CN103474714A - Constant-temperature method and system for power battery of electromobile - Google Patents
Constant-temperature method and system for power battery of electromobile Download PDFInfo
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- CN103474714A CN103474714A CN2013104144479A CN201310414447A CN103474714A CN 103474714 A CN103474714 A CN 103474714A CN 2013104144479 A CN2013104144479 A CN 2013104144479A CN 201310414447 A CN201310414447 A CN 201310414447A CN 103474714 A CN103474714 A CN 103474714A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a constant-temperature method and system for a power battery of an electromobile. The method is characterized in that firstly the power battery of the electromobile is arranged in a sealed container; secondary the sealed container is respectively communicated with a vacuum pump and a heat exchanger of an electromobile air conditioner; the vacuum pump is used for vacuumizing the sealed container, so as to enable the sealed container to work in a vacuum state, and the battery can be in a constant-temperature state by using the vacuum heat preservation principle; thirdly the vacuum pump and the heat exchanger are started under the control of a temperature controller, and hot air or cold air generated by the heat exchanger is introduced into the sealed container by the vacuum pump, so as to enable the temperature in the sealed container to be constant in the optimum working temperature range of the power battery and enable the sealed container to be in the vacuum state. The air conditioner assembled in the electromobile is used as a hot source and a cold source which are used for keeping the constant temperature of the battery; simultaneously, a vacuum heat preservation technology is creatively applied in the constant-temperature management of the electromobile battery for the first time; the method is simple, easy to implement, and capable of being used for improving the performances of the power battery, and prolonging the service life of the battery.
Description
Technical field
The present invention relates to the power battery technology of a kind of common electric automobile (motor compressor) or heat pump type electromobile, especially relate to a kind of for guaranteeing Temp. control method and the system of this type of battery normal working temperature, specifically a kind of electric automobile power battery constant temperature method and system thereof.
Background technology
The eyeball that electric automobile is being subject to governments at all levels and environmentalist as a kind of free of contamination vehicles is looked at, various countries, governments at all levels have all dropped into a large amount of manpower and materials and have been researched and developed, but, due to the useful life of battery and the restriction of course continuation mileage, the popularization of electrocar is at present still in starting.What affect the electric automobile course continuation mileage is mainly battery performance, therefore to develop large capacity battery for electric automobile on the one hand, on the other hand also will be from giving full play to battery performance two aspects, and battery performance is subject to such environmental effects fairly obvious, especially under cryogenic conditions, battery performance descends fairly obvious, although and can improve serviceability under hot conditions, if surpass certain temperature can cause the dilatancy of battery and cause potential safety hazard.Therefore, do not have in the current battery performance under the prerequisite of breakthrough in essence, if improve the serviceability of battery, make battery operated key and the effective measures that its effect is raising automobile power cell performance of giving full play under optimum temperature.
Summary of the invention
The objective of the invention is for existing electric vehicle power accumulator easily influenced by ambient temperaturely and affect the problem that performance is brought into play, invent a kind of method that can make battery work under temperature constant state, a kind of corresponding constant temperature system is provided simultaneously.
One of technical scheme of the present invention is:
A kind of electric automobile power battery constant temperature method, it is characterized in that at first the electrokinetic cell of electric automobile being arranged in an airtight container, next is connected respectively the sealing container with the heat exchanger of vacuum pump and mounted air conditioner system, utilize vacuum pump to vacuumize airtight container, it is operated under vacuum state, utilize the vacuum heat-preserving principle to make electrokinetic cell constant temperature, the 3rd, open vacuum pump and heat exchanger under the control of temperature controller, hot gas heat exchanger produced by vacuum pump or cold air are introduced in airtight container, make temperature constant in airtight container in electrokinetic cell optimum working temperature scope and make airtight container in vacuum state.
When the temperature in airtight container reaches set point, first close the air inlet that airtight container connects heat exchanger, the vacuum pump vacuum degree be evacuated in airtight container that works on reaches set point, thereby makes airtight container in vacuum state.
The surface of described airtight container is provided with the thermal insulation separation thermosphere.
Described heat exchanger, as the part of air energy heat pump system, provides heating or freeze required thermal source or low-temperature receiver by the air energy heat pump system.
