Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment, and belongs to the field of batteries. The battery includes: a case having an opening; the battery cell is arranged in the shell; the cover plate covers the opening to seal the opening; the first flow collecting disc is located in the shell and comprises a flow collecting disc body and a buffer part, the flow collecting disc body is provided with a mounting surface, the mounting surface faces the cover plate, and the buffer part comprises a first bent part connected with the flow collecting disc body and a supporting plate part connected with the first bent part; the supporting plate part is located on the side, where the mounting face is located, of the collector plate body, a first gap is formed between the supporting plate part and the collector plate body so that the buffer part can elastically deform, the supporting plate part is connected with the cover plate, and the side, back to the mounting face, of the collector plate body is electrically connected with the battery cell.

Description

Technical Field

[0001] This application belongs to the field of batteries, and particularly relates to a battery and an electrical device using the same. Background Art

[0002] With the development of technology, vehicles are increasingly widely used, and a battery can be installed in a vehicle to provide power for the vehicle. Generally, a battery has a housing, a battery cell, a current collector plate, and a cover plate. The battery cell and the current collector plate are located inside the housing. The housing has an opening, and the cover plate closes the opening and is welded to the current collector plate. In the related art, after the current collector plate and the battery cell are placed in the housing, due to the battery cell, there may be a tolerance between the current collector plate and the housing. When the cover plate is welded to the current collector plate, due to the existence of this tolerance, the cover plate may not be able to close the opening, or there may be a problem of poor welding between the cover plate and the current collector plate. Summary of the Utility Model

[0003] The purpose of the embodiments of this application is to provide a battery and an electrical device using the same, which can at least solve the problem that the cover plate may not be able to close the opening, or there may be a problem of poor welding between the cover plate and the current collector plate.

[0004] In a first aspect, the embodiments of this application provide a battery, which includes:

[0005] A housing having an opening;

[0006] A battery cell disposed inside the housing;

[0007] A cover plate closing the opening to seal the opening;

[0008] A first current collector plate located inside the housing, the first current collector plate including a current collector plate body and a buffer member. The current collector plate body has an installation surface facing the cover plate. The buffer member includes a first bending portion connected to the current collector plate body and a support plate portion connected to the first bending portion. The support plate portion is located on the side where the installation surface of the current collector plate body is located. There is a first gap between the support plate portion and the current collector plate body so that the buffer member can be elastically deformed. The support plate portion is connected to the cover plate, and the side of the current collector plate body facing away from the installation surface is electrically connected to the battery cell.

[0009] Optionally, the support plate portion includes a first support plate. One end of the first support plate is connected to the first bending portion, and the other end extends toward the center side of the current collector plate body. The side of the first support plate facing the cover plate is connected to the cover plate.

[0010] Optionally, the support plate portion further includes at least one second bending portion and at least one second support plate.

[0011] When the second bent portion is provided with one and the second support plate is provided with one, the second bent portion is connected to one end of the first support plate away from the first bent portion, the second support plate is connected to one end of the second bent portion away from the first support plate and extends toward the side away from the center of the current collector plate body, and the second support plate is welded to the cover plate;

[0012] When the second bent portion is provided with two or more and the second support plate is provided with two or more, one of the second bent portions is connected to one end of the first support plate away from the first bent portion, and one of the second support plates is connected to one end of the second bent portion away from the first support plate and extends toward the side away from the center of the current collector plate body; the remaining second bent portions are connected to any two adjacent second support plates, and the extending directions of any two adjacent second support plates are opposite. In the height direction of the housing, the second support plate farthest from the current collector plate body is welded to the cover plate.

[0013] Optionally, the housing has a height direction, and the orthographic projections of the first support plate and the second support plate on the projection plane perpendicular to the height direction at least partially overlap.

[0014] Optionally, the buffer member is disposed on the outer peripheral side of the current collector plate body and extends along the circumferential direction of the current collector plate body.

