CN104578295A - Vehicle power battery low-temperature charging and heating system and method - Google Patents
Vehicle power battery low-temperature charging and heating system and method Download PDFInfo
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- CN104578295A CN104578295A CN201410855832.1A CN201410855832A CN104578295A CN 104578295 A CN104578295 A CN 104578295A CN 201410855832 A CN201410855832 A CN 201410855832A CN 104578295 A CN104578295 A CN 104578295A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 14
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- 230000000630 rising effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- H02J7/0091—
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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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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- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a vehicle power battery low-temperature charging and heating system and method. The heating system comprises a battery managing unit, a non-vehicle-mounted battery charger, a heater and a fan, wherein the battery managing unit is used for detecting temperatures of multiple points of a power battery and controlling the running states of the non-vehicle-mounted battery charger, the heater and the fan; the non-vehicle-mounted battery charger is connected with the battery managing unit and used for charging the power battery; the heater is connected with the battery managing unit and used for heating the power battery; the fan is connected with the battery managing unit and used for adjusting heat circulation in the power battery. According to the vehicle power battery low-temperature charging and heating system and method, the internal heat circulating fan is started after the vehicle power battery low-temperature charging and heating system enters a low-temperature charging mode, the heat dissipating efficiency in a whole battery box is improved, heat in the battery is more uniform, and consistence of the battery environment temperature is improved; the low-temperature charging and heating time is shortened to a great extent due to the fact that stepped type charging power is adopted, and very practical applicability is achieved.
Description
Technical field
The present invention relates to charging electric vehicle field, particularly relate to heating system and method that a kind of Vehicular dynamic battery charges at low temperatures safely and fast.
Background technology
In recent years, due to energy savings and the advantage such as discharge capacity reducing carbon dioxide, the investigation and application of electric automobile is made to become a focus of auto industry.But along with the fast development of electric automobile, the extensive use of lithium ion battery, some relevant issues also come out, especially battery low temperature charging problems thereupon.
The factor of restriction lithium ion battery cryogenic property comprises: the low ionic conductivity of (1) electrolyte and SEI film; (2) under low temperature along with circulation carrying out, SEI film progressive additive; (3) graphite cathode very easily polarizes.So negative pole charge acceptance is poor under cryogenic, charge efficiency is low, shorten battery and there is certain potential safety hazard.
But the heat radiation of prior art low-temperature charging heating method is uneven and the firing rate slower duration is longer, uniform charging of dispelling the heat under the invention provides a kind of cryogenic conditions heating system and heating means safely and fast.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Vehicular dynamic battery low-temperature charging heating system and method, in order to solve the uneven and slower long-term problem of firing rate of low-temperature charging heating method heat radiation in prior art.
Technical scheme of the present invention is to provide a kind of Vehicular dynamic battery low-temperature charging heating system, comprising: battery management unit, non-Vehicular charger, heater and fan; Wherein:
Described non-Vehicular charger, is connected with described battery management unit, for described power battery charging;
Described heater, is connected with described battery management unit, for heating described electrokinetic cell;
Battery management unit, for detecting the multi-point temp of electrokinetic cell and controlling the running status of described non-Vehicular charger, described heater and described fan;
When described electrokinetic cell minimum temperature is lower than initial threshold T0, enter low temperature charge mode, wherein,
If when described electrokinetic cell minimum temperature is lower than switching threshold T1, described heater only heats described electrokinetic cell;
If when described electrokinetic cell minimum temperature is switching threshold T1 ~ switching threshold T2, described heater and described non-Vehicular charger heat described electrokinetic cell respectively simultaneously and charge, and input voltage staged increases, and charge requirement electric current is constant;
If when described electrokinetic cell minimum temperature is switching threshold T2 ~ initial threshold T0, described heater and described non-Vehicular charger heat described electrokinetic cell respectively simultaneously and charge, input voltage is described electrokinetic cell upper voltage limit value, and charge requirement electric current staged increases;
If when described electrokinetic cell minimum temperature is higher than initial threshold T0, enters normal charge mode or close low temperature charge mode and fan, switching and enter normal charge mode.
In an embodiment of the present invention, described heater is ptc heater.
In an embodiment of the present invention, described fan is thermal cycle fan, is connected with described battery management unit, for regulating and controlling the thermal cycle of described electrokinetic cell inside.
In an embodiment of the present invention, the interface of described non-Vehicular charger is direct-current charging interface.
In an embodiment of the present invention, described electrokinetic cell and described ptc heater are in parallel.
In an embodiment of the present invention, described ptc heater is placed in the inlet side of described thermal cycle fan.
The present invention also provides a kind of Vehicular dynamic battery low-temperature charging heating method, and concrete steps comprise:
Detect the multi-point temp of electrokinetic cell;
When described electrokinetic cell minimum temperature is lower than initial threshold T0, enter low temperature charge mode, wherein,
If when described electrokinetic cell minimum temperature is lower than switching threshold T1, then heat described electrokinetic cell;
If when described electrokinetic cell minimum temperature is switching threshold T1 ~ switching threshold T2, then heats described electrokinetic cell simultaneously and charge, input voltage staged increases, and charge requirement electric current is constant;
If when described electrokinetic cell minimum temperature is switching threshold T2 ~ initial threshold T0, then heats described electrokinetic cell simultaneously and charge, input voltage is described electrokinetic cell upper voltage limit value, and charge requirement electric current staged increases;
If when described electrokinetic cell minimum temperature is higher than initial threshold T0, enters normal charge mode or close low temperature charge mode and fan, switching and enter normal charge mode.
In an embodiment of the present invention, if when described electrokinetic cell minimum temperature is lower than switching threshold T1, the difference of input voltage and cell voltage is 1V.
Internal heat circulating fan is started after entering low temperature charge mode by the present invention, improve whole battery case internal heat dissipating efficiency, and make inside battery heat more even, add battery context temperature consistency, and adopt staged charge power to shorten the low-temperature charging heating time to a great extent, there is very strong practical application.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the systematic schematic diagram of low-temperature charging heating described in the present invention.
Fig. 2 is the system circuit diagram of low-temperature charging heating described in the present invention.
Fig. 3 is the flow chart of the low-temperature charging heating of Vehicular dynamic battery described in the present invention.
Fig. 4 is the system fan of low-temperature charging heating described in the present invention radiating principle figure.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.
Fig. 1 is the systematic schematic diagram of low-temperature charging heating described in the present invention, and this Vehicular dynamic battery low-temperature charging heating system, comprising: battery management unit 2, non-Vehicular charger 1, heater 4 and fan 5; Wherein:
Described non-Vehicular charger 1, is connected with described battery management unit 2, for charging to described electrokinetic cell 3;
Described heater 4, is connected with described battery management unit 2, for heating described electrokinetic cell 3;
Battery management unit 2, for detecting the multi-point temp of electrokinetic cell 3 and controlling the running status of described non-Vehicular charger 1, described heater 4 and described fan 5;
When described electrokinetic cell minimum temperature is lower than initial threshold T0, enter low temperature charge mode, wherein,
If when described electrokinetic cell minimum temperature is lower than switching threshold T1, described heater only heats described electrokinetic cell 3;
If when described electrokinetic cell minimum temperature is switching threshold T1 ~ switching threshold T2, described heater 4 and described non-Vehicular charger 1 heat simultaneously described electrokinetic cell 3 and charge respectively, and input voltage staged increases, and charge requirement electric current is constant;
If when described electrokinetic cell minimum temperature is switching threshold T2 ~ initial threshold T0, described heater and described non-Vehicular charger 1 heat simultaneously described electrokinetic cell 3 and charge respectively, input voltage is described electrokinetic cell upper voltage limit value, and charge requirement electric current staged increases;
If when described electrokinetic cell minimum temperature is higher than initial threshold T0, enters normal charge mode or close low temperature charge mode and fan, switching and enter normal charge mode.
In an embodiment of the present invention, described heater 4 is ptc heater.
In an embodiment of the present invention, described fan 5 is thermal cycle fan, is connected, for regulating and controlling the thermal cycle of described electrokinetic cell 3 inside with described battery management unit 2.
In an embodiment of the present invention, the interface of described non-Vehicular charger 1 is direct-current charging interface.
In an embodiment of the present invention, described electrokinetic cell 3 and described ptc heater are in parallel.
In an embodiment of the present invention, described ptc heater is placed in the inlet side of described thermal cycle fan.
Internal heat circulating fan is started after entering low temperature charge mode by the present invention, improve whole battery case internal heat dissipating efficiency, and make inside battery heat more even, add battery context temperature consistency, and adopt staged charge power to shorten the low-temperature charging heating time to a great extent, there is very strong practical application.
Be that example is specifically described the present invention below in conjunction with a Vehicular dynamic battery low-temperature charging heating system, but it should be noted that this specific embodiment is only to describe the present invention better, do not form inappropriate limitation of the present invention.
In FIG, this heating system comprises: non-Vehicular charger 1, battery management unit 2, electrokinetic cell 3, ptc heater 4, fan 5, and wherein, non-Vehicular charger 1, is connected with battery management unit 2, for charging to electrokinetic cell 3; Ptc heater 4, is connected with battery management unit 2, for heating electrokinetic cell 3; Battery management unit 2, for detecting the multi-point temp of electrokinetic cell 3 and controlling the running status of non-Vehicular charger 1, ptc heater 4 and fan 5, specifically, battery management unit 2 is connected with electrokinetic cell 3, the parameters of electrokinetic cell 3 is detected and managed, comprise battery temperature, battery cell voltage and total voltage etc., battery management unit 2 is also connected with ptc heater 4, whether heat for controlling ptc heater 4, and according to different temperature adjustment charge information, change the heating-up temperature of ptc heater 4; Ptc heater 4 is placed in the inlet side of fan 5, and fan 5 is placed in the diagonally opposing corner both sides, inside of electrokinetic cell 3, is connected after electrokinetic cell 3 is in parallel with ptc heater 4 with non-Vehicular charger 1.
When heating system enters operating state, as electrokinetic cell minimum temperature T<T0, enter low temperature charge mode, now, non-Vehicular charger 1 carries out communication with battery management unit 2 and is connected, non-Vehicular charger 1 receive battery management unit 2 send charge requirement information after (comprising charge requirement electric current and input voltage), wherein, the electric current of required charger supply when charge requirement electric current refers to that battery charges.Non-Vehicular charger 1 charges and heats to electrokinetic cell 3, after reaching design temperature, stop heating; While to electrokinetic cell heating, start fan, fan uses battery heat dissipation wind channel, forms internal gas flow circulation after startup fan; The heat that ptc heater produces is carried out internal heat circulation, farthest improves overall temperature rise speed and significantly improve battery context temperature consistency.
Fig. 4 is the system fan of low-temperature charging heating described in the present invention radiating principle figure, wherein, battery management system (Battery Management System, be called for short BMS) detect electrokinetic cell 3 each temperature acquisition point temperature, battery management system connects fan 5, control fan 5 repeat circuit disconnect or connect, ptc heater 4 is placed in the inlet side of fan 5, fan 5 is placed in the inner diagonally opposing corner both sides of power brick, after entering low temperature charge mode, start fan 5 and use the heat dissipation wind channel of electrokinetic cell 3, internal gas flow circulation is formed after startup fan 5, the heat produced by ptc heater 4 carries out internal heat circulation, the overall temperature rise speed of maximum raising and significantly improve battery context temperature consistency.
Be illustrated in figure 2 the circuit theory diagrams of Vehicular dynamic battery low-temperature charging heating system, as seen from the figure, I1=I2+I3, wherein,
I1 is the output current of non-Vehicular charger 1, and unit A, I2 are the heating current of ptc heater 4, and unit A, I3 are the charging current of electrokinetic cell 3, unit A.
The present invention also provides a kind of Vehicular dynamic battery low-temperature charging heating method,
Detect the multi-point temp of electrokinetic cell;
When described electrokinetic cell minimum temperature is lower than initial threshold T0, enter low temperature charge mode, wherein,
If when described electrokinetic cell minimum temperature is lower than switching threshold T1, only heat described electrokinetic cell;
If when described electrokinetic cell minimum temperature is switching threshold T1 ~ switching threshold T2, then heats described electrokinetic cell simultaneously and charge, input voltage staged increases, and charge requirement electric current is constant;
If when described electrokinetic cell minimum temperature is switching threshold T2 ~ initial threshold T0, then heats described electrokinetic cell simultaneously and charge, input voltage is described electrokinetic cell upper voltage limit value, and charge requirement electric current staged increases;
If when described electrokinetic cell minimum temperature is higher than initial threshold T0, enters normal charge mode or close low temperature charge mode and fan, switching and enter normal charge mode.
In an embodiment of the present invention, if when described electrokinetic cell minimum temperature is lower than switching threshold T1, the difference of input voltage and cell voltage is 1V.
One embodiment flow chart of Vehicular dynamic battery low-temperature charging heating method as shown in Figure 3, idiographic flow comprises:
S30: each collection point temperature gathering Vehicular dynamic battery;
When electrokinetic cell minimum temperature is lower than 5 DEG C, enter low temperature charge mode, wherein
S31: when electrokinetic cell minimum temperature is lower than-5 DEG C, input voltage U
defeated=U
electricity+ 1V, due to input voltage and the restriction of battery terminal voltage pressure reduction, now only has ptc heater work, namely only heats described electrokinetic cell;
S32: when electrokinetic cell minimum temperature is-5 DEG C ~ 0 DEG C, now to the heating of charging limit, Vehicular dynamic battery limit, input voltage U
defeated=U
electricity+ △ U, △ U is 4V, 6V, 8V, 10V, 12V, and charge requirement electric current is 0.3C (C represents that 1h leads rated capacity);
S33: when electrokinetic cell minimum temperature is 0 DEG C ~ 5 DEG C, now to the heating of charging limit, Vehicular dynamic battery limit, input voltage U
defeatedfor the electrokinetic cell total voltage upper limit, charge requirement electric current is 0.05C, 0.1C, 0.15C, 0.2C, 0.25C;
S34: when electrokinetic cell minimum temperature is higher than 5 DEG C, low-temperature charging heating pattern terminates, closes thermal cycle blower module, opens normal charge mode.
Specifically, Vehicular dynamic battery low-temperature charging heating method is as follows:
When the minimum temperature T of electrokinetic cell collection point is lower than 5 DEG C, enter low-temperature charging heating pattern, battery management unit 2 sends input voltage and input current information to non-Vehicular charger, opens ptc heater and fan simultaneously.
After entering low temperature charge mode, during minimum temperature T<-5 DEG C, input voltage U
defeated=U
electricity+ 1V, charge requirement electric current is 0.3C, due to input voltage and the restriction of battery terminal voltage pressure reduction, now only has ptc heater work;
When electrokinetic cell minimum temperature is in-5 DEG C ~ 0 DEG C, input voltage U
defeated=U
electricity+ △ U (consider that staged increases pressure reduction, △ U is 4V, 6V, 8V, 10V, 12V), charge requirement electric current is 0.3C, and now charge mode is the heating of charging limit, limit, but charging current is less.As shown in table 1, when electrokinetic cell minimum temperature is-5 DEG C ~ 0 DEG C, U
defeated=U
electricity+ △ U (△ U is the difference of input voltage and cell voltage), consider that staged increases input voltage, along with the rising of temperature, △ U value is followed successively by 4V, 6V, 8V, 10V, 12V, and charge requirement electric current is 0.3C, that is, along with battery temperature raises, input voltage also staged increases, and charge requirement electric current is constant, and charging current increases thereupon, charge rate increases.
Because this phase temperature is lower still below 0 DEG C, although be now charging limit, limit heating mode, but still to be heated to be master, therefore charging current is less, but electric current is also increasing gradually, so both ensure that low temperature charging security, increase charging current gradually simultaneously, reduce the charging interval to a certain extent.
Table 1
| Temperature/DEG C | Input voltage (unit V) | Charge requirement electric current (unit A) |
| -5℃≤T<-4℃ | U (electricity)+4 | 0.3C |
| -4℃≤T<-3℃ | U (electricity)+6 | 0.3C |
| -3℃≤T<-2℃ | U (electricity)+8 | 0.3C |
| -2℃≤T<-1℃ | U (electricity)+10 | 0.3C |
| -1℃≤T<0℃ | U (electricity)+12 | 0.3C |
Charge requirement electric current for low-temperature charging heating system when electrokinetic cell minimum temperature is 0 DEG C ~ 5 DEG C as shown in table 2 and input voltage table, now charge mode is also the heating of charging limit, limit, charge requirement current value increases with the rising of temperature, wherein, charge requirement electric current is 0.05C, 0.1C, 0.15C, 0.2C, 0.25C, input voltage is the electrokinetic cell total voltage upper limit, along with temperature raises, charge requirement electric current staged increases, charging current also increases, and heating current raises with ptc heater 4 terminal voltage to be increased gradually.
This stage, charging current also staged increased, and substantially reduces the charging interval, add customer satisfaction under the prerequisite ensureing cell safety along with the rising gradually of temperature.
Table 2
| Temperature/DEG C | Input voltage (unit V) | Charge requirement electric current (unit A) |
| 0℃≤T<1℃ | The electrokinetic cell total voltage upper limit | 0.05C |
| 1℃≤T<2℃ | The electrokinetic cell total voltage upper limit | 0.1C |
| 2℃≤T<3℃ | The electrokinetic cell total voltage upper limit | 0.15C |
| 3℃≤T<4℃ | The electrokinetic cell total voltage upper limit | 0.2C |
| 4℃≤T<5℃ | The electrokinetic cell total voltage upper limit | 0.25C |
When electrokinetic cell minimum temperature is T >=5 DEG C, disconnect ptc heater 4, enter normal charge mode under normal temperature.
Internal heat circulating fan is started after entering low temperature charge mode by the present invention, improve whole battery case internal heat dissipating efficiency, and make inside battery heat more even, add battery context temperature consistency, and adopt staged charge power to shorten the low-temperature charging heating time to a great extent, there is very strong practical application.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a Vehicular dynamic battery low-temperature charging heating system, is characterized in that, comprising: battery management unit, non-Vehicular charger, heater and fan; Wherein:
Described non-Vehicular charger, is connected with described battery management unit, for described power battery charging;
Described heater, is connected with described battery management unit, for heating described electrokinetic cell;
Battery management unit, for detecting the multi-point temp of electrokinetic cell and controlling the running status of described non-Vehicular charger, described heater and described fan;
When described electrokinetic cell minimum temperature is lower than initial threshold T0, enter low temperature charge mode, wherein,
If when described electrokinetic cell minimum temperature is lower than switching threshold T1, described heater only heats described electrokinetic cell;
If when described electrokinetic cell minimum temperature is switching threshold T1 ~ switching threshold T2, described heater and described non-Vehicular charger heat described electrokinetic cell respectively simultaneously and charge, and input voltage staged increases, and charge requirement electric current is constant;
If when described electrokinetic cell minimum temperature is switching threshold T2 ~ initial threshold T0, described heater and described non-Vehicular charger heat described electrokinetic cell respectively simultaneously and charge, input voltage is described electrokinetic cell upper voltage limit value, and charge requirement electric current staged increases;
If when described electrokinetic cell minimum temperature is higher than initial threshold T0, enters normal charge mode or close low temperature charge mode and fan, switching and enter normal charge mode.
2. Vehicular dynamic battery low-temperature charging heating system as claimed in claim 1, it is characterized in that, described heater is ptc heater.
3. Vehicular dynamic battery low-temperature charging heating system as claimed in claim 2, it is characterized in that, described fan is thermal cycle fan, is connected with described battery management unit, for regulating and controlling the thermal cycle of described electrokinetic cell inside.
4. Vehicular dynamic battery low-temperature charging heating system as claimed in claim 1, it is characterized in that, the interface of described non-Vehicular charger is direct-current charging interface.
5. Vehicular dynamic battery low-temperature charging heating system as claimed in claim 2, it is characterized in that, described electrokinetic cell and described ptc heater are in parallel.
6. Vehicular dynamic battery low-temperature charging heating system as claimed in claim 3, it is characterized in that, described ptc heater is placed in the inlet side of described thermal cycle fan.
7. a Vehicular dynamic battery low-temperature charging heating method, is characterized in that, concrete steps comprise:
Detect the multi-point temp of electrokinetic cell;
When described electrokinetic cell minimum temperature is lower than initial threshold T0, enter low temperature charge mode, wherein,
If when described electrokinetic cell minimum temperature is lower than switching threshold T1, only heat described electrokinetic cell;
If when described electrokinetic cell minimum temperature is switching threshold T1 ~ switching threshold T2, then heats described electrokinetic cell simultaneously and charge, input voltage staged increases, and charge requirement electric current is constant;
If when described electrokinetic cell minimum temperature is switching threshold T2 ~ initial threshold T0, then heats described electrokinetic cell simultaneously and charge, input voltage is described electrokinetic cell upper voltage limit value, and charge requirement electric current staged increases;
If when described electrokinetic cell minimum temperature is higher than initial threshold T0, enters normal charge mode or close low temperature charge mode and fan, switching and enter normal charge mode.
8. Vehicular dynamic battery low-temperature charging heating method as claimed in claim 7, it is characterized in that, if when described electrokinetic cell minimum temperature is lower than switching threshold T1, the difference of input voltage and cell voltage is 1V.
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| CN105186634A (en) * | 2015-10-26 | 2015-12-23 | 维沃移动通信有限公司 | Charging circuit and mobile terminal |
| CN106696744A (en) * | 2017-01-18 | 2017-05-24 | 苏州安普特汽车科技有限公司 | Charging heating system for electric vehicle power battery and heating method |
| CN107878234A (en) * | 2017-11-09 | 2018-04-06 | 成都雅骏新能源汽车科技股份有限公司 | It is a kind of based on adaptive electrokinetic cell heating means |
| CN107953795A (en) * | 2017-12-05 | 2018-04-24 | 上海航天电源技术有限责任公司 | A kind of power battery pack low-temperature charging method |
| CN110481385A (en) * | 2019-08-14 | 2019-11-22 | 郑州日产汽车有限公司 | Vehicle-mounted ternary lithium-ion-power cell heats charging method |
| CN110534844A (en) * | 2019-08-26 | 2019-12-03 | 北汽（常州）汽车有限公司 | A kind of electrical heating method and system of power battery |
| CN111208164A (en) * | 2020-01-18 | 2020-05-29 | 桑顿新能源科技有限公司 | Heating film heating efficiency detection method and related equipment |
| CN111942228A (en) * | 2020-07-28 | 2020-11-17 | 中国第一汽车股份有限公司 | Low-temperature charging control system and control method for electric automobile |
| CN112644341A (en) * | 2019-10-10 | 2021-04-13 | 北京新能源汽车股份有限公司 | Power battery heating control method and device before charging and charger |
| CN113364081A (en) * | 2021-05-18 | 2021-09-07 | 湖北亿纬动力有限公司 | Low-temperature charging method and device |
| CN113799657A (en) * | 2020-06-12 | 2021-12-17 | 郑州宇通客车股份有限公司 | Electric automobile and battery self-awakening heating method thereof |
| CN113799656A (en) * | 2020-06-12 | 2021-12-17 | 郑州宇通客车股份有限公司 | Electric automobile and battery driving heating method and device thereof |
| CN115320454A (en) * | 2022-10-13 | 2022-11-11 | 南通威森新能源科技有限公司 | Control method and control system for new energy automobile battery in low-temperature environment |
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| CN111942228A (en) * | 2020-07-28 | 2020-11-17 | 中国第一汽车股份有限公司 | Low-temperature charging control system and control method for electric automobile |
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