CN204333110U - Electrodes of lithium-ion batteries and there is its lithium ion battery - Google Patents
Electrodes of lithium-ion batteries and there is its lithium ion battery Download PDFInfo
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- CN204333110U CN204333110U CN201420657096.4U CN201420657096U CN204333110U CN 204333110 U CN204333110 U CN 204333110U CN 201420657096 U CN201420657096 U CN 201420657096U CN 204333110 U CN204333110 U CN 204333110U
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- lithium
- white space
- pole piece
- electrodes
- ion battery
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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 utility model discloses a kind of electrodes of lithium-ion batteries and there is its lithium ion battery, electrodes of lithium-ion batteries comprises the first white space of the uncoated active material in two sides that coated on both sides has the dispensing area of active material and is positioned at pole piece two ends, described first white space is after winding or lamination, realize electric current as lug to draw, also comprise the second white space of the uncoated active material in two sides be arranged in the middle of pole piece.The electrodes of lithium-ion batteries that the utility model provides, blank collector is provided with due in the middle of pole piece, this blank collector can make the electrolyte injected in subsequent handling injection process by accelerating permeability during blank collector, thus reduction electrolyte absorbs uneven probability.
Description
Technical field
The utility model relates to battery, particularly relates to a kind of electrodes of lithium-ion batteries and has its lithium ion battery.
Background technology
Along with electric automobile, the greatly developing of energy storage industry, the research and development of jumbo lithium ion battery receive vast concern.Jumbo lithium ion battery, because battery capacity is comparatively large, easily occurs that battery pole piece absorbs active material that is uneven and battery to the electrolyte injected and can not play a role, the problems such as the capacity of battery does not reach anticipated capability, chemical property difference; In addition, the heat that in charge and discharge process, inside battery produces distributes not in time and causes potential safety hazard easily to distribute, thus affects the chemical property of high capacity cell, affects capacity performance etc.
Summary of the invention
For above-mentioned prior art present situation, technical problem to be solved in the utility model is, provides a kind of and can improve the electrodes of lithium-ion batteries of electrolyte permeability rate and have its lithium ion battery.
In order to solve the problems of the technologies described above, a kind of electrodes of lithium-ion batteries provided by the utility model, comprise the first white space of the uncoated active material in two sides that coated on both sides has the dispensing area of active material and is positioned at pole piece two ends, described first white space is after winding or lamination, realize electric current as lug to draw, also comprise the second white space of the uncoated active material in two sides be arranged in the middle of pole piece.
Wherein in an embodiment, described second white space is multiple, and multiple described second white space is positioned on the every one deck after winding or lamination or every a slice pole piece.
Wherein in an embodiment, described second white space is triangular in shape, quadrangle, rectangle or irregularly shaped.
Wherein in an embodiment, described second white space runs through the rear battery core two ends of winding.
A kind of lithium ion battery provided by the utility model, comprises above-mentioned pole piece.
Wherein in an embodiment, described lithium ion battery also comprises reel assembly, and described pole piece coiling is on described reel assembly.
Wherein in an embodiment, described reel assembly comprises spool, and described spool is hollow-core construction.
Wherein in an embodiment, described reel assembly also comprises insulating case, and described insulating case is arranged on one end of spool.
Wherein in an embodiment, the arranged outside of described spool has the thermal shrinkable sleeve of insulation.
Wherein in an embodiment, described spool is aluminum or aluminum alloy material.
The electrodes of lithium-ion batteries that the utility model provides and there is its lithium ion battery, blank collector is provided with in the middle of pole piece, this blank collector can make the electrolyte injected in subsequent handling injection process by accelerating permeability during blank collector, thus reduction electrolyte absorbs uneven probability.
The beneficial effect that the utility model additional technical feature has will be described in this specification embodiment part.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electrodes of lithium-ion batteries in the utility model embodiment;
Fig. 2 is the end view after pole piece laminating shown in Fig. 1;
Fig. 3 is the end view after pole piece coiling shown in Fig. 1;
Fig. 4 is for having the vertical view of the lithium ion battery of pole piece shown in Fig. 1;
Fig. 5 is the profile of the reel assembly of lithium ion battery shown in Fig. 4.
Description of reference numerals: 10, pole piece; 11, dispensing area; 12, the first white space; 13, the second white space; 20, reel assembly; 21, spool; 22, insulating case; 23, thermal shrinkable sleeve.
Embodiment
And the utility model is described in detail below with reference to the accompanying drawings in conjunction with the embodiments.It should be noted that, when not conflicting, the feature in following embodiment and embodiment can combine mutually.
Fig. 1 is the structural representation of the electrodes of lithium-ion batteries in the utility model embodiment, and Fig. 2 is the end view after pole piece laminating shown in Fig. 1, and Fig. 3 is the end view after pole piece coiling shown in Fig. 1.As Figure 1-3, electrodes of lithium-ion batteries 10 in the utility model embodiment comprises the first white space 12 of the uncoated active material in two sides that coated on both sides has the dispensing area 11 of active material and is positioned at pole piece two ends, described first white space 12, after winding or lamination, realizes electric current as lug and draws; Also comprise the second white space 13 of the uncoated active material in two sides be arranged in the middle of pole piece.Second white space 13 can make the electrolyte injected in subsequent handling injection process by accelerating infiltration rate during blank collector, thus reduction electrolyte absorbs uneven probability.
