CN216436012U - Button type lithium ion battery, combined cover suitable for button type lithium ion battery and electronic product - Google Patents
Button type lithium ion battery, combined cover suitable for button type lithium ion battery and electronic product Download PDFInfo
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- CN216436012U CN216436012U CN202122543804.4U CN202122543804U CN216436012U CN 216436012 U CN216436012 U CN 216436012U CN 202122543804 U CN202122543804 U CN 202122543804U CN 216436012 U CN216436012 U CN 216436012U
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- 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
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Abstract
The utility model relates to a lithium ion battery field discloses a knot formula lithium ion battery and be applicable to knot formula lithium ion battery's combined cover and electronic product. The combined cover includes: the cover comprises a cover outer plate, a plastic sealing ring and a cover inner plate, wherein the cover inner plate is flat, the plastic sealing ring is sheet, the end face of the cover outer plate opposite to the cover inner plate is flat, two insulated surfaces of the plastic sealing ring are respectively combined with the two opposite surfaces of the cover outer plate and the cover inner plate in a sealing mode, a through hole of the plastic sealing ring is located in the through hole of the cover outer plate, the outer edge of the plastic sealing ring exceeds the outer edge of the cover inner plate, and the outer edge of the cover outer plate exceeds the outer edge of the plastic sealing ring.
Description
Technical Field
The utility model relates to a lithium ion battery makes and application, especially relates to a knot formula lithium ion battery and be applicable to knot formula lithium ion battery's combined cover and electronic product.
Background
With the wider application of intelligent wearable products, people have wider and wider requirements on small-size lithium ion button type secondary rechargeable batteries (button type lithium ion batteries for short). Button lithium ion battery is more and more being applied to intelligence wearing product, for example be used for wireless bluetooth headset etc. along with button lithium ion battery's application is more and more wide, for example earphone etc. also more and more high to the requirement of battery.
Disclosure of Invention
An object of the embodiment of the utility model is to provide a knot formula lithium ion battery and be applicable to knot formula lithium ion battery's combined cover and electronic product, use this technical scheme to be favorable to improving knot formula lithium ion battery's leakproofness.
In a first aspect, an embodiment of the present invention provides a combined cover suitable for button type lithium ion battery, include: the plastic sealing ring sealing structure comprises a cover outer plate, a plastic sealing ring and a cover inner plate, wherein the cover inner plate is flat, the plastic sealing ring is sheet-shaped, two insulated surfaces of the plastic sealing ring are respectively combined with two opposite surfaces of the cover outer plate and the cover inner plate in a sealing mode, a through hole of the plastic sealing ring is located in the through hole of the cover outer plate, the outer edge of the plastic sealing ring exceeds the outer edge of the cover inner plate, and the outer edge of the cover outer plate exceeds the outer edge of the plastic sealing ring.
Optionally, the surfaces of the cover outer plate and the cover inner plate, which are opposite to the plastic sealing ring, are respectively provided with: the lines of the convex or concave lines are arranged,
the colloid on the two surfaces of the plastic sealing ring is completely occluded with the convex or concave lines on the surfaces of the cover outer plate and the cover inner plate which are opposite to the colloid, and the colloid on the two surfaces of the plastic sealing ring is tightly combined with the surfaces of the cover outer plate and the cover inner plate in a sealing and clinging manner.
Optionally, a first bulge which is relatively bulged to the bottom surface at the outer edge of the cover outer plate is arranged on the bottom surface of the cover outer plate facing to the interior of the button type lithium ion battery,
the outer edge of the first bulge and the outer edge of the cover outer plate have a preset gap, and when the outer edge of the cover outer plate is connected with the top end face of the wall of the top opening of the metal shell, the outer edge of the first bulge is tightly attached to the inner wall of the side wall of the metal shell.
Optionally, a second protrusion protruding relative to the bottom surface of the first protrusion is arranged on the bottom surface of the cover outer plate facing the interior of the button type lithium ion battery,
the second bulge is positioned on the inner side of the first bulge, and a preset gap is formed between the outer edge of the second bulge and the outer edge of the first bulge.
Optionally, a liquid injection hole is further formed in the cover inner plate and located in the through hole of the plastic sealing ring.
