CN220042211U - Steel shell battery - Google Patents
Steel shell battery Download PDFInfo
- Publication number
- CN220042211U CN220042211U CN202320497207.9U CN202320497207U CN220042211U CN 220042211 U CN220042211 U CN 220042211U CN 202320497207 U CN202320497207 U CN 202320497207U CN 220042211 U CN220042211 U CN 220042211U
- Authority
- CN
- China
- Prior art keywords
- shell
- top cover
- hole
- steel
- battery
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 7
- 239000012212 insulator Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a steel shell battery which comprises a shell, a cover body assembly and a pole core, wherein the shell is of a semi-closed structure with one end open, and the cover body assembly closes the opening of the shell so as to form a cavity for accommodating the pole core between the cover body assembly and the shell; the cover body assembly comprises a top cover, an insulating part and a connecting part, wherein the connecting part is arranged at the opening, the outer edge of the connecting part is connected with the shell, a first through hole is formed in the connecting part, and the first through hole is communicated with the cavity and the top cover; the top cover is positioned at one side of the connecting piece, which is away from the cavity, and the insulating piece is positioned between the top cover and the connecting piece; the positive pole of the pole core is electrically conducted with the top cover through the first through hole, and the negative pole of the pole core is electrically conducted with the shell. According to the steel shell battery, the welding path is shortened by arranging the connecting piece, the top cover is connected with the positive electrode of the pole core, and the width of the pole lug is increased.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a steel shell battery.
Background
With recent development of electronic products, particularly mobile devices and palm electronic products, there has been rapid development of small and portable batteries with high capacity density, particularly secondary batteries such as nickel-cadmium, nickel-hydrogen, lithium ion secondary batteries capable of repeatedly performing charge and discharge, as power sources.
The existing steel shell battery adopts a mode that an upper part shell and a lower part shell are welded together in a laser welding mode to achieve a sealing effect. The battery core leads out the positive electrode lug through the electrode post, and the negative electrode lug is connected with the shell to form a negative electrode through the whole shell. However, the above steel can battery has the following problems: the welding path is long, the probability of occurrence of welding failure is higher, the requirement on the welding process capability is high, and the production cost is higher; the size of the pole limits the width of the pole lug, thereby affecting the overall rate performance of the battery.
Disclosure of Invention
The utility model aims to provide a steel shell battery aiming at the problem of long welding path of the existing steel shell battery.
The utility model provides a steel shell battery which comprises a shell, a cover body assembly and a pole core, wherein the shell is of a semi-closed structure with one end open, and the cover body assembly closes the opening of the shell so as to form a cavity for accommodating the pole core between the cover body assembly and the shell; the cover body assembly comprises a top cover, an insulating part and a connecting part, wherein the connecting part is arranged at the opening, the outer edge of the connecting part is connected with the shell, a first through hole is formed in the connecting part, and the first through hole is communicated with the cavity and the top cover; the top cover is positioned at one side of the connecting piece, which is away from the cavity, and the insulating piece is positioned between the top cover and the connecting piece; the positive pole of the pole core is electrically conducted with the top cover through the first through hole, and the negative pole of the pole core is electrically conducted with the shell.
Optionally, the connecting piece comprises a connecting part and a receiving part, the receiving part is arranged in the shell, the receiving part is provided with a first groove, the top cover is arranged in the first groove through the insulating piece, and the first through hole is arranged at the bottom of the first groove; the connecting portion is arranged on the periphery of the bearing portion, and the lower surface of the connecting portion is welded with the end portion of the shell.
Optionally, a second groove is formed in the insulating piece, a second through hole is formed in the second groove, the second through hole is opposite to the first through hole, and the top cover is arranged in the second groove.
Optionally, a sealant is disposed between the top cover and the second groove.
Optionally, the height of the top cover is lower than or equal to the height of the second groove, and the height of the insulating piece is lower than or equal to the height of the first groove.
