CN111688660A - Control method and device for hybrid electric vehicle - Google Patents

Control method and device for hybrid electric vehicle Download PDF

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Publication number
CN111688660A
CN111688660A CN201910184419.XA CN201910184419A CN111688660A CN 111688660 A CN111688660 A CN 111688660A CN 201910184419 A CN201910184419 A CN 201910184419A CN 111688660 A CN111688660 A CN 111688660A
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China
Prior art keywords
battery
energy
motor
output
controlling
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CN201910184419.XA
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Chinese (zh)
Inventor
张全中
刘广丰
陈立松
李云龙
谭建松
张艳青
贺燕铭
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BAIC Motor Powertrain Co Ltd
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BAIC Motor Powertrain Co Ltd
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Priority to CN201910184419.XA priority Critical patent/CN111688660A/en
Publication of CN111688660A publication Critical patent/CN111688660A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/085—Power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/24—Energy storage means
    • B60W2710/242—Energy storage means for electrical energy
    • B60W2710/244—Charge state

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention provides a control method and a device of a hybrid electric vehicle, wherein the method comprises the following steps: acquiring the power required to be output by a motor of the hybrid electric vehicle, the residual capacity of a battery and the state of an engine; determining the running condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual electric quantity of the battery and the state of the engine; if the running working condition is a first running working condition, controlling the battery to output energy to drive the motor to run; and if the running working condition is a second running working condition, controlling the generator to output energy to drive the motor to run. Therefore, the energy consumption of the hybrid electric vehicle can be effectively reduced, and the efficiency of the range extender system is improved, so that the energy utilization efficiency of the hybrid electric vehicle can be improved.

Description

Control method and device for hybrid electric vehicle
Technical Field
The invention relates to the technical field of automobiles, in particular to a control method and a control device for a hybrid electric vehicle.
Background
With the change of science and technology and the increasing emphasis on the environmental protection concept, electric vehicles are popular and used by users. The hybrid electric vehicle has the advantages of good fuel engine dynamic property, quick response and long working time, has the advantages of no pollution of a motor and low noise, and is the vehicle model with the best industrialized and marketized prospect in the electric vehicles. However, the existing hybrid electric vehicle usually selects an engine with smaller power to match with the range extender generator, and under a high-speed and heavy-load working condition, the energy utilization efficiency of the range extender system is lower, so that the overall efficiency is lower. As a result, the energy utilization efficiency of the conventional hybrid vehicle is low.
Disclosure of Invention
The embodiment of the invention aims to provide a control method and a control device of a hybrid electric vehicle, which solve the problem of low energy utilization efficiency of the conventional hybrid electric vehicle.
To achieve the above object, an embodiment of the present invention provides a control method for a hybrid vehicle, including:
acquiring the power required to be output by a motor of the hybrid electric vehicle, the residual capacity of a battery and the state of an engine;
determining the running condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual electric quantity of the battery and the state of the engine;
if the running working condition is a first running working condition, controlling the battery to output energy to drive the motor to run;
and if the running working condition is a second running working condition, controlling the generator to output energy to drive the motor to run.
Optionally, if the driving condition is a first driving condition, the step of controlling the battery to output energy to drive the motor to operate includes:
and if the power required to be output by the motor is larger than the preset power, the residual capacity of the battery is larger than or equal to a first threshold value, and the state of the engine is an off state, controlling the battery to output energy to drive the motor to operate.
Optionally, if the driving condition is a second driving condition, the step of controlling the generator to output energy to drive the motor to operate includes:
if the power required to be output by the motor is larger than the preset power, the residual capacity of the battery is larger than or equal to a first threshold value, and the state of the engine is a starting state, controlling the battery to stop outputting energy, and controlling the generator to output energy, wherein a first part of the generator output energy is used for driving the motor to operate, and a second part of the generator output energy is used for charging the battery;
and if the residual capacity of the battery reaches a second preset threshold value, controlling the generator to stop outputting energy, and controlling the battery to output energy to drive the motor to operate.
Optionally, the step of controlling the battery to output energy to operate the motor or controlling the generator to output energy to operate the motor according to the power required to be output by the motor, the remaining capacity of the battery and the state of the engine includes:
if the power required to be output by the motor is larger than the preset power and the residual electric quantity of the battery is smaller than a first threshold value, controlling the state of the engine to be a starting state, controlling the battery to stop outputting energy, controlling the generator to output a first part of energy to drive the motor to operate, and controlling the generator to output a second part of energy to charge the battery;
and if the residual electric quantity of the battery reaches a second preset threshold value, stopping the generator from outputting energy, and controlling the battery to output energy to supply the motor to operate.
Optionally, the energy output by the generator is split into the first part of energy and the second part of energy via a splitter.
An embodiment of the present invention further provides a control device for a hybrid vehicle, including:
the acquisition module is used for acquiring the power required to be output by a motor of the hybrid electric vehicle, the residual capacity of a battery and the state of an engine;
the determining module is used for determining the running working condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual capacity of the battery and the state of the engine;
the first control module is used for controlling the battery to output energy to drive the motor to operate if the running working condition is a first running working condition;
and the second control module is used for controlling the generator to output energy to drive the motor to operate if the running working condition is a second running working condition.
Optionally, the first control module is configured to control the battery to output energy to drive the electric motor to operate if the power required to be output by the electric motor is greater than a preset power, the remaining capacity of the battery is greater than or equal to a first threshold, and the state of the engine is an off state.
Optionally, the second control module is configured to control the battery to stop outputting energy and control the generator to output energy if the power required to be output by the electric motor is greater than a preset power, the remaining power of the battery is greater than or equal to a first threshold, and the state of the engine is a start state, where a first part of the output energy of the generator is used to drive the electric motor to operate, and a second part of the output energy of the generator is used to charge the battery;
and if the residual capacity of the battery reaches a second preset threshold value, controlling the generator to stop outputting energy, and controlling the battery to output energy to drive the motor to operate.
Optionally, the second control module is configured to control the engine to be in a starting state, control the battery to stop outputting energy, control the generator to output a first part of energy to drive the motor to operate, and control the generator to output a second part of energy to charge the battery, if the power required to be output by the motor is greater than a preset power and the remaining power of the battery maintains that the motor is smaller than a first threshold;
and if the residual electric quantity of the battery reaches a second preset threshold value, stopping the generator from outputting energy, and controlling the battery to output energy to supply the motor to operate.
Optionally, the energy output by the generator is split into the first part of energy and the second part of energy via a splitter.
In the embodiment of the invention, the power required to be output by a motor of a hybrid electric vehicle, the residual capacity of a battery and the state of an engine are obtained; determining the running condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual electric quantity of the battery and the state of the engine; if the running working condition is a first running working condition, controlling the battery to output energy to drive the motor to run; and if the running working condition is a second running working condition, controlling the generator to output energy to drive the motor to run. Therefore, the three parameters of the power required to be output by the motor, the residual capacity of the battery and the state of the engine are used as the basis for controlling the output energy of the battery or the generator, so that the energy consumption of the hybrid electric vehicle can be effectively reduced, the efficiency of the range extender system is improved, and the energy utilization efficiency of the hybrid electric vehicle can be improved.
Drawings
Fig. 1 is a schematic diagram of a control method of a hybrid electric vehicle according to an embodiment of the present invention;
FIG. 2 is a diagram of an energy delivery route for a range extender provided in accordance with an embodiment of the present invention;
fig. 3 is a structural diagram of a control device of a hybrid vehicle according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a control method for a hybrid vehicle, including:
and step 101, acquiring the power required to be output by a motor of the hybrid electric vehicle, the residual capacity of a battery and the state of an engine.
The hybrid electric vehicle may be a series hybrid electric vehicle, a parallel hybrid electric vehicle, or a hybrid electric vehicle, which is not limited herein. Further, it may be that the hybrid vehicle acquires the power required to be output by the motor of the vehicle, the remaining amount of the battery, and the state of the engine; for example, it may be obtained by an ECU, MCU, processing device, or the like of the hybrid vehicle. Preferably, the power required to be output by the motor may be determined by the ECU based on the throttle state.
Wherein, the electric motor may refer to a driving motor of the hybrid vehicle; the remaining capacity of the battery may be referred to as soc (state of charge), which is a ratio of available capacity in the battery of the hybrid electric vehicle to a nominal capacity; the engine can be used for forming a range extender together with a generator, the state of the engine can be the starting and closing state of the engine, and the starting and closing state can be divided into a starting state and a closing state; of course, other states are possible, such as the operating state of the engine under various conditions and loads, and so on, without limitation.
And 102, determining the running condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual capacity of the battery and the state of the engine.
The driving condition may be a driving condition preset in the hybrid vehicle, or may be a driving condition set in a server or a terminal outside the hybrid vehicle, which is not limited herein. For example, a user presets two running conditions through a vehicle-mounted computer, or presets a plurality of running conditions on a server, and after parameter values of three parameters, namely power required to be output by a motor of the hybrid electric vehicle, residual capacity of a battery and a state of an engine, are obtained, the running conditions matched with the parameter values can be found from the preset form conditions.
And 103, if the running working condition is a first running working condition, controlling the battery to output energy to drive the motor to run.
The first driving condition may refer to a general driving condition of the hybrid vehicle, and may be understood as a condition that the motor is driven to operate only by the output energy of the battery. For example, it may be a medium-low speed mode or a short-distance running mode.
Optionally, if the driving condition is a first driving condition, the step of controlling the battery to output energy to drive the motor to operate includes:
and if the power required to be output by the motor is larger than the preset power, the residual capacity of the battery is larger than or equal to a first threshold value, and the state of the engine is an off state, controlling the battery to output energy to drive the motor to operate.
Wherein, in a case where the state of the engine is an off state, the engine may be kept in the off state. The preset power may refer to any power, such as 0, 0.1, etc., without limitation. The first threshold value may be set to any value as needed. The remaining capacity of the battery may refer to any value, such as a ten percent capacity value or a twenty percent capacity value, which is not limited. Preferably, the remaining capacity of the battery may be an electric quantity value that enables the motor to continuously operate for more than 10 minutes according to the current operating condition.
Specifically, the required output power W3 of the electric motor may be greater than 0, the remaining capacity of the battery may be such that the electric motor continues to operate for more than 10 minutes according to the current operating condition, and the engine is in an off state. The engine is controlled to remain in an off state to maintain the motor running only with the energy of the battery.
In this embodiment, only when the power required to be output by the motor is greater than the preset power, the remaining capacity of the battery is greater than or equal to the first threshold, and the engine is in the off state, the hybrid electric vehicle controls the output energy of the battery, so that the over-discharge of the battery can be avoided, and the service life of the battery can be prolonged.
And 104, if the running working condition is a second running working condition, controlling the generator to output energy to drive the motor to run.
The second driving condition may refer to a condition that the generator needs to be controlled to output energy to drive the motor to operate. The electric motor may be driven to operate by only the output energy of the generator, or the generator and the battery may output energy jointly to drive the electric motor to operate, which is not limited in this respect.
Optionally, if the driving condition is a second driving condition, the step of controlling the generator to output energy to drive the motor to operate includes:
if the power required to be output by the motor is larger than the preset power, the residual capacity of the battery is larger than or equal to a first threshold value, and the state of the engine is a starting state, controlling the battery to stop outputting energy, and controlling the generator to output energy, wherein a first part of the generator output energy is used for driving the motor to operate, and a second part of the generator output energy is used for charging the battery;
and if the residual capacity of the battery reaches a second preset threshold value, controlling the generator to stop outputting energy, and controlling the battery to output energy to drive the motor to operate.
In this embodiment, the second preset threshold may be any electric quantity value larger than the first preset threshold, which is not limited in this respect. For example, if the first preset threshold is 10%, the second preset threshold is 100%. In addition, the first part of energy and the second part of energy may be obtained by splitting through a splitter, but may also be obtained by splitting in other manners, and this is not limited.
Specifically, for example, W is engine output power, η 1 is efficiency of converting the engine output power into electric energy, W1 is power of outputting the electric energy by the generator (equal to W × η 1), power required to be output by the electric motor is W3, the preset power is 0, the remaining electric quantity of the battery is W2, the first threshold value is an electric quantity value which enables the electric motor to continuously operate for more than 10 minutes according to the current working condition, the first part of energy may be W3/η 3, where η 3 is efficiency of converting the electric energy into the kinetic energy, and the second part of energy may be W1 η2, where η 2 is efficiency of storing the electric energy into the battery; when W3 is more than 0, the electric quantity of the battery is enough to keep the motor continuously running for more than 10min according to the current working condition, and the engine is started at the moment, the engine is kept in an open state, the battery stops outputting energy outwards, the shunt shunts the energy of W3/eta 3 to the inverter, the rest W1 eta 2 is input to the battery until the electric quantity SOC of the battery is 100% (namely the battery is fully charged), the battery does not output energy outwards in the process, once the battery is fully charged, the engine can stop running, and the motor runs only by outputting energy outwards from the battery.
In the embodiment, the hybrid electric vehicle controls the generator to output part of energy to drive the motor to operate only when the power required to be output by the motor is greater than the preset power, the residual capacity of the battery is greater than or equal to a first threshold value, and the state of the engine is a starting state; thus, the range extender can output energy to drive the motor at a proper time, so that the efficiency of the range extender system can be improved, and the energy utilization efficiency of the hybrid electric vehicle can be improved.
In addition, only the second part of energy is used for charging the battery, so that the charging current of the battery is reduced, and the service life of the battery can be prolonged.
Optionally, the step of controlling the battery to output energy to operate the motor or controlling the generator to output energy to operate the motor according to the power required to be output by the motor, the remaining capacity of the battery and the state of the engine includes:
if the power required to be output by the motor is larger than the preset power and the residual electric quantity of the battery is smaller than a first threshold value, controlling the state of the engine to be a starting state, controlling the battery to stop outputting energy, controlling the generator to output a first part of energy to drive the motor to operate, and controlling the generator to output a second part of energy to charge the battery;
and if the residual electric quantity of the battery reaches a second preset threshold value, stopping the generator from outputting energy, and controlling the battery to output energy to supply the motor to operate.
The embodiment may also refer to the energy transmission route shown in fig. 2, and may also refer to the example data in the previous embodiment, specifically, when W3 is greater than 0, and the electric quantity contained in the battery is enough to keep the electric motor continuously operating for less than 10min according to the current working condition, regardless of whether the engine is operating at this time, the engine needs to operate to generate electricity, the shunt shunts the energy of W3/η 3 to the inverter, the remaining W1 × η 2 is input to the battery until the electric quantity SOC contained in the battery is 100% (i.e., the battery is fully charged), the battery does not output energy outwards in the process, once the battery is fully charged, the engine may stop operating, and only the battery outputs energy outwards to supply the electric motor to operate; wherein, in the case where W3 is 0, the battery stops outputting energy to the outside, and the engine stops operating.
In the embodiment, only when the power required to be output by the motor is greater than the preset power and the residual electric quantity of the battery maintains that the motor is smaller than the first threshold value, the hybrid electric vehicle controls the generator to output partial energy to drive the motor to operate; thus, the range extender can output energy to drive the motor at a proper time, so that the efficiency of the range extender system can be improved, and the energy utilization efficiency of the hybrid electric vehicle can be improved.
Optionally, the energy output by the generator is split into the first part of energy and the second part of energy via a splitter. Referring specifically to fig. 2, a first output of the shunt may be connected to a battery, and a second output of the shunt may be connected to an inverter disposed on the motor, so as to achieve the purpose of shunting. Therefore, the shunt is used for shunting, so that the cost is low and the shunt is more convenient.
In the embodiment of the invention, the power required to be output by a motor of a hybrid electric vehicle, the residual capacity of a battery and the state of an engine are obtained; determining the running condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual electric quantity of the battery and the state of the engine; if the running working condition is a first running working condition, controlling the battery to output energy to drive the motor to run; and if the running working condition is a second running working condition, controlling the generator to output energy to drive the motor to run. Therefore, the three parameters of the power required to be output by the motor, the residual capacity of the battery and the state of the engine are used as the basis for controlling the output energy of the battery or the generator, so that the energy consumption of the hybrid electric vehicle can be effectively reduced, the efficiency of the range extender system is improved, and the energy utilization efficiency of the hybrid electric vehicle can be improved.
In addition, the embodiment of the invention can also expand the selection range of the engine matched with the range extender system, and not only can select the conventional engine with low power, but also can select the engine with power slightly larger than the power required by the range extender.
Referring to fig. 3, fig. 3 is a block diagram of a control device of a hybrid vehicle according to an embodiment of the present invention, and as shown in fig. 3, the control device 300 of the hybrid vehicle includes: an acquisition module 301, a determination module 302, a first control module 303, and a second control module 304. Wherein:
an obtaining module 301, configured to obtain power required to be output by a motor of a hybrid electric vehicle, a remaining battery capacity of a battery, and a state of an engine;
the determining module 302 is used for determining the running condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual capacity of the battery and the state of the engine;
the first control module 303 is configured to control the battery to output energy to drive the motor to operate if the driving condition is a first driving condition;
and the second control module 304 is configured to control the generator to output energy to drive the motor to operate if the driving condition is a second driving condition.
Optionally, the first control module 303 is configured to control the battery to output energy to drive the electric motor to operate if the power required to be output by the electric motor is greater than a preset power, the remaining power of the battery is greater than or equal to a first threshold, and the state of the engine is an off state.
Optionally, the second control module 304 is configured to control the battery to stop outputting energy and control the generator to output energy if the power required to be output by the electric motor is greater than a preset power, the remaining capacity of the battery is greater than or equal to a first threshold, and the state of the engine is a start state, where a first part of the generator output energy is used to drive the electric motor to operate, and a second part of the generator output energy is used to charge the battery;
and if the residual capacity of the battery reaches a second preset threshold value, controlling the generator to stop outputting energy, and controlling the battery to output energy to drive the motor to operate.
Optionally, the second control module 304 is configured to control the engine to be in a start state, control the battery to stop outputting energy, control the generator to output a first part of energy to drive the motor to operate, and control the generator to output a second part of energy to charge the battery, if the power required to be output by the motor is greater than a preset power and the remaining capacity of the battery maintains that the motor is smaller than a first threshold;
and if the residual electric quantity of the battery reaches a second preset threshold value, stopping the generator from outputting energy, and controlling the battery to output energy to supply the motor to operate.
Optionally, the energy output by the generator is split into the first part of energy and the second part of energy via a splitter.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A control method of a hybrid vehicle, characterized by comprising:
acquiring the power required to be output by a motor of the hybrid electric vehicle, the residual capacity of a battery and the state of an engine;
determining the running condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual electric quantity of the battery and the state of the engine;
if the running working condition is a first running working condition, controlling the battery to output energy to drive the motor to run;
and if the running working condition is a second running working condition, controlling the generator to output energy to drive the motor to run.
2. The method of claim 1, wherein the step of controlling the battery to output energy to drive the motor to operate if the driving condition is a first driving condition comprises:
and if the power required to be output by the motor is larger than the preset power, the residual capacity of the battery is larger than or equal to a first threshold value, and the state of the engine is an off state, controlling the battery to output energy to drive the motor to operate.
3. The method of claim 1, wherein the step of controlling the generator to output energy to drive the motor to operate if the driving condition is a second driving condition comprises:
if the power required to be output by the motor is larger than the preset power, the residual capacity of the battery is larger than or equal to a first threshold value, and the state of the engine is a starting state, controlling the battery to stop outputting energy, and controlling the generator to output energy, wherein a first part of the generator output energy is used for driving the motor to operate, and a second part of the generator output energy is used for charging the battery;
and if the residual capacity of the battery reaches a second preset threshold value, controlling the generator to stop outputting energy, and controlling the battery to output energy to drive the motor to operate.
4. The method of claim 1, wherein the step of controlling the battery to output energy for motor operation or controlling the generator to output energy for motor operation based on the power required to be output by the motor, the remaining amount of the battery, and the state of the engine comprises:
if the power required to be output by the motor is larger than the preset power and the residual electric quantity of the battery is smaller than a first threshold value, controlling the state of the engine to be a starting state, controlling the battery to stop outputting energy, controlling the generator to output a first part of energy to drive the motor to operate, and controlling the generator to output a second part of energy to charge the battery;
and if the residual electric quantity of the battery reaches a second preset threshold value, stopping the generator from outputting energy, and controlling the battery to output energy to supply the motor to operate.
5. The method according to claim 3 or 4, wherein the energy output by the generator is split into the first part of energy and the second part of energy via a splitter.
6. A control device for a hybrid vehicle, characterized by comprising:
the acquisition module is used for acquiring the power required to be output by a motor of the hybrid electric vehicle, the residual capacity of a battery and the state of an engine;
the determining module is used for determining the running working condition of the hybrid electric vehicle according to the power required to be output by the motor of the hybrid electric vehicle, the residual capacity of the battery and the state of the engine;
the first control module is used for controlling the battery to output energy to drive the motor to operate if the running working condition is a first running working condition;
and the second control module is used for controlling the generator to output energy to drive the motor to operate if the running working condition is a second running working condition.
7. The device of claim 6, wherein the first control module is configured to control the battery to output energy to drive the electric motor to operate if the power required to be output by the electric motor is greater than a preset power, the remaining capacity of the battery is greater than or equal to a first threshold, and the state of the engine is an off state.
8. The device of claim 6, wherein the second control module is configured to control the battery to stop outputting energy and control the generator to output energy if the power required to be output by the electric motor is greater than a preset power, the remaining capacity of the battery is greater than or equal to a first threshold, and the state of the engine is a start state, wherein a first part of the generator output energy is used for driving the electric motor to operate, and a second part of the generator output energy is used for charging the battery;
and if the residual capacity of the battery reaches a second preset threshold value, controlling the generator to stop outputting energy, and controlling the battery to output energy to drive the motor to operate.
9. The device of claim 6, wherein the second control module is configured to control the engine to be in a start state, control the battery to stop outputting energy, and control the generator to output a first portion of energy to drive the motor to operate and control the generator to output a second portion of energy to charge the battery if the power required to be output by the motor is greater than a preset power and the remaining capacity of the battery maintains that the motor is less than a first threshold;
and if the residual electric quantity of the battery reaches a second preset threshold value, stopping the generator from outputting energy, and controlling the battery to output energy to supply the motor to operate.
10. The apparatus of claim 8 or 9, wherein the energy output by the generator is split into the first portion of energy and the second portion of energy via a splitter.
CN201910184419.XA 2019-03-12 2019-03-12 Control method and device for hybrid electric vehicle Pending CN111688660A (en)

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