Battery and electric apparatus

Abstract

A battery (100) and an electric apparatus. The battery (100) comprises a case (20), battery cells (10), a power distribution box (30), and sealing members (40). The case (20) comprises a case wall (21), and through holes (22) are formed in the case wall (21). The battery cells (10) are accommodated in the case (20). The power distribution box (30) comprises a housing (31) and adapter bases (32), the housing (31) is arranged on the outer side of the case wall (21) and is connected to the case wall (21), the adapter bases (32) are connected to the housing (31), and at least part of each of the adapter bases (32) is accommodated in the corresponding through hole (22). The sealing members (40) are arranged between the case wall (21) and the housing (31) and surround the through holes (22). According to the provided battery (100), the adapter bases (32) are directly connected to the housing (31), and the power distribution box (30) provided with the adapter bases (32) is connected to the case (20), such that the connection strength between the adapter bases (32) and the power distribution box (30) is satisfied, the probability of contaminants and the like entering the power distribution box (30) via the adapter bases (32) is reduced, the sealing performance of the power distribution box (30) and the adapter bases (32) is improved, and the assembly degree of the power distribution box (30) and the case (20) is also simplified, thereby improving the assembly efficiency of the battery (100).

Description

Batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420670107.6, filed on April 2, 2024, entitled “Battery and Electrical Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The application relates to the field of battery production technology, in particular to batteries and electrical devices. Background Art

[0004] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0005] In the development of battery technology, how to improve battery reliability is a technical problem that needs to be solved urgently.

[0006] Summary of the Invention

[0007] The present application provides a battery and an electrical device, aiming to improve the reliability of the battery to a certain extent.

[0008] In the first aspect, the present application proposes a battery, which includes a case, a battery cell, a distribution box and a seal; the case includes a box wall, which is provided with a through hole; the battery cell is accommodated in the case; the distribution box includes a shell and an adapter, the shell is arranged on the outside of the box wall and connected to the box wall, the adapter is connected to the shell, and at least a portion of the adapter is accommodated in the through hole; the seal is arranged between the box wall and the shell and surrounds the through hole.

[0009] The battery provided in the present application includes a housing, a battery cell, a distribution box and a seal. The housing is arranged on the outside of the housing wall and connected to the housing wall, that is, the distribution box is arranged on the outside of the housing, and the distribution box and the housing are independently arranged. The high-temperature gas leaked by the thermal failure of the battery cell will not directly enter the distribution box, thereby reducing the thermal damage to the distribution box. The adapter is directly connected to the housing, and the distribution box with the adapter is connected to the housing. This not only meets the connection strength between the adapter and the distribution box, but also reduces the probability of pollutants entering the distribution box through the adapter, improves the sealing of the two, and simplifies the assembly degree of the distribution box and the housing, thereby improving the assembly efficiency of the battery. The seal is arranged between the housing wall and the housing and surrounds the through hole to achieve sealing between the adapter and the housing, reducing the risk of external pollutants entering the housing through the through hole, thereby improving the reliability of the battery.

[0010] According to one embodiment of the present application, the housing and the adapter are integrally connected.

[0011] In these optional embodiments, the shell and the adapter are integrated into one body, so that the shell and the adapter have a higher connection strength, and the shell and the adapter have a higher sealing performance. The two are not easy to fall off when subjected to external force, and the reliability of the battery is improved.

[0012] According to one embodiment of the present application, the adapter seat includes a first adapter portion and a second adapter portion, the first adapter portion is connected to the shell and extends into the shell, and the second adapter portion is connected to the first adapter portion and extends into the through hole.

[0013] In these optional embodiments, the adapter includes a first adapter portion and a second adapter portion. The first adapter portion extends into the shell to connect with the electrical components in the shell, and the second adapter portion extends into the through hole to connect with the components in the box, so as to facilitate the connection between the distribution box and the box.

[0014] According to one embodiment of the present application, the orthographic projection of the shell on the box wall covers the orthographic projection of the sealing member on the box wall.

[0015] In these optional embodiments, such configuration enables the sealing member to have an appropriate size, which not only achieves sealing between the adapter and the box body, but also reduces the manufacturing cost of the sealing member.

[0016] According to one embodiment of the present application, a surface of the shell facing the box wall is provided with a protrusion, and the protrusion is used to limit the sealing member.

[0017] In these optional embodiments, the protrusion is used to define a sealing member to improve the sealing between the adapter and the box.

[0018] According to one embodiment of the present application, the protrusion is provided around the sealing member.

[0019] According to one embodiment of the present application, the box wall includes a heat exchange plate and a protective plate. The heat exchange plate is arranged on the side of the protective plate away from the distribution box and is connected to the protective plate. The heat exchange plate is thermally connected to the battery cell to regulate the temperature of the battery cell. The through hole includes a first through hole and a second through hole. The protective plate is provided with a first through hole, and the heat exchange plate is provided with a second through hole. The first through hole and the second through hole are connected.

[0020] In these optional embodiments, the heat exchange plate and the protective plate are integrated into the box body, which is not only convenient for the installation of the distribution box, but also allows heat exchange with the battery cells, reduces the number of battery components, and improves the integration of the battery.

[0021] According to one embodiment of the present application, the sealing member is an elastic member.

[0022] In these optional embodiments, the seal is an elastic member. When the high-pressure box is assembled with the box wall, the seal increases the sealing area between the seal and the box wall through elastic deformation, thereby improving the sealing effect between the seal and the box wall.

[0023] According to one embodiment of the present application, the distribution box is protruding from the top of the box body.

[0024] In these optional embodiments, such an arrangement can increase the reliability of the distribution box.

[0025] According to one embodiment of the present application, the battery further includes a connector for connecting the shell and the box wall.

[0026] In these optional embodiments, the housing and the distribution box are connected via connectors to improve the stability of the assembly of the housing and the distribution box.

[0027] According to one embodiment of the present application, a plurality of battery cells are electrically connected to form a total positive output electrode and a total negative output electrode, and the total positive output electrode and the total negative output electrode are connected to the adapter.

[0028] In a second aspect, the present application provides an electrical device comprising the aforementioned battery, wherein the battery is used to provide electrical energy.

[0029] 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

[0030] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0031] FIG1 is a schematic structural diagram of a vehicle provided in one embodiment of the present application;

[0032] FIG2 is a schematic structural diagram of a battery provided in one embodiment of the present application;

[0033] FIG3 is a schematic structural diagram of a cross-section of a battery provided in one embodiment of the present application;

[0034] FIG4 is a schematic diagram of a cross-sectional structure of a battery provided by some embodiments shown in FIG3 at position aa;

[0035] FIG5 is a schematic diagram of a partially enlarged structure of the battery shown in FIG4 according to some embodiments.

[0036] The drawings are not necessarily drawn to scale.

[0037] Description of reference numerals:

[0038] 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, battery cell; 20, housing; 21, housing wall; 211, heat exchange plate; 212, protective plate; 22, through hole; 221, first through hole; 222, second through hole; 30, distribution box; 31, housing; 311, protrusion; 32, adapter; 321, first adapter; 322, second adapter; 40, seal; 50, connector. DETAILED DESCRIPTION

[0039] 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 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.

[0040] 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 for the purpose of describing specific embodiments only 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0045] The term "plurality" used in this application refers to two or more (including two).

[0046] In this application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc., and the embodiments of this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0047] 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 for enclosing one or more battery cells. The casing can reduce the impact of liquids or other foreign matter on the charging or discharging of the battery cells.

