CN202127072U - Large-capacity high-power lithium ion battery - Google Patents
Large-capacity high-power lithium ion battery Download PDFInfo
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- CN202127072U CN202127072U CN201120222952XU CN201120222952U CN202127072U CN 202127072 U CN202127072 U CN 202127072U CN 201120222952X U CN201120222952X U CN 201120222952XU CN 201120222952 U CN201120222952 U CN 201120222952U CN 202127072 U CN202127072 U CN 202127072U
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- lithium ion
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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 utility model discloses a large-capacity high-power lithium ion battery, which comprises a battery case. A battery core pole group is arranged in the battery case, the left end of the battery core pole group is provided with a negative current collector copper foil, and the right end of the battery core pole group is provided with a positive current collector aluminum foil. The negative current collector copper foil is connected with a negative wire on the battery case, and the positive current collector aluminum foil is connected with a positive wire on the battery case. The novel large-capacity high-power lithium ion battery adopts a structure that a small-impedance wire is directly connected with current collectors, so the internal resistance of battery is reduced, the large current output performance of battery is realized, the capacity of battery is greatly increased, and the power density of battery can be increased. The whole structure is simple, the collecting performance is good, and the whole performance of the lithium ion battery is beneficially increased. The lithium ion battery has great production practice significance in the field of electric automobiles.
Description
Technical field
The utility model relates to technical field of lithium-ion battery, particularly relates to a kind of large-capacity high-power lithium ion battery.
Background technology
Lithium ion battery because have that specific capacity is big, operating voltage is high, have extended cycle life, charging rate is fast, operating temperature range is wide, volume is little and plurality of advantages such as in light weight; Be widely used in fields such as mobile communication equipment, notebook computer, portable electronic products and electric tool, and also be employed gradually at pure electric automobile and field of hybrid electric vehicles.
Along with the minimizing day by day of traditional fossil energy, and be that the Climatic issues of principal character are more serious to the mankind's threat day with the global warming.Energy-conservation and electric automobile environmental protection becomes the splendid selection of traffic and transport field.And one of most critical parts of electric automobile---electrokinetic cell also needs higher volumetric properties and power-performance, and the excellent safety ability.Want to make lithium ion battery on electric automobile, to be more widely used, specific capacity and the power-performance etc. that must on present basis, further improve cell are to reach the special instructions for use in electric automobile field.
Therefore,, press at present and develop a kind of new type lithium ion battery, require higher capacity of its tool and specific power in the electrokinetic cell field.And the actual power of battery can reduce along with the increase of the internal resistance of battery, wants therefore to realize that the high-power output of battery just needs to reduce the internal resistance of battery, realizes the big electric current output of battery.
The utility model content
The purpose of the utility model is to provide a kind of large-capacity high-power lithium ion electrokinetic cell simple in structure.
The technical scheme that the utility model adopted:
The utility model provides a kind of large-capacity high-power lithium ion battery, includes and is provided with electric core utmost point group in the said battery case of battery case and battery cover;
Said electric core utmost point group is reeled by the positive plate that sets gradually, barrier film and negative plate and is formed, and the left end of said electric core utmost point group is provided with the negative current collector of uncoated active material, and the right-hand member of said electric core utmost point group is provided with the plus plate current-collecting body of uncoated active material;
The right ends of said battery cover is respectively arranged with negative wire and positive wire, and said plus plate current-collecting body is connected with the positive wire of battery cover, and said negative current collector is connected with the negative wire of battery cover.
Said positive plate and negative pole all adopt continuous coating, extend the plus plate current-collecting body aluminium foil along length direction one side of main core body, extend the negative current collector Copper Foil along the length direction opposite side of main core body.
Said plus plate current-collecting body and negative current collector carry out prewelding with before lead-in wire is fixedly connected.
Wherein, after said electric core utmost point group and the fixing welding of battery cover lead-in wire, the positive and negative lead wires outside and bottom coated insulation pad in the left and right sides.
Wherein, said electric core utmost point group top is provided with battery cover, and insulating washer is a double-decker, and battery cover is arranged between the bilayer of insulating washer, and the upside of each said insulating washer is a pole plate, and the opposite side of insulating washer is the brace of lead-in wire.Anodal rivet and negative pole rivet run through a described pole plate, an insulating washer and a lead-in wire brace successively, and it is riveted together.
