The invention belongs to the field of
hybrid vehicle control systems, and specifically relates to an electric proportional hydraulic
hybrid device used for a vehicle. The electric proportional hydraulic
hybrid device comprises a
plunger pump, a high-pressure energy accumulator, a low-pressure energy accumulator, a control motor pump set, a
brake sensor, an accelerator sensor, a
pressure sensor, anactive energy accumulation switch and a controller. The
plunger pump is used for converting vehicle
kinetic energy into
potential energy to be stored in the energy accumulators or releasing the
potential energy in the energy accumulators into the
kinetic energy assisting in driving the vehicle. The
plunger pump and the vehicle share a main shaft. The
plunger pump is an electric proportional axial-direction variable-displacement
plunger pump. The control motor pump set is used for controlling the displacement of the
plunger pump. The
brake sensor is used for sensing the position of a
brake. The accelerator sensor is used for sensing the position of an accelerator. The
pressure sensor is used for sensing the
oil pressure in the high-pressure energy accumulator. The active energy accumulation switch is used for actively controlling the displacement of the plunger pump. The controller is used for controlling all the devices mentioned above. Meanwhile, the invention further discloses a control method of the electric proportional hydraulic
hybrid device. Compared with a traditional
hybrid device, by means of the electric proportional hydraulic
hybrid device and the control method, spaceis saved, the
energy recycling effect is good, and the electric proportional hydraulic hybrid device and the control method are worthy of application and popularization.