CN103367670B - Lightweight battery box body for electric automobile and manufacture method thereof - Google Patents
Lightweight battery box body for electric automobile and manufacture method thereof Download PDFInfo
- Publication number
- CN103367670B CN103367670B CN201310288794.1A CN201310288794A CN103367670B CN 103367670 B CN103367670 B CN 103367670B CN 201310288794 A CN201310288794 A CN 201310288794A CN 103367670 B CN103367670 B CN 103367670B
- Authority
- CN
- China
- Prior art keywords
- box body
- battery box
- manufacture method
- base plate
- electric automobile
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000003466 welding Methods 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000001962 electrophoresis Methods 0.000 claims abstract description 4
- 239000004411 aluminium Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 229910001095 light aluminium alloy Inorganic materials 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 7
- 238000003754 machining Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- Sealing Battery Cases Or Jackets (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a lightweight battery box body for an electric automobile and a manufacture method thereof. The battery box body comprises a frame and a base plate fixedly arranged on the frame. The manufacture method of the lightweight battery box body comprises the following steps of: taking cast aluminum 102 as a raw material for casting the frame, and forming a workblank of the frame by means of gravity casting; clamping the frame into a numerically-controlled machine tool, and machining, drilling and holing an installing surface; placing the base plate into the frame, and welding the base plate onto the frame by means of friction stir welding; correcting the shape of the battery box body; and carrying out surface treating and coating on the battery box body by means of electrophoresis machining. The lightweight battery box body and the manufacture method thereof have the beneficial effects that the battery box body is made from the aluminum, so that the weight of the battery box body can be obviously reduced, the integrality, the impact resistance and the surrender resistance of the battery box body can be preferably improved, the machining precision is high, the product batch consistency is high, and the lightweight battery box body can be conveniently changed and interchanged; the cost can be further reduced due to the simple technological process.
Description
Technical field
The present invention relates to electric automobile and manufacture field, particularly relate to lightweight battery casing and the manufacture method thereof of electric automobile.
Background technology
Along with expanding economy, the environmental protection concept of people promotes gradually, and energy-saving and emission-reduction become social consensus.Widely using of the pure electric automobile given prominence to along with environmental protection speciality, the processing of electric automobile battery box also becomes technical barrier anxious to be captured in the industry thereupon.Battery box of pure electric vehicle, except all battery core administrating systems will be held, also to bear the shock of the foreign matter such as vibration and sandstone under the deadweight of battery case itself and automobile high-speed motion state, instead of the chassis of conventional electric automobile simultaneously, need battery case water-tight performance good.How when proof strength and sealing, weight reduction and then the flying power that improves automobile become the developing direction of battery case combination property.
In prior art, the battery case of processing in early stage is all the mode adopting panel beating or punch process, the defects such as this type of battery case ubiquity weight lays particular stress on, processing technology complicated, precision cannot ensure, consistency is poor, the production cycle is long, intensity difference, sealing difference, this many disadvantages causes great inconvenience to the manufacture of product, causes a hidden trouble to the security performance of pure electric automobile simultaneously.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of lightweight battery casing and manufacture method thereof of electric automobile, and the lightweight battery casing produced by this manufacture method has lightweight, overall impact resistance and the strong feature of anti-surrender ability.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the manufacture method providing a kind of lightweight battery casing of electric automobile, and this Battery case comprises framework and base plate, and its manufacturing step comprises:
Employing cast aluminium 102 is the cast raw material of described framework, by the blank of gravitational casting shaping frame;
By described framework clamping in Digit Control Machine Tool, installed surface is processed and bores, attack hole;
Described base plate is loaded in described framework, by friction rabbling welding, base plate is welded on framework;
The profile of described Battery case is corrected;
By electrophoresis processing, surface treatment and application are carried out to described Battery case.
Wherein, 6 millimeters are at least by the wall thickness of the shaping described framework of gravitational casting.
Wherein, by described Battery case clamping after Digit Control Machine Tool, just can be processed all installed surfaces by clamped one time and bore, attack hole.
Wherein, the material of described base plate is aircraft aluminum.
Wherein, the thickness of described base plate is 2 ~ 3 millimeters.
Another technical solution used in the present invention is: the lightweight battery casing providing a kind of electric automobile, and described Battery case comprises framework and is fixed on the base plate on framework, and the manufacture method of this Battery case is the manufacture method described in technique scheme.
Due to the boundary dimensions comparatively large (boundary dimensions is about 1750*1320mm) of Battery case make to cast that area is large, external shape and inner mold complex structure cause wall unevenness even, dynamic high load capacity (needing load to be about vehicle body parts GB vibration-testing by tool national authentication qualification under 250kg state) need be born, sealing property requires high (needing IP67 degree of protection), local accuracy requires high, and the selection of material has higher requirement.After to the analysis & verification repeatedly of multiple material, technician finds that the Battery case cast out by cast aluminium 102 and cast aluminium 104 can both reach good performance, but in actual production, find again that the casting fluidity of cast aluminium 104 is poor, on shaping blank, sand holes are more, percent defective is higher than cast aluminium 102, and the present invention finally adopts cast aluminium 102 for cast raw material.According to casting manufacturability, the wall thickness determining Battery case under light-weighted prerequisite is at least 6mm, and adjusts inner installation site and structure, has reserved allowance be convenient to following process in the position that required precision is high.The wall thickness of at least thick 6mm, is far thicker than the average wall thickness of conventional sheet metal box body 1.5mm, greatly improves anti-impact force and the intensity of Battery case.But be only 2.77g/cm due to the density of cast aluminium 102
3, far below iron plate 7.85g/cm
3density, and the adjustment to installation site, Battery case inside and structure, so the Battery case produced in the present invention still reaches the object of loss of weight.
And in order to reach more light-weighted order further, cast part of the present invention only includes the frame part of Battery case, this is because Battery case casting amount is large, limit by casting technique, the larger wall thickness of working (finishing) area is thicker, otherwise can lack material and cause product rejection, therefore when confirming that the framework of wall thickness at least 6mm can ensure sufficient intensity, base plate adopts the thick aircraft aluminum of 2 ~ 3mm to be directly welded on framework in addition.Again because the welding performance of cast aluminium 102 is poor, and under normal welding mode, aluminium heat conduction fast event deflection is comparatively large, and product distortion can be caused to be out of shape, and very easily occur that dry joint, rosin joint, solder skip cause product poor sealing, welding quality cannot ensure.Therefore, the welding manner of framework and base plate adopts in the industry, there is no used friction rabbling welding.Friction rabbling welding is mainly used in the welding of aviation as aircraft, some positions of rocket at present, also be applied in shipbuilding, have the following advantages than traditional welding: 1, microscopic structure change in welding point heat affected area is little, and residual stress is lower, and welding work pieces is shape not easily; 2, the welding of longer weld seam, heavy in section, diverse location can once be completed; 3, operation process conveniently realizes mechanization, automation, and equipment is simple, and energy consumption is low, and effect is high, requires low to operating environment; 4, without the need to adding welding wire, do not need to weld front oxide film dissolving during weldering aluminium alloy, do not need protective gas, cost is low; 5, can the material of welding heat crack-sensitivity, be applicable to welding dissimilar materials, good seal performance; 6, welding process safety, pollution-free, smoke dust, radiationless.
And in follow-up processing, compared with the Digit Control Machine Tool of high manufacturing accuracy, comprehensive secondary operations is carried out to the installed surface of product and mounting hole site by having, the precision of product can be improved further.
The invention has the beneficial effects as follows: adopt Aluminum alloy frame casting and aircraft aluminum base plate to manufacture Battery case, also help while significantly alleviating its weight and improve its impact resistance and anti-surrender ability, consistency is high in batches for machining accuracy and product, is convenient to install and exchange; In addition, the technological process comparatively simplified can also reduce costs.
Accompanying drawing explanation
Fig. 1 is the structure chart of the lightweight battery casing of electric automobile.
Main element symbol description:
100, Battery case; 1, framework; 2, base plate.
Embodiment
By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1, present embodiment is a kind of lightweight battery casing 100 of electric automobile, and this Battery case 100 comprises framework 1 and base plate 2, and the material of described base plate 2 is aircraft aluminum, and its thickness is 2 ~ 3 millimeters.The manufacture method of described Battery case 100 comprises following steps:
Employing cast aluminium 102 is the cast raw material of described framework 1, and by the blank of gravitational casting shaping frame 1, the wall thickness of this blank is at least 6 millimeters, and leaves allowance;
By described framework 1 clamping in Digit Control Machine Tool, in clamped one time, all installed surfaces processed and bore, attack hole;
Described base plate 2 is loaded in described framework 1, by friction rabbling welding, base plate 2 is welded on framework 1;
The profile of described Battery case 100 is corrected;
By electrophoresis processing, surface treatment and application are carried out to described Battery case 100.
When manufacturing the Battery case of same vehicle, present embodiment has following progress relative to the sheet metal box body that usual manner is produced:
1, lightweight: the box weight of present embodiment manufacture is 32kg, and sheet metal box body is about 60kg;
2, high leakproofness: the casing of present embodiment manufacture has more than IP67 degree of protection, and sheet metal box body then only has IP56 degree of protection;
3, high strength: at XY direction 1.5G, under the vibration-testing environment of Z-direction 3G, frequency 300Hz, the casing that present embodiment manufactures is without fracture after 8 hours, and sheet metal box body ruptured after 4 hours;
4, work simplification: eliminate frame welding and these 2 links that may produce compared with high tolerance of bending, effectively improve Product Precision and consistency, avoid the framework torsional deformation of sheet metal component, production mechanization degree is high;
5, cost reduces: produce the every platform cost price of Battery case lower than sheet metal box body about 20% by method of the present invention.
Above test data of experiment all comes from the inspection center of national authentication.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a manufacture method for the lightweight battery casing of electric automobile, is characterized in that, described Battery case comprises framework and base plate, and its manufacturing step comprises:
Employing cast aluminium 102 is the cast raw material of described framework, by the blank of gravitational casting shaping frame;
By described framework clamping in Digit Control Machine Tool, installed surface is processed and bores or attack hole;
Described base plate is loaded in described framework, by friction rabbling welding, base plate is welded on framework;
The profile of described Battery case is corrected;
By electrophoresis processing, surface treatment and application are carried out to described Battery case.
2. the manufacture method of the lightweight battery casing of electric automobile according to claim 1, is characterized in that: be at least 6 millimeters by the wall thickness of the described framework of gravitational casting type casting moulding.
3. the manufacture method of the lightweight battery casing of electric automobile according to claim 1, is characterized in that: by described Battery case clamping after Digit Control Machine Tool, just by clamped one time can be processed all installed surfaces and bore or attack hole.
4. the manufacture method of the lightweight battery casing of electric automobile according to claim 1, is characterized in that: the material of described base plate is aircraft aluminum.
5. the manufacture method of the lightweight battery casing of electric automobile according to claim 4, is characterized in that: the thickness of described base plate is 2 ~ 3 millimeters.
6. a lightweight battery casing for electric automobile, is characterized in that, described Battery case comprises framework and is fixed on the base plate on framework, and the manufacture method of this Battery case is the manufacture method described in claim 1 to 5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310288794.1A CN103367670B (en) | 2013-07-10 | 2013-07-10 | Lightweight battery box body for electric automobile and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310288794.1A CN103367670B (en) | 2013-07-10 | 2013-07-10 | Lightweight battery box body for electric automobile and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103367670A CN103367670A (en) | 2013-10-23 |
| CN103367670B true CN103367670B (en) | 2015-07-15 |
Family
ID=49368570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310288794.1A Expired - Fee Related CN103367670B (en) | 2013-07-10 | 2013-07-10 | Lightweight battery box body for electric automobile and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103367670B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694841B (en) * | 2016-12-30 | 2019-04-02 | 广州汽车集团股份有限公司 | A kind of manufacturing method of the battery pack housing of new-energy automobile and corresponding battery pack housing |
| CN106784505A (en) * | 2017-02-24 | 2017-05-31 | 天津锐新昌轻合金股份有限公司 | A kind of new-energy automobile aluminum alloy battery casing and preparation method thereof |
| DE102017105831C5 (en) * | 2017-03-17 | 2024-02-22 | Benteler Automobiltechnik Gmbh | Battery carrier for a vehicle |
| CN108630843B (en) | 2017-03-23 | 2023-10-24 | 宁德时代新能源科技股份有限公司 | Battery pack protection frame and battery pack |
| CN107350454A (en) * | 2017-06-19 | 2017-11-17 | 扬州兴福果机电科技有限公司 | A kind of manufacture method of the Battery case of electric automobile |
| CN108539078A (en) * | 2018-05-25 | 2018-09-14 | 铜陵市优车科技有限公司 | Battery case and its electric vehicle |
| CN117712586A (en) * | 2018-06-25 | 2024-03-15 | 麦格纳国际公司 | Battery frame |
| CN108649163A (en) * | 2018-07-19 | 2018-10-12 | 重庆博奥镁铝金属制造有限公司 | A kind of new energy car battery case |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862930A (en) * | 2010-07-26 | 2010-10-20 | 天津锐新电子热传技术股份有限公司 | Welding fixture tool of aluminum alloy battery tank body for electric automobile |
| CN202332978U (en) * | 2011-05-25 | 2012-07-11 | 天津科斯特汽车技术有限责任公司 | Power battery pack housing for electric vehicle |
| CN102576916A (en) * | 2009-09-10 | 2012-07-11 | 贝洱两合公司 | Method for producing an energy store holder for a vehicle |
-
2013
- 2013-07-10 CN CN201310288794.1A patent/CN103367670B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102576916A (en) * | 2009-09-10 | 2012-07-11 | 贝洱两合公司 | Method for producing an energy store holder for a vehicle |
| CN101862930A (en) * | 2010-07-26 | 2010-10-20 | 天津锐新电子热传技术股份有限公司 | Welding fixture tool of aluminum alloy battery tank body for electric automobile |
| CN202332978U (en) * | 2011-05-25 | 2012-07-11 | 天津科斯特汽车技术有限责任公司 | Power battery pack housing for electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103367670A (en) | 2013-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103367670B (en) | Lightweight battery box body for electric automobile and manufacture method thereof | |
| CN106694841B (en) | A kind of manufacturing method of the battery pack housing of new-energy automobile and corresponding battery pack housing | |
| CN104551422B (en) | The welding procedure of large-scale magnesium alloy expanding table top | |
| CN103337601B (en) | The Battery case of electric automobile and manufacture method thereof | |
| CN106216968A (en) | Dual-gripper air vane enclosing cover and the processing method of wheel disc | |
| CN103831579A (en) | Machining method of complex casting with non-circular cross section | |
| CN108044284B (en) | Preset reverse deformation tooling for welding side wall door upright post of railway vehicle and method thereof | |
| CN108188630A (en) | A kind of automobile longitudinal girder welding fixture and its manufacturing method | |
| CN205290238U (en) | Electric car body skirtboard welding jig | |
| CN206912561U (en) | A kind of thin plate butt welding tooling fixture device | |
| CN208179353U (en) | Headstock skirtboard installs positioning tool | |
| CN103624393A (en) | Rigidity restraint hot self-extruding connection method | |
| CN201575127U (en) | Improved novel gear | |
| CN206779943U (en) | A kind of special fixture of processing equipment hand | |
| CN110961868A (en) | Processing method of new energy battery box with water cooling function for passenger car | |
| CN110877190A (en) | Machining process for large-section short single-box multi-chamber steel tower end face machine | |
| CN105834675A (en) | Processing technology of auger main frame | |
| CN204817618U (en) | Electricity liquid bender workstation hydraulic pressure compensation arrangement | |
| CN207971647U (en) | Car white vehicle vehicle body manufactures experimently shutter member fixtures for rapid assembly | |
| CN203830974U (en) | Tool structure for welding steel plates to outer wall of cylinder | |
| CN106321579A (en) | Three-way joint for aluminium materials and machining method thereof | |
| CN216000207U (en) | Back door loading control tool | |
| CN101116884A (en) | Clamp-shaped rivet jointing method | |
| CN210633156U (en) | Be applicable to diversified mounting structure that unites of X/C type robot spot welding rifle | |
| Liu et al. | Hybrid Position/Force Control for Dual‐Machine Drilling and Riveting System |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: HUBEI HAOTIAN NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XIANGYANG HUINENGTONG AUTOMOBILE TECHNOLOGY CO., LTD. Effective date: 20150409 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 441003 XIANGFAN, HUBEI PROVINCE TO: 441004 XIANGFAN, HUBEI PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20150409 Address after: 441004 Hubei city of Xiangyang province high tech Zone Jia Hai Industrial Park No. A50-2 Applicant after: HUBEI HAONENG NEW ENERGY Co.,Ltd. Address before: 441003 Hubei high tech Zone in Xiangfan City, Beverly Boulevard Dongjia Hai Industrial Park B32-2 Applicant before: XIANGYANG HUINENGTONG AUTOMOTIVE TECHNOLOGY Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170817 Address after: 441000 new road, automobile industry zone, hi tech Zone, Hubei, Xiangyang Patentee after: Hubei Hao Tianbo Electrical Technology Co.,Ltd. Address before: 441004 Hubei city of Xiangyang province high tech Zone Jia Hai Industrial Park No. A50-2 Patentee before: HUBEI HAONENG NEW ENERGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 |