Wherein, being coated with fluid sealant between said insulating washer and the battery cover, is interference fit between the outer brace on each said insulating washer and said pole plate and the lead-in wire.
Wherein, said anodal rivet is the rivet that aluminium is processed, and the negative pole rivet is the rivet that copper becomes.
Wherein, the negative plate position of said battery cover has liquid injection hole, and said battery cover is welded with safety valve on the centre position.
Wherein, said positive wire is the lead-in wire that aluminium is processed, the lead-in wire of said negative wire for adopting copper to become, the plating nickel on surface of said negative wire.
Technical scheme by above the utility model provides is visible, and compared with prior art, the utility model provides a kind of novel large-capacity high-power lithium ion battery; It adopts little impedance lead-in wire and the direct-connected structure of collector, has reduced the internal resistance of cell, has realized the big electric current output characteristic of battery; Can be so that the capacity of battery significantly improves; Can improve the power density of battery, overall structure is simple, the afflux function admirable; Help improving the overall performance of lithium ion battery, be of great practical significance for lithium ion battery is used in the electric automobile field.
Completely available dynamic battery structure pattern is changed for the utility model, the internal electrical core adopts winding-structure, adopts collector directly to connect the form that, and collector directly welds fixing with the lead-in wire large tracts of land.Lead-in wire, rivet and pole plate all adopt little internal resistance design.This kind design has reduced cell integrated internal resistance on the one hand, has improved the heavy-current discharge performance of battery, has realized the high power output characteristic of battery, and the inner space obviously increases on the other hand, and the Capacity design of battery is obviously promoted.The utility model battery structure is simple, the afflux function admirable.
Description of drawings
Fig. 1 is the external structure effect sketch map of the utility model;
Fig. 2 is the assembly structure generalized section of the utility model;
Fig. 3 is the structural representation of the utility model battery cover;
Fig. 4 is the plan structure sketch map of the utility model battery cover;
Fig. 5 is the structural representation of the utility model sealed insulation packing ring;
Fig. 6 is the structural representation of lead-in wire (comprise two kinds of positive wire and negative wires, positive wire is identical with the negative wire structure) in the utility model battery;
Fig. 7 is the structural representation of insulation spacer in the utility model battery;
Fig. 8 is the structural representation of utmost point group in the utility model battery;
Fig. 9 is the expansion sketch map of utmost point group in the utility model battery;
Figure 10 is an A-A direction cutaway view among Fig. 8;
Among the figure: 1 is battery case, and 2 is battery cover, and 3 is electric core utmost point group, and 4 is pole plate, and 5 is insulating washer; 6 is anodal rivet, and 7 is the negative pole rivet, and 8 is positive wire, and 9 is negative wire, and 10 is safety valve; 11 is liquid injection hole, and 12 is positive plate, and 13 is negative plate, and 14 is barrier film; 15 is the plus plate current-collecting body aluminium foil, and 16 is the negative current collector Copper Foil, and 17 is insulation spacer, and 18 is through hole.
Embodiment
In order to make those skilled in the art person understand the embodiment of the utility model better, the utility model is further specified below in conjunction with accompanying drawing and execution mode.
The utility model provides a kind of novel large-capacity high-power lithium ion battery, and this battery includes the battery case 1 of rectangular shape, and said battery case 1 has been embedded in electric core utmost point group 3;
Referring to Fig. 9, said electric core utmost point group 3 adopts winding-structure, and it is barrier film 14, negative pole 13, barrier film 14, anodal 12 in proper order that utmost point group is launched the back pole piece; The uncoated segment set fluid aluminium foil 15 of said positive plate 12 is in a side of electric core, and the uncoated part copper foil of affluxion body 16 of said negative plate 12 is in the side in addition of electric core; Said barrier film 14 covers negative plate 13 fully and applies the active material parts, and it makes anodal 12 not contact with negative pole 13.
Referring to Fig. 8; After coiling is accomplished; The metal forming collector of positive plate 12 and the reservation of negative plate 13 sidepieces is in the right ends of electric core utmost point group 3; Be specially: the uncoated active material collector aluminium foil 15 that said positive plate 12 right sides have is positioned at the right-hand member of said electric core utmost point group 3, and the uncoated active material copper foil of affluxion body 16 that said negative plate 13 left sides have is positioned at the left end of said electric core utmost point group 3.Said electric core utmost point group 3 is along generalized section such as Figure 10 of left and right directions.
After utmost point group completes, respectively the negative current collector Copper Foil 16 of left end and the plus plate current-collecting body 15 of right-hand member are carried out prewelding, prewelding is accomplished electric core utmost point group 3 and battery cover 2 assemblings.Said plus plate current-collecting body aluminium foil 15 inserts the positive wire 8 of battery cover 2, simultaneously negative current collector Copper Foil 16 is inserted in the negative wire 9 of battery cover 2.
Referring to Fig. 2, said plus plate current-collecting body aluminium foil 15 is fixed welding with the positive wire 8 of battery cover 2, and negative current collector Copper Foil 16 is fixed welding with the negative wire 9 of battery cover 2;
In the concrete operations; Referring to Fig. 6, the top brace of said positive wire 8 and negative wire 9 has through hole 18, and said lead-in wire (comprises 9 two kinds of positive wire 8 and negative wires; Positive wire 8 is identical with negative wire 9 both structures; All being structure as shown in Figure 7) bottom is two two close planes of leader is welding portion to the inside near the leader of bending that the utmost point collector of said electric core utmost point group 3 inserts between the leader.
Referring to Fig. 2, said electric core utmost point group 3 is after 2 welding are accomplished with battery cover, about the outside and bottom side coated insulation pad 17 (see figure 7)s of electric core utmost point group 3 of lead-in wire.
Referring to Fig. 3 and Fig. 4; Said electric core utmost point group 3 tops are provided with battery cover 2, and the right ends of said battery cover 2 is respectively arranged with a through hole, and each through hole is insulating washer 5 in the injection moulding all; Said insulating washer is the double-decker (see figure 5); Battery cover 2 is arranged between the bilayer of insulating washer, and pole plate 4 is positioned at the insulating washer upper surface, and positive wire 8 and negative wire 9 are positioned at the below of insulating washer.Said insulating washer 5 has through hole 18 shapes of brace on shape, size and said positive wire 8 and the negative lead-in wire 9, the through hole of big or small corresponding coupling, shape of through holes, big or small corresponding coupling on the shape of the through hole of said insulating washer 5, big or small and the pole plate 4.
Need to prove, in the utility model, be coated with fluid sealant between said insulating washer 5 and the battery cover 2, thereby can strengthen the sealing of the lithium ion battery that the utility model provides.
Also need to prove the lead-in wire of said positive wire post 8 for adopting aluminium to process, the lead-in wire of said negative wire 9 for adopting copper to become, the plating nickel on surface of said lead-in wire 9.
In addition, referring to Fig. 1, Fig. 3 and Fig. 4, in the utility model, in order to improve the security performance of battery, the position has liquid injection hole 11 near the negative plates of said battery cover 2.In the utility model; Be welded with safety valve 10 on the centre position on the said battery cover 2; Said safety valve is the safety valve (being specially pressure release damage type vent valve) of metal film material, and matcoveredn (prevent the outside destroy of non-inside battery reason and safety valve 10 was lost efficacy) is gone back in the safety valve outside.Therefore, security performance is compared cylindrical battery has had very big improvement.For the utility model, the assembly structure of entire cell is as shown in Figure 2, and the external structure effect of the novel large-capacity high-power lithium ion battery of final molding is as shown in Figure 1.
The above instance only is that the preferred implementation of the utility model is described; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; For various improvement and the retouching of those skilled in the art, all should be regarded as in the definite protection range of the utility model claims the technical scheme of the utility model.
Claims (7)
1. large-capacity high-power lithium ion battery includes battery case (1) and battery cover (2) is characterized in that, said battery case is provided with electric core utmost point group (3) in (1);
Said electric core utmost point group (3) is reeled by the positive plate that sets gradually (12), barrier film (14) and negative plate (13) and is formed; The left end of said electric core utmost point group (3) is provided with the negative current collector (16) of uncoated active material, and the right-hand member of said electric core utmost point group (3) is provided with the plus plate current-collecting body (15) of uncoated active material;
The right ends of said battery cover (2) is respectively arranged with negative wire (9) and positive wire (8), and said plus plate current-collecting body (15) is connected with the positive wire (8) of battery cover, and said negative current collector (16) is connected with the negative wire (9) of battery cover.
2. large-capacity high-power lithium ion battery as claimed in claim 1; It is characterized in that: said positive plate (12) and negative pole (13) all adopt continuously and apply; Length direction one side along main core body is extended plus plate current-collecting body aluminium foil (15), extends negative current collector Copper Foil (16) along the length direction opposite side of main core body.
3. large-capacity high-power lithium ion battery as claimed in claim 2; It is characterized in that; Said insulating washer is a double-decker; Battery cover (2) is arranged between the bilayer of insulating washer, and pole plate (4) is positioned at the insulating washer upper surface, and positive wire (8) and negative wire (9) are positioned at the below of insulating washer.
4. large-capacity high-power lithium ion battery as claimed in claim 3; It is characterized in that positive wire (8), negative wire (9), insulating washer (5), battery cover (2), the pole plate (4) of end are riveted together through anodal rivet (6) and negative pole rivet (7) respectively about said being positioned at.
5. large-capacity high-power lithium ion battery as claimed in claim 3 is characterized in that, said battery cover (2) negative pole position is provided with liquid injection hole (11), and said battery cover (2) is welded with safety valve (10) on the centre position.
6. large-capacity high-power lithium ion battery as claimed in claim 3 is characterized in that, is coated with fluid sealant between said insulating washer and the battery cover, is interference fit between the outer brace on said insulating washer and said pole plate and the lead-in wire.
7. like each described large-capacity high-power lithium ion battery in the claim 1 to 6; It is characterized in that; The lead-in wire of the positive wire of said battery cover (8) for adopting aluminium to process, the utmost point lead-in wire that said negative wire (9) becomes for adopting copper, the plating nickel on surface of said negative wire (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222952XU CN202127072U (en) | 2011-06-28 | 2011-06-28 | Large-capacity high-power lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222952XU CN202127072U (en) | 2011-06-28 | 2011-06-28 | Large-capacity high-power lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202127072U true CN202127072U (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120222952XU Expired - Lifetime CN202127072U (en) | 2011-06-28 | 2011-06-28 | Large-capacity high-power lithium ion battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738506A (en) * | 2012-06-25 | 2012-10-17 | 天津力神电池股份有限公司 | High power lithium ion power battery |
| CN103022572A (en) * | 2013-01-05 | 2013-04-03 | 山东久力电子科技有限公司 | Winding type square power lithium-ion battery |
| CN107331809A (en) * | 2017-06-30 | 2017-11-07 | 马鞍山首拓新能源科技有限公司 | Battery energy storage device and preparation method thereof |
| CN107482153A (en) * | 2017-06-15 | 2017-12-15 | 力神动力电池系统有限公司 | A kind of new paper tinsel lug winding battery pole group and cover board connection structure |
| CN109004236A (en) * | 2018-07-17 | 2018-12-14 | 江苏海基新能源股份有限公司 | A kind of full tab wound lithium-ion battery current collector structure and processing method |
-
2011
- 2011-06-28 CN CN201120222952XU patent/CN202127072U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738506A (en) * | 2012-06-25 | 2012-10-17 | 天津力神电池股份有限公司 | High power lithium ion power battery |
| CN103022572A (en) * | 2013-01-05 | 2013-04-03 | 山东久力电子科技有限公司 | Winding type square power lithium-ion battery |
| CN107482153A (en) * | 2017-06-15 | 2017-12-15 | 力神动力电池系统有限公司 | A kind of new paper tinsel lug winding battery pole group and cover board connection structure |
| CN107482153B (en) * | 2017-06-15 | 2023-10-27 | 力神（青岛）新能源有限公司 | Novel foil tab winding battery pole group and cover plate connection structure |
| CN107331809A (en) * | 2017-06-30 | 2017-11-07 | 马鞍山首拓新能源科技有限公司 | Battery energy storage device and preparation method thereof |
| CN107331809B (en) * | 2017-06-30 | 2020-05-26 | 张红梅 | Battery energy storage device and preparation method thereof |
| CN109004236A (en) * | 2018-07-17 | 2018-12-14 | 江苏海基新能源股份有限公司 | A kind of full tab wound lithium-ion battery current collector structure and processing method |
| CN109004236B (en) * | 2018-07-17 | 2023-05-30 | 江苏海基新能源股份有限公司 | Processing method of full-lug winding lithium ion battery current collector structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120125 |
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| CX01 | Expiry of patent term |