Battery Control Circuit With Independent Bare-Cell Charging Links
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Solution Overview
Problem
Conventional mobile terminals with multiple batteries connected in series or parallel face issues such as bias current and bias voltage problems, requiring uniform batteries and significant safety margins, which limits the full utilization of battery performance.
Innovation Solution
A battery control circuit with a processor and charging links that determine charging policies based on the type of bare cells, using charging management chips and coulometers to manage input currents and voltages, allowing independent control of each bare cell for reduced bias issues and optimized performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple batteries are connected in series or parallel for charging and discharging, then the battery capacity and power are increased, but bias current and bias voltage problems occur
Solution Approach 1:
The patent divides the battery system into multiple independent charging links, with each link containing a charging management chip that independently manages one or more batteries. This segmentation allows each battery to be charged independently according to its own state, eliminating the bias current and voltage problems that occur when batteries are charged in series or parallel without individual control.
2Reliability
If strict selection and high safety margins are imposed on batteries, then battery safety is ensured, but battery performance cannot be fully utilized
Solution Approach 1:
The patent dynamically adjusts charging parameters (current, voltage, power) for each battery based on real-time monitoring of battery state, type, and charging link conditions. This allows the system to optimize charging performance for each battery without compromising safety, eliminating the need for conservative uniform charging margins that limit performance utilization.
3Ease of operation
If a single charging mode is used for multiple batteries, then charging simplicity is maintained, but charging efficiency and battery performance are limited
Solution Approach 1:
The patent implements dynamic charging control where the processor automatically selects and adjusts charging modes (constant current, constant voltage, combined mode) for each charging link based on battery state, capacity, and type. This dynamic adaptation enables efficient charging for diverse battery configurations without requiring manual intervention or complex user control.
Data Source
AI summary
This application provides a battery control circuit, an electronic device, and a charging control method. The battery control circuit is configured to control charging and discharging of a battery. The battery control circuit includes a processor and one or more charging links. The battery includes one or more bare cells. The charging link is electrically connected to the bare cell and the processor. The processor determines, based on a type of the bare cell, a charging policy to be performed by the charging link. In the foregoing design, several bare cells are integrated in one battery, so that different bare cells have independent charging and discharging functions.