Battery and electric device

Abstract

The embodiment of the utility model provides a battery and a power utilization device, the battery comprises a cover body, a seat body, at least one battery monomer and a sealing piece, and at least part of the outer edge of the cover body is provided with a first connecting part; the seat body and the cover body define a containing space, at least part of the outer edge of the seat body is provided with a second connecting part, and the second connecting part is connected to the first connecting part; the sealing element is clamped between the first connecting part and the second connecting part, the sealing element comprises a body part and two connected first elastic parts, the body part is provided with a first end close to the battery monomer and a second end away from the battery monomer, and the connecting part of the two first elastic parts is connected to the first end or the second end; the sealing element has a free state and an assembly state, and in the free state, the two first elastic parts extend from the body part to the first connecting part and the second connecting part respectively; in an assembling state, the two first elastic parts are compressed by the first connecting part and the second connecting part and generate elastic deformation. The sealing effect of the battery can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more specifically, to a battery and an electrical device. Background Art

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] In the development of battery technology, how to improve the sealing effect of batteries is a research direction in battery technology. Utility Model Content

[0004] The present application provides a battery and an electrical device, which can improve the sealing effect of the battery.

[0005] An embodiment of the present application provides a battery, including a cover body, at least one battery cell, a seat body and a sealing member, wherein at least part of the outer edge of the cover body is provided with a first connecting portion; the seat body and the cover body are arranged to form an accommodating space for accommodating at least one battery cell, at least part of the outer edge of the seat body is provided with a second connecting portion, and the second connecting portion is connected to the first connecting portion; the sealing member is clamped between the first connecting portion and the second connecting portion, and the sealing member includes a main body portion and two connected first elastic portions, the main body portion has a first end close to the battery cell and a second end away from the battery cell, and the connecting parts of the two first elastic portions are connected to the first end or the second end; the sealing member has a free state and an assembled state, in the free state, the two first elastic portions extend from the main body portion toward the first connecting portion and the second connecting portion respectively; in the assembled state, the two first elastic portions are compressed by the first connecting portion and the second connecting portion and produce elastic deformation.

[0006] In the above technical scheme, the seal of the embodiment of the present application is provided with two first elastic parts extending toward the cover body and the seat body respectively in a free state, and the two first elastic parts can be compressed by the first connecting part and the second connecting part in the assembled state to produce elastic deformation. In this way, the elastic deformation produced by the compression of the two first elastic parts can absorb the manufacturing tolerances of the first connecting part, the second connecting part and the seal itself, thereby improving the sealing effect of the battery.

[0007] In some embodiments, in a free state, one of the first elastic portions extends toward the first connection portion along a first direction, and another first elastic portion extends toward the second connection portion along the first direction, and the first direction is parallel to an arrangement direction from the first connection portion to the second connection portion.

[0008] In the above technical solution, the two first elastic parts are extended along the first direction toward the first connecting part and the second connecting part respectively, so that the two first elastic parts can be directly compressed along the first direction. This arrangement can make the seal have a better sealing effect.

[0009] In some embodiments, in a free state, the two first elastic parts are connected at an angle, and in an assembled state, the two first elastic parts produce elastic deformation to move closer to each other.

[0010] In the above technical solution, the two first elastic parts absorb the manufacturing tolerance by elastic deformation when they are close to each other, and have a good sealing effect. Moreover, during the continuous compression process, the pressing area of ​​the two first elastic parts and the first connecting part and the second connecting part gradually increases, that is, the deformation of the first elastic part is large, so it has a good sealing effect.

[0011] In some embodiments, the seal also includes two connected second elastic parts, the connecting parts of the two first elastic parts are connected to the first end, and the connecting parts of the two second elastic parts are connected to the second end, and in a free state, the two second elastic parts extend from the main body toward the first connecting part and the second connecting part respectively; in an assembled state, the two second elastic parts are compressed by the first connecting part and the second connecting part and produce elastic deformation.

[0012] In the above technical solution, the elastic deformation generated by the two second elastic parts through compression can further absorb the manufacturing tolerances of the first connecting part, the second connecting part and the seal itself, thereby further improving the sealing effect of the battery. In addition, the two second elastic parts are connected to the second end, and can form support for the opposite ends of the main body together with the two first elastic parts, thereby improving the structural stability of the seal.

[0013] In some embodiments, in a free state, one of the second elastic portions extends toward the first connection portion along a first direction, and another second elastic portion extends toward the second connection portion along the first direction, and the first direction is parallel to an arrangement direction from the first connection portion to the second connection portion.

[0014] In the above technical solution, the two second elastic parts are extended along the first direction toward the first connecting part and the second connecting part respectively, so that the two second elastic parts can be directly compressed along the first direction. This arrangement can make the seal have a better sealing effect.

