Notification system and method for providing remaining running time of a battery

Patent metadata

Field	Value
Publication number	US-2018080995-A1
Application number	US-201615270025-A
Country	US
Kind code	A1
Filing date	Sep 20, 2016
Priority date	Sep 20, 2016
Publication date	Mar 22, 2018
Grant date	—

Abstract

A notification method and system for providing notification regarding remaining time of a battery are disclosed. According to certain embodiments, the method may include predicting an ambient temperature of the battery. The method may also include determining a power demand for the battery. The method may also include determining a state of health (SoH) of the battery. The method may also include predicting a remaining time for a state of charge (SoC) of the battery to reach a predetermined level, based on the ambient temperature, the power demand, and the SoH. The method may further include providing a notification regarding the remaining time.

First claim

What is claimed is:

1 . A notification method for a battery, the method comprising:
predicting an ambient temperature of the battery; determining a power demand for the battery; determining a state of health (SoH) of the battery; predicting a remaining time for a state of charge (SoC) of the battery to reach a predetermined level, based on the ambient temperature, the power demand, and the SoH; and providing a notification regarding the remaining time.

2 . The method of claim 1 , wherein predicting the ambient temperature comprises:
acquiring historical weather data of an area where the battery is located; estimating future weather condition based on the historical weather data; and predicting the ambient temperature based on the future weather condition.

3 . The method of claim 1 , wherein the SoH comprises at least one of a capacity of the battery, an internal resistance of the battery, or self-discharge characteristics of the battery.

4 . The method of claim 3 , wherein predicting the remaining time comprises:
determining a current drawn from the battery; determining an initial SoC of the battery; and predicting the remaining time based on the current, the initial SoC, and the capacity of the battery.

5 . The method of claim 4 ,
wherein the current drawn from the battery comprises a self-discharge current of the battery; and wherein the method further comprises:
predicting the self-discharge current based on the initial SoC, the ambient temperature, and the self-discharge characteristics of the battery.

6 . The method of claim 4 ,
wherein the current drawn from the battery comprises a current required by a load of the battery; and wherein the method further comprises:
predicting the current required by the load based on the initial SoC, the ambient temperature, the internal resistance of the battery, and power required by the load.

7 . The method of claim 1 , wherein determining the remaining time further comprises:
determining that a condition has occurred; and in response to the determination, updating the remaining time.

8 . The method of claim 7 , wherein the condition comprises at least one of:
receiving a user command for updating the remaining time; determining that a user-specified requirement is satisfied; or determining that a status of a device using the battery has changed.

9 . The method of claim 7 ,
wherein the time to be updated is a first remaining time determined at a first point in time; and wherein updating the remaining time comprises:
determining, at a second point in time, a second remaining time; and
computing an updated remaining time based on a weighted function of the first and second remaining time.

10 . The method of claim 1 , wherein the battery is used in a vehicle.

11 . The method of claim 10 , wherein the power demand for the battery comprises power required by a vehicle monitoring system of the vehicle.

12 . The method of claim 10 , wherein the notification indicates whether the battery has enough energy for the vehicle to reach a charging station.

13 . The method of claim 12 , wherein:
when determining that the remaining time reaches a preset time duration or corresponds to a minimum energy level of the battery required by the vehicle to reach the charging station, presenting the notification via a user interface.

14 . The method of claim 12 , further comprising:
acquiring location information of one or more charging stations; determining an average distance from the vehicle to the charging stations; and determining the minimum energy level based on the average distance.

15 . A notification system of for a battery, the system comprising:
a memory storing instructions; and a processor configured to execute the instructions to:
predict an ambient temperature of the battery;
determine a power demand for the battery;
determine a state of health (SoH) of the battery;
predict a remaining time for a state of charge (SoC) of the battery to reach a predetermined level, based on the ambient temperature, the power demand, and the SoH; and
provide the notification regarding the remaining time.

16 . The system of claim 15 , wherein the processor is further configured to execute the instructions to:
acquire historical weather data of an area where the battery is located; estimate future weather condition based on the historical weather data; and predict the ambient temperature based on the future weather condition.

17 . The system of claim 15 , wherein the processor is further configured to execute the instructions to:
determine a current drawn from the battery; determine an initial SoC of the battery; and predict the remaining time based on the current, the initial SoC, and a capacity of the battery.

18 . The system of claim 17 ,
wherein the current drawn from the battery comprises a self-discharge current of the battery; and wherein the processor is further configured to execute the instructions to:
predict the self-discharge current based on the initial SoC, the ambient temperature, and self-discharge characteristics of the battery.

19 . The system of claim 17 ,
wherein the current drawn from the battery comprises a current required by a load of the battery; and wherein the processor is further configured to execute the instructions to:
predict the current required by the load based on the initial SoC, the ambient temperature, an internal resistance of the battery, and power required by the load.

20 . A vehicle, comprising:
a battery; a battery management system configured to determine a state of charge (SoC) and a state of health (SoH) of the battery; and a controller configured to:
predict an ambient temperature of the battery
determine power required by the vehicle;
predict a remaining time for the SoC of the battery to reach a predetermined level, based on the ambient temperature, the power required by the vehicle, and the SoH; and
provide the notification regarding the remaining time.

Assignees

• Faraday&Future Inc

Inventors

• Heinen Garrett David

Classifications

• Y02T90/16

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

• B60L3/12

  Recording operating variables {; Monitoring of operating variables} · CPC title

• G01R31/392 Primary

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

• B60L2240/54

  related to batteries · CPC title

• B60L58/16

  responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH] · CPC title