Charger for cellular phone

• US 20050024011A1
• Filed: 07/28/2003
• Published: 02/03/2005
• Est. Priority Date: 07/28/2003
• Status: Abandoned Application

• Current Assignee: Inventec Appliances Corporation (Inventec Corporation)
• Original Assignee: Inventec Appliances Corporation (Inventec Corporation)
• Inventors: Chen, Yu-Sheng
• Application Number:
  US10/627,811
• Publication Number:
  US 20050024011A1
• Time in Patent Office: Days
• US Class Current: 320/107
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034

Abstract

The present invention is to provide a charger for cellular phone comprising a body having a well and a battery compartment on its opposite surfaces, at least one pair of positive and negative terminals in the battery compartment, at least one pair of electrical contacts on the well and a charging circuit inside the body being electrically coupled to and the electrical contacts and terminals respectively. When the cellular phone is rested on the well, charging plugs of the cellular phone are electrically coupled to the electrical contacts. Thus, the charging circuit is adapted to automatically supply power from either the external power source or the cells (or batterys) received in the battery compartment to charge at least one electrical energy storage element in the cellular phone.

Claims

1. A charger for a cellular phone, the charger including a body comprising:

a well on one surface of the body for enabling a cellular phone to rest thereon;

at least a pair of electrical contacts in the well for electrically connecting with the cellular phone;

a battery compartment on the opposite other surface of the body for receiving a plurality of cells;

at least one pair of positive and negative terminals in the battery compartment for electrically connecting with the cells;

a connector having one end exposed on the body for electrically connecting with an external power source; and

a charging circuit inside the body, the charging circuit being electrically coupled to the electrical contacts, the positive and negative terminals, and the other end of the connector respectively for supplying power from either the external power source or the cells to charge at least one electrical energy storage element in the cellular phone.

2. The charger of claim 1, wherein the charging circuit comprises a switch for switching the power charging the cellular phone from either the external power source or the cells.

3. The charger of claim 1, further comprising an internal charging loop between the charging circuit and the terminals, enabling the charging circuit to supply power from the external power source to charge the cells.