A test system and method for electrical components of a mild hybrid electric vehicle power system

Abstract

The invention discloses a testing system and a method for electric part of power system for weak hybrid electric vehicle, and the system comprises a BSG motor module provided with a BSG motor and a BSG motor controller; a dynamometer module provided with a dynamometer, a measuring and control instrument and a torque and speed sensor, and a transducer or an inverter; a power module provided with a power storage battery, a battery management system, a program control power supply and a program control power supply controller; an auxiliary electric system load simulation module provided with a DC / DC convertor and an auxiliary electric system load; an upper computer module. The method adopts the half object simulation principle, the dynamometer simulates the engine for doing test to the BSG motor module and does the service life test for the electric part of weak hybrid power system at different working conditions that the BSG motor starts the engine, the engine drives the BSG motor for generating, regenerative braking, idle parking while the battery drives the load, the system and method can reduce the test cost, shorten the test period for vehicle performance and raise the developing speed for product.

Description

technical field [0001] The invention belongs to the technical field of testing and testing of weak hybrid electric vehicles, and in particular relates to a testing system and method for electrical components of a power system of a weak hybrid electric vehicle. Background technique [0002] The biggest difference between a weak hybrid vehicle and a traditional fuel vehicle is that when the vehicle meets the shutdown conditions, the engine will cut off the oil and stop, and when the accelerator pedal is stepped on again, the BSG motor or intelligent start-stop motor will automatically start the engine, thereby reducing the vehicle's energy consumption. The fuel consumption and emission in the idling stage can be improved, the starting performance of the engine can be improved, and the purpose of energy saving and environmental protection can be achieved. Therefore, compared with the research and development of traditional vehicles, the research and development and testing of w...

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Problems solved by technology

However, the control system of the hydraulic loading mechanism is complex, the control precision of the hydraulic system is limited, and the resistance torque response is not sensitive. Therefore, this invention is suitable for using two sets of systems to simulate the power generation and electric working conditions of the BSG motor system respectively, but for a set of BSG motor system , it is difficult to realize the cyclic conversion between electric starting and regenerative power generation

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