# US 2022/0037901 A1 · Power bank with automatic detection for charging capability

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- Number: US 2022/0037901 A1
- Document ID: US20220037901A1
- Status: Published application
- Kind: A1
- Application number: 17/237,022
- Filed: 2021-04-21
- Published: 2022-02-03
- Earliest claimed: 2020-07-28
- Assignees: Cheng Uei Precision Industry Co., Ltd.
- Applicants: Cheng Uei Precision Industry Co., LTD.
- Inventors: HUI-LIN LAI; JUN-YEH LIU; WEN-BING HSU
- Web page: https://patentgrep.com/patent/US20220037901A1

## CPC

- H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones
- H02J 7/80: including monitoring or indicating arrangements
- H02J 7/82: Control of state of charge [SOC]
- H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)}
- H02J 2207/20: Charging or discharging characterised by the power electronics converter
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

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.

## Claims

### Claim 1

A power bank with automatic detection for charging capability, comprising:
a battery unit used for storing and releasing electricity;
a control unit connected to the battery unit, when the battery unit is charged or discharged, a charged process or a discharged process of the battery unit being controlled through the control unit, the control unit having a function of controlling a voltage condition of the battery unit during the charged process or the discharged process of the battery unit;
an input unit connected to the control unit, the input unit being used for being connected with an external power source, so that an external current entering the battery unit for proceeding to charge the battery unit;
at least one output unit connected to the control unit, the at least one output unit being used for being connected with an external device, and the at least one output unit providing electric power in the battery unit for the external device;
a starting unit connected to the control unit and the at least one output unit, the starting unit being in a grounded state to form a current loop which is provided for the battery unit to proceed to discharge; and
a detecting unit connected to the control unit and the at least one output unit, the detecting unit being used for sensing whether a signal is transmitted from the at least one output unit, so that the control unit is able to control the battery unit to enter a discharged state.

### Claim 2 (depends on 1)

The power bank with automatic detection for charging capability as claimed in claim 1, wherein the control unit includes a micro-controller.

### Claim 3 (depends on 2)

The power bank with automatic detection for charging capability as claimed in claim 2, wherein the control unit includes a step-up circuit and a step-down circuit, the step-up circuit is connected to the micro-controller, the step-down circuit is connected to the micro-controller.

### Claim 4 (depends on 3)

The power bank with automatic detection for charging capability as claimed in claim 3, wherein the step-up circuit is connected between the at least one output unit and the battery unit.

### Claim 5 (depends on 3)

The power bank with automatic detection for charging capability as claimed in claim 3, wherein the step-down circuit is connected between the input unit and the battery unit.

### Claim 6 (depends on 1)

The power bank with automatic detection for charging capability as claimed in claim 1, wherein the detecting unit is a reset IC (Integrated Circuit).

### Claim 7

A power bank with automatic detection for charging capability, comprising:
a battery unit used for storing and releasing electricity;
a control unit connected to the battery unit, when the battery unit is charged or discharged, a charged process or a discharged process of the battery unit being controlled through the control unit, the control unit having a function of controlling a voltage condition of the battery unit during the charged process or the discharged process of the battery unit;
an input unit connected to the control unit, the input unit being used for being connected with an external power source, so that an external current entering the battery unit for proceeding to charge the battery unit;
at least one output unit connected to the control unit, the at least one output unit being used for being connected with an external device, and the at least one output unit providing electric power in the battery unit for the external device;
a starting unit connected to the control unit and the at least one output unit, the starting unit being in a grounded state to form a current loop which is provided for the battery unit to proceed to discharge; and
a detecting unit connected to the control unit and the at least one output unit, the detecting unit being used for sensing whether a signal is transmitted from the at least one output unit, so that the control unit is able to control the battery unit to enter a discharged state;
wherein the power bank with automatic detection for charging capability is connected to the external device by virtue of a charging cable with a ground signal function or the charging cable without the ground signal function to charge the external device.

### Claim 8

A power bank with automatic detection for charging capability, comprising:
a battery unit used for storing and releasing electricity;
a control unit connected to the battery unit, when the battery unit is charged or discharged, a charged process or a discharged process of the battery unit being controlled through the control unit, the control unit having a function of controlling a voltage condition of the battery unit during the charged process or the discharged process of the battery unit, at the same time, when the power bank with automatic detection for charging capability is unused, the control unit making the power bank with automatic detection for charging capability enter a dormant state so as to discontinue a discharge action of the battery unit to maintain an electric quantity in the battery unit;
an input unit connected to the control unit, the input unit being used for being connected with an external power source, so that an external current enters the battery unit for proceeding to charge the battery unit;
at least one output unit connected to the control unit, the at least one output unit being used for being connected with an external device, and the at least one output unit providing electric power in the battery unit for the external device;
a starting unit connected to the control unit and the at least one output unit, the starting unit being in a grounded state to form a current loop which is provided for the battery unit to proceed to discharge; and
a detecting unit connected to the control unit and the at least one output unit, the detecting unit being used for sensing whether a signal is transmitted from the at least one output unit, so that the control unit is able to control the battery unit to enter a discharged state.