Hybrid Electric Vehicle and Its Motor Cooling Hydraulic System
A hybrid electric vehicle and motor cooling technology, which is applied to fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc. The problem of low utilization rate of flow output can achieve the effect of improving cooling efficiency, reducing power demand and reducing flow waste.
Active Publication Date: 2018-11-23
GUANGZHOU AUTOMOBILE GROUP CO LTD
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[0013] The purpose of the present invention is to provide a hybrid electric vehicle and its motor cooling hydraulic system. While meeting the basic needs of the gearbox, it can solve the waste of output flow of the oil supply system, the low utilization rate of cooling flow output, and the slow power of oil temperature rise. The problem of large loss
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[0030] In order to further illustrate the technical means and functions adopted by the present invention to achieve the intended invention purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0031] An embodiment of the present invention provides a motor cooling hydraulic system of a hybrid electric vehicle, which is mainly used in an electromechanical coupling gearbox of a hybrid electric vehicle. figure 1 For the schematic diagram of the motor cooling hydraulic system of the hybrid electric vehicle in the embodiment of the present invention, please refer to figure 1 , the hybrid vehicle includes an engine 11 , a first motor 12 , a second motor 13 , a power battery 14 , a clutch 15 and a speed reducer 16 . Wherein, the engine 11 is connected with the clutch 15. When the clutch 15 is combined, the power of the engine 11 can be transmitted to the speed reducer 16 in parallel with the power ou...
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The invention discloses a hybrid electric vehicle and a motor cooling hydraulic system thereof. The motor cooling hydraulic system comprises a mechanical oil pump, an electric oil pump, a pressure control sliding valve, a temperature control reversing valve, a radiator, a flow control valve and a controller. The pressure control sliding valve, the temperature control reversing valve and the flow control valve are connected in series. The pressure control sliding valve is connected with an oil outlet of the mechanical oil pump and an oil outlet of the electric oil pump. The temperature control reversing valve is connected between the pressure control sliding valve and the flow control valve. An oil outlet of the flow control valve is connected with a to-be-cooled motor. The radiator is connected between the pressure control sliding valve and the flow control valve and is connected with the temperature control reversing valve in parallel. The temperature control reversing valve controls whether oil liquid flows through the radiator to be cooled or not according to the oil temperature in the system. The controller is electrically connected with the electric oil pump and controls the rotating speed of the electric oil pump in real time according to the requirement for the cooling flow of the motor. The controller is further electrically connected with the flow control valve and controls the opening degree of a valve opening of the flow control valve in real time according to the requirement for the cooling flow of the motor.
Description
technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a motor cooling hydraulic system of a hybrid electric vehicle. Background technique [0002] A hybrid vehicle is a vehicle that uses more than two sources of energy. A common gasoline-electric hybrid vehicle has an engine and an electric motor, the engine consumes fuel, and the electric motor consumes electric energy from the power battery. [0003] Hydraulic systems are widely used in gearboxes of hybrid electric vehicles. Due to the different structural principles of various hybrid vehicles, the hydraulic system is designed to adapt to the gearbox, so its specific design methods are also different. However, the hydraulic system is generally composed of an oil supply system, a hydraulic control module, a cooling system and other hydraulic accessories. At present, the technical problems that the hydraulic system needs to solve include: [0004] 1) Realize the...
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IPC IPC(8): F15B11/17F15B21/04
Inventor 李超莫宇钊凡则宏林济余
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD