Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, the battery comprises a box body, the box body is provided with a wall part, the wall part comprises a heat exchange plate and a cover plate which are stacked in a first direction, a through hole penetrating through the heat exchange plate and the cover plate is formed in the wall part, and the first direction is parallel to the thickness direction of the wall part; the battery monomers are accommodated in the box body; the power distribution assembly comprises a power distribution box and a connecting terminal, and the connecting terminal is inserted into the through hole and is connected with the power distribution box and the battery monomers; and the sealing assembly is located between the heat exchange plate and the cover plate and is configured to seal the through hole. The battery provided by the utility model has a relatively good sealing effect, and the probability of leakage of chemical components in the battery can be reduced.

Description

Technical Field

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

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

[0003] 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. Utility Model Content

[0004] 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.

[0005] In a first aspect, an embodiment of the present application provides a battery, the battery comprising a housing, a battery cell, a power distribution assembly and a sealing assembly. The housing has a wall portion, the wall portion comprises a heat exchange plate and a cover plate stacked along a first direction, and a through hole penetrating the heat exchange plate and the cover plate is provided on the wall portion, and the first direction is parallel to the thickness direction of the wall portion. The battery cell is accommodated in the housing. The power distribution assembly comprises a power distribution box and a connecting terminal, 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.

[0006] The battery provided in the embodiment of the present application is provided with through holes penetrating the heat exchange plate and the cover plate on the wall of the box body, so that the connection terminal can be plugged into the through hole and connected to the power distribution component and the battery cell, thereby ensuring the connection requirements between the battery cell and the power distribution component, and further ensuring the charging and discharging function of the battery. The correspondingly provided sealing component can achieve the sealing of the through holes of the heat exchange plate and the cover plate, so that the entire battery is in a sealed state, so that the environment inside the battery will not be disturbed by the external environment, providing guarantee for the normal operation of the battery, and can reduce the probability of leakage of chemical components inside the battery, thereby ensuring the reliability of the battery.

[0007] 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.

[0008] The battery provided in the embodiment of the present application can meet the need for plugging in multiple connection terminals in practical 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 guarantee.

[0009] 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, and along the first direction, the orthographic projection of each sealing component is arranged around the orthographic projection of one through hole.

[0010] The battery provided in the embodiment of the present application is arranged along the first direction, with the orthographic projection of each sealing component being arranged around the orthographic projection of a through hole. Each sealing component can seal a through hole while ensuring the basic sealing requirements. A suitable sealing component can be selected according to the shape and position of the through hole to meet the sealing level.

[0011] 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.

[0012] The battery provided in the embodiment of the present application can seal multiple through holes through a sealing assembly, and 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 difficulty and cost of assembly can be reduced, and when some of the sealing assemblies fail, only some of the sealing assemblies can be replaced to reduce maintenance costs.

[0013] 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.

[0014] The battery provided in the embodiment of the present application achieves sealing of multiple through holes through a sealing component, thereby improving the assembly efficiency of the sealing component.

[0015] In some embodiments, the sealing assembly includes a sealing ring, and along the first direction, the thickness dimension of the sealing ring is D1, and 0.2 mm≤D1≤5 mm.

[0016] 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.

[0017] In some embodiments, the sealing assembly includes a sealing gasket, and along the first direction, the sealing gasket has a thickness dimension D2, and 1mm≤D2≤20mm.

[0018] The battery provided in the embodiment of the present application, through the setting of the sealing gasket, has a good deformation amount, so it is convenient to adjust the thickness of the sealing component, making the setting of the sealing component more flexible.

[0019] In some embodiments, the sealing assembly includes a sealant, and along the first direction, the thickness dimension of the sealant is D3, and 0.2 mm≤D3≤5 mm.

[0020] 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 a 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.

[0021] In some embodiments, at least one of the cover plate and the heat exchange plate comprises 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.

