Multi-Battery BMS Control for Voltage Surge Isolation
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Solution Overview
Problem
Integration of multiple batteries in electrical equipment poses safety and compatibility challenges, particularly due to issues like inter-battery charging and large current surges when batteries of different voltages are connected.
Innovation Solution
A multi-battery system where the conducting state of each battery is controlled by a battery management system (BMS), which monitors electric characteristics and ensures safe operation by preventing inter-battery charging and managing power output based on voltage and charge conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple batteries are integrated in electrical equipment, then power supply capacity is improved, but safety and compatibility challenges arise due to inter-battery charging and large current surges
Solution Approach 1:
A battery management system (BMS) is introduced as an intermediary component between multiple batteries and the electrical equipment. The BMS monitors voltage levels of individual batteries and controls current flow, preventing direct inter-battery charging connections. When batteries with different voltages are detected, the BMS isolates them or balances charges before connection, thereby eliminating harmful current surges while maintaining the multi-battery power configuration.
2Adaptability or versatility
If batteries of different voltages are connected, then system adaptability is improved, but large current surges occur causing damage
Solution Approach 1:
The battery management system performs preliminary voltage assessment and conditioning before connecting batteries of different voltages. The BMS measures each battery's voltage level, identifies voltage differences, and executes preliminary charge balancing or isolation procedures. This preliminary action prevents large current surges from occurring when batteries are connected, allowing the system to adaptively handle different battery configurations safely.
3Ease of operation
If manual power switches are used for battery control, then ease of operation is improved, but safety control and compatibility management become complex
Solution Approach 1:
The battery management system implements self-service automated control that replaces manual power switch operations. The BMS autonomously monitors battery states, determines optimal connection configurations, and controls current flow without requiring manual intervention. This self-service approach simplifies user operation while the system internally manages the complexity of safety control and compatibility between multiple batteries.
Data Source
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AI summary
Systems and methods of use thereof for safe and reliable operation of battery systems are disclosed. One such battery implementation includes a battery for supplying current to a device, comprising: a housing; one or more battery cores disposed in the housing; and a battery management system (BMS) electrically connected to the one or more battery cores and configured to: receive a signal selected from a group consisting of (a) a termination signal from a control unit of a device to which the battery is adapted to supply power, (b) a power-off signal from a power switch of the device, and (c) an absence of an in-place signal received within a predetermined period of time, indicating the battery is not connected to the device; and configure the battery cores to stop supplying current at an operating voltage to the device.