Optionally, the top cover is provided with a liquid injection hole, and the liquid injection hole is communicated with the first through hole.
Optionally, a boss is disposed on a surface of the top cover facing away from the cavity.
Optionally, the pole core is a winding core or a lamination, the pole core comprises a positive pole piece and a negative pole piece, the positive pole piece comprises a positive pole lug area and a positive pole coating area, the positive pole lug area is arranged on one side of the positive pole coating area, and the positive pole lug area is connected with the top cover; the negative plate comprises a negative electrode tab area and a negative electrode coating area, wherein the negative electrode tab area is arranged on one side of the negative electrode coating area, and the negative electrode tab area is connected with the shell.
Optionally, a protective adhesive is wound around one end of the positive electrode tab area, which is close to the positive electrode coating area.
Optionally, an explosion-proof valve is disposed on a surface of the housing facing away from the cavity.
According to the utility model, the outer edge of the connecting piece is welded with the end part of the shell by arranging the connecting piece, so that the welding path is shortened, and the probability of poor welding and the production cost are reduced. The top cover is arranged to serve as the positive electrode of the steel shell battery, so that the width of the lug on the pole core is increased, and the multiplying power discharging performance of the steel shell battery is enhanced. The top cover is connected with the connecting piece through the insulating piece, realizes sealedly and prevents the short circuit simultaneously.
Drawings
Fig. 1 is a schematic cross-sectional view of a steel-can battery according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a connection member of a steel-shell battery according to an embodiment of the present utility model;
fig. 3 is a schematic view of a positive plate of a steel-can battery according to an embodiment of the present utility model.
Reference numerals in the drawings of the specification are as follows:
1. a housing; 2. a pole core; 3. a cavity;
4. a top cover; 41. a liquid injection hole; 42. a boss;
5. an insulating member; 51. a second groove; 52. a second through hole;
6. a connecting piece; 61. a first through hole; 62. a connection part; 63. a receiving part; 64. a first groove;
71. a positive electrode tab region; 72. a positive electrode coating region; 73. a protective adhesive;
8. and a negative electrode tab region.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In order to illustrate the technical scheme of the utility model, the following description is made by specific examples.
As shown in fig. 1 to 3, a steel-shell battery according to an embodiment of the present utility model includes a case 1, a cover assembly and a pole core 2, wherein the case 1 is a semi-closed structure with one end open, and the cover assembly closes the opening of the case 1, so that a cavity 3 for accommodating the pole core 2 is formed between the cover assembly and the case 1. The cover body assembly comprises a top cover 4, an insulating piece 5 and a connecting piece 6, wherein the connecting piece 6 is arranged at the opening, the outer edge of the connecting piece 6 is connected with the shell 1, a first through hole 61 is formed in the connecting piece 6, and the first through hole 61 is communicated with the cavity 3 and the top cover 4. The top cover 4 is located on the side of the connecting piece 6 facing away from the cavity 3, and the insulating piece 5 is located between the top cover 4 and the connecting piece 6. The positive electrode of the pole core 2 is electrically connected with the top cover 4 through the first through hole 61, and the negative electrode of the pole core 2 is electrically connected with the shell 1.
In particular, the steel-shell battery may be a cylindrical battery or a prismatic battery, and the case 1, the top cover 4 and the connection member 6 are all made of an electrically conductive material.
In the embodiment, the outer edge of the connecting piece 6 is welded with the end part of the shell 1 by arranging the connecting piece 6, so that the welding path is shortened, and the probability of poor welding and the production cost are reduced. By arranging the top cover 4 as the positive electrode of the steel shell battery, the width of the lug on the pole core 2 is increased, so that the rate discharge performance of the steel shell battery is enhanced. The top cover 4 is connected to the connector 6 via an insulator 5, sealing is achieved and at the same time short-circuiting is prevented.
As shown in fig. 1 and 2, in some embodiments of the present utility model, the connector 6 includes a connector 62 and a receiving portion 63, the receiving portion 63 is disposed in the housing 1, the receiving portion 63 is provided with a first groove 64, the top cover 4 is disposed in the first groove 64 through the insulator 5, and the first through hole 61 is disposed at the bottom of the first groove 64. The connecting portion 62 is provided on the outer periphery of the receiving portion 63, and the lower surface of the connecting portion 62 is welded to the end portion of the housing 1. Specifically, the insulating member 5 and the first groove 64 are bonded by an insulating adhesive, and a sealing connection is achieved. By providing the first recess 64, the top cover 4 is disposed in the first recess 64, lowering the height of the steel-clad battery.
As shown in fig. 1, in some embodiments of the present utility model, the insulating member 5 is provided with a second groove 51, a second through hole 52 is formed in the second groove 51, the second through hole 52 is opposite to the first through hole 61, and the top cover 4 is disposed in the second groove 51, so that the top cover 4 is prevented from being connected to the connecting member 6, and short circuit is prevented.
In some embodiments of the present utility model, a sealant (not shown) is disposed between the top cover 4 and the second groove 51. Specifically, sealing is achieved between the outer periphery of the top cover 4 and the inner wall of the second groove 51 by dispensing.
As shown in fig. 1, in some embodiments of the present utility model, the height of the top cover 4 is lower than or equal to the height of the second groove 51, and the height of the insulating member 5 is lower than or equal to the height of the first groove 64, thereby reducing the overall height of the steel-clad battery.
As shown in fig. 1, in some embodiments of the present utility model, the top cover 4 is provided with a liquid filling hole 41, and the liquid filling hole 41 communicates with the first through hole 61.
In some embodiments of the present utility model, a boss 42 is disposed on a surface of the top cover 4 facing away from the cavity 3, so as to facilitate connection of the top cover 4 to the outside.
As shown in fig. 3, in some embodiments of the present utility model, the pole core 2 is a winding core or a lamination, and the pole core 2 includes a positive pole piece and a negative pole piece (not shown in the drawing), where the positive pole piece includes a positive pole tab area 71 and a positive pole coating area 72, the positive pole tab area 71 is disposed on one side of the positive pole coating area 72, and the positive pole tab area 71 is connected with the top cover 4. The negative electrode sheet comprises a negative electrode tab region 8 and a negative electrode coating region (not shown in the figure), wherein the negative electrode tab region 8 is arranged on one side of the negative electrode coating region, and the negative electrode tab region 8 is connected with the shell 1.
As shown in fig. 3, in some embodiments of the present utility model, a protective adhesive 73 is wound around an end of the positive electrode tab region 71 near the positive electrode coating region 72 to prevent short circuit.
In some embodiments of the utility model, the side of the housing 1 facing away from the cavity 3 is provided with an explosion-proof valve (not shown).
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents. Such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (10)
1. The steel shell battery is characterized by comprising a shell, a cover body assembly and a pole core, wherein the shell is of a semi-closed structure with one end open, and the cover body assembly closes the opening of the shell so as to form a cavity for accommodating the pole core between the cover body assembly and the shell; the cover body assembly comprises a top cover, an insulating part and a connecting part, wherein the connecting part is arranged at the opening, the outer edge of the connecting part is connected with the shell, a first through hole is formed in the connecting part, and the first through hole is communicated with the cavity and the top cover; the top cover is positioned at one side of the connecting piece, which is away from the cavity, and the insulating piece is positioned between the top cover and the connecting piece; the positive pole of the pole core is electrically conducted with the top cover through the first through hole, and the negative pole of the pole core is electrically conducted with the shell.
2. The steel-shell battery according to claim 1, wherein the connecting piece comprises a connecting part and a receiving part, the receiving part is arranged in the shell, the receiving part is provided with a first groove, the top cover is arranged in the first groove through the insulating piece, and the first through hole is arranged at the bottom of the first groove; the connecting portion is arranged on the periphery of the bearing portion, and the lower surface of the connecting portion is welded with the end portion of the shell.