[0015] In some embodiments, in a free state, the two second elastic parts are connected at an angle; in an assembled state, the two second elastic parts produce elastic deformation to move closer to each other.

[0016] In the above technical solution, the two second elastic parts absorb the manufacturing tolerance by elastic deformation when they are close to each other, and have a good sealing effect. Moreover, during the continuous compression process, the pressing area of ​​the two second elastic parts and the first connecting part and the second connecting part gradually increases, that is, the deformation of the second elastic parts is large, so it has a good sealing effect.

[0017] In some embodiments, in a free state, the two first elastic parts are connected at an angle, and in an assembled state, the two first elastic parts produce elastic deformation to move closer to each other.

[0018] In the above technical solution, the two first elastic parts and the two second elastic parts all produce elastic deformation to move closer to each other. In this way, the deformation amounts of the two first elastic parts and the two second elastic parts are both large, thereby improving the sealing effect of the seal.

[0019] In some embodiments, the two first elastic portions form a first opening facing toward or away from the battery cell, and the two second elastic portions form a second opening facing toward or away from the battery cell, and the first opening and the second opening have the same orientation.

[0020] In the above technical solution, by setting the first opening and the second opening to have the same orientation, the dimension occupied by the sealing member along the arrangement direction from the first connecting portion to the second connecting portion can be reduced.

[0021] In some embodiments, both the first opening and the second opening face the battery cell.

[0022] In the above technical solution, the volume of impurities such as dust entering the second opening can be reduced, thereby reducing the corrosion of the impurities to the sealing component and increasing the service life of the sealing component.

[0023] In some embodiments, the two first elastic parts form a first opening facing toward or away from the battery cell, and the two second elastic parts form a second opening facing toward or away from the battery cell. The first opening and the second opening are in opposite directions.

[0024] In the above technical solution, the deformation states of the two first elastic parts and the two second elastic parts can be consistent after being compressed, so that the sealing effects at both ends of the main body are consistent, thereby improving the sealing effect of the seal.

[0025] In some embodiments, the first opening faces toward the battery cell, and the second opening faces away from the battery cell.

[0026] In the above technical solution, the two first elastic parts can directly fit each other in the extreme state after being compressed, and have a large deformation amount. Similarly, the two second elastic parts can also directly fit each other in the extreme state after being compressed. Therefore, the two first elastic parts and the two second elastic parts can have large deformation amounts, thereby having a good sealing effect.

[0027] In some embodiments, the two first elastic portions are arranged as mirror images of each other, and / or the two second elastic portions are arranged as mirror images of each other.

[0028] In the above technical solution, the two first elastic parts are arranged in mirror images to make the sealing performance brought by the two first elastic parts almost the same, thereby improving the sealing performance of the seal. The two second elastic parts are arranged in mirror images to make the sealing performance brought by the two second elastic parts almost the same, thereby improving the sealing performance of the seal.

[0029] In some embodiments, the two first elastic parts are arranged in mirror image, the two second elastic parts are arranged in mirror image, the two first elastic parts form a first elastic structure, the two second elastic parts form a second elastic structure, and the first elastic structure and the second elastic structure are arranged in mirror image.

[0030] In the above technical solution, the sealing effects at both ends of the main body can be made almost the same, thereby improving the sealing effect of the seal.

[0031] In some embodiments, the battery further includes a fastener, the sealing member is provided with a first connecting hole, the fastener passes through the first connecting hole, the first connecting portion, and the second connecting portion, and connects the three.

[0032] In the above technical solution, the fastener can be used to limit the seal, thereby reducing the displacement of the seal during use and improving the sealing effect of the seal. In addition, the compression amount of the seal can be adjusted by the fastener to achieve the sealing effect required in different situations.

[0033] In some embodiments, the first connecting portion, the second connecting portion and the sealing member are all arranged around the accommodating space.

[0034] In the above technical solution, the first connecting part, the second connecting part and the seal are arranged around the accommodating space, so that the seals on all four sides of the accommodating space can form a good sealing effect, greatly reducing the probability of dust and other impurities entering the accommodating space and affecting the battery cells.

[0035] In some embodiments, the seal is formed into an annular structure in an integrally formed manner.

[0036] In the above technical solution, a good sealing effect can be formed around the battery cell, further reducing the probability of dust and other impurities entering the storage space. At the same time, the locking interface can be kept almost consistent, reducing the difference in sealing effect at different positions of the seal.

[0037] In a second aspect, an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery, and the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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 the drawings without paying creative work.

