Scheme applied into electronic device and capable of measuring resistance parameter(s) associated with battery cell

Patent metadata

Field	Value
Publication number	US-9864015-B2
Application number	US-201514617949-A
Country	US
Kind code	B2
Filing date	Feb 10, 2015
Priority date	Feb 21, 2014
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A method applied into an electronic device and capable of measuring at least one resistance parameter includes: launching a program/application on the electronic device; and using the program/application to measure the at least one resistance parameter that is at least associated with a battery cell connected to and used for providing power to the electronic device.

First claim

What is claimed is:

1. A method applied into an electronic device and capable of measuring at least one resistance parameter, comprising:
launching a program/application on the electronic device;
using the program/application to automatically measure an internal voltage level of a battery cell, a capacity of the battery cell, and the at least one resistance parameter that is at least associated with the battery cell connected to and used for providing power to the electronic device; and
performing power throttling of the electronic device based on the internal voltage level of the battery cell, the capacity of the battery cell, and the at least one resistance parameter.

2. The method of claim 1 , wherein the at least one resistance parameter comprises at least one of an alternating current (AC) resistance and a direct current (DC) resistance.

3. The method of claim 1 , wherein the at least one resistance parameter is further associated with a trace connected between the battery cell and the electronic device.

4. The method of claim 1 , wherein the electronic device is one of a mobile device, a mobile phone, a personal digital assistant (PDA) device, a laptop, and a personal computer.

5. The method of claim 1 , wherein the at least one resistance parameter comprises an AC resistance, and the step of using the automatic program/application to automatically measure the at least one resistance parameter comprises:
measuring a first set of voltage and current for the battery cell;
generating a current pulse change on the battery cell; and
measuring a second set of voltage and current for the battery cell after the current pulse change has been generated; and
calculating the AC resistance for the battery cell according to the first set of current and voltage and the second set of current and voltage.

6. The method of claim 5 , wherein the step of generating the current pulse change on the battery cell comprises:
enabling at least one of a dummy load, a normal load, and a charging operation to generate the current pulse change.

7. The method of claim 1 , wherein the at least one resistance parameter comprises a DC resistance, and the step of using the program/application to automatically measure the at least one resistance parameter comprises:
discharging the battery cell by a specific discharging current for a second time period;
measuring a first voltage level for the battery cell after the second time period;
waiting for a first time period after the second time period; and
measuring a second voltage level for the battery cell after the first time period;
deriving the DC resistance for the battery cell according to the first voltage level, the specific discharging current, and the second voltage level.

8. An electronic device capable of measuring at least one resistance parameter, comprising:
a software module, for launching a program/application on the electronic device; and
a processing circuit, for using the program/application to automatically measure an internal voltage level of a battery cell, a capacity of the battery cell, and the at least one resistance parameter that is at least associated with the battery cell connected to and used for providing power to the electronic device, and for performing power throttling of the electronic device based on the internal voltage level of the battery cell, the capacity of the battery cell, and the at least one resistance parameter.

9. The electronic device of claim 8 , wherein the at least one resistance parameter comprises at least one of an alternating current (AC) resistance and a direct current (DC) resistance.

10. The electronic device of claim 8 , wherein the at least one resistance parameter is further associated with a trace connected between the battery cell and the electronic device.

11. The electronic device of claim 8 , wherein the electronic device is one of a mobile device, a mobile phone, a personal digital assistant (PDA) device, a laptop, and a personal computer.

12. The electronic device of claim 8 , wherein the at least one resistance parameter comprises an AC resistance, and the processing circuit is arranged for:
measuring a first set of voltage and current for the battery cell;
generating a current pulse change on the battery cell; and
measuring a second set of voltage and current for the battery cell after the current pulse change has been generated; and
calculating the AC resistance for the battery cell according to the first set of current and voltage and the second set of current and voltage.

13. The electronic device of claim 12 , wherein the processing circuit is arranged for enabling at least one of a dummy load, a normal load, and a charging operation to generate the current pulse change.

14. The electronic device of claim 8 , wherein the at least one resistance parameter comprises a DC resistance, and the processing circuit is arranged for:
discharging the battery cell by a specific discharging current for a second time period;
measuring a first voltage level for the battery cell after the second time period;
waiting for a first time period after the second time period; and
measuring a second voltage level for the battery cell after the first time period;
deriving a DC resistance for the battery cell according to the first voltage level, the specific discharging current, and the second voltage level.

15. A non-transitory computer readable medium comprising multiple instructions upon executing these instructions stored in a computer readable device, upon executing these instructions, a computer performing the following steps:
launching a program/application on the electronic device;
using the program/application to automatically measure an internal voltage level of a battery cell, a capacity of the battery cell, and the at least one resistance parameter that is at least associated with the battery cell connected to and used for providing power to the electronic device; and
performing power throttling of the electronic device based on the internal voltage level of the battery cell, the capacity of the battery cell, and the at least one resistance parameter.

16. The non-transitory computer readable medium of claim 15 , wherein the at least one resistance parameter comprises at least one of an alternating current (AC) resistance and a direct current (DC) resistance.

17. The non-transitory computer readable medium of claim 15 , wherein the at least one resistance parameter comprises an AC resistance, and the step of using the program/application to automatically measure the at least one resistance parameter comprises:
measuring a first set of voltage and current for the battery cell;
generating a current pulse change on the battery cell; and
measuring a second set of voltage and current for the battery cell after the current pulse change has been generated; and
calculating the AC resistance for the battery cell according to the first set of current and voltage and the second set of current and voltage.

18. The non-transitory computer readable medium of claim 17 , wherein the step of generating the current pulse change on the battery cell comprises:
enabling at least one of a dummy load, a normal load, and a charging operation to generate the current pulse change.

19. The non-transitory computer readable medium of claim 15 , wherein the at least one resistance parameter comprises a DC resistance, and the step of using the program/application to automatically measure the at least one resistance parameter comprises:
dischargin

Assignees

• Mediatek Inc

Inventors

• Wu Jui-Chi
• Lee Chi-Ming
• Chou Kai-Hsun

Classifications

• G01R31/385

  Arrangements for measuring battery or accumulator variables (for monitoring G01R31/382) · CPC title

• G01R31/389 Primary

  Measuring internal impedance, internal conductance or related variables · CPC title

• G01R31/3842

  combining voltage and current measurements · CPC title

• G01R31/3662 Primary

  Physics · mapped topic

• G01R31/3624

  Physics · mapped topic