Two of technical scheme of the present invention is:
A kind of electric automobile power battery thermostatic control system, it is characterized in that it comprises an airtight container 10 for electrokinetic cell 11 is installed, airtight container 10 is provided with the gas outlet and the air inlet that is connected heat exchanger 6 that connects vacuum pump 13, in the surperficial or described airtight container of electrokinetic cell 11, the transducer 15 for detection of temperature of powered cell is installed, described vacuum pump 13, heat exchanger and temperature sensor all are electrically connected with controller 16.
The first electromagnetically operated valve 12 of controlling the outlet passageway break-make is installed on the outlet passageway 19 that connects described gas outlet and vacuum pump, on the inlet channel 18 that connects described air inlet and heat exchanger 6, the second electromagnetically operated valve 8 is installed.
Described heat exchanger 6 is building blocks of air energy heat pump system, described air energy heat pump system also comprises motor compressor 1, cross valve 2, expansion valve 4,5, extraneous air heat exchanger 3 and gas-liquid separator 7, by connecing to the loop direction that changes cold-producing medium of cross valve 2; When needs heat, the high-temperature gas cold-producing medium is discharged by motor compressor, heat exchanger 6 through being arranged on battery side adds hot-air, air after heating by air inlet, enter in airtight container and by vacuum pump by hot-air constantly in the suction seal container, the continuous circulation heating battery is to set temperature value; When needs are cooling, high temperature refrigerant is discharged by motor compressor, the extraneous air heat exchanger 3 of flowing through, coolingly by the expansion valve throttling, become low temperature gas-liquid two-phase cold-producing medium to flow to heat exchanger 6 evaporation of battery side, cooling-air enter in airtight container and under the effect of vacuum pump the continuous circulation cool batteries to set temperature value; When needs are incubated, close air inlet, open gas outlet, vacuum pump work vacuumizes to the cavity in airtight container the vacuum degree that reaches setting and quits work, and closes gas outlet, makes electrokinetic cell in the vacuum heat-preserving state.
Beneficial effect of the present invention:
The air-conditioning system that the present invention utilizes electric automobile to configure is as the thermal source that makes battery constant temperature and low-temperature receiver, creatively the vacuum heat-preserving technology is applied to first in the constant temperature management of Vehicular battery simultaneously, not only method is simple in structure, be easy to realize, and can improve the performance of Vehicular dynamic battery, extend the useful life of battery.
The present invention is incubated energy loss is reduced by vacuum technique.
The present invention evenly carries out cooling or heating to each parts of battery by vacuum technique, and avoid the unidirectional convection current of conventional fan to produce cooling or heat inhomogeneously is difficult to reach the accurate control of battery temperature.
It is 2.0 ~ 3.0 that the present invention adopts the efficiency COP (adding heat/power consumption) of air energy heat pump heating, and than PTC electrical heating efficiency, 0.85 ~ 0.9(adds heat/power consumption) height, thus heat pump is more saved the mileages of continuation that electric power improves car load.
The accompanying drawing explanation
Fig. 1 is system principle schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment mono-.
As shown in Figure 1.
A kind of electric automobile power battery constant temperature method, it comprises the following steps:
At first, the electrokinetic cell of electric automobile is arranged in an airtight container with the thermal insulation separation thermosphere;
Secondly, the sealing container is connected respectively with the heat exchanger 6 of vacuum pump and mounted air conditioner system, heat exchanger 6, as the part of air energy heat pump system, provides heating or freeze required thermal source or low-temperature receiver by the air energy heat pump system.
Utilize vacuum pump to vacuumize airtight container, it is operated under vacuum state, utilize the vacuum heat-preserving principle to make electrokinetic cell constant temperature;
The 3rd, unlatching vacuum pump and heat exchanger under the control of temperature controller (can adopt conventional electrical technology to be realized), hot gas heat exchanger produced by vacuum pump or cold air are introduced in airtight container, make temperature constant in airtight container in electrokinetic cell optimum working temperature scope and make airtight container in vacuum state.When the temperature in airtight container reaches set point, first close the air inlet that airtight container connects heat exchanger, the vacuum pump vacuum degree be evacuated in airtight container that works on reaches set point, thereby makes airtight container in vacuum state.
Details are as follows:
As shown in Figure 1, at first the present invention arranges the closed cavity 10 of a connection in the electrokinetic cell surrounding, closed cavity arranges exhaust outlet and air inlet, closed cavity gas outlet one end sets out gas passage 19 and is communicated with outside vacuum pump 13, and electromagnetically operated valve 12 is set on outlet passageway, open when the vacuum pump work vacuumizes cavity, close when vacuum pump quits work; Closed cavity air inlet end is established inlet channel 18 and is communicated with external heat pumping system battery side heat exchanger 6 surrounding air gas channels, and electromagnetically operated valve 8 is set on inlet channel, when vacuum pump vacuumizes while carrying out vacuum heat-preserving and cuts out closed cavity; When electrokinetic cell 11 needs heating or opens when cooling, and extracts and flow through the cold air that hot-air that heat pump battery side heat exchanger 6 heats (while heating) flows through heat pump heat exchanger 6 cooling (during refrigeration) to heating of battery or extraction and carry out cooling to battery by vacuum pump.This vacuum system can realize to electrokinetic cell is vacuumized insulation, extracts the hot air circulate heating, extracts the cold air circulating cooling.
Secondly, the present invention arranges insulating 9 in the peripheral surrounding of closed cavity.
The 3rd, the heating of electrokinetic cell of the present invention or coolingly by the air energy heat pump system, provide thermal source or low-temperature receiver, this air energy heat pump is comprised of motor compressor 1, cross valve 2, battery side heat exchanger 6, expansion valve 4,5, extraneous air heat exchanger 3, gas-liquid separator 7, by connecing to the loop direction that changes cold-producing medium of cross valve.When needs heat, the high-temperature gas cold-producing medium is discharged by compressor, through battery calorimetric interchanger, adds hot-air and passes through vacuum pump circulating-heating battery; When needs are cooling, high temperature refrigerant is discharged by compressor, and the extraneous air heat exchanger of flowing through coolingly becomes low temperature gas-liquid two-phase cold-producing medium to flow to battery side heat exchanger evaporation by the expansion valve throttling, cooling-air by vacuum pump circulating cooling battery; When needs are incubated, shut electromagnetic valve 8, open electromagnetically operated valve 12, and vacuum pump work vacuumizes and reaches the certain vacuum degree and quit work cavity, and shut electromagnetic valve 12, make electrokinetic cell in the vacuum heat-preserving state.
Finally, the present invention can control the operating state of heat pump and vacuum system by input battery temperature signal, the vacuum sensor input vacuum degree signal of temperature sensor 14, reaches the temperature of electrokinetic cell is controlled.
Embodiment bis-.
As shown in Figure 1.
A kind of electric automobile power battery thermostatic control system, it comprises an airtight container 10 for electrokinetic cell 11 is installed, electrokinetic cell 11 is installed with in airtight container 10 by fixed mount 17, the surface of airtight container 10 preferably is provided with insulating 9 to extend the insulation cycle, reduce as far as possible the startup of compressor, airtight container 10 is provided with the gas outlet and the air inlet that is connected heat exchanger 6 that connects vacuum pump 13, the first electromagnetically operated valve 12 of controlling the outlet passageway break-make is installed on the outlet passageway 19 that connects described gas outlet and vacuum pump, on the inlet channel 18 that connects described air inlet and heat exchanger 6, the second electromagnetically operated valve 8 is installed.In the surface of electrokinetic cell 11 or described airtight container, be equipped with for detection of the transducer 15 of temperature of powered cell and for detection of the transducer 14 of vacuum degree, described vacuum pump 13, the motor compressor 1 of controlling heat exchanger work and temperature sensor 15, vacuum sensor 14, electromagnetically operated valve 8,12 etc. all can adopt routine techniques to be realized with controller 16() be electrically connected.Described heat exchanger 6 is building blocks of air energy heat pump system, described air energy heat pump system also comprises motor compressor 1, cross valve 2, expansion valve 4,5, extraneous air heat exchanger 3 and gas-liquid separator 7, by connecing to the loop direction that changes cold-producing medium of cross valve 2; When needs heat, the high-temperature gas cold-producing medium is discharged by motor compressor, heat exchanger 6 through being arranged on battery side adds hot-air, air after heating by air inlet, enter in airtight container and by vacuum pump by hot-air constantly in the suction seal container, (circulation) heating battery is to set temperature value continuously; When needs are cooling, high temperature refrigerant is discharged by motor compressor, the extraneous air heat exchanger 3 of flowing through, coolingly by the expansion valve throttling, become low temperature gas-liquid two-phase cold-producing medium to flow to heat exchanger 6 evaporation of battery side, cooling-air enter in airtight container and under the effect of vacuum pump continuously (circulation) cool batteries to set temperature value; When needs are incubated, close air inlet, open gas outlet, vacuum pump work vacuumizes to the cavity in airtight container the vacuum degree that reaches setting and quits work, and closes gas outlet, makes electrokinetic cell in the vacuum heat-preserving state.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (7)
1. an electric automobile power battery constant temperature method, it is characterized in that at first the electrokinetic cell of electric automobile being arranged in an airtight container, next is connected respectively the sealing container with the heat exchanger of vacuum pump and mounted air conditioner system, utilize vacuum pump to vacuumize airtight container, it is operated under vacuum state, utilize the vacuum heat-preserving principle to make electrokinetic cell constant temperature, the 3rd, open vacuum pump and heat exchanger under the control of temperature controller, hot gas heat exchanger produced by vacuum pump or cold air are introduced in airtight container, make temperature constant in airtight container in electrokinetic cell optimum working temperature scope and make airtight container in vacuum state.
