Mobile Terminal Switch Circuit for Safe Simultaneous Charging and Data
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Solution Overview
Problem
Mobile terminals face safety issues when attempting to simultaneously charge and transmit data due to the abnormal operation of chargers entering both BOOST and BUCK modes, leading to potential overcharge and battery damage, limiting the use of Y-shaped cables in products like mobile phones and tablets.
Innovation Solution
Incorporating a switch circuit with multiple switches and a processor to control the charging and data transmission paths, allowing the mobile terminal to safely support both functions by adjusting the switch status based on detection results from in-position and data detection circuits, ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Y-shaped cable is used to enable simultaneous charging and data transmission, then the mobile terminal can support both functions at the same time, but the charger may enter both BOOST and BUCK modes simultaneously causing safety issues and battery damage
Solution Approach 1:
The patent implements dynamic switching between charging and data transmission modes using a switch circuit controlled by the processor. The system dynamically adjusts the charger mode based on real-time detection of peripheral device connection status, preventing simultaneous BOOST and BUCK modes by sequentially transitioning between states according to detected connection sequences.
Solution Approach 2:
The patent employs feedback mechanisms through in-position detection circuits that monitor the connection status of peripheral devices. The processor receives detection results and adjusts the charger mode accordingly, creating a closed-loop control system that prevents unsafe simultaneous charging and data transmission by responding to real-time connection feedback.
2Adaptability or versatility
If the charger enters both BOOST and BUCK modes simultaneously to support charging and data transmission, then both functions can be performed, but this causes abnormal charger operation and potential overcharge
Solution Approach 1:
The patent applies preliminary anti-action by detecting peripheral device connections before the charger enters abnormal dual-mode operation. The in-position detection circuits monitor connection status in advance, and the processor preemptively switches charger modes to prevent simultaneous BOOST and BUCK states that would cause overcharge and battery damage.
Solution Approach 2:
The system performs preliminary detection of connection sequences using in-position detection circuits before the charger enters charging or data transmission modes. This preliminary action allows the processor to pre-configure the switch circuit and charger mode, ensuring safe operation before actual charging or data transmission begins.
Data Source
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AI summary
This application provides a mobile terminal. The mobile terminal includes a first interface, a second interface, a first in-position detection circuit, a second in-position detection circuit, a data detection circuit, a processor, a switch circuit, and a battery, where the first interface is electrically connected to the first in-position detection circuit, the second interface is electrically connected to the second in-position detection circuit, and the data detection circuit is electrically connected to the first interface and the second interface. The first in-position detection circuit, the second in-position detection circuit, and the data detection circuit are further electrically connected to the processor, the processor is further electrically connected to the switch circuit, and the switch circuit is further electrically connected to the first interface, the second interface, and the battery. The first interface and the second interface are configured to connect to a peripheral device. The first in-position detection circuit and the second in-position detection circuit are configured to detect whether the peripheral device is connected to the mobile terminal. The data detection circuit is configured to detect whether the peripheral device exchanges data with the mobile terminal. The processor is configured to control the switch circuit based on detection results of the first in-position detection circuit, the second in-position detection circuit, and the data detection circuit. The switch circuit is configured to control the first interface and the second interface to be separately conducted to the battery or the processor. Therefore, an interface is added to the mobile terminal, a switch circuit is added to the mobile terminal, and a charging path and a data transmission path are adjusted based on a switch status of the switch circuit. In this way, the mobile terminal can simultaneously support charging and data transmission while ensuring safety, which resolves a problem that charging and data transmission cannot be performed safely at the same time in the mobile terminal.