Battery and electric equipment

Abstract

The utility model relates to the technical field of power batteries, and discloses a battery and electric equipment, and the electric equipment comprises the battery; the battery comprises a shell, a roll core, a cover plate and a collector plate, the shell is provided with a first slope. The cover plate is provided with a second inclined surface, and the second inclined surface extends along the periphery of the cover plate and is opposite to the first inclined surface; the flow collecting disc comprises a flow collecting part, an elastic part and an inclined part; the current collecting part is connected with the roll core; the elastic part is elastically supported between the flow collecting part and the inclined part, the inclined part is clamped between the first inclined surface and the second inclined surface, and the first inclined surface and the second inclined surface are welded and fixed by the inclined part; the inclination angle of the inclined part is alpha, and alpha is larger than 0 degree and smaller than 90 degrees. The first inclined surface is arranged on the shell, the second inclined surface is arranged on the cover plate, and the inclined part of the collector plate is clamped between the first inclined surface and the second inclined surface, so that the collector plate, the cover plate and the shell can be connected and fixed through one-time welding, the assembly procedures are reduced, the assembly cost is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a battery and electrical equipment. Background Art

[0002] The collector plate is an important component of the battery. The function of the collector plate is to connect the winding core tab and the cover plate so that the winding core and the cover plate are conductive to meet the flow of current. In the assembly process of existing batteries, it is necessary to first weld the collector plate and the cover plate, then close the cover plate and the shell, and weld the cover plate and the shell to package and fix the collector plate and the winding core in the shell. The assembly process is cumbersome and the assembly efficiency is poor. Utility Model Content

[0003] The technical problems to be solved by the utility model are:

[0004] The battery assembly process is complicated and the assembly efficiency is poor.

[0005] In order to solve the above technical problems, the utility model provides a battery having a first direction, the battery comprising:

[0006] A shell, the shell having a cavity and a first inclined surface; the cavity extends along the first direction, and the first inclined surface is arranged at one end of the cavity along the first direction;

[0007] A winding core, disposed in the cavity;

[0008] a cover plate, the cover plate covers the cavity; the cover plate has a second inclined surface, the second inclined surface extends along the periphery of the cover plate, and the second inclined surface is arranged opposite to the first inclined surface; and

[0009] A current collecting plate, the current collecting plate is arranged between the winding core and the cover plate; the current collecting plate comprises a current collecting portion, an elastic portion and an inclined portion; the current collecting portion is connected to the winding core; the elastic portion is elastically supported between the current collecting portion and the inclined portion, and the two sides of the elastic portion in the first direction are respectively connected to the current collecting portion and the inclined portion; the inclined portion is clamped between the first inclined surface and the second inclined surface, and the inclined portion is welded to fix the first inclined surface and the second inclined surface;

[0010] Wherein, an inclination angle of the inclined portion relative to the first direction is α, and 0°<α<90°.

[0011] In one embodiment, the first inclined plane is parallel to the second inclined plane, and the inclination angles of the first inclined plane and the second inclined plane relative to the first direction are both equal to α.

[0012] In one embodiment, a latching tooth is provided on the inclined portion; the latching tooth is convexly provided on two opposite sides of the inclined portion, and a latching groove is provided at the first inclined surface and the second inclined surface at the position corresponding to the latching tooth, and the latching tooth is inserted into the latching groove.

[0013] In one embodiment, the cross-sectional area of ​​the latching tooth decreases from the inclined portion toward a direction away from the inclined portion.

[0014] In one of the embodiments, the current collecting plate further includes an extending portion; the extending portion is disposed between the elastic portion and the inclined portion, and the extending portion is extended along the first direction.

[0015] In one of the embodiments, a boss is disposed on the cover plate; the boss is protruded from the cover plate toward the cavity, and the extension portion is clamped between the outer side wall of the boss and the inner side wall of the shell.

[0016] In one embodiment, the elastic portion is an arc-shaped plate-like structure, and a plurality of the elastic portions are provided, and each of the elastic portions is arranged at intervals around the periphery of the current collecting portion.

[0017] In one embodiment, the current collecting portion, the elastic portion and the inclined portion are connected as a whole, so that the current collecting plate is an integrated part.

[0018] In one embodiment, the collecting part includes a plate-like member and a hook member; the plate-like member is connected to the winding core, the hook member extends along the periphery of the plate-like member, the hook member extends from the plate-like member in a direction away from the winding core, and the hook member is connected to the elastic part.

[0019] An electrical device comprises the above-mentioned battery, wherein the battery provides the electrical device with the electrical energy required for operation.

[0020] Compared with the prior art, the above battery has the following advantages:

[0021] By arranging a first inclined surface on the shell, arranging a second inclined surface on the cover plate, arranging an inclined portion on the current collecting plate and clamping the inclined portion between the first inclined surface and the second inclined surface, it is ensured that the current collecting plate, the cover plate and the shell can be connected and fixed by one welding, thereby reducing the assembly process, reducing the assembly cost and improving the assembly efficiency.

[0022] By arranging the latch teeth on the inclined portion, the fitting area between the inclined portion and the first inclined surface and the second inclined surface on both sides is increased, thereby improving the connection reliability between the collecting plate, the cover plate and the shell after welding.

[0023] By arranging an extension portion on the collecting disk and extending the extension portion along the first direction, when the collecting disk is subjected to the impact load of the winding core, the impact load will act on the inclined portion along the first direction through the extension portion. Since there is an inclination angle between the inclined portion and the first direction, a component force will be generated, thereby avoiding that all impact loads are converted into torque acting at the inclined portion position, so as to improve the bearing capacity at the welding position of the inclined portion.

[0024] By arranging a boss on the cover plate and cooperating with the extension on the collecting plate, by clamping the extension between the boss and the inner wall of the shell, and because the extension extends along a first direction, the extension direction of the extension and the inclined portion are different, so that during the welding process, the extension and the inclined portion are fixed between the shell and the cover plate at different angles, thereby improving the comprehensive load-bearing capacity at multiple angles at the welding position. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the exploded structure of a battery according to the first embodiment of the present utility model;

[0026] Figure 2 for Figure 1 A schematic cross-sectional view of the middle housing;

[0027] Figure 3 for Figure 1 Schematic diagram of the structure of the middle cover;

[0028] Figure 4 for Figure 1 Schematic diagram of the structure of the middle current collecting plate;

[0029] Figure 5 for Figure 1 A schematic cross-sectional view of a battery;

[0030] Figure 6 for Figure 5 An enlarged schematic diagram of the middle circle A portion;

[0031] Figure 7 It is a partially enlarged schematic diagram of a cross-sectional view of a battery according to a second embodiment of the utility model;

[0032] Figure 8 It is a partially enlarged schematic diagram of a battery cross-sectional view of the third embodiment of the utility model.

[0033] The meanings of the numbers in the accompanying drawings are:

[0034] 100. Battery;

[0035] 10. housing; 11. cavity; 15. first inclined surface;

[0036] 20. Roll core;

[0037] 30. cover plate; 35. second inclined surface;

[0038] 40. current collecting plate; 41. current collecting portion; 411. plate-shaped member; 412. hooking member; 42. elastic portion; 43. inclined portion;

[0039] 200. Battery;

[0040] 30a, cover plate; 31, boss;

[0041] 40a, current collecting plate; 44, extension portion;

[0042] 300. Battery;

