Battery box body, battery and electric device

Abstract

The utility model provides a battery box body, a battery and a power utilization device, and the battery box body comprises at least two end plates; the side plates and the end plates are alternately arranged and define a containing cavity; wherein one of the adjacent end plate and side plate is provided with a clamping groove, the other one of the adjacent end plate and side plate is provided with a clamping part matched with the clamping groove, and the clamping part is clamped and fixed in the clamping groove so as to fix the relative position of the adjacent side plate and end plate. According to the battery box body, the battery and the power utilization device provided by the invention, the yield of the battery box body in the production process is relatively high, so that the reliability of the battery box body is improved.

Description

Technical Field

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

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

[0003] In the related art, the battery case is affected by the connection method between its components, which makes its own yield low and reliability poor during the molding process. Utility Model Content

[0004] In view of the above problems, the present application provides a battery case, a battery and an electrical device. The battery case has a high yield during the production process, thereby improving the reliability of the battery case.

[0005] In a first aspect, the present application provides a battery case, comprising: at least two end plates; at least two side plates, the side plates and the end plates being alternately arranged and enclosing to form a accommodating cavity; wherein, a card slot is provided on one of the adjacent end plates and the side plates, and a card connection portion matching the card slot is provided on the other, and the card connection portion is card-connected and fixed to the card slot to fix the relative positions of the adjacent side plates and the end plates.

[0006] In a battery case provided by an embodiment of the present application, a receiving cavity formed by alternately setting at least two end plates and at least two side plates can be used to place battery cells, so as to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells. Since one of the two adjacent end plates and side plates is provided with a card slot, and the other is provided with a card connection portion matching the card slot, and the card connection portion is fixed to the card slot, the connection between the adjacent side plates and the end plates can be ensured without welding or other methods, thereby improving the yield of the battery case during the production process, and further improving the reliability of the battery case.

[0007] In some embodiments, the side panel includes a main body and a transfer body arranged on both sides of the main body in the first direction. The transfer body is arranged to intersect with the main body. The transfer body at least partially abuts against the outer wall surface of the end plate facing away from the accommodating cavity. The side panel is clamped and fixed to the end plate through the transfer body.

[0008] In a battery box provided by an embodiment of the present application, the end plates and the side plates are alternately arranged and enclosed to form a receiving cavity, that is, the arrangement between the end plates and the side plates will have a directional turning. By making the side plates include a main body and an adapter arranged on the main body, and making the adapter and the main body intersecting, it is convenient to adapt to the change of the orientation between the end plates and the side plates, and ensure the clamping and fixing requirements between the side plates and the end plates. In addition, the adapter at least partially abuts against the outer wall surface of the end plate away from the receiving cavity, which can limit the freedom of movement of the end plate in the first direction.

[0009] In some embodiments, the adapter body includes an enclosing portion and a clamping portion arranged at at least one end of the enclosing portion in the second direction. A clamping slot is arranged at at least one end of the end plate in the second direction. The clamping portion extends into the clamping slot and is clamped and fixed with the clamping slot. The second direction intersects with the first direction.

[0010] A battery case provided by an embodiment of the present application makes the adapter body include an enclosure and a clamping portion, and limits the setting position of the clamping portion on the enclosure, which is beneficial to the start of the slot and the clamping fixation between the clamping portion and the slot, thereby ensuring the connection strength between the end plate and the side plate.

[0011] In some embodiments, the end plates are respectively provided with card slots on both sides of the second direction, the enclosing portion is distributed with card connection portions at both ends of the second direction, and the card slots and the card connection portions are arranged one to one and are card-connected and fixed.

[0012] A battery box provided by an embodiment of the present application has card slots on both sides of the end plate in the second direction, and the card slots and the card connecting parts are arranged one to one. The card slots can clamp the limit end plates at both ends in the second direction through the card connecting parts and connect them to the end plates, thereby improving the reliability of the connection between the end plates and the side plates.

[0013] In some embodiments, the card slot is recessed into the card slot by the end surface of the end plate in the second direction, and the card slot passes through the outer wall surface of the end plate away from the accommodating cavity.

[0014] The battery box provided in one embodiment of the present application, through the above-mentioned arrangement, facilitates the clamping portion connected to the enclosure portion to extend into the clamping slot, thereby ensuring the clamping limit requirements between the side plate and the end plate.

