Power Bank Automatic Charging Detection Circuit
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Solution Overview
Problem
Conventional power banks often fail to automatically detect and initiate charging when using charging cables without a ground signal function, leading to inconvenience for users.
Innovation Solution
A power bank with automatic detection capability, comprising a battery unit, control unit, input unit, output unit, starting unit, and detecting unit, which senses signals from the output unit to control the battery's charging or discharging state, allowing it to charge external devices using either charging cables with or without a ground signal function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a power bank uses a charging cable without ground signal function, then the power bank can be used with more cable types, but the power bank cannot automatically detect and initiate charging
Solution Approach 1:
The patent introduces a detecting unit as an intermediary component that senses whether an external device is connected to the power bank. This detecting unit acts as a mediator between the connection status and the control unit, enabling automatic charging initiation even when using cables without ground signal function. The detecting unit generates a detection signal upon sensing connection, which triggers the control unit to start charging, thus resolving the contradiction between cable compatibility and automatic detection capability.
2Ease of operation
If a power bank continuously discharges when unused, then charging is always ready when needed, but battery capacity is continuously consumed
Solution Approach 1:
The patent implements a dynamic state transition mechanism where the power bank switches between dormant state and charging state based on real-time connection detection. When no device is connected, the power bank enters a dormant state with minimal energy consumption. When the detecting unit senses a connection, the control unit transitions the power bank to charging state, enabling immediate charging. This dynamic adaptation resolves the contradiction between charging readiness and energy conservation.
Solution Approach 2:
The detecting unit performs preliminary detection of connection status before charging initiation. This preliminary action allows the system to prepare for charging only when necessary, avoiding continuous discharge. The detecting unit is always monitoring connection status, so when a device is connected, the charging can be initiated immediately without delay, thus achieving both readiness and energy efficiency.
Data Source
AI summary
A power bank with automatic detection for charging capability includes a battery unit, a control unit connected to the battery unit, an input unit, at least one output unit, a starting unit and a detecting unit. The input unit is connected to the control unit. The input unit is used for being connected with an external power source. The at least one output unit is connected to the control unit. The starting unit is connected to the control unit and the at least one output unit. The starting unit is in a grounded state to form a current loop. The detecting unit is connected to the control unit and the at least one output unit. The detecting unit is used for sensing whether a signal is transmitted from the at least one output unit.