[0015] Optionally, the buffer member includes a plurality of sub-buffer members spaced apart along the circumferential direction of the current collector plate body, and there is a second gap between two adjacent sub-buffer members.

[0016] Optionally, the second gap extends to the current collector plate body.

[0017] Optionally, the cover plate includes a body portion and a protruding portion. The protruding portion is connected to the body portion and protrudes toward the side of the battery cell on the surface of the body portion, and the support plate portion is connected to the protruding portion.

[0018] Optionally, the battery further includes a support member. The support member is located between the current collector plate body and the cover plate, and the support member abuts against the current collector plate body and the cover plate respectively.

[0019] In a second aspect, an embodiment of the present application provides an electrical device, and the electrical device includes the battery according to any one of the first aspects described above.

[0020] In the embodiment of the present application, since the housing has an opening, the battery cell can be disposed in the housing through the opening, and a cover plate can be covered on the opening to close the opening. Since the first current collector plate is located in the housing, and the current collector plate body is connected to the first bent portion and the support plate portion connected to the first bent portion, and there is a first gap between the support plate portion and the current collector plate body, the support plate portion can move relative to the current collector plate body, that is, the support plate portion can approach or move away from the current collector plate body, causing the buffer member to elastically deform. Thus, when the cover plate is covered on the opening, the cover plate can be connected to the support plate portion, which is equivalent to connecting the cover plate to the buffer member. In the axial direction of the housing, the cover plate can cover the opening, and the buffer member can elastically deform. Therefore, the elastic deformation of the buffer member can absorb the tolerance between the current collector plate body and the housing, ensuring that the cover plate can cover the opening and the buffer member can elastically deform, and also avoiding the problem of poor soldering between the cover plate and the first current collector plate. That is, in the embodiment of the present application, by providing a buffer member on the current collector plate body, when the cover plate is covered on the opening of the housing, the cover plate is connected to the support plate portion, and the first gap between the support plate portion and the current collector plate body can ensure that the support plate portion moves relative to the current collector plate body, which is equivalent to making the buffer member elastically deformable relative to the current collector plate body. The buffer member can absorb the tolerance between the current collector plate body and the housing, ensuring that the cover plate can cover the opening and avoiding the problem of poor soldering between the first current collector plate and the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a battery provided by an embodiment of the present application;

[0022] Figure 2 Exploded view of a battery provided by an embodiment of the present application;

[0023] Figure 3 Cross-sectional view of a battery provided by an embodiment of the present application;

[0024] Figure 4 Indicates Figure 3 Enlarged view of portion A in

[0025] Figure 5 Schematic diagram of a first current collector plate provided by an embodiment of the present application;

[0026] Figure 6 Cross-sectional view of a first current collector plate provided by an embodiment of the present application;

[0027] Figure 7 Indicates Figure 6 Enlarged view of portion B in

[0028] Figure 8 Cross-sectional view of a first current collector plate provided by an embodiment of the present application;

[0029] Figure 9 Indicates Figure 8 An enlarged view at position C in;

[0030] Figure 10 Indicates the second schematic diagram of a first current collector plate provided by an embodiment of the present application;

[0031] Figure 11 Indicates the schematic diagram of a support member provided by an embodiment of the present application.

[0032] Reference numerals:

[0033] 001: First gap; 002: Second gap; 10: Housing; 101: Opening; 20: First current collector plate; 21: Current collector plate body; 22: Buffer member; 211: Mounting surface; 221: Bracing plate portion; 222: First bracing plate; 223: Second bracing plate; 2111: First bending portion; 2112: Second bending portion; 2101: Central hole; 2102: Positioning hole; 30: Cover plate; 301: Body portion; 302: Protrusion portion; 40: Support member; 41: First through hole; 42: Second through hole; 50: Electric core; 60: Second current collector plate; 70: Terminal assembly. Detailed implementation manners

