Electronic apparatus, power feeding control method, and non-transitory recording medium

Patent metadata

Field	Value
Publication number	US-2021351596-A1
Application number	US-202117382790-A
Country	US
Kind code	A1
Filing date	Jul 22, 2021
Priority date	Mar 8, 2018
Publication date	Nov 11, 2021
Grant date	—

Abstract

An electronic timepiece includes a secondary battery, a first power feeder, a second power feeder, and a processor. The first power feeder feeds power to the secondary battery. The second power feeder feeds power to the secondary battery at a current larger than a current fed by the first power feeder. The processor determines remaining power of the secondary battery based on different references that are a reference of when the first power feeder is feeding the power to the secondary battery and a reference of when the second power feeder is feeding the power to the secondary battery.

First claim

What is claimed is:

1 . An electronic apparatus comprising:
a secondary battery; a first power feeder that feeds power to the secondary battery; a second power feeder that feeds power to the secondary battery at a current larger than a current fed by the first power feeder; and a processor is configured to:
in response to the first feeder deeds power to the secondary battery, select an operation mode of the electronic apparatus from plurality of operation mode based on a first reference value; and
in response to the second feeder deeds power to the secondary battery, select the operation mode from plurality of operation mode based on a second reference value, wherein the second reference value is different from the first reference value.

2 . The electronic apparatus according to claim 1 , wherein:
the processor is configured to:
in response to the first feeder feeds power to the secondary battery, select an operation mode of the electronic apparatus from plurality of operation mode based on a remaining power of the secondary battery wherein the remaining power is determined by the first reference value; and
in response to the second feeder deeds power to the secondary battery, select the operation mode from plurality of operation mode based on a remaining power of the secondary battery wherein the remaining power is determined by the second reference value.

3 . The electronic apparatus according to claim 1 , wherein:
the processor is configured to: detect a voltage of the secondary battery;
in response to the first feeder feeds power to the secondary battery, determine a remaining power of the secondary battery by comparing the detected voltage with a first reference value;
select the operation mode of the electronic apparatus from plurality of operation mode based on the remaining power;
in response to the second feeder feeds power to the secondary battery, determine the remaining power of the secondary battery by comparing the detected voltage with a second reference value that is higher than the first reference value; and
select the operation mode from plurality of operation mode based on a remaining power.

4 . The electronic apparatus according to claim 1 , wherein:
the power fed by the first power feeder is power generated by solar cells, and the power fed by the second power feeder is power supplied from an external charging device.

5 . The electronic apparatus according to claim 1 , wherein:
the external charging device is a wireless charging device.

6 . The electronic apparatus according to claim 1 , wherein each of the first reference value and the second reference value is associated with one of plural predetermined secondary battery temperature ranges.

7 . The electronic apparatus according to claim 1 , wherein:
the operation mode limits a function of the electronic apparatus based on the remaining power of the secondary battery.

8 . A power feeding control method comprising:
in response to a first feeder feeds power to a secondary battery, selecting an operation mode of an electronic apparatus from plurality of operation mode based on a first reference value; and in response to a second feeder feeds power to the secondary battery, selecting the operation mode from plurality of operation mode based on a second reference value that is different from the first reference value, wherein the second power feeder that feeds power to the secondary battery at a current larger than a current fed by the first power feeder.

9 . A non-transitory recording medium that stores a program for causing a computer of an electronic apparatus:
in response to a first feeder feeds power to a secondary battery, select an operation mode of an electronic apparatus from plurality of operation mode based on a first reference value; and in response to a second feeder feeds power to the secondary battery, select the operation mode from plurality of operation mode based on a second reference value that is different from the first reference value, wherein the second power feeder that feeds power to the secondary battery at a current larger than a current fed by the first power feeder.

Assignees

• Casio Computer Co Ltd

Inventors

• Ochiai Fumiaki
• Asami Yoshinori
• Kawaguchi Yohei
• Obata Katsuhiko

Classifications

• H02J7/92

  with prioritisation of loads or sources · CPC title

• H02J7/977

  of the battery · CPC title

• H02J7/90

  Regulation of charging or discharging current or voltage · CPC title

• H02J7/82 Primary

  Control of state of charge [SOC] · CPC title

• H02J7/96

  in response to battery voltage · CPC title