CN106887538A - Oil cooling battery bag - Google Patents
Oil cooling battery bag Download PDFInfo
- Publication number
- CN106887538A CN106887538A CN201710166485.5A CN201710166485A CN106887538A CN 106887538 A CN106887538 A CN 106887538A CN 201710166485 A CN201710166485 A CN 201710166485A CN 106887538 A CN106887538 A CN 106887538A
- Authority
- CN
- China
- Prior art keywords
- casing
- upper lid
- oil
- battery bag
- battery module
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000000295 complement effect Effects 0.000 claims abstract description 3
- 239000000945 filler Substances 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005303 weighing Methods 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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
-
- 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
- H01M50/147—Lids or covers
-
- 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- 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
- H01M50/183—Sealing members
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a kind of oil cooling battery bag, including upper lid, casing and battery module, the upper end of casing one end sets the functional interface chamber protruded outwardly, the bottom up in functional interface chamber inclines certain angle, the bottom in functional interface chamber is provided with positive output terminals, negative output terminals and at least one communication connection terminal, the both sides of casing are provided with fin, and body side is provided with least one oil-out on bottom position；Conducting strip is provided with the inside of upper lid, radiating ribs are provided with the outside of upper lid, at least one water-stop exhaust valve and at least one oil filler are provided with upper lid；Battery module is placed in casing, and built with oil-based liquid, oil-based liquid is totally submerged battery module to casing and oil-based liquid is in contact with the conducting strip on the inside of upper lid, and upper lid and casing complement one another and be sealed.Oil cooling battery bag of the invention, simple structure, novel, easy for installation, good heat dissipation effect of arranging.
Description
Technical field
The present invention relates to a kind of battery bag, more particularly to a kind of oil cooling battery bag.
Background technology
As the use of battery bag is more and more extensive, existing air-cooled battery bag, air-cooled runner is long, and interior flow field is difficult to
Weighing apparatus, causes the difference of cooling effect in different zones, there is that the battery temperature difference is big, be unable to water proof and dust proof, volume it is big (as long as fan
With air channel take volume), high cost the problems such as, can not fully meet market demands.For under some airtight conditions,
On pleasure-boat, yacht, automobile, because improper ventilation, such as radiated using air cooling way, the temperature of battery bag is difficult to lower,
The service life of battery bag is thus influenced whether, causes use cost higher.For the deficiency of above-mentioned air-cooled battery bag, water
The battery bag of the radiating modes such as cold, oil cooling is arisen at the historic moment, but structure difference, radiating effect is also just different, how to design battery
Pack arrangement causes that its radiating effect preferably, just turns into a current technical task.
The content of the invention
The present invention is intended to provide a kind of simple structure, oil cooling battery bag easy for installation, good heat dissipation effect.
The present invention is realized by following scheme：
A kind of oil cooling battery bag, including upper lid, casing and battery module, the upper end of described casing one end are set outwardly
The functional interface chamber of protrusion, the bottom up in the functional interface chamber inclines certain angle, and the bottom in the functional interface chamber sets
Positive output terminals, negative output terminals and at least one communication connection terminal are equipped with, the both sides of the casing are provided with radiating
Piece, the body side is provided with least one oil-out on bottom position；Conducting strip is provided with the inside of the upper lid,
Radiating ribs are provided with the outside of the upper lid, at least one water-stop exhaust valve and at least one oiling are provided with the upper lid
Mouthful；The battery module is placed in casing, the positive output terminals on the positive terminal connection casing of the battery module, electricity
Negative output terminals on the negative pole end connection casing of pond group module, temperature sampling line and voltage sample line in battery module
It is connected on communication connection terminal, built with oil-based liquid, oil-based liquid is totally submerged battery module and oiliness to the casing
Liquid is in contact with the conducting strip on the inside of upper lid, and the upper lid and casing complement one another and be sealed.
During actual fabrication, for each terminal and the functional interface chamber of insulating, typically can be in positive output terminals, cathode output end
Insulation sleeve is cased between functional interface chamber on son and at least one communication connection terminal and casing, using fluid sealant by each terminal
Bonded and insulation sleeve, insulation sleeve and functional interface chamber between and linked together.Fluid sealant typically uses high strength structural adhesion, for example
Epoxide-resin glue.During actual fabrication, battery module can be typically fixed with casing, can adopt and be screwed or other
Mode, can according to circumstances be selected.
To avoid that short circuit is produced between battery module and casing, set between the two ends of the battery module and casing
There is insulation board.
To reduce influence of the vibrations to battery module performance, the bottom of the battery module is provided with rubber and subtracts
Shake pad.
To ensure the sealing between casing and upper lid, sealing ring, ordinary circumstance are provided between the casing and upper lid
Under, it is to open up groove on casing top periphery, sealing ring is placed in groove.
To reduce the overall weight of casing in battery bag, while not influenceing the steadiness of battery bag, increase the entirety of casing
Intensity, is respectively provided with reinforcement inside and outside the bottom half, the casing corner is inwardly recessed, is set using concave inward structure from the bottom up
Meter.
It is the more preferable self-contained battery group module in casing, the casing inner bottom part is provided with several locating dowels.
Placed for convenience of the superposition between battery bag, the periphery on the casing top is provided with several projections.
Further, the inclined angle of bottom up in the functional interface chamber is 20~40 degree, and such design can subtract
The overall volume of baby battery bag, while also allowing for installing.
It is preferably to radiate, fast fixed support of casing, upper lid, battery pack mould etc. can be using the radiating effect such as iron, aluminium alloy
Really good material is made.
The cold battery bag of liquid of the invention, simple structure, novel, easy for installation, low cost of arranging, small volume, heat transfer effect
Rate is high, and the battery temperature difference is small, at the same it is waterproof dust-proof, the requirement used in adverse circumstances can be met.Devised on upper lid and blocked water
Air bleeding valve, can waterproof can keep casing external and internal pressure identical again, it is ensured that radiating effect.Battery module is completely submerged in oiliness
In liquid, casing both sides set fin, and upper outer side of lid sets radiating ribs, upper lid inner side and sets conducting strip, and these measures increase
The radiating effect of battery module, it is ensured that the performance of battery pack, is conducive to extending the service life of battery pack.Function connects
The bottom up in oral cavity inclines certain angle, it is ensured that be arranged on positive output terminals, the negative pole output of the bottom in functional interface chamber
Terminal and at least one communication downward-sloping certain angle of connection terminal, can so reduce the overall volume of battery bag, while
It is easily installed.
Brief description of the drawings
Fig. 1 is the overall structure diagram () of the oil cooling battery bag in embodiment 1；
Fig. 2 is the overall structure diagram (two) of the oil cooling battery bag in embodiment 1；
Fig. 3 is the overall structure diagram of the oil cooling battery bag (being free of upper lid) in embodiment 1；
Fig. 4 is the decomposing schematic representation of the oil cooling battery bag (being free of upper lid) in embodiment 1；
Fig. 5 is the structural representation of casing in embodiment 1；
Fig. 6 (a) is the front schematic view of upper lid in embodiment 1；
Fig. 6 (b) is the reverse side schematic diagram of upper lid in embodiment 1.
Specific embodiment
The invention will be further described with reference to embodiments, but the invention is not limited in the statement of embodiment.
Embodiment 1
A kind of oil cooling battery bag, as shown in Figure 1 and Figure 2, including upper lid 1, casing 2 and battery module 3, as shown in figure 5,
The upper end of the one end of casing 2 sets the functional interface chamber 4 protruded outwardly, and the bottom up in functional interface chamber 4 inclines 30 degree, function
The bottom of hub cavity 4 is provided with positive output terminals 5, negative output terminals 6 and communication connection terminal 7, in positive output terminals
5th, insulation sleeve is cased between the functional interface chamber 4 on negative output terminals 6 and communication connection terminal 7 and casing 2 (not shown in figure
Insulation sleeve), bonding between each terminal and insulation sleeve, insulation sleeve and functional interface chamber is linked together using epoxide-resin glue,
The both sides of casing 2 are provided with fin 18, and the side of casing 2 is provided with an oil-out 8, the bottom of casing 2 on bottom position
Inside and outside to be respectively provided with reinforcement 17, reinforcement 17 is in grid structures, and 2 four jiaos of casing is inwardly recessed from the bottom up, the inner bottom part of casing 2
Locating dowel 9 is provided with, the periphery on the top of casing 2 is provided with four projections 19, and the top periphery of casing 2 opens up groove 20；Such as
Shown in Fig. 6 (a), Fig. 6 (b), the inner side of upper lid 1 is provided with conducting strip 10, and the outside of upper lid 1 is provided with radiating ribs 11, on upper lid 1
It is provided with a water-stop exhaust valve 12 and an oil filler 13；As shown in Figure 3, Figure 4, the bottom of battery module 3 is provided with rubber
Glue beam 14, battery module 3 is screwed in casing 2, is set between the two ends of battery module 3 and casing 2
There are insulation board 15, the positive output terminals 4 on the positive terminal connection casing 2 of battery module 3, the negative pole end of battery module 3
Negative output terminals 5 on connection casing 2, temperature sampling line and voltage sample line in battery module are connected to communication connection
On terminal (temperature sampling line, voltage sample line and its annexation with communication connection terminal not shown in figure), casing 2 is built-in
There is an oil-based liquid (oil-based liquid is not shown in figure), oil-based liquid is totally submerged battery module 3 and in oil-based liquid and upper lid 1
The conducting strip 10 of side is in contact, and upper lid 1 and casing 2 are complemented one another and be sealed, and sealing is provided between casing 2 and upper lid 1
Circle 16, sealing ring 16 is placed in the groove 20 of casing 2.Casing 2, upper lid 1, the fixation of battery pack mould fast 3 in the present embodiment
Support is made of ferrous material.
Embodiment 2
A kind of oil cooling battery bag, its structure is similar with oil cooling battery bag in embodiment 1, and its difference is：Institute
The inclined angle of bottom up in functional interface chamber is stated for 20 degree, the communication connection terminal quantity set on casing is two.
Embodiment 3
A kind of oil cooling battery bag, its structure is similar with oil cooling battery bag in embodiment 1, and its difference is：Institute
The inclined angle of bottom up for stating functional interface chamber is 40 degree.
Claims (8)
1. a kind of oil cooling battery bag, including upper lid, casing and battery module, it is characterised in that：The upper end of described casing one end
Portion sets the functional interface chamber protruded outwardly, and the bottom up in the functional interface chamber inclines certain angle, the functional interface
The bottom in chamber is provided with positive output terminals, negative output terminals and at least one communication connection terminal, the both sides of the casing
Fin is provided with, the body side is provided with least one oil-out on bottom position；Set on the inside of the upper lid
Conducting strip is equipped with, radiating ribs are provided with the outside of the upper lid, at least one water-stop exhaust valve and extremely is provided with the upper lid
A few oil filler；The battery module is placed in casing, the positive pole on the positive terminal connection casing of the battery module
Lead-out terminal, the negative output terminals on the negative pole end connection casing of battery module, the temperature sampling line in battery module
It is connected on communication connection terminal with voltage sample line, the casing is totally submerged battery built with oil-based liquid, oil-based liquid
Organize module and oil-based liquid is in contact with the conducting strip on the inside of upper lid, the upper lid and casing complement one another and be sealed.
2. the cold battery bag of liquid as claimed in claim 1, it is characterised in that：Set between the two ends of the battery module and casing
It is equipped with insulation board.
3. the cold battery bag of liquid as claimed in claim 2, it is characterised in that：The bottom of the battery module is provided with rubber and subtracts
Shake pad.
4. the cold battery bag of liquid as claimed in claim 1, it is characterised in that：Sealing ring is provided between the casing and upper lid.
5. oil cooling battery bag as claimed in claim 1, it is characterised in that：Reinforcement, institute are respectively provided with inside and outside the bottom half
Casing corner is stated to be inwardly recessed from the bottom up.
6. oil cooling battery bag as claimed in claim 5, it is characterised in that：The casing inner bottom part is provided with several positioning
Post.
7. the oil cooling battery bag as described in claim 1~7 is any, it is characterised in that：The periphery on the casing top is provided with
Several projections.
8. the cold battery bag of liquid as described in claim 1~7 is any, it is characterised in that：The bottom up in the functional interface chamber
Inclined angle is 20~40 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166485.5A CN106887538B (en) | 2017-03-20 | 2017-03-20 | Oil-cooled battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166485.5A CN106887538B (en) | 2017-03-20 | 2017-03-20 | Oil-cooled battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106887538A true CN106887538A (en) | 2017-06-23 |
| CN106887538B CN106887538B (en) | 2020-01-03 |
Family
ID=59180826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710166485.5A Active CN106887538B (en) | 2017-03-20 | 2017-03-20 | Oil-cooled battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106887538B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022107765A1 (en) | 2022-04-01 | 2023-10-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Device for providing a sealed electrical connection area and assembly method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001060466A (en) * | 1999-08-23 | 2001-03-06 | Japan Storage Battery Co Ltd | Set battery |
| CN101542825A (en) * | 2007-02-01 | 2009-09-23 | 丰田自动车株式会社 | Power supply device |
| CN201804919U (en) * | 2010-08-03 | 2011-04-20 | 唐菊香 | Closed power battery pack module |
| CN102751545A (en) * | 2011-04-20 | 2012-10-24 | 三菱自动车工业株式会社 | Battery unit |
| JP2014060088A (en) * | 2012-09-19 | 2014-04-03 | Toshiba Corp | Secondary battery device and secondary battery system |
| CN103943912A (en) * | 2008-11-12 | 2014-07-23 | 江森自控帅福得先进能源动力系统有限责任公司 | Battery system with heat exchanger |
| CN104795606A (en) * | 2014-01-21 | 2015-07-22 | 微宏动力系统（湖州）有限公司 | Liquid-cooled battery pack system |
| CN106450085A (en) * | 2016-10-10 | 2017-02-22 | 苏州协鑫集成储能科技有限公司 | Battery module and preparation method therefor, and battery assembly |
-
2017
- 2017-03-20 CN CN201710166485.5A patent/CN106887538B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001060466A (en) * | 1999-08-23 | 2001-03-06 | Japan Storage Battery Co Ltd | Set battery |
| CN101542825A (en) * | 2007-02-01 | 2009-09-23 | 丰田自动车株式会社 | Power supply device |
| CN103943912A (en) * | 2008-11-12 | 2014-07-23 | 江森自控帅福得先进能源动力系统有限责任公司 | Battery system with heat exchanger |
| CN201804919U (en) * | 2010-08-03 | 2011-04-20 | 唐菊香 | Closed power battery pack module |
| CN102751545A (en) * | 2011-04-20 | 2012-10-24 | 三菱自动车工业株式会社 | Battery unit |
| JP2014060088A (en) * | 2012-09-19 | 2014-04-03 | Toshiba Corp | Secondary battery device and secondary battery system |
| CN104795606A (en) * | 2014-01-21 | 2015-07-22 | 微宏动力系统（湖州）有限公司 | Liquid-cooled battery pack system |
| CN106450085A (en) * | 2016-10-10 | 2017-02-22 | 苏州协鑫集成储能科技有限公司 | Battery module and preparation method therefor, and battery assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022107765A1 (en) | 2022-04-01 | 2023-10-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Device for providing a sealed electrical connection area and assembly method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106887538B (en) | 2020-01-03 |
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Effective date of registration: 20210721 Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province Patentee after: NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS Address before: 410205 No. 348, west slope, Tongzi high tech Development Zone, Hunan, Changsha Patentee before: HUNAN COPOWER EV BATTERY Co.,Ltd. |