CN201838672U - Soft-package lithium-ion battery with reinforcing structure - Google Patents
Soft-package lithium-ion battery with reinforcing structure Download PDFInfo
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- CN201838672U CN201838672U CN2010202798102U CN201020279810U CN201838672U CN 201838672 U CN201838672 U CN 201838672U CN 2010202798102 U CN2010202798102 U CN 2010202798102U CN 201020279810 U CN201020279810 U CN 201020279810U CN 201838672 U CN201838672 U CN 201838672U
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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 relates to the technical field of batteries, in particular to a soft-package lithium-ion battery with a reinforcing structure. The soft-package lithium-ion battery with the reinforcing structure comprises a pole group comprising positive pole pieces, negative pole pieces and diaphragms, and also comprises a structure reinforcing board arranged at the outer layer of the pole group. The technical scheme disclosed by the utility model can improve the stability of the structural strength of the soft-package lithium-ion battery, effectively prevents the situation the diaphragms or the pole pieces in the inner layer of the pole group are easy to curve to cause dead zone and lithium analysis, and improves the reliability. The utility model reinforces the structure of the pole group by utilizing the structure reinforcing board, is beneficial to the following assembly and manufacture of the soft-package lithium-ion battery.
Description
Technical field
The utility model relates to the battery technology field, particularly a kind of structure-reinforced Soft Roll lithium ion battery.
Background technology
Lithium ion battery has operating voltage height, energy density height, light weight, advantage such as pollution-free, in recent years by widespread usage to industrial application and civil area.Along with the fast development growth of lithium ion battery industry, the lithium ion battery design cost pressure of stock size increases rapidly.Widen application, release personalized, diversification deisgn product, become new profit breach of each lithium ion battery producer and new market development direction gradually as exploitation specific function type battery (superhigh temperature/low temperature battery, quick charging battery etc.), aerofoil profile battery, thin slice (wing) shape macrocell, pocket baby battery, high power capacity high power electrokinetic cell etc.
Wherein, the big lamination Soft Roll of thin slice shape lithium ion battery especially has energy height, safe, thermal diffusivity good, shape plasticity is strong characteristics, the very wide model of application.For prior art, the design difficulty of the big lamination Soft Roll of thin slice shape lithium ion battery is that the planar structure support strength of thin slice battery utmost point group is poor, the easy local buckling of the internal layer barrier film of utmost point group or pole piece is uneven and produce the localized voids of utmost point group inside, so not only can have influence on the outward appearance of battery, more seriously in the battery charging and discharging use, near the utmost point group internal voids negative plate can produce the dead band and analyse lithium, will influence the electrical property and the security performance of battery.It is the key that guarantees the big lamination soft-package battery of thin slice shape unfailing performance that utmost point group planar structure is strengthened.Owing between the utmost point group of Soft Roll lithium ion battery and outer casing certain space is arranged, reinforces battery container merely or outside housing, set up the local deformation that ruggedized construction all is difficult to eliminate utmost point group inner plane structure.
The utility model content
In view of this, the purpose of this utility model provides a kind of structure-reinforced Soft Roll lithium ion battery, increase the planar structure support strength that reinforced boards improves utmost point group by utmost point group inside, the utmost point group inner plane structure that solves the Soft Roll lithium ion battery is easy to generate the problem of local deformation.
For this reason, the technical scheme that the utility model adopted is to propose a kind of structure-reinforced Soft Roll lithium ion battery, comprises by positive plate, negative plate and the folded utmost point group that constitutes of diaphragm volume, also comprises being arranged on the outer field structure-reinforced plate of described utmost point group.
Preferable, the structure of described structure-reinforced plate is net sheet or paper tinsel plate.
Preferable, described structure-reinforced sheet material matter is aluminium or copper.
Preferable, the material of described structure-reinforced plate is the reinforcement pole piece that single face applies active material.
Preferable, the size of described structure-reinforced plate is not more than the size of described positive plate or described negative plate.
Preferable, the thickness of described structure-reinforced plate is not less than the thickness of described positive plate or described negative plate.
Preferable, the shape of described structure-reinforced plate is identical with described utmost point group shape.
Preferable, described utmost point group is zig-zag type lamination or bag type lamination.
Preferable, the shape of described utmost point group is rectangle, circle, banana-shaped or triangle.
The beneficial effects of the utility model are: can improve the structural strength stability of Soft Roll lithium ion battery, the utmost point group inner plane structure that has effectively solved the Soft Roll lithium ion battery is easy to generate the problem of local deformation.Thereby prevented that the crooked injustice of utmost point group internal layer barrier film or pole piece from causing the dead band and analysing lithium, improved the reliability of battery.And copper foil plate/copper mesh sheet or aluminium foil plate/aluminium net sheet chemical stability in electrolyte is good, capacity of heat transmission is strong, processing and manufacturing is simple, cost is lower.The utility model has been reinforced utmost point group structure, helps follow-up assembly production.
Description of drawings
Fig. 1 is a kind of utmost point group structural representation of the structure-reinforced Soft Roll lithium ion battery that provides of the utility model embodiment;
Fig. 2 is the external structure schematic diagram of the structure-reinforced Soft Roll lithium ion battery of corresponding diagram 1;
Fig. 3 is a kind of utmost point group structural representation of the structure-reinforced Soft Roll lithium ion battery that provides of the utility model embodiment;
Fig. 4 is the external structure schematic diagram of the structure-reinforced Soft Roll lithium ion battery of corresponding diagram 3;
Fig. 5 is a kind of utmost point group structural representation of the structure-reinforced Soft Roll lithium ion battery that provides of the utility model embodiment;
Fig. 6 is the external structure schematic diagram of the structure-reinforced Soft Roll lithium ion battery of corresponding diagram 5.
Embodiment
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the structure-reinforced Soft Roll lithium ion battery that the utility model embodiment provides comprises diaphragm 2, positive plate 3, negative plate 4, wherein positive plate 3, negative plate 4 and diaphragm 2 constitute the utmost point group of lithium ion battery, utmost point group can be as shown in Figure 1 word formula lamination, also can be bag formula (aerofoil profile) lamination.The shape of utmost point group is different and different according to the shape of the battery of design, can be circle, polygon etc., and wherein polygon comprises shapes such as rectangle, banana-shaped or triangle.The utmost point group that is arranged on 1 pair of Soft Roll lithium ion battery of the outer field structure-reinforced plate of utmost point group plays the effect of support fixation, structure-reinforced plate 1 can be positioned at time skin of utmost point group as shown in Figure 1, promptly outside structure-reinforced plate 1, also have one deck diaphragm 2, also can be positioned at the outermost layer of utmost point group.Strengthen plate 1 material can but be not limited to and select metallic aluminium or copper, also can be the reinforcement pole piece that single face applies active material, and the structure of structure-reinforced plate 1 can but to be not limited to be paper tinsel plate or net sheet.Need to prove herein that active material is meant when battery discharge produces electric energy by chemical reaction, and reverts to the pole plate material of stock blend when charging, normally relatively active simple substance.
Because structure-reinforced plate 1 is used for supporting whole utmost point group, so its shape can be identical with the shape of positive plate 3 or negative plate 4, but there is not leading-out terminal (lug), its size can be restricted to the size that is less than or equal to positive plate 3 or negative plate 4, the thickness of structure-reinforced plate 1 can but to be not limited to be matrix thickness greater than positive plate 3 or negative plate 4, and the surplus certain according to the Thickness Design of Soft Roll lithium ion battery, margin range is optional in 0.02mm～0.2mm scope.
When making the utmost point group of battery, a kind of production method is that utmost point group outmost turns is a single face positive plate 3, corresponding at this moment, structure-reinforced plate 1 is selected aluminium foil plate/aluminium net sheet, and its shape should be identical with the shape of positive plate 3 (difference only is not have the structure of leading-out terminal 6), size is less than or equal to positive plate 3 size, thickness are selected according to the battery size surplus.Structure is shown in accompanying drawing 1,2, at first with after positive plate 3, negative plate 4, the order stack of diaphragm 2 according to diaphragm/positive plate/diaphragm/negative plate/diaphragm/positive plate/diaphragm, the utmost point group that is added to again that structure-reinforced plate 1 is smooth, placed in the middle outer up and down, then with diaphragm 2 with utmost point group and the smooth tight winding of structure-reinforced plate after the internal layer stack or wrap, cling with adhesive tape 5 barrier film that will end up at last.
The production method of another kind of utmost point group is, utmost point group outmost turns pole piece is a negative plate, shown in accompanying drawing 3,4, structure-reinforced plate 1 is selected copper foil plate/copper mesh sheet, and its shape should identical with negative plate 4 shapes (difference only be not have and draws cross-talk), size is less than or equal negative plate 4 sizes and thickness is selected according to the battery size surplus.When making utmost point group, at first with after positive plate 3, negative plate 4, the order stack of diaphragm 2 according to diaphragm/negative plate/diaphragm/positive plate/diaphragm/negative plate/diaphragm, the utmost point group that is added to again that structure-reinforced plate 1 is smooth, placed in the middle outer up and down, then with diaphragm 2 with utmost point group and the smooth tight winding of reinforced boards after the internal layer stack or wrap, cling with adhesive tape 5 barrier film that will end up at last.
The production method of another kind of utmost point group is, structure-reinforced plate 1 is coated with the reinforcement negative pole flaggy of active material for single face, shown in accompanying drawing 4,5, its shape should be selected according to the battery size surplus with the thickness of the reinforcement Copper Foil of other size that negative plate 4 shapes are identical, size equals negative plate 4, employing.When making utmost point group, at first with after positive plate 3, negative plate 4, the order stack of diaphragm 2 according to barrier film/positive plate/barrier film/negative plate/barrier film/positive plate/barrier film, the utmost point group that is added to again that structure-reinforced plate 1 is smooth, placed in the middle outer up and down, with barrier film skin is strengthened then that the utmost point group of negative pole flaggy is smooth closely to be fastened or to wrap, clinged with adhesive tape 5 barrier film that will end up at last.The lug 6 of strengthening the negative pole flaggy is welded together with the lug of other negative pole.
When attention was made in above-described utmost point group, the upper and lower surface of structure-reinforced plate 1 was smooth, the edge does not have burr and be circular corner.The distortionless distortion of overall leveling, and need in advance structure-reinforced plate 1 to be carried out dust removal process.
After utmost point group completed, the follow-up manufacture craft of the structure-reinforced Soft Roll lithium ion battery that the utility model provides was same as the prior art.
In sum, compared with prior art, the utility model provides a kind of structure-reinforced Soft Roll lithium ion battery, improved the production method of battery utmost point group, promoted the structural strength stability of Soft Roll lithium ion battery by adding structure-reinforced plate, the utmost point group inner plane structure that has effectively solved the Soft Roll lithium ion battery is easy to generate the problem of local deformation, thereby has prevented that utmost point group internal layer barrier film or the very easily crooked injustice of pole piece from causing the dead band to analyse lithium, improved the reliability of battery.Copper foil plate/copper mesh sheet or aluminium foil plate/aluminium net sheet chemical stability in electrolyte is good, capacity of heat transmission is strong, processing and manufacturing is simple, cost is lower.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (9)
1. a structure-reinforced Soft Roll lithium ion battery comprises by positive plate, negative plate and the folded utmost point group that constitutes of diaphragm volume, it is characterized in that, also comprises being arranged on the outer field structure-reinforced plate of described utmost point group.
2. structure-reinforced lithium ion battery as claimed in claim 1 is characterized in that, the structure of described structure-reinforced plate is net sheet or paper tinsel plate.
3. structure-reinforced lithium ion battery as claimed in claim 1 is characterized in that, described structure-reinforced sheet material matter is aluminium or copper.
4. structure-reinforced lithium ion battery as claimed in claim 1 is characterized in that, the material of described structure-reinforced plate is the reinforcement pole piece that single face applies active material.
5. structure-reinforced lithium ion battery as claimed in claim 1 is characterized in that the size of described structure-reinforced plate is not more than the size of described positive plate or described negative plate.
6. structure-reinforced lithium ion battery as claimed in claim 1 is characterized in that the thickness of described structure-reinforced plate is not less than the thickness of described positive plate or described negative plate.
7. structure-reinforced lithium ion battery as claimed in claim 1 is characterized in that, the shape of described structure-reinforced plate is identical with described utmost point group shape.
8. structure-reinforced lithium ion battery as claimed in claim 7 is characterized in that, described utmost point group is zig-zag type lamination or bag type lamination.
9. structure-reinforced lithium ion battery as claimed in claim 8 is characterized in that, the shape of described utmost point group is rectangle, circle, banana-shaped or triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202798102U CN201838672U (en) | 2010-08-03 | 2010-08-03 | Soft-package lithium-ion battery with reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202798102U CN201838672U (en) | 2010-08-03 | 2010-08-03 | Soft-package lithium-ion battery with reinforcing structure |
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| Publication Number | Publication Date |
|---|---|
| CN201838672U true CN201838672U (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202798102U Expired - Lifetime CN201838672U (en) | 2010-08-03 | 2010-08-03 | Soft-package lithium-ion battery with reinforcing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972194A (en) * | 2017-04-21 | 2017-07-21 | 天津力神电池股份有限公司 | A kind of lithium ion battery |
-
2010
- 2010-08-03 CN CN2010202798102U patent/CN201838672U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972194A (en) * | 2017-04-21 | 2017-07-21 | 天津力神电池股份有限公司 | A kind of lithium ion battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |
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| CX01 | Expiry of patent term |