WO2017201958A1 - 电动汽车及电动汽车中增程器的维护控制方法和系统 - Google Patents

电动汽车及电动汽车中增程器的维护控制方法和系统 Download PDF

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Publication number
WO2017201958A1
WO2017201958A1 PCT/CN2016/103126 CN2016103126W WO2017201958A1 WO 2017201958 A1 WO2017201958 A1 WO 2017201958A1 CN 2016103126 W CN2016103126 W CN 2016103126W WO 2017201958 A1 WO2017201958 A1 WO 2017201958A1
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WIPO (PCT)
Prior art keywords
electric vehicle
range extender
engine
controller
maintenance control
Prior art date
Application number
PCT/CN2016/103126
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English (en)
French (fr)
Inventor
易迪华
周金龙
秦兴权
金硕
王金龙
崔天祥
李从心
Original Assignee
北京新能源汽车股份有限公司
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Application filed by 北京新能源汽车股份有限公司 filed Critical 北京新能源汽车股份有限公司
Publication of WO2017201958A1 publication Critical patent/WO2017201958A1/zh

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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
    • 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
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • 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
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/44—Drive Train control parameters related to combustion engines
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/44—Control modes by parameter estimation
    • 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

Definitions

  • the invention relates to the technical field of electric vehicles, in particular to a maintenance control method for a range extender in an electric vehicle, a maintenance control system for a range extender in an electric vehicle, and an electric vehicle.
  • the control technology of the range extender pays more attention to the start-stop and working condition control of the normal working of the automobile, and does not consider how the maintenance personnel operate the engine during the post-engine maintenance.
  • the control of the engine between the extended program car and the traditional car is very different.
  • the control of the extended-range car engine is controlled by the VCU (Vehicle Control Unit) strategy, and there is little human intervention, and even the engine cannot be directly controlled. There is a situation that it is impossible to start when the engine is started, which is not conducive to the maintenance and repair of the car range extender.
  • VCU Vehicle Control Unit
  • the present invention aims to solve at least one of the technical problems in the related art to some extent.
  • the first object of the present invention is to provide a maintenance control method for a range extender in an electric vehicle, which achieves the purpose of detecting and repairing the range extender, and effectively reduces the difficulty of repairing and maintaining the range extender, and It reduces the probability that the range extender enters the maintenance control mode due to user misoperation, which is beneficial to ensure vehicle safety.
  • a second object of the present invention is to provide a maintenance control system for a range extender in an electric vehicle.
  • a third object of the present invention is to provide an electric vehicle.
  • a first aspect of the present invention provides a maintenance control method for a range extender in an electric vehicle, comprising the steps of: acquiring a nacelle cover state of the electric vehicle and a current gear position of the electric vehicle, and acquiring The accelerator pedal information and the brake pedal information of the electric vehicle; when the nacelle cover of the electric vehicle is in an open state and the current gear position of the electric vehicle is neutral, according to the accelerator pedal information and the brake of the electric vehicle The pedal information determines whether the range extender enters a maintenance control mode; if the range extender enters a maintenance control mode, the engine and the generator in the range extender are controlled to start the engine and control The engine operates under different operating conditions.
  • the maintenance control method of the range extender in the electric vehicle first, the state of the nacelle cover of the electric vehicle and the current gear position of the electric vehicle are acquired, and the accelerator pedal information and the brake pedal information of the electric vehicle are acquired, and then the electric motor is obtained.
  • the range extender When the cabin cover of the automobile is in an open state and the current gear position of the electric vehicle is neutral, it is determined whether the range extender enters the maintenance control mode according to the accelerator pedal information of the electric vehicle and the brake pedal information, and if the range extender enters the maintenance control mode, Then, by controlling the engine and the generator in the range extender to start the engine and controlling the engine to run under different working conditions, the purpose of the range extender detection and maintenance is achieved, for example, the engine in the range extender can be detected. Maintenance, effectively reducing the difficulty of maintenance and maintenance of the range extender, and using the above method to determine whether the range extender enters the maintenance control mode, can avoid the delay of the range extender into the maintenance control mode due to user misoperation, which is beneficial to ensure the vehicle Security.
  • the maintenance control method of the range extender in the above electric vehicle according to the present invention may further have the following additional technical features:
  • determining that the range extender enters the maintenance control mode according to the accelerator pedal information and the brake pedal information of the electric vehicle includes: determining whether the accelerator pedal opening degree of the electric vehicle is greater than or equal to a preset value for a first preset time; if it is determined that the accelerator pedal opening degree of the electric vehicle is greater than or equal to the first preset value and continues for the first preset time, controlling the accelerator pedal of the electric vehicle The opening degree is maintained greater than or equal to the first preset value, and further determining whether the brake pedal of the electric vehicle is continuously triggered for a preset number of times within a second preset time; if the brake pedal of the electric vehicle is further determined The preset number of times is continuously triggered during the second preset time, and the accelerator pedal is released after the brake pedal is kept in the current state for a third preset time, so that the extended range is performed.
  • the device enters the maintenance control mode.
  • controlling the engine to operate under different operating conditions includes controlling the engine to switch between an idle condition and an accelerated condition by controlling an accelerator pedal of the electric vehicle, wherein When the engine is running in the acceleration condition, the engine speed is less than or equal to a preset limit speed.
  • the range extender is controlled to exit the maintenance control mode when the electric vehicle meets any of the following conditions:
  • the brake pedal is triggered and continues for a fourth preset time.
  • the power output of the generator and the drive motor of the electric vehicle is also turned off after the engine is started.
  • a second aspect of the present invention provides a maintenance control system for a range extender in an electric vehicle, comprising: a generator controller, the generator controller and a generator in the range extender Connected to control the generator; an engine controller coupled to the engine in the range extender to control the engine, wherein the engine is coupled to the generator; a controller, the range controller being respectively connected to the generator controller and the engine controller; a vehicle controller, the vehicle controller being connected to the range controller, The vehicle controller is configured to acquire a nacelle cover state of the electric car and a current gear position of the electric car, and acquire an accelerator pedal information and a brake pedal information of the electric car, and a machine at the electric car When the hatch is in an open state and the current gear position of the electric vehicle is neutral, the vehicle controller determines whether the range extender needs to enter the maintenance control mode according to the accelerator pedal information and the brake pedal information of the electric vehicle.
  • the range controller And transmitting a maintenance control mode entry command to the range controller when the range extender needs to enter a maintenance control mode, the range controller entering an instruction according to the maintenance control mode by the engine controller pair
  • the engine is controlled and the generator is controlled by the generator controller to cause the engine to start, and the engine is controlled to operate under different operating conditions by the engine controller.
  • the vehicle controller acquires the state of the nacelle cover of the electric vehicle and the current gear position of the electric vehicle, and acquires the accelerator pedal information and the brake pedal information of the electric vehicle. And when the cabin cover of the electric vehicle is open and the current gear position of the electric vehicle is neutral, the vehicle controller determines whether the range extender needs to enter the maintenance control mode according to the accelerator pedal information of the electric vehicle and the brake pedal information, and is increasing When the program needs to enter the maintenance control mode, it sends a maintenance control mode entry command to the range controller.
  • the range controller controls the engine according to the maintenance control mode and controls the generator through the engine controller.
  • the engine in the range extender can be inspected and repaired, effectively reducing the range extender. Difficulties in maintenance and repair, and use the above method to judge the range extender No go into maintenance mode control, user errors can be avoided by leaving the range extender strayed into maintenance mode control, help to ensure the safety of the vehicle.
  • the maintenance control system of the range extender in the above electric vehicle may also have the following additional technical features:
  • the vehicle controller determines, according to the accelerator pedal information and the brake pedal information of the electric vehicle, whether the range extender needs to enter a maintenance control mode, wherein the vehicle control Determining whether the accelerator pedal opening degree of the electric vehicle is greater than or equal to a first preset value and continuing for a first preset time; if it is determined that the accelerator pedal opening degree of the electric vehicle is greater than or equal to the first preset value and continuing The first preset time, and when the accelerator pedal opening of the electric vehicle is maintained at least equal to the first preset value, the vehicle controller further determines whether the brake pedal of the electric vehicle is in the second The preset number of times is continuously triggered within a preset time; if it is further determined that the brake pedal of the electric vehicle is continuously triggered by the preset number of times in the second preset time, and the brake pedal is maintained in the current state And after the third preset time, the accelerator pedal is released, and the vehicle controller determines that the range extender needs to enter the maintenance control mode.
  • the engine controller controls the engine to switch between an idle condition and an acceleration condition according to the received accelerator pedal control signal, wherein When the engine is running in the acceleration condition, the engine speed is less than or equal to a preset limit speed.
  • the vehicle controller determines that the range extender needs to be controlled to exit the maintenance control mode:
  • the brake pedal is triggered and continues for a fourth preset time.
  • the vehicle controller further turns off the power output of the generator through the generator controller and turns off by the motor controller in the electric vehicle. Drive the power output of the motor.
  • the range extender controller is integrated in the vehicle controller.
  • an embodiment of the third aspect of the present invention provides an electric vehicle including: a maintenance control system for a range extender in an electric vehicle according to an embodiment of the second aspect of the present invention.
  • the electric vehicle of the embodiment of the invention achieves the purpose of detecting and maintaining the range extender through the maintenance control system of the range extender described above, for example, the engine in the range extender can be detected and repaired, thereby effectively reducing the range extender.
  • the difficulty of overhauling and maintaining, and judging whether the range extender enters the maintenance control mode by the above method can avoid the delay of the range extender into the maintenance control mode due to the user's misoperation, which is beneficial to ensure the safety of the vehicle.
  • FIG. 1 is a flow chart of a maintenance control method for a range extender in an electric vehicle according to an embodiment of the present invention.
  • FIG. 2 is a flow chart for determining that a range extender enters a maintenance control mode, in accordance with one embodiment of the present invention.
  • FIG. 3 is a flow chart of a maintenance control method for a range extender in an electric vehicle according to another embodiment of the present invention.
  • FIG. 4 is a block schematic diagram of a maintenance control system for a range extender in an electric vehicle according to an embodiment of the present invention.
  • FIG. 1 is a flow chart of a maintenance control method for a range extender in an electric vehicle according to an embodiment of the present invention.
  • the maintenance control method of the range extender in the electric vehicle includes the following steps:
  • an electric vehicle may have a nacelle cover sensor, a gear position sensor, an accelerator pedal sensor, and a brake pedal sensor.
  • the nacelle cover state of the electric vehicle can be obtained through the nacelle cover sensor
  • the current gear position of the electric vehicle can be obtained through the gear position sensor
  • the accelerator pedal information of the electric vehicle can be obtained through the accelerator pedal sensor
  • the brake pedal sensor can be obtained through the brake pedal sensor.
  • determining that the range extender enters the maintenance control mode according to the accelerator pedal information and the brake pedal information of the electric vehicle may include the following steps:
  • S21 Determine whether the accelerator pedal opening degree of the electric vehicle is greater than or equal to the first preset value and continues for the first preset time.
  • the first preset value and the first preset time may be calibrated according to actual conditions.
  • the first preset value may be 80%, and the first preset time may be 60 s.
  • the accelerator pedal opening degree of the electric vehicle is greater than or equal to the first preset value and continues for the first preset time, controlling the accelerator pedal opening degree of the electric vehicle to be greater than or equal to the first preset value, and further determining the system of the electric vehicle.
  • the moving pedal is continuously triggered for a preset number of times within the second preset time.
  • the second preset time and the preset number of times may be calibrated according to actual conditions.
  • the second preset time may be 20 s, and the preset number of times may be 3 times.
  • the third preset time may be calibrated according to actual conditions.
  • the third preset time may be 10 s.
  • the vehicle controller detects the current state of the vehicle.
  • the vehicle controller detects the state of the nacelle cover of the electric vehicle and the current gear position of the electric vehicle.
  • the vehicle controller further Whether the range extender enters the maintenance control mode is determined based on the accelerator pedal information of the electric vehicle and the brake pedal information.
  • FIG. 3 is a flowchart of a maintenance control method of a range extender in an electric vehicle according to a specific example of the present invention.
  • the maintenance control process of the range extender in the electric vehicle may include the following steps:
  • step S102 Determine whether the cabin cover of the electric vehicle is in an open state. If yes, go to step S103; if no, go back to step S102.
  • step S103 Determine whether the current gear position of the electric vehicle is in a neutral position. If yes, go to step S104; if no, go back to step S102.
  • step S104 Determine whether the accelerator pedal opening degree of the electric vehicle is greater than or equal to 80%. If yes, go to step S105; if no, go back to step S102.
  • step S105 Determine that the accelerator pedal opening degree of the electric vehicle is greater than or equal to 80% and lasts for 60s. If yes, go to step S106; if no, go back to step S102.
  • the accelerator pedal opening of the electric vehicle is maintained at 80% or more.
  • step S107 Determine whether the brake pedal of the electric vehicle is triggered. If yes, go to step S108; if no, go back to step S102.
  • step S108 determining that the brake pedal of the electric vehicle is continuously triggered three times within 20 seconds. If yes, go to step S109; if no, go back to step S102.
  • step S110 determining whether the accelerator pedal of the electric vehicle is released. If yes, go to step S111; if no, go back to step S102.
  • the range extender enters the maintenance control mode.
  • the vehicle may be triggered to enter the maintenance control mode by the diagnosis device and the vehicle, or the maintenance program may be used to control the vehicle to enter the maintenance control mode.
  • the conditions for the vehicle to enter the maintenance control mode may be configured according to actual conditions, as long as the user can be prevented from operating by mistake and the mode is activated, and the safety of the vehicle is ensured, which will not be described in detail herein.
  • the power output of the generator and the driving motor of the electric vehicle can also be turned off.
  • controlling the engine to operate under different operating conditions may include controlling the engine to switch between an idle condition and an accelerated condition by controlling an accelerator pedal of the electric vehicle, wherein the engine is operating at an acceleration In the working condition, the engine speed is less than or equal to the preset limit speed.
  • the preset limit speed can be calibrated according to the actual situation.
  • the engine can be controlled by the maintenance personnel like the engine of the conventional fuel vehicle (ie, the control method of the conventional automobile idle mode), when the user controls the accelerator pedal of the electric vehicle,
  • the vehicle controller receives the information of the accelerator pedal and forwards it to the engine controller, and then the engine controller generates a corresponding control signal according to the information to control the engine to switch between the idle condition and the acceleration condition, thereby operating the engine controller
  • the user's idle speed control of the engine is realized without the hard-wire signal of the accelerator pedal, which effectively reduces the difficulty of overhauling and maintaining the range extender.
  • the accelerator pedal signal of the electric vehicle is not directly connected to the engine controller, and the target controller provides the target torque to the engine controller during normal engine operation to control the operation of the engine.
  • the accelerator pedal signal of the electric vehicle is forwarded by the vehicle controller to the engine controller for idle speed control, and the starting of the engine follows the starting method when the range extender is working normally.
  • the accelerator pedal of the conventional fuel automobile mentioned in the example is connected to the engine controller, the engine controller directly analyzes the information of the accelerator pedal, and generates corresponding control signals to control the operation of the engine, and the above electric vehicle
  • the accelerator pedal is directly connected to the vehicle controller, and the vehicle controller analyzes the accelerator pedal information.
  • the control range extender exits the maintenance control mode.
  • the fourth preset time may be calibrated according to actual conditions, for example, the fourth preset time is 10 s.
  • the vehicle may be triggered to exit the maintenance control mode by the cooperation of the diagnostic device and the vehicle, or the maintenance program may be used to control the vehicle to exit the maintenance control mode.
  • the conditions for the vehicle to exit the maintenance control mode can be specifically configured according to actual conditions. It will not be detailed here.
  • the maintenance control method of the range extender in the electric vehicle first, the state of the nacelle cover of the electric vehicle and the current gear position of the electric vehicle are acquired, and the accelerator pedal information and the brake pedal information of the electric vehicle are acquired, and then the electric motor is obtained.
  • FIG. 4 is a block schematic diagram of a maintenance control system for a range extender in an electric vehicle according to an embodiment of the present invention.
  • the maintenance control system of the range extender in the electric vehicle includes a generator controller 100, an engine controller 200, a range controller 300, and a vehicle controller 400.
  • the generator controller 100 is coupled to the generator 510 in the range extender 500 to control the generator 510.
  • Engine controller 200 is coupled to engine 520 in range extender 500 to control engine 520, wherein engine 520 is coupled to generator 510.
  • Ranger controller 300 with generator controller 100 and engine control, respectively The device 200 is connected.
  • the vehicle controller 400 is connected to the range controller 300.
  • the vehicle controller 400 is configured to acquire the cabin cover state of the electric vehicle and the current gear position of the electric vehicle, and obtain the accelerator pedal information and the brake pedal information of the electric vehicle.
  • the vehicle controller 400 determines whether the range extender 500 needs to enter the maintenance control mode according to the accelerator pedal information and the brake pedal information of the electric vehicle, and The maintenance control mode entry command is sent to the range controller 300 when the range extender 500 needs to enter the maintenance control mode, and the range controller 300 controls the engine 520 through the engine controller 200 according to the maintenance control mode entry command and generates power.
  • the machine controller 100 controls the generator 510 to start the engine 520 and controls the engine 520 to operate under different operating conditions by the engine controller 200. Wherein, after the engine 520 is started, the vehicle controller 400 also turns off the power output of the generator 520 through the generator controller 100 and turns off the power output of the drive motor through the motor controller in the electric vehicle.
  • an electric vehicle may have a nacelle cover sensor, a gear position sensor, an accelerator pedal sensor, and a brake pedal sensor.
  • the nacelle cover state of the electric vehicle can be obtained through the nacelle cover sensor
  • the current gear position of the electric vehicle can be obtained through the gear position sensor
  • the accelerator pedal information of the electric vehicle can be obtained through the accelerator pedal sensor
  • the brake pedal sensor can be obtained through the brake pedal sensor.
  • the vehicle controller 400 determines whether the range extender 500 needs to enter the maintenance control mode according to the accelerator pedal information and the brake pedal information of the electric vehicle, wherein the vehicle controller 400 determines the electric vehicle. Whether the accelerator pedal opening degree is greater than or equal to the first preset value and lasts for the first preset time; if it is determined that the accelerator pedal opening degree of the electric vehicle is greater than or equal to the first preset value and continues for the first preset time, and the throttle of the electric vehicle When the pedal opening degree is maintained greater than or equal to the first preset value, the vehicle controller 400 further determines whether the brake pedal of the electric vehicle is continuously triggered for a preset number of times within the second preset time; if the brake pedal of the electric vehicle is further determined The preset number of times is continuously triggered during the second preset time, and after the brake pedal is kept in the current state and the accelerator pedal is released after the third preset time, the vehicle controller 400 determines that the range extender 500 needs to enter the maintenance control mode.
  • the first preset value, the first preset time, the second preset time, the preset number of times, and the third preset time may all be calibrated according to actual conditions.
  • the first preset value may be 80%
  • a preset time may be 60s
  • a second preset time may be 20s
  • a preset number of times may be 3 times
  • a third preset time may be 10s.
  • the vehicle controller 400 detects the current state of the vehicle. First, the vehicle controller 400 detects the state of the nacelle cover of the electric vehicle and the current gear position of the electric vehicle. When the nacelle cover of the electric vehicle is in an open state and the current gear position of the electric vehicle is neutral (N gear), the vehicle controller The 400 further determines whether the range extender 500 enters the maintenance control mode based on the accelerator pedal information of the electric vehicle and the brake pedal information.
  • the vehicle may be triggered to enter the maintenance control mode by the diagnosis device and the vehicle, or the maintenance program may be used to control the vehicle to enter the maintenance control mode.
  • the conditions for the vehicle to enter the maintenance control mode may be configured according to actual conditions, as long as the user can be prevented from operating by mistake and the mode is activated, and the safety of the vehicle is ensured, which will not be described in detail herein.
  • engine controller 200 controls engine 520 to switch between idle and acceleration conditions based on the received accelerator pedal control signal, wherein engine 520 is operating.
  • the engine speed is less than or equal to the preset limit speed.
  • the preset limit speed can be calibrated according to the actual situation.
  • the engine 520 can be controlled by the maintenance personnel like the engine of the conventional fuel automobile (ie, the control method of the conventional automobile idle mode) when the user controls the accelerator pedal of the electric vehicle.
  • the vehicle controller 400 receives the information of the accelerator pedal and forwards it to the engine controller 200, and then the engine controller 200 generates a corresponding control signal according to the information to control the engine 520 to switch between the idle condition and the acceleration condition. Therefore, the idle control of the engine 520 by the user is realized in the case that the engine controller 200 has no hard-wire signal input of the accelerator pedal, which effectively reduces the difficulty of repairing and maintaining the range extender 500.
  • the accelerator pedal signal of the electric vehicle is not directly connected to the engine controller, and the target torque is supplied to the engine controller by the vehicle controller 400 during normal engine operation to control the operation of the engine.
  • the accelerator pedal signal of the electric vehicle is forwarded by the vehicle controller 400 to the engine controller 200 for idle speed control, and the start of the engine 520 follows the starting method when the range extender 500 is operating normally.
  • the accelerator pedal of the conventional fuel automobile mentioned in the example is connected to the engine controller, the engine controller directly analyzes the information of the accelerator pedal, and generates corresponding control signals to control the operation of the engine, and the above electric vehicle
  • the accelerator pedal is directly connected to the vehicle controller, and the vehicle controller analyzes the accelerator pedal information.
  • the engine 520 in the range extender 500 can be controlled to switch between the idle condition and the acceleration condition by controlling the stepping depth of the accelerator pedal of the electric vehicle. In order to maintain the corresponding inspection and maintenance. Thereby, it is convenient for maintenance personnel to detect and maintain the range extender 500 of the electric vehicle.
  • the vehicle controller 400 controls the range extender 500 to exit the maintenance control mode.
  • the fourth preset time may be calibrated according to actual conditions, for example, the fourth preset time is 10 s.
  • the vehicle can be triggered by the cooperation of the diagnostic device and the vehicle.
  • the maintenance control mode is issued, or the maintenance program is used to control the vehicle to exit the maintenance control mode.
  • the conditions for the vehicle to exit the maintenance control mode can be specifically configured according to actual conditions. It will not be detailed here.
  • the vehicle controller acquires the state of the nacelle cover of the electric vehicle and the current gear position of the electric vehicle, and acquires the accelerator pedal information and the brake pedal information of the electric vehicle. And when the cabin cover of the electric vehicle is open and the current gear position of the electric vehicle is neutral, the vehicle controller determines whether the range extender needs to enter the maintenance control mode according to the accelerator pedal information of the electric vehicle and the brake pedal information, and is increasing When the program needs to enter the maintenance control mode, it sends a maintenance control mode entry command to the range controller.
  • the range controller controls the engine according to the maintenance control mode and controls the generator through the engine controller.
  • the engine in the range extender can be inspected and repaired, effectively reducing the range extender. Difficulties in maintenance and repair, and use the above method to judge the range extender No go into maintenance mode control, user errors can be avoided by leaving the range extender strayed into maintenance mode control, help to ensure the safety of the vehicle.
  • An electric vehicle includes a maintenance control system for a range extender in an electric vehicle according to any of the above embodiments of the present invention.
  • the electric vehicle of the embodiment of the invention achieves the purpose of detecting and maintaining the range extender through the maintenance control system of the range extender described above, for example, the engine in the range extender can be detected and repaired, thereby effectively reducing the range extender.
  • the difficulty of overhauling and maintaining, and judging whether the range extender enters the maintenance control mode by the above method can avoid the delay of the range extender into the maintenance control mode due to the user's misoperation, which is beneficial to ensure the safety of the vehicle.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements, unless otherwise specified Limited. Common to the field For the skilled person, the specific meaning of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

Abstract

一种电动汽车中增程器的维护控制方法，该方法包括以下步骤：获取电动汽车的机舱盖状态和电动汽车的当前档位，并获取电动汽车的油门踏板信息和制动踏板信息；当电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡时，根据电动汽车的油门踏板信息和制动踏板信息判断增程器是否进入维护控制模式；如果增程器进入维护控制模式，则通过对增程器中的发动机和发电机进行控制以使发动机启动，并控制发动机在不同工况下运行，达到了对增程器检测维修的目的；以及一种电动汽车中增程器的维护控制系统及电动汽车。

Description

电动汽车及电动汽车中增程器的维护控制方法和系统 技术领域
本发明涉及电动汽车技术领域，特别涉及一种电动汽车中增程器的维护控制方法、一种电动汽车中增程器的维护控制系统和一种电动汽车。
背景技术
现有增程式汽车中，对增程器的控制技术多关注于汽车正常工作时的启停及工况控制，未考虑后期发动机维护时，维修人员如何操作发动机。
目前增程式汽车和传统汽车对发动机的控制差别很大，其中，增程式汽车发动机的控制受VCU(Vehicle Control Unit，整车控制器)策略控制，人为干预很少，甚至无法对发动机进行直接控制，出现想启动发动机时无法启动的情况，不利于对汽车增程器的检修维护。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本发明的第一个目的在于提出一种电动汽车中增程器的维护控制方法，达到了增程器检测维修的目的，有效降低了对增程器进行检修维护的难度，而且可以降低因用户误操作而使增程器进入维护控制模式的机率，有利于保证车辆安全性。
本发明的第二目的在于提出一种电动汽车中增程器的维护控制系统。
本发明的第三目的在于提出一种电动汽车。
为实现上述目的，本发明第一方面实施例提出了一种电动汽车中增程器的维护控制方法，包括以下步骤：获取电动汽车的机舱盖状态和所述电动汽车的当前档位，并获取所述电动汽车的油门踏板信息和制动踏板信息；当所述电动汽车的机舱盖处于打开状态且所述电动汽车的当前档位为空挡时，根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器是否进入维护控制模式；如果所述增程器进入维护控制模式，则通过对所述增程器中的发动机和发电机进行控制以使所述发动机启动，并控制所述发动机在不同工况下运行。
根据本发明实施例的电动汽车中增程器的维护控制方法，首先获取电动汽车的机舱盖状态和电动汽车的当前档位，并获取电动汽车的油门踏板信息和制动踏板信息，而后当电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡时，根据电动汽车的油门踏板信息和制动踏板信息判断增程器是否进入维护控制模式，如果增程器进入维护控制模式， 则通过对增程器中的发动机和发电机进行控制以使发动机启动，并控制发动机在不同工况下运行，达到了增程器检测维修的目的，例如可以对增程器中的发动机进行检测维修，有效降低了对增程器进行检修维护的难度，而且采用上述方式判断增程器是否进入维护控制模式，可以避免因用户误操作而使增程器误入维护控制模式，有利于保证车辆的安全性。
另外，根据本发明上述电动汽车中增程器的维护控制方法还可以具有如下附加的技术特征：
在本发明的一个实施例中，根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器进入维护控制模式，包括：判断所述电动汽车的油门踏板开度是否大于等于第一预设值且持续第一预设时间；如果判断所述电动汽车的油门踏板开度大于等于所述第一预设值且持续所述第一预设时间，控制所述电动汽车的油门踏板开度保持大于等于所述第一预设值，并进一步判断所述电动汽车的制动踏板是否在第二预设时间内连续被触发预设次数；如果进一步判断所述电动汽车的制动踏板在所述第二预设时间内连续被触发所述预设次数，则在所述制动踏板保持当前状态且持续第三预设时间后控制所述油门踏板松开，以使所述增程器进入维护控制模式。
在本发明的一个实施例中，控制所述发动机在不同工况下运行，包括：通过控制所述电动汽车的油门踏板以控制所述发动机在怠速工况与加速工况之间切换运行，其中，在所述发动机运行在所述加速工况时，所述发动机的转速小于等于预设的极限转速。
在本发明的一个实施例中，当所述电动汽车满足以下任一条件时，控制所述增程器退出所述维护控制模式：
(1)所述电动汽车的当前档位发生变化；
(2)所述电动汽车的整车模式发生变化；
(3)所述电动汽车的整车下电；
(4)所述制动踏板被触发且持续第四预设时间。
在本发明的一个实施例中，在所述发动机启动后，还关闭所述发电机和所述电动汽车的驱动电机的动力输出。
为实现上述目的，本发明第二方面实施例提出了一种电动汽车中增程器的维护控制系统，包括：发电机控制器，所述发电机控制器与所述增程器中的发电机相连以对所述发电机进行控制；发动机控制器，所述发动机控制器与所述增程器中的发动机相连以对所述发动机进行控制，其中，所述发动机与所述发电机相连；增程器控制器，所述增程器控制器分别与所述发电机控制器和所述发动机控制器相连；整车控制器，所述整车控制器与所述增程器控制器相连，所述整车控制器用于获取电动汽车的机舱盖状态和所述电动汽车的当前档位，并获取所述电动汽车的油门踏板信息和制动踏板信息，以及在所述电动汽车的机 舱盖处于打开状态且所述电动汽车的当前档位为空挡时所述整车控制器根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器是否需要进入维护控制模式，并在所述增程器需要进入维护控制模式时向所述增程器控制器发送维护控制模式进入指令，所述增程器控制器根据所述维护控制模式进入指令通过所述发动机控制器对所述发动机进行控制和通过所述发电机控制器对所述发电机进行控制以使所述发动机启动，并通过所述发动机控制器控制所述发动机在不同工况下运行。
根据本发明实施例的电动汽车中增程器的维护控制系统，整车控制器获取电动汽车的机舱盖状态和电动汽车的当前档位，并获取电动汽车的油门踏板信息和制动踏板信息，以及在电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡时整车控制器根据电动汽车的油门踏板信息和制动踏板信息判断增程器是否需要进入维护控制模式，并在增程器需要进入维护控制模式时向增程器控制器发送维护控制模式进入指令，增程器控制器根据维护控制模式进入指令通过发动机控制器对发动机进行控制和通过发电机控制器对发电机进行控制以使发动机启动，并通过发动机控制器控制发动机在不同工况下运行，达到了增程器检测维修的目的，例如可以对增程器中的发动机进行检测维修，有效降低了对增程器进行检修维护的难度，而且采用上述方式判断增程器是否进入维护控制模式，可以避免因用户误操作而使增程器误入维护控制模式，有利于保证车辆的安全性。
上述电动汽车中增程器的维护控制系统还可以具有如下附加的技术特征：
在本发明的一个实施例中，所述整车控制器根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器是否需要进入维护控制模式时，其中，所述整车控制器判断所述电动汽车的油门踏板开度是否大于等于第一预设值且持续第一预设时间；如果判断所述电动汽车的油门踏板开度大于等于所述第一预设值且持续所述第一预设时间，并在所述电动汽车的油门踏板开度保持大于等于所述第一预设值时，所述整车控制器进一步判断所述电动汽车的制动踏板是否在第二预设时间内连续被触发预设次数；如果进一步判断所述电动汽车的制动踏板在所述第二预设时间内连续被触发所述预设次数，并在所述制动踏板保持当前状态且持续第三预设时间后所述油门踏板松开，所述整车控制器判断所述增程器需要进入维护控制模式。
在本发明的一个实施例中，在所述发动机启动后，所述发动机控制器根据接收到的油门踏板控制信号以控制所述发动机在怠速工况与加速工况之间切换运行，其中，在所述发动机运行在所述加速工况时，所述发动机的转速小于等于预设的极限转速。
在本发明的一个实施例中，当所述电动汽车满足以下任一条件时，所述整车控制器判断需要控制所述增程器退出所述维护控制模式：
(1)所述电动汽车的当前档位发生变化；
(2)所述电动汽车的整车模式发生变化；
(3)所述电动汽车的整车下电；
(4)所述制动踏板被触发且持续第四预设时间。
在本发明的一个实施例中，在所述发动机启动后，所述整车控制器还通过所述发电机控制器关闭所述发电机的动力输出和通过所述电动汽车中的电机控制器关闭驱动电机的动力输出。
在本发明的一个实施例中，所述增程器控制器集成设置在所述整车控制器中。
为了实现上述目的，本发明第三方面实施例提出了一种电动汽车包括：本发明第二方面实施例的电动汽车中增程器的维护控制系统。
本发明实施例的电动汽车，通过上述的增程器的维护控制系统，达到了增程器检测维修的目的，例如可以对增程器中的发动机进行检测维修，有效降低了对增程器进行检修维护的难度，而且采用上述方式判断增程器是否进入维护控制模式，可以避免因用户误操作而使增程器误入维护控制模式，有利于保证车辆的安全性。
本发明附加的方面的优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
图1是根据本发明一个实施例的电动汽车中增程器的维护控制方法的流程图。
图2是根据本发明一个实施例的判断增程器进入维护控制模式的流程图。
图3是根据本发明另一个实施例的电动汽车中增程器的维护控制方法的流程图。
图4是根据本发明一个实施例的电动汽车中增程器的维护控制系统的方框示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面参照附图来描述根据本发明实施例提出的电动汽车及电动汽车中增程器的维护控制方法和系统。
图1是根据本发明一个实施例的电动汽车中增程器的维护控制方法的流程图。
如图1所示，该电动汽车中增程器的维护控制方法包括以下步骤：
S1，获取电动汽车的机舱盖状态和电动汽车的当前档位，并获取电动汽车的油门踏板信息和制动踏板信息。
在本发明的实施例中，电动汽车中可具有机舱盖传感器、档位传感器、油门踏板传感器和制动踏板传感器。具体地，可通过机舱盖传感器获取电动汽车的机舱盖状态，可通过档位传感器获取电动汽车的当前档位，可通过油门踏板传感器获取电动汽车的油门踏板信息，以及可通过制动踏板传感器获取电动汽车的制动踏板信息。
S2，当电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡时，根据电动汽车的油门踏板信息和制动踏板信息判断增程器是否进入维护控制模式。
在本发明的一个实施例中，如图2所示，根据电动汽车的油门踏板信息和制动踏板信息判断增程器进入维护控制模式，可包括以下步骤：
S21，判断电动汽车的油门踏板开度是否大于等于第一预设值且持续第一预设时间。其中，第一预设值和第一预设时间可以根据实际情况进行标定，例如，第一预设值可以是80％，第一预设时间可以是60s。
S22，如果判断电动汽车的油门踏板开度大于等于第一预设值且持续第一预设时间，控制电动汽车的油门踏板开度保持大于等于第一预设值，并进一步判断电动汽车的制动踏板是否在第二预设时间内连续被触发预设次数。其中，第二预设时间和预设次数可以根据实际情况进行标定，例如，第二预设时间可以是20s，预设次数可以为3次。
S23，如果进一步判断电动汽车的制动踏板在第二预设时间内连续被触发预设次数，则在制动踏板保持当前状态且持续第三预设时间后控制油门踏板松开，以使增程器进入维护控制模式。其中，第三预设时间可以根据实际情况进行标定，例如，第三预设时间可以为10s。
具体地，在整车上电后，整车控制器对车辆的当前状态进行检测。首先，整车控制器检测电动汽车的机舱盖状态和电动汽车的当前档位，当电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡(N档)时，整车控制器进一步根据电动汽车的油门踏板信息和制动踏板信息判断增程器是否进入维护控制模式。其中，当用户踩下油门踏板以使油门踏板开度在80％以上，且持续60s时，用户继续保持油门踏板开度大于等于80％，并在20s内连续踩下制动踏板3次，保持10s后，继续保持制动踏板被踩下，同时松开油门踏板，即可使得车辆进入维护控制模式。
为使本领域技术人员更清楚地了解本发明，图3是根据本发明一个具体示例的电动汽车中增程器的维护控制方法的流程图。如图3所示，电动汽车中增程器的维护控制过程可包括以下步骤：
S101，整车上电。
S102，判断电动汽车的机舱盖是否处于打开状态。如果是，执行步骤S103；如果否，返回步骤S102。
S103，判断电动汽车的当前档位是否处于空挡。如果是，执行步骤S104；如果否，返回步骤S102。
S104，判断电动汽车的油门踏板开度是否大于或等于80％。如果是，执行步骤S105；如果否，返回步骤S102。
S105，判断电动汽车的油门踏板开度大于或等于80％且持续60s。如果是，执行步骤S106；如果否，返回步骤S102。
S106，电动汽车的油门踏板开度保持大于或等于80％。
S107，判断电动汽车的制动踏板是否被触发。如果是，执行步骤S108；如果否，返回步骤S102。
S108，判断电动汽车的制动踏板在20s内连续被触发3次。如果是，执行步骤S109；如果否，返回步骤S102。
S109，电动汽车的制动踏板保持当前状态且持续10s。
S110，判断电动汽车的油门踏板是否被松开。如果是，执行步骤S111；如果否，返回步骤S102。
S111，增程器进入维护控制模式。
需要说明的是，在本发明的实施例中，可以通过诊断仪与车辆进行配合来触发车辆进入维护控制模式，或者利用维护程序控制车辆进入维护控制模式。另外，还可以根据实际情况对车辆进入维护控制模式的条件进行配置，只要能够避免用户误操作而激活该模式即可，保证车辆的安全性，具体这里不再详述。
S3，如果增程器进入维护控制模式，则通过对增程器中的发动机和发电机进行控制以使发动机启动，并控制发动机在不同工况下运行。
其中，在发动机启动之后，还可关闭发电机和电动汽车的驱动电机的动力输出。
在本发明的一个实施例中，控制发动机在不同工况下运行，可包括通过控制电动汽车的油门踏板以控制发动机在怠速工况与加速工况之间切换运行，其中，在发动机运行在加速工况时，发动机的转速小于等于预设的极限转速。预设的极限转速可以根据实际情况进行标定。
具体地，在增程器进入维护控制模式之后，发动机可以像传统燃油汽车的发动机一样受到维修人员的控制(即，传统汽车怠速模式的控制方法)，当用户控制电动汽车的油门踏板时，整车控制器接收到油门踏板的信息并转发至发动机控制器，而后发动机控制器根据该信息生成相应的控制信号，以控制发动机在怠速工况与加速工况之间切换运行，从而在发动机控制器无油门踏板硬线信号接入的情况下实现了用户对发动机的怠速控制，有效降低了对增程器进行检修维护的难度。
进一步地，在本发明的实施例中，电动汽车的油门踏板信号不直接接入发动机控制器，发动机正常工作时由整车控制器提供目标扭矩给发动机控制器，以控制发动机的运行，而在增程器进入维护控制模式之后，电动汽车的油门踏板信号由整车控制器转发至发动机控制器进行怠速控制，并且发动机的启动沿用增程器正常工作时的启动方法。
需要理解的是，该实例中所说的传统燃油汽车的油门踏板是连接到发动机控制器，发动机控制器直接解析油门踏板的信息，并生成相应的控制信号以控制发动机的运转，而上述电动汽车的油门踏板则是直接连接到整车控制器的，由整车控制器解析油门踏板的信息。
例如，维护人员在检修电动汽车的增程器时，可以通过控制电动汽车的油门踏板的踩入深度，以向发动机控制器发送控制指令控制增程器中的发动机在怠速工况与加速工况之间切换运行，以便维护人员进行相应的检测和维护。由此，方便维护人员对电动汽车的增程器进行检测和维护。
根据本发明的一个实施例，在增程器进入维护控制模式之后，如果电动汽车满足，当前档位发生变化、整车模式发生变化、整车下电和制动踏板被触发且持续第四预设时间等等中的一种或多种条件时，控制增程器退出维护控制模式。其中，第四预设时间可以根据实际情况进行标定，例如第四预设时间为10s。
需要说明的是，在本发明的实施例中，可以通过诊断仪与车辆进行配合来触发车辆退出维护控制模式，或者利用维护程序控制车辆退出维护控制模式。另外，还可以根据实际情况对车辆退出维护控制模式的条件进行具体的配置。这里不再详述。
根据本发明实施例的电动汽车中增程器的维护控制方法，首先获取电动汽车的机舱盖状态和电动汽车的当前档位，并获取电动汽车的油门踏板信息和制动踏板信息，而后当电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡时，根据电动汽车的油门踏板信息和制动踏板信息判断增程器是否进入维护控制模式，如果增程器进入维护控制模式，则通过对增程器中的发动机和发电机进行控制以使发动机启动，并控制发动机在不同工况下运行，达到了增程器检测维修的目的，例如可以对增程器中的发动机进行检测维修，有效降低了对增程器进行检修维护的难度，而且采用上述方式判断增程器是否进入维护控制模式，可以避免因用户误操作而使增程器误入维护控制模式，有利于保证车辆的安全性。
图4是根据本发明一个实施例的电动汽车中增程器的维护控制系统的方框示意图。
如图4所示，该电动汽车中增程器的维护控制系统包括：发电机控制器100、发动机控制器200、增程器控制器300和整车控制器400。
具体地，发电机控制器100与增程器500中的发电机510相连以对发电机510进行控制。发动机控制器200与增程器500中的发动机520相连以对发动机520进行控制，其中，发动机520与发电机510相连。增程器控制器300分别与发电机控制器100和发动机控制 器200相连。整车控制器400与增程器控制器300相连，整车控制器400用于获取电动汽车的机舱盖状态和电动汽车的当前档位，并获取电动汽车的油门踏板信息和制动踏板信息，以及在电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡时整车控制器400根据电动汽车的油门踏板信息和制动踏板信息判断增程器500是否需要进入维护控制模式，并在增程器500需要进入维护控制模式时向增程器控制器300发送维护控制模式进入指令，增程器控制器300根据维护控制模式进入指令通过发动机控制器200对发动机520进行控制和通过发电机控制器100对发电机510进行控制以使发动机520启动，并通过发动机控制器200控制发动机520在不同工况下运行。其中，在发动机520启动后，整车控制器400还通过发电机控制器100关闭发电机520的动力输出和通过电动汽车中的电机控制器关闭驱动电机的动力输出。
在本发明的实施例中，电动汽车中可具有机舱盖传感器、档位传感器、油门踏板传感器和制动踏板传感器。具体地，可通过机舱盖传感器获取电动汽车的机舱盖状态，可通过档位传感器获取电动汽车的当前档位，可通过油门踏板传感器获取电动汽车的油门踏板信息，以及可通过制动踏板传感器获取电动汽车的制动踏板信息。
在本发明的一个实施例中，整车控制器400根据电动汽车的油门踏板信息和制动踏板信息判断增程器500是否需要进入维护控制模式时，其中，整车控制器400判断电动汽车的油门踏板开度是否大于等于第一预设值且持续第一预设时间；如果判断电动汽车的油门踏板开度大于等于第一预设值且持续第一预设时间，并在电动汽车的油门踏板开度保持大于等于第一预设值时，整车控制器400进一步判断电动汽车的制动踏板是否在第二预设时间内连续被触发预设次数；如果进一步判断电动汽车的制动踏板在第二预设时间内连续被触发预设次数，并在制动踏板保持当前状态且持续第三预设时间后油门踏板松开，整车控制器400判断增程器500需要进入维护控制模式。其中，第一预设值、第一预设时间、第二预设时间、预设次数和第三预设时间均可以根据实际情况进行标定，例如,第一预设值可以是80％，第一预设时间可以是60s,第二预设时间可以是20s，预设次数可以为3次,第三预设时间可以为10s。
具体地，在整车上电后，整车控制器400对车辆的当前状态进行检测。首先，整车控制器400检测电动汽车的机舱盖状态和电动汽车的当前档位，当电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡(N档)时，整车控制器400进一步根据电动汽车的油门踏板信息和制动踏板信息判断增程器500是否进入维护控制模式。其中，当用户踩下油门踏板以使油门踏板开度在80％以上，且持续60s时，用户继续保持油门踏板开度大于等于80％，并在20s内连续踩下制动踏板3次，保持10s后，继续保持制动踏板被踩下，同时松开油门踏板，即可使得车辆进入维护控制模式。为使本领域技术人员更清楚地了解 本发明，电动汽车中增程器的维护控制过程如图3所示。
需要说明的是，在本发明的实施例中，可以通过诊断仪与车辆进行配合来触发车辆进入维护控制模式，或者利用维护程序控制车辆进入维护控制模式。另外，还可以根据实际情况对车辆进入维护控制模式的条件进行配置，只要能够避免用户误操作而激活该模式即可，保证车辆的安全性，具体这里不再详述。
在本发明的一个实施例中，在发动机520启动后，发动机控制器200根据接收到的油门踏板控制信号以控制发动机520在怠速工况与加速工况之间切换运行，其中，在发动机520运行在加速工况时，发动机的转速小于等于预设的极限转速。预设的极限转速可以根据实际情况进行标定。
具体地，在增程器500进入维护控制模式之后，发动机520可以像传统燃油汽车的发动机一样受到维修人员的控制(即，传统汽车怠速模式的控制方法)，当用户控制电动汽车的油门踏板时，整车控制器400接收到油门踏板的信息并转发至发动机控制器200，而后发动机控制器200根据该信息生成相应的控制信号，以控制发动机520在怠速工况与加速工况之间切换运行，从而在发动机控制器200无油门踏板硬线信号接入的情况下实现了用户对发动机520的怠速控制，有效降低了对增程器500进行检修维护的难度。
进一步地，在本发明的实施例中，电动汽车的油门踏板信号不直接接入发动机控制器，发动机正常工作时由整车控制器400提供目标扭矩给发动机控制器，以控制发动机的运行，而在增程器500进入维护控制模式之后，电动汽车的油门踏板信号由整车控制器400转发至发动机控制器200进行怠速控制，并且发动机520的启动沿用增程器500正常工作时的启动方法。
需要理解的是，该实例中所说的传统燃油汽车的油门踏板是连接到发动机控制器，发动机控制器直接解析油门踏板的信息，并生成相应的控制信号以控制发动机的运转，而上述电动汽车的油门踏板则是直接连接到整车控制器的，由整车控制器解析油门踏板的信息。
例如，维护人员在检修电动汽车的增程器500时，可以通过控制电动汽车的油门踏板的踩入深度，来控制增程器500中的发动机520在怠速工况与加速工况之间切换运行，以便维护人员进行相应的检测和维护。由此，方便维护人员对电动汽车的增程器500进行检测和维护。
根据本发明的一个实施例，在增程器500进入维护控制模式之后，如果电动汽车满足，当前档位发生变化、整车模式发生变化、整车下电和制动踏板被触发且持续第四预设时间等等中的一种或多种条件时，整车控制器400控制增程器500退出维护控制模式。其中，第四预设时间可以根据实际情况进行标定，例如第四预设时间为10s。
需要说明的是，在本发明的实施例中，可以通过诊断仪与车辆进行配合来触发车辆退 出维护控制模式，或者利用维护程序控制车辆退出维护控制模式。另外，还可以根据实际情况对车辆退出维护控制模式的条件进行具体的配置。这里不再详述。
根据本发明实施例的电动汽车中增程器的维护控制系统，整车控制器获取电动汽车的机舱盖状态和电动汽车的当前档位，并获取电动汽车的油门踏板信息和制动踏板信息，以及在电动汽车的机舱盖处于打开状态且电动汽车的当前档位为空挡时整车控制器根据电动汽车的油门踏板信息和制动踏板信息判断增程器是否需要进入维护控制模式，并在增程器需要进入维护控制模式时向增程器控制器发送维护控制模式进入指令，增程器控制器根据维护控制模式进入指令通过发动机控制器对发动机进行控制和通过发电机控制器对发电机进行控制以使发动机启动，并通过发动机控制器控制发动机在不同工况下运行，达到了增程器检测维修的目的，例如可以对增程器中的发动机进行检测维修，有效降低了对增程器进行检修维护的难度，而且采用上述方式判断增程器是否进入维护控制模式，可以避免因用户误操作而使增程器误入维护控制模式，有利于保证车辆的安全性。
本发明实施例的电动汽车包括本发明上述任一实施例的电动汽车中增程器的维护控制系统。
本发明实施例的电动汽车，通过上述的增程器的维护控制系统，达到了增程器检测维修的目的，例如可以对增程器中的发动机进行检测维修，有效降低了对增程器进行检修维护的难度，而且采用上述方式判断增程器是否进入维护控制模式，可以避免因用户误操作而使增程器误入维护控制模式，有利于保证车辆的安全性。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通 技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (12)

  1. 一种电动汽车中增程器的维护控制方法，其特征在于，包括以下步骤：
    获取电动汽车的机舱盖状态和所述电动汽车的当前档位，并获取所述电动汽车的油门踏板信息和制动踏板信息；
    当所述电动汽车的机舱盖处于打开状态且所述电动汽车的当前档位为空挡时，根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器是否进入维护控制模式；
    如果所述增程器进入维护控制模式，则通过对所述增程器中的发动机和发电机进行控制以使所述发动机启动，并控制所述发动机在不同工况下运行。
  2. 如权利要求1所述的电动汽车中增程器的维护控制方法，其特征在于，根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器进入维护控制模式，包括：
    判断所述电动汽车的油门踏板开度是否大于等于第一预设值且持续第一预设时间；
    如果判断所述电动汽车的油门踏板开度大于等于所述第一预设值且持续所述第一预设时间，控制所述电动汽车的油门踏板开度保持大于等于所述第一预设值，并进一步判断所述电动汽车的制动踏板是否在第二预设时间内连续被触发预设次数；
    如果进一步判断所述电动汽车的制动踏板在所述第二预设时间内连续被触发所述预设次数，则在所述制动踏板保持当前状态且持续第三预设时间后控制所述油门踏板松开，以使所述增程器进入维护控制模式。
  3. 如权利要求1或2所述的电动汽车中增程器的维护控制方法，其特征在于，控制所述发动机在不同工况下运行，包括：
    通过控制所述电动汽车的油门踏板以控制所述发动机在怠速工况与加速工况之间切换运行，其中，在所述发动机运行在所述加速工况时，所述发动机的转速小于等于预设的极限转速。
  4. 如权利要求1所述的电动汽车中增程器的维护控制方法，其特征在于，当所述电动汽车满足以下任一条件时，控制所述增程器退出所述维护控制模式：
    (1)所述电动汽车的当前档位发生变化；
    (2)所述电动汽车的整车模式发生变化；
    (3)所述电动汽车的整车下电；
    (4)所述制动踏板被触发且持续第四预设时间。
  5. 如权利要求1所述的电动汽车中增程器的维护控制方法，其特征在于，在所述发动机启动后，还关闭所述发电机和所述电动汽车的驱动电机的动力输出。
  6. 一种电动汽车中增程器的维护控制系统，其特征在于，包括：
    发电机控制器，所述发电机控制器与所述增程器中的发电机相连以对所述发电机进行控制；
    发动机控制器，所述发动机控制器与所述增程器中的发动机相连以对所述发动机进行控制，其中，所述发动机与所述发电机相连；
    增程器控制器，所述增程器控制器分别与所述发电机控制器和所述发动机控制器相连；
    整车控制器，所述整车控制器与所述增程器控制器相连，所述整车控制器用于获取电动汽车的机舱盖状态和所述电动汽车的当前档位，并获取所述电动汽车的油门踏板信息和制动踏板信息，以及在所述电动汽车的机舱盖处于打开状态且所述电动汽车的当前档位为空挡时所述整车控制器根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器是否需要进入维护控制模式，并在所述增程器需要进入维护控制模式时向所述增程器控制器发送维护控制模式进入指令，所述增程器控制器根据所述维护控制模式进入指令通过所述发动机控制器对所述发动机进行控制和通过所述发电机控制器对所述发电机进行控制以使所述发动机启动，并通过所述发动机控制器控制所述发动机在不同工况下运行。
  7. 如权利要求6所述的电动汽车中增程器的维护控制系统，其特征在于，所述整车控制器根据所述电动汽车的油门踏板信息和制动踏板信息判断所述增程器是否需要进入维护控制模式时，其中，
    所述整车控制器判断所述电动汽车的油门踏板开度是否大于等于第一预设值且持续第一预设时间；
    如果判断所述电动汽车的油门踏板开度大于等于所述第一预设值且持续所述第一预设时间，并在所述电动汽车的油门踏板开度保持大于等于所述第一预设值时，所述整车控制器进一步判断所述电动汽车的制动踏板是否在第二预设时间内连续被触发预设次数；
    如果进一步判断所述电动汽车的制动踏板在所述第二预设时间内连续被触发所述预设次数，并在所述制动踏板保持当前状态且持续第三预设时间后所述油门踏板松开，所述整车控制器判断所述增程器需要进入维护控制模式。
  8. 如权利要求6或7所述的电动汽车中增程器的维护控制系统，其特征在于，在所述发动机启动后，所述发动机控制器根据接收到的油门踏板控制信号以控制所述发动机在怠速工况与加速工况之间切换运行，其中，在所述发动机运行在所述加速工况时，所述发动机的转速小于等于预设的极限转速。
  9. 如权利要求6所述的电动汽车中增程器的维护控制系统，其特征在于，当所述电动汽车满足以下任一条件时，所述整车控制器判断需要控制所述增程器退出所述维护控制模式：
    (1)所述电动汽车的当前档位发生变化；
    (2)所述电动汽车的整车模式发生变化；
    (3)所述电动汽车的整车下电；
    (4)所述制动踏板被触发且持续第四预设时间。
  10. 如权利要求6所述的电动汽车中增程器的维护控制系统，其特征在于，在所述发动机启动后，所述整车控制器还通过所述发电机控制器关闭所述发电机的动力输出和通过所述电动汽车中的电机控制器关闭驱动电机的动力输出。
  11. 如权利要求6-10中任一项所述的电动汽车中增程器的维护控制系统，其特征在于，所述增程器控制器集成设置在所述整车控制器中。
  12. 一种电动汽车，其特征在于，包括如权利要求6-11中任一项所述的电动汽车中增程器的维护控制系统。
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