Charger

• US 7,633,270 B2
• Filed: 05/07/2007
• Issued: 12/15/2009
• Est. Priority Date: 09/01/2006
• Status: Active Grant

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: Wang, Yi-Long, Wong, Shih-Fang
• Primary Examiner(s): Tso; Edward
• Assistant Examiner(s): Fantu; Yalkew
• Application Number:
  US11/744,892
• Publication Number:
  US 20080054854A1
• Time in Patent Office: 953 Days
• Field of Search: 320/162, 320/107, 320/1, 320/108, 320/109, 320/110
• US Class Current: 320/162
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A charger for charging a second battery is provided. The charger includes a charging circuit, a charging interface, the charger further comprise an audio interface, a switch and a sound output device. The switch used for connecting an audio interface to a charging circuit or a sound output device. When the sound output device connects to the audio interface, the sound output device plays the audio signals outputted by the audio player via the audio interface; when the charging circuit connected to the audio interface, the audio player output energy to the electronic device via the charging circuit and the charging interface, thereby charging the electronic device.

Claims

1. A charger comprising:

a charging circuit, a charging interface connected to an electronic device, and an audio interface being configured for connecting with an audio player to receive electrical energy or audio signals therefrom, wherein, the charger further comprises a switch and a sound output device, the switch is configured for switch the audio interface to connect with the charging circuit or with the sound output device;

the charging circuit comprises a converting circuit, a energy accumulating circuit, and an energy releasing circuit;

when the switch switches the audio interface to connect with the charging circuit, the converting circuit amplifies an alternating current (AC) audio voltage outputted by the audio player and rectifying the AC audio voltage into a direct current (DC) voltage;

the energy accumulating circuit accumulates the DC voltage, and the energy releasing circuit releases the electricity energy to the electronic device via the charging interface when the accumulated voltage value is equal to or greater than a predetermined voltage value;

when the switch switches the audio interface to connect with the sound output device, the sound output device receives the audio signals from the audio player and outputs the audio signals.

2. The charger as claimed in claim 1, wherein the charging circuit further comprises a detecting circuit and micro-control unit, the detecting circuit is used for detecting a voltage value of the accumulated DC voltage and supplying the detected voltage value to the micro-control unit (MCU);

the MCU compares the detected voltage value with a predetermined voltage value and outputs a control signal corresponding to the comparison result to the energy releasing circuit;

the control signal is used for controlling the energy releasing circuit.

3. The charger as claimed in claim 2, wherein if the detected voltage value is equal to or greater than the pre-determined voltage value, the control signal is a release signal for signaling the energy releasing circuit to release energy to the charging interface.

4. The charger as claimed in claim 2, wherein if the detected voltage value is less than the predetermined voltage value, the control signal is an inhibit signal for signaling the energy releasing circuit to stop releasing energy to the charging interface.