2. method according to claim 1, while it is characterized in that temperature in airtight container reaches set point, first close airtight container and connect the air inlet of heat exchanger, the vacuum pump vacuum degree be evacuated in airtight container that works on reaches set point, thereby makes airtight container in vacuum state.
3. method according to claim 1, is characterized in that the surface of described airtight container is provided with the thermal insulation separation thermosphere.
4. method according to claim 1, is characterized in that the part of described heat exchanger as the air energy heat pump system, by the air energy heat pump system, provides heating or freeze required thermal source or low-temperature receiver.
5. an electric automobile power battery thermostatic control system, it is characterized in that it comprises an airtight container (10) for electrokinetic cell (11) are installed, airtight container (10) is provided with the gas outlet and the air inlet that is connected heat exchanger (6) that connects vacuum pump (13), in the surperficial or described airtight container of electrokinetic cell (11), the transducer (15) for detection of temperature of powered cell is installed, described vacuum pump (13), heat exchanger and temperature sensor all are electrically connected with controller (16).
6. system according to claim 5, it is characterized in that the first electromagnetically operated valve (12) of controlling the outlet passageway break-make is installed on the outlet passageway (19) that connects described gas outlet and vacuum pump, on the inlet channel (18) that connects described air inlet and heat exchanger (6), the second electromagnetically operated valve (8) is installed.
7. system according to claim 5, it is characterized in that described heat exchanger (6) is a building block of air energy heat pump system, described air energy heat pump system also comprises motor compressor (1), cross valve (2), expansion valve (4,5), extraneous air heat exchanger (3) and gas-liquid separator (7), by connecing to the loop direction that changes cold-producing medium of cross valve (2); When needs heat, the high-temperature gas cold-producing medium is discharged by motor compressor, heat exchanger through being arranged on battery side (6) adds hot-air, air after heating by air inlet, enter in airtight container and by vacuum pump by hot-air constantly in the suction seal container, the laser heating battery is to set temperature value; When needs are cooling, high temperature refrigerant is discharged by motor compressor, the extraneous air heat exchanger (3) of flowing through, coolingly by the expansion valve throttling, become low temperature gas-liquid two-phase cold-producing medium to flow to heat exchanger (6) evaporation of battery side, cooling-air enter in airtight container and under the effect of vacuum pump continuously cool batteries to set temperature value; When needs are incubated, close air inlet, open gas outlet, vacuum pump work vacuumizes to the cavity in airtight container the vacuum degree that reaches setting and quits work, and closes gas outlet, makes electrokinetic cell in the vacuum heat-preserving state.
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| CN201310414447.9A CN103474714B (en) | 2013-09-12 | 2013-09-12 | Electric automobile power battery constant temperature method and system thereof |
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| CN201310414447.9A CN103474714B (en) | 2013-09-12 | 2013-09-12 | Electric automobile power battery constant temperature method and system thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157928A (en) * | 2014-08-04 | 2014-11-19 | 北京新能源汽车股份有限公司 | Thermal management system and method for power battery pack |
| CN104527370A (en) * | 2015-01-05 | 2015-04-22 | 安徽江淮汽车股份有限公司 | Vehicle air-conditioner control system integrated with power battery cooling function and control method of vehicle air-conditioner control system integrated with power battery cooling function |
| CN106374157A (en) * | 2016-08-30 | 2017-02-01 | 臻昊(北京)新能源科技有限公司 | Battery heat management system realized by using heat pump technology |
| CN106602172A (en) * | 2016-12-23 | 2017-04-26 | 深圳宣顶实业有限公司 | Constant temperature system of power battery |
| CN107706484A (en) * | 2017-10-19 | 2018-02-16 | 东莞市德尔能新能源股份有限公司 | A kind of vacuum liquid of electrokinetic cell is cold to couple heat management system and method for work |
| CN107819167A (en) * | 2016-09-14 | 2018-03-20 | 罗伯特·博世有限公司 | Battery pack and its active thermal management system |
| CN108346837A (en) * | 2018-02-27 | 2018-07-31 | 王灿灿 | A kind of automobile storage battery humidity control system |
| CN108539324A (en) * | 2018-06-25 | 2018-09-14 | 上海电机学院 | A kind of electric automobile power battery cooling device |
| CN110077252A (en) * | 2019-05-09 | 2019-08-02 | 北京金茂绿建科技有限公司 | A kind of energy storage control system of stereo garage |
| CN110265598A (en) * | 2019-06-24 | 2019-09-20 | 吉林工程技术师范学院 | A kind of low temperature resistant lithium battery group of electric car |
| CN111016582A (en) * | 2019-12-31 | 2020-04-17 | 威马智慧出行科技（上海）有限公司 | Electric automobile heat pump system and electric automobile |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157928A (en) * | 2014-08-04 | 2014-11-19 | 北京新能源汽车股份有限公司 | Thermal management system and method for power battery pack |
| CN104527370A (en) * | 2015-01-05 | 2015-04-22 | 安徽江淮汽车股份有限公司 | Vehicle air-conditioner control system integrated with power battery cooling function and control method of vehicle air-conditioner control system integrated with power battery cooling function |
| CN106374157A (en) * | 2016-08-30 | 2017-02-01 | 臻昊(北京)新能源科技有限公司 | Battery heat management system realized by using heat pump technology |
| CN107819167B (en) * | 2016-09-14 | 2022-11-04 | 罗伯特·博世有限公司 | Battery pack and active thermal management system thereof |
| CN107819167A (en) * | 2016-09-14 | 2018-03-20 | 罗伯特·博世有限公司 | Battery pack and its active thermal management system |
| CN106602172A (en) * | 2016-12-23 | 2017-04-26 | 深圳宣顶实业有限公司 | Constant temperature system of power battery |
| CN107706484A (en) * | 2017-10-19 | 2018-02-16 | 东莞市德尔能新能源股份有限公司 | A kind of vacuum liquid of electrokinetic cell is cold to couple heat management system and method for work |
| CN108346837A (en) * | 2018-02-27 | 2018-07-31 | 王灿灿 | A kind of automobile storage battery humidity control system |
| CN108539324A (en) * | 2018-06-25 | 2018-09-14 | 上海电机学院 | A kind of electric automobile power battery cooling device |
| CN110077252A (en) * | 2019-05-09 | 2019-08-02 | 北京金茂绿建科技有限公司 | A kind of energy storage control system of stereo garage |
| CN110265598A (en) * | 2019-06-24 | 2019-09-20 | 吉林工程技术师范学院 | A kind of low temperature resistant lithium battery group of electric car |
| CN111016582A (en) * | 2019-12-31 | 2020-04-17 | 威马智慧出行科技（上海）有限公司 | Electric automobile heat pump system and electric automobile |
| CN111016582B (en) * | 2019-12-31 | 2021-06-25 | 威马智慧出行科技（上海）有限公司 | Electric automobile heat pump system and electric automobile |
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Address after: 210022 Daming Road, Qinhuai District, Jiangsu, Nanjing, China Applicant after: Nanjing Aotecar New Energy Technology Co., Ltd. Applicant after: Anhui Aotejia Technology Development Co., Ltd. Address before: 210022 Daming Road, Qinhuai District, Jiangsu, Nanjing, China Applicant before: Nanjing Aotecar Refrigerating Co., Ltd. Applicant before: Anhui Aotejia Technology Development Co., Ltd. |
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