[0022] The battery provided in the embodiment of the present application facilitates the positioning and installation of the sealing assembly by setting the sealing groove, and can enhance the firmness of the installation of the sealing assembly to prevent the sealing assembly from moving between the heat exchange plate and the cover plate and affecting the sealing performance.

[0023] In a second aspect, an embodiment of the present application further provides an electrical device, comprising any of the batteries described above.

[0024] The electric device provided in the embodiment of the present application can reduce the probability of performance degradation of the battery due to poor sealing and improve the user experience of the electric device by providing a sealing component in the battery.

[0025] 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

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 A schematic structural diagram of a vehicle embodiment of the present application;

[0028] Figure 2is an exploded schematic diagram of a battery embodiment of the present application;

[0029] Figure 3 is a top view schematic diagram of a battery embodiment of the present application;

[0030] Figure 4 is a schematic top view of a partial structure of a battery embodiment of the present application;

[0031] Figure 5 is a schematic top view of a partial structure of another embodiment of a battery of the present application;

[0032] Figure 6 is a cross-sectional schematic diagram of an embodiment of a battery of the present application;

[0033] Figure 7 This application Figure 6 Enlarged schematic diagram of part A.

[0034] The reference numerals in the specific implementation manner are as follows:

[0035] 1 vehicle;

[0036] 10 batteries; 20 motors; 30 controllers;

[0037] 100 cabinet; X first direction;

[0038] 110 wall portion; 111 heat exchange plate; 112 cover plate;

[0039] 200 battery cells;

[0040] 300 power distribution assembly; 310 power distribution box; 320 connection terminal;

[0041] 400 seal assembly. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0043] 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.

[0044] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0045] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0046] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified and 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. Moreover, a first feature being "above", "above" or "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 higher in level than the second feature. A first feature being "below", "below" or "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 lower in level than the second feature.

[0048] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0049] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0050] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0051] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc., which are not limited in the embodiments of the present application.

[0052] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development. However, in related technologies, 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.

[0053] In order to solve the problem in the related art 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 in the battery.

[0054] The battery provided in the embodiment of the present application is suitable for use in electrical devices using the battery.

[0055] 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. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc.; the spacecraft includes airplanes, rockets, space shuttles, and spacecrafts, etc.; the electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; the 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.

[0056] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0057] Please refer to Figure 1 As shown, a battery 10 is disposed inside the vehicle 1, and the battery 10 can be disposed at the bottom, head, or tail of the vehicle 1. The battery 10 can be used to power the vehicle 1, for example, the battery 10 can be used as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 30 and a motor 20, and the controller 30 is used to control the battery 10 to power the motor 20, for example, for starting, navigating, and operating power requirements of the vehicle 1 during driving.

[0058] In some embodiments of the present application, the battery 10 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0059] Please refer to Figures 2 to 7 As shown, an embodiment of the present application provides a battery 10, which includes a box 100, a battery cell 200, a power distribution assembly 300 and a sealing assembly 400. The box 100 has a wall portion 110, and the wall portion 110 includes a heat exchange plate 111 and a cover plate 112 stacked along a first direction X. The wall portion 110 is provided with a through hole penetrating the heat exchange plate 111 and the cover plate 112, and the first direction X is parallel to the thickness direction of the wall portion 110. The battery cell 200 is accommodated in the box 100. The power distribution assembly 300 includes a distribution box 310 and a connection terminal 320, and the connection terminal 320 is plugged 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.

[0060] The box 100 can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell 200. The box 100 can be used as a part of the chassis structure of the vehicle 1. For example, part of the box 100 can become at least a part of the floor of the vehicle 1, or part of the box 100 can become at least a part of the cross beam and longitudinal beam of the vehicle 1.

[0061] 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.

[0062] The sealing component 400 includes a sealing ring, a sealing pad and other structures. The material of the sealing component 400 includes but is not limited to a gelatinous material, a rubber material and the like.

[0063] The sealing assembly 400 is sandwiched between the heat exchange plate 111 and the cover plate 112 . If the shapes of the heat exchange plate 111 and the cover plate 112 along the first direction X are consistent, 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 .

