CN211045559U - Explosion-proof hole structure of button cell - Google Patents
Explosion-proof hole structure of button cell Download PDFInfo
- Publication number
- CN211045559U CN211045559U CN201922025300.6U CN201922025300U CN211045559U CN 211045559 U CN211045559 U CN 211045559U CN 201922025300 U CN201922025300 U CN 201922025300U CN 211045559 U CN211045559 U CN 211045559U
- Authority
- CN
- China
- Prior art keywords
- electrode plate
- sheet
- button cell
- positive electrode
- negative electrode
- 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides a button cell's explosion-proof hole structure, its characterized in that: the electrode isolation assembly comprises a positive electrode plate, a negative electrode plate and an isolation body positioned between the positive electrode plate and the negative electrode plate and used for isolating the positive electrode plate and the negative electrode plate, and is provided with a positive electrode lug and a negative electrode lug which respectively extend towards the upper part and the lower part of the electrode isolation assembly; the positive pole lug is connected with the positive pole piece, the negative pole lug is connected with the negative pole piece, at least one of the upper shell cover and the lower shell is provided with a through hole, and a metal foil layer used for covering the through hole is attached to the inner surface of the upper shell cover and/or the lower shell at the through hole. The utility model discloses utilize above-mentioned structure can press when too big the pressure release in the button cell.
Description
The technical field is as follows:
the utility model relates to a button cell's explosion-proof hole structure.
Background art:
button cells (button cells) are also called button cells, and refer to cells with the overall dimensions like a small button, generally speaking, the button cells have a larger diameter and a thinner thickness (compared with cylindrical cells such as a cell with a size of 5 AA on the market), the button cells are classified from the aspect of the appearance, and the equivalent corresponding cells are classified into cylindrical cells, square cells, special-shaped cells and the like.
The electrode isolation component in the button cell comprises a laminated type button cell and a wound type button cell, and both the laminated type button cell and the wound type button cell can have explosion accidents in the using process, so that great loss is caused to human bodies and property, and no method or structure for effectively preventing the accidents is provided at present.
The invention content is as follows:
an object of the utility model is to provide a button cell's explosion-proof pore structure promptly, this button cell's explosion-proof pore structure reasonable in design is favorable to the emergence of prevention explosion accident.
The utility model discloses a one of them embodiment is: the utility model discloses button cell's explosion-proof hole structure, its characterized in that: the electrode isolation assembly comprises a positive electrode plate, a negative electrode plate and an isolation body positioned between the positive electrode plate and the negative electrode plate and used for isolating the positive electrode plate and the negative electrode plate, and is provided with a positive electrode lug and a negative electrode lug which respectively extend towards the upper part and the lower part of the electrode isolation assembly; the positive pole lug is connected with the positive pole piece, the negative pole lug is connected with the negative pole piece, at least one of the upper shell cover and the lower shell is provided with a through hole, and a metal foil layer used for covering the through hole is attached to the inner surface of the upper shell cover and/or the lower shell at the through hole.
Furthermore, the outer surface of the upper shell cover and/or the lower shell body is provided with an easy-to-tear protective film layer at the through hole for covering the through hole.
Further, the thickness of the metal foil layer is 5 to 50 micrometers.
Furthermore, the aperture of the through hole is 2-9 mm, and the metal foil layer is circular and has a diameter of 5-12 mm.
The utility model discloses a theory of operation: at least one of the upper shell cover and the lower shell is provided with a through hole, a metal foil layer for covering the through hole is attached to the inner surface of the upper shell cover and/or the lower shell at the through hole, when the internal pressure of the button cell reaches a certain value (generally, the internal pressure inside the cell reaches more than 10Kpa, the risk of explosion exists, therefore, the internal pressure is generally set below 10 Kpa), the metal foil layer is broken by the internal pressure, so that the internal pressure of the button cell is released, and the explosion accident of the button cell is avoided.
The utility model discloses another embodiment is: the utility model discloses button cell's explosion-proof hole structure, its characterized in that: the electrode isolation assembly comprises a positive electrode plate, a negative electrode plate and an isolation body positioned between the positive electrode plate and the negative electrode plate and used for isolating the positive electrode plate and the negative electrode plate, and is provided with a positive electrode lug and a negative electrode lug which respectively extend towards the upper part and the lower part of the electrode isolation assembly; the positive pole lug is connected with the positive electrode plate, the negative pole lug is connected with the negative electrode plate, and at least one of the upper shell cover and the lower shell is provided with a counter bore.
The utility model discloses a theory of operation: above-mentioned go up the cap and down the casing and have at least one to be equipped with the counter bore, this counter bore can be established at last cap andor the interior bottom surface or the surface of casing down, because set up the counter bore on last cap andor the casing down, make this position intensity comparatively weak, when having certain pressure in the battery, this position is broken and is played the effect of pressure release comparatively easily, the danger that just has the explosion above reaching 10Kpa of the inside internal pressure of battery usually, consequently, when design counter bore degree of depth thickness, can regard this pressure as the reference promptly.
Both of the above embodiments may include the following configurations:
furthermore, at least one or one section of the positive electrode lug and the negative electrode lug is made of conductive easy-to-tear sheets, and the other end of each easy-to-tear sheet is connected with a metal sheet which is used for being fixedly connected with the inner surface of the upper shell cover or the lower shell body.
Furthermore, the conductive easy-to-tear sheet is an aluminum sheet, an aluminum foil, a copper sheet or a copper foil.
Further, the thickness of the conductive easy-tear sheet is 6-100 micrometers.
Further, the metal sheet is a nickel sheet or a stainless steel sheet, and the thickness of the metal sheet is 0.1-0.2 mm.
Furthermore, the metal sheet is circular or oval, the conductive easy-to-tear sheet is rectangular, and the width of the conductive easy-to-tear sheet is smaller than that of the metal sheet, so that a relative concave is formed between the conductive easy-to-tear sheet and the metal sheet.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses utilize above-mentioned structure to be favorable to avoiding pressing too big and producing the accident of explosion in the button cell.
Description of the drawings:
fig. 1 is a schematic view of a three-dimensional structure of an embodiment of the electrode isolation assembly, the positive electrode tab and the metal sheet (the whole electrode tab is a conductive easily-torn sheet material);
fig. 2 is a schematic three-dimensional structure diagram of another embodiment of the electrode isolation assembly, the positive electrode tab and the metal sheet of the present invention (a sectional electrode tab is a conductive easily torn sheet);
fig. 3 is a schematic perspective view of another embodiment of the electrode separator assembly, the positive electrode tab and the metal sheet according to the present invention (with an insulating patch);
fig. 4 is a schematic perspective view of an embodiment of an electrode isolation assembly and a negative electrode tab of the present invention;
fig. 5 is a schematic perspective view of another embodiment of the electrode isolation assembly, the negative electrode tab and the metal sheet of the present invention;
fig. 6 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of another embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of another embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses button cell's explosion-proof hole structure includes that cover the last cap 1 and the lower casing 2 that form, goes up cap 1 and lower casing 2 and adopt stainless steel material to make usually, but does not exclude other materials to make, lower casing 2 and the interior middle part of last cap 1 are equipped with electrode isolation component 3, electrode isolation component 3 includes positive electrode piece, negative electrode piece and is located and is used for keeping apart positive, negative electrode piece's isolator between positive electrode piece, the negative electrode piece (electrode isolation component 3 can be stromatolite formula or coiling formula, and this paper mainly takes the coiling formula as an example), have positive electrode utmost point ear 4, negative pole utmost point ear 5 that extend respectively to electrode isolation component upper portion and lower part respectively on the electrode isolation component; the positive electrode tab 4 is connected with the positive electrode plate 6, and the negative electrode tab 5 is connected with the negative electrode plate 7.
