CN109130824A - A kind of new-energy automobile power battery safety system - Google Patents
A kind of new-energy automobile power battery safety system Download PDFInfo
- Publication number
- CN109130824A CN109130824A CN201811097714.3A CN201811097714A CN109130824A CN 109130824 A CN109130824 A CN 109130824A CN 201811097714 A CN201811097714 A CN 201811097714A CN 109130824 A CN109130824 A CN 109130824A
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- Prior art keywords
- welded
- fixed plate
- hole
- energy automobile
- safety system
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- 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.)
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Links
- 239000000428 dust Substances 0.000 description 5
- 230000005779 cell damage Effects 0.000 description 4
- 208000037887 cell injury Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention proposes a kind of new-energy automobile power battery safety system, including device noumenon, described device ontology two sides have been connected by screw to rubber block, the rubber block other end has movable plate by being glued, the movable plate quantity is two, movable plate side both sides are welded with sliding bar, described sliding bar one end passes through device noumenon, and third spring is welded on the outside of device noumenon, the third spring other end is welded on movable plate side, and third spring is set on the outside of sliding bar, in summary, the service life of battery can be improved in this device, it is shockproof, shatter-resistant ability is strong, improve the security performance in electrical vehicular power source, increase the service life of electric vehicle, improve the cost performance of electric vehicle.
Description
Technical field
The present invention relates to battery protecting apparatus technical fields, and in particular to a kind of new-energy automobile power battery safeguard protection
System.
Background technique
Batteries of electric automobile divides two major classes, battery and fuel cell.Battery is suitable for pure electric automobile, including plumbic acid
Battery, nickel-metal hydride battery, sodium-sulphur battery, serondary lithium battery, air cell.
Existing batteries of electric automobile does not have an anticollision device, collision-prevention device, and existing batteries of electric automobile also without dust-proof, waterproof at
Reason, when dust and water enter inside battery, causes cell damage, and battery is easy to be short-circuited, and spontaneous combustion is caused when serious.
Summary of the invention
In view of the above-mentioned problems, the present invention proposes a kind of new-energy automobile power battery safety system, lived by being equipped with
The components composed structures such as movable plate, sliding bar, third spring, rotating bar, sliding shoe, the 5th fixed plate, this structure effective protection
The safety of battery under impact events, the invention pass through the components groups such as the first inclined plate, the second inclined plate, gutter channel, first connecting rod
At decoupling stock, this structure can effectively prevent external rain leakage into inside device noumenon, cause cell damage, the invention passes through
The components composed structures such as Air Filter, the first conical gear, the second conical gear, screw rod, guide rod, this structure can guarantee device
Inside will not enter dust impurity, improve the service life of battery, in conclusion the use longevity of battery can be improved in this device
Life, shockproof, shatter-resistant ability is strong, improves the security performance in electrical vehicular power source, increases the service life of electric vehicle, improves
The cost performance of electric vehicle.
The present invention proposes a kind of new-energy automobile power battery safety system, including device noumenon, described device sheet
Body two sides have been connected by screw to rubber block, and the rubber block other end has movable plate by being glued, and the movable plate quantity is
Two, movable plate side both sides are welded with sliding bar, and described sliding bar one end passes through device noumenon, and outside device noumenon
Side is welded with third spring, and the third spring other end is welded on movable plate side, and third spring is set in outside sliding bar
Side, described sliding bar one end passes through device noumenon side, and sliding bar one end is connected with rotating bar, the rotation by rotary shaft
The bar other end is connected with sliding shoe by rotary shaft, and described device inner body wall side is welded with the 5th fixed plate, and the described 5th
Fixed plate side offers T-type sliding slot, and sliding shoe is connected with inside T-type sliding slot, and the 5th fixed plate quantity is two.
Further improvement lies in that: described device inner body wall two sides are welded with the first mandril, the first mandril outside
It is arranged with first sleeve, first sleeve inner wall side is welded with second spring, and the second spring other end is welded on
One mandril one end, the first sleeve side are welded with rubber slab.
Further improvement lies in that: battery, the battery size are as follows: 3-EFV-200 are placed with inside device noumenon.
Further improvement lies in that: first connecting rod, first connecting rod one end welding are welded at the top of the 5th fixed plate
There is the first inclined plate, described device ontology two sides offer first through hole, it is placed with the second inclined plate in first through hole, described second
Inclined plate side both sides offer the second through-hole, offer third through-hole and four-way at the top of the first connecting rod and the first inclined plate
Hole, and third through-hole, fourth hole inner wall are carved with screw thread.
Further improvement lies in that: the 5th fixed plate side is welded with first shell, first shell inner wall bottom
It is welded with kelly, the kelly other end is provided with the second conical gear, welds at the second conical gear top center axis
There is screwed pipe, screw rod has been connected through a screw thread inside the screwed pipe, described screw rod one end passes through the second conical gear, and the second circular cone
Gear both ends both pass through first shell.
Further improvement lies in that: it is welded with guide rod at the top of the first shell, the screw tip is welded with sliding panel, and
Guide rod passes through sliding panel.
Further improvement lies in that: the first shell side offers fifth hole, and fifth hole inner wall offer it is recessed
Slot is connected with second connecting rod in groove, and described second connecting rod one end is welded with the first conical gear, and the first conical gear and
The intermeshing of two conical gears, the second connecting rod other end are welded with knob.
Further improvement lies in that: gutter channel is offered at the top of second inclined plate, the flowing water slot number is eight, described
Device noumenon inner wall side is welded with third fixed plate, and third fixed plate side is welded with the first depending post, outside the first depending post
Side is arranged with rotation axis, and being glued on the outside of rotation axis has Air Filter, and described Air Filter one end passes through the 5th fixed plate, and Air Filter one
End is welded with the 4th fixed plate, and the 4th fixed plate one end is welded with the second fixed plate.
Beneficial effects of the present invention: the present invention by be equipped with movable plate, sliding bar, third spring, rotating bar, sliding shoe,
The components composed structures such as the 5th fixed plate, the safety of this structure effective protection battery under impact events, the invention pass through the
The components such as one inclined plate, the second inclined plate, gutter channel, first connecting rod composition decoupling stock, this structure can effectively prevent external rainwater
It leaks into inside device noumenon, causes cell damage, the invention passes through Air Filter, the first conical gear, the second conical gear, spiral shell
The components composed structure such as bar, guide rod, this structure can guarantee that making for battery will not be improved into dust impurity inside device
With the service life, in conclusion this device can be improved, the service life of battery, shockproof, shatter-resistant ability is strong, improves electrical vehicular power
The security performance in source increases the service life of electric vehicle, improves the cost performance of electric vehicle.
Detailed description of the invention
Fig. 1 is whole structural schematic diagram of the invention；
Fig. 2 is left view structural representation of the invention；
Fig. 3 is enlarged structure schematic diagram at A of the invention；
Fig. 4 is 17 overlooking structure diagram of the second inclined plate of the invention.
In figure: 1- device noumenon, the first mandril of 2-, 3- battery, 4- first sleeve, 5- rotating bar, 6- movable plate, 7- first
Spring, 8- second spring, 9- rubber slab, 10- third spring, the first fixed plate of 11-, 12- sliding bar, 13- rubber block, the top 14-
Lid, the first inclined plate of 15-, the second fixed plate of 16-, the second inclined plate of 17-, 18- first connecting rod, 19- rotation axis, 20- third fixed plate,
21- Air Filter, the 4th fixed plate of 22-, 23- gutter channel, 24- knob, 25- second connecting rod, the first conical gear of 26-, 27- card
Bar, the second conical gear of 28-, 29- screw rod, 30- sliding panel, 31- guide rod, 32- screwed pipe, 33- sliding shoe, the 5th fixed plate of 34-,
35- first shell.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is further described below in conjunction with embodiment, the present embodiment
For explaining only the invention, it is not intended to limit the scope of the present invention..
A kind of new-energy automobile power battery safety system according to shown in Fig. 1-4, including device noumenon 1, device
1 two sides of ontology have been connected by screw to rubber block 13, and 13 other end of rubber block has movable plate 6 by being glued, and 6 quantity of movable plate is
Two, 6 side both sides of movable plate are welded with sliding bar 12, and 12 one end of sliding bar passes through device noumenon 1, and outside device noumenon 1
Side is welded with third spring 10, and 10 other end of third spring is welded on 6 side of movable plate, and third spring 10 is set in sliding bar
12 outsides, 12 one end of sliding bar passes through 1 side of device noumenon, and 12 one end of sliding bar is connected with rotating bar 5 by rotary shaft, turns
5 other end of lever is connected with sliding shoe 33 by rotary shaft, and 1 inner wall side of device noumenon is welded with the 5th fixed plate 34, and the 5th
34 side of fixed plate offers T-type sliding slot, and sliding shoe 33 is connected with inside T-type sliding slot, and 34 quantity of the 5th fixed plate is two.
In the present embodiment: 1 inner wall two sides of device noumenon are welded with the first mandril 2, and 2 outer sheath of the first mandril is equipped with the
Sleeve 4,4 inner wall side of first sleeve are welded with second spring 8, and 8 other end of second spring is welded on 2 one end of the first mandril,
4 side of first sleeve is welded with rubber slab 9.
In the present embodiment: battery 3,3 model of battery are as follows: 3-EFV-200 are placed with inside device noumenon 1.
In the present embodiment: first connecting rod 18 is welded at the top of the 5th fixed plate 34,18 one end of first connecting rod is welded with
One inclined plate 15,1 two sides of device noumenon offer first through hole, and the second inclined plate 17, the second inclined plate 17 are placed in first through hole
Side both sides offer the second through-hole, offer third through-hole and fourth hole at the top of first connecting rod 18 and the first inclined plate 15,
And third through-hole, fourth hole inner wall are carved with screw thread.
In the present embodiment: 34 side of the 5th fixed plate is welded with first shell 35, the welding of 35 inner wall bottom of first shell
There is kelly 27,27 other end of kelly is provided with the second conical gear 28, is welded with spiral shell at 28 top center axis of the second conical gear
Pipe 32, screw rod 29 has been connected through a screw thread inside screwed pipe 32, and 29 one end of screw rod passes through the second conical gear 28, and the second circular cone tooth
It takes turns 28 both ends and both passes through first shell 35.
In the present embodiment: being welded with guide rod 31 at the top of first shell 35, sliding panel 30 is welded at the top of screw rod 29, and lead
31 one end of bar passes through sliding panel 30, and guide rod 31 guarantees that screw rod 29 in slide downward, will not be rotated together with screwed pipe 32.
In the present embodiment: 35 side of first shell offers fifth hole, and fifth hole inner wall open up it is fluted, it is recessed
Second connecting rod 25 is connected in slot, 25 one end of second connecting rod is welded with the first conical gear 26, and the first conical gear 26 and
The intermeshing of two conical gears 28,25 other end of second connecting rod are welded with knob 24, and second connecting rod 25 turns inside fifth hole
It is dynamic, and 25 position of second connecting rod will not change.
In the present embodiment: gutter channel 23 is offered at the top of the second inclined plate 17,23 quantity of gutter channel is eight, device noumenon
1 inner wall side is welded with third fixed plate 20, and 20 side of third fixed plate is welded with the first depending post, the first depending post outer sheath
Equipped with rotation axis 19, being glued on the outside of rotation axis 19 has Air Filter 21, and 21 one end of Air Filter passes through the 5th fixed plate 34, and Air Filter
21 one end are welded with the 4th fixed plate 22, and 22 one end of the 4th fixed plate is welded with the second fixed plate 16, and Air Filter 23 prevents ash
Dirt enters inside battery, improves the service life of battery.
Beneficial effects of the present invention:
1, the invention passes through movable plate 6, sliding bar 12, third spring 10, rotating bar 8, sliding shoe 33, the 5th fixed plate 34
Equal components composed structure, the safety of this structure effective protection battery under impact events.
2, the invention passes through the composition decoupling of the components such as the first inclined plate 15, the second inclined plate 17, gutter channel 23, first connecting rod 18
Stock, this structure can effectively prevent external rain leakage into inside device noumenon 1, cause cell damage.
3, the invention passes through Air Filter 21, the first conical gear 16, the second conical gear 28, screw rod 29, guide rod 31 etc. zero
Component composed structure, this structure can guarantee that the service life of battery will not be improved into dust impurity inside device.
4, in conclusion this device can be improved, the service life of battery, shockproof, shatter-resistant ability is strong, improves electric vehicle
The security performance of power source increases the service life of electric vehicle, improves the cost performance of electric vehicle.
Working principle: when external force touches electric vehicle, movable plate 6 is driven to move, movable plate 6 drives sliding bar 12 to transport
It is dynamic, and movable plate 6 makes rubber block 13 deformation occurs, due to the effect of rubber block 13, slows down part of impact force, 12 band of sliding bar
Dynamic third spring 10 is in compressive state, and sliding bar 12 drives rotating bar 8 to move, and rotating bar 8 moves the first spring 7 and is in compression
State, by rubber block 13, the first spring 7, third spring 10 collective effect under, external stamping press reduce it is a greater part of, protect
The safety for having protected battery 3, passes through the second through-hole, third through-hole and fourth hole by bolt, and the second inclined plate 17 is fixed on the
It one inclined plate, 15 surface, can be from 23 bleeder of gutter channel when rainwater enters 1 inside of device noumenon due to the presence of gutter channel 23
Ontology 1 makes battery 23 by rain erosion, not pull the second fixed plate 16, it is fixed that the second fixed plate 16 drives one end to pass through second
5th fixed plate 34 on 16 opposite of plate, rotates knob 24, and knob 24 drives the rotation of the first conical gear 26, the first conical gear 26
The second conical gear 28 is driven to rotate, the second conical gear 28 drives screwed pipe 32 to rotate, and screwed pipe 32 drives screw rod 29 to move downward,
When 29 one end of screw rod passes through the second 16 1 side through hole of fixed plate, Air Filter is fixed on right above battery 23, has sheltered from dust.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (8)
1. a kind of new-energy automobile power battery safety system, it is characterised in that: including device noumenon (1), described device
Ontology (1) two sides have been connected by screw to rubber block (13), and rubber block (13) other end has movable plate (6) by being glued,
Movable plate (6) quantity is two, and movable plate (6) the side both sides are welded with sliding bar (12), the sliding bar
(12) one end passes through device noumenon (1), and is welded with third spring (10) on the outside of device noumenon (1), the third spring (10)
The other end is welded on movable plate (6) side, and third spring (10) is set on the outside of sliding bar (12), the sliding bar (12) one
End is across device noumenon (1) side, and sliding bar (12) one end is connected with rotating bar (5) by rotary shaft, the rotating bar (5)
The other end is connected with sliding shoe (33) by rotary shaft, and described device ontology (1) inner wall side is welded with the 5th fixed plate (34),
5th fixed plate (34) side offers T-type sliding slot, is connected with inside T-type sliding slot sliding shoe (33), and the described 5th is fixed
Plate (34) quantity is two.
2. a kind of new-energy automobile power battery safety system according to claim 1, it is characterised in that: the dress
It sets ontology (1) inner wall two sides to be welded with the first mandril (2), the first mandril (2) outer sheath is equipped with first sleeve (4), institute
It states first sleeve (4) inner wall side to be welded with second spring (8), second spring (8) other end is welded on the first mandril (2)
One end, first sleeve (4) side are welded with rubber slab (9).
3. a kind of new-energy automobile power battery safety system according to claim 1, it is characterised in that: the dress
It sets and is placed with battery (3) inside ontology (1), battery (3) model are as follows: 3-EFV-200.
4. a kind of new-energy automobile power battery safety system according to claim 1, it is characterised in that: described
It is welded with first connecting rod (18) at the top of five fixed plates (34), described first connecting rod (18) one end is welded with the first inclined plate (15), institute
It states device noumenon (1) two sides and offers first through hole, be placed in first through hole the second inclined plate (17), second inclined plate
(17) side both sides offer the second through-hole, offer third through-hole at the top of the first connecting rod (18) and the first inclined plate (15)
And fourth hole, and third through-hole, fourth hole inner wall are carved with screw thread.
5. a kind of new-energy automobile power battery safety system according to claim 1, it is characterised in that: described
Five fixed plates (34) side is welded with first shell (35), and first shell (35) the inner wall bottom is welded with kelly (27), institute
It states kelly (27) other end to be provided with the second conical gear (28), be welded at the second conical gear (28) top center axis
Screwed pipe (32), the screwed pipe (32) is internal to be connected through a screw thread screw rod (29), and described screw rod (29) one end passes through the second circular cone
Gear (28), and the second conical gear (28) both ends both pass through first shell (35).
6. a kind of new-energy automobile power battery safety system according to claim 5, it is characterised in that: described
It is welded with guide rod (31), is welded with sliding panel (30) at the top of the screw rod (29), and guide rod (31) one end at the top of one shell (35)
Across sliding panel (30).
7. a kind of new-energy automobile power battery safety system according to claim 5, it is characterised in that: described
One shell (35) side offers fifth hole, and fifth hole inner wall opens up fluted, and second connecting rod is connected in groove
(25), described second connecting rod (25) one end is welded with the first conical gear (26), and the first conical gear (26) and the second circular cone
Gear (28) intermeshing, second connecting rod (25) other end are welded with knob (24).
8. a kind of new-energy automobile power battery safety system according to claim 4, it is characterised in that: described
It is offered gutter channel (23) at the top of two inclined plates (17), gutter channel (23) quantity is eight, described device ontology (1) inner wall one
Side is welded with third fixed plate (20), and third fixed plate (20) side is welded with the first depending post, is arranged on the outside of the first depending post
Have rotation axis (19), being glued on the outside of rotation axis (19) has Air Filter (21), and described Air Filter (21) one end passes through the 5th fixed plate
(34), and Air Filter (21) one end is welded with the 4th fixed plate (22), and the 4th fixed plate (22) one end is welded with second and fixes
Plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097714.3A CN109130824A (en) | 2018-09-20 | 2018-09-20 | A kind of new-energy automobile power battery safety system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811097714.3A CN109130824A (en) | 2018-09-20 | 2018-09-20 | A kind of new-energy automobile power battery safety system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109130824A true CN109130824A (en) | 2019-01-04 |
Family
ID=64815085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811097714.3A Pending CN109130824A (en) | 2018-09-20 | 2018-09-20 | A kind of new-energy automobile power battery safety system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109130824A (en) |
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Effective date of registration: 20240531 Address after: Unit 304, Building 1-4, Qishanyuan, Shangjie Town, Minhou County, Fuzhou City, Fujian Province, 350000 Applicant after: Huang Jingwen Country or region after: China Address before: 211300 No. 3, ancient Tan Road, Gaochun District Economic Development Zone, Nanjing, Jiangsu Applicant before: NANJING GVG AUTOMOTIVE POWER Co.,Ltd. Country or region before: China |
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