[0034] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0036] In the description of the present application, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] As Figures 1 to 11 shown, the battery includes: a housing 10 having an opening 101; a battery cell 50 disposed within the housing 10; a cover plate 30 covering the opening 101 to close the opening 101; a first current collector plate 20 located within the housing 10, the first current collector plate 20 including a current collector plate body 21 and a buffer member 22, the current collector plate body 21 having a mounting surface 211 facing the cover plate 30, the buffer member 22 including a first bent portion 2111 connected to the current collector plate body 21 and a support plate portion 221 connected to the first bent portion 2111, the support plate portion 221 being located on the side where the mounting surface 211 of the current collector plate body 21 is located, a first gap 001 being provided between the support plate portion 221 and the current collector plate body 21 such that the buffer member 22 can be elastically deformed, the support plate portion 221 being connected to the cover plate 30, and the side of the current collector plate body 21 facing away from the mounting surface 211 being electrically connected to the battery cell 50.

[0038] In the embodiment of the present application, since the housing 10 has an opening 101, the battery cell 50 can be disposed in the housing 10 through the opening 101, and the cover plate 30 can be covered on the opening 101 to close the opening 101. Since the first current collector plate 20 is located in the housing 10, and the current collector plate body 21 is connected to the first bent portion 2111 and the support plate portion 221 connected to the first bent portion 2111, and there is a first gap 001 between the support plate portion 221 and the current collector plate body 21, the support plate portion 221 can move relative to the current collector plate body 21, that is, the support plate portion 221 can approach or move away from the current collector plate body 21, causing the buffer member 22 to elastically deform. Thus, when the cover plate 30 is covered on the opening 101, the cover plate 30 can be connected to the support plate portion 221, which is equivalent to connecting the cover plate 30 to the buffer member 22. In the axial direction of the housing 10, the cover plate 30 can cover the opening 101, and the buffer member 22 can elastically deform. Therefore, the elastic deformation of the buffer member 22 can absorb the tolerance between the current collector plate body 21 and the housing 10, ensuring that the cover plate 30 can cover the opening 101, and the buffer member 22 can elastically deform, and also avoiding the problem of virtual soldering between the cover plate 30 and the first current collector plate 20. That is, in the embodiment of the present application, by providing the buffer member 22 on the current collector plate body 21, when the cover plate 30 is covered on the opening 101 of the housing 10, the cover plate 30 is connected to the support plate portion 221, and the first gap 001 between the support plate portion 221 and the current collector plate body 21 can ensure that the support plate portion 221 moves relative to the current collector plate body 21, which is equivalent to enabling the buffer member 22 to elastically deform relative to the current collector plate body 21. The buffer member 22 can absorb the tolerance between the current collector plate body 21 and the housing 10, ensuring that the cover plate 30 can cover the opening 101 and avoiding the problem of virtual soldering between the first current collector plate 20 and the cover plate 30.

[0039] It should be noted that when the cover plate 30 needs to be closed at the opening 101 of the housing 10, the cover plate 30 is connected to the support plate portion 221. Thus, during the closing process of the cover plate 30, the cover plate 30 can drive the support plate portion 221 to move, so that the support plate portion 221 approaches or moves away from the manifold body 21, which is equivalent to elastically deforming the buffer member 22. During the movement of the support plate portion 221, the support plate portion 221 is equivalent to absorbing the tolerance between the manifold body 21 and the housing 10. Specifically, if there is a tolerance between the manifold body 21 and the housing 10, when the cover plate 30 is closed at the opening 101, the cover plate 30 may be blocked by the manifold body 21. However, the existence of the support plate portion 221 can ensure that when the cover plate 30 applies a force to the support plate portion 221 to make the support plate portion 221 approach the manifold body 21, more installation space is provided for the cover plate 30, so that the cover plate 30 can be closed at the opening 101; and when the support plate portion 221 and the cover plate 30 are welded, the support plate portion 221 can deform, so as to ensure that the support plate portion 221 is in close contact with the cover plate 30, thereby avoiding the problem of poor welding between the cover plate 30 and the support plate portion 221.

[0040] In addition, in some embodiments, such as Figure 8 and Figure 9 shown, the support plate portion 221 includes a first support plate 222. One end of the first support plate 222 is connected to the first bending portion 2111, and the other end extends toward the center side of the manifold body 21. The side of the first support plate 222 facing the cover plate 30 is connected to the cover plate 30.

[0041] With such a setting, there is a first gap 001 between the first support plate 222 and the manifold body 21. Thus, when the cover plate 30 is closed at the opening 101 of the housing 10 and the cover plate 30 and the first support plate 222 are welded, during the installation process of the cover plate 30, the cover plate 30 can drive the first support plate 222 to move relative to the manifold body 21, so that the first support plate 222 moves away from or approaches the manifold body 21. Thus, the movement of the first support plate 222 is equivalent to absorbing the tolerance between the manifold body 21 and the housing 10, enabling the cover plate 30 to be closed at the opening 101 and avoiding the problem of poor welding between the cover plate 30 and the first manifold 20.

[0042] In addition, in some embodiments, such as Figure 7As shown, the support plate portion 221 further includes at least one second bending portion 2112 and at least one second support plate 223; when the second bending portion 2112 is provided with one and the second support plate 223 is provided with one, the second bending portion 2112 is connected to one end of the first support plate 222 away from the first bending portion 2111, and the second support plate 223 is connected to one end of the second bending portion 2112 away from the first support plate 222 and extends toward the side away from the center of the current collector plate body 21, and the second support plate 223 is welded to the cover plate 30; when the second bending portion 2112 is provided with two or more and the second support plate 223 is provided with two or more, one of the second bending portions 2112 is connected to one end of the first support plate 222 away from the first bending portion 2111, and one of the second support plates 223 is connected to one end of the second bending portion 2112 away from the first support plate 222 and extends toward the side away from the center of the current collector plate body 21; the remaining second bending portions 2112 are connected to any two adjacent second support plates 223, and the extending directions of any two adjacent second support plates 223 are opposite, and in the height direction of the housing 10, the second support plate 223 farthest from the current collector plate body 21 is welded to the cover plate 30.

[0043] When the second bending portion 2112 is provided with one and the second support plate 223 is provided with one, at this time, the second bending portion 2112 can be connected to one end of the first support plate 222 away from the first bending portion 2111, and the second support plate 223 is connected to one end of the second bending portion 2112 away from the first support plate 222 and extends toward the side away from the center of the current collector plate body 21. Thus, during the installation of the cover plate 30, the cover plate 30 can be welded to the second support plate 223. The first support plate 222 is connected to the cover plate 30 through the second support plate 223. Thus, the cover plate 30 can apply a force to the second support plate 223, and the second support plate 223 can drive the first support plate 222 to move through the second bending portion 2112. Thus, the first support plate 222 moves away from or close to the current collector plate body 21, which is equivalent to elastically deforming the buffer member 22, ensuring that the cover plate 30 can be covered on the opening 101 and avoiding the problem of poor soldering between the cover plate 30 and the first current collector plate 20. Among them, the first support plate 222 and the second support plate 223 are connected through the second bending portion 2112, so that there is a gap between the first support plate 222 and the second support plate 223, ensuring that when the second support plate 223 is stressed, the second support plate 223 can also move relative to the current collector plate body 21, and further the second support plate 223 moves close to or away from the current collector plate body 21.