[0048] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet comprises a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive electrode current collector. The current collector uncoated with the positive active material layer protrudes from the current collector coated with the positive active material layer. The current collectors uncoated with the positive active material layer, when stacked, serve as the positive electrode tabs. For lithium-ion batteries, for example, the positive electrode current collector can be made of aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode sheet comprises a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative electrode current collector. The current collector uncoated with the negative active material layer protrudes from the current collector coated with the negative active material layer. The current collectors uncoated with the negative active material layer, when stacked, serve as the negative electrode tabs. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon, for example. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a wound structure or a laminated structure, but the embodiments of the present application are not limited thereto.

[0049] In related technologies, the battery cells and the distribution box are located in the same space within the battery housing. Thermal failure of the battery cells releases a large amount of heat, which can easily damage the distribution box. Therefore, the distribution box needs to be isolated from the housing to reduce damage. A distribution box isolated from the housing requires a converter to connect the distribution box to the housing. However, external contaminants, such as liquids, can enter the distribution box and the housing through the converter, causing a short circuit and reducing battery reliability. The above statements are intended only to provide background information related to this application and do not necessarily constitute prior art.

[0050] In view of the above problems, the inventors, after in-depth research, proposed a battery comprising a housing, a battery cell, a distribution box, and a seal. The adapter is directly connected to the housing, and the distribution box with the adapter is connected to the housing. This not only satisfies the connection strength between the adapter and the distribution box, reduces the probability of contaminants entering the distribution box through the adapter, improves the sealing between the two, but also simplifies the assembly of the distribution box and the housing, thereby improving the assembly efficiency of the battery. The seal is arranged between the box wall and the housing and surrounds the through-hole to achieve a seal between the adapter and the housing, reducing the risk of external contaminants entering the housing through the through-hole, thereby improving the reliability of the battery.

[0051] Batteries can be used in vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and power tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles. New energy vehicles can 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.; power tools include metal cutting power tools, grinding power tools, assembly power tools and railway power 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 tab production equipment.

[0052] In some embodiments, the battery may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0053] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device according to an embodiment of the present application.

[0054] As shown in FIG1 , one embodiment of the present application provides a vehicle 1000 . Vehicle 1000 can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. A new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, among others. In one embodiment of the present application, vehicle 1000 includes a motor 300 , a controller 200 , and a battery 100 . Controller 200 controls battery 100 to power motor 300 . Motor 300 is connected to wheels via a transmission mechanism, thereby driving vehicle 1000 . Battery 100 can serve as the driving power source for vehicle 1000 , replacing or partially replacing fuel or natural gas in providing driving power for vehicle 1000 . In one example, battery 100 can be located at the bottom, front, or rear of vehicle 1000 . Battery 100 can be used to power vehicle 1000 . In one example, battery 100 can serve as the operating power source for vehicle 1000 , serving as the electrical system of vehicle 1000 . Specifically, battery 100 can be used to power vehicle 1000 during startup, navigation, and operation.

[0055] 2 and 3 , FIG. 2 is a schematic structural diagram of a battery provided in one embodiment of the present application; FIG. 3 is a schematic structural diagram of a cross section of a battery provided in one embodiment of the present application.

[0056] As shown in Figures 2 and 3, the present application provides a battery 100, which includes a housing 20, a battery cell 10, a distribution box 30, and a seal 40. The housing 20 includes a housing wall 21, which is provided with a through hole 22. The battery cell 10 is accommodated within the housing 20. The distribution box 30 includes a shell 31 and an adapter 32. The shell 31 is disposed outside the housing wall 21 and connected to the housing wall 21. The adapter 32 is connected to the shell 31, and at least a portion of the adapter 32 is accommodated in the through hole 22. The seal 40 is disposed between the housing wall 21 and the shell 31 and surrounds the through hole 22.

[0057] The box body 20 is used to accommodate the battery cells 10 . The box body 20 can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 10 to a certain extent.

[0058] For example, the housing 20 may include a first housing and a second housing. The first and second housings cover each other and together define a storage space for the battery cells 10. The first housing may be a hollow structure with one end open, and the second housing may be a plate-like structure. The second housing covers the open side of the first housing, so that the first and second housings together define a storage space. Alternatively, the first and second housings may both be hollow structures with one end open, with the open side of the first housing covering the open side of the second housing. Of course, the housing 20 formed by the first and second housings may take a variety of shapes, such as a cylinder or a rectangular parallelepiped. To improve the sealing performance of the connection between the first and second housings, a sealing member, such as a sealant or a sealing ring, may be provided between the first and second housings. If the first housing covers the top of the second housing, the first housing may be referred to as the upper housing cover, and the second housing may be referred to as the lower housing.

[0059] In the embodiment of the present application, the box body 20 includes a box wall 21, which can be one of the top wall, side wall, or bottom wall of the box body 20. The box wall 21 is provided with a through hole 22, which allows an external component of the box body 20 to extend into the through hole 22, or allows an external component of the box body 20 to extend into the box body 20 through the through hole 22.

[0060] The distribution box 30 includes a shell 31 and an adapter 32. The shell 31 can accommodate electrical components, which are electrically connected to the battery cells 10. The distribution box 30 controls the battery 100. As an example, the distribution box 30 plays a role in protecting the battery 100 and distributing power during the charging and discharging process of the battery 100. The shell 31 is arranged on the outside of the box wall 21 and is connected to the box wall 21. When the battery cell 10 has thermal runaway, the box wall 21 can protect the distribution box 30 and reduce the risk of high-temperature substances released by the battery cell 10 damaging the electrical components. Placing the distribution box 30 outside the box body 20 can also improve the utilization rate of the internal space of the battery.

[0061] Typically, the battery 100 has a relatively high voltage. Directly connecting electrical appliances (such as motor controllers, air conditioning systems, and charging systems) to the battery 100 would create a cluttered wiring harness. Therefore, the battery 100 requires a power distribution box 30 to distribute the high voltage. The power distribution box 30 utilizes a centralized power distribution solution, offering a compact design, convenient wiring layout, and quick and easy maintenance.

[0062] In some embodiments, the electrical device includes one or more of a fuse, a relay, a resistor, a current sensor, and a battery management component to facilitate control of the battery 100 .

[0063] In some embodiments, the shell 31 is connected to the box wall 21 by welding, bolt connection, hinge connection, clamping connection, adhesive connection, etc.

[0064] In the embodiment of the present application, the distribution box 30 includes a housing 31 and an adapter 32. The adapter 32 is connected to the housing 31, and at least a portion of the adapter 32 is accommodated in the through-hole 22. Because the distribution box 30 is disposed outside the housing 20, the adapter 32 is required to achieve the connection between the distribution box 30 and the housing 20. The adapter 32 at least partially protrudes from the housing 20 and is accommodated in the through-hole 22 to achieve the connection between the distribution box 30 and the housing 20.

[0065] Exemplarily, the adapter 32 and the housing 31 are an integrally formed structure.

[0066] Exemplarily, the adapter 32 and the housing 31 are separate structures.

[0067] The seal 40 is used to seal the box wall 21 and the housing 31. The seal 40 is disposed between the box wall 21 and the housing 31 and surrounds the through-hole 22. When the high-voltage box is assembled with the box wall 21, the seal 40 contacts and abuts against the box wall 21, thereby forming a sealed connection between the housing 31 of the high-voltage box and the box wall 21. This reduces the risk of external contaminants entering the box body 20 through the through-hole 22.

[0068] Specifically, the sealing member 40 is provided with a first surface and a second surface opposite to each other along the arrangement direction of the high-voltage box and the box body 20 . The first surface abuts against the shell 31 , and the second surface abuts against the box wall 21 .

[0069] In the embodiment of the present application, the sealing member 40 may be a sealing ring, a sealant, a sealing block with a hollow structure, or a sealing plate.

[0070] The battery 100 provided in the present application includes a housing 20, a battery cell 10, a distribution box 30, and a seal 40. The housing 31 is arranged on the outside of the box wall 21 and is connected to the box wall 21, that is, the distribution box 30 is arranged on the outside of the housing 20. The distribution box 30 and the housing 20 are independently arranged. The high-temperature gas leaked by the thermal failure of the battery cell 10 will not directly enter the distribution box 30, thereby reducing the thermal damage to the distribution box 30. The adapter 32 is directly connected to the housing 31, and the distribution box 30 with the adapter 32 is connected to the housing 20. This not only satisfies the connection strength between the adapter 32 and the distribution box 30, but also reduces the probability of pollutants entering the distribution box 30 through the adapter 32, improves the sealing of the two, and simplifies the assembly degree of the distribution box 30 and the housing 20, thereby improving the assembly efficiency of the battery 100. The seal 40 is arranged between the box wall 21 and the shell 31 and surrounds the through hole 22 to achieve sealing between the adapter 32 and the box body 20, reducing the risk of external contaminants entering the box body 20 through the through hole 22, thereby improving the reliability of the battery 100.

[0071] According to one embodiment of the present application, the housing 31 and the adapter 32 are integrally connected.

[0072] Specifically, the distribution box 30 includes an integrally formed housing 31 and an adapter 32. The present embodiment does not limit the molding method of the housing 31 and the adapter 32. Optionally, the housing 31 and the adapter 32 are integrally stamped. Alternatively, the housing 31 and the adapter 32 are vacuum die-cast.

[0073] In these optional embodiments, the shell 31 and the adapter seat 32 are integrally arranged, so that the shell 31 and the adapter seat 32 have a higher connection strength, and the shell 31 and the adapter seat 32 have a higher sealing performance. The two are not easy to fall off when subjected to external force, and the reliability of the battery 100 is improved.

[0074] 4 and 5 , FIG4 is a schematic diagram of a cross-sectional structure of a battery provided by some embodiments shown in FIG3 at point aa; FIG5 is a schematic diagram of a partially enlarged structure of a battery provided by some embodiments shown in FIG4 .

[0075] As shown in Figures 3 to 5, according to one embodiment of the present application, the adapter seat 32 includes a first adapter portion 321 and a second adapter portion 322, the first adapter portion 321 is connected to the shell 31 and extends into the shell 31, and the second adapter portion 322 is connected to the first adapter portion 321 and extends into the through hole 22.

[0076] In the embodiment of the present application, the adapter 32 includes a first adapter portion 321 and a second adapter portion 322. The first adapter portion 321 is connected to the housing 31 and extends into the housing 31 to connect with the electrical components contained in the housing 31. The second adapter portion 322 is connected to the first adapter portion 321 and extends toward the through hole 22. It extends into the through hole 22 to connect with other components in the box 20, such as serving as the total positive output terminal and the total negative output terminal of multiple battery cells 10.

[0077] In these optional embodiments, the adapter seat 32 includes a first adapter portion 321 and a second adapter portion 322. The first adapter portion 321 extends into the shell 31 to connect with the electrical components in the shell 31, and the second adapter portion 322 extends into the through hole 22 to connect with the components in the box body 20, so as to facilitate the connection between the distribution box 30 and the box body 20.

[0078] According to one embodiment of the present application, the orthographic projection of the shell 31 on the box wall 21 covers the orthographic projection of the sealing member 40 on the box wall 21 .

[0079] Specifically, the shell 31 includes a bottom wall, which is connected to the box wall 21, and the adapter 32 is connected to the bottom wall. The wall portion has a rectangular structure with a predetermined length and width. The seal 40 is a sealing ring. The orthographic projection area of ​​the bottom wall on the box wall 21 is larger than the orthographic projection area of ​​the sealing ring on the box wall 21, and the orthographic projection of the bottom wall on the box wall 21 covers the orthographic projection of the sealing ring on the box wall 21.

[0080] Exemplarily, the sealing member 40 is a sealing ring, which is disposed between the box wall 21 and the housing 31 and surrounds the through hole 22 , and is sleeved on the adapter 32 .

[0081] Exemplarily, the seal 40 includes two sealing rings, the distribution box 30 includes a shell 31 and two adapters 32, the shell 31 is provided with two through holes 22, the sealing ring is arranged between the box wall 21 and the shell 31 and surrounds the corresponding through holes 22, and each sealing ring is sleeved on the corresponding adapter 32.

[0082] Exemplarily, the sealing member 40 is a sealing ring, which is disposed between the box wall 21 and the shell 31 and surrounds the through hole 22 , and is disposed along the edge of the bottom wall.

[0083] In these optional embodiments, the configuration is such that the sealing member 40 has an appropriate size, which not only achieves sealing between the adapter 32 and the box body 20 , but also reduces the manufacturing cost of the sealing member 40 .

[0084] As shown in FIG. 4 and FIG. 5 , according to one embodiment of the present application, a surface of the shell 31 facing the box wall 21 is provided with a protrusion 311 , and the protrusion 311 is used to limit the sealing member 40 .

[0085] In an embodiment of the present application, the shell 31 includes a shell body and a protrusion 311 connected to the surface of the shell body and protruding toward the box wall 21. The protrusion 311 is used to limit the seal 40 to reduce the movement of the seal 40 during the assembly process of the distribution box 30 and the box body 20, and during the transportation or use of the battery 100, thereby affecting the sealing of the adapter 32 and the box body 20.

[0086] Specifically, a plurality of protrusions 311 are provided on the surface of the housing 31 facing the box wall 21 , and the plurality of protrusions 311 are arranged at intervals along the circumference of the sealing member 40 .

[0087] In these optional embodiments, the protrusion 311 is used to define the sealing member 40 to improve the sealing between the adapter 32 and the box body 20.

[0088] According to one embodiment of the present application, the protrusion 311 is disposed around the sealing member 40 .

[0089] In the embodiment of the present application, the protrusion 311 is arranged around the seal 40 to form an annular protrusion 311 that cooperates with the seal 40 , and the seal 40 is attached to the inner surface of the protrusion 311 facing the seal 40 .

[0090] Optionally, the protrusion 311 is arranged around the sealing member 40 .

[0091] As shown in Figures 4 and 5, according to one embodiment of the present application, the box wall 21 includes a heat exchange plate 211 and a protective plate 212. The heat exchange plate 211 is arranged on the side of the protective plate 212 away from the distribution box 30 and is connected to the protective plate 212. The heat exchange plate 211 is thermally connected to the battery cell 10 to regulate the temperature of the battery cell 10. The through hole 22 includes a first through hole 221 and a second through hole 222. The protective plate 212 is provided with a first through hole 221, and the heat exchange plate 211 is provided with a second through hole 222. The first through hole 221 and the second through hole 222 are connected.

[0092] In the embodiment of the present application, the box wall 21 includes a protective plate 212, which is disposed on the side of the heat exchange plate 211 facing away from the battery cell 10 and is connected to the heat exchange plate 211. The protective plate 212 may cover a portion of the heat exchange plate 211 or may completely cover the protective plate 212. The protective plate 212 may be used to connect to the power distribution box 30.

[0093] In some embodiments, the protection plate 212 may be connected to the heat exchange plate 211 by bonding, fastener connection, welding, clamping or other methods.

[0094] In some embodiments, the protection plate 212 may be a plate of uniform thickness or a plate of unequal thickness.

[0095] In some embodiments, the protective plate 212 may be made of metal, plastic, metal-plastic composite material, or other materials. Alternatively, the metal may be aluminum, aluminum alloy, stainless steel, nickel-plated steel, or other materials.

