CN2717036Y - A lithium battery - Google Patents
A lithium battery Download PDFInfo
- Publication number
- CN2717036Y CN2717036Y CNU2004200432280U CN200420043228U CN2717036Y CN 2717036 Y CN2717036 Y CN 2717036Y CN U2004200432280 U CNU2004200432280 U CN U2004200432280U CN 200420043228 U CN200420043228 U CN 200420043228U CN 2717036 Y CN2717036 Y CN 2717036Y
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- Prior art keywords
- pole
- pole piece
- lug
- same
- battery
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- Expired - Fee Related
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to a lithium battery of which the battery body is composed of pole piece groups which are mutually overlapped; each pole piece group is composed of positive and negative pole pieces which are mutually overlapped; the edge of each pole piece is provided with a pole lug; the pole pieces have positive pole pieces and negative pole pieces, which are orderly and circularly arranged; each pole piece group is composed of four pole pieces or six positive and negative pole pieces which are in one-to-one correspondence. In the pole piece groups, the pole lugs of the homopolar pole pieces are positioned at the same side of the same edge; the positions of two pole lugs are mutually staggered so as to form right and left tight parallel arrangement. When assembled, all the homopolar pole lugs are connected into integration by bundled by metal belts by using spot welding. The utility model causes the homopolar pole lugs to be parallel but not be overlapped by increasing the numbers of cutting dies for punching the pole pieces and the pole pieces in the pole piece groups, once reduces one half of the thickness of the pole lugs of some pole in the battery body, lowers the requirement to the performance of a welding machine and effectively enhances welding manufacturability, quality and comprehensive performance of products.
Description
Technical field
The utility model relates to a kind of lithium battery, is meant a kind of lithium battery structure that reduces total throat thickness between lithium battery electric core pole piece sheet and sheet especially.
Background technology
Because the advantage of all many-sides such as capacity and discharge time, the lithium battery that adopts mostly is lithium ion/lithium polymer battery now, and along with the development of lithium-ion electric pool technology, its cost performance improves constantly, cause it by all trades and professions extensive use, and the requirement of all trades and professions constantly promotes lithium battery and develops to big capacity, and big capacity just requires lithium battery to have bigger thickness, and this internal structure and Weldability to lithium battery has proposed new requirement.The normal Weldability of existing homemade ultrasonic welding machine is a 13-15 layer pole piece, and the normal Weldability of the ultrasonic welding machine of import is about 30 layers.The thickness of 0.010 millimeter of the thickness of Copper Foil, aluminium foil: 0.015 millimeter.If adopt existing welding method, on the import ultrasonic welding machine, weld, the thickness of macrocell also can only be accomplished the 6-7 millimeter.The thick battery employing that surpasses 7 millimeters occurs rosin joint easily or crosses weldering when directly the method for welding is welded, cause the welding portion of pole piece to be prone to the soldering tip of fracture, bonding machine because problem such as power output is too big and fragile, and battery pole ear also very easily blow when electric current is excessive.More and more higher to the requirement of battery capacity in the market, in order to meet the need of market, the thickness of battery reaches more than 8 millimeters possibly, so Welding Problems becomes matter of utmost importance.
Summary of the invention
The purpose of this utility model provides structure between a kind of thick type battery pole piece that reduces throat thickness.
