Electrical apparatus having one or more sensors on power-conducting and/or power-switching elements around which a fluid flows

Patent metadata

Field	Value
Publication number	US-12262494-B2
Application number	US-202318484459-A
Country	US
Kind code	B2
Filing date	Oct 11, 2023
Priority date	Oct 18, 2022
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

An electrical apparatus, including a first housing having a fluid-filled or fluid-perfused wet space and a dry space that are separated from one another by a wall, wherein the wall includes an opening, one or more power-conducting and/or power-switching elements arranged in the wet space, and a control electronics for the one or more power-switching elements arranged in the dry space. The electrical apparatus includes a second housing extending from the opening into the wet space, wherein the second housing reaches up to or encloses a power-conducting element, and a sensor arranged in the second housing, the sensor being configured to measure a variable that depends on an electrical power flowing through the power-conducting element. The second housing seals the opening in the wall in a fluid-tight manner. Measured values or signals of the sensor conducted by lines are passed through the opening into the dry space.

First claim

The invention claimed is:

1. An electrical apparatus, comprising:
a first housing having a fluid-filled or fluid-perfused wet space and a dry space that are separated from one another by a wall, wherein the wall comprises an opening;
one or more power-conducting and/or power-switching elements arranged in the wet space;
a control electronics for the one or more power-switching elements arranged in the dry space;
a second housing extending from the opening into the wet space, wherein the second housing reaches up to or encloses a power-conducting element; and
a sensor arranged in the second housing, the sensor being configured to measure a variable that depends on an electrical power flowing through the power-conducting element,
wherein the second housing seals the opening in the wall in a fluid-tight manner; and
wherein measured values or measured signals of the sensor conducted by lines are passed through the opening in the wall into the dry space.

2. The electrical apparatus according to claim 1 , wherein a seal is provided between the second housing and the wall.

3. The electrical apparatus according to claim 1 , wherein the second housing is open towards the dry space in a region of the opening in the wall.

4. The electrical apparatus according to claim 1 , wherein the second housing is filled with an electrically insulating casting compound.

5. The electrical apparatus according to claim 1 , wherein the second housing is configured to fix the one or more power-conducting elements, up to which the second housing reaches or which it encloses, in the wet space.

6. The electrical apparatus according to claim 1 , wherein the sensor arranged in the second housing is configured to measure an electrical current, a temperature, or a magnetic field.

7. An electric or hybrid vehicle having the electrical apparatus according to claim 1 .

8. A method for assembling the electrical apparatus according to claim 1 , comprising the following steps:
a) providing the first housing, the one or more power-conducting and power-switching elements, the control electronics, and the second housing with the sensor arranged therein;
b) arranging the second housing on at least one or around at least one of the one or more power-conducting elements;
c) connecting the at least one power-conducting element to at least one of the one or more power-switching elements;
d) positioning the at least one power-conducting and power-switching element in the wet space of the first housing such that the second housing comes to rest in or over the opening in the wall;
e) fixing the at least one power-conducting and power-switching element in the first housing, and fluid-tightly closing the opening with the second housing;
f) arranging the control electronics in the dry space of the first housing; and
g) connecting lines that conduct the measured values or measured signals of the sensor to the control electronics.

9. The method according to claim 8 , wherein the steps b), c), and d) are performed in alphabetic order.

10. The method according to claim 8 , wherein step b) is performed before step a).

11. The method according to claim 8 , wherein the steps b), c), and d) are performed in an order c), b), d).

12. The method according to claim 8 , wherein the steps b), c), and d) are performed in an order c), d), b).

Assignees

• Porsche Ag

Inventors

• Wachter Sebastian
• Fuchs Patrick

Classifications

• H05K5/061

  sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing · CPC title

• H05K5/069

  Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft · CPC title

• H05K5/067

  containing a dielectric fluid · CPC title

• H05K5/065

  sealed by encapsulation, e.g. waterproof resin forming an integral casing, injection moulding · CPC title

• H02M1/32

  Means for protecting converters other than automatic disconnection · CPC title