CN101545940A - DC-DC converter fault diagnosis method for pure electric automobile - Google Patents
DC-DC converter fault diagnosis method for pure electric automobile Download PDFInfo
- Publication number
- CN101545940A CN101545940A CN200910136571A CN200910136571A CN101545940A CN 101545940 A CN101545940 A CN 101545940A CN 200910136571 A CN200910136571 A CN 200910136571A CN 200910136571 A CN200910136571 A CN 200910136571A CN 101545940 A CN101545940 A CN 101545940A
- Authority
- CN
- China
- Prior art keywords
- converter
- value
- voltage
- fault
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000003745 diagnosis Methods 0.000 title claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 description 6
- 238000007726 management method Methods 0.000 description 6
- 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
- 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
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Images
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a DC-DC converter fault diagnosis method for pure electric automobile. The DC-DC converter is diagnosed if there has some fault according to corresponding parameter state as output voltage value, voltage of low voltage battery and loaded current value of whole automobile; output voltage target control value of DC-DC converter is set according to environment temperature, and maximum error of the actual output voltage and target voltage control value is set; when actual voltage value of filtered low voltage 12V battery is higher than sum of set maximum error and target control value, and DC-DC converter is in working state, it is considered that fault occurs in DC-DC converter output voltage control logic. The fault diagnosis method of the invention can quickly and effectively detect possible fault, thereby provides better protection for DC-DC converter.
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 main project as.
For pure electric automobile, high-tension battery is unique power source of car load.Under the electric automobile operating condition, car load electrical equipment electricity consumption power supply and low tension battery charge power supply all need be realized by the DC-DC converter.So for hybrid vehicle, the effect of DC-DC converter 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 converter and the transmission of failure message;
Satisfy the demand for control of whole-control system hardware and software.
For orthodox car, the car load electrical 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 converter, added a fuse in its outside, but such protection is nowhere near.
Summary of the invention
In order to protect the DC-DC converter; the invention discloses a kind of method for diagnosing faults of pure electric automobile DC-DC converter; judge by state relevant parameter; whether diagnosis DC-DC converter breaks down, and described relevant parameter comprises: output voltage values, A-battery voltage and carload current value.According to environment temperature DC-DC converter output voltage target control value is set, and the actual output voltage maximum error value between the voltage target controlling value therewith, when maximum 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 converter is in work enabled state following time again, just thinks that having fault in DC-DC converter output voltage steering 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 converter just thinks that having fault in the DC-DC converter charging control takes place when being in the work enabled state.
Further, when DC-DC converter condition of work hardware judged result and software controlling strategies enable the result of decision when inconsistent, just think that DC-DC converter duty is in non-good situations.
The invention also 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 converter 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 converter can be enabled, otherwise the DC-DC converter 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 converter can be enabled, otherwise the DC-DC converter 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 converter is only and can be enabled.
Further, described input parameter comprises that also the DC-DC converter 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 converter work cut-off signals, the DC-DC converter is only and can be enabled.
Further, when DC-DC converter duty is not enabled, just think that all set corresponding all steering logics of entire car controller of DC-DC converter are turned off request.
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 converter.
Description of drawings
Fig. 1: DC-DC converter and system's johning knot composition;
Fig. 2: the DC-DC converter enables control flow chart;
Fig. 3: DC-DC converter Troubleshooting Flowchart.
Embodiment
Fig. 1 mainly illustrates the relation of pure electric automobile high-voltage electric system, low-voltage electric system and DC-DC converter, has also reflected the system architecture 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 accumulator, the pure electric automobile.It is used for the car load electrical loads that the effect of DC-DC converter 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 converter here needs entire car controller that it is controlled.
The DC-DC of being converter shown in Figure 2 enables the control strategy process flow diagram, 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 converter self hardware logic failure judgement signal;
◆ integrated vehicle control tactics fault management submodule DC-DC converter turn-offs request signal.
If entire car controller is not requested to turn-off all control strategies, the DC-DC converter can be enabled, otherwise the DC-DC converter can not be enabled.
If integrated vehicle control tactics fault management submodule is not asked DC-DC converter work cut-off signals, the DC-DC converter can be enabled, otherwise the DC-DC converter can not be enabled.
If high-tension battery connection status signal is in connection status, the DC-DC converter can be enabled, otherwise the DC-DC converter 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 converter can be enabled, otherwise the DC-DC converter can not be enabled.
According to high-tension battery state-of-charge decision-making DC-DC converter 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 converter can be enabled, otherwise the DC-DC converter can not be enabled.
If DC-DC converter duty is not enabled, the DC-DC converter just can be considered to all set corresponding all steering logics of entire car controller and be turned off request so.
Shown in Figure 3 is the DC-DC diagnostic flow chart.
The first, DC-DC converter output voltage desired value is an adjustment controlling value according to environment temperature, can set certain actual output voltage maximum error value of target control voltage therewith.If the low pressure 12V battery actual voltage value of process filtering is greater than maximum error and the target control value sum set, and the DC-DC converter is in again under the work enabled state, so just can think that having fault in DC-DC converter output voltage steering 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 converter is in the work enabled state, so just can think that having fault in the DC-DC converter charging control takes place.
The 3rd, if DC-DC converter condition of work hardware judged result and software controlling strategies enable the result of decision when inconsistent, just can think that DC-DC converter duty 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 converter control strategy will be determined to have in the DC-DC converter fault and be taken place so.
Claims (4)
1, a kind of method for diagnosing faults of pure electric automobile DC-DC converter, it is characterized in that, judge by the state to relevant parameter whether diagnosis DC-DC converter breaks down, described relevant parameter comprises: output voltage values, A-battery voltage and carload current value.
2, method for diagnosing faults according to claim 1, it is characterized in that, according to environment temperature DC-DC converter output voltage target control value is set, and the actual output voltage maximum error value between the voltage target controlling value therewith, when maximum 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 converter is in work enabled state following time again, just thinks that having fault in DC-DC converter output voltage steering logic takes place.
3, method for diagnosing faults according to claim 1 and 2, it is characterized in that, 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 converter just thinks that having fault in the DC-DC converter charging control takes place when being in the work enabled state.
4, according to each described method for diagnosing faults of claim 1-3, it is characterized in that, when DC-DC converter condition of work hardware judged result and software controlling strategies enable the result of decision when inconsistent, just think that DC-DC converter duty is in non-good situations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910136571A CN101545940A (en) | 2009-05-08 | 2009-05-08 | DC-DC converter fault diagnosis method for pure electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910136571A CN101545940A (en) | 2009-05-08 | 2009-05-08 | DC-DC converter fault diagnosis method for pure electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101545940A true CN101545940A (en) | 2009-09-30 |
Family
ID=41193186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910136571A Pending CN101545940A (en) | 2009-05-08 | 2009-05-08 | DC-DC converter fault diagnosis method for pure electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101545940A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916107A (en) * | 2010-08-11 | 2010-12-15 | 奇瑞汽车股份有限公司 | Control method and control device for fault diagnosis and treatment of electric automobile |
| CN102621502A (en) * | 2012-03-29 | 2012-08-01 | 首都师范大学 | Fault monitoring and forecasting method of direct current (DC)-direct current (DC) power source system |
| 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 |
| CN103241136A (en) * | 2013-04-27 | 2013-08-14 | 深圳市汇川技术股份有限公司 | Driving control circuit for low-voltage electric vehicle |
| 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 |
| CN103841717A (en) * | 2012-11-21 | 2014-06-04 | 赵元雷 | Pure electric vehicle DC-DC system indicating lamp formed by transforming fuel-powered vehicle charge lamp |
| 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 |
| CN106019168A (en) * | 2016-05-10 | 2016-10-12 | 清华大学 | Testing system for DC-DC converter of fuel cell vehicle |
| CN108398608A (en) * | 2018-02-01 | 2018-08-14 | 阿尔特汽车技术股份有限公司 | A kind of electric vehicle DCDC off-line test methods based on entire car controller |
| CN109001585A (en) * | 2017-06-07 | 2018-12-14 | 现代自动车株式会社 | System and method for diagnosing battery connection status |
| CN109398093A (en) * | 2018-12-07 | 2019-03-01 | 安徽华菱汽车有限公司 | A kind of control method of electronic radiator fan, system, device and pure electric vehicle |
| CN112721641A (en) * | 2020-12-17 | 2021-04-30 | 联合汽车电子有限公司 | Fault diagnosis method and fault diagnosis device for automobile voltage converter |
| CN113783243A (en) * | 2021-07-26 | 2021-12-10 | 岚图汽车科技有限公司 | Low-voltage storage battery charging circuit and fault detection method thereof |
| CN113805097A (en) * | 2020-06-17 | 2021-12-17 | 广州汽车集团股份有限公司 | DC/DC broken line detection method and device, controller and automobile |
| CN114167191A (en) * | 2021-12-16 | 2022-03-11 | 深圳市道通科技股份有限公司 | Automobile power converter detection method and system and computer equipment |
| CN114442597A (en) * | 2022-01-29 | 2022-05-06 | 中国第一汽车股份有限公司 | Voltage conversion controller test method, device, system, equipment and storage medium |
| WO2023160412A1 (en) * | 2022-02-22 | 2023-08-31 | 北京车和家汽车科技有限公司 | Vehicle-mounted direct-current to direct-current converter state identification method and apparatus, device, and medium |
-
2009
- 2009-05-08 CN CN200910136571A patent/CN101545940A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916107A (en) * | 2010-08-11 | 2010-12-15 | 奇瑞汽车股份有限公司 | Control method and control device for fault diagnosis and treatment of electric automobile |
| 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 |
| CN102621502B (en) * | 2012-03-29 | 2016-09-14 | 首都师范大学 | A kind of DC-DC power source system failure monitoring and Forecasting Methodology |
| CN102621502A (en) * | 2012-03-29 | 2012-08-01 | 首都师范大学 | Fault monitoring and forecasting method of direct current (DC)-direct current (DC) power source system |
| CN103841717A (en) * | 2012-11-21 | 2014-06-04 | 赵元雷 | Pure electric vehicle DC-DC system indicating lamp formed by transforming fuel-powered vehicle charge lamp |
| 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 |
| 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 |
| CN103241136A (en) * | 2013-04-27 | 2013-08-14 | 深圳市汇川技术股份有限公司 | Driving control circuit for low-voltage electric vehicle |
| CN103241136B (en) * | 2013-04-27 | 2015-08-12 | 深圳市汇川技术股份有限公司 | Low-voltage electromobile Drive and Control Circuit |
| 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 |
| 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 |
| CN106019168A (en) * | 2016-05-10 | 2016-10-12 | 清华大学 | Testing system for DC-DC converter of fuel cell vehicle |
| CN109001585B (en) * | 2017-06-07 | 2022-06-24 | 现代自动车株式会社 | System and method for diagnosing battery connection state |
| CN109001585A (en) * | 2017-06-07 | 2018-12-14 | 现代自动车株式会社 | System and method for diagnosing battery connection status |
| CN108398608A (en) * | 2018-02-01 | 2018-08-14 | 阿尔特汽车技术股份有限公司 | A kind of electric vehicle DCDC off-line test methods based on entire car controller |
| CN109398093A (en) * | 2018-12-07 | 2019-03-01 | 安徽华菱汽车有限公司 | A kind of control method of electronic radiator fan, system, device and pure electric vehicle |
| CN109398093B (en) * | 2018-12-07 | 2023-08-15 | 安徽华菱汽车有限公司 | Control method, system and device of electronic cooling fan and pure electric vehicle |
| CN113805097A (en) * | 2020-06-17 | 2021-12-17 | 广州汽车集团股份有限公司 | DC/DC broken line detection method and device, controller and automobile |
| CN112721641A (en) * | 2020-12-17 | 2021-04-30 | 联合汽车电子有限公司 | Fault diagnosis method and fault diagnosis device for automobile voltage converter |
| CN113783243A (en) * | 2021-07-26 | 2021-12-10 | 岚图汽车科技有限公司 | Low-voltage storage battery charging circuit and fault detection method thereof |
| CN114167191A (en) * | 2021-12-16 | 2022-03-11 | 深圳市道通科技股份有限公司 | Automobile power converter detection method and system and computer equipment |
| CN114442597A (en) * | 2022-01-29 | 2022-05-06 | 中国第一汽车股份有限公司 | Voltage conversion controller test method, device, system, equipment and storage medium |
| WO2023160412A1 (en) * | 2022-02-22 | 2023-08-31 | 北京车和家汽车科技有限公司 | Vehicle-mounted direct-current to direct-current converter state identification method and apparatus, device, and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101545940A (en) | DC-DC converter fault diagnosis method for pure electric automobile | |
| CN101604855A (en) | A kind of pure electric automobile DC-DC converter enable control method | |
| US9899843B2 (en) | Energy storage system with range extender and energy management and control method | |
| CN101141014B (en) | Direct current converting device control method of mixed power vehicle | |
| US7923866B2 (en) | Power supply system and vehicle including the same, and method of controlling the same | |
| CN100592599C (en) | Fault diagnosis method for boosting hybrid power vehicle energy utilization ratio method | |
| KR100829307B1 (en) | Fault diagnosis control method for high voltage relay of hybrid electric vehicle | |
| KR101927176B1 (en) | Method and device for controlling output of low voltage DC-DC converter in environmentally friendly vehicle | |
| CN102545573B (en) | Enabling control method and output voltage control method of direct current-direct current converter (DC-DC converter) | |
| CN102270866A (en) | Vehicle power management system | |
| CN103231662A (en) | Control method of high reliability fuel cell car power system | |
| CN204956144U (en) | High voltage power distribution system of fuel cell big bus car | |
| DE102016117704B4 (en) | Vehicle and charging control method of a vehicle | |
| CN110696814B (en) | Power supply control method and device for hybrid electric vehicle | |
| CN103552479A (en) | Vehicle power assembly and control circuit thereof | |
| CN104648158A (en) | High-voltage load management control system of hybrid electrical vehicle and control method thereof | |
| CN112659969A (en) | Double-branch power battery control system and method | |
| CN104092365A (en) | Enabling control method of direct-current high-voltage and low-voltage converter and voltage outputting control method | |
| CN111546938A (en) | Vehicle hybrid storage battery management system and method | |
| US20100145561A1 (en) | Method for preventing secondary overvoltage-breakage in a hybrid vehicle | |
| CN106696752A (en) | Method used for controlling DC-to-DC converter | |
| CN203713587U (en) | Vehicle power unit and control circuit thereof | |
| CN112644332A (en) | Electric automobile energy management system and method and automobile | |
| KR20230016111A (en) | Low voltage dc-dc converter of environmentally friendly vehicle, and method for outputting constant voltage using the same | |
| CN108177615B (en) | Energy management system based on super capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090930 |