CN101604855A - A kind of pure electric automobile DC-DC converter enable control method - Google Patents
A kind of pure electric automobile DC-DC converter enable control method Download PDFInfo
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- CN101604855A CN101604855A CNA2009101365702A CN200910136570A CN101604855A CN 101604855 A CN101604855 A CN 101604855A CN A2009101365702 A CNA2009101365702 A CN A2009101365702A CN 200910136570 A CN200910136570 A CN 200910136570A CN 101604855 A CN101604855 A CN 101604855A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000011217 control strategy Methods 0.000 claims abstract description 9
- 238000007726 management method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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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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- 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
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- Electric Propulsion And Braking For Vehicles (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of control method that enables of pure electric automobile DC-DC converter, by judgement to each input parameter state, whether decision-making DC-DC transducer work enabled state and DC-DC control logic module are ready to closed condition, and described input parameter comprises: high-tension battery connection status signal, maximum discharge power and the high-tension battery state-of-charge of allowing of high-tension battery.Under motor stall operating mode, allow discharge power to be higher than the suitable maximum discharge power of high-tension battery when the high-tension battery of high-tension battery controller decision-making is maximum, the DC-DC transducer can be enabled; When the state-of-charge of high-tension battery state-of-charge above the suitable work of high-tension battery, the DC-DC transducer can be enabled; If entire car controller is not requested to turn-off all control strategies, the DC-DC transducer is only and can be enabled.Adopt the control method that enables of the present invention, can provide best management, thereby improve the efficient of car load electrical system for the DC-DC transducer.
Description
Technical field
The invention belongs to the Control of Electric Vehicles field,, realize management, make the work that the electric automobile middle low-pressure system is stable, reliable, safe electric automobile mesohigh battery and A-battery by to current/direct-current conversion device control.
Background technology
Along with The development in society and economy, the energy and environmental issue that the traditional combustion engine automobile is brought cause the concern of countries in the world gradually.Because world petroleum resource is deficient day by day, and emission of automobile wastes and the environmental pollution that causes, both at home and abroad motor corporation all at the demand of effort new forms of energy as power source, but, had an optimistic view of by the various countries expert as the pure electric automobile of main source of energy with high performance battery with regard to present technology.Certainly, China also will develop the importance of pure electric automobile as the national energy strategy, and classify national 863 Program key project as.
For pure electric automobile, high-tension battery is unique power source of car load.Under the electric automobile operating condition, car load electric equipment electricity consumption power supply and low tension battery charge power supply all need be realized by the DC-DC transducer.So for hybrid vehicle, the effect of DC-DC transducer is exactly:
Power to low pressure 12V electrical system from high-voltage electric system;
Give low pressure 12V battery charge;
Adjustment, control electrical system voltage status;
The Fault Identification in the DC-DC transducer and the transmission of fault message;
Satisfy the demand for control of whole-control system hardware and software.
For orthodox car, the car load electric equipment of pure electric automobile has increased a lot, under some limiting case; load current that might car load has exceeded scope; in order to protect the DC-DC transducer, added a fuse in its outside, but such protection is nowhere near.
Summary of the invention
In order to protect the DC-DC transducer; the invention discloses a kind of control method that enables of pure electric automobile DC-DC converter; by judgement to each input parameter state; whether decision-making DC-DC transducer work enabled state and DC-DC control logic module are ready to closed condition, and described input parameter comprises: high-tension battery connection status signal, maximum discharge power and the high-tension battery state-of-charge of allowing of high-tension battery.
Further, under motor stall operating mode, allow discharge power to be higher than the suitable maximum discharge power of high-tension battery when the high-tension battery of high-tension battery controller decision-making is maximum, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
Further, when the state-of-charge of high-tension battery state-of-charge above the suitable work of high-tension battery, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
Further, described input parameter also comprises master controller control strategy turn-off request signal, if entire car controller is not requested to turn-off all control strategies, the DC-DC transducer is only and can be enabled.
Further, described input parameter comprises that also the DC-DC transducer turn-offs request signal in the integrated vehicle control tactics fault management submodule, if integrated vehicle control tactics fault management submodule is not asked DC-DC transducer work cut-off signals, the DC-DC transducer is only and can be enabled.
Further, when DC-DC transducer operating state is not enabled, just think that all set corresponding all control logics of entire car controller of DC-DC transducer are turned off request.
The invention also discloses a kind of method for diagnosing faults of pure electric automobile DC-DC converter, judge by state relevant parameter, whether diagnosis DC-DC transducer breaks down, and described relevant parameter comprises: output voltage values, A-battery voltage and carload current value.According to ambient temperature DC-DC converter output voltage target control value is set, and the actual output voltage worst error value between the voltage target controlling value therewith, when worst error value and the target control value sum of the low pressure 12V battery actual voltage value that passes through filtering greater than setting, and the DC-DC transducer is in work enabled state following time again, just thinks that having fault in DC-DC converter output voltage control logic takes place.
Further, be lower than the A-battery fault trigger voltage value of setting when the A-battery virtual voltage, and the electric real load current value of the car load electric load current fault of the car load trigger current value that is lower than setting, and the DC-DC transducer just thinks that having fault in the DC-DC transducer charging control takes place when being in the work enabled state.
Further, when DC-DC transducer condition of work hardware judged result and software controlling strategies enable the result of decision when inconsistent, just think that DC-DC transducer operating state is in non-good situations.
Adopt the control method that enables of the present invention, can provide best management, thereby improve the efficient of car load electrical system for the DC-DC transducer.Adopt method for diagnosing faults disclosed in this invention, can fast and effeciently detect the fault that may occur, thereby realize protection better the DC-DC transducer.
Description of drawings
Fig. 1: DC-DC transducer and system's johning knot composition;
Fig. 2: the DC-DC transducer enables control flow chart;
Fig. 3: DC-DC transducer Troubleshooting Flowchart.
Embodiment
Fig. 1 mainly illustrates the relation of pure electric automobile high-voltage electric system, low-voltage electric system and DC-DC transducer, has also reflected the system configuration that pure electric automobile is basic.The high-voltage electric system loop of pure electric automobile mainly is made up of motor, inverter and high-tension battery, and the effect of inverter is to realize conversion mutually between three-phase electricity and direct current.The low-voltage electrical loop mainly comprises the various electronic load on storage battery, the pure electric automobile.It is used for the car load electrical loads that the effect of DC-DC transducer is exactly that 250 volts of high-voltage electric system with pure electric automobile are converted to 12 volts of low-voltage electric systems.In order to improve car load electrical system efficient, fully the unique energy source of car load there is individual best management, the DC-DC transducer here needs entire car controller that it is controlled.
The DC-DC of being transducer shown in Figure 2 enables the control strategy flow chart, and the input parameter that this strategy needs comprises:
◆ master controller control strategy turn-off request signal;
◆ high-tension battery connection status signal;
◆ the maximum discharge power that allows of high-tension battery;
◆ high-tension battery state-of-charge SOC (State Of Charge);
◆ DC-DC transducer self hardware logic failure judgement signal;
◆ integrated vehicle control tactics fault management submodule DC-DC transducer turn-offs request signal.
If entire car controller is not requested to turn-off all control strategies, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
If integrated vehicle control tactics fault management submodule is not asked DC-DC transducer work cut-off signals, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
If high-tension battery connection status signal is in connection status, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
Under pure electric automobile motor stall operating mode, if the maximum discharge power of the battery of high-tension battery controller decision-making is higher than the maximum discharge power that high-tension battery is fit to, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
According to high-tension battery state-of-charge decision-making DC-DC transducer enabled state, if the high-tension battery state-of-charge surpasses the state-of-charge that high-tension battery is fit to work, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
If DC-DC transducer operating state is not enabled, the DC-DC transducer just can be considered to all set corresponding all control logics of entire car controller and be turned off request so.
Shown in Figure 3 is DC-DC transducer Troubleshooting Flowchart.
The first, DC-DC converter output voltage desired value is an adjustment controlling value according to ambient temperature, can set certain actual output voltage worst error value of target control voltage therewith.If the low pressure 12V battery actual voltage value of process filtering is greater than worst error and the target control value sum set, and the DC-DC transducer is in again under the work enabled state, so just can think that having fault in DC-DC converter output voltage control logic takes place.
Second, if the A-battery virtual voltage is lower than the A-battery fault trigger voltage value of setting, and the electric real load current value of the car load electric load current fault of the car load trigger current value that is lower than setting, and the DC-DC transducer is in the work enabled state, so just can think that having fault in the DC-DC transducer charging control takes place.
The 3rd, if DC-DC transducer condition of work hardware judged result and software controlling strategies enable the result of decision when inconsistent, just can think that DC-DC transducer operating state is in non-good situations.
At last, if the above any fault through trembling the resilience decision-making in the past is judged out, DC-DC transducer control strategy will be determined to have in the DC-DC transducer fault and be taken place so.
Claims (6)
1, a kind of pure electric automobile DC-DC converter enables control method, it is characterized in that, by judgement to each input parameter state, whether decision-making DC-DC transducer work enabled state and DC-DC control logic module are ready to closed condition, and described input parameter comprises: high-tension battery connection status signal, maximum discharge power and the high-tension battery state-of-charge of allowing of high-tension battery.
2, the control method that enables according to claim 1, it is characterized in that: under motor stall operating mode, when the maximum discharge power that allows of the high-tension battery of high-tension battery controller decision-making is higher than the maximum discharge power that high-tension battery is fit to, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
3, the control method that enables according to claim 3 is characterized in that: when the state-of-charge of high-tension battery state-of-charge above the suitable work of high-tension battery, the DC-DC transducer can be enabled, otherwise the DC-DC transducer can not be enabled.
4, the control method that enables according to claim 3, it is characterized in that, described input parameter also comprises master controller control strategy turn-off request signal, if entire car controller is not requested to turn-off all control strategies, the DC-DC transducer is only and can be enabled.
5, according to claim 3 or the 4 described control methods that enable, it is characterized in that, described input parameter comprises that also the DC-DC transducer turn-offs request signal in the integrated vehicle control tactics fault management submodule, if integrated vehicle control tactics fault management submodule is not asked DC-DC transducer work cut-off signals, the DC-DC transducer is only and can be enabled.
6, according to each described control method that enables of claim 3-5, it is characterized in that, when DC-DC transducer operating state is not enabled, just think that all set corresponding all control logics of entire car controller of DC-DC transducer are turned off request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101365702A CN101604855A (en) | 2009-05-08 | 2009-05-08 | A kind of pure electric automobile DC-DC converter enable control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101365702A CN101604855A (en) | 2009-05-08 | 2009-05-08 | A kind of pure electric automobile DC-DC converter enable control method |
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| CN101604855A true CN101604855A (en) | 2009-12-16 |
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| CNA2009101365702A Pending CN101604855A (en) | 2009-05-08 | 2009-05-08 | A kind of pure electric automobile DC-DC converter enable control method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138563A (en) * | 2013-02-01 | 2013-06-05 | 深圳市五洲龙汽车有限公司 | Control method and control system of direct current-direct current conversion unit |
| CN103454543A (en) * | 2013-09-25 | 2013-12-18 | 奇瑞汽车股份有限公司 | Method for diagnosing faults of bidirectional DC-DC converter |
| CN103832290A (en) * | 2013-12-23 | 2014-06-04 | 惠州市亿能电子有限公司 | DC/DC control method in working mode |
| CN104092365A (en) * | 2010-12-29 | 2014-10-08 | 上海汽车集团股份有限公司 | Enabling control method of direct-current high-voltage and low-voltage converter and voltage outputting control method |
| CN105109354A (en) * | 2015-09-24 | 2015-12-02 | 奇瑞汽车股份有限公司 | Mode control system and method for plug-in hybrid electric vehicle direct current converter |
| CN104859466B (en) * | 2014-02-26 | 2017-03-15 | 广州汽车集团股份有限公司 | A kind of control method of DC/DC converters output voltage and device |
| CN106696752A (en) * | 2017-02-22 | 2017-05-24 | 重庆长安汽车股份有限公司 | Method used for controlling DC-to-DC converter |
| CN112019040A (en) * | 2020-08-13 | 2020-12-01 | 东风汽车股份有限公司 | Direct current conversion control system and control method for electric automobile |
| CN117644769A (en) * | 2024-01-29 | 2024-03-05 | 质子汽车科技有限公司 | High-voltage power-off control method and system based on whole vehicle discharge safety |
-
2009
- 2009-05-08 CN CNA2009101365702A patent/CN101604855A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092365A (en) * | 2010-12-29 | 2014-10-08 | 上海汽车集团股份有限公司 | Enabling control method of direct-current high-voltage and low-voltage converter and voltage outputting control method |
| CN104092365B (en) * | 2010-12-29 | 2017-08-25 | 上海汽车集团股份有限公司 | The enable control method and output voltage control method of direct current converter |
| CN103138563B (en) * | 2013-02-01 | 2018-11-20 | 深圳市五洲龙汽车有限公司 | The control method and control system of direct current-direct current conversion unit |
| CN103138563A (en) * | 2013-02-01 | 2013-06-05 | 深圳市五洲龙汽车有限公司 | Control method and control system of direct current-direct current conversion unit |
| CN103454543B (en) * | 2013-09-25 | 2016-03-16 | 奇瑞汽车股份有限公司 | A kind of method for diagnosing faults of bi-directional DC-DC converter |
| CN103454543A (en) * | 2013-09-25 | 2013-12-18 | 奇瑞汽车股份有限公司 | Method for diagnosing faults of bidirectional DC-DC converter |
| CN103832290A (en) * | 2013-12-23 | 2014-06-04 | 惠州市亿能电子有限公司 | DC/DC control method in working mode |
| CN104859466B (en) * | 2014-02-26 | 2017-03-15 | 广州汽车集团股份有限公司 | A kind of control method of DC/DC converters output voltage and device |
| CN105109354A (en) * | 2015-09-24 | 2015-12-02 | 奇瑞汽车股份有限公司 | Mode control system and method for plug-in hybrid electric vehicle direct current converter |
| CN106696752A (en) * | 2017-02-22 | 2017-05-24 | 重庆长安汽车股份有限公司 | Method used for controlling DC-to-DC converter |
| CN106696752B (en) * | 2017-02-22 | 2019-02-19 | 重庆长安汽车股份有限公司 | A method of for controlling DC-DC converter |
| CN112019040A (en) * | 2020-08-13 | 2020-12-01 | 东风汽车股份有限公司 | Direct current conversion control system and control method for electric automobile |
| CN112019040B (en) * | 2020-08-13 | 2021-10-22 | 东风汽车股份有限公司 | Direct current conversion control system and control method for electric automobile |
| CN117644769A (en) * | 2024-01-29 | 2024-03-05 | 质子汽车科技有限公司 | High-voltage power-off control method and system based on whole vehicle discharge safety |
| CN117644769B (en) * | 2024-01-29 | 2024-05-10 | 质子汽车科技有限公司 | High-voltage power-off control method and system based on whole vehicle discharge safety |
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Open date: 20091216 |