Rechargeable Battery Adaptive Charging Control Circuit
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Solution Overview
Problem
Existing rechargeable batteries lack the ability to adjust charging voltage or current dynamically, leading to longer charging times and potential over-discharge when supplying power to loads, which shortens the battery life.
Innovation Solution
A rechargeable battery with a battery control circuit that communicates with a power delivery unit or external load through a conversion node, allowing for adjustment of charging voltage and current levels, enabling efficient power data transmission and adaptive power supply to match load requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the charging current is selected to be lower to ensure battery safety, then the battery can be charged without risk of overheating or damage, but the charging time becomes longer which leads to poor user experience
Solution Approach 1:
The patent implements dynamic charging current adjustment through a control circuit that communicates with the power delivery unit. The system transitions from static fixed current charging to dynamic adaptive charging, where the charging current is continuously adjusted based on real-time battery status feedback (temperature, voltage, charge level) to optimize both safety and charging speed at different charging stages
Solution Approach 2:
The patent establishes a feedback control mechanism where the battery control unit monitors battery parameters (temperature, voltage, charge state) and communicates this information to the power delivery unit. The power delivery unit then adjusts the charging power accordingly, creating a closed-loop control system that ensures safety while maximizing charging speed through continuous adaptation
2Productivity
If the charging current is increased to reduce charging time, then the charging speed improves and user experience is enhanced, but the battery may overheat or be damaged which reduces reliability
Solution Approach 1:
The system employs dynamic charging current adjustment through a control circuit that communicates with the power delivery unit. The charging current transitions from static fixed values to dynamic adaptive values, continuously optimized based on real-time battery status (temperature, voltage, charge level) to achieve high charging speeds while maintaining safety margins
Solution Approach 2:
A feedback control mechanism is implemented where the battery control unit monitors battery parameters and communicates this data to the power delivery unit. The system uses this feedback to adjust charging power in real-time, enabling high-speed charging while preventing overheating and damage through continuous safety monitoring and adaptive power modulation
3Device complexity
If the battery supplies power to the load without communication capability, then the device structure remains simple, but the load cannot adjust current adaptively which may cause battery over discharge and shorten battery life
Solution Approach 1:
The patent implements a communication mechanism between the battery control unit and the load. The battery control unit transmits battery status information (remaining capacity, voltage, current) to the load, enabling the load to adaptively adjust its current consumption. This feedback loop prevents over-discharge by allowing the load to reduce or stop power consumption when battery levels are low, thereby extending battery life
Solution Approach 2:
The system enables the load to autonomously adjust its power consumption based on battery status information received from the battery control unit. The load performs self-regulation of current draw without requiring external control, optimizing power usage efficiency and preventing battery over-discharge through intelligent adaptation to available power levels
Data Source
AI summary
A rechargeable battery is coupled to a power delivery unit or an external load unit. In a charging mode, the power delivery unit converts an input power to a converted voltage and/or current. A charging circuit converts the converted voltage and/or current to a charging voltage and/or current for charging the rechargeable battery. Power data is communicated between the power delivery unit and the rechargeable battery by: 1) the power delivery unit adjusting the converted voltage, wherein the power data is expressed by plural voltage levels of the converted voltage; and/or 2) the rechargeable battery adjusting a battery input current, wherein the power data is expressed by plural current levels of the battery input current. At least one of the converted voltage, the converted current, the charging voltage, or the charging current is adjusted according to the power data.