Battery and electric device

Abstract

A battery (10) and an electric device. The battery (10) comprises: a case (100) having a wall portion (110), wherein the wall portion (110) comprises a heat exchange plate (111) and a cover plate (112), which are stacked in a first direction, through holes passing through the heat exchange plate (111) and the cover plate (112) are provided in the wall portion (110), and the first direction is parallel to the direction of thickness of the wall portion (110); a battery cell (200) accommodated in the case (100); a power distribution assembly (300), which comprises a power distribution box (310) and connection terminals (320), wherein the connection terminals (320) are inserted into the through holes and are connected to the power distribution box (310) and the battery cell (200); and a sealing assembly (400), which is located between the heat exchange plate (111) and the cover plate (112) and is configured to seal the through holes. The battery (10) has a relatively good sealing effect, and the probability of a leakage of a chemical component inside the battery (10) can be reduced.

Description

Batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202420433311.6, filed on March 6, 2024, entitled “Battery and Electrical Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0004] 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.

[0005] However, in the related art, the sealing effect inside the battery is poor, which easily causes the chemical components inside the battery to leak, affecting the reliability of the battery.

[0006] Utility Model Content

[0007] In view of the above problems, the present application provides a battery and an electrical device, wherein the battery has a good sealing effect, can reduce the probability of leakage of chemical components inside the battery, and ensure the reliability of the battery.

[0008] In a first aspect, embodiments of the present application provide a battery comprising a housing, battery cells, a power distribution assembly, and a sealing assembly. The housing comprises a wall portion, comprising heat exchange plates and a cover plate stacked along a first direction. The wall portion is provided with through-holes extending through the heat exchange plates and the cover plate, with the first direction being parallel to the thickness of the wall portion. The battery cells are housed within the housing. The power distribution assembly comprises a power distribution box and connection terminals, which are plugged into the through-holes and connected to the power distribution box and the battery cells. The sealing assembly is positioned between the heat exchange plates and the cover plate and is configured to seal the through-holes.

[0009] The battery provided in the embodiments of the present application has through-holes provided on the wall of the housing, penetrating the heat exchange plate and the cover plate, so that the connection terminals can be plugged into the through-holes and connected to the power distribution assembly and the battery cells, ensuring the connection requirements between the battery cells and the power distribution assembly, and thus ensuring the battery's charge and discharge functions. The correspondingly provided sealing assembly can seal the through-holes between the heat exchange plate and the cover plate, thereby maintaining a sealed state for the entire battery. This protects the internal environment of the battery from external interference, provides for the normal operation of the battery, and reduces the probability of chemical leakage within the battery, thereby ensuring the battery's reliability.

[0010] In some embodiments, there are multiple through holes, and the multiple through holes are arranged at intervals. Along the first direction, the orthographic projection of the sealing component is arranged around the orthographic projection of each through hole.

[0011] The battery provided in the embodiment of the present application can meet the need for plugging in multiple connection terminals in actual applications by setting a plurality of through holes, thereby ensuring the electrical connection requirements between the distribution box and the battery cell. Secondly, along the first direction, the orthographic projection of the sealing component is set around the orthographic projection of each through hole to seal and surround the through hole, thereby improving the sealing protection.

[0012] In some embodiments, the number of sealing components is consistent with the number of through holes, and the plurality of sealing components are arranged at intervals. Along the first direction, the orthographic projection of each sealing component is arranged around the orthographic projection of one through hole.

[0013] The battery provided in the embodiment of the present application is arranged along a first direction, with the orthographic projection of each sealing component surrounding the orthographic projection of a through hole. Under the premise of ensuring the basic sealing requirements, each sealing component can seal a through hole, and a suitable sealing component can be selected according to the shape and position of the through hole to meet the sealing level.

[0014] In some embodiments, the number of sealing components is less than the number of through holes, and along the first direction, the orthographic projection of at least one sealing component is arranged around the orthographic projections of at least two through holes.

[0015] The battery provided in the embodiment of the present application can be provided with a sealing assembly to seal multiple through holes. Adjacent through holes can be placed in the same sealing assembly according to the distribution of the through holes. While ensuring the sealing requirements, the assembly difficulty and cost can be reduced. Moreover, when some of the sealing assemblies fail, only some of the sealing assemblies need to be replaced, thereby reducing maintenance costs.

[0016] In some embodiments, the number of sealing components is one, and along the first direction, the orthographic projection of the sealing component is arranged around the orthographic projections of multiple through holes; or, the number of sealing components is more than two, and along the first direction, at least one sealing component is arranged around the orthographic projections of multiple through holes.

[0017] The battery provided in the embodiment of the present application achieves sealing of multiple through holes through a sealing assembly, thereby improving the assembly efficiency of the sealing assembly.

[0018] In some embodiments, the sealing assembly includes a sealing ring. Along the first direction, the sealing ring has a thickness dimension D1, and 0.2 mm ≤ D1 ≤ 5 mm.

[0019] The battery provided in the embodiment of the present application can ensure good sealing performance after adding a sealing component by disposing a sealing ring, and the sealing ring structure is easy to install.

[0020] In some embodiments, the sealing assembly includes a sealing gasket, and along the first direction, the sealing gasket has a thickness dimension D2, and 1 mm ≤ D2 ≤ 20 mm.

[0021] The battery provided in the embodiment of the present application, through the provision of a sealing gasket, has a good deformation amount, which facilitates adjustment of the thickness of the sealing assembly, making the provision of the sealing assembly more flexible.

[0022] In some embodiments, the sealing assembly includes a sealant, and along the first direction, the sealant has a thickness dimension D3, and 0.2 mm ≤ D3 ≤ 5 mm.

[0023] The battery provided in the embodiment of the present application is installed through a gluing process when the sealing component is installed through the setting of the sealant. Since the sealant is fluid during use, the shape of the sealant can be easily adjusted, and the amount of sealant used can be adjusted. The sealant can also fix the position of the heat exchange plate and the cover plate.

[0024] In some embodiments, at least one of the cover plate and the heat exchange plate includes a sealing groove matching the shape of the sealing assembly, and at least a portion of the sealing assembly is located in the sealing groove.

[0025] The battery provided in the embodiment of the present application facilitates the positioning and installation of the sealing assembly through the provision of the sealing groove, and can enhance the firmness of the installation of the sealing assembly, thereby preventing the sealing assembly from moving between the heat exchange plate and the cover plate and affecting the sealing performance.

[0026] In a second aspect, an embodiment of the present application further provides an electrical device comprising any of the above-mentioned batteries.

[0027] The electric device provided in the embodiment of the present application can reduce the probability of battery performance degradation due to loose sealing and improve the user experience of the electric device by providing a sealing component in the battery.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0030] FIG1 is a schematic structural diagram of a vehicle according to an embodiment of the present application;

[0031] FIG2 is an exploded schematic diagram of an embodiment of a battery of the present application;

[0032] FIG3 is a schematic top view of an embodiment of a battery of the present application;

[0033] FIG4 is a schematic top view of a portion of the structure of an embodiment of a battery of the present application;

[0034] FIG5 is a schematic top view of a partial structure of another embodiment of a battery of the present application;

[0035] FIG6 is a schematic cross-sectional view of an embodiment of a battery of the present application;

[0036] FIG7 is an enlarged schematic diagram of portion A in FIG6 of the present application.

[0037] The accompanying drawings in the specific implementation manner are as follows:

[0038] 1 vehicle;

[0039] 10 batteries; 20 motors; 30 controllers;

[0040] 100 cabinet; X first direction;

[0041] 110 wall portion; 111 heat exchange plate; 112 cover plate;

[0042] 200 battery cells;

[0043] 300 power distribution assembly; 310 power distribution box; 320 connection terminal;

[0044] 400 sealing components. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0046] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0047] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0048] In addition, the technical terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0049] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0050] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0052] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. A battery generally includes a casing that encloses one or more battery cells. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0053] In the embodiment of the present application, the battery cell may be a secondary battery cell. A secondary battery cell refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0054] The battery cell can be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-hydrogen battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc., and the embodiments of the present application are not limited to this.

