Button cell and electric device

Abstract

The utility model discloses a button cell and a power utilization device, the button cell comprises a preset direction, the button cell comprises a cell main body, the cell main body is provided with a first end face, a second end face and a side wall, and the side wall is connected between the first end face and the second end face; the pole piece comprises a connecting part and an extending part, the connecting part is electrically connected with the first end face or the second end face, and the extending part is connected with the connecting part and is arranged opposite to the side wall; the insulating film is at least attached to the area, opposite to the extension part, of the side wall, the insulating film comprises at least two insulator parts, the insulator parts are distributed in the circumferential direction of the battery main body and are of a split structure, and the outer edges, close to each other, of the adjacent insulator parts are bordered and / or spaced from each other. The insulating film is convenient to paste, wrinkles during pasting are avoided, bubbles can be effectively prevented from being generated in the insulating film pasting process, and it is guaranteed that the insulating film is pasted in place.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a button battery and an electrical device. Background Art

[0002] The distance between the positive and negative electrodes of button batteries is very small and they are not on the same plane. Usually, a lead-out electrode piece needs to be overlapped for easy use. In the process of the electrode piece crossing from one electrode to another, in order to avoid short circuit between the positive and negative electrodes, an insulating film is usually pasted on the side of the button battery. However, during the pasting process of the insulating film, the insulating film is prone to wrinkles, affecting the overall size and appearance of the battery.

[0003] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art and provides a button battery and an electrical device.

[0005] According to one aspect of the present application, the present application provides a button battery, which includes a preset direction, which is parallel to the central axis of the button battery, and the button battery includes: a battery body, which has a first end face, a second end face and a side wall, the first end face and the second end face are away from each other along the preset direction, and the side wall is connected between the first end face and the second end face; a pole piece, including a connecting portion and an extending portion, the connecting portion is electrically connected to the first end face or the second end face, the extending portion is connected to the connecting portion and is arranged opposite to the side wall; and an insulating film, at least attached to the area on the side wall opposite to the extending portion, the insulating film including at least two insulator portions, each of the insulator portions is distributed along the circumference of the battery body and is a separate structure from each other, and the mutually close outer edges of adjacent insulator portions are bordered and / or spaced from each other.

[0006] In one embodiment of the present application, the side wall has a first wall and a second wall arranged along the preset direction, the circumference of the first wall is smaller than the circumference of the second wall; the first wall and the second wall are connected on one side close to each other by a transition wall; and the insulator part is at least attached to the first wall.

[0007] In one embodiment of the present application, the insulator part has a first anti-folding segment, a second anti-folding segment and a third anti-folding segment in sequence, the first anti-folding segment is attached to the first wall, the second anti-folding segment is covered on the transition wall, and the third anti-folding segment is attached to the second wall.

[0008] In an embodiment of the present application, the insulating film further includes a main body portion, and the main body portion is connected to the same side of each of the insulator portions.

[0009] Furthermore, there is a gap between the second anti-folding section and the transition wall.

[0010] In one embodiment of the present application, the pole piece further has a lead-out portion, the lead-out portion is connected to the extension portion, and the lead-out portion extends in a direction away from the side wall.

[0011] In one embodiment of the present application, the distance W between the mutually close outer edges of adjacent insulator parts is 0-2 mm.

[0012] In an embodiment of the present application, the button battery further includes a colloid, and the colloid is located between the side wall and the insulating film.

[0013] Furthermore, the extension portion is arranged in a straight shape and is parallel to the central axis of the button battery.

[0014] Furthermore, the lead-out portion is parallel to the first end surface or the second end surface.

[0015] According to another aspect of the present application, there is provided an electrical device comprising any of the aforementioned button batteries.

[0016] Beneficial effects of the present application: Different from the prior art, the present application provides a button battery and an electric device. The button battery forms insulation between the pole piece and the battery body by providing an insulating film on the side wall. In addition, at least two insulator parts are separately provided to avoid wrinkles of the insulating film when pasting.

[0017] In other words, by bordering and / or spacing the outer edges of adjacent insulator parts, the insulating film is easily pasted and wrinkles are avoided during pasting. In addition, due to the arrangement of the insulator parts, bubbles can be effectively avoided during the pasting process of the insulating film, ensuring that the insulating film is adhered in place and prevented from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of a button battery provided in an embodiment of the present application.

[0020] Figure 2 yes Figure 1 A left side view of an embodiment.

[0021] Figure 3 yes Figure 2 An enlarged view of an embodiment at A in the middle.

[0022] Figure 4 It is a schematic diagram of an insulating film provided in an embodiment of the present application.

[0023] Figure 5 It is a schematic diagram of another button battery provided in an embodiment of the present application.

[0024] In the figure:

[0025] 10. Battery body; 101. First end face; 102. Second end face; 103. Side wall; 1031. First wall; 1032. Second wall; 1033. Transition wall; 11. Pole piece; 111. Connecting portion; 112. Extending portion; 113. Lead-out portion; 12. Insulating film; 121. Insulator portion; 1211. First anti-folding section; 1212. Second anti-folding section; 1213. Third anti-folding section; 122. Main body. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0027] 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, an electrical connection, or mutual communication; 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] A button battery and an electrical device in the present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a particular embodiment, please refer to the relevant description of other embodiments.

[0029] In the prior art, during the pasting process of the insulating film, bubbles may appear because the insulating film is a whole large-area film, resulting in the insulating film not being pasted properly, not being pasted firmly, and being prone to falling off, thereby causing a short circuit in the battery; and when pasting on irregular side walls, the insulating film will produce wrinkles, affecting the overall outer diameter of the battery and having poor insulation performance.

[0030] In view of this, the embodiments of the present application provide a button battery and an electrical device, which can solve the technical problem in the prior art that bubbles and wrinkles are easily generated during the pasting process of the insulating film, which are described in detail below.

[0031] See also Figure 1 and Figure 2 , Figure 1 is a schematic diagram of a button battery provided in an embodiment of the present application, Figure 2 yes Figure 1 A left side view of an embodiment.

[0032] In one embodiment, the button battery has a preset direction (such as Figure 2 The preset direction is parallel to the central axis of the button battery (as shown in the middle direction Y, the same below). Figure 1 As shown in the central axis X, the same below), the button battery includes a battery body 10, a pole piece 11 and an insulating film 12. In this embodiment, the battery body 10 has a first end face 101, a second end face 102 and a side wall 103. The first end face 101 and the second end face 102 are away from each other along the preset direction, and the side wall 103 is connected between the first end face 101 and the second end face 102; the pole piece 11 includes a connecting portion 111 and an extending portion 112. The connecting portion 111 is electrically connected to the first end face 101 or the second end face 102, and the extending portion 112 is connected to the connecting portion 111 and is arranged opposite to the side wall 103.

[0033] It should be noted that, in the present embodiment, the connection portion 111 is electrically connected to the first end face 101, and in other embodiments, the connection portion 111 may be electrically connected to the second end face 102, or the first end face 101 and the second end face 102 may each be connected with a connection portion 111, that is, two pole pieces 11 are provided, depending on the specific design of the button battery, and the connection portion 111 may be connected by welding or other forms of connection, but is not limited to this, and will not be repeated here.

[0034] Furthermore, in the present embodiment, the insulating film 12 is at least attached to the area on the side wall 103 opposite to the extension portion 112 to ensure insulation between the extension portion 112 and the battery body 10, and the pasting size of the insulating film 12 is determined according to actual insulation requirements; and the insulating film 12 includes at least two insulator portions 121. In the present embodiment, a total of three insulator portions 121 are provided, and each insulator portion 121 is distributed along the circumference of the battery body 10 and is a separate structure from each other. The separate structure facilitates the pasting of the insulating film 12 and reduces the area of ​​the insulating film 12 that needs to be pasted each time, which facilitates operation and can reduce bubbles, thereby ensuring that the insulating film 12 is adhered in place and avoiding the insulating film 12 from falling off; at the same time, wrinkles on the insulating film 12 are avoided during pasting, which affects the appearance of the button battery and the overall size of the button battery.

[0035] At the same time, when the insulator part 121 is pasted, the outer edges of adjacent insulator parts 121 that are close to each other are bordered or spaced from each other. Whether the adjacent outer edges are bordered or spaced is determined according to the circumference of the side wall 103 of the button battery. When they are bordered, the gap between the outer edges can be reduced, making the appearance of the button battery beautiful and smooth, while also avoiding wrinkles.

[0036] Please continue reading Figure 2 .

[0037] In one embodiment, the side wall 103 has a first wall 1031 and a second wall 1032 arranged along the preset direction. In this embodiment, the circumference of the first wall 1031 is smaller than the circumference of the second wall 1032, and the first wall 1031 and the second wall 1032 are connected by a transition wall 1033 on the side close to each other, that is, the side wall 103 is an irregular surface as a whole. When the insulating film 12 is pasted on the irregular surface, wrinkles are more likely to occur. The arrangement of the insulator portion 121 can well solve the wrinkle problem. It should be noted that The insulator portion 121 is at least attached to the first wall 1031, so that when the insulating film 12 is attached and transitions from the second wall 1032 to the first wall 1031, the circumference of the first wall 1031 is reduced compared to the second wall 1032, so that the insulating film 12 shrinks when attached to the first wall 1031, that is, there is not enough space for the insulating film 12 to be attached, and wrinkles will occur; the insulator portion 121 attached to the first wall 1031 can well solve the wrinkle problem caused by the irregular side wall 103.

[0038] It should be noted that the insulating film 12 also includes a main body 122, which is connected to the same side of each insulator portion 121. The insulator portions 121 that are separately arranged are connected into a whole through the main body 122. In this embodiment, the main body 122 is attached to the above-mentioned second wall 1032, and the insulator portion 121 is at least attached to the first wall 1031, which facilitates the sticking of the insulating film 12 as a whole and facilitates operation.

[0039] See also Figure 3 and Figure 4 , Figure 3 yes Figure 2 A is an enlarged view of an embodiment, Figure 4 It is a schematic diagram of an insulating film provided in an embodiment of the present application.

[0040] In one embodiment, the insulator portion 121 has a first anti-folding segment 1211, a second anti-folding segment 1212 and a third anti-folding segment 1213 in sequence, the first anti-folding segment 1211 is attached to the first wall 1031, the second anti-folding segment 1212 is covered on the transition wall 1033, and the third anti-folding segment 1213 is attached to the second wall 1032; when used on an irregular surface, the second anti-folding segment 1212 is provided to effectively avoid wrinkles at the irregular part (transition wall 1033), the first anti-folding segment 1211 provides a dislocation space for the insulating film 12 to avoid wrinkles, and when the third anti-folding segment 1213 is attached to the first anti-folding segment 1211, it will involve the insulating film 12 under the second anti-folding segment 1212, and the third anti-folding segment 1213 is provided to provide a clearance space to avoid wrinkles.

[0041] It should be noted that, in this embodiment, the insulating film 12 is attached from the second wall 1032 with a larger circumference to the first wall 1031 with a smaller circumference. Conversely, in other embodiments, when the circumference of the first wall 1031 is greater than the circumference of the second wall 1032, the above-mentioned settings of the first anti-folding segment 1211, the second anti-folding segment 1212 and the third anti-folding segment 1213 are still applicable and wrinkles can still be avoided. At this time, the outer edges of adjacent insulator parts 121 that are close to each other are spaced from each other, which will not be repeated here.

[0042] Please continue reading Figure 2 .

[0043] In one embodiment, there is a gap between the second anti-pleat segment 1212 and the transition wall 1033, that is, the second anti-pleat segment 1212 is not attached according to the contour of the transition wall 1033. Figure 2It can be seen from the edge of the middle insulating film 12 that in this embodiment, the second anti-folding section 1212 is obliquely arranged above the transition portion perpendicular to the predetermined direction, which avoids wrinkles and improves the attachment efficiency; and the insulating film 12 does not need to be excessively bent, avoiding excessive stress at the crease, which may cause the insulating film 12 to be damaged and cause a short circuit.

[0044] It should be noted that the transition portion in this embodiment is parallel to the first end face 101 or the second end face 102 , and may be arranged in other forms in other embodiments, such as being inclined, which will not be described in detail here.

[0045] Please continue reading Figure 1 and Figure 2 .

[0046] In one embodiment, the above-mentioned pole piece 11 also includes a lead-out portion 113, which is connected to the above-mentioned extension portion 112, and the lead-out portion 113 extends in a direction away from the above-mentioned side wall 103. In this embodiment, the above-mentioned lead-out portion 113 is parallel to the above-mentioned first end face 101 or the second end face 102. By providing the lead-out portion 113, the connection between the component and the pole piece 11 is facilitated, and the operation and use are convenient.

[0047] Furthermore, the distance W between the outer edges of adjacent insulator parts 121 that are close to each other is 0-2 mm. If it is too large, it is not conducive to the safe use of the insulating film 12. If the gap is too large, the insulating film 12 is easily torn during operation. In this embodiment, the distance W is 2 mm. When the insulator parts 121 are pasted, the insulator parts 121 are not easy to stick to each other, which affects the pasting efficiency and pasting quality. It is convenient for the insulating film 12 to be pasted while avoiding wrinkles.

[0048] Specifically, when the insulating film 12 is pasted, a colloid is provided between the side wall 103 and the insulating film 12 for pasting, which has low cost and reliable pasting.

[0049] Please continue reading Figure 2 In this embodiment, the extension portion 112 is arranged in a straight shape and is parallel to the central axis of the button battery. The extension portion 112 is in contact with one of the first wall 1031 and the second wall 1032, and is spaced apart from the other, thereby avoiding the extension portion 112 from abutting against the second anti-folding section 1212, thereby avoiding the extension portion 112 from wearing the insulating film 12 there.

[0050] See also Figure 5 , Figure 5 It is a schematic diagram of another button battery provided in an embodiment of the present application.

[0051] In this embodiment, the side wall 103 is a regular curved surface. However, due to the large pasting area of ​​the insulating film 12, bubbles are easily generated in the middle of the insulating film 12 during pasting, which affects the adhesion effect of the insulating film 12. Through the setting of the insulator part 121, the middle part of the insulating film 12 is divided into multiple small surfaces. In this embodiment, two main bodies 122 are provided, which are respectively connected to the two sides of the insulator part 121, which is convenient for pasting and avoids the generation of bubbles and wrinkles. It will not be repeated here.

[0052] On the other hand, the present application also includes an electrical device, comprising any of the aforementioned button batteries.

[0053] By adopting the technical solution provided in the embodiment of the present application, the outer edges of adjacent insulator parts are bordered and / or spaced from each other, which facilitates the pasting of the insulating film and avoids wrinkles during pasting. In addition, due to the setting of the insulator parts, it is possible to effectively avoid the generation of bubbles in the process of pasting the insulating film, thereby ensuring that the insulating film is adhered in place and avoids falling off.

[0054] In the various embodiments of the present application, if there is no special explanation and logical conflict, the terms or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships. In the present application, "at least one" means one or more, and "more" means two or more.

[0055] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

[0056] The above is a detailed introduction to a button battery and an electrical device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand a button battery and its core idea of ​​the present application. At the same time, for a person skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A button battery, characterized in that: The button battery includes a preset direction, the preset direction is parallel to the central axis of the button battery, and the button battery includes: A battery body (10), the battery body (10) comprising a first end face (101), a second end face (102) and a side wall (103), the first end face (101) and the second end face (102) being away from each other along the preset direction, and the side wall (103) being connected between the first end face (101) and the second end face (102); A pole piece (11), comprising a connecting portion (111) and an extending portion (112), wherein the connecting portion (111) is electrically connected to the first end surface (101) or the second end surface (102), and the extending portion (112) is connected to the connecting portion (111) and is arranged opposite to the side wall (103); and An insulating film (12) is at least attached to a region of the side wall (103) opposite to the extension portion (112), wherein the insulating film (12) comprises at least two insulator portions (121), each of the insulator portions (121) being distributed along the circumference of the battery body (10) and being separate structures from each other, and mutually adjacent outer edges of adjacent insulator portions (121) being bordered and / or spaced from each other.

2. The button battery according to claim 1, characterized in that: The side wall (103) comprises a first wall (1031) and a second wall (1032) arranged along the preset direction, the perimeter of the first wall (1031) being smaller than the perimeter of the second wall (1032); the first wall (1031) and the second wall (1032) being connected to each other on one side by a transition wall (1033); and the insulator portion (121) is at least attached to the first wall (1031).

3. The button battery according to claim 2, characterized in that: The insulator part (121) comprises a first anti-folding section (1211), a second anti-folding section (1212) and a third anti-folding section (1213) in sequence, wherein the first anti-folding section (1211) is attached to the first wall (1031), the second anti-folding section (1212) is covered on the transition wall (1033), and the third anti-folding section (1213) is attached to the second wall (1032).

4. The button battery according to claim 1, characterized in that: The insulating film (12) further comprises a main body portion (122), wherein the main body portion (122) is connected to the same side of each of the insulator portions (121).

5. The button battery according to claim 3, characterized in that: There is a gap between the second anti-fold section (1212) and the transition wall (1033).

6. The button battery according to claim 1, characterized in that: The pole piece (11) further comprises a lead-out portion (113), the lead-out portion (113) is connected to the extension portion (112), and the lead-out portion (113) extends in a direction away from the side wall (103).

7. The button battery according to claim 1, characterized in that: The distance W between mutually adjacent outer edges of adjacent insulator parts (121) is 0-2 mm.

8. The button battery according to claim 1, characterized in that: The button cell further comprises a colloid, wherein the colloid is located between the side wall (103) and the insulating film (12).

9. The button battery according to claim 6, characterized in that: The extension portion (112) is arranged in a straight shape and is parallel to the central axis of the button battery.

10. The button battery according to claim 6, characterized in that: The lead-out portion (113) is parallel to the first end surface (101) or the second end surface (102).

11. An electrical device, characterized in that: Comprising a button battery as claimed in any one of claims 1 to 10.

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