Charging control circuit and mobile power supply
By using the comparison circuit and switching module of the charging control circuit, the power supply path of the load is controlled according to the external power supply voltage, which solves the problem of the mobile power bank display screen continuously consuming battery power and achieves the effect of saving battery power when connected to an external power source.
CN224401184UActive Publication Date: 2026-06-23NANJING KUKE ELECTRONIC TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING KUKE ELECTRONIC TECH CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
When a power bank is fully charged and has external power supply, the display screen continues to consume battery power, causing users to mistakenly believe that the battery is not fully charged.
Method used
A charging control circuit is adopted, which compares the input voltage of the external power supply with the reference voltage through a comparator circuit, controls the switching module to turn on or off, cuts off the battery power supply path, and supplies power to the load only through the external power supply.
Benefits of technology
When an external power source is connected and the battery is fully charged, this method avoids battery drain and prevents users from mistakenly believing the battery is not fully charged, thus saving battery power.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224401184U_ABST
Abstract
The utility model discloses a charging control circuit and portable power source. The charging control circuit includes: battery, switch module, comparison circuit, voltage conversion circuit and connector, the first input of comparison circuit is connected with the power port of connector, and the second end of comparison is connected with reference voltage, and the output of comparison circuit is connected with the control end of switch module, and comparison circuit is used for controlling the conduction or shutdown of switch module, the first end of switch module is connected with battery, and the second end of switch unit is connected with the input of voltage conversion circuit, the input of voltage conversion circuit is connected with the power port of connector, and the output of voltage conversion circuit is connected with load. The utility model discloses technical scheme can cut off the power supply loop of battery under the condition of having external power supply connection and the full charge of battery, does not consume the battery capacity, avoids the user misjudgment of the battery not full charge.
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