Battery top cover and single battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery top cover and a single battery. The battery top cover comprises a cover plate sheet and a protection sheet, the cover plate sheet is provided with an explosion-proof hole and a positioning part, and the positioning part is arranged on the upper surface of the cover plate sheet and is arranged on the circumferential edge of the explosion-proof hole. The protection piece covers the explosion-proof hole, and the edge of the protection piece is aligned with the positioning part. The positioning part is arranged on the top surface of the cover plate sheet, so that when the protective sheet is assembled, the protective sheet can be quickly mounted and positioned through the positioning part, whether the mounting position of the protective sheet is accurate or not can be intuitively checked after the protective sheet is assembled, the protective sheet is prevented from deviating and inclining after the protective sheet is assembled, the protective sheet is convenient to mount, and the service life of the protective sheet is prolonged. Other sundries are prevented from entering the explosion-proof hole, the assembly efficiency is improved, and the use performance and safety of the product are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery top cover and single battery. BACKGROUND

[0002] With the development of modern society and the enhancement of people's environmental protection consciousness, more and more equipment selects battery as power source, such as mobile phone, notebook computer, electric tool and electric automobile etc., which provides broad space for the application and development of battery, and the use performance and safety requirement of battery is increasingly high. The battery top cover is the key component of the battery, which is directly related to the reliability, service life and capacity size of the battery, and influences the production and use safety of producers and consumers.

[0003] The battery top cover is usually provided with an explosion-proof valve for exhausting in a thermal runaway state, and the explosion-proof valve protection sheet is a component in the battery top cover, which prevents other sundries from entering above the explosion-proof valve, avoids damaging the explosion-proof valve, and also avoids damaging the explosion-proof valve due to pressure difference caused by temperature change in the production process. However, when assembling the protection sheet, due to the lack of positioning marks, manual patching is easy to cause the protection sheet to be pasted wrong and askew, and accurate judgment of whether the protection sheet is pasted correctly cannot be made during full inspection, which affects the product quality.

[0004] Therefore, there is an urgent need for a battery top cover and single battery to solve the above problems. UTILITY MODEL CONTENTS

[0005] One purpose of the utility model is to provide a battery top cover, which can solve the problem that the protection sheet cannot be accurately positioned during assembly.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A battery top cover is provided, which comprises:

[0008] A cover sheet is provided with an explosion-proof hole and a positioning portion, the positioning portion is arranged on the upper surface of the cover sheet, and the positioning portion is arranged on the circumferential edge of the explosion-proof hole;

[0009] A protection sheet is arranged above the explosion-proof hole, the edge of the protection sheet is aligned with the positioning portion and connected with the cover sheet.

[0010] As an optional solution of the battery top cover, the cover sheet is provided with a plurality of positioning portions, and the plurality of positioning portions are arranged circumferentially around the explosion-proof hole.

[0011] As an optional solution of the battery top cover, the positioning portion is an annular groove, and the annular groove surrounds the explosion-proof hole.

[0012] As an optional solution of the battery top cover, the edge of the protective sheet is provided with a groove structure, and a projection of a side wall of the groove structure on the cover plate sheet is located between the positioning part and the explosion-proof hole.

[0013] As an optional solution of the battery top cover, the protective sheet comprises a protruding part protruding from a bottom surface of the protective sheet, and the positioning part is a positioning groove, and the protruding part is capable of being inserted into the positioning groove.

[0014] As an optional solution of the battery top cover, the battery top cover further comprises an explosion-proof valve connected to a lower surface of the cover plate sheet and covering the explosion-proof hole.

[0015] As an optional solution of the battery top cover, the battery top cover further comprises a pole, and the cover plate sheet is further provided with a pole hole, and the pole is arranged in the pole hole.

[0016] As an optional solution of the battery top cover, the battery top cover further comprises an insulating part located below the cover plate sheet and arranged between part of the pole and the cover plate sheet.

[0017] As an optional solution of the battery top cover, the cover plate sheet is further provided with a liquid injection hole.

[0018] An object of the utility model is to provide a single battery, which can realize accurate positioning of a protective sheet during assembly and ensure the use performance of the single battery.

[0019] To achieve the object, the utility model adopts the following technical scheme.

[0020] The utility model provides a single battery, which comprises a battery top cover, an electric core and a shell.

[0021] The utility model has the advantages of the following:

[0022] The battery top cover provided by the embodiment of the utility model can realize the installation and positioning of the protective sheet through the positioning part on the top surface of the cover plate sheet, can intuitively check whether the installation position of the protective sheet is accurate after assembly, prevents the protective sheet from being deviated and skewed after assembly, is convenient for the installation of the protective sheet, avoids other sundries from entering the explosion-proof hole, improves the assembly efficiency, ensures the use performance and safety of the product, and the process of processing the positioning part is simple, and the complicated process does not affect the production efficiency.

[0023] The embodiment of the utility model further provides a single battery, which comprises an electric core, a shell and the above-mentioned battery top cover, and the protective sheet is accurately positioned, thereby ensuring the safety of the single battery. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the battery top cover provided by the utility model;

[0025] Figure 2 is a partial schematic view of the cover sheet first embodiment of the battery top cover provided by the utility model;

[0026] Figure 3 is a partial schematic view of the cover sheet second embodiment of the battery top cover provided by the utility model;

[0027] Figure 4 is a schematic view of the protective sheet first embodiment of the battery top cover provided by the utility model;

[0028] Figure 5 is a schematic view of the protective sheet second embodiment of the battery top cover provided by the utility model.

[0029] In the drawings:

[0030] 1, cover sheet; 11, explosion-proof hole; 12, positioning portion; 13, pole hole; 14, liquid injection hole;

[0031] 2, protective sheet; 21, recess structure; 22, protruding portion;

[0032] 3, explosion-proof valve;

[0033] 4, pole; 41, lower pole; 42, penetrating portion;

[0034] 5, insulating piece. DETAILED DESCRIPTION

[0035] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0036] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "upper surface" includes that first feature is in second feature directly above and obliquely above, or just indicates that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under surface" includes that first feature is in second feature directly below and obliquely below, or just indicates that first feature horizontal height is less than second feature.

[0038] In the description of the embodiment, the terms "upper", "lower", "right", "left", "horizontal", "vertical", and "radial" refer to the orientation or position shown in the drawings, which are for convenience and simplification of description and operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the utility model. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] As shown in Figures 1 to 5 The battery top cover of the embodiment comprises a cover plate piece 1 and a protective piece 2, the cover plate piece 1 is provided with an explosion-proof hole 11 and a positioning part 12, the positioning part 12 is arranged on the upper surface of the cover plate piece 1, and the positioning part 12 is arranged on the circumferential edge of the explosion-proof hole 11. The protective piece 2 covers the explosion-proof hole 11, the edge of the protective piece 2 is aligned with the positioning part 12 and connected with the cover plate piece 1.

[0040] The battery top cover provided by the embodiment can quickly realize the installation and positioning of the protective piece 2 through the positioning part 12 when the protective piece 2 is assembled, and can intuitively check whether the installation position of the protective piece 2 is accurate after assembly, so as to prevent the protective piece 2 from being deviated and skewed after assembly, facilitate the installation of the protective piece 2, avoid other sundries from entering the explosion-proof hole 11, improve the assembly efficiency, and ensure the use performance and safety of the product. In addition, the process of processing the positioning part 12 is simple, and the production efficiency can be avoided from being affected by complex processes.

[0041] Referring to Figure 2 As shown in the figure, optionally, the cover plate piece 1 is provided with a plurality of positioning parts 12, and the plurality of positioning parts 12 are circumferentially arranged around the explosion-proof hole 11, so as to ensure that the protective piece 2 is accurately positioned in multiple directions. In the embodiment, four positioning parts 12 are arranged, and the four positioning parts 12 are uniformly distributed around the explosion-proof hole 11. In some other embodiments, the positioning part 12 can also be arranged in two, three, six or the like.

[0042] Referring to Figure 3As shown, the positioning part 12 can also be provided as an annular groove, which is arranged around the explosion-proof hole 11, and which facilitates continuous processing of the positioning part 12 and simplifies the production process while ensuring accurate positioning of the protective sheet 2 in multiple directions.

[0043] With reference to Figure 4 As shown, the protective sheet 2 can be provided with a groove structure 21, and a projection of a side wall of the groove structure 21 on the cover sheet 1 is located between the positioning part 12 and the explosion-proof hole 11, that is, the groove structure 21 can be arranged in a staggered manner with the positioning part 12, so that the positioning part 12 can be more intuitively observed when the protective sheet 2 is installed, facilitating positioning of the protective sheet 2. As a preferred embodiment, when the positioning part 12 is provided with a plurality of positioning parts, the groove structure 21 is also provided with a plurality of groove structures corresponding to the positioning parts.

[0044] With reference to Figure 5 As shown, the protective sheet 2 can be provided with a protruding part 22 protruding from a bottom surface of the protective sheet 2, and the positioning part 12 is provided as a positioning groove, and the protruding part 22 can be inserted and fitted with the positioning groove, so that the protective sheet 2 can be directly positioned on the cover sheet 1, and the installation of the protective sheet 2 is more convenient.

[0045] Further, the battery top cover further comprises an explosion-proof valve 3 connected to a lower surface of the cover sheet 1 and covering the explosion-proof hole 11. The explosion-proof valve 3 is provided with a notch, and when the internal pressure of the battery structure is too large, the notch of the explosion-proof valve 3 can be broken due to the small thickness under the action of high-pressure gas, thereby releasing the high-pressure gas and achieving exhaust of the battery structure, ensuring the safety of the battery.

[0046] Further, the battery top cover further comprises a pole 4, and the cover sheet 1 is further provided with a pole hole 13, and the pole 4 is arranged in the pole hole 13. The pole 4 is used to realize connection of the battery cell and an external power consumption device, and to ensure circuit flow. Specifically, the pole 4 comprises a lower pole 41 and a penetrating part 42, the lower pole 41 abuts against the lower surface of the cover sheet 1, and the penetrating part 42 is arranged in the pole hole 13 and connected to the upper surface of the lower pole 41, ensuring stable installation of the pole 4.

[0047] Optionally, the inner wall of the pole hole 13 is provided with a plurality of circular-arc-shaped ribs, so that the inner wall of the pole hole 13 forms a tooth-shaped structure, which can increase the pressing force between the cover sheet 1 and the penetrating part 42 and improve the connection strength of the pole 4 and the cover sheet 1.

[0048] Further, the battery top cover comprises a sealing ring (not shown in the figure), which is sleeved on the penetrating part 42 and located between the penetrating part 42 and the cover sheet 1, and is used to realize insulation and sealing of the penetrating part 42 and the cover sheet 1.

[0049] Further, the battery top cover further comprises an insulating piece 5, which is arranged below the cover plate 1 and between the partial pole 4 and the cover plate 1, in particular, the insulating piece 5 is arranged between the cover plate 1 and the lower pole 41, so as to ensure the insulation between the lower pole 41 and the cover plate 1.

[0050] Further, the cover plate 1 is further provided with a liquid injection hole 14, through which electrolyte can be injected into the battery cell.

[0051] The embodiment further provides a single battery, which comprises a battery cell, a shell and the above battery top cover, the battery cell is placed in the shell, and the battery top cover is tightly connected to the opening of the shell, and the protection piece 2 of the single battery is accurately positioned, so as to ensure the safety of the single battery.

[0052] Obviously, the above embodiment of the utility model is only for the purpose of clear illustration, and is not intended to limit the embodiments of the utility model. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A battery top cover characterized by, The battery top cover comprises: a cover plate (1) provided with an explosion-proof hole (11) and a positioning portion (12) arranged on the upper surface of the cover plate (1), the positioning portion (12) being arranged on the circumferential edge of the explosion-proof hole (11); a protective sheet (2) covering the explosion-proof hole (11), the edge of the protective sheet (2) being aligned with the positioning portion (12) and connected with the cover plate (1).

2. The battery header of claim 1, wherein, The cover plate (1) is provided with a plurality of positioning portions (12) arranged circumferentially around the explosion-proof hole (11).

3. The battery header of claim 1, wherein, The positioning portion (12) is an annular groove surrounding the explosion-proof hole (11).

4. The battery header of claim 1, wherein, The edge of the protective sheet (2) is provided with a groove structure (21), the projection of the sidewall of the groove structure (21) on the cover plate (1) being located between the positioning portion (12) and the explosion-proof hole (11).

5. The battery cover of claim 1, wherein, The protective sheet (2) comprises a protruding portion (22) protruding from the bottom surface of the protective sheet (2), the positioning portion (12) being arranged as a positioning groove, and the protruding portion (22) being capable of being inserted into the positioning groove.

6. The battery header of claim 1, wherein, The battery top cover further comprises an explosion-proof valve (3) connected to the lower surface of the cover plate (1) and covering the explosion-proof hole (11).

7. The battery cover of claim 1, wherein, The battery top cover further comprises a pole (4), and the cover plate (1) is further provided with a pole hole (13), and the pole (4) is arranged in the pole hole (13).

8. The battery header of claim 7, wherein, The battery top cover further comprises an insulating member (5) located below the cover plate (1) and arranged between part of the pole (4) and the cover plate (1).

9. The battery cup of claim 1, wherein, The cover plate (1) is further provided with a liquid injection hole (14).

10. A single cell characterized by, The battery top cover comprises: an electric core, a shell, and the battery top cover according to any one of claims 1-9, the electric core being placed in the shell, and the battery top cover being tightly connected to the opening of the shell.

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