CN102130366B - Using method of columnar nickel and nickel-metal hydride battery diaphragm - Google Patents
Using method of columnar nickel and nickel-metal hydride battery diaphragm Download PDFInfo
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- CN102130366B CN102130366B CN2010100016302A CN201010001630A CN102130366B CN 102130366 B CN102130366 B CN 102130366B CN 2010100016302 A CN2010100016302 A CN 2010100016302A CN 201010001630 A CN201010001630 A CN 201010001630A CN 102130366 B CN102130366 B CN 102130366B
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- barrier film
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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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- 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 invention belongs to the technical field of nickel-metal hydride batteries and provides a using method of a columnar nickel-metal hydride battery diaphragm. A diaphragm with large surface density, strong piercing-resisting capacity and small compression amount after being wound is selected, the other diaphragm with relatively low surface density, relatively weak piercing-resisting capacity and relatively large compression amount after being wound is selected, the two diaphragms are connected together for use, an overlapped part is remained on the diaphragms in the length direction; when being wound, the diaphragm with large surface density, strong piercing-resisting capacity and small compression amount after being wound is used for wrapping an anode, and the diaphragm with relatively low surface density, relatively weak piercing-resisting capacity and relatively large compression amount after being wound is used for wrapping a cathode. According to the using method of the columnar nickel-metal hydride battery diaphragm, the diaphragm with large surface density, strong piercing-resisting capacity and small compression amount is used for wrapping the anode, the wound anode has smaller cracks and burrs; and the diaphragm with low surface density and large compression amount is used for wrapping the cathode, therefore, a wound pole group is easy to load in a container, and 0-volt proportion and low-voltage proportion of the battery are remarkably improved.
Description
Technical field
The present invention relates to the Ni-MH battery manufacture method, relate in particular to a kind of cylindrical nickel-metal hydride battery barrier film using method.
Background technology
There is this specific character in Ni-MH battery, about negative electrode active material gram volume 330mAh/g, and negative electrode active material packed density 6.5g/cm
3About.About positive active material gram volume 250mAh/g, positive active material packed density 3.1g/cm
3About.In suitable negative positive Capacity Ratio situation, negative pole thickness is generally at 0.20 ~ 0.32mm, and anodal thickness is generally at 0.60 ~ 0.80mm.Behind coiling, because positive pole is thicker, positive pole often produces larger burr, crackle like this.And burr and crackle less that negative pole produces.
Traditional barrier film using method is to adopt a kind of barrier film to reel.The drawback of doing like this: when producing high-capacity battery, use the barrier film that surface density is little, decrement is large, reel easily, but coiling zero volt large percentage, battery storing low pressure and zero volt ratio are large; When using the barrier film that surface density is large, decrement is little, reeling is difficult to the container of packing into.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of cylindrical nickel-metal hydride battery barrier film using method of the low easy assembling of zero volt ratio of reeling is provided.
For achieving the above object, the technical solution used in the present invention is:
A kind of cylindrical nickel-metal hydride battery barrier film using method, it is characterized in that: select that a kind of barrier film surface density is large, the anti-puncture ability strong, reel after decrement little, select that another kind of barrier film surface density is relatively low, the anti-puncture ability is relatively weak, reel after decrement relatively large, with the use that links together of two kinds of barrier films, it is overlapping to leave a part at the barrier film length direction; During coiling, the barrier film bag large with surface density, that the anti-puncture ability is strong, the coiling decrement is little is anodal, the barrier film bag negative pole relatively low with surface density, that the anti-puncture ability is relatively weak, the coiling decrement is relatively large.
The lap length of described two kinds of barrier films is 10-30mm, connects in overlapping centre position.
Described two kinds of barrier films are by the metal bar hot compression welding of 0.1-2mm width.
The anodal barrier film of described bag is longer than bag negative pole barrier film.
Barrier film using method of the present invention, utmost point group rolled electrode is placed sequencing and coiling direction is not limit, and coiling can be put first positive pole, also can put first negative pole; Can reel clockwise, also can reel counterclockwise, article of the present invention is put first anodal clockwise winding method: positive pole is positioned on the anodal barrier film of bag, and will wrap exceeding of anodal barrier film anodal terminal lap and turn down and cover on positive pole; Place the volume pin along fold line at last, will wrap the turnover of negative pole barrier film along the volume pin and cover on positive pole, place negative pole at bag negative pole barrier film, and reel clockwise as the axle center take the volume pin.
