Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a battery box body, a battery monomer, a switching assembly and a connecting piece, the battery box body comprises a first box body and a second box body which are oppositely arranged in the first direction, and the first box body and the second box body define a containing cavity. The battery monomers are arranged in the accommodating cavity; the switching assembly is arranged on the battery box body, the switching assembly comprises a first switching part and a second switching part, the first switching part is connected with the first box body, and the second switching part is connected with the second box body. One of the connecting piece and the switching assembly is inserted into the other one so as to connect and fix the first switching part and the second switching part, and the first switching part and the second switching part abut against the connecting piece in the first direction. According to the embodiment of the invention, the cost of the battery device is reduced.

Description

Technical Field

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

[0002] With the development of new energy technologies, battery devices are being used more and more widely, for example, in mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools.

[0003] In the development of battery technology, how to reduce the cost of battery devices is an important research direction in the battery field. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device to help reduce costs.

[0005] In a first aspect, the present application provides a battery device, comprising: a battery case, comprising a first case and a second case arranged opposite to each other along a first direction, the first case and the second case enclosing a accommodating cavity; a battery cell, arranged in the accommodating cavity; an adapter assembly, arranged in the battery case, the adapter assembly comprising a first adapter part and a second adapter part, the first adapter part being connected to the first case, and the second adapter part being connected to the second case; a connector, one of the connector and the adapter assembly being plugged into the other to connect and fix the first adapter part and the second adapter part, the first adapter part and the second adapter part both abutting against the connector along the first direction.

[0006] In some embodiments of the first aspect, the battery device includes a battery case, a battery cell, an adapter assembly and a connector. The first case and the second case can be enclosed to form a accommodating cavity to accommodate and protect the battery cell. The adapter assembly includes a first adapter portion connected to the first case, and a second adapter portion connected to the second case. By providing a connector and an adapter assembly that can be plugged in to replace bolts, the first adapter portion and the second adapter portion are connected and fixed, thereby connecting and fixing the first case and the second case, which helps to reduce the cost of the battery device.

[0007] In some embodiments, the connector and the adapter assembly are detachably connected to each other, which is convenient for maintenance and helps reduce costs.

[0008] In some embodiments, the connecting member is in a strip-shaped structure, and the extending direction of the connecting member intersects with the first direction. This arrangement facilitates the assembly of the connecting member and the adapter assembly, and also helps to improve the connection strength between the two along the first direction.

[0009] In some embodiments, the first adapter portion and the second adapter portion are both extended along the extension direction of the connector. This arrangement can better enable the connector and the adapter assembly to be plugged in and matched, and also helps to better improve the connection strength of the two along the first direction.

[0010] In some embodiments, the first adapter includes first sub-adapters spaced apart along the extension direction, and the second adapter includes second sub-adapters spaced apart along the extension direction. Such a design can reduce the material used for the first adapter and the second adapter, thereby reducing the cost of the electrical device and also reducing the weight of the electrical device.

[0011] In some embodiments, the first sub-adapting portion and the second sub-adapting portion are arranged alternately along the first direction. By arranging in this way, it is possible to ensure that the force of the adapting assembly and the connecting member after being plugged and matched can be uniform.

[0012] In some embodiments, the first sub-transition part and the second sub-transition part are alternately arranged along the extension direction. By arranging in this way, it is possible to reduce the cost while improving the uniformity of the contact between the connector and the first sub-transition part and the second sub-transition part, so as to reduce the stress concentration of the connector and help to increase the service life of the electrical device.

[0013] In some embodiments, the connecting member is clamped on the first adapter portion and the second adapter portion along the first direction. Such a design enables the connecting component to be plugged into the connecting member to ensure that the connection between the first box and the second box is fixed.

[0014] In some embodiments, the connector has a clamping cavity and an opening connected to the clamping cavity, the opening is arranged toward the battery case, the first adapter portion and the second adapter portion both extend into the opening and are arranged in the clamping cavity, and in the direction from the connector to the battery case, the cross-sectional dimension of the side of the connector facing the opening is smaller than the cross-sectional dimension of the side facing away from the opening. This arrangement is helpful to improve the stability of the adapter assembly plugged into the clamping cavity of the connector.

[0015] In some embodiments, the connecting member is inserted between the first adapter portion and the second adapter portion. The connecting member can be inserted into the adapter assembly to ensure that the first box body and the second box body are connected and fixed.

[0016] In some embodiments, the connector is in a columnar structure, which makes it easier for the connector to be plugged into the adapter assembly and facilitates assembly.

[0017] In some embodiments, in the direction from the connector to the battery box, the orthographic projection of the first adapter overlaps with the orthographic projection of the first box, and the orthographic projection of the second adapter overlaps with the orthographic projection of the second box. By setting in this way, the adapter assembly designed in this way can be plugged between the connectors.

[0018] In some embodiments, in the direction from the connector to the battery box, the orthographic projection of the first adapter overlaps with the orthographic projection of the second box, and the orthographic projection of the second adapter overlaps with the orthographic projection of the first box. By setting in this way, the adapter assembly designed in this way can be plugged between the connectors, and the connector can also be plugged between the adapter assemblies designed in this way, which is conducive to improving the flexibility of use.

[0019] In some embodiments, the first adapter portion includes a first bent plate, the second adapter portion includes a second bent plate, and the first bent plate and the second bent plate are bent along a first direction toward a direction away from each other. This arrangement is conducive to improving the connection strength between the adapter assembly and the connector.

[0020] In some embodiments, the first adapter portion includes a first curved plate, the second adapter portion includes a second curved plate, and the first curved plate and the second curved plate are arranged to protrude in a first direction away from each other. This arrangement is conducive to improving the connection strength between the adapter assembly and the connector.

[0021] In some embodiments, the first curved plate is protruded toward the second box along the first direction, and the second curved plate is protruded toward the first box along the first direction. Such a design enables the connector to be inserted between the first curved plate and the second curved plate to ensure that the first box and the second box are connected and fixed.

[0022] In some embodiments, the first adapter is connected to the side of the first box body facing away from the accommodating cavity, and the second adapter is connected to the side of the second box body facing away from the accommodating cavity. The adapter assembly does not occupy the space of the accommodating cavity, and the accommodating cavity can accommodate more battery cells to prevent affecting the energy density of the battery device.

[0023] In some embodiments, the first box body has a first flange protruding on one side facing away from the accommodating cavity, the first adapter is connected to the side of the first flange facing away from the accommodating cavity, the second box body has a second flange protruding on one side facing away from the accommodating cavity, and the second adapter is connected to the side of the second flange facing away from the accommodating cavity. The first flange can buffer the force transmitted by the first adapter, and the second flange can buffer the force transmitted by the second adapter, so as to increase the service life of the battery box body and help increase the service life of the battery device.

[0024] In some embodiments, the first adapter is disposed on a side of the first box body facing the second box body along the first direction, and / or the second adapter is disposed on a side of the second box body facing the first box body along the first direction. By arranging in this way, the cost of the battery device can be reduced and the space utilization rate of the battery device can be improved.

[0025] In some embodiments, the first adapter is arranged around the first box, and the second adapter is arranged around the second box. Such a design allows the connector to be arranged around the battery box, which is beneficial to improving the connection strength between the first box and the second box, preventing them from being displaced or even separated during transportation, and improving the protection effect of the battery monomer, thereby improving the reliability of the battery device.

[0026] In some embodiments, the first box and the first adapter are an integrated structure, and / or the second box and the second adapter are an integrated structure. This arrangement is conducive to improving manufacturing efficiency and the connection strength between the two, thereby improving the reliability of the battery device.

[0027] In some embodiments, the battery device further comprises a sealing gasket, which is clamped between the first box body and the second box body. The sealing gasket is provided to improve the sealing performance of the battery box body, so as to better protect the battery cells, thereby improving the reliability of the battery device.

[0028] In a second aspect, the present application provides an electrical device, including a battery device provided according to any embodiment of the first aspect, and the battery device is used to store or 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] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0032] Figure 2 A schematic diagram of an exploded structure of a battery device provided in some embodiments of the present application;

[0033] Figure 3 A schematic diagram of the structure of a battery cell assembly provided in some embodiments of the present application;

[0034] Figure 4 A schematic diagram of a three-dimensional structure of a battery cell provided in some embodiments of the present application;

[0035] Figure 5 A schematic diagram of the structure of a battery box provided in some embodiments of the present application;

[0036] Figure 6 yes Figure 5 The enlarged schematic diagram at P in the middle;

[0037] Figure 7 A schematic diagram of the structure of a battery box provided in some other embodiments of the present application;

[0038] Figure 8 yes Figure 7 Enlarged schematic diagram of the middle Q.

[0039] in:

[0040] 1- vehicle; 100- battery device; 200- controller; 300- motor; 100a- battery cell assembly;

[0041] 10-battery box; 11-first box; 111-first flange; 12-second box; 121-second flange; 101-accommodation cavity;

[0042] 20-battery cell; 21-housing; 211-end cover; 212-housing; 22-electrode assembly; 23-electrode terminal; 24-explosion-proof valve;

[0043] 30-adapter assembly; 31-first adaptor; 311-first sub-adapter; 32-second adaptor; 321-second sub-adapter;

[0044] 40-connecting piece; 401-clamping cavity; 402-opening;

[0045] X-first direction; Y-second direction; Z-third direction;

[0046] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0047] The following embodiments of the technical solution of the present application are 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices 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 battery devices, the market demand is also constantly expanding.

[0054] The development of battery technology must consider multiple design factors at the same time, such as battery life, energy density, discharge capacity, charge and discharge rate and other performance parameters. In addition, how to reduce the cost of battery devices is also an important research direction in the battery field.

[0055] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0056] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0057] In the battery device in the related art, the upper and lower boxes of the battery case are usually fixed and connected by bolts. In order to ensure the sealing of the battery case, a large number of bolts need to be set. For example, a bolt is fixed on the battery case every 50 mm, which makes the cost of the battery device high. In addition, the bolt holes of the upper and lower boxes need to be aligned, otherwise the bolts cannot be tightened and may also cause poor sealing problems. Therefore, the processing accuracy requirements for the upper and lower boxes are also increased, which makes the processing cost of the battery device high.

[0058] Based on the above technical problems, an embodiment of the present application provides a battery device, including a battery case, a battery cell, an adapter assembly and a connector. The battery case includes a first case and a second case that are relatively arranged along a first direction, and the first case and the second case are enclosed to form a accommodating cavity. The battery cell is arranged in the accommodating cavity. The adapter assembly is arranged in the battery case, and the adapter assembly includes a first adapter part and a second adapter part, the first adapter part is connected to the first case, and the second adapter part is connected to the second case. One of the connector and the adapter assembly is plugged into the other to connect and fix the first adapter part and the second adapter part, and the first adapter part and the second adapter part are both abutted against the connector along the first direction.

[0059] By changing the fixed connection method of the first box body and the second box body, that is, providing an adapter assembly and a connecting piece to replace the bolts, specifically, the first box body is connected with a first adapter part, the second box body is connected with a second adapter part, and one of the connecting piece and the adapter assembly is plugged into the other to connect and fix the first adapter part and the second adapter part, thereby realizing a fixed connection between the first box body and the second box body, which is beneficial to reducing the cost of this battery device.

[0060] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0061] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the devices described above, but can also be applied to all devices using battery cells. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0062] For example, Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a vehicle 1 according to an embodiment of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 300, a controller 200 and a battery device 100 may be provided inside the vehicle 1. The controller 200 is used to control the battery device 100 to power the motor 300. For example, a battery device 100 may be provided at the bottom, front or rear of the vehicle 1. The battery device 100 may be used to power the vehicle 1. For example, the battery device 100 may be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery device 100 may not only be used as an operating power source for the vehicle 1, but also 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.

[0063] See also Figure 2 and Figure 3 The battery device 100 (Battery Apparatus) mentioned in the embodiment of the present application may include one or more battery cell assemblies 100a for providing voltage and capacity. The battery cell assembly 100a (Battery Cell Assembly) may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel or in mixed connection through a busbar component.

[0064] In some embodiments, a battery cell assembly 100 a (Battery Cell Assembly) is generally formed by arranging a plurality of battery cells 20 .

[0065] As an example, the battery cell assembly 100a may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0066] like Figure 2 and Figure 3 As shown, in some embodiments, the battery device 100 may be a battery pack, which includes a battery case 10 and one or more battery cell assemblies 100 a , wherein the battery cell assemblies 100 a are accommodated in the battery case 10 .

[0067] As an example, the battery cell assembly 100 a may be a battery module, and the battery cell assembly 100 a may be accommodated in the battery case 10 by fixing the battery module in the battery case 10 .

[0068] As an example, the battery cell assembly 100 a may also be accommodated in the battery case 10 by directly fixing the plurality of battery cells 20 to the battery case 10 .

[0069] See also Figure 4 The battery cell 20 includes a housing 21 , an electrode assembly 22 , an electrode terminal 23 and an explosion-proof valve 24 .

[0070] The housing 21 is a component used to form an internal environment of the battery cell 20. The internal environment formed by the housing 21 can be used to accommodate the electrode assembly 22, and can also be used to accommodate electrolyte and other components. Optionally, the housing 21 can be made of, but not limited to, metal or non-metal materials. For example, the metal material can be copper, aluminum or stainless steel, etc.; the non-metal material can be polyethylene, polypropylene or polyvinyl chloride, etc.

[0071] For example, the housing 21 may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0072] In some embodiments, the housing 21 may be a sealed structure or a non-sealed structure. As an example, when the housing 21 is a non-sealed structure, the housing 21 plays a role in protecting the electrode assembly 22, and a sealed bag is also included between the housing 21 and the electrode assembly 22, and the sealed bag is used to encapsulate the electrode assembly 22 and the electrolyte. Specifically, the sealed bag can be a bag-shaped insulating member or an aluminum-plastic film. When the housing 21 is a sealed structure, it is used to encapsulate the electrode assembly 22, the electrolyte and other components.

[0073] In some embodiments, the housing includes an end cap 211 and a shell 212, wherein the shell 212 is provided with an opening, and the end cap 211 is provided to cover the opening. The shell 212 may be provided with one or more openings. One or more end caps 211 may also be provided.

[0074] The shape of the shell 21 can be determined according to the specific shape of the electrode assembly 22. For example, if the electrode assembly 22 is a rectangular parallelepiped structure, a rectangular shell can be selected; if the electrode assembly 22 is a cylindrical structure, a cylindrical shell can be selected.

[0075] The electrode assembly 22 is a component in the battery cell 20 where electrochemical reactions occur. The housing 21 may contain one or more electrode assemblies 22 .

[0076] In some embodiments, the shape of the electrode assembly 22 can be cylindrical, flat, or polygonal.

[0077] The electrode assembly 22 may be a wound structure, a laminated structure, or a mixed structure of a wound structure and a laminated structure.

[0078] The electrode assembly 22 includes a positive electrode, a negative electrode, and a separator, and the separator is disposed between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell 20, active ions (such as lithium ions) are embedded and released back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0079] In some embodiments, at least one electrode terminal 23 is disposed on the housing 21, and the electrode terminal 23 is electrically connected to the tab of the electrode assembly 22. The electrode terminal 23 may be directly connected to the tab, or may be indirectly connected to the tab through a current collecting member.

[0080] The electrode terminal 23 can be used to electrically connect to the electrode assembly 22 to output or input the electrical energy of the battery cell 20. The electrode terminal 23 can be electrically connected to the electrode assembly 22 by connecting to the tab. The tab electrically connected to the electrode terminal 23 can be a positive tab or a negative tab.

[0081] The end cover 211 is provided with an explosion-proof valve 24 for breaking to release the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0082] In the present application, the battery cell 20 may include a lithium-ion battery cell, a sodium-ion battery cell, a magnesium-ion battery cell, etc., which is not limited in the embodiments of the present application.

[0083] As an example, the battery cell 20 can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in the present application.

[0084] Please also read Figures 3 to 8According to an embodiment of the present application, a battery device 100 is provided, including a battery case 10, a battery cell 20, an adapter assembly 30 and a connector 40. The battery case 10 includes a first case 11 and a second case 12 that are arranged opposite to each other along a first direction X, and the first case 11 and the second case 12 enclose a receiving chamber 101. The battery cell 20 is arranged in the receiving chamber 101. The adapter assembly 30 is arranged in the battery case 10, and the adapter assembly 30 includes a first adapter portion 31 and a second adapter portion 32, the first adapter portion 31 is connected to the first case 11, and the second adapter portion 32 is connected to the second case 12. One of the connector 40 and the adapter assembly 30 is plugged into the other to connect and fix the first adapter portion 31 and the second adapter portion 32, and the first adapter portion 31 and the second adapter portion 32 are both abutted against the connector 40 along the first direction X.

[0085] The battery case 10 is used to accommodate and protect the battery cells 20 . The battery case 10 includes a first case 11 and a second case 12 . The first case 11 and the second case 12 are used to enclose and form a receiving cavity 101 for accommodating the battery cells 20 .

[0086] The first box body 11 and the second box body 12 are arranged relative to each other along the first direction X, which can be understood as follows: the first box body 11 can be set as a cylinder having a first opening along the first direction X, and the second box body 12 can be set as a cylinder having a second opening along the first direction X, the first opening and the second opening are arranged toward each other, and the first box body 11 and the second box body 12 are connected along the first direction X to buckle the first opening and the second opening, so that the first box body 11 and the second box body 12 can be enclosed to form a closed accommodating cavity 101; of course, the first box body 11 can also be set as a plate body, and the second box body 12 is a cylinder having a third opening along the first direction X, and the first box body 11 and the second box body 12 are connected along the first direction X to buckle the third opening, so that the first box body 11 and the second box body 12 can be enclosed to form a closed accommodating cavity 101.

[0087] The battery box 10 is provided with an adapter assembly 30, specifically, the first box 11 is connected to the first adapter part 31, and the second box 12 is connected to the second adapter part 32. One of the adapter assembly 30 and the connector 40 can be plugged into the other to connect and fix the first adapter part 31 and the second adapter part 32, thereby connecting and fixing the first box 11 and the second box 12 to improve the protection of the battery cell.

[0088] Among them, after the adapter assembly 30 and the connector 40 are plugged in and connected, the first adapter part 31 and the second adapter part 32 are both in contact with the connector 40 along the first direction X, so that the adapter assembly 30 and the connector 40 are more tightly connected along the first direction X, thereby making the first box body 11 and the second box body 12 more tightly connected, which is beneficial to ensuring the sealing requirements of the battery box body 10, thereby helping to improve the reliability of the battery device 100.

