CN108146254B - Control method and device of range extender - Google Patents

Control method and device of range extender Download PDF

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Publication number
CN108146254B
CN108146254B CN201711452859.6A CN201711452859A CN108146254B CN 108146254 B CN108146254 B CN 108146254B CN 201711452859 A CN201711452859 A CN 201711452859A CN 108146254 B CN108146254 B CN 108146254B
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electric quantity
range extender
power battery
current
quantity threshold
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CN108146254A (en
Inventor
章友京
梁长飞
薛斌
肖小城
沙文瀚
刘琳
孔令静
王春丽
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Chery New Energy Automobile Co Ltd
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Chery New Energy Automobile Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric 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
    • 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
    • Y02T10/62—Hybrid vehicles
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

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

Abstract

The disclosure relates to a control method and a control device of a range extender, which are applied to a range-extended electric automobile and belong to the field of control of hybrid electric automobiles. The working requirement of the range extender is to meet the dynamic property, economical efficiency, comfort, safety and subjective requirements of a driver of the whole vehicle. In the disclosure, the working modes of the automobile are divided into a forced starting mode, a forced stopping mode, an electric mode and an automatic mode, a driver can realize subjective requirements by changing the working modes, and the emphasis points for controlling the range extender are different in different working modes. When the vehicle control unit controls the range extender, the range extender works according to the battery power, such as a low-power dangerous area, a low-power alarm area, a power protection area and a charging permission area, according to the vehicle speed, such as a high-speed permission working area and a low-speed prohibition working area, and according to various signals, such as the battery power, the vehicle speed, faults and the like. By adopting the method and the device, the range-extended electric automobile is convenient to control in aspects of dynamic property, economy and subjective requirements of a driver.

Description

Control method and device of range extender
Technical Field
The disclosure relates to the technical field of automobiles, in particular to a control method and a control device of a range extender.
Background
Along with the continuous development of the automobile industry, electric automobiles are also more and more popular to people, but pure electric automobiles have the problems of long charging time, short driving mileage after one-time charging and the like, so that the extended-range electric automobiles have the advantage of improving the driving mileage and become the development trend of the electric automobiles.
The range-extended electric automobile is also provided with the range extender in the pure electric automobile, so that a power system of the range-extended electric automobile mainly comprises the motor, the power battery and the range extender, wherein the range extender and the power battery can be used as energy sources of the motor, the range extender and the power battery can simultaneously drive the motor to work, and the range extender and the power battery can also independently drive the motor to work, so that the driving mileage can be increased.
In carrying out the present disclosure, the inventors found that at least the following problems exist:
the working modes of the conventional range-extended electric vehicle generally include a pure electric mode, a pure range-extended mode and a mixed mode, and after a user selects one working mode, the range-extended electric vehicle always works according to the working mode, so that the control difficulty of the range-extended electric vehicle in the aspects of dynamic performance, economical efficiency, subjective requirements of a driver and the like is high.
Disclosure of Invention
In order to overcome the problem that the control difficulty of the range-extended electric vehicle in aspects of dynamic performance, economy, subjective requirements of a driver and the like is high in the related art, the disclosure provides a control method and a control device of a range extender. The technical scheme is as follows:
according to an embodiment of the disclosure, a control method of a range extender is provided, and the method is applied to a range-extended electric vehicle, and the range-extended electric vehicle comprises a vehicle control unit, a range extender, a motor and a power battery, wherein the range extender comprises an engine and a generator which are electrically connected, the vehicle control unit is electrically connected with the range extender, the motor and the power battery respectively, and the generator of the range extender is electrically connected with the motor and the power battery respectively, and the method comprises the following steps:
the vehicle control unit detects a mode selection instruction;
when the vehicle control unit detects a forced starting mode, if the current electric quantity of the power battery is smaller than a first preset threshold value, controlling the range extender to work;
when the vehicle control unit detects a forced stop mode, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, controlling the range extender to stop working;
when the vehicle control unit detects an electric mode, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, or if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working; if the current electric quantity of the power battery is lower than a first electric quantity threshold and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than a third electric quantity threshold and smaller than a second electric quantity threshold and the current vehicle speed is greater than a preset speed, controlling the range extender to work, wherein the first electric quantity threshold is greater than the second electric quantity threshold, and the second electric quantity threshold is greater than the third electric quantity threshold;
when the vehicle control unit detects an automatic mode, if the current electric quantity of the power battery is lower than the third electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is greater than a preset speed, controlling the range extender to work; and if the current electric quantity of the power battery is larger than a first electric quantity threshold value, controlling the range extender to stop working.
Optionally, the method further includes:
and when the vehicle control unit detects a forced stop mode, if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working.
Optionally, the method further includes:
when the vehicle control unit detects a forced stop mode, if the current electric quantity of the power battery is larger than a third electric quantity threshold value and smaller than a second electric quantity threshold value, and the current vehicle speed is smaller than a preset speed, the range extender is controlled to stop working.
Optionally, if the current electric quantity of the power battery is lower than a third electric quantity threshold and the current vehicle speed is greater than zero, controlling the range extender to operate, including:
and if the current electric quantity of the power battery is lower than a third electric quantity threshold value and the current vehicle speed is greater than zero, controlling the range extender to work, and the generated power of the range extender is greater than the consumed power of the motor.
Optionally, if the current electric quantity of the power battery is greater than the third electric quantity threshold and less than the second electric quantity threshold and the current vehicle speed is greater than a preset speed, the range extender is controlled to operate, including:
if the current electric quantity of the power battery is larger than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is larger than a preset speed, controlling the range extender to work;
when the generated power of the range extender is smaller than the consumed power of the motor, the power battery and the range extender drive the motor to work together, and when the generated power of the range extender is larger than or equal to the consumed power of the motor, the range extender drives the motor to work alone.
According to the disclosed embodiment, a control device of a range extender is further provided, the device is applied to a range-extended electric vehicle, the range-extended electric vehicle comprises a vehicle control unit, a range extender, a motor and a power battery, wherein the range extender comprises an engine and a generator which are electrically connected, the vehicle control unit is respectively electrically connected with the range extender, the motor and the power battery, the generator of the range extender is respectively electrically connected with the motor and the power battery, and the device comprises:
the detection module is used for detecting a mode selection instruction;
a control module to:
when a forced starting mode is detected, if the current electric quantity of the power battery is smaller than a first preset threshold value, controlling the range extender to work;
when a forced stop mode is detected, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, controlling the range extender to stop working;
when the electric mode is detected, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, or if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working; if the current electric quantity of the power battery is lower than a first electric quantity threshold and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than a third electric quantity threshold and smaller than a second electric quantity threshold and the current vehicle speed is greater than a preset speed, controlling the range extender to work, wherein the first electric quantity threshold is greater than the second electric quantity threshold, and the second electric quantity threshold is greater than the third electric quantity threshold;
when the automatic mode is detected, if the current electric quantity of the power battery is lower than the third electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is greater than a preset speed, controlling the range extender to work; and if the current electric quantity of the power battery is larger than a first electric quantity threshold value, controlling the range extender to stop working.
Optionally, the control module is further configured to:
and when the forced stop mode is detected, if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working.
Optionally, the control module is further configured to:
and when the forced stop mode is detected, if the current electric quantity of the power battery is greater than a third electric quantity threshold value and less than a second electric quantity threshold value and the current vehicle speed is less than a preset speed, controlling the range extender to stop working.
Optionally, the control module is further configured to:
and if the current electric quantity of the power battery is lower than a third electric quantity threshold value and the current vehicle speed is greater than zero, controlling the range extender to work, and the generated power of the range extender is greater than the consumed power of the motor.
Optionally, the control module is further configured to:
if the current electric quantity of the power battery is larger than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is larger than a preset speed, controlling the range extender to work;
when the generated power of the range extender is smaller than the consumed power of the motor, the power battery and the range extender drive the motor to work together, and when the generated power of the range extender is larger than or equal to the consumed power of the motor, the range extender drives the motor to work alone.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, after the extended range electric vehicle is started, the vehicle controller detects a current state of the extended range electric vehicle, such as a situation that a current electric quantity of a power battery, a current charging power and the like are satisfied, and determines a working mode based on a working mode selected by a user. During the running process of the extended range electric automobile in the current working mode, the vehicle control unit detects the current electric quantity of the power battery and the like, and if the situation that the current working mode is not met is detected, the vehicle control unit automatically switches the current working mode to the working mode meeting the conditions. Therefore, the vehicle controller of the extended range electric vehicle controls the working mode based on the current state of the vehicle on the basis of the subjective requirement of the driver, and avoids the situation that the extended range electric vehicle always works according to the working mode selected by the user after the user selects one working mode. Therefore, the extended range electric automobile is convenient to control in aspects of dynamic property, economy and subjective requirements of drivers.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. In the drawings:
FIG. 1 is a schematic structural diagram of an extended range electric vehicle according to an embodiment;
FIG. 2 is a flow chart illustrating a method of controlling an extended range electric vehicle according to an embodiment;
fig. 3 is a schematic structural diagram of a control device of an extended range electric vehicle according to an embodiment.
Description of the figures
1. Vehicle control unit 2 and motor
3. Power battery 4 and range extender
41. Engine 42 and generator
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The embodiment of the disclosure provides a control method of a range extender, which is applied to a range-extended electric vehicle, namely a pure electric vehicle, and the range extender is installed in the pure electric vehicle. The power system of the extended-range electric vehicle is shown in fig. 1, and mainly comprises a vehicle control unit 1, a motor 2, a power battery 3 and a range extender 4, wherein the vehicle control unit 1 is electrically connected with the motor 2, the power battery 3 and the range extender 4 respectively, the range extender 4 is electrically connected with the motor 2 and the power battery 3 respectively, the motor 2 is used for driving the extended-range electric vehicle to run, and both the power battery 3 and the range extender 4 can be used as energy sources of the motor 2. The range extender 4 may further include an engine 41 and a generator 42 electrically connected to each other, the engine 41 is configured to drive the generator 42 to generate electricity, the generator 42 may be electrically connected to the motor 2 and the power battery 3 respectively and configured to output electric energy to the motor 2, and when the generated power of the generator 42 is greater than the consumed power of the motor 2, the generator 42 stores the surplus electric energy in the power battery 3, that is, the range extender 4 may charge the power battery 3.
The Vehicle controller is also called a VCU (Vehicle Control Unit), and is a Vehicle-dedicated microcomputer Vehicle controller, which is also called a "traveling computer" or a "Vehicle-mounted computer".
The method may be implemented by detecting a mode selection command by the vehicle control unit 1; when the vehicle control unit 1 detects a forced starting mode, if the current electric quantity of the power battery 3 is smaller than a first preset threshold value, controlling the range extender 4 to work; when the vehicle control unit 1 detects a forced stop mode, if the current electric quantity of the power battery 3 is greater than a second electric quantity threshold value, controlling the range extender 4 to stop working; when the vehicle control unit 1 detects the electric mode, if the current electric quantity of the power battery 3 is greater than a second electric quantity threshold value, or if the current electric quantity of the power battery 3 is less than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender 4 to stop working; if the current electric quantity of the power battery 3 is lower than a first electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery 3 is greater than a third electric quantity threshold value and less than a second electric quantity threshold value and the current vehicle speed is greater than a preset speed, controlling the range extender 4 to work, and when the vehicle control unit 1 detects an automatic mode, if the current electric quantity of the power battery 3 is lower than the third electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery 3 is greater than the third electric quantity threshold value and less than the second electric quantity threshold value and the current vehicle speed is greater than the preset speed, controlling the range extender 4; and if the current electric quantity of the power battery 3 is greater than the first electric quantity threshold value, controlling the range extender 4 to stop working.
The range extender 4 works, that is, the engine 41 in the range extender 4 can drive the generator 42 to generate electricity, the electric energy generated by the range extender 4 can be supplied to the motor 2 and the power battery 3, and usually, the range extender 4 cannot directly drive the automobile to run. The range extender 4 stops operating, that is, the engine 41 in the range extender 4 stops operating, and the generator 42 also stops generating electricity.
The first power threshold is greater than the second power threshold, which is greater than the third power threshold; for example, the first charge threshold may be 98%, the second charge threshold may be 30%, and the third charge threshold may be 10%. And each electric quantity threshold is provided with a buffer zone at the critical value, so that the range extender 4 is prevented from being started and stopped when the current electric quantity of the power battery 3 changes before and after the critical value, and the buffer zone arranged for each electric quantity threshold can protect the range extender 4.
The forced starting mode, the forced stopping mode, the electric mode and the automatic mode are four working modes of the range-extended electric automobile. In the forced start mode, the extended range electric vehicle preferentially operates when the range extender 4 is started, that is, the range extender 4 preferentially drives the electric motor 2 to operate, and the power battery 3 may drive the electric motor 2 to operate after the range extender 4 drives the electric motor 2 to operate. In the forced stop mode, the extended range electric vehicle preferentially operates with the range extender 4 turned off, that is, the power battery 3 alone drives the electric motor 2 to operate. The Electric mode is also referred to as an EV (Electric Vehicle) mode in which the power battery 3 preferentially drives the motor to operate, and the range extender 4 may drive the motor 2 in an auxiliary manner in addition to the driving of the motor 2 by the power battery 3, and belongs to the economy mode. In an automatic mode, also called AUTO mode, in this mode, the power battery 3 may drive the motor 2 alone, the range extender 4 may drive the motor 2 alone, and the power battery 3 and the range extender 4 may drive the motor 2 together, in this mode, the vehicle control unit controls the power source of the motor 2 based on the subjective demand of the driver, and the vehicle control unit 1 determines the subjective demand of the driver based on the force of the driver on the accelerator pedal, for example, the vehicle control unit 1 detects that the force of the driver on the accelerator pedal is large, and may control the range extender 4 and the power battery 3 to drive the motor 2 together, and for example, the vehicle control unit 1 detects that the force of the driver on the accelerator pedal is small, and may control the power battery 3 to drive the motor 2 alone.
In the implementation, the switching of the four operating modes of the extended range electric vehicle is performed based on subjective requirements of a user, for example, the user manually selects a certain mode, and then the actual situation is determined. Specifically, after the vehicle control unit detects a target mode selected by a user, it determines whether the current state of the extended range electric vehicle can work in the target mode, if the current state can work in the target mode, the vehicle control unit works in the target mode, when the vehicle control unit works in the target mode, the vehicle control unit periodically determines the current state of the extended range electric vehicle, and once the current state does not meet the condition of the target mode, the vehicle control unit controls to automatically switch to a proper working mode. The following describes the switching conditions of the four operation modes respectively:
a control panel of a cockpit of the extended range electric automobile is provided with four modes of selection keys, wherein the keys can be mechanical keys, touch keys and the like. In the electrical relationship, the button of each mode is electrically connected to the vehicle controller, and the vehicle controller periodically detects the button signal of each mode, for example, when the button of a certain mode is pressed, the vehicle controller detects a high level, that is, the mode is considered as the driver's selection mode, and usually, the duration of the press of the button by the driver is about 30 milliseconds, and the vehicle controller detects the high level lasting for 30 milliseconds. In this way, the driver can select a certain mode according to personal preferences.
When a driver selects the forced starting mode, after the vehicle controller 1 detects a key signal corresponding to the forced starting mode, firstly judging whether the vehicle has a fault, if the vehicle has no fault, executing subsequent work, and if the vehicle has the fault, sending a fault alarm to remind the driver. Then, the vehicle control unit 1 determines a relationship between the current chargeable power of the power battery 3 and the allowable charging power, wherein the allowable charging power is related to the current electric quantity of the power battery 3, and if the current electric quantity is greater than or equal to 98%, the current chargeable power of the power battery 3 is considered to be greater than or equal to the allowable charging power; if the current charge of the power battery 3 is less than 98%, the current chargeable power of the power battery 3 is less than the allowable charging power. Finally, if the current chargeable power of the power battery 3 is smaller than the allowable charging power, the current electric quantity of the power battery 3 is smaller than a first electric quantity threshold (which may be 98%), and the vehicle control unit detects that the range extender 4 can be normally started, the range extender 4 is controlled to be started. However, if the vehicle control unit 1 detects that other failures that cannot be started occur in the range extender 4, such as power battery leakage, vehicle temperature being too high, etc., the range extender 4 is stopped to start for driving safety.
In implementation, in order to obtain more accurate current charging power, the vehicle control unit 1 periodically calculates the current chargeable power of the power battery 3, and the calculation formula may be that the chargeable power is the generating power of the range extender 4 + the braking energy recovery power-the accessory operating power-the consumed power of the electric motor 2. The accessory operating power is equal to the sum of the operating powers of the air conditioner, the thermistor or the heat pump, the transformer, the fan and other accessories, and the power consumption of the motor 2 is equal to the product of the bus voltage and the bus current of the motor 2 when the motor 2 is driven.
Alternatively, in the forced start mode, the power source of the motor 2 may be from the range extender 4 only, or from the range extender 4 and the power battery 3. Specifically, when the generated power of the range extender 4 is equal to the current consumed power of the motor 2, the vehicle control unit 1 controls the range extender 4 to drive the motor 2 to work independently; when the generated power of the range extender 4 is greater than the current consumed power of the motor 2, a part of the electric energy generated by the generator 42 in the range extender 4 is used for driving the electric automobile, and the rest electric energy is stored in the power battery 3; when the generated power of the range extender 4 is smaller than the current consumed power of the motor, the range extender 4 and the power battery 3 are controlled to jointly drive the motor 2 to work.
In the implementation, the current power consumption of the electric motor, that is, the required power of the extended range electric vehicle, is mainly determined by the force of the driver stepping on the accelerator pedal, for example, when the driver steps on the accelerator pedal to the bottom, the required power of the extended range electric vehicle is increased at this time, the generated power of the extended range device 4 cannot meet the required power, the vehicle control unit first detects the current electric quantity of the power battery 3, and if the current electric quantity of the power battery 3 is greater than the first electric quantity threshold, controls the power battery 3 to also transmit electric energy to the electric motor 2, so that the extended range device 4 and the power battery 3 drive the electric motor to work together.
As shown in table 1, the power interval of the power battery may be divided into a low-power dangerous area, a low-power alarm area, a power protection area, and a charging-allowed area.
TABLE 1 electric quantity interval of power battery
Interval of electric quantity Electric quantity
Low battery hazardous area 0-10％
Low battery alarm area 10％-30％
Dynamic protection zone 30％-100％
Charging permission area 0-98％
When the current electric quantity of the power battery 3 is in the power protection zone, the extended range electric vehicle can run at a high speed, and the phase can be called as a high-speed allowable working zone; when the current electric quantity of the power battery 3 is in a low-electric-quantity dangerous area, for the power battery 3, the extended-range electric vehicle is in a low-speed forbidden area, and the vehicle control unit 1 needs to start a forced start mode to control the operation of the extended-range device 4.
Based on the above, in the forced starting mode, the range-extended electric vehicle can be driven in the pure range-extended mode, and can also be driven in the mixed mode of the power battery 3 and the range extender 4, so that the range is long, and the dynamic property is better. In the mode, when the vehicle control unit 1 detects that the current electric quantity of the power battery 3 is greater than the first electric quantity threshold value, the vehicle control unit 1 controls the forced start mode to automatically switch to the forced stop mode, so as to protect the power battery 3.
And (II) a forced stop mode, wherein when the driver selects the forced stop mode, after the vehicle control unit 1 detects a key signal corresponding to the mode, in order to protect the power battery 3, the vehicle control unit 1 firstly judges the current electric quantity of the power battery 3, and if the current electric quantity is greater than a third electric quantity threshold value, namely, the current electric quantity is not in a low-electric-quantity dangerous area, the range extender 4 is controlled to stop driving the motor 2 to work, and at the moment, the power battery 3 independently drives the motor 2 to work. The conditions for entering this mode may be:
in the first mode, the current electric quantity of the power battery 3 is smaller than the third electric quantity threshold, but the current vehicle speed is zero, and the vehicle control unit 1 may stop starting the range extender 4 when detecting the forced stop mode; in the second mode, the current electric quantity of the power battery 3 is greater than the third electric quantity threshold and less than the second electric quantity threshold, and the current vehicle speed is less than the preset speed, when the vehicle control unit 1 detects the forced stop mode, the range extender 4 can be stopped to start; in a third mode, when the current electric quantity of the power battery 3 is greater than the first electric quantity threshold, the vehicle control unit 1 may stop starting the range extender 4 when detecting the forced stop mode.
In practice, this mode can be selected when the driver sees that the power of the power battery 3 in the control panel is sufficient. When the vehicle control unit 1 detects a key signal corresponding to the mode and judges that the current electric quantity of the power battery 3 meets the condition, the range extender 4 is controlled to stop driving the motor 2, and the power battery 3 is controlled to drive the motor 2 to work independently. The mode can also be called a pure electric mode, and in the mode, the oil-saving and environment-friendly performance is good, and the NVH (Noise, Vibration and Harshness) performance is good.
In implementation, in the case that the range extender 4 drives the electric motor 2 to operate, when the vehicle control unit 1 detects that the current vehicle speed is lower than a preset speed, for example, the vehicle speed is lower than 2 km/h, the range extender 4 may be controlled to stop driving the electric motor 2 to operate. The application scenario of this mode may be that, when the driver stops the vehicle with the range extender 4 turned on, the vehicle control unit 1 may control the range extender 4 to stop the driving motor 2 from operating.
In operation, when the range extender is turned on, the electric power generated by the generator 42 in the range extender 4 is mainly used for driving the electric motor 2, and the rest of the electric power can also be used for charging the power battery 3. The vehicle control unit 1 periodically detects the current electric quantity of the power battery 3, and when the current electric quantity of the power battery 3 is greater than or equal to 98%, the vehicle control unit 1 controls the range extender 4 to stop the driving motor 2 to work in order to protect the power battery 3. Therefore, the generator 42 in the range extender 4 can be prevented from continuously charging the full power battery 3 to damage the power battery 3, and accordingly, the power battery 3 can be protected, and the service life of the power battery 3 can be prolonged.
Based on the above, in the forced stop mode, the extended range electric vehicle has weak power, but is fuel-saving and environment-friendly, and when the vehicle controller 1 detects that the electric quantity of the power battery 3 is low, the vehicle controller 1 automatically switches the forced stop mode to the forced start mode, and starts the extended range device 4 to work, so as to protect the power battery 3.
And (III) an electric mode, wherein the vehicle control unit controls the range extender 4 to be switched on and off according to the electric quantity of the power battery 3 and the power demand of the motor. When a driver selects an electric mode, after the vehicle controller 1 detects a key signal corresponding to the mode, the vehicle controller 1 firstly judges the current electric quantity of the power battery 3, and if the current electric quantity of the power battery 3 is greater than a second electric quantity threshold value, or if the current electric quantity of the power battery 3 is less than a third electric quantity threshold value and the current vehicle speed is zero, the range extender 4 is controlled to stop working; and if the current electric quantity of the power battery 3 is lower than the third electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery 3 is greater than the third electric quantity threshold value and less than the second electric quantity threshold value and the current vehicle speed is greater than the preset speed, controlling the range extender 4 to work.
In this mode, the vehicle control unit 1 preferentially controls the power battery 3 to drive the electric motor 2 to work, and the range extender 4 can be closed as long as the current electric quantity of the power battery 3 is greater than the second electric quantity threshold. When the current electric quantity of the power battery 3 is in a dangerous area, that is, the current electric quantity is smaller than the third electric quantity threshold, but the current vehicle speed is zero, the range extender 4 may also stop working. When the current electric quantity of the power battery 3 is between the third electric quantity threshold and the second electric quantity threshold, the vehicle control unit 1 mainly controls the operation of the range extender 4 according to the current vehicle speed, for example, if the current vehicle speed is low and is lower than a preset speed, the range extender 4 may be controlled to stop operating, but if the current vehicle speed is high and is greater than the preset speed, the vehicle control unit 1 controls the operation of the range extender 4.
In a practical application scenario, if the current electric quantity of the power battery 3 is not in an electric quantity danger area, when the force for stepping on an accelerator pedal by a driver is small, the required power corresponding to the motor 2 is small, the output power of the power battery 3 can meet the current consumed power of the motor, the vehicle control unit 1 controls the range extender 4 to be in a closed state, at this time, the power battery 3 independently drives the motor 2 to work, correspondingly, the current vehicle speed is also low, for example, less than or equal to 10 kilometers per hour, and the NVH performance of the whole vehicle is good. When the force of the driver for stepping on the accelerator pedal is large, the required power corresponding to the motor 2 is large, the output power of the power battery 3 is not enough to meet the current power of the motor 2, the vehicle control unit 1 controls the range extender 4 to be started, at the moment, the power battery 3 and the range extender 4 drive the motor 2 to work together, and correspondingly, the current vehicle speed is also large, for example, greater than or equal to 20 kilometers per hour.
Based on the above, in this mode, the extended range electric vehicle preferentially uses the power battery 3 to drive the electric motor 2, when the power battery 3 cannot meet the required power of the electric motor 2, the range extender 4 is started, and when the required power of the electric motor 2 is reduced and the vehicle speed is reduced by a certain threshold value, the range extender 4 is closed again. The mode meets the power demand of the motor 2 on the basis of oil saving, and belongs to an economical mode in practical application.
And (IV) an automatic mode, wherein the vehicle control unit 1 controls the range extender 4 to be switched on and off and the power battery 3 to be switched on and off according to the electric quantity of the power battery 3 and the power demand of the motor 2. In the mode, the vehicle control unit 1 controls the power battery 3 and/or the range extender 4 to drive the motor to work according to the current electric quantity of the power battery 3 and the required power of the motor 2. Specifically, when the driver selects the automatic mode, after the vehicle controller 1 detects a key signal corresponding to the mode, the vehicle controller 1 first determines the current electric quantity of the power battery 3, and if the current electric quantity of the power battery 3 is lower than a third electric quantity threshold and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery 3 is greater than the third electric quantity threshold and smaller than a second electric quantity threshold and the current vehicle speed is greater than a preset speed, the range extender 4 is controlled to operate; and if the current electric quantity of the power battery 3 is greater than the first electric quantity threshold value, controlling the range extender 4 to stop working.
In practice, this mode is a dynamic mode in practical applications. When the vehicle control unit 1 detects the following conditions, the range extender 4 is controlled to work: the current electric quantity of the power battery 3 is lower than a first electric quantity threshold value, but the current vehicle speed is greater than zero; the current electric quantity of the power battery 3 is larger than the third electric quantity threshold value and smaller than the second electric quantity threshold value, and the current vehicle speed is larger than the preset speed. During the operation of the range extender 4, if the generated power of the range extender 4 is greater than or equal to the consumed power of the motor 2, the range extender 4 drives the motor 2 to operate alone. In practical application, the power battery 3 is preferentially used on the basis of meeting the dynamic property of the motor 2, and correspondingly, when the current electric quantity of the power battery 3 is greater than the second electric quantity threshold value and the output power of the power battery 3 is greater than or equal to the consumed power of the motor 2, the power battery 3 can be driven by the motor to work. For example, as shown in table 1, the second charge threshold may be 30%.
In the driving process, the vehicle control unit 1 detects the electric quantity of the power battery 3 and the required power of the electric motor 2 in real time, for example, even if the current electric quantity of the power battery 3 is in the power protection area, when the required power of the electric motor 2 is large, that is, when the current vehicle speed is large, the vehicle control unit 1 controls the range extender 4 to be started so as to meet the required power of the electric motor 2. For another example, when the vehicle control unit 1 detects that the current electric quantity of the power battery 3 is in the low electric quantity alarm region, as shown in table 1, when the current electric quantity is between 15% and 30%, the vehicle control unit 1 controls the range extender 4 to be turned on, so as to meet the power demand of the motor 2. When the vehicle control unit 1 detects that the current electric quantity of the power battery is in a low-electric-quantity dangerous area, that is, the current electric quantity is lower than a third electric quantity threshold value, the vehicle control unit 1 controls the power battery 3 to stop supplying power to the motor 2, controls the range extender 4 to be started, and drives the motor to work independently through the range extender 4.
Optionally, when the vehicle control unit 1 detects that the current electric quantity of the power battery 3 is smaller than the third electric quantity threshold, the range extender 4 may be controlled to be started, and under the condition that the range extender 4 is started, the generated power of the range extender 4 is controlled to be larger than the consumed power of the motor 2, so that the range extender 4 may charge the power battery 3.
Optionally, after the extended range electric vehicle is powered on, the vehicle control unit controls the working mode of the extended range electric vehicle by detecting a mode selection instruction of the user, and when the vehicle control unit does not detect the key signal, the vehicle control unit detects the current default working mode again, and sets the default working mode as the current working mode. Wherein the default operating mode is the operating mode of the extended range electric vehicle when the vehicle is powered off last time.
Based on the above, the control method of the range-extended electric vehicle in this embodiment is actually a control process of the range extender, and may be performed according to the flow shown in fig. 2. In fig. 2, SOC (State Of Charge) is used to represent the remaining capacity Of the power battery.
After the extended range electric vehicle is powered on in the initialization stage of step 1, step 2 is entered, and the vehicle control unit determines the current mode, for example, the vehicle control unit determines that the current mode is the automatic mode. And step 3, the vehicle controller further judges whether the vehicle has a fault, and if the vehicle does not have the fault, the step 4 is carried out. If the fault exists, executing step 301, judging whether the fault is a fault for prohibiting the range extender from working, if the fault is the fault for prohibiting the range extender from working, directly prohibiting the range extender from being started by the vehicle control unit, if the fault is not the fault for prohibiting the range extender from working, entering step 302, detecting whether the fault for restricting the range extender from working exists by the vehicle control unit, for example, if the water temperature is too low or too high, the output power of the range extender is restricted, and if the fault for restricting the range extender from working is not detected by the vehicle control unit, entering step 4. In step 302, if a fault for limiting the operation of the range extender exists, the step 303 is entered, the vehicle control unit detects whether the charging power of the power battery is greater than the allowable charging power, if not, the range extender can operate, the step 4 is entered, if the charging power is greater than the allowable charging power, the range extender cannot be started, and the vehicle control unit directly controls the range extender to be in a closed state.
And then in step 4, the vehicle control unit collects the current vehicle speed, the current electric quantity of the power battery and the like. After the vehicle control unit collects the information, the vehicle control unit enters step 5 to judge the electric quantity interval where the current electric quantity is located, such as a low-electric-quantity dangerous area, a low-electric-quantity alarm area and a power protection area. And after the vehicle controller detects the electric quantity, the vehicle controller enters step 6 to judge the intervals of the current vehicle speed, such as a low-speed area, a medium-speed area and a high-speed area. The vehicle control unit may cache the determination results in steps 5 and 6, and is used to determine whether to allow the range extender to be started in step 7. And starting the range extender if the range extender is allowed to be started, and forbidding the range extender to be started to work if the range extender is not allowed to be started.
In the embodiment of the disclosure, after the extended range electric vehicle is started, the vehicle controller detects a current state of the extended range electric vehicle, such as a situation that a current electric quantity of a power battery, a current charging power and the like are satisfied, and determines a working mode based on a working mode selected by a user. During the running process of the extended range electric automobile in the current working mode, the vehicle control unit detects the current electric quantity of the power battery and the like, and if the situation that the current working mode is not met is detected, the vehicle control unit automatically switches the current working mode to the working mode meeting the conditions. Therefore, the working mode of the extended range electric automobile is controlled based on the current state of the extended range electric automobile on the basis of the subjective requirement of the driver, and the extended range electric automobile is convenient to control in the aspects of dynamic property, economy and the subjective requirement of the driver.
Another exemplary embodiment of the present disclosure provides a control device of a range extender, which is applied to a range-extended electric vehicle, where the range extender includes a vehicle control unit, a range extender, an electric motor, and a power battery, where the range extender includes an electric engine and an electric generator, the vehicle control unit is electrically connected to the range extender, the electric motor, and the power battery, respectively, and the electric generator is electrically connected to the electric motor and the power battery, respectively, as shown in fig. 3, the device includes:
a detection module 310, configured to detect a mode selection instruction;
a control module 320 to:
when a forced starting mode is detected, if the current electric quantity of the power battery is smaller than a first preset threshold value, controlling the range extender to work;
when a forced stop mode is detected, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, controlling the range extender to stop working;
when the electric mode is detected, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, or if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working; if the current electric quantity of the power battery is lower than a first electric quantity threshold and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than a third electric quantity threshold and smaller than a second electric quantity threshold and the current vehicle speed is greater than a preset speed, controlling the range extender to work, wherein the first electric quantity threshold is greater than the second electric quantity threshold, and the second electric quantity threshold is greater than the third electric quantity threshold;
when the automatic mode is detected, if the current electric quantity of the power battery is lower than the third electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is greater than a preset speed, controlling the range extender to work; and if the current electric quantity of the power battery is larger than a first electric quantity threshold value, controlling the range extender to stop working.
Optionally, the control module 320 is further configured to:
and when the forced stop mode is detected, if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working.
Optionally, the control module 320 is further configured to:
and when the forced stop mode is detected, if the current electric quantity of the power battery is greater than a third electric quantity threshold value and less than a second electric quantity threshold value and the current vehicle speed is less than a preset speed, controlling the range extender to stop working.
Optionally, the control module 320 is further configured to:
and if the current electric quantity of the power battery is lower than a third electric quantity threshold value and the current vehicle speed is greater than zero, controlling the range extender to work, and the generated power of the range extender is greater than the consumed power of the motor.
Optionally, the control module 320 is further configured to:
if the current electric quantity of the power battery is larger than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is larger than a preset speed, controlling the range extender to work;
when the generated power of the range extender is smaller than the consumed power of the motor, the power battery and the range extender drive the motor to work together, and when the generated power of the range extender is larger than or equal to the consumed power of the motor, the range extender drives the motor to work alone.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
In the embodiment of the disclosure, after the extended range electric vehicle is started, the vehicle controller detects a current state of the extended range electric vehicle, such as a situation that a current electric quantity of a power battery, a current charging power and the like are satisfied, and determines a working mode based on a working mode selected by a user. During the running process of the extended range electric automobile in the current working mode, the vehicle control unit detects the current electric quantity of the power battery and the like, and if the situation that the current working mode is not met is detected, the vehicle control unit automatically switches the current working mode to the working mode meeting the conditions. Therefore, the working mode of the extended range electric automobile is controlled based on the current state of the extended range electric automobile on the basis of the subjective requirement of the driver, and the extended range electric automobile is convenient to control in the aspects of dynamic property, economy and the subjective requirement of the driver.
It should be noted that: in the control device of the range extender provided in the above embodiment, when the range extender is controlled, only the division of the above functional modules is taken as an example, in practical application, the above function distribution can be completed by different functional modules according to needs, that is, the internal structure of the range extender is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the control device of the range extender and the control method embodiment of the range extender provided in the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiment and will not be described herein again.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. The method for controlling the range extender is applied to the range-extended electric automobile, the range-extended electric automobile comprises a vehicle control unit, the range extender, a motor and a power battery, wherein the range extender comprises an engine and a generator which are electrically connected, the vehicle control unit is respectively electrically connected with the range extender, the motor and the power battery, the generator of the range extender is respectively electrically connected with the motor and the power battery, and the method comprises the following steps:
the vehicle control unit detects a mode selection instruction;
when the vehicle control unit detects a forced starting mode, if the current electric quantity of the power battery is smaller than a first electric quantity threshold value, controlling the range extender to work;
when the vehicle control unit detects a forced stop mode, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, controlling the range extender to stop working;
when the vehicle control unit detects an electric mode, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, or if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working; if the current electric quantity of the power battery is lower than a third electric quantity threshold and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than the third electric quantity threshold and smaller than a second electric quantity threshold and the current vehicle speed is greater than a preset speed, controlling the range extender to work, wherein the first electric quantity threshold is greater than the second electric quantity threshold, and the second electric quantity threshold is greater than the third electric quantity threshold;
when the vehicle control unit detects an automatic mode, if the current electric quantity of the power battery is lower than the third electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is greater than a preset speed, controlling the range extender to work; and if the current electric quantity of the power battery is larger than a first electric quantity threshold value, controlling the range extender to stop working.
2. The method of claim 1, further comprising:
and when the vehicle control unit detects a forced stop mode, if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working.
3. The method of claim 1, further comprising:
when the vehicle control unit detects a forced stop mode, if the current electric quantity of the power battery is larger than a third electric quantity threshold value and smaller than a second electric quantity threshold value, and the current vehicle speed is smaller than a preset speed, the range extender is controlled to stop working.
4. The method of claim 1, wherein if the current charge of the power battery is below a third charge threshold and the current vehicle speed is greater than zero, controlling the range extender to operate comprises:
and if the current electric quantity of the power battery is lower than a third electric quantity threshold value and the current vehicle speed is greater than zero, controlling the range extender to work, and the generated power of the range extender is greater than the consumed power of the motor.
5. The method of claim 1, wherein if the current charge of the power battery is greater than the third charge threshold and less than the second charge threshold and the current vehicle speed is greater than a preset speed, controlling the range extender to operate comprises:
if the current electric quantity of the power battery is larger than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is larger than a preset speed, controlling the range extender to work;
when the generated power of the range extender is smaller than the consumed power of the motor, the power battery and the range extender drive the motor to work together, and when the generated power of the range extender is larger than or equal to the consumed power of the motor, the range extender drives the motor to work alone.
6. The utility model provides a control device of range extender, its characterized in that, the device is applied to range extender electric automobile, range extender electric automobile includes vehicle control unit, range extender, motor, power battery, wherein, the range extender includes electric connection's engine and generator, vehicle control unit respectively with the range extender, motor, power battery electric connection, the generator of range extender respectively with the motor, power battery electric connection, the device includes:
the detection module is used for detecting a mode selection instruction;
a control module to:
when a forced starting mode is detected, if the current electric quantity of the power battery is smaller than a first electric quantity threshold value, controlling the range extender to work;
when a forced stop mode is detected, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, controlling the range extender to stop working;
when the electric mode is detected, if the current electric quantity of the power battery is larger than a second electric quantity threshold value, or if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working; if the current electric quantity of the power battery is lower than a third electric quantity threshold and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than the third electric quantity threshold and smaller than a second electric quantity threshold and the current vehicle speed is greater than a preset speed, controlling the range extender to work, wherein the first electric quantity threshold is greater than the second electric quantity threshold, and the second electric quantity threshold is greater than the third electric quantity threshold;
when the automatic mode is detected, if the current electric quantity of the power battery is lower than the third electric quantity threshold value and the current vehicle speed is greater than zero, or if the current electric quantity of the power battery is greater than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is greater than a preset speed, controlling the range extender to work; and if the current electric quantity of the power battery is larger than a first electric quantity threshold value, controlling the range extender to stop working.
7. The apparatus of claim 6, wherein the control module is further configured to:
and when the forced stop mode is detected, if the current electric quantity of the power battery is smaller than a third electric quantity threshold value and the current vehicle speed is zero, controlling the range extender to stop working.
8. The apparatus of claim 6, wherein the control module is further configured to:
and when the forced stop mode is detected, if the current electric quantity of the power battery is greater than a third electric quantity threshold value and less than a second electric quantity threshold value and the current vehicle speed is less than a preset speed, controlling the range extender to stop working.
9. The apparatus of claim 6, wherein the control module is further configured to:
and if the current electric quantity of the power battery is lower than a third electric quantity threshold value and the current vehicle speed is greater than zero, controlling the range extender to work, and the generated power of the range extender is greater than the consumed power of the motor.
10. The apparatus of claim 6, wherein the control module is further configured to:
if the current electric quantity of the power battery is larger than the third electric quantity threshold value and smaller than the second electric quantity threshold value and the current vehicle speed is larger than a preset speed, controlling the range extender to work;
when the generated power of the range extender is smaller than the consumed power of the motor, the power battery and the range extender drive the motor to work together, and when the generated power of the range extender is larger than or equal to the consumed power of the motor, the range extender drives the motor to work alone.
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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108928242A (en) * 2018-07-12 2018-12-04 爱驰汽车有限公司 Distance increasing unit operating condition control method and device
CN109466375B (en) * 2018-12-05 2020-12-25 北京车和家信息技术有限公司 Range extender control method and device, computer-readable storage medium and vehicle
CN110254254A (en) * 2019-02-23 2019-09-20 福爱电子(贵州)有限公司 A kind of low-speed electronic vehicle distance increasing unit control system and method
CN111791721A (en) * 2019-04-09 2020-10-20 毛奕萱 Range-extending type charger and electric vehicle
CN110126646A (en) * 2019-05-13 2019-08-16 奇瑞新能源汽车技术有限公司 A kind of the distance increasing unit control method and its electric car of extended-range electric vehicle
CN110154789A (en) * 2019-06-06 2019-08-23 三一专用汽车有限责任公司 Electric stirring vehicle and its control method
CN110395201A (en) * 2019-08-07 2019-11-01 大连华锐重工焦炉车辆设备有限公司 A kind of entire car controller software development methodology of the unmanned chassis of distribution combination drive
CN112455248B (en) * 2019-09-06 2022-07-15 北京车和家信息技术有限公司 Control method and device of range extender
CN110696638B (en) * 2019-10-25 2023-04-14 桂林客车发展有限责任公司 Control method for range extender of electric vehicle
CN111775729B (en) * 2020-07-24 2021-12-10 一汽解放汽车有限公司 Driving method of extended range type automobile
CN113370844B (en) * 2021-07-22 2022-08-02 重庆长安新能源汽车科技有限公司 Range extender start-stop control system and method for range extender electric vehicle
CN115431861B (en) * 2022-09-30 2024-02-27 东风汽车股份有限公司 Range-extending refrigerator car

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0721747D0 (en) * 2007-11-06 2007-12-19 Xylodyne Corp Hybird electric off road vehicle extender
AT511553B1 (en) * 2011-06-01 2013-12-15 Avl List Gmbh Method for operating an electrical power generation device
CN103419675B (en) * 2013-09-05 2015-12-09 安徽江淮汽车股份有限公司 A kind of operating method of stroke-increasing electric automobile
FR3027259B1 (en) * 2014-10-21 2018-06-15 Renault S.A.S. METHOD FOR CONTROLLING AND THERMALLY REGULATING A SYSTEM FOR EXTENDING AUTONOMY OF A MOTOR VEHICLE
CN105459844B (en) * 2015-12-30 2017-11-28 北京理工大学 A kind of stroke-increasing electric automobile multi-mode energy management method
CN105922986B (en) * 2016-05-24 2018-10-16 北京新能源汽车股份有限公司 Range-extending type electric vehicle and mode switching control method and system thereof
CN106347132B (en) * 2016-09-05 2019-02-22 北京新能源汽车股份有限公司 Electric automobile and start-stop control method and device of range extender of electric automobile
CN107139752B (en) * 2017-05-22 2019-11-29 奇瑞新能源汽车技术有限公司 Battery pack power management method, device and electric vehicle

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Address after: 241001 No. 226 Huajin South Road, Wuhu High-tech Industrial Development Zone, Wuhu City, Anhui Province

Patentee after: Chery New Energy Automobile Co.,Ltd.

Address before: 241000 No. 226 Hua Jin South Road, Yijiang District, Anhui, Wuhu

Patentee before: CHERY NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd.