US-12625169-B2 - Magnetic coreless current sensor module

Abstract

A magnetic coreless current sensor module for measuring an electric current flowing in a busbar, wherein the current sensor module comprises an electronic component which is configured for the measurement of current, an electrically insulating encapsulation, in which the electronic component is at least partially encapsulated, wherein the electrically insulating encapsulation comprises at least one connecting hole for connecting to the busbar, and at least one press-fit element for connecting the encapsulation to the busbar using the introduction of the at least one press-fit element into the at least one connecting hole of the electrically insulating encapsulation and into at least one further connecting hole of the busbar.

Inventors

• Dietmar Spitzer
• Tomas REITER
• Gaetano FORMATO

Assignees

• INFINEON TECHNOLOGIES AG

Dates

Publication Date

20260512

Application Date

20230113

Priority Date

20220128

Claims (20)

1. 1 . A magnetic coreless current sensor module for measuring an electric current flowing in a busbar, wherein the magnetic coreless current sensor module comprises: an electronic component configured to measure the electric current; an electrically insulating encapsulation, in which the electronic component is at least partially encapsulated, wherein the electrically insulating encapsulation comprises at least one connecting hole for connecting the electrically insulating encapsulation to the busbar; and at least one press-fit element configured to connect the electrically insulating encapsulation to the busbar using an introduction of the at least one press-fit element into the at least one connecting hole of the electrically insulating encapsulation and into at least one further connecting hole of the busbar, wherein the at least one press-fit element comprises a deformable section which, for connecting the busbar to the electrically insulating encapsulation in at least one further connecting hole of the busbar, is compressible transversely to an insertion direction of the at least one press-fit element.
2. 2 . The magnetic coreless current sensor module as claimed in claim 1 , wherein the electrically insulating encapsulation comprises two connecting holes for connecting to the busbar, and the magnetic coreless current sensor module comprises two press-fit elements for introduction into the connecting holes, in order to connect the electrically insulating encapsulation to the busbar.
3. 3 . The magnetic coreless current sensor module as claimed in claim 1 , wherein the at least one press-fit element is selected from a group comprising at least one beveled contact, at least one hot-caulked plastic dome, and at least one rivet.
4. 4 . The magnetic coreless current sensor module as claimed in claim 1 , further comprising a circuit board, which is connected or connectable to the electronic component in an electrically conductive manner.
5. 5 . The magnetic coreless current sensor module as claimed in claim 4 , further comprising a plug-and/or-socket arrangement which, using a connecting cable, is configured for an electrically conductive coupling of the circuit board and the electronic component.
6. 6 . The magnetic coreless current sensor module as claimed in claim 4 , wherein the electrically insulating encapsulation is secured on or above the circuit board using at least one spacer between the electrically insulating encapsulation and the circuit board.
7. 7 . The magnetic coreless current sensor module as claimed in claim 1 , further comprising at least one electromechanical connection apparatus, which is released from the electrically insulating encapsulation, for a communication of a sensor signal which is generated by the electronic component based on the electric current.
8. 8 . A magnetic coreless current sensor module for measuring an electric current flowing in a busbar, wherein the magnetic coreless current sensor module comprises: an electronic component configured to measure the electric current; an electrically insulating encapsulation, in which the electronic component is at least partially encapsulated, wherein the electrically insulating encapsulation is configured to connect to the busbar; and at least one electromechanical connection apparatus, which is released from the electrically insulating encapsulation, configured for a communication of a sensor signal which is generated by the electronic component based on the electric current.
9. 9 . The magnetic coreless current sensor module as claimed in claim 8 , wherein the electromechanical connection apparatus comprises at least one at least partially funnel-shaped location channel configured for an accommodation of an electromechanical connection element.
10. 10 . The magnetic coreless current sensor module as claimed in claim 9 , further comprising the electromechanical connection element configured for electromechanical connection to the at least one electromechanical connection apparatus.
11. 11 . The magnetic coreless current sensor module as claimed in claim 10 , wherein the electromechanical connection element is an electromechanical press-fitting element.
12. 12 . The magnetic coreless current sensor module as claimed in claim 11 , wherein the electromechanical press-fitting element comprises a deformable section, which is compressible into at least one metal-lined connecting bushing of a circuit board, transversely to an insertion direction of the electromechanical press-fitting element.
13. 13 . The magnetic coreless current sensor module as claimed in claim 10 , wherein the electromechanical connection element is inserted or insertable into at least one metal-lined connecting bushing in a circuit board.
14. 14 . The magnetic coreless current sensor module as claimed in claim 13 , wherein the electromechanical connection element is configured for transmitting the sensor signal from the at least one electromechanical connection apparatus to the at least one metal-lined connection bushing of the circuit board.
15. 15 . The magnetic coreless current sensor module as claimed in claim 8 , wherein the electrically insulating encapsulation comprises at least one connecting hole for connecting the electrically insulating encapsulation to the busbar, and wherein the magnetic coreless current sensor module further comprises at least one press-fit element configured to connect the electrically insulating encapsulation to the busbar using an introduction of the at least one press-fit element into the at least one connecting hole of the electrically insulating encapsulation and into at least one further connecting hole of the busbar.
16. 16 . An electronic device, comprising: a magnetic coreless current sensor module for measuring an electric current flowing in a busbar, wherein the magnetic coreless current sensor module comprises: an electronic component configured to measure the electric current; an electrically insulating encapsulation, in which the electronic component is at least partially encapsulated, wherein the electrically insulating encapsulation comprises at least one connecting hole for connecting to the busbar; and at least one press-fit element configured to connect the electrically insulating encapsulation to the busbar using an introduction of the at least one press-fit element into the at least one connecting hole of the electrically insulating encapsulation and into at least one further connecting hole of the busbar; and the busbar having the at least one further connecting hole for connecting to the magnetic coreless current sensor module, wherein the electrically insulating encapsulation is connected or connectable to the busbar using the introduction of the at least one press-fit element into the at least one connecting hole of the electrically insulating encapsulation and into the at least one further connecting hole of the busbar, and wherein the at least one press-fit element comprises a deformable section which, for connecting the busbar to the electrically insulating encapsulation in at least one further connecting hole of the busbar, is compressible transversely to an insertion direction of the at least one press-fit element.
17. 17 . The electronic device as claimed in claim 16 , wherein the magnetic coreless current sensor module is arranged in a taper of the busbar.
18. 18 . The electronic device as claimed in claim 16 , wherein the magnetic coreless current sensor module is oriented along a main extension direction of the busbar.
19. 19 . The electronic device as claimed in claim 16 , wherein a main extension direction of the magnetic coreless current sensor module, or a main extension direction of only the electronic component of the magnetic coreless current sensor module, encloses an angle with a main extension direction of the busbar which differs from zero and is no more than 45°.
20. 20 . The electronic device as claimed in claim 16 , further comprising an inverter circuit which is electrically coupled to the busbar.

Description

CROSS REFERENCE TO RELATED APPLICATION This application claims priority to German Patent Application No. 102022101970.5 filed on Jan. 28, 2022, the content of which is incorporated by reference herein in its entirety. TECHNICAL FIELD Various implementations relate in general to current sensor modules for the measurement of an electric current flowing in a busbar, electronic devices, an application of a current sensor module or an electronic device, and a method for the retrofitting of a busbar with a magnetic coreless current sensor module. BACKGROUND For the control of a vehicle, for example, current sensors are required for the monitoring of electric circuit elements, which detect electric currents flowing in conductors and transmit signals detected to an evaluation apparatus. Conventionally, current sensors are employed for this purpose which comprise a current-carrying conductor (for example a busbar) wherein, using a magnetic core, the surrounding magnetic field is concentrated, and the strength of the electric current flowing in the conductor is concluded from the magnetic field strength. It has further been proposed that a current sensor with no magnetic core is screwed to a busbar. SUMMARY There is a potential requirement for a compact current sensor module having a high performance capability. According to one example implementation of a first aspect, a magnetic coreless current sensor module for measuring an electric current flowing in a busbar is provided, wherein the current sensor module includes an electronic component which is configured for the measurement of current, an electrically insulating encapsulation, in which the electronic component is at least partially encapsulated, wherein the electrically insulating encapsulation includes at least one connecting hole for connecting to the busbar, and at least one press-fit element for connecting the encapsulation to the busbar using the introduction of the at least one press-fit element into the at least one connecting hole of the electrically insulating encapsulation and into at least one further connecting hole of the busbar. According to a further example implementation of the first aspect, an electronic device is provided, which includes a magnetic coreless current sensor module having the above-mentioned features for measuring an electric current flowing in a busbar, and the busbar having at least one further connecting hole for connecting to the current sensor module, wherein the encapsulation is connected or connectable to the busbar using the introduction of the at least one mechanical press-fit element into the at least one connecting hole of the electrically insulating encapsulation and into the at least one further connecting hole of the busbar. According to one example implementation of a second aspect, a magnetic coreless current sensor module is provided for measuring an electric current flowing in a busbar, wherein the current sensor module includes an electronic component which is configured for the measurement of current, an electrically insulating encapsulation, in which the electronic component is at least partially encapsulated, wherein the electrically insulating encapsulation is configured for connecting to the busbar, and at least one electromechanical connection apparatus, which is released from the encapsulation, for the communication of a sensor signal which is detected by the electronic component. According to a further example implementation of the second aspect, an electronic device is provided which includes a magnetic coreless current sensor module having the above-mentioned features for measuring an electric current flowing in a busbar, wherein at least one electromechanical connection element is plugged or pluggable into the at least one electromechanical connection apparatus, and the busbar which is connected or connectable to the current sensor module. According to one further example implementation, a current sensor module according to the first aspect or according to the second aspect, or an electronic device according to the first aspect or according to the second aspect is employed for an application in the group included of a motor vehicle application, a rail vehicle application and an industrial application. According to one further example implementation, a method is provided for retrofitting a busbar with a magnetic coreless current sensor module, wherein the method includes the provision of a magnetic coreless current sensor module according to the first aspect, and the connection of the encapsulation to the busbar using the introduction of the at least one mechanical press-fit element into the at least one connecting hole of the encapsulation and into the at least one further connecting hole in the busbar. An example implementation according to the first aspect provides an advantage in that, on the grounds of its magnetic coreless configuration, the current sensor module can assume a compact and ligh