US 2017/0254858 A1Published application

Electric vehicle battery monitoring system

AssigneeFaraday & Future Inc.

InventorsPhillip John Weicker, Garrett David Heinen

Life of this patent

Estimating the term…

Loading patent…

Abstract

Systems and methods for monitoring and controlling a battery are disclosed. Systems can include a battery having an output voltage and an output current when delivering power, a load driven by power delivered from the battery, battery output voltage and current sensing circuits, and processing circuitry coupled to the battery output voltage and current sensing circuits. The processing circuitry may be configured to obtain sensed battery output voltage and current values, and to estimate values for at least three battery state parameters by concurrently fitting the voltage and current values to at least two different equations.

Claims26

Dependent claims

A battery powered apparatus comprising:

a battery comprising one or more electrochemical cells, the battery having an output voltage and an output current when delivering power;
a load driven by power delivered from the battery;
a battery output voltage sensing circuit;
a battery output current sensing circuit;
and
processing circuitry coupled to the battery output voltage sensing circuit and the battery output current sensing circuit, the processing circuitry configured to obtain sensed battery output voltage values and sensed battery output current values at defined intervals and to estimate values for at least three battery state parameters at particular times when the battery is delivering power to the load, wherein each of the at least three battery state parameters varies over time as the battery is used to drive the load;
wherein estimating the at least three battery state parameters comprises concurrently fitting sensed battery output voltage values and sensed battery output current values and/or data derived using the sensed battery output voltage values and sensed battery output current values to at least two different equations, wherein each of the at least two different equations are defined at least in part by different subsets of the at least three battery state parameters.

4 more elements

An electric vehicle with a battery monitoring system, the vehicle comprising:

a battery;
a powertrain comprising at least one electric motor driven by the battery;
a battery output voltage sensing circuit;
a battery output current sensing circuit;
and
processing circuitry coupled to the battery output voltage sensing circuit and the battery output current sensing circuit, the processing circuitry configured to obtain sensed battery output voltage values and sensed battery output current values at defined intervals and to estimate values for at least three battery state parameters at particular times when the battery is delivering power to the powertrain, wherein each of the at least three battery state parameters varies over time as the battery is used to drive the powertrain, wherein estimating the at least three battery state parameters comprises concurrently fitting sensed battery output voltage values and sensed battery output current values and/or data derived from the sensed battery output voltage values and sensed battery output current values to at least two different equations, wherein each of the at least two different equations are defined at least in part by different subsets of the at least three battery state parameters.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/057,739Filed 1 Mar 2016
Published: 7 Sep 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01R 31/3648
Constructional arrangements: comprising digital calculation means, e.g. for performing an algorithm
B60L 58/12
For monitoring or controlling batteries: responding to state of charge [SoC]
G01R 31/3842
Arrangements for monitoring battery or accumulator variables, e.g. SoC: combining voltage and current measurements
Y02T 10/70
Other road transportation technologies with climate change mitigation effect: energy storage systems for electromobility, e.g. batteries

Family

US 10,436,845 B2Related patent
US 2017/0254858 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key