CN211045581U - Button soft package lithium battery - Google Patents
Button soft package lithium battery Download PDFInfo
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- CN211045581U CN211045581U CN201922302655.5U CN201922302655U CN211045581U CN 211045581 U CN211045581 U CN 211045581U CN 201922302655 U CN201922302655 U CN 201922302655U CN 211045581 U CN211045581 U CN 211045581U
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Abstract
The utility model provides a button soft package lithium battery, which comprises a soft package battery core and a shell, wherein the soft package battery core comprises a battery core body, a positive plate and a negative plate, and the positive plate and the negative plate are used for leading out current from the battery core body; the shell comprises a positive electrode shell, a negative electrode shell and an insulating sheet, and both the positive electrode shell and the negative electrode shell have conductivity; the positive electrode shell is electrically connected with the positive plate, and the negative electrode shell is electrically connected with the negative plate; the upper end and the lower end of the battery cell body are respectively fixed in the positive electrode shell and the negative electrode shell in an insulating mode, and the insulating sheet is arranged between the positive electrode shell and the negative electrode shell to insulate the positive electrode shell from the negative electrode shell. The utility model provides a soft packet of lithium cell of button is fixed in positive pole shell and negative pole shell with the upper and lower both ends of electric core body insulating respectively in, has reduced the influence of the contour dimension change of soft packet of electric core to the contour dimension of soft packet of lithium cell of button to reduce the contour dimension tolerance of soft packet of lithium cell of button, still improved the stability of electric core body installation in the casing.
Description
Technical Field
The utility model belongs to the technical field of the battery, more specifically say, relate to a soft packet of lithium cell of button.
Background
The button cell is a cell with the overall dimension like a small button, generally has a larger diameter and a thinner thickness, and is widely applied to products such as computer mainboards, electronic watches, electronic dictionaries, electronic scales, remote controllers, electric toys and the like.
The soft packet of lithium cell of button that appears in the market at present only has soft packet of electricity core, because the structure and the material characteristic of soft packet of electricity core self lead to the soft packet of lithium cell of present button to take place deformation very easily, and overall dimension is hardly unified for the external dimension tolerance of the soft packet of lithium cell of button is great, has brought inconvenience for the user uses the soft packet of lithium cell of button.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a soft packet of lithium cell of button to solve the technical problem that the outside dimensional tolerance between the soft packet of lithium cell of button that exists among the prior art is big.
In order to achieve the above object, the utility model adopts the following technical scheme: the button soft package lithium battery comprises a soft package battery cell and a shell, wherein the soft package battery cell comprises a battery cell body, a positive plate and a negative plate, and the positive plate and the negative plate are used for leading out current from the battery cell body;
the shell comprises a positive electrode shell, a negative electrode shell and an insulating sheet, and both the positive electrode shell and the negative electrode shell have conductivity;
the positive electrode shell is electrically connected with the positive electrode plate, and the negative electrode shell is electrically connected with the negative electrode plate;
the upper end and the lower end of the battery cell body are respectively fixed in the positive electrode shell and the negative electrode shell in an insulating mode, and the insulating sheet is arranged between the positive electrode shell and the negative electrode shell to insulate the positive electrode shell from the negative electrode shell.
Further, the battery cell further comprises an insulating bonding sheet, and the positive electrode shell and the negative electrode shell are respectively bonded on the battery cell body through the bonding sheet.
Further, the bonding sheets fully cover the upper end and the lower end of the battery cell body.
Further, the insulating piece is provided with an avoidance hole allowing the upper end or the lower end of the battery cell body and the bonding piece to penetrate through.
Further, the cell body is provided with a folded edge, and the insulating sheets are arranged between the positive electrode shell and the folded edge and between the negative electrode shell and the folded edge.
Furthermore, a first flanging which is turned over outwards is arranged on the positive electrode shell, and a second flanging which is turned over outwards is arranged on the negative electrode shell;
the first flanging and the second flanging are abutted to the insulating sheet.
Further, the part of the positive electrode shell above the first flange is in a circular truncated cone shape, the diameter of which gradually decreases from bottom to top, and the part of the negative electrode shell below the second flange is in a circular truncated cone shape, the diameter of which gradually decreases from top to bottom.
Further, the positive plate is bent on the outer wall of the positive shell and welded with the positive shell;
the negative pole piece is bent on the outer wall of the negative pole shell and is welded with the negative pole shell.
Further, the insulating sheet is provided with a first avoidance position attached to the positive plate or the negative plate.
Furthermore, a second avoidance position avoiding the positive plate is arranged on the positive shell;
and a third avoidance position for avoiding the negative plate is arranged on the negative shell.
The utility model provides a soft packet of lithium cell of button's beneficial effect lies in: compared with the prior art, the utility model discloses the contour dimension of the positive pole shell and the negative pole shell of button soft-package lithium cell is easy to control, non-deformable, consequently fix the upper end of electric core body in the positive pole shell in an insulating manner, fix the lower extreme of electric core body in the negative pole shell in an insulating manner, the influence of the contour dimension change of soft-package electric core on the contour dimension of button soft-package lithium cell is reduced, thereby the contour dimension of button soft-package lithium cell is difficult to change, the contour dimension tolerance of button soft-package lithium cell is reduced, the user can install and use button soft-package lithium cell conveniently, simultaneously because positive pole shell and negative pole shell are all fixed with electric core body, consequently, the stability of electric core body in installation in the casing is improved, the service life of button soft-package lithium cell is prevented from being influenced; the battery cell body is positioned in the shell and can be protected by the shell, so that the battery cell body is prevented from being deformed when the button soft package lithium battery is dropped, impacted by external force and the like, the button soft package lithium battery is damaged, and the failure rate of the button soft package lithium battery is reduced; the insulating sheet is arranged between the positive electrode shell and the negative electrode shell to insulate the positive electrode shell from the negative electrode shell, so that the situation that the positive electrode shell and the negative electrode shell are conductive to cause short circuit of the button soft package lithium battery is avoided; the button soft package lithium battery has the advantages of simple structure, convenience in assembly and high assembly efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural view of a button soft-package lithium battery provided by an embodiment of the present invention;
FIG. 2 is an exploded schematic view of the button soft pack lithium battery of FIG. 1;
fig. 3 is a schematic structural diagram of the soft-package battery cell in fig. 2.
Wherein, in the figures, the respective reference numerals:
1. soft-packaged battery cells; 11. a cell body; 111. folding edges; 12. a positive plate; 13. a negative plate; 2. a housing; 21. a positive electrode case; 211. a first flanging; 212. a second avoidance position; 22. a negative electrode case; 221. second flanging; 222. a third avoidance position; 23. an insulating sheet; 231. avoiding holes; 232. a first avoidance position; 3. and an adhesive sheet.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be 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 be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to fig. 3, a button soft package lithium battery provided by the present invention will now be described. The button soft package lithium battery comprises a soft package battery cell 1 and a shell 2, wherein the soft package battery cell 1 comprises a battery cell body 11, a positive plate 12 and a negative plate 13, and the positive plate 12 and the negative plate 13 are used for leading current out of the battery cell body 11;
the casing 2 includes a positive electrode can 21, a negative electrode can 22 and an insulating sheet 23, and both the positive electrode can 21 and the negative electrode can 22 have conductivity;
the positive electrode shell 21 is electrically connected with the positive electrode plate 12, and the negative electrode shell 22 is electrically connected with the negative electrode plate 13;
the upper end and the lower end of the cell body 11 are respectively fixed in the positive electrode casing 21 and the negative electrode casing 22 in an insulating manner, and the insulating sheet 23 is arranged between the positive electrode casing 21 and the negative electrode casing 22 to insulate the positive electrode casing 21 from the negative electrode casing 22.
