Vemma has been pushed to the forefront of the storm recently. According to incomplete statistics, Vemma has four spontaneous combustion incidents in 35 days. Vemma has also made a timely response to this series of incidents, recalling 1282 vehicles. The recall announcement stated that vehicles produced within a certain period of time using a certain specification of battery packs were recalled. This made the public pay attention to the problem of battery short circuit again. The problem of battery short circuit and micro short circuit has also become the focus of attention of major battery manufacturers.

Event review:

First: On September 23, a Weima EX5 in Wenzhou burst into spontaneous combustion, and the battery pack on the vehicle did not catch fire or explode.

The second incident: On October 5, a Weima EX5 parked at the roadside in Shaowu City, Fujian Province, caught fire and spontaneously ignited, resulting in a large area of body fire. It is reported that the fire occurred at the rear of the vehicle and gradually spread to the whole body, and the vehicle was completely damaged.

The third incident: On October 13, there was another spontaneous combustion of Weima in Fujian Province. This time, it was a Weima EX5 car with 96% charge. The two Weima car accidents in Fujian were the same batch of vehicles purchased by Shaowu Jiale Taxi Co., Ltd., which were put on the market for only a few days.

The fourth incident: On October 27, a Weima EX5 electric vehicle in the East Fourth Ring Mechanics Institute of Haidian District, Beijing, caught fire and exploded. According to eyewitnesses, this Weima EX5 "exploded when it was parked in the original place and was not charged". The explosion was also very powerful, and many residents around it felt strong.

                                                    Picture from network

The short circuit test of lithium battery has always been the focus of all battery manufacturers. The current short circuit test can solve the conventional short circuit problem and the problem with serious defects. However, the micro short circuit phenomenon is still beyond the traditional test. The pulse short circuit tester RJ69 series produced by Qingdao Ruijie Intelligent Instrument Co., Ltd. is precisely positioned in the field of micro short circuit test. Fast detection speed, unique test method and sensitive detection accuracy are the unique functions that make the micro-circuit phenomenon invisible.

Since 2012, the RJ69 series produced by Ruijie Instruments has begun to subvert the previous test methods and infiltrate the battery industry. It has been the first choice of many enterprises since the beginning.

Product introduction:

During the winding or laminating process of lithium battery cells, there will inevitably be problems such as dust mixing, uneven winding and diaphragm damage, which will lead to potential safety hazards of lithium batteries and difficult detection. At present, the detection equipment and methods in the industry are not perfect, and the detection rate of nonconforming products is not ideal.

RJ69 series lithium battery short circuit tester is a pulse short circuit tester for measuring battery cells. In addition to the conventional leakage current detection function, it can also monitor the test waveform in the whole process, capture the instantaneous drop, and detect the short circuit and micro short circuit battery cell defective products that are difficult to detect under normal conditions in a short time.

RJ69 series can be used for cell detection of different materials such as lithium cell, nickel hydrogen cell, supercapacitor, etc.

RJ69 series tester can be used for winding machine, laminating machine, core assembly line and (micro) short circuit test before core liquid injection, which can improve the test efficiency of the production line and adapt to the test rhythm of the production line.