Multi-Battery Pack Charging Control Using Voltage-Based Parallel Sequencing
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Solution Overview
Problem
Traditional parallel connection methods for multiple battery packs in multi-battery pack systems result in sequential charging, leading to prolonged charging times and low charging efficiency.
Innovation Solution
A parallel control method for multiple battery packs that acquires real-time voltages, identifies the battery pack with the minimum and second minimum voltages, and controls them to be simultaneously charged once a predetermined charging condition is met, ensuring all battery packs are simultaneously charged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional parallel connection methods are used for multiple battery packs, then the system structure is simple, but the charging time is prolonged and charging efficiency is low
Solution Approach 1:
The patent implements dynamic charging control by continuously monitoring real-time voltages of battery packs and adjusting charging allocation accordingly. The system dynamically identifies battery packs with minimum and second minimum voltages and allocates charging current preferentially to these packs, enabling adaptive optimization of charging efficiency while reducing overall charging time.
Solution Approach 2:
The patent changes the charging parameter allocation strategy by introducing voltage-based differential charging. Instead of uniform charging distribution, the system modifies charging current allocation based on real-time voltage parameters, preferentially charging battery packs with lower voltages to achieve balanced and efficient parallel charging across multiple packs.
2Productivity
If sequential charging control is used for battery packs, then the control logic is simple, but the charging efficiency is low
Solution Approach 1:
The patent segments the charging control process into distinct phases: voltage detection phase, analysis phase, and controlled charging phase. By dividing the multi-battery pack system into individually monitorable units and applying segmented control strategies (first charging minimum voltage pack, then charging second minimum voltage pack), the system achieves efficient parallel charging while maintaining manageable control complexity through structured segmentation.
3Productivity
If real-time voltage monitoring and simultaneous charging control are implemented, then charging efficiency is improved, but the control system complexity increases
Solution Approach 1:
The patent implements feedback control by continuously monitoring real-time voltages of all battery packs and using this feedback information to dynamically adjust charging current allocation. The system feeds back voltage status to the control unit, which then modifies charging strategies accordingly, enabling optimized charging efficiency through closed-loop control while managing system complexity through systematic feedback mechanisms.
Data Source
AI summary
A parallel control method for multiple battery packs includes: in response to the multi-battery pack system being in a charging state, acquiring real-time voltages of the battery packs in the multi-battery pack system; determining a first battery pack and a second battery pack based on the real-time voltages, wherein a voltage of the first battery pack is a minimum voltage in the real-time voltages, and a voltage of the second battery pack is a second minimum voltage in the real-time voltages; controlling the first battery pack to be charged; and in response to the voltage of the first battery pack and the voltage of the second battery pack satisfying a predetermined charging condition, controlling the first battery pack and the second battery pack to be simultaneously charged, and analogously continuing such control until the all the battery packs in the multi-battery pack system are simultaneously charged.