The utility model provides a button soft-package lithium battery, compared with the prior art, the contour dimension of positive pole shell 21 and negative pole shell 22 is easy to control, non-deformable, consequently fix the upper end insulation of electric core body 11 in positive pole shell 21, fix the lower extreme insulation of electric core body 11 in negative pole shell 22, the influence of the contour dimension change of soft-package electric core 1 to the contour dimension of button soft-package lithium battery has been reduced, thereby make the contour dimension of button soft-package lithium battery difficult to change, the contour dimension tolerance of button soft-package lithium battery has been reduced, convenience of customers installs and uses button soft-package lithium battery, simultaneously because positive pole shell 21 and negative pole shell 22 are all fixed with electric core body 11, consequently, the stability of electric core body 11 installation in casing 2 has been improved, avoided electric core body 11 and casing 2 to collide and influence the life of button soft-package lithium battery; the battery cell body 11 is positioned in the shell 2 and can be protected by the shell 2, so that the battery cell body 11 is prevented from deforming when the button soft package lithium battery is dropped, impacted by external force and the like, the button soft package lithium battery is damaged, and the failure rate of the button soft package lithium battery is reduced; the insulating sheet 23 is arranged between the positive electrode shell 21 and the negative electrode shell 22 to insulate the positive electrode shell 21 from the negative electrode shell 22, so that the button soft package lithium battery is prevented from being short-circuited due to the fact that the positive electrode shell 21 and the negative electrode shell 22 are conductive; the button soft package lithium battery has the advantages of simple structure, convenience in assembly and high assembly efficiency.
Specifically, the insulating sheet 23 is PI, PET, or the like.
Further, please refer to fig. 2, as a specific implementation manner of the button soft package lithium battery provided by the present invention, the button soft package lithium battery further includes an insulating adhesive sheet 3, the positive electrode shell 21 and the negative electrode shell 22 are respectively adhered to the battery cell body 11 by the adhesive sheet 3, the structure is simple, the assembly is convenient, meanwhile, the requirement that the positive electrode shell 21 and the negative electrode shell 22 are respectively insulated from the battery cell body 11 is also satisfied, and a short circuit of the button soft package lithium battery is avoided; because the volume of the bonding sheet 3 is small, the occupied space in the shell 2 is small, and therefore the shell 2 can be compatible with the soft package battery core 1 with larger dimensional tolerance.
Specifically, the adhesive sheet 3 is an insulating adhesive tape, such as 3M double-sided tape.
Further, please refer to fig. 2, as a specific embodiment of the button soft-package lithium battery provided by the present invention, the bonding sheets 3 fully cover the upper and lower ends of the battery cell body 11, so that the battery cell body 11 is more easily bonded to the positive electrode shell 21 and the negative electrode shell 22, and the assembly efficiency is improved; the bonding sheet 3 completely isolates the battery cell body 11 from the inner top of the positive electrode shell 21 and the inner bottom of the negative electrode shell 22, so that the button soft-package lithium battery is prevented from short circuit.
Further, please refer to fig. 1 and fig. 2, as a specific embodiment of the button soft-package lithium battery provided by the present invention, the insulation sheet 23 is provided with an avoiding hole 231 allowing the upper end or the lower end of the battery cell body 11 and the bonding sheet 3 to pass, so as to bond the positive electrode shell 21 and the negative electrode shell 22 with the battery cell body 11 respectively, thereby improving the assembling efficiency.
Further, please refer to fig. 1 to fig. 3, as a specific embodiment of the button soft package lithium battery provided by the present invention, the folded edge 111 is disposed on the battery cell body 11, and the insulating sheets 23 are disposed between the positive electrode shell 21 and the folded edge 111 and between the negative electrode shell 22 and the folded edge 111, so as to separate the folded edge 111 from the positive electrode shell 21 and the folded edge 111 from the negative electrode shell 22 through the insulating sheets 23, thereby preventing the positive electrode shell 21 or the negative electrode shell 22 from being electrically conductive with the folded edge 111, and thus causing a short circuit of the button soft package lithium battery; because positive pole shell 21 and negative pole shell 22 link together through electric core body 11, consequently positive pole shell 21 and negative pole shell 22 can butt insulating piece 23 in order to with hem 111 centre gripping to with electric core body 11 steady mounting in casing 2, avoid electric core body 11 and casing 2 to bump and influence the life of the soft packet of lithium cell of button, still reduced hem 111 and taken up the space in casing 2, make casing 2 can be compatible more big tolerance size's soft packet of electric core 1.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the button soft-package lithium battery provided by the present invention, a first flange 211 folded outward is disposed on the positive electrode shell 21, and a second flange 221 folded outward is disposed on the negative electrode shell 22;
the first turned-over edge 211 and the second turned-over edge 221 are abutted to the insulating sheet 23, and the insulating sheet 23 is fixed between the positive electrode shell 21 and the negative electrode shell 22 through the abutment of the first turned-over edge 211 and the second turned-over edge 221 to fix the cell body 11 in the shell 2, so that the stability of the cell body 11 installed in the shell 2 is improved; the first flanging 211 and the second flanging 221 can be separated through the insulating sheet 23, so that the positive electrode shell 21 and the negative electrode shell 22 are insulated, and the button soft package lithium battery is prevented from being short-circuited.
Further, please refer to fig. 1 and fig. 2, as the utility model provides a specific implementation of button soft package lithium battery, the shape of the part that is located first turn-ups 211 top of positive pole shell 21 is the round platform form that the diameter upwards reduces gradually from bottom to top, and the shape of the part that is located second turn-ups 221 below of negative pole shell 22 is the round platform form that the diameter reduces gradually from top to bottom for button soft package lithium battery is close with the shape of button battery on the market, and convenience of customers installs and uses.
Further, please refer to fig. 1, as a specific implementation manner of the button soft package lithium battery provided by the present invention, the positive plate 12 is bent on the outer wall of the positive shell 21 and welded with the positive shell 21, so as to avoid the short circuit of the button soft package lithium battery caused by the contact between the positive plate 12 and the battery cell body 11, and meanwhile, the positive shell 21 and the battery cell body 11 are conveniently fixed, so as to improve the assembly efficiency;
Further, please refer to fig. 2, as the utility model provides a soft packet of lithium cell of button a concrete implementation mode, be equipped with the first position 232 of dodging with the laminating of positive plate 12 or negative pole piece 13 on the insulating piece 23, make positive plate 12 or negative pole piece 13 be close to corresponding positive plate 21 or negative pole shell 22 as far as possible after buckling along first position 232 of dodging, thereby make the structure of the soft packet of lithium cell of button compacter, avoid positive plate 12 and negative pole piece 13 to be propped respectively by insulating piece 23 from the lateral wall of corresponding positive plate 21 and negative pole shell 22 too far away, the structure that leads to the soft packet of lithium cell of button is compact inadequately, influence the user and use.
Further, please refer to fig. 2, as a specific implementation manner of the button soft package lithium battery provided by the present invention, the positive electrode shell 21 is provided with a second avoiding position 212 avoiding the positive electrode plate 12, so as to reduce the protruding height of the bent portion of the positive electrode plate 12 on the outer side wall of the positive electrode shell 21, thereby making the structure of the button soft package lithium battery more compact and facilitating the use of the user;
and a third avoidance position 222 avoiding the negative plate 13 is arranged on the negative shell 22 so as to reduce the protruding height of the bent part of the negative plate 13 on the outer side wall of the negative shell 22, so that the button soft package lithium battery is more compact in structure and convenient for a user to use.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Button soft-packaged lithium cell, including soft-packaged electrical core, soft-packaged electrical core includes electric core body, positive plate and negative pole piece, the positive plate with the negative pole piece be used for certainly draw electric current, its characterized in that in the electric core body: the device also comprises a shell;
the shell comprises a positive electrode shell, a negative electrode shell and an insulating sheet, and both the positive electrode shell and the negative electrode shell have conductivity;
the positive electrode shell is electrically connected with the positive electrode plate, and the negative electrode shell is electrically connected with the negative electrode plate;
the upper end and the lower end of the battery cell body are respectively fixed in the positive electrode shell and the negative electrode shell in an insulating mode, and the insulating sheet is arranged between the positive electrode shell and the negative electrode shell to insulate the positive electrode shell from the negative electrode shell.
