Battery and electric device

Abstract

A battery (100) and an electrical device. The battery (100) includes a battery cell (20) and a first support member (30). The battery cell (20) includes a housing (21), a first electrode terminal (23a), an electrode assembly (22), a first adapter (24), and a first insulating member (25). The housing (21) includes a first wall (213). The first electrode terminal (23a) is disposed on the first wall (213). The electrode assembly (22) is disposed inside the housing (21). The end of the electrode assembly (22) facing the first wall (213) has a first tab (221). The first adapter (24) electrically connects the first electrode terminal (23a) and the first tab (221). The first insulating member (25) is disposed between the first wall (213) and the first adapter (24). The first support member (30) is disposed on the side of the first wall (213) away from the interior of the battery cell (20). Along the thickness direction (Z) of the first wall (213), the projection of the first support member (30) overlaps with the end of the first adapter (24) away from the first electrode terminal (23a). This can improve the reliability of the battery.

Description

Batteries and electrical equipment 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 key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

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

[0004] Summary of the Invention

[0005] The present application provides a battery and an electrical device, which can improve the reliability of the battery.

[0006] This application is achieved through the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a battery comprising a battery cell and a first support component. The battery cell comprises a housing, a first electrode terminal, an electrode assembly, a first adapter, and a first insulating member. The housing comprises a first wall, the first electrode terminal is disposed on the first wall, the electrode assembly is disposed within the housing, the electrode assembly has a first tab at one end facing the first wall, the first adapter electrically connects the first electrode terminal and the first tab, and the first insulating member is disposed between the first wall and the first adapter. The first support component is disposed on a side of the first wall facing away from the interior of the battery cell, and along the thickness direction of the first wall, the projection of the first support component overlaps with the end of the first adapter away from the first electrode terminal.

[0008] 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 seek a passage with a larger space (for example, the deformation area of ​​the shell, the pressure relief area of ​​the pressure relief mechanism, etc.). There is less gas passing through 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 circuit between the first adapter and the first wall, thereby improving the reliability of the battery.

[0009] 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 tab.

[0010] In the above scheme, the projection of the first support component and the projection of the first pole ear at least partially overlap, and the first support component and the first pole ear can have a large overlapping area. After the battery cell thermal runaway and the first insulating member is hot-melted, 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 the first pole ear and the first adapter short-circuiting with the first wall.

[0011] According to some embodiments of the present application, the first 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.

[0012] In the above solution, the first electrode tab is spaced apart from the first electrode terminal, which can reduce the risk of interference between the first electrode tab and the first electrode terminal, and can reduce the space occupied by the first electrode tab 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.

[0013] 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 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.

[0014] In the above scheme, the first connecting part and the second connecting part respectively connect the first electrode terminal and the first tab, the projection of the first supporting part at least partially overlaps with the projection of the second connecting part, and the first supporting part 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 tab moving toward the first wall and short-circuiting due to contact with the first wall.

[0015] 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.

[0016] 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.

[0017] 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, and 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 portion of the first electrode terminal is located in the first concave portion; along the first direction, the projection of the second connecting portion at least partially overlaps with the projection of the first convex portion.

[0018] In the above solution, 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 increase the energy density of the battery cell.

[0019] According to some embodiments of the present application, the first supporting component is pressed against the first wall.

[0020] 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.

[0021] 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 electrode assembly also has a second pole ear at one end facing the first wall, 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.

[0022] 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 poles and improving the reliability of the battery.

[0023] 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 support part and the second support part.

[0024] 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. 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.

[0025] According to some embodiments of the present application, the rigidity of the first supporting component is greater than the rigidity of the first wall.

[0026] In the above solution, the rigidity of the first supporting component is greater than that of the first wall. 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.

[0027] According to some embodiments of the present application, along the thickness direction of the first wall, a projection of the first support member and a projection of the first electrode terminal do not overlap.

[0028] 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.

[0029] According to some embodiments of the present application, there are multiple battery cells, and the multiple battery cells are stacked along the second direction, which 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.

[0030] In the above solution, multiple battery cells are stacked along the second direction to facilitate the arrangement of more battery cells; the first support components are arranged corresponding to the multiple battery cells, so that multiple battery cells share one first support component, which simplifies the structure and reduces the number of parts.