Preferably, described second white space 13 is multiple, and multiple described second white space 13 is positioned on every one deck after winding or lamination of battery pole piece or every a slice pole piece.
Described second white space 13 is triangular in shape, quadrangle, rectangle or irregularly shaped, can adapt to different cutting dies.
Preferably, described second white space 13 runs through the rear battery core two ends of winding, and the intermediate blank collector after running through, can make electrolyte rapidly drop to bottom, makes the pole piece permeability of liquid injection port another side stronger.
In another embodiment of the utility model, provide a kind of lithium ion battery had in above-described embodiment.As shown in Figure 4, lithium ion battery is winding type lithium ion battery, and it comprises reel assembly 20 and is wound in the pole piece 10 in the above-described embodiment on reel assembly 20.
Fig. 5 is the profile of the reel assembly in the utility model embodiment.As shown in Figure 5, described reel assembly 20 comprises spool 21, and spool 21 comprises for hollow-core construction.Hollow-core construction is conducive to electrolyte through spool 21, flows to the liquid injection port other end, increases the high-speed channel of electrolyte permeability; Also provide a heat dissipation channel, the heat produced in the middle of battery core is distributed from spool 21 two ends as early as possible.Preferably, described reel assembly 20 also comprises insulating case 22, is arranged on one end of spool 21.Insulating case 22 extends the length of spool 21, and one end of spool 21 is contacted with anode ear or negative lug, becomes attached in one end, avoids affecting the indirect contact of both positive and negative polarity lug, thus produces short circuit phenomenon.Preferably, the arranged outside of described spool 21 has the thermal shrinkable sleeve 23 of insulation, by heating, is enclosed within outside spool 21, increases the diameter of spool 21.Preferably, described spool 21 is aluminum or aluminum alloy material; Conductibility is good, is conducive to the effect of dispelling the heat.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (10)
1. an electrodes of lithium-ion batteries, comprise first white space (12) of the uncoated active material in two sides that coated on both sides has the dispensing area of active material (11) and is positioned at pole piece (10) two ends, described first white space (12), after winding or lamination, realizes electric current as lug and draws; It is characterized in that, also comprise second white space (13) of the uncoated active material in two sides be arranged in the middle of pole piece (10).
2. electrodes of lithium-ion batteries according to claim 1, it is characterized in that, described second white space (13) is for multiple, and multiple described second white space (13) is positioned on the every one deck after winding or lamination or every a slice pole piece.
3. electrodes of lithium-ion batteries according to claim 1, is characterized in that, described second white space (13) is triangular in shape, quadrangle, rectangle or irregularly shaped.
4. electrodes of lithium-ion batteries according to claim 1, is characterized in that, described second white space (13) runs through the rear battery core two ends of winding.
5. a lithium ion battery, is characterized in that, comprises as the pole piece (10) in claim 1-4 as described in any one.
6. lithium ion battery according to claim 5, is characterized in that, described lithium ion battery also comprises reel assembly (20), and described pole piece (10) is wound on described reel assembly (20).
7. lithium ion battery according to claim 6, is characterized in that, described reel assembly (20) comprises spool (21), and described spool (21) is hollow-core construction.
8. lithium ion battery according to claim 7, is characterized in that, described reel assembly (20) also comprises insulating case (22), and described insulating case (22) is arranged on one end of spool (21).
9. lithium ion battery according to claim 7, is characterized in that, the arranged outside of described spool (21) has the thermal shrinkable sleeve (23) of insulation.
10. lithium ion battery according to claim 7, is characterized in that, described spool (21) is aluminum or aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657096.4U CN204333110U (en) | 2014-11-05 | 2014-11-05 | Electrodes of lithium-ion batteries and there is its lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657096.4U CN204333110U (en) | 2014-11-05 | 2014-11-05 | Electrodes of lithium-ion batteries and there is its lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204333110U true CN204333110U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420657096.4U Active CN204333110U (en) | 2014-11-05 | 2014-11-05 | Electrodes of lithium-ion batteries and there is its lithium ion battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018001164A1 (en) * | 2016-06-27 | 2018-01-04 | 宁德时代新能源科技股份有限公司 | Cell and battery using same |
-
2014
- 2014-11-05 CN CN201420657096.4U patent/CN204333110U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018001164A1 (en) * | 2016-06-27 | 2018-01-04 | 宁德时代新能源科技股份有限公司 | Cell and battery using same |
| CN108713271A (en) * | 2016-06-27 | 2018-10-26 | 宁德时代新能源科技股份有限公司 | Battery core and the battery for using this battery core |
| CN108713271B (en) * | 2016-06-27 | 2021-09-21 | 宁德时代新能源科技股份有限公司 | Battery cell and battery using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel building Patentee after: Zhuhai silver dragon new energy Limited by Share Ltd. Address before: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel building Patentee before: Zhuhai Yinlong New Energy Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 519000 Guangdong province Zhuhai City Sanzao town Jinwan District Jinhu Road No. 16 Patentee after: YINLONG ENERGY Co.,Ltd. Address before: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel building Patentee before: Zhuhai silver dragon new energy Limited by Share Ltd. |