公开(公告)号：EP4266540A1

公开(公告)日：2023-10-25

申请号：EP21904820.4

申请日：2021-03-16

申请人： Shenzhen Grepow Battery Co. Ltd

发明人： LIU, Bing ,  LI, Xiangbo ,  TAO, Gongjiao ,  HU, Binghua

IPC分类号： H02J9/00 ,  H02J7/00 ,  G01R31/00

摘要： The present invention relates to the field of short-circuit test and determination and emergency start power supply protection. Disclosed are an emergency start power supply short-circuit protection method and system. In the present invention, an electrical parameter of an emergency start power supply is detected multiple times at a relatively high frequency and whether there is an exception is determined according to the change difference and change direction of the electrical parameter, whether the emergency start power supply is short-circuited is determined by counting determination results, and then exception protection is implemented, so that a normal start state and a short-circuit state is effectively distinguished, and the accuracy of detection is ensured; a short-circuit result can be obtained in a quite short time, thereby avoiding damage caused by a short circuit; moreover, the present invention has good adaptability and can be adapted to various start power supplies and automobile start loads, detection resources required are few, the present invention can be combined with an existing start power supply circuit structure, an additional sensing device does not need to be added, and the use safety and experience of the emergency start power supply are comprehensively improved.