Battery passport anti-counterfeiting system

Abstract

The invention provides a battery passport anti-counterfeiting system, which comprises a first APUF module, a second APUF module, a first hierarchical delay balance module, a second hierarchical delay balance module and a self-checking module, and is characterized in that the first APUF module comprises a first multi-stage delay chain and a third multi-stage delay chain, and the second APUF module comprises a second multi-stage delay chain and a fourth multi-stage delay chain; the first hierarchical delay balance module and the second hierarchical delay balance module are used for performing coarse tuning and fine tuning compensation on PCB delay signals input into the first multi-stage delay chain and the second multi-stage delay chain, and performing coarse tuning and fine tuning compensation on PCB delay signals input into the third multi-stage delay chain and the fourth multi-stage delay chain; and the self-checking module is used for judging the reliability of the response bit based on the test threshold value and the delays of the first multi-stage delay chain, the second multi-stage delay chain, the third multi-stage delay chain and the fourth multi-stage delay chain. According to the invention, the problems of cross-medium delay collaboration and offset elimination are eliminated.

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