Dual-Channel Battery Charging With Cell Voltage Equalization
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Solution Overview
Problem
Conventional charging systems face inefficiencies and compatibility issues due to the need for conversion circuits that generate heat, leading to thermal interference and reduced battery lifespan, especially in devices with multiple cells, where heat dissipation is challenging and compatibility with different power supply devices is limited.
Innovation Solution
A charging control apparatus with a first and second charging channel, and an equalizing circuit, capable of managing charging signals from different power supply devices, allowing direct charging and voltage equalization across cells, thereby reducing heat generation and enhancing compatibility with various power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conversion circuits are used to enable charging compatibility, then compatibility with different power supply devices is improved, but heat generation increases causing thermal interference and reduced battery lifespan
Solution Approach 1:
The battery pack is divided into multiple independent cells (first battery cell, second battery cell, etc.), each capable of being charged independently through separate charging channels. This segmentation allows the system to charge only the necessary cells without requiring complex conversion circuits, thereby reducing heat generation while maintaining charging compatibility.
Solution Approach 2:
The charging control apparatus is designed with multiple charging channels that can universally accept different types of power supply devices (first power supply device, second power supply device, etc.). Each charging channel can handle different voltage levels and charging standards, eliminating the need for conversion circuits and reducing thermal interference while achieving broad charging compatibility.
2Quantity of substance
If multiple battery cells are used to increase capacity, then energy storage is improved, but voltage imbalance between cells increases causing charging inefficiency
Solution Approach 1:
The battery system is segmented into multiple independent cells with separate charging channels for each cell. The charging control apparatus independently controls the charging process of each cell through its respective charging channel, allowing precise voltage management for each cell without being constrained by voltage imbalance issues that plague traditional series-connected battery systems.
Solution Approach 2:
The charging control apparatus incorporates feedback mechanisms that continuously monitor the voltage status of each battery cell and adjust the charging parameters accordingly. This feedback control ensures that each cell receives the appropriate charging voltage, maintaining voltage balance across all cells while maximizing overall battery capacity utilization.
3Power
If series-connected battery cells are used to increase voltage output, then power output is improved, but compatibility with different power supply devices is reduced
Solution Approach 1:
Instead of using series-connected cells to achieve high voltage, the system segments the battery into parallel-independent cells, each with its own charging channel. This allows the system to maintain high power output through parallel current summation while accepting various power supply voltage levels through the independent charging channels, thereby achieving both high power and broad compatibility.
Solution Approach 2:
The charging control apparatus dynamically selects which charging channel to use based on the detected power supply device type and voltage level. This dynamic adaptation allows the system to maintain optimal power output regardless of the connected power supply, achieving both high power capability and broad device compatibility without fixed series connections.
Data Source
AI summary
A charging control apparatus, a device to be charged, and a charging control method are provided. The charging control apparatus includes: a first charging channel configured to charge a plurality of cells coupled in series according to a charging signal provided by a first-type power supply device; a second charging channel configured to charge a part of the cells in the plurality of cells according to a charging signal provided by a second-type power supply device; and an equalizing circuit configured to equalize a voltage of the plurality of cells during an operating process of the second charging channel.