[0089] Some embodiments of the present application provide a battery device 100, which includes a battery case 10, a battery cell 20, an adapter assembly 30 and a connector 40. The first case 11 and the second case 12 can enclose a accommodating cavity 101 to accommodate and protect the battery cell 20. The adapter assembly 30 includes a first adapter portion 31 connected to the first case 11 and a second adapter portion 32 connected to the second case 12. By providing a connector 40 and the adapter assembly 30 that can be plugged in to replace bolts, the first adapter portion 31 and the second adapter portion 32 are connected and fixed, thereby connecting and fixing the first case 11 and the second case 12, which helps to reduce the cost of the battery device 100.

[0090] Furthermore, since the first box body 11 and the second box body 12 in the embodiment of the present application do not need to be connected by bolts, there is no need to drill holes in the first box body 11 and the second box body 12, and there is no need to ensure that the holes on the first box body 11 and the second box body 12 are aligned, which helps to reduce the processing difficulty and thus helps to reduce the processing cost. In addition, it can also avoid problems such as the inability to tighten the bolts and poor airtightness due to the misalignment of the holes in the first box body 11 and the second box body 12.

[0091] Furthermore, the first box body 11 and the second box body 12 in the embodiment of the present application can be fixedly connected by plugging and fitting the connecting piece 40 with the adapter assembly 30, which is easy to operate, helps to improve assembly efficiency, and helps to reduce the difficulty of operation.

[0092] In some embodiments, the adapter assembly 30 can be completely disposed outside the battery box 10, that is, the first adapter portion 31 is connected to the side of the first box 11 facing away from the accommodating cavity 101, and the second adapter portion 32 is connected to the side of the second box 12 facing away from the accommodating cavity 101.

[0093] In other embodiments, a portion of the adapter assembly 30 may be disposed outside the battery case 10, and another portion may be disposed inside the battery case 10, that is, a portion of the first adapter portion 31 is connected to a side of the first case 11 facing away from the accommodating cavity 101, and another portion is connected to a side of the first case 11 facing the accommodating cavity 101, and a portion of the second adapter portion 32 is connected to a side of the second case 12 facing away from the accommodating cavity 101, and another portion is connected to a side of the second case 12 facing the accommodating cavity 101.

[0094] Optionally, the first box body 11 and the first adapter part 31 may be an integrated structure. Of course, the first box body 11 and the first adapter part 31 may also be provided separately, which is beneficial to reduce the difficulty of processing and improve the flexibility of use.

[0095] Optionally, the second box body 12 and the second adapter part 32 may be an integrated structure. Of course, the second box body 12 and the second adapter part 32 may also be provided separately, which is beneficial to reduce the difficulty of processing and improve the flexibility of use.

[0096] One of the connector 40 and the adapter assembly 30 is plugged into the other, wherein the connector 40 and the adapter assembly 30 can be configured as a detachable plug-in connection structure, or the connector 40 and the adapter assembly 30 can be configured as a non-detachable plug-in connection structure.

[0097] Optionally, the connector 40 may be extended in a direction inclined to the first direction X, and it is only necessary to ensure that after being plugged into the adapter assembly 30 , both the first adapter portion 31 and the second adapter portion 32 can abut against the connector 40 in the first direction X.

[0098] like Figure 5 and Figure 6 As shown, in some embodiments, the adapter assembly 30 is plugged into the connector 40. Specifically, the first adapter portion 31 and the second adapter portion 32 can be plugged into the adapter assembly 30 to connect and fix the first adapter portion 31 and the second adapter portion 32, and the first adapter portion 31 and the second adapter portion 32 are both abutted against the connector 40 along the first direction X.

[0099] like Figure 7 and Figure 8 As shown, in other embodiments, the connector 40 is plugged into the adapter assembly 30. Specifically, the connector 40 can be plugged between the first adapter portion 31 and the second adapter portion 32 to connect and fix the first adapter portion 31 and the second adapter portion 32, and the first adapter portion 31 and the second adapter portion 32 are both in contact with the connector 40 along the first direction X.

[0100] In some optional embodiments, the connector 40 and the adapter assembly 30 are detachably connected to each other.

[0101] It can be understood that one of the connector 40 and the adapter assembly 30 can be plugged into the other in a certain direction to connect and fix the first adapter portion 31 and the second adapter portion 32, and one of the connector 40 and the adapter assembly 30 can be pulled out in the opposite direction to remove it from the other.

[0102] The battery device 100 provided in some embodiments of the present application, by configuring the connector 40 and the adapter assembly 30 to be detachably connected, facilitates the maintenance of the connector 40 or the adapter assembly 30, and also facilitates the disassembly of the first box body 11 and the second box body 12 to maintain or replace the battery cells 20 accommodated therein, and the first box body 11 and the second box body 12 can also be reused, which helps to reduce the cost of the electrical device.

[0103] In some optional embodiments, the connecting member 40 is in a strip-shaped structure, and an extending direction of the connecting member 40 intersects with the first direction X.

[0104] The connecting member 40 is configured as a strip structure, so that it can be plugged into the adapter assembly 30 , thereby improving the assembly efficiency between the two and thus improving the assembly efficiency of the battery device 100 .

[0105] As an example, when the battery case 10 is configured as a cylindrical structure, the connector 40 may be configured as an annular strip structure, and the extension direction of the connector 40 may be the circumference of the battery case 10 .

[0106] As an example, when the battery case 10 is set to a rectangular structure, the connector 40 can be set to a ring-shaped strip structure, and the extension direction of the connector 40 can be the circumference of the battery case 10; or, the connector 40 can also be set to a linear strip structure, and the extension direction of the connector 40 can be as follows: Figure 7 The second direction Y shown can also be Figure 7 As shown in the third direction Z, the first direction X intersects with the second direction Y and the third direction Z.

[0107] The first direction X may be the height direction of the battery case 10 , the second direction Y may be the width direction of the battery case 10 , and the third direction Z may be the length direction of the battery case 10 .

[0108] like Figure 6 and Figure 7 As shown, for example, the connecting member 40 can be extended along the second direction Y and the third direction Z.

[0109] By arranging the extension direction of the connector 40 to intersect with the first direction X, it is convenient to assemble the adapter assembly 30 on the battery box 10, and it is also convenient to improve the connection strength between the connector 40 and the adapter assembly 30 in the first direction X after the two are plugged in, thereby facilitating the improvement of the connection strength between the first box 11 and the second box 12 in the first direction X, and further facilitating the structural strength of the battery box 10, so as to improve the reliability of the battery device 100.

[0110] In some optional embodiments, the first adapter portion 31 and the second adapter portion 32 are both extended along the extension direction of the connecting member 40 .

[0111] By configuring in the above manner, the connector 40 and the adapter assembly 30 can be better plugged and assembled, and the connection strength between the connector 40 and the adapter assembly 30 along the first direction X can be better improved.

[0112] As an example, when the battery case 10 is configured as a cylindrical structure, the connector 40 , the first adapter portion 31 , and the second adapter portion 32 may all extend along the circumference of the battery case 10 .

[0113] As an example, when the battery case 10 is set to a rectangular structure, the connector 40, the first adapter portion 31, and the second adapter portion 32 can all extend along the circumference of the battery case 10, or the connector 40, the first adapter portion 31, and the second adapter portion 32 can also all extend along the second direction Y and the third direction Z.

[0114] Optionally, the first adapter portion 31 and the second adapter portion 32 can be configured as a whole strip structure. Of course, both of them can also be configured as an intermittent structure, that is, the first adapter portion 31 includes a first sub-adapter portion 311 arranged at intervals, and the second adapter portion 32 includes a second sub-adapter portion 321 arranged at intervals.

[0115] like Figure 8 As shown, in some optional embodiments, the first transition portion 31 includes first sub-transition portions 311 arranged at intervals along the extension direction, and the second transition portion 32 includes second sub-transition portions 321 arranged at intervals along the extension direction.

[0116] Specifically, the first adapter portion 31 may include first sub-transfer portions 311 arranged at intervals along the second direction Y, and may also include first sub-transfer portions 311 arranged at intervals along the third direction Z; the second adapter portion 32 may include second sub-transfer portions 321 arranged at intervals along the second direction Y, and may also include second sub-transfer portions 321 arranged at intervals along the third direction Z.

[0117] The number of the first sub-adapting portions 311 may be two, three, or even more, and correspondingly, the number of the second sub-adapting portions 321 may be two, three, or even more.

[0118] By configuring in the above manner, the material used for the first adapter portion 31 and the second adapter portion 32 can be reduced, thereby helping to reduce the cost of the electrical device and also helping to reduce the weight of the electrical device.

[0119] Optionally, two or more first sub-adapting portions 311 may be distributed at equal intervals along the second direction Y, and of course, may also be arranged at irregular intervals.

[0120] Optionally, two or more second sub-adapting portions 321 may be distributed at equal intervals along the second direction Y, and of course, may also be arranged at irregular intervals.

[0121] In some optional embodiments, the first sub-transition portions 311 and the second sub-transition portions 321 are arranged alternately along the first direction X.

[0122] The staggered arrangement may be understood as that, in one direction, the orthographic projection of the first sub-adapting portion 311 does not overlap with the orthographic projection of the second sub-adapting portion 321 .

[0123] By configuring in this manner, the material cost of the adapter assembly 30 can be reduced while ensuring uniform force between the adapter assembly 30 and the connector 40 after plug-connection.

[0124] In some optional embodiments, the first sub-transition portions 311 and the second sub-transition portions 321 are alternately arranged along the extending direction.

[0125] Specifically, the first sub-adapting portion 311 and the second sub-adapting portion 321 may be extended along the second direction Y, and may also be extended along the third direction Z.

[0126] The alternating arrangement can be understood as that, along the second direction Y or the third direction Z, there is a second sub-transition portion 321 between two adjacent first sub-transition portions 311 , and there is a first sub-transition portion 311 between two adjacent second sub-transition portions 321 .

[0127] By setting it in this way, while reducing costs, it is also possible to improve the uniformity of contact between the connector 40 and the first sub-adapting portion 311 and the second sub-adapting portion 321, so as to reduce stress concentration of the connector 40 and help increase the service life of the electrical device.

[0128] In some optional embodiments, the first sub-transition portions 311 and the second sub-transition portions 321 are staggered along the first direction X, and the first sub-transition portions 311 and the second sub-transition portions 321 are alternately arranged along the second direction Y.

[0129] In some optional embodiments, the connecting member 40 is clamped along the first direction X between the first transition portion 31 and the second transition portion 32 .

[0130] See also Figure 6 and Figure 7 , the connecting member 40 is clamped between the first adapter portion 31 and the second adapter portion 32 along the first direction X, which can be understood as the first adapter portion 31 and the second adapter portion 32 are plugged into the connecting member 40 .

[0131] Such a design enables the connection assembly to be plugged into the connection member 40 to ensure that the first box body 11 and the second box body 12 are connected and fixed.

[0132] In some optional embodiments, the connector 40 has a clamping cavity 401 and an opening 402 connected to the clamping cavity 401, the opening 402 is arranged toward the battery case 10, the first adapter portion 31 and the second adapter portion 32 both extend into the opening 402 and are arranged in the clamping cavity 401, and in the direction from the connector 40 to the battery case 10, the cross-sectional dimension of the side of the connector 40 facing the opening 402 is smaller than the cross-sectional dimension of the side facing away from the opening 402.

[0133] Among them, taking the extension of the connecting member 40 along the second direction Y as a reference, the direction from the connecting member 40 to the battery box 10 can be understood as the third direction Z; taking the extension of the connecting member 40 along the third direction Z as a reference, it can be understood as the second direction Y.

[0134] like Figure 6 As shown, illustratively, in the third direction Z, the cross-sectional dimension of the side of the connector 40 facing the opening 402 is smaller than the cross-sectional dimension of the side facing away from the opening 402. By arranging in this way, the portion of the connector 40 close to the opening 402 can be tightly clamped on the first adapter portion 31 and the second adapter portion 32, so that the connector 40 and the adapter assembly 30 can be connected more tightly, preventing the adapter assembly from escaping from the clamping cavity 401.

[0135] The battery device 100 provided in some embodiments of the present application is configured in the above manner, which helps to improve the stability of the connecting component inserted into the clamping cavity 401 of the connecting member 40.

[0136] See also Figure 7 and Figure 8 In some optional embodiments, the connector 40 is inserted between the first adapter portion 31 and the second adapter portion 32 .

[0137] The connecting member 40 can be plugged into the adapter assembly 30 to ensure that the first box body 11 and the second box body 12 are connected and fixed.

[0138] In some optional embodiments, the connecting member 40 is a columnar structure.

[0139] Such a design facilitates the insertion of the connector 40 into the adapter assembly 30 , thus facilitating assembly.

[0140] like Figure 5 and Figure 6 As shown, in some optional embodiments, in the direction of the connecting member 40 pointing to the battery box 10, the orthographic projection of the first adapter portion 31 overlaps with the orthographic projection of the first box 11, and the orthographic projection of the second adapter portion 32 overlaps with the orthographic projection of the second box 12.

[0141] In this structure, the connecting member 40 can be arranged to be clamped along the first direction X between the first adapter portion 31 and the second adapter portion 32 .

[0142] By arranging in this way, the adapter assembly 30 designed in this way can be plugged between the connecting parts 40 .

[0143] like Figure 7 and Figure 8 As shown, in some optional embodiments, in the direction of the connecting member 40 pointing to the battery box 10, the orthographic projection of the first adapter portion 31 overlaps with the orthographic projection of the second box 12, and the orthographic projection of the second adapter portion 32 overlaps with the orthographic projection of the first box 11.

[0144] In this structure, the connector 40 can be inserted between the first adapter portion 31 and the second adapter portion 32 .

[0145] By arranging in this way, the adapter assembly 30 designed in this way can be plugged into between the connectors 40, and the connectors 40 can also be plugged into between the adapter assemblies 30 designed in this way, which helps to improve the flexibility of use.

[0146] In some optional embodiments, the first adapter portion 31 includes a first bent plate, and the second adapter portion 32 includes a second bent plate, and the first bent plate and the second bent plate are bent along the first direction X in directions away from each other.

[0147] The first bending plate and the second bending plate are bent in directions away from each other along the first direction X, which can be understood as the bending directions of the first bending plate and the second bending plate are opposite.

[0148] The above-mentioned arrangement is helpful to improve the connection strength between the adapter assembly 30 and the connector 40 , thereby helping to improve the structural strength of the battery box 10 .

[0149] like Figure 5 and Figure 6 As shown, as an example, the first adapter portion 31 includes a first bending plate, and the second adapter portion 32 includes a second bending plate. The first bending plate protrudes along the first direction X away from the second box body 12, and the second bending plate protrudes along the first direction X away from the first box body 11. Under this structure, the connector 40 can be configured as a bending structure having a clamping cavity 401 and an opening 402 connected to the clamping cavity 401, and the first bending plate and the second bending plate can be plugged into the clamping cavity 401 in the connector 40 with a bending structure.

[0150] In other examples, the first bending plate can also protrude toward the second box body 12 along the first direction X, and the second bending plate can protrude toward the first box body 11 along the first direction X. Under this structure, the connecting member 40 can be set to a polygonal strip structure to be inserted between the first bending plate and the second bending plate.

[0151] In some optional embodiments, the first adapter portion 31 includes a first arc-shaped plate, and the second adapter portion 32 includes a second arc-shaped plate, and the first arc-shaped plate and the second arc-shaped plate are protruded along the first direction X in directions away from each other.

[0152] The first curved plate and the second curved plate are protruding in the direction away from each other along the first direction X, which can be understood as the bending directions of the first curved plate and the second curved plate are opposite.

[0153] The above-mentioned arrangement is helpful to improve the connection strength between the adapter assembly 30 and the connector 40 , thereby helping to improve the structural strength of the battery box 10 .

[0154] like Figure 7 and Figure 8 As shown, as an example, the first adapter portion 31 includes a first curved plate, and the second adapter portion 32 includes a second curved plate. The first curved plate protrudes along the first direction X toward the second box body 12, and the second curved plate protrudes along the first direction X toward the first box body 11. Under this structure, the connecting member 40 can be set as a columnar structure to be inserted between the first bent plate and the second bent plate.

[0155] In other examples, the first curved plate can also be protruded along the first direction X away from the second box body 12, and the second curved plate can be protruded along the first direction X away from the first box body 11. Under this structure, the connecting member 40 can be set to an arc structure having a clamping cavity 401 and an opening 402 connected to the clamping cavity 401, and the first curved plate and the second curved plate can be inserted into the clamping cavity 401 in the connecting member 40 with an arc structure.

[0156] In some optional embodiments, the first curved plate is protruded along the first direction X toward the second box body 12 , and the second curved plate is protruded along the first direction X toward the first box body 11 .

[0157] Such a design enables the connecting member 40 to be inserted between the first arc-shaped plate and the second arc-shaped plate to ensure that the first box body 11 and the second box body 12 are connected and fixed.

[0158] In some optional embodiments, the first adapter portion 31 is connected to a side of the first box body 11 facing away from the accommodating cavity 101 , and the second adapter portion 32 is connected to a side of the second box body 12 facing away from the accommodating cavity 101 .

[0159] By configuring in the above manner, the adapter assembly 30 does not occupy the space of the accommodating chamber 101 , and the accommodating chamber 101 can accommodate a larger number of battery cells 20 to prevent the energy density of the battery device 100 from being affected.

[0160] like Figure 6As shown, in some optional embodiments, the first box body 11 has a protruding first flange 111 on the side facing away from the accommodating cavity 101, the first adapter portion 31 is connected to the side of the first flange 111 facing away from the accommodating cavity 101, the second box body 12 has a protruding second flange 121 on the side facing away from the accommodating cavity 101, and the second adapter portion 32 is connected to the side of the second flange 121 facing away from the accommodating cavity 101.

[0161] The first flange 111 can buffer the force transmitted by the first adapter portion 31 , and the second flange 121 can buffer the force transmitted by the second adapter portion 32 , so as to increase the service life of the battery box 10 and the service life of the battery device 100 .

[0162] Furthermore, by providing the first flange 111 and the second flange 121 , it is also convenient to position the first box body 11 and the second box body 12 , which helps to improve the sealing performance of the connection between the first box body 11 and the second box body 12 .

[0163] In some optional embodiments, the first adapter portion 31 is disposed on a side of the first box body 11 along the first direction X toward the second box body 12 .

[0164] By setting it in this way, the distance between the first adapter part 31 and the second adapter part 32 in the first direction X can be reduced, so that the structural size of the connector 40 plugged into the adapter component 30 can be reduced, so as to reduce the cost of the connector 40, thereby helping to reduce the cost of the battery device 100, and it can also reduce the space occupied by the adapter component 30 and the connector 40, thereby improving the space utilization of the battery device 100.

