CN108539061A - A kind of soft-package battery - Google Patents
A kind of soft-package battery Download PDFInfo
- Publication number
- CN108539061A CN108539061A CN201710127405.5A CN201710127405A CN108539061A CN 108539061 A CN108539061 A CN 108539061A CN 201710127405 A CN201710127405 A CN 201710127405A CN 108539061 A CN108539061 A CN 108539061A
- Authority
- CN
- China
- Prior art keywords
- soft
- protective construction
- package battery
- roll shell
- battery according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 claims abstract description 48
- 230000001681 protective effect Effects 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000010410 layer Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 229910052787 antimony Inorganic materials 0.000 claims 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims 1
- 239000003575 carbonaceous material Substances 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 238000007598 dipping method Methods 0.000 claims 1
- 239000007772 electrode material Substances 0.000 claims 1
- 229910052732 germanium Inorganic materials 0.000 claims 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 239000011733 molybdenum Substances 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 229910052718 tin Inorganic materials 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 9
- 239000002985 plastic film Substances 0.000 abstract description 9
- 229920006255 plastic film Polymers 0.000 abstract description 9
- 230000006378 damage Effects 0.000 abstract description 5
- 238000005538 encapsulation Methods 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 238000005253 cladding Methods 0.000 description 6
- 238000002955 isolation Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A kind of soft-package battery, including battery core and Soft Roll shell, battery core include positive plate, negative plate and diaphragm, it is characterised in that the encapsulation port of Soft Roll shell is provided with protective construction.Soft Roll shell is aluminum plastic film, its sealing part is more sharp after packaging, and when being contacted with other extraneous things, there are certain destructions, setting protective construction to coat sealing part and protect, can improve the safety of Soft Roll shell but also preferably be used for other operations.
Description
(1) technical field
The present invention relates to a kind of battery, especially a kind of soft-package battery.
(2) background technology
In the prior art, being isolated between anode collector and aluminum plastic film is realized generally by isolation film.Due to city
Requirement of the field to battery energy density is higher and higher, and the thickness of isolation film, the polypropylene layer thickness of aluminum plastic film, anode collector are thick
Degree is also with thinning.On the one hand, thinning isolation film is decreased with polypropylene layer puncture-resistant intensity, on the other hand, due to lithium
Galvanic anode collector is copper foil, and the limitation of process conditions in the related technology, the end face of copper foil can have burr, maximum conditions
Under may cause anode end face burr pierce through isolation film occur with the case where aluminum plastic film, and it is thinning after anode collector winding
Both sides corner can be more sharp when forming battery, therefore more exacerbates the polypropylene that anode collector pierces through isolation film and aluminum plastic film
The possibility of layer.
The polypropylene layer of isolation film and aluminum plastic film can lead to leakage after being pierced, more serious to lead to anode and aluminum plastic film
Aluminium foil layer contact conducting, occur electrochemical reaction cause the position generate corrosion phenomenon, also result in leakage and corrosion.Soft Roll
Shell is aluminum plastic film, its sealing part is more sharp after packaging, and when being contacted with other extraneous things, there are certain destructions.
Therefore, a kind of novel soft-package battery of research has been to be badly in need of.
(3) invention content
The present invention provides a kind of battery for the safety that can improve Soft Roll shell in view of the above shortcomings of the prior art.
Used technical solution is the present invention in order to solve the above problem：Outside a kind of soft-package battery, including battery core and Soft Roll
Shell, battery core include positive plate, negative plate and diaphragm, it is characterised in that the encapsulation port of the Soft Roll shell is provided with protective construction.
Since pole piece edge does not ensure that smoothly in technique processing and encapsulation process, limited by technical matters condition, pole piece
Edge there is burr, using protective construction by pole piece edge coat insulate, reduce pole piece edge in dynamic environment with every
The destruction frottage of film also protects pole piece that can preferably carry out other technological operations.Soft Roll shell is aluminum plastic film, is being sealed
Its sealing part is more sharp after dress, and when being contacted with other extraneous things, there are certain destructions, setting protective construction to seal
Protection is coated at mouthful, can be improved the safety of Soft Roll shell but also is preferably used for other operations.
The present invention is further characterized in that the protective construction is insulated paint or insulating cement or silica gel.Insulated paint protective construction
Technical process is simple and convenient, can be with different construction technologies (as brushed, impregnating or roll in conjunction with the painting tool of dimension
Brush) be coated in pole piece edge or/and Soft Roll shell and seal surrounded surface, eventually form adherency securely, there is some strength, is continuous
Solid film.Solid film coats pole piece edge or/and Soft Roll shell seals surrounded surface, with pole piece or/and Soft Roll shell
A completely entirety is formed, entire battery is effectively protected.Insulating cement protective construction or silica gel protective construction can be set
It sets size corresponding with pole piece protective position and is fitted in pole piece edge or/and Soft Roll shell sealing surrounded surface, reach same
Protect insulation effect.
The present invention is further characterized in that the lug periphery of positive plate or negative plate is provided with protective construction.Positive/negative plate is distinguished
Be using aluminium foil and copper foil as collector, in technique process, pole piece surrounding can occur in various degree burr or other
Sharp edge, the setting of protective construction, which can effectively protect pole piece surrounding, insulate.
The present invention is further characterized in that the protective construction is covered in the surrounding lateral cross section of pole piece.(pole piece surrounding is lateral
Section and membrane contacts, protective construction are covered in the friction that can be effectively reduced on surrounding cross section between them, can guarantee battery
The work of normal safety and the service life for extending battery.
The present invention is further characterized in that the end of the end wall surface or package pole piece in pole piece is arranged in protective construction.Pole piece end
Portion's wall surface or end and membrane contacts, protective construction are covered in rubbing between capable of effectively reducing them on end wall surface or end
It wipes, can guarantee the work of the normal safety of battery and extends the service life of battery.
The present invention is further characterized in that protective construction by brushing or impregnating or round brush mode is arranged in pole piece or/and lug
Edge.The surrounding cladding protective construction of lug can be effectively protected lug so that lug insulate with external contact face, prolongs
The service life of long battery, and protective construction, by brushing or impregnating or round brush mode is arranged, technique is simpler.
The present invention be further characterized in that protective construction by brush or impregnate or round brush mode be arranged Soft Roll shell seal
Place.Sharp sharp sealing side can be left in sealing part after the encapsulation of Soft Roll shell, it is effective in sealing part setting protective construction energy
Improve the safety that battery uses so that the destruction shadow placed without by sealing side is physically easier to perform and be arranged between battery
It rings, extends the service life of battery, and protective construction, by brushing or impregnating or round brush mode is arranged, technique is simpler.
The present invention is further characterized in that the surrounding in pole piece or/and lug is arranged by extrusion or coverage mode for protective construction
Edge.The surrounding cladding protective construction of lug can be effectively protected lug so that lug insulate with external contact face, extends battery
Service life, and protective construction, by squeezing out or coverage mode is arranged, technique is simpler.
The present invention is further characterized in that the elongation percentage of the protective construction is 0.2%~0.8%.Protective construction, which has, to be stretched
Physical property, environmental change can be adapted to very well and be not damaged, advantageously to the protection of electrode slice.
The present invention is further characterized in that the thickness of the coating is 10~200 μm.Coating layer thickness can be by coating ability
Limitation, to prevent coating from splitting and peeled off from collector in winding, while ensureing the energy for reaching battery, coat
Thickness there is preferably effect within this range.
(4) it illustrates
Fig. 1 is the structure of battery.
Fig. 2 is the schematic diagram of the embodiment of the present invention 1.
Fig. 3 is the schematic diagram of the embodiment of the present invention 2.
Fig. 4 is the schematic diagram of the embodiment of the present invention 3.
In figure, 1, battery, 2, Soft Roll shell, 3, positive plate, 4, negative plate, 5, diaphragm, 6, protective construction.
(5) specific implementation mode
Invention is further described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of battery, including battery core 1 and Soft Roll shell 2, battery core 1 include positive plate 3, negative plate 4 and every
Film 5, multiple battery cores 1 form lithium battery, and diaphragm 5 is separated positive plate 3, the insulation of negative plate 4 with Z-shaped winding method, positive and negative anodes
On piece is provided with lug.
The present invention is further characterized in that the pole piece edge and 2 surrounding sealing part edge of Soft Roll shell are provided with protection structure
Make 6.As shown in Fig. 2, battery 1 include positive plate 3, negative plate 4 and diaphragm 5, diaphragm 5 with Z-shaped winding method by positive plate 3,
The insulation of negative plate 4 separates, it is characterised in that positive plate 3, negative plate 4 edge wall surface be provided with protective construction 2, protect structure
It is one layer of solid film to make 2, coats the burr edge that the metal layer on pole piece is formed.Its sealing part side after Soft Roll shell 2 encapsulates
Edge is provided with protective construction 6, cladding sealing side.
The present invention is further characterized in that on the edge of the positive/negative plate of the battery 1 and 2 surrounding sealing part side of Soft Roll shell
Edge is provided with protective construction 6.As shown in figure 3, battery 1 includes positive plate 3, negative plate 4 and diaphragm 5, diaphragm 5 is wound with Z-shaped
Mode by positive plate 3, negative plate 4 insulation separates, it is characterised in that positive plate 3, negative plate 4 edge wall surface be provided with it is anti-
Shield construction 2, protective construction 2 is one layer of solid film, coats the burr that metal layer and positive and negative pole material coating on pole piece are formed
Edge.Its sealing part edge is provided with protective construction 6, cladding sealing side after Soft Roll shell 2 encapsulates.
The present invention, which is further characterized in that on the edge of the positive/negative plate of the battery 1, is provided with protective construction 2.Such as Fig. 4 institutes
Show, battery 1 includes positive plate 3, negative plate 4 and diaphragm 5, and diaphragm 5 is insulated positive plate 3, negative plate 4 with Z-shaped winding method
Separate, it is characterised in that positive plate 3, negative plate 4 edge wall surface be provided with protective construction 2, protective construction 2 is one layer solid
State film, the entire edge of cladding pole piece.Its sealing part edge is provided with protective construction 6, cladding sealing after Soft Roll shell 2 encapsulates
Side.
The present invention is further characterized in that the elongation percentage of the protective construction is 0.2%~0.8%.
Claims (10)
1. a kind of soft-package battery, including battery core (1) and Soft Roll shell (2), battery core (1) include positive plate (3), negative plate (4) and
Diaphragm (5), it is characterised in that described Soft Roll shell (2) edge is provided with protective construction (6).
2. soft-package battery according to claim 1, which is characterized in that the protective construction (6) is covered in Soft Roll shell (2)
Surrounding sealing part lateral cross section.
3. soft-package battery according to claim 2, which is characterized in that the surrounding of positive plate (3) or/and negative plate (4)
Edge is provided with protective construction (6).
4. soft-package battery according to claim 3, which is characterized in that the protective construction (6) be covered in positive plate (3) or
The metal layer lateral cross section of negative plate (4).
5. soft-package battery according to claim 4, which is characterized in that protective construction (6) is arranged in positive plate (3) or cathode
The metal layer and electrode material coating layer marginal end portion wall surface of piece (4).
6. the soft-package battery according to any claim in claim 1 to 5, which is characterized in that positive plate (3) or/and
The lug periphery of negative plate (4) is provided with protective construction (6).
7. the soft-package battery according to any claim in claim 1 to 5, which is characterized in that the protective construction (6)
For insulated paint or insulating cement or silica gel.
8. the soft-package battery according to any claim in claim 1 to 5, which is characterized in that the positive plate (3)
Positive electrode includes any one metal simple-substance, alloy or compound in silicon, germanium, tin and copper.
9. soft-package battery according to claim 8, which is characterized in that the positive electrode of the positive plate (3) includes being selected from
At least one of nickel, iron, zinc, cobalt, chromium, manganese, molybdenum and antimony metal material and partially or completely coat at least one gold
Belong to the carbon material of material.
10. the soft-package battery according to any claim in claim 1 to 5, which is characterized in that protective construction (6) is logical
It crosses brushing or dipping or round brush mode is arranged in the edge of Soft Roll shell (2), pole piece or/and lug；Or protective construction
(6) it is arranged in the edge of Soft Roll shell (2), pole piece or/and lug by extrusion or coverage mode；Or the protection structure
The elongation percentage for making (6) is 0.2%~0.8%；Or the thickness of the pole piece is 60~100 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127405.5A CN108539061A (en) | 2017-03-06 | 2017-03-06 | A kind of soft-package battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127405.5A CN108539061A (en) | 2017-03-06 | 2017-03-06 | A kind of soft-package battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108539061A true CN108539061A (en) | 2018-09-14 |
Family
ID=63489630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710127405.5A Pending CN108539061A (en) | 2017-03-06 | 2017-03-06 | A kind of soft-package battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108539061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764717A (en) * | 2021-09-01 | 2021-12-07 | 天津市捷威动力工业有限公司 | Method for improving durability of soft package battery, soft package battery and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364932Y (en) * | 2009-02-20 | 2009-12-16 | 杨明 | Electric core of lithium ion battery and lithium ion battery using same |
| CN102623746A (en) * | 2012-03-26 | 2012-08-01 | 宁德新能源科技有限公司 | Flexibly-packaged lithium ion battery |
| CN202817117U (en) * | 2012-10-16 | 2013-03-20 | 浙江瓦力新能源科技有限公司 | Lithium manganese oxide (LMO) polymer battery |
| CN203026604U (en) * | 2012-10-31 | 2013-06-26 | 东莞市金源电池科技有限公司 | Cell structure of soft-package lithium battery |
| CN205542915U (en) * | 2016-01-29 | 2016-08-31 | 广东精进能源有限公司 | Soft packet safe lithium cell |
-
2017
- 2017-03-06 CN CN201710127405.5A patent/CN108539061A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364932Y (en) * | 2009-02-20 | 2009-12-16 | 杨明 | Electric core of lithium ion battery and lithium ion battery using same |
| CN102623746A (en) * | 2012-03-26 | 2012-08-01 | 宁德新能源科技有限公司 | Flexibly-packaged lithium ion battery |
| CN202817117U (en) * | 2012-10-16 | 2013-03-20 | 浙江瓦力新能源科技有限公司 | Lithium manganese oxide (LMO) polymer battery |
| CN203026604U (en) * | 2012-10-31 | 2013-06-26 | 东莞市金源电池科技有限公司 | Cell structure of soft-package lithium battery |
| CN205542915U (en) * | 2016-01-29 | 2016-08-31 | 广东精进能源有限公司 | Soft packet safe lithium cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764717A (en) * | 2021-09-01 | 2021-12-07 | 天津市捷威动力工业有限公司 | Method for improving durability of soft package battery, soft package battery and vehicle |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20210121 Address after: Room 702, superstar entrepreneurial base, No.8 Lujing Road, Changsha high tech Development Zone, Changsha City, Hunan Province, 410205 Applicant after: Changsha Juneng new energy Co.,Ltd. Address before: Room 706, superstar entrepreneurial base, No.8 Lujing Road, high tech Development Zone, Changsha City, Hunan Province, 410205 Applicant before: HUNAN MIAOSHENG AUTOMOBILE POWER Co.,Ltd. |