CN109501636A - A kind of electric vehicle prevents small storage battery feed method when charging - Google Patents
A kind of electric vehicle prevents small storage battery feed method when charging Download PDFInfo
- Publication number
- CN109501636A CN109501636A CN201811506761.9A CN201811506761A CN109501636A CN 109501636 A CN109501636 A CN 109501636A CN 201811506761 A CN201811506761 A CN 201811506761A CN 109501636 A CN109501636 A CN 109501636A
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- charging
- vcu
- charger
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- storage battery
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 11
- 230000002618 waking effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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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
-
- 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
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention discloses the methods that small storage battery feed is prevented when a kind of charging of electric vehicle, while waking up battery management system (BMS) by rigid line when charger works, need to wake up entire car controller (VCU), DC-DC converter (DCDC), when VCU detects that vehicle is in charged state, successively it is closed electric machine controller preliminary filling, main positive relay, it is enabled by given DCDC, keep DCDC in running order, it charges to small storage battery, when charging end or charging complete, VCU controls the enabled closing of DCDC, it is then turned off the positive relay of motor master, motor is set to enter discharge condition, after the completion of to be discharged, DCDC and VCU enter dormant state, the case where charger generates heat during the charging process has been effectively relieved in the present invention, extend charger service life；It solves the case where causing charging to stop because of charger overheat during the charging process, shortens the charging time；The case where causing small storage battery to feed because of cooling system work during the charging process has been effectively relieved.
Description
Technical field
The present invention relates to the technical fields of electric vehicle power sources management, prevent small electricity when charging more particularly, to a kind of electric vehicle
The method of bottle feed.
Background technique
Electric vehicle has obtained large range of universal at present, and major vehicle factor is realizing the same of electric vehicle various functions
When, gradually pay close attention to the promotion to vehicle performance, the especially raising to vehicle course continuation mileage.Course continuation mileage is improved to necessarily involve
The promotion of battery capacity and battery energy density.
Battery capacity to charging brings pressure while promotion, if charging current is smaller, will lead to the charging time prolongs
It is long, if charging current is larger, vehicle cooling system is needed to give charger radiating and cooling.When Vehicular charger works, in addition to inciting somebody to action
Alternating current change into direct current electricity output to power battery outside, can also export 12V electricity for vehicle low pressure electric consumption.And reality output
The power of 12V electricity is smaller, is not enough to low pressure electric quantity consumption when vehicle cooling system being supported to work, and is easy after the charging time is longer
Small storage battery is caused to feed.
Summary of the invention
The technical problem to be solved by the present invention is to overcome existing electric vehicles to be easy to cause small storage battery feed in charging
The defect of the phenomenon that situation, electric vehicle be easy to cause charger to overheat and stop charging when charging provides a kind of electric vehicle charging
When prevent small storage battery feed method, to solve the above problems.
To achieve the above object, the invention provides the following technical scheme: a kind of electric vehicle prevents small storage battery from feeding when charging
Method, include the following steps:
(1) first after plugging charging gun, charger wakes up battery management system (BMS), entire car controller by rigid line
(VCU) and DC-DC converter (DCDC).
(2) then when charger and battery management system (BMS) normal communication, battery relay is closed, vehicle into
Enter charged state.
(3) when entire car controller (VCU) detects the charged state of charger and leading to for DC-DC converter (DCDC)
After news state is normal, it is closed motor preliminary filling relay；
(4) after entire car controller (VCU) detects that motor busbar voltage reaches the 90% of cell voltage, it is closed motor master
Positive relay is then turned off motor preliminary filling relay.
(5) after high pressure powers on, entire car controller (VCU) send DC-DC converter (DCDC) it is enabled, allow direct current-
DC converter (DCDC) is in operating mode, supplements low pressure electric quantity consumption, while charging to small storage battery.
(6) when entire car controller (VCU) detects charger when the temperature is excessively high, according to the radiating requirements of charger unlatching water
Pump and fan, radiate to charger.
(7) when charging terminates or charging complete, entire car controller (VCU), which closes DC-DC converter (DCDC), to be made
Can, the positive relay of motor master is simultaneously turned off, battery management system (BMS) disconnects the positive and negative relay of battery at this time.
(9) entire car controller (VCU) sends motor electric discharge instruction, and electric machine controller busbar voltage is made to drop to safe electricity rapidly
Pressure is following, it is ensured that high-voltage safety.
(10) after the completion of to be discharged, entire car controller (VCU), DC-DC converter (DCDC), battery management system
(BMS) enter dormant state.
As a preferred technical solution of the present invention, the type of cooling of the charger is water cooling.
As a preferred technical solution of the present invention, the entire car controller is powered using normalizing.
As a preferred technical solution of the present invention, the charging electromechanical source exports 12V.
As a preferred technical solution of the present invention, the Rated motor 60KW, peak value 120KW.
Compared with current technology, the beneficial effects of the present invention are: preventing the side of small storage battery feed when this kind of electric vehicle charging
Method, structure design is complete compact, using the present invention it is possible to prevente effectively from when traditional Vehicular charger is to power battery charging, by
Calorific value is larger when charger work, need to open cooling system, and in practical charging process, the 12V electricity of charger output
Electric current is smaller, electric quantity consumption required for being not enough to that cooling system is supported to work, and charging process time is longer, is easy to cause small
The case where storage battery is fed, the case where charger generates heat during the charging process has been effectively relieved in the present invention, to extend charger
Service life, the present invention solves the case where causing charging to stop because of charger overheat during the charging process, when shortening charging
Between.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is flowage structure schematic diagram of the invention；
Fig. 2 is control circuit theory structure schematic diagram of the invention；
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of electric vehicle prevents the side of small storage battery feed when charging
Method includes the following steps:
(1) first after plugging charging gun, charger wakes up battery management system (BMS), entire car controller by rigid line
(VCU) and DC-DC converter (DCDC).
(2) then when charger and battery management system (BMS) normal communication, battery relay is closed, vehicle into
Enter charged state.
(3) when entire car controller (VCU) detects the charged state of charger and leading to for DC-DC converter (DCDC)
After news state is normal, it is closed motor preliminary filling relay；
(4) after entire car controller (VCU) detects that motor busbar voltage reaches the 90% of cell voltage, it is closed motor master
Positive relay is then turned off motor preliminary filling relay.
(5) after high pressure powers on, entire car controller (VCU) send DC-DC converter (DCDC) it is enabled, allow direct current-
DC converter (DCDC) is in operating mode, supplements low pressure electric quantity consumption, while charging to small storage battery.
(6) when entire car controller (VCU) detects charger when the temperature is excessively high, according to the radiating requirements of charger unlatching water
Pump and fan, radiate to charger.
(7) when charging terminates or charging complete, entire car controller (VCU), which closes DC-DC converter (DCDC), to be made
Can, the positive relay of motor master is simultaneously turned off, battery management system (BMS) disconnects the positive and negative relay of battery at this time.
(9) entire car controller (VCU) sends motor electric discharge instruction, and electric machine controller busbar voltage is made to drop to safe electricity rapidly
Pressure is following, it is ensured that high-voltage safety.
(10) after the completion of to be discharged, entire car controller (VCU), DC-DC converter (DCDC), battery management system
(BMS) enter dormant state.
The type of cooling of charger is water cooling.Entire car controller is powered using normalizing.The electromechanical source that charges exports 12V.Motor
Specified 60KW, peak value 120KW.
Concrete principle: when preventing the method for small storage battery feed when charging using this kind of electric vehicle, charger passes through when working
While rigid line wakes up battery management system (BMS), need to wake up entire car controller (VCU), DC-DC converter
(DCDC), when (VCU) detects that vehicle is in charged state, it is successively closed electric machine controller preliminary filling, main positive relay, is passed through
It gives (DCDC) to enable, keeps (DCDC) in running order, charge to small storage battery, when charging end or charging complete, (VCU)
(DCDC) enabled closing is controlled, the positive relay of motor master is then turned off, motor is made to enter discharge condition, after the completion of to be discharged,
(DCDC) and (VCU) enters dormant state.
The method that small storage battery feed is prevented when the charging of this kind of electric vehicle, structure design is complete compact, uses the present invention can be with
When effectively avoiding traditional Vehicular charger to power battery charging, calorific value is larger when due to charger work, need to open scattered
Hot systems, and in practical charging process, the electric current of the 12V electricity of charger output is smaller, is not enough to support cooling system work institute
The electric quantity consumption needed, and charging process time is longer, the case where being easy to cause small storage battery to feed, the present invention, which has been effectively relieved, to fill
The case where motor generates heat during the charging process, to extend charger service life, the present invention is solved during the charging process
The case where causing charging to stop because of charger overheat, shorten the charging time.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of electric vehicle prevents small storage battery feed method when charging, which comprises the steps of:
(1) first after plugging charging gun, charger wakes up battery management system (BMS), entire car controller (VCU) by rigid line
And DC-DC converter (DCDC).
(2) then battery relay is closed when charger and battery management system (BMS) normal communication, vehicle, which enters, to be filled
Electricity condition.
(3) charged state of charger and the communication shape of DC-DC converter (DCDC) are detected when entire car controller (VCU)
After state is normal, it is closed motor preliminary filling relay；
(4) after entire car controller (VCU) detects that motor busbar voltage reaches the 90% of cell voltage, closure motor master just after
Electric appliance is then turned off motor preliminary filling relay.
(5) after high pressure powers on, entire car controller (VCU) send DC-DC converter (DCDC) it is enabled, allow DC-DC
Converter (DCDC) is in operating mode, supplements low pressure electric quantity consumption, while charging to small storage battery.
(6) when entire car controller (VCU) detects charger when the temperature is excessively high, according to the radiating requirements of charger open water pump and
Fan radiates to charger.
(7) when charging terminates or charging complete, entire car controller (VCU) is closed DC-DC converter (DCDC) and is enabled, together
When turn off the positive relay of motor master, at this time battery management system (BMS) disconnect the positive and negative relay of battery.
(9) entire car controller (VCU) send motor electric discharge instruction, make electric machine controller busbar voltage drop to rapidly safe voltage with
Under, it is ensured that high-voltage safety.
(10) after the completion of to be discharged, entire car controller (VCU), DC-DC converter (DCDC), battery management system (BMS)
Into dormant state.
2. a kind of electric vehicle according to claim 1 prevents small storage battery feed method when charging, which is characterized in that described
The type of cooling of charger is water cooling.
3. a kind of electric vehicle according to claim 1 prevents small storage battery feed method when charging, which is characterized in that described
Entire car controller is powered using normalizing.
4. a kind of electric vehicle according to claim 1 prevents small storage battery feed method when charging, which is characterized in that described
The electromechanical source that charges exports 12V.
5. a kind of electric vehicle according to claim 1 prevents small storage battery feed method when charging, which is characterized in that described
Rated motor 60KW, peak value 120KW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506761.9A CN109501636A (en) | 2018-12-10 | 2018-12-10 | A kind of electric vehicle prevents small storage battery feed method when charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506761.9A CN109501636A (en) | 2018-12-10 | 2018-12-10 | A kind of electric vehicle prevents small storage battery feed method when charging |
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| CN109501636A true CN109501636A (en) | 2019-03-22 |
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ID=65753121
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811506761.9A Pending CN109501636A (en) | 2018-12-10 | 2018-12-10 | A kind of electric vehicle prevents small storage battery feed method when charging |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110188372A (en) * | 2019-04-11 | 2019-08-30 | 汉腾汽车有限公司 | A kind of method of controlling switch of the positive relay of power battery master |
| CN113335069A (en) * | 2021-07-13 | 2021-09-03 | 奇瑞万达贵州客车股份有限公司 | Control charging method of pure electric bus whole vehicle controller |
| WO2022237237A1 (en) * | 2021-05-11 | 2022-11-17 | 浙江三一装备有限公司 | Method and apparatus for controlling charging, powering on and powering off of electric vehicle, and electric vehicle |
| CN115416597A (en) * | 2022-09-30 | 2022-12-02 | 东风汽车股份有限公司 | Vehicle-mounted DCDC (direct current DC) awakening method and device for pure electric vehicle |
| CN115583178A (en) * | 2022-11-04 | 2023-01-10 | 合众新能源汽车有限公司 | Running state monitoring system of power battery pack |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110188372A (en) * | 2019-04-11 | 2019-08-30 | 汉腾汽车有限公司 | A kind of method of controlling switch of the positive relay of power battery master |
| WO2022237237A1 (en) * | 2021-05-11 | 2022-11-17 | 浙江三一装备有限公司 | Method and apparatus for controlling charging, powering on and powering off of electric vehicle, and electric vehicle |
| CN113335069A (en) * | 2021-07-13 | 2021-09-03 | 奇瑞万达贵州客车股份有限公司 | Control charging method of pure electric bus whole vehicle controller |
| CN115416597A (en) * | 2022-09-30 | 2022-12-02 | 东风汽车股份有限公司 | Vehicle-mounted DCDC (direct current DC) awakening method and device for pure electric vehicle |
| CN115416597B (en) * | 2022-09-30 | 2023-09-12 | 东风汽车股份有限公司 | Vehicle-mounted DCDC wake-up method and device for pure electric vehicle |
| CN115583178A (en) * | 2022-11-04 | 2023-01-10 | 合众新能源汽车有限公司 | Running state monitoring system of power battery pack |
| CN115583178B (en) * | 2022-11-04 | 2024-04-26 | 合众新能源汽车股份有限公司 | Running state monitoring system of power battery pack |
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