CN214378547U - Button type lithium ion battery - Google Patents
Button type lithium ion battery Download PDFInfo
- Publication number
- CN214378547U CN214378547U CN202120288802.2U CN202120288802U CN214378547U CN 214378547 U CN214378547 U CN 214378547U CN 202120288802 U CN202120288802 U CN 202120288802U CN 214378547 U CN214378547 U CN 214378547U
- Authority
- CN
- China
- Prior art keywords
- insulating
- plastic body
- negative pole
- coiling
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a button type lithium ion battery, including positive pole shell, negative pole lid, sealing washer and electric core, electrolyte, its characterized in that: still inlay anodal ear and the negative pole ear in insulating coiling plastic body including insulating coiling plastic body and interval, insulating coiling plastic body is coaxial to be located the axial passageway that electric core center formed, anodal ear one end is hugged closely insulating coiling plastic body outer wall and is welded with electric core, the other end is worn out the back from insulating coiling plastic body lower extreme and is welded with anodal shell, insulating coiling plastic body outer wall and electric core welding are hugged closely to negative pole ear one end, the other end is worn out the back from insulating coiling plastic body upper end and is welded with the negative pole lid. The utility model discloses positive and negative pole ear forms wholly through the mode of moulding plastics mold insert and the insulating plastic body of coiling, and the insulating plastic body of coiling firmly connects it, and utmost point ear stability is good, the security is high. The insulating winding plastic body is of a hollow structure, so that the winding needle can be conveniently inserted when the core is wound, and meanwhile, the negative electrode lug can be conveniently welded.
Description
Technical Field
The utility model relates to a lithium ion battery specifically indicates a button type lithium ion battery.
Background
At present, a button-type rechargeable miniature lithium ion battery is generally formed by winding a positive plate, a negative plate and a diaphragm to form a winding battery core, welding the positive plate and the negative plate at the tail end of the winding battery core with a positive lug and a negative lug, spot-welding the lugs on a positive shell and a negative shell for molding, and adhering insulating adhesive paper on the axial end face of the winding battery core to insulate the winding battery core from the battery shell. Because the common tab is arranged at the tail end of the winding core, the tab is bent to the center of the winding electric core after axially extending out and is welded with the shell, and the tab has no fixed structure and is easy to break to cause short circuit of the battery; set up utmost point ear and can make adjacent two circles of electricity core produce the clearance within a definite time, reduce the effective volume of convoluteing of electricity core, and set up utmost point ear at the end of electricity core and will waste a whole circle of electricity core of maximum diameter, lead to battery capacity lower.
Therefore, it is necessary to develop a button-type lithium ion battery with simple structure, convenient installation, firm tab connection and high battery capacity.
Disclosure of Invention
The utility model aims at solving the defects of the prior art and providing a button type lithium ion battery with simple structure, convenient installation, firm connection of lugs and high battery capacity.
The technical scheme of the utility model is that: a button type lithium ion battery comprises a positive electrode shell, a negative electrode cover, a sealing ring, an electric core and electrolyte, wherein the negative electrode cover and the positive electrode shell are buckled up and down oppositely, the sealing ring is positioned between the positive electrode shell and the negative electrode cover, and the positive electrode shell, the negative electrode cover and the sealing ring form a sealing space together to contain the electric core and the electrolyte;
the method is characterized in that: still inlay anodal ear and the negative pole ear in insulating coiling plastic body including insulating coiling plastic body and interval, insulating coiling plastic body is located the axial passageway that electric core center formed, anodal ear one end is hugged closely insulating coiling plastic body outer wall and is welded with electric core, the other end is worn out the back from insulating coiling plastic body lower extreme and is welded with anodal shell, negative pole ear one end is hugged closely insulating coiling plastic body outer wall and is welded with electric core, the other end is worn out the back from insulating coiling plastic body upper end and is welded with the negative pole lid.
Preferably, the upper end face and the lower end face of the battery cell are respectively provided with an upper insulating glue layer and a lower insulating glue layer in an annular shape, the other end of the positive lug penetrates through an inner hole of the lower insulating glue layer to be welded with the positive shell, and the other end of the negative lug penetrates through an inner hole of the upper insulating glue layer to be welded with the negative cover.
Preferably, an axial through hole is formed in the middle of the insulating winding plastic body, and the other end of the negative electrode tab penetrates out of the upper end of the insulating winding plastic body and is welded with the negative electrode cover above the through hole.
Furthermore, the other end of the positive lug penetrates out of the lower end of the insulating winding plastic body and then extends towards the direction away from the through hole to be welded with the positive shell.
Further, anodal ear is including connecting from top to bottom, positive pole first section, the anodal second section that is the L type, the welding of the insulating coiling plastic body outer wall of the upper end laminating of positive pole first section and electric core, lower extreme are located the insulating coiling plastic body, anodal second section upper end is connected with positive pole first section lower extreme and stretches out from the insulating coiling plastic body lower extreme, anodal second section lower extreme is keeping away from the anodal shell welding of laminating of through-hole department.
Further, the negative pole ear includes that the connection from top to bottom, negative pole first section, negative pole second section that are the L type, the welding of laminating negative pole lid in the through-hole top is gone up to negative pole first section upper end, negative pole first section lower extreme gets into in the insulating coiling plastic body, negative pole second section upper end is connected with negative pole first section lower extreme in the insulating coiling plastic body, the insulating coiling plastic body outer wall of negative pole second section lower extreme laminating is welded with electric core.
Preferably, the positive shell lateral wall goes up radial sunken clamping part that forms, negative pole lid tip is at clamping part below radial outside extension formation spacing reason, the sealing washer is moulded plastics and is covered in the negative pole and sealed with the positive shell cooperation.
Preferably, the positive tab and the negative tab are oppositely arranged at two radial ends of the insulation winding plastic body.
The utility model has the advantages that:
1. the positive and negative electrode lugs are integrated with the insulating winding plastic body in an injection molding embedding mode, the insulating winding plastic body firmly connects the positive and negative electrode lugs, and the lugs are good in stability and high in safety. The insulating winding plastic body is of a hollow structure, so that the winding needle can be conveniently inserted when the core is wound, and meanwhile, the negative pole lug can be conveniently welded to the negative pole cover.
2. The positive and negative pole ear all has a face to expose on insulating coiling plastic body outer wall for with electric core welding, because utmost point ear sets up in electric core inner circle, and here electric core diameter is minimum moreover, compares and sets up in electric core outer circle and can improve electric core effective winding volume, increase capacity.
3. The positive electrode lug and the negative electrode lug are distributed at two radial ends of the insulating winding plastic body, so that the creepage distance can be increased, and the safety of the creepage distance is improved. The upper insulating glue layer and the lower insulating glue layer are bonded at two axial ends of the battery cell, have an insulating protection effect and avoid the short circuit of the positive and negative pole pieces of the battery cell in contact with the shell.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
FIG. 2 is a partial schematic view of the insulation winding plastic body, the positive electrode tab and the negative electrode tab in FIG. 1
FIG. 3 is a top view of an insulation wound plastic body
Wherein: 1-positive electrode shell 2-negative electrode cover 3-sealing ring 4-battery cell 5-electrolyte 6-axial channel 7-insulation winding plastic body 8-positive electrode tab 9-negative electrode tab 10-upper insulation adhesive layer 11-lower insulation adhesive layer 12-clamping part 21-limiting edge 71-through hole 81-positive electrode first section 82-positive electrode second section 91-negative electrode first section 92-negative electrode second section.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1-3, the utility model provides a button type lithium ion battery, including positive pole shell 1, negative pole lid 2, sealing washer 3 and electric core 4, electrolyte 5, negative pole lid 2, positive pole shell 1 are relative lock from top to bottom, and sealing washer 3 is located between positive pole shell 1, negative pole lid 2, and positive pole shell 1, negative pole lid 2, sealing washer 3 form the seal space jointly and hold electric core 4, electrolyte 5; still inlay anodal ear 8 and the negative pole ear 9 in insulating coiling plastic body 7 including insulating coiling plastic body 7 and interval, insulating coiling plastic body 7 is coaxial to be located the axial passageway 6 that electric core 4 center formed, anodal ear 8 one end is hugged closely insulating coiling plastic body 7 outer wall and is welded with electric core 4, the other end is worn out back and is welded with anodal shell 1 from insulating coiling plastic body 7 lower extreme, negative pole ear 9 one end is hugged closely insulating coiling plastic body 7 outer wall and is welded with electric core 4, the other end is worn out the back and is welded with negative pole lid 2 from insulating coiling plastic body 7 upper end. In this embodiment, the negative cover 2 is located above the positive casing 1, and the positive casing 1, the negative cover 2, the sealing ring 3, the battery cell 4, and the insulating winding plastic body 7 are coaxially disposed and axially oriented in the vertical direction in fig. 1.
The upper end face and the lower end face of the battery cell 4 are respectively provided with an annular upper insulating glue layer 10 and an annular lower insulating glue layer 11 to isolate the battery cell 4 from the negative electrode cover 2 and the positive electrode shell 1. The insulating wound plastic body 7 is provided with an axial through hole 71 in the middle.
The positive electrode tab 8 comprises a positive electrode first section 81 and a positive electrode second section 82 which are connected up and down and are L-shaped, the outer wall of the positive electrode first section 81 is jointed with the outer wall of the insulation winding plastic body 7 and welded with the battery cell 4, the lower end of the positive electrode first section 81 is positioned in the insulation winding plastic body 7, the upper end of the positive electrode second section 82 is connected with the lower end of the positive electrode first section 81 and stretches out from the lower end of the insulation winding plastic body 7 to penetrate through the inner hole of the lower insulation adhesive layer 11, and the lower end of the positive electrode second section 82 is jointed with the positive electrode shell 1 far away from the through hole 71 to be welded.
The negative pole ear 9 comprises a negative pole first section 91 and a negative pole second section 92 which are connected up and down and are L-shaped, the outer wall of the insulating winding plastic body 7 attached to the lower end of the negative pole second section 92 is welded with the battery cell 4, the upper end of the insulating winding plastic body 7 is located, the lower end of the negative pole first section 91 is connected with the upper end of the negative pole second section 92, the lower end of the negative pole first section is extended out of the upper end of the insulating winding plastic body 7 to penetrate through an inner hole of the upper insulating glue layer 10, and the upper end of the negative pole first section 91 is welded with the negative pole cover 2 attached to the upper side of the through hole 71.
Radial sunken formation chucking portion 12 on the 1 lateral wall of positive plate shell, the negative pole is covered 2 lower extremes and is located chucking portion 12 below and radially outwards extends and form spacing edge 21, and sealing washer 3 moulds plastics and seals with 1 cooperation of positive plate shell on covering 2 at the negative pole.
In this embodiment, the positive tab 8 and the negative tab 9 are oppositely disposed at two radial ends of the insulating winding plastic body 7, so that the creepage distance can be maximized, and the safety can be improved.
In this embodiment, the battery cell 4 is formed by sequentially laminating a first pole piece, a middle diaphragm, a second pole piece, and an outer diaphragm and then winding the laminated pieces inward, where one of the first pole piece and the second pole piece is a positive pole piece, and the other is a negative pole piece. The inner ends of the first pole piece, the middle diaphragm, the second pole piece and the outer diaphragm are arranged inwards in sequence along the winding direction, so that the first pole piece and the second pole piece (the positive pole piece and the negative pole piece) can be exposed at the inner ring of the battery cell to form a radial opposite pole lug welding area for welding a positive pole lug 8 and a negative pole lug 9.
The utility model discloses a theory of operation does:
Claims (8)
1. A button type lithium ion battery comprises a positive electrode shell (1), a negative electrode cover (2), a sealing ring (3), an electric core (4) and electrolyte (5), wherein the negative electrode cover (2) and the positive electrode shell (1) are buckled up and down oppositely, the sealing ring (3) is positioned between the positive electrode shell (1) and the negative electrode cover (2), and the positive electrode shell (1), the negative electrode cover (2) and the sealing ring (3) jointly form a sealing space for accommodating the electric core (4) and the electrolyte (5);
the method is characterized in that: still inlay anodal ear (8) and negative pole ear (9) in insulating coiling plastic body (7) including insulating coiling plastic body (7) and interval, insulating coiling plastic body (7) are located axial passageway (6) that electric core (4) center formed, anodal ear (8) one end is hugged closely insulating coiling plastic body (7) outer wall and is welded with electric core (4), the other end is worn out the back from insulating coiling plastic body (7) lower extreme and is welded with anodal shell (1), negative pole ear (9) one end is hugged closely insulating coiling plastic body (7) outer wall and is welded with electric core (4), the other end is worn out the back and is welded with negative pole lid (2) from insulating coiling plastic body (7) upper end.
2. The button-type lithium ion battery of claim 1, wherein: the terminal surface sets up annular last insulating glue layer (10), lower insulating glue layer (11) respectively about electric core (4), insulating glue layer (11) hole and positive shell (1) welding are passed down to positive ear (8) other end, negative pole ear (9) other end passes upper insulating glue layer (10) hole and negative pole lid (2) welding.
3. The button-type lithium ion battery of claim 1, wherein: the middle of the insulation winding plastic body (7) is provided with an axial through hole (71), and the other end of the negative electrode lug (9) penetrates out of the upper end of the insulation winding plastic body (7) and then is welded with the negative electrode cover (2) above the through hole (71).
4. The button lithium ion battery of claim 3, wherein: the other end of the positive lug (8) penetrates out of the lower end of the insulating winding plastic body (7) and then extends towards the direction far away from the through hole (71) to be welded with the positive shell (1).
5. The button lithium ion battery of claim 3, wherein: anodal ear (8) are including connecting from top to bottom, are anodal first section (81), anodal second section (82) of L type, the insulating coiling plastic body (7) outer wall of the upper end laminating of anodal first section (81) is welded with electric core (4), the lower extreme is located insulating coiling plastic body (7), anodal second section (82) upper end is connected with anodal first section (81) lower extreme and is stretched out from insulating coiling plastic body (7) lower extreme, anodal second section (82) lower extreme is keeping away from the anodal shell (1) welding of laminating of through-hole (71).
6. The button lithium ion battery of claim 3, wherein: the negative pole ear (9) is including connecting from top to bottom, negative pole first section (91), negative pole second section (92) that are the L type, the welding of laminating negative pole lid (2) in through-hole (71) top is gone up to negative pole first section (91), in negative pole first section (91) lower extreme gets into insulating coiling plastic body (7), negative pole second section (92) upper end is connected with negative pole first section (91) lower extreme in insulating coiling plastic body (7), the outer wall of insulating coiling plastic body (7) of negative pole second section (92) lower extreme laminating welds with electric core (4).
7. The button-type lithium ion battery of claim 1, wherein: radial sunken chucking portion (12) that form on positive shell (1) lateral wall, negative pole lid (2) tip is in chucking portion (12) below radial outside extension formation spacing edge (21), sealing washer (3) are moulded plastics and are sealed with positive shell (1) cooperation on negative pole lid (2).
8. The button-type lithium ion battery of claim 1, wherein: the positive electrode lug (8) and the negative electrode lug (9) are oppositely arranged at two radial ends of the insulating winding plastic body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120288802.2U CN214378547U (en) | 2021-02-01 | 2021-02-01 | Button type lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120288802.2U CN214378547U (en) | 2021-02-01 | 2021-02-01 | Button type lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378547U true CN214378547U (en) | 2021-10-08 |
Family
ID=77962292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120288802.2U Active CN214378547U (en) | 2021-02-01 | 2021-02-01 | Button type lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214378547U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114551912A (en) * | 2022-02-11 | 2022-05-27 | 广东微电新能源有限公司 | Roll core and button battery manufacturing method |
| WO2022151788A1 (en) * | 2021-01-18 | 2022-07-21 | 江苏德立信电子科技有限公司 | Cylindrical lithium battery and preparation method therefor |
| WO2023168545A1 (en) * | 2022-03-07 | 2023-09-14 | 宁德新能源科技有限公司 | Insulating sheet, battery cell, battery and electronic device |
-
2021
- 2021-02-01 CN CN202120288802.2U patent/CN214378547U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022151788A1 (en) * | 2021-01-18 | 2022-07-21 | 江苏德立信电子科技有限公司 | Cylindrical lithium battery and preparation method therefor |
| CN114551912A (en) * | 2022-02-11 | 2022-05-27 | 广东微电新能源有限公司 | Roll core and button battery manufacturing method |
| WO2023168545A1 (en) * | 2022-03-07 | 2023-09-14 | 宁德新能源科技有限公司 | Insulating sheet, battery cell, battery and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214378547U (en) | Button type lithium ion battery | |
| CN109065822A (en) | Button cell | |
| CN117996380B (en) | 1.5V lithium battery and manufacturing method thereof | |
| CN115051089A (en) | Split type battery top cover assembly | |
| CN215220838U (en) | Battery case, battery and vehicle | |
| CN208674180U (en) | A kind of battery | |
| CN109301104B (en) | Cap assembly for cylindrical battery and cylindrical secondary battery | |
| CN113013527A (en) | Novel button battery and manufacturing and mounting method of shell sealing element structure | |
| CN210403778U (en) | Button cell for improving radial space utilization rate | |
| CN214625135U (en) | Novel button type lithium ion battery | |
| CN210379217U (en) | Cylindrical battery and battery cap thereof | |
| CN217903390U (en) | Positive terminal of cylindrical battery and cylindrical battery | |
| CN217691381U (en) | Riveting assembly structure of battery top cover and integrated battery top cover assembly | |
| CN112151737A (en) | Button type lithium ion battery and preparation method and shell thereof | |
| CN215911489U (en) | Button cell | |
| CN217035706U (en) | TWS utmost point ear sealed box hat electricity core | |
| CN111900452B (en) | Vertical sealed cylindrical battery and preparation method thereof | |
| CN212380472U (en) | Soft package button cell | |
| CN211265537U (en) | Micro battery | |
| CN111900451B (en) | Conical surface sealing type cylindrical battery and preparation method thereof | |
| CN211404603U (en) | Button cell | |
| CN211578912U (en) | Lithium ion button cell of stable performance | |
| CN217903264U (en) | Cylindrical battery shell and cylindrical battery | |
| CN213071223U (en) | Button cell | |
| CN221632717U (en) | Battery top cover assembly and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |