Hybrid electric vehicle coupling mechanism cooling and lubricating device and control method thereof

Abstract

The invention relates to the field of automobiles and discloses a hybrid electric vehicle coupling mechanism cooling and lubricating device and a control method thereof. The control method comprises the following steps a working mode of a coupling mechanism are received; when the coupling mechanism is in a pure-electric mode, an electric pump does not work, a drive motor drives a mechanical pump to operate so as to conduct cooling and lubricating on the drive motor; and when the coupling mechanism is in a stroke increasing mode or a hybrid power mode, the electric pump operates to conduct cooling and lubricating on a generator and a clutch, and meanwhile, the drive motor drives the mechanical pump to operate so as to conduct cooling and lubricating on the drive motor. The hybrid electric vehicle coupling mechanism cooling and lubricating device integrates cooling and lubricating of the coupling mechanism, spatial size of a system and the weight of system components can be reduced, the system adopts the mechanical pump and the electric pump as power sources of lubricating and cooling of oil liquid, switching can be conducted according to the working modes of the coupling mechanism, development cost is reduced, and control difficulty is lowered.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a cooling and lubricating device for a coupling mechanism of a hybrid electric vehicle and a control method thereof. Background technique [0002] With the lack of oil resources, the improvement of people's awareness of environmental protection, and the requirements of increasingly stringent environmental protection regulations, there is an urgent need for green and environmentally friendly automotive products that can save energy and have low emissions or even zero emissions. To this end, governments around the world and major automobile manufacturers are intensifying their efforts to develop various types of new energy vehicles. A hybrid vehicle refers to a vehicle that uses more than two sources of energy compared to a conventional internal combustion engine. [0003] As one of the auxiliary systems, the cooling and lubricating device is one of the main technologies of the whole sy...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a hybrid vehicle coupling mechanism cooling and lubricating device and its control method that can switch the power source according to the working mode of the coupling mechanism, so as to reduce the control difficulty and cost of the existing hybrid vehicle coupling mechanism cooling and lubricating device

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