[0031] 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.

[0032] 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.

[0033] According to some embodiments of the present application, a thickness of the first supporting component is greater than a thickness of the first wall.

[0034] 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.

[0035] 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.

[0036] 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, high-temperature and high-pressure gas can flow toward the pressure relief mechanism, and cooperate with the first support component to further reduce the risk of the first wall deforming toward the outside of the battery cell.

[0037] 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.

[0038] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 relevant drawings can be obtained based on these drawings without creative work.

[0040] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0041] FIG2 is an exploded schematic diagram of a battery provided in some embodiments of the present application;

[0042] FIG3 is a perspective view of a partial structure of a battery provided in some embodiments of the present application;

[0043] FIG4 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0044] FIG5 is a cross-sectional view taken along the AA direction of FIG4 ;

[0045] FIG6 is a partial enlarged view of point B in FIG5 ;

[0046] FIG7 is a partial enlarged view of point C in FIG5 .

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

[0048] Marking instructions: 100 - battery; 10 - housing; 11 - first sub-housing; 12 - second sub-housing; 20 - battery cell; 21 - housing; 211 - shell; 212 - end cap; 213 - first wall; 2131 - body; 2132 - first convex portion; 2133 - first concave portion; 2134 - second convex portion; 2135 - second concave portion; 22 - electrode assembly; 221 - first electrode tab; 222 - second electrode tab; 23a - first electrode end Sub; 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

[0049] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. 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" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" 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-secondary relationship.

[0051] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0053] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0054] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0055] 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.

[0056] 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 housed in the case.

[0057] 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.

[0058] In some embodiments, the battery may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0059] 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.

[0060] 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-acid batteries, and the like.

[0061] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, placed between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0062] In some embodiments, the positive electrode may be a positive electrode sheet, which 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.

[0063] 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 provided on either or both of the two facing surfaces of the positive electrode current collector.

[0064] 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 a silver-plated surface may be used. The composite current collector may include a polymer material base layer 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.).

[0065] 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.

[0066] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0067] As an example, the negative electrode current collector may be a metal foil or a composite current collector. For example, the metal foil may be silver-plated aluminum, silver-plated stainless steel, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium.

[0068] In some embodiments, the negative electrode current collector has two opposite surfaces in its thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0069] As an example, the negative electrode active material may be a negative electrode active material for a battery that is well 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, 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.

[0070] 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 and mechanical stability can be selected.

[0071] As an example, the primary 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 particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component positioned between the positive and negative electrodes, or it can be attached to the surfaces of the positive and negative electrodes.

[0072] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transport ions and isolate the positive and negative electrodes.

[0073] 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.

[0074] In some embodiments, the electrode assembly is a laminate structure.

[0075] In some embodiments, a 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 (e.g., a copper-aluminum composite housing).

[0076] In some embodiments, the housing includes an end cap and a shell. The shell has an opening, and the end cap closes the opening to form a sealed space for accommodating the electrode assembly, electrolyte, and other substances. The shell may have one or more openings. One or more end caps may also be provided.

[0077] In some embodiments, the housing is provided with at least one electrode terminal, which is electrically connected to a tab of the electrode assembly. The electrode terminal can be connected to the tab via an adapter. The electrode terminal can be provided on an end cap or on the housing.

[0078] In some embodiments, the housing is provided with an explosion-proof valve for releasing the internal pressure of the battery cell.

[0079] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell or a battery cell of other shapes. Prismatic battery cells include square-shell battery cells, blade-shaped battery cells, and polygonal prismatic batteries. Polygonal prismatic batteries are, for example, hexagonal prismatic batteries.

[0080] The development of battery technology must take into account multiple design factors simultaneously, such as energy density, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery reliability must also be considered.

[0081] In some embodiments, a battery cell includes a housing, electrode terminals, an electrode assembly, and tabs. The housing includes a first wall, the electrode terminals are disposed on the first wall, the electrode assembly has tabs, and the tabs are disposed toward the first wall. An adapter electrically connects the electrode terminals and the tabs. Because the adapter electrically connects the electrode terminals and the tabs, an end of the adapter away from the electrode terminals is more susceptible to stress and deformation than other areas. When a battery cell experiences thermal runaway, a large amount of gas is generated within the battery cell, increasing the internal gas pressure and generating a large amount of heat. This gas pressure causes the first wall to significantly deform toward the outside of the battery cell. The heat can melt a first insulating member between the first wall and the adapter, increasing the distance between the adapter and the first wall. Gas can impact the adapter, causing the end of the adapter away from the electrode terminals to deform toward the first wall, which can easily lead to a contact short circuit between the adapter and the first wall, thereby causing a short circuit between the positive and negative electrodes and reducing the reliability of the battery.

[0082] 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 lowering the reliability of the battery, the present application provides a technical solution. The battery includes a battery cell and a first supporting component. The battery cell includes a shell, a first electrode terminal, an electrode assembly, a first adapter and a first insulating component. The shell includes a first wall, the first electrode terminal is arranged on the first wall, the electrode assembly is arranged in the shell, the end of the electrode assembly facing the first wall has a first tab, the first adapter electrically connects the first electrode terminal and the first tab, 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 facing away from the interior of the battery cell. 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.

[0083] 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 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 seek a passage with a larger space (for example, the deformation area of ​​the shell, the pressure relief area of ​​the pressure relief mechanism, etc.). There is less gas passing through 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 circuit between the first adapter and the first wall, making the battery more reliable.

[0084] The battery disclosed in the embodiments of the present application can be used, but is not limited to, in electrical equipment such as vehicles, ships, or aircraft. The battery disclosed in the present application can be used to form a power supply system for the electrical equipment.

[0085] The embodiments of the present application provide an electric device that uses a battery as a power source. 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. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0086] 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.

[0087] Please refer to FIG1 , which is a schematic diagram of the structure of a vehicle provided in some embodiments of the present application. Vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 can be provided at the bottom, head, or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can be used as an operating power source for the vehicle 1000 and for the circuit system of the vehicle 1000, such as for the working power requirements of the vehicle 1000 during startup, navigation, and operation.

[0088] The vehicle 1000 may further include a controller 200 and a motor 300 . 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 the vehicle 1000 during startup, navigation, and driving.

[0089] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also 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.

[0090] Please refer to Figure 2, which is an exploded schematic diagram of a battery provided in some embodiments of the present application. The battery 100 includes a housing 10 and a battery cell 20, with the battery cell 20 being housed within the housing 10. The housing 10 is used to provide a storage space for the battery cell 20, and the housing 10 can adopt a variety of structures. In some embodiments, the housing 10 can include a first sub-housing 11 and a second sub-housing 12, the first sub-housing 11 and the second sub-housing 12 covering each other, and the first sub-housing 11 and the second sub-housing 12 jointly defining a storage space for accommodating the battery cell 20. The second sub-housing 12 can be a hollow structure with one end open, and the first sub-housing 11 can be a plate-shaped structure, with the first sub-housing 11 covering the open side of the second sub-housing 12, so that the first sub-housing 11 and the second sub-housing 12 jointly define a storage space; the first sub-housing 11 and the second sub-housing 12 can also be hollow structures with one end open, with the open side of the first sub-housing 11 covering the open side of the second sub-housing 12.

[0091] 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 hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 20 may be housed within the housing 10. Alternatively, the battery 100 may be constructed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a complete battery module, and then housed within the housing 10. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0092] 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.

[0093] Please refer to Figures 3 to 6. Figure 3 is a perspective view of a partial structure of a battery provided in some embodiments of the present application. Figure 4 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application. Figure 5 is a cross-sectional view taken along the AA direction of Figure 4. Figure 6 is a partial enlarged view of point B of Figure 5. The present application provides a battery 100, which includes a battery cell 20 and a first support member 30. The battery cell 20 includes a housing 21, a first electrode terminal 23a, an electrode assembly 22, a first adapter 24, and a first insulating member 25. The housing 21 includes a first wall 213. The first electrode terminal 23a is disposed on the first wall 213. The electrode assembly 22 is disposed within the housing 21. The electrode assembly 22 has a first tab 221 at one end facing the first wall 213. The first adapter 24 electrically connects the first electrode terminal 23a and the first tab 221. The first insulating member 25 is disposed between the first wall 213 and the first adapter 24. The first support member 30 is disposed on a side of the first wall 213 away from the interior of the battery cell 20 . Along the thickness direction Z of the first wall, the projection of the first support member 30 overlaps with an end of the first adapter 24 away from the first electrode terminal 23 a .

[0094] 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.

[0095] The housing 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, electrolyte, and other components. The housing 211 and the end cap 212 can be independent components. The housing 211 can be of various shapes and sizes. Specifically, the shape of the housing 211 can be determined according to the specific shape and size of the electrode assembly 22. The housing 211 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0096] The end cap 212 is a component that covers the opening of the housing 211 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the end cap 212 can be adapted to the shape of the housing 211 to match the housing 211. Optionally, the end cap 212 can be made of a material with a certain hardness and strength (such as an aluminum alloy). This prevents the end cap 212 from deforming when subjected to compression or collision, thereby providing the battery cell 20 with greater structural strength and improved reliability. Functional components such as electrode terminals can be provided on the end cap 212. The electrode terminals can be used to electrically connect to the electrode assembly 22 to output or input electrical energy to the battery cell 20. The end cap 212 can also be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and this is not particularly limited in the embodiments of the present application. In some embodiments, an insulating structure can also be provided on the inner side of the end cap 212 to isolate the electrical connection components within the housing 211 from the end cap 212 to reduce the risk of short circuits. For example, the insulating structure may be plastic, rubber, or the like.

[0097] The first wall 213 may be the end cover 212 , or the first wall 213 may be a wall portion of the housing 211 .

[0098] The first electrode terminal 23 a may be a positive electrode terminal, or the first electrode terminal 23 a may be a negative electrode terminal.

[0099] In some embodiments, the first electrode terminal 23 a may be insulated and disposed on the first wall 213 .

[0100] The electrode assembly 22 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 22 may be contained 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. The separator is used to separate the positive electrode sheet and the negative electrode sheet to avoid internal 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 tab. The positive electrode tab and the negative electrode tab may be located together at one end of the main body or respectively at both ends of the main body.

[0101] The first electrode tab 221 is disposed at one end of the electrode assembly 22 facing the first wall 213 , so as to facilitate connection between the first electrode tab 221 and the first electrode terminal 23 a .

[0102] The first adapter 24 is a component for electrically connecting the first electrode terminal 23a and the first tab 221. The first electrode terminal 23a and the first tab 221 can be welded to the first adapter 24 to improve connection stability and provide stable current capacity.

[0103] In some embodiments, the thickness direction of the electrode assembly 22 may be perpendicular to the thickness direction Z of the first wall.

[0104] Viewed along the thickness direction Z of the first wall, the first supporting member 30 partially overlaps with the first adapter 24 , and the projection of one end of the first adapter 24 away from the first electrode terminal 23 a falls within the projection of the first supporting member 30 .

[0105] 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.

[0106] 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 .

[0107] 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 high temperature melts the first insulating component 25, 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 seek a passage with a larger space (for example, the deformation area of ​​the shell 21, the pressure relief area of ​​the pressure relief mechanism, etc.). There is less gas passing through the first adapter 24 and the first wall 213, which can reduce the risk of gas impacting the first adapter 24 and deforming it, 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.

[0108] 5 and 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 tab 221 .

[0109] Observed along the thickness direction Z of the first wall, the first support component 30 partially overlaps with the first electrode tab 221 , or the first support component 30 completely overlaps with the first electrode tab 221 , so that the first support component 30 and the first electrode tab 221 have a larger overlapping area.

[0110] 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 thermal runaway 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 short-circuiting with the first wall 213.

[0111] 5 and 6 , according to some embodiments of the present application, the first electrode tab 221 is spaced apart from the first electrode terminal 23 a along a first direction X, and the first direction X is perpendicular to the thickness direction Z of the first wall.

[0112] In the figure, the direction indicated by the letter X may be the first direction.

[0113] 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.

[0114] In the above scheme, the first pole tab 221 is spaced apart from the first electrode terminal 23a, which can reduce the risk of interference between the first pole tab 221 and the first electrode terminal 23a, and can reduce the space occupied by the first pole tab 221 and the first electrode terminal 23a 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.

[0115] 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, and the second connecting portion 242 is connected to the first electrode ear 221. 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.

[0116] The first connecting portion 241 and the second connecting portion 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 tab 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.

[0117] In the above scheme, the first connecting portion 241 and the second connecting portion 242 are respectively connected to the first electrode terminal 23a and the first tab 221, and the projection of the first supporting component 30 at least partially overlaps with the projection of the second connecting portion 242. The first supporting component 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 tab 221 moving toward the first wall 213 and short-circuiting with the first wall 213.

[0118] 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 .

[0119] “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.

[0120] 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.

[0121] 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 .

[0122] Referring to Figure 6, according to some embodiments of the present application, the first wall 213 includes a main body portion 2131 and a first protrusion 2132, the first protrusion 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 protrusion 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 protrusion 2132.

[0123] 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.

[0124] 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 interior of the battery cell 20 .

[0125] 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 interior 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.

[0126] 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 increase the energy density of the battery cell 20.

[0127] According to some embodiments of the present application, the first supporting component 30 is pressed against the first wall 213 .

[0128] 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).

[0129] In the above solution, the first support member 30 presses against the first wall 213 and can apply a force to the first wall 213 to further restrict the first wall 213 from deforming toward the outside of the battery cell 20 .

[0130] Please refer to Figure 5 and further to Figure 7, which is a partial enlarged view of point C in Figure 5. 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 further includes a second electrode tab 222. The second adapter 26 electrically connects the second electrode terminal 23b and the second electrode tab 222. 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 facing away from the interior of the battery cell 20. 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.

[0131] 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 .

[0132] 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 .

[0133] The second electrode terminal 23 b and the second electrode tab 222 may be welded to the second adapter 26 , respectively.

[0134] Viewed along the thickness direction Z of the first wall, the second supporting member 40 partially overlaps with the second adapter 26 , and the projection of the end of the second adapter 26 away from the second electrode terminal 23 b falls within the projection of the second supporting member 40 .

[0135] 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.

[0136] The first transition piece 24 is further used to insulate and isolate the second transition piece 26 from the first wall 213 .

[0137] 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.

[0138] 7 , in some embodiments, along the thickness direction Z of the first wall, the projection of the second support member 40 and the projection of the second tab 222 at least partially overlap.

[0139] Observed along the thickness direction Z of the first wall, the second support component 40 partially overlaps with the second electrode tab 222 , or the second support component 40 completely overlaps with the second electrode tab 222 , so that the second support component 40 and the second electrode tab 222 have a larger overlapping area.

[0140] In the above scheme, the projection of the second support component 40 at least partially overlaps with the projection of the second pole lug 222, and the second support component 40 and the second pole lug 222 can have a large overlapping area. After the battery cell 20 thermal runaway and the first insulating component 25 is thermally melted, the risk of the second pole lug 222 and the second adapter 26 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 second pole lug 222 and the second adapter 26 contacting and short-circuiting with the first wall 213.

[0141] 7 , in some embodiments, along the first direction X, the second electrode tab 222 is spaced apart from the second electrode terminal 23 b.

[0142] The second tab 222 and the second electrode terminal 23b are spaced apart in the first direction X. The distance between the second tab 222 and the second electrode terminal 23b in the first direction X can be large, which facilitates the connection between the second adapter 26 and the second tab 222 and the second electrode terminal 23b.

[0143] In the above scheme, the second pole tab 222 is spaced apart from the second electrode terminal 23b, which can reduce the risk of interference between the second pole tab 222 and the second electrode terminal 23b, and can reduce the space occupied by the second pole tab 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.

[0144] In some embodiments, the second adapter 26 includes a third connecting portion 261 and a fourth connecting portion 262 connected in sequence along the first direction X, the third connecting portion 261 is connected to the second electrode terminal 23b, and the fourth connecting portion 262 is connected to the second electrode ear 222. Along the thickness direction Z of the first wall, the projection of the second support part 40 at least partially overlaps with the projection of the fourth connecting portion 262.

[0145] The third connecting portion 261 and the fourth connecting portion 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 tab 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.

[0146] 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 tab 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 tab 222 moving toward the first wall 213 and short-circuiting in contact with the first wall 213.

[0147] 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 .

[0148] “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.

