Voltage Balancing Control Circuit for Series Backup Storage Cells
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Solution Overview
Problem
Voltage variations between multiple electricity storage devices connected in series can accelerate their performance deterioration, necessitating a solution to reduce these variations.
Innovation Solution
An electricity storage device control circuit with a voltage detector and controller that individually adjusts the voltage of each device by discharging or charging electrostatic energy to equalize voltages across the devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple electricity storage devices are connected in series to increase backup power supply capacity, then the total energy storage capacity and power supply capability are improved, but voltage variations between individual devices accelerate performance deterioration and reduce system reliability
Solution Approach 1:
The control circuit continuously monitors the voltage of each electricity storage device through voltage detection units and adjusts the charging current distribution based on real-time voltage differences. This feedback mechanism ensures that devices with lower voltage receive more charging current, while devices with higher voltage receive less current, thereby maintaining voltage balance and preventing premature deterioration of any single device.
Solution Approach 2:
The system dynamically changes the charging current parameter for each electricity storage device based on its voltage state. By adjusting the charging current allocation according to individual device voltage levels, the system optimizes the charging process to reduce voltage variations and extend the overall system lifespan.
2Power
If multiple electricity storage devices are connected in series to provide sufficient backup power, then the power supply capability is improved, but voltage variations cause unequal deterioration speeds and reduce the service life of the backup power supply
Solution Approach 1:
The control circuit dynamically adjusts the charging current parameter for each electricity storage device based on real-time voltage detection. Devices with lower voltage are allocated higher charging current, while devices with higher voltage receive lower charging current, thereby equalizing the charging rate and extending the overall service life of the backup power supply system.
Solution Approach 2:
The system performs preliminary voltage detection and balancing control during the charging process to prevent voltage variations from accumulating to harmful levels. By proactively managing voltage balance before significant deterioration occurs, the system extends the operational lifespan of all electricity storage devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces voltage variations, preventing over-voltage conditions and slowing down the deterioration of electricity storage devices, thereby extending their lifespan and improving system reliability.
Implementation Method 1
a voltage detector configured to detect voltages of a plurality of electricity storage devices
Implementation Method 2
performing, based on a detection result by the voltage detector, at least one of discharging electrostatic energy stored in the plurality of electricity storage devices
Implementation Method 3
charging electrostatic energy into the plurality of electricity storage devices
Data Source
AI summary
The electricity storage device control circuit includes a voltage detector and a voltage controller. The voltage detector is configured to detect voltages of a plurality of electricity storage devices. The voltage controller is configured to individually control the voltages of the plurality of electricity storage devices by performing, based on a detection result by the voltage detector, at least one of discharging or charging of electrostatic energy stored in the plurality of electricity storage devices.