Electronics unit

Abstract

The present invention relates to an electronic unit (10) comprising a choke unit (12) which has a first choke element (14) and a second choke element (16), wherein the choke unit (12) is designed to form a common-mode choke, wherein the electronic unit (10) has a first printed circuit board unit (18) and a second printed circuit board unit (20), wherein the choke unit (12) is designed to form a signal- and / or energy-conducting connection with the first printed circuit board unit (18), wherein the second printed circuit board unit (20) has at least one recess (22), wherein the choke unit (12) projects through the recess (22) in order to space the first choke element (14) and the second choke element (16) from the first printed circuit board unit (18) and from the second printed circuit board unit (20).

Description

State of the art

[0001] The present invention relates to an electronic unit and a vehicle.

[0002] Currently, a wide variety of solutions exist for mounting choke units, especially common-mode chokes, in the electronics sector. Due to increasing installation space density and higher quality requirements, the demand for innovative and robust electronic units is constantly growing.

[0003] The continuous reduction of weight in the vehicle sector to lower fuel consumption, as well as increasing competition, is creating cost pressure, leading to a greater demand for cheaper and more efficient vehicle components. Disclosure of the invention

[0004] The electronic unit according to the invention, with the features of claim 1, has the advantage over known devices that the space required for the choke unit within the electronic unit can be significantly reduced by spacing the choke unit away from a printed circuit board. Furthermore, spacing the choke unit away from the printed circuit board components and connecting the choke unit to a cooling channel further reduces the thermal load on the choke unit. An integration of the shielding for AC filtering is advantageous, allowing various thermal and electrical requirements to be met. Furthermore, the separate design of the choke unit within the electronic unit preferably enables a variety of mounting concepts. In particular, the creation of different circuit board levels can be eliminated or, depending on the arrangement of the choke unit, integrated into different potting steps or filling with insulating material.Preferably, the choke unit can be potted in a separate housing and subsequently installed in a charger or similar device. Preferably, the potting material can be modified without altering the fundamental design of the printed circuit board units. Preferably, the available space can be utilized more efficiently, thus further improving the power density of an electronic component, such as a charger.

[0005] According to the invention, this is achieved by the electronic unit having a choke unit comprising a first choke element and a second choke element, wherein the choke unit is configured to form a common-mode choke, wherein the electronic unit has a first printed circuit board unit and a second printed circuit board unit, wherein the choke unit is configured to form a signal and / or energy-conducting connection with the first printed circuit board unit, wherein the second printed circuit board unit has at least one recess, wherein the choke unit projects through the recess to space the first choke element and the second choke element away from the first printed circuit board unit and from the second printed circuit board unit.

[0006] In other words, direct contact between the choke elements and the circuit board assembly is unnecessary, since the choke unit, which can be designed as a separate component, isolates the common-mode choke from the circuit board components. Specifically, two electrically shielded common-mode chokes can be designed as a single module, allowing decoupling from the circuit board assembly and flexible placement within the power electronics, where the module can be positioned closer to the cooling geometry. Preferably, two double chokes can be designed as a separate module that can be integrated into a charger or similar device with a modular design, thus enabling an installation position independent of a filter circuit board.This allows for more efficient use of installation space within the device and increases the capacitance of the chokes to improve filtering properties. Furthermore, decoupling the chokes from the circuit board assembly enables flexible installation within the device and allows for positioning the chokes close to a cooling area of ​​the charger or similar component. Preferably, the electrical shielding of the chokes from each other can be achieved using a sheet metal construction or similar material, thereby reducing the number of component placement steps on the circuit board. This reduces the weight of the circuit board assembly, as the chokes are no longer directly attached to the circuit board. Even more preferably, the chokes can be flexibly arranged within the device to allow for various connection options, particularly via potting.

[0007] The dependent claims describe preferred embodiments of the invention.

[0008] Preferably, the choke unit has a first contact element and a second contact element, wherein the first contact element is arranged between the first printed circuit board unit and the first choke element to form at least part of the signal and / or energy-conducting connection, wherein the second contact element is arranged between the first printed circuit board unit and the second choke element to form at least part of the signal and / or energy-conducting connection.

[0009] An advantage of this embodiment is that one choke unit can be used for a variety of different electronic devices, requiring only the appropriate adaptation of the contact elements. Preferably, the contact elements can be connected to the printed circuit board unit, particularly by means of through-hole contacts. Even more preferably, a contact element can comprise a plurality of conductors or similar components.

[0010] Preferably, the throttle unit has a mounting element designed to connect the first throttle element, the second throttle element, the first contact element and / or the second contact element to simplify mounting the throttle unit on the electronic unit.

[0011] An advantage of this embodiment is that the position of the first throttle element and the second throttle element or the contact elements is defined by the mounting element, which can be, for example, a plastic housing or similar, in order to simplify, in particular, the insertion of the throttle unit into the electronic unit or similar.

[0012] Preferably, the electronic unit has a cooling structure and / or can be arranged on a cooling structure, wherein the throttle unit is configured to dissipate heat energy generated at the throttle unit to the cooling structure.

[0013] One advantage of this design is that the thermal stress on the circuit board unit can be significantly reduced, thus further improving the longevity of the electronic unit.

[0014] Preferably, the throttling unit, in particular the first throttling element or the second throttling element, is connected to the cooling structure by means of an insulating material in order to improve heat transfer between the throttling unit and the cooling structure.

[0015] An advantage of this embodiment is that heat transfer between the electronic unit or throttle unit and the cooling structure can be improved by simple means, such as overmolding or injection molding insulating material onto the first and / or second throttle element and / or the throttle unit. This can particularly involve a potting step in which the appropriate material can be applied to the first and / or second throttle element.

[0016] Preferably, the electronic unit has a shielding unit, wherein the shielding unit is configured to shield the first choke element, the second choke element and / or at least part of the signal and / or energy-conducting connection from each other.

[0017] An advantage of this embodiment is that interference within the choke unit and / or within the electronics unit can be further reduced, thus further improving the filtering effect of the electronics unit. The shielding unit can be designed, in particular, by means of a sheet metal construction or similar material.

[0018] Preferably, the shielding unit protrudes through the recess of the second printed circuit board unit and extends to and / or through the first printed circuit board unit.

[0019] One advantage of this embodiment is that the shielding unit can, in particular, reduce interference between the first choke element or the second choke element and the second circuit board unit.

[0020] Preferably, the electronic unit has a shielding element which is arranged between the first printed circuit board unit and the second printed circuit board unit, wherein the shielding element has a second recess through which the shielding unit protrudes.

[0021] An advantage of this embodiment is that a continuous shielding effect can be generated through the interaction of the shielding element and the shielding unit, in particular from the first and / or second choke element to the second circuit board unit.

[0022] Preferably, the electronic unit has a housing element, wherein the choke unit is at least partially arranged in the housing element, and wherein the shielding unit is configured to secure the choke unit in the housing element.

[0023] One advantage of this embodiment is that the shielding unit can be easily secured to the housing element, for example by means of a screw connection or similar, in order to secure or fix the shielding unit, especially in relation to the first circuit board unit.

[0024] Another aspect of the invention relates to a vehicle which has an electronic unit as described above and below. Brief description of the drawings

[0025] Exemplary embodiments of the invention are described in detail below with reference to the accompanying drawings. The drawing shows: Fig. 1 to 2b an electronic unit according to an embodiment, Fig. 3 a vehicle according to one embodiment. Embodiments of the invention

[0026] Preferably, all identical elements, units and / or steps in all figures are labelled with the same reference symbols.

[0027] Fig. Figure 1 shows an electronic unit 10 according to one embodiment. The electronic unit 10 has a choke unit 12, which has a first choke element 14 and a second choke element 16, wherein the choke unit 12 is configured to form a common-mode choke, wherein the electronic unit 10 has a first printed circuit board unit 18 and a second printed circuit board unit 20, wherein the choke unit 12 is configured to form a signal- and / or energy-conducting connection with the first printed circuit board unit 18, wherein the second printed circuit board unit 20 has at least one recess 22, wherein the choke unit 12 projects through the recess 22 to space the first choke element 14 and the second choke element 16 away from the first printed circuit board unit 18 and from the second printed circuit board unit 20.

[0028] As in the Fig. As shown in Figure 1, the first choke element 14 is contacted on the first printed circuit board unit 18 by means of a first contact element 24. More preferably, the second choke element 16 is contacted on the first printed circuit board unit 18 by means of a second contact element 26. Preferably, the choke unit 12 can have a mounting element 28 which positions, in particular, the first choke element 14, the second choke element 16, and especially the first contact element 24 and the second contact element 26 relative to each other, and which in particular forms a plastic housing or similar. More preferably, the electronic unit 10 can be arranged on a cooling structure 30, as shown in Figure 1. Fig. Figure 1 is shown. Preferably, an insulating material 32 can be arranged between the housing element 40 and the first choke element 14 or the second choke element 16 to improve heat transfer. Preferably, the electronic unit 10 has a shielding unit 34, which in particular shields the first choke element 14 from the second choke element 16. Preferably, the shielding unit 34 can be arranged as shown in the Fig. As shown in Figure 1, the shielding element 34 extends through the recess 22 of the second printed circuit board unit 20 and extends to and / or through the first printed circuit board unit 18. A shielding element 36, which has a second recess 38, can preferably be arranged between the first printed circuit board unit 18 and the second printed circuit board unit 20. Preferably, the shielding element 34 can project through the second recess 38.

[0029] Fig. Figure 2a shows an electronic unit 10 according to one embodiment. The electronic unit 10 has a choke unit 12 which projects through the second circuit board unit 20 and is attached to the first circuit board unit 18. As shown in the Fig. As can be seen in Figure 2a, the electronic unit 10 has a cooling structure 30. As shown in the Fig. As shown in Figure 2a, the first throttle element 14 and the second throttle element 16 are directly mounted to a housing of the electronic unit 10, or an insulating material 32 is arranged between the two components and the housing. This allows heat transfer between the throttle unit 12 and the cooling structure 30.

[0030] Fig. Figure 2b shows an electronic unit 10 according to one embodiment. The electronic unit 10 has a similar configuration to that already described with regard to the Fig. 2a was described. Fig. As shown in Figure 2b, the electronic unit 10 has a housing element 40, wherein an insulating material 32 is arranged between the first throttle element 14 and the second throttle element 16 and within the housing element 40. Thus, the heat transfer between the throttle unit 12 and the cooling structure 30 can be improved, and the ease of assembly is also increased by the housing element 40.

[0031] Fig. Figure 3 shows a vehicle 100 according to one embodiment. The vehicle 100 has an electronic unit 10, as described above and below.

Claims

[1] comprising electronic unit (10): a choke unit (12) comprising a first choke element (14) and a second choke element (16), wherein the choke unit (12) is configured to form a common-mode choke, wherein the electronic unit (10) comprises a first printed circuit board unit (18) and a second printed circuit board unit (20), wherein the choke unit (12) is configured to form a signal and / or energy-conducting connection with the first printed circuit board unit (18), wherein the second printed circuit board unit (20) has at least one recess (22), wherein the choke unit (12) projects through the recess (22) to space the first choke element (14) and the second choke element (16) away from the first printed circuit board unit (18) and from the second printed circuit board unit (20). [2] Electronic unit (10) according to claim 1, wherein the choke unit (12) has a first contact element (24) and a second contact element (26), wherein the first contact element (24) is arranged between the first printed circuit board unit (18) and the first choke element (14) to form at least part of the signal and / or energy-conducting connection, wherein the second contact element (26) is arranged between the first printed circuit board unit (18) and the second choke element (16) to form at least part of the signal and / or energy-conducting connection. [3] Electronic unit (10) according to claim 2, wherein the throttle unit (12) has a mounting element (28) which is configured to connect the first throttle element (14), the second throttle element (16), the first contact element (24) and / or the second contact element (26) to simplify the mounting of the throttle unit (12) on the electronic unit (10). [4] Electronic unit (10) according to one of the preceding claims, wherein the electronic unit (10) has a cooling structure (30) and / or can be arranged on a cooling structure (30), wherein the throttle unit (12) is configured to dissipate heat energy generated at the throttle unit (12) to the cooling structure (30). [5] Electronic unit (10) according to claim 4, wherein the throttle unit (12), in particular the first throttle element (14) or the second throttle element (16), is connected to the cooling structure (30) by means of an insulating material (32) in order to improve heat transfer between the throttle unit (12) and the cooling structure (30). [6] Electronic unit (10) according to one of the preceding claims, wherein the electronic unit (10) comprises a shielding unit (34), wherein the shielding unit (34) is configured to shield the first choke element (14), the second choke element (16) and / or at least a part of the signal and / or energy-conducting connection from each other. [7] Electronic unit (10) according to claim 6, wherein the shielding unit (34) projects through the recess (32) of the second printed circuit board unit (20) and extends to and / or through the first printed circuit board unit (18). [8] Electronic unit (10) according to one of claims 6 to 7, wherein the electronic unit (10) has a shielding element (36) which is arranged between the first printed circuit board unit (18) and the second printed circuit board unit (20), wherein the shielding element (36) has a second recess (38) through which the shielding unit (34) projects. [9] Electronic unit (10) according to one of claims 6 to 8, wherein the electronic unit (10) has a housing element (40), wherein the choke unit (12) is at least partially arranged in the housing element (40), wherein the shielding unit (34) is configured to secure the choke unit (12) in the housing element (40). [10] Vehicle (100) comprising an electronic unit (10) according to any of the preceding claims.

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