CN110323462B - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN110323462B CN110323462B CN201910319532.4A CN201910319532A CN110323462B CN 110323462 B CN110323462 B CN 110323462B CN 201910319532 A CN201910319532 A CN 201910319532A CN 110323462 B CN110323462 B CN 110323462B
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- Prior art keywords
- cover plate
- shell
- battery pack
- electrolyte
- electric core
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- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/42—Grouping of primary cells into batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery pack, which comprises an insulating member, a shell, a cover plate and a plurality of naked battery cells, wherein the insulating member is arranged on the shell; an opening for placing the bare cell is formed in one surface of the shell, and the opening is matched with the cover plate and is in sealing connection with the cover plate; the cover plate is provided with a pole column, the naked electric core is provided with a pole lug, and the naked electric core is connected with the pole column after being connected in series and/or in parallel through the pole lug; the naked battery cell is positioned in a cavity formed by the shell and the cover plate, and electrolyte is injected into the cavity formed by the shell and the cover plate; every two adjacent naked electric core between be equipped with insulating member. The battery pack provided by the invention has the advantages that the battery pack does not need to be composed of a plurality of single batteries, and the production efficiency and the energy density can be improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery pack.
Background
Most of the existing battery packs comprise a plurality of batteries; each battery comprises a respective battery core, an insulating assembly (a battery outer membrane or a battery shell) and electrolyte, and a plurality of batteries are connected in series and parallel by mechanical connection and circuits to form a battery pack; some of the power battery module structures are provided with module structures, and can be freely combined to transform the energy of the battery according to the use requirements. In this scheme, the battery case or the battery adventitia of a plurality of battery cells that the battery package contains can reduce the whole energy density of battery package when uniting to there are the problem that mechanical connection technology is complicated, circuit series parallel connection technology is complicated and production efficiency is low.
Therefore, how to provide a battery pack with high production efficiency and high energy density is a problem to be solved.
Disclosure of Invention
The invention mainly aims to provide a battery pack, which is not required to be composed of a plurality of single batteries and can improve the production efficiency and the energy density.
The invention provides a battery pack, which comprises an insulating member, a shell, a cover plate and a plurality of naked battery cells, wherein the insulating member is arranged on the shell; an opening for placing the bare cell is formed in one surface of the shell, and the opening is matched with the cover plate and is in sealing connection with the cover plate; the cover plate is provided with a pole column, the naked electric core is provided with a pole lug, and the naked electric core is connected with the pole column after being connected in series and/or in parallel through the pole lug; the naked battery cell is positioned in a cavity formed by the shell and the cover plate, and electrolyte is injected into the cavity formed by the shell and the cover plate; every two adjacent naked electric core between be equipped with insulating member.
Further, the insulating member is an insulating separator; the insulating partition plate is used for dividing a cavity formed by the shell and the cover plate into a plurality of electric core grooves, and the electric core grooves are matched with the naked electric cores.
Further, the device also comprises a plurality of busbars; the busbar is located between naked electric core and the utmost point post, the utmost point ear of naked electric core passes through the busbar carries out series connection and/or parallel connection, utmost point post with the busbar is connected.
Further, the bus bar is fixed on the cover plate.
Furthermore, a plurality of limiting lugs used for limiting the naked electric core to move in a cavity formed by the shell and the cover plate are arranged on the busbar, and the lugs are located at the top end of the naked electric core; every limit ear respectively with one the utmost point ear is connected just one side top of limit ear is in the top of naked electric core makes the busbar is right naked electric core carries on spacingly.
Furthermore, a plurality of connecting through holes for passing through the electrolyte are formed in the insulating partition plate.
Further, the electrolyte circulation device also comprises an electrolyte external circulation component; the electrolyte external circulation component is positioned outside a cavity formed by the shell and the cover plate; two ends of a cavity formed by the shell and the cover plate are respectively communicated with two ends of the electrolyte external circulation component, and the electrolyte flows in the cavity and the electrolyte external circulation pipeline.
Further, the electrolyte external circulation member comprises an external circulation pipe and a driving device for driving the electrolyte to flow, the driving device is arranged on the external circulation pipe, and two ends of a cavity formed by the shell and the cover plate are respectively communicated with two ends of the external circulation pipe.
Furthermore, the cover plate is provided with a liquid injection hole for injecting the electrolyte into a cavity formed by the shell and the cover plate.
Further, the housing and the cover plate are connected by laser welding.
The battery pack has the beneficial effects that:
an opening for placing the naked electric core is arranged on one surface of the shell, the opening is matched and hermetically connected with the cover plate, the cover plate is provided with a pole column, the naked electric core is provided with a pole ear, the naked electric core is connected with the pole column after being connected in series and/or in parallel through the pole ear, the naked electric cores are positioned in a cavity formed by the shell and the cover plate, electrolyte is injected into the cavity formed by the shell and the cover plate, an insulating component is arranged between every two adjacent naked electric cores, a battery pack structure which does not need to be formed by a plurality of single batteries is provided, the battery pack can be provided with the only shell, and the electrolyte and the bare cells are positioned in the shell, so that the injection operation of the electrolyte is reduced, the shell of the conventional single battery is not needed, the efficiency of producing the battery pack can be improved, and the energy density of the battery pack is improved.
Drawings
Fig. 1 is an exploded view of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic view of an assembly structure of a battery pack according to an embodiment of the invention;
FIG. 3 is a schematic structural view of a housing and an insulating member according to an embodiment of the present invention;
fig. 4 is an enlarged schematic view of a spacing ear in the embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 3, the battery pack of the present invention includes an insulating member 6, a case 1, a cover plate 2, and a plurality of bare cells 3; one side of the shell 1 is provided with an opening for placing the bare cell 3, the opening is matched with the cover plate 2, and the opening is hermetically connected with the cover plate 2; be equipped with utmost point post 4 on the above-mentioned apron 2, be equipped with utmost point ear 5 on the above-mentioned naked electric core 3, above-mentioned naked electric core 3 is connected with above-mentioned utmost point post 4 after carrying out series connection and/or parallel connection through above-mentioned utmost point ear 5; the bare cell 3 is positioned in a cavity formed by the shell 1 and the cover plate 2, and electrolyte is injected into the cavity formed by the shell 1 and the cover plate 2; the insulating member 6 is arranged between every two adjacent naked electric cores 3.
The battery pack provided by the application has the advantages that the battery pack structure formed by a plurality of single batteries is not needed, namely the battery pack provided by the invention can be provided with the only shell 1, the electrolyte and the plurality of naked battery cores 3 are positioned in the shell 1, the naked battery cores 3 are directly inserted into the battery pack, 200-400 pcs battery cores can be simultaneously subjected to formation and partial capacity, the injection operation of the electrolyte is reduced, the shell of the existing single battery is not needed, the weight and the assembly welding process of the existing single battery structural part are omitted, the efficiency of generating the battery pack can be improved, and the energy density of the battery pack is improved.
The pole 4 penetrates through the cover plate 2, and the part of the cover plate 2 for mounting the pole 4 is in sealing fit with the pole 4; the part of the pole 4 in the cavity formed by the shell 1 and the cover plate 2 is connected with the naked electric core 3.
The case 1 and the cover plate 2 are connected by laser welding, and the joint is sealed after the laser welding is detected by a sealing test. The battery pack is an aluminum-shell battery pack.
The insulating member 6 has a structure that allows conductive ions in the electrolytic solution to pass therethrough; the insulating member 6 is arranged between every two adjacent naked electric cores 3, so that the direct contact extrusion of the two adjacent naked electric cores 3 can be reduced, and the battery pack has better safety performance and charge-discharge performance.
In this embodiment, the insulating member 6 is an insulating spacer; the insulating partition plate is used for dividing a cavity formed by the shell 1 and the cover plate 2 into a plurality of electric core grooves, and the electric core grooves are matched with the naked electric core 3. The bare cells 3 in the cavity formed by the shell 1 and the cover plate 2 can be limited by using the insulating partition plate as the insulating member 6, so that the strength of mutual extrusion between the bare cells 3 is prevented from being overlarge, and the safety performance of the battery pack is improved.
The insulating members 6 are parallel to each other and perpendicular to the opening of the shell 1, so that the naked electric core 3 can be conveniently installed; insulating member 6 divides the cavity that above-mentioned casing 1 and apron 2 formed into a plurality of electric core groove that the volume equals along a direction, makes naked electric core 3 also neatly arrange after placing in the electric core groove, is favorable to improving the reliability of battery package structure and the simplicity of battery package internal connection. In this embodiment, naked electric core 3 falls into two and arranges to different and be located same electric core inslot to two naked electric cores 3 of its transversely, can be after reaching the extruded purpose of reducing two naked electric cores 3 direct contact, minimize insulating member 6's use, with reduce cost.
In another embodiment, the insulating member 6 may be an insulating separator having a low cost and a low mass compared to the insulating separator, so that the use of the insulating separator as the insulating member 6 can reduce the production cost and the weight of the battery pack.
In this embodiment, the battery pack of the present invention further includes a plurality of bus bars 7; above-mentioned busbar 7 is located above-mentioned naked electric core 3 and utmost point post 4 between, and the utmost point ear 5 of above-mentioned naked electric core 3 carries out series connection and/or parallel connection through above-mentioned busbar 7, and above-mentioned utmost point post 4 is connected with above-mentioned busbar 7. The busbar 7 is of rigid construction; the busbar 7 is used for completing the electric connection between the plurality of naked electric cores 3 and the electric connection between the naked electric cores 3 and the pole posts 4, and the pole lugs 5 and the pole posts 4 of the naked electric cores 3 are connected through the busbar 7, so that the connecting circuit can be reduced, and the structural stability of the battery pack is improved.
In this embodiment, the bus bar 7 is welded and fixed to the cover plate 2. The naked electric core 3 carries out series-parallel connection through the busbar 7 on the apron 2 to reach the specification of the rated current voltage of whole car, can save the series-parallel connection welding process between the battery.
In this embodiment, the bare cell 3 is prepared by a winding, hot-pressing and baking process; the electrode lug of the naked electric core 3 comprises a positive electrode lug and a negative electrode lug. The post 4 includes a positive post and a negative post.
In this embodiment, the busbar 7 is provided with a plurality of limiting lugs 9 for limiting the movement of the bare cell 3 in a cavity formed by the casing 1 and the cover plate 2, and the lug 5 is located at the top end of the bare cell 3; every above-mentioned spacing ear 9 is connected with one above-mentioned utmost point ear 5 respectively and the top of above-mentioned naked electric core 3 is pushed up to one side of above-mentioned spacing ear 9, makes above-mentioned busbar 7 carry on spacingly to above-mentioned naked electric core 3. The bus bar 7 is limited by the limiting lugs 9 to the bare cell 3, so that the safety performance and the connection reliability of the battery pack can be further improved, the bus bar 7 can be more conveniently connected with the lugs 5 by the limiting lugs 9, and the current at the joint of the bus bar 7 and each lug 5 is equal and has high current stability.
Referring to fig. 4, in the present embodiment, the limiting lug 9 includes a connecting portion 91 electrically connected to the tab 5 and a fastening portion 92 for fastening one side of the tab 5, the connecting portion 91 and the fastening portion 92 are integrated, and the connecting portion 91 is perpendicular to the fastening portion 92. Can restrict utmost point ear 5 through buckling parts 92 and remove to prevent that the connection structure between connecting portion 91 and utmost point ear 5 from being torn, prevent promptly that naked electric core 3 from parallel movement in casing 1 from destroying being connected of spacing ear 9 and utmost point ear 5.
In addition, spacing ear 9 is the top of rigid structure and the one side top of above-mentioned naked electric core 3 of above-mentioned spacing ear 9, can prevent that naked electric core 3 from removing in the direction outside the opening to casing 1.
The insulating partition plate is provided with a plurality of connecting through holes for passing through the electrolyte. Electrolyte can circulate in a cavity formed by the shell 1 and the cover plate 2 through the connecting through holes, so that heat in the battery pack is balanced, and local temperature rise in the battery pack is reduced.
In the embodiment, in order to improve the heat dissipation performance and ensure that the internal temperature of the battery pack is at the normal working temperature, the battery pack further comprises an electrolyte external circulation component 8; the electrolyte external circulation component 8 is positioned outside the cavity formed by the shell 1 and the cover plate 2; both ends of a cavity formed by the case 1 and the cover plate 2 are respectively communicated with both ends of the electrolyte external circulation member 8, and the electrolyte flows in the cavity and the electrolyte external circulation line 8. The electrolyte inside the battery pack shell 1 flows to the outside of the shell 1 through the electrolyte external circulation component 8 to dissipate heat, so that the heat dissipation performance and the safety performance of the battery pack are improved.
The electrolyte external circulation member 8 comprises an external circulation pipe 82 and a driving device 81 for driving the electrolyte to flow, the driving device 81 is arranged on the external circulation pipe 82, and two ends of the cavity formed by the shell 1 and the cover plate 2 are respectively communicated with two ends of the external circulation pipe 82, so that the automatic heat dissipation of the battery pack is realized. The driving device 81 is a device capable of driving the liquid to flow, such as an electric pump.
The driving device 81 comprises a motor which can be directly powered by the battery pack of the invention, namely, the driving device 81 can be powered by an internal power supply; at this time, the driving device 81 may be connected to the pole 4. Therefore, the battery pack can automatically dissipate heat without an external power supply or other energy sources.
Further, in the present embodiment, the cross-sectional area of the cavity formed by the housing 1 and the cover plate 2 in the flowing direction of the electrolyte is 5 to 20 times larger than the cross-sectional area of the external circulation pipe 82.
The external circulation pipe 82 may include two first circulation pipes and a plurality of second circulation pipes provided outside the housing 1, the second circulation pipes having a pipe diameter smaller than that of the first circulation pipes; two ends of the second circulating pipe are respectively communicated with one end of a first circulating pipe, and the other ends of the two circulating pipes are communicated with two opposite ends of a cavity formed by the shell 1 and the cover plate 2; the driving means 81 is provided on the first circulation duct. The external circulation pipe 82 can improve the heat exchange efficiency of the electrolyte flowing inside the external circulation pipe 82, i.e., the heat dissipation efficiency, by adopting the above-described structure. Wherein, the cross-sectional area of the cavity formed by the shell 1 and the cover plate 2 along the flowing direction of the electrolyte is 5 to 20 times of the cross-sectional area of the first circulating pipe.
Further, the electrolyte solution circulation member 8 may be provided in plural. The electrolyte outer circulation component 8 shell sets up the heat dissipation component and makes electrolyte dispel the heat fast, and the heat dissipation component can be heat conduction piece, fan etc..
In this embodiment, the lid plate 2 is provided with a liquid inlet 10 for injecting the electrolyte into the cavity formed by the case 1 and the lid plate 2. The production of the battery pack of the present invention can be facilitated, thereby reducing the cost. Specifically, the operations of formation and replenishment can be directly performed through the liquid inlet 10.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A battery pack is characterized by comprising an insulating member, a shell, a cover plate and a plurality of naked battery cells; the top surface of the shell is provided with an opening for placing the bare cell, and the opening is matched with the cover plate and is in sealing connection with the cover plate; the cover plate is provided with a pole column, the naked electric core is provided with a pole lug, and the naked electric core is connected with the pole column after being connected in series and/or in parallel through the pole lug; the naked battery cell is positioned in a cavity formed by the shell and the cover plate, and electrolyte is injected into the cavity formed by the shell and the cover plate; the insulating member is arranged between every two adjacent naked electric cores; the insulating component is provided with a plurality of connecting through holes for passing through the electrolyte, and the connecting through holes penetrate through the insulating component along the directions of the left end and the right end of the cavity; the battery pack further includes an electrolyte external circulation member; the electrolyte external circulation component is positioned outside a cavity formed by the shell and the cover plate, the left end and the right end of the cavity formed by the shell and the cover plate are respectively communicated with the two ends of the electrolyte external circulation component, and the electrolyte flows in the cavity and the electrolyte external circulation pipeline; the electrolyte external circulation component comprises a driving device for driving the electrolyte to flow, and the driving device is connected with the pole.
2. The battery pack according to claim 1, wherein the insulating member is an insulating separator; the insulating partition plate is used for dividing a cavity formed by the shell and the cover plate into a plurality of electric core grooves, and the electric core grooves are matched with the naked electric cores.
3. The battery pack according to claim 1, further comprising a plurality of bus bars; the busbar is located between naked electric core and the utmost point post, the utmost point ear of naked electric core passes through the busbar carries out series connection and/or parallel connection, utmost point post with the busbar is connected.
4. The battery pack according to claim 3, wherein the bus bar is fixed to the lid plate.
5. The battery pack according to claim 3 or 4, wherein the busbar is provided with a plurality of limiting lugs for limiting the bare cell to move in a cavity formed by the shell and the cover plate, and the limiting lugs are located at the top end of the bare cell; every limit ear respectively with one the utmost point ear is connected just one side top of limit ear is in the top of naked electric core makes the busbar is right naked electric core carries on spacingly.
6. The battery pack according to claim 1, wherein the electrolyte external circulation member further comprises an external circulation tube, the driving device is disposed on the external circulation tube, and both ends of the cavity formed by the case and the cover plate are respectively communicated with both ends of the external circulation tube.
7. The battery pack according to claim 1, wherein the lid plate is provided with a liquid injection hole for injecting the electrolyte into a cavity formed by the case and the lid plate.
8. The battery pack according to claim 1, wherein the case and the cap plate are connected by laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319532.4A CN110323462B (en) | 2019-04-19 | 2019-04-19 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319532.4A CN110323462B (en) | 2019-04-19 | 2019-04-19 | Battery pack |
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| CN110323462A CN110323462A (en) | 2019-10-11 |
| CN110323462B true CN110323462B (en) | 2021-07-27 |
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| CN201910319532.4A Active CN110323462B (en) | 2019-04-19 | 2019-04-19 | Battery pack |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112768817B (en) * | 2019-10-21 | 2021-12-07 | 比亚迪股份有限公司 | Battery module and automobile |
| CN112838331B (en) * | 2019-11-22 | 2022-01-07 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN111009690A (en) * | 2019-12-20 | 2020-04-14 | 珠海格力电器股份有限公司 | Laminate polymer battery module |
| CN111403635A (en) * | 2020-03-27 | 2020-07-10 | 湖北亿纬动力有限公司 | Power battery pack |
| CN111293253B (en) * | 2020-04-24 | 2020-10-23 | 比亚迪股份有限公司 | Battery packs and electric vehicles |
| CN113594610B (en) * | 2020-04-30 | 2024-02-23 | 蜂巢能源科技有限公司 | Battery module for vehicle and vehicle |
| CN114079111B (en) * | 2020-08-11 | 2023-11-14 | 好风光储能技术(成都)有限公司 | Large vertical energy storage battery and energy storage container |
| CN112510301B (en) * | 2020-11-30 | 2023-03-24 | 湖南海博瑞德电智控制技术有限公司 | Battery system |
| CN112510299B (en) * | 2020-11-30 | 2022-12-23 | 湖南海博瑞德电智控制技术有限公司 | Demodular battery system |
| CN112510300B (en) * | 2020-11-30 | 2022-12-23 | 湖南海博瑞德电智控制技术有限公司 | Modularized liquid-cooled battery system |
| CN114614178A (en) * | 2020-12-09 | 2022-06-10 | 华为数字能源技术有限公司 | Battery module, battery package and vehicle |
| CN113764799A (en) * | 2021-09-07 | 2021-12-07 | 欣旺达电动汽车电池有限公司 | Single cells, battery modules and battery packs |
| CN115472971B (en) * | 2022-10-27 | 2024-07-19 | 维沃移动通信有限公司 | Battery and electronic device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201084789Y (en) * | 2007-07-24 | 2008-07-09 | 雷天电池技术有限公司 | High-voltage power type lithium ion rechargeable battery |
| CN201689956U (en) * | 2010-05-19 | 2010-12-29 | 董银姬 | Storage battery acid cooler and matched cooling system thereof |
| CN105576171A (en) * | 2016-03-22 | 2016-05-11 | 宁德时代新能源科技股份有限公司 | Battery module |
| CN108336283B (en) * | 2017-12-29 | 2021-02-12 | 中国电子科技集团公司第十八研究所 | Ultra-large-capacity single battery and preparation method thereof |
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Effective date of registration: 20230625 Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee 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 Patentee 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 Patentee 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 Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
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