Battery Module ID Assignment via Gate Signal Line
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Solution Overview
Problem
Conventional power supply devices cannot provide a unique ID to each battery module using a gate signal line, limiting their ability to communicate and manage individual module status effectively.
Innovation Solution
The power supply device employs a gate driving signal processing circuit that delays and transmits an ID setting signal through the gate signal line, allowing each battery module to set a unique ID by modifying the signal waveform or pulse number, enabling the controller to identify and manage connected modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a dedicated signal line is provided for ID communication in each battery module, then ID provision capability is improved, but device complexity increases
Solution Approach 1:
The gate signal line is designed to serve dual purposes: transmitting gate driving signals for switching control and transmitting ID setting signals for battery module identification. The gate driving signal processing circuit detects specific signal patterns (e.g., prolonged high level, specific pulse patterns) to distinguish ID setting mode from normal switching mode, enabling one signal line to fulfill multiple communication functions without requiring additional dedicated ID lines.
2Device complexity
If conventional gate signal line is used only for switching control, then signal line function is simple, but ID provision capability is lost
Solution Approach 1:
The gate driving signal processing circuit dynamically adapts its operation mode based on the received signal characteristics. During normal operation, it processes gate driving signals for switching control. During ID setting, it detects specific signal patterns (such as prolonged high level signals or specific pulse sequences) and transitions to ID setting mode, where it interprets the signal to determine the battery module's ID and stores it in memory, thus enabling the circuit to perform different functions based on signal dynamics.
3Reliability
If dedicated ID signal lines are provided for each battery module, then ID communication is reliable, but manufacturing cost increases
Solution Approach 1:
The gate signal line is designed to serve dual purposes: transmitting gate driving signals for switching control and transmitting ID setting signals for battery module identification. The gate driving signal processing circuit detects specific signal patterns (e.g., prolonged high level, specific pulse patterns) to distinguish ID setting mode from normal switching mode, enabling one signal line to fulfill multiple communication functions without requiring additional dedicated ID lines.
Data Source
AI summary
In a power supply device including a plurality of battery modules each including a secondary battery, in which the battery modules are connected in series to one another according to a gate driving signal from a controller and in each of the battery modules, the gate driving signal is delayed in a gate driving signal processing circuit included in the battery module and then transmitted from upstream to downstream of the series connection, an ID is provided for each of the battery modules by transmitting an ID setting signal for providing an ID unique to the battery module using a gate signal line for transmitting the gate driving signal.