[0165] Exemplarily, the first box body 11 has a first opening 402 disposed along the first direction X toward the second box body 12 , and the first adapter portion 31 is disposed around the first opening 402 .

[0166] In some optional embodiments, the second adapter portion 32 is disposed on a side of the second box body 12 along the first direction X facing the first box body 11 .

[0167] By setting it in this way, the distance between the first adapter part 31 and the second adapter part 32 in the first direction X can be reduced, so that the structural size of the connector 40 plugged into the adapter component 30 can be reduced, so as to reduce the cost of the connector 40, thereby helping to reduce the cost of the battery device 100, and it can also reduce the space occupied by the adapter component 30 and the connector 40, thereby improving the space utilization of the battery device 100.

[0168] Exemplarily, the second box body 12 has a first opening 402 disposed along the first direction X toward the second box body 12 , and the second adapter portion 32 is disposed around the second opening 402 .

[0169] In some optional embodiments, the first adapter portion 31 is disposed on a side of the first box body 11 along the first direction X toward the second box body 12 , and the second adapter portion 32 is disposed on a side of the second box body 12 along the first direction X toward the first box body 11 .

[0170] By configuring in this manner, the cost of the battery device 100 can be better reduced, and the space utilization of the battery device 100 can be better improved.

[0171] In some optional embodiments, the first adapter portion 31 is disposed around the first box body 11 , and the second adapter portion 32 is disposed around the second box body 12 .

[0172] The first adapter part 31 is arranged around the first box body 11 , which can be understood as the first adapter part 31 is arranged around the first box body 11 . For example, when the first box body 11 is a rectangular structure, the four side walls of the first box body 11 are connected to the first adapter part 31 .

[0173] The second adapter part 32 is arranged around the second box body 12 , which can be understood as the second adapter part 32 is arranged around the second box body 12 . For example, when the second box body 12 is a rectangular structure, the four side walls of the second box body 12 are connected to the first adapter part 31 .

[0174] By configuring in the above manner, the connector 40 is also configured around the battery box 10 , which helps to improve the connection strength between the first box 11 and the second box 12 , prevents them from being displaced or even separated during transportation, and improves the protection effect of the battery cell 20 , thereby improving the reliability of the battery device 100 .

[0175] In some optional embodiments, the first box body 11 and the first adapter portion 31 are an integrated structure.

[0176] By integrally forming the first box body 11 and the first adapter portion 31 , it is helpful to improve the manufacturing efficiency and the connection strength between the two, thereby improving the reliability of the battery device 100 .

[0177] Optionally, the first box body 11 and the first adapter portion 31 can be manufactured separately first and then integrated into one by injection molding.

[0178] In some optional embodiments, the second box body 12 and the second adapter portion 32 are an integrated structure.

[0179] By integrally forming the second box body 12 and the second adapter portion 32 , it is helpful to improve the manufacturing efficiency and the connection strength between the two, thereby improving the reliability of the battery device 100 .

[0180] Optionally, the second box body 12 and the second adapter portion 32 can be manufactured separately first and then integrated into one by injection molding.

[0181] In some optional embodiments, the first box body 11 and the first adapter portion 31 are an integrated structure, and the second box body 12 and the second adapter portion 32 are also an integrated structure.

[0182] In some optional embodiments, the battery device 100 further includes a sealing gasket, which is clamped between the first box body 11 and the second box body 12 .

[0183] By sandwiching a sealing gasket between the first box body 11 and the second box body 12 , the sealing performance of the battery box body 10 is improved, so as to better protect the battery cells 20 , thereby improving the reliability of the battery device 100 .

[0184] In some embodiments, the sealing gasket is clamped between the first flange 111 of the first box body 11 and the second flange 121 of the second box body 12 .

[0185] By configuring in this manner, the area of ​​the sealing gasket can be increased, thereby increasing the connection area between the sealing gasket and the battery case 10 , so as to better enhance the sealing performance of the battery case 10 .

[0186] According to some embodiments of the present application, the present application further provides an electrical device, including the battery device 100 provided in any of the above embodiments, and the battery device 100 is used to store or provide electrical energy.

[0187] See also Figure 2 , Figures 5 to 8 The embodiment of the present application provides a battery device 100, including a battery case 10, a battery cell 20, a transfer assembly, a connector 40 and a sealing gasket.

[0188] The battery case 10 includes a first case 11 and a second case 12 which are arranged opposite to each other along a first direction X. The first case 11 has a first flange 111 protrudingly arranged on one side facing away from the accommodating cavity 101, and the second case 12 has a second flange 121 protrudingly arranged on one side facing away from the accommodating cavity 101. The sealing gasket is clamped between the first case 11 and the second case 12. The first case 11 and the second case 12 enclose the accommodating cavity 101, and the battery cell 20 is arranged in the accommodating cavity 101.

[0189] The adapter assembly 30 is disposed on the battery case 10, and includes a first adapter portion 31 and a second adapter portion 32. The first adapter portion 31 is disposed around the first case 11 and disposed on a side of the second case 12 facing the first case 11 along the first direction X, and the first adapter portion 31 is connected to a side of the first flange 111 facing away from the accommodating cavity 101. The second adapter portion 32 is disposed around the second case 12 and disposed on a side of the first case 11 facing the second case 12 along the first direction X, and the second adapter portion 32 is connected to a side of the second flange 121 facing away from the accommodating cavity 101. The first case 11 and the first adapter portion 31 are an integrated structure, and the second case 12 and the second adapter portion 32 are an integrated structure.

[0190] The connecting member 40 and the adapter assembly 30 are detachably connected to each other, and one of them is plugged into the other to connect and fix the first adapter portion 31 and the second adapter portion 32, and the first adapter portion 31 and the second adapter portion 32 are both in contact with the connecting member 40 along the first direction X. The connecting member 40 is a strip-shaped structure, and the extending direction of the connecting member 40 intersects with the first direction X. The first adapter portion 31 and the second adapter portion 32 are both extended along the extending direction of the connecting member 40.

[0191] The connector 40 is clamped on the first adapter portion 31 and the second adapter portion 32 along the first direction X, and has a clamping cavity 401 and an opening 402 connected to the clamping cavity 401, the opening 402 is arranged toward the battery case 10, the first adapter portion 31 and the second adapter portion 32 both extend into the opening 402 and are arranged in the clamping cavity 401, in the direction from the connector 40 to the battery case 10, the cross-sectional dimension of the side of the connector 40 facing the opening 402 is smaller than the cross-sectional dimension of the side facing away from the opening 402, the orthographic projection of the first adapter portion 31 overlaps with the orthographic projection of the first case 11, and the orthographic projection of the second adapter portion 32 overlaps with the orthographic projection of the second case 12. The first adapter portion 31 includes a first bent plate, and the second adapter portion 32 includes a second bent plate, and the first bent plate and the second bent plate are bent along the first direction X in directions facing away from each other.

[0192] Alternatively, the connector 40 is a columnar structure and is inserted between the first adapter portion 31 and the second adapter portion 32. The first adapter portion 31 includes a first sub-adapter portion 311 spaced apart along the extension direction, and the second adapter portion 32 includes a second sub-adapter portion 321 spaced apart along the extension direction. The first sub-adapter portion 311 and the second sub-adapter portion 321 are staggered along the first direction X and alternately arranged along the extension direction. In the direction from the connector 40 to the battery case 10, the orthographic projection of the first adapter portion 31 overlaps with the orthographic projection of the second case 12, and the orthographic projection of the second adapter portion 32 overlaps with the orthographic projection of the first case 11. The first adapter portion 31 includes a first arc plate, and the second adapter portion 32 includes a second arc plate. The first arc plate protrudes toward the second case 12 along the first direction X, and the second arc plate protrudes toward the first case 11 along the first direction X.

[0193] 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.

[0194] 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 device, characterized in that: include: A battery box, comprising a first box and a second box arranged opposite to each other along a first direction, wherein the first box and the second box are enclosed to form a receiving cavity; A battery cell, disposed in the accommodation cavity; An adapter assembly is arranged on the battery box, and the adapter assembly includes a first adapter part and a second adapter part, the first adapter part is connected to the first box, and the second adapter part is connected to the second box; A connecting piece, wherein one of the connecting piece and the adapter assembly is plugged into the other to connect and fix the first adapter portion and the second adapter portion, and the first adapter portion and the second adapter portion are both in contact with the connecting piece along the first direction.

2. The battery device according to claim 1, characterized in that: The connecting member and the adapter assembly are detachably connected to each other.

3. The battery device according to claim 1, characterized in that: The connecting member is in a strip-shaped structure, and an extending direction of the connecting member intersects with the first direction.

4. The battery device according to claim 3, characterized in that: The first adapter portion and the second adapter portion are both extended along the extension direction of the connecting member.

5. The battery device according to claim 3, characterized in that: The first transition portion includes first sub-transition portions that are spaced apart along the extending direction, and the second transition portion includes second sub-transition portions that are spaced apart along the extending direction.

6. The battery device according to claim 5, characterized in that: The first sub-transition portions and the second sub-transition portions are alternately arranged along the first direction.

7. The battery device according to claim 5, characterized in that: The first sub-transition portions and the second sub-transition portions are alternately arranged along the extending direction.

8. The battery device according to claim 1, characterized in that: The connecting member is clamped on the first transition portion and the second transition portion along the first direction.

9. The battery device according to claim 8, characterized in that: The connector has a clamping cavity and an opening connected to the clamping cavity, the opening is arranged toward the battery case, the first adapter portion and the second adapter portion both extend into the opening and are arranged in the clamping cavity, and in the direction from the connector to the battery case, the cross-sectional dimension of the connector on the side facing the opening is smaller than the cross-sectional dimension of the side facing away from the opening.

10. The battery device according to claim 1, characterized in that: The connecting member is inserted between the first adapter portion and the second adapter portion.

11. The battery device according to claim 10, characterized in that: The connecting piece is in a columnar structure.

12. The battery device according to any one of claims 1 to 9, characterized in that: In the direction from the connecting member to the battery box, the orthographic projection of the first adapter portion overlaps with the orthographic projection of the first box, and the orthographic projection of the second adapter portion overlaps with the orthographic projection of the second box.

13. The battery device according to any one of claims 1 to 11, characterized in that: In the direction from the connecting member to the battery box, the orthographic projection of the first adapter portion overlaps with the orthographic projection of the second box, and the orthographic projection of the second adapter portion overlaps with the orthographic projection of the first box.

14. The battery device according to any one of claims 1 to 11, characterized in that: The first adapter portion includes a first bent plate, the second adapter portion includes a second bent plate, and the first bent plate and the second bent plate are bent along the first direction toward directions away from each other.

15. The battery device according to any one of claims 1 to 11, characterized in that: The first adapter portion includes a first arc-shaped plate, and the second adapter portion includes a second arc-shaped plate. The first arc-shaped plate and the second arc-shaped plate are protruded in a direction away from each other along the first direction.

16. The battery device according to claim 15, characterized in that: The first arc plate is protruded toward the second box body along the first direction, and the second arc plate is protruded toward the first box body along the first direction.

17. The battery device according to any one of claims 1 to 11, characterized in that: The first adapter is connected to a side of the first box body facing away from the accommodating cavity, and the second adapter is connected to a side of the second box body facing away from the accommodating cavity.

18. The battery device according to claim 17, characterized in that:The first box body has a protruding first flange on the side facing away from the accommodating cavity, the first adapter is connected to the side of the first flange facing away from the accommodating cavity, the second box body has a protruding second flange on the side facing away from the accommodating cavity, and the second adapter is connected to the side of the second flange facing away from the accommodating cavity.

19. The battery device according to any one of claims 1 to 11, characterized in that: The first adapter portion is disposed on a side of the first box body facing the second box body along the first direction, and / or the second adapter portion is disposed on a side of the second box body facing the first box body along the first direction.

20. The battery device according to any one of claims 1 to 11, characterized in that: The first adapter portion is disposed around the first box body, and the second adapter portion is disposed around the second box body.

21. The battery device according to any one of claims 1 to 11, characterized in that: The first box body and the first adapter part are an integrated structure, and / or the second box body and the second adapter part are an integrated structure.

22. The battery device according to any one of claims 1 to 11, characterized in that: The battery device further includes a sealing gasket, which is clamped between the first box body and the second box body.

23. An electrical device, characterized in that: The invention comprises a battery device according to any one of claims 1 to 22, wherein the battery device is used to store or provide electrical energy.

Images