CN203503758U - Battery heat management system of electric automobile - Google Patents
Battery heat management system of electric automobile Download PDFInfo
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- CN203503758U CN203503758U CN201320645530.2U CN201320645530U CN203503758U CN 203503758 U CN203503758 U CN 203503758U CN 201320645530 U CN201320645530 U CN 201320645530U CN 203503758 U CN203503758 U CN 203503758U
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a battery heat management system of an electric automobile. A power distribution unit is installed between a battery charger and a battery, the temperature of the battery is detected before charging, if the temperature is low or high, a heating part or a cooling part needs to be started first, at the moment the power distribution unit does not distribute power to the battery, and the power is supplied when the temperature is proper. When the electric automobile is in the moving process, heat generated by a motor can be utilized for heating the battery. By utilizing the battery heat management system, electric energy of the battery can be not used or reduced in the charging and moving processes, and the utilization rate of the electric energy of the battery is increased.
Description
technical field
The utility model relates to electric automobile field, especially a kind of battery thermal management system of electric automobile.
Background technology
Since 21 century, various places automobile pollution rapidly increases, more and more higher to the demand of traditional non-renewable energy resources.Along with the development of auto industry and battery technology, electric automobile becomes one of this energy-intensive important development direction of solution undoubtedly.
Hinder the major reason that electric automobile promotes on a large scale and comprise, 1, performance, electric weight and the energy-conservation correlation technique of battery; 2, charging and correlation technique.The performance of battery and temperature have very large relation, while particularly charging, in cold winter, cannot give charging electric vehicle, and this just needs a kind of energy-conservation battery thermal management technology.And, heating of battery, cooling, the air-conditioning in electric automobile etc., all at consumes battery electric energy, restriction electric automobile continual mileage.Present stage, what most domestic producer adopted is all to carry out or heating cooling to battery with air.Because the specific heat capacity of air is smaller, heating or cooling rate are slow.If air humidity is large, also may make battery be short-circuited, cause immeasurable consequence.
Utility model content
The technical problems to be solved in the utility model has been to provide a kind of battery thermal management system of electric automobile, and energy when object is to make full use of energy that electric automobile formed or charging, saves battery power, improves the service efficiency of battery power.
The utility model provides a kind of battery thermal management system of electric automobile, comprise battery case 1, temperature sensor 14, entire car controller 13, heater block 4, liquid cools case 8, cooling fan 9, solenoid directional control valve 5, electromagnet cut off valve 6 and hydraulic pump 3, 10, temperature sensor 14 is arranged on battery case 1, cooling fan 9 is arranged on the outside of liquid cools case 8, be connected with entire car controller 13, wherein: liquid cools case 8 is outside equipped with two liquid outlets and an inlet, one of them liquid outlet is connected with the entrance of unidirectional valve 7, the outlet of unidirectional valve 7 is connected with one end of electromagnet cut off valve 6, the other end of electromagnet cut off valve 6 is connected with the inlet of heater block 4 and the D mouth of solenoid directional control valve 5 respectively, the outlet of heater block 4 is connected with one end of hydraulic pump 3, the other end of hydraulic pump 3 is connected with the inlet of battery case 1, the liquid outlet of battery case 1 is connected with the entrance of unidirectional valve 2, the outlet of unidirectional valve 2 is connected with the B mouth of solenoid directional control valve 5, liquid cools case 8 another liquid outlets are connected with one end of hydraulic pump 10, the other end of hydraulic pump 10 is connected with one end of the internal cooling pipeline of motor 11, one end of the internal cooling pipeline of motor 11 is connected with the entrance of unidirectional valve 12, the outlet of unidirectional valve 12 is connected with the A mouth of solenoid directional control valve 5, and the C mouth of solenoid directional control valve 5 is connected with the inlet of liquid cools case 8, temperature sensor 14, heater block 4, hydraulic pump 3,10, solenoid directional control valve 5, electromagnet cut off valve 6 are connected with entire car controller 13 respectively.
