CN110048037A - A kind of no pole power battery top cover and power battery - Google Patents
A kind of no pole power battery top cover and power battery Download PDFInfo
- Publication number
- CN110048037A CN110048037A CN201910298292.4A CN201910298292A CN110048037A CN 110048037 A CN110048037 A CN 110048037A CN 201910298292 A CN201910298292 A CN 201910298292A CN 110048037 A CN110048037 A CN 110048037A
- Authority
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- China
- Prior art keywords
- conductive unit
- conductive
- top cover
- plate
- power battery
- 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.)
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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 of a single cell or a single battery
- 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 of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
The invention discloses a kind of no pole power battery top cover, including coping plate, the first conductive unit, the second conductive unit, explosion-proof valve, electrolyte filling hole structure and the lower insulating part that are sealed on coping plate；The coping plate is equipped with conductive unit mounting hole, and the first conductive unit, the second conductive unit are seal-installed on respectively at conductive unit mounting hole；Elastic sealing element is provided between conductive unit and coping plate, weld plate is respectively adopted in first conductive unit, the second conductive unit and the injection molding of conductive base block nesting is integral, weld plate is fixedly connected with coping plate, and the first card slot and convex closure are additionally provided in weld plate.The present invention reduces outside batteries height under the premise of not influencing inside battery space, improves mould group space utilization rate；Structure is simplified, reduces the quantity of top cover accessory, reduces costs；Top cover pole cellular construction is optimized, the intensity of conductive unit is promoted, reduces materiel machining cost.
Description
Technical field
The invention mainly relates to power battery technology field, in particular to it is a kind of it is highly simplified, inexpensive, without perforation pole
The power battery top cover of column and power battery comprising the power battery top cover.
Background technique
With becoming increasingly conspicuous for environmental problem, low-carbon economy has become the mainstream of economic development.And it is increasingly serious
Air situation also further promote the rise of new-energy automobile.Hybrid vehicle and pure electric automobile are as new energy vapour
The representative of vehicle has also gradually obtained vast production firm and the approval of consumer.Power battery is as the main of new-energy automobile
Power source, it has also become one of critical component of electric car.
As the critical component of electric car, power battery all has vehicle dynamic property, economy, safety great
It influences.Face is gradually standardized with power battery market, and power battery module specification is gradually unified, forms the mark of several specifications
Quasi-mode group, and space utilization rate of the current driving force battery in mould group be not high, the capacity of entire mould group and volume energy density by
To larger impact.Therefore, it is necessary to be adjusted on power battery structure, cell height space utilization in Lai Tigao mould group
Rate further promotes cell capacity.
On the other hand, as the subsidy of national new energy is fallen off and the cost of raw material rises, power battery upgrading drop is originally compeled
The eyebrows and eyelashes；As the biggish power battery top cover of cost of raw material accounting, also it is badly in need of making structure optimization, meets function and safety
Under the premise of it is required that, simplifies structure as far as possible, reduce cost.
In view of this, it is necessory to develop a power battery top cover, to solve the below technical problem that
1. reducing outside batteries height, Lifting Modules group space utilization rate under the premise of not influencing inside battery space；
2. simplifying structure, the quantity of top cover accessory is reduced, cost is reduced；
3. optimizing the structure of conductive unit, the intensity of conductive unit is promoted, reduces materiel machining cost.
Summary of the invention
A kind of no pole power battery top cover is provided it is an object of the invention to overcome the deficiency of the above-mentioned prior art, is led to
Adjustment top cover conductive unit structure type is crossed, under the premise of not influencing inside battery space, reduces external height, Lifting Modules group
Space utilization rate；Meanwhile simplifying structure, reduce Material Cost.
To achieve the above object, a kind of no pole power battery top cover provided by the invention, including coping plate, sealed set
In on coping plate the first conductive unit, the second conductive unit, explosion-proof valve, electrolyte filling hole structure and be set to below the coping plate
Lower insulating part；It is set on the coping plate there are two conductive unit mounting hole, first conductive unit, the second conductive unit divide
It is not seal-installed at conductive unit mounting hole；The first elastic packing is provided between first conductive unit and coping plate
Part is provided with the second elastic sealing element between second conductive unit and coping plate, wherein first conductive unit,
Weld plate is respectively adopted in two conductive units and the injection molding of conductive base block nesting is integral, and the weld plate and coping plate are solid
It is fixed to connect, the first card slot and convex closure of nesting plastic cement when being additionally provided in the weld plate for being molded.
Preferably, the first conductive unit, the second conductive unit are respectively designed to three layers of step structure, and described first is conductive single
The second card slot and pit for nesting plastic cement when injection molding are also set up on first, the second conductive unit.
Preferably, the lower insulating part is respectively equipped with two annulars in position corresponding with two conductive unit mounting holes
It buckles, the annular button bit for the installation that is clasped with annular is further respectively had on each conductive unit mounting hole, it is described lower exhausted
Edge part and conductive unit mounting hole, which pass through to be formed, snaps connection the structure that is fixed as one.
Preferably, the lower insulating part is respectively equipped with two annulars in position corresponding with two conductive unit mounting holes
Rubber column gel column, the annular rubber column gel column includes the mushroom header structure formed by thermoplasticity deformation, and the lower insulating part passes through mushroom
Header structure is articulated on the periphery of conductive unit mounting hole.
Preferably, mounting groove is equipped with around the conductive unit mounting hole.
Preferably, the mounting groove is arranged to two-stage step, the first step close to the conductive unit mounting hole center of circle, and first
The second step of the solder-bump for absorbing weld plate is additionally provided on the outside of step；Conductive unit is set to the upper of first step
Side, weld plate are set to above second step, and conductive unit and weld plate are fixed opposite position on mounting groove
It postpones, encapsulated injection molding is combined as a whole, and plastic cement is filled into the first card slot of weld plate and convex closure and is filled into conductive unit
The second card slot and pit so that weld plate and conductive unit are combined as a whole.
Preferably, the weld plate is welded with coping plate or gluing is fixed.
Preferably, first conductive unit uses conduction PPS injection molded, and second conductive unit is using insulation
PPS injection molded, the first conductive unit are electrically connected with coping plate by conduction PPS, and the second conductive unit insulated enclosure is installed on
On coping plate；Resistance between first conductive unit and coping plate is 0~50000mohm.
Preferably, the first conductive matrix on first conductive unit uses aluminium sheet continuous punch forming, and described second
The second conductive matrix on conductive unit uses copper-aluminum composite board continuous punch forming；The copper-aluminum composite board copper layer thickness is
0.3~5mm, the aluminum layer thickness are 0.5~20.0mm.
The present invention also provides a kind of power batteries, comprising: battery case is contained in the intracorporal naked battery core of battery case, perfusion
In the intracorporal electrolyte of battery case, and it is seal-installed on housing of power cell and is equipped with the power battery top cover of pole.
Preferably, the power battery is integrally square；The power battery can be lithium ion battery.
The beneficial effects of the present invention are:
1. greatly reducing outside batteries height under the premise of not influencing inside battery space, mould group space is improved
Utilization rate.
2. simplifying cap structure, reduces top cover number of fitting parts, reduce costs.
3. optimizing conductive unit structure, conductive unit intensity is improved, reduces materiel machining cost.
Detailed description of the invention
Fig. 1 is the shaft side figure of power battery of the invention；
Fig. 2 is the shaft side figure of power battery top cover of the present invention；
Fig. 3 is power battery top cover explosive view of the present invention；
Fig. 4 is power battery capping top view of the present invention；
Fig. 5 is the cut-away illustration of power battery top cover of the present invention；
Fig. 6 is the details A detailed view in Fig. 5；
Fig. 7 is the explosive view of conductive unit；
Fig. 8 is the shaft side figure of conductive matrix；
Fig. 9 is the shaft side figure of weld plate；
Figure 10 is the cut-away illustration of conductive unit；
Figure 11 is the shaft side figure of lower insulating part；
Figure 12 is the further schematic diagram of Fig. 6；
Appended drawing reference:
1, power battery top cover；11, coping plate；12, the first conductive unit；121, the first conductive matrix；122, elasticity is close
Sealing；13, the second conductive unit；131, the second conductive matrix；132, plastic cement；133, weld plate；1331, the first card slot；
1332, convex closure；1333, concaveconvex structure；1311, the second card slot；1312, pit；1313, gap structure；134, elastic sealing element；
14, explosion-proof valve；141, explosion rupture disk；142, explosion rupture disk protective film；143, elliptical slot；15, liquid injection hole；16, lower insulating part；161,
Annular buckle；17, mounting groove；171, first step；172, second step；18, conductive unit mounting hole.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
With reference to Fig. 1, the invention discloses a kind of power battery, including battery case, it is contained in the intracorporal naked electricity of battery case
Core is poured into the intracorporal electrolyte of battery case, and is seal-installed on housing of power cell and is equipped with the power battery of pole
Top cover.The housing of power cell and the mating installation of power battery top cover of the invention, the size of the two will be adapted.The present invention
Power battery can be lithium ion battery.
Please continue to refer to Fig. 2, Fig. 3, a kind of power battery top cover 1 of the invention, coping plate 11, sealing including rectangle are set
It is placed in the first conductive unit 12 and the second conductive unit 13, explosion-proof valve 14, electrolyte filling hole structure 15 of the truncated cone-shaped on coping plate 11
And lower insulating part 16.
Specifically, an elliptical slot 143 is arranged in the middle part of the coping plate 11, it is described explosion-proof for installing explosion-proof valve 14
Valve 14 includes in upper explosion rupture disk protective film 142, the explosion rupture disk 141 being arranged in below explosion rupture disk protective film 142.The lower insulation
Part 16 is mounted on the lower section of coping plate 11.Conductive unit mounting hole 18 there are two being set on the coping plate 11, described two conductions
Unit mounting hole 18 is symmetricly set on coping plate 11.First conductive unit 12, the second conductive unit 13 are seal-installed on
At mounting hole 18.Elastic sealing element 134 is provided between first conductive unit 12 and coping plate 11, described second is conductive single
Elastic sealing element 134 is also equipped between member 13 and coping plate 11.
As shown in Fig. 7, Fig. 8, Fig. 9, weld plate 133 and conductive base is respectively adopted in two conductive units 12,13
Block nesting injection molding is integral.Meanwhile concaveconvex structure 1333, the concaveconvex structure 1333 are set in the weld plate 133
Including the first card slot 1331 and convex closure 1332, nesting plastic cement when injection molding, proof strength.First card slot 1331 and convex closure
1332 intersect.After two conductive units 12,13 are mounted on conductive unit mounting hole 18, conductive matrix 121,
The surface of coping plate 11 is stretched out in 131 top surface.
As shown in figure 8, the conduction matrix 121,131 is designed to three layers of step structure.The outer surface of the conduction matrix
Gap structure 1313 is set, and the gap structure 1313 includes the second card slot 1311 and pit 1312 being orthogonally set, note
Nesting plastic cement when modeling, it is ensured that intensity.Preferably, the second card slot 1311 is horizontally disposed, and pit 1312 is vertically arranged.Also need
It points out, attached drawing 8 is only illustrated, and when implementing the art of this patent, the quantity of the second card slot 1311 and pit 1312, position can be with
Adjustment, these schemes rationally expanded are both fallen within the protection scope of the application.
Two conductive unit mounting holes 18, the conductive unit 12,13 and weld plate 133 is arranged in the coping plate 11
It is connected by plastic cement 132, the bumps in gap structure 1313 and weld plate 133 on the conductive unit 12,13
Structure 1333 is filled into plastic cement 132, and conductive unit 12,13 and weld plate 133 is made to be connected.Figure 12 is please referred to, is enclosed
Around the conductive unit mounting hole 18, it is provided with mounting groove 17, the mounting groove 17 includes first step 171, first step 171
Conductive unit 12,13 is placed in top, and weld plate 133, weld plate 133 are placed in the outside of the conductive unit 12,13
After fixing with the position of conductive unit 12,13, injection moulding plastic makes the two be connected.Weld plate 133 and coping plate 11 are logical
It crosses welding or gluing is fixed, second step can also be arranged in the outside of the first step 171, and the second step is for inhaling
Receive laser welding protrusion.
Lower insulating part 16 can form in several ways, such as injection molding, plastic uptake, compression molding molding mode, with reference to figure
11, annular buckle 161 is set in position of mounting hole, buckles into conductive unit mounting hole 18, completes assembly；Above-mentioned annular buckle
161 can be replaced with annular rubber column gel column, are deformed, are formed " mushroom head " by thermoplasticity, lower insulating part 16 is hung by the mushroom head
On the edge of conductive unit mounting hole 18, so that lower insulating part 16 be made to be fixed on coping plate 11.
As a kind of specific embodiment of the invention, with reference to Fig. 9,133 shape of weld plate can be round or
Rectangular or polygon.Preferably, the weld plate 133 is circle；The weld plate 133 is with coping plate 11 using sharp
Photocoagulation is fixed, and welding form can be seam weld or penetrate weldering；The weld plate 133 can also be used with coping plate 11
Gluing is fixed.
As a kind of specific embodiment of the invention, with reference to Fig. 3, first conductive unit 121 is molded using conduction PPS
Forming, second conductive unit 131 is using insulation PPS injection molded.That is: the first conductive unit 12 passes through big electricity with top cover 1
(conductive PPS) electrical connection is hindered, 13 insulated enclosure of the second conductive unit is installed on top cover 1.First conductive unit 12 and top cover 1 it
Between resistance be 0~50000mohm, it is preferred that resistance between the first conductive unit 12 and top cover 1 is 500~2000mohm；
After first conductive unit 12 is electrically connected with top cover 1, it can prevent shell and coping plate 11 from corroding, meanwhile, big resistance can guarantee second
Conductive unit 13 and shell occur under short-circuit state, and short circuit current can control in a lesser range, be unlikely to cause safety
Accident.
As a kind of specific embodiment of the invention, with reference to Figure 10, the described first conductive matrix 121 uses aluminium sheet continuous punching
Molded, the described second conductive matrix 131 uses copper-aluminum composite board continuous punch forming；The copper-aluminum composite board copper layer thickness is
0.3~5.0mm, aluminum layer thickness are 0.5~20.0mm；Preferably, the copper-aluminum composite board copper layer thickness is 0.6~1.5mm, aluminium
Layer is with a thickness of 1.0~5.0mm；
As a kind of specific embodiment of the invention, the elastic sealing element 134 is annular, and cross sectional shape is " mouth " word
Type, ellipse, circle etc..
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all in the present invention
Inventive concept under, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/be used in it indirectly
He is included in scope of patent protection of the invention relevant technical field.
Claims (10)
1. a kind of no pole power battery top cover (1), which is characterized in that including coping plate (11), be sealed at coping plate
(11) the first conductive unit (12), the second conductive unit (13), explosion-proof valve (14), liquid injection hole (15) structure on and it is set to institute
State the lower insulating part (16) below coping plate (11)；There are two being set on the coping plate (11) conductive unit mounting hole (18), institute
State the first conductive unit (12), the second conductive unit (13) is seal-installed on respectively at conductive unit mounting hole (18)；Described
The first elastic sealing element (122,134), second conductive unit are provided between one conductive unit (12) and coping plate (11)
(13) the second elastic sealing element (122,134) are provided between coping plate (11), wherein first conductive unit (12),
Weld plate (133) are respectively adopted for second conductive unit (13) and the injection molding of conductive base block nesting is integral, the welding metal
Plate (133) is fixedly connected with coping plate (11), nesting plastic cement when being additionally provided on the weld plate (133) for being molded
(132) the first card slot (1331) and convex closure (1332).
2. no pole power battery top cover (1) according to claim 1, which is characterized in that the first conductive unit (12),
Two conductive units (13) are respectively designed to three layers of step structure, first conductive unit (12), the second conductive unit (13)
On also set up for injection molding when nesting plastic cement (132) the second card slot (1311) and pit (1312).
3. no pole power battery top cover (1) according to claim 2, which is characterized in that the lower insulating part (16) exists
Position corresponding with two conductive unit mounting hole (18) is respectively equipped with two annular buckles (161), each described conductive single
Further respectively had on first mounting hole (18) with annular buckle (161) the annular button bit that is coupled, the lower insulating part (16) with
Conductive unit mounting hole (18) snaps connection the structure that is fixed as one by being formed.
4. no pole power battery top cover (1) according to claim 3, which is characterized in that the lower insulating part (16) exists
Position corresponding with two conductive unit mounting hole (18) is respectively equipped with two annular rubber column gel columns, and the annular rubber column gel column includes passing through
Thermoplasticity deformation and the mushroom header structure formed, the lower insulating part (16) are articulated in by mushroom header structure close to conductive single
On the periphery of first mounting hole (18).
5. no pole power battery top cover (1) according to claim 3 or 4, which is characterized in that surround the conductive unit
Mounting hole (18) is equipped with mounting groove (17).
6. no pole power battery top cover (1) according to claim 5, which is characterized in that mounting groove (17) setting
At two-stage step, the first step (171) in close conductive unit mounting hole (18) center of circle, first step (171) outside is additionally provided with
For absorbing the second step (172) of the solder-bump of weld plate (133)；Conductive unit (12,13) is set to first step
(171) top, weld plate (133) is set to above second step (172), by conductive unit on mounting groove (17)
After (12,13) and weld plate (133) fix relative position, encapsulated injection molding is combined as a whole, and plastic cement (132) is filled into weldering
Connect the first card slot (1331) and convex closure (1332) and the second card slot for being filled into conductive unit (12,13) of metal plate (133)
(1311) and pit (1312), so that weld plate (133) and conductive unit (12,13) are combined as a whole.
7. no pole power battery top cover (1) according to claim 3 or 4, which is characterized in that the weld plate
(133) it is fixed with coping plate (11) welding or gluing.
8. a kind of no pole power battery top cover (1) according to claim 1, which is characterized in that described first is conductive single
First (12) use conduction PPS injection molded, and second conductive unit (13) is conductive single using insulation PPS injection molded, first
First (12) are electrically connected with coping plate (11) by conduction PPS, and the second conductive unit (13) insulated enclosure is installed on coping plate (11)
On；Resistance between first conductive unit (12) and coping plate (11) is 0~50000mohm.
9. a kind of no pole power battery top cover (1) according to claim 8, which is characterized in that
The first conductive matrix (121) on first conductive unit (12) uses aluminium sheet continuous punch forming, and described second leads
The second conductive matrix (131) on electric unit (13) uses copper-aluminum composite board continuous punch forming；The copper-aluminum composite board layers of copper
With a thickness of 0.3~5mm, the aluminum layer thickness is 0.5~20.0mm.
10. a kind of power battery characterized by comprising battery case is contained in the intracorporal naked battery core of battery case, is poured into
The intracorporal electrolyte of battery case, and it is seal-installed on housing of power cell and is equipped with the power battery top cover (1) of pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910298292.4A CN110048037A (en) | 2019-04-15 | 2019-04-15 | A kind of no pole power battery top cover and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910298292.4A CN110048037A (en) | 2019-04-15 | 2019-04-15 | A kind of no pole power battery top cover and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110048037A true CN110048037A (en) | 2019-07-23 |
Family
ID=67277192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910298292.4A Pending CN110048037A (en) | 2019-04-15 | 2019-04-15 | A kind of no pole power battery top cover and power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110048037A (en) |
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| CN111081913A (en) * | 2019-12-31 | 2020-04-28 | 深圳市科达利实业股份有限公司 | Power battery cover plate and manufacturing method thereof |
| CN112382813A (en) * | 2021-01-14 | 2021-02-19 | 蜂巢能源科技有限公司 | A mould piece, electric core and battery module down for electric core |
| WO2021155560A1 (en) * | 2020-02-07 | 2021-08-12 | 宁德新能源科技有限公司 | Battery and powered apparatus provided with battery |
| WO2023115947A1 (en) * | 2021-12-22 | 2023-06-29 | 湖北亿纬动力有限公司 | Power battery top cover and power battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023115947A1 (en) * | 2021-12-22 | 2023-06-29 | 湖北亿纬动力有限公司 | Power battery top cover and power battery |
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Effective date of registration: 20230607 Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Applicant after: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. Address before: 518000, 1st floor, 2nd floor, A-B area, 2nd floor, D area-9th floor, Yihe Road, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Applicant before: SUNWODA ELECTRONICS Co.,Ltd. |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Applicant after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Applicant before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |