CN114039136A - Welding steel shell battery cell - Google Patents
Welding steel shell battery cell Download PDFInfo
- Publication number
- CN114039136A CN114039136A CN202111308562.9A CN202111308562A CN114039136A CN 114039136 A CN114039136 A CN 114039136A CN 202111308562 A CN202111308562 A CN 202111308562A CN 114039136 A CN114039136 A CN 114039136A
- Authority
- CN
- China
- Prior art keywords
- upper cover
- insulating
- lower extreme
- welded steel
- hole
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 238000003466 welding Methods 0.000 title claims abstract description 14
- 239000004568 cement Substances 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims abstract 2
- 239000003292 glue Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 10
- 238000007731 hot pressing Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/153—Lids or covers characterised by their shape for button or coin cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a welded steel shell battery cell. Welding box hat electricity core include the lid subassembly, accept in core and locate in the lid subassembly film on the lid subassembly, the lid subassembly includes the upper cover, is fixed in connecting piece on the upper cover and clamp are located the upper cover with insulating cement between the connecting piece, the upper cover is lower extreme open-ended cavity tubular structure, the diameter of film is greater than the diameter of upper cover, the upper surface of film is fixed with the welded mode the lower extreme of upper cover, in order the shutoff the lower extreme opening of upper cover. The welded steel shell battery cell provided by the invention is convenient to assemble and high in reliability.
Description
Technical Field
The invention relates to a welded steel shell battery cell.
Background
Nowadays, the TWS battery cell steel shell structure is more and more complicated than a soft package, so that the manufacturing process is more, the efficiency is also low, and the TWS battery cell has more advantages, but the cost is high due to the more and more complicated processes, the assembly is complicated, and the reliability is lower.
Disclosure of Invention
Based on the structure, the welding steel shell battery cell is convenient to assemble and high in reliability.
The welded steel shell battery cell comprises a cover body assembly, a winding core accommodated in the cover body assembly and a negative film arranged on the cover body assembly, wherein the cover body assembly comprises an upper cover, a connecting piece fixed on the upper cover and insulating glue clamped between the upper cover and the connecting piece, the upper cover is of a hollow cylindrical structure with an opening at the lower end, the diameter of the negative film is larger than that of the upper cover, and the upper surface of the negative film is fixed at the lower end of the upper cover in a welded mode so as to seal the opening at the lower end of the upper cover.
Furthermore, the upper cover includes lower extreme open-ended upper cover main part, set up on the up end of upper cover main part communicate external with the first through-hole of the inner chamber of upper cover main part, the connecting piece includes connecting body and protruding the bulge of locating on the connecting body, the bulge stretches into to in the first through-hole, insulating cement includes insulating body, insulating body connects upper cover main part with connecting body, insulating body is last to be seted up and to be link up the second through-hole of both ends face about the insulating body, the pore wall cladding of second through-hole in all sides of bulge.
Furthermore, the insulating glue is fixedly connected with the upper cover main body and the connecting main body in a hot-pressing sealing mode.
Further, the insulating glue is PP glue.
Further, the connecting member is made of an aluminum material.
According to the welded steel shell battery cell, the junction of the bottom sheet and the upper cover is sealed and reinforced by laser welding, a protective winding core is isolated, the internal winding core is not damaged completely, the reliability of the product is improved, and the performance of the product is improved; because the negative plate with the large diameter is adopted, light rays in the laser welding process completely resist the outside of the upper cover, the reliability is improved, and the part with the diameter larger than the diameter is cut off after the laser welding, so that the diameter of a product is not influenced.
According to the welded steel shell battery cell, the insulating glue is melted at a proper temperature to connect the upper cover and the connecting piece, and meanwhile, sealing and insulating effects are achieved, after the cover body assembly is assembled in place, the peripheral wall of the first through hole is completely sealed, the battery cell and the negative plate are sleeved and positioned, the sealing performance is good, and industrial innovation is achieved.
According to the welded steel shell battery cell, the annular insulating glue not only plays a role in sealing and insulating, but also plays a role in fixing the battery cell, the upper cover and the bottom plate, so that corresponding processes are reduced, the manufacturing efficiency of the steel shell battery cell is greatly improved, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a welded steel-clad cell according to the present invention;
fig. 2 is a schematic structural diagram of a cover assembly of the welded steel-clad cell shown in fig. 1.
Description of reference numerals:
the cover assembly 1, the bottom plate 2, the upper cover 11, the upper cover main body 111, the first through hole 112, the insulating glue 12, the insulating main body 121, the second through hole 122, the connecting member 13, the connecting main body 131, and the protrusion 132.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1 and 2, the invention provides a welded steel-clad electrical core, which includes a cover assembly 1, a core accommodated in the cover assembly, and a bottom sheet 2 disposed on the cover assembly, wherein the cover assembly includes an upper cover 11, a connecting member 13 fixed on the upper cover, and an insulating adhesive 12 sandwiched between the upper cover and the connecting member, the upper cover is in a hollow cylindrical structure with an opening at a lower end, the diameter of the bottom sheet is greater than that of the upper cover, and the upper surface of the bottom sheet is fixed at the lower end of the upper cover in a welded manner to plug the opening at the lower end of the upper cover.
The film and the junction of the upper cover are sealed and reinforced by laser welding, the protective roll core is isolated, the internal roll core is not damaged completely, the reliability of the product is improved, and the performance of the product is improved.
