Range extender starting control method and device

A control method and technology of a control device, which are applied in the direction of control device, control drive, motor vehicle, etc., can solve the problems of driver not knowing the starting situation, engine damage, and high post-processing temperature, so as to improve the success rate of starting and avoid false alarms. , Reasonable design effect

Active Publication Date: 2018-05-18
ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One is that when the range extender of an extended-range electric vehicle starts is controlled by the VCU of the vehicle control system, the driver does not know the start-up situation, and cannot realize manual control like the engine start of a traditional car; In the case of long-term dragging will cause damage to the engine, and even cause high after-treatment temperature

Method used

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  • Range extender starting control method and device
  • Range extender starting control method and device
  • Range extender starting control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] figure 1 It is a flow chart of a range extender startup control method provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the present invention provides a method for controlling the start of a range extender, comprising the following steps:

[0062] S101: In response to an instruction from the vehicle controller, check the starting state of the range extender;

[0063] Specifically, the checking of the starting state of the range extender includes checking the speed and torque of the engine, and the mode, speed and torque of the generator;

[0064] figure 2 It is a comparative schematic diagram of the torque and speed of the generator provided by Embodiment 1 of the present invention under the driving state and the braking state, as shown in figure 2 As shown, the torque output by the generator in the braking state is a counterclockwise torque, and the torque output by the generator in a driving state is a clockwise torque.

[0065] ...

Embodiment 2

[0085] This embodiment is a further optimization on the basis of embodiment 1, image 3 It is a flow chart of a range extender activation control method provided in Embodiment 2 of the present invention, as shown in image 3 As shown, the control method provided in this embodiment may also include:

[0086] S207: If the starting state of the range extender does not meet the starting condition, report the fault information to the vehicle controller.

[0087] Specifically, the starting state of the range extender does not meet the starting conditions including engine overheating.

[0088] S208: Output the fault information.

[0089] Specifically, the fault information includes fault type, fault parameter and fault cause; the fault type includes but not limited to crankshaft signal fault, fixed shaft fault, insufficient water pressure, abnormal intake pressure, etc.;

[0090] Optionally, the fault information is displayed on the instrument panel for notifying the driver of mai...

Embodiment 3

[0093] Figure 4 It is a flow chart of a range extender activation control method provided in Embodiment 3 of the present invention, as shown in Figure 4 As shown, this embodiment provides a method for controlling the start of a range extender, including the following steps:

[0094] S301: In response to an instruction from the vehicle controller, check the starting state of the range extender;

[0095] S302: judging whether the starting state of the range extender satisfies the starting condition;

[0096] S303: If the starting state of the range extender satisfies the start condition, then initialize the range extender;

[0097] Optionally, a long-time power-off of the range extender can clear the fault data and play an initialization role, thereby avoiding false alarms when reporting fault information to the vehicle controller.

[0098] S304: Control the generator to drive the engine to start;

[0099] S305: When the starting time reaches the preset starting time, judg...

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Abstract

The invention discloses a range extender starting control method and further discloses a range extender starting control device. The range extender starting control method comprises the steps that aninstruction from a vehicle controller is answered, and the starting state of a range extender is checked; whether the stating state of the range extender meets the stating condition or not is judged;if the starting condition is met, a power generator is controlled to drag an engine to be started; when the starting time reaches a preset starting duration, whether the engine is successfully startedor not is judged; if the engine is not successfully started, the number of starting failure times is recorded, and whether the number of the accumulated failure times is smaller than a preset value or not is judged; if the number of the accumulated failure times is smaller than the preset value, the power generator is controlled to stop dragging the engine, and after waiting is conducted for a first preset duration, the step that the power generator is controlled to drag the engine to be started is returned to; and if the number of the accumulated failure times is not smaller than the presetvalue, breakdown information is transmitted to the vehicle controller. According to the range extender starting control method and device, active control over range extender engine starting is achieved, the starting success rate of the range extender can be increased, and the situation that the engine is dragged for a long time and thus the risk occurs is avoided.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method and device for controlling the start of a range extender. Background technique [0002] Electric vehicles refer to vehicles that use electric energy to drive motors as power systems in whole or in part, including fuel cell electric vehicles, hybrid electric vehicles and pure electric vehicles. Extended-range electric vehicles are hybrid vehicles with a series structure. The power source of its driving device is a power battery and a range extender. [0003] The working principle of the range-extended electric vehicle is as follows: when the battery power is sufficient, the power battery drives the motor to provide the driving power demand of the whole vehicle. At this time, the engine of the range extender does not participate in the work; The engine of the range extender starts to provide energy for the battery to charge the power battery; when the battery is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20B60L11/12B60L50/15
CPCB60L15/20B60L2240/421B60L2240/423B60L2240/441B60L2240/443B60L2240/54B60L50/61Y02T10/62Y02T10/70Y02T10/7072Y02T10/72
Inventor 霍元王一戎朱利王开乐
Owner ZHEJIANG GEELY NEW ENERGY COMML VEHICLES CO LTD
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