Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment, and belongs to the field of batteries. The battery comprises a battery cell body and a protection plate, the battery cell body is provided with a top surface, the top surface is provided with a top seal, the protection plate is arranged on the top surface, the top seal forms a bending structure on the top surface, the bending structure avoids the protection plate, the top seal is connected with a tab, and the tab is electrically connected with the protection plate. In the embodiment of the invention, the bending structure formed by the top seal is arranged to avoid the protection plate, so that the distance between the protection plate and the top surface is closer, compared with a battery packaging scheme in the related technology, other parts between the protection plate and the battery cell body are removed, and the size occupied by the parts can be used for increasing the size of the battery cell body; therefore, when the battery is packaged, the size of the battery cell body is increased in the direction from the top surface to the top seal, so that the energy density of the battery is improved, and the capacity of the battery is further improved.

Description

Technical Field

[0001] The present application belongs to the field of batteries, and specifically relates to a battery and electrical equipment. Background Art

[0002] With the development of science and technology, batteries are used more and more widely. For example, they are widely used in various mobile terminals. However, in the process of battery production, the battery cells and protection components are mainly assembled, and the protection components are used to monitor the current and voltage of the battery cells to perform protection actions when abnormalities occur. However, in related technologies, after the battery is packaged, because the assembly and matching structure of the protection components and the battery cells occupies a lot of space, while keeping the overall size of the battery unchanged, the effective space that can be provided to the battery cells is reduced, and the energy density of the battery is low, resulting in a decrease in capacity. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a battery and an electrical device, which at least solves the problem of low energy density of the battery after the battery is packaged.

[0004] In a first aspect, an embodiment of the present application provides a battery, the battery comprising: a battery cell body and a protection plate;

[0005] The battery cell body has a top surface, the top surface is provided with a top seal, the protection plate is provided on the top surface, the top seal forms a bending structure on the top surface, and the bending structure avoids the protection plate;

[0006] Wherein, the top seal is connected with a pole ear, and the pole ear is electrically connected to the protection plate.

[0007] Optionally, the battery has a first direction, and the protection plate has a first surface and a second surface opposite to each other along the first direction;

[0008] The first surface faces the top surface, and the tab is electrically connected to the second surface through a metal member.

[0009] Optionally, the metal piece is bent to form a receiving groove, a portion of the pole lug is located in the receiving groove and welded to the receiving groove, and the metal piece is welded to the second surface;

[0010] Part of the metal component is located between the pole ear and the second surface, and part of the metal component is located on a side of the pole ear away from the second surface.

[0011] Optionally, the metal piece has a first welding surface and a second welding surface opposite to each other along the first direction;

[0012] The metal part is located between the pole lug and the second surface, a portion of the pole lug is welded to the first welding surface, and the second welding surface is welded to the second surface.

[0013] Optionally, a first mounting groove is provided on the second surface, the metal component is embedded in the first mounting groove, and the pole ear is welded to the metal component.

[0014] Optionally, a second mounting groove is provided on the second surface, a third mounting groove is provided at the bottom of the second mounting groove, the metal component is embedded in the third mounting groove, and at least part of the pole ear is located in the second mounting groove and welded to the metal component.

[0015] Optionally, the battery further includes an electronic component, and the electronic component is arranged inside the protection plate.

[0016] Optionally, the battery has a first direction, and the protection plate has a first surface and a second surface opposite to each other along the first direction;

[0017] The first surface faces the top surface, and a fixing groove is provided on the second surface. An electronic component is embedded in the fixing groove.

[0018] Optionally, the battery further comprises an injection molded part;

[0019] The injection molded part covers the tab, the protection plate and the top seal.

[0020] In a second aspect, an embodiment of the present application provides an electrical device, wherein the electrical device comprises the battery described in any one of the above-mentioned first aspects.

[0021] In the embodiment of the present application, since the top surface of the battery body is provided with a top seal, the top seal is connected with a pole ear, and the protection plate is provided on the top surface, the bending structure formed by the top seal avoids the protection plate, so that the protection plate and the top seal can be avoided from being stacked, so that the distance between the protection plate and the top surface is closer, so that when the battery is packaged, in the direction from the top surface to the top seal, for batteries of the same size, the size of the battery body can be increased, and the pole ear is electrically connected to the protection plate, and the protection plate can protect the inside of the battery body through the pole ear. That is, in the embodiment of the present application, by setting the bending structure formed by the top seal to avoid the protection plate, it is equivalent to the top seal and the pole ear avoiding the protection plate, so that the distance between the protection plate and the top surface is closer, so that relative to the battery packaging scheme in the related art, other components between the protection plate and the battery body are removed, and the size occupied by these components can be used to increase the size of the battery body, so that when the battery is packaged, in the direction from the top surface to the top seal, the size of the battery body is increased, so that the energy density of the battery is increased, and then the capacity of the battery is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 One of the schematic diagrams showing a battery provided in an embodiment of the present application;

[0023] Figure 2 A second schematic diagram showing a battery provided in an embodiment of the present application;

[0024] Figure 3 A third schematic diagram showing a battery provided in an embodiment of the present application;

[0025] Figure 4 A fourth schematic diagram showing a battery provided in an embodiment of the present application;

[0026] Figure 5 A fifth schematic diagram showing a battery provided in an embodiment of the present application;

[0027] Figure 6 A sixth schematic diagram showing a battery provided in an embodiment of the present application;

[0028] Figure 7 A seventh schematic diagram showing a battery provided in an embodiment of the present application;

[0029] Figure 8 An eighth schematic diagram showing a battery provided in an embodiment of the present application;

[0030] Fig. 9 A ninth schematic diagram showing a battery provided in an embodiment of the present application;

[0031] Fig.10 A tenth schematic diagram showing a battery provided in an embodiment of the present application.

[0032] Reference numerals:

[0033] 10: battery cell body; 101: top surface; 20: top seal; 30: pole ear; 40: protection plate; 401: first surface; 402: second surface; 4021: first mounting groove; 4022: second mounting groove; 4023: third mounting groove; 4024: fixing groove; 50: metal part; 501: first welding surface; 502: second welding surface; 60: electronic component; 70: injection molded part. DETAILED DESCRIPTION

[0034] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0035] In the description of the present application, 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 application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Before explaining the battery provided in the embodiment of the present application, the application background of the battery provided in the embodiment of the present application is first specifically explained: In the related art, the battery includes a battery cell body and a protective plate, the battery cell body has a top surface, a top seal is arranged on the top surface, and the top seal is bent relative to the top surface, the top seal is connected to a pole ear, and the protective plate and the top seal are stacked along the direction from the top surface to the top seal, and the pole ear is located between the protective plates, and the pole ear is connected to the protective plate through a nickel sheet, and then the protective plate and the top seal are coated with injection molding to achieve the packaging of the battery. However, in this way, there are components such as a top seal and a pole ear between the protective plate and the top surface, which will cause the battery to be larger in size in the direction from the top surface to the top seal, so that in the case of batteries of the same size, the size of the battery cell body is smaller and the energy density of the battery is lower.

[0038] like Figures 1 to 10 As shown, the battery includes: a battery body 10 and a protection plate 40, the battery body 10 has a top surface 101, the top surface 101 is provided with a top seal 20, the protection plate 40 is provided on the top surface 101, the top seal 20 forms a bending structure on the top surface 101, and the bending structure avoids the protection plate 40. Among them, the top seal 20 is connected to the pole ear 30, and the pole ear 30 is electrically connected to the protection plate 40.

[0039] In the embodiment of the present application, since the top surface 101 of the battery cell body 10 is provided with a top seal 20, the top seal 20 is connected to the pole ear 30, and the protection plate 40 is provided on the top surface 101, the bending structure formed by the top seal 20 avoids the protection plate 40. Therefore, it is possible to avoid the protection plate 40 and the top seal 20 being stacked, so that the distance between the protection plate 40 and the top surface 101 is closer. Therefore, when the battery is packaged, in the direction from the top surface 101 to the top seal 20, for batteries of the same size, the size of the battery cell body 10 can be increased, and the pole ear 30 is electrically connected to the protection plate 40, and the protection plate 40 can protect the interior of the battery cell body 10 through the pole ear 30. That is, in the embodiment of the present application, the bending structure formed by setting the top seal 20 avoids the protective plate 40, which is equivalent to the top seal 20 and the tab 30 avoiding the protective plate 40, so that the distance between the protective plate 40 and the top surface 101 is closer, so that relative to the battery packaging scheme in the related art, other components between the protective plate 40 and the battery cell body 10 are removed, and the dimensions occupied by these components can be used to increase the size of the battery cell body 10, so that when the battery is packaged, the size of the battery cell body 10 is increased in the direction from the top surface 101 to the top seal 20, so that the energy density of the battery is improved, and then the capacity of the battery is improved.

[0040] It should be noted that in the embodiment of the present application, under the premise of satisfying the sealing of the top seal 20, the length of the top seal 20 can be smaller, so that after the top surface 101 bends the top seal 20, the top seal 20 can avoid the protective plate 40, so that the protective plate 40 contacts the top surface 101.

[0041] In addition, in the embodiment of the present application, on the top surface 101 of the battery cell body 10, the protection plate 40 can be in contact with the top seal 20. Of course, the protection plate 40 can also be spaced apart from the top seal 20, that is, there is a gap between the protection plate 40 and the top seal 20. This is not limited in the embodiment of the present application. In particular, whether the protection plate 40 is in contact with the top seal 20 or there is a gap between the protection plate 40 and the top seal 20, it is sufficient for the tab 30 to be electrically connected to the protection plate 40.

[0042] In addition, in the embodiment of the present application, the direction from the top surface 101 of the battery cell body 10 to the top seal 20 can be the length direction of the battery. Therefore, in the embodiment of the present application, it is equivalent to reducing the size of the battery in the length direction of the battery, which is beneficial to improve the energy density of the battery pack after the battery forms a battery pack.

[0043] In addition, in the embodiment of the present application, the protection plate 40 may be in contact with the top surface 101. Of course, insulating tape or the like may be provided between the protection plate 40 and the top surface 101, that is, the protection plate 40 and the top surface 101 are not in direct contact. The embodiment of the present application does not limit this.

[0044] In addition, in some embodiments, Figure 2 As shown, the battery may have a first direction, and the protection plate 40 has a first surface 401 and a second surface 402 opposite to each other along the first direction; the first surface 401 faces the top surface 101 , and the tab 30 is electrically connected to the second surface 402 through the metal member 50 .

[0045] Since the first surface 401 of the protection plate 40 faces the top surface 101, it is equivalent to that the top seal 20 and the pole ear 30 both avoid the protection plate 40, and the distance between the first surface 401 of the protection plate 40 and the top surface 101 is closer, so that when the battery is packaged, the size of the battery is reduced in the direction from the top surface 101 to the top seal 20. Since the pole ear 30 is electrically connected to the second surface 402 through the metal part 50, it can be ensured that the protection plate 40 can protect the inside of the battery body 10 through the pole ear 30.

[0046] It should be noted that the first direction may be a direction parallel to the direction from the top surface 101 to the top seal 20 .

[0047] In addition, in the embodiment of the present application, the first surface 401 of the protection plate 40 may be in contact with the top surface 101. Of course, an insulating tape or the like may be provided between the first surface 401 of the protection plate 40 and the top surface 101, that is, the first surface 401 of the protection plate 40 is not in direct contact with the top surface 101. The embodiment of the present application does not limit this.

[0048] In addition, in the embodiment of the present application, the tab 30 is electrically connected to the second surface 402 through the metal member 50. The metal member 50 can be arranged in different ways, which are specifically described by taking the following as examples:

[0049] Method (1): Figure 2 As shown, the metal part 50 is bent to form a receiving groove 500, part of the pole ear 30 is located in the receiving groove 500 and welded to the receiving groove 500, and the metal part 50 is welded to the second surface 402; wherein, part of the metal part 50 is located between the pole ear 30 and the second surface 402, and part of the metal part 50 is located on the side of the pole ear 30 away from the second surface 402.

[0050] Since the metal member 50 is bent to form the receiving groove 500, when the tab 30 needs to be electrically connected to the second surface 402 through the metal member 50, the tab 30 can be embedded in the receiving groove 500, and then the metal member 50 and the second surface 402 are welded. At this time, part of the metal member 50 will be located between the tab 30 and the second surface 402, and part of the metal member 50 will be located on the side of the tab 30 away from the second surface 402. In addition, by bending the metal member 50 to form the receiving groove 500, the tab 30 can be directly embedded in the receiving groove 500 during the battery packaging process, and the entire process is relatively simple, which is conducive to battery packaging.

[0051] It should be noted that in the embodiment of the present application, the metal member 50 may be a nickel sheet. Of course, the metal member 50 may also be other types, for example, the metal member 50 is a copper sheet. The specific type of the metal member 50 is not limited in the embodiment of the present application.

[0052] Method (2): Figure 3 As shown, the metal part 50 may have a first welding surface 501 and a second welding surface 502 opposite to each other along the first direction; the metal part 50 is located between the tab 30 and the second surface 402 , part of the tab 30 is welded to the first welding surface 501 , and the second welding surface 502 is welded to the second surface 402 .

[0053] Since the metal part 50 may have a first welding surface 501 and a second welding surface 502 opposite to each other along the first direction, when the tab 30 needs to be electrically connected to the second surface 402 of the protective plate 40 through the metal part 50, the tab 30 may be welded to the first welding surface 501, and the second welding surface 502 may be welded to the second surface 402, that is, the metal part 50 is located between the tab 30 and the second surface 402, and there is no metal part 50 on the side of the tab 30 away from the top surface 101 of the cell body 10, so that when packaging the battery, for batteries of the same size, the size of the cell body 10 can be increased in the direction from the top surface 101 to the top seal 20, and the energy density of the battery pack after the battery is formed into a battery pack is further improved. That is, by arranging the metal part 50 between the tab 30 and the second surface 402, the energy density of the battery when the battery is packaged can be further improved.

[0054] It should be noted that in the embodiment of the present application, the metal member 50 may be a nickel sheet. Of course, the metal member 50 may also be other types, for example, the metal member 50 is a copper sheet. The specific type of the metal member 50 is not limited in the embodiment of the present application.

[0055] Method (3): Figure 4 and Figure 5 As shown, a first installation groove 4021 may be provided on the second surface 402 , the metal component 50 is embedded in the first installation groove 4021 , and the tab 30 is welded to the metal component 50 .

[0056] Since the second surface 402 is provided with the first installation groove 4021, the metal part 50 can be embedded in the first installation groove 4021, so that the first installation groove 4021 is equivalent to avoiding part of the metal part 50, so that the distance between the pole ear 30 and the second surface 402 is further reduced, and there is no metal part 50 on the side of the pole ear 30 away from the second surface 402, so that when packaging the battery, for batteries of the same size, the size of the battery body 10 can be increased in the direction from the top surface 101 to the top seal 20, and the energy density of the battery pack after the battery is formed into a battery pack is further improved. That is, by embedding the metal part 50 in the first installation groove 4021, the energy density of the battery can be further improved when the battery is packaged.

[0057] It should be noted that the metal member 50 may be partially embedded in the first installation groove 4021, in which case the metal member 50 protrudes from the second surface 402. Of course, the metal member 50 may also be completely embedded in the first installation groove 4021, and the metal member 50 is flush with the second surface 402. This embodiment of the present application is not limited thereto.

[0058] Method (4): Figure 6 As shown, a second mounting groove 4022 may be provided on the second surface 402 , a third mounting groove 4023 may be provided at the bottom of the second mounting groove 4022 , the metal component 50 is embedded in the third mounting groove 4023 , at least part of the tab 30 is located in the second mounting groove 4022 and welded to the metal component 50 .

[0059] Since a second mounting groove 4022 is provided on the second surface 402, and a third mounting groove 4023 is provided at the bottom of the second mounting groove 4022, the metal member 50 can be embedded in the third mounting groove 4023. When the pole ear 30 needs to be electrically connected to the second surface 402 through the metal member 50, part of the pole ear 30 can be placed in the second mounting groove 4022 and welded to the metal member 50, so that in the direction from the top surface 101 to the top seal 20, the second mounting groove 4022 and the third mounting groove 4023 are equivalent to avoiding the metal member 50 and the pole ear 30 respectively, so that in the direction from the top surface 101 to the top seal 20, the distance between the pole ear 30 and the second surface 402 is further reduced, and there is no metal member 50 on the side of the pole ear 30 away from the second surface 402. When packaging batteries, for batteries of the same size, the size of the battery cell body 10 can be increased in the direction from the top surface 101 to the top seal 20, thereby further improving the energy density of the battery pack after the battery forms a battery pack. That is, by embedding the metal member 50 in the third installation groove 4023 and at least a portion of the tab 30 being located in the second installation groove 4022 , the energy density of the battery can be further improved when the battery is packaged.

[0060] It should be noted that the tab 20 may be flush with the second surface 402 . Of course, the tab 20 may also protrude from the second surface 402 . This is not limited in the embodiment of the present application.

[0061] In addition, in some embodiments, Fig.10 As shown, the battery may further include an electronic component 60 , which is disposed inside the protection plate 40 .

[0062] Since the electronic component 60 is disposed inside the protective plate 40, when the battery is packaged, the electronic component 60 will not occupy additional battery size in the direction from the top surface 101 to the top seal 20, that is, when the battery is packaged, only the circuit board needs to be packaged, and the electronic component 60 is inside the circuit board. The electronic component 60 will not occupy the space on the surface of the circuit board, and will not occupy the battery size in the direction from the top surface 101 to the top seal 20, so that when the battery is packaged, the size of the battery is further reduced. That is, by disposing the electronic component 60 inside the protective plate 40, when the battery is packaged, for batteries of the same size, the size of the battery body 10 can be increased, which is beneficial to the improvement of the energy density of the battery.

[0063] It should be noted that the electronic component 60 can be disposed inside the protection plate 40 through special processes such as wafer packaging or embedding process.

[0064] In addition, in some embodiments, Figure 8 and Fig. 9 As shown, the battery can have a first direction, and the protection plate 40 has a first surface 401 and a second surface 402 opposite to each other along the first direction; the first surface 401 faces the top surface 101, and a fixing groove 4024 is provided on the second surface 402, and an electronic component 60 is embedded in the fixing groove 4024.

[0065] Since the electronic component 60 is embedded in the fixing groove 4024, when the battery is packaged, the size of the battery occupied by the electronic component 60 in the direction from the top surface 101 to the top seal 20 is small, that is, when the battery is packaged, the size of the electronic component 60 is small, so for batteries of the same size, the size of the battery body 10 can be increased, thereby improving the energy density of the battery. That is, by providing the fixing groove 4024 on the second surface 402 and embedding the electronic component 60 in the fixing groove 4024, it is equivalent to that the fixing groove 4024 can avoid the electronic component 60, so that the size of the battery occupied by the electronic component 60 is reduced, and the size of the battery body 10 can be increased, thereby increasing the energy density of the battery.

[0066] It should be noted that a plurality of fixing grooves 4024 may be provided on the second surface 402 , and an electronic component 60 is embedded in each fixing groove 4024 .

[0067] In addition, in some embodiments, Figure 1 As shown, the battery may further include an injection molded part 70 ; the injection molded part 70 covers the tab 30 , the protection plate 40 and the top seal 20 .

[0068] Since the battery further includes the injection molded part 70 , when the battery is packaged, the electrode tab 30 , the protection plate 40 and the top seal 20 can be protected by the injection molded part 70 , that is, the battery can be packaged more easily by providing the injection molded part 70 .

[0069] It should be noted that the injection molded part 70 may be injection molded plastic.

[0070] In addition, in the embodiment of the present application, the battery may further include adhesive tape, which is attached to the outer surface of the injection molded part 70 .

[0071] In addition, in the embodiment of the present application, the protection plate 40 may be a printed circuit board (PCB).

[0072] In the embodiment of the present application, since the top surface 101 of the battery cell body 10 is provided with a top seal 20, the top seal 20 is connected to the pole ear 30, and the protection plate 40 is provided on the top surface 101, the bending structure formed by the top seal 20 avoids the protection plate 40. Therefore, it is possible to avoid the protection plate 40 and the top seal 20 being stacked, so that the distance between the protection plate 40 and the top surface 101 is closer. Therefore, when the battery is packaged, in the direction from the top surface 101 to the top seal 20, for batteries of the same size, the size of the battery cell body 10 can be increased, and the pole ear 30 is electrically connected to the protection plate 40, and the protection plate 40 can protect the interior of the battery cell body 10 through the pole ear 30. That is, in the embodiment of the present application, the bending structure formed by setting the top seal 20 avoids the protective plate 40, which is equivalent to the top seal 20 and the tab 30 avoiding the protective plate 40, so that the distance between the protective plate 40 and the top surface 101 is closer, so that relative to the battery packaging scheme in the related art, other components between the protective plate 40 and the battery cell body 10 are removed, and the dimensions occupied by these components can be used to increase the size of the battery cell body 10, so that when the battery is packaged, the size of the battery cell body 10 is increased in the direction from the top surface 101 to the top seal 20, so that the energy density of the battery is improved, and then the capacity of the battery is improved.

[0073] An embodiment of the present application provides an electrical device, which includes the battery in any of the above embodiments.

[0074] It should be noted that in the embodiments of the present application, electrical equipment includes but is not limited to controllers, smart devices, terminal products and other devices, among which smart devices are, for example, smart phones, smart TVs, smart speakers, smart robots, VR devices, AR devices, XR devices and other devices, and terminal products include personal computers, tablet computers and other products.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that 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 battery cell body and a protection plate; The battery cell body has a top surface, the top surface is provided with a top seal, the protection plate is provided on the top surface, the top seal forms a bending structure on the top surface, and the bending structure avoids the protection plate; Wherein, the top seal is connected with a pole ear, and the pole ear is electrically connected to the protection plate.

2. The battery according to claim 1, characterized in that The battery has a first direction, and the protection plate has a first surface and a second surface opposite to each other along the first direction; The first surface faces the top surface, and the tab is electrically connected to the second surface through a metal member.

3. The battery according to claim 2, characterized in that The metal piece is bent to form a receiving groove, a portion of the pole lug is located in the receiving groove and welded to the receiving groove, and the metal piece is welded to the second surface; Part of the metal component is located between the pole ear and the second surface, and part of the metal component is located on a side of the pole ear away from the second surface.

4. The battery according to claim 2, characterized in that The metal part has a first welding surface and a second welding surface opposite to each other along the first direction; The metal part is located between the pole lug and the second surface, a portion of the pole lug is welded to the first welding surface, and the second welding surface is welded to the second surface.

5. The battery according to claim 2, characterized in that The second surface is provided with a first installation groove, the metal component is embedded in the first installation groove, and the pole ear is welded to the metal component.

6. The battery according to claim 2, characterized in that The second surface is provided with a second mounting groove, the bottom of the second mounting groove is provided with a third mounting groove, the metal component is embedded in the third mounting groove, at least part of the pole ear is located in the second mounting groove and welded to the metal component.

7. The battery according to claim 1, characterized in that The battery further comprises an electronic component, and the electronic component is arranged inside the protection plate.

8. The battery according to claim 1, characterized in that The battery has a first direction, and the protection plate has a first surface and a second surface opposite to each other along the first direction; The first surface faces the top surface, and a fixing groove is provided on the second surface. An electronic component is embedded in the fixing groove.

9. The battery according to claim 1, characterized in that The battery also includes an injection molded part; The injection molded part covers the pole ear, the protection plate and the top seal.

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

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