Aftertreatment heater power electronics

Patent metadata

Field	Value
Publication number	US-2025067205-A1
Application number	US-202418946570-A
Country	US
Kind code	A1
Filing date	Nov 13, 2024
Priority date	May 16, 2021
Publication date	Feb 27, 2025
Grant date	—

Abstract

An aftertreatment system of a vehicle includes an electric heater device; a converter structured to provide power to the electric heater device; and a monitoring system including: a current measuring device structured to measure an input current at an input terminal of the converter; and a controller structured to determine an output current at an output terminal of the converter based at least on the input current measured at the input terminal and an operation condition of the converter.

First claim

What is claimed is:

1 . An aftertreatment system for a vehicle, comprising:
an electric heater device; a converter structured to provide power to the electric heater device; and a monitoring system including:
a first voltage measuring device structured to measure an input voltage at an input terminal of the converter;
a second voltage measuring device structured to measure an output voltage at an output terminal of the converter;
a current measuring device structured to measure an input current at the input terminal; and
a controller structured to determine an output current at the output terminal based on the input voltage measured at the input terminal, the input current measured at the input terminal, the output voltage measured at the output terminal, and a predicted loss value of the converter.

2 . The aftertreatment system of claim 1 , wherein the electric heater device includes a resistive heater.

3 . The aftertreatment system of claim 1 , wherein the controller includes the first voltage measuring device, the second voltage measuring device, and the current measuring device.

4 . The aftertreatment system of claim 1 , wherein the converter is a phase converter.

5 . The aftertreatment system of claim 1 , wherein the converter is a power converter.

6 . The aftertreatment system of claim 1 , wherein the controller is further structured to determine the output current by calculating an input power based on the input voltage and the input current, reduce the input power by the predicted loss value to estimate an output power, and calculate the output current by dividing the estimated output power by the output voltage.

7 . The aftertreatment system of claim 1 , wherein the controller is further structured to report the determined output current to a control system of the vehicle.

8 . An aftertreatment system for a vehicle, comprising:
an electric heater device; a converter structured to provide power to the electric heater device; and a monitoring system including:
a voltage measuring device structured to measure an input voltage at an input terminal of the converter;
a current measuring device structured to measure an input current at the input terminal; and
a controller structured to determine an output current at an output terminal of the converter based on the input voltage measured at the input terminal, the input current measured at the input terminal, and an operation condition of the converter.

9 . The aftertreatment system of claim 8 , wherein the converter is a phase converter, and the operation condition is an efficiency value of the phase converter.

10 . The aftertreatment system of claim 8 , wherein the controller determines the output current using an efficiency model lookup table.

11 . The aftertreatment system of claim 8 , wherein the electric heater device includes a resistive heater.

12 . The aftertreatment system of claim 8 , wherein the controller includes the voltage measuring device and the current measuring device.

13 . The aftertreatment system of claim 8 , wherein the controller is further structured to report the determined output current to a control system of the vehicle.

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Stoltz Thomas Joseph
• Yeranosian Viken Rafi
• Behringer Sarah Elizabeth
• Mercer Elizabeth Jane
• Downing Nicole
• Mccarthy Jr James E

Classifications

• B60L1/02

  to electric heating circuits · CPC title

• H05K7/20909

  Forced ventilation, e.g. on heat dissipaters coupled to components · CPC title

• F01N2900/1811

  Temperature · CPC title

• F01N2900/04

  Methods of control or diagnosing · CPC title

• F01N2610/105

  Control thereof · CPC title