At least one or one of the positive electrode lug and the negative electrode lug is made of conductive easily-torn sheets A, namely one or two of the positive electrode lug and the negative electrode lug can be made of the conductive easily-torn sheets A, or one section of the positive electrode lug and the negative electrode lug can be made of the conductive easily-torn sheets A, the mode can realize the function of cutting off a circuit when the internal pressure is too large, the other end of the easily-torn sheets is connected with a metal sheet 8 which is used for being fixedly connected with the inner surface of the upper shell cover or the lower shell body, the metal sheet and the inner surface of the upper shell cover or the lower shell body can be fixedly connected through welding or conductive adhesive, and the like, and the metal sheet 8 and the electrode lug can be welded, connected through conductive adhesive or anchored; the conductive easy-to-tear sheet is easy to tear and break when being pulled by certain external force, thereby cutting off the power supply of the button cell, ensuring the safety of the button cell when the internal pressure is overlarge, and the internal pressure is overlarge due to various reasons, such as overcharge or internal short circuit, etc., when the internal pressure reaches a certain degree, the battery explosion phenomenon can be generated, therefore, the conductive easy-to-tear sheet is connected between the electrode plate and the shell (the upper shell cover 1 and/or the lower shell 2), when the internal pressure is increased to a certain degree (generally, the internal pressure in the battery reaches more than 10Kpa, the danger of explosion exists, therefore, the internal pressure is generally set below 10 Kpa), the upper shell cover 1 and the lower shell 2 are bulged or displaced, namely, the conductive easy-to-tear sheet is torn, the power supply of the button cell is cut off, and the safety of the button cell when the internal pressure is overla.
In one embodiment, the conductive easily-torn sheet is an aluminum sheet, an aluminum foil, a copper sheet or a copper foil, and the aluminum sheet, the aluminum foil, the copper sheet or the copper foil is easily torn, but conductive easily-torn sheets made of other materials are also available; in order to design reasonably, facilitate tearing and not influence normal manufacture, installation and use, the thickness of the conductive easy-to-tear sheet is 6-100 microns, the preferable thickness is 15 microns, and the conductive easy-to-tear sheet can be manufactured easily and cannot be damaged easily when being installed and used under normal work.
In one embodiment, the metal sheet is a nickel sheet or a stainless steel sheet, the thickness of the metal sheet is 0.1-0.2 mm, and the metal sheet is a hard and high-strength material, is easy to weld with the shell, and is not easy to break or damage.
In one embodiment, the metal sheet 8 is circular, oval or rectangular, the conductive easy-to-tear sheet a is rectangular, and the width of the conductive easy-to-tear sheet is smaller than that of the metal sheet, so as to form a relative concave 9 between the conductive easy-to-tear sheet and the metal sheet; through above-mentioned structure for electrically conductive easy tear sheet is comparatively easily torn, when the electrically conductive easy tear sheet length of design, it is only slightly longer than the distance of sheetmetal and electrode piece, makes when upper shell cover 1 and casing 2 produce the swell or certain displacement, electrically conductive easy tear sheet can be torn promptly.
In one embodiment, in order to avoid the short circuit between the positive electrode tab, the negative electrode tab and the metal sheet directly contacting the positive electrode tab and the negative electrode tab in the isolator, the insulating patches 10 are attached to the inner surfaces of the positive electrode tab, the negative electrode tab and the metal sheet, the insulating patches 10 may be an insulating tape, such as made of polypropylene, or other insulating materials, and the structure avoids the short circuit caused by the direct contact between the inner surfaces of the positive electrode tab and the negative electrode tab and the edge of the positive electrode sheet or the negative electrode sheet.
