The battery pack is usually composed of several single cells in series, and the internal resistance of the battery is an important factor affecting the charge discharge balance of the battery in series. Therefore, the production of the battery pack needs to detect the internal resistance of the single battery first, and match them consistently to ensure the best performance of the battery pack as a whole.
In the actual use of the battery pack, we need to regularly detect the working state of the battery pack to ensure the normal operation of the system. At this time, we need to use the battery internal resistance tester which supports online testing. It can quickly and accurately obtain the dynamic change of the internal resistance of a single battery, so as to judge whether the battery is ineffective.

The relevant system to convert electric energy into kinetic energy is the focus of the design and development of new energy vehicles, which directly affects the vehicle efficiency and driving experience. The electric energy system of new energy vehicles needs to operate efficiently in extreme situations, such as the control of high current induction motor,   Solenoids and other drive components cause voltage transients and losses in power systems during critical operation.
In order to keep the performance of automotive electronic system in critical task, the ECU must be thoroughly tested. Battery array development and maintenance is a daily challenge for design and test engineers of new energy vehicles. Battery capacity and its quality state are inevitably related to safety, so charging pile and battery array test solutions are necessary and important.

In recent years, with the aggravation of energy crisis, renewable energy represented by solar energy has been developed rapidly, the demand for photovoltaic inverter is more and more, and the technical requirements are also higher and higher. How to test the photovoltaic inverter is also an urgent problem to be solved.
The function of photovoltaic inverter is to convert the variable DC voltage generated from the solar panel into AC, which can feed back the converted power to the commercial power transmission system, so it is an important part of the photovoltaic power generation system, and its performance directly affects the electric forced feedback and power quality.