Beneficial effect of the present invention: adopt the barrier film bag that surface density is large, decrement is little, the anti-puncture ability is strong anodal, can effectively stop anodal crackle, burr to pierce through barrier film behind the coiling and cause battery short circuit or micro-short circuit; Adopt the barrier film bag negative pole that surface density is little, decrement is large, the utmost point group of reeling the so afterwards container of packing into easily, and the zero volt ratio of battery and low pressure ratio obviously improve.
Description of drawings
Fig. 1 is for wrapping according to the preferred embodiment of the invention anodal barrier film and bag negative pole barrier film connection diagram.
Fig. 2 is the schematic diagram after the anodal according to the preferred embodiment of the invention placement.
The schematic diagram of Fig. 3 after for the lap turnover of wrapping according to the preferred embodiment of the invention anodal barrier film.
Fig. 4 places schematic diagram for rolling up according to the preferred embodiment of the invention pin.
Fig. 5 is for wrapping according to the preferred embodiment of the invention the schematic diagram after the negative pole barrier film turns down.
Fig. 6 is the schematic diagram after negative pole is placed according to the preferred embodiment of the invention.
Fig. 7 is the anti-puncture aptitude tests of barrier film device schematic diagram according to the preferred embodiment of the invention.
Embodiment
Select two kinds of barrier films, the NKK-115 barrier film that the FV4384 barrier film that Japanese JVC company makes and Japanese NKK company make carries out the contrast of compressive resistance ability, the contrast of anti-puncture ability, surface density contrast, and selected barrier film model and result are as shown in table 1.
Table 1
Wherein, the method for acupuncture is adopted in the anti-puncture aptitude tests, the anti-puncture ability of test barrier film.
Test philosophy: after probe pierced through barrier film, circuit was connected, and automatically records probe and bears pressure.
Circuit voltage: 1.0V, probe diameter: 0.02mm.
With reference to figure 7, testing procedure is as follows: pressure platform 71 and manograph 90 are positioned on the workbench 70, at first sampling, sample barrier film 10 ' is fixed on the pressure platform 71 with pin 72, be distributed with 9 probes 80 on the pressure device 73, slowly exert pressure, with manograph 90 devices record pressure size, average.
According to test result, as the anodal barrier film of bag, use FV4384 as bag negative pole barrier film with NKK-115.
With reference to figure 1, adopt hot compression to weld together in two kinds of barrier films, solder bar is 1mm width metal bar, wraps anodal barrier film 10 and bag negative pole barrier film 20 all have 20mm on its length direction lap, sealing wire 30 is positioned at the centre of lap position, and it is longer than bag negative pole barrier film 20 to wrap anodal barrier film 10.
With reference to figure 2, positive pole 40 is lain in a horizontal plane on the anodal barrier film 10 of bag, an end is near sealing wire 30.
With reference to figure 3, the lap that wraps anodal barrier film 10 is turned down along sealing wire 30, cover part positive pole 40.
With reference to figure 4, will roll up pin 60 and be placed on the bag negative pole barrier film 20, and push down sealing wire 30.
With reference to figure 5, will wrap negative pole barrier film 20 along 60 turnovers of volume pins, cover anodally 40, and some bag negative pole barrier film 20 exceeds anodal 40 and cover on the anodal barrier film 10 of bag.
With reference to figure 6, the edge of negative pole 50 along volume pin 60 is positioned on the bag negative pole barrier film 20, finish coiling take volume pin 60 as the axle center.
Adopt said method, use FV4384 bag negative pole and NKK-115 bag anodal, and suitable positive pole and negative pole, reel and make 10000 of utmost point groups, the shell of appropriate mix and block etc. are finished battery assembling, and the operation such as activated, ageing is made the 50AA2300mAh battery again.Use FV4384 barrier film and suitable positive pole and negative pole, reel and make 10000 of utmost point groups, the shell of appropriate mix and block etc. are finished the battery assembling, and the operation such as activated, ageing is made the 50AA2300mAh battery again.Use NKK-115 barrier film and suitable positive pole and negative pole, reel and make 10000 of utmost point groups, the shell of appropriate mix and block etc. are finished the battery assembling, and the operation such as activated, ageing is made the 50AA2300mAh battery again.Record respectively that utmost point group enters shell average time and enters the shell qualification rate in the above-mentioned battery manufacturing process, and contrast coiling zero volt.And battery storing low pressure and zero volt situation.
Enter shell qualification rate calculation specifications: after battery entered shell, defective item comprised the negative pole tail break because entering to take out behind the shell mashed core that winding needle causes and causing when entering shell.
Battery storing method explanation: get respectively and use FV4384 barrier film 50AA2300mAh battery, use barrier film 50AA2300mAh battery of the present invention and use each 1000 on NKK-115 barrier film 50AA2300mAh battery, institute's power taking tankage is more or less the same, actual capacity 2300mAh ~ 2350mAh, 30% is charged, after normal temperature is deposited 1 year, test the voltage of all batteries, ask average voltage V, the low pressure position is set as V-20mV, and the battery that cell voltage is lower than V-20mV is A-battery.
The result is as shown in table 2.
Table 2
As can be seen from Table 2, use method of the present invention, with conventional roll around using single barrier film method to compare, the present invention's zero volt ratio of reeling is low, battery storing low pressure and zero volt ratio are relatively little, and utmost point group to enter the shell required time short, it is high to enter the shell qualification rate, easily assembling.
Claims (5)
1. cylindrical nickel-metal hydride battery barrier film using method, it is characterized in that: select that a kind of barrier film surface density is large, the anti-puncture ability strong, reel after decrement little, select that another kind of barrier film surface density is relatively low, the anti-puncture ability is relatively weak, reel after decrement relatively large, with the use that links together of two kinds of barrier films, it is overlapping to leave a part at the barrier film length direction; During coiling, the barrier film bag large with surface density, that the anti-puncture ability is strong, the coiling decrement is little is anodal, the barrier film bag negative pole relatively low with surface density, that the anti-puncture ability is relatively weak, the coiling decrement is relatively large.
2. cylindrical nickel-metal hydride battery barrier film using method according to claim 1, it is characterized in that: the lap length of described two kinds of barrier films is 10-30mm, connects in overlapping centre position.
3. cylindrical nickel-metal hydride battery barrier film using method according to claim 1 and 2 is characterized in that: described two kinds of barrier films are by the metal bar hot compression welding of 0.1-2mm width.
4. cylindrical nickel-metal hydride battery barrier film using method according to claim 1 and 2 is characterized in that: the anodal barrier film of described bag is longer than bag negative pole barrier film.
5. cylindrical nickel-metal hydride battery barrier film using method according to claim 3 is characterized in that: the anodal barrier film of described bag is longer than bag negative pole barrier film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010100016302A CN102130366B (en) | 2010-01-14 | 2010-01-14 | Using method of columnar nickel and nickel-metal hydride battery diaphragm |
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| CN2010100016302A CN102130366B (en) | 2010-01-14 | 2010-01-14 | Using method of columnar nickel and nickel-metal hydride battery diaphragm |
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| CN102130366A CN102130366A (en) | 2011-07-20 |
| CN102130366B true CN102130366B (en) | 2013-05-01 |
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| WO2016056256A1 (en) | 2014-10-10 | 2016-04-14 | 住友化学株式会社 | Manufacturing method for separator wound body for battery, separator wound body for battery, and apparatus for manufacturing separator wound body for battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2798320Y (en) * | 2005-04-18 | 2006-07-19 | 比亚迪股份有限公司 | Electrode core for basic secondary battery and basic secondary battery containing same electrode core |
| CN1805205A (en) * | 2005-01-14 | 2006-07-19 | 比亚迪股份有限公司 | Electrode plate core of lithium ion cell and lithium ion cell with the same |
| CN101150183A (en) * | 2006-09-19 | 2008-03-26 | 深圳市比克电池有限公司 | A coiling lithium secondary battery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805205A (en) * | 2005-01-14 | 2006-07-19 | 比亚迪股份有限公司 | Electrode plate core of lithium ion cell and lithium ion cell with the same |
| CN2798320Y (en) * | 2005-04-18 | 2006-07-19 | 比亚迪股份有限公司 | Electrode core for basic secondary battery and basic secondary battery containing same electrode core |
| CN101150183A (en) * | 2006-09-19 | 2008-03-26 | 深圳市比克电池有限公司 | A coiling lithium secondary battery |
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