[0039] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0040] Figure 2 A schematic diagram of the exploded structure of a battery provided in some embodiments of the present application;

[0041] Figure 3 A schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0042] Figure 4 for Figure 3 Schematic diagram of the structure of the middle seal;

[0043] Figure 5 for Figure 4 A cross-sectional view of the seal shown;

[0044] Figure 6 Another cross-sectional view of a seal of a battery provided in some embodiments of the present application;

[0045] Figure 7 Still another cross-sectional view of a seal of a battery provided in some embodiments of the present application.

[0046] The reference numerals of the specific embodiments are as follows:

[0047] 1. Vehicle; 2. Battery; 3. Controller; 4. Motor; 5. Battery cell;

[0048] 6. Cover body; 61. First connecting portion;

[0049] 7. seat body; 71. second connecting portion;

[0050] 8. sealing member; 81. main body; 811. first end; 812. second end; 813. first connecting hole; 82. first elastic part; 83. second elastic part; 84. first opening; 85. second opening;

[0051] 9. Fasteners;

[0052] X, first direction. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0055] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0058] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0059] The term "plurality" used in the present application refers to two or more (including two).

[0060] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-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 may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0061] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0062] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. A battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The positive current collector includes a positive coating area and a positive electrode ear connected to the positive coating area. The positive coating area is coated with a positive active material layer, and the positive electrode ear is not coated with a positive active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes a positive active material. The positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, and the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0063] The battery usually includes a cover, a base and a battery cell. The cover and the base are connected to form a storage space for accommodating the battery cell, thereby protecting the battery cell. In order to reduce the impact of dust and other impurities entering the storage space on the battery cell, a sealing gasket is usually sandwiched at the connection between the cover and the base to improve the sealing performance between the cover and the base, thereby protecting the battery cell.

[0064] The sealing gasket is generally a strip-shaped structure, and its surface facing the cover body and the base body is a plane, and the surface of the cover body and the base body facing the sealing gasket is also a plane. Taking the base body as an example, due to the existence of manufacturing tolerances, the surface of the base body facing the sealing gasket may appear high at one end and low at the other end. After the sealing gasket is assembled, the higher end will have a better sealing effect, and the lower end will have a poorer sealing effect. In addition, the sealing gasket itself also has a manufacturing tolerance. The existence of manufacturing tolerances will also make the sealing effect of different positions of the sealing gasket different, which may further reduce the sealing effect of the lower part of the above-mentioned base body.

[0065] In view of this, the present application provides a battery, whose seal is provided with two first elastic parts extending toward the cover body and the base body respectively in a free state, and the two first elastic parts can be compressed by the first connecting part and the second connecting part in the assembled state to produce elastic deformation. In this way, the elastic deformation produced by the compression of the two first elastic parts can absorb the interface tolerance and improve the sealing effect of the battery.

[0066] The battery described in the embodiments of the present application is suitable for use in electrical devices using the battery.

[0067] 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.

[0068] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0069] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0070] like Figure 1 As shown, a battery 2 is disposed inside the vehicle 1, and the battery 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery 2 may be used to power the vehicle 1, for example, the battery 2 may be used as an operating power source for the vehicle 1.

[0071] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1 .

[0072] In some embodiments of the present application, the battery 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0073] Figure 2 A schematic diagram of the exploded structure of a battery provided in some embodiments of the present application; Figure 3 A schematic diagram of a partial structure of a battery provided in some embodiments of the present application; Figure 4 for Figure 3 Schematic diagram of the structure of the middle seal; Figure 5 for Figure 4 A cross-sectional view of a seal is shown.

[0074] like Figure 2-Figure 5As shown, the battery 2 includes a cover body 6, a seat body 7, at least one battery cell 5 and a sealing member 8. At least part of the outer edge of the cover body 6 is provided with a first connecting portion 61. The seat body 7 and the cover body 6 are surrounded to form an accommodating space for accommodating at least one battery cell 5. At least part of the outer edge of the seat body 7 is provided with a second connecting portion 71, and the second connecting portion 71 is connected to the first connecting portion 61; the sealing member 8 is sandwiched between the first connecting portion 61 and the second connecting portion 71. The sealing member 8 includes a main body 81 and two connected first elastic portions 82. The main body 81 has a first end 811 close to the battery cell 5 and a second end 812 away from the battery cell 5. The connecting parts of the two first elastic portions 82 are connected to the first end 811 or the second end 812; the sealing member 8 has a free state and an assembled state. In the free state, the two first elastic portions 82 extend from the main body 81 toward the first connecting portion 61 and the second connecting portion 71 respectively; in the assembled state, the two first elastic portions 82 are compressed by the first connecting portion 61 and the second connecting portion 71 and produce elastic deformation.

[0075] In the battery 2, the battery cell 5 can be one or more. If there are more than one battery cell 5, the battery cells 5 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 5 are both connected in series and in parallel. The battery cells 5 can be directly connected in series, in parallel or in mixed connection, and then the whole body formed by the battery cells 5 is fixed to the cover 6 or the base 7; of course, the battery cells 5 can also be connected in series, in parallel or in mixed connection to form a battery module, and then the battery modules are connected in series, in parallel or in mixed connection to form a whole body, and then fixed to the cover 6 or the base 7.

[0076] The first connection portion 61 of the embodiment of the present application can be formed on a part of the outer circumference of the cover body 6, or on the entire outer circumference of the cover body 6. Similarly, the second connection portion 71 can be formed on a part of the outer circumference of the seat body 7, or on the entire outer circumference of the seat body 7. Similarly, the sealing member 8 can be provided on a part of the outer circumference of the seat body 7, or on the entire outer circumference of the seat body 7.

[0077] Exemplarily, the surfaces of the first connecting portion 61 and the second connecting portion 71 facing the sealing member 8 are both planes.

[0078] The first connection portion 61 of the embodiment of the present application may be a flange structure of the side wall of the cover body 6 , and the second connection portion 71 may be a flange structure of the side wall of the base body 7 , or may be a side beam structure of the base body 7 .

[0079] The first connection portion 61 and the second connection portion 71 of the embodiment of the present application may be connected by threaded connection, riveting, or the like.

[0080] The body 81 of the sealing member 8 of the embodiment of the present application is also sandwiched between the first connecting portion 61 and the second connecting portion 71. The body 81 may be a strip-shaped structure, and the extending direction of the strip-shaped structure is parallel to the extending direction of the first connecting portion 61 and the second connecting portion 71. The body 81 may also be a block-shaped structure.

[0081] The sealing member 8 of the embodiment of the present application has a free state and an assembled state. The free state is the state of the sealing member 8 before being compressed, for example Figure 3 The state in which the seal 8 is placed between the first connection part 61 and the second connection part 71 but not compressed. The assembled state is the state in which the seal 8 is compressed.

[0082] In the free state, the two first elastic parts 82 extend toward the first connection part 61 and the second connection part 71 respectively, which means that one of the first elastic parts 82 extends toward the first connection part 61, and the other first elastic part 82 extends toward the second connection part 71. It should be noted that one of the first elastic parts 82 extends toward the first connection part 61, and the first elastic part 82 can extend along Figure 3 The first elastic portion 82 may extend directly toward the first connection portion 61 in the vertical direction, or may extend in an inclined manner toward the first connection portion 61. Similarly, another first elastic portion 82 extends toward the second connection portion 71, and the first elastic portion 82 may extend directly toward the second connection portion 71 in the vertical direction, or may extend in an inclined manner toward the second connection portion 71.

[0083] The two first elastic portions 82 in the embodiment of the present application may be connected at an angle or may not form an angle.

[0084] In the assembled state, one first elastic portion 82 may generate elastic deformation in a direction close to the main body portion 81 , and the other first elastic portion 82 may generate elastic deformation in a direction away from the main body portion 81 , that is, the two first elastic portions 82 are not close to each other.

[0085] The shapes of the two first elastic parts 82 in the embodiment of the present application may be the same or different.

[0086] The first elastic portion 82 and the main body portion 81 of the embodiment of the present application can be connected by bonding or integrally forming.

[0087] The sealing member 8 in the embodiment of the present application may be made of foam or rubber.

[0088] The seal 8 of the embodiment of the present application is provided with two first elastic portions 82 extending toward the cover body 6 and the seat body 7 respectively in a free state. The two first elastic portions 82 can be compressed by the first connecting portion 61 and the second connecting portion 71 in the assembled state to generate elastic deformation. In this way, the two first elastic portions 82 present different changes for positions of the first connecting portion 61 and the second connecting portion 71 with different planarities, that is, the elastic deformation generated by the compression of the two first elastic portions 82 can absorb the manufacturing tolerances of the first connecting portion 61, the second connecting portion 71 and the seal 8 itself, thereby improving the sealing effect of the battery 2.

[0089] Figure 6 Another cross-sectional view of a seal of a battery provided in some embodiments of the present application.

[0090] See also Figure 6 In some embodiments, in a free state, one of the first elastic portions 82 extends along a first direction X toward the first connection portion 61 , and the other first elastic portion 82 extends along the first direction X toward the second connection portion 71 , and the first direction X is parallel to the arrangement direction of the first connection portion 61 to the second connection portion 71 .

[0091] In the embodiment of the present application, no angle is formed between the two first elastic portions 82 , but a substantially straight structure is formed.

[0092] The two first elastic parts 82 are respectively extended toward the first connecting part 61 and the second connecting part 71 along the first direction X, so that the two first elastic parts 82 can be directly compressed along the first direction X. This arrangement can make the sealing member 8 have a better sealing effect.

[0093] Please continue reading Figure 3-Figure 5 In some embodiments, in a free state, the two first elastic portions 82 are connected at an angle, and in an assembled state, the two first elastic portions 82 produce elastic deformation to move closer to each other.

[0094] The two first elastic portions 82 in the embodiment of the present application may form an acute angle, an obtuse angle or a right angle therebetween.

[0095] The two first elastic parts 82 produce elastic deformation to move closer to each other, that is, after the two first elastic parts 82 are compressed, the two move closer to each other. After being compressed, the two first elastic parts 82 can be directly attached to each other, or they can respectively abut against the opposite sides of the main body 81 in the first direction X.

[0096] The two first elastic parts 82 are set to be connected at an angle and move closer to each other after compression. In this way, the two first elastic parts 82 absorb the manufacturing tolerance through elastic deformation when moving closer to each other, and have a good sealing effect. Moreover, during the continuous compression process, the pressing area of ​​the two first elastic parts 82 and the first connecting part 61 and the second connecting part 71 gradually increases, that is, the deformation of the first elastic part 82 is large, so it has a better sealing effect.

[0097] In some embodiments, the seal 8 also includes two connected second elastic portions 83, the connecting parts of the two first elastic portions 82 are connected to the first end 811, and the connecting parts of the two second elastic portions 83 are connected to the second end 812, and in a free state, the two second elastic portions 83 extend from the main body portion 81 toward the first connecting portion 61 and the second connecting portion 71 respectively; in an assembled state, the two second elastic portions 83 are compressed by the first connecting portion 61 and the second connecting portion 71 and produce elastic deformation.

[0098] In the free state, the two second elastic parts 83 extend toward the first connection part 61 and the second connection part 71 respectively, which means that one of the second elastic parts 83 extends toward the first connection part 61, and the other second elastic part 83 extends toward the second connection part 71. It should be noted that one of the second elastic parts 83 extends toward the first connection part 61, and the second elastic part 83 can extend directly toward the first connection part 61 in the vertical direction, or extend toward the first connection part 61 in an inclined form. Similarly, the other second elastic part 83 extends toward the second connection part 71, and the second elastic part 83 can extend directly toward the second connection part 71 in the vertical direction, or extend toward the second connection part 71 in an inclined form.

[0099] The two second elastic portions 83 of the embodiment of the present application may be connected at an angle, or may not form an angle and present a straight structure.

[0100] In the assembled state, one second elastic portion 83 may generate elastic deformation toward the direction approaching the main body portion 81 , and the other second elastic portion 83 may generate elastic deformation toward the direction away from the main body portion 81 , that is, the two second elastic portions 83 are not close to each other.

[0101] The shapes of the two second elastic parts 83 in the embodiment of the present application may be the same or different.

[0102] The second elastic portion 83 and the main body portion 81 of the embodiment of the present application can be connected by bonding or integrally forming.

[0103] Two second elastic parts 83 are provided, and the two second elastic parts 83 can be compressed by the first connection part 61 and the second connection part 71 in the assembled state to generate elastic deformation. In this way, the two second elastic parts 83 present different changes for the positions of the first connection part 61 and the second connection part 71 with different flatness, that is, the elastic deformation generated by the two second elastic parts 83 through compression can further absorb the manufacturing tolerances of the first connection part 61, the second connection part 71 and the sealing member 8 itself, thereby further improving the sealing effect of the battery 2. In addition, the two second elastic parts 83 are connected to the second end 812, and can form support for the opposite ends of the main body part 81 together with the two first elastic parts 82, thereby improving the structural stability of the sealing member 8.

[0104] See also Figure 6 In some embodiments, in a free state, one of the second elastic portions 83 extends along the first direction X toward the first connection portion 61 , and the other second elastic portion 83 extends along the first direction X toward the second connection portion 71 , and the first direction X is parallel to the arrangement direction of the first connection portion 61 to the second connection portion 71 .

[0105] In the embodiment of the present application, no angle is formed between the two second elastic portions 83 , but a substantially straight structure is formed.

[0106] The two second elastic parts 83 are respectively extended toward the first connecting part 61 and the second connecting part 71 along the first direction X, so that the two second elastic parts 83 can be directly compressed along the first direction X. This arrangement can make the sealing member 8 have a better sealing effect.

[0107] Please continue reading Figure 3-Figure 5 In some embodiments, in a free state, the two second elastic portions 83 are connected at an angle; in an assembled state, the two second elastic portions 83 produce elastic deformation to move closer to each other.

[0108] The two second elastic portions 83 in the embodiment of the present application may form an acute angle, an obtuse angle or a right angle therebetween.

[0109] The two second elastic parts 83 produce elastic deformation to move closer to each other, that is, after the two second elastic parts 83 are compressed, they move closer to each other. After being compressed, the two second elastic parts 83 can be directly attached to each other, or they can respectively abut against the opposite sides of the main body 81 in the first direction X.

[0110] The two second elastic parts 83 are set to be connected at an angle and move closer to each other after compression. In this way, the two second elastic parts 83 absorb the manufacturing tolerance through elastic deformation when moving closer to each other, and have a good sealing effect. Moreover, during the continuous compression process, the pressing area of ​​the two second elastic parts 83 and the first connecting part 61 and the second connecting part 71 gradually increases, that is, the deformation of the second elastic part 83 is large, so it has a good sealing effect.

[0111] In some embodiments, in a free state, the two first elastic portions 82 are connected at an angle, and in an assembled state, the two first elastic portions 82 produce elastic deformation to move closer to each other.

[0112] The two first elastic parts 82 and the two second elastic parts 83 all generate elastic deformation to move closer to each other. In this way, the deformation amounts of the two first elastic parts 82 and the two second elastic parts 83 are both large, thereby improving the sealing effect of the sealing member 8 .

[0113] Figure 7 Still another cross-sectional view of a seal of a battery provided in some embodiments of the present application.

[0114] See also Figure 7 In some embodiments, the two first elastic portions 82 form a first opening 84 facing toward or away from the battery cell 5 , and the two second elastic portions 83 form a second opening 85 facing toward or away from the battery cell 5 . The first opening 84 and the second opening 85 have the same orientation.

[0115] In the embodiment of the present application, both the first opening 84 and the second opening 85 face the battery cell 5 , or both the first opening 84 and the second opening 85 face away from the battery cell 5 .

[0116] By setting the first opening 84 and the second opening 85 to be in the same direction, the dimension occupied by the sealing member 8 along the arrangement direction from the first connecting portion 61 to the second connecting portion 71 can be reduced.

[0117] In some embodiments, both the first opening 84 and the second opening 85 face toward the battery cell 5 .

[0118] The first opening 84 and the second opening 85 are both arranged to face the battery cell 5 . In this way, the volume of impurities such as dust entering the second opening 85 can be reduced, thereby alleviating the corrosion of the impurities to the seal 8 and increasing the service life of the seal 8 .

[0119] Please continue reading Figure 5 In some embodiments, the two first elastic portions 82 form a first opening 84 facing toward or away from the battery cell 5 , and the two second elastic portions 83 form a second opening 85 facing toward or away from the battery cell 5 . The first opening 84 and the second opening 85 are oriented in opposite directions.

[0120] In the embodiment of the present application, the first opening 84 faces the battery cell 5, and the second opening 85 faces away from the battery cell 5; or, the first opening 84 faces away from the battery cell 5, and the second opening 85 faces the battery cell 5. In the compressed state, the two first elastic parts 82 can directly fit each other, and the two second elastic parts 83 can directly fit each other; or, the two first elastic parts 82 can press against the opposite sides of the main body 81, and the two second elastic parts 83 can press against the opposite sides of the main body 81.

[0121] The first opening 84 and the second opening 85 are arranged in opposite directions, so that the deformation states of the two first elastic parts 82 and the two second elastic parts 83 can be consistent after being compressed, so that the sealing effects at both ends of the main body part 81 are consistent, thereby improving the sealing effect of the seal 8.

[0122] In some embodiments, the first opening 84 faces the battery cell 5 , and the second opening 85 faces away from the battery cell 5 .

[0123] In this way, the two first elastic parts 82 can directly fit each other in the extreme state after being compressed, and have a larger deformation amount. Similarly, the two second elastic parts 83 can also directly fit each other in the extreme state after being compressed. Therefore, the possible deformation amounts of the two first elastic parts 82 and the two second elastic parts 83 are both large, thereby having a good sealing effect.

[0124] In some embodiments, the two first elastic portions 82 are arranged in mirror images of each other, and / or the two second elastic portions 83 are arranged in mirror images of each other.

[0125] The two first elastic parts 82 are arranged in mirror images of each other, so that the sealing performance brought by the two first elastic parts 82 is almost the same, thereby improving the sealing performance of the sealing element.

[0126] The two second elastic parts 83 are arranged in mirror images of each other, so that the sealing performance brought by the two second elastic parts 83 is almost the same, thereby improving the sealing performance of the sealing element.

[0127] In some embodiments, the two first elastic portions 82 are mirror-set, the two second elastic portions 83 are mirror-set, the two first elastic portions 82 form a first elastic structure, the two second elastic portions 83 form a second elastic structure, and the first elastic structure and the second elastic structure are mirror-set.

[0128] In this way, the sealing effects at both ends of the main body 81 can be almost the same, thereby improving the sealing effect of the seal.

[0129] In some embodiments, the battery 2 further includes a fastener 9 , the main body 81 is provided with a first connection hole 813 , and the fastener 9 passes through the first connection hole 813 , the first connection portion 61 , and the second connection portion 71 , and connects the three.

[0130] The number of the first connection holes 813 provided on the main body 81 of the embodiment of the present application can be one, two, or even more.

[0131] Optionally, the fastener 9 is a rivet nut. Of course, it can also be a bolt assembly.

[0132] The main body 81 is provided with a first connection hole 813, so that the fastener 9 passes through the first connection hole 813 to fix the seal 8 to the first connection part 61 and the second connection part 71. In this way, the fastener 9 can form a limiting effect on the seal 8, thereby reducing the displacement of the seal 8 during use and improving the sealing effect of the seal 8. In addition, the compression amount of the seal 8 can be adjusted by the tightening degree of the fastener 9 to achieve the sealing effect required in different situations.

[0133] In some embodiments, the first connection portion 61 , the second connection portion 71 and the sealing member 8 are all disposed around the accommodating space.

[0134] The first connection part 61 of the embodiment of the present application is arranged around the accommodation space. The first connection part 61 may be arranged to continuously surround the accommodation space, that is, the first connection part 61 is annular; or the first connection part 61 may include a multi-segment structure, and the multi-segment structure is abutted end to end to surround the accommodation space. The second connection part 71 and the sealing member 8 are also arranged in the same manner, and the present application will not repeat them here.

[0135] The first connection part 61 , the second connection part 71 and the seal 8 are arranged around the accommodation space, so that the seal 8 can form a good sealing effect around the accommodation space, thereby greatly reducing the probability of dust and other impurities entering the accommodation space and affecting the battery cell 5 .

[0136] In some embodiments, the seal 8 is formed into an annular structure in an integral manner.

[0137] When the sealing member 8 is made of rubber, the sealing member 8 can be manufactured by injection molding and vulcanization.

[0138] The seal 8 is integrally formed to form a ring structure, so that a good sealing effect can be formed around the battery cell 5, further reducing the probability of dust and other impurities entering the accommodation space. At the same time, the locking interface can be kept almost consistent, reducing the difference in sealing effect of different positions of the seal 8.

[0139] The embodiment of the present application also provides an electrical device, comprising the above-mentioned battery 2.

[0140] See also Figure 3-Figure 5 The embodiment of the present application provides a battery 2, which includes a cover body 6, a seat body 7, at least one battery cell 5 and a sealing member 8. A first connecting portion 61 is provided on at least part of the outer edge of the cover body 6. The seat body 7 and the cover body 6 are surrounded to form a storage space for accommodating at least one battery cell 5. A second connecting portion 71 is provided on at least part of the outer edge of the seat body 7. The second connecting portion 71 is connected to the first connecting portion 61. The sealing member 8 is sandwiched between the first connecting portion 61 and the second connecting portion 71. The sealing member 8 includes a main body 81 and two connected first elastic portions 82. The main body 81 has a first end 811 close to the battery cell 5 and a second end 812 away from the battery cell 5. The connecting parts of the two first elastic portions 82 are connected to the first end 811. The sealing member 8 has a free state and an assembled state. In the free state, the two first elastic portions 82 extend from the main body 81 toward the first connecting portion 61 and the second connecting portion 71 respectively. In the assembled state, the two first elastic portions 82 are compressed by the first connecting portion 61 and the second connecting portion 71 and produce elastic deformation. In the free state, the two first elastic parts 82 are connected at an angle, and in the assembled state, the two first elastic parts 82 produce elastic deformation to move closer to each other. The seal 8 also includes two connected second elastic parts 83, and the connection parts of the two second elastic parts 83 are connected to the second end 812. In the free state, the two second elastic parts 83 extend from the main body 81 toward the first connection part 61 and the second connection part 71 respectively; in the assembled state, the two second elastic parts 83 are compressed by the first connection part 61 and the second connection part 71 and produce elastic deformation. In the free state, the two second elastic parts 83 are connected at an angle; in the assembled state, the two second elastic parts 83 produce elastic deformation to move closer to each other. The two first elastic parts 82 form a first opening 84 toward the battery cell 5, and the two second elastic parts 83 form a second opening 85 away from the battery cell 5. The two first elastic parts 82 are mirror images of each other, and the two second elastic parts 83 are mirror images of each other. The two first elastic parts 82 form a first elastic structure, and the two second elastic parts 83 form a second elastic structure, and the first elastic structure and the second elastic structure are mirror images. The battery 2 further includes a fastener 9. The main body 81 is provided with a first connection hole 813. The fastener 9 passes through the first connection hole 813, the first connection part 61 and the second connection part 71, and connects the three. The first connection part 61, the second connection part 71 and the seal 8 are all arranged around the accommodation space. The seal 8 is formed into an annular structure in an integrated manner.

[0141] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0142] 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 it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: include: A cover body, wherein at least a portion of the outer edge of the cover body is provided with a first connecting portion; at least one battery cell; A seat body, wherein the seat body and the cover body are arranged to form a storage space for storing the at least one battery cell, and at least a portion of the outer edge of the seat body is provided with a second connection portion, and the second connection portion is connected to the first connection portion; a sealing member, sandwiched between the first connecting portion and the second connecting portion, the sealing member comprising a main body portion and two connected first elastic portions, the main body portion having a first end close to the battery cell and a second end away from the battery cell, and a connecting portion of the two first elastic portions connected to the first end or the second end; The seal has a free state and an assembled state. In the free state, the two first elastic parts extend from the main body toward the first connecting part and the second connecting part respectively; in the assembled state, the two first elastic parts are compressed by the first connecting part and the second connecting part and produce elastic deformation.

2. The battery according to claim 1, characterized in that In the free state, one of the first elastic parts extends toward the first connection part along a first direction, and another of the first elastic parts extends toward the second connection part along the first direction, and the first direction is parallel to an arrangement direction from the first connection part to the second connection part.

3. The battery according to claim 1, characterized in that In the free state, the two first elastic parts are connected at an angle, and in the assembled state, the two first elastic parts produce elastic deformation to move closer to each other.

4. The battery according to any one of claims 1 to 3, characterized in that: The sealing member further comprises two connected second elastic parts, wherein the connection parts of the two first elastic parts are connected to the first end, and the connection parts of the two second elastic parts are connected to the second end. In the free state, the two second elastic parts extend from the main body toward the first connecting part and the second connecting part respectively; in the assembled state, the two second elastic parts are compressed by the first connecting part and the second connecting part and generate elastic deformation.

5. The battery according to claim 4, characterized in that In the free state, one of the second elastic parts extends toward the first connection part along a first direction, and another of the second elastic parts extends toward the second connection part along the first direction, and the first direction is parallel to an arrangement direction from the first connection part to the second connection part.

6. The battery according to claim 4, characterized in that In the free state, the two second elastic parts are connected at an angle; in the assembled state, the two second elastic parts produce elastic deformation to move closer to each other.

7. The battery according to claim 6, characterized in that In the free state, the two first elastic parts are connected at an angle, and in the assembled state, the two first elastic parts produce elastic deformation to move closer to each other.

8. The battery according to claim 7, characterized in that The two first elastic parts form a first opening facing toward or away from the battery cell, and the two second elastic parts form a second opening facing toward or away from the battery cell. The first opening and the second opening have the same direction.

9. The battery according to claim 8, characterized in that The first opening and the second opening both face the battery cell.

10. The battery according to claim 7, characterized in that The two first elastic parts form a first opening facing toward or away from the battery cell, and the two second elastic parts form a second opening facing toward or away from the battery cell. The first opening and the second opening are in opposite directions.

11. The battery according to claim 10, characterized in that The first opening faces the battery cell, and the second opening faces away from the battery cell.

12. The battery according to claim 4, characterized in that The two first elastic parts are arranged in mirror image with each other, And / or, the two second elastic parts are arranged in mirror image with each other.

13. The battery according to claim 12, characterized in that The two first elastic parts are arranged in mirror image, and the two second elastic parts are arranged in mirror image, The two first elastic parts form a first elastic structure, the two second elastic parts form a second elastic structure, and the first elastic structure and the second elastic structure are arranged in a mirror image.

14. The battery according to any one of claims 1 to 3, characterized in that: The battery further includes a fastener, the sealing member is provided with a first connecting hole, the fastener passes through the first connecting hole, the first connecting portion and the second connecting portion, and connects the three.

15. The battery according to any one of claims 1 to 3, characterized in that: The first connecting portion, the second connecting portion and the sealing member are all arranged around the accommodating space.

16. The battery according to claim 15, characterized in that The sealing member is formed into an annular structure in an integral manner.

17. An electrical device, characterized in that: Comprising a battery as claimed in claim 16, the battery is used to provide electrical energy.

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