[0064] 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.

[0065] Optionally, the 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, and the cover plate 112 and the distribution box 310 enclose a chamber, and the power distribution assembly 300 also includes electrical components, which are located inside the chamber and connected to the battery cell 200 through the connection terminal 320. The power distribution assembly 300 can control the battery 10. As an example, the power distribution assembly 300 plays a role in protecting the battery 10 and transmitting power during the charging and discharging process of the battery 10.

[0066] The power distribution assembly 300 can distribute high voltage to the battery 10. The power distribution assembly 300 adopts a centralized power distribution solution with a compact structure, convenient wiring layout, and convenient and quick maintenance. According to the system architecture requirements of different customers, the power distribution assembly 300 also needs to integrate some battery management system intelligent control management units to further simplify the complexity of power distribution of the entire power device.

[0067] The power distribution assembly 300 is located on the side of the cover plate 112 away from the heat exchange plate 111. When thermal runaway occurs inside the battery cell 200, the cover plate 112 and the heat exchange plate 111 can protect the power distribution assembly 300 and reduce the risk of high-temperature substances released from the battery cell 200 damaging electrical components. The heat exchange plate 111 can also exchange heat with the power distribution assembly 300 through the cover plate 112, thereby adjusting the temperature of the power distribution assembly 300. The power distribution assembly 300 is arranged outside the box 100, which can also improve the space utilization inside the battery 10 and facilitate the maintenance of the power distribution assembly 300.

[0068] The battery 10 provided in the embodiment of the present application is provided with a through hole penetrating the heat exchange plate 111 and the cover plate 112 on the wall 110 of the box body 100, so that the connection terminal 320 can 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 further ensuring the charging and discharging function of the battery 10. The correspondingly provided sealing assembly 400 can seal the through hole, so that the entire battery 10 is in a sealed state, so that the environment inside the battery 10 will not be disturbed by the external environment, providing guarantee for the normal operation of the battery 10, and can reduce the probability of leakage of chemical components inside the battery 10, thereby ensuring the reliability of the battery 10.

[0069] In some embodiments, there are a plurality of through holes, and the plurality of 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.

[0070] The number of through holes includes two, three or more.

[0071] 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.

[0072] The battery 10 provided in the embodiment of the present application can meet the plug-in requirements 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 to seal and surround the through hole, thereby improving the sealing guarantee.

[0073] 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.

[0074] For example, the number of the sealing components 400 may be one, the number of the through-hole may be one, or the number of the sealing components 400 may be three, the number of the through-hole may be three, and so on.

[0075] The intervals between the sealing components 400 can be adjusted according to actual conditions.

[0076] The battery 10 provided in the embodiment of the present application is arranged along the first direction X, with the orthographic projection of each sealing component 400 being arranged around the orthographic projection of a through hole. Under the premise of ensuring the basic sealing requirements, each sealing component 400 can seal a through hole, and a suitable sealing component 400 can be selected according to the shape and position of the through hole to meet the sealing level.

[0077] 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.

[0078] The number of sealing assemblies 400 includes one, two, and the like.

[0079] 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.

[0080] 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 difficulty and cost of assembly 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.

[0081] 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.

[0082] The number of the plurality of through holes includes two or more.

[0083] Exemplarily, when there is one sealing component 400 and three through holes, sealing can be achieved along the first direction X by surrounding the orthographic projections of the three through holes with the orthographic projection of one sealing component 400 .

[0084] 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 .

[0085] In some embodiments, the sealing assembly 400 includes a sealing ring, and along the first direction X, the thickness dimension of the sealing ring is D1, and 0.2 mm≤D1≤5 mm.

[0086] The materials of the sealing ring include hard silicone, rubber, etc., and the deformation of the sealing ring is small.

[0087] For example, the thickness of the sealing ring can be 0.2mm, 1mm, 2mm, 3mm, 4mm, and 5mm. Optionally, the thickness of the sealing ring is 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 meet the sealing requirements without taking up too much space; the thickness of the sealing ring can be 5mm, which can meet the sealing requirements and provide a buffering effect between the heat exchange plate 111 and the cover plate 112, thereby reducing mechanical damage.

[0088] The battery 10 provided in the embodiment of the present application can ensure good sealing performance after adding the sealing assembly 400 through the provision of the sealing ring, and the sealing ring structure is easy to install.

[0089] In some embodiments, the sealing assembly 400 includes a sealing gasket having a thickness dimension D2, and 1 mm ≤ D2 ≤ 20 mm.

[0090] The material of the sealing gasket includes silicone series foam material and the like.

[0091] 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, and 20 mm. For example, the thickness of the sealing gasket is 1 mm, which can save space for the sealing assembly 400 and ensure the sealing effect; the thickness of the sealing gasket is 10 mm, which can support the heat exchange plate 111 and the cover plate 112 and provide a certain buffering effect; the thickness of the sealing gasket is 20 mm, which can not only play a good sealing effect, but also improve the shock absorption effect between the heat exchange plate 111 and the cover plate 112.

[0092] The battery 10 provided in the embodiment of the present application, through the setting of the sealing gasket, has a good deformation amount, so it is convenient to adjust the thickness of the sealing component 400, so that the setting of the sealing component 400 is more flexible.

[0093] In some embodiments, the sealing assembly 400 includes a sealant structure, and along the first direction X, the thickness dimension of the sealant is D3, and 0.2 mm≤D3≤5 mm.

[0094] Optionally, the thickness of the sealant can be 0.2mm, 1mm, 2mm, 3mm, 4mm, or 5mm along the first direction X. For example, when the thickness of the sealant is 0.2mm, the space occupied by the sealant between the heat exchange plate 111 and the cover plate 112 can be reduced, making the battery 10 compact; when the thickness of the sealant is 3mm, it will not occupy too much space between the heat exchange plate 111 and the cover plate 112, and can provide certain support and buffering between the two; when the thickness of the sealant is 5mm, it can not only exert a reliable sealing effect, but also provide support between the heat exchange plate 111 and the cover plate 112.

[0095] 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 a fluid during use, it is convenient to adjust the shape of the sealant, 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.

[0096] 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.

[0097] 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 assembly 400. The sealing groove and the sealing assembly 400 may be arranged in an interference fit.

[0098] The battery 10 provided in the embodiment of the present application facilitates the positioning and installation of the sealing assembly 400 through the setting of the sealing groove, and can enhance the firmness of the installation of the sealing assembly 400 to prevent the sealing assembly 400 from moving between the heat exchange plate 111 and the cover plate 112 and affecting the sealing performance.

[0099] An embodiment of the present application further provides an electrical device, comprising any of the batteries 10 described above.

[0100] The electric device provided in the embodiment of the present application can reduce the probability of performance degradation of the battery 10 due to poor sealing, thereby improving the user experience of the electric device, by providing a sealing assembly 400 in the battery 10.

[0101] 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 replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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, characterized in that: include: A box body having a wall portion, wherein the wall portion comprises a heat exchange plate and a cover plate stacked along a first direction, and the wall portion is provided with a through hole penetrating the heat exchange plate and the cover plate, wherein the first direction is parallel to a thickness direction of the wall portion; A battery cell is contained in the box; A power distribution assembly, comprising a power distribution box and a connection terminal, wherein the connection 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, characterized in that 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, characterized in that The number of the sealing components is consistent with the number of the 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 of the through holes.

4. The battery according to claim 2, characterized in that 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, characterized in that 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, characterized in that The sealing assembly includes a sealing ring. Along the first direction, the thickness dimension of the sealing ring is D1, and 0.2mm≤D1≤5mm.

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

10. An electrical device, characterized in that: A battery comprising the battery according to any one of claims 1 to 9.

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