CN102683755A - Novel high-voltage lithium-ion power battery - Google Patents
Novel high-voltage lithium-ion power battery Download PDFInfo
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- CN102683755A CN102683755A CN2012102033710A CN201210203371A CN102683755A CN 102683755 A CN102683755 A CN 102683755A CN 2012102033710 A CN2012102033710 A CN 2012102033710A CN 201210203371 A CN201210203371 A CN 201210203371A CN 102683755 A CN102683755 A CN 102683755A
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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 relates to the technical field of a lithium-ion battery and discloses a novel high-voltage lithium-ion power battery. The novel high-voltage lithium-ion power battery comprises a battery shell, wherein a combined battery core pole set which is composed of at least two monomer battery core pole sets in serial connection is arranged in the battery shell; an anode collector of the combined battery core pole set is connected with an anode pillar through an anode lead on a battery cover; and a cathode collector of the combined battery core pole set is connected with a cathode pillar through a cathode lead on the battery cover. According to a structure adopted by the invention, a plurality of monomer battery core pole sets are directly connected in series so as to form the combined battery core pole set and the anode and cathode leads are respectively and directly connected with the anode and cathode collectors of the combined battery core pole set, so that the internal resistance of battery is reduced, the large-current output feature of the battery is realized, the capacity of the battery is greatly increased, the power density of the battery is increased, the whole structure is simple, the current collecting property is excellent and the whole performance of the lithium-ion battery is promoted.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly a kind of novel high-voltage lithium ion electrokinetic cell.
Background technology
Lithium ion battery since have voltage height, specific energy high, recycle often, advantage such as memory time is long; Not only on portable electric appts, be used widely like mobile phone, DV and laptop computer; And be widely used in big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool; Therefore, increasingly high to the performance requirement of lithium ion battery.
With electric automobile and electrical network accumulation of energy is the lithium-ion-power cell of great application background, is satisfying under the primary conditions such as safety, environmental protection, cost, life-span, and its Key Performance Indicator is high voltage and repid discharge ability.
The operating voltage range of existing lithium ion battery only is 2.0-4.25V, if the LiFePO4 system then operating voltage range is lower, only between 2.0-3.65V.Therefore, satisfy high-voltage loadedly, must be in series, can increase the connection internal resistance like this, and increase security risk and cost of manufacture by a plurality of cells outside, thus big limitations the extensive use of lithium ion battery on electric automobile and energy storage field.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art and a kind of high-tension lithium-ion-power cell of big capacity simple in structure is provided.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of novel high-voltage lithium ion electrokinetic cell comprises battery case, in described battery case, is provided with the combined electrical core utmost point group that is in series by at least two monomer electricity core utmost point groups; The plus plate current-collecting body of said combined electrical core utmost point group is connected with Positive Poles through the positive wire on the battery cover, and the negative current collector of said combined electrical core utmost point group is connected with the negative pole pole through the negative wire on the battery cover.
Said combined electrical core utmost point group is that overlapping and employing ultrasonic bond welds together and forms with the plus plate current-collecting body of next monomer electricity core utmost point group by the negative current collector of a monomer electricity core utmost point group by said monomer electricity core utmost point group.
Said monomer electricity core utmost point group structure is identical, and all adopts winding-structure.
Said monomer electricity core utmost point group all adopts negative plate clad anode chip architecture, and described positive plate and negative plate are respectively the dual coated electrode material and have the aluminium foil and the Copper Foil of uncoated clear area.
The plus plate current-collecting body of said combined electrical core utmost point group be not with the plus plate current-collecting body of the monomer electricity core utmost point group of the negative current collector welding of other monomer electricity core utmost point group, the negative current collector of said combined electrical core utmost point group be not with the negative current collector of the electric core utmost point of the monomer group of the plus plate current-collecting body welding of other monomer electricity core utmost point group.
Said positive wire and Positive Poles are aluminium material, and said negative wire and negative pole pole are copper material, said negative wire plating nickel on surface.
Said positive wire, the negative wire outside and bottom are coated with insulation spacer.