[0044] When the second bending portion 2112 is provided with two or more, and the second support plate 223 is provided with two or more, at this time, one of the second bending portions 2112 can be connected to one end of the first support plate 222 away from the first bending portion 2111, and one of the second support plates 223 is connected to one end of the second bending portion 2112 away from the first support plate 222 and extends toward the side away from the center of the current collector plate body 21. The remaining second bending portions 2112 are connected to any two adjacent second support plates 223, and the extending directions of any two adjacent second support plates 223 are opposite. Thus, when the cover plate 30 is closed at the opening 101 of the housing 10, in the height direction of the housing 10, the second support plate 223 with the farthest distance from the cover plate 30 to the current collector plate body 21 can be welded. The first support plate 222 is connected to the cover plate 30 through the second support plate 223. Thus, the cover plate 30 can apply a force to the second support plate 223 welded thereto, and the second support plate 223 can apply a force to the remaining second support plates 223 through the second bending portion 2112 until the force is transmitted to the first support plate 222, driving the first support plate 222 to move. Thus, the first support plate 222 moves away from or close to the current collector plate body 21, which is equivalent to elastically deforming the buffer member 22, ensuring that the cover plate 30 can be closed at the opening 101 and avoiding the problem of virtual soldering between the cover plate 30 and the first current collector plate 20. Among them, the first support plate 222 and the second support plate 223 are connected through the second bending portion 2112, so that there is a gap between the first support plate 222 and the second support plate 223, ensuring that when the second support plate 223 is stressed, the second support plate 223 can also move relative to the current collector plate body 21, and then the second support plate 223 moves close to or away from the current collector plate body 21, and there is also a gap between two adjacent second support plates 223, ensuring that after the second support plate 223 welded to the cover plate 30 is stressed, the second support plate 223 can drive the remaining second support plates 223 to move relative to the current collector plate body 21, and then all the second support plates 223 move close to or away from the current collector plate body 21.

[0045] In addition, in some embodiments, as Figure 7 shown, the housing 10 has a height direction Z, and the orthographic projections of the first support plate 222 and the second support plate 223 on the projection plane perpendicular to the height direction at least partially overlap.

[0046] When installing the cover plate 30 at the opening 101 of the housing 10, the cover plate 30 is welded to a second support plate 223. After that, during the process of installing the cover plate 30, the cover plate 30 can drive the second support plate 223 connected thereto to move relative to the current collector plate body 21. By setting the positive projections of the first support plate 222 and the second support plate 223 on the projection plane perpendicular to the height direction to at least partially overlap, it can be ensured that the second support plate 223 can drive the first support plate 222 to move in the height direction of the housing 10, so that the first support plate 222 approaches or moves away from the current collector plate body 21, which is equivalent to absorbing the tolerance between the current collector plate body 21 and the housing 10, ensuring that the cover plate 30 can cover the opening 101 of the housing 10.

[0047] In addition, in some embodiments, as Figure 5 shown, the buffer member 22 is provided on the outer peripheral side of the current collector plate body 21 and extends along the circumferential direction of the current collector plate body 21.

[0048] Generally, the battery cell 50 is in the middle of the current collector plate body 21. By providing the buffer member 22 on the outer peripheral side of the current collector plate body 21 and extending along the circumferential direction of the current collector plate body 21, when connecting the buffer member 22 to the cover plate 30, the edge of the cover plate 30 is equivalent to being connected to the buffer member 22, which is equivalent to the middle part of the buffer member 22 being able to avoid the middle part of the current collector plate body 21, facilitating the subsequent setting of a through hole in the middle of the current collector plate body 21, so as to inject electrolyte into the battery through this through hole. That is, by providing the buffer member 22 on the outer peripheral side of the current collector plate body 21 and extending along the circumferential direction of the current collector plate body 21, it is convenient to set a through hole in the middle of the current collector plate body 21 subsequently, so as to inject electrolyte into the housing 10 of the battery.

[0049] It should be noted that the buffer member 22 can surround the outer peripheral side of the current collector plate body 21 for one week, so that the shape of the projection of the buffer member 22 on the current collector plate body 21 is equivalent to a ring.

[0050] In addition, in some embodiments, as Figure 10 shown, the buffer member 22 includes a plurality of sub-buffer members 2201 that are circumferentially spaced apart along the current collector plate body 21, and there is a second gap 002 between adjacent two sub-buffer members 2201.

[0051] With such a setting, when connecting the cover plate 30 to the buffer member 22, the cover plate 30 can be connected to a plurality of sub-buffer members 2201 at the same time. Thus, during the process of installing the cover plate 30 on the opening 101 of the housing 10, the plurality of sub-buffer members 2201 can elastically deform at the same time, which can better absorb the tolerance between the current collector plate body 21 and the housing 10 and facilitate the installation of the cover plate 30.

[0052] In addition, in the embodiments of the present application, a through groove 2110 communicating with the second gap 002 may be provided on the current collector plate body 21, which is equivalent to increasing the size of the second gap 002 between two adjacent sub-buffer members 2201, facilitating the elastic deformation of the sub-buffer members 2201. Through such a setting, along the circumference of the current collector plate body 21, two adjacent sub-buffer members 2201 are isolated from each other. Therefore, when any sub-buffer member 2201 undergoes elastic deformation, it is less interfered with by the adjacent sub-buffer member 2201. That is, by setting the second gap 002 to extend to the current collector plate body 21, it is beneficial to the elastic deformation of the sub-buffer members 2201.

[0053] In addition, in some embodiments, as Figure 10 shown, a central hole 2101 and a plurality of positioning holes 2102 are provided on the current collector plate body 21; the central hole 2101 is located at the center of the current collector plate body 21, and the plurality of positioning holes 2102 surround the central hole 2101 and are spaced apart. The central hole 2101 and the positioning holes 2102 are used to position the cover plate 30.

[0054] Through such a setting, when welding the cover plate 30 to the buffer member 22 on the current collector plate body 21, the cover plate 30 can be positioned according to the central hole 2101 and any one of the positioning holes 2102, that is, the line connecting the central hole 2101 and any one positioning hole 2102 is used as the positioning line. During the installation process of the cover plate 30, the position of the cover plate 30 can be determined based on this positioning line, and then the cover plate 30 is connected to the buffer member 22. That is, by providing the central hole 2101 and the plurality of positioning holes 2102, it is convenient to install the cover plate 30, that is, when the cover plate 30 is welded to the buffer member 22, the cover plate 30 can be positioned to ensure that the installation position of the cover plate 30 is appropriate.

[0055] It should be noted that the electrolyte can also be injected through the central hole on the current collector plate body 21.

[0056] In addition, in some embodiments, as Figure 4 shown, the cover plate 30 includes a body portion 301 and a convex portion 302. The convex portion 302 is connected to the body portion 301 and protrudes toward the side of the battery cell 50 on the surface of the body portion 301. The support plate portion 221 is connected to the convex portion 302.

[0057] Since the convex portion 302 is connected to the main body and protrudes toward the side of the battery cell 50 on the surface of the main body portion 301, when connecting the cover plate 30 to the buffer member 22, the convex portion 302 will be closer to the buffer member 22 relative to the main body portion 301, thus facilitating the connection between the convex portion 302 and the buffer member 22. And the support plate portion 221 essentially protrudes from the current collector plate main body 21. Therefore, the support plate portion 221 can be connected to the convex portion 302, so that when installing the cover plate 30, the cover plate 30 can be connected to the support plate portion 221 without moving too much. That is, by providing the cover plate 30 with the main body portion 301 and the convex portion 302, it is convenient for the cover plate 30 to be connected to the support plate portion 221 when installing the cover plate 30.

[0058] In addition, in some embodiments, as Figure 4 shown, the battery further includes a support member 40. The support member 40 is located between the current collector plate main body 21 and the cover plate 30, and the support member 40 abuts against the current collector plate main body 21 and the cover plate 30 respectively.