[0055] 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 a crucial component of this sustainable development. Battery technology is a crucial factor in the development of electric vehicles. However, existing technologies often suffer from poor internal sealing, which can easily lead to leakage of chemical components within the battery, compromising reliability.

[0056] In order to solve the problem in related technologies that the sealing effect inside the battery is poor, which easily causes the chemical components inside the battery to leak, it has been found through research that the above problem can be solved by providing a sealing component inside the battery.

[0057] The battery provided in the embodiments of the present application is suitable for use in electrical devices that use batteries.

[0058] The electrical devices mentioned in the embodiments of the present application may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0059] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device.

[0060] Referring to Figure 1 , a battery 10 is installed within vehicle 1. Battery 10 can be located at the bottom, front, or rear of vehicle 1. Battery 10 can be used to power vehicle 1, for example, as an operating power source for vehicle 1. Vehicle 1 also includes a controller 30 and a motor 20. Controller 30 controls battery 10 to power motor 20, for example, to meet the power requirements of vehicle 1 during startup, navigation, and driving.

[0061] In some embodiments of the present application, the battery 10 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0062] Referring to Figures 2 to 7, an embodiment of the present application provides a battery 10, which includes a housing 100, a battery cell 200, a power distribution assembly 300, and a sealing assembly 400. The housing 100 has a wall portion 110, which includes heat exchange plates 111 and a cover plate 112 stacked along a first direction X. The wall portion 110 is provided with through holes that penetrate the heat exchange plates 111 and the cover plate 112. The first direction X is parallel to the thickness direction of the wall portion 110. The battery cell 200 is accommodated in the housing 100. The power distribution assembly 300 includes a distribution box 310 and a connection terminal 320. The connection terminal 320 is inserted into the through hole and connected to the distribution box 310 and the battery cell 200. The sealing assembly 400 is located between the heat exchange plate 111 and the cover plate 112 and is configured to seal the through hole.

[0063] The housing 100 can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells 200. The housing 100 can serve as part of the chassis structure of the vehicle 1. For example, a portion of the housing 100 can form at least a portion of the floor of the vehicle 1, or a portion of the housing 100 can form at least a portion of the cross member or longitudinal member of the vehicle 1.

[0064] The number of through holes includes one, two, or even more, and the shape of the through holes includes but is not limited to rectangle, circle, or other special shapes, etc. Optionally, the shape of the connection terminal 320 matches the shape of the through hole.

[0065] The sealing assembly 400 includes a sealing ring, a sealing gasket, etc. The material of the sealing assembly 400 includes but is not limited to a gel material, a rubber material, etc.

[0066] The sealing assembly 400 is sandwiched between the heat exchange plate 111 and the cover plate 112 . If the heat exchange plate 111 and the cover plate 112 have the same shape along the first direction X, the shape of the sealing assembly 400 may also be consistent with the shape of the heat exchange plate 111 or the cover plate 112 .

[0067] In some embodiments, a flow channel for a heat exchange medium to flow is provided inside the heat exchange plate 111. As an example, the heat exchange medium may be a liquid or a gas, such as water.

[0068] Optionally, the power distribution box 310 of the power distribution assembly 300 is located on a side of the cover plate 112 away from the heat exchange plate 111. The cover plate 112 and the power distribution box 310 enclose a chamber. The power distribution assembly 300 also includes electrical components located within the chamber and connected to the battery cells 200 via connection terminals 320. The power distribution assembly 300 can control the battery 10. As an example, the power distribution assembly 300 protects the battery 10 and transmits power during the charging and discharging process of the battery 10.

