Electrochromic device state retention method, apparatus, system, and storage medium

WO2026129843A1PCT designated stage Publication Date: 2026-06-25SHENZHEN GUANGYI TECH CO LTD

Patent Information

Authority / Receiving Office: WO · WO
Patent Type: Applications
Current Assignee / Owner: SHENZHEN GUANGYI TECH CO LTD
Filing Date: 2025-10-20
Publication Date: 2026-06-25

AI Technical Summary

Technical Problem

During the mode maintenance phase, the theoretical open-circuit voltage of electrochromic devices changes due to temperature variations, resulting in a discrepancy between the actual transmittance and the expected transmittance, which affects the adjustment accuracy.

Method used

By acquiring the current temperature and open-circuit voltage of the electrochromic device, the target open-circuit voltage is determined, and the target charge is calculated based on the temperature function and open-circuit voltage function. Charging or discharging is then performed to maintain the target level, and the charging/discharging direction and voltage range are corrected to ensure that the electrochromic device operates stably under a specific transmittance condition.

Benefits of technology

This improves the adjustment precision of electrochromic devices, avoids the problem of inconsistent transmittance, ensures stable operation of devices under specific transmittance conditions, and enhances user experience and lifespan.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN2025128790_25062026_PF_FP_ABST

Patent Text Reader

Abstract

The present application is applicable to the technical field of electrochromism, and provides an electrochromic device state retention method, an apparatus, a system, and a storage medium. The method comprises: controlling an electrochromic device to complete a state transition; acquiring a current temperature and a current open-circuit voltage of the electrochromic device; determining, according to whether the current temperature falls within a temperature range corresponding to the completion of the state transition, a state of the electrochromic device upon completion of the state transition and a target open-circuit voltage corresponding to the current temperature; and charging or discharging the electrochromic device according to the current open-circuit voltage and the target open-circuit voltage. The embodiments of the present application effectively prevent discrepancies between an actual transmittance and an expected transmittance of electrochromic devices during state retention phases, thereby improving electrochromic device adjustment precision.

Need to check novelty before this filing date? Find Prior Art