[0059] By providing the support member 40, the support member 40 can support the cover plate 30, preventing the cover plate 30 from deforming and squeezing the current collector plate main body 21 after being stressed. That is, the support member 40 can effectively separate the current collector plate main body 21 from the cover plate 30, playing a protective role for the current collector plate main body 21. That is, by providing the support member 40, the current collector plate main body 21 can be effectively protected.

[0060] It should be noted that the support member 40 can be in a disc-shaped structure. Of course, the support member 40 can also be in a block-shaped structure. The specific structural shape of the support member 40 is not limited in the embodiments of the present application.

[0061] In addition, in some embodiments, as Figure 11 shown, the support member 40 is provided with a first through hole 41 and a plurality of second through holes 42; the first through hole 41 is located at the center of the support member 40, and the plurality of second through holes 42 surround the first through hole 41 and are spaced apart. The first through hole 41 is used to inject electrolyte into the housing 10, and the second through holes 42 are used to allow the electrolyte in the housing 10 to flow.

[0062] By providing the first through hole 41 and the plurality of second through holes 42 on the support member 40, after installing the cover plate 30 on the opening 101 of the housing 10, electrolyte can be injected into the housing 10 through the first through hole 41, and the electrolyte flows in the housing 10. Once the electrolyte flows to the support member 40, the second through holes 42 can provide a flow channel for the electrolyte, enabling the electrolyte to circulate in the housing 10.

[0063] It should be noted that, in the embodiments of the present application, the support member 40 can be elastic, that is, the support member 40 can be formed of an elastic material, so that when the cover plate 30 deforms and presses the support member 40, the support member 40 can absorb the deformation of the cover plate 30, thereby avoiding damage to the current collector plate body 21.

[0064] In addition, in some embodiments, the battery may further include a second current collector plate 60 and a pole column assembly 70; the second current collector plate 60 is located in the housing 10, and the battery cell 50 is located between the first current collector plate 20 and the second current collector plate 60. The pole column assembly 70 is connected to the second current collector plate 60, and a part of the pole column assembly 70 extends out of the housing 10. By providing the pole column assembly 70, it is convenient for the battery to be connected to the component to be powered subsequently, so as to supply power to the component to be powered. Among them, the pole column assembly 70 may include a riveting member 71, a plastic 72, a pole column 74, a sealing member 73 and an internal plastic 75. The riveting member 71, the plastic 72, the sealing member 73, the pole column 74 and the internal plastic 75 are stacked in sequence, and at least a part of the pole column 74 extends out of the housing 10, and the riveting member 71 and the plastic 72 are located outside the housing 10.

[0065] In the embodiment of the present application, since the housing 10 has an opening 101, the battery cell 50 can be disposed in the housing 10 through the opening 101, and the cover plate 30 can be covered on the opening 101 to close the opening 101. Since the first current collector plate 20 is located in the housing 10, and the current collector plate body 21 is connected to the first bent portion 2111 and the support plate portion 221 connected to the first bent portion 2111, and there is a first gap 001 between the support plate portion 221 and the current collector plate body 21, the support plate portion 221 can move relative to the current collector plate body 21, that is, the support plate portion 221 can approach or move away from the current collector plate body 21, causing the buffer member 22 to elastically deform. Thus, when the cover plate 30 is covered on the opening 101, the cover plate 30 can be connected to the support plate portion 221, which is equivalent to connecting the cover plate 30 to the buffer member 22. In the axial direction of the housing 10, the cover plate 30 can cover the opening 101, and the buffer member 22 can elastically deform. Therefore, the elastic deformation of the buffer member 22 can absorb the tolerance between the current collector plate body 21 and the housing 10, ensuring that the cover plate 30 can cover the opening 101 and the buffer member 22 can elastically deform, and also avoiding the problem of false soldering between the cover plate 30 and the first current collector plate 20. That is to say, in the embodiment of the present application, by providing the buffer member 22 on the current collector plate body 21, when the cover plate 30 is covered on the opening 101 of the housing 10, the cover plate 30 is connected to the support plate portion 221, and the first gap 001 between the support plate portion 221 and the current collector plate body 21 can ensure that the support plate portion 221 moves relative to the current collector plate body 21, which is equivalent to enabling the buffer member 22 to elastically deform relative to the current collector plate body 21. The buffer member 22 can absorb the tolerance between the current collector plate body 21 and the housing 10, ensuring that the cover plate 30 can be covered on the opening 101 and avoiding the problem of false soldering between the first current collector plate 20 and the cover plate 30.

[0066] The embodiment of the present application provides an electrical device, and the electrical device includes a battery as in any one of the above embodiments.

[0067] It should be noted that in the embodiment of the present application, the electrical device includes, but is not limited to, vehicles, electrical machines, etc.

[0068] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0069] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery, characterized in that: The battery comprises: a housing having an opening; A battery cell, disposed in the housing; A cover plate, covering the opening to close the opening; A first current collecting plate, the first current collecting plate is located in the shell, the first current collecting plate includes a current collecting plate body and a buffer, the current collecting plate body has a mounting surface, the mounting surface faces the cover plate, the buffer includes a first bending portion connected to the current collecting plate body and a support plate portion connected to the first bending portion, the support plate portion is located on the side of the current collecting plate body where the mounting surface is located, a first gap is provided between the support plate portion and the current collecting plate body so that the buffer can be elastically deformed, the support plate portion is connected to the cover plate, and the side of the current collecting plate body facing away from the mounting surface is electrically connected to the battery cell.

2. The battery according to claim 1, characterized in that The support plate portion includes a first support plate, one end of the first support plate is connected to the first bending portion, the other end of the first support plate extends toward one side of the center of the collecting plate body, and the first support plate is connected to the cover plate at one side facing the cover plate.

3. The battery according to claim 2, characterized in that The support plate portion further includes at least one second bending portion and at least one second support plate; When the second bending portion is provided as one and the second support plate is provided as one, the second bending portion is connected to one end of the first support plate away from the first bending portion, the second support plate is connected to one end of the second bending portion away from the first support plate and extends toward a side away from the center of the collecting plate body, and the second support plate is welded to the cover plate; When there are two or more second bending portions, and there are two or more second support plates, one of the second bending portions is connected to an end of the first support plate away from the first bending portion, and one of the second support plates is connected to an end of the second bending portion away from the first support plate and extends toward a side away from the center of the collecting plate body; the remaining second bending portions connect any two adjacent second support plates, and any two adjacent second support plates extend in opposite directions. In the height direction of the shell, the second support plate farthest from the collecting plate body is welded to the cover plate.

4. The battery according to claim 3, characterized in that The shell has a height direction, and the orthographic projections of the first support plate and the second support plate on a projection plane perpendicular to the height direction at least partially overlap.

5. The battery according to claim 1, characterized in that The buffer is disposed on the outer circumferential side of the current collecting plate body and extends along the circumferential direction of the current collecting plate body.

6. The battery according to claim 5, characterized in that The buffer member includes a plurality of sub-buffer members spaced apart and distributed along the circumference of the current collecting plate body, and a second gap is provided between two adjacent sub-buffer members.

7. The battery according to claim 6, characterized in that The second gap extends to the collecting plate body.

8. The battery according to any one of claims 1 to 7, characterized in that The cover plate includes a main body portion and a raised portion, wherein the raised portion is connected to the main body portion and raised on a surface of the main body portion toward one side of the battery cell, and the support plate portion is connected to the raised portion.

9. The battery according to any one of claims 1 to 7, characterized in that The battery further includes a support member, which is located between the current collecting disc body and the cover plate, and the support member abuts against the current collecting disc body and the cover plate respectively.

10. An electrical device, characterized in that: The electrical device comprises the battery as claimed in any one of claims 1 to 9.

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