[0069] The power distribution assembly 300 distributes high voltage to the battery 10. It utilizes a centralized power distribution solution, resulting in a compact structure, convenient wiring layout, and quick and easy maintenance. Depending on the system architecture requirements of different customers, the power distribution assembly 300 may also integrate portions of the battery management system's intelligent control and management unit, further simplifying the complexity of power distribution across the entire electrical device.

[0070] The power distribution assembly 300 is located on the side of the cover plate 112 away from the heat exchange plate 111. In the event of thermal runaway within the battery cell 200, the cover plate 112 and heat exchange plate 111 protect the power distribution assembly 300, reducing the risk of damage to electrical components from high-temperature substances released from the battery cell 200. The heat exchange plate 111 also exchanges heat with the power distribution assembly 300 through the cover plate 112, thereby regulating the temperature of the power distribution assembly 300. Positioning the power distribution assembly 300 outside the housing 100 also improves space utilization within the battery 10 and facilitates maintenance of the power distribution assembly 300.

[0071] The battery 10 provided in the embodiment of the present application has a through hole provided on the wall 110 of the housing 100, which penetrates the heat exchange plate 111 and the cover plate 112. This allows the connection terminal 320 to be plugged into the through hole and connected to the power distribution assembly 300 and the battery cell 200, thereby ensuring the connection requirements between the battery cell 200 and the power distribution assembly 300 and thereby ensuring the charge and discharge functions of the battery 10. The corresponding sealing assembly 400 is configured to seal the through hole, thereby maintaining the entire battery 10 in a sealed state, preventing the environment inside the battery 10 from being disturbed by the external environment, providing protection for the normal operation of the battery 10, and reducing the probability of chemical leakage within the battery 10, thereby ensuring the reliability of the battery 10.

[0072] In some embodiments, there are multiple through holes, and the multiple through holes are arranged at intervals. Along the first direction X, the orthographic projection of the sealing assembly 400 is arranged around the orthographic projection of each through hole.

[0073] The number of through holes includes two, three or more.

[0074] The number of the sealing components 400 may also be one, two, or more, as long as the orthographic projection of the sealing components 400 can be arranged around the orthographic projection of each through hole.

[0075] The battery 10 provided in the embodiment of the present application can meet the plug-in needs of multiple connection terminals 320 in actual applications by setting a plurality of through holes, thereby ensuring the electrical connection requirements between the distribution box 310 and the battery cell 200. Secondly, along the first direction X, the orthographic projection of the sealing assembly 400 is set around the orthographic projection of each through hole, which can seal and surround the through hole, thereby improving the sealing protection.

[0076] In some embodiments, the number of sealing components 400 is consistent with the number of through holes, and the plurality of sealing components 400 are arranged at intervals. Along the first direction X, the orthographic projection of each sealing component 400 is arranged around the orthographic projection of one through hole.

[0077] For example, the number of the sealing components 400 may be one, and the number of the through-hole may be one, or the number of the sealing components 400 may be three, and the number of the through-holes may be three, and so on.

[0078] The intervals between the sealing components 400 can be adjusted according to actual conditions.

[0079] The battery 10 provided in the embodiment of the present application is arranged such that the orthographic projection of each sealing component 400 is arranged around the orthographic projection of a through hole along the first direction X. Therefore, each sealing component 400 can seal a through hole while ensuring the basic sealing requirements. A suitable sealing component 400 can be selected according to the shape and position of the through hole to meet the sealing level.

[0080] In some embodiments, the number of sealing components 400 is less than the number of through holes, and along the first direction X, the orthographic projection of at least one sealing component 400 is disposed around the orthographic projections of at least two through holes.

[0081] The number of sealing assemblies 400 includes one, two, and the like.

[0082] Exemplarily, when there is one sealing component 400 and there are three through holes, sealing can be achieved along the first direction X by arranging the orthographic projection of one sealing component 400 around the orthographic projections of the three through holes; when there are two sealing components 400 and there are three through holes, sealing can be achieved along the first direction X by arranging the orthographic projection of one sealing component 400 around the orthographic projections of two adjacent through holes and arranging the orthographic projection of another sealing component 400 around the orthographic projection of the remaining through hole.

[0083] The battery 10 provided in the embodiment of the present application can be configured to seal multiple through holes through a sealing assembly 400. Adjacent through holes can be placed in the same sealing assembly 400 according to the distribution of the through holes. While ensuring the sealing requirements, the assembly difficulty and cost can be reduced. Moreover, when some of the sealing assemblies 400 fail, only some of the sealing assemblies 400 can be replaced, thereby reducing maintenance costs.

[0084] In some embodiments, the number of sealing components 400 is one, and along the first direction X, the orthographic projection of the sealing component 400 is arranged around the orthographic projections of multiple through holes; or, the number of sealing components 400 is more than two, and along the first direction X, at least one sealing component 400 is arranged around the orthographic projections of multiple through holes.

[0085] The number of the plurality of through holes includes two or more.

[0086] For example, when there is one sealing assembly 400 and three through holes, sealing can be achieved along the first direction X by having the orthographic projection of one sealing assembly 400 surround the orthographic projections of the three through holes.

[0087] The battery 10 provided in the embodiment of the present application achieves sealing of multiple through holes through a sealing assembly 400 , thereby improving the assembly efficiency of the sealing assembly 400 .

[0088] In some embodiments, the sealing assembly 400 includes a sealing ring. Along the first direction X, the sealing ring has a thickness dimension D1 , and 0.2 mm ≤ D1 ≤ 5 mm.

[0089] The materials of the sealing ring include hard silicone, rubber, etc., and the deformation of the sealing ring is small.

[0090] For example, the thickness of the sealing ring can be 0.2mm, 1mm, 2mm, 3mm, 4mm, or 5mm. Alternatively, the thickness of the sealing ring can be 2mm, which can meet the sealing requirements without taking up too much space, thereby improving space utilization; the thickness of the sealing ring can be 0.2mm, which can ensure the sealing requirements without taking up too much space; and the thickness of the sealing ring can be 5mm, which can meet the sealing requirements while providing a buffer between the heat exchange plate 111 and the cover plate 112, reducing damage caused by mechanical forces.

[0091] The battery 10 provided in the embodiment of the present application can ensure good sealing performance after adding the sealing assembly 400 by providing the sealing ring, and the sealing ring structure is easy to install.

[0092] In some embodiments, the sealing assembly 400 includes a sealing gasket having a thickness dimension D2, and 1 mm ≤ D2 ≤ 20 mm.

[0093] The materials of the sealing gasket include silicone series foam materials, etc.

[0094] Optionally, along the first direction X, the thickness of the sealing gasket is between 1 mm and 20 mm. For example, the thickness of the sealing gasket is 1 mm, 5 mm, 10 mm, 15 mm, or 20 mm. For example, a sealing gasket with a thickness of 1 mm can save space in the sealing assembly 400 while ensuring a good sealing effect; a sealing gasket with a thickness of 10 mm can support the heat exchange plate 111 and the cover plate 112 and provide a certain cushioning effect; a sealing gasket with a thickness of 20 mm can achieve a good sealing effect and improve the shock absorption effect between the heat exchange plate 111 and the cover plate 112.

[0095] The battery 10 provided in the embodiment of the present application, through the setting of the sealing gasket, has a good deformation amount, which facilitates the adjustment of the thickness of the sealing component 400, making the setting of the sealing component 400 more flexible.

[0096] In some embodiments, the sealing assembly 400 includes a sealant structure. Along the first direction X, the sealant has a thickness D3, and 0.2 mm ≤ D3 ≤ 5 mm.

[0097] Optionally, the thickness of the sealant along the first direction X can be 0.2 mm, 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm. For example, when the sealant is 0.2 mm thick, it can reduce the space occupied by the sealant between the heat exchange plate 111 and the cover plate 112, making the battery 10 compact. When the sealant is 3 mm thick, it does not occupy too much space between the heat exchange plate 111 and the cover plate 112, and can provide a certain amount of support and cushioning between the two. When the sealant is 5 mm thick, it can not only achieve a reliable sealing effect, but also provide support between the heat exchange plate 111 and the cover plate 112.

[0098] The battery 10 provided in the embodiment of the present application is installed through a gluing process when the sealing assembly 400 is installed through the setting of the sealant. Since the sealant is fluid during use, the shape of the sealant can be easily adjusted, and the amount of sealant used can be adjusted. The sealant can also fix the position of the heat exchange plate 111 and the cover plate 112.

[0099] In some embodiments, at least one of the cover plate 112 and the heat exchange plate 111 includes a sealing groove that matches the shape of the sealing assembly 400 , and at least a portion of the sealing assembly 400 is located in the sealing groove.

[0100] The shape of the sealing groove includes an annular groove, a rectangular groove, etc. The shape of the sealing groove needs to match the shape of the sealing component 400. The sealing groove and the sealing component 400 can be arranged in an interference fit.

[0101] The battery 10 provided in the embodiment of the present application facilitates the positioning and installation of the sealing assembly 400 through the provision of the sealing groove, and can enhance the firmness of the installation of the sealing assembly 400, thereby preventing the sealing assembly 400 from moving between the heat exchange plate 111 and the cover plate 112 and affecting the sealing performance.

[0102] An embodiment of the present application further provides an electrical device comprising any of the above-mentioned batteries 10.

[0103] The electrical device provided in the embodiment of the present application can reduce the probability of performance degradation of the battery 10 due to loose sealing by providing the sealing assembly 400 in the battery 10, thereby improving the user experience of the electrical device.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery comprising: The box body has a wall portion, the wall portion includes heat exchange plates and a cover plate stacked along a first direction, the wall portion is provided with a through hole penetrating the heat exchange plates and the cover plate, and the first direction is parallel to the thickness direction of the wall portion; A battery cell is housed in the box; A power distribution assembly, comprising a power distribution box and a connecting terminal, wherein the connecting terminal is plugged into the through hole and connected to the power distribution box and the battery cell; The sealing assembly is located between the heat exchange plate and the cover plate and is configured to seal the through hole.

2. The battery according to claim 1, wherein There are multiple through holes, and the multiple through holes are arranged at intervals. Along the first direction, the orthographic projection of the sealing component is arranged around the orthographic projection of each of the through holes.

3. The battery according to claim 2, wherein The number of the sealing components is consistent with the number of the through holes. The plurality of sealing components are arranged at intervals. Along the first direction, the orthographic projection of each sealing component is arranged around the orthographic projection of one of the through holes.

4. The battery according to claim 2, wherein The number of the sealing components is less than the number of the through holes, and along the first direction, the orthographic projections of the sealing components are arranged around the orthographic projections of at least two of the through holes.

5. The battery according to claim 4, wherein The number of the sealing component is one, and along the first direction, the orthographic projection of the sealing component is arranged around the orthographic projections of the plurality of through holes; Alternatively, the number of the sealing components is more than two, and along the first direction, at least one of the sealing components is arranged around the orthographic projections of the plurality of through holes.

6. The battery according to any one of claims 1 to 5, wherein The sealing assembly includes a sealing ring. Along the first direction, the sealing ring has a thickness dimension D1, and 0.2 mm ≤ D1 ≤ 5 mm.

7. The battery according to any one of claims 1 to 5, wherein The sealing assembly includes a sealing gasket. Along the first direction, the sealing gasket has a thickness dimension D2, and 1mm≤D2≤20mm.

8. The battery according to any one of claims 1 to 5, wherein The sealing assembly includes a sealant. Along the first direction, the sealant has a thickness dimension D3, and 0.2 mm ≤ D3 ≤ 5 mm.

9. The battery according to any one of claims 1 to 5, wherein At least one of the cover plate and the heat exchange plate comprises a sealing groove having a shape matching that of the sealing assembly, and at least a portion of the sealing assembly is located in the sealing groove.

10. An electrical device comprising the battery according to any one of claims 1 to 9.

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