CN202817141U - Electric vehicle - Google Patents
Electric vehicle Download PDFInfo
- Publication number
- CN202817141U CN202817141U CN2012204646283U CN201220464628U CN202817141U CN 202817141 U CN202817141 U CN 202817141U CN 2012204646283 U CN2012204646283 U CN 2012204646283U CN 201220464628 U CN201220464628 U CN 201220464628U CN 202817141 U CN202817141 U CN 202817141U
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- Prior art keywords
- electric automobile
- conductive liquid
- insulating heat
- air
- heat exchanger
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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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- Electric Propulsion And Braking For Vehicles (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model discloses an electric vehicle, comprising a battery pack, wherein the battery pack comprises a shell and a plurality of individual batteries arranged in the shell; insulating heat conductive liquid is poured into the shell; the shell is provided with an outlet and an inlet; the insulating heat conductive liquid can pass through the outlet and return to the inlet after passing through an external cooling device; and a pump for driving the insulating heat conductive liquid to flow is arranged between the outlet and the inlet. According to the electric vehicle, the insulating heat conductive liquid is poured into the battery shell, so the electrolytic solution is isolated from the air in case that the gas expansion or liquid leakage occurs on the individual batteries, in order to prevent combustion and explosion; the insulating heat conductive liquid can absorb heat energy of the individual batteries; an external circulating passage is arranged for the insulating heat conductive liquid, so the circulated insulating heat conductive liquid can be rapidly cooled down by the external cooling device on the external circulating passage. Therefore, the entire battery pack has the characteristics of being excellent in cooling effect and safer, and the safety of the electric vehicle is improved as well.
Description
[technical field]
The utility model relates to a kind of electric automobile, especially, relates to a kind of electric automobile with power brick external refrigeration system.
[background technology]
Along with petroleum resources day by day reduce and the pollution of environment day by day serious, protection of the environment, energy-saving and emission-reduction have become present trend and trend in the world.Under this background, in recent years, take battery as main power source or the motor vehicle of partial power source (mainly comprise hybrid vehicle, plug-in hybrid electric vehicle, engender and increasing that pure electric vehicle) the carbon emission amount of motor vehicle is less than the traditional combustion engine automobile, the carbon emission of pure electric vehicle even be zero, and have the high characteristics of energy conversion efficiency, this is so that people are considered as electric automobile an important selection of following replace internal combustion engines car.
The power of present electric automobile is mainly selected the lithium ion battery bag, and the lithium ion battery bag is made of a plurality of lithium-ion battery monomers, and the energy that present batteries of electric automobile bag stores is generally all larger, and particularly pure electric vehicle is all the more so.For example: for common family expenses pure electric automobile, such as daily output " LEAF " (daily output " listening wind "), its lithium ion battery bag energy storage 24kWh.And for more large-scale pure electric vehicle, pure electric bus for example, its power brick energy storage even can reach 300～400kWh generally more than 200kWh.
For the power brick of large-scale pure electric vehicle, especially lithium ion battery bag, mainly adopt at present soft bag lithium ionic cell monomer composition power brick, thisly be designed with following problem, at first, the Cooling Design of whole power brick is a difficult problem, present way has air-cooled and two kinds of main ways of liquid cooling, for air-cooled, that the air-flow that utilizes vehicle to take up when advancing comes the cool batteries bag, air-cooled design is cheap, but effect is relatively poor, and is special all the more so when summer, air themperature was higher; For liquid cooling, it generally is the cooling liquid pipeline that in power brick, is provided with around battery, cooling fluid flows through pipeline and cools off at pipeline battery on every side, the effect of liquid cooling generally is better than air-cooled, but its difficult design is expensive, and after cooling fluid has absorbed enough heats, cooling fluid in the unpromising heating in power brick outside is provided with cooling device specially, perhaps external refrigeration device too simple (adopting air-cooled fin such as only being).Can cause like this after using the long period, cooling fluid is heating, but but can not fall dissipation of heat in the power brick outside soon, thereby causes the cooling effect variation.Secondly, soft bag lithium ionic cell generates heat in the process of using, and produces easily flatulence, electrolyte and the phenomenon such as overflows, and can burn behind the electrolyte ingress of air that overflows, even cause exploding.
