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# Make a cellphone a charger

IP.com Disclosure Number: IPCOM000240644D
Publication Date: 2015-Feb-16
Document File: 3 page(s) / 74K

## Publishing Venue

The IP.com Prior Art Database

## Abstract

Currently smart phones usually run out of battery. When a couple go out together, one of their cellphones may run out of battery and the other remain fully charged. If they don't have a charger, it is annoying. But if the other's cellphone can act as a charger, it can be very useful. Make cellphone a charger, by physically installing in the cellphone a voltage increasing circuit. At the software level, configuring a logistic to allow the users to choose to charge other cellphones or to be charged.

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Make a cellphone a charger

Currently almost everybody uses cellphones. However they often run out of battery.

The normal solutions is to charge the cellphones with a mobile power.

But sometimes the mobile power is heavy and it's not easy to carry. Or people simply forget to carry a mobile power.

When one person runs out of battery, they can use other person's cellphone to charge their cellphone. This can be useful when one couple go out together.

When the boy/girl runs out of battery, he/she can use his/her companion's cellphone to charge his/her cellphone.

Make cellphones act as a charger, by physically install a special circuit within the cellphone.

Install in the cellphone an increasing voltage circuit and a software level logistic.

When the normal wire is plugged in, and connected to another device (a charger or some device to be charged),

Users can select to charge the other device or accept the charge from the other device.

At the hardware level: make a special increasing voltage circuit(DC-DC voltage increasing) within the cell phones.

For example, a DC-DC increasing circuit may look like this:(there are a lot kind of DC-DC voltage increasing circuit).

In the below picture, 3.3 V is the input voltage. It is just 3.3V. However by using some hardware( here CS5171/3 and a MBRS120T3 as example, but there can be candidates) the output

can be 5V.

In the cellphone, this kind of technology can be used, as the cellphone has a battery and the battery voltage can be...