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NIO Automotive applies for a dual power backup circuit patent to achieve mutual power backup

Article Source：China National Intellectual Property Administration | Author：financial sector | Issuing Time：2024.03.25
On March 23, 2024, the financial sector reported that according to the announcement of the China National Intellectual Property Administration, Weilai Automotive Technology (Anhui) Co., Ltd. applied for a patent entitled "a dual power backup circuit, backup method and vehicle", with the publication number of CN117748706A and the application date of December 2023.


The patent abstract shows that the present invention relates to the field of vehicle power management. The backup circuit of the dual power supply of the present invention includes a first power supply, a second power supply, a first load, and a second load. The output end of the first power supply is connected to the first load through a first unidirectional conducting element, and the output end of the second power supply is connected to the second load through a second unidirectional conducting element. It also includes a first switching circuit and a second switching circuit. When the output voltage of the second power supply is detected to be lower than a preset threshold, the first switching circuit is controlled to conduct, so that the first power supply supplies power to the second load through the first switching circuit. When the output voltage of the first power supply is detected to be lower than a preset threshold, the second switching circuit is controlled to conduct, so that the second power supply passes through the second power supply. The second switching circuit supplies power to the first load. The present invention has a simple circuit, low cost, and realizes mutual backup of power sources.
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