[0043] 40b, collecting plate; 435, latching teeth. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0050] See also Figure 1 , is a battery 100 according to an embodiment of the present invention, having an X-axis direction. For the sake of convenience, the first direction is defined as the X-axis direction. Figures 1 to 6The battery 100 includes a shell 10, a core 20, a cover plate 30 and a current collecting plate 40. The shell 10 has a cavity 11 and a first inclined surface 15; the cavity 11 extends along a first direction, and the first inclined surface 15 is arranged at one end of the cavity 11 along the first direction. The core 20 is arranged in the cavity 11 to be protected by the shell 10. The core 20 is used to convert chemical energy into electrical energy to meet the electricity demand. The core 20 is the core component of the battery 100 for power generation. The cover plate 30 covers the cavity 11 so that the cavity 11 forms a relatively closed environment to achieve packaging protection of the core 20; the cover plate 30 has a second inclined surface 35, which extends along the periphery of the cover plate 30, and the second inclined surface 35 is arranged opposite to the first inclined surface 15. The current collecting plate 40 is arranged between the winding core 20 and the cover plate 30; the current collecting plate 40 includes a current collecting portion 41, an elastic portion 42 and an inclined portion 43; the current collecting portion 41 is connected to the winding core 20; the elastic portion 42 is elastically supported between the current collecting portion 41 and the inclined portion 43, and the elastic portion 42 is respectively connected to the current collecting portion 41 and the inclined portion 43 on both sides of the first direction. The elastic portion 42 can effectively absorb the pressure load borne by the winding core 20 during the installation process, and then eliminate the assembly tolerance between the winding core 20 and the cover plate 30 through its own elastic deformation, thereby improving the yield rate of the battery 100. The inclined portion 43 is clamped between the first inclined surface 15 and the second inclined surface 35, and the inclined portion 43 is welded to fix the first inclined surface 15 and the second inclined surface 35; wherein, the inclined angle of the inclined portion 43 relative to the first direction is α, 0°<α<90°, and by arranging the inclined portion 43 between the first inclined surface 15 and the second inclined surface 35 in an inclined posture and then welding and fixing them, a single welding operation is performed to connect and fix the housing 10, the cover plate 30 and the collecting plate 40, thereby improving the assembly efficiency, and the inclined setting can effectively increase the bonding area at the welding position, thereby improving the connection reliability at the welding position.

[0051] Further, the shell 10 is arranged in a hollow cylindrical structure, and the central axis of the shell 10 is extended along the first direction; the cavity 11 is in a cylindrical groove shape, and the cavity 11 passes through at least one side of the shell 10 along the first direction, and the cover plate 30 covers the cavity 11. In this embodiment, the cover plate 30 is covered on the negative electrode side of the shell 10, and the cover plate 30 serves as the negative electrode of the battery 100; it can be understood that the battery 100 has a positive electrode and a negative electrode, and the positive electrode and the negative electrode can be arranged on both sides of the shell 10 relatively along the first direction, and the structure of the positive electrode can also adopt the same structure as the negative electrode, that is, the cavity 11 passes through the shell 10 along the first direction, and the cover plates 30 of the positive and negative electrodes respectively cover the openings on both sides of the shell 10. It should be noted that the cover plate 30 located at the positive electrode needs to be insulated from the shell 10 to avoid short circuit between the positive and negative electrodes.

[0052] Further, the first inclined surface 15 is arranged at the opening position of the cavity 11, and the first inclined surface 15 is used to fit with the inclined portion 43. In the first direction, the first inclined surface 15 is arranged to diffusely tilt from the inside of the shell 10 to the outside of the shell 10. It can be understood that when the positive and negative electrodes adopt the same structure, the first inclined surface 15 can be relatively arranged at the opposite ends of the shell 10 in the first direction, so that the connection positions of the positive and negative electrodes can be fixed by welding at one time.

[0053] Furthermore, the winding core 20 is formed by winding positive and negative electrode sheets (not shown) that are alternately stacked in sequence, and each positive electrode sheet is connected to the positive electrode of the battery 100, and each negative electrode sheet is connected to the negative electrode of the battery 100 to form a current circulation loop. In this embodiment, the current collecting disk 40 is electrically connected to each negative electrode sheet of the winding core 20.

[0054] Further, the cover plate 30 is generally in the shape of a straight plate, the extension plane of the cover plate 30 is perpendicular to the first direction, and the cover plate 30 is electrically connected to the current collecting plate 40. The second inclined surface 35 is extended along the periphery of the cover plate 30, and the second inclined surface 35 corresponds to the setting position of the first inclined surface 15. The first inclined surface 15 and the second inclined surface 35 are clamped on both sides of the inclined portion 43, so that the current collecting plate 40 is synchronously connected to the housing 10 and the cover plate 30 by one welding.

[0055] Further, the current collecting part 41 is in the shape of a straight plate, the extension plane of the current collecting part 41 is perpendicular to the first direction, and the current collecting part 41 is connected to the winding core 20. In this embodiment, the current collecting part 41 includes a plate-like member 411 and a hooking member 412. The plate-like member 411 is in the shape of a straight plate, and the plate-like member 411 is connected to the winding core 20; the hooking member 412 extends along the periphery of the plate-like member 411, and the hooking member 412 extends from the plate-like member 411 in a direction away from the winding core 20, and the hooking member 412 is connected to the elastic part 42 to ensure that the load of the winding core 20 is transmitted to the elastic part 42 through the plate-like member 411 and the hooking member 412.

[0056] Furthermore, the elastic part 42 is arranged on the side of the hooking member 412 away from the plate-like member 411, and the elastic part 42 is arranged in an annular structure. The elastic part 42 is elastically supported between the inclined part 43 and the current collecting part 41. The elastic part 42 absorbs the load borne by the winding core 20 through its own elastic deformation, and can absorb the assembly tolerance, thereby improving the product qualification rate. In this embodiment, the elastic part 42 is an arc-shaped plate-like structure, and the number of the elastic parts 42 is multiple, and each elastic part 42 is arranged at intervals around the periphery of the current collecting part 41.

[0057] Further, the inclined portion 43 is arranged on the side of the elastic portion 42 away from the current collecting portion 41, and the inclined portion 43 is arranged between the first inclined surface 15 and the second inclined surface 35. The inclined portion 43 is an annular strip structure. The inclined portion 43 is fixed to the first inclined surface 15 and the second inclined surface 35 synchronously by welding, so that the housing 10, the cover plate 30 and the current collecting plate 40 can be connected and fixed by one welding, thereby improving production efficiency. In this embodiment, the first inclined surface 15 is parallel to the second inclined surface 35, and the inclination angles of the first inclined surface 15 and the second inclined surface 35 relative to the first direction are both equal to α. Since the inclination angle of the inclined portion 43 to the first direction is also α, the first inclined surface 15, the second inclined surface 35 and the inclined portion 43 are arranged in the same direction, which can effectively increase the fitting area, thereby ensuring the reliability of welding. It can be understood that in other embodiments, the first bevel 15 and the second bevel 35 may not be parallel, and the first bevel 15 and the second bevel 35 may also have different inclination angles with the inclined portion 43. It is only necessary to ensure that part of the first bevel 15 and the second bevel 35 are in contact with the inclined portion 43 and to weld and fix the contact area.

[0058] Furthermore, the thickness of the housing 10 is B, the depth of the assembly groove from the outer edge of the inclined portion 43 to the port of the housing 10 is L, and the length of the inclined portion 43 is H. By using the above formula, the fitting area between the inclined portion 43, the first inclined surface 15 and the second inclined surface 35 can be effectively guaranteed, thereby improving the reliability of the connection fixed by welding. In this embodiment, the length of the inclined portion 43 is 0.4mm≤H≤1.2mm. The inclination angle of the inclined portion 43 is 30°≤α≤70°. The depth of the assembly groove from the outer edge of the inclined portion 43 to the port of the housing 10 is 0.1mm≤L≤0.3mm.

[0059] Furthermore, the current collecting portion 41 , the elastic portion 42 and the inclined portion 43 are connected as a whole, so that the current collecting plate 40 is an integrated piece, so as to improve the overall bearing strength of the current collecting plate 40 and ensure the performance of absorbing the load of the winding core 20 .

[0060] See also Figure 7, which is a battery 200 according to a second embodiment of the present invention, is different from the battery 100 according to the first embodiment in that the current collecting plate 40 a of the battery 200 according to the present embodiment further includes an extension portion 44 . The extension portion 44 is arranged between the elastic portion and the inclined portion 43, and the extension portion 44 is extended along the first direction. By arranging the extension portion 44, the load borne by the elastic portion 42 can be effectively transferred to the inclined portion 43 in the first direction. Since the inclined portion 43 is the connection position with the outer shell 10 and the cover plate 30a, the inclined portion 43 has an impact on the sealing reliability of the overall battery 200. The extension portion 44 transfers the load to the inclined portion 43 in the first direction. Since there is an inclination angle α between the inclined portion 43 and the first direction, the load will be divided into a force in the extension direction of the vertical inclined portion 43 and a force along the extension direction of the inclined portion 43. Since there is a component force along the extension direction of the inclined portion 43, the force in the extension direction of the vertical inclined portion 43 will be effectively reduced. The desoldering or loosening of the inclined portion 43 is mainly due to the torque generated by the force in the vertical direction, and the extension portion 44 can effectively reduce the force in the direction perpendicular to the inclined portion 43 by means of component force, thereby reducing the torque of the load acting on the inclined portion 43, thereby improving the connection reliability at the welding position of the inclined portion 43.

[0061] Furthermore, a boss 31 is provided on the cover plate 30a. The boss 31 is provided to protrude from the cover plate 30a toward the cavity, and the extension portion 44 is clamped between the outer side wall of the boss 31 and the inner side wall of the shell 10, so that the two sides of the inclined portion 43 are respectively fitted with the shell 10 and the cover plate 30a, and the two sides of the extension portion 44 are also respectively fitted with the shell 10 and the cover plate 30a, and because the extension portion 44 is provided along the first direction, the inclined portion 43 has an inclination angle α with the first direction, so the extension portion 44 has an inclination angle α with the inclined portion 43, so that the inclined portion 43 and the extension portion 44 can be fixed between the shell 10 and the cover plate 30a at the same time during welding, and the inclined portion 43 and the extension portion 44 are provided in different directions, which can effectively improve the multi-angle comprehensive bearing capacity of the welding position.

[0062] See also Figure 8 , which is a battery 300 of the second embodiment of the utility model, and is different from the battery 100 of the first embodiment in that the battery 300 of the present embodiment is provided with a latching tooth 435 on the inclined portion 43. The latching tooth 435 is convexly arranged on opposite sides of the inclined portion 43, and a latching groove is arranged at the position of the first inclined surface and the second inclined surface corresponding to the latching tooth 435, and the latching tooth 435 is inserted into the latching groove; by providing the latching tooth 435 and the latching groove, the fitting area between the inclined portion 43, the first inclined surface and the second inclined surface can be effectively increased, thereby improving the connection strength after welding.

[0063] Furthermore, the cross-sectional area of ​​the latching tooth 435 decreases from the inclined portion 43 to the direction away from the inclined portion 43. In this embodiment, the cross-sectional area of ​​the latching tooth 435 is triangular. By reducing the cross-sectional area of ​​the latching tooth 435, the area of ​​the end of the latching tooth 435 away from the inclined portion 43 can be effectively reduced, thereby ensuring that the end of the latching tooth 435 away from the inclined portion 43 melts first during the welding process, so that the inclined portion 43 melts from the outside to the inside, ensuring welding reliability, and at the same time, the tip of the latching tooth 435 with a triangular cross-section is easier to melt, and the required laser energy is lower, thereby reducing welding energy consumption and saving production costs.

[0064] In summary, the present invention provides a battery, which has the following beneficial effects:

[0065] By providing a first inclined surface 15 on the housing 10, providing a second inclined surface 35 on the cover plate 30, providing an inclined portion 43 on the collecting plate 40 and clamping the inclined portion 43 between the first inclined surface 15 and the second inclined surface 35, it is ensured that the collecting plate 40, the cover plate 30 and the housing 10 can be connected and fixed by one welding, thereby reducing the assembly process, reducing the assembly cost and improving the assembly efficiency.

[0066] By providing the latching teeth 435 on the inclined portion 43 , the contact area between the inclined portion 43 and the first inclined surface 15 and the second inclined surface 35 on both sides is increased, thereby improving the connection reliability among the collecting plate 40 , the cover plate 30 and the housing 10 after welding.

[0067] By providing an extension portion 44 on the collecting plate 40 and extending the extension portion 44 along the first direction, when the collecting plate 40 is subjected to the impact load of the winding core 20, the impact load will act on the inclined portion 43 along the first direction through the extension portion 44. Since the inclined portion 43 has an inclination angle with the first direction, a component force will be generated, thereby avoiding the entire impact load from being converted into a torque acting at the position of the inclined portion 43, so as to improve the bearing capacity at the welding position of the inclined portion 43.

[0068] By providing a boss 31 on the cover plate 30 and cooperating with the extension portion 44 on the collecting plate 40, and by clamping the extension portion 44 between the boss 31 and the inner wall of the outer shell 10, and because the extension portion 44 extends along the first direction, the extension portion 44 and the inclined portion 43 have different extension directions. Therefore, during the welding process, the extension portion 44 and the inclined portion 43 are fixed between the outer shell 10 and the cover plate 30 at different angles, thereby improving the comprehensive load-bearing capacity at multiple angles at the welding position.

