Non-contact Charger Coil Coupling Control for Battery Balance
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Solution Overview
Problem
Existing non-contact battery charging technologies fail to balance power levels across multiple battery cells and maximize effective currents during wireless charging.
Innovation Solution
A non-contact type charger and battery system that utilizes power transmitting and receiving coils with adjustable coupling coefficients, controlled by a power converting unit and charging control unit, to manage power distribution based on detected power state information, ensuring balanced charging across multiple battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power is transmitted in a non-contact manner to multiple battery cells, then charging convenience is improved, but power level balance between battery cells deteriorates
Solution Approach 1:
The battery pack is divided into multiple independently controllable battery cells, each with its own power receiving coil and charging control circuit. This segmentation allows individual power level management for each cell while maintaining overall non-contact charging functionality, resolving the contradiction between charging convenience and power balance.
Solution Approach 2:
The charging control unit dynamically adjusts the coupling coefficients between the power transmitting coil and each power receiving coil based on real-time power state information. This dynamic adjustment enables continuous optimization of power distribution to maintain balance between battery cells during non-contact charging.
2Ease of operation
If power is transmitted in a non-contact manner to multiple battery cells, then charging convenience is improved, but effective current maximization deteriorates
Solution Approach 1:
The system dynamically optimizes the coupling coefficients between power transmitting and receiving coils based on real-time detection of power state information. This dynamic optimization maximizes the effective current for charging while maintaining non-contact convenience, preventing energy loss and ensuring efficient power transfer to each battery cell.
Solution Approach 2:
The charging control unit continuously detects power state information from each battery cell and uses this feedback to adjust the coupling coefficients in real-time. This feedback mechanism ensures that effective current is maximized by optimizing power transmission based on actual charging conditions of each cell.
3Stability of the object's composition
If coupling coefficients are adjusted to balance power levels, then power distribution balance is improved, but system complexity increases
Solution Approach 1:
Multiple battery cells are integrated into a single battery pack with a unified charging control unit that manages all cells simultaneously. This merging approach maintains power distribution balance through centralized control while avoiding the complexity of completely independent charging systems for each cell.
Solution Approach 2:
The charging control unit performs multiple functions: it detects power state information from all battery cells, calculates optimal coupling coefficients, and controls power distribution to maintain balance. This multi-functionality reduces overall system complexity by consolidating control functions in a single unit.
4Productivity
If coupling coefficients are adjusted to maximize effective current, then charging efficiency is improved, but control complexity increases
Solution Approach 1:
The coupling coefficients are dynamically adjusted based on real-time power state information to maximize effective current and charging efficiency. The charging control unit implements this dynamic control through automated algorithms that optimize power transmission without requiring complex manual intervention or overly complicated control circuits.
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 enables balanced power distribution and efficient charging of multiple battery cells by dynamically adjusting power transmission based on coupling coefficients, maintaining optimal power levels and maximizing current flow.
Implementation Method 1
a plurality of power transmitting coils transmitting power in a non-contact manner
Implementation Method 2
a plurality of power receiving coils receiving the power transmitted by the plurality of power transmitting coils in a non-contact manner to charge a plurality of battery cells
Data Source
AI summary
There is provided a non-contact type charger including: a plurality of power transmitting coils transmitting power in a non-contact manner; and a power converting unit controlling the power transmitted by the plurality of power transmitting coils depending on coupling coefficients, wherein the coupling coefficients are set by transmitting power state information between each of the plurality of power transmitting coils and a plurality of power receiving coils which receive the power transmitted by the plurality of power transmitting coils to charge a plurality of battery cells connected thereto with the power.