Battery abnormality prediction notification system, battery abnormality prediction system, battery abnormality prediction method, and non-transitory recording medium storing battery abnormality prediction program
In a battery abnormality prediction system, an acquisition unit acquires a current flowing through a battery and a temperature of the battery. A prediction unit predicts the occurrence of an abnormality in the battery, based on a relationship between the amount of the current flowing through the battery for a certain period of time and a rise in the temperature of the battery for the certain period of time. The prediction unit may compare the ratio of an integrated amount of current to the temperature rise for the certain period of time with a threshold determined based on data on the battery having caught fire and thereby predict a sign of fire to be caught by the battery.
1 . A battery abnormality prediction system, comprising:
one or more memories; and
at least one processor each coupled to at least one of the one or more memories and configured to perform operations comprising:
acquiring a current flowing through a secondary battery to be installed in a portable apparatus and a temperature of the secondary battery;
predicting occurrence of an abnormality in the secondary battery, as a determination score, based on a relationship between an amount of the current flowing through the secondary battery for a certain period of time and a rise in temperature of the secondary battery for the certain period of time;
detecting a sign of a potential fire to be caught by the secondary battery by comparing the determination score indicating a relationship between the amount of the current and the rise in temperature for the certain period of time with a threshold determined based on data on a secondary battery that caught fire; and
interrupting the current flowing through the secondary battery to be installed in the portable apparatus in response to detecting the sign of the potential fire.
2 . The battery abnormality prediction system according to claim 1 ,
wherein the determination score is defined by a ratio of an integrated amount of current to the rise in temperature for the certain period of time.
3 . The battery abnormality prediction system according to claim 2 , wherein
the portable apparatus is a motor vehicle.
4 . The battery abnormality prediction system according to claim 3 , further comprising:
a charger configured to charge the secondary battery.
5 . The battery abnormality prediction system according to claim 3 , further comprising:
a charger configured to charge the secondary battery and
a charging adapter configured to conduct electric power between the charger and the secondary battery.
6 . A battery abnormality prediction notification system, comprising the motor vehicle and the battery abnormality prediction system according to claim 3 , wherein
the motor vehicle further includes:
a vehicle control unit configured to control the motor vehicle; and
a battery control unit configured to control charging of the secondary battery, and
a fire-sign signal indicating the sign of the potential fire to be caught by the battery is transmitted to the vehicle control unit or the battery control unit.
7 . The battery abnormality prediction notification system according to claim 6 , further comprising:
a charger configured to charge the secondary battery installed in the motor vehicle, wherein the charger receives data from a network, and
the fire-sign signal is transmitted to the vehicle control unit or the battery control unit via the charger.
8 . The battery abnormality prediction notification system according to claim 7 , wherein
the motor vehicle further includes:
a power system; and
a relay configured to conduct or interrupt a current between the secondary battery and the power system, and
the interrupting the current flowing through the secondary battery comprises receiving, by the vehicle control unit, the fire-sign signal and causing, by the vehicle control unit, the relay to interrupt the current between the secondary battery and the power system.
9 . The battery abnormality prediction notification system according to claim 6 , further comprising:
a charger configured to charge the secondary battery; and
a charging adapter configured to conduct electric power between the charger and the secondary battery,
wherein the charging adapter receives data from a network, and
the fire-sign signal is transmitted to the vehicle control unit or the battery control unit via the charging adapter.
10 . The battery abnormality prediction system according to claim 1 , wherein
the secondary battery is installed in a motor vehicle, and
the operations comprise acquiring, via a network, a current and a temperature of the secondary battery installed in the motor vehicle.
11 . The battery abnormality prediction system according to claim 10 , wherein the threshold is determined on a vehicle type basis.
12 . A battery abnormality prediction notification system, comprising the battery abnormality prediction system according to claim 10 , wherein,
when the battery abnormality prediction system is accessed from a terminal device via the network, a result of comparing the ratio of the integrated amount of current to the rise in temperature for the certain period of time with the threshold determined based on the data on the battery that caught fire is transmitted.
13 . The battery abnormality prediction notification system according to claim 12 , wherein,
on receipt of the result, the terminal device provides an indication corresponding to the result.
14 . The battery abnormality prediction notification system according to claim 12 wherein,
the indication provided by the terminal device is an error code or an error message, the error code or the error message indicating a fire-sign state of the secondary battery.
15 . A battery abnormality prediction method, comprising:
acquiring a current flowing through a secondary battery to be installed in a portable apparatus and a temperature of the secondary battery;
predicting occurrence of an abnormality in the secondary battery, as a determination score, based on a relationship between an amount of the current flowing through the secondary battery for a certain period of time and a rise in temperature of the secondary battery for the certain period of time;
detecting a sign of a potential fire to be caught by the secondary battery by comparing a determination score indicating a relationship between the amount of the current and the rise in temperature for the certain period of time with a threshold determined based on data on a secondary battery that caught fire; and
interrupting the current flowing through the secondary battery to be installed in the portable apparatus in response to detecting the sign of the potential fire.
16 . The battery abnormality prediction method according to claim 15 , wherein
a motor vehicle includes:
a vehicle control unit configured to control the motor vehicle; and
a battery control unit configured to control charging of the battery,
the battery abnormality prediction method further comprises notifying the vehicle control unit or the battery control unit of occurrence of the abnormality in the battery.
17 . A non-transitory recording medium storing a battery abnormality prediction program, the battery abnormality prediction program causing a computer to execute:
processing to acquire a current flowing through a secondary battery and a temperature of the secondary battery;
processing to predict occurrence of an abnormality in the secondary battery, as the determination score, based on a relationship between an amount of the current flowing through the secondary battery for a certain period of time and a rise in temperature of the secondary battery for the certain period of time;
processing to detect a sign of a potential fire to be caught by the secondary battery by comparing a determination score indicating a relationship between the amount of the current and the rise in temperature for the certain period of time with a threshold determined based on data on a secondary battery that caught fire; and
processing to interrupt the current flowing through the secondary battery in response to detecting the sign of the potential fire.
18 . The non-transitory recording medium storing the battery abnormality prediction program according to claim 17 , wherein
a motor vehicle includes:
a vehicle control unit configured to control the motor vehicle; and
a battery control unit configured to control charging of the battery, and the battery abnormality prediction program further causes the computer to execute processing to notify the vehicle control unit or the battery control unit of occurrence of the abnormality in the battery.