CN216133915U - Button cell with aluminum plastic film - Google Patents
Button cell with aluminum plastic film Download PDFInfo
- Publication number
- CN216133915U CN216133915U CN202120559064.0U CN202120559064U CN216133915U CN 216133915 U CN216133915 U CN 216133915U CN 202120559064 U CN202120559064 U CN 202120559064U CN 216133915 U CN216133915 U CN 216133915U
- Authority
- CN
- China
- Prior art keywords
- aluminum
- plastic film
- shell
- bending part
- insulating
- 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
Abstract
The utility model relates to the technical field of batteries, in particular to a button battery with an aluminum plastic film. The button battery with the aluminum-plastic film comprises a sealing assembly and a battery pack assembly, wherein the sealing assembly comprises an aluminum-plastic film positive shell, an insulating sealing ring and an aluminum-plastic film negative shell, the aluminum-plastic film negative shell comprises a negative pole round cap cover and a negative pole cap edge, a first bending part is formed on the negative pole cap edge, the aluminum-plastic film positive shell comprises a cylindrical cavity and a positive pole edge, and a second bending part is formed on the positive pole edge; and the insulating sealing ring is in interference fit and is fixedly connected with the second bending part. In conclusion, realize insulating sealing washer sets up outside the airtight space, the processing of being convenient for to inlay plastics with improve the airtight space's of battery volume to increase battery capacity and improve button cell's performance.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a button battery with an aluminum plastic film.
Background
The rechargeable button battery has the characteristics of small volume, high battery voltage, stable discharge voltage, wide working temperature range, long storage life and the like, and is widely applied to calculators, electronic watches, remote controllers, electronic toys, intelligent wearable equipment and the like. At present, current rechargeable button cell includes anodal metal casing, negative pole metal casing and by the negative pole piece, the electric core subassembly that insulating diaphragm and positive plate are constituteed, negative pole metal casing outer peripheral edges are inlayed and are had the sealing washer, anodal metal casing and anodal metal casing cooperation back, the sealing washer contacts with anodal metal casing's shell bottom, play sealed effect, the electrolyte is equipped with in the sealed space that anodal metal casing and negative pole metal casing cooperation formed, and the electric core subassembly is located sealed space.
In order to play a good role in supporting and sealing, the sealing ring needs to have enough height and thickness to be in large-area contact with the positive metal shell so as to ensure the sealing performance of the battery, but the sealing ring occupies precious space in the battery accommodating cavity, reduces the addition of active substances of the battery and reduces the discharge capacity of the battery.
Disclosure of Invention
The utility model aims to provide a button cell with an aluminum plastic film, aiming at overcoming the defects in the prior art.
The button battery with the aluminum-plastic film comprises a sealing assembly and a battery pack assembly, wherein the sealing assembly comprises an aluminum-plastic film positive shell, an insulating sealing ring and an aluminum-plastic film negative shell matched with the aluminum-plastic film positive shell, the aluminum-plastic film negative shell comprises a negative pole round cap cover with a downward opening and a negative pole cap edge fixed on the outer ring of the lower part of the negative pole round cap cover, a first downward-concave bending part is formed at one end, close to the negative pole round cap cover, of the negative pole cap edge, the aluminum-plastic film positive shell comprises a cylindrical cavity with an upward opening and a positive pole edge fixed on the outer ring of the upper part of the cylindrical cavity, and a second downward-concave bending part which is attached to the first bending part is formed at one end, far away from the cylindrical cavity, of the positive pole edge; the anode brim is pressed downwards and sealed to the cathode brim, the second bending part is embedded in the first bending part, the outermost ring of the second bending part is attached to the concave surface of the first bending part, one end, far away from the cathode round cap, of the cathode brim is abutted to the inner surface of the cylindrical cavity, and the insulating sealing ring is in interference fit and fixedly connected to the second bending part; the positive shell of plastic-aluminum membrane, plastic-aluminum membrane negative pole shell and insulating sealing washer cooperate and form airtight space, the battery pack subassembly sets up in the airtight space, the battery pack subassembly include with the positive plate of the positive shell electric connection of plastic-aluminum membrane and with plastic-aluminum membrane negative pole shell electric connection's negative pole piece and setting are in insulating diaphragm between positive plate and the negative pole piece.
As a further scheme of the utility model: the positive electrode edge is of a sawtooth structure.
As a further scheme of the utility model: the sealing ring is a rubber modified polypropylene high-temperature resistant sealing ring.
As a further scheme of the utility model: and a conductive net for increasing the conductivity of the positive electrode is arranged between the positive plate and the insulating diaphragm.
As a further scheme of the utility model: the insulation diaphragm is arranged on the outer side of the sealing component, and the metal heat conducting sheet is attached to the insulation diaphragm.
As a further scheme of the utility model: the metal heat conducting sheet is used for isolating electrolyte and preventing the electrolyte from contacting the insulating diaphragm.
As a further scheme of the utility model: and a heat dissipation paste is arranged between the insulating diaphragm and the metal heat conducting fin.
As a further scheme of the utility model: and a second metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the negative plate, the edge of the second metal heat conducting sheet is connected with the sealing assembly, and a heat dissipating paste is arranged between the insulating diaphragm and the second metal heat conducting sheet.
The utility model has the beneficial effects that:
the insulating sealing ring is in interference fit and fastened connection with the second bending part, so that the aluminum-plastic film generates stress at the second bending part, and the stress generated at the second bending part can be increased by abutting the negative electrode cap edge on the inner surface of the cylindrical cavity, so that the efficient sealing effect is achieved, and the insulating sealing ring is arranged outside the sealed space, so that the processing of embedding plastics is facilitated, the volume of the sealed space of the battery can be improved, the capacity of the battery is increased, and the performance of the rechargeable button battery is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The reference numerals include:
1-plastic-aluminum film anode shell 2-plastic-aluminum film cathode shell 3-anode plate 4-cathode plate
5-insulating seal ring 6-insulating diaphragm 7-metal heat conducting fin
8-second metal heat-conducting fin 9-radiating paste
111-cylindrical cavity 112-positive pole edge 113-second bending part
221-negative pole cap 222-negative pole brim 223-first bending part.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
The first embodiment.
As shown in fig. 1, the button cell with the aluminum-plastic film comprises a sealing assembly and a cell assembly, wherein the sealing assembly comprises an aluminum-plastic film positive shell 1, an insulating sealing ring 5 and an aluminum-plastic film negative shell 2 matched with the aluminum-plastic film positive shell 1, the aluminum-plastic film negative shell 2 comprises a negative pole round cap cover 221 with a downward opening and a negative pole cap edge 222 fixed on the outer ring of the lower part of the negative pole round cap cover 221, a first downward-concave bending portion 223 is formed at one end of the negative pole cap edge 222 close to the negative pole round cap cover 221, the aluminum-plastic film positive shell 1 comprises a cylindrical cavity 111 with an upward opening and a positive pole brim 112 fixed on the outer ring of the upper part of the cylindrical cavity 111, and a second downward-concave bending portion 113 attached to the first bending portion 223 is formed at one end of the positive pole brim 112 far away from the cylindrical cavity 111; the positive electrode brim 112 is pressed down and sealed to the negative electrode brim 222, the second bending portion 113 is embedded in the first bending portion 223, the outermost ring of the second bending portion 113 is attached to the concave surface of the first bending portion 223, one end, far away from the negative electrode round cap cover 221, of the negative electrode brim 222 abuts against the inner surface of the cylindrical cavity 111, and the insulating seal ring 5 is in interference fit and fixedly connected to the second bending portion 113; the positive shell of plastic-aluminum membrane 1, plastic-aluminum membrane negative pole shell 2 and insulating sealing washer 5 cooperate and form airtight space, the electric core subassembly sets up in the airtight space, the electric core subassembly include with 1 electric connection's of the positive shell of plastic-aluminum membrane positive pole shell 3 and with 2 electric connection's of the plastic-aluminum membrane negative pole shell negative pole piece 4 and setting are in insulating diaphragm 6 between positive piece 3 and the negative pole piece 4.
During the use, highly be applicable to the performance of battery through the plastic-aluminum membrane, make simultaneously insulating sealing washer 5 interference fit and fastening connection in second bending portion 113 to make the plastic-aluminum membrane be in second bending portion 113 produces stress, because the negative pole brim of a hat 222 is kept away from the one end of negative pole round cap 221 support in the internal surface of cylindrical cavity 111, so the produced stress of second bending portion 113 will strengthen the negative pole brim of a hat 222 in the support power of the internal surface of cylindrical cavity 111, thereby reach the high-efficient sealed effect, realized simultaneously again insulating sealing washer 5 sets up outside the airtight space, so not only be convenient for inlay the processing of moulding, but also can improve the volume in the airtight space of battery, thereby increase battery capacity, improved rechargeable button cell's performance.
Further, the positive electrode edge 112 has a sawtooth structure. The positive electrode is pressed down along the edge 112 by the gaps between the saw-tooth structures to avoid wrinkles.
In a further scheme, the sealing ring is a rubber modified polypropylene high-temperature resistant sealing ring. The high-temperature-resistant material performance of the insulating seal ring 5 is enhanced through the high-temperature-resistant characteristic of the rubber modified polypropylene.
In a further scheme, a conductive net for increasing the conductivity of the positive electrode is arranged between the positive plate 3 and the insulating diaphragm 6. By increasing the conductivity of the positive electrode, the internal resistance of the battery is reduced, the power loss of the battery is reduced, and the effect of reducing heating is achieved.
Example two.
Further, a metal heat conducting sheet 7 attached to the insulating diaphragm 6 is arranged between the insulating diaphragm 6 and the positive plate 3, and the edge of the metal heat conducting sheet 7 is connected to the sealing assembly.
In actual production and life, the battery usually generates higher temperature during charging or discharging, but the conventional rechargeable button battery structure is insulated by a layer of insulating diaphragm 6 between a positive electrode and a negative electrode, the insulating diaphragm 6 can melt or soften at high temperature, the electrolyte of the battery can vaporize at high temperature, and electrolyte steam can leak from the softened or melted sealing part, so that the battery is weightless and the performance is reduced. When the insulating diaphragm 6 and the positive plate 3 work, the metal heat conducting sheet 7 attached to the insulating diaphragm 6 is arranged between the insulating diaphragm 6 and the positive plate 3, the edge of the metal heat conducting sheet 7 is connected with the sealing assembly, heat of the insulating diaphragm 6 is guided to the sealing assembly through the metal heat conducting sheet 7, and the influence of high temperature on the insulating diaphragm 6 is reduced; and due to the characteristic that the metal dissipates heat quickly, the heat dissipation of the heat of the insulating diaphragm 6 is further accelerated by the metal heat conducting fins 7 to guide the heat of the insulating diaphragm 6 to the sealing assembly.
Further, the metal heat conduction sheet 7 is used for isolating the electrolyte and preventing the electrolyte from contacting the insulating diaphragm 6. The metal heat conducting sheet 7 isolates the electrolyte, so that water vapor generated by vaporization of the electrolyte under a high-temperature condition cannot directly contact with the insulating diaphragm 6, and further the influence of high temperature on the insulating diaphragm 6 is further reduced.
Further, a heat dissipation paste 9 is arranged between the insulating diaphragm 6 and the metal heat conducting sheet 7. The influence of high temperature on the insulating diaphragm 6 is further reduced by the heat dissipation effect of the heat dissipation paste 9.
In a further scheme, a second metal heat conducting sheet 8 attached to the insulating diaphragm 6 is arranged between the insulating diaphragm 6 and the negative plate 4, the edge of the second metal heat conducting sheet 8 is connected to the sealing assembly, and a heat dissipating paste 9 is arranged between the insulating diaphragm 6 and the second metal heat conducting sheet 8. Further strengthen heat conduction effect and radiating effect to insulating diaphragm 6, and then further reduce high temperature to the influence of insulating diaphragm 6.
In conclusion, the present invention has the above-mentioned excellent characteristics, so that it can be used to enhance the performance of the prior art and has practicability, and becomes a product with practical value.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (8)
1. The button cell with the aluminum-plastic film comprises a sealing component and a cell component, wherein the sealing component comprises an aluminum-plastic film anode shell, an insulating sealing ring and an aluminum-plastic film cathode shell matched with the aluminum-plastic film anode shell,
the method is characterized in that: the aluminum-plastic film negative electrode shell comprises a negative electrode round cap cover with a downward opening and a negative electrode cap edge fixed on the outer ring of the lower part of the negative electrode round cap cover, a first downward-concave bending part is formed at one end, close to the negative electrode round cap cover, of the negative electrode cap edge, the aluminum-plastic film positive electrode shell comprises a cylindrical cavity with an upward opening and a positive electrode edge fixed on the outer ring of the upper part of the cylindrical cavity, and a second downward-concave bending part which is attached to the first bending part is formed at one end, far away from the cylindrical cavity, of the positive electrode edge; the anode brim is pressed downwards and sealed to the cathode brim, the second bending part is embedded in the first bending part, the outermost ring of the second bending part is attached to the concave surface of the first bending part, one end, far away from the cathode round cap, of the cathode brim is abutted to the inner surface of the cylindrical cavity, and the insulating sealing ring is in interference fit and fixedly connected to the second bending part;
the positive shell of plastic-aluminum membrane, plastic-aluminum membrane negative pole shell and insulating sealing washer cooperate and form airtight space, the battery pack subassembly sets up in the airtight space, the battery pack subassembly include with the positive plate of the positive shell electric connection of plastic-aluminum membrane and with plastic-aluminum membrane negative pole shell electric connection's negative pole piece and setting are in insulating diaphragm between positive plate and the negative pole piece.
2. The button cell with the aluminum plastic film as recited in claim 1, wherein: the positive electrode edge is of a sawtooth structure.
3. The button cell with the aluminum plastic film as recited in claim 1, wherein: the sealing ring is a rubber modified polypropylene high-temperature resistant sealing ring.
4. The button cell with the aluminum plastic film as recited in claim 1, wherein: and a conductive net for increasing the conductivity of the positive electrode is arranged between the positive plate and the insulating diaphragm.
5. The button battery with the aluminum-plastic film as recited in any one of claims 1 to 4, wherein: the insulation diaphragm is arranged on the outer side of the sealing component, and the metal heat conducting sheet is attached to the insulation diaphragm.
6. The button cell with the aluminum plastic film as recited in claim 5, wherein: the metal heat conducting sheet is used for isolating electrolyte and preventing the electrolyte from contacting the insulating diaphragm.
7. The button cell with the aluminum-plastic film as recited in claim 6, wherein: and a heat dissipation paste is arranged between the insulating diaphragm and the metal heat conducting fin.
8. The button cell with the aluminum plastic film as recited in claim 5, wherein: and a second metal heat conducting sheet attached to the insulating diaphragm is arranged between the insulating diaphragm and the negative plate, the edge of the second metal heat conducting sheet is connected with the sealing assembly, and a heat dissipating paste is arranged between the insulating diaphragm and the second metal heat conducting sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120559064.0U CN216133915U (en) | 2021-03-18 | 2021-03-18 | Button cell with aluminum plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120559064.0U CN216133915U (en) | 2021-03-18 | 2021-03-18 | Button cell with aluminum plastic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216133915U true CN216133915U (en) | 2022-03-25 |
Family
ID=80764973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120559064.0U Active CN216133915U (en) | 2021-03-18 | 2021-03-18 | Button cell with aluminum plastic film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216133915U (en) |
-
2021
- 2021-03-18 CN CN202120559064.0U patent/CN216133915U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215578776U (en) | Cylindrical lithium ion battery with novel structure | |
| CN214754070U (en) | Cylindrical battery top cover and cylindrical battery using same | |
| CN203826457U (en) | High-voltage nickel-metal hydride battery with high heat dissipation function and safety device | |
| KR20040005243A (en) | Battery unit and the lithium secondary battery applying the same | |
| CN206293586U (en) | A kind of fluorophosphoric acid vanadium lithium positive electrode lithium battery of long service life | |
| CN216133915U (en) | Button cell with aluminum plastic film | |
| CN219180634U (en) | Power battery cover plate and battery | |
| CN209232828U (en) | Lithium ion battery with aluminum shell and its shell and its top cover | |
| CN102916159A (en) | High-power lithium battery | |
| CN215220841U (en) | Rechargeable button cell | |
| CN209592152U (en) | A kind of composite lithium ion battery of high life | |
| CN211957702U (en) | Heat release explosion-proof lithium ion battery | |
| CN108110201B (en) | Pole piece fixing mechanism and button cell | |
| CN112366428A (en) | Lithium ion energy storage battery | |
| CN220209107U (en) | Integral plastic cover plate | |
| CN211295157U (en) | Battery core structure convenient for heat dissipation | |
| CN216288655U (en) | High-temperature-resistant high-safety lithium battery core | |
| CN216671735U (en) | High-performance graphene nickel-metal hydride battery structure | |
| CN216213773U (en) | High-efficient new forms of energy lithium cell | |
| CN117673498B (en) | Low-voltage lithium battery | |
| CN216903147U (en) | Battery cover plate sealing structure | |
| CN204966628U (en) | Zinc -nickel button battery | |
| CN211789208U (en) | Explosion-proof lithium cell group of strengthening | |
| CN210692655U (en) | Environment-friendly lithium ion battery diaphragm with high liquid absorption rate | |
| CN219658832U (en) | Top cover of power battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |