US 12,752,657 B2Granted

Method and apparatus for determining electric vehicle charging inlet terminal temperature

AssigneeAptiv Technologies AG

InventorsThomas Mathews, Michael Phifer

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Abstract

An electric vehicle charging system includes a temperature sensor for measuring the temperature of an inlet terminal of an electric vehicle charging inlet and an electronic controller configured to obtain an initial temperature value of the temperature sensor, obtain a current temperature value of the temperature sensor, calculate the inlet terminal temperature based on the initial temperature value, the current temperature value, a predetermined temperature sensor normalization factor, and a predetermined terminal normalization factor for the time after application of electrical power to the inlet terminal, and regulate the application of electrical power to the inlet terminal to maintain the inlet terminal temperature below a predetermined temperature threshold based on the calculated inlet terminal temperature. A method and a computer readable medium containing program instructions for determining an inlet terminal temperature of an electric vehicle charging inlet are also disclosed.

Claims11

Dependent claims

A method for determining an inlet terminal temperature of an electric vehicle charging inlet using an electronic controller, comprising:

obtaining an initial temperature value of a temperature sensor configured to measure the temperature of an inlet terminal of the electric vehicle charging inlet via the electronic controller prior to application of electrical power to the inlet terminal;
obtaining a current temperature value of the temperature sensor via the electronic controller at a time after application of electrical power to the inlet terminal;
calculating the inlet terminal temperature using the electronic controller based on the initial temperature value, the current temperature value, a predetermined temperature sensor normalization factor, and a predetermined terminal normalization factor stored in a memory device that is in electronic communication with the electronic controller for the time after application of electrical power to the inlet terminal, the inlet terminal temperature is calculated by the electronic controller using the formula:
T
terminal
(
t
)
=
T
sensor
(
t
0
)
+
(
T
sensor
(
t
)
-
T
sensor
(
t
0
)
NF
sensor
(
t
)
)
*
NF
terminal
(
t
)
,
wherein Tterminal(t) is the inlet terminal temperature, Tsensor(t0) is the initial temperature value of the temperature sensor, Tsensor(t) is the current temperature value of the temperature sensor, NFsensor(t) is the temperature sensor normalization factor, and NFterminal(t) is the terminal normalization factor;
and
regulating the application of electrical power to the inlet terminal using the electronic controller to maintain the inlet terminal temperature below a predetermined threshold based on the calculated inlet terminal temperature.

42 more elements

A computer readable medium containing program instructions for determining an inlet terminal temperature of an electric vehicle charging inlet, wherein execution of the program instructions by one or more processors of a computer system causes the one or more processors to carry out the steps of:

obtaining an initial temperature value of a temperature sensor configured to measure the temperature of an inlet terminal of the electric vehicle charging inlet prior to application of electrical power to the inlet terminal;
obtaining a current temperature value of the temperature sensor at a time after application of electrical power to the inlet terminal;
calculating the inlet terminal temperature of an electric vehicle charging inlet based on the initial temperature value, the current temperature value, a predetermined temperature sensor normalization factor, and a predetermined terminal normalization factor for the time after application of electrical power to the inlet terminal, wherein the temperature sensor normalization factor is contained in the computer readable medium, the program instructions contain the following formula for calculating the inlet terminal temperature:
T
terminal
(
t
)
=
T
sensor
(
t
0
)
+
(
T
sensor
(
t
)
-
T
sensor
(
t
0
)
NF
sensor
(
t
)
)
*
NF
terminal
(
t
)
,
wherein Tterminal(t) is the inlet terminal temperature, Tsensor(t0) is the initial temperature value of the temperature sensor, Tsensor(t) is the current temperature value of the temperature sensor, NFsensor(t) is the temperature sensor normalization factor, and NFterminal(t) is the terminal normalization factor;
and
regulating the application of electrical power to the inlet terminal to maintain the inlet terminal temperature below a predetermined temperature threshold based on the calculated inlet terminal temperature.

42 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/121,665Filed 15 Mar 2023 · us provisional application
Priority: 22 Mar 2022
Published: US 2023/0302936 A128 Sep 2023
Granted: 6 Oct 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

B60L 53/60
Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of…:…
B60L 53/16
Conductive energy transfer: connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
G01K 3/005
Thermometers giving results other than momentary value of temperature: circuits arrangements for indicating a predetermined temperature
G01K 7/22
Using resistive elements: the element being a non-linear resistance, e.g. thermistor