Battery Pack Charge Control Circuit for Stable Charging
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Solution Overview
Problem
Existing battery packs lack efficient control mechanisms for stable charging, as they rely solely on internal protection circuits and control units, which can lead to unstable charging processes when connected to various charging sources or devices.
Innovation Solution
A battery pack with a charge control circuit that receives control signals from external sources, utilizing a first switching device to manage charging current and an anti-reverse charging circuit for safety, along with a battery management system (BMS) for monitoring and balancing, allowing external devices or chargers to control charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery packs rely solely on internal protection circuits and control units for charging control, then the device structure remains simple, but the charging process becomes unstable when connected to various charging sources or devices
Solution Approach 1:
The patent combines the charge control circuit with the existing protection circuit in the battery pack, integrating multiple functions into a unified control system. This merging approach enables stable charging control while avoiding the need for completely separate control units, thus improving reliability without proportionally increasing device complexity.
Solution Approach 2:
The charge control circuit is designed to receive and process control signals from various external sources (chargers, electronic devices, wireless power systems), making it a universal interface that adapts to different charging scenarios. This multi-functionality allows the same circuit to handle diverse charging protocols and sources, ensuring stable charging across different applications.
2Reliability
If external control signals are integrated into the battery pack for charging control, then charging stability improves, but the device complexity increases
Solution Approach 1:
The charge control circuit acts as an intermediary between external control signals and the battery cell, translating and regulating incoming signals into appropriate charging parameters. This intermediary function stabilizes the charging process by filtering and standardizing external inputs, while the circuit's modular design keeps the added complexity manageable and organized.
3Manufacturing precision
If a first switching device is added to control charging current flow, then charging control precision improves, but the device complexity increases
Solution Approach 1:
The first switching device is strategically positioned within the charge control circuit to specifically control the charging current path. By applying control precision only where needed (in the charging current flow path) rather than throughout the entire circuit, the patent achieves high charging control precision while minimizing the overall complexity increase. The switching device operates locally to regulate current without requiring complex modifications to other circuit portions.
Data Source
AI summary
A battery pack and a method of controlling the same are disclosed. According to some aspects, the battery pack includes at least one chargeable battery cell, and a charge control circuit that receives a control signal from an external source. The charge control circuit is configured to control charging of the battery cell according to the control signal. As a result, a charging operation may be stably performed.