[0149] Along the first direction X, the size of the fourth connecting portion 262 may be larger than the size of the second electrode tab 222 , so that the second electrode tab 222 and the second adapter 26 have a larger connection area, thereby having a higher current flow capacity.

[0150] 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 .

[0151] 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.

[0152] 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.

[0153] 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 interior of the battery cell 20 .

[0154] 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 interior 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.

[0155] 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 increase the energy density of the battery cell 20.

[0156] In some embodiments, the second supporting member 40 presses against the first wall 213 .

[0157] 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).

[0158] 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 .

[0159] 5 , according to some embodiments of the present application, the first electrode terminal 23 a and the second electrode terminal 23 b are spaced apart along a first direction X, where the first direction X is perpendicular to the thickness direction Z of the first wall; along the first direction X, the first electrode terminal 23 a and the second electrode terminal 23 b are disposed between the first support member 30 and the second support member.

[0160] 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. The distance between the first electrode terminal 23a and the second electrode terminal 23b in the first direction X may be large.

[0161] 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 placement of the first electrode terminal 23 a and the second electrode terminal 23 b .

[0162] In the above solution, the first electrode terminal 23a and the second electrode terminal 23b are arranged between the first support member 30 and the second support member 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 a liquid injection hole, a pressure relief mechanism, etc.) can be arranged between the first electrode terminal 23a and the second electrode terminal 23b.

[0163] 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 .

[0164] 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 .

[0165] Stiffness is the ability of a material or structure to resist elastic deformation when subjected to stress.

[0166] In the above solution, the rigidity of the first support component 30 is greater than that of the first wall 213 . 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 .

[0167] In some embodiments, the second support member 40 has a stiffness greater than that of the first wall 213 .

[0168] In the above solution, the rigidity of the second support component 40 is greater than that of the first wall 213 . 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 .

[0169] 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 .

[0170] 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 staggered.

[0171] In the above solution, the projection of the first support 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 support member 30 and the first electrode terminal 23 a .

[0172] 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 .

[0173] 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 staggered.

[0174] 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 .

[0175] Please refer to Figures 3 and 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.

[0176] The second direction Y may be parallel to a thickness direction of the electrode assembly 22 .

[0177] 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 battery cells 20 share one first support component 30.

[0178] In the above solution, 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 the multiple battery cells 20 share one first support component 30, which simplifies the structure and reduces the number of parts.

[0179] In some embodiments, along the thickness direction Z of the first wall, a projection of the second support 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.

[0180] 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 battery cells 20 share one second support component 40.

[0181] In the above solution, multiple battery cells 20 are stacked along the second direction Y to facilitate the arrangement of more battery cells 20; the second support components 40 are arranged corresponding to the multiple battery cells 20, so that multiple battery cells 20 share one second support component 40, which simplifies the structure and reduces the number of parts.

[0182] 3 and 4 , according to some embodiments of the present application, along the second direction Y, the projection of the first supporting component 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.

[0183] 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.

[0184] In the above solution, the first support component 30 covers the entire first wall 213 in the second direction Y, so that the first support component 30 has a larger connection area with the first wall 213 in the second direction Y, thereby having a better restraining effect on the first wall 213.

[0185] 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.

[0186] 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.

[0187] 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, thereby having a better restraining effect on the first wall 213.

[0188] According to some embodiments of the present application, the thickness of the first support member 30 is greater than the thickness of the first wall 213 .

[0189] The thickness of the first support member 30 is parallel to the thickness of the first wall 213 .

[0190] 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 .

[0191] 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 .

[0192] In some embodiments, the thickness of the second support member 40 is greater than the thickness of the first wall 213 .

[0193] The thickness of the second supporting member 40 is parallel to the thickness of the first wall 213 .

[0194] 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 .

[0195] In the above solution, the thickness of the second support component 40 is greater than the thickness of the first wall 213 , and the second support component 40 has good anti-deformation ability, so that the second support component 40 has a good restraining effect on the first wall 213 .

[0196] Referring to FIG. 4 , according to some embodiments of the present application, the battery cell 20 further includes a pressure relief mechanism 27 , which is disposed on the first wall 213 .

[0197] The pressure relief mechanism 27 may be a weak area provided on the first wall 213 , a weak structure provided on the first wall 213 , or a pressure relief valve provided on the first wall 213 .

[0198] In some embodiments, when the internal pressure of the battery cell 20 increases to a threshold, the pressure relief mechanism 27 can be opened in time to relieve the pressure.

[0199] 4 , in some embodiments, along the first direction X, the pressure relief mechanism 27 is disposed between the first electrode terminal 23 a and the second electrode terminal 23 b .

[0200] In the above solution, 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.

[0201] 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 serves as the end cover 212 .

[0202] According to some embodiments of the present application, an electric 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 electric energy.

[0203] The power-consuming device may be any of the above-mentioned devices or systems using the battery 100 .

[0204] According to some embodiments of the present application, please refer to Figures 3 to 7. The embodiments of the present application provide a battery 100, which includes a first support component 30, a second support component 40 and a plurality of battery cells 20. The plurality of battery cells 20 are stacked along the second direction Y.

[0205] 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, on which the first and second electrode terminals 23a, 23b are disposed. The first and second electrode terminals 23a, 23b are spaced apart along a first direction X. The first adapter 24 includes a first connecting portion 241 and a second connecting portion 242, which are sequentially connected along the first direction X. The first connecting portion 241 is connected to the first electrode terminal 23a, and the second connecting portion 242 is connected to the first electrode tab 221. The second adapter 26 includes a third connecting portion 261 and a fourth connecting portion 262, which are sequentially connected along the first direction X. The third connecting portion 261 is connected to the second electrode terminal 23b, and the fourth connecting portion 262 is connected to the second electrode tab 222.

[0206] The first support member 30 and the second support member 40 are disposed on a side of the first wall 213 facing 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, with the first electrode terminal 23a being positioned closer to the first support member 30 than 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 overlaps 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 overlaps the projection of the first wall 213 in the thickness direction Z of the first wall.

[0207] Along the thickness direction Z of the first wall, the projection of the first support member 30 at least partially overlaps with the projection of the second connection portion 242 , and the projection of the second support member 40 at least partially overlaps with the projection of the fourth connection portion 262 .

[0208] 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 tab 221, as well as the second adapter 26 and the second pole tab 222 deforming toward the first wall 213 is reduced, thereby reducing the risk of short circuit between the positive and negative poles and improving the reliability of the battery 100.

[0209] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described 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 encompasses all technical solutions 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 within the housing, the electrode assembly has a first tab at one end facing the first wall, the first adapter electrically connects the first electrode terminal and the first tab, and the first insulating member is disposed between the first wall and the first adapter; The first supporting component is provided on a side of the first wall away from the interior of the battery cell. 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 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 or 3, 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, and the second connecting portion is connected to the first electrode tab. 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 or 5, characterized in that The first wall includes a main body and a first protrusion, the first protrusion protruding from the inner surface of the main body, a first recess formed on the outer surface of the first wall at a position corresponding to the first protrusion, and a portion of the first electrode terminal is located in the first recess; 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 any one of claims 1 to 6, characterized in that The first supporting component is pressed against the first wall.

8. The battery according to any one of claims 1 to 7, characterized in that The battery cell further includes a second electrode terminal and a second adapter, the second electrode terminal being disposed on the first wall, the electrode assembly further including a second tab at one end facing the first wall, the second adapter electrically connecting the second electrode terminal and the second tab, and the first insulating member being further disposed between the first wall and the second adapter; The battery further includes a second supporting component, which is arranged on a side of the first wall away from the interior of the battery cell. Along the thickness direction of the first wall, the projection of the second supporting component overlaps with an end of the second adapter away from the second electrode terminal.

9. The battery according to claim 8, characterized in that 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 disposed between the first support member and the second support portion.

10. The battery according to any one of claims 1 to 9, characterized in that The first supporting member has a stiffness greater than that of the first wall.

11. The battery according to any one of claims 1 to 10, 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 any one of claims 1 to 11, 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 the 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 any one of claims 1 to 13, characterized in that The thickness of the first supporting member is greater than the thickness of the first wall.

15. The battery according to any one of claims 1 to 14, 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 device, characterized in that: The invention comprises a battery according to any one of claims 1 to 15, wherein the battery is used to provide electrical energy.

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