Battery and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery and an electric device, the battery comprises a shell, a top cover, a battery cell, an electric connecting piece and an insulating plate; an opening is formed in the shell, the top cover seals the opening, the battery cell, the electric connecting piece and the insulating plate are all accommodated in the shell from the opening, a pole is arranged on the top cover, a tab is led out of the battery cell, the tab is connected with the electric connecting piece, and the electric connecting piece is connected with the pole; the tab is in a bent state and is positioned below the first side part, the electric connecting piece comprises a main body and a supporting structure which is convexly arranged towards the battery cell relative to the main body, and the main body is at least provided with the supporting structure below the second side part; the insulating plate has insulativity, is positioned between the electric connecting piece and the battery cell and is used for insulating and separating the electric connecting piece and the battery cell; the battery mainly solves the problems that the top cover is low in shell entering efficiency and easy to incline in the manufacturing process of the current battery with only one side internally provided with the tabs.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery and an electrical device using the same. Background Art

[0002] At present, in order to achieve the purpose of extreme simplification, only one battery cell is placed in the battery case. After the single-rolled battery cell is inserted into the case, there is only one side with a bent tab, and the other side opposite to the tab is suspended. When the subsequent top cover is inserted into the case and subsequent welding is carried out, since there is only the tab of the battery cell on one side of the top cover and there is no tab support on the other side of the top cover, there is a problem of uneven force when the top cover is inserted into the case, resulting in the problem that the top cover is prone to tilt and unevenness after being inserted into the case, and further resulting in the problems of slow insertion efficiency of the top cover into the case and low yield of subsequent welding of the top cover to the case. Summary of the Utility Model

[0003] The utility model provides a battery and an electrical device using the same, mainly solving the technical problems of slow insertion efficiency of the top cover into the case and easy tilt and unevenness during the manufacturing process of the battery with only one-sided tabs inside at present.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A battery, comprising a case, a top cover, a battery cell, an electrical connector and an insulating plate;

[0006] One end of the case is provided with an opening, the top cover seals the opening, the battery cell, the electrical connector and the insulating plate are all received in the case through the opening, a pole column is provided on the top cover, the top cover includes a first side portion and a second side portion oppositely arranged along the width direction, a tab is led out from the battery cell, the tab is connected to the electrical connector, the electrical connector is connected to the pole column, and the tab is in a bent state and is located below the first side portion;

[0007] The electrical connector includes a main body for connecting the tab and a support structure protruding towards the battery cell relative to the main body, and the support structure is provided at least below the second side portion of the main body;

[0008] The insulating plate has insulation property, and is located between the electrical connector and the battery cell and is used for insulating and separating the electrical connector from the battery cell.

[0009] In one of the technical solutions, the support structure includes a first bending portion, the first bending portion and the main body are integrally bent and formed, and the first bending portion is provided below the second side portion.

[0010] In one of the technical solutions, the support structure further includes a second bent portion bent relative to the first bent portion and a third bent portion bent relative to the second bent portion, and the third bent portion is disposed on a side opposite to the first bent portion, and the third bent portion extends away from the insulating plate and approaches the main body.

[0011] In one of the technical solutions, a through opening is provided on the second bent portion, a first notch communicating with the opening is provided on the third bent portion, and the tab is inserted into the first notch.

[0012] In one of the technical solutions, the support structure further includes a fourth bent portion bent relative to the main body, and the fourth bent portion is disposed below the first side portion.

[0013] In one of the technical solutions, a second notch is provided on the fourth bent portion, and the tab is inserted into the second notch.

[0014] In one of the technical solutions, the support structure includes a boss structure formed from the main body toward the insulating plate, and the tab is connected to the main body at a position avoiding the boss structure.

[0015] In one of the technical solutions, the battery further includes an insulating pad, and the insulating pad is disposed at the bottom of the top cover and insulates and separates the top cover and the electrical connector;

[0016] The insulating pad and the insulating plate are an integral structure, and the insulating plate can be turned over 180° relative to the insulating pad.

[0017] In one of the technical solutions, two pole columns are provided on the top cover, the battery includes two electrical connectors, one of the electrical connectors is connected to the tab with a positive polarity on the battery cell and is connected to one of the pole columns, and the other electrical connector is connected to the tab with a negative polarity on the battery cell and is connected to the other pole column;

[0018] The insulating pad simultaneously separates the top cover and the two electrical connectors, and two insulating plates are bent on the insulating pad, one of the insulating plates is used to support one of the electrical connectors, and the other insulating plate is used to support the other electrical connector.

[0019] In one of the technical solutions, when the insulating plate is laid flat and unfolded relative to the insulating pad, the insulating plate extends along the length direction of the top cover relative to the insulating pad.

[0020] The present application further provides an electrical device, which includes the battery described in the above technical solution

[0021] Compared with the prior art, the battery provided by the present utility model has at least the following beneficial effects:

[0022] In this solution, the existing electrical connector is designed to include a support structure protruding towards the battery cell, and the support structure is at least arranged below the second side part of the top cover. In addition, to prevent the electrical connector from contacting the top surface of the battery cell and causing a short circuit, an insulating plate is also arranged between the electrical connector and the battery cell in this solution. The insulating plate in this solution supports the top cover by supporting the electrical connector, thereby solving the problem of the top cover being tilted and uneven when entering the shell and being able to improve the efficiency of the top cover entering the shell and the production efficiency of the battery. More specifically, compared with the solution of directly thickening the electrical connector to abut against the insulating plate, the weight of the electrical connector in this solution hardly changes, so that the battery can maintain a relatively high energy density. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of a battery provided by an embodiment of the present application;

[0025] Figure 2 is Figure 1 a cross-sectional view taken along line A-A in

[0026] Figure 3 is Figure 2 a partial enlarged view at B in

[0027] Figure 4 It is an exploded structural diagram of a battery provided by an embodiment of the present application;

[0028] Figure 5 It is a schematic structural diagram of the first electrical connector provided by an embodiment of the present application;

[0029] Figure 6 It is a schematic structural diagram of the second electrical connector provided by an embodiment of the present application;

[0030] Figure 7 It is a schematic structural diagram of the third electrical connector provided by an embodiment of the present application;

[0031] Figure 8 It is a schematic structural diagram of the fourth electrical connector provided by an embodiment of the present application.

[0032] Reference numerals:

[0033] 1. Housing; 11. Opening; 2. Top cover; 21. Terminal post; 22. First side portion; 23. Second side portion; 3. Battery cell; 31. Tab.

[0034] 4. Electrical connection member; 41. Main body; 42. Support structure; 421. First bent portion; 422. Second bent portion; 4221. Second opening; 423. Third bent portion; 4231. First notch; 424. Fourth bent portion; 4241. Second notch; 425. Boss structure.

[0035] 5. Insulating plate; 6. Insulating pad. Detailed implementation manners

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0040] In order to make the purpose, technical solution and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0041] Please refer to Figures 1 to 4, an embodiment of the present utility model provides a battery, mainly including a housing 1, a top cover 2, an electric core 3 and an electrical connector 4. Among them, an opening 11 is provided on the housing 1, and the electric core 3, the electrical connector 4 and an insulating plate 5 are all received into the housing 1 from the opening 11. The top cover 2 is used to seal the opening 11. Among them, a pole post 21 is provided on the top cover 2. The electric core 3 is preferably a wound-type electric core. After winding, the electric core 3 leads out a tab 31. The tab 31 has a positive or negative electrical property. When assembling the battery, the tab 31 on the electric core 3 can be pre-welded to the electrical connector 4, and the pole post 21 can be pre-fixed on the top cover 2, and then the electrical connector 4 and the pole post 21 are welded together, so that the electrodes of the electric core 3 can be led out to the pole post 21 through the electrical connector 4. Specifically, the top cover 2 includes a first side portion 22 and a second side portion 23 that are oppositely arranged in the width direction. For the single-wound electric core 3, most of the tabs 31 led out by the single-wound electric core 3 are bent to one side and finally located below the first side portion 22. At this time, the bent tab 31 has a certain supporting effect on the first side portion 22 of the top cover 2. The second side portion 23 of the top cover 2 in the prior art is suspended and not supported. Therefore, when the top cover 2 is inserted into the housing 1 along the opening 11, the probability of tilting and unevenness is relatively high, and thus the insertion efficiency of the top cover 2 into the housing is relatively low.

