Dynamic Charging Mode Switching for Charger Compatibility

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Solution Overview

Problem

Electronic equipment often supports only one of the two Quick Charge (QC) methods, high-voltage charge or direct charge, limiting compatibility with both methods simultaneously.

Innovation Solution

The electronic equipment includes a processor, communication control chip, direct charging control switch, charging chip, and physical charging interface, allowing the processor to determine the type of charger and switch between direct charging mode and other charging modes based on the charger's capabilities, using protocols like Power Delivery (PD) for compatibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If electronic equipment supports only one Quick Charge method (high-voltage charge or direct charge), then the charging speed is optimized for that specific method, but the compatibility with different charger types is limited

Engineering Contradiction:
Improvecharging speedVSAvoidcompatibility with different charger types
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic charging mode switching by detecting charger type through communication protocols and automatically selecting between direct charge mode and high-voltage charge mode. The system transitions from a static single-mode design to a dynamic multi-mode system that adapts charging parameters based on real-time charger identification, thereby achieving both high charging speed and broad compatibility

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes charging parameters (voltage, current, and mode selection) based on detected charger type. When a direct-charge-capable charger is detected, the system switches to direct charge mode with appropriate current parameters; when a high-voltage charger is detected, it switches to high-voltage charge mode with corresponding voltage parameters. This parameter adaptation enables compatibility across different charger types while maintaining optimal charging performance

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If electronic equipment adds support for multiple Quick Charge methods, then the compatibility with different charger types is improved, but the device complexity increases

Engineering Contradiction:
Improvecompatibility with different charger typesVSAvoidcharging system structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal charging control architecture that can handle multiple charging methods through a unified detection and control framework. The communication control chip and processor work together to identify charger type and route to the appropriate charging mode, making the system multi-functional without requiring separate independent circuits for each charging method. This universal approach reduces overall system complexity compared to having dedicated hardware for each charging type

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces a communication control chip as an intermediary between the processor and charging circuits. This intermediary handles the complex tasks of charger detection, protocol communication, and mode selection, thereby simplifying the processor's burden and organizing the charging system's complexity into manageable modular components. The communication control chip acts as a mediator that translates charger characteristics into appropriate charging actions

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11451077B2Electronic equipment, charger and charging method
Publication Date: 2022.09.20 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • US11451077B2 patent drawing
  • US11451077B2 patent drawing
  • US11451077B2 patent drawing

AI summary

An electronic equipment, a charger and a charging method are provided. The charging method includes that: a processor determines a type of a charger coupled with a physical charging interface through a communication control chip; when the charger is a preset charger, the processor sets a direct charging control switch into an ON state, and controls the charger to perform charging according to a first charging mode; and when the charger is not the preset charger, the processor sets the direct charging control switch into an OFF state, and performs charging through charging chips according to a second charging mode.