Designed a kind of lithium battery structure according to above-mentioned purpose, electric core by mutual superposition constitutes battery, constitute battery battery core by overlapped pole piece group again, the electricity core is made up of several pole piece groups, the pole piece group is made up of the overlapped negative plate that just reaches, and the limit of each pole piece is provided with lug, and pole piece is divided into positive plate and negative plate, its pole piece group by two positive plates, two negative plates totally four pole pieces form, putting in order is positive pole, negative pole, positive pole, negative pole.In described pole piece group, the lug of same sex pole piece is positioned at the same side on one side, and is closely arranged side by side about the position of two lugs staggers to become mutually.Generally speaking, pole piece is rectangular, and the lug of same sex pole piece is positioned at the same side of same broadside, and different in nature lug is positioned on the same broadside or lays respectively on the relative broadside.During assembling, all same sex lugs are tied up the back by metal tape and are become one by spot welding.Perhaps, its pole piece group by three positive plates, three negative plates totally six pole pieces form, putting in order is positive pole, negative pole, positive pole, negative pole, positive pole, negative pole.In described pole piece group, the lug on the same sex pole piece is positioned at the same position of pole piece the same side, and the lug on the one pole piece makes progress, and respectively there is that make progress with a downward corresponding lug both sides of its two pole piece, and the lug on its three pole piece is downward.When pole piece was rectangular, the lug of same sex pole piece was positioned at the same side of same broadside, and different in nature lug is positioned at the opposite side on the same broadside, all be positioned on the same broadside same sex lug by metal tape tie up the back become one by spot welding.So far, finished the lug welding of single electric core, but a battery often is made up of several electric cores, the tradition processing mode is exactly the directly welding of cell polar ear stack back with same polarity, but operation is unpractical to what thicken at the power lithium battery like this, therefore burn-on again after adopting the metal tape of the same sex lug that will tie up several electric cores that back and lug be welded into one the mutual superposition weldering coupling together the again method of attachment of external lug has reduced throat thickness greatly.
The utility model improvements over the prior art only are to increase the cutting die of punching out pole piece, and the mould of positive/negative plate is identical, and disposing way, the direction of lug are distinguished both positive and negative polarity during with overlapping assembling.Since in the same pole piece group same sex lug be not overlapping but side by side or two corresponding sides half is respectively arranged, therefore for a battery body, the lug thickness of a certain polarity is disposable to have reduced half, greatly reduce the ultrasonic welding machine performance demands, effectively improved welding quality, The comprehensive performance, and processing technology is good.
Description of drawings
Specific embodiments
With reference to accompanying drawing.Basic structure form and the annexation of having shown pole piece, pole piece group among the utility model embodiment one given in Fig. 1～3.Have four pole pieces in the pole piece group, adopt positive and negative, positive and negative cycle arrangement mode, pole piece adopts rectangular shape during diagram.Same one side is the lug 2 of same sex pole piece as the same side of broadside on pole piece 1, it is closely arranged side by side about the position of two lugs staggers to become mutually, if promptly the lug width on first pole piece is that the distance of A from the pole piece edge is B, the distance of lug from the pole piece edge on the 3rd same sex pole piece then is A+B so.After assembled laminations is finished, all same sex lugs are banded together by metal tape and become one, welding again after promptly all positive poles are tied up with aluminium strip, welding again after all negative poles are tied up with nickel strap by spot welding.Therefore, for the battery of same thickness, need the thickness of the lug of spot welding can reduce half.Need open two cover cutting dies during enforcement.
Basic structure form and the annexation of having shown pole piece, pole piece group among the utility model embodiment two given in Fig. 4～7.Have six pole pieces in the pole piece group, the shape of pole piece and cycle arrangement mode and embodiment together, but the distribution of lug and embodiment one have significantly difference.Equally, same one side is the lug 2 of same sex pole piece as the same side of broadside on pole piece 1, and wherein the lug on the pole piece one upwards respectively has that make progress with a downward corresponding lug on two broadsides of pole piece two, and the lug on the pole piece three is downward.Opposite sex lug then is positioned at opposite side on the same broadside, and all are positioned at same sex lug on the same broadside and tie up the back by metal tape and become one by spot welding.Therefore, for the battery of same thickness, need the thickness of the lug of spot welding can reduce half.Need open three cover cutting dies during enforcement.
The processing and the assembling of Fig. 8～10 pair prior art schematically illustrate.Need open a cover cutting die during enforcement, pole piece is arranged with positive and negative endless form, positive and negative polarities are each positioned at pole piece with on both sides on one side or two corresponding sides, after the stack assembling is finished, all same sex lugs are banded together by metal tape and become one by spot welding, welding again after promptly all positive poles are tied up with aluminium strip, welding again after all negative poles are tied up with nickel strap.Finish the processing of promptly having finished after the aforementioned work monomer electricity core, again several monomers electricity cores are stacked up, negative ground is welded, can carry out the last packing of battery after having welded over against positive and negative; But at this moment along with the increasing of lug thickness, welding quality is difficult to guarantee.Therefore can adopt thinking of the present utility model, only tie up and weld aluminium strip, nickel strap enforcement welding between the monomer electricity core of back, the external lug of burn-oning again after several monomer electricity cores are coupled together finishing.
Execution mode of the present utility model can be expanded according to actual needs, merely is not confined to the example lifted, and according to the application in the prior art of same thinking, these all belong to protection range of the present utility model as described above.
Claims (10)
1, a kind of lithium battery, electric core by mutual superposition constitutes battery, constitute battery battery core by overlapped pole piece group again, the electricity core is made up of several pole piece groups, the pole piece group is made up of the overlapped negative plate that just reaches, and the limit of each pole piece (1) is provided with lug (2), and pole piece is divided into positive plate and negative plate, it is characterized in that the pole piece group by two positive plates, two negative plates totally four pole pieces form, putting in order is positive pole, negative pole, positive pole, negative pole.
2, battery structure according to claim 1 is characterized in that in described pole piece group, and the lug of same sex pole piece is positioned at the same side on one side, and is closely arranged side by side about the position of two lugs staggers to become mutually.
3, battery structure according to claim 2 is characterized in that described pole piece is rectangular, and the lug of same sex pole piece is positioned at the same side of same broadside, and different in nature lug is positioned on the same broadside or lays respectively on the relative broadside.
4,, it is characterized in that becoming one by spot welding after all same sex lugs are tied up by metal tape according to claim 1 or 2 or 3 described battery structures.
5, battery structure according to claim 4, the external lug of burn-oning again after it is characterized in that tying up the same sex lug metal tape of several electric cores that back and lug be welded into one the mutual superposition weldering coupling together again.
6, a kind of lithium battery structure, constitute battery battery core by overlapped pole piece group, the electricity core is made up of several pole piece groups, the pole piece group is made up of the overlapped negative plate that just reaches, the limit of each pole piece (1) is provided with lug (2), pole piece is divided into positive plate and negative plate, it is characterized in that the pole piece group by three positive plates, three negative plates totally six pole pieces form, putting in order is positive pole, negative pole, positive pole, negative pole, positive pole, negative pole.
7, battery structure according to claim 6, it is characterized in that in the described pole piece group lug on the same sex pole piece is positioned at the same position of pole piece the same side, lug on the one pole piece upwards, respectively there is up and down a corresponding lug both sides of its two pole piece, and the lug on its three pole piece is downward.
8, battery structure according to claim 7 is characterized in that described pole piece is rectangular, and the lug of same sex pole piece is positioned at the same side of same broadside, and different in nature lug is positioned at the opposite side on the same broadside.
9, according to claim 6 or 7 or 8 described battery structures, it is characterized in that all be positioned on the same broadside same sex lug by metal tape tie up the back become one by spot welding.
10, battery structure according to claim 9, the external lug of burn-oning again after it is characterized in that tying up the same sex lug metal tape of several electric cores that back and lug be welded into one the mutual superposition weldering coupling together again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200432280U CN2717036Y (en) | 2004-03-01 | 2004-03-01 | A lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200432280U CN2717036Y (en) | 2004-03-01 | 2004-03-01 | A lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717036Y true CN2717036Y (en) | 2005-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200432280U Expired - Fee Related CN2717036Y (en) | 2004-03-01 | 2004-03-01 | A lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717036Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190325A (en) * | 2019-05-10 | 2019-08-30 | 深圳技术大学 | Four-electrode lithium-sulfur battery, preparation method thereof and electrode electrochemical characteristic monitoring method |
-
2004
- 2004-03-01 CN CNU2004200432280U patent/CN2717036Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190325A (en) * | 2019-05-10 | 2019-08-30 | 深圳技术大学 | Four-electrode lithium-sulfur battery, preparation method thereof and electrode electrochemical characteristic monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TCL CORPORATION Free format text: FORMER OWNER: HUIZHOU TCL HYPERPOWER BATTERIES INC. Effective date: 20080912 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080912 Address after: Technical center, 8 floor, TCL Arts crafts emporium, No. 6 Goose Road South, Guangdong, Huizhou, China: 516001 Patentee after: TCL Group Co., Ltd. Address before: Building 9, TCL Yunshan Industrial Zone, Jiangbei, Guangdong, Huizhou Province, China: 516003 Patentee before: Huizhou TCL Jinneng Battery Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050810 Termination date: 20120301 |