BCI protection circuits for lighting fixtures, lighting fixtures, and vehicles

By leveraging the synergistic effects of the filtering module, undervoltage module, and transfer switch module, the problem of malfunctioning lighting under BCI interference was solved, thereby improving the stability and reliability of the lighting fixtures in complex electromagnetic environments and reducing hardware costs.

CN224460071UActive Publication Date: 2026-07-03ZHEJIANG LINGAI FUTURE TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG LINGAI FUTURE TECHNOLOGY CO LTD
Filing Date
2025-07-24
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies are insufficient in suppressing BCI interference with a wide frequency range and continuous energy, which makes automotive lights prone to malfunctioning and affecting user experience.

Method used

The BCI protection circuit employs a filter module, an undervoltage module, and a transfer switch module working in tandem. The filter module processes the power supply signal, the undervoltage module controls the lamps to light up according to a preset threshold, and the transfer switch module quickly cuts off the power supply path to ensure that the lamps only light up within the set voltage range.

Benefits of technology

It effectively prevents lamps from being falsely triggered by BCI interference, improves the stability and reliability of lamps in complex electromagnetic environments, and reduces hardware costs.

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Abstract

This application relates to the field of automotive lighting control technology, and discloses a BCI protection circuit for a lamp, a lamp, and a vehicle. The BCI protection circuit includes a filtering module, an undervoltage module, and a switching module. The filtering module is connected to the lamp's power supply and is adapted to receive the power supply signal, perform BCI filtering on the signal, and output a filtered signal. The undervoltage module is connected to both the filtering module and the switching module, and is adapted to receive the filtered signal and output a shutdown signal based on the filtered signal and a preset threshold. The switching module is connected to the lamp's LED chips and is adapted to receive the shutdown signal and cut off the power supply path to the LED chips based on the shutdown signal, thus providing BCI protection for the lamp. This application uses discrete components to construct the BCI protection circuit, ensuring that the lamp is only lit within a set voltage range and effectively preventing low-voltage false triggering of the lamp.
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