The negative plate with the large diameter is adopted, so that light rays in the laser welding process completely resist the outside of the upper cover, the reliability is improved, and the part larger than the diameter of the upper cover is cut off after laser welding, so that the diameter and the attractiveness of a product are not influenced.
In one embodiment, the upper cover includes an upper cover main body 111 with an opening at a lower end, a first through hole 112 communicating with the outside and an inner cavity of the upper cover main body is formed in an upper end surface of the upper cover main body, the connecting member includes a connecting body 131 and a protruding portion 132 protruding from the connecting body, the protruding portion extends into the first through hole, the insulating glue includes an insulating main body 121, the insulating main body is connected with the upper cover main body and the connecting body, a second through hole 122 penetrating through upper and lower end surfaces of the insulating main body is formed in the insulating main body, and a hole wall of the second through hole is coated on a peripheral side of the protruding portion to seal a gap between the upper cover and the connecting member.
In one embodiment, the insulating glue is fixedly connected with the upper cover main body and the connecting main body in a hot-pressing sealing manner.
In one embodiment, the insulating glue is a PP glue. Wherein, the lid subassembly has the PP insulating cement, first through-hole is sealed all around, and it is better to adopt hot-pressing sealing technique sealed effect.
In one embodiment, the connector is made of an aluminum material.
According to the welded steel shell battery cell, the junction of the bottom sheet and the upper cover is sealed and reinforced by laser welding, a protective winding core is isolated, the internal winding core is not damaged completely, the reliability of the product is improved, and the performance of the product is improved; because the negative plate with the large diameter is adopted, light rays in the laser welding process completely resist the outside of the upper cover, the reliability is improved, and the part with the diameter larger than the diameter is cut off after the laser welding, so that the diameter of a product is not influenced.
According to the welded steel shell battery cell, the insulating glue is melted at a proper temperature to connect the upper cover and the connecting piece, and meanwhile, the sealing, fixing and insulating effects are achieved, after the cover body assembly is assembled in place, the peripheral wall of the first through hole is completely sealed, the battery cell and the negative plate are sleeved and positioned, the sealing performance is good, and industrial innovation is achieved.
According to the welded steel shell battery cell, the annular insulating glue not only plays a role in sealing and insulating, but also plays a role in fixing the battery cell, the upper cover and the bottom plate, so that corresponding processes are reduced, the manufacturing efficiency of the steel shell battery cell is greatly improved, and the cost is reduced.
The above examples only express embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The utility model provides a welding box hat electricity core which characterized in that: including the lid subassembly, accept in roll up the core in the lid subassembly and locate film on the lid subassembly, the lid subassembly includes the upper cover, is fixed in connecting piece on the upper cover and clamp are located the upper cover with insulating cement between the connecting piece, the upper cover is lower extreme open-ended cavity tubular structure, the diameter of film is greater than the diameter of upper cover, the upper surface of film is fixed with the welded mode the lower extreme of upper cover is in order to the shutoff the lower extreme opening of upper cover.
2. The welded steel can cell of claim 1, wherein: the upper cover includes lower extreme open-ended upper cover main part, set up on the up end of upper cover main part communicate external with the first through-hole of the inner chamber of upper cover main part, the connecting piece includes connecting body and protruding locating the last bulge of connecting body, the bulge stretches into in the first through-hole, the insulating cement includes insulating body, insulating body connects the upper cover main part with connecting body, insulating body is last to have seted up and has link up the second through-hole of both ends face about the insulating body, the pore wall cladding of second through-hole in all sides of bulge.
3. The welded steel can cell of claim 2, wherein: the insulating glue is fixedly connected with the upper cover main body and the connecting main body in a hot-pressing sealing mode.
4. The welded steel can cell of claim 3, wherein: the insulating glue is PP glue.
5. The welded steel can cell of claim 4, wherein: the connecting member is made of an aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308562.9A CN114039136A (en) | 2021-11-05 | 2021-11-05 | Welding steel shell battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308562.9A CN114039136A (en) | 2021-11-05 | 2021-11-05 | Welding steel shell battery cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114039136A true CN114039136A (en) | 2022-02-11 |
Family
ID=80143089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111308562.9A Pending CN114039136A (en) | 2021-11-05 | 2021-11-05 | Welding steel shell battery cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114039136A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162207A (en) * | 2020-03-06 | 2020-05-15 | 广东中科瑞龙精密技术有限公司 | Wearable battery structure beneficial to promotion of mass production |
| CN113394442A (en) * | 2021-06-28 | 2021-09-14 | 新余赣锋电子有限公司 | Button cell structure |
| CN217035801U (en) * | 2021-11-05 | 2022-07-22 | 新余赣锋电子有限公司 | Welding steel shell battery cell |
-
2021
- 2021-11-05 CN CN202111308562.9A patent/CN114039136A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162207A (en) * | 2020-03-06 | 2020-05-15 | 广东中科瑞龙精密技术有限公司 | Wearable battery structure beneficial to promotion of mass production |
| CN113394442A (en) * | 2021-06-28 | 2021-09-14 | 新余赣锋电子有限公司 | Button cell structure |
| CN217035801U (en) * | 2021-11-05 | 2022-07-22 | 新余赣锋电子有限公司 | Welding steel shell battery cell |
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