Charging device with battery capacity analysis function

• US 20090033284A1
• Filed: 07/30/2007
• Published: 02/05/2009
• Est. Priority Date: 05/04/2007
• Status: Abandoned Application

• Current Assignee: Iwei Technology Co., Ltd., Sunpower Corporation (Totalenergies Se)
• Original Assignee: Iwei Technology Co., Ltd.
• Inventors: Chang, I-Chang
• Application Number:
  US11/882,080
• Publication Number:
  US 20090033284A1
• Time in Patent Office: Days
• US Class Current: 320/131
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G01R 31/389 Measuring internal impedance, internal conductance or related variables
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H02J 7/00306 Overdischarge protection
• CPC Class Codes: H02J 7/0031 using battery or load disconnect circuits H02J9/002 takes precedence
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention provides a charging device with battery capacity analysis function, wherein a charging device includes a control unit, a computing unit, a display unit, a charging unit and a discharging unit. When the charging unit is connected to and charging a battery, the control unit determines whether the power of the battery is fully charged or not, and after the battery is fully charged, then the charging unit stops charging, and at the same time the discharging unit implements discharging of the battery. Moreover, the control unit controls stopping of electric discharge after the battery power is exhausted, which enables the computing unit to determine and calculate actual effective capacity of the battery, and enables the display unit to display the calculated capacity data, after which fully charging of the battery continues, thereby enabling the charging device to achieve battery capacity analysis and charging effectiveness.

Claims

1. A charging device with battery capacity analysis function, wherein a charging device comprises a control unit, a computing unit, a display unit, a charging unit and a discharging unit;

when the charging unit is connected to and charging a battery, the control unit determines whether the battery is fully charged or not;

after the battery is fully charged, then charging is stopped and the discharging unit carries out discharging of the battery, and the control unit controls stopping of electric discharge after the power of the battery is exhausted, which enables the computing unit to calculate actual effective capacity of the battery, whereupon the calculated actual effective capacity data is displayed by the display unit, thereby enabling the charging device to achieve battery capacity analysis and charging effectiveness.

2. The charging device with battery capacity analysis function according to claim 1, wherein the display unit is configured with an LCD (liquid crystal display) display device, an LED (light-emitting diode) display device, digital type light-emitting diodes and related devices provided with the ability to display data.

3. The charging device with battery capacity analysis function according to claim 1, wherein the charging device further comprises a memory unit, which implements functionality to memorize capacity after charging and discharging of a battery.

4. The charging device with battery capacity analysis function according to claim 1, wherein built-in consumption load of the discharging unit is configured as loads able to consume power, including resistances, transistors, MOS (Metal Oxide Semiconductor), electronic devices, light bulbs, motors, and so on.

5. The charging device with battery capacity analysis function according to claim 1, wherein the control unit and the computing unit are integrated to form a module and integrated circuit (IC), thereby effectively increasing connections and application of related circuits.