CN201008003Y - High multiplying power lithium ion battery - Google Patents
High multiplying power lithium ion battery Download PDFInfo
- Publication number
- CN201008003Y CN201008003Y CNU2007201069372U CN200720106937U CN201008003Y CN 201008003 Y CN201008003 Y CN 201008003Y CN U2007201069372 U CNU2007201069372 U CN U2007201069372U CN 200720106937 U CN200720106937 U CN 200720106937U CN 201008003 Y CN201008003 Y CN 201008003Y
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- China
- Prior art keywords
- battery
- negative
- lithium ion
- multiplying power
- cathode
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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
- 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
Abstract
The utility model relates to a lithium battery and manufacture method of the battery in fundamental electric element field, in particular to a lithium battery with high magnification, which solves the problem of large heat emission, poor magnification, and cycle function in battery high magnification charge and discharge processes of the prior art. The utility model provides a high magnification lithium battery with reasonable design, simple structure, and small heat emission when charging or discharging and good magnification and cycle function. The technical scheme of the utility model is as follows: the battery comprises a battery single chip made by an anode liquid, an anode film, a separating film, a cathode film and a cathode liquid being relayed in order, a plurality of single chips are point melded and connected in parallel into a battery single parcel, wherein the anode pole arranged at one end of the anode liquid is of the opposite direction with the cathode pole arranged at the cathode liquid one end, the anode pole and cathode pole are extracted from two ends of the battery.
Description
Technical field
The utility model belongs to the lithium ion battery and the manufacture method thereof in basic electrical component field, especially relates to a kind of high multiplying power lithium ion battery.
Background technology
Usually lithium ion battery is by battery case, battery pack, rebound, baffle, discharges and recharges combination of outlets and forms.Lithium ion battery is made generally in cylindrical and square, by positive/negative plate, barrier film, electrolyte, compositions such as shell, pole piece is made up of active material, conductive agent, additive and collector etc., and collector is generally 3-dimensional metal net or two-dimensional metallic net, the punch metal band, positive/negative plate by with lug spot welding be connected to shell positive and negative extreme on.Lug lead-out mode commonly used is to adopt negative and positive lug homonymy lead-out mode.Electric current is through positive pole ear, plus plate current-collecting body, cathode film, negative electrode film, negative current collector, derive from negative lug during charging, and discharging, then direction is opposite.
Because use occasion limits battery structure, the battery length-width ratio that has is 3: 1 even bigger.Common lithium ion cell polar ear lead-out mode is a homonymy, but the battery heating is serious during the battery high power charging-discharging of homonymy lug, and multiplying power and cycle performance are not good.Need battery structure is improved for this reason, reduce the internal resistance of cell, reduce the battery heating, improve the battery high rate performance.
At present, as a kind of domestic patent No. be CN200520035326.4 electrodes of lithium-ion batteries and electric core, its content is: a kind of electrodes of lithium-ion batteries is characterized in that: be fixed with a plurality of lugs on the described pole piece, and each lug that is fixed on the pole piece stretches out being uneven in length of pole piece part.The lug of this lithium ion battery is arranged on homonymy, and when the multiplying power that raising discharges and recharges, caloric value increases greatly, and temperature is too high, can cause heat to be assembled in battery case in the battery use, quickens battery performance and worsens.
Summary of the invention
The utility model mainly is that heating is serious when solving existing in prior technology battery high power charging-discharging, the technical problem that multiplying power and cycle performance are not good etc.; Provide a kind of reasonable in design, simple in structure, caloric value is low during high power charging-discharging, a kind of high multiplying power lithium ion battery that multiplying power and cycle performance improve.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of high multiplying power lithium ion battery, be included in the battery list bag, the battery monomer that stacks together successively by plus plate current-collecting body, cathode film, barrier film, negative electrode film, negative current collector, several monolithic spot welding parallel connections are a battery list bag, the positive pole ear that is arranged on plus plate current-collecting body one end is incorgruous with the negative lug that is arranged on negative current collector one end, and positive pole ear and negative lug are drawn from the battery two ends; Electric current flows into from an end of plus plate current-collecting body, and through cathode film, barrier film, negative electrode film, from the end outflow of negative current collector, the end that end that electric current flows into and electric current flow out is respectively the reverse two ends of battery monomer.
As preferably, described plus plate current-collecting body and negative current collector are three-dimensional collector or two-dimentional collector or metal tape; The shape of collector does not influence the setting of lug, so collector can be multiple shape.
More preferred, described plus plate current-collecting body and negative current collector are metal forming or punch metal band; The setting of collector is the setting of lug for convenience, will satisfy battery monomer simultaneously and dash the performance need of putting a little.
As preferably, the thickness of described battery monomer is between 0.3-1.5mm; It is thinner that the design is useful in battery monomer, on the bigger battery of cathode film and negative electrode film contact area.
