Controllers, motors, and switching power supplies are all important parts of electric vehicles. 

The controller is the "brain" of electric vehicles. It manipulates each component to carry out work in an orderly manner. 

Therefore, when the electric vehicle controller is damaged, it will not be able to apply normally, 

so what are the main factors that easily cause the electric vehicle controller to be invalid?

1. The damage of the power device is generally possible in the following categories: caused by motor damage; caused by poor quality

 or insufficient use of the output power device itself, caused by device installation or vibration loosening, caused by motor load,

 power The device's optocoupler circuit is damaged or the main parameter design plan is unscientific.

2. The switching power supply of the internal power supply system of the controller is damaged. Generally, the following types 

are very likely: the internal circuit of the controller is short-circuited, the field control system is short-circuited, and the external 

wire is short-circuited.

3. The controller sometimes does not work. Generally, the following categories are very likely: the main parameters of the device

 itself drift in a high temperature or ultra-low temperature natural environment; the overall design of the controller has a large 

functional loss, which causes some parts of the device to be too hot and the device itself Into the maintenance situation,

 poor contact phenomenon.

4. The electrode connection line is worn out and the connector is poor or dropped, resulting in the loss of the operating data signal.

 Generally, the following categories are very likely: unscientific selection of cables; imperfect maintenance of cables; 

imperfect riveting of connectors.

       Marshell has a wide range of products. There are more than 100 electric vehicles and electric equipment including 

electric sightseeing cars, golf carts, police patrol cars, fire patrol cars, sanitation vehicles, multi-function electric vehicles, 

electric industrial handling vehicles, and electric cleaning equipment series. It is widely used in off-highway passenger 

vehicle fields such as tourist attractions, golf courses, garden communities, security systems, environmental sanitation industries, 

hotels and industrial and mining warehousing. The main high-tech components independently researched and developed 

have always been the highlights of the  Marshell  brand. The unremitting efforts in scientific research and development have enabled 

 Marshell's electric vehicle technology to maintain the advantage of winning the industry.  Marshell welcomes customers 

at home and abroad to visit the company to discuss business and build a better future together.