Said battery cover is provided with the voltage monitoring terminal, and said voltage monitoring terminal is connected the connecting portion of said monomer electricity core utmost point group through the voltage monitoring lead-in wire.
Said voltage monitoring lead-in wire is the copper lead-in wire.
On said battery cover, be provided with safety valve and liquid injection hole.
The present invention forms combined electrical core utmost point group through adopting a plurality of monomers electricity core utmost point groups directly to be connected in series, and the positive and negative lead wires that is connected respectively with positive and negative terminals and the direct-connected structure of both positive and negative polarity collector of combined electrical core utmost point group, thereby has reduced the internal resistance of cell; Realized the big electric current output characteristic of battery; Battery capacity is significantly improved, improve power of battery density, overall structure is simple; The afflux function admirable helps improving the overall performance of lithium ion battery.
Description of drawings
The perspective view of the battery that Fig. 1 provides for the embodiment of the invention;
The structural representation of the battery case that Fig. 2 provides for the embodiment of the invention;
The structural representation of the battery cover that Fig. 3 provides for the embodiment of the invention;
The plan structure sketch map of the battery cover that Fig. 4 provides for the embodiment of the invention;
The assembly structure generalized section of the battery that Fig. 5 provides for the embodiment of the invention;
The structural representation of the electric core utmost point group of the series connection that Fig. 6 provides for the embodiment of the invention;
The structural representation of the monomer electricity core utmost point group that Fig. 7 provides for the embodiment of the invention;
The expansion sketch map of the monomer electricity core utmost point group that Fig. 8 provides for the embodiment of the invention;
Fig. 9 is the cutaway view of Fig. 7 along the A-A direction;
The structural representation of the pad that Figure 10 provides for the embodiment of the invention;
The structural representation of the safety valve that Figure 11 provides for the embodiment of the invention;
Among the figure: 1 is battery case, and 2 is battery cover, and 3 is combined electrical core utmost point group, and 4 is that first monomer electricity core utmost point group, 5 is second monomer electricity core utmost point group; 6 is Positive Poles, and 7 is that first safety valve, 8 is second safety valve, and 9 is the negative pole pole, and 10 is positive wire; 11 is negative wire, and 12 is the battery voltage monitoring terminal, and 13 is liquid injection hole, and 14 are the voltage monitoring lead-in wire; 15 is the plus plate current-collecting body aluminium foil, and 16 is the negative current collector Copper Foil, and 17 is barrier film, and 18 is positive plate; 19 is negative plate, and 20 is insulation spacer, and 21 are the pressure release film, and 22 is diaphragm.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing.
Referring to Fig. 1 ~ 5, a kind of novel high-voltage lithium ion electrokinetic cell includes the battery case 1 of rectangular shape, battery cover 2, the Positive Poles 6 on said battery cover 2, negative pole pole 9, liquid injection hole 13; Said battery case 1 has been embedded in by first monomer electricity core utmost point group 4,5 series connection of second monomer electricity core utmost point group and has formed combined electrical core utmost point group 3; The plus plate current-collecting body of said combined electrical core utmost point group 3 is connected with said Positive Poles 6 through positive wire 10, and negative current collector 16 is connected with said negative pole pole 9 through negative wire 11.
Referring to shown in Figure 6, the plus plate current-collecting body of the negative current collector of described first monomer electricity core utmost point group 4 and said second monomer electricity core utmost point group 5 is overlapping and adopt ultrasonic bond to weld together.
Said first monomer electricity core utmost point group 4 is the identical utmost point group of structure with the said second electric core utmost point group 5, all adopts winding-structure, and is negative plate clad anode chip architecture, shown in Fig. 7 ~ 9, the figure shows the structure of monomer electricity core utmost point group.It is barrier film 17, negative plate 19, barrier film 17, positive plate 18 that this monomer electricity core utmost point group is launched the back order; Said positive plate 18 and negative plate 19 for two-sided continuous electrode coated material, be parallel to electrode material leave some space uncoated aluminium foil and Copper Foil.Negative plate 19 electrode coated material parts cover positive plate 18 electrode coated material parts fully.
During making; Earlier two-layer barrier film 17 is wrapped on the volume pin; Reel all backs at the said negative plate 19 of two-layer barrier film 17 middle insertions; The Zhou Houzai that reels inserts positive plate 18 in barrier film 17 other sides, and barrier film 17 covers negative plate 19 fully and applies the active material part, and positive plate 18, negative plate 19 are not contacted.
Reel after the completion, blank aluminium foil of reserving on the positive plate 18 of monomer electricity core utmost point group and the negative plate 19 and Copper Foil collector are positioned at the right ends of monomer electricity core utmost point group.
Referring to shown in Figure 7; The collector aluminium foil 15-1 of the uncoated electrode material that said positive plate 18 right sides have; Be positioned at the right-hand member of said monomer electricity core utmost point group 4, the uncoated electrode material copper foil of affluxion body 16-1 that said negative plate 19 left sides have is positioned at the left end of said monomer electricity core utmost point group 4.
Two monomer electricity core utmost point groups with the negative current collector Copper Foil 16-1 of first monomer electricity core utmost point group 4 and overlapping alignment of plus plate current-collecting body Copper Foil of second monomer electricity core utmost point group 5, are carried out ultra-sonic welded after completing, obtain combined electrical core utmost point group 3, like Fig. 6.
Wherein, the blank collector aluminium foil 15-1 of the positive plate 18 uncoated active electrode materials of first monomer electricity core utmost point group 4 is located at a side of combined electrical core utmost point group 3, as the plus plate current-collecting body aluminium foil 15 of combined electrical core utmost point group 3; The blank copper foil of affluxion body of the uncoated active material part of negative plate of second monomer electricity core utmost point group 5 is located at the opposite side of combined electrical core utmost point group 3, as the negative current collector Copper Foil 16 of combined electrical core utmost point group 3.
After combined electrical core utmost point group 3 completes, respectively the negative current collector Copper Foil 16 of combined electrical core utmost point group 3 left ends and the plus plate current-collecting body aluminium foil 15 of right-hand member are carried out prewelding, prewelding is accomplished, with combined electrical core utmost point group 3 and battery cover 2 assemblings.
Fixing welding in the positive wire 10 of said plus plate current-collecting body aluminium foil 15 insertion battery covers 2, the fixing welding in the negative wire 11 with negative current collector Copper Foil 16 insertion battery covers 2 simultaneously; The centre of combined electrical core utmost point group 3, promptly monomer electricity core utmost point group 4 is located at the voltage monitoring lead-in wire 14 on the battery cover 2 with the position alignment that is connected of monomer electricity core utmost point group 5, and is fixed and welded together.
Referring to Figure 10, after said combined electrical core utmost point group 3 and battery cover 2 positive wires 10, the negative wire 11 fixing welding, the positive and negative lead wires outside and bottom coated insulation pad 20 in the left and right sides.
Described insulation spacer 20 is folded into box-like, and its base material is PP, in its bottom three through holes is arranged, so that electrolyte circulation.
In the embodiment of the invention, described Positive Poles 6 is screwed double-screw bolt with negative pole pole 9, and wherein, Positive Poles 6 is an aluminium material, and negative pole pole 9 is a copper material.
The lead-in wire of positive wire described in the battery cover 2 10 for adopting aluminium to process, the lead-in wire of negative wire 11 for adopting copper to become, the plating nickel on surface of said negative wire 11.
Be provided with battery voltage monitoring terminal 12 in the centre position of said battery cover 2, connect voltage monitoring lead-in wire 14, be used to monitor the unit for electrical property parameters such as voltage, internal resistance of the internal resistance of cell, monomer electricity core utmost point group.
Said voltage monitoring lead-in wire 14 becomes for copper.
In embodiments of the present invention; Also be provided with two first safety valve 7 and second safety valves 8 that structure is identical on the described battery cover 2; First safety valve 7 is located between said Positive Poles 6 and the said voltage monitoring terminal 12, and second safety valve 8 is between negative pole pole 9 and said voltage monitoring terminal 12.
