CN101916879B - Cylindrical lithium-manganese dioxide battery structure with high capability and preparation method thereof - Google Patents
Cylindrical lithium-manganese dioxide battery structure with high capability and preparation method thereof Download PDFInfo
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- CN101916879B CN101916879B CN2010102627353A CN201010262735A CN101916879B CN 101916879 B CN101916879 B CN 101916879B CN 2010102627353 A CN2010102627353 A CN 2010102627353A CN 201010262735 A CN201010262735 A CN 201010262735A CN 101916879 B CN101916879 B CN 101916879B
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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
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Abstract
The invention relates to a cylindrical lithium-manganese dioxide battery structure with high capability, wherein a ring of diaphragm (4) is wrapped on an outer surface of an anode electrical core (3), a lithium band (5) is arranged between the diaphragm (4) and a steel shell (1), a cover assembly (9) is located on the inner upper end of the steel shell (1), an anode core post (7) is located in the middle of the cover assembly (9), a metal connecting strip (10) is connected with the anode core post (7), the cover assembly (9) is provided with a liquid injection hole (11) and a sealing pin (8) for sealing the liquid injection hole (11), and an insulation sheet (6) for isolating an anode piece (3) from the lithium band (5) is arranged at the inner bottom of the steel shell (1). By adopting the cylindrical lithium-manganese dioxide battery structure, the capability of the battery is increased by 25.0%-36.4%, and the cost of materials is reduced. The invention further discloses a method for assembling the cylindrical lithium-manganese dioxide battery structure with high capability.
Description
Technical field
The present invention relates to a kind of cylindrical lithium-manganese dioxide battery structure with high capability, the invention still further relates to the preparation method of this cylindrical lithium-manganese dioxide battery structure with high capability.
Background technology
The mode that the critical piece of existing cylindrical lithium manganese cell electricity core adopts one deck positive plate, two-layer barrier film and one deck negative plate to be superimposed to reel more is rolled into positive plate, barrier film and negative plate in the electric core (as shown in Figure 2) of an integral body; And then with in this box hat of packing into; Connect anodal stem stem through anode ear; Negative electrode lug connects the both positive and negative polarity (as shown in Figure 3) that box hat forms battery, and this core strueture that is rolled into integral body requires very high, pretty troublesome when reeling.And do the area that has strengthened the positive and negative plate contact like this; Improved the probability of internal short-circuit, the short circuit current of pacifying up to several peaces even tens has also brought the hidden danger on the safety, and the gap of reeling in addition between each layer has tied up effective electric core space; It is on the low side that feasible positive pole accounts for battery gross weight ratio; Battery capacity can't maximize, and bigger positive and negative electrode contact area makes the large usage quantity of barrier film has increased the battery material cost; The operation of relative complex has also influenced production efficiency and product qualified rate, is unfavorable for large-scale production (as shown in table 1).
Table 1: press the cylindrical lithium manganese cell related data that common process (existing technology) is produced
Therefore, invention a kind of can be 1., reduce the contact area of positive and negative electrode; 2., reduce the barrier film consumption; 3., improve the active material proportion; 4., simplify the operation, the high power capacity cylindrical lithium manganese cell that improves the production qualification rate becomes an important urgent job.
Summary of the invention
First purpose of the present invention is to overcome above-mentioned existing disadvantages of background technology part, and a kind of cylindrical lithium-manganese dioxide battery structure with high capability is provided.
Another object of the present invention is to provide a kind of method for preparing cylindrical lithium-manganese dioxide battery structure with high capability.
First purpose of the present invention reaches through following measure: cylindrical lithium-manganese dioxide battery structure with high capability, it is characterized in that it comprises the box hat that is positioned at the outside, and the centre position in box hat is the metal intercell connector; The positive electrical core is by the column construction of positive plate around metal intercell connector coiled, is enclosed with a circle barrier film at the positive electrical core outer surface, is the lithium band between barrier film and box hat; The lid group is positioned at the upper end of box hat; Anodal stem stem is positioned at the centre position of covering group, and the metal intercell connector is connected with anodal stem stem, on the lid group liquid injection hole is arranged; Be useful on the sealing nail of sealing liquid injection hole, the bottom in box hat is useful on the insulating trip with positive plate and the isolation of lithium band.
In technique scheme, at said metal intercell connector and anodal stem stem anode ear is arranged, an end of anode ear is welded on the metal intercell connector, and the other end of anode ear is welded on the anodal stem stem.
In technique scheme, said insulating trip 6 is circular.
In technique scheme, between said anodal stem stem 7 and the lid group 9 glass insulator 14 is arranged.
The method of assembling cylindrical lithium-manganese dioxide battery structure with high capability, it in turn includes the following steps:
The 1st step, box hat are prepared:
1. with box hat 1 and round insulation sheet 6 desiccant dehumidifications,
2. round insulation sheet 6 is put into box hat 1 bottom;
The 2nd step, negative pole are handled:
1. lithium band 5 is cut into the segment rectangle of Len req,
2. lithium band 5 is twisted into hollow cylinder,
3. the cylinder that lithium band 1 is rolled into is put into the box hat 1 that installs round insulation sheet 6, and itself and box hat 1 inwall are compressed;
The 3rd step, the anodal coiling:
With connecting the positive plate 3 that covers group 9 through serving as that axle is wound into cylindrical electric core with the metal intercell connector on the positive plate 9, and at outer surface parcel one circle barrier film 4;
The 4th step, positive electrical core are gone into box hat:
The cylindrical electric core that is rolled into was put into for the 2nd step press the box hat of lithium band, make the contact of positive and negative electrode appropriateness but insulation is good, pressing lid group 9 and box hat 1;
The 5th step, solder up:
Use argon arc welding meet sb. at the airport with anchor clamps with pressing well the battery of lid group accomplish solder up, make and cover group and box hat is welded into as a whole;
The 6th step, fluid injection:
Adopt quantitative fluid injection machine battery to be carried out fluid injection through the liquid injection hole on the lid group;
The 7th step, means of press seals nail:
With sealing nail 8 on the liquid injection hole of having annotated on the battery cover group 9 of liquid 11 to good position, battery be placed on locate under the Pneumatic pressing machine, will seal to follow closely and be pressed into liquid injection hole, completion becomes the finished product battery after to the sealing formation semi-finished product battery of battery, decals.
Cylindrical lithium-manganese dioxide battery structure with high capability of the present invention has following advantage:
1., positive plate is rolled into solid cylinder alone; Negative pole is made hollow cylinder separately and is pressed together on the internal surface of battery shell; The positive and negative electrode real contact area has only anodal cylindrical outer surface long-pending when anodal and negative pole fit together; Reduce the positive and negative electrode contact area greatly, reduced the probability of internal short-circuit.
2., because the reducing of positive and negative electrode contact area, the area that need isolate has so also just reduced, the consumption of barrier film will significantly reduce.
3., negative pole and barrier film do not adopt multilaminate coiled mode, reduced bedding void, in the battery case space utilization more abundant, high activity material proportion.
4., the electric core production phase only need be wound into positive pole cylindrically, saves the operation that negative pole connects lug and coiling, reduces the complexity that battery assembles greatly.
Table 2 is the related data of a few money batteries of employing technology making of the present invention:
For verifying good effect of the present invention, carried out following concrete compare test:
1, production efficiency test:
The production efficiency of two kinds of manufacture crafts has been carried out contrasting (assembling stage); Make the battery of 123A model according to common process; An actuator produced 88 batteries in average one hour, and adopted manufacture craft of the present invention, can make 169 batteries in average one hour.
2, production qualification rate compares:
5 batches of production qualification rates statistics that extract the CR123A battery of pressing two kinds of explained hereafter respectively from average qualification rate, the invention enables the product qualified rate of battery to promote about 8.2 percentages like table 3.
Table 3: 5 batches of production qualification rate statistical forms of the CR123A battery of two kinds of explained hereafter
3, discharge performance test:
Get respectively two kinds of explained hereafter CR123A type battery each one at ambient temperature with 1mA electric current constant-current discharge to 2.0V; The discharge capacity of the cell of making by common process is about 1.5Ah; And the capacity of emitting with the battery that technology of the present invention is made is approximately 2.0Ah; See that discharge curve sees Fig. 1 (a is the discharge curve of technology manufacture batteries of the present invention, and b is for pressing the discharge curve of common process manufacture batteries).
When the discharge curve of Fig. 1 can find out that the battery of making by technology of the present invention discharges with normalized current relatively, prolong about 33.3% (capacity promotes about 33.3%) discharge time, platform voltage is also more steady.
4, battery short circuit security test:
Contrast table 1 finds that with the short circuit current in the table 2 the present invention can reduce the short circuit current of battery greatly, and both difference in fail safe are seen table 4 test report in the actual short process.
Table 4 is the short circuit safety comparison sheet of the CR123A battery of two kinds of explained hereafter
Contrast table 1, table 2, the data of associative list 3 and above 3 tests draw following result:
1, adopt technology of the present invention to make battery positive and negative electrode contact area decline 73.7%-79.3%;
2, adopt technology of the present invention to make the battery diaphragm consumption reduce 88.4%-90.9%;
3, the ratio that adopts technology of the present invention to make battery positive electrode active material account for the battery gross weight promotes 4.3%-7.0%;
4, adopt technology of the present invention to make the battery short circuit electric current reduce 95.0%-96.0%, battery security improves greatly;
5, adopt technology of the present invention to make battery capacity promote 25.0%-36.4%;
6, adopt technology of the present invention to make the battery production qualification rate promote about 8.2%;
7, adopt technology of the present invention to make battery production improved efficiency about 92.0%;
It is following to sum up effect of the present invention from above result:
1, improved battery capacity (25.0%-36.4%);
2, improved battery security, greatly reduced battery because the possibility that short circuit sets off an explosion;
3, reduced material cost, the minimizing of 88.4%-90.9% barrier film consumption makes practices thrift 5%-6% on every battery material cost;
4, promoted production efficiency (about 92.0%);
5, improved battery production qualification rate (8.2%).
Description of drawings
Fig. 1 is the discharge curve comparison diagram of the battery of technology of the present invention and common process production.
Fig. 2 is the core strueture sketch map of existing cylindrical lithium manganese cell.
Fig. 3 is the cross-sectional view of existing cylindrical lithium manganese cell.
Fig. 4 is the structural representation of box hat among the present invention and round insulation sheet.
Fig. 5 is the structural representation of lithium band among the present invention.
Fig. 6 is the structural representation of box hat, round insulation sheet and lithium band among the present invention.
Fig. 7 is the structure expanded view of positive plate among the present invention.
Fig. 8 is the structural representation of positive electrical core among the present invention.
Fig. 9 is the assembling sketch map of battery of the present invention.
Figure 10 is assembled into half-finished outline drawing for battery of the present invention.
The cross-sectional view of Figure 11 high power capacity cylindrical lithium of the present invention manganese cell.
1. box hats among the figure, 2. positive plate, 3. anode ear, 4. barrier film, 5. lithium band, 6. insulating trip, 7. anodal stem stem, 8. sealing nail, 9. lid group, 10. metal intercell connector, 11. liquid injection holes, 12. negative electrode lugs, 13. positive electrical cores, 14. glass insulators.
Embodiment
Specify performance of the present invention below in conjunction with accompanying drawing, but they do not constitute to qualification of the present invention, only do for example.Simultaneously through explaining that advantage of the present invention will become clear more and easy and understand.
Consulting accompanying drawing can know: cylindrical lithium-manganese dioxide battery structure with high capability of the present invention; It comprises the box hat 1 that is positioned at the outside, and the centre position in box hat 1 is a metal intercell connector 10, and positive electrical core 13 is by the column construction (like Fig. 7, shown in Figure 8) of positive plate 2 around metal intercell connector 10 coileds; Be enclosed with a circle barrier film 4 at positive electrical core 13 outer surfaces; Between barrier film 4 and box hat 1, be lithium band 5, lid group 9 is positioned at the upper end of box hat 1, and anodal stem stem 7 is positioned at the centre position of covering group 9; Metal intercell connector 10 is connected with anodal stem stem 7; Liquid injection hole 11 is arranged on the lid group 9, be useful on the sealing nail 8 of sealing liquid injection hole 11, the bottom in box hat 1 is useful on the insulating trip 6 (like Fig. 9, Figure 10, shown in Figure 11) that positive plate 3 and lithium band 5 are isolated.
At metal intercell connector 10 and anodal stem stem 7 anode ear 3 is arranged, an end of anode ear 3 is welded on the metal intercell connector 10, and the other end of anode ear 3 is welded on the anodal stem stem 7.Insulating trip 6 is circular (as shown in Figure 6).
Prepare the method for cylindrical lithium-manganese dioxide battery structure with high capability, it comprises the steps:
The 1st step, box hat are prepared:
1. with box hat 1 and round insulation sheet 6 desiccant dehumidifications,
2. round insulation sheet 6 is put into box hat 1 bottom (as shown in Figure 4);
The 2nd step, negative pole are handled:
1. lithium band 5 is cut into the segment rectangle of Len req,
2. lithium band 5 is twisted into hollow cylinder (as shown in Figure 5),
3. the cylinder that lithium band 1 is rolled into is put into the box hat 1 that installs round insulation sheet 6, and itself and box hat 1 inwall are compressed (as shown in Figure 6);
The 3rd step, the anodal coiling:
With connecting the positive plate 2 that covers group 9 through serving as that axle is wound into cylindrical electric core with the metal intercell connector on the positive plate 9, and at outer surface parcel one circle barrier film 4 (as shown in Figure 7);
The 4th step, positive electrical core are gone into box hat:
The cylindrical electric core that is rolled into was put into for the 2nd step press the box hat of lithium band, make the contact of positive and negative electrode appropriateness but insulation is good, pressing lid group 9 and box hat 1 (as shown in Figure 8);
The 5th step, solder up:
Use argon arc welding meet sb. at the airport with anchor clamps with pressing well the battery of lid group accomplish solder up, make and cover group and box hat is welded into as a whole (as shown in Figure 8);
The 6th step, fluid injection:
Adopt quantitative fluid injection machine battery to be carried out fluid injection (as shown in Figure 9) through the liquid injection hole on the lid group;
The 7th step, means of press seals nail:
With sealing nail 8 on the liquid injection hole of having annotated on the battery cover group 9 of liquid 11 to getting well; Battery is placed under the Pneumatic pressing machine locates; To seal nail and be pressed into liquid injection hole, accomplishing becomes finished product battery (shown in figure 10) after sealing to battery forms semi-finished product battery, decals.
Other is prior art without the part that specifies.
Claims (5)
1. cylindrical lithium-manganese dioxide battery structure with high capability; It is characterized in that it comprises the box hat (1) that is positioned at the outside, the centre position in box hat (1) is metal intercell connector (10), and positive electrical core (13) is by the column construction of positive plate (3) around metal intercell connector (10) coiled; Be enclosed with a circle barrier film (4) at positive electrical core (13) outer surface; Between barrier film (4) and box hat (1), be lithium band (5), lid group (9) is positioned at the upper end of box hat (1), and anodal stem stem (7) is positioned at the centre position of covering group (9); Metal intercell connector (10) is connected with anodal stem stem (7); Liquid injection hole (11) is arranged on the lid group (9), be useful on the sealing nail (8) of sealing liquid injection hole (11), the bottom in box hat (1) is useful on the insulating trip (6) with positive plate (3) and lithium band (5) isolation.
2. cylindrical lithium-manganese dioxide battery structure with high capability according to claim 1; It is characterized in that anode ear (3) being arranged at metal intercell connector (10) and anodal stem stem (7); One end of anode ear (3) is welded on the metal intercell connector (10), and the other end of anode ear (3) is welded on the anodal stem stem (7).
3. cylindrical lithium-manganese dioxide battery structure with high capability according to claim 1 is characterized in that insulating trip (6) is for circular.
4. cylindrical lithium-manganese dioxide battery structure with high capability according to claim 1 has glass insulator (14) between anodal stem stem (7) and the lid group (9).
5. the method for assembling cylindrical lithium-manganese dioxide battery structure with high capability is characterized in that it comprises the steps:
The 1st step, box hat are prepared:
1. with box hat (1) and round insulation sheet (6) desiccant dehumidification,
2. round insulation sheet (6) is put into box hat (1) bottom;
The 2nd step, negative pole are handled:
1. lithium band (5) is cut into the segment rectangle of Len req,
2. lithium band (5) is twisted into hollow cylinder,
3. the cylinder that the lithium band is rolled into is put into the box hat (1) that installs round insulation sheet (6), and itself and box hat (1) inwall are compressed;
The 3rd step, the anodal coiling:
To connect the positive plate (3) that covers group (9) through serving as that axle is wound into cylindrical positive electrical core (13) with the metal intercell connector (9) on the positive plate, and at outer surface parcel one circle barrier film (4);
The 4th step, positive electrical core are gone into box hat:
The cylindrical positive electrical core (13) that is rolled into was put into for the 2nd step press the box hat (1) of lithium band, make the contact of positive and negative electrode appropriateness but insulation is good, pressing lid group (9) and box hat (1);
The 5th step, solder up:
Use argon arc welding meet sb. at the airport with anchor clamps with pressing well the battery of lid group accomplish solder up, make and cover group and box hat (1) is welded into as a whole;
The 6th step, fluid injection:
Adopt quantitative fluid injection machine battery to be carried out fluid injection through the liquid injection hole on the lid group (11);
The 7th step, means of press seals nail:
To seal nail (8) and go up good position at the liquid injection hole of having annotated on the battery cover group (9) of liquid (11), and battery is placed on will locate under the Pneumatic pressing machine, will seal nail (8) and be pressed into liquid injection hole, completion becomes the finished product battery after to the sealing formation semi-finished product battery of battery, decals.
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| CN102856591B (en) * | 2012-10-08 | 2016-01-20 | 中国电子科技集团公司第十八研究所 | The preparation method of high-capacity lithium-manganese battery |
| CN106374077A (en) * | 2015-07-24 | 2017-02-01 | 东莞力朗电池科技有限公司 | Making technology of cylindrical lithium ion battery |
| CN105932336B (en) * | 2016-05-13 | 2019-02-05 | 深圳南方精益科技有限公司 | A kind of efficient battery core for automobile lithium battery enters casing equipment |
| EP3297077A1 (en) * | 2016-09-20 | 2018-03-21 | Nokia Technologies Oy | An apparatus and associated methods for electrical storage |
| CN106374135A (en) * | 2016-11-24 | 2017-02-01 | 中国科学院宁波材料技术与工程研究所 | Battery core sealing method and tooling device for sealing battery core |
| CN106816650A (en) * | 2017-04-01 | 2017-06-09 | 帅福得（珠海保税区）电池有限公司 | A kind of sustainable discharge battery of high current and its assembly technology |
| CN107180976B (en) * | 2017-04-24 | 2023-10-03 | 武汉孚安特科技有限公司 | High-capacity carbon-ring type cylindrical lithium-manganese battery and manufacturing method thereof |
| CN107658496A (en) * | 2017-09-29 | 2018-02-02 | 北京卫蓝新能源科技有限公司 | A kind of secondary cell and preparation method thereof |
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| CN201112481Y (en) * | 2007-09-30 | 2008-09-10 | 武汉昊诚能源科技有限公司 | Soft package lithium magnesium disposable rectangular cell structure |
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| US20070111099A1 (en) * | 2005-11-15 | 2007-05-17 | Nanjundaswamy Kirakodu S | Primary lithium ion electrochemical cells |
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| CN201112481Y (en) * | 2007-09-30 | 2008-09-10 | 武汉昊诚能源科技有限公司 | Soft package lithium magnesium disposable rectangular cell structure |
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Effective date of registration: 20200619 Address after: 430040, No. 1, Taichung Avenue, Gaoqiao Industrial Park, Wu Shan Economic Development Zone, Hubei, Wuhan Co-patentee after: Beijing Nandu Haocheng power equipment LLC Patentee after: WUHAN HAOCHENG ENERGY RESOURCES TECHNOLOGY Co.,Ltd. Address before: 430040 Hubei province Dongxihu District of Wuhan City Lake Science and technology industry (No. 18 SMEs in the city) Patentee before: WUHAN HAOCHENG ENERGY RESOURCES TECHNOLOGY Co.,Ltd. |
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Address after: 430040 No.1, Taichung Avenue, Gaoqiao Industrial Park, Wujiashan Economic Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Haocheng lithium Technology Co.,Ltd. Patentee after: Beijing Nandu Haocheng power equipment LLC Address before: 430040 No.1, Taichung Avenue, Gaoqiao Industrial Park, Wujiashan Economic Development Zone, Wuhan City, Hubei Province Patentee before: WUHAN HAOCHENG ENERGY RESOURCES TECHNOLOGY Co.,Ltd. Patentee before: Beijing Nandu Haocheng power equipment LLC |
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