Judge the merits of electric vehicle controller

1, carefully observe the work
 A controller work reflects a strength of the company, under the same conditions, workshop controller certainly not as big company's products; manual welding products and certainly not wave down products; the appearance of fine control is better than not pay attention to the appearance of the product; conductors too thick wire controller is better than jerry controller; radiator radiator light weight controller is better than the controller, etc., has been pursued in terms of materials and technology companies is relatively high credibility, contrast can see that .
2, compared to the temperature rise
The same conditions were sent with the new controller and the controller of the original use of the thermal test under blocking forwards, two controllers are removed the radiator, with a car, feet propped up, first turn to reach the maximum speed of rotation, immediately brakes, brake not dead, so the controller enters the stall protection, for 5 seconds at very low speed, release the brakes quickly reach top speed, and then brakes, repeating the same operation, such as 30, to detect the maximum temperature radiator point.
Take two comparison of the data controller, the temperature as low as possible. Test conditions should ensure that the same limit, the same battery capacity, the same car, the same car from a cold start test, maintain the same braking force and time. End of the trial should check the tightness of the screws fixing the MOS, the more that the use of loose insulating plastic particles temperature worse, in the long run, this will result in MOS advance due to heat damage. Refill the radiator, repeat the test, compared to the heat sink temperature, which can examine the thermal design of the controller.
3, back pressure control was observed
Select a vehicle, power can be bigger, unplug the battery, use of tandem electric bicycle powered charger, connect the E-ABS is enabled terminals to ensure that the brakes switch contact. Slowly turn the switch to, fast charger can not output large current will cause voltage, so that the motor reaches maximum speed, fast brake, repeatedly, should not be damaged MOS phenomenon. When braking, the charger output voltage will rapidly rise, the test controller moment limited pressure capability, this test if the battery test basically no effect.
4, the current control
Take full battery capacity the better, let the motor reaches maximum speed, optional two motor output circuits, repeated more than 30 times, should not be damaged MOS; let the motor reaches maximum speed, battery positive and Optionally a motor line short, repeated 30 times, the test fast controller capacity. Many controller in this part fool, if damaged, can compare two controllers bear the number of successful short-circuit, the less worse. This part of the experiment can be verified controller software, hardware reliability design.
5, the test controller efficiency
Overspeed shutdown function, if any, in a car with no load test different controllers to achieve maximum speed, the higher the speed, the higher the efficiency, the mileage is relatively high. In the above test are no special equipment to conduct, operability, extensive work contrast controller, temperature, voltage and current control and efficiency differences, basically reflect the merits of the controller. Consumers may wish to purchase an electric car when selecting the test method under the circumstances, to buy more at ease in electric vehicles.