Adaptive system and method for optimizing a fleet of plug-in vehicles

Patent metadata

Field	Value
Publication number	US-10099569-B2
Application number	US-201615279571-A
Country	US
Kind code	B2
Filing date	Sep 29, 2016
Priority date	Sep 29, 2016
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A system and method for optimizing a plug-in vehicle fleet having a plurality of battery packs across the vehicle fleet. Each vehicle includes a battery pack. The system includes sensors for measuring battery performance data and includes an open-circuit voltage, charging current, and/or temperature of the battery pack, a GPS receiver, a user interface, and a controller. The controller executes a method to monitor degradation of each battery pack using a variety of current and historical data points. The controller then controls a charging operation of each battery pack in a fleet via a charging control signal sent to a particular vehicle in the fleet. The controller also then determines the new location for each particular vehicle in a fleet.

First claim

What is claimed is:

1. A system for optimizing life of a plurality of battery packs in a fleet vehicle, the system comprising:
a battery sensor on a fleet vehicle operatively configured to measure performance data of a vehicle battery in the fleet vehicle;
a global positioning system (GPS) receiver operable for determining a position of the fleet vehicle;
a controller in communication with the battery sensor and the GPS receiver, wherein the controller is further programmed to:
determine a battery charging history and a driving history for the fleet vehicle using the measured battery performance data and a position signal from the GPS receiver, wherein the driving history and the battery charging history identify the days, hours, and locations at which the vehicle was driven;
obtain a state-of-charge for the vehicle battery;
determine a system need for the fleet vehicle via an adaptive learning module;
transmit an output signal to at least one of the fleet vehicle and a charging station associated with the fleet vehicle, the output signal being one of a high output signal, a medium output signal, a low output signal, or a chargeback output signal;
automatically control a charging operation of the vehicle battery in the fleet vehicle based on the output signal; and
direct the fleet vehicle to a new location based on the output signal.

2. The system of claim 1 wherein the new location for the fleet vehicle is a parking lot when the output signal is the chargeback signal.

3. The system of claim 1 wherein the new location for the fleet vehicle is an open ride retrieval location for long travel distances when the output signal is the high output signal.

4. The system of claim 1 wherein the new location for the fleet vehicle is an open ride retrieval location for short travel distances when the output signal is the low output signal.

5. The system of claim 1 wherein the new location for the fleet vehicle is an open ride retrieval location for medium travel distances when the output signal is the medium output signal.

6. A method for optimizing life of a plurality of battery packs in a plug-in vehicle fleet, the method comprising:
measuring battery performance data battery pack of a fleet vehicle via a plurality of sensors in the fleet vehicle, including measuring an open-circuit voltage of the battery pack;
determining a position of the fleet vehicle using a global positioning system (GPS) receiver;
monitoring the degradation of the battery pack of the fleet vehicle over time via a controller using the measured battery performance data;
determining a driving history and a battery charging history for the fleet vehicle using the measured battery performance data and a position signal from the GPS receiver, wherein the driving history and battery charging history identify the days, hours, and locations for the fleet vehicle;
determining a system need for the fleet vehicle based on a regional data input, the driving history and the battery charging history for the fleet vehicle via an adaptive learning module;
transmitting an output signal responsive to the system need;
automatically controlling a charging operation of a battery pack for the plug in the vehicle via the controller based on the output signal; and
stationing the fleet vehicle to a new location based on the output signal.

7. The method of claim 6 , wherein the plurality of sensors includes a current sensor operable for detecting the charging current and a temperature sensor operable for measuring a temperature of the battery pack, and wherein measuring the battery performance data includes measuring the charging current and the temperature.

8. The method of claim 6 , wherein the step of stationing the fleet vehicle to a new location includes directing the fleet vehicle to a parking lot when the output signal to the fleet vehicle is a chargeback signal.

9. The method of claim 6 , wherein the step of stationing the fleet vehicle to a new location includes directing the fleet vehicle to an open ride retrieval location for long travel distances when the output signal to the fleet vehicle is a high output signal.

10. The method of claim 6 , wherein the step of stationing the fleet vehicle to a new location includes directing the fleet vehicle to an open ride retrieval location for short travel distances when the output signal to the fleet vehicle is a low output signal.

11. The method of claim 6 , wherein the step of stationing the fleet vehicle to a new location includes directing the fleet vehicle to an open ride retrieval location for medium travel distances when the output signal to the fleet vehicle is a medium output signal.

12. The method of claim 6 , wherein the step of automatically controlling a charging operation of the battery pack includes adjusting the SOC for the battery pack to a high SOC when the output signal is a high output signal.

13. The method of claim 6 , wherein the step of automatically controlling a charging operation of the battery pack includes adjusting the SOC for the battery pack to a low SOC when the output signal is a low output signal.

14. The method of claim 6 , wherein the step of automatically controlling a charging operation of the battery pack includes adjusting the SOC for the battery pack to a medium SOC when the output signal is a medium output signal.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Lindemann Todd P
• Cory Danielle A
• White Rachel A
• Denic Vukasin
• Kalweit Nicholas J
• Gorski Eric F

Classifications

• G01C21/3469

  Fuel consumption; Energy use; Emission aspects · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• B60L2240/72

  Charging station selection relying on external data · CPC title

• B60L2240/62

  Vehicle position · CPC title

• B60L2240/549

  Current · CPC title