Referring to shown in Figure 11, this illustrates the structure of first safety valve 7 that the embodiment of the invention provides, and described safety valve comprises pressure release film 21 and is located at the outer diaphragm 22 of described pressure release film 21.
Said first safety valve 7, second safety valve 8 are the metal film material and process; Be specially pressure release damage type vent valve; Pressure release film 21 outsides at safety valve are provided with diaphragm 22, can prevent the outside destroy of non-inside battery reason and first safety valve 7, second safety valve 8 were lost efficacy.
The assembly structure of the battery described in the embodiment of the invention is as shown in Figure 5, and the structure of the novel large-capacity high-power lithium ion battery of final molding is as shown in Figure 1.
The above only is that monomer electricity core utmost point group is in series on two, and specifically when implementing, described monomer electricity core utmost point group can also 3,4, in addition more, concrete quantity is not limit.
As long as with the plus plate current-collecting body of a plurality of monomer electricity core utmost point groups by corresponding another monomer electricity core utmost point group of negative current collector of monomer electricity core utmost point group; Overlapping successively welding; And will be positioned at the plus plate current-collecting body plus plate current-collecting body of the negative current collector welding of other monomer electricity core utmost point group (not with) and the negative current collector negative current collector of the plus plate current-collecting body welding of other monomer electricity core utmost point group (not with) of the monomer electricity core utmost point group at two ends plus plate current-collecting body and negative current collector as battery; Through the positive level lead-in wire on the battery cover and negative wire respectively with battery cover on Positive Poles, negative pole pole be connected, and on battery cover, establish liquid injection hole and corresponding safety valve, voltage monitoring terminal.
It is fixed that described voltage monitoring terminal comes according to the quantity of the monomer electricity core utmost point group of series connection; Promptly the weld in per two monomers electricity core utmost point group connects a voltage monitoring terminal through the voltage monitoring lead-in wire respectively; The quantity of described safety valve does simultaneously, the corresponding safety valve setting of a monomer electricity core utmost point group.
The present invention adopts winding-structure through inner monomer electricity core; Combined electrical core utmost point group adopts monomer electricity core utmost point group series connection form; Adopt the both positive and negative polarity collector directly through the syndeton of positive and negative lead wires and both positive and negative polarity pole, directly welding is fixing to make both positive and negative polarity collector and positive and negative lead wires large tracts of land, thereby has improved the voltage of battery on the one hand; Improved the energy of battery; Reduce cell integrated internal resistance on the other hand, improved the heavy-current discharge performance of battery, realized the high power output characteristic of battery; Therefore, battery structure of the present invention is simple, and output voltage is high, the afflux function admirable.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. a novel high-voltage lithium ion electrokinetic cell is characterized in that, comprises battery case, in described battery case, is provided with the combined electrical core utmost point group that is in series by at least two monomer electricity core utmost point groups; The plus plate current-collecting body of said combined electrical core utmost point group is connected with Positive Poles through the positive wire on the battery cover, and the negative current collector of said combined electrical core utmost point group is connected with the negative pole pole through the negative wire on the battery cover.
2. novel high-voltage lithium ion electrokinetic cell according to claim 1; It is characterized in that said combined electrical core utmost point group is that overlapping and employing ultrasonic bond welds together and forms with the plus plate current-collecting body of next monomer electricity core utmost point group by the negative current collector of a monomer electricity core utmost point group by said monomer electricity core utmost point group.
3. novel high-voltage lithium ion electrokinetic cell according to claim 1 and 2 is characterized in that, said monomer electricity core utmost point group structure is identical, and all adopts winding-structure.
4. novel high-voltage lithium ion electrokinetic cell according to claim 3; It is characterized in that; Said monomer electricity core utmost point group all adopts negative plate clad anode chip architecture, and described positive plate and negative plate are respectively the dual coated electrode material and have the aluminium foil and the Copper Foil of uncoated clear area.
5. novel high-voltage lithium ion electrokinetic cell according to claim 4; It is characterized in that; The plus plate current-collecting body of said combined electrical core utmost point group be not with the plus plate current-collecting body of the monomer electricity core utmost point group of the negative current collector welding of other monomer electricity core utmost point group, the negative current collector of said combined electrical core utmost point group be not with the negative current collector of the electric core utmost point of the monomer group of the plus plate current-collecting body welding of other monomer electricity core utmost point group.
6. novel high-voltage lithium ion electrokinetic cell according to claim 1 is characterized in that said positive wire and Positive Poles are aluminium material, and said negative wire and negative pole pole are copper material, said negative wire plating nickel on surface.
7. according to claim 1 or 6 described novel high-voltage lithium ion electrokinetic cells, it is characterized in that said positive wire, the negative wire outside and bottom are coated with insulation spacer.
8. novel high-voltage lithium ion electrokinetic cell according to claim 1 is characterized in that said battery cover is provided with the voltage monitoring terminal, and said voltage monitoring terminal is connected the connecting portion of said monomer electricity core utmost point group through the voltage monitoring lead-in wire.
9. novel high-voltage lithium ion electrokinetic cell according to claim 8 is characterized in that, said voltage monitoring lead-in wire is the copper lead-in wire.
10. according to claim 1 or 8 described novel high-voltage lithium ion electrokinetic cells, it is characterized in that, on said battery cover, be provided with safety valve and liquid injection hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102033710A CN102683755A (en) | 2012-06-19 | 2012-06-19 | Novel high-voltage lithium-ion power battery |
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| CN2012102033710A CN102683755A (en) | 2012-06-19 | 2012-06-19 | Novel high-voltage lithium-ion power battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094622A (en) * | 2013-02-06 | 2013-05-08 | 山东威斯特车业有限公司 | Lithium ion battery |
| CN103199202A (en) * | 2013-03-19 | 2013-07-10 | 东莞市力嘉电池有限公司 | Lithium ion power battery |
| CN107026252A (en) * | 2017-05-16 | 2017-08-08 | 苏州炬鸿通讯电脑科技有限公司 | Lithium battery integral type leader |
| CN110364674A (en) * | 2019-06-11 | 2019-10-22 | 温州大学新材料与产业技术研究院 | A kind of soft-package battery of high voltage and preparation method thereof |
| CN111106300A (en) * | 2019-01-30 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Battery unit cell module |
| WO2023050254A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and method and apparatus for manufacturing battery cell |
| WO2023087217A1 (en) * | 2021-11-18 | 2023-05-25 | 宁德时代新能源科技股份有限公司 | Battery cell, fabrication method therefor, fabrication device, battery, and electrical apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202004053U (en) * | 2011-03-28 | 2011-10-05 | 海能达通信股份有限公司 | Battery |
-
2012
- 2012-06-19 CN CN2012102033710A patent/CN102683755A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202004053U (en) * | 2011-03-28 | 2011-10-05 | 海能达通信股份有限公司 | Battery |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094622A (en) * | 2013-02-06 | 2013-05-08 | 山东威斯特车业有限公司 | Lithium ion battery |
| CN103199202A (en) * | 2013-03-19 | 2013-07-10 | 东莞市力嘉电池有限公司 | Lithium ion power battery |
| CN107026252A (en) * | 2017-05-16 | 2017-08-08 | 苏州炬鸿通讯电脑科技有限公司 | Lithium battery integral type leader |
| CN111106300A (en) * | 2019-01-30 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Battery unit cell module |
| CN110364674A (en) * | 2019-06-11 | 2019-10-22 | 温州大学新材料与产业技术研究院 | A kind of soft-package battery of high voltage and preparation method thereof |
| WO2023050254A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and method and apparatus for manufacturing battery cell |
| WO2023087217A1 (en) * | 2021-11-18 | 2023-05-25 | 宁德时代新能源科技股份有限公司 | Battery cell, fabrication method therefor, fabrication device, battery, and electrical apparatus |
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Application publication date: 20120919 |