CN104681760A - Fixing device for internal structure winding body of lithium ion power battery - Google Patents
Fixing device for internal structure winding body of lithium ion power battery Download PDFInfo
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- CN104681760A CN104681760A CN201510074369.1A CN201510074369A CN104681760A CN 104681760 A CN104681760 A CN 104681760A CN 201510074369 A CN201510074369 A CN 201510074369A CN 104681760 A CN104681760 A CN 104681760A
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- coiling body
- loop configuration
- winding body
- circle ring
- internal structure
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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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Abstract
The invention discloses a fixing device for an internal structure winding body of a lithium ion power battery. The main body is integrally formed and is a non-sealed plastic ring, the non-sealed plastic ring comprises two end ports, one end port is overlapped with the length direction of a winding body, and the other end port is located between the winding body and an end cover for isolating and fixing; the non-sealed plastic ring comprises three layers of annular structures which are sequentially arranged from top to bottom in a close fitting manner, the bottoms of the three layers of annular structures are placed and fixed in an alignment manner, the heights gradually decrease from top to bottom, the thicknesses of the three layers of annular structures are different, supporting bodies are uniformly arranged on the annular structure at the lowest side to isolate and fix the winding body and the end cover, and a special fixing piece is introduced to suspend the winding body in the shell, so as to prevent shake caused by transportation and effectively fix the winding body in the shell at the same time.
Description
Technical field
The present invention relates to a kind of fixture of lithium-ion-power cell internal structure coiling body, belong to new energy resource power battery technical field.
Background technology
along with development that is economic and society, battery particularly lithium battery all just at high speed development.Lithium battery, due to its high-energy-density, long-life, environmental protection, is more and more subject to people's attention, and lithium electricity battery will have a extensive future in electric vehicle power sources and accumulation power supply.Existing lithium battery production technology; Directly coiling body is inserted in shell, and the shell squeeze crack in order to prevent coiling body imbibe from causing, working strength of having to is large, the shell that thickness is thick.Outer casing thickness is thick, and intensity is large, just sacrifices battery energy density when bulk density ratio.Particularly jumbo cylinder electrokinetic cell coiling body diameter is large, expands large after imbibition, large to the extruding force of shell, if with thin aluminum hull, then easily racked, cause battery failure, to battery core ontological existence potential safety hazard.
Summary of the invention
The object of this invention is to provide a kind of fixture of lithium-ion-power cell internal structure coiling body, coiling body can not be rocked in the enclosure, be applicable to Large Copacity, high-power lithium-ion-power cell.
The technical solution used in the present invention is: a kind of fixture of lithium-ion-power cell internal structure coiling body, its innovative point is: main body is formed in one, and untight plastic circle ring, this plastic material has certain pliability, in the process putting into inside battery, this untight opening is under certain pulling force effect, opening can become large a little, be enclosed within so that more convenient on coiling body, its certain pliability also facilitates it to load battery case, the plastic circle ring that this fixture is right comprises 2 ports, the length direction of Single port and coiling body overlaps, another port is between coiling body and end cap, realize interval and fixing effect, the material of plastic circle ring is the plastics of resistance to lithium-ion battery electrolytes, as fluoro-containing plastic material, polypropylene, polyethylene, ethylene propylene diene rubber, polyether-ether-ketone etc., preferably polyethylene material.
Described untight plastic circle ring comprises the 3 layers of loop configuration fitting tightly setting from top to bottom successively, and all alignment placement is fixing bottom 3 layers of loop configuration, highly successively decrease successively from top to bottom, the thickness of these 3 layers of loop configuration described is all not identical, respectively corresponding current collecting plates, lug position end face rub flat section, and coiling body is fixing, and the loop configuration of bottom has also been evenly arranged supporter, realize keeping the interval between coiling body and end cap to play the fixing of the length direction of coiling body.
Further, the structure of described supporter is: supporter entirety is loop configuration, and aliging with untight plastic circle ring to place and fix in bottom, is highly less than the loop configuration of bottom, and fits tightly with plastic circle ring; This supporter is placed with multiple back-up block, preferably 8 equal-sized back-up blocks, back-up block forms 4 back-up block groups between two, and arranging distance between this back-up block group is 0.1 ~ 90mm, and the distance between two between back-up block is set to 0.1 ~ 90mm.
Further, described back-up block shape is protruding block, and take supporter as matrix bearing, protrusion direction is towards the center of plastic circle ring.
Beneficial effect of the present invention is as follows:
(1) fixture of lithium-ion-power cell internal structure coiling body of the present invention, importing special fixture is fixed in shell by unsettled for coiling body, prevent carrying and cause and rock, this product main choice for use thickness is thin, the shell that intensity is little promotes the energy density when volume ratio of battery, also effectively secures the coiling body in shell simultaneously.
(2) fixture of lithium-ion-power cell internal structure coiling body of the present invention, adopt this fixture that cylindrical electrical core can be made unsettled fixing, coiling body can not be rocked in the enclosure, secure the coiling body in shell significantly, prevent battery core from rocking, squeeze crack aluminum pipe, and the potential safety hazard preventing battery.Be applicable to Large Copacity, high-power lithium-ion-power cell.
(3) fixture of lithium-ion-power cell internal structure coiling body of the present invention, for the energy density when volume ratio improving lithium-ion-power cell, fastness, fail safe is very helpful; And product manufacture is simple, cheap, easily import production, the gap between back-up block group is conducive to flowing and the injection of electrolyte, and is conducive to retaining more electrolyte.
(4) fixture of lithium-ion-power cell internal structure coiling body of the present invention, cylindrical electrical core is unsettled fixing, there will not be touching aluminum pipe inwall, rack the phenomenon of aluminum pipe, therefore choice for use is conducive to lightweight, thickness thin (0.1 to 1 millimeter) shell, preferred aluminium material, thus promote the energy density when volume ratio of battery.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Fig. 1 is the fixture overall structure schematic perspective view of a kind of lithium-ion-power cell internal structure of the present invention coiling body.
Fig. 2 is battery structure (containing the end cap) schematic isometric assembled.
Fig. 3 is the core strueture schematic front view assembled.
Fig. 4 is the schematic diagram after the present invention wraps up coiling body.
Fig. 5 is that electrical core coiling body of the present invention and fixture load fixation design sketch after battery case.
Fig. 6 is the overall vertical view of fixture of the present invention.
Fig. 7 is the battery core internal structure and battery case (containing end cap) schematic diagram that assemble.
Fig. 8 relative correspondence position that to be the present invention intend with electrical core coiling body assembling is according to illustrating.
Embodiment
The present invention relates to a kind of fixture of lithium-ion-power cell internal structure coiling body, as a shown in Figure 6: main body is formed in one, and untight plastic circle ring, this untight plastic circle ring comprises 2 ports, the length direction of Single port and coiling body overlaps, another port is between coiling body and end cap, realizes interval and fixing effect.The fixture of lithium-ion-power cell internal structure coiling body of the present invention, for the energy density when volume ratio improving lithium-ion-power cell, fastness, fail safe is very helpful; And product manufacture is simple, cheap, easily import production, in use, can prevent battery core from rocking, expansion squeeze crack aluminum pipe, secure the coiling body in shell significantly and prevent the potential safety hazard of battery core.
In order to improve the energy density when volume ratio of lithium-ion-power cell, fastness, prevent battery core from rocking, expansion squeeze crack aluminum pipe, secure the coiling body in shell significantly and prevent the potential safety hazard of battery core, the present invention is as shown in Figure 1: untight plastic circle ring comprises the 3 layers of loop configuration fitting tightly setting from top to bottom successively, be respectively ground floor loop configuration 1, second layer loop configuration 2 and third layer loop configuration 3, and all alignment placement is fixing bottom 3 layers of loop configuration, the thickness of these 3 layers of loop configuration is all not identical, the current collecting plates of corresponding battery respectively, lug position end face rub flat section, and three of coiling body positions are fixed, and the loop configuration of bottom has also been evenly arranged supporter, realize keeping the interval between coiling body and end cap to play the fixing of the length direction of coiling body.
As shown in Figure 1: the structure of supporter is: supporter entirety is loop configuration, aliging with untight plastic circle ring to place and fix in bottom, is highly less than the third layer loop configuration 3 of bottom, and fits tightly with plastic circle ring; This supporter is placed with 8 equal-sized back-up blocks 4, back-up block 4 forms 4 back-up block groups between two, and arrange distance between this back-up block group for 30mm, the distance between two between back-up block 4 is set to 0.9mm.
As shown in Figure 1: back-up block 4 shape is protruding block, take supporter as matrix bearing, protrusion direction is towards the center of plastic circle ring.