[0042] Please refer to Figures 1 to 5 , the electrical connector 4 specifically includes a main body 41 and a support structure 42 integrally formed. Among them, the main body 41 is used for connecting the tab 31 (the connection method between the tab 31 and the main body 41 includes but is not limited to welding and riveting), and the main body 41 is also used for connecting with the pole post 21 (the connection method between the pole post 21 and the main body 41 includes but is not limited to welding and riveting). The support structure 42 protrudes from the main body 41 towards the electric core 3. Moreover, the main body 41 is provided with a support structure 42 at least below the second side portion 23 (that is, the side of the top cover 2 not supported by the tab 31). Based on the structural design of the electrical connector 4, the battery of this embodiment further includes an insulating plate 5. This insulating plate 5 is disposed between the electrical connector 4 and the electric core 3, and the insulating plate 5 has insulation properties, so that the insulating plate 5 can insulate and separate the electrical connector 4 and the electric core 3, and the insulating plate 5 can support the top cover 2 by supporting the electrical connector 4, thereby solving the problem of tilting and unevenness of the top cover 2 when inserted into the housing and improving the insertion efficiency of the top cover 2 into the housing, and improving the production efficiency of the battery. More specifically, compared with the scheme of directly thickening the electrical connector 4 to abut against the insulating plate 5, the weight of the electrical connector 4 in this scheme hardly changes, so that the battery can maintain a relatively high energy density.

[0043] Among them, the support structure 42 can be such as Figure 5The first bending portion 421 shown, the first bending portion 421 and the main body 41 are integrally bent and formed structures, and the first bending portion 421 is arranged below the second side portion 23, thereby reducing the risk of the top cover 2 tilting and being uneven when entering the shell, and further improving the efficiency of the top cover 2 entering the shell.

[0044] Among them, the support structure 42 can also be as Figure 6 shown, including a second bending portion 422 that continues to bend relative to the first bending portion 421 and a third bending portion 423 that bends relative to the second bending portion 422. The third bending portion 423 bends and extends away from the insulating plate 5 and gradually approaches the main body 41, and the third bending portion 423 is arranged on the opposite side of the first bending portion 421. Through such a design, both sides of the electrical connector 4 can be supported by the insulating plate 5, improving the stability of the electrical connector 4 being supported by the insulating plate 5, thereby improving the stability of the top cover 2 being supported by the insulating plate 5, and further reliably solving the problem of the top cover 2 tilting and being uneven when entering the shell and being able to significantly improve the efficiency of the top cover 2 entering the shell. In addition, based on the electrical connector 4 designed with this structure, the electrical connector 4 preferably has a through opening 4221 provided on the second bending portion 422, and a first notch 4231 communicated with the opening 4221 is provided on the third bending portion 423. The tab 31 of the battery cell 3 passes through the first notch 4231 and is welded to the main body 41. By providing the opening 4221, it is convenient to weld the tab 31 to the main body 41. Through such a design, the structure of the electrical connector 4 is more compact and reasonable.

[0045] Among them, the support structure 42 can also be as Figure 7 shown, and further includes a fourth bending portion 424 that bends relative to the main body 41, and the fourth bending portion 424 is designed to be disposed opposite to the first bending portion 421, that is, the fourth bending portion 424 is arranged below the first side portion 22. At this time, the purpose of both sides of the entire electrical connector 4 being supported by the insulating plate 5 can also be achieved, thereby also being able to improve the stability of the electrical connector 4 being supported by the insulating plate 5, and further also being able to improve the stability of the top cover 2 being supported by the insulating plate 5, that is, this solution can also reliably solve the problem of the top cover 2 tilting and being uneven when entering the shell and being able to significantly improve the efficiency of the top cover 2 entering the shell. In addition, based on the electrical connector 4 designed with this structure, the electrical connector 4 preferably has a second notch 4241 provided on the fourth bending portion 424. The tab 31 of the battery cell 3 passes through the second notch 4241 and is welded to the main body 41. By providing the second notch 4241, the structure of the electrical connector 4 is more compact and reasonable.

[0046] Among them, the support structure 42 can also be as Figure 8As shown, it includes a boss structure 425 formed by stamping the main body 41 towards the insulating plate 5. During welding, the tab 31 needs to be welded to the main body 41 at a position avoiding the boss structure 425. In other words, the boss structure 425 needs to be designed at a position avoiding the tab 31. By providing the boss structure 425, the electrical connector 4 can have sufficient area to contact the insulating plate 5. At this time, the stability of the electrical connector 4 supported by the insulating plate 5 can also be improved, and further the stability of the top cover 2 supported by the insulating plate 5 can also be improved. That is, this solution can also reliably solve the problem of the top cover 2 being tilted and uneven when entering the housing, and thereby can greatly improve the efficiency of the top cover 2 entering the housing.

[0047] Please refer to Figures 1 to 4 , the battery of this embodiment further includes an insulating pad 6. The insulating pad 6 is arranged at the bottom of the top cover 2. The insulating pad 6 can be formed on the top of the top cover 2 by injection molding in a mold, or the insulating pad 6 can be adhered to the bottom of the top cover 2 by gluing, or the insulating pad 6 can be clamped to the bottom of the top cover 2 by a pole, or the insulating pad 6 is only located on the top of the top cover 2 without a connection relationship with the top cover 2. The insulating pad 6 is mainly used for insulating and separating the top cover 2 and the electrical connector 4 to avoid the problem that the electrical connector 4 and the bottom surface of the top cover 2 are in direct contact, which is likely to cause a short circuit. When the top surface of the top cover 2 and the top surface of the battery cell 3 are relatively close, the insulating pad 6 can also play a role in separating the top cover 2 and the battery cell 3 to avoid the problem that the top surface of the battery cell 3 and the bottom surface of the top cover 2 are in direct contact, which is likely to cause a short circuit. More specifically, the insulating pad 6 is preferably designed as an integral structure with the above-mentioned insulating plate 5, and the insulating plate 5 can be folded 180° relative to the insulating pad 6. When the insulating plate 5 is laid flat relative to the insulating pad 6, it is convenient to weld the electrical connector 4 already welded to the tab 31 to the top of the pole 21. After the electrical connector 4 is welded, the insulating plate 5 can be folded 180° relative to the insulating pad 6, so that the insulating plate 5 can be bent below the electrical connector 4 to separate the electrical connector 4 and the battery cell 3, thereby achieving the purpose that the top cover 2 can be stably supported by the insulating plate 5, and the top surface of the battery cell 3 will not be in direct contact with the electrical connector 4. By designing the insulating plate 5 and the insulating pad 6 as an integral structure and adopting the design that the insulating plate 5 can be folded to be located between the electrical connector 4 and the battery cell 3, the assembly process of the battery can be simplified, thereby improving the assembly efficiency of the battery.

[0048] Please refer to again Figures 1 to 4In this embodiment, the top cover 2 is preferably provided with two poles 21, and correspondingly, the battery includes two electrical connectors 4, one of which is welded to the positive pole lug 31 on the battery cell 3 and to one of the poles 21, and the other electrical connector 4 is welded to the negative pole lug 31 on the battery cell 3 and to the other pole 21, so that one of the two poles 21 is a positive pole and the other is a negative pole. Based on the battery with this structural design, the insulating pad 6 is preferably designed to separate the top cover 2 and the two electrical connectors 4 at the same time to ensure that the two electrical connectors 4 will not directly contact the bottom surface of the top cover 2. In addition, two insulating plates 5 are preferably bent on the insulating pad 6, and the two insulating plates 5 are arranged at opposite ends in the length direction of the insulating pad 6, one of the insulating plates 5 is used to support one of the electrical connectors 4, and the other insulating plate 5 is used to support the other electrical connector 4. By providing two insulating plates 5 and designing each insulating plate 5 to provide support for the corresponding electrical connector 4 separately, the length of the insulating plate 5 does not need to be too long, and it is also convenient for the insulating plate 5 to be turned over to between the electrical connector 4 and the battery cell 3 after being folded 180° in a limited space. Among them, the insulating plate 5 is preferably fixed to the insulating pad 6 by a snap connection after being folded 180° relative to the insulating pad 6, that is, one of the insulating plate 5 and the insulating pad 6 is provided with a male buckle, and the other is provided with a female buckle. Through such a design, the problem of the top cover 2 bouncing upward due to the large internal stress at the folding part of the insulating plate 5 can be solved, that is, it is ensured that the top cover 2 will not be tilted or uneven under the support of the insulating plate 5.

[0049] In addition, when the insulating plate 5 is flatly spread out relative to the insulating pad 6, the insulating plate 5 preferably extends along the length direction of the top cover 2 relative to the insulating pad 6. In other embodiments, when the insulating plate 5 is flatly spread out relative to the insulating pad 6, the insulating plate 5 can also be designed to extend along the width direction of the top cover 2 relative to the insulating pad 6.

[0050] This embodiment also provides an electrical device, which includes the above-mentioned battery, so the electrical device also has the advantage of being able to be produced with high efficiency and high quality.

[0051] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for the purpose of explaining the principles of the present invention, and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementation methods of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A battery, characterized in that, It includes a housing (1), a top cover (2), an electric core (3), an electrical connector (4) and an insulating plate (5); One end of the housing (1) is provided with an opening (11), the top cover (2) seals the opening (11), the electric core (3), the electrical connector (4) and the insulating plate (5) are all accommodated in the housing (1), a pole post (21) is provided on the top cover (2), the top cover (2) includes a first side portion (22) and a second side portion (23) oppositely arranged along the width direction, a tab (31) is led out from the electric core (3), the tab (31) is connected to the electrical connector (4), the electrical connector (4) is connected to the pole post (21), and the tab (31) is in a bent state and is located below the first side portion (22); The electrical connector (4) includes a main body (41) for connecting the tab (31) and a support structure (42) protruding towards the electric core (3) relative to the main body (41), and the support structure (42) is provided at least below the second side portion (23) of the main body (41); The insulating plate (5) has insulation property, the insulating plate (5) is located between the electrical connector (4) and the electric core (3) and is used for insulating and separating the electrical connector (4) from the electric core (3).

2. The battery according to claim 1, characterized in that, The support structure (42) includes a first bent portion (421), the first bent portion (421) and the main body (41) are integrally bent and formed, and the first bent portion (421) is arranged below the second side portion (23).

3. The battery according to claim 2, wherein, The support structure (42) further includes a second bent portion (422) bent relative to the first bent portion (421) and a third bent portion (423) bent relative to the second bent portion (422), and the third bent portion (423) is arranged on the side opposite to the first bent portion (421), and the third bent portion (423) extends away from the insulating plate (5) and approaches the main body (41).

4. The battery according to claim 3, wherein A through second opening (4221) is provided on the second bent portion (422), a first notch (4231) communicating with the second opening (4221) is provided on the third bent portion (423), and the tab (31) passes through the first notch (4231).

5. The battery according to claim 2, wherein The support structure (42) further includes a fourth bent portion (424) bent relative to the main body (41), and the fourth bent portion (424) is arranged below the first side portion (22).

6. The battery according to claim 5, characterized in that, A second notch (4241) is provided on the fourth bent portion (424), and the tab (31) passes through the second notch (4241).

7. The battery according to claim 1, characterized in that, The support structure (42) includes a boss structure (425) formed from the main body (41) towards the insulating plate (5), and the tab (31) is connected to the main body (41) at a position avoiding the boss structure (425).

8. The battery according to any one of claims 1 to 7, characterized in that, The battery further includes an insulating pad (6), which is disposed at the bottom of the top cover (2) and insulatively separates the top cover (2) and the electrical connector (4); The insulating pad (6) and the insulating plate (5) are of an integral structure, and the insulating plate (5) can be folded 180° relative to the insulating pad (6).

9. The battery according to claim 8, characterized in that, Two pole columns (21) are provided on the top cover (2), and the battery includes two electrical connectors (4). One of the electrical connectors (4) is connected to the pole tab (31) with a positive polarity on the battery cell (3) and is connected to one of the pole columns (21), and the other electrical connector (4) is connected to the pole tab (31) with a negative polarity on the battery cell (3) and is connected to the other pole column (21); The insulating pad (6) simultaneously separates the top cover (2) from the two electrical connectors (4). Two insulating plates (5) are bent on the insulating pad (6). One of the insulating plates (5) is used to support one of the electrical connectors (4), and the other insulating plate (5) is used to support the other electrical connector (4).

10. An electrical device, characterized in that, A battery according to any one of claims 1 to 9 is included.

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