Reporting of vehicle battery state of health and charge

Patent metadata

Field	Value
Publication number	US-10598734-B2
Application number	US-201615396057-A
Country	US
Kind code	B2
Filing date	Dec 30, 2016
Priority date	Dec 30, 2016
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

Systems of an electrical vehicle and the operations thereof are provided. In particular, a vehicle is described with the ability to gather State of Charge (SOC) information as well as State of Health (SOH) information for one or more batteries in a vehicle and then display both SOC and SOH information to a driver of the vehicle as well as other interested parties. The displayed SOH information may be accompanied by suggestions to modify driving and/or charging behaviors that will improve or contribute to a slower degradation in the SOH of the batteries.

First claim

What is claimed is:

1. A vehicle, comprising:
a plurality of battery sensors, each of the plurality of sensors being configured to translate one or multiple battery performance parameters into an electrical signal indicative of the one or multiple battery performance parameters; and
a energy management system comprising:
one or more sensor interfaces that enable the energy management system to receive electrical signals from the plurality of battery sensors;
a State of Charge (SOC) manager that prepares SOC information describing a SOC of one or more batteries in the vehicle based on the received electrical signals and reports the SOC information via an instrument panel of the vehicle;
a State of Health (SOH) manager that prepares first SOH information describing a SOH of the one or more batteries in the vehicle based on the received electrical signals and reports the first SOH information via the instrument panel of the vehicle; and
SOH optimizer instructions that, when executed by a processor, cause the processor to:
identify a plurality of vehicles;
determine a subset of vehicles in the identified plurality vehicles having better SOH performance than remaining vehicles in the identified plurality of vehicles;
analyze second SOH information describing a SOH of batteries in the subset of vehicles;
identify commonalities within the analyzed second SOH information that contribute to the subset of vehicles having the better SOH performance; and
determine a suggested change in a particular use of the one or more batteries by the user of the vehicle based on the identified commonalities.

2. The vehicle of claim 1 , wherein the energy management system applies one or more report filters to the first SOH information such that a first set of the first SOH information is reported via the instrument panel and a second set of the first SOH information is reported to a data storage medium, and wherein the subset of vehicles is about 10% of the plurality of vehicles.

3. The vehicle of claim 2 , wherein the first set of the first SOH information comprises a subset of SOH information contained in the second set of the first SOH information.

4. The vehicle of claim 2 , wherein the second set of the first SOH information includes battery performance parameters that are not included in the first set of the first SOH information.

5. The vehicle of claim 1 , wherein the first and the second SOH information comprise a plurality or representation of the following performance parameters: battery capacity, battery internal resistance, battery self-discharge, battery charge acceptance, battery discharge capabilities, mobility of electrolytes, and cycle-counting information.

6. The vehicle of claim 1 , wherein the suggested change in the particular use of the one or more batteries by the user of the vehicle corresponds to a suggested change to one or more of a driving behavior of the user while driving the vehicle and a battery charge behavior of the user when charging the one or more batteries of the vehicle, and wherein the instructions cause the processor to organize the second SOH information according to one or more characteristics of battery cells within the batteries of the subset of vehicles.

7. The vehicle of claim 6 , wherein the suggested change comprises one or more behaviors to avoid, and wherein the one or more characteristics includes battery cells from a same manufacturer, battery cells having similar chemistry, and battery cells from similar types of vehicles.

8. The vehicle of claim 6 , wherein the suggested change comprises one or more behaviors to implement.

9. The vehicle of claim 6 , wherein the suggested change is presented via one or both of the instrument panel of the vehicle or a communication device of the user of the vehicle.

10. The vehicle of claim 6 , wherein the suggested change is dependent, at least in part, upon an environmental condition around the vehicle.

11. An energy management system for use in an electric vehicle, the energy management system comprising:
one or more sensor interfaces that enable the energy management system to receive electrical signals from a plurality of battery sensors;
a State of Charge (SOC) manager that prepares SOC information describing a SOC of one or more batteries in the vehicle based on the received electrical signals and reports the SOC information via an instrument panel of the vehicle;
a State of Health (SOH) manager that prepares first SOH information describing a SOH of the one or more batteries in the vehicle based on the received electrical signals and reports the first SOH information via the instrument panel of the vehicle; and
SOH optimizer instructions that, when executed by a processor, cause the processor to:
identify a plurality of vehicles;
determine a subset of vehicles in the plurality vehicles to have better SOH performance than remaining vehicles in the plurality of vehicles;
analyze second SOH information describing a SOH of batteries in the subset of vehicles;
identify commonalities within the analyzed second SOH information that contribute to the subset of vehicles having the better SOH performance; and
determine a suggested change in a particular use of the one or more batteries by the user of the vehicle based on the identified commonalities.

12. The energy management system of claim 11 , wherein the first SOH information and the SOC information are configured to be displayed simultaneously via the instrument panel.

13. The energy management system of claim 11 , wherein the first SOH information and the SOC information are configured to be displayed separately and at different times via the instrument panel.

14. The energy management system of claim 11 , wherein the first and second SOH information comprise a plurality of a charge count, historical charging conditions, historical driving conditions, battery temperature history, predicted SOH, historical SOH, a count of fast charges, a suggested charge schedule, a max power history, an internal resistance history, suggested HVAC settings, voltage history, and a ratio of fast charges to total charges.

15. The energy management system of claim 14 , further comprising one or more report filters that are applied to the first SOH information such that a first set of the first SOH information is reported via the instrument panel and a second set of the first SOH information is reported to a remote server.

16. A method, comprising:
receiving electrical signals from a plurality of battery sensors;
preparing State of Charge (SOC) information describing a SOC of one or more batteries in a vehicle based on the received electrical signals;
reporting the SOC information via an instrument panel of the vehicle;
preparing first State of Health (SOH) information describing a SOH of the one or more batteries in the vehicle based on the received electrical signals;
reporting the first SOH information via the instrument panel of the vehicle;
identifying a plurality of vehicles;
determining a subset of vehicles in the identified plurality vehicles having better SOH performance than remaining vehicles in the identified plurality of vehicles;
analyzing second SOH information describing a SOH of batteries in the subset of vehicles;
identifying commonalities within the analyzed second SOH information that contribute to the subset of vehicles having the better SOH performance; and
determining a suggested change in a particular use of the one or more batteries by the user of the vehicle based on the identified commonalities.

17. The method of claim 16

Assignees

• Nio Usa Inc

Inventors

• Newman Austin L
• Smith Alexander J
• Ing Adam H

Classifications

• B60L53/665

  Methods related to measuring, billing or payment · CPC title

• B60L2240/54

  related to batteries · CPC title

• B60L2240/545

  Temperature · CPC title

• G01R31/392

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

• B60L2260/44

  by parameter estimation · CPC title