 23a and the second electrode terminal 23b are spaced apart along a first direction X. The first direction X may be parallel to the length direction of the electrode terminals, and the distance between the first electrode terminal 23a and the second electrode terminal 23b in the first direction X may be relatively large.

[0159] Along the first direction X, there is a large space between the first supporting member 30 and the second supporting member 40 to facilitate the arrangement of the first electrode terminal 23 a and the second electrode terminal 23 b .

[0160] In the above scheme, the first electrode terminal 23a and the second electrode terminal 23b are arranged between the first support component 30 and the second support component 40, and the space of the first wall 213 in the first direction X is reasonably utilized. At the same time, other components (such as injection holes, pressure relief mechanisms, etc.) can be arranged between the first electrode terminal 23a and the second electrode terminal 23b.

[0161] The structure of the second supporting member 40 may be the same as that of the first supporting member 30 , and the arrangement of the second supporting member 40 may be the same as that of the first supporting member 30 .

[0162] According to some embodiments of the present application, the rigidity of the first supporting member 30 is greater than the rigidity of the first wall 213 .

[0163] Stiffness is the ability of a material or structure to resist elastic deformation when subjected to stress.

[0164] In the above solution, the rigidity of the first support component 30 is greater than that of the first wall 213 , and the first support component 30 has a strong ability to resist deformation, and can restrict the first wall 213 from deforming toward the outside of the battery cell 20 .

[0165] In some embodiments, the stiffness of the second support member 40 is greater than the stiffness of the first wall 213 .

[0166] In the above solution, the rigidity of the second support component 40 is greater than that of the first wall 213 , and the second support component 40 has a strong ability to resist deformation, and can restrict the first wall 213 from deforming toward the outside of the battery cell 20 .

[0167] Please refer to Figure 6 According to some embodiments of the present application, along the thickness direction Z of the first wall, the projection of the first support member 30 does not overlap with the projection of the first electrode terminal 23 a .

[0168] When viewed along the thickness direction Z of the first wall, the first support member 30 and the first electrode terminal 23 a do not overlap, and the first support member 30 and the first electrode terminal 23 a are arranged in a staggered manner.

[0169] In the above solution, the projection of the first supporting member 30 does not overlap with the projection of the first electrode terminal 23 a , which can reduce the risk of interference between the first supporting member 30 and the first electrode terminal 23 a .

[0170] In some embodiments, along the thickness direction Z of the first wall, a projection of the second support member 40 does not overlap with a projection of the second electrode terminal 23 b .

[0171] When viewed along the thickness direction Z of the first wall, the second support member 40 and the second electrode terminal 23 b do not overlap, and the second support member 40 and the second electrode terminal 23 b are disposed in a staggered manner.

[0172] In the above solution, the projection of the second supporting member 40 does not overlap with the projection of the second electrode terminal 23 b , which can reduce the risk of interference between the second supporting member 40 and the second electrode terminal 23 b .

[0173] Please refer to Figure 3 and Figure 4 According to some embodiments of the present application, there are multiple battery cells 20, and the multiple battery cells 20 are stacked along the second direction Y, and the second direction Y is perpendicular to the thickness direction Z of the first wall; along the thickness direction Z of the first wall, the projection of the first support component 30 overlaps with the end of the first adapter 24 of the multiple battery cells 20 away from the first electrode terminal 23a.

[0174] The second direction Y may be parallel to a thickness direction of the electrode assembly 22 .

[0175] The projection of the first support component 30 overlaps with the end of the first adapter 24 of the multiple battery cells 20 away from the first electrode terminal 23a, so that the first support component 30 is arranged on the first wall 213 of the multiple battery cells 20, that is, in the second direction Y, the first support component 30 has a larger size so that all the battery cells 20 share one first support component 30.

[0176] In the above scheme, multiple battery cells 20 are stacked along the second direction Y to facilitate the arrangement of more battery cells 20; the first support component 30 is arranged corresponding to the multiple battery cells 20, so that multiple battery cells 20 share one first support component 30, which has a simple structure and reduces parts.

[0177] In some embodiments, along the thickness direction Z of the first wall, a projection of the second supporting member 40 overlaps with an end of the second adapter 26 of the plurality of battery cells 20 away from the second electrode terminal 23 b .

[0178] The projection of the second support component 40 overlaps with the end of the second adapter 26 of the multiple battery cells 20 away from the second electrode terminal 23b, so that the second support component 40 is arranged on the first wall 213 of the multiple battery cells 20, that is, in the second direction Y, the second support component 40 has a larger size so that all the battery cells 20 share one second support component 40.

[0179] In the above scheme, multiple battery cells 20 are stacked along the second direction Y to facilitate the arrangement of more battery cells 20; the second support component 40 is arranged corresponding to the multiple battery cells 20, so that multiple battery cells 20 share one second support component 40, which has a simple structure and reduces parts.

[0180] Please refer to Figure 3 and Figure 4 According to some embodiments of the present application, along the second direction Y, a projection of the first supporting member 30 in the thickness direction Z of the first wall covers a projection of the first wall 213 in the thickness direction Z of the first wall.

[0181] Along the second direction Y, the size of the first support member 30 is larger than the sum of the sizes of the first walls 213 of the plurality of battery cells 20 , so that the first support member 30 covers the first walls 213 of all the battery cells 20 in the second direction Y.

[0182] In the above solution, the first supporting component 30 covers the entire first wall 213 in the second direction Y, so that the first supporting component 30 has a larger connection area with the first wall 213 in the second direction Y, so as to have a better restraining effect on the first wall 213.

[0183] In some embodiments, along the second direction Y, a projection of the second supporting member 40 in the thickness direction Z of the first wall covers a projection of the first wall 213 in the thickness direction Z of the first wall.

[0184] Along the second direction Y, the size of the second support member 40 is larger than the sum of the sizes of the first walls 213 of the plurality of battery cells 20 , so that the second support member 40 covers the first walls 213 of all the battery cells 20 in the second direction Y.

[0185] In the above solution, the second supporting component 40 covers the entire first wall 213 in the second direction Y, so that the second supporting component 40 has a larger connection area with the first wall 213 in the second direction Y, so as to have a better restraining effect on the first wall 213.

[0186] According to some embodiments of the present application, the thickness of the first supporting member 30 is greater than the thickness of the first wall 213 .

[0187] The thickness of the first supporting member 30 is parallel to the thickness of the first wall 213 .

[0188] In some embodiments, the material of the first supporting component 30 may be the same as that of the first wall 213 , or the material of the first supporting component 30 may be different from that of the first wall 213 .

[0189] In the above solution, the thickness of the first support component 30 is greater than the thickness of the first wall 213 , and the first support component 30 has good anti-deformation ability, so that the first support component 30 has a good restraining effect on the first wall 213 .

[0190] In some embodiments, the thickness of the second support member 40 is greater than the thickness of the first wall 213 .

[0191] The thickness of the second supporting member 40 is parallel to the thickness of the first wall 213 .

[0192] In some embodiments, the material of the second supporting component 40 may be the same as that of the first wall 213 , or the material of the second supporting component 40 may be different from that of the first wall 213 .

[0193] In the above solution, the thickness of the second supporting component 40 is greater than the thickness of the first wall 213 , and the second supporting component 40 has good anti-deformation ability, so that the second supporting component 40 has a good restraining effect on the first wall 213 .

[0194] Please refer to Figure 4 According to some embodiments of the present application, the battery cell 20 further includes a pressure relief mechanism 27 , and the pressure relief mechanism 27 is disposed on the first wall 213 .

[0195] The pressure relief mechanism 27 may be a weak area disposed on the first wall 213 , a weak structure disposed on the first wall 213 , or a pressure relief valve disposed on the first wall 213 .

[0196] In some embodiments, when the internal pressure of the battery cell 20 increases to a threshold value, the pressure relief mechanism 27 can be opened in time to release the pressure.

[0197] Please refer to Figure 4 In some embodiments, along the first direction X, the pressure relief mechanism 27 is disposed between the first electrode terminal 23a and the second electrode terminal 23b.

[0198] In the above scheme, the pressure relief mechanism 27 is arranged on the first wall 213. When the battery cell 20 thermally runs away, when the pressure relief mechanism 27 releases pressure, the high-temperature and high-pressure gas can flow toward the pressure relief mechanism 27, and cooperate with the first support component 30 to further reduce the risk of the first wall 213 deforming toward the outside of the battery cell 20.

[0199] According to some embodiments of the present application, the housing 21 includes a shell 211 and an end cover 212 , the shell 211 has an opening, the end cover 212 closes the opening, and the first wall 213 is the end cover 212 .

[0200] According to some embodiments of the present application, an electrical device is further provided, which includes a battery 100 as provided in any of the above embodiments, and the battery 100 is used to provide electrical energy.

[0201] The electrical equipment may be any of the above-mentioned devices or systems using the battery 100 .

[0202] According to some embodiments of this application, please refer to Figures 3 to 7 The embodiment of the present application provides a battery 100, which includes a first support component 30, a second support component 40 and a plurality of battery cells 20, and the plurality of battery cells 20 are stacked along a second direction Y.

[0203] The battery cell 20 includes a housing 21, a first electrode terminal 23a, a second electrode terminal 23b, an electrode assembly 22, a first insulating member 25, a first adapter 24, and a second adapter 26. The housing 21 includes a first wall 213, and the first electrode terminal 23a and the second electrode terminal 23b are both arranged on the first wall 213. The first electrode terminal 23a and the second electrode terminal 23b are arranged at intervals along the first direction X. The first adapter 24 includes a first connection portion 241 and a second connection portion 242 connected in sequence along the first direction X, the first connection portion 241 is connected to the first electrode terminal 23a, and the second connection portion 242 is connected to the first pole lug 221. The second adapter 26 includes a third connection portion 261 and a fourth connection portion 262 connected in sequence along the first direction X, the third connection portion 261 is connected to the second electrode terminal 23b, and the fourth connection portion 262 is connected to the second pole lug 222.

[0204] The first support member 30 and the second support member 40 are disposed on a side of the first wall 213 away from the interior of the battery cell 20. Along the first direction X, the first electrode terminal 23a and the second electrode terminal 23b are disposed between the first support member 30 and the second support member 40, and the first electrode terminal 23a is disposed closer to the first support member 30 relative to the second electrode terminal 23b. Along the second direction Y, the projection of the first support member 30 in the thickness direction Z of the first wall covers the projection of the first wall 213 in the thickness direction Z of the first wall, and the projection of the second support member 40 in the thickness direction Z of the first wall covers the projection of the first wall 213 in the thickness direction Z of the first wall.

[0205] Along the thickness direction Z of the first wall, the projection of the first supporting member 30 at least partially overlaps with the projection of the second connecting portion 242 , and the projection of the second supporting member 40 at least partially overlaps with the projection of the fourth connecting portion 262 .

[0206] According to the battery 100 of the embodiment of the present application, the arrangement of the first support component 30 and the second support component 40 can constrain the first wall 213 from deforming toward the outside of the battery cell 20. After the battery cell 20 thermally runs away and the first insulating component 25 is thermally melted, the risk of the first adapter 24 and the first pole ear 221, and the second adapter 26 and the second pole ear 222 deforming toward the first wall 213 is reduced, the risk of short circuit between the positive and negative poles is reduced, and the reliability of the battery 100 is improved.

[0207] 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 battery cell, comprising a housing, a first electrode terminal, an electrode assembly, a first adapter and a first insulating member, wherein the housing comprises a first wall, the first electrode terminal is disposed on the first wall, the electrode assembly is disposed in the housing, an end of the electrode assembly facing the first wall has a first electrode tab, the first adapter electrically connects the first electrode terminal and the first electrode tab, and the first insulating member is disposed between the first wall and the first adapter; The first supporting component is disposed on a side of the first wall away from the interior of the battery cell, and along the thickness direction of the first wall, a projection of the first supporting component overlaps with an end of the first adapter away from the first electrode terminal.

2. The battery according to claim 1, characterized in that Along the thickness direction of the first wall, a projection of the first supporting member at least partially overlaps with a projection of the first electrode tab.

3. The battery according to claim 1 or 2, characterized in that: The first electrode tab is spaced apart from the first electrode terminal along a first direction, and the first direction is perpendicular to a thickness direction of the first wall.

4. The battery according to claim 2, characterized in that The first adapter includes a first connecting portion and a second connecting portion connected in sequence along a first direction, the first connecting portion is connected to the first electrode terminal, the second connecting portion is connected to the first electrode tab, and along the thickness direction of the first wall, the projection of the first supporting part and the projection of the second connecting portion at least partially overlap.

5. The battery according to claim 4, characterized in that Along the thickness direction of the first wall, a projection of the second connection portion does not overlap with a projection of the first electrode terminal.

6. The battery according to claim 4, characterized in that The first wall includes a main body and a first convex portion, the first convex portion protrudes from the inner surface of the main body, a first concave portion is formed on the outer surface of the first wall at a position corresponding to the first convex portion, and a part of the first electrode terminal is located in the first concave portion; Along the first direction, a projection of the second connecting portion at least partially overlaps with a projection of the first convex portion.

7. The battery according to claim 1, characterized in that The first supporting component is pressed against the first wall.

8. The battery according to claim 1, characterized in that The battery cell further includes a second electrode terminal and a second adapter, wherein the second electrode terminal is disposed on the first wall, the electrode assembly further includes a second electrode tab at one end facing the first wall, the second adapter electrically connects the second electrode terminal and the second electrode tab, and the first insulating member is further disposed between the first wall and the second adapter; The battery further includes a second supporting component, which is disposed on a side of the first wall away from the interior of the battery cell, and a projection of the second supporting component overlaps an end of the second adapter away from the second electrode terminal along a thickness direction of the first wall.

9. The battery according to claim 8, characterized in that The first electrode terminal and the second electrode terminal are arranged at intervals along a first direction, and the first direction is perpendicular to the thickness direction of the first wall; The first electrode terminal and the second electrode terminal are disposed between the first supporting member and the second supporting member along the first direction.

10. The battery according to claim 1, characterized in that The first supporting member has a stiffness greater than that of the first wall.

11. The battery according to claim 1, characterized in that Along the thickness direction of the first wall, a projection of the first supporting member and a projection of the first electrode terminal do not overlap.

12. The battery according to claim 1, characterized in that There are multiple battery cells, and the multiple battery cells are stacked along a second direction, and the second direction is perpendicular to the thickness direction of the first wall; Along the thickness direction of the first wall, a projection of the first supporting member overlaps with an end of the first adapter of the plurality of battery cells that is away from the first electrode terminal.

13. The battery according to claim 12, characterized in that Along the second direction, a projection of the first supporting member in a thickness direction of the first wall covers a projection of the first wall in the thickness direction of the first wall.

14. The battery according to claim 1, characterized in that The thickness of the first supporting member is greater than the thickness of the first wall.

15. The battery according to claim 1, characterized in that The battery cell further includes a pressure relief mechanism, and the pressure relief mechanism is disposed on the first wall.

16. An electrical equipment, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 15, wherein the battery is used to provide electrical energy.

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