Decoupled battery architecture two-way SSHC rectifier and piezoelectric energy enhanced collection method

By employing a dual-path voltage switching and decoupled storage architecture in a dual-path SSHC rectifier with a decoupled battery architecture, the energy transfer dead zone problem of traditional SSHC rectifiers under impulse excitation or low-frequency conditions is solved, achieving continuous energy transfer and efficient energy harvesting throughout the entire cycle.

CN122456903APending Publication Date: 2026-07-24NANJING UNIV OF POSTS & TELECOMM +1
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Patent Information

Application Number
CN202610421171.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-01
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional SSHC rectifiers suffer from energy transfer dead zones under impulse excitation or low-frequency conditions, which narrows the energy harvesting window and reduces rectification efficiency.

Method used

It adopts a decoupled battery architecture dual-path SSHC rectifier, and through dual-path voltage path switching and decoupled storage architecture, it utilizes a multi-level SSHC network and active rectifier, combined with control circuit to detect piezoelectric voltage in real time and dynamically switch energy transmission paths to achieve continuous energy transmission throughout the entire cycle.

Benefits of technology

It significantly improves energy harvesting efficiency, widens the energy harvesting window, makes full use of the residual energy of the piezoelectric transducer under different operating conditions, and enhances peak output power and full-cycle energy extraction efficiency.

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Abstract

The invention discloses a decoupling battery architecture two-way SSHC rectifier and a piezoelectric energy enhanced collection method. The decoupling battery architecture two-way SSHC rectifier comprises a piezoelectric transducer, a multi-stage SSHC network, an active rectifier, a piezoelectric collection unit, a two-way output switch and a control circuit. The piezoelectric collection unit comprises a high-voltage storage unit and a low-voltage storage unit which are mutually decoupled; the two-way output switch is connected between the output end of the active rectifier and the piezoelectric collection unit and can selectively conduct rectified output to the high-voltage storage unit or the low-voltage storage unit according to the piezoelectric voltage state; the control circuit can detect piezoelectric voltage in real time, and when a voltage blocking condition is detected, the control circuit controls the two-way output switch to switch rectified output to the low-voltage storage unit so as to maintain piezoelectric energy collection. According to the invention, the problem that a traditional SSHC rectifier has an energy transmission dead zone under the impact excitation or low-frequency condition can be solved, and full-cycle energy continuous transmission is realized through dual-path voltage path switching and a decoupling storage architecture, so that the energy collection efficiency is improved.
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