2. The button lithium-ion battery pack of claim 1, wherein: the battery cell further comprises an insulating bonding sheet, and the positive electrode shell and the negative electrode shell are respectively bonded on the battery cell body through the bonding sheet.
3. The button lithium-ion battery pack of claim 2, wherein: the bonding sheets completely cover the upper end and the lower end of the battery cell body.
4. The button lithium-ion battery pack of claim 2, wherein: the insulating piece is equipped with the permission upper end or the lower extreme of electricity core body and the hole of dodging that bonding piece passed.
5. The button lithium-ion battery pack of claim 4, wherein: the battery cell comprises a battery cell body and is characterized in that a folded edge is arranged on the battery cell body, and the insulating sheets are arranged between the positive electrode shell and the folded edge and between the negative electrode shell and the folded edge.
6. The button lithium-ion battery pack of claim 5, wherein: the anode shell is provided with a first flange which is turned over outwards, and the cathode shell is provided with a second flange which is turned over outwards;
the first flanging and the second flanging are abutted to the insulating sheet.
7. The button lithium-ion battery pack of claim 6, wherein: the part of the positive electrode shell, which is positioned above the first flanging, is in a circular truncated cone shape, the diameter of the part of the negative electrode shell, which is positioned below the second flanging, is in a circular truncated cone shape, the diameter of the part of the negative electrode shell is gradually reduced from top to bottom.
8. The button lithium-ion battery pack of claim 1, wherein: the positive plate is bent on the outer wall of the positive shell and is welded with the positive shell;
the negative pole piece is bent on the outer wall of the negative pole shell and is welded with the negative pole shell.
9. The button lithium-ion battery pack of claim 8, wherein: the insulating sheet is provided with a first avoidance position which is attached to the positive plate or the negative plate.
10. The button lithium-ion battery pack of claim 9, wherein: a second avoidance position avoiding the positive plate is arranged on the positive shell;
and a third avoidance position for avoiding the negative plate is arranged on the negative shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302655.5U CN211045581U (en) | 2019-12-17 | 2019-12-17 | Button soft package lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302655.5U CN211045581U (en) | 2019-12-17 | 2019-12-17 | Button soft package lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211045581U true CN211045581U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922302655.5U Active CN211045581U (en) | 2019-12-17 | 2019-12-17 | Button soft package lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211045581U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952299A (en) * | 2021-03-11 | 2021-06-11 | 安徽利维能动力电池有限公司 | Winding type lithium battery cell pole piece structure |
| WO2022062431A1 (en) * | 2020-09-24 | 2022-03-31 | 曙鹏科技（深圳）有限公司 | Soft-packed button cell |
| WO2022105158A1 (en) * | 2020-11-18 | 2022-05-27 | 曙鹏科技（深圳）有限公司 | Pouch battery |
-
2019
- 2019-12-17 CN CN201922302655.5U patent/CN211045581U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062431A1 (en) * | 2020-09-24 | 2022-03-31 | 曙鹏科技（深圳）有限公司 | Soft-packed button cell |
| WO2022105158A1 (en) * | 2020-11-18 | 2022-05-27 | 曙鹏科技（深圳）有限公司 | Pouch battery |
| CN112952299A (en) * | 2021-03-11 | 2021-06-11 | 安徽利维能动力电池有限公司 | Winding type lithium battery cell pole piece structure |
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