CHARGER

• US 20050269986A1
• Filed: 06/04/2004
• Published: 12/08/2005
• Est. Priority Date: 06/04/2004
• Status: Active Grant

• Current Assignee: C.O.S. Electrical Products Inc.
• Original Assignee: C.O.S. Electrical Products Inc.
• Inventors: Peng, Ta-Min
• Granted Patent: US 6,977,484 B1
• Time in Patent Office: Days
• US Class Current: 320/107
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A charger includes a choke coil and a choke iron core disposed on a plane surface of heat dissipating fins. Furthermore, a face plate, a control circuit board, a drive circuit board, the heat dissipating fins, a fan and a ventilation plate are separately series-connected in alignment and fitted on a base thereof. The electric power from a power supply input is transmitted to the drive circuit board through an input terminal, whereupon alternating current passes through a rectifier circuit and is converted into direct current thereat. Upon charging, results from a detector are transmitted to a microprocessor, which effectuates switch over to an output circuit through transistors, while diodes prevent current reflux. The electric power is then transmitted to a battery by means of a transformer coupled to an electric power terminal and further passing through one more rectifier circuit and a wave filter circuit.

Claims

1. A charger comprising a case, a base, a base plate, a face plate, a ventilation plate, a control circuit board, a drive circuit board, heat dissipating fins, a fan, an output terminal, and an input terminal;

a detector and a microprocessor are configured atop the control circuit board;

rectifier circuits, wave filter circuits, and a control circuit are configured atop the drive circuit board;

structural characteristics comprise a choke coil and a choke iron core lo disposed atop a plane surface of the heat dissipating fins;

the face plate, the control circuit board, the drive circuit board, the heat dissipating fins, the fan and the ventilation plate adopt a separately series-connected alignment and are installed atop the base thereof, whereupon the case is placed on top and screwed down with screws, and thereafter a base portion is screwed down by means of base screws penetrating the base plate;

characteristics of an electric circuit comprise an external power supply input transmitted to the drive circuit board through the input terminal, whereupon alternating current passes through a rectifier electric circuit and is converted into direct current thereat;

efficiency and stability of electric power is enhanced through impedance matching generated by way of the choke coil, whereafter the electric power is transmitted to the wave filter circuit, thus enabling the power supply to provide steady direct current therewith;

upon charging, the detector detects status of voltage, electric current and electric quantity within a battery, results of which are transmitted to the microprocessor, thereafter, the microprocessor selects charge mode for the battery and switches over to output circuit mode by means of transistors, while diodes prevent current reflux;

the electric power output is further stabilized through regulated integrated circuits, whereupon, in order to simultaneously prevent electric current generated by the battery from backing up to other electric circuits, the electric power further passes through the rectifier circuit and the wave filter circuit by way of a transformer coupled to an electric power terminal, which further enhances stability of the electric power, whereafter the electric power is transmitted to the battery;

upon inputting the electric power, efficiency and stability of charging the battery is enhanced through the impedance matching generated by way of the choke coil, and with the choke coil adopting a ferrite core as a configuration, anti-noise and high impedance matching of the choke coil is enhanced.

and wherein the detector is configured with functionality to detect voltage, electric current, and electric quantity therewith.

2. The charger according to claim 1, wherein the rectifier circuits are further configured as alternating current rectifiers, including half-wave rectification rectifier circuits, full-wave rectification rectifier circuits, bridge rectifier circuits and related alternating current rectifiers.

3. The charger according to claim 1, wherein the wave filter circuits are further configured as electric resistance-capacitance wave filters and related wave filters of electric power electronics.

4. The charger according to claim 1, wherein the microprocessor is further configured as an AVR Mega series and related microprocessors of automatic control electronic circuits.

5. The charger according to claim 1, wherein the transistors are further configured as FETs (Field-Effect Transistors), MOSs (Metal Oxide Semiconductors), BJTs (Bipolar Junction Transistors), and related transistors of electronic circuits.