[0096] In the embodiment of the present application, the box wall 21 includes a heat exchange plate 211, which is arranged on the side of the protective plate 212 facing away from the distribution box 30 and is connected to the protective plate 212. The heat exchange plate 211 is provided with a flow channel for the flow of a heat exchange medium, or the protective plate 212 is provided with a heat exchange pipeline for guiding the flow of the heat exchange medium. The battery cells 10 are connected to the heat exchange plate 211 to regulate the temperature of the battery cells 10. The heat exchange medium flowing in the heat exchange plate 211 can quickly remove the heat generated by the battery cells 10 to achieve the purpose of temperature regulation.

[0097] In some embodiments, the heat exchange plate 211 may be made of aluminum or an aluminum alloy. Aluminum or an aluminum alloy has good heat conduction properties. Furthermore, aluminum or an aluminum alloy is lightweight, which can reduce the overall weight of the housing 20 and increase the energy density of the battery 100.

[0098] In some embodiments, the heat exchange medium is a fluid medium, such as water, ethanol, oil, and Freon. The heat exchange medium can absorb the heat inside the box 20, or the flowing heat exchange medium can take the heat inside the battery box 20 to the external environment to achieve the purpose of regulating the temperature.

[0099] In these optional embodiments, the heat exchange plate 211 and the protective plate 212 are integrated on the box body 20, which is not only conducive to the installation of the distribution box 30 and allows heat exchange with the battery cell 10, but also reduces the number of battery components and improves the integration of the battery 100.

[0100] According to one embodiment of the present application, the sealing member 40 is an elastic member.

[0101] In the embodiment of the present application, the seal 40 is an elastic member. Alternatively, the seal 40 may be a sealing ring, and its material may be, but is not limited to, rubber. The seal 40 has a certain elasticity and can be elastically deformed under stress. During the assembly of the high-voltage box and the box wall 21, the seal 40 is squeezed and deformed under stress, thereby increasing the contact area between the seal 40 and the box wall 21.

[0102] In these optional embodiments, the seal 40 is an elastic member. When the high-pressure box is assembled with the box wall 21, the sealing area between the seal 40 and the box wall 21 is increased through the elastic deformation of the seal 40, thereby improving the sealing effect between the seal 40 and the box wall 21.

[0103] According to one embodiment of the present application, the distribution box 30 is protruding from the top of the box body 20 .

[0104] In the embodiment of the present application, the power distribution box 30 is protruding from the top of the main body. When the housing 20 of the battery 100 serves as the chassis of the vehicle, the power distribution box 30 is located on top of the housing 20 so that it is not exposed to the outside of the vehicle and is protected from external impact, thereby increasing the reliability of the power distribution box 30.

[0105] As shown in FIG. 2 and FIG. 4 , according to one embodiment of the present application, the battery 100 further includes a connector 50 , which is used to connect the housing 31 and the box wall 21 .

[0106] Specifically, the edge of the housing 31 is provided with a mounting hole, and the connector 50 is fixed to the box wall 21. The connector 50 can be inserted through the mounting hole to connect the housing 31 and the box wall 21, thereby connecting the box body 20 and the distribution box 30. Optionally, the connector 50 is a stud welded to the surface of the box wall 21 facing the distribution box 30. In this arrangement, the box body 20 and the distribution box 30 are connected via the connector 50 without significantly changing the structure of the box body 20 and the distribution box 30.

[0107] In these optional embodiments, the housing 20 and the distribution box 30 are connected via a connector 50 to improve the assembly stability of the housing 20 and the distribution box 30 .

[0108] According to one embodiment of the present application, a plurality of battery cells 10 are electrically connected to form a total positive output electrode and a total negative output electrode, and the total positive output electrode and the total negative output electrode are connected to the adapter 32 .

[0109] The present application provides an electrical device, including the battery 100 described above, and the battery 100 is used to provide electrical energy.