The course of work is as follows: opened by untight plastics fixed bolster, be enclosed within the two ends of cylindrical electrical core coiling body length, make as Fig. 2, the aluminum shell column battery core 6 coiling body two ends containing end cap 5 assembled shown in 3 withstand on back-up block 4, the two ends of cylindrical electrical core are fixed on the convergent force not closing plastics fixed bolster, the cylindrical electrical core coiling body being inserted in fixture is put into aluminum pipe, according to the ground floor loop configuration 1-current collecting plates 31 that plastic fixture in Fig. 1 and Fig. 84 and battery core 6 coiling body assemble, second layer loop configuration 2-lug position end face rub flat section 21, third layer loop configuration 3-coiling body 11 respectively relative correspondence position is contrasted, finished figure is as Fig. 4, shown in 5, cylindrical electrical core 6 is fixedly secured.The battery core 6 internal structure schematic diagram assembled as shown in Figure 7.
The above is the preferred embodiment of the present invention, can not limit the interest field of the present invention with this.It should be pointed out that for those skilled in the art, technical scheme of the present invention is modified or equivalent replacement, do not depart from protection scope of the present invention.
Claims (3)
1. the fixture of a lithium-ion-power cell internal structure coiling body, it is characterized in that: main body is formed in one, and untight plastic circle ring, this untight plastic circle ring comprises 2 ports, the length direction of Single port and coiling body overlaps, another port is between coiling body and end cap, realizes interval and fixing effect;
Described untight plastic circle ring comprises the 3 layers of loop configuration fitting tightly setting from top to bottom successively, and all alignment placement is fixing bottom 3 layers of loop configuration, highly successively decrease successively from top to bottom, the thickness of these 3 layers of loop configuration described is all not identical, corresponding current collecting plates respectively, lug position end face rub flat section, and three of coiling body positions are fixed, and the loop configuration of bottom has also been evenly arranged supporter, realize keeping the interval between coiling body and end cap to play the fixing of the length direction of coiling body.
2. the fixture of lithium-ion-power cell internal structure coiling body according to claim 1, it is characterized in that: the structure of described supporter is: supporter entirety is loop configuration, align with untight plastic circle ring to place and fix in bottom, highly be less than the loop configuration of bottom, and fit tightly with plastic circle ring; This supporter is placed with multiple equal-sized back-up block, back-up block forms a back-up block group between two, and arranging distance between back-up block group is 0.1 ~ 90mm, and the distance between two between back-up block is set to 0.1 ~ 90mm.
3. the fixture of lithium-ion-power cell internal structure coiling body according to claim 2, it is characterized in that: described back-up block shape is protruding block, take supporter as matrix bearing, protrusion direction is towards the center of plastic circle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074369.1A CN104681760B (en) | 2015-02-12 | 2015-02-12 | Fixing device for internal structure winding body of lithium ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074369.1A CN104681760B (en) | 2015-02-12 | 2015-02-12 | Fixing device for internal structure winding body of lithium ion power battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104681760A true CN104681760A (en) | 2015-06-03 |
| CN104681760B CN104681760B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510074369.1A Active CN104681760B (en) | 2015-02-12 | 2015-02-12 | Fixing device for internal structure winding body of lithium ion power battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088037A (en) * | 2018-06-22 | 2018-12-25 | 合肥国轩高科动力能源有限公司 | A kind of cylindrical battery current collecting plates welding structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003331801A (en) * | 2002-05-17 | 2003-11-21 | Tocad Energy Co Ltd | Battery pack structure |
| CN2710173Y (en) * | 2004-07-09 | 2005-07-13 | 宏达国际电子股份有限公司 | Battery fixing seat |
| US20110064982A1 (en) * | 2009-09-14 | 2011-03-17 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Fixing mechanism |
| CN204464343U (en) * | 2015-02-12 | 2015-07-08 | 实联长宜淮安科技有限公司 | A kind of fixture of lithium-ion-power cell internal structure coiling body |
-
2015
- 2015-02-12 CN CN201510074369.1A patent/CN104681760B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003331801A (en) * | 2002-05-17 | 2003-11-21 | Tocad Energy Co Ltd | Battery pack structure |
| CN2710173Y (en) * | 2004-07-09 | 2005-07-13 | 宏达国际电子股份有限公司 | Battery fixing seat |
| US20110064982A1 (en) * | 2009-09-14 | 2011-03-17 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Fixing mechanism |
| CN204464343U (en) * | 2015-02-12 | 2015-07-08 | 实联长宜淮安科技有限公司 | A kind of fixture of lithium-ion-power cell internal structure coiling body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088037A (en) * | 2018-06-22 | 2018-12-25 | 合肥国轩高科动力能源有限公司 | A kind of cylindrical battery current collecting plates welding structure |
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| Publication number | Publication date |
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| CN104681760B (en) | 2017-05-10 |
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