Battery Charging Voltage Calibration in the Constant-Voltage Phase
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Solution Overview
Problem
In the constant voltage charging phase, the charging voltage may be inconsistent with the preset full-charge voltage, leading to incomplete battery charging, energy waste, potential battery damage or explosion, and reduced battery life.
Innovation Solution
A charging apparatus and method that includes a processing unit and a charging control unit to adjust the charging voltage in the constant voltage charging phase by obtaining the actual charging voltage of the battery module, calculating adjustment information based on this value, and adjusting the preset charging voltage to ensure it aligns closer with the preset full-charge voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the charging voltage is kept constant at a preset value during the constant voltage charging phase, then the charging control is simple, but the actual charging voltage may deviate from the preset full-charge voltage, leading to incomplete charging or overcharging
Solution Approach 1:
The patent implements a feedback mechanism by measuring the actual voltage of the battery module during charging and using this measurement to dynamically adjust the charging voltage. The charging control unit receives real-time voltage feedback from the battery module and modifies the output charging voltage accordingly, ensuring the actual charging voltage closely matches the preset full-charge voltage throughout the charging process.
Solution Approach 2:
The patent transitions from a static charging voltage approach to a dynamic one. Instead of maintaining a fixed preset charging voltage, the system continuously adjusts the charging voltage based on real-time battery state measurements. This dynamic adjustment allows the charging voltage to adapt to changing battery conditions, resolving the contradiction between simple control and precise voltage maintenance.
2Measurement precision
If the charging voltage is adjusted frequently to maintain precision, then the charging voltage accuracy improves, but the control system complexity and energy consumption increase
Solution Approach 1:
The patent employs periodic voltage measurement and adjustment during the constant voltage charging phase. Instead of continuous adjustment, the system measures the battery module voltage at regular intervals and performs adjustments based on these periodic measurements. This approach maintains charging voltage accuracy while reducing the complexity and energy consumption associated with continuous control operations.
3Measurement precision
If the charging voltage is adjusted frequently to maintain precision, then the charging voltage accuracy improves, but the energy waste increases
Solution Approach 1:
The patent implements periodic rather than continuous voltage adjustment during charging. By measuring and adjusting the charging voltage at scheduled intervals during the constant voltage phase, the system maintains accurate charging voltage while minimizing the energy consumed by the control system. This periodic approach reduces unnecessary energy expenditure compared to continuous adjustment mechanisms.
Data Source
AI summary
This application provides a charging apparatus. The charging apparatus is used in an electronic device. The electronic device includes a battery module, and the battery module corresponds to a constant voltage charging phase in a charging process. The apparatus includes a charging control unit and a processing unit. The charging control unit is configured to output a preset first voltage to the battery module in the constant voltage charging phase. According to this application, a charging voltage in the constant voltage charging phase can be calibrated, to ensure a battery life and power consumption safety of the electronic device.