Method for server apparatus to detect abnormality in electrical-power storage device

Patent metadata

Field	Value
Publication number	US-10749362-B2
Application number	US-201615221689-A
Country	US
Kind code	B2
Filing date	Jul 28, 2016
Priority date	Aug 28, 2015
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A server apparatus obtains, via an information terminal wirelessly connected to an electrical-power storage device, a value indicating a state of the electrical-power storage device at an end of use of electric equipment having the electrical-power storage device. The server apparatus further obtains, via the information terminal wirelessly connected with the electrical-power storage device, a value indicating the state of the electrical-power storage device at a start of the use of the electric equipment. The server apparatus then detects an abnormality in the electrical-power storage device by using the value indicating the state of the electrical-power storage device at the end of the use and the value indicating the state of the electrical-power storage device at the start of the use.

First claim

What is claimed is:

1. An abnormality detection method for detecting an abnormality in an electrical-power storage device including a storage battery, the electrical-power storage device being connected to power an electric equipment via a discharging terminal pair, the method comprising:
obtaining, via an information terminal wirelessly connected to the electrical-power storage device, a value indicating a state of the electrical-power storage device at an end of a previous use of the electric equipment;
obtaining, via the information terminal, a value indicating a state of the electrical-power storage device at a start of current use of the electric equipment; and
detecting that the abnormality occurred in the electrical-power storage device during a use stop period, based on a difference in the value indicating the state of the electrical-power storage device at the end of the previous use and the value indicating the state of the electrical-power storage device at the start of the current use,
wherein the use stop period is a period from the end of the previous use of the electric equipment until the start of the current use of the electric equipment, and
wherein each of the start of the current use and the end of the previous use is determined based on a detection of movement of the electrical-power storage device, which is separate from a detection of power supply.

2. The abnormality detection method according to claim 1 ,
wherein, in the detecting of the abnormality, when a change from the value indicating the state of the electrical-power storage device at the end of the previous use to the value indicating the state of the electrical-power storage device at the start of the current use, the change being calculated using the value indicating the state of the electrical-power storage device at the end of the previous use and the value indicating the state of the electrical-power storage device at the start of the current use, is larger than or equal to a threshold, it is determined that the electrical-power storage device has the abnormality.

3. The abnormality detection method according to claim 1 ,
wherein, in the detecting of the abnormality, when the value indicating the state of the electrical-power storage device at the end of the previous use is smaller than or equal to a first threshold, and the value indicating the state of the electrical-power storage device at the start of the current use is larger than the first threshold, it is determined that the electrical-power storage device has the abnormality.

4. The abnormality detection method according to claim 3 ,
wherein each value indicating the state of the electrical-power storage device is at least one of a highest battery temperature value and a highest battery voltage value.

5. The abnormality detection method according to claim 1 ,
wherein, in the detecting of the abnormality, when the value indicating the state of the electrical-power storage device at the end of the previous use is larger than or equal to a second threshold, and the value indicating the state of the electrical-power storage device at the start of the current use is smaller than the second threshold, it is determined that the electrical-power storage device has the abnormality.

6. The abnormality detection method according to claim 5 ,
wherein each value indicating the state of the electrical-power storage device is at least one of a lowest battery temperature value and a lowest battery voltage value.

7. The abnormality detection method according to claim 1 , wherein the state of the electrical-power storage device refers to a remaining battery capacity.

8. The abnormality detection method according to claim 1 , further comprising:
presenting, to a user, information indicating that the abnormality is detected in the electrical-power storage device.

9. The abnormality detection method according to claim 1 , further comprising:
transmitting, by the electrical-power storage device, the state of the electrical-power storage device to the informational terminal at certain use periods.

10. The abnormality detection method according to claim 1 ,
wherein the value indicating the state of the electrical-power storage device is at least one of a remaining battery capacity, a battery voltage, a charging count, a discharging count, a total amount of charge, a total amount of discharge, and an internal resistance.

11. A system, comprising:
an electrical-power storage device including a storage battery, the electrical-power storage device configured to connect to an electric equipment and power the electric equipment via a discharging terminal pair;
an obtainer that
obtains, via an information terminal wirelessly connected to the electrical-power storage device, a value indicating a state of the electrical-power storage device at an end of a previous use of the electric equipment, and
obtains, via the information terminal, a value indicating a state of the electrical-power storage device at a start of current use of the electric equipment; and

an abnormality detector that detects an abnormality that occurred in the electrical-power storage device during a use stop period, based on a difference in the value indicating the state of the electrical-power storage device at the end of the previous use and the value indicating the state of the electrical-power storage device at the start of the current use,
wherein the value indicating the state of the electrical-power storage device at the end of the previous use and the value indicating the state of the electrical-power storage device at the start of the current use are obtained by the obtainer, and
wherein the use stop period is a period from the end of the previous use of the electric equipment until the start of the current use of the electric equipment, and
wherein each of the start of the current use and the end of the previous use is determined based on a detection of movement of the electrical-power storage device, which is separate from a detection of power supply.

12. The system according to claim 11 ,
wherein the value indicating the state of the electrical-power storage device is at least one of a remaining battery capacity, a battery voltage, a charging count, a discharging count, a total amount of charge, a total amount of discharge, and an internal resistance.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Toya Shoichi

Classifications

• H02J7/84

  Control of state of health [SOH] · CPC title

• H02J7/82

  Control of state of charge [SOC] · CPC title

• G01R31/392 Primary

  Determining battery ageing or deterioration, e.g. state of health · CPC title

• Y02T90/16

  Information or communication technologies improving the operation of electric vehicles · CPC title

• Y02T90/12

  Electric charging stations · CPC title