Printed circuit board unit

Abstract

The present invention relates to a printed circuit board unit comprising a plurality of substrate layers, a conductor element, a Hall sensor unit, wherein the Hall sensor unit is configured to measure the conductor element at a first location and a second location, wherein the printed circuit board unit comprises a ceramic element, wherein the ceramic element is arranged between a first substrate layer and a second substrate layer of the plurality of substrate layers, wherein the ceramic element is configured to position the first substrate layer and the second substrate layer in a predetermined orientation relative to each other.

Description

Prior ArtThe present invention relates to a printed circuit board unit and a vehicle.At present, there are a large number of different solutions for the construction of printed circuit board units in the vehicle sector. As a result of the increasing number of functions in printed circuit board units and the increased quality and power requirements, the need for innovative and robust methods for constructing printed circuit board units is continually increasing.The steady weight reduction in the vehicle sector for reducing consumption and the increasing competition provides cost pressure, so that more favorable and more efficient components for vehicles are demanded more strongly.Disclosure of the InventionThe printed circuit board unit according to the invention having the features of claim 1 has the advantage over the known ones that the high-voltage insulation is simplified and, furthermore, magnetic fields can be measured accurately and the position tolerances of substrate layers with respect to one another can also be improved. A further advantage is that the position between the substrate layers is substantially constant on account of the ceramic element, in particular over the service life of the printed circuit board unit.This is achieved according to the invention in that the printed circuit board unit has a multiplicity of substrate layers, a conductor element and a Hall sensor unit, wherein the Hall sensor unit is configured to measure the conductor element at a first location and a second location, wherein the printed circuit board unit has a ceramic element, wherein the ceramic element is arranged between a first substrate layer and a second substrate layer of the multiplicity of substrate layers, wherein the ceramic element is configured to position the first substrate layer and the second substrate layer in a predetermined orientation with respect to one another.In other words, a printed circuit board unit can have a multiplicity of substrate layers, wherein at least one ceramic element is arranged between two substrate layers in order to keep an alignment of the substrate layers with respect to one another constant and thus to simplify the measurement of the conductor element by means of the Hall sensor unit and to keep it constant over the operating duration of the printed circuit board unit. Preferably, the conductor element can be a copper track or the like on the substrate layer. Further preferably, the Hall sensor unit can comprise a single Hall sensor element as well as a plurality of Hall sensor elements. Preferably, a first Hall sensor element can be arranged at the first location and a second Hall sensor element can be arranged at the second location.The dependent claims show preferred developments of the invention.The predetermined orientation is preferably configured to keep an alignment of the Hall sensor unit with respect to the conductor element constant over an operating duration of the printed circuit board unit.An advantage of this embodiment is that the resulting magnetic field of the printed circuit board unit, in particular with the conductor element, does not change over the operating duration of the printed circuit board unit and the measured sensor values are thus reliable.Further preferably, the ceramic element has a first section and a second section, wherein the conductor element is arranged between the first section and the second section in order to achieve the predetermined positioning.An advantage of this embodiment is that the position between the substrate layers can be improved by arranging the ceramic element on the conductor element on both sides.Further preferably, the conductor element comprises a copper track, wherein a first extension height of the copper track and a second extension height of the first section and / or of the second section are substantially the same.An advantage of this embodiment is that the density of the printed circuit board unit or the power density of the printed circuit board unit can be increased and at the same time the predetermined orientation between the substrate layers can be maintained. In this context, essentially the same can mean, in particular, a deviation of + / - 15%, in particular manufacturing-related tolerances.More preferably, the ceramic element forms at least one line on one of the plurality of substrate layers.An advantage of this embodiment is that the application of the ceramic element is significantly simplified, since this can be extruded onto the substrate layer.The ceramic element further preferably has at least one material from the group comprising: aluminum nitrate, ceramic and / or silicon nitrite.An advantage of this embodiment is that the material can be adapted depending on the respective usage scenario of the printed circuit board unit.Further preferably, the Hall sensor unit is arranged on one of the plurality of substrate layers depending on the predetermined positioning, so that a substantially identical magnetic field distribution is present at the first location and the second location.An advantage of this embodiment is that the measurement of a resulting magnetic field on the conductor element can be significantly simplified.Further preferably, the first location and the second location are arranged at a respective position of maximum magnetic flux of the conductor element.An advantage of this embodiment is that the significance of the measurement values of the Hall sensor unit can be improved.Further preferably, the Hall sensor unit is configured to generate a calibration for the first location and / or the second location as a function of the predetermined positioning, wherein the Hall sensor unit is configured to adapt a measured value which was generated at the first location and / or at the second location, based on the calibration.An advantage of this embodiment is that the measured values can be adjusted accordingly for the individual construction of the printed circuit board unit. Further preferably, the calibration can take into account in particular additional factors such as temperature, supply voltage, linear or non-linear magnetic fields in the sensor unit or the like.A further aspect of the invention relates to a vehicle which has a printed circuit board unit as described above and below.Brief Description of the DrawingsHereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings. In the drawing, the following is: FIGS. 1 and 2 show a printed circuit board unit according to one embodiment, FIG. 3 illustrates a vehicle according to an embodiment.Embodiments of the InventionAll the same elements, units and / or steps in all the figures are preferably provided with the same reference numerals.FIG. 1 shows a printed circuit board unit 10 according to an embodiment. The circuit board unit 10 includes a plurality of substrate layers 12, a conductor element 14, and a Hall sensor unit 16. The Hall sensor unit 16 is preferably configured to measure the conductor element 14 at a first location 18 and a second location 20, wherein the printed circuit board unit 10 has a ceramic element 22, wherein the ceramic element 22 is arranged between a first substrate layer 24 and a second substrate layer 26 of the plurality of substrate layers 12, wherein the ceramic element 22 is configured to position the first substrate layer 24 and the second substrate layer 26 with respect to one another in a predetermined orientation 28.More preferably, the ceramic element 22 may have a first portion 30 and a second portion 32, wherein the conductor element 14 is disposed between the first portion 30 and the second portion 32 to achieve the predetermined positioning 28, as shown in FIG. 1. preferably, the plurality of substrate layers 12 may include both a first substrate layer 14, a second substrate layer 24, and a plurality of further substrate layers. Preferably, at least one conductor element and at least one ceramic element 22 can be arranged between each of the plurality of substrate layers 12.FIG. 2 shows a printed circuit board unit 10 according to an embodiment. The printed circuit board unit 10 has a similar structure to the printed circuit board unit 10 of FIG. 1, and generation of a magnetic field 200 on the printed circuit board unit 10 is illustrated in FIG. 2. Preferably, the magnetic field 200 may have a weak portion 202 as well as a strong portion 208. Preferably, the first location 16 and the second location 18 are arranged in the strong part 208 of the magnetic field 200 in order to be able to measure a maximum magnetic flux 204 at the first location 18 and also to be able to measure a maximum magnetic flux 206 at the second location 20.FIG. 3 shows a vehicle 100 according to an embodiment. The vehicle 100 preferably has a printed circuit board unit 10, as described above and below.

Claims

Printed circuit board unit (10), comprising: - a plurality of substrate layers (12), - a conductor element (14), - a Hall sensor unit (16), - wherein the Hall sensor unit (16) is configured to measure the conductor element (14) at a first location (18) and a second location (20), - wherein the printed circuit board unit (10) comprises a ceramic element (22), wherein the ceramic element (22) is arranged between a first substrate layer (24) and a second substrate layer (26) of the plurality of substrate layers (12), wherein the ceramic element (22) is configured to position the first substrate layer (24) and the second substrate layer (26) with respect to one another in a predetermined orientation (28).Printed circuit board unit (10) according to Claim 1, - wherein the predetermined orientation (28) is configured to keep an orientation of the Hall sensor unit (16) with respect to the conductor element (14) constant over an operating duration of a printed circuit board unit (10).Printed circuit board unit (10) according to one of the preceding claims, - wherein the ceramic element (22) has a first section (30) and a second section (32), - wherein the conductor element (14) is arranged between the first section (30) and the second section (32) in order to achieve the predetermined positioning (28).Printed circuit board unit (10) according to Claim 3, - wherein the conductor element (14) has a copper track, - wherein a first extension height of the copper track and a second extension height of the first section (30) and / or of the second section (32) are substantially the same.Printed circuit board unit (10) according to one of the preceding claims, - wherein the ceramic element (22) forms at least one line on one of the plurality of substrate layers (12).Printed circuit board unit (10) according to one of the preceding claims, - wherein the ceramic element (22) has at least one material from the group comprising: aluminium nitrate, ceramic and / or silicon nitrite.Printed circuit board unit (10) according to one of the preceding claims, - wherein the Hall sensor unit (16) is arranged on one of the plurality of substrate layers (12) as a function of the predetermined positioning (28), such that a substantially identical magnetic field distribution is present at the first location (18) and the second location (20).Printed circuit board unit (10) according to one of the preceding claims, - wherein the first location (18) and the second location (20) are arranged at a respective position of maximum magnetic flux of the conductor element (14).Printed circuit board unit (10) according to one of the preceding claims, - wherein the Hall sensor unit (16) is configured to generate a calibration for the first location (18) and / or the second location (20) as a function of the predetermined positioning (28), - wherein the Hall sensor unit (16) is configured to adapt a measurement value which was generated at the first location (18) and / or at the second location (20), based on the calibration.Vehicle (100) comprising a printed circuit board unit (10) according to one of the preceding claims.

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