CN201754425U - Cooling device for power battery pack of electric vehicle - Google Patents
Cooling device for power battery pack of electric vehicle Download PDFInfo
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- CN201754425U CN201754425U CN2010201712937U CN201020171293U CN201754425U CN 201754425 U CN201754425 U CN 201754425U CN 2010201712937 U CN2010201712937 U CN 2010201712937U CN 201020171293 U CN201020171293 U CN 201020171293U CN 201754425 U CN201754425 U CN 201754425U
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- outer case
- internal box
- cooling device
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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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Abstract
The utility model discloses a cooling device for a power battery pack of an electric vehicle, which comprises a battery pack, a box body, an insulation bracket and a supporting bracket. A plurality of external exhaust outlets are arranged on an outer box body; the external exhaust outlets are distributed on two parallel side plates; a baffle valve for controlling air quantity is arranged on the outer box body; the baffle valve is located between an inner box body and the outer box body and is opposite to the external exhaust outlets; a plurality of air return inlets are arranged on the outer box body and are distributed on another two parallel side plates; the air return inlets are connected with an air return pipe of an air conditioning system; and an air valve for controlling the air quantity is arranged inside the air return pipe. A plurality of internal exhaust outlets are arranged on the outer surface at the upper part of a carriage, and are distributed at the lower end of the outer box body; and air outlet grids for controlling the air quantity are arranged in the internal exhaust outlets. The cooling device has compact structure; the heat radiation of the battery pack in the narrow area can be effectively achieved; meanwhile, three types of circulation can be realized according to different ambient air temperatures inside/outside the carriage, thereby reducing the load of the air conditioner and saving a great quantity of energy.
Description
Technical field
The utility model relates to a kind of accessory of electric automobile, relates in particular to a kind of electric automobile power battery group cooling device.
Background technology
Be accompanied by the development of electric vehicle engineering, create for the related invention of electric automobile power battery group cooling system and also day by day increase.Be to be main goal in research at present, all do not consider the electric automobile energy saving and effectively utilize with battery pack heat distribution uniformity about the research and development of electric automobile power battery group cooling system.The storage capacity of current battery is limited, in order to obtain longer continuation of the journey mileage, and just need be in many-sided energy savings.Existing electric automobile power battery group cooling system is when summer condition, and the Hot air quilt of discharging from electric automobile power battery group cooling system enters external environment condition.In fact, under the electric automobile normal operating condition, the heat dissipation capacity of battery is very little, and its hot air temperature still is lower than compartment ambient air outside temperature behind the air-conditioning air cooling battery.During winter condition, the gas temperature of discharging from pile cooling is higher than the compartment ambient temperature.Under these two kinds of operating modes, the gas of discharging from electric automobile power battery group cooling system all is directly to be discharged into the outside, compartment, never considers the cycling and reutilization of air-conditioning wind.
The utility model content
The purpose of this utility model is to provide a kind of electric automobile power battery group cooling device, this battery pack cooling device compact conformation, battery pack can access effective heat radiation in narrow and small zone, this battery pack cooling device can be according to three kinds of circulations of the different realization air-conditioning wind of interior and ambient temperature in addition, thereby reach the purpose of energy savings.
The utility model is achieved in that a kind of electric automobile power battery group cooling device, comprises battery pack, casing, is used for fixing the insulating support and the carriage of battery pack; Described casing comprises outer case and internal box, and internal box is sleeved on outer case inside, and described outer case and internal box are five cubes of body walls, and outer case and internal box all comprise two pairs of four blocks of side plates and top boards of being parallel to each other; Described outer case lower ending opening, the outer case openend is fixedlyed connected with the compartment outer surface of upper; Described internal box lower ending opening, internal box is sleeved on the insulating support, and constitute obturator with the insulating support base plate, have several air inlets on the described internal box, air inlet is arranged on two blocks of parallel side plates, described air inlet links to each other with the blast pipe of the outside air-conditioning system of casing, also has several air outlets on the internal box, and air outlet is arranged on other two blocks of parallel side plates; Be provided with the carriage that is used for fixing internal box between described outer case and the internal box, fixedly connected with the compartment outer surface of upper in the carriage lower end, fixedly connected with insulating support base plate lower end in the carriage upper end, leave the gap between described outer case and the internal box, the gap constitutes the air-out passage, have several outside exhaust outlets on the described outer case, outside exhaust outlet is arranged on two blocks of parallel side plates, the baffle valve that is used to control outside exhaust outlet air quantity is installed on the outer case, baffle valve is between internal box and outer case, and baffle valve is relative with outside exhaust outlet position; Have several return air inlets on the described outer case, return air inlet is arranged on other two blocks of parallel side plates, and return air inlet links to each other with the backwind tube of air-conditioning system, and backwind tube inside is provided with the air-valve that is used to control air quantity; Described compartment outer surface of upper has several inner exhaust outlets, and inner exhaust outlet is arranged in the outer case lower end, is provided with the air outlet grate that is used to control air quantity in the inner exhaust outlet.
The signal input part of described baffle valve, air-valve and air outlet grate links to each other with the signal output part of wind valve controller, and the signal input part of wind valve controller links to each other with the interior temperature sensor with the compartment external temperature sensor.
Have 4 outside exhaust outlets on the described outer case, outside exhaust outlet is arranged on two blocks of parallel side plates, 4 outside exhaust outlets lay respectively at 4 bights, outer case lower end, have 4 return air inlets on the described outer case, return air inlet is arranged on other two blocks of parallel side plates, and 4 return air inlets lay respectively at 4 bights, outer case lower end, and described compartment outer surface of upper has 4 inner exhaust outlets, inner exhaust outlet is arranged in the outer case lower end, and 4 inner exhaust outlets lay respectively at 4 bights, outer case lower end.
Have 2 air inlets on the described internal box.
Have 6 air outlets on the described internal box, respectively be distributed with 3 air outlets on two side plates.
The electronics ventilating fan that is used for the discharge of internal box gas is installed on the described internal box, and the electronics ventilating fan is between internal box and outer case, and the air intake vent of electronics ventilating fan is relative with the air outlet position of internal box.
Described battery surface is equipped with temperature sensor, temperature sensor links to each other with the temperature control unit input by holding wire, the output of temperature control unit links to each other with the input of electronics ventilating fan, and temperature control unit is controlled the unlatching of electronics ventilating fan or closed.
The utility model is compared with existing electric automobile power battery group cooling device, compact conformation, battery pack can access effective heat radiation in narrow and small zone, this battery pack cooling device can be realized three kinds of circulations according to the difference of inside and outside the ambient air temperature in compartment simultaneously.First kind of circulation: when the compartment external temperature sensor detects the compartment external temperature when higher, air-conditioning system is freezed, wind valve controller is closed baffle valve and air-valve simultaneously, open air outlet grate, after cold air cooled off battery pack, heated cold air still was lower than ambient air temperature, flow to inner top space, compartment by inner exhaust outlet, because the air-conditioning system return air inlet is in negative pressuren zone, thermal current flows back to air-conditioning system by the air-conditioning return air inlet under differential pressure action, continues circulation next time.Second kind of circulation: when the compartment external temperature sensor detects compartment external temperature mistake when moderate, air-conditioning system is in closed condition, wind valve controller is closed air outlet grate and air-valve simultaneously, open baffle valve, natural wind enters internal box by blast pipe, and after battery pack was cooled, heated air was discharged internal box by the electronics ventilating fan, and directly flow to the outside, compartment by outside exhaust outlet, do not influence the interior environment.The third circulation: when the compartment external temperature sensor detects the compartment external temperature when relatively low, air-conditioning system is carried out heat pump cycle, wind valve controller is closed air exhausting grille and baffle valve simultaneously, open air-valve, natural wind or air-conditioning wind enter internal box by air inlet, after battery pack is cooled off or heated, are discharged internal box by the electronics ventilating fan, thermal current is sent into interior after flowing to air-conditioning ajutage and the mixing of air-conditioning wind via backwind tube.The utility model has reduced air conditioner load by three kinds of circulations, has saved a large amount of energy.
Description of drawings
Fig. 1 is the part assembling drawing of the utility model electric automobile power battery group cooling device;
Fig. 2 opens its internal structure external structure schematic diagram of back for side plate of outer case of the utility model electric automobile power battery group cooling device;
Fig. 3 is the elevational schematic view of the utility model electric automobile power battery group cooling device;
Fig. 4 is the local enlarged diagram of backwind tube and air-valve;
Fig. 5 is top, a compartment elevational schematic view;
Among the figure: 1 battery pack, 2 outer case loam cakes, 3 electronics ventilating fans, 4 outside exhaust outlets, 5 backwind tubes, 6 internal box loam cakes, 7 carriages, 8 baffle valves, 9 air outlet grates, 10 insulating supports, 11 blast pipes, 12 air-valves, 13 air-conditioning return air inlets, 14 compartments.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1 to Fig. 4, a kind of electric automobile power battery group cooling device comprises battery pack 1, casing, is used for fixing the insulating support 10 and the carriage 7 of battery pack 1.Described battery pack 1 comprises a plurality of compact arranged element cells, and the broad side surface of element cell is provided with lug boss and depressed part, and the lug boss of adjacent-cell battery contacts with lug boss, forms the space that communicates up and down between depressed part and the depressed part.Described casing comprises outer case 2 and internal box 6, and internal box 6 is sleeved on outer case 2 inside, and described outer case 2 and internal box 5 are five cubes of body walls, and outer case 2 and internal box 6 all comprise two pairs of four blocks of side plates and top boards of being parallel to each other.Described outer case 2 lower ending openings, outer case 2 openends are fixedlyed connected with compartment 14 outer surface of upper.Described internal box 6 lower ending openings, internal box 6 is sleeved on the insulating support 10, and constitutes obturator with insulating support 10 base plates.Have 2 air inlets on the described internal box 6,2 air inlets are arranged on two blocks of parallel side plates, and described air inlet links to each other with the blast pipe 11 of the outside air-conditioning system of casing.Also have 6 air outlets on the internal box 6,6 air outlet horizontal arrangement respectively are distributed with 3 air outlets on two side plates on other two blocks of parallel side plates.The electronics ventilating fan 3 that is used for the discharge of internal box 6 gases is installed on the described internal box 6, and electronics ventilating fan 3 is between internal box 6 and outer case 2, and the air intake vent of electronics ventilating fan 3 is relative with the air outlet position of internal box 6.Being provided with the carriage 7 that is used for fixing internal box 6 between described outer case 2 and the internal box 6, fixedlys connected with compartment 14 outer surface of upper in carriage 7 lower ends, fixedlys connected with insulating support 10 base plate lower ends in carriage 7 upper ends.Leave the gap between described outer case 2 and the internal box 6, the gap constitutes the air-out passage.Have 4 outside exhaust outlets 4 on the described outer case 2, outside exhaust outlet 4 is arranged on two blocks of parallel side plates, 4 outside exhaust outlets 4 lay respectively at 4 bights, outer case 2 lower ends, the baffle valve 8 that is used to control outside exhaust outlet 4 air quantity is installed on the outer case 2, baffle valve 8 is between internal box 6 and outer case 2, and baffle valve 8 is relative with outside exhaust outlet 4 positions.Have 4 return air inlets on the described outer case 2, return air inlet is arranged on other two blocks of parallel side plates, 4 return air inlets lay respectively at 4 bights, outer case 2 lower ends, and return air inlet links to each other with the backwind tube 5 of air-conditioning system, and backwind tube 5 inside are provided with the air-valve 12 that is used to control air quantity.Described compartment 14 outer surface of upper have 4 inner exhaust outlets, and inner exhaust outlet is arranged in outer case 2 lower ends, and 4 inner exhaust outlets lay respectively at 4 bights, outer case 2 lower ends, are provided with the air outlet grate 9 that is used to control air quantity in the inner exhaust outlet.
The signal input part of baffle valve 8, air-valve 12 and air outlet grate 9 links to each other with the signal output part of wind valve controller, and the signal input part of wind valve controller links to each other with compartment 14 internal temperature sensors with compartment 14 external temperature sensors.
Battery pack 1 mounted on surface has temperature sensor, temperature sensor links to each other with the temperature control unit input by holding wire, the output of temperature control unit links to each other with the input of electronics ventilating fan 3, and temperature control unit is controlled the unlatching of electronics ventilating fan 3 or closed.
The utility model is work like this:
(1) detects compartment 14 external temperatures when higher when compartment 14 external temperature sensors, as in summer, air-conditioning system is carried out kind of refrigeration cycle, wind valve controller is closed baffle valve 8 and air-valve 12 simultaneously, open air outlet grate 9, the cold air that air-conditioning system provides flows into internal box 6 by blast pipe 11, after battery pack 1 cooled off, heated cold air still is lower than ambient air temperature, discharge internal box 6 by electronics ventilating fan 3, and flow to 14 inner top spaces, compartment by inner exhaust outlet, because the air-conditioning system return air inlet is in negative pressuren zone, simultaneously, inner exhaust outlet is nearer apart from air-conditioning return air inlet 13, thermal current flows back to air-conditioning system by air-conditioning return air inlet 13 under differential pressure action, continue circulation next time, and the flow direction of air-flow is referring to direction shown in the arrow among Fig. 5 in the compartment 14.
(2) detect compartment 14 external temperatures when moderate when compartment 14 external temperature sensors, as transition season, air-conditioning system is in closed condition, and wind valve controller is closed air outlet grate 9 and air-valve 12 simultaneously, opens baffle valve 8.Natural wind enters internal box 6 by blast pipe 11, and after battery pack 1 was cooled, heated air was discharged internal box 6 by electronics ventilating fan 3, and directly flows to 14 outsides, compartment by outside exhaust outlet 4, does not influence environment inside car.
(3) detect compartment 14 external temperatures when relatively low when compartment 14 external temperature sensors, as in the winter time, air-conditioning system is carried out heat pump cycle, wind valve controller is closed air exhausting grille and baffle valve 8 simultaneously, opens air-valve 12, and natural wind or air-conditioning wind enter internal box 6 by air inlet, after battery pack 1 cooled off or heat, discharged internal box 6 by electronics ventilating fan 3, thermal current is sent into 14 inside, compartment after flowing to air-conditioning ajutage and the mixing of air-conditioning wind via backwind tube 5.
The foregoing description is only for the usefulness that the utility model is described, and be not to be to restriction of the present utility model, the those of ordinary skill in relevant technologies field, do not breaking away under the situation of the present utility model, can also make various variations and modification, therefore, all technical schemes that are equal to also should belong to category of the present utility model.
Claims (7)
1. electric automobile power battery group cooling device comprises battery pack (1), casing, is used for fixing the insulating support (10) and the carriage (7) of battery pack (1);
Described casing comprises outer case (2) and internal box (6), internal box (6) is sleeved on outer case (2) inside, described outer case (2) and internal box (5) are five cubes of body walls, and outer case (2) and internal box (6) all comprise two pairs of four blocks of side plates and top boards of being parallel to each other;
Described outer case (2) lower ending opening, outer case (2) openend is fixedlyed connected with compartment (14) outer surface of upper;
Described internal box (6) lower ending opening, internal box (6) is sleeved on the insulating support (10), and constitute obturator with insulating support (10) base plate, described internal box has several air inlets on (6), air inlet is arranged on two blocks of parallel side plates, described air inlet links to each other with the blast pipe (11) of the outside air-conditioning system of casing, and internal box also has several air outlets on (6), and air outlet is arranged on other two blocks of parallel side plates;
Be provided with the carriage (7) that is used for fixing internal box (6) between described outer case (2) and the internal box (6), fixedly connected with compartment (14) outer surface of upper in carriage (7) lower end, fixedly connected with insulating support (10) base plate lower end in carriage (7) upper end, leave the gap between described outer case (2) and the internal box (6), the gap constitutes the air-out passage, it is characterized in that:
Have several outside exhaust outlets (4) on the described outer case (2), outside exhaust outlet (4) is arranged on two blocks of parallel side plates, the baffle valve (8) that is used to control outside exhaust outlet (4) air quantity is installed on the outer case (2), baffle valve (8) is positioned between internal box (6) and the outer case (2), and baffle valve (8) is relative with outside exhaust outlet (4) position;
Described outer case has several return air inlets on (2), and return air inlet is arranged on other two blocks of parallel side plates, and return air inlet links to each other with the backwind tube (5) of air-conditioning system, and backwind tube (5) inside is provided with the air-valve (12) that is used to control air quantity;
Described compartment (14) outer surface of upper has several inner exhaust outlets, and inner exhaust outlet is arranged in outer case (2) lower end, is provided with the air outlet grate (9) that is used to control air quantity in the inner exhaust outlet.
2. electric automobile power battery group cooling device according to claim 1, it is characterized in that: the signal input part of described baffle valve (8), air-valve (12) and air outlet grate (9) links to each other with the signal output part of wind valve controller, and the signal input part of wind valve controller links to each other with compartment (14) internal temperature sensor with compartment (14) external temperature sensor.
3. electric automobile power battery group cooling device according to claim 1, it is characterized in that: have 4 outside exhaust outlets (4) on the described outer case (2), outside exhaust outlet (4) is arranged on two blocks of parallel side plates, 4 outside exhaust outlets (4) lay respectively at 4 bights, outer case (2) lower end, have 4 return air inlets on the described outer case (2), return air inlet is arranged on other two blocks of parallel side plates, 4 return air inlets lay respectively at 4 bights, outer case (2) lower end, described compartment (14) outer surface of upper has 4 inner exhaust outlets, inner exhaust outlet is arranged in outer case (2) lower end, and 4 inner exhaust outlets lay respectively at 4 bights, outer case (2) lower end.
4. electric automobile power battery group cooling device according to claim 1 is characterized in that: have 2 air inlets on the described internal box (6).
5. electric automobile power battery group cooling device according to claim 1 is characterized in that: have 6 air outlets on the described internal box (6), respectively be distributed with 3 air outlets on two side plates.
6. electric automobile power battery group cooling device according to claim 1 or 5, it is characterized in that: the electronics ventilating fan (3) that is used for the discharge of internal box (6) gas is installed on the described internal box (6), electronics ventilating fan (3) is positioned between internal box (6) and the outer case (2), and the air intake vent of electronics ventilating fan (3) is relative with the air outlet position of internal box (6).
7. electric automobile power battery group cooling device according to claim 6, it is characterized in that: described battery pack (1) mounted on surface has temperature sensor, temperature sensor links to each other with the temperature control unit input by holding wire, the output of temperature control unit links to each other with the input of electronics ventilating fan (3), and temperature control unit is controlled the unlatching of electronics ventilating fan (3) or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201712937U CN201754425U (en) | 2010-04-27 | 2010-04-27 | Cooling device for power battery pack of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201712937U CN201754425U (en) | 2010-04-27 | 2010-04-27 | Cooling device for power battery pack of electric vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN201754425U true CN201754425U (en) | 2011-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201712937U Expired - Fee Related CN201754425U (en) | 2010-04-27 | 2010-04-27 | Cooling device for power battery pack of electric vehicle |
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| CN (1) | CN201754425U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340045A (en) * | 2011-09-28 | 2012-02-01 | 奇瑞汽车股份有限公司 | Cooling circulating system of power battery |
| CN102686087A (en) * | 2012-05-23 | 2012-09-19 | 山东电力集团公司 | Temperature adjusting and air guiding device and battery box with same |
| CN102723450A (en) * | 2012-05-25 | 2012-10-10 | 南京航空航天大学 | Automatic temperature control battery box of electric automobile |
| CN103490117A (en) * | 2013-09-26 | 2014-01-01 | 浙江吉利控股集团有限公司 | Battery pack cooling system of electric vehicle |
| CN103818213A (en) * | 2012-11-19 | 2014-05-28 | 上海汽车集团股份有限公司 | Method used for adjusting temperature of vehicle-mounted air conditioner power battery of electric or hybrid power vehicle |
| CN103921662A (en) * | 2013-01-10 | 2014-07-16 | 覃美莲 | Electric automobile constant temperature battery compartment |
| CN104300187A (en) * | 2014-09-23 | 2015-01-21 | 北京新能源汽车股份有限公司 | Power battery cooling system for electric vehicle and cooling method of power battery cooling system |
| CN105024021A (en) * | 2014-04-21 | 2015-11-04 | 北京普莱德新能源电池科技有限公司 | Parallel-type air-cooling battery box |
| CN107054109A (en) * | 2015-11-04 | 2017-08-18 | 福特全球技术公司 | Heat exchanger plate for electric vehicle battery group |
| CN109560215A (en) * | 2017-09-25 | 2019-04-02 | 宁德时代新能源科技股份有限公司 | Battery module |
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2010
- 2010-04-27 CN CN2010201712937U patent/CN201754425U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340045B (en) * | 2011-09-28 | 2016-05-11 | 奇瑞汽车股份有限公司 | A kind of cooling circulating system of power battery |
| CN102340045A (en) * | 2011-09-28 | 2012-02-01 | 奇瑞汽车股份有限公司 | Cooling circulating system of power battery |
| CN102686087B (en) * | 2012-05-23 | 2015-04-01 | 山东电力集团公司 | Temperature adjusting and air guiding device and battery box with same |
| CN102686087A (en) * | 2012-05-23 | 2012-09-19 | 山东电力集团公司 | Temperature adjusting and air guiding device and battery box with same |
| CN102723450A (en) * | 2012-05-25 | 2012-10-10 | 南京航空航天大学 | Automatic temperature control battery box of electric automobile |
| CN102723450B (en) * | 2012-05-25 | 2015-08-12 | 南京航空航天大学 | The automatic temperature-controlled battery case of electric automobile |
| CN103818213A (en) * | 2012-11-19 | 2014-05-28 | 上海汽车集团股份有限公司 | Method used for adjusting temperature of vehicle-mounted air conditioner power battery of electric or hybrid power vehicle |
| CN103818213B (en) * | 2012-11-19 | 2016-12-07 | 上海汽车集团股份有限公司 | For the method regulating the temperature of on-board air conditioner electrokinetic cell |
| CN103921662A (en) * | 2013-01-10 | 2014-07-16 | 覃美莲 | Electric automobile constant temperature battery compartment |
| CN103490117A (en) * | 2013-09-26 | 2014-01-01 | 浙江吉利控股集团有限公司 | Battery pack cooling system of electric vehicle |
| CN103490117B (en) * | 2013-09-26 | 2017-07-28 | 宁波吉利汽车研究开发有限公司 | The pile cooling of electric automobile |
| CN105024021A (en) * | 2014-04-21 | 2015-11-04 | 北京普莱德新能源电池科技有限公司 | Parallel-type air-cooling battery box |
| CN105024021B (en) * | 2014-04-21 | 2018-07-17 | 北京普莱德新能源电池科技有限公司 | A kind of parallel air-cooled battery case |
| CN104300187A (en) * | 2014-09-23 | 2015-01-21 | 北京新能源汽车股份有限公司 | Power battery cooling system for electric vehicle and cooling method of power battery cooling system |
| CN107054109A (en) * | 2015-11-04 | 2017-08-18 | 福特全球技术公司 | Heat exchanger plate for electric vehicle battery group |
| CN107054109B (en) * | 2015-11-04 | 2022-04-22 | 福特全球技术公司 | Heat exchanger plate for electric vehicle battery pack |
| CN109560215A (en) * | 2017-09-25 | 2019-04-02 | 宁德时代新能源科技股份有限公司 | Battery module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20110302 Termination date: 20190427 |