DETECTING DEVICE AND METHOD FOR DETECTING BATTERY STORAGE CAPACITY

• US 20120126819A1
• Filed: 04/26/2011
• Published: 05/24/2012
• Est. Priority Date: 11/24/2010
• Status: Abandoned Application

• Current Assignee: FIH (Hong Kong) Limited (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Foxconn Communication Technology Corp. (Hon Hai Precision Industry Co., Ltd.)
• Inventors: LIU, CHENG-PING, WU, CHIA-FENG
• Application Number:
  US13/094,765
• Publication Number:
  US 20120126819A1
• Time in Patent Office: Days
• US Class Current: 324/427
• 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: Y02E 60/10 Energy storage using batteries

Abstract

A detecting device used to detect storage capacity of a battery is connected to a load by a first output terminal and a second output terminal. The detecting device includes a switch unit, a detecting unit, and a control unit. The switch unit is connected between the first and second output terminals. The detecting unit is connected to the first and second output terminals. The detecting unit detects output voltage and current of the battery when the switch is turned on and off and obtains an internal resistance of the battery according to the detected output voltage and current. The control unit controls the switch unit to turn on and off and compares the detected resistance with a reference resistance, and determines the storage capacity of the battery according to the comparison.

Claims

1. A detecting device used to detect storage capacity of a battery which is connected to a load by a first output terminal and a second output terminal;

the detecting device comprising;

a switch unit connected between the first output terminal and the second output terminal;

a detecting unit connected to the first output terminal and the second output terminal and detecting output voltage and current of the battery when the switch is turned on and off and obtaining an internal resistance of the battery according to the detected output voltage and current; and

a control unit controlling the switch unit to turn on and off and comparing the detected resistance with a reference resistance, and determining the storage capacity of the battery according to the comparison.

2. The detecting device as claimed in claim 1, wherein the switch unit includes a switch and a resistor connected in series.

3. The detecting device as claimed in claim 2, wherein when the switch is turned off, the battery forms a circuit loop with the load.

4. The detecting device as claimed in claim 2, wherein when the switch is turned on, the resistor is connected in parallel with the load.

5. The detecting device as claimed in claim 1, further includes a display unit connected to the control unit to display the storage capacity.

6. A method for detecting storage capacity of a battery which is connected to a load by a first output terminal and a second output terminal;

comprising;

providing a switch unit connected to the first output terminal and the second output terminal;

detecting output voltage and current of the battery when the switch unit is turned on and off;

obtaining an internal resistance of the battery according to the detected output voltage and current;

comparing the detected resistance with a reference resistance; and

determining the storage capacity of the battery according to the comparison.

7. The method as claimed in claim 6, wherein the switch unit includes a switch and a resistor connected in series.

8. The method as claimed in claim 7, wherein when the switch is turned off, the battery forms a circuit loop with the load.

9. The method as claimed in claim 7, wherein when the switch is turned on, the resistor is connected in parallel with the load.

10. The method as claimed in claim 6, further includes displaying the storage capacity data.