Secondary Battery Management Apparatus Power Control
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Solution Overview
Problem
Secondary battery management systems continue to consume power even when not in use, leading to unnecessary power depletion and potential overdischarge, as they monitor voltage, current, and temperature continuously, even when the battery is not in charge or discharge mode.
Innovation Solution
A secondary battery management apparatus that includes a current control switch, connector, communication terminal, and power supply switch, which initiates or terminates operations based on connection to a charge/discharge device or presence of a communication request signal, and disconnects power when an overdischarge state is detected, using a switch controller to manage power supply lines and prevent unnecessary consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the microprocessor continuously monitors voltage, current, and temperature to maintain management operation, then the reliability of battery management is improved, but the power consumption increases causing unnecessary SOC reduction
Solution Approach 1:
The patent applies the dynamics principle by making the microprocessor's operating state changeable between active and sleep modes based on battery usage conditions. The control unit dynamically adjusts the monitoring frequency and microprocessor activity level according to whether the battery is in charge/discharge mode or storage mode, resolving the contradiction between continuous monitoring reliability and power consumption.
Solution Approach 2:
The patent implements periodic action by transitioning the microprocessor between full monitoring cycles and reduced monitoring cycles. During charge/discharge operations, continuous periodic monitoring maintains reliability, while during storage periods, the system switches to periodic wake-up checks at extended intervals, reducing power consumption while maintaining adequate oversight.
2Speed
If the microprocessor maintains operating state to monitor battery parameters, then the response time for abnormal situations is improved, but the SOC is continuously reduced due to power consumption
Solution Approach 1:
The system dynamically adjusts the microprocessor's operational state based on real-time battery conditions. During active charge/discharge modes, the microprocessor maintains full operational readiness for immediate response. During storage modes, it transitions to a low-power state with extended wake-up intervals, balancing response capability with power conservation.
Solution Approach 2:
The patent applies partial action by implementing selective monitoring levels. Instead of continuous full-parameter monitoring during storage, the system performs partial monitoring at reduced frequency, checking only critical parameters at extended intervals. This provides sufficient protection against abnormal situations while significantly reducing power consumption during periods when full monitoring is not required.
3Reliability
If the management operation continues during storage period, then the protection against abnormal situations is improved, but the battery reaches overdischarge state due to cumulative power consumption
Solution Approach 1:
The system implements periodic wake-up monitoring during storage periods, where the microprocessor enters sleep mode between checks. This allows the battery to be protected at intervals (e.g., weekly or monthly checks) rather than continuously, maintaining adequate protection capability while preventing cumulative power consumption from depleting the SOC during long-term storage.
Solution Approach 2:
The patent changes the operational parameters of the management system based on battery state. When the battery transitions to storage mode, the system modifies monitoring frequency, threshold sensitivity, and microprocessor duty cycle parameters. This parameter adjustment maintains protective functionality while adapting power consumption to the reduced activity level appropriate for storage conditions.
Data Source
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AI summary
A secondary battery management apparatus is disclosed. A secondary battery management apparatus according to the present disclosure includes: a current control switch for opening and closing the flow of charge current or discharge current of a secondary battery; a connector for selectively providing a power conducting state and a power cutoff state based on whether the secondary battery management apparatus is connected to a charge/discharge device; a communication terminal for providing a communication interface with the charge/discharge device; a power supply for receiving power from the secondary battery and supplying the received power to a component that requires electrical power; a power supply line including a power supply switch and supplying or cutting off the power from the secondary battery to the power supply; a switch controller for detecting the reception of a communication request signal through the communication terminal during connection to the charge/discharge device through the connector and transmitting a turn-on signal to the power supply switch; and a controller connected to the power supply and initiating or terminating a management operation for the secondary battery.