In another embodiment, at least one of the upper case cover and the lower case is provided with a through hole 11, a metal foil layer 12 for covering the through hole is adhered on the inner surface of the upper case cover and/or the lower case at the through hole, when the internal pressure of the button cell reaches a certain value (normally, the internal pressure inside the cell reaches more than 10Kpa, there is a risk of explosion, so the internal pressure is generally set below 10 Kpa), the metal foil layer 12 is broken by the internal pressure, thereby the internal pressure of the button cell is released, and the explosion phenomenon of the button cell is avoided, the difference between the embodiment and the above embodiment is the above structure, through at least one or one section of the positive electrode tab and the negative electrode tab is made of the conductive easy-to-tear sheet material a, and the connection structure of the conductive easy-to-tear sheet material a and the metal sheet, when the internal pressure reaches a certain value, the internal pressure can not only be relieved through the, and the air current of internal pressure release also can tear electrically conductive easy tear sheet A off, thereby realize double-deck safety insurance, promptly to certain when pressure increases, and when not causing the casing to appear the swell or relative displacement, also can make electrically conductive easy tear sheet A be torn by the air current, in order to make the air current change in the electrically conductive easy tear sheet A of breaking, this electrically conductive easy tear sheet A is close to as far as possible with the position of through hole 11, because electrically conductive easy tear sheet A sets up in utmost point ear department, utmost point ear is close to the casing edge, therefore, the position setting of through hole 11 is being close to the casing edge, also the position setting of through hole 11 is in keeping away from casing middle part department.
In order to achieve a certain internal pressure at which the foil layer can be broken, the thickness of said foil layer is 5-50 micrometers, preferably 8-10 micrometers, which is designed with reference to an internal pressure above 10Kpa for the risk of explosion.
In order to be reasonable in design, the aperture of the through hole can be 2-9 mm, the metal foil layer is circular, the diameter of the metal foil layer is 5-12 mm, the metal foil layer can be fixed with the inner surface of the upper shell cover and/or the lower shell body in a welding mode, and the metal foil layer can be an aluminum foil layer or an aluminum alloy layer.
Further, in order to protect the metal foil layer from being accidentally broken when not in use, the outer surface of the upper shell cover and/or the lower shell body is provided with an easily torn protective film layer 13 at the through hole for covering the through hole, the easily torn protective film layer 13 is torn when in use, and the easily torn protective film layer 13 can be a plastic film which is fixedly adhered to the outer surface of the upper shell cover and/or the lower shell body through glue.
In another embodiment, at least one of the upper shell cover 1 and the lower shell 2 is provided with a counter bore 14, the counter bore 14 can be arranged on the inner bottom surface or the outer surface of the upper shell cover 1 and/or the lower shell 2, the depth of the counter bore 14 can be one third to five sixths of the thickness of the shell, the shape of the counter bore 14 can be round, oval or rectangular, which may be formed by stamping, chemical etching or laser ablation, etc., the counterbore 14 functions in the same way as the through-hole 11 and the metal foil layer 12, because the counter bores 14 are arranged on the upper shell cover 1 and/or the lower shell 2, the strength of the position is weak, and when a certain pressure is provided in the battery, this position is easily broken to release the pressure, and the internal pressure of the battery is usually 10Kpa or more, which may cause explosion, and therefore, this pressure can be used as a reference when designing the depth of the counterbore 14 or the thickness of the metal foil layer 12.
The above-described configuration of the present application can be applied to a button cell using a wound electrode separator assembly, and can also be applied to a button cell using a stacked electrode separator assembly.
The utility model discloses a working method of button cell explosion-proof hole structure, button cell's explosion-proof hole structure includes cover upper shell cover and lower casing that form, the middle part is equipped with the electrode isolation subassembly in lower casing and the upper shell cover, the electrode isolation subassembly includes positive electrode piece, negative electrode piece and is located between positive electrode piece, the negative electrode piece and is used for keeping apart positive, negative electrode piece's isolator, have respectively to positive electrode utmost point ear, negative pole utmost point ear that electrode isolation subassembly upper portion and lower part extend respectively on the electrode isolation subassembly; the positive electrode tab is connected with the positive electrode plate, the negative electrode tab is connected with the negative electrode plate, at least one or one section of the positive electrode tab and the negative electrode tab is made of a conductive easy-to-tear sheet, and the other end of the easy-to-tear sheet is connected with a metal sheet which is used for being fixedly connected with the inner surface of the upper shell cover or the lower shell body; when the button cell works normally, the positive electrode plate and the negative electrode plate are electrically connected with the upper shell cover and/or the lower shell through the positive electrode lug, the negative electrode lug and the metal sheet, and voltage is output on the upper shell cover and the lower shell; when the internal pressure of the expansion gas generated in the button cell reaches a certain value, the upper shell cover and the lower shell generate bulge or relative displacement, so that the conductive easy-to-tear sheet is torn off, the circuit is broken in the button cell, and the expansion gas is prevented from being generated continuously.
The utility model discloses the method of manufacturing above-mentioned button cell's explosion-proof hole structure specifically includes following step:
(1) preparing an upper shell cover, a lower shell and an electrode isolation assembly which are made of stainless steel, wherein the upper part of the electrode isolation assembly extends to form a positive electrode lug, the lower part of the electrode isolation assembly extends to form a negative electrode lug, the whole or one section of the positive electrode lug and/or the negative electrode lug is made of conductive easily-torn sheets, and the conductive easily-torn sheets are aluminum sheets or aluminum alloy sheets;
(2) the end parts of the positive electrode lug and/or the negative electrode lug are connected with a metal sheet in a welding way, the metal sheet is a nickel sheet or a stainless steel sheet, the inner surfaces of the positive electrode lug and the negative electrode lug can be attached with insulating patches, and the short circuit generated by the contact of the inner surfaces of the positive electrode lug and the negative electrode lug with the edge of the positive electrode sheet or the negative electrode sheet is avoided by attaching the insulating patches;
(3) the lower shell is internally provided with an electrode isolation assembly, and the outer surface of a cathode tab is welded with the middle part of the inner bottom surface of the lower shell;
(4) the metal sheet is welded with the upper shell cover, and the upper shell cover is pressed with the lower shell body.
Furthermore, before the first step, the upper shell cover and/or the lower shell can be provided with a through hole in advance, a metal foil layer for covering the through hole and an easy-to-tear protective film layer for covering the through hole; or at least one of the upper shell cover and the lower shell is provided with a counter bore.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses utilize above-mentioned structure to be favorable to avoiding pressing too big and producing the phenomenon of explosion in the button cell.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (10)
1. The utility model provides an explosion-proof hole structure of button cell which characterized in that: the electrode isolation assembly comprises a positive electrode plate, a negative electrode plate and an isolation body positioned between the positive electrode plate and the negative electrode plate and used for isolating the positive electrode plate and the negative electrode plate, and is provided with a positive electrode lug and a negative electrode lug which respectively extend towards the upper part and the lower part of the electrode isolation assembly; the positive pole lug is connected with the positive pole piece, the negative pole lug is connected with the negative pole piece, at least one of the upper shell cover and the lower shell is provided with a through hole, and a metal foil layer used for covering the through hole is attached to the inner surface of the upper shell cover and/or the lower shell at the through hole.
2. The explosion-proof hole structure of button cell battery according to claim 1, characterized in that: and the outer surface of the upper shell cover and/or the lower shell body is provided with an easy-to-tear protective film layer at the through hole for covering the through hole.
3. The explosion-proof hole structure of button cell battery according to claim 1, characterized in that: the thickness of the metal foil layer is 5-50 microns.
4. The explosion-proof hole structure of button cell battery according to claim 1, characterized in that: the aperture of the through hole is 2-9 mm, the metal foil layer is circular, and the diameter of the metal foil layer is 5-12 mm.
