Battery Control Switch Chain for Concurrent Power Multiplexing
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Solution Overview
Problem
Conventional power switches require a handshake between switches to monitor the power status of a predecessor switch before switching, leading to voltage gaps and inefficiencies in power multiplexing, especially in applications like charging and discharging energy devices in electric vehicles.
Innovation Solution
A control switch system that allows concurrent switching with break-before-make or make-before-break multiplexing, using demultiplexers and comparators to manage charging and discharging operations without requiring external microcontrollers, enabling flexible and efficient power management of energy devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional power switches use break-before-make or make-before-break switching with handshake monitoring, then power status control is achieved, but voltage gaps occur and switching efficiency is reduced
Solution Approach 1:
The patent extracts the monitoring function from the switching control process. Instead of requiring successor switches to monitor predecessor switch status through handshake protocols, the system uses independent monitoring of power source availability and load requirements at each switch stage, eliminating the time-consuming monitoring dependency chain
Solution Approach 2:
The patent implements preliminary action by pre-configuring control switches with independent monitoring capabilities that assess power source status and load requirements before switching decisions are made. This allows each switch to independently determine switching conditions without waiting for handshake signals from previous switches, eliminating voltage gaps and improving switching efficiency
2Reliability
If conventional power multiplexers require handshake monitoring between switches, then power status monitoring is achieved, but device complexity increases
Solution Approach 1:
The patent segments the power multiplexing system into independent control switch stages, where each switch operates autonomously with its own monitoring capabilities. This segmentation eliminates the need for complex inter-switch handshake protocols, reducing overall system complexity while maintaining reliable power status monitoring at each stage
Solution Approach 2:
Each control switch in the patent performs self-service monitoring of power source availability and load requirements independently. This self-service approach eliminates dependency on external microcontrollers or complex handshake mechanisms, simplifying the control chain while ensuring reliable power status monitoring
3Speed
If high-power charging systems are used to reduce charging time, then charging speed is improved, but infrastructure availability is reduced
Solution Approach 1:
The patent implements dynamic battery management by enabling selective activation of individual battery modules based on charging requirements and power source availability. This dynamic configuration allows the system to optimize charging speed when high-power sources are available while maintaining operational flexibility when only lower-power sources are accessible, effectively bridging the gap between charging speed and infrastructure availability
Data Source
AI summary
A control switch incorporating a 1:2 demultiplexer is used in controlling timing for concurrent switching, break-before-make and make-before-break power multiplexing, and is configurable to link a plurality of the control switches into a control chain to perform sequential charging, sequential discharging, parallel charging, parallel discharging, simultaneous sequential charging and discharging for a plurality of batteries coupled to the control chain in a power system.