Battery Authentication via Controlled Charging Current
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Solution Overview
Problem
Electronic devices with chargeable batteries face challenges in authenticating batteries when using power from unidentified external sources, as the authentication process can be incomplete due to varying power supply capabilities and responsiveness.
Innovation Solution
The electronic device includes a charging unit, an authentication unit, and a control unit that charges the battery with a current not exceeding a first value until the voltage reaches a predetermined level, allowing the authentication unit to operate on battery power, thereby ensuring stable battery authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device uses an external power source to charge the battery to activate the internal circuit for authentication, then the authentication can be performed when the battery is fully discharged, but the authentication cannot be normally completed due to varying power supply capability and load responsiveness of the external power source
Solution Approach 1:
The patent applies preliminary action by performing a preliminary charging process to raise the battery voltage to a predetermined level before authentication. This preliminary charge ensures the battery has sufficient voltage to power the authentication circuit, eliminating the need to rely on external power source stability during authentication. The control unit controls the charging current to gradually increase battery voltage to the required threshold, creating a stable foundation for subsequent authentication operations.
2Productivity
If the charging current is increased to charge the battery faster, then the charging speed improves, but the battery voltage may not reach the stable predetermined level needed for reliable authentication
Solution Approach 1:
The patent applies dynamics by dynamically adjusting the charging current based on real-time battery voltage feedback. The control unit monitors battery voltage during charging and adjusts the charging current accordingly to ensure the voltage reaches and stabilizes at the predetermined level. This dynamic control allows efficient charging while guaranteeing the battery achieves the required voltage threshold for reliable authentication, balancing charging speed with authentication reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables stable battery authentication by controlling the charging current and switching to battery power once the voltage reaches a specific level, reducing the influence of external power noise and ensuring successful battery verification.
Implementation Method 1
a charging unit that charges a battery using power from an external power source
Implementation Method 2
a detection unit that detects a voltage of the battery
Data Source
AI summary
An electronic device includes a charging unit that charges a battery using power from an external power source, an authentication unit that performs authentication to determine whether the battery is a predetermined battery, a detection unit that detects a voltage of the battery, and a control unit that causes the charging unit to charge the battery with a current not more than a first current value until the voltage of the battery reaches a first predetermined value and causes the authentication unit to operate on power from the battery when the voltage of the battery reaches the first predetermined value. When the voltage of the battery has reached the first predetermined value, the control unit causes the authentication unit to authenticate the battery.