Therefore, the utlity model has following advantage: reasonable in design, simple in structure, with low cost, be more suitable for heavy-current discharge; Caloric value is low during high power charging-discharging, and cycle performance improves; Electric current is flowed through distance equally, and resistance is even, can bring into play the performance of cell active materials simultaneously; Oppositely lug can effectively reduce battery temperature in the use, prolongs battery useful life; Littler internal resistance, the battery temperature rise is very little, and evenly distributes, and can be more suitable for heavy-current discharge, and technology is simple, is easy to produce in batches; Be fit to the low internal resistance high-multiplying-power battery design of rectangular cell lithium ion.
Description of drawings
Accompanying drawing 1 is the schematic perspective view of battery monomer of the present utility model;
Accompanying drawing 2 is left views of battery monomer of the present utility model;
Each several part is designated among the figure: 1. positive pole ear, 2. plus plate current-collecting body, 3. cathode film, 4. barrier film, 5. negative electrode film, 6. negative current collector, 7. negative lug.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
Shown in Figure 2 as Fig. 1, comprise in the battery monomer structure: cathode film, negative electrode film, barrier film, plus plate current-collecting body, negative current collector, positive pole ear, negative lug.
Cathode film and negative electrode film are separated by barrier film, and hot pressing is on plus plate current-collecting body and negative current collector respectively for cathode film and negative electrode film, and anode ear and negative electrode lug are put respectively and be welded on plus plate current-collecting body and the negative current collector.
The cathodic coating of this battery is single face hot pressing, and anode ear and negative electrode lug are oppositely draws, anode ear and negative electrode lug lay respectively at the battery two ends, anode ear and negative electrode lug are anti-phase being symmetrical arranged, so just can make electric current flow through the active material of different parts in the battery apart from unanimity, easier active material performance in the battery, the reduction internal resistance of cell, the raising battery rate charge-discharge performance brought into play simultaneously.
Electric current is welded in the inflow of the anode ear on the plus plate current-collecting body from point, process, and plus plate current-collecting body, cathode film, barrier film, negative electrode film, negative current collector, the negative electrode lug that is welded on the negative current collector from point flows out.
A plurality of battery monomers superpose in the same way and form battery list bag, and a plurality of battery list bags are formed battery.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as positive pole ear, plus plate current-collecting body, cathode film, barrier film, negative electrode film, negative current collector, negative lug morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (4)
1. high multiplying power lithium ion battery, be included in the battery list bag, the battery monomer that stacks together successively by plus plate current-collecting body (2), cathode film (3), barrier film (4), negative electrode film (5), negative current collector (6), several monolithic spot welding parallel connections are a battery list bag, it is characterized in that: the positive pole ear (1) that is arranged on plus plate current-collecting body (2) one ends is incorgruous with the negative lug (7) that is arranged on negative current collector (6) one ends, and positive pole ear (1) is drawn from the battery two ends with negative lug (7).
2. a kind of high multiplying power lithium ion battery according to claim 1 is characterized in that, described plus plate current-collecting body (2) and negative current collector (6) are three-dimensional collector or two-dimentional collector or metal tape.
3. a kind of high multiplying power lithium ion battery according to claim 1 is characterized in that, described plus plate current-collecting body (2) and negative current collector (6) are metal forming or punch metal band.
4. a kind of high multiplying power lithium ion battery according to claim 1 is characterized in that the thickness of described battery monomer is between 0.3-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201069372U CN201008003Y (en) | 2007-03-05 | 2007-03-05 | High multiplying power lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201069372U CN201008003Y (en) | 2007-03-05 | 2007-03-05 | High multiplying power lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201008003Y true CN201008003Y (en) | 2008-01-16 |
Family
ID=39003953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201069372U Expired - Fee Related CN201008003Y (en) | 2007-03-05 | 2007-03-05 | High multiplying power lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201008003Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769289A (en) * | 2020-06-18 | 2020-10-13 | 合肥国轩高科动力能源有限公司 | Welding method of flexible current collector |
| CN112117425A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
-
2007
- 2007-03-05 CN CNU2007201069372U patent/CN201008003Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117425A (en) * | 2019-06-21 | 2020-12-22 | 比亚迪股份有限公司 | Single battery, power battery pack and vehicle |
| CN111769289A (en) * | 2020-06-18 | 2020-10-13 | 合肥国轩高科动力能源有限公司 | Welding method of flexible current collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: UNIVERSAL ELECTRIC VEHICLE CO., LTD. ¬ |
|
| CU01 | Correction of utility model |
Correction item: Co-patentee Correct: Wanxiang Electric Vehicle Co Number: 03 Page: The title page Volume: 24 |
|
| CU03 | Publication of corrected utility model |
Correction item: Co-patentee Correct: Wanxiang Electric Vehicle Co Number: 03 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: UNIVERSAL ELECTRIC VEHICLE CO., LTD. ¬ |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20160305 |