Control system and control method of hybrid electric vehicle
First Claim
1. A control system for a hybrid electric vehicle, comprising:
- a transmission system configured to drive wheels of the hybrid electric vehicle;
an engine power subsystem connected to the transmission system;
a motor power subsystem connected to the transmission system; and
a control module,wherein when electrical power of the vehicle is on, the control module is configured to control the hybrid electric vehicle to operate in corresponding operating modes by controlling the engine power subsystem and the motor power subsystem, wherein the operating mode comprises HEV-eco mode and HEV-s mode,wherein;
(1) when the hybrid electric vehicle operates in HEV-eco and the hybrid electric vehicle operates at low power, or when the hybrid electric vehicle operates in HEV-s mode; and
(2) the vehicle speed is zero,the control module is further configured to control the hybrid electric vehicle to operate by idle start-stop strategy;
wherein when the hybrid electric vehicle operates in the HEV-eco mode,under the conditions that a road slope is below a lower limit of slope, electric quantity of a power battery is below a lower limit of the electric quantity, orunder the conditions that the road slope is below the lower limit of the slope and a maximum allowable discharge power of the power battery is below a lower limit of the power,the control module is configured to control the hybrid electric vehicle to operate in a low power mode.
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Accused Products
Abstract
A control system for a hybrid electric vehicle comprises a transmission system configured to drive wheels, an engine power subsystem connected to the transmission system, a motor power subsystem connected to the transmission system and a control module. When vehicle'"'"'s electrical power is on, the control module is configured to control operating mode of the hybrid electric vehicle through the engine power subsystem and the motor power subsystem. The operating mode comprises HEV-eco mode and HEV-s mode. When the hybrid electric vehicle operates in HEV-eco and the hybrid electric vehicle operates at low power or when the hybrid electric vehicle operates in HEV-s mode and when the vehicle speed is zero, the control module enables the hybrid electric vehicle to operate by idle start-stop strategy.
84 Citations
6 Claims
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1. A control system for a hybrid electric vehicle, comprising:
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a transmission system configured to drive wheels of the hybrid electric vehicle; an engine power subsystem connected to the transmission system; a motor power subsystem connected to the transmission system; and a control module, wherein when electrical power of the vehicle is on, the control module is configured to control the hybrid electric vehicle to operate in corresponding operating modes by controlling the engine power subsystem and the motor power subsystem, wherein the operating mode comprises HEV-eco mode and HEV-s mode, wherein; (1) when the hybrid electric vehicle operates in HEV-eco and the hybrid electric vehicle operates at low power, or when the hybrid electric vehicle operates in HEV-s mode; and (2) the vehicle speed is zero, the control module is further configured to control the hybrid electric vehicle to operate by idle start-stop strategy; wherein when the hybrid electric vehicle operates in the HEV-eco mode, under the conditions that a road slope is below a lower limit of slope, electric quantity of a power battery is below a lower limit of the electric quantity, or under the conditions that the road slope is below the lower limit of the slope and a maximum allowable discharge power of the power battery is below a lower limit of the power, the control module is configured to control the hybrid electric vehicle to operate in a low power mode. - View Dependent Claims (2, 3)
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4. A method of controlling a hybrid electric vehicle, the method comprising:
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detecting that the hybrid electric vehicle'"'"'s electric power is on; enabling, by a control module, the hybrid electric vehicle to enter into an operating mode through an engine power subsystem and a motor power subsystem in an instance; detecting that the hybrid electric vehicle operates in a HEV-eco mode; detecting that; (1) a road slope is lower than or equal to a lower limit of slope, and an electric quantity of a power battery is lower than or equal to a lower limit of the electric quantity of the power battery of the motor power subsystem;
or(2) the road slope is lower than or equal to the lower limit of slope, and a maximum allowable discharge power of the power battery is lower than or equal to a lower limit of the maximum allowable discharge power; determining that the hybrid electric vehicle operates in a low power strategy; detecting that a hybrid electric vehicle speed is zero; and enabling, by the control module, the hybrid electric vehicle to operate by idle start-stop strategy. - View Dependent Claims (5, 6)
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Specification