[0069] The utility model also discloses an electric device, which includes the above-mentioned battery, and the battery provides the electric device with the electric energy required for operation. It can be understood that the electric device includes vehicles, substations, drones, automation equipment, mobile terminals, and spacecraft, etc. The specific electric device is not limited here, and it is sufficient to ensure that the battery is used in the electric device to store or release electricity.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A battery (100) having a first direction (X), characterized in that: The battery (100) comprises: A housing (10), the housing (10) comprising a cavity (11) and a first inclined surface (15); the cavity (11) extends along the first direction (X), and the first inclined surface (15) is arranged at one end of the cavity (11) along the first direction (X); A winding core (20) is arranged in the cavity (11); a cover plate (30), the cover plate (30) covering the cavity (11); the cover plate (30) having a second inclined surface (35), the second inclined surface (35) extending along the periphery of the cover plate (30), the second inclined surface (35) being arranged opposite to the first inclined surface (15); and A current collecting plate (40), the current collecting plate (40) being arranged between the winding core (20) and the cover plate (30); the current collecting plate (40) comprising a current collecting portion (41), an elastic portion (42) and an inclined portion (43); the current collecting portion (41) being connected to the winding core (20); the elastic portion (42) being elastically supported between the current collecting portion (41) and the inclined portion (43), and the two sides of the elastic portion (42) in the first direction (X) are respectively connected to the current collecting portion (41) and the inclined portion (43); the inclined portion (43) is clamped between the first inclined surface (15) and the second inclined surface (35), and the inclined portion (43) is welded to fix the first inclined surface (15) and the second inclined surface (35); Wherein, the inclination angle of the inclined portion (43) relative to the first direction (X) is α, and 0°<α<90°.

2. The battery (100) according to claim 1, characterized in that: The first inclined surface (15) is parallel to the second inclined surface (35), and the inclination angles of the first inclined surface (15) and the second inclined surface (35) relative to the first direction (X) are both equal to α.

3. The battery (100) according to claim 1, characterized in that: The inclined portion (43) is provided with a latching tooth (435); the latching tooth (435) is convexly arranged on two opposite sides of the inclined portion (43); the first inclined surface (15) and the second inclined surface (35) are provided with a latching groove at a position corresponding to the latching tooth (435); the latching tooth (435) is inserted into the latching groove.

4. The battery (100) according to claim 3, characterized in that: The cross-sectional area of ​​the latching tooth (435) decreases in a direction away from the inclined portion (43).

5. The battery (100) according to claim 1, characterized in that: The collecting plate (40) further comprises an extension portion (44); the extension portion (44) is arranged between the elastic portion (42) and the inclined portion (43), and the extension portion (44) is extended along the first direction (X).

6. The battery (100) according to claim 5, characterized in that: A boss (31) is provided on the cover plate (30); the boss (31) is provided to protrude from the cover plate (30) in the direction of the cavity (11), and the extension portion (44) is clamped between the outer side wall of the boss (31) and the inner side wall of the outer shell (10).

7. The battery (100) according to claim 1, characterized in that: The elastic portion (42) is in the form of an arc-shaped plate structure. A plurality of the elastic portions (42) are provided, and each of the elastic portions (42) is arranged at intervals around the periphery of the current collecting portion (41).

8. The battery (100) according to claim 7, characterized in that: The current collecting portion (41), the elastic portion (42) and the inclined portion (43) are connected as a whole, so that the current collecting plate (40) is an integrated part.

9. The battery (100) according to claim 1, characterized in that: The collecting portion (41) comprises a plate-like member (411) and a hook member (412); the plate-like member (411) is connected to the winding core (20); the hook member (412) extends along the periphery of the plate-like member (411); the hook member (412) extends from the plate-like member (411) in a direction away from the winding core (20); and the hook member (412) is connected to the elastic portion (42).

10. An electrical device, characterized in that: The invention comprises a battery (100) as claimed in any one of claims 1 to 9, wherein the battery (100) provides the electrical equipment with the electrical energy required for operation.

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