CN111532149A - Extended range electric vehicle power supply system and configuration method thereof - Google Patents

Extended range electric vehicle power supply system and configuration method thereof Download PDF

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Publication number
CN111532149A
CN111532149A CN202010530806.7A CN202010530806A CN111532149A CN 111532149 A CN111532149 A CN 111532149A CN 202010530806 A CN202010530806 A CN 202010530806A CN 111532149 A CN111532149 A CN 111532149A
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China
Prior art keywords
power
driving motor
power battery
range
vehicle
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Pending
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CN202010530806.7A
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Chinese (zh)
Inventor
王世强
宁予
潘世林
李世明
阎全忠
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Hanteng New Energy Automobile Technology Co ltd
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Hanteng New Energy Automobile Technology Co ltd
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Priority to CN202010530806.7A priority Critical patent/CN111532149A/en
Publication of CN111532149A publication Critical patent/CN111532149A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B60L50/62Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00Electrodynamic brake systems for vehicles in general
    • B60L7/10Dynamic electric regenerative braking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00Converter types
    • B60L2210/10DC to DC converters
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a range extending type power supply system of an electric vehicle, which comprises a range extender, a high-power energy type power battery, a high-rate type power battery, a vehicle control unit, a power distribution unit, a driving motor controller, a driving motor and an energy recovery system, wherein the range extender can charge the high-power energy type power battery through a vehicle-mounted charger, the driving motor controller can get electricity from the power distribution unit to the driving motor or charge the electricity generated by the driving motor to the high-rate type power battery through the energy recovery system under the torque or power instruction of the vehicle control unit, and the range extender, the high-power energy type power battery and the high-rate type power battery are all connected with the power distribution unit through high-voltage cables. The invention also provides a configuration method of the extended range electric vehicle power supply system. The invention can determine the on-off of the high-power energy type power battery, the high-rate power battery, the range extender and the driving motor controller under the torque or power instruction of the whole vehicle controller.

Description

Extended range electric vehicle power supply system and configuration method thereof
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a range-extending type electric automobile power supply system and a configuration method thereof.
Background
At present, new energy automobiles mainly include pure electric automobiles, hybrid electric automobiles and hydrogen fuel cell automobiles, wherein the pure electric automobiles are new energy automobiles which are developed relatively maturely. However, the range limit and the charging convenience limit of the pure electric vehicle are great problems faced by such products.
An extended range electric automobile is additionally provided with a vehicle-mounted power generation system on the basis of a pure electric automobile. However, the extended range electric vehicle has two power sources, and thus has the problem of energy distribution and power distribution of the two power sources. The existing range-extending electric automobile is at least provided with drive modes of range extender independent drive, power battery independent drive, range extender fixed power battery regulation power drive, battery fixed power range extender regulation power drive, range extender drive and battery charging and the like.
The specification of the chinese invention patent CN201910503702.4 discloses a free piston expander-linear generator and compound power source range-extended electric vehicle, the working principle of the range-extended electric vehicle is as follows: when the output power of the linear generator is greater than the power required by the driving motor and the SOC of the power battery is lower than 50%, the linear generator is independently driven, the super capacitor is charged at the same time, and then the super capacitor charges the power battery through the double DC/DC converters; when the output power of the linear generator is greater than the power required by the driving motor and the SOC of the power battery is greater than 75%, the linear generator is driven by the linear engine alone; when the SOC of the power battery is more than 75% and the required power of the driving motor is less than the output power of the power battery and the super capacitor, the driving is carried out by the power battery and the super capacitor; when the required power of the driving motor is greater than the output power of the power battery and the super capacitor, the driving motor is driven by the linear generator, the power battery and the super capacitor together; when the automobile is in a braking or decelerating state, the driving motor is in a power generation mode, braking energy is recovered through the braking energy manager and the super capacitor, and then the power battery is charged through the double DC/DC converter.
The specification of the chinese invention patent CN201810313037.8 discloses an energy storage management system based on a range extender vehicle, which includes a range extender unit group, an energy storage unit and a distributed energy management unit, wherein the range extender unit group includes a plurality of range extender units for converting the energy of an internal combustion engine into electric energy; the energy storage unit is used for supplying power to the vehicle load and recovering the vehicle braking energy and comprises a super-capacitor energy storage unit and a power battery energy storage unit, the super-capacitor energy storage unit is configured into an auxiliary energy storage component, and the power battery energy storage unit is configured into a main energy storage component; the distributed energy management unit is arranged to coordinately control the range extender unit group and the energy storage unit to provide a power source for the vehicle according to the load demand power of the vehicle and the state of charge of the energy storage unit.
However, the power of the range extender adopted in the prior art is equivalent to that of the driving motor, so that the range extender is high in manufacturing cost and heavy in weight; the electric energy storage device generally adopts a common energy type power battery which is not only limited by SOC but also can not recover energy with high power.
Disclosure of Invention
In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a power supply system for an extended range electric vehicle and a configuration method thereof.
In order to solve the technical problems, the invention provides a range-extended electric vehicle power supply system which comprises a range extender, a high-power energy type power battery, a high-rate power battery, a vehicle control unit, a power distribution unit, a driving motor controller, a driving motor and an energy recovery system, wherein the range extender can charge the high-power energy type power battery through a vehicle-mounted charger, the driving motor controller can get electricity from the power distribution unit to the driving motor or charge electricity generated by the driving motor to the high-rate power battery through the energy recovery system under the torque or power instruction of the vehicle control unit, and the range extender, the high-power energy type power battery and the high-rate power battery can be connected with the power distribution unit through high-voltage cables.
Preferably, the maximum output power of the range extender can meet the requirement that the range-extended electric automobile is used for more than 10 hours every day and the running distance reaches 800 kilometers.
Preferably, the high-power energy type power battery can achieve the charging and discharging rate of 1C at 25 ℃ and the SOC within the range of 10% -90%.
Preferably, the charging power of the high-power energy type power battery with the SOC within the interval of 20% -80% is larger than the maximum power of the driving motor for charging the high-rate power battery through the energy recovery system.
Preferably, the maximum capacity of the high-rate power battery is the energy generated by rapid braking of the extended range electric automobile when the automobile speed is 60 km/h.
The invention also provides a configuration method of the extended range electric vehicle power system, which comprises the following steps:
when braking, the vehicle control unit controls the driving motor to be in a generator state through the driving motor controller, and meanwhile, the energy recovery system connected with the driving motor controller charges the high-rate power battery;
when the vehicle is started, climbed and accelerated and suddenly accelerated, the vehicle controller enables the high-rate power battery, the high-power energy power battery and the range extender to output power to the driving motor through the power distribution unit and the driving motor controller;
when the vehicle runs stably at medium and high speeds, the vehicle controller enables the range extender and the high-power energy type power battery to output power to the driving motor through the power distribution unit and the driving motor controller, wherein: the range extender provides constant power for the driving motor, and the high-power energy type power battery is adjusted according to the power required by the driving motor;
when driving at low speed, the vehicle control unit controls the range extender to work at a low-speed constant power point, wherein: the output power of the range extender is equal to the charging power of the high-power energy type power battery and the power required by the driving motor, or the output power of the high-power energy type power battery and the output power of the range extender is equal to the power required by the driving motor;
and when the vehicle is in a parking state, the vehicle control unit determines the starting and stopping state of the range extender and the power generation point in the starting state according to the long-distance mode and the daily mode.
Compared with the prior art, the invention has the beneficial effects that:
1. the power distribution unit is connected with the drive motor controller and controlled by the vehicle control unit, so that the on-off of the high-power energy type power battery, the high-rate power battery, the range extender and the drive motor controller can be determined under the torque or power instruction of the vehicle control unit.
2. The driving motor controller can be arranged under the torque or power instruction of the vehicle control unit, power is obtained from the power distribution unit and is changed into alternating current to be supplied to the driving motor for use, or the alternating current induced by the driving motor is converted into direct current high-voltage power through the DC/DC converter and is transmitted to the energy recovery system, and the energy recovery system charges the high-rate power battery, so that the braking energy can be completely recovered to increase the endurance mileage and reduce the energy consumption of hundreds of kilometers.
3. By arranging the high-power energy type power battery and the high-rate power battery, the SOC interval of the power battery meeting the power requirement can be enlarged.
Drawings
Fig. 1 is a schematic structural diagram of a power supply system of an extended range electric vehicle according to the present invention.
Illustration of the drawings: the system comprises a range extender 1, a high-power energy type power battery 2, a high-rate power battery 3, a vehicle-mounted charger 4, a power distribution unit 5, a driving motor controller 6, a driving motor 7 and a direct-current voltage conversion charger 8.
Detailed Description
The invention will be further described with reference to the drawings and preferred embodiments.
For better understanding of the present invention, the embodiment provides a range-extended electric vehicle power system (as shown in fig. 1), which includes a range extender 1, a high power energy type power battery 2, a high rate type power battery 3, a vehicle controller (not shown), a vehicle-mounted charger 4, a power distribution unit 5, a driving motor controller 6, a driving motor 7, and a dc voltage conversion charger 8. The range extender 1 can charge the high-power energy type power battery 2 through the vehicle-mounted charger 4, and the driving motor controller 6 can get electricity from the power distribution unit 5 to the driving motor 7 under the torque or power instruction of the vehicle controller or charge the high-power type power battery 3 through the direct-current voltage conversion charger 8 by using the electricity generated by the driving motor 7. Specifically, the power distribution unit 5 may be connected to the range extender 1, the high power energy type power battery 2, the high rate type power battery 3, and the driving motor controller 6 through a high voltage cable, and both the power distribution unit 5 and the driving motor controller 6 may communicate with and be controlled by the vehicle control unit, so that the on/off of the range extender 1, the high power energy type power battery 2, and the high rate type power battery 3 in the driving motor controller 6 may be determined according to a torque or a power instruction of the vehicle control unit.
Furthermore, the range extender 1 may adopt a combination of an existing engine and a generator, and in order to enable the range extender 1 to charge the high-power energy type power battery 3 through the vehicle-mounted charger 4, the maximum output power of the range extender 1 needs to meet the requirement that the range-extended electric vehicle is used for more than 10 hours every day and the travel distance reaches 800 kilometers.
Furthermore, the high-power energy type power battery 2 integrates the advantages of a power type power battery and an energy type power battery, and can achieve the charging and discharging rate of 1C at 25 ℃ and the SOC within the range of 10-90%. Preferably, the charging power of the high-power energy type power battery 2 with the SOC within the interval of 20% -80% is larger than the maximum power of the driving motor 7 for charging the high-rate type power battery 3 through the direct-current voltage conversion charger 8. Furthermore, the high power energy type power battery 2 can also be connected with an external plug-in charging port through a high voltage cable, so that the high power energy type power battery 2 can be charged through an external plug-in charging device when the SOC is lower than 10% and the charging cannot be carried out through the range extender 1.
Furthermore, in order to fully recover the braking energy to increase the endurance mileage and reduce the energy consumption of hundreds of kilometers, the high-rate power battery 3 is configured to recover the energy generated by the rapid braking of the extended range electric vehicle at the vehicle speed of 60km/h, i.e. the rapid braking of the extended range electric vehicle at the vehicle speed of 60km/h, the vehicle controller controls the driving motor 7 to be in a generator state through the driving motor controller 6, and converts the recovered alternating current into direct current through the direct current voltage conversion charger 8 to charge the high-rate power battery 3.
The embodiment also provides a configuration method of the extended-range electric vehicle power system in the long-distance self-driving tour mode, wherein the configuration method comprises the following steps: the rated power of the driving motor is 10kW, and the maximum power is 40 kW; the high-power energy type power capacity is 30 kWh; the capacity of the high-rate power battery is 0.3 kWh; the range extender power is 6 kW.
The configuration method of the power supply system comprises the following specific steps:
when braking, the vehicle control unit controls the driving motor to be in a generator state through the driving motor controller, and meanwhile, the energy recovery system connected with the driving motor controller charges the high-rate power battery;
when starting, climbing acceleration and rapid acceleration, vehicle control unit makes high multiplying power type power battery, high power energy type power battery and increase journey ware output power for driving motor through power distribution unit and driving motor controller, wherein: the high-power energy type power battery preferentially outputs power to the driving motor so as to charge and store energy again when the brake is applied, and the output power of the range extender is 6 kW.
When the vehicle runs stably at medium and high speeds, the vehicle controller enables the range extender and the high-power energy type power battery to output power to the driving motor through the power distribution unit and the driving motor controller, wherein: the output power of the range extender is 6kW, and the high-power energy type power battery is adjusted according to the power required by the driving motor;
when the vehicle runs at a low speed, the vehicle control unit controls the range extender to work at a constant power point of 6kW, and the output power of the range extender is equal to the charging power of the high-power energy type power battery plus the power required by the driving motor;
and when the vehicle is stopped, the vehicle control unit determines the starting power generation power point of the range extender to be 6kW according to the long-distance mode.
The foregoing merely represents preferred embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (6)

1. An increase form electric automobile power supply system which characterized in that: the range extender, the high-power energy type power battery and the high-rate power battery are connected with the power distribution unit through high-voltage cables.
2. The extended range electric vehicle power supply system of claim 1, wherein: the maximum output power of the range extender can meet the requirement that the range-extended electric automobile is used for more than 10 hours every day and the running distance reaches 800 kilometers.
3. The extended range electric vehicle power supply system of claim 1, wherein: the high-power energy type power battery can achieve a charging and discharging rate of 1C at 25 ℃ and an SOC (state of charge) within a range of 10% -90%.
4. The extended range electric vehicle power supply system of claim 3, wherein: the charging power of the high-power energy type power battery with the SOC within the range of 20% -80% is larger than the maximum power of the driving motor for charging the high-rate power battery through the energy recovery system.
5. The extended range electric vehicle power supply system of claim 1, wherein: the maximum capacity of the high-rate power battery is the energy generated by rapid braking of the range-extended electric automobile when the speed is 60 km/h.
6. The method for configuring the extended range electric vehicle power system of claim 1, comprising:
when braking, the vehicle control unit controls the driving motor to be in a generator state through the driving motor controller, and meanwhile, the energy recovery system connected with the driving motor controller charges the high-rate power battery;
when the vehicle is started, climbed and accelerated and suddenly accelerated, the vehicle controller enables the high-rate power battery, the high-power energy power battery and the range extender to output power to the driving motor through the power distribution unit and the driving motor controller;
when the vehicle runs stably at medium and high speeds, the vehicle controller enables the range extender and the high-power energy type power battery to output power to the driving motor through the power distribution unit and the driving motor controller, wherein: the range extender provides constant power for the driving motor, and the high-power energy type power battery is adjusted according to the power required by the driving motor;
when driving at low speed, the vehicle control unit controls the range extender to work at a low-speed constant power point, wherein: the output power of the range extender is equal to the charging power of the high-power energy type power battery and the power required by the driving motor, or the output power of the high-power energy type power battery and the output power of the range extender is equal to the power required by the driving motor;
and when the vehicle is in a parking state, the vehicle control unit determines the starting and stopping state of the range extender and the power generation point in the starting state according to the long-distance mode and the daily mode.
CN202010530806.7A 2020-06-11 2020-06-11 Extended range electric vehicle power supply system and configuration method thereof Pending CN111532149A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113619557A (en) * 2021-08-31 2021-11-09 徐工集团工程机械股份有限公司道路机械分公司 Energy management system and control method for electrically driven paver

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Publication number Priority date Publication date Assignee Title
WO2014091238A2 (en) * 2012-12-12 2014-06-19 Teva Motors Limited Range extender control
CN107813708A (en) * 2017-11-02 2018-03-20 北京理工大学 A kind of range extended electric vehicle power system and its control method
CN108638874A (en) * 2018-04-09 2018-10-12 浙江吉利控股集团有限公司 A kind of energy storage management system based on extended-range vehicle
CN109760524A (en) * 2019-01-28 2019-05-17 徐工集团工程机械有限公司 A kind of hybrid vehicle and its control method
CN111251873A (en) * 2020-02-19 2020-06-09 海通科创(深圳)有限公司 Hybrid power system, moving tool and control method
CN212529331U (en) * 2020-06-11 2021-02-12 汉腾新能源汽车科技有限公司 Range-extending type electric automobile power supply system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091238A2 (en) * 2012-12-12 2014-06-19 Teva Motors Limited Range extender control
CN107813708A (en) * 2017-11-02 2018-03-20 北京理工大学 A kind of range extended electric vehicle power system and its control method
CN108638874A (en) * 2018-04-09 2018-10-12 浙江吉利控股集团有限公司 A kind of energy storage management system based on extended-range vehicle
CN109760524A (en) * 2019-01-28 2019-05-17 徐工集团工程机械有限公司 A kind of hybrid vehicle and its control method
CN111251873A (en) * 2020-02-19 2020-06-09 海通科创(深圳)有限公司 Hybrid power system, moving tool and control method
CN212529331U (en) * 2020-06-11 2021-02-12 汉腾新能源汽车科技有限公司 Range-extending type electric automobile power supply system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113619557A (en) * 2021-08-31 2021-11-09 徐工集团工程机械股份有限公司道路机械分公司 Energy management system and control method for electrically driven paver

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Application publication date: 20200814