CN1996705B - DC-DC conversion control system and control method of the mixed driven car - Google Patents
DC-DC conversion control system and control method of the mixed driven car Download PDFInfo
- Publication number
- CN1996705B CN1996705B CN2006101662673A CN200610166267A CN1996705B CN 1996705 B CN1996705 B CN 1996705B CN 2006101662673 A CN2006101662673 A CN 2006101662673A CN 200610166267 A CN200610166267 A CN 200610166267A CN 1996705 B CN1996705 B CN 1996705B
- Authority
- CN
- China
- Prior art keywords
- transducer
- power
- soc
- vehicle
- entire car
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 title abstract description 6
- 238000001514 detection method Methods 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
This invention relates to one mixture dynamic mobile DC to DC conversion control system and its method, which comprises high voltage dynamic power system and low voltage mobile electrical system and is characterized by the following parts: converter is connected to controller through one set of signal wire to combine converter and controller to fulfill control and execution, wherein, the converter determines the its work status according to low voltage electrical system and high voltage battery status and environment temperature and itself factors.
Description
Technical field:
The present invention relates to a kind of DC-DC (DC-to-DC) conversion method of hybrid vehicle, and particularly the hybrid vehicle high voltage power supply is to the DC-DC switching control system and the control method thereof of low-voltage electric system power supply.
Background technology:
At present, cleaning vehicles efficient, energy-saving and environmental protection just become the automobile industry new development trend.For this reason, hybrid vehicle (Hybrid Electric Vehicle, abbreviation HEV) is because of it has the low emission advantage of electric motor car concurrently with the high-energy-density advantage of internal-combustion engines vehicle more and more receives publicity, and becomes one of new vehicle that the current stage researches and develops unexpectedly mutually.(for example: motor) be installed in simultaneously on the automobile to vehicle provides actuating force, on the described mixed power car, auxiliary power unit is actually a high power motor to so-called hybrid vehicle with low-powered engine and auxiliary power source exactly.Exactly conventional engines is done for a short time as far as possible, allowed a part of power bear by electrokinetic cell-electric motor system.It is long that this mixed power plant had both been brought into play the engine continuous working period, the advantage of good dynamic property can be brought into play pollution-free, the low noise benefit of motor again, the two collaborative work, learn from other's strong points to offset one's weaknesses, promptly keep desired vehicle power can reduce fuel consume again.The generation of hybrid vehicle can effectively solve the energy and the environmental issue that the Hyundai Motor industry is brought, the power of the hybrid electric vehicle engine generally engine than at the same level is little, by reasonable control to engine and motor, make and guarantee that engine often is in running under the most effective state by the two cooperating.
In the DC-DC coverter for mixed power vehicle schemes that adopt air-cooled independent installation, on control method, adopt the DC-DC transducer independently to control or the entire car controller assist control both at home and abroad more.There is the shortcoming that volume is big, be difficult for installation in air-cooled DC-DC transducer; Independently be controlled at design after, should not change the drawback of control method and controllability, upgradability difference.Extensively retrieve at the problems referred to above, do not find relevant solution as yet.
Summary of the invention:
Purpose of the present invention is exactly the shortcoming that exists in the prior art for overcoming, and utilizes entire car controller to realize dynamically adjusting the output characteristic of DC-DC converting system, makes the high voltage power battery provide electric energy to be in the optimum state of control to the low pressure vehicle-mounted electrical system.
To achieve these goals, the present invention has adopted following technical scheme:
The DC-DC switching control system of hybrid vehicle, comprise high voltage power power-supply system and low pressure vehicle-mounted electrical system, be associated with the DC-DC transducer between high voltage power power-supply system and the low pressure vehicle-mounted electrical system, it is characterized in that: the DC-DC transducer is connected with mixed power entire car controller by one group of holding wire, the various signals that the DC-DC transducer needs can shared entire car controller in corresponding transducer, finish the control and the diagnosis of DC-DC transducer by entire car controller.The DC-DC transducer mainly passes through holding wire DC-DC enable, DC-DC set, and DC-DC OK, DC-DC load, DC-DC ref is connected with mixed power entire car controller.
The employed control method of DC-DC switching control system according to above-mentioned hybrid vehicle is characterized in that having adopted the following step:
Detection also judges whether the A-battery in the low pressure Vehicular power system needs charging;
If do not need charging, then close the DC-DC transducer;
Charging is if desired then obtained state-of-charge value SOC from the electrokinetic cell of power battery management system by the CAN net;
When SOC＜=50%, close the DC-DC transducer;
When 70%＞SOC＞50%, and engine running, allow to open the DC-DC transducer;
When 80%＞SOC＞70%, allow out the DC-DC transducer.
The essence of above-mentioned control method is: DC-DC transducer and mixed power entire car controller are combined control and the execution of finishing jointly the DC-DC transducer, the DC-DC transducer decides the operating state of DC-DC transducer according to the state factor of operating state, ambient temperature and the DC-DC transducer of state-of-charge, engine and the big motor of the need for electricity of vehicle-mounted low-voltage electric system, high voltage power battery itself, and the DC-DC transducer will be controlled the output characteristic of DC-DC transducer dynamically according to these factors.
Because in hybrid vehicle, reduce the load of engine accessory power rating as far as possible, be to reduce the effective way that fuel consume improves engine operation efficient.Owing on hybrid vehicle, have electric system of high voltage direct current and the electric system of low-voltage direct simultaneously, cancelled the small generators of former car among the present invention, DC-DC (DC-to-DC) converting system that has self-diagnostic function with a cover replaces original small generators.This cover system can become the voltage that is complementary with the automobile low-voltage electric system to high-tension electricity by step-down, to the low-voltage electric system power supply with to little charge in batteries.
The invention has the advantages that: 1, the cancellation small generators can further reduce the load of hybrid electric vehicle engine, can give full play to the advantage of hybrid vehicle like this, improves high voltage power power supply energy utilance, further reduces the consumption of vehicle fuel; 2, the DC-DC among the present invention (DC-to-DC) converting system control method makes this cover system have high conversion efficiency (its conversion efficiency can reach more than 90%), high power density, high reliability, antijamming capability is strong, output voltage and power output are controlled, characteristics such as low cost.
Description of drawings:
Fig. 1 is DC-DC transducer and entire car controller catenation principle block diagram;
Fig. 2 is a DC-DC conversion switching control method flow chart;
Fig. 3 is maximum safe working load of DC-DC transducer and power battery charged state graph of a relation;
Embodiment:
As shown in Figure 1, DC-DC converting system among the present invention can be according to state-of-charge, the engine behavior of electrokinetic cell, the operating state that the information such as temperature of the state-of-charge of the load condition of low-voltage electric system, the little storage battery of low pressure, DC-DC transducer self are come intelligent selection DC-DC transducer.Mainly finish from the high voltage power electric system and give the power supply of low pressure vehicle-mounted electrical system, give the little charge in batteries of low pressure, adjust low-voltage electric system to a specific magnitude of voltage, functions such as the switch control of DC-DC converting system.This DC-DC transducer makes full use of the mixed resource of power car own and realizes its function, on mechanical structure, with the shared water-cooling system of hybrid power entire car controller; On control realizes, finish the control and the diagnostic function of DC-DC transducer jointly by entire car controller and DC-DC transducer.
Mainly be by DC-DC enable between DC-DC transducer and the hybrid power entire car controller, DC-DC set, DC-DC OK, DC-DC load, carry out communication between DC-DC ref equisignal line and the hybrid power entire car controller, wherein, DC-DC enable is the control signal that enables of DC-DC transducer, and entire car controller can be controlled the startup of DC-DC transducer and stops by this signal; DC-DC set is output voltage and the output current that is used for being provided with the DC-DC transducer; DC-DC OK is the feedback signal of DC-DC transducer operating state; DC-DC load and DC-DC ref are the service loads that is used for feeding back the DC-DC transducer; The signal that the control of other DC-DC transducers needs can shared entire car controller transducer, such as the voltage sensor of vehicle-mounted low-voltage electric system, the environment temperature sensor of vehicle operation etc.
The present invention has also adopted the control method as shown in Figure 2, after the DC-DC control system powers on, to at first detect ignition switch whether in the position of ON, whether connect by the main relay of CAN network measuring high voltage power battery again, detect the voltage of A-battery and judge whether A-battery needs charging, charging if desired, the DC-DC control system will be obtained SOC (state-of-charge) information from the electrokinetic cell of BMS (power battery management system) by the CAN network, obtain the initial voltage output valve of the low-voltage output under this ambient temperature by tabling look-up; At this moment,, possesses preliminary condition, if SOC＜50% is then directly closed the DC-DC converting system, with the protection electrokinetic cell system to the power supply of voltage electrical system if the SOC of electrokinetic cell＞50% shows that power battery charged state is better.Under the condition of 50%＜SOC＜70%, if engine turns round, DC-DC converting system error-free information returns simultaneously, will enable DC-DC enable signal, allows DC-DC to open to low-voltage electric system and powers; In addition, if the state-of-charge of electrokinetic cell is fine: SOC＞70% o'clock, even engine is in halted state, if when DC-DC converting system error-free information returns, equally also will enable DC-DC enable signal, and allow DC-DC to open and power to low-voltage electric system.Design DC-DC converting system control method purpose (as Fig. 2) and prevent that the overdischarge phenomenon from appearring in electrokinetic cell in to stall, cause the damage of electrokinetic cell, because in engine running, big motor can in time give power battery charging to keep state-of-charge preferably.But when the state-of-charge of electrokinetic cell is good,, be to allow the work of DC-DC converting system to the low-voltage electric system charging in order to guarantee in time even to stall the time.This is that charge-discharge characteristic according to electrokinetic cell decides: the charge-discharge characteristic of the SOC of electrokinetic cell between 50%～70% is best, can finish the charging of battery at short notice; But, can cause electrokinetic cell to damage electrokinetic cell because of overcharging electric capacity when electrokinetic cell during at SOC＞80%; When electrokinetic cell during, can cause electrokinetic cell to damage electrokinetic cell because of overdischarge at SOC＜40%.So BMS (power battery management system) will control electrokinetic cell not in the regional work of SOC＞80% or SOC＜40%.The DC-DC transducer will be selected its live load according to the SOC of vehicle-mounted low-voltage electric system need for electricity and high voltage power battery.The DC-DC transducer also will dynamically be adjusted its maximum live load (as Fig. 3) that allows according to the state-of-charge of electrokinetic cell.This control method powers to low-voltage electric system can taking all factors into consideration electrokinetic cell characteristic and low-voltage electric system need for electricity.
As shown in Figure 3, according to the charge-discharge characteristic of electrokinetic cell, the maximum safe working load of DC-DC transducer is divided into 5 zones, among the figure in the maximum safe working load zone of the corresponding different DC-DC converting system in different zones.
Claims (1)
1. the DC-DC switching control method of hybrid vehicle, comprise high voltage power power-supply system and low pressure vehicle-mounted electrical system, be associated with the DC-DC transducer between high voltage power power-supply system and the low pressure vehicle-mounted electrical system, the DC-DC transducer is connected with mixed power entire car controller by one group of holding wire, corresponding transducer in the various signal common entire car controllers that the DC-DC transducer needs, finish the control and the diagnosis of DC-DC transducer by entire car controller, it is characterized in that having adopted the following step:
Detection also judges whether the A-battery in the low pressure vehicle-mounted electrical system needs charging;
If do not need charging, then close the DC-DC transducer;
Charging is if desired then obtained state-of-charge value SOC from the electrokinetic cell of power battery management system by the CAN net;
When SOC＜=50%, close the DC-DC transducer;
When 70%＞SOC＞50%, and engine running, allow to open the DC-DC transducer;
When 80%＞SOC＞=70%, allow out the DC-DC transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101662673A CN1996705B (en) | 2006-12-21 | 2006-12-21 | DC-DC conversion control system and control method of the mixed driven car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101662673A CN1996705B (en) | 2006-12-21 | 2006-12-21 | DC-DC conversion control system and control method of the mixed driven car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1996705A CN1996705A (en) | 2007-07-11 |
| CN1996705B true CN1996705B (en) | 2011-06-08 |
Family
ID=38251680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101662673A Expired - Fee Related CN1996705B (en) | 2006-12-21 | 2006-12-21 | DC-DC conversion control system and control method of the mixed driven car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1996705B (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141014B (en) * | 2007-09-03 | 2012-03-28 | 奇瑞汽车股份有限公司 | Direct current converting device control method of mixed power vehicle |
| CN101207331B (en) * | 2007-11-07 | 2010-11-17 | 奇瑞汽车股份有限公司 | Control method of commingle dynamic force automobile DC-DC |
| CN101282087B (en) * | 2008-04-25 | 2011-06-08 | 奇瑞汽车股份有限公司 | Method for converting DC/DC of double-voltage for vehicle |
| CN102104326A (en) * | 2009-12-16 | 2011-06-22 | 台达电子工业股份有限公司 | Vehicle-used DC-to-DC conversion device with communication function |
| CN101931253A (en) * | 2010-08-31 | 2010-12-29 | 重庆长安汽车股份有限公司 | CAN bus-based pure electric vehicle charging method and system |
| CN102545585B (en) * | 2010-12-23 | 2014-12-17 | 上海汽车集团股份有限公司 | Method for controlling voltage set point of direct-current high-voltage/low-voltage converter |
| US8534400B2 (en) * | 2011-02-14 | 2013-09-17 | Ford Global Technologies, Llc | Electric vehicle and method of control for active auxiliary battery depletion |
| CN102862471B (en) * | 2011-07-04 | 2015-06-10 | 上海华普汽车有限公司 | Charging device and charging method of hybrid car |
| CN102381209B (en) * | 2011-10-13 | 2014-04-02 | 奇瑞汽车股份有限公司 | Fault managing method for low-voltage storage battery of pure electric automobile |
| CN104767230B (en) * | 2014-01-08 | 2019-07-26 | 博世（中国）投资有限公司 | Control the method and system of the electric power of low-tension supply |
| 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 |
| CN104578270A (en) * | 2014-12-24 | 2015-04-29 | 山东新大洋电动车有限公司 | Vehicle-mounted low-voltage power supply device for battery electric vehicle |
| CN106374549B (en) * | 2015-07-23 | 2019-05-17 | 比亚迪股份有限公司 | The charging system of automobile batteries and the charging method of automobile batteries and automobile |
| 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 |
| CN106611886B (en) * | 2015-10-26 | 2020-06-19 | 比亚迪股份有限公司 | Discharging method and system of hybrid electric vehicle |
| CN105539172A (en) * | 2015-12-15 | 2016-05-04 | 苏州贝多环保技术有限公司 | Charging and discharging control method for battery of hybrid electric automobile |
| CN105667330A (en) * | 2016-01-11 | 2016-06-15 | 潍柴动力股份有限公司 | Control method and system for DCDC (direct current direct current) |
| JP6458756B2 (en) * | 2016-03-22 | 2019-01-30 | トヨタ自動車株式会社 | Automobile |
| CN106004446B (en) * | 2016-05-31 | 2018-07-10 | 北京现代汽车有限公司 | Charge control method, system and the entire car controller of electric vehicle low tension battery |
| CN108263214B (en) * | 2016-12-30 | 2020-03-24 | 北京汽车集团有限公司 | Energy control method and device for low-voltage storage battery of hybrid electric vehicle |
| CN107394888A (en) * | 2017-08-26 | 2017-11-24 | 上海魁殊自动化科技有限公司 | A kind of power supply circuit for carried on vehicle electrical system |
| CN109130858B (en) * | 2018-09-25 | 2020-07-28 | 北京新能源汽车股份有限公司 | Direct current/direct current converter starting control circuit of electric automobile and automobile |
| CN110182154A (en) * | 2019-05-13 | 2019-08-30 | 奇瑞新能源汽车技术有限公司 | A kind of vehicle-mounted mobile monitoring device and its mend method for electrically |
| CN110254293A (en) * | 2019-07-04 | 2019-09-20 | 江西昌河汽车有限责任公司 | A kind of electric car low voltage control battery self-inspection cycle control system |
| CN110978991B (en) * | 2019-12-18 | 2021-10-08 | 东风商用车有限公司 | Hybrid power commercial vehicle electrical system for power generation by solar energy and waste gas waste heat |
| CN112583068B (en) * | 2020-11-04 | 2023-09-22 | 长城汽车股份有限公司 | Control method and system of direct current/direct current (DC/DC) converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1346759A (en) * | 2001-10-25 | 2002-05-01 | 财团法人工业技术研究院 | Electric power output control system for electric vehicle with combined fuel battery |
| US6656618B2 (en) * | 1998-06-25 | 2003-12-02 | Toyota Jidosha Kabushiki Kaisha | Fuel cells system and method of controlling cells |
| CN1215947C (en) * | 2002-12-09 | 2005-08-24 | 北京交通大学 | Multiple power assembly controller for parallel mixing power electric car |
| CN1663838A (en) * | 2004-12-24 | 2005-09-07 | 清华大学 | Hybrid power system for automobile driven by fuel cell |
-
2006
- 2006-12-21 CN CN2006101662673A patent/CN1996705B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6656618B2 (en) * | 1998-06-25 | 2003-12-02 | Toyota Jidosha Kabushiki Kaisha | Fuel cells system and method of controlling cells |
| CN1346759A (en) * | 2001-10-25 | 2002-05-01 | 财团法人工业技术研究院 | Electric power output control system for electric vehicle with combined fuel battery |
| CN1215947C (en) * | 2002-12-09 | 2005-08-24 | 北京交通大学 | Multiple power assembly controller for parallel mixing power electric car |
| CN1663838A (en) * | 2004-12-24 | 2005-09-07 | 清华大学 | Hybrid power system for automobile driven by fuel cell |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-45883A 2005.02.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1996705A (en) | 2007-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1996705B (en) | DC-DC conversion control system and control method of the mixed driven car | |
| 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 | |
| US9004207B2 (en) | Control apparatus and control method for hybrid vehicle | |
| US7832513B2 (en) | Vehicular electrical system and control method therefor | |
| AU2015100339A4 (en) | A compound power system for an electrical vehicle | |
| US20140001843A1 (en) | Mild hybrid system and method for controlling the same | |
| US20130127418A1 (en) | Electric vehicle and charging control method for battery thereof | |
| US20090229898A1 (en) | Controller for Electric Storage Device and Vehicle with Controller for Electric Storage Device | |
| KR101500080B1 (en) | Method for controlling LDC in regenerative braking of eco-friendly vehicle | |
| KR20190105786A (en) | Vehicle power supply system and method for controlling the same | |
| CN207972603U (en) | A kind of double electric network compositions of the light-duty hybrid power system based on BSG | |
| CN110356233B (en) | Power supply control mode of pure electric vehicle | |
| CN110641284A (en) | Low-voltage power supply management system for safety monitoring of power battery of electric automobile | |
| KR20180070110A (en) | Apparatus and Method for controlling power generation in a vehicle | |
| CN111546938B (en) | Vehicle hybrid storage battery management system and method | |
| CN113335140A (en) | Control method, hybrid system, vehicle, and readable storage medium | |
| CN110293845B (en) | Power failure starting and stopping pond system, power failure starting and stopping pond control method and traffic carrier | |
| CN101439679B (en) | Lead acid battery function test method and apparatus for hybrid power automobile | |
| Maskey et al. | An intelligent battery management system for electric and hybrid electric vehicles | |
| US9083193B2 (en) | Vehicular electric power supply device and electric power supply system | |
| CN113752885B (en) | Electric automobile that can support direct current charging national standard treasured that charges | |
| KR20140084820A (en) | Apparatus for charging electric vehicle and method for operating thereof | |
| KR102286833B1 (en) | PHEV charging system and its control method | |
| CN211000942U (en) | Low-voltage power supply management system for safety monitoring of power battery of electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20201221 |