Battery Unit Control Device Equalizing Charge via Pause Intervals
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Solution Overview
Problem
Existing battery modules in automobile systems lack a method to ensure equal charging and discharging of battery units, leading to potential overcharging or over-discharging, which shortens the life span of the battery modules.
Innovation Solution
A control device and method that detects battery units, calculates average parameters, selects units based on charging or discharging status, sets a pause time, and adjusts charging or discharging accordingly to prevent overcharging or over-discharging by turning off switches during the pause time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery units are charged or discharged simultaneously without individual control, then charging/discharging speed is improved, but some battery units may be overcharged or over-discharged leading to reduced life span
Solution Approach 1:
The patent segments the battery module into multiple independently controllable battery units, each with its own switching element. The control device manages each unit separately through individual switches, allowing selective charging/discharging control while maintaining overall system productivity. This segmentation enables the system to charge/discharge multiple units simultaneously without risking overcharge/over-discharge of individual units.
Solution Approach 2:
The patent implements dynamic control by continuously monitoring the charging/discharging status of each battery unit and adjusting the switching states in real-time. The control device dynamically selects which units to charge or discharge based on their current status, ensuring that no unit is overcharged or over-discharged while maintaining efficient overall operation. This dynamic adjustment resolves the contradiction between speed and reliability.
2Device complexity
If connection strength between connecting device and battery modules is not monitored, then device complexity is reduced, but impedance becomes unstable leading to unreliable power supply
Solution Approach 1:
The patent incorporates a feedback mechanism where the control device continuously monitors the charging/discharging status and connection conditions of each battery unit. Based on this feedback, the control device adjusts the switching states to maintain stable impedance and reliable power supply. The feedback loop detects changes in connection strength and responds by adjusting the charging/discharging configuration, thereby maintaining power supply stability without requiring complex additional monitoring hardware.
3Productivity
If battery units are charged or discharged without pause intervals, then productivity is improved, but unequal charging/discharging occurs leading to overcharge or over-discharge
Solution Approach 1:
The patent implements periodic action by introducing controlled pause intervals in the charging/discharging process. The control device periodically switches between different battery units, providing rest periods that allow equalization of charge levels. This periodic switching pattern maintains productivity by keeping multiple units in operation while ensuring uniform charging/discharging through strategic pausing and rotation of active units.
Data Source
AI summary
A control device and a control method for equally charging and discharging battery units may prolong life of the battery units of the control device. The control method includes steps of: detecting the battery units to generate measuring parameters; calculating determining parameters; calculating an average value of the determining parameters; selecting one of the battery units according to an operating status of the battery units; calculating a setting parameter; setting a pause time; charging or discharging the selected battery unit after stopping charging or discharging the selected battery unit for the pause time. When the battery units are charged or discharged, an overcharged or over-discharged battery unit may be selected. The selected battery unit may be stopped charging or discharging for the pause time. Therefore, life of the battery units may be prolonged.