Battery Voltage Equalization via Selective Switch Control
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Solution Overview
Problem
Existing battery assembly systems require complex simultaneous control of multiple current control devices to reduce voltage variation between series connected battery units, complicating the process.
Innovation Solution
A regulating device with a DCDC converter, switches, and a controller that detects voltage differences between battery units and adjusts switches to equalize voltage by charging or discharging specific units, eliminating the need for complex simultaneous control of current control devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple current control devices are connected in series with each battery unit to regulate voltage variation, then voltage equalization is achieved, but the control process becomes complicated and complex
Solution Approach 1:
The patent divides the battery system into multiple independent battery units, each with its own current control device. The control device segments the control process by identifying specific battery units that need charging or discharging based on voltage detection, then independently controlling each unit rather than managing all units simultaneously. This segmentation simplifies the control logic while maintaining voltage equalization effectiveness.
Solution Approach 2:
The control device automatically identifies which battery units require charging or discharging by detecting voltage differences between units. Once identified, the system self-regulates by activating appropriate current control devices for specific units without requiring complex external coordination. The system serves itself by autonomously determining and executing the necessary control actions for voltage equalization.
2Stability of the object's composition
If all current control devices are controlled simultaneously to reduce voltage variation, then voltage stability is improved, but the control complexity and difficulty increase
Solution Approach 1:
Instead of applying uniform control to all battery units, the patent implements local quality control by detecting the specific voltage state of each battery unit and applying control only where needed. The control device identifies individual units with voltage deviations and selectively activates current control devices for those specific units, rather than simultaneously controlling all units. This localized approach maintains voltage stability while simplifying control operations.
3Device complexity
If voltage detection and selective switch control are implemented for individual battery units, then the control process is simplified, but additional control logic and switching mechanisms are required
Solution Approach 1:
The patent implements feedback control by continuously detecting the voltage of each battery unit and using this information to automatically determine which units require charging or discharging. The control device receives feedback from voltage detectors, processes this information to identify units with voltage deviations from the average, and automatically activates the appropriate current control devices. This feedback mechanism enables simplified control logic while maintaining high automation for voltage equalization.
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
This solution simplifies the process of reducing voltage variation between battery units by identifying and adjusting specific units to be charged or discharged, thereby reducing the complexity of controlling multiple current control devices and achieving voltage equalization.
Implementation Method 1
a generating means (2a) for generating an output voltage from an input voltage
Implementation Method 2
a plurality of first switches (2b1 to 2b3), corresponding to the plural series connected battery units, respectively, with each of said first switches interposed between the corresponding series battery unit and the input side of the generating means (2a1)
Data Source
AI summary
A regulating device includes: a generating means for generating an output voltage from an input voltage; a plurality of first switches, respectively corresponding to the plural storage battery units connected in parallel, with each of said first switches interposed between the corresponding storage battery unit and the input side of the generating means; a plurality of second switches, respectively corresponding to the plural storage battery units, with each of said second switches interposed between the corresponding storage battery unit and the output side of the generating means; a detecting means for detecting the voltage of each of the plural storage battery units; and, a control means that, referring to the result of detection from the detecting means, identifies first storage battery units whose voltages are higher than the average value of voltage of the plural storage battery units and second storage battery units whose voltages are lower than the average value, from the plural storage battery units, and turns on the first control switches corresponding to the first storage battery units from among the plural first switches and the second control switches corresponding to the second storage battery units from among the second switches.