CN203218346U - Lithium ion battery wound core termination adhesive tape coating structure - Google Patents
Lithium ion battery wound core termination adhesive tape coating structure Download PDFInfo
- Publication number
- CN203218346U CN203218346U CN2013202471344U CN201320247134U CN203218346U CN 203218346 U CN203218346 U CN 203218346U CN 2013202471344 U CN2013202471344 U CN 2013202471344U CN 201320247134 U CN201320247134 U CN 201320247134U CN 203218346 U CN203218346 U CN 203218346U
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- Prior art keywords
- adhesive tape
- wound core
- lithium ion
- ion battery
- core body
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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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- Connection Of Batteries Or Terminals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model relates to a lithium ion battery wound core termination adhesive tape coating structure. The lithium ion battery wound core termination adhesive tape coating structure comprises a positive plate with a tub protecting adhesive tape, a negative plate with a tub protecting adhesive tape and a diaphragm between the positive plate and the negative plate, the positive plate, the negative plate and the diaphragm are wound together to form a wound core body, the outer surface of the wound core body is coated with a circle of termination adhesive tape in a wound manner, and two ends of the termination adhesive tape are overlapped by 0-15mm after the termination adhesive tape coats for a circle. After the wound core body is wounded, the outer surface of the wound core body is coated with one circle of terminal adhesive tape, the positive and negative plates are tailed and fixed, the side edges and the top end of the wound core are prevented for short circuit, processes for coating side adhesive tapes and head adhesive tapes are decreased, operation is simple, and cost is lowered. Hidden dangers such as damage and puncture to the positive and negative plates and the diaphragm on the surface layer of the wound core are avoided, battery safety performance is improved, battery thickness is decreased, an assembly process of putting the wound core into a shell is benefitted, and processing production efficiency and product quality are improved.
Description
Technical field
The utility model relates to a kind of lithium ion battery coil core stop adhesive rubber-wrapping structure, belongs to lithium ion battery and makes the field.
Background technology
Lithium ion battery coil core uses automatic (semi-automatic) up-coiler to reel in manufacturing process.Respectively will be with the special-purpose barrier film winding shaping of the positive plate of anode ear, the negative plate that has negative electrode lug and the lithium ion battery between the both positive and negative polarity, again with the stickup that finishes up of the volume core of stop adhesive after with moulding, volume core after guaranteeing to be shaped neatly, not at random, guarantee that the battery exterior quality behind the finished product is good.And the use of stop adhesive also has the effect of protection volume core, makes battery unsafe acts in use not occur going into shell and finished product battery.But the technology of some encapsulate bands can not well realize above purpose at present.Present battery design and produce, volume core are reeled and are finished the back roll up hidden danger such as core is collided with easily, stabs in circulation, operating process.The actual production operation needs that also the volume core side is carried out gummed paper and pastes.Roll up surface scuffing easily, the breakage of core in the assembling process thereby make the production cost increase; increased the potential safety hazard of product; volume cored structure schematic diagram after the rubberizing as shown in Figure 2; as can be seen from Figure 2; the top of stop adhesive is not wrapping to volume core top edge; volume core top edge can not be protected well, does not have the side of gummed paper parcel to be easy to be scratched by housing when going into shell, forms short circuit.And after follow-up assembling added banking stop, banking stop might be expressed to volume core top edge and cause membrane ruptures to cause the generation of unsafe acts.So lithium ion battery stop adhesive encapsulation techniques is very big to the security performance influence of battery.
Chinese patent CN202585646U discloses a kind of lithium ion battery of novel coiling structure, described winding-structure comprises positive plate, negative plate and the barrier film between positive plate and negative plate, described positive plate, negative plate and barrier film be coiling together, the skin of whole winding-structure outermost layer positive plate is provided with anode ear, one deck double faced adhesive tape is posted in the position of the corresponding outer anode ear of internal layer, described double faced adhesive tape sticks on positive plate on the outermost layer of whole winding-structure, thereby reach the purpose of fixing wound structure, adopt double faced adhesive tape to fix winding-structure, the overlapping situation of gummed paper of having avoided conventional transparent glue stop adhesive to cause, thereby reduced the thickness of winding-structure, and then can promote the battery battery core capacity.But in actual production, Double-face gummed paper is pasted and is used for artificial the stickup only, has reduced operating efficiency on the one hand, on the other hand, the volume wicking surface does not have any security fence, and volume wicking surface pole piece and barrier film are collided with easily, stab, scratch, and the potential safety hazard of product is very big.
Chinese patent CN201387921Y(number of patent application: 200920130422.5) disclose a kind of lithium ion battery coil core rubberizing structure, comprise lithium ion battery coil core, stop adhesive on the battery roll core and bottom glue are connected as a single entity, and this utility model cost is low, production efficiency is high.But in this patent, only mentioned the relation between stop adhesive and the bottom gummed paper, side and the top margin of volume core are not all protected; battery roll core is when circulation, assembling behaviour; side and top margin are vulnerable to collide with, stab, and production cost is increased, and have potential safety hazard.
Summary of the invention
At the deficiencies in the prior art; provide a kind of easy and simple to handle, efficient; safer a kind of lithium ion battery coil core stop adhesive rubber-wrapping structure; stop adhesive rubber-wrapping structure of the present utility model can be protected each potential safety hazard position that battery is rolled up the heart; improved the security performance of battery; reduce the number of times of encapsulate, reduce battery cost.
A kind of lithium ion battery coil core stop adhesive rubber-wrapping structure; comprise the positive plate of band lug protection glue, the negative plate of band lug protection glue and the barrier film between positive plate and negative plate; positive plate, negative plate and barrier film be coiling core body together; it is characterized in that: the described coating at this external surface of volume core is wound with a circle termination adhesive tape; the termination adhesive tape will be rolled up the core body and envelope, and described termination adhesive tape coats circle back overlapping a 0～15mm in two ends.
Preferably, the top edge of described termination adhesive tape is higher than the barrier film top edge 0.5～3mm of volume core body.
Preferably, the lower limb of described termination adhesive tape is apart from the lower limb 0.5～8mm of volume core body.The part that volume core body bottom is not terminated the adhesive tape coating is used for pasting primer.
Preferably, the thickness of described termination adhesive tape is 0.020～0.060mm.Stop adhesive is ultra-thin gummed paper, and good insulation performance and heat-resisting quantity are arranged.
The utility model is preferred, staggers mutually in the position of described termination adhesive tape coating one circle back two ends position overlapped and anode ear, negative electrode lug.Staggering mutually in the position that stops adhesive tape coating one circle back two ends position overlapped and anode ear, negative electrode lug, has reduced volume core thickness.
Advantage of the present utility model is as follows:
1, after the utility model volume core body is reeled, stop adhesive tape at this external surface of volume core with a circle and will roll up the core parcel, and the pole piece ending is fixing, prevent that side and the top of rolling up core are not short-circuited, reduced the technology of bag side glue and head glue, simple to operate, cost reduces.Avoid pole piece and the barrier film on volume core top layer to produce hidden danger such as damaging, puncture, improved battery safety, reduced cell thickness, be beneficial to the assembling procedure core winding into shell, promoted processing procedure production efficiency and product quality simultaneously.
2, termination adhesive tape of the present utility model will be rolled up the core coating fully; make positive plate, the side on volume core top layer injury-free; the top edge that stops adhesive tape is higher than the barrier film top edge 0～3mm of volume core body, has effectively protected the barrier film of volume core top edge and the damage of pole piece, and security performance improves greatly.
Description of drawings
Fig. 1 is the utility model lithium ion battery coil core stop adhesive rubber-wrapping structure schematic diagram;
Fig. 2 illustrates intention for existing lithium ion battery coil core rubber-wrapping structure;
Wherein, 1, negative electrode lug; 2, anode ear; 3, negative plate; 4, barrier film; 5, positive plate; 6, stop adhesive tape; 7, volume core body; 8, anode ear protection glue, 9, negative electrode lug protection glue; 10, stop adhesive tape two ends position overlapped.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further, but the utility model protection range is not limited thereto.
Embodiment 1:
A kind of lithium ion battery coil core stop adhesive rubber-wrapping structure; structure as shown in Figure 1; the positive plate 5 that comprises band anode ear protection glue 8; the negative plate 3 of band negative electrode lug protection glue 9 and the barrier film 4 between positive plate and negative plate; positive plate 5; negative plate 3 and barrier film 4 be coiling core body body 7 together; be wound with a circle in the coating of volume core body 7 outer surfaces and stop adhesive tape 6; termination adhesive tape 6 will be rolled up core body 7 and envelope; stop adhesive tape 6 and coat circle back two ends position overlapped and an anode ear 2; stagger mutually in the position of negative electrode lug 1; stop adhesive tape 6 and coat a circle back overlapping 3mm in two ends; the top edge height that the stops adhesive tape 6 barrier film top edge 1mm of core body that makes the test stops the lower limb of adhesive tape 6 apart from the lower limb 5mm of volume core body.The thickness that stops adhesive tape 6 is 0.020mm.
In the utility model production process, after positive plate, negative plate and barrier film 4 reeled, make to stop adhesive tape 6 and twine volume core bodies 7 one circles.Make to stop the adhesive tape 6 top edge height core barrier film 4 top edge 1mm that make the test, stop adhesive tape 6 lower limbs and volume core 7 bottoms apart from 5mm, twine volume core 1 circle back and stop the adhesive tape overlapping 3mm in two ends.Top glue need not paste in the place at volume core aluminium pole ears.The part that volume core body bottom is not terminated the adhesive tape coating is used for pasting primer.
Embodiment 2:
With embodiment 1 described lithium ion battery coil core stop adhesive rubber-wrapping structure, difference is,
Stop adhesive tape 6 and coat a circle back overlapping 5mm in two ends, the top edge height that the stops adhesive tape 6 barrier film top edge 0.5mm of core body that makes the test stops the lower limb of adhesive tape 6 apart from the lower limb 3mm of volume core body, and the thickness that stops adhesive tape 6 is 0.060mm.
Claims (5)
1. lithium ion battery coil core stop adhesive rubber-wrapping structure; comprise the positive plate of band lug protection glue, the negative plate of band lug protection glue and the barrier film between positive plate and negative plate; positive plate, negative plate and barrier film be coiling core body together; it is characterized in that: the described coating at this external surface of volume core is wound with a circle termination adhesive tape; the termination adhesive tape will be rolled up the core body and envelope, and described termination adhesive tape coats circle back overlapping a 0～15mm in two ends.
2. lithium ion battery coil core stop adhesive rubber-wrapping structure according to claim 1 is characterized in that, the top edge of described termination adhesive tape is higher than the barrier film top edge 0.5～3mm of volume core body.
3. lithium ion battery coil core stop adhesive rubber-wrapping structure according to claim 1 is characterized in that, the lower limb of described termination adhesive tape is apart from the lower limb 0.5～8mm of volume core body.
4. according to the described arbitrary lithium ion battery coil core stop adhesive rubber-wrapping structure of claim 1-3, it is characterized in that the thickness of described termination adhesive tape is 0.020～0.060mm.
5. according to the described arbitrary lithium ion battery coil core stop adhesive rubber-wrapping structure of claim 1-3, it is characterized in that staggering mutually in the position of described termination adhesive tape coating one circle back two ends position overlapped and anode ear, negative electrode lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202471344U CN203218346U (en) | 2013-05-06 | 2013-05-06 | Lithium ion battery wound core termination adhesive tape coating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202471344U CN203218346U (en) | 2013-05-06 | 2013-05-06 | Lithium ion battery wound core termination adhesive tape coating structure |
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| Publication Number | Publication Date |
|---|---|
| CN203218346U true CN203218346U (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202471344U Expired - Fee Related CN203218346U (en) | 2013-05-06 | 2013-05-06 | Lithium ion battery wound core termination adhesive tape coating structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302104A (en) * | 2016-04-15 | 2017-10-27 | 宁德新能源科技有限公司 | Improve method of flexible packing lithium ion battery energy density and products thereof |
| CN111463497A (en) * | 2020-04-17 | 2020-07-28 | 山东聚信新能源科技有限公司 | Local deformation improvement method of high-energy-density flexible package ion battery and battery |
| CN115692863A (en) * | 2022-11-04 | 2023-02-03 | 厦门海辰储能科技股份有限公司 | Structure and encapsulation method of battery core, battery monomer, energy storage device and electric equipment |
-
2013
- 2013-05-06 CN CN2013202471344U patent/CN203218346U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302104A (en) * | 2016-04-15 | 2017-10-27 | 宁德新能源科技有限公司 | Improve method of flexible packing lithium ion battery energy density and products thereof |
| CN111463497A (en) * | 2020-04-17 | 2020-07-28 | 山东聚信新能源科技有限公司 | Local deformation improvement method of high-energy-density flexible package ion battery and battery |
| CN111463497B (en) * | 2020-04-17 | 2021-05-11 | 山东聚信新能源科技有限公司 | Local deformation improvement method of high-energy-density flexible package ion battery and battery |
| CN115692863A (en) * | 2022-11-04 | 2023-02-03 | 厦门海辰储能科技股份有限公司 | Structure and encapsulation method of battery core, battery monomer, energy storage device and electric equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20190506 |