Neutral-Wire Current Control in Battery Charging-Discharging Circuits
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Solution Overview
Problem
Existing charging and discharging circuits for power batteries lack a regulation scheme to handle abnormalities in current values, leading to potential damage to the circuit due to untimely current adjustments.
Innovation Solution
A control method and apparatus for a charging and discharging circuit that acquires real-time current values in the neutral wire and adjusts them based on known peak currents of the switching bridge arm group and the neutral wire, ensuring timely adjustments and preventing circuit damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time current monitoring and regulation is implemented, then circuit safety is improved, but device complexity increases
Solution Approach 1:
The patent implements real-time monitoring of current values in the neutral wire and uses feedback control to compare actual current against preset safety values. When abnormalities are detected, the system automatically regulates the charging and discharging current, creating a closed-loop feedback mechanism that ensures circuit safety without requiring complex manual intervention systems.
Solution Approach 2:
The control system performs self-regulation by automatically detecting current abnormalities and adjusting charging/discharging parameters without external intervention. The system monitors its own operational state and takes corrective action when safety thresholds are approached, enabling the circuit to protect itself through inherent control mechanisms rather than requiring additional complex safety infrastructure.
2Reliability
If timely current adjustment is made to prevent circuit damage, then reliability is improved, but response time is reduced
Solution Approach 1:
The patent establishes preset safety values for current before charging and discharging operations begin. By pre-defining safe operating thresholds and having the control system ready to compare real-time measurements against these predetermined limits, the system can immediately detect and respond to abnormalities without requiring complex real-time calculations or decision-making delays.
Solution Approach 2:
The real-time feedback mechanism continuously monitors current values and immediately triggers regulation actions when preset safety thresholds are exceeded. This continuous monitoring and instant response capability eliminates detection delays and enables the system to react to current abnormalities as they occur, ensuring timely circuit protection while maintaining efficient charging and discharging operations.
Data Source
AI summary
The present application discloses a control method, apparatus, device, and system for a charging and discharging circuit, and a storage medium. A neutral wire of a motor in the charging and discharging circuit is connected to a charging and discharging switching bridge arm group, the method including: acquiring a first current value in the neutral wire in real time during charging and discharging of a power battery by the charging and discharging circuit; and regulating the magnitude of the first current value according to the first current value, first peak current, and second peak current, where the first peak current is known peak current of the charging and discharging switching bridge arm group, and the second peak current is known peak current in the neutral wire.