[0110] According to some embodiments of the present application, as shown in Figures 2 to 5, the battery 100 includes a housing 20, a battery cell 10, a distribution box 30, a seal 40, a connector 50, a total positive output electrode, and a total negative output electrode. The housing 20 includes a housing wall 21, which includes a heat exchange plate 211 and a protective plate 212. The heat exchange plate 211 is disposed on a side of the protective plate 212 facing away from the distribution box 30 and is connected to the protective plate 212. The battery cell 10 is thermally connected to the heat exchange plate 211. The housing wall 21 is provided with a through hole 22, which includes a first through hole 221 and a second through hole 222. The protective plate 212 is provided with a first through hole 221, and the heat exchange plate 211 is provided with a second through hole 222. The first through hole 221 and the second through hole 222 are connected. The battery cell 10 is accommodated in the housing 20. The distribution box 30 includes a housing 31 and an adapter 32. The housing 31 is located on the top of the outer side of the box wall 21 and is connected to the box wall 21. The adapter 32 is integrally connected to the housing 31. The orthographic projection of the housing 31 on the box wall 21 covers the orthographic projection of the seal 40 on the box wall 21. The surface of the housing 31 facing the box wall 21 is provided with a protrusion 311, which surrounds the seal 40 and serves to limit the seal 40. The adapter 32 includes a first adapter portion 321 and a second adapter portion 322. The first adapter portion 321 is connected to the housing 31 and extends into the housing 31. The second adapter portion 322 is connected to the first adapter portion 321 and extends into the through-hole 22. The seal 40 is located between the box wall 21 and the housing 31 and surrounds the through-hole 22. The seal 40 is an elastic sealing ring. The connector 50 connects the housing 31 to the box wall 21. The total positive output pole and the total negative output pole are disposed in the box body 20 , and the total positive output pole and the total negative output pole are connected to the adapter 32 .

[0111] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be replaced 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 includes all technical solutions within the scope of the claims.

Claims

1. A battery comprising: The box body comprises a box wall, wherein the box wall is provided with a through hole; A battery cell is housed in the box; The distribution box comprises a shell and an adapter, wherein the shell is arranged on the outside of the box wall and connected to the box wall, the adapter is connected to the shell, and at least a portion of the adapter is accommodated in the through hole; A sealing member is arranged between the box wall and the shell and surrounds the through hole.

2. The battery according to claim 1, wherein The shell and the adapter are integrally connected.

3. The battery according to claim 1, wherein The adapter seat includes a first adapter portion and a second adapter portion, the first adapter portion is connected to the shell and extends into the shell, and the second adapter portion is connected to the first adapter portion and extends into the through hole.

4. The battery according to claim 1, wherein The orthographic projection of the shell on the box wall covers the orthographic projection of the seal on the box wall.

5. The battery according to claim 1, wherein A protrusion is provided on the surface of the shell facing the box wall, and the protrusion is used to limit the sealing component.

6. The battery according to claim 5, wherein The protrusion is arranged around the sealing member.

7. The battery according to claim 1, wherein The box wall includes a heat exchange plate and a protective plate. The heat exchange plate is arranged on the side of the protective plate away from the distribution box and is connected to the protective plate. The heat exchange plate is thermally connected to the battery cell. to adjust the temperature of the battery cell; The through hole includes a first through hole and a second through hole. The protective plate is provided with the first through hole, the heat exchange plate is provided with the second through hole, and the first through hole and the second through hole are in communication.

8. The battery according to claim 1, wherein The sealing element is an elastic element.

9. The battery according to claim 1, wherein The distribution box is protrudingly arranged on the top of the box body.

10. The battery according to claim 1, wherein The battery further includes a connector, which is used to connect the shell and the box wall.

11. The battery according to claim 1, wherein The plurality of battery cells are electrically connected to form a total positive output electrode and a total negative output electrode, and the total positive output electrode and the total negative output electrode are connected to the adapter.

12. An electrical device comprising the battery according to any one of claims 1 to 11, wherein the battery is used to provide electrical energy.

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