[0015] In some embodiments, along the second direction, the depth of the clamping groove is greater than or equal to the thickness of the clamping portion.

[0016] The battery box provided in one embodiment of the present application, through the above-mentioned arrangement, facilitates the clamping portion connected to the enclosure portion to extend into the clamping slot, thereby ensuring the clamping limit requirements between the side plate and the end plate.

[0017] In some embodiments, the main body, the enclosing portion and the clamping portion are an integrated structure.

[0018] The battery case provided by an embodiment of the present application can, through the above-mentioned arrangement, ensure the connection strength between the main body, the enclosure and the clamping part, thereby improving the safety of the battery cell. At the same time, it is conducive to making the side panel formed by bending an integral blank plate, so that the side panel and the end plate can be assembled with each other by bending the clamping part into the clamping groove, thereby reducing the difficulty of assembly.

[0019] In some embodiments, the main body, the enclosure portion and the clamping portion are all plate-like structures, the main body and the enclosure portion are intersected and connected by an arcuate transition, and the enclosure portion and the clamping portion are intersected and connected by an arcuate transition.

[0020] The battery case provided by one embodiment of the present application, through the above-mentioned configuration, enables the entire clamping portion to be bent relative to the enclosing portion, and the entire enclosing portion to be bent relative to the main body, thereby reducing the difficulty of molding and avoiding stress concentration.

[0021] In some embodiments, a recess is provided on the end plate, the recess is formed by a depression on a surface of the end plate facing away from the accommodating cavity, and a portion of the side plate extends into the recess.

[0022] A battery case provided by an embodiment of the present application provides a recess on the end plate so that the enclosure portion can be at least partially located in the recess after being bent relative to the main body. This can not only position the side plate, but also prevent the enclosure portion and other portions from protruding from the end plate in the first direction from being too large, thereby preventing the overall area occupied by the battery case in the first direction from being increased.

[0023] In some embodiments, a connecting seat is disposed on the side plate, and the connecting seat protrudes out of the side plate toward a side away from the accommodating cavity.

[0024] The battery box provided in one embodiment of the present application, through the above-mentioned configuration, is conducive to connecting the battery box with other components through the connecting seat, thereby ensuring the fixation of the battery box.

[0025] In a second aspect, the present application provides a battery, including the above-mentioned battery case; a battery cell, which is arranged in the accommodating cavity.

[0026] In a third aspect, the present application provides an electrical device comprising the above-mentioned battery.

[0027] 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

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of the structure of a battery provided in one embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the exploded structure of a battery cell provided in one embodiment of the present application;

[0032] Figure 4 It is a structural schematic diagram of a battery box provided in one embodiment of the present application;

[0033] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0034] Figure 6 It is an exploded schematic diagram of a battery box provided by an embodiment of the present application;

[0035] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle;

[0036] Figure 8 It is a schematic diagram of the bending of the clamping portion relative to the enclosing portion.

[0037] The reference numerals in the specific implementation manner are as follows:

[0038] 1000-Vehicles;

[0039] 100-battery; 200-controller; 300-motor;

[0040] 10-battery box;

[0041] 11-end plate; 111-slot; 112-recess;

[0042] 12-side plate; 121-body; 122-adapter; 1221-enclosing part; 1222-clamping part; 123-connecting seat;

[0043] 13- Accommodating cavity;

[0044] 20-battery cell; 21-housing; 22-electrode assembly; 23-end cap;

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

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0053] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack.

[0054] The battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0055] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc., which are not limited in the embodiments of the present application.

[0056] A battery generally includes a battery case for encapsulating one or more battery cells. The battery case can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells. The applicant has noticed that the battery case in the related art is affected by the connection method between its components, which makes its own yield low and reliability poor during the molding process. Further research found that the side panels and end panels of the battery case in the related art are usually connected by welding. Although the connection between the side panels and the end panels can be achieved, the welding connection method may cause defects such as blowouts, welding deviations, cold welding, and undercuts, which affect the yield of the battery case and the reliability of the battery case. In addition, welding equipment must be set up accordingly, which increases the investment cost of the equipment.

[0057] In order to alleviate the problem of yield and reliability of the battery case, the applicant has found that the defects caused by the welding method can be avoided by changing the connection method between the components of the battery case, thereby improving the yield and reliability of the battery case.

[0058] Based on the above considerations, in order to solve the problems of low yield and reliability of the battery case, the inventors have designed a battery case after in-depth research, wherein the battery case includes at least two end plates and at least two side plates, and the side plates and the end plates are alternately arranged and enclosed to form a accommodating cavity; wherein, a card slot is provided on one of the adjacent end plates and side plates, and a card connecting portion matching the card slot is provided on the other, and the card connecting portion is fixed to the card slot to fix the relative positions of the adjacent side plates and end plates.

[0059] In such a battery cell, the accommodating cavity formed by alternately setting at least two end plates and at least two side plates can be used to place the battery cell, so as to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell. Since one of the two adjacent end plates and side plates is provided with a card slot, and the other is provided with a card connection portion matching the card slot, and the card connection portion is fixed to the card slot, the connection between the adjacent side plates and the end plates can be ensured without welding or other methods, avoiding defects such as explosion holes, welding deviation, cold welding, and undercutting, thereby improving the yield of the battery box during the production process, and thus improving the reliability of the battery box.

[0060] The battery case described in the embodiments of the present application is suitable for batteries and electrical devices using batteries.

[0061] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0062] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery. However, for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0063] like Figure 1As shown, the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is arranged inside the vehicle 1000, and the battery 100 can be arranged at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000, for example, the battery 100 can be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for the starting, navigation and driving power requirements of the vehicle 1000.

[0064] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] like Figure 2 As shown, the battery 100 includes a battery case 20 and a battery cell 20 (not shown), and the battery cell 20 is accommodated in the battery case 10 .

[0066] In the battery 100, there can be one or more battery cells 20. If there are more than one battery cell 20, the battery cells 20 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the battery cells 20 are both connected in series and in parallel. The battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the battery cells 20 is accommodated in the box; of course, the battery cells 20 can also be connected in series, in parallel, or in a mixed connection to form a battery module, and then the battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and then accommodated in the box.

[0067] In the present application, the battery cell 20 may include a lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell 20 may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. The battery cell 20 is 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 the present application do not limit this. However, for the sake of simplicity, the following embodiments are all described using square battery cells as an example.

[0068] like Figure 3 As shown, the battery cell 20 includes an end cover 23 , a shell 21 and an electrode assembly 22 .

[0069] The end cap 23 refers to a component that covers the opening of the shell 21 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 23 can be adapted to the shape of the shell 21 to match the shell 21. Optionally, the end cap 23 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 23 is not easily deformed when squeezed and collided, so that the battery cell 20 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals can be provided on the end cap 23. The electrode terminal can be used to electrically connect to the electrode assembly 22 for outputting or inputting electrical energy of the battery cell 20. In some embodiments, the end cap 23 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap, and the insulating member may be used to isolate the electrical connection components in the housing 21 from the end cap 23 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0070] The shell 21 is a component used to cooperate with the end cap 23 to form the internal environment of the battery cell 20, wherein the formed internal environment can be used to accommodate the electrode assembly 22, the electrolyte (not shown in the figure) and other components. The shell 21 and the end cap can be independent components, and an opening can be set on the shell 21, and the internal environment of the battery cell 20 is formed by covering the opening with the end cap 23 at the opening. Without limitation, the end cap 23 and the shell 21 can also be integrated. Specifically, the end cap 23 and the shell 21 can form a common connection surface before other components are put into the shell, and when the interior of the shell 21 needs to be encapsulated, the end cap 23 covers the shell 21. The shell 21 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 21 can be determined according to the specific shape and size of the electrode assembly 22. The material of the shell 21 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0071] The electrode assembly 22 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 22 may be contained in the housing 21. The electrode assembly 22 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 22, and the parts of the positive and negative electrode sheets without active materials each constitute a pole ear (not shown in the figure). The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery cell 20, the positive active material and the negative active material react with the electrolyte, and the pole ears connect the electrode terminals to form a current loop.

[0072] like Figures 4 to 7 As shown, a battery box 10 provided in one embodiment of the present application includes at least two end plates 11 and at least two side plates 12, and the side plates 12 and the end plates 11 are alternately arranged and enclosed to form a receiving cavity 13. Among them, one of the adjacent end plates 11 and the side plates 12 is provided with a card slot 111, and the other is provided with a card connection portion 1222 matching the card slot 111, and the card connection portion 1222 is fixedly connected to the card slot 111 to fix the relative position of the adjacent side plates 12 and the end plates 11.

[0073] The number of the end plates 11 may be two, three or more, and may be two.

[0074] The number of the side plates 12 may be two, three or more, and may be two. The number of the side plates 12 may be equal to the number of the end plates 11 and may be distributed alternately.

[0075] The accommodating cavity 13 formed by the alternating distribution of the end plates 11 and the side plates 12 may be a polygonal cavity, such as a quadrilateral cavity, a hexagonal cavity, etc.

[0076] The lengths of the end plate 11 and the side plate 12 may be equal, or one may be larger than the other, for example, the side plate 12 may be larger than the end plate 11 .

[0077] Adjacent end plates 11 and side plates 12 may be understood as: in the direction in which at least two side plates 12 and at least two end plates 11 are alternately distributed, end plates 11 and side plates 12 that are connected may be understood as adjacent end plates 11 and side plates 12 .

[0078] The end plate 11 may be provided with a card slot 111 , and the side plate 12 may be provided with a card connection portion 1222 . Of course, the end plate 11 may also be provided with a card connection portion 1222 , and the side plate 12 may also be provided with a card slot 111 .

[0079] The number of the card slots 111 provided on one of the adjacent end plates 11 and side plates 12 may be one or more than two, and the number of the card connection portions 1222 provided on the other one may be one or more than two.

[0080] The slot 111 can be formed by removing part of the material from the end plate 11 and the side plate 12. The shape of the clamping portion 1222 can match the shape of the slot 111, and it can be partially or completely located in the slot 111.

[0081] The clamping fixation can be understood as the clamping portion 1222 partially or completely extending into the clamping slot 111 and being limited in the clamping slot 111, so that the relative position between the side plate 12 and the end plate 11 is fixed.

[0082] The battery case 10 provided in one embodiment of the present application has a receiving cavity 13 formed by alternately setting at least two end plates 11 and at least two side plates 12 to be used for placing battery cells 20, so as to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 20. Since one of the adjacent end plates 11 and side plates 12 is provided with a card slot 111, and the other is provided with a card connection portion 1222 matching the card slot 111, and the card connection portion 1222 is fixedly connected to the card slot 111, the connection between the adjacent side plates 12 and the end plates 11 can be ensured without welding or other methods, thereby improving the yield of the battery case 10 during the production process, and further improving the reliability of the battery case 10.

[0083] In some optional embodiments, a battery box 10 provided by an embodiment of the present application, the side panel 12 includes a main body 121 and an adapter body 122 arranged on both sides of the main body 121 in a first direction X, the adapter body 122 is arranged to intersect with the main body 121, the adapter body 122 at least partially abuts against the outer wall surface of the end plate 11 away from the accommodating cavity 13, and the side panel 12 is clamped and fixed to the end plate 11 through the adapter body 122.

[0084] The adapter body 122 and the main body 121 are arranged to intersect each other, and the angle between the two can be any value between 80° and 100°, and can be any value between 85° and 95°, and can be 90°.

[0085] The adapter body 122 and the main body 121 may be in an integrated structure, for example, formed by bending an integrated blank, or the two may be connected by fasteners or the like.

[0086] In a battery case 10 provided by an embodiment of the present application, the end plates 11 and the side plates 12 are alternately arranged and enclosed to form a receiving cavity 13, that is, the arrangement between the end plates 11 and the side plates 12 will have a directional turn. By making the side plate 12 include a main body 121 and an adapter body 122 arranged on the main body 121, and making the adapter body 122 intersecting with the main body 121, it is convenient to adapt to the change of orientation between the end plate 11 and the side plate 12, and ensure the clamping and fixing requirements between the side plate 12 and the end plate 11. In addition, the adapter body 122 at least partially abuts against the outer wall surface of the end plate 11 away from the receiving cavity 13, which can limit the freedom of movement of the end plate 11 in the first direction X.

[0087] In some optional embodiments, a battery case 10 provided by an embodiment of the present application, the adapter body 122 includes an enclosure portion 1221 and a clamping portion 1222 arranged at at least one end of the enclosure portion 1221 in the second direction Y, and a clamping slot 111 is provided at at least one end of the end plate 11 in the second direction Y, the clamping portion 1222 extends into the clamping slot 111 and is clamped and fixed with the clamping slot 111, and the second direction Y intersects with the first direction X.

[0088] The angle between the first direction X and the second direction Y can be any value between 80° and 100°, and can be any value between 85° and 95°, and can be 90°. Optionally, the first direction X can be the length direction of the side plate 12, and the second direction Y can be the height direction of the end plate 11.

[0089] The clamping portion 1222 may be provided at one end of the enclosing portion 1221 in the second direction Y, or the clamping portion 1222 may be provided at both ends of the enclosing portion 1221 in the second direction Y.

[0090] The number of the card slots 111 on the end plate 11 can be equal to the number of the card connection portions 1222 provided on the enclosing portion 1221 and can be arranged one to one.

[0091] A battery case 10 provided in an embodiment of the present application makes the adapter body 122 include an enclosure portion 1221 and a clamping portion 1222, and limits the setting position of the clamping portion 1222 on the enclosure portion 1221, which is beneficial to the start of the slot 111 and the clamping fixation between the clamping portion 1222 and the slot 111, thereby ensuring the connection strength between the end plate 11 and the side plate 12.

[0092] In some optional embodiments, in a battery case 10 provided by an embodiment of the present application, the end plate 11 is respectively provided with card slots 111 on both sides of the second direction Y, and the enclosing portion 1221 is distributed with card connecting portions 1222 at both ends of the second direction Y, and the card slots 111 and the card connecting portions 1222 are arranged one-to-one and fixed by card connecting.

[0093] The number of the clamping parts 1222 provided at each end of the enclosing part 1221 may be one or more than two. The number of the clamping parts 1222 at both ends of the enclosing part 1221 in the second direction Y may be equal. Of course, the number of the clamping parts 1222 of one may be greater than that of the other.

[0094] A battery case 10 provided in an embodiment of the present application has a card slot 111 provided on both sides of the end plate 11 in the second direction Y, and the card slot 111 and the card connecting portion 1222 are arranged one-to-one. The card slot 111 can be clamped and connected to the end plate 11 through the card connecting portion 1222 at both ends in the second direction Y, thereby improving the reliability of the connection between the end plate 11 and the side plate 12.

[0095] In some optional embodiments, in a battery case 10 provided by an embodiment of the present application, the card slot 111 is recessed into the card slot 111 by the end surface of the end plate 11 in the second direction Y, and the card slot 111 passes through the outer wall surface of the end plate 11 away from the accommodating cavity 13.

[0096] That is to say, the card slot 111 can be opened in the second direction Y and the first direction X.

[0097] The battery case 10 provided in one embodiment of the present application, through the above arrangement, facilitates the clamping portion 1222 connected to the enclosure portion 1221 to extend into the clamping slot 111, thereby ensuring the clamping limit requirement between the side plate 12 and the end plate 11.

[0098] In some optional embodiments, in a battery case 10 provided in one embodiment of the present application, the body 121 , the enclosure portion 1221 , and the clamping portion 1222 are an integrated structure.

[0099] like Figures 5 to 8 As shown, the battery case 10 provided in one embodiment of the present application can, through the above-mentioned arrangement, ensure the connection strength between the main body 121, the enclosure 1221, and the clamping portion 1222, thereby improving the safety of the battery cell 20. At the same time, it is conducive to making the side panel 12 formed by bending an integral blank plate, so that the side panel 12 and the end panel 11 can be assembled with each other by bending the clamping portion 1222 into the clamping slot 111, thereby reducing the difficulty of assembly.

[0100] In some optional embodiments, in a battery case 10 provided by an embodiment of the present application, the main body 121, the enclosure 1221 and the clamping portion 1222 are all plate-like structures, the main body 121 and the enclosure 1221 are intersected and connected by an arcuate transition, and the enclosure 1221 and the clamping portion 1222 are intersected and connected by an arcuate transition.

[0101] like Figure 8As shown, the battery case 10 provided in one embodiment of the present application, through the above-mentioned configuration, enables the clamping portion 1222 as a whole to be bent relative to the enclosure portion 1221, and the enclosure portion 1221 as a whole to be bent relative to the main body 121, thereby reducing the difficulty of molding and avoiding stress concentration.

[0102] Continue reading Figures 4 to 8 As shown, in some optional embodiments, a battery case 10 provided in one embodiment of the present application has a recess 112 disposed on the end plate 11 , the recess 112 being formed by a surface depression of the end plate 11 away from the accommodating cavity 13 , and a portion of the side plate 12 extends into the recess 112 .

[0103] A recess 112 may be provided on the end plate 11 corresponding to each side plate 12 , and the recess 112 may be formed by removing material from the surface of the end plate 11 away from the accommodating cavity 13 . The enclosing portion 1221 of the side plate 12 may be located in the recess 112 .

[0104] A battery case 10 provided in an embodiment of the present application has a recess 112 provided on the end plate 11 so that the enclosure 1221 can be at least partially located in the recess 112 after being bent relative to the main body 121. This can not only position the side plate 12, but also prevent the enclosure 1221 and other parts from protruding from the end plate 11 in the first direction X from being too large, thereby preventing the overall occupied area of ​​the battery case 10 in the first direction X from increasing.

[0105] Optionally, the recess 112 may be arranged to penetrate the two end surfaces of the end plate 11 in the second direction Y. Optionally, the recess 112 may be arranged to penetrate the end surface of the end plate 11 disposed on the side of the side plate 12 in the third direction Z. Through the above arrangement, the accommodation and positioning of the enclosing portion 1221 are facilitated. The third direction Z intersects with the first direction X and the second direction Y, and may be perpendicular to each other.

[0106] In some optional embodiments, in a battery box 10 provided in one embodiment of the present application, a connecting seat 123 is provided on the side plate 12 , and the connecting seat 123 is provided to protrude from the side plate 12 toward a side away from the accommodating cavity 13 .

[0107] The connection seat 123 can be in at least one of a flange plate shape and a lug shape.

[0108] The battery box 10 provided in one embodiment of the present application, through the above configuration, is conducive to connecting the battery box 10 with other components through the connecting seat 123, thereby ensuring the fixation of the battery box 10.

[0109] like Figures 4 to 8As shown, a battery box 10 provided in one embodiment of the present application includes two end plates 11 and two side plates 12, which are alternately arranged and enclosed to form a receiving cavity 13, and the receiving cavity 13 can be a rectangular cavity. In adjacent end plates 11 and side plates 12, a card slot 111 is provided on the end plate 11, and a card connection portion 1222 matching the card slot 111 is provided on the side plate 12, and the card connection portion 1222 is fixedly connected to the card slot 111 to fix the relative position of the adjacent side plates 12 and end plates 11. The side plate 12 includes a main body 121 and a transfer body 122 arranged on both sides of the main body 121 in the first direction X. The adapter 122 includes an enclosure 1221 and a clamping portion 1222 disposed at both ends of the enclosure 1221 in the second direction Y. Both ends of the end plate 11 in the second direction Y have a clamping groove 111. The clamping groove 111 and the clamping portion 1222 are arranged one-to-one and clamped and fixed. The second direction Y is perpendicular to the first direction X. The clamping groove 111 is recessed from the end surface of the end plate 11 in the second direction Y into the clamping groove 111. The clamping groove 111 penetrates the outer wall surface of the end plate 11 away from the accommodating cavity. The orthographic projection of the clamping groove 111 in the second direction Y can be a rectangular groove. The orthographic projection of the clamping portion 1222 in the second direction Y can be a rectangular plate. The depth of the clamping groove 111 is greater than or equal to the thickness of the clamping portion 1222. The clamping groove 111 is located in the clamping portion 1222 and does not protrude from the end plate 11 in the second direction Y. The body 121, the enclosure 1221 and the clamping part 1222 are an integrated structure, and the body 121, the enclosure 1221 and the clamping part 1222 are all plate-like structures. The body 121 and the enclosure 1221 are arranged perpendicularly and connected by an arc transition. The enclosure 1221 and the clamping part 1222 are arranged perpendicularly and connected by an arc transition. The end plate 11 is provided with a recess 112, which is formed by a surface depression of the end plate 11 away from the accommodating cavity 13. The recess 112 is arranged to penetrate the two end surfaces of the end plate 11 in the second direction Y, and penetrate the end surface of the end plate 11 toward the side of the side plate 12 in the third direction Z. The enclosure 1221 of the side plate 12 extends into the recess 112, and the side plate 12 is provided with a connecting seat 123, which is arranged to protrude from the side plate 12 away from the accommodating cavity 13.

[0110] It is understandable that the above-mentioned structure of the card slot 111 and the card connection part 1222 is only an optional embodiment. In some embodiments, the end plate and the side plate can also be provided with a card connection part protruding along the second direction, and the card connection part 1222 includes a cylindrical or polygonal column. The other is provided with a card slot 111, the card slot includes a circular card slot and a polygonal card slot, and the card connection part 1222 is carded into the card slot along the second direction, which can also avoid the disadvantages caused by welding and ensure the yield and reliability of the battery box 10.

[0111] In a second aspect, a battery 100 according to an embodiment of the present application includes the battery case 10 and a battery cell 20 as described above. The battery cell 20 is located in the accommodating cavity 13 .

[0112] The battery 100 provided in one embodiment of the present application, by including the battery 100 cells provided in the above-mentioned embodiments, can not only prevent liquid or other foreign matter from affecting the charging or discharging of the battery 100 cells, but also ensure the connection between the adjacent side plates 12 and the end plates 11 without the need for welding or the like, thereby improving the yield of the battery 100 during the production process and further improving the reliability of the battery 100.

[0113] According to some embodiments of the present application, the present application further provides an electrical device, comprising the battery 100 described in any of the above schemes, and the battery 100 is used to provide electrical energy to the electrical device.

[0114] The power-consuming device may be any of the aforementioned devices or systems using the battery 100 .

[0115] 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 box, characterized in that: include: at least two end plates; At least two side panels, the side panels and the end panels are alternately arranged and enclosed to form a receiving cavity; Among them, one of the adjacent end plate and the side plate is provided with a card slot, and the other is provided with a card connection portion matching the card slot, and the card connection portion is fixed to the card slot to fix the relative position of the adjacent side plate and the end plate.

2. The battery box according to claim 1, characterized in that: The side plate includes a main body and a transition body arranged on both sides of the main body in a first direction, the transition body is arranged to intersect with the main body, the transition body at least partially abuts against the outer wall surface of the end plate away from the accommodating cavity, and the side plate is clamped and fixed to the end plate through the transition body.

3. The battery box according to claim 2, characterized in that: The adapter body includes an enclosing portion and the clamping portion arranged at at least one end of the enclosing portion in the second direction, the end plate is provided with the clamping slot at at least one end in the second direction, the clamping portion extends into the clamping slot and is clamped and fixed with the clamping slot, and the second direction intersects with the first direction.

4. The battery box according to claim 3, characterized in that: The end plate is provided with the clamping grooves on both sides of the second direction respectively, and the enclosing portion is provided with the clamping parts at both ends of the second direction respectively, and the clamping grooves and the clamping parts are provided one to one and are clamped and fixed.

5. The battery box according to claim 4, characterized in that: The card slot is recessed into the card slot by the end surface of the end plate in the second direction, and the card slot penetrates the outer wall surface of the end plate away from the accommodating cavity.

6. The battery case according to claim 4, characterized in that: Along the second direction, the depth of the clamping groove is greater than or equal to the thickness of the clamping portion.

7. The battery box according to claim 3, characterized in that: The main body, the enclosing portion and the clamping portion are an integrated structure.

8. The battery box according to claim 3, characterized in that: The main body, the enclosure and the clamping portion are all plate-like structures. The main body and the enclosure are intersected and connected with an arcuate transition. The enclosure and the clamping portion are intersected and connected with an arcuate transition.

9. The battery case according to any one of claims 1 to 8, characterized in that: The end plate is provided with a recessed portion, which is formed by a depression of the surface of the end plate facing away from the accommodating cavity, and the side plate partially extends into the recessed portion.

10. The battery case according to any one of claims 1 to 8, characterized in that: The side plate is provided with a connection seat, and the connection seat protrudes out of the side plate toward a side away from the accommodating cavity.

11. A battery, characterized in that: include: The battery box according to any one of claims 1 to 10; The battery cell is arranged in the accommodating cavity.

12. An electrical device, characterized in that: Comprising the battery of claim 11.

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