5. The utility model provides an explosion-proof hole structure of button cell which characterized in that: the electrode isolation assembly comprises a positive electrode plate, a negative electrode plate and an isolation body positioned between the positive electrode plate and the negative electrode plate and used for isolating the positive electrode plate and the negative electrode plate, and is provided with a positive electrode lug and a negative electrode lug which respectively extend towards the upper part and the lower part of the electrode isolation assembly; the positive pole lug is connected with the positive electrode plate, the negative pole lug is connected with the negative electrode plate, and at least one of the upper shell cover and the lower shell is provided with a counter bore.
6. The button cell structure according to claim 1 or 5, wherein: at least one or one section of the positive electrode lug and the negative electrode lug is made of conductive easily-torn sheets, and the other end of each conductive easily-torn sheet is connected with a metal sheet which is used for being fixedly connected with the inner surface of the upper shell cover or the lower shell body.
7. The button cell structure of claim 6, wherein: the conductive easy-tear sheet is an aluminum sheet or an aluminum alloy sheet.
8. The button cell structure of claim 6, wherein: the thickness of the conductive easy-tear sheet is 6-100 microns.
9. The button cell structure of claim 6, wherein: the metal sheet is a nickel sheet or a stainless steel sheet, and the thickness of the metal sheet is 0.1-0.2 mm.
10. The button cell structure of claim 6, wherein: the metal sheet is circular or oval, and electrically conductive easy tear sheet is the rectangle, and the width of electrically conductive easy tear sheet is less than the width of metal sheet to form relative indent between electrically conductive easy tear sheet and metal sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025300.6U CN211045559U (en) | 2019-11-21 | 2019-11-21 | Explosion-proof hole structure of button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025300.6U CN211045559U (en) | 2019-11-21 | 2019-11-21 | Explosion-proof hole structure of button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211045559U true CN211045559U (en) | 2020-07-17 |
Family
ID=71568833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922025300.6U Active CN211045559U (en) | 2019-11-21 | 2019-11-21 | Explosion-proof hole structure of button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211045559U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113383456A (en) * | 2020-11-26 | 2021-09-10 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
-
2019
- 2019-11-21 CN CN201922025300.6U patent/CN211045559U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113383456A (en) * | 2020-11-26 | 2021-09-10 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| CN113383456B (en) * | 2020-11-26 | 2023-06-02 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110854338A (en) | Explosion-proof structure of button cell and working method thereof | |
| JP4468290B2 (en) | Explosion-proof structure of secondary battery | |
| CN210535760U (en) | Electrode assembly and secondary battery | |
| EP2425475B1 (en) | Battery with battery safety vent | |
| US20140315050A1 (en) | Vent and cap assembly of power battery | |
| CN215418489U (en) | Steel shell button cell with double explosion-proof structure | |
| CN211045559U (en) | Explosion-proof hole structure of button cell | |
| JP3593709B2 (en) | battery | |
| JP3655644B2 (en) | Explosion-proof valve group and sealed secondary battery using the same | |
| CN210837915U (en) | Cathode structure and lithium-manganese dioxide battery thereof | |
| CN211578821U (en) | Explosion-proof structure of button cell | |
| CN210110948U (en) | Electrode structure of winding electrode battery | |
| JP4121130B2 (en) | Sealed battery | |
| CN211045482U (en) | Open circuit structure of button cell | |
| CN213601923U (en) | Battery top cap and battery | |
| JPH10247483A (en) | Safety structure of sealed battery | |
| WO2011118359A1 (en) | Hermetic battery | |
| JP3346675B2 (en) | Explosion-proof sealing plate for sealed batteries | |
| CN210576261U (en) | Electrode lug structure of winding electrode battery | |
| CN210110968U (en) | Lithium ion battery cell and power battery | |
| CN116210065A (en) | Power storage unit and method for manufacturing same | |
| CN217788702U (en) | Novel button type lithium battery with safe, reliable and explosion-proof functions | |
| CN215418334U (en) | Explosion-proof square lithium battery shell | |
| CN214428745U (en) | Button cell | |
| CN218472198U (en) | Explosion-proof membrane mounting structure of lithium ion power battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |