Low voltage auto-interruption device of car battery

• US 20040229110A1
• Filed: 08/06/2003
• Published: 11/18/2004
• Est. Priority Date: 05/15/2003
• Status: Abandoned Application

• Current Assignee: Tsung-Jung Tsai
• Original Assignee: Tsung-Jung Tsai
• Inventors: Tsai, Tsung-Jung
• Application Number:
  US10/634,673
• Publication Number:
  US 20040229110A1
• Time in Patent Office: Days
• US Class Current: 429/61
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: H01M 10/42 Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells H01M10/60 takes precedence
• CPC Class Codes: H02J 2310/46 for ICE-powered road vehicles
• CPC Class Codes: H02J 7/0032 disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A low voltage auto-interruption device of a car battery comprises a voltage detection and interruption device. The voltage detection and interruption device is installed between a power consuming device in a car, a battery for supplying power to the power consuming device; and a switch of the power consuming device. When a voltage of the battery is lower than a preset value, the voltage detection and interruption device interrupts a power of the power consuming device. The voltage detection and interruption device includes a high voltage comparator, a low voltage comparator and an interruption control circuit. The power consuming device is one selected from headlights, air cleaners fog lights, DVD drives, VCD drives, liquid crystal TVs, Audio devices, car used players, Kara OK, and amplifiers.

Claims

1. A low voltage auto-interruption device of a car battery comprising a voltage detection and interruption device;

the voltage detection and interruption device being installed between a power consuming device in a car, a battery for supplying power to the power consuming device; and

a switch of the power consuming device;

when a voltage of the battery is lower than a preset value, the voltage detection and interruption device interrupting a power supply of the power consuming device.

2. The low voltage auto-interruption device of a car battery as claimed in claim 1, wherein the voltage detection and interruption device includes a high voltage comparator, a low voltage comparator and an interruption control circuit.

3. The low voltage auto-interruption device of a car battery as claimed in claim 1, wherein the power consuming device is a headlight of the car.

4. The low voltage auto-interruption device of a car battery as claimed in claim 1, wherein the power consuming device is one selected from air cleaners fog lights, DVD drives, VCD drives, liquid crystal TVs, Audio devices, car used players, Kara OK, and amplifiers.