3. The steel-shell battery according to claim 2, wherein a second groove is formed in the insulating member, a second through hole is formed in the second groove, the second through hole is disposed opposite to the first through hole, and the top cover is disposed in the second groove.
4. A steel can battery as claimed in claim 3 wherein a sealant is provided between the top cap and the second recess.
5. A steel can battery as claimed in claim 3 wherein the top cap has a height less than or equal to the height of the second recess and the insulator has a height less than or equal to the height of the first recess.
6. The steel can battery of claim 1, wherein is provided with annotating the liquid hole on the top cap, annotating the liquid hole and communicating with first through-hole.
7. The steel can battery of claim 1, wherein the top cap face of deviating from the cavity is provided with the boss.
8. The steel-shell battery according to claim 1, wherein the pole core is a winding core or a lamination, the pole core comprises a positive pole piece and a negative pole piece, the positive pole piece comprises a positive pole lug area and a positive pole coating area, the positive pole lug area is arranged on one side of the positive pole coating area, and the positive pole lug area is connected with the top cover; the negative plate comprises a negative electrode tab area and a negative electrode coating area, wherein the negative electrode tab area is arranged on one side of the negative electrode coating area, and the negative electrode tab area is connected with the shell.
9. The steel can battery of claim 8, wherein the one end of anodal utmost point ear district is close to anodal coating district winds and is equipped with the protection glue.
10. The steel can battery of claim 1, wherein the side of the casing facing away from the cavity is provided with an explosion-proof valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320497207.9U CN220042211U (en) | 2023-03-14 | 2023-03-14 | Steel shell battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320497207.9U CN220042211U (en) | 2023-03-14 | 2023-03-14 | Steel shell battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220042211U true CN220042211U (en) | 2023-11-17 |
Family
ID=88728008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320497207.9U Active CN220042211U (en) | 2023-03-14 | 2023-03-14 | Steel shell battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220042211U (en) |
-
2023
- 2023-03-14 CN CN202320497207.9U patent/CN220042211U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021082758A1 (en) | Top cover assembly, secondary battery, battery module and device | |
| KR100804522B1 (en) | Method for manufacturing secondary battery | |
| CN111682129A (en) | Metal shell button type lithium ion battery | |
| US20210242521A1 (en) | Secondary battery | |
| CN111933831A (en) | Button lithium battery and preparation method thereof | |
| KR101711984B1 (en) | Rechargeable battery | |
| WO2021155560A1 (en) | Battery and powered apparatus provided with battery | |
| CN115000641A (en) | End cover assembly, battery monomer, battery and power consumption device | |
| US20230126021A1 (en) | Battery | |
| CN115588769B (en) | Battery and electronic device | |
| CN112563556A (en) | Button cell packaging structure and button cell | |
| CN210110860U (en) | Top cover assembly and secondary battery | |
| KR101264425B1 (en) | Cap assembly and rechargeable battery using the same | |
| CN215342693U (en) | Battery and electronic product | |
| CN212434723U (en) | Metal shell button type lithium ion battery | |
| CN116365132A (en) | Battery, battery module and electric equipment | |
| CN210403778U (en) | Button cell for improving radial space utilization rate | |
| CN220042211U (en) | Steel shell battery | |
| CN111628212A (en) | Soft package lithium ion battery, manufacturing method thereof and electric device | |
| CN217405562U (en) | Battery upper cover and battery | |
| CN114039173B (en) | Electrochemical device, battery module and electric equipment | |
| KR20080087345A (en) | Rechargeable battery | |
| CN111786033A (en) | Forming method of button lithium battery roll core, roll core and button lithium battery comprising roll core | |
| CN220796848U (en) | Battery assembly | |
| CN217134496U (en) | Button cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |