Hydraulic circuit control device

A hydraulic circuit control device mounted in a drive device of a vehicle comprising:

• wheels;
• a first electric motor that has a coil and a cooling portion and drives the wheels;
• a power transmission device that has a lubricating portion and transmits the drive power of the first electric motor to the wheels;
• and a hydraulic clutch mounted in the power transmission device that performs engagement and disengagement of drive power between the first electric motor and the wheels, the control device comprising:
• a first oil passage that requires a high pressure and is connected to the hydraulic clutch;
• a second oil passage that requires a low pressure and high flow rate and is connected to at least one of the cooling portion and the lubricating portion;
• an oil pump that is driven by a second electric motor and that selectively supplies oil to the first oil passage and the second oil passage;
• an oil passage switching unit adapted to switch the connection of the oil pump to either the first oil passage or the second oil passage;
• a control mode switching unit adapted to switch the control mode of the second electric motor to either a torque control mode or a speed control mode;
• an oil passage selecting unit adapted to select whether to connect the oil pump to either the first oil passage or the second oil passage;
• and
• a control unit adapted to perform control so that the control mode switching unit switches the control mode of the second electric motor to the torque control mode when the oil passage selecting unit has selected the first oil passage, and to perform control so that the control mode switching unit switches the control mode of the second electric motor to the speed control mode when the oil passage selecting unit has selected the second oil passage.