IP Library › Granted Patent US 12686279
Granted Patent B2
US 12686279 · App. 18/728,494 · Granted Jul 21, 2026

Electrified motor vehicle with a central component-specific energy monitoring function

Inventor: Pascal Schirmer (Munich, DE)
Assignee: Bayerische Motoren Werke Aktiengesellschaft
B60L3/12G07C5/006G07C5/085B60L50/60B60L2210/10
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Quick Facts
Patent No.
US 12686279
App. No.
18/728,494
Granted
Jul 21, 2026
Kind
B2
Abstract

An electrified motor vehicle with a high-voltage storage device, at least one electric machine, power electronics, a DC/DC converter, and an electronic analysis device to perform a central component-specific energy monitoring function of defined components of a low-voltage onboard electrical system and/or defined components of a high-voltage onboard electrical system. The analysis device is designed such that a specific load signature is stored for each defined component, and a complete measurement signal which is detected outside of the defined component using a first (e.g., single) measurement sensor for the entire low-voltage onboard electrical system and/or a second (e.g., single) measurement sensor for the high-voltage onboard electrical network is disaggregated in order to detect the load signatures using non-intrusive load monitoring (NILM) technology. Each complete measurement signal is purged of motor vehicle-specific electric disturbance variables by a defined correction device.

Claims (24)

1 . An electrified motor vehicle comprising:

a high-voltage storage device;

at least one electric machine;

power electronics comprising a DC/DC converter; and

an electronic evaluation device configured to:

perform central component-specific energy monitoring of defined components of a low-voltage on-board electrical system and/or defined components of a high-voltage on-board electrical system, wherein the evaluation device has stored therein a specific load signature for each defined component, and

disaggregate a total measurement signal that is captured outside of the defined components using a first measurement sensor for an entire low-voltage on-board electrical system and/or using a second measurement sensor for an entire high-voltage on-board electrical system, to identify the load signatures using non-intrusive load monitoring (NILM) technology,

wherein the respective total measurement signal is cleaned of motor-vehicle-specific electrical interference variables by a defined correction device before being disaggregated.

2 . The electrified motor vehicle according to claim 1 , wherein the first measurement sensor is arranged at an output of the DC/DC converter and/or the second measurement sensor is arranged at an output of the high-voltage storage device.

3 . The electrified motor vehicle according to claim 1 , wherein the correction device for the total measurement signal of the first measurement sensor comprises inverse behavior of the DC/DC converter, which behavior is stored in the evaluation device.

4 . The electrified motor vehicle according to claim 1 , wherein the correction device for the total measurement signal of the second measurement sensor comprises inverse behavior of the power electronics, which behavior is stored in the evaluation device.

5 . The electrified motor vehicle according to claim 1 , wherein the correction device is configured to be set in a variable manner, depending on current operating variables of the at least one electric machine and/or on a switching state of the power electronics, before the disaggregation of the total measurement signal of the second measurement sensor.

6 . The electrified motor vehicle according to claim 1 , wherein the evaluation device outputs on a first display individual energy consumption of defined components on a basis of the disaggregated load signatures.

7 . The electrified motor vehicle according to claim 6 , wherein the evaluation device outputs on a second display maintenance information relating to a particular component depending on a change in its individual energy consumption compared to its stored and disaggregated load signature.

8 . The electrified motor vehicle according to claim 1 , wherein the evaluation device outputs on a second display maintenance information relating to a particular component depending on a change in its individual energy consumption compared to its stored and disaggregated load signature.

9 . The electrified motor vehicle according to claim 2 , wherein the correction device for the total measurement signal of the first measurement sensor comprises inverse behavior of the DC/DC converter, which behavior is stored in the evaluation device.

10 . The electrified motor vehicle according to claim 2 , wherein the correction device for the total measurement signal of the second measurement sensor comprises inverse behavior of the power electronics, which behavior is stored in the evaluation device.

11 . The electrified motor vehicle according to claim 2 , wherein the correction device is configured to be set in a variable manner, depending on current operating variables of the at least one electric machine and/or on a switching state of the power electronics, before the disaggregation of the total measurement signal of the second measurement sensor.

12 . The electrified motor vehicle according to claim 2 , wherein the evaluation device outputs on a first display individual energy consumption of defined components on a basis of the disaggregated load signatures.

13 . The electrified motor vehicle according to claim 2 , wherein the evaluation device outputs on a second display maintenance information relating to a particular component depending on a change in its individual energy consumption compared to its stored and disaggregated load signature.

14 . The electrified motor vehicle according to claim 3 , wherein the correction device for the total measurement signal of the second measurement sensor comprises inverse behavior of the power electronics, which behavior is stored in the evaluation device.

15 . The electrified motor vehicle according to claim 3 , wherein the correction device is configured to be set in a variable manner, depending on current operating variables of the at least one electric machine and/or on a switching state of the power electronics, before the disaggregation of the total measurement signal of the second measurement sensor.

16 . The electrified motor vehicle according to claim 3 , wherein the evaluation device outputs on a first display individual energy consumption of defined components on a basis of the disaggregated load signatures.

17 . The electrified motor vehicle according to claim 3 , wherein the evaluation device outputs on a second display maintenance information relating to a particular component depending on a change in its individual energy consumption compared to its stored and disaggregated load signature.