Further, before charging, if battery is carried out cooling, the B mouth of solenoid directional control valve 5 is communicated with C mouth, A mouth is communicated with C mouth, and cooling fan 9 is opened, and electromagnet cut off valve 6 is opened, and hydraulic pump 3 is opened, and closes heater block 4, hydraulic pump 10.
Further, before charging, if battery is heated, the B mouth of solenoid directional control valve 5 is communicated with D mouth, A mouth is communicated with C mouth, and electromagnet cut off valve 6, hydraulic pump 10, cooling fan 9 are closed, and hydraulic pump 3 is opened, and heater block 4 is opened.
Further, in electric automobile when operation,, if battery is heated, the A mouth of solenoid directional control valve 5 is communicated with D mouth, B mouth is communicated with C mouth, heater block 4 and hydraulic pump 3,10 unlatchings, and cooling fan 9, electromagnet cut off valve 6 are closed.
Further, in electric automobile when operation,, if battery and motor are carried out cooling, the A mouth of solenoid directional control valve 5 is communicated with C mouth, B mouth is communicated with C mouth, hydraulic pump 3,10 unlatchings, and cooling fan 9 unlatchings, electromagnet cut off valve 6 unlatchings, close heater block 4.
Compared with prior art, the battery thermal management system that the utility model provides, installation power allocation units between charger and battery, before charging, detect battery temperature, temperature is too low or too high, all will first start heater block or cooling-part, now power distributing unit is not given battery-allocated power, treats that temperature is suitable just to start power supply.In electric automobile traveling process, can utilize the heat that motor sheds is heating of battery.The battery thermal management system that the utility model provides, during charging and in traveling process, can not used or reduce the electric energy that uses battery, has improved the utilization ratio of battery power.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of battery thermal management system described in the utility model;
Fig. 2 is the structural representation of battery thermal management system described in the utility model;
Fig. 3 is power and the control circuit schematic diagram of the battery thermal management system described in the utility model Fig. 1.
In figure: 1, battery case; 2, unidirectional valve; 3, hydraulic pump; 4, heater block; 5, solenoid directional control valve; 6, electromagnet cut off valve; 7, unidirectional valve; 8, liquid cools case; 9, cooling fan; 10, hydraulic pump; 11, motor; 12, unidirectional valve; 13, entire car controller; 14, temperature sensor; 15, charger; 16, power distributing unit.
Embodiment
The heat that energy when the utility model is intended to make full use of charging electric vehicle and electric automobile shed while advancing, produces unnecessary electrochemistry loss to reduce electrical energy flows through battery.Before charging, battery thermal management system first detects the temperature of battery case, if temperature is too low or too high, starts that battery thermal management system heats battery case or cooling, and when equitemperature is suitable, power distributing unit just starts charging to battery.This battery thermal management system makes full use of the heat of electric automobile motor cooling fluid, is imported heating of battery system, and battery case is heated, and has saved the part electric energy of battery.
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Figure 1, the structured flowchart of the battery thermal management system of electric automobile, when charging, the battery thermal management system of electric automobile and entire car controller, and with the annexation of battery case, i.e. the input of the output termination power distributing unit 16 of charger 15, power distributing unit 16 has two outputs, one connects battery case 1, and another connects battery thermal management system.
As shown in Figure 2, the structural representation of battery thermal management system, battery thermal management system mainly comprises battery case 1, temperature sensor 14, entire car controller 13, heater block 4, liquid cools case 8, cooling fan 9, solenoid directional control valve 5, electromagnet cut off valve 6, for avoiding the unidirectional valve 2,7,12 of liquid backflow, with the hydraulic pump 3,10 circulating for maintaining battery thermal management system hydrodynamic, be full of the cooling fluid (being also the liquid in battery thermal management system) in battery case and the cooling pipeline of motor, with and connected wire harness and pipeline each other.
Wherein, there are three pipelines liquid cools case 8 outsides, article two, drain pipe,, a feed tube, article one, the liquid outlet of drain pipe is connected with the entrance of unidirectional valve 7, the outlet of unidirectional valve 7 is connected with one end of electromagnet cut off valve 6, the other end of electromagnet cut off valve 6 connects one end of heater block 4 and the D mouth of solenoid directional control valve 5, the other end of heater block 4 is connected with one end of hydraulic pump 3, the inlet of hydraulic pump 3 another termination battery cases 1, the liquid outlet of battery case 1 connects the entrance of unidirectional valve 2, and the outlet of unidirectional valve 2 connects the B mouth of solenoid directional control valve 5.
The liquid outlet of another drain pipe of liquid cools case 8 is connected with one end of hydraulic pump 10, the other end of hydraulic pump 10 is connected with one end of motor 11 internal cooling pipelines, the other end of motor 11 internal cooling pipelines connects the entrance of unidirectional valve 12, the outlet of unidirectional valve 12 connects the A mouth of solenoid directional control valve 5, and the C mouth of solenoid directional control valve 5 connects the inlet of liquid cools case 8.Cooling fan 9 is placed on the outside of liquid cools case 8, by entire car controller 13, control it to liquid cools case 8 quenchings, temperature sensor 14 output signals connect entire car controller 13, and hydraulic pump 3,10 and solenoid directional control valve 5, electromagnet cut off valve 6 are controlled by entire car controller 13 all.Sometimes need the cooling circulation of motor and battery case cool cycles to move, in order not make liquid backflow, spy add unidirectional valve 2,7,12 simultaneously.In native system, the cooling liquid of motor and battery case cooling fluid are same material.
The power of battery thermal management system and control circuit schematic diagram as shown in Figure 3, during charging, also have charger 15, power distributing unit 16 with battery thermal management system is used in conjunction with, the input of the output termination power distributing unit 16 of charger 15, power distributing unit 16 has two outputs, one connects battery case 1, and another connects battery thermal management system (comprising heater block, cooling fan, hydraulic pump etc.).Family expenses 220v electric energy is connected to power distributing unit 16 through charger 15, the both positive and negative polarity of battery case 1 connects the both positive and negative polarity of power distributing unit 16, heater block 4, cooling fan 9, hydraulic pump 3 and 10 are all connected on respectively on another both positive and negative polarity of power distributing unit 16, the temperature signal of temperature sensor 14 is passed to entire car controller 13, for entire car controller 13, judges whether to be started to charge the battery by power distributing unit 16.Heater block 4, cooling fan 9, hydraulic pump 3 and 10 control line are all connected to entire car controller.
When power distributing unit 16 can guarantee to charge, all energy are taken from charger, but not battery.And the power variable of charger, the various mode of operations while charging to adapt to.
Scene one: during charging, battery temperature is too high, needs cooling sight
Before charging, by the temperature sensor 14 of installing on battery case 1, temperature sensor 14 sends to entire car controller 13 by the temperature signal of battery case 1, entire car controller 13 is compared the preset value (as 25 ℃) of battery case temperature in the temperature signal of receiving and entire car controller 13, if battery case temperature is higher than preset value, open battery thermal management system, to battery, carry out cooling.After temperature is suitable, just by power distributing unit 16, to battery-allocated power, start charging, whether power distributing unit 16 gives battery-allocated power by vehicle control unit controls.During charging, motor 11 is not worked, and now, solenoid directional control valve 5 is in the normal state, and (AC is logical, BC is logical), entire car controller 13 controls heater block 4 and hydraulic pump 10 is not worked, and electromagnet cut off valve 6 is opened, cooling fan 9 work, the liquid of the battery of flowing through so has just obtained good cooling.Hydraulic path is: in liquid cools case 8, through the cooled liquid of cooling fan 9, by unidirectional valve 7, flow to electromagnet cut off valve 6, again through the heater block 4 in closed condition, by hydraulic pump 3, flow into battery case 1, battery case liquid outlet connects unidirectional valve 2, through the BC of solenoid directional control valve 5 mouth feed liquor body cooler bin 8.In this course, the power source of heater block 4 and hydraulic pump 10 is all from charger 15, but not battery reduces electrical energy flows and produces unnecessary electrochemistry loss, the useful life of having improved battery through battery.For preventing the inconsistent liquid backflow that causes of both sides pressure, spy adds unidirectional valve 2,12 in this circulation.
Scene two: during charging, battery temperature is too low, needs the sight heating
Before charging, by the temperature sensor 14 of installing on battery case 1, temperature sensor 14 sends to entire car controller 13 by the temperature signal of battery case 1, entire car controller 13 is compared the preset value (as 25 ℃) of battery case temperature in the temperature signal of receiving and entire car controller 13, if battery case temperature is lower than preset value, open battery thermal management system, battery is heated.After temperature is suitable, just by power distributing unit 16, to battery-allocated power, start charging, whether power distributing unit 16 gives battery-allocated power by vehicle control unit controls.During charging, motor 11 is not worked, and in order to make the efficiency of heating surface higher, the BD mouth that entire car controller 13 is controlled solenoid directional control valve 5 leads to, AC mouth is logical, and opens hydraulic pump 3 and heater block 4.Hydraulic path is now: the liquid outlet of battery case 1 connects unidirectional valve 2, flows into the heater block 4 of having opened, then enter battery case 1 through hydraulic pump 3 through the BD of solenoid directional control valve 5 mouth.So, the liquid after heating just, without liquid cools case (electromagnet cut off valve 6 is closed in this process, and cooling fan 9 is closed, and hydraulic pump 10 cuts out), has improved the efficiency of heating surface, has saved electric energy.Electric energy all in this process are all from external charging machine, but not battery reduces electrical energy flows and produces unnecessary electrochemistry loss, the useful life of having improved battery through battery.
Scene three: during electric automobile operation, the sight that battery need to heat
In electric automobile running, by the temperature sensor 14 of installing on battery case 1, temperature sensor 14 sends to entire car controller 13 by the temperature signal of battery case 1, entire car controller 13 is compared the preset value (as 25 ℃) of battery case temperature in the temperature signal of receiving and entire car controller 13, if battery case temperature is lower than preset value, open battery thermal management system, battery is heated.Entire car controller 13 controls heater block 4 and hydraulic pump 3,10 is opened, and cooling fan 9 and electromagnet cut off valve 6 are closed, and the AD mouth of controlling solenoid directional control valve 5 leads to, BC mouth is logical.Hydraulic path is: the cooling liquid of motor is through unidirectional valve 12, then by the AD mouth of solenoid directional control valve to heater block 4, then enter battery case 1 through hydraulic pump 3, battery case liquid outlet connects unidirectional valve 2, through the BC of solenoid directional control valve 5 mouth feed liquor body cooler bin 8, then enter motor through hydraulic pump 10.In this process by the importing battery case 1 of the cooling liquid of motor, just by the Btu utilization of the cooling liquid of motor get up, reduced the electric energy loss of battery, now because cooling fan 9 is closed, so not work of liquid cools case 8, and closing of electromagnet cut off valve 6 is also for balance stream pressure.Also have a bit, though motor does not need heating, the temperature of battery cooling fluid is not high here, very suitable motor work yet.
Scene four: during electric automobile operation, battery and motor all need cooling sight
In electric automobile when operation,, battery case 1 and motor 11 need when cooling, and the A mouth of solenoid directional control valve 5 is communicated with C mouth, B mouth is communicated with C mouth, open the hydraulic pump 3,10 that maintains its power cycle simultaneously, make liquid enter cooler bin 8, open electromagnet cut off valve 6, and open cooling fan 9, make it cooling.Hydraulic path is: for battery, the liquid outlet of battery case 1 connects unidirectional valve 2, through the BC of solenoid directional control valve 5 mouth, enter liquid cools case 8, the liquid outlet of liquid cools case 8 is connected to the heater block 4 in closed condition through unidirectional valve 7 and electromagnet cut off valve 6, then flows back to battery case 1 through hydraulic pump 3; For motor, the liquid outlet of motor 1 connects unidirectional valve 12, through the AC of solenoid directional control valve 5 mouth feed liquor body cooler bin 8, then flows back to motor 1 through hydraulic pump 10.
The battery thermal management system that the utility model provides, installation power allocation units between charger and battery, before charging, detect battery temperature, temperature is too low or too high, all will first start heater block or cooling-part, now power distributing unit is not given battery-allocated power, treats that temperature is suitable just to start power supply.In electric automobile traveling process, can utilize the heat that motor sheds is heating of battery.The battery thermal management system that the utility model provides, during charging and in traveling process, can not used or reduce the electric energy that uses battery, has improved the utilization ratio of battery power.
Above-mentioned various scene is only preferably execution mode of the utility model, not the utility model is done to any pro forma restriction, and protection range of the present utility model is not limited to this.Anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, within making various distortion, supplement or replace and all belonging to protection range of the present utility model.
Claims (5)
1. the battery thermal management system of an electric automobile, comprise battery case (1), temperature sensor (14), entire car controller (13), heater block (4), liquid cools case (8), cooling fan (9), solenoid directional control valve (5), electromagnet cut off valve (6) and hydraulic pump (3, 10), temperature sensor (14) is arranged on battery case (1) inside, cooling fan (9) is arranged on the outside of liquid cools case (8), be connected with entire car controller (13), it is characterized in that: liquid cools case (8) is outside equipped with two liquid outlets and an inlet, one of them liquid outlet is connected with the entrance of unidirectional valve (7), the outlet of unidirectional valve (7) is connected with one end of electromagnet cut off valve (6), the other end of electromagnet cut off valve (6) is connected with the D mouth of solenoid directional control valve (5) with the inlet of heater block (4) respectively, the outlet of heater block (4) is connected with one end of hydraulic pump (3), the other end of hydraulic pump (3) is connected with the inlet of battery case (1), the liquid outlet of battery case (1) is connected with the entrance of unidirectional valve (2), the outlet of unidirectional valve (2) is connected with the B mouth of solenoid directional control valve (5), another liquid outlet of liquid cools case (8) is connected with one end of hydraulic pump (10), the other end of hydraulic pump (10) is connected with one end of the internal cooling pipeline of motor (11), the other end of the internal cooling pipeline of motor (11) is connected with the entrance of unidirectional valve (12), the outlet of unidirectional valve (12) is connected with the A mouth of solenoid directional control valve (5), and the C mouth of solenoid directional control valve (5) is connected with the inlet of liquid cools case (8), temperature sensor (14), heater block (4), hydraulic pump (3,10), solenoid directional control valve (5), electromagnet cut off valve (6) are connected with entire car controller (13) respectively.
2. battery thermal management system according to claim 1, it is characterized in that: before charging, if carry out cooling to battery, the B mouth of solenoid directional control valve (5) is communicated with C mouth, A mouth is communicated with C mouth, cooling fan (9) is opened, electromagnet cut off valve (6) is opened, and hydraulic pump (3) is opened, and closes heater block (4), hydraulic pump (10).
3. battery thermal management system according to claim 1, it is characterized in that: before charging, if battery is heated, the B mouth of solenoid directional control valve (5) is communicated with D mouth, A mouth is communicated with C mouth, electromagnet cut off valve (6), hydraulic pump (10), cooling fan (9) are closed, hydraulic pump (3) is opened, and heater block (4) is opened.
4. battery thermal management system according to claim 1, it is characterized in that: during electric automobile operation, if battery is heated, the A mouth of solenoid directional control valve (5) is communicated with D mouth, B mouth is communicated with C mouth, heater block (4) and hydraulic pump (3,10) are opened, and cooling fan (9), electromagnet cut off valve (6) are closed.
5. battery thermal management system according to claim 1, it is characterized in that: during electric automobile operation, if carry out cooling to battery and motor, the A mouth of solenoid directional control valve (5) is communicated with C mouth, B mouth is communicated with C mouth, hydraulic pump (3,10) is opened, cooling fan (9) is opened, and electromagnet cut off valve (6) is opened, and closes heater block (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320645530.2U CN203503758U (en) | 2013-10-21 | 2013-10-21 | Battery heat management system of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320645530.2U CN203503758U (en) | 2013-10-21 | 2013-10-21 | Battery heat management system of electric automobile |
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| CN203503758U true CN203503758U (en) | 2014-03-26 |
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| CN201320645530.2U Withdrawn - After Issue CN203503758U (en) | 2013-10-21 | 2013-10-21 | Battery heat management system of electric automobile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490120A (en) * | 2013-10-21 | 2014-01-01 | 三门峡速达交通节能科技股份有限公司 | Battery heat managing system and method of electric vehicle |
| CN104733802A (en) * | 2015-03-25 | 2015-06-24 | 清华大学 | Power battery heat management system based on vehicular natural gas energy supply |
| CN106711548A (en) * | 2017-02-22 | 2017-05-24 | 山东科技大学 | Power battery air heat management system for pure electric vehicle and operating method of system |
| CN108140917A (en) * | 2015-11-09 | 2018-06-08 | 株式会社电装 | battery preheating system |
| CN109070758A (en) * | 2016-02-04 | 2018-12-21 | 江森自控科技公司 | Battery temperature and charging regulating system and method |
| CN109216785A (en) * | 2017-06-29 | 2019-01-15 | 青岛恒金源电子科技有限公司 | A kind of high startup temperature method of Li-ion batteries piles |
-
2013
- 2013-10-21 CN CN201320645530.2U patent/CN203503758U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490120A (en) * | 2013-10-21 | 2014-01-01 | 三门峡速达交通节能科技股份有限公司 | Battery heat managing system and method of electric vehicle |
| CN103490120B (en) * | 2013-10-21 | 2015-09-09 | 三门峡速达交通节能科技股份有限公司 | A kind of battery thermal management system of electric automobile and method |
| CN104733802A (en) * | 2015-03-25 | 2015-06-24 | 清华大学 | Power battery heat management system based on vehicular natural gas energy supply |
| CN104733802B (en) * | 2015-03-25 | 2016-10-26 | 清华大学 | A kind of power battery thermal management system based on vehicle-mounted natural gas energy supply |
| CN108140917A (en) * | 2015-11-09 | 2018-06-08 | 株式会社电装 | battery preheating system |
| CN108140917B (en) * | 2015-11-09 | 2021-01-01 | 株式会社电装 | Battery preheating system |
| CN109070758A (en) * | 2016-02-04 | 2018-12-21 | 江森自控科技公司 | Battery temperature and charging regulating system and method |
| CN109070758B (en) * | 2016-02-04 | 2022-03-18 | Cps科技控股有限公司 | Battery temperature and charge regulation system and method |
| CN106711548A (en) * | 2017-02-22 | 2017-05-24 | 山东科技大学 | Power battery air heat management system for pure electric vehicle and operating method of system |
| CN106711548B (en) * | 2017-02-22 | 2023-07-07 | 山东科技大学 | Air thermal management system for power battery of pure electric vehicle and working method of air thermal management system |
| CN109216785A (en) * | 2017-06-29 | 2019-01-15 | 青岛恒金源电子科技有限公司 | A kind of high startup temperature method of Li-ion batteries piles |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Henan Suda Electric Automobile Technology Co. Ltd. Assignor: Sanmenxia Suda Transportation Energy Saving Technology Co., Ltd. Contract record no.: 2015410000054 Denomination of utility model: A kind of battery thermal management system of electric automobile and method Granted publication date: 20140326 License type: Exclusive License Record date: 20150630 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20150909 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20150909 |
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| RGAV | Abandon patent right to avoid regrant |