Testing method for measuring efficiency of electric drive system of new energy automobile

Abstract

The invention discloses a testing method for measuring efficiency of an electric drive system of a new energy automobile. The testing method comprises the following steps: hanging an electric driver, to be tested, of the new energy automobile on a connecting frame of a truss of a testing platform; exerting pressure on a left jack and a right jack respectively; recording corresponding data automatically and printing a testing report through a computer. A control system provided by the invention adopts bilateral control technology to recycle braking regenerative energy, and can keep higher power factor and efficiency within the range of rated load of 25% to 120%, so that energy-saving effect is more obvious during light-load operation and electrical energy can be saved greatly during long-term use.

Description

technical field [0001] The invention specifically relates to a test method for measuring the efficiency of an electric drive system of a new energy vehicle. Background technique [0002] For an engine-driven car, the drive system relies on the power provided by the engine, and the power is transmitted to the wheels through the transmission, differential and half shafts. At present, most cars are driven by the front wheels, and the front wheels have a set of mechanical manipulation structures to make the front wheels produce a certain angle of rotation to achieve steering. However, such a system is due to the steering and driving of the front wheels, so the structure of the entire mechanical system is very complicated. At the same time, in today's increasingly severe energy environment, the range of use of traditional engines will be more and more limited, and people are looking for a cleaner, more environmentally friendly new energy source, so electric vehicles are getting m...

AI Technical Summary

Problems solved by technology

Like conventional power vehicles, electric vehicles driven by a single motor only use one motor horizontally, and the power is transmitted to the wheels on both sides through the reducer differential. However, due to the high maximum power and maximum torque of the motor, poor heat dissipation and performance Problems such as instability and high cost make electric vehicles expensive and limited in scope of use

[0003] The existing technology has the following problems: For vehicles with high power requirements, vehicles driven independently by dual motors have higher requirements on the conditions of the motors on both sides, which greatly increases the production cost

4. The hub motor of the hub motor drives the car. The hub motor has disadvantages: the hub motor itself is heavy, the fault is high, and the maintenance is inconvenient. The hub must be disassembled before maintenance. The electronic components in the motor are easily damaged. , especially the waterproof protection at the bearing hole is more difficult, and the cost of the hub motor is higher, etc.