Battery Control System with Switched Terminal Isolation
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Solution Overview
Problem
Existing battery systems in hybrid vehicles face challenges in efficiently managing multiple voltage levels and isolating faulty batteries, which can lead to performance issues and reduced reliability.
Innovation Solution
A battery control system with multiple individually housed batteries and switches, controlled by a switch control module that adjusts connections based on operating modes and detects faults to isolate faulty batteries, ensuring optimal voltage distribution and system stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple batteries are connected in parallel to provide high current output, then the power delivery capability is improved, but the difficulty of isolating faulty batteries increases
Solution Approach 1:
The battery system is divided into multiple individually housed batteries (12V batteries 224) with separate compartments. Each battery can be independently isolated using individual switches (232), allowing faulty batteries to be segmented out without affecting the entire system. This segmentation enables maintenance of high power delivery through remaining healthy batteries while simplifying fault isolation procedures.
2Stress or pressure
If batteries are connected in series to provide high voltage output, then the voltage level is improved, but the reliability of the system decreases due to potential faulty connections
Solution Approach 1:
Individual switches (232) act as intermediary components between batteries connected in series. These switches provide isolation points that allow any faulty battery or connection to be disconnected without affecting the entire series chain. The intermediary switches maintain system reliability by enabling selective removal of problematic elements while preserving high voltage output through remaining batteries.
3Device complexity
If a single large battery is used to simplify the battery structure, then the device complexity is reduced, but the ability to provide multiple voltage levels decreases
Solution Approach 1:
Multiple individually housed batteries (224) serve universal functions within the system. Each battery can be independently connected to different terminal pairs (210/212, 214/220, 216/220) to provide multiple voltage levels (48V, 12V, or other configurations). This multi-functionality allows a single battery assembly to replace what would otherwise require multiple dedicated battery packs for different voltage requirements, actually simplifying the overall system architecture while maintaining versatility.
Data Source
AI summary
A battery control system includes a battery comprising: first and second terminals; third and fourth terminals; a plurality of individually housed batteries; and a plurality of switches configured to connect ones of the batteries to and from ones of the first, second, third, and fourth terminals. A mode module is configured to set a mode of operation based on at least one of a plurality of present operating parameters. A switch control module is configured to control the plurality of switches based on the mode of operation.