In a second aspect, the embodiment of the present invention provides a button type lithium ion battery, including:
the laminated sheet body or the winding body comprises a first pole piece and a second pole piece, a diaphragm is arranged between every two adjacent first pole pieces and second pole pieces at intervals, one of the first pole piece and the second pole piece is a positive pole piece, and the other one of the first pole piece and the second pole piece is a negative pole piece;
electrolyte, which fills the pores in the first pole piece, the second pole piece and the diaphragm in the laminated body or the wound body, and fills the gap between any two of the first pole piece, the second pole piece and the diaphragm;
the sealed shell comprises a metal shell with an opening at the top, the combined cover is connected to the opening of the metal shell in a sealing mode, the laminated body or the wound body and the electrolyte are sealed in a space formed by the metal shell and the combined cover, the outer edge of the outer cover plate of the combined cover is in laser sealing connection with the top end face of the shell wall of the opening at the top of the metal shell, the inner cover plate of the combined cover is electrically connected with a tab of the first pole piece to serve as a first electrode of a battery, and the outer cover plate or the metal shell is electrically connected with a tab of the second pole piece to serve as a second electrode of the battery.
Optionally, an explosion-proof area is arranged on the wall of the metal shell, and the thickness of the wall at the explosion-proof area is thinner than that of the wall of the metal shell.
Optionally, the button lithium ion battery further includes: the sealed nail, sealed nail laser seal weld in the top surface of lid inner panel sets up lid annotate liquid hole on the inner panel cover in the bottom surface of sealed nail, and be located sealed nail with in the laser welding orbit of lid inner panel.
In a third aspect, an embodiment of the present invention provides an electronic product, which includes any one of the above-mentioned button-type lithium ion batteries.
It is thus clear that this embodiment is detained outer edge of lithium ion battery's lid planking and the opening of metal casing adopt the abundant melting sealing of metal to combine to be connected, will fold piece body (or winding body) and electrolyte seal in sealed casing, be located the plastic sealing washer between two metal casing and realize the sealed technical scheme of casing for prior art through the compression of inside and outside metal casing, the abundant melting sealing of metal of this implementation technical scheme combines to connect more reliably, can reduce more or avoid detaining the weeping risk that lithium ion battery deposited or circulated, the reliability and the security of detaining lithium ion battery have been improved.
In addition, the combined cover of the embodiment combines the outer cover plate and the inner cover plate into a whole in an insulating way through the thermal compounding of the plastic sealing ring, the outer cover plate and the inner cover plate and the thermal compounding sealing combination of the plastic sealing ring, the outer cover plate and the inner cover plate, and the three are firmly combined together in a sealing way, so that the sealing property is ensured, the process is simple and convenient, the realization is easy, and the popularization and the application are particularly facilitated. And is particularly suitable for the thin design of the combined cover so as to improve the effective utilization space of the lithium ion battery and the capacity of the battery.
In addition, the inner cover plate of the embodiment adopts a flat plate-shaped structure, the plastic sealing ring adopts a sheet shape, the structure of the component is easy to process, and the processing cost of the combined cover is favorably reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, do not constitute an undue limitation on the invention.
Fig. 1 is a schematic perspective view of a button-type lithium ion battery provided in an embodiment of the present invention;
fig. 2 is a schematic perspective view of another button-type lithium ion battery provided in an embodiment of the present invention;
fig. 3 is a schematic view of an assembly structure of the button lithium ion battery shown in fig. 1;
fig. 4 is a schematic view of an assembly structure of the button lithium ion battery shown in fig. 2.
Reference numerals:
1: a metal housing;
2: a combined cover;
21: an outer cover plate; 211: a first through hole;
22: a cover inner plate; 221: a liquid injection hole;
23: a plastic sealing ring; 231: a second through hole;
3: and (5) sealing the nail.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided to explain the invention, but not to limit the invention.
Example 1
See fig. 1-4.
This embodiment provides a button lithium ion battery, and it mainly includes: a lamination body or a winding body (not shown), wherein the lamination body is made by a lamination process, and the winding body is made by a winding process, and is hereinafter referred to as the lamination body (or the winding body) for convenience of description. The lamination body (or the winding body) is used as a core component of electrochemical reaction of the button type lithium ion battery. The lamination (or winding) consists essentially of first and second pole pieces and a separator layer spaced between each adjacent first and second pole pieces. 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 electrolyte is filled in the laminated body (or the wound body), specifically, the pores in each of the first pole piece, the second pole piece and the separator in the laminated body (or the wound body), and the gaps between any two of the first pole piece, the second pole piece and the separator. The electrolyte may be a solid electrolyte or an electrolyte.
The laminated body (or the wound body) and the electrolyte therein are sealed in a sealed shell of the button-type lithium ion battery, wherein the sealed shell is composed of a metal shell 1 and a combined cover 2, and the metal shell 1 can be but is not limited to a steel shell. An opening is provided at the top of the metal case 1, and the composite cover 2 is sealed at the opening.
The combined cover 2 of the present embodiment includes a plastic sealing ring 23, and an outer cover plate 21 and an inner cover plate 22 made of metal material. The cover inner plate 22 is flat plate-shaped, and the plastic seal ring 23 is sheet-shaped. The cover outer plate 21 and the cover inner plate 22 are respectively attached to two surfaces of the plastic seal ring 23 in a sealing manner, and can be combined with the two surfaces of the plastic seal ring 23 in a sealing manner in a thermal compounding manner. The inner cover plate 22 is used as the center of the inner layer of the combined cover 2, the plastic seal ring 23 and the outer cover plate 21 are arranged from inside to outside in sequence, the outer diameter of the outer cover plate 21 is wider than the outer diameter of the plastic seal ring 23, and the outer edge of the outer cover plate 21 is positioned outside the plastic seal ring 23 and is used as the outer edge of the outer cover plate 21.
The lid outer plate 21 and the plastic seal ring 23 are annular, and a through hole (respectively referred to as a first through hole 211 and a second through hole 231) is formed at the center of the lid outer plate 21 and the plastic seal ring 23. The diameter of the first through hole 211 is greater than that of the second through hole 231, and the diameters of the first through hole 211 and the second through hole 231 are both less than that of the cover inner plate 22, the second through hole 231 is located in the first through hole 211221 of the cover outer plate 21, the outer edge of the plastic sealing ring 23 exceeds the outer edge of the cover inner plate 22, the outer edge of the cover outer plate 21 exceeds the outer edge of the plastic sealing ring 23, the plastic sealing ring 23 is combined with the cover inner plate 22 and the cover outer plate 21 on the two surfaces thereof to be connected into a whole in a sealing manner, so that the combined cover 2 is of an integrated structure, and an insulation interval is provided for the cover inner plate 22 and the cover outer plate 21.
During assembly, a first tab (connected with the first pole piece) on the lamination body (or the winding body) is connected to the cover inner plate 22, and the cover inner plate 22 is used as a first electrode of the lithium ion battery; the second tab (connected to the second tab) on the laminated body (or the wound body) is connected to the bottom surface of the lid outer plate 21 or the second tab is connected to any one position of the metal case 1, and the lid outer plate 21 and the metal case 1 are used as the second electrode of the lithium ion battery. Wherein one of the first electrode and the second electrode is a positive electrode, and the other is a negative electrode. After the first electrode and the second electrode are connected with the cover outer plate 21 and the cover inner plate 22, the laminated body (or the winding body) is assembled in the metal shell 1, the combined cover 2 is covered on the top opening of the metal shell 1, the outer edge of the cover outer plate 21 is covered on the top end surface of the opening of the metal shell 1, the outer edge is as wide as the outer wall of the shell wall of the metal shell 1, the laser welding is carried out, the bottom surface of the outer edge of the cover outer plate 21 and the metal material of the top end surface of the shell wall of the top opening of the metal shell 1 are fused, sealed and combined into a whole, and the sealing connection between the combined cover 2 and the metal shell 1 is realized.
When the button lithium ion battery of this embodiment uses the electrolyte as the electrolyte, a liquid injection hole may be further disposed on the cover inner plate 22, and the liquid injection hole is located in the first through hole 231 of the cover inner plate 22 on the combined cover 2. After sealed combined cover 2, carry out under vacuum environment and carry out electrolyte through annotating the liquid hole and pour into, annotate the liquid hole encapsulation after annotating the liquid, wherein annotate the liquid hole encapsulation and can adopt the embedding sealed steel column in annotating the liquid downthehole realization, also can but not limited to adopt following technical scheme to realize: cover a sealed nail 3 at the top surface that outwards covers of lid inner panel 22, the top surface of sealed nail 3 is pasted face to face with the top surface of lid inner panel 22, sealed nail 3 covers on annotating the liquid hole, and sealed nail 3's border surpasss annotates outside annotating the liquid hole predetermined width, around annotating liquid hole laser welding sealed nail 3, form a confined annular laser welding orbit at sealed nail 3's top surface, laser welding orbit department, sealed nail 3 and lid inner panel 22's metal material melting sealing combination are integrative, annotate the liquid hole and surrounded by this laser welding orbit, the sealing of annotating the liquid hole has been realized. In this embodiment pours electrolyte into sealed casing through annotating liquid hole 221 behind sealed lamination body (or winding body), avoid the pollution of electrolyte to sealed casing before sealed, improve the accuracy and the controllability of the volume of pouring of electrolyte, improved the efficiency of technology. In addition, for the sealed scheme of the liquid hole of annotating of downthehole embedding steel column of liquid of prior art, adopt the technical scheme of this embodiment, because the laser welding orbit has certain distance with annotating the liquid hole, can effectively avoid remaining in the electrolyte that annotates liquid hole department and lead to the bad problem of laser welding, ensure to annotate the sealing performance in liquid hole, and the implementation of this embodiment technical scheme is more convenient.
As can be seen from the above, in the button-type lithium ion battery of the present embodiment, the combination cover 2 sealingly bonds the cover inner plate 22 and the cover outer plate 21, which are the positive and negative electrodes of the button-type lithium ion battery, through the plastic sealing ring 23, so that the whole combination cover 2 is an integrated structure. During assembly, the outer edge of the combined cover 2 and the top end face of the top opening of the metal shell 1 only need to be welded together by laser, and the assembly is convenient and easy to implement.
In addition, the cover inner plate 22 of the embodiment adopts a flat plate-shaped structure, the plastic sealing ring 23 adopts a sheet shape, and the structure of each component of the combined cover 2 is simple and easy to process, which is beneficial to reducing the processing cost of the combined cover 2.
The laser welding sealing connection between the combined cover 2 and the metal shell 1 is reliable, the leakage risk of the button lithium ion battery after storage or circulation is reduced or avoided, and the reliability and the safety of the button lithium ion battery are improved.
In the present embodiment, the plastic sealing ring 23, the cover inner plate 22 and the cover outer plate 21 can be combined by, but not limited to, the following processes: the high-temperature heat sealing head is pressed on the pre-placed plastic sealing ring 23, the cover inner plate 22 and the cover outer plate 21, the colloid on the two surfaces of the plastic sealing ring 23 is melted at high temperature and is fully combined with the surfaces of the cover inner plate 22 and the cover outer plate 21 on the surface side at certain pressure and high temperature, the pressure is kept for certain time, and the colloid is cooled, solidified and molded and is combined with the surfaces of the cover inner plate 22 and the cover outer plate 21 on the two sides in a sealing way to form an integrated structure. The process is favorable for ensuring the sealing property, is simple and convenient, is easy to realize and is favorable for popularization and application. And the thin design of the combined cover 2 is facilitated, so that the effective utilization space of the lithium ion battery is improved, and the capacity of the battery is improved.
In addition, when the plastic sealing ring 23 is melted at a high temperature, under the action of pressure, hot-pressing is performed for a predetermined time, the hot-melt adhesive is in full contact with the surfaces of the inner cover plate 22 and the outer cover plate 21 to fully fill the concave grooves (or the grooves between the convex grooves) on the surfaces and the surfaces of the concave grooves (or the surfaces of the grooves between the convex grooves) to keep the pressure standing or cooling, the adhesive is solidified and molded, the plastic sealing ring 23 is hermetically combined with the inner cover plate 22 and the outer cover plate 21, and the adhesive on the two surfaces of the plastic sealing ring 23 forms a structure in which the concave grooves (or the convex grooves) of the inner cover plate and the outer cover plate 21 are embedded and engaged with each other The sealing and combining area of the cover outer plate 21 is increased, and the sealing and combining tightness among the cover outer plate, the cover outer plate and the cover outer plate is improved.
As an illustration of the present embodiment, when the combination cover 2 and the metal shell 1 are connected, the combination cover 2 may be fixed to the metal shell 1 with the cover inner plate 22 facing outward and the cover outer plate 21 facing inward of the metal shell 1 as shown in fig. 2 and 4; as shown in fig. 1 and 3, the outer cover plate 21 faces outwards, and the inner cover plate 22 faces the inside of the metal shell 1, so that the combined cover 2 is fixed on the metal shell 1.
As an illustration of the present embodiment, a first protrusion may be provided on a surface (referred to as a bottom surface) of the lid outer panel 21 facing the inside of the sealed case, the bottom surface at the outer edge of the first protrusion being opposite to the bottom surface at the outer edge of the lid outer panel 21, and the distance between the outer edge of the first protrusion and the outer edge of the cover outer plate 21 is equal to or slightly larger than the thickness of the side wall of the metal shell 1, so that when the combined cover 2 covers the top opening of the metal shell 1, the first bulge of the cover outer plate 21 is tightly attached to the side wall of the metal shell 1, the bottom surface of the cover outer plate 21 positioned on the periphery of the first bulge is covered on the top end surface of the side wall of the metal shell 1, the outer edge of the cover outer plate 21 is flush with the outer wall of the side wall of the metal shell 1, and the laser welding enables the metal materials of the cover outer plate 21 and the top end surface of the top opening of the metal shell 1 to be fused and combined, so that the combined cover 2 is hermetically connected with the metal shell 1. Since the first protrusion is provided on the outer cover plate 21 of the present embodiment, when positioning the composite cover 2, the outer edge of the first protrusion can be matched with the inner wall of the side wall of the metal shell 1, so as to accurately position the composite cover 2, thereby improving the laser welding efficiency and effect of the composite cover 2 and improving the work efficiency.
A second protrusion may be further disposed on the bottom surface of the cover outer plate 21, the bottom surface of the second protrusion is further protruded relative to the bottom surface of the first protrusion, and an outer edge of the second protrusion is located on an inner circumference of an outer edge of the first protrusion and has a predetermined narrow gap with the outer edge of the first protrusion. Thus, after assembly, the second protrusion limits the laminated body (or the winding body) under the second protrusion, so that a certain gap is formed between the top of the laminated body (or the winding body) and the laser welding position of the cover outer panel 21 and the top opening of the metal shell 1 to avoid direct contact with the laser welding position, and high heat energy during laser welding is prevented from being transmitted to the laminated body (or the winding body) to cause damage. Experiments prove that the technical scheme of the embodiment is favorable for greatly reducing the reject ratio of the button type lithium ion battery.
As an illustration of the present embodiment, the first protrusion and the second protrusion formed on the bottom surface of the lid outer panel 21 may be formed by, but not limited to, punching and bending the lid outer panel 21.
As an illustration of the present embodiment, in the metal shell 1 of the present embodiment, but not limited to, an explosion-proof area may be further disposed on a bottom end surface of the metal shell 1 opposite to the combination cover 2, wherein a thickness of a shell wall of the explosion-proof area is thinner than a thickness of a shell wall at other positions, and is about 50% to 90% of the thickness of the shell wall at other positions. The shape of the explosion-proof area can be various shapes, such as but not limited to a circular ring, and the ring width of the circular ring is about 0.05-0.2 mm. The formation of the explosion-proof area can be realized by, but not limited to, laser engraving, and the laser intensity is adjusted to a predetermined intensity to form the explosion-proof area with a predetermined shape on the metal shell 1.
The button type lithium ion battery of the embodiment can be applied to various electronic products, such as a smart watch and the like, and is used as a rechargeable power supply of the electronic products.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (9)
1. A combined cover suitable for a button type lithium ion battery is characterized by comprising: the plastic sealing ring sealing structure comprises a cover outer plate, a plastic sealing ring and a cover inner plate, wherein the cover inner plate is flat, the plastic sealing ring is sheet-shaped, two insulated surfaces of the plastic sealing ring are respectively combined with two opposite surfaces of the cover outer plate and the cover inner plate in a sealing mode, a through hole of the plastic sealing ring is located in the through hole of the cover outer plate, the outer edge of the plastic sealing ring exceeds the outer edge of the cover inner plate, and the outer edge of the cover outer plate exceeds the outer edge of the plastic sealing ring.
2. The combination cover suitable for button lithium ion battery as claimed in claim 1,
the surfaces of the cover outer plate and the cover inner plate, which are opposite to the plastic sealing ring, are respectively provided with: the lines of the convex or concave lines are arranged,
the colloid on the two surfaces of the plastic sealing ring is completely occluded with the convex or concave lines on the surfaces of the cover outer plate and the cover inner plate which are opposite to the colloid, and the colloid on the two surfaces of the plastic sealing ring is tightly combined with the surfaces of the cover outer plate and the cover inner plate in a sealing and clinging manner.
3. The combination cover suitable for button lithium ion battery as claimed in claim 1,
a first bulge which is relatively bulged to the bottom surface at the outer edge of the cover outer plate is arranged on the bottom surface of the cover outer plate facing the interior of the button type lithium ion battery,
the outer edge of the first bulge and the outer edge of the cover outer plate have a preset gap, and when the outer edge of the cover outer plate is connected with the top end face of the wall of the top opening of the metal shell, the outer edge of the first bulge is tightly attached to the inner wall of the side wall of the metal shell.
4. The combination cover suitable for button lithium ion battery as claimed in claim 3,
a second bulge which is relatively bulged to the bottom surface of the first bulge is also arranged on the bottom surface of the cover outer plate facing the interior of the button type lithium ion battery,
the second bulge is positioned on the inner side of the first bulge, and a preset gap is formed between the outer edge of the second bulge and the outer edge of the first bulge.
5. The combination cover suitable for button lithium ion battery as claimed in claim 3,
and a liquid injection hole is also formed in the cover inner plate and is positioned in the through hole of the plastic sealing ring.
6. A button type lithium ion battery is characterized by comprising:
the laminated sheet body or the winding body comprises a first pole piece and a second pole piece, a diaphragm is arranged between every two adjacent first pole pieces and second pole pieces at intervals, one of the first pole piece and the second pole piece is a positive pole piece, and the other one of the first pole piece and the second pole piece is a negative pole piece;
electrolyte, which fills the pores in the first pole piece, the second pole piece and the diaphragm in the laminated body or the wound body, and fills the gap between any two of the first pole piece, the second pole piece and the diaphragm;
the sealed shell comprises a metal shell with an opening at the top, the combined cover of any one of claims 1 to 5 is hermetically connected at the opening of the metal shell,
the laminated body or the winding body and the electrolyte are sealed in a space formed by the metal shell and the combined cover, the outer edge of the outer cover plate of the combined cover is connected with the top end surface of the shell wall with the top opening of the metal shell in a laser sealing way,
the inner cover plate of the combined cover is electrically connected with the tab of the first pole piece to be used as a first electrode of the battery,
and the cover outer plate or the metal shell is electrically connected with a lug of the second pole piece to be used as a second electrode of the battery.
7. The lithium ion button cell according to claim 6,
an explosion-proof area is arranged on the shell wall of the metal shell, and the thickness of the shell wall at the explosion-proof area is thinner than that of the shell wall of the metal shell.
8. The lithium ion button cell according to claim 6,
the button lithium ion battery further comprises: the sealed nail, sealed nail laser seal weld in the top surface of lid inner panel sets up lid annotate liquid hole on the inner panel cover in the bottom surface of sealed nail, and be located sealed nail with in the laser welding orbit of lid inner panel.
9. An electronic product, comprising the lithium ion battery according to any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122543804.4U CN216436012U (en) | 2021-10-20 | 2021-10-20 | Button type lithium ion battery, combined cover suitable for button type lithium ion battery and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122543804.4U CN216436012U (en) | 2021-10-20 | 2021-10-20 | Button type lithium ion battery, combined cover suitable for button type lithium ion battery and electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216436012U true CN216436012U (en) | 2022-05-03 |
Family
ID=81332433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122543804.4U Active CN216436012U (en) | 2021-10-20 | 2021-10-20 | Button type lithium ion battery, combined cover suitable for button type lithium ion battery and electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216436012U (en) |
-
2021
- 2021-10-20 CN CN202122543804.4U patent/CN216436012U/en active Active
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