[utility model content]
The electric automobile that the purpose of this utility model provides a kind of power brick simplicity of design, good cooling results is large-scale pure electric automobile particularly.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of electric automobile, it comprises power brick, power brick comprises housing and places the interior a plurality of battery cells of housing, in housing, be perfused with insulating heat-conductive liquid, offer outlet and entrance at housing, insulating heat-conductive liquid can be by outlet via returning entrance behind the external refrigeration device, between outlet and entrance, be provided with for the pump that drives the insulating heat-conductive liquid flow, the external refrigeration device comprises two fluid paths, flow through the cooling liquid for cooling insulating heat-conductive liquid in the fluid path therein, insulating heat-conductive liquid flows through another fluid path.
As preferred technical scheme: described insulating heat-conductive liquid comprises any one in silicone oil or the fire resistant oil.
As preferred technical scheme: described electric automobile also comprises air-conditioning, described external refrigeration device comprises plate heat exchanger, described insulating heat-conductive liquid flows through described plate heat exchanger one paths, and described air conditioner liquid coolant flows through another paths of described plate heat exchanger.
As preferred technical scheme: described electric automobile also comprises air-conditioning, described external refrigeration device comprises double pipe heat exchanger, described insulating heat-conductive liquid flows through described double pipe heat exchanger one paths, and described air conditioner liquid coolant flows through another paths of described double pipe heat exchanger.
As preferred technical scheme: described electric automobile also comprises air-conditioning, described external refrigeration device comprises tubular heat exchanger, described insulating heat-conductive liquid flows through described tubular heat exchanger one paths, and described air conditioner liquid coolant flows through another paths of described tubular heat exchanger.
As preferred technical scheme: described external refrigeration device also comprises fin, and described insulating heat-conductive liquid also flows through described fin.
As preferred technical scheme: described fin is arranged at the top of described electric automobile.
As preferred technical scheme: described electric automobile comprises air-conditioning, and described air-conditioner air outlet connects the two-way wind path, and wherein a transportation work style road is connected with the compartment of electric automobile, and another transportation work style road blows to fin.
As preferred technical scheme: described air-conditioning is by motor driven independently.
As preferred technical scheme: described air-conditioning is driven by power brick.
The technical solution of the utility model has the following advantages: by at battery case perfusion in vivo insulating heat-conductive liquid, so that in the time of battery cell generation flatulence or leakage, electrolyte and air are isolated, can not burn, explode; Itself can absorb the heat of battery cell insulating heat-conductive liquid, and for insulating heat-conductive liquid is provided with external circulation passage, circulation insulating heat-conductive liquid out can be arranged on the external refrigeration device cooling on the external circulation passage soon.Thereby so that whole power brick has good cooling results, safer characteristics.
The external refrigeration device can be simple fin, dispels the heat by air-cooled, also fin can be arranged on vehicle roof, and the vehicle roof speed air flow is relatively very fast, thereby so that can dispel the heat better.In the electric automobile air-conditioning can also be set, adopt air-conditioner wind to come cold sink.Can be so that radiating effect be better.
Air-conditioning can adopt power brick to drive, but can relatively affect like this flying power of vehicle, so can adopting independently, put-put drives air-conditioning.
The external refrigeration device can comprise industrial common plate heat exchanger, double pipe heat exchanger and split pipe heat exchanger, can so that insulating heat-conductive liquid in these heat exchangers and the cooling fluid of air-conditioning carry out exchange heat, good cooling results.The external refrigeration device can also comprise common fin, and common fin can carry out with above-mentioned various heat exchangers series connection or the parallel connection of insulating heat-conductive liquid fluid, all can play the effect of further heat radiation.
[description of drawings]
Fig. 1 is the schematic diagram of the utility model one embodiment;
Fig. 2 is the schematic diagram of another embodiment of the utility model;
Fig. 3 is the a-quadrant enlarged drawing among Fig. 2;
Fig. 4 is the schematic diagram of another embodiment of the utility model;
Wherein: 1. power brick; 2. housing; 3. insulating heat-conductive liquid; 4. outlet; 5. entrance; 6. fin; 7. pump; 8. air-conditioning; 9. compressor of air conditioner; 11. battery cell; 12. plate heat exchanger; 91. air conditioner liquid coolant outlet; 92. air conditioner liquid coolant entrance; F1. insulating heat-conductive liquid flows; F2. air conditioner liquid coolant liquid flows.
[embodiment]
Embodiment 1:
As schematically shown in Figure 1: a kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with silicone oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the fin 6, be provided with the pump 7 that flows be used to driving described silicone oil between described outlet 4 and entrance 5.
Embodiment 2:
1. electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with silicone oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the fin 6, be provided with the pump 7 that flows be used to driving described silicone oil between described outlet 4 and entrance 5.
Described fin 6 is arranged on the top of electric automobile.
Embodiment 3:
A kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with silicone oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the fin 6, be provided with the pump 7 that flows be used to driving described silicone oil between described outlet 4 and entrance 5.
Described electric automobile also comprises air-conditioning, and air-conditioning is driven by power brick 1 supply electric power, and air-conditioner air outlet connects the two-way wind path, and wherein a transportation work style road is connected with the compartment of electric automobile, and another transportation work style road blows to fin 6.
Embodiment 4:
A kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with silicone oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the fin 6, be provided with the pump 7 that flows be used to driving described silicone oil between described outlet 4 and entrance 5.
Described electric automobile also comprises air-conditioning, and air-conditioning is driven by 4.5 horsepowers of single-cylinder engines independently, and air-conditioner air outlet connects the two-way wind path, and wherein a transportation work style road is connected with the compartment of electric automobile, and another transportation work style road blows to fin 6.
Embodiment 5:
As schematically shown in Figure 2: a kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with silicone oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the external refrigeration device, be provided with the pump 7 that flows be used to driving described silicone oil 3 between described outlet 4 and entrance 5.
Described electric automobile also comprises air-conditioning 8, drive compressor of air conditioner 9 by 4.5 horsepowers of single-cylinder engines independently, described external refrigeration device is plate heat exchanger 12, described silicone oil flows through a paths of described plate heat exchanger 12, and described air conditioner liquid coolant flows through another paths of described plate heat exchanger 12.
Fig. 3 is the a-quadrant enlarged drawing among Fig. 2, can find out, in plate heat exchanger 12, silicone fluid F1 flows to the right side from the left side, air conditioner liquid coolant fluid F 2 flows to the left side from the right side, both carry out sufficient heat exchange by the blade of plate heat exchanger 12, thereby so that silicone oil promptly cool off.
Embodiment 6:
A kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with fire resistant oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the external refrigeration device, be provided with the pump 7 that flows be used to driving described fire resistant oil 3 between described outlet 4 and entrance 5.
Described electric automobile also comprises air-conditioning 8, power to drive compressor of air conditioner 9 by power brick 1 to air-conditioning 8, described external refrigeration device is double pipe heat exchanger 12, described silicone oil flows through a paths of described double pipe heat exchanger 12, and described air conditioner liquid coolant flows through another paths of described double pipe heat exchanger 12.
Embodiment 7:
A kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with fire resistant oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the external refrigeration device, be provided with the pump 7 that flows be used to driving described fire resistant oil 3 between described outlet 4 and entrance 5.
Described electric automobile also comprises air-conditioning 8, power to drive compressor of air conditioner 9 by power brick 1 to air-conditioning 8, described external refrigeration device is tubular heat exchanger 12, described silicone oil flows through a paths of described tubular heat exchanger 12, and described air conditioner liquid coolant flows through another paths of described tubular heat exchanger 12.
Embodiment 8:
As schematically shown in Figure 4: a kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with silicone oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the external refrigeration device, be provided with the pump 7 that flows be used to driving described silicone oil 3 between described outlet 4 and entrance 5.
Described electric automobile also comprises air-conditioning 8, drive compressor of air conditioner 9 by 4.5 horsepowers of single-cylinder engines independently, described external refrigeration device comprises plate heat exchanger 12 and fin 6, flow path with silicone oil 3, plate heat exchanger and dispel the heat between 6 and to be series relationship, described silicone oil 3 first-selections flow through a paths of described plate heat exchanger 12, and described air conditioner liquid coolant flows through another paths of described plate heat exchanger 12.Behind plate heat exchanger, silicone oil 3 flows through fin 6 again and further dispels the heat.
Embodiment 9:
A kind of electric automobile, it comprises power brick 1, described power brick 1 comprises housing 2 and a plurality of battery cells 11 that place in the described housing 1, in described housing 1, be perfused with silicone oil 3, offer outlet 4 and entrance 5 at housing 1, described silicone oil can by exporting 4 via returning entrance 5 behind the external refrigeration device, be provided with the pump 7 that flows be used to driving described silicone oil 3 between described outlet 4 and entrance 5.
Described electric automobile also comprises air-conditioning 8, drive compressor of air conditioner 9 by 5 horsepowers of single-cylinder engines independently, described external refrigeration device comprises double pipe heat exchanger 12 and fin 6, flow path with silicone oil 3, plate heat exchanger and dispel the heat between 6 and to be relation in parallel, after exporting 4 outflows, a part of silicone oil 3 flows through a paths of described shell type heat exchanger 12, and another part silicone oil 3 flows through described fin.Described air conditioner liquid coolant flows through another paths of described plate heat exchanger 12.Two-way silicone oil is pooled at last entrance 5 and flows in the power brick.
Protection range of the present utility model is not limited in above-described embodiment, and all variations of doing under the utility model spirit and change all should drop within the utility model protection range.
Claims (15)
1. electric automobile, it comprises power brick, it is characterized in that: described power brick comprises housing and places the interior a plurality of battery cells of described housing, in described housing, be perfused with insulating heat-conductive liquid, offer outlet and entrance at housing, described insulating heat-conductive liquid can be by outlet via returning entrance behind the external refrigeration device, between described outlet and entrance, be provided be used to the pump that drives described insulating heat-conductive liquid flow, described external refrigeration device comprises two fluid paths, flow through the cooling liquid for cooling insulating heat-conductive liquid in the fluid path therein, described insulating heat-conductive liquid flows through another fluid path.
2. electric automobile as claimed in claim 1, it is characterized in that: described external refrigeration device comprises fin.
3. electric automobile as claimed in claim 1, it is characterized in that: described electric automobile also comprises air-conditioning, described external refrigeration device comprises plate heat exchanger, described insulating heat-conductive liquid flows through described plate heat exchanger one paths, and described air conditioner liquid coolant flows through another paths of described plate heat exchanger.
4. electric automobile as claimed in claim 1, it is characterized in that: described electric automobile also comprises air-conditioning, described external refrigeration device comprises double pipe heat exchanger, described insulating heat-conductive liquid flows through described double pipe heat exchanger one paths, and described air conditioner liquid coolant flows through another paths of described double pipe heat exchanger.
5. electric automobile as claimed in claim 1, it is characterized in that: described electric automobile also comprises air-conditioning, described external refrigeration device comprises tubular heat exchanger, described insulating heat-conductive liquid flows through described tubular heat exchanger one paths, and described air conditioner liquid coolant flows through another paths of described tubular heat exchanger.
6. electric automobile as claimed in claim 2, it is characterized in that: described fin is arranged on the top of described electric automobile.
7. electric automobile as claimed in claim 2, it is characterized in that: described electric automobile comprises air-conditioning, and described air-conditioner air outlet connects the two-way wind path, and wherein a transportation work style road is connected with the compartment of electric automobile, and another transportation work style road blows to fin.
8. such as arbitrary described electric automobile in claim 3 or 4 or 5, it is characterized in that: described external refrigeration device also comprises fin, and described insulating heat-conductive liquid also flows through described fin.
9. such as arbitrary described electric automobile in the claim 3～5, it is characterized in that: described air-conditioning is by motor driven independently.
10. such as arbitrary described electric automobile in the claim 3～5, it is characterized in that: described air-conditioning is driven by power brick.
11. electric automobile as claimed in claim 8 is characterized in that: described air-conditioning is by motor driven independently.
12. electric automobile as claimed in claim 8 is characterized in that: described air-conditioning is driven by power brick.
10. such as arbitrary described electric automobile in the claim 1～7, it is characterized in that: described insulating heat-conductive liquid comprises any one in silicone oil or the fire resistant oil.
11. electric automobile as claimed in claim 8 is characterized in that: described insulating heat-conductive liquid comprises any one in silicone oil or the fire resistant oil.
12. electric automobile as claimed in claim 9 is characterized in that: described insulating heat-conductive liquid comprises any one in silicone oil or the fire resistant oil.
13. electric automobile as claimed in claim 10 is characterized in that: described insulating heat-conductive liquid comprises any one in silicone oil or the fire resistant oil.
14. electric automobile as claimed in claim 11 is characterized in that: described insulating heat-conductive liquid comprises any one in silicone oil or the fire resistant oil.
15. electric automobile as claimed in claim 12 is characterized in that: described insulating heat-conductive liquid comprises any one in silicone oil or the fire resistant oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204646283U CN202817141U (en) | 2012-09-13 | 2012-09-13 | Electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204646283U CN202817141U (en) | 2012-09-13 | 2012-09-13 | Electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202817141U true CN202817141U (en) | 2013-03-20 |
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ID=47875966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204646283U Expired - Lifetime CN202817141U (en) | 2012-09-13 | 2012-09-13 | Electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN202817141U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682511A (en) * | 2012-09-13 | 2014-03-26 | 微宏动力***（湖州）有限公司 | Electric automobile |
| CN104993186A (en) * | 2015-06-29 | 2015-10-21 | 大连比克动力电池有限公司 | Battery module |
| CN105870365A (en) * | 2016-05-29 | 2016-08-17 | 合肥国轩高科动力能源有限公司 | Air cooling type battery pack |
| CN106992273A (en) * | 2016-09-21 | 2017-07-28 | 比亚迪股份有限公司 | Electrokinetic cell bag |
| US10164303B2 (en) | 2015-10-14 | 2018-12-25 | Ford Global Technologies, Llc | Traction battery thermal management systems and methods |
| JP2019093953A (en) * | 2017-11-24 | 2019-06-20 | トヨタ自動車株式会社 | Temperature control system of power storage device |
| CN112652836A (en) * | 2020-12-16 | 2021-04-13 | 杭州科技职业技术学院 | Special battery heat abstractor of new energy automobile |
| CN116279604A (en) * | 2023-05-19 | 2023-06-23 | 新乡市鼎盛散热器有限公司 | Inside and outside double-effect composite heat abstractor for railway vehicle |
-
2012
- 2012-09-13 CN CN2012204646283U patent/CN202817141U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682511A (en) * | 2012-09-13 | 2014-03-26 | 微宏动力***（湖州）有限公司 | Electric automobile |
| CN103682511B (en) * | 2012-09-13 | 2017-03-29 | 微宏动力***（湖州）有限公司 | Electric automobile |
| CN104993186A (en) * | 2015-06-29 | 2015-10-21 | 大连比克动力电池有限公司 | Battery module |
| US10164303B2 (en) | 2015-10-14 | 2018-12-25 | Ford Global Technologies, Llc | Traction battery thermal management systems and methods |
| CN105870365A (en) * | 2016-05-29 | 2016-08-17 | 合肥国轩高科动力能源有限公司 | Air cooling type battery pack |
| CN106992273A (en) * | 2016-09-21 | 2017-07-28 | 比亚迪股份有限公司 | Electrokinetic cell bag |
| CN106992273B (en) * | 2016-09-21 | 2018-09-11 | 比亚迪股份有限公司 | Power battery pack |
| US10916750B2 (en) | 2016-09-21 | 2021-02-09 | Byd Company Limited | Power battery pack |
| JP2019093953A (en) * | 2017-11-24 | 2019-06-20 | トヨタ自動車株式会社 | Temperature control system of power storage device |
| CN112652836A (en) * | 2020-12-16 | 2021-04-13 | 杭州科技职业技术学院 | Special battery heat abstractor of new energy automobile |
| CN116279604A (en) * | 2023-05-19 | 2023-06-23 | 新乡市鼎盛散热器有限公司 | Inside and outside double-effect composite heat abstractor for railway vehicle |
| CN116279604B (en) * | 2023-05-19 | 2023-07-21 | 新乡市鼎盛散热器有限公司 | Inside and outside double-effect composite heat abstractor for railway vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 313000 Huzhou economic and Technological Development Zone, Zhejiang, Hung Fung Road, No. 2198 Patentee after: MICROVAST POWER SYSTEMS Co.,Ltd. Address before: 313000 Zhejiang city of Huzhou province Huzhou City Road No. 1555 sunny Industrial Science and Technology Park 1 Patentee before: MICROVAST POWER SYSTEMS Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
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| CX01 | Expiry of patent term |