SECONDARY BATTERY AND PROTECTION DEVICE THEREOF
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United States of America Patent
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Issued Date -
Dec 10, 2020
app pub date -
Oct 4, 2019
filing date -
Jun 10, 2019
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Abstract
A secondary battery connecting to an external circuit through a first output terminal and a second output terminal. The secondary battery comprises an accumulator, a plurality of protective circuits and a switch element. Each of the protective circuits comprises two fuses connected in series to form a series circuit, a heater for blowing the fuses and a rectifier element in parallel connection to the heater. The series circuits of the two fuses are connected to each other in parallel. One end of the rectifier and the heater is connected to a junction between the two fuses, and another end of u) the rectifier and the heater connect to the switch element. One of the two fuses of each of the protective circuits connects to the first output terminal, and the switch element connects to the second output terminal.
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