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公开(公告)号：EP4318840A1
公开(公告)日：2024-02-07
申请号：EP21932312.8
申请日：2021-03-30
发明人： LIU, Miao , LIU, Bing , TAO, Gongjiao , HU, Binghua , LI, Zengquan
摘要： Disclosed in the present invention are an arc extinguishing control system and method for a relay of an emergency power supply, which relate to the field of power supplies. A relay serves as a main switching circuit for controlling an emergency power supply, and electronic switching tubes are connected in parallel to two ends of the relay, so as to quickly withstand a voltage jump when the relay is switched off, and thus, the relay is prevented from generating an arc spark, the common problems of existing relays, such as arc damage and an internal resistance increase, are solved, and the relay that has a lower cost and a higher current withstand capability and does not need an additional heat sink is used as a device for controlling the switching on and off, such that an emergency start power supply of a vehicle has better safety, durability and market efficiency. Moreover, when the phenomenon of large-current reverse charging occurring after the vehicle is started is faced, a reverse charging sensing circuit and a reverse charging feedback circuit are used, so that a reverse charging current is directly fed back to a control end of an electronic switching tube when a storage battery is reversely charged by a load, thereby realizing the quick switching off of the electronic switching tube.
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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
发明人： LIU, Bing , LI, Xiangbo , TAO, Gongjiao , HU, Binghua
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.
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