CN109742484A - Batteries of electric automobile packet heating process - Google Patents
Batteries of electric automobile packet heating process Download PDFInfo
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- CN109742484A CN109742484A CN201811571873.2A CN201811571873A CN109742484A CN 109742484 A CN109742484 A CN 109742484A CN 201811571873 A CN201811571873 A CN 201811571873A CN 109742484 A CN109742484 A CN 109742484A
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- battery pack
- bms
- charging pile
- charging
- ptc
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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
A kind of batteries of electric automobile packet heating process: 1. enter charging flow；2. judging whether to heat battery pack according to battery pack temperature, as without being heated, be directly transferred to final step: otherwise sequentially entering following steps: 3.BMS enters heating mode；4.BMS is closed heating circuit；5.BMS sends constant-voltage charge request；6. charging pile charges until the voltage of charging pile output voltage and battery pack is equal, subsequently into next step to battery pack: 7. charging piles heat battery pack to PTC power supply；8. the subenvironment temperature of battery pack enters the 9th step when reaching 0 °C or more；9.BMS stops heating, closes PTC heating circuit；10.BMS closure is main just, leads negative relay；11. charging pile is charged normal according to the charge mode that BMS is requested.The present invention can effectively avoid battery pack from being damaged greatly in discharge process and charging process, and then improve the service life of battery pack.
Description
Technical field
The present invention relates to batteries of electric automobile packet heating process.
Background technique
Batteries of electric automobile packet is made of a large amount of battery cell, and battery cell is using lithium battery, this electricity
Pond and we battery of mobile phone performance be it is similar, temperature has a great impact to the performance of this battery, especially works as electricity
When pond is in the environment of temperature very low [being lower than 0 DEG C], damage of the discharge process and charging process of battery to battery is very big.
Therefore, when there is a very low ambient temperature, need just to can star automobile after carrying out heating appropriate to battery pack.
Application number: 104577257 B of 201510026247.5, Authorization Notice No. CN, a kind of entitled " electric car electricity
The Chinese invention patent of pond packet low-temperature preheating system and its method for preheating battery pack " discloses batteries of electric automobile packet heating skill
Art: " temperature collecting device is used to acquire the temperature in battery pack, the electricity of the power supply signal output end connection heating device of generator
Source signal input terminal, driven by engine generator generate electricity, and the control signal output of engine controller connects generator
Generation control signal input terminal, engine controller control signal output connection engine control signal input,
The thermal control signals output end of heating-system-controller connects the control signal input and power generation of engine controller simultaneously
The control signal input of machine controller.Heating-system-controller judges that temperature collecting device acquires the intracorporal temperature of battery pack case
Degree realizes the control to heating device." patented technology is that " it is appropriate when there is a very low ambient temperature, to need to carry out battery pack
Heating after just can star automobile " provide evidence.
Summary of the invention
Main inventive purpose of the invention, be to provide it is a kind of when there is a very low ambient temperature to battery pack carry out it is appropriate plus
Restart the batteries of electric automobile packet heating technique of electric car after heat.
Technical solution used in the present invention is: a kind of batteries of electric automobile packet heating process, comprising the following steps:
The first step, is inserted into charging gun, and BMS[is the abbreviation of " battery management system "] normally power on, closure is main just, the negative relay of master
Into charging flow；
Second step determines whether demand for heat: if the minimum temperature of battery cell in battery pack is more than or equal to 0 DEG C, being directly transferred to
Finally step 11: otherwise charging pile is charged normal according to the charge mode that BMS is requested, that is, sequentially enter following steps:
Third step, BMS issues command adapted thereto to ptc heater, into heating mode；
4th step, BMS are closed PTC relay by process, are closed PTC heating circuit；
5th step, BMS issue charge request to charging pile by the analytical calculation to demand for heat: including charging voltage, namely
Cell voltage and charging current, to guarantee that battery pack does not have electric current input；
6th step waits the operation is stable, i.e., after the voltage phase difference of charging pile output voltage and battery pack is greater than 10 volts, cutting is main just
With the negative relay of master, subsequently into next step:
7th step, charging pile individually heat battery pack to PTC power supply；
8th step, BMS judge whether the minimum temperature of battery cell in battery pack reaches 0 °C or more, such as not up to 0 °C or more,
Then charging pile continues individually to heat battery pack to PTC power supply, such as reaches 0 °C or more, then enters the 9th step；
9th step, BMS stop heating: disconnecting PTC relay, cut off PTC heating circuit；
Tenth step, system electrification: BMS closure is main just with the negative relay of master, connects major loop；
Preferably, second step, whether the minimum temperature according to battery cell in battery pack, which is lower than 5 °C, judges whether to battery pack
It is heated, such as larger than 5 °C, then without heating to battery pack, but be directly transferred to final step: charging pile is according to BMS
The charge mode of request charges normal, and otherwise enters third step；Correspondingly, the 8th step, BMS judges battery cell in battery pack
Whether minimum temperature reaches 5 °C or more, and such as not up to 5 °C or more, then charging pile continues individually to power to PTC and carry out to battery pack
Heating, such as reaches 5 °C or more, then enters the 9th step.This preferred embodiment is conducive to protect battery pack.
Preferably, the 6th step, within 5 volts of voltage phase difference of charging pile output voltage and battery pack, cutting it is main just after
Electric appliance, main negative relay, subsequently into next step.This preferred embodiment is conducive to protect battery pack.
In conclusion the beneficial effects of the present invention are: by electricity when the subenvironment temperature locating for the battery pack is very low
Chi Bao, which is heated after the environment temperature locating for the battery pack reaches target temperature or more, just starts automobile, it is possible to prevente effectively from electric
Chi Bao is damaged greatly in discharge process and charging process, and then improves the service life of battery pack.
In addition, " A or more ", " A or less ", " within A ", " other than A " are including " A " here.
Detailed description of the invention
Fig. 1: batteries of electric automobile packet heating process schematic diagram.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
The specific structure of battery pack heater circuit according to the present invention, it is applying before the application, application No. is
201821811686.2: being disclosed in the application documents of entitled " a kind of battery pack heater circuit ": including battery circuit, power supply point
With element circuit and charger, the power output end of charger is electrically connected with the power input of power distribution unit circuit,
The power output end of the power distribution unit circuit is electrically connected with the power input of battery circuit, the battery circuit packet
Include the battery pack for charge and discharge, relay circuit and the heater for heating to the battery pack, the battery pack
Charge-discharge end be electrically connected with the output end of relay circuit, the power supply of the output end of the relay circuit and the heater
Input terminal electrical connection.Wherein, relay circuit includes main positive relay, main negative relay, heating relay, precharge relay
Device and preliminary filling resistance, the first end of the positive relay of master are electrically connected with the positive grade end of the battery pack, the positive relay of master
The second end of device is electrically connected with the positive grade end of the input power of the heater, the first end of the pre-charge-relay and it is described just
The first end of main relay is electrically connected, and the second end of the pre-charge-relay is electrically connected with the preliminary filling resistance, the preliminary filling
The second end of resistance is electrically connected with the second end of the positive relay of the master；The first end of the heating relay and the heater
The second end of the electrical connection of input power negative pole end, the heating relay is electrically connected with the second end of the negative relay of the master, institute
The first end for stating main negative relay is electrically connected with the negative pole end of the battery pack；Power distribution unit circuit include one charging after
Electric appliance, the first end of the charge relay are electrically connected with the positive grade end of the charger, the negative pole end of the charger and institute
State the second end electrical connection of heating relay.
As shown in Figure 1, batteries of electric automobile packet heating process including the following steps:
The first step is inserted into charging gun, is normally powered on, and closure is main just, the negative relay of master enters charging flow；
Second step determines whether demand for heat: if the minimum temperature of battery cell in battery pack is more than or equal to 0 DEG C, being directly transferred to
Finally step 11: otherwise charging pile is charged normal according to the charge mode that BMS is requested, that is, sequentially enter following steps:
Third step, BMS issues command adapted thereto to ptc heater, into heating mode；
4th step, BMS are closed PTC relay by process, are closed PTC heating circuit；
5th step, BMS issue charge request to charging pile by the analytical calculation to demand for heat: including charging voltage, namely
Cell voltage and charging current, to guarantee that battery pack does not have electric current input；
6th step waits the operation is stable, i.e., after the voltage phase difference of charging pile output voltage and battery pack is greater than 10 volts, cutting is main just
With the negative relay of master, subsequently into next step:
7th step, charging pile individually heat battery pack to PTC power supply；
8th step, BMS judge whether the minimum temperature of battery cell in battery pack reaches 0 °C or more, such as not up to 0 °C or more,
Then charging pile continues individually to heat battery pack to PTC power supply, such as reaches 0 °C or more, then enters the 9th step；
9th step, BMS stop heating: disconnecting PTC relay, cut off PTC heating circuit；
Tenth step, system electrification: BMS closure is main just with the negative relay of master, connects major loop；
11st step, charging pile are charged normal according to the charge mode that BMS is requested.
Preferably, second step, whether the minimum temperature according to battery cell in battery pack, which is lower than 5 °C, judges whether to electricity
Chi Bao is heated, and such as larger than 5 °C, then without heating to battery pack, but is directly transferred to final step: charging pile according to
The charge mode of BMS request charges normal, and otherwise enters third step；Correspondingly, the 8th step, BMS judges battery list in battery pack
Whether the minimum temperature of body reaches 5 °C or more, and such as not up to 5 °C or more, then charging pile continues individually to power to PTC to battery pack
It is heated, such as reaches 5 °C or more, then enter the 9th step；6th step, such as the voltage phase difference of charging pile output voltage and battery pack
Within 5 volts, the main positive relay of cutting, main negative relay, subsequently into next step.
The specific embodiment of the above is only the preferable embodiment of the present invention, and tool of the invention is not limited with this
Body implements structure and practical range.In fact, the shape, structure and purpose of design can also make according to the present invention
Equivalent variation.Therefore, some equivalence changes made by all shape, structures and purpose of design in accordance with the present invention ought to
It is included within the scope of protection of the present invention namely these equivalence changes all should be by protection of the invention.
Claims (3)
1. a kind of batteries of electric automobile packet heating process, it is characterized in that:
The first step is inserted into charging gun, is normally powered on, and closure is main just, the negative relay of master enters charging flow；
Second step determines whether demand for heat: if the minimum temperature of battery cell in battery pack is more than or equal to 0 DEG C, being directly transferred to
Finally step 11: otherwise charging pile is charged normal according to the charge mode that BMS is requested, that is, sequentially enter following steps:
Third step, BMS issues command adapted thereto to ptc heater, into heating mode；
4th step, BMS are closed PTC relay by process, are closed PTC heating circuit；
5th step, BMS issue charge request to charging pile by the analytical calculation to demand for heat: including charging voltage, namely
Cell voltage and charging current, to guarantee that battery pack does not have electric current input；
6th step waits the operation is stable, i.e., after the voltage phase difference of charging pile output voltage and battery pack is greater than 10 volts, cutting is main just
With the negative relay of master, subsequently into next step:
7th step, charging pile individually heat battery pack to PTC power supply；
8th step, BMS judge whether the minimum temperature of battery cell in battery pack reaches 0 °C or more, such as not up to 0 °C or more,
Then charging pile continues individually to heat battery pack to PTC power supply, such as reaches 0 °C or more, then enters the 9th step；
9th step, BMS stop heating: disconnecting PTC relay, cut off PTC heating circuit；
Tenth step, system electrification: BMS closure is main just with the negative relay of master, connects major loop；
11st step, charging pile are charged normal according to the charge mode that BMS is requested.
2. batteries of electric automobile packet heating process according to claim 1, it is characterized in that: second step, according in battery pack
Whether the minimum temperature of battery cell, which is lower than 5 °C, judges whether to heat battery pack, and such as larger than 5 °C, then without to battery
Packet is heated, but is directly transferred to final step: charging pile is charged normal according to the charge mode that BMS is requested, and is otherwise entered
Third step；Correspondingly, the 8th step, BMS judge whether the minimum temperature of battery cell in battery pack reaches 5 °C or more, do not reach such as
To 5 °C or more, then charging pile continues individually to heat battery pack to PTC power supply, such as reaches 5 °C or more, then enters the 9th
Step.
3. batteries of electric automobile packet heating process according to claim 1 or 2, it is characterized in that: the 6th step, as charging pile is defeated
Out within 5 volts of voltage phase difference of voltage and battery pack, the main positive relay of cutting, main negative relay, subsequently into next step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811571873.2A CN109742484A (en) | 2018-12-21 | 2018-12-21 | Batteries of electric automobile packet heating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811571873.2A CN109742484A (en) | 2018-12-21 | 2018-12-21 | Batteries of electric automobile packet heating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109742484A true CN109742484A (en) | 2019-05-10 |
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ID=66359488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811571873.2A Pending CN109742484A (en) | 2018-12-21 | 2018-12-21 | Batteries of electric automobile packet heating process |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112498178A (en) * | 2020-10-22 | 2021-03-16 | 东风汽车集团有限公司 | Temperature control system and method for battery pack before and after charging in high-temperature and low-temperature environment of electric vehicle |
| CN113752888A (en) * | 2020-06-04 | 2021-12-07 | 比亚迪股份有限公司 | Battery energy processing method and device and vehicle |
| CN114228572A (en) * | 2021-12-14 | 2022-03-25 | 法法汽车(中国)有限公司 | Battery pack heating control device and method and vehicle |
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| CN104393357A (en) * | 2014-11-03 | 2015-03-04 | 惠州市亿能电子有限公司 | Charging method of power battery of electric vehicle |
| 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 |
| CN106785120A (en) * | 2016-12-29 | 2017-05-31 | 洛阳宝盈智控科技有限公司 | A kind of electric automobile power supply system charging heating control method |
| CN106785235A (en) * | 2017-02-10 | 2017-05-31 | 山东谦恒电子科技有限公司 | Battery pack heating means and system |
-
2018
- 2018-12-21 CN CN201811571873.2A patent/CN109742484A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393357A (en) * | 2014-11-03 | 2015-03-04 | 惠州市亿能电子有限公司 | Charging method of power battery of electric vehicle |
| CN106785120A (en) * | 2016-12-29 | 2017-05-31 | 洛阳宝盈智控科技有限公司 | A kind of electric automobile power supply system charging heating control method |
| 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 |
| CN106785235A (en) * | 2017-02-10 | 2017-05-31 | 山东谦恒电子科技有限公司 | Battery pack heating means and system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113752888A (en) * | 2020-06-04 | 2021-12-07 | 比亚迪股份有限公司 | Battery energy processing method and device and vehicle |
| CN113752888B (en) * | 2020-06-04 | 2023-11-14 | 比亚迪股份有限公司 | Battery energy processing method and device and vehicle |
| CN112498178A (en) * | 2020-10-22 | 2021-03-16 | 东风汽车集团有限公司 | Temperature control system and method for battery pack before and after charging in high-temperature and low-temperature environment of electric vehicle |
| CN112498178B (en) * | 2020-10-22 | 2022-04-08 | 东风汽车集团有限公司 | Method for controlling temperature of battery pack before and after charging in high-temperature and low-temperature environment of electric vehicle |
| CN114228572A (en) * | 2021-12-14 | 2022-03-25 | 法法汽车(中国)有限公司 | Battery pack heating control device and method and vehicle |
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Application publication date: 20190510 |