Busbar device and device

Abstract

The invention relates to a busbar arrangement (1) for connecting a first component (2) and a second component (3), the invention relates to a multi-phase current sensor, at least comprising a plurality of electrical conductors (4) for electrically transmitting a multi-phase current between a first component (2) and a second component (3), a measuring unit (5) for measuring the intensity of the current transmitted via each conductor (4), and a connection housing (6) for connecting the first component (2) to the second component (3), the conductor (4) extends through the connecting housing (6) and the at least one sensor (7) of the measuring unit (5) is arranged within the connecting housing (6).

Description

Technical Field

[0001] The invention relates to a busbar arrangement (also referred to as a busbar) which is provided for connecting a first (electrical) component and a second (electrical) component.

[0002] The invention further relates to an arrangement comprising a first electrical component having a first housing, a second electrical component having a second housing, and a busbar arrangement. Background Art

[0003] Such busbar arrangements are used in particular for connecting electrical components, preferably inverters and electric machines.

[0004] The busbar arrangement usually has a plurality of electrical conductors for electrically transmitting a multi-phase current between a first component and a second component. In known busbar arrangements, the conductors of the busbar are used to transmit electrical energy or power for driving an electric motor, wherein the transmission of signals between the electric motor and the inverter is carried out via separate electrical connecting lines. Via the connecting lines, signals of the electric motor, such as the temperature, rotational speed, rotor position, etc. of the electric motor, are transmitted to the inverter.

[0005] The connecting line is usually arranged spaced apart from the conductor.

[0006] Furthermore, the current conducted via the conductor is measured. This measurement is performed regularly within the inverter or within the housing of the inverter. Summary of the invention

[0007] The object of the present invention is to at least partially solve the problems mentioned with reference to the prior art. In particular, a busbar arrangement is to be proposed, by which a compact design of the arrangement can be achieved.

[0008] A busbar arrangement with the features of claim 1 and an arrangement with the features of claim 7 contribute to achieving these objects. Advantageous developments are the subject matter of the dependent claims. The features listed individually in the claims can be combined with one another in a technically meaningful manner and can be supplemented by explanatory facts from the description and / or details from the drawings, which illustrate further embodiments of the invention.

[0009] A busbar arrangement for connecting a first (electrical) component and a second (electrical) component is proposed. The busbar arrangement has at least a plurality of electrical conductors for electrically transmitting a multiphase current between the first component and the second component, a measuring unit for measuring the current intensity (in A [ampere]) transmitted via each conductor, and a connecting housing for connecting the first component to the second component. The conductors extend through the connecting housing, and at least one sensor of the measuring unit is arranged within the connecting housing.

[0010] In particular, it is then provided that otherwise separately laid connecting lines are arranged together with the electrical conductors.

[0011] In particular, the busbar arrangement comprises three conductors for transmitting three-phase current.

[0012] The first component is, for example, an inverter, and the second component is, for example, an electric motor or an electric motor. However, other components may also be connected via a busbar arrangement. In particular, direct current is converted into alternating current in the inverter and is transmitted to the electric motor via conductors.

[0013] The conductor is designed in particular for transmitting currents of up to 1,000 A, in particular 100 A to 1,000 A and / or 100 Arms [ampere root mean square] to 1,000 Arms or for electrical powers of up to 200 kW, in particular 50 kW to 200 kW.

[0014] In particular, the busbar arrangement is provided for arrangement in a motor vehicle, in particular for electrical contacting of a traction drive or an electric machine of the motor vehicle.

[0015] The sensor is used in particular to determine the intensity of the current transmitted via the respective conductor. In particular, a sensor is provided for each conductor. Alternatively, a sensor is provided for only one conductor or only two conductors.

[0016] The sensor is in particular a Hall sensor, which is arranged on the conductor in particular together with a shield. Such a sensor comes, for example, from the company Melexis, where it is called the Melexis IMC Hall Sensor. The shield is in particular U-shaped and serves to equalize the magnetic field generated by the current flowing through the conductor. The conductor extends through the gap of the U-shaped shield, wherein the sensor is also arranged in the gap.

[0017] In particular, each conductor extends from a first end arranged on the first component to a second end arranged on the second component, wherein both the first end and the second end are arranged outside the connection housing.

[0018] In particular, the first end is arranged on a first side of the connection housing and the second end is arranged on a second side of the connection housing. The first side of the connection housing in particular faces the first component and the second side faces the second component.

[0019] In particular, the measuring unit has a printed circuit board (PCB printed circuit board), which is arranged at least partially, preferably completely, within the connection housing.

[0020] In particular, an EMC filter (filter for electromagnetic compatibility) is arranged on the printed circuit board. In particular, electrical interference influences are filtered out by the filter.

[0021] In particular, at least one sensor is arranged on the printed circuit board.

[0022] In particular, at least one conductor extends along the surface of the circuit board and / or is optionally fastened to the circuit board via an insulating element. In particular, all conductors extend along the surface of the circuit board, wherein the conductors are arranged spaced apart from one another along the surface of the circuit board. In particular, the circuit board is designed to be flat, so that the conductors are arranged in a common plane at least in the region of the circuit board.

[0023] In particular, the EMC filter is arranged on the circuit board between at least two conductors. The circuit board in particular extends from at least one conductor via the EMC filter at least to at least one other conductor. Thus, in particular, a particularly compact busbar arrangement can be realized. In particular, the signals of the second component (at least the temperature or the rotational speed, or the rotor position of the rotor, etc.) are evaluated by the measuring unit. These signals can be protected from interference effects, for example, by the EMC filter, so that these signals can be better evaluated and can continue to be used to control the first component.

[0024] In particular, the measuring unit has a first electrical connection for connecting to a first component and a second electrical connection for connecting to a second component, wherein these connections are arranged outside the connection housing. These connections are used in particular for transmitting electrical signals or data.

[0025] In particular, the transmission of signals between the first component and the second component takes place via these connections. The measuring unit and the connection in particular form or replace an electrical connection line which is otherwise separated or arranged separately from the conductor. Via the connection and the measuring unit, in particular signals of the second component (e.g. the motor), such as the temperature, the rotational speed, the rotor position, etc. of the motor, are transmitted to the first component (e.g. the inverter).

[0026] In particular, the first connection is arranged on a first side of the connection housing and the second connection is arranged on a second side of the connection housing. In particular, the connections are arranged between the conductors along the extension of the circuit board.

[0027] In particular, at least one joint is arranged between two ends of conductors arranged adjacent to each other. In particular, the first joint is arranged between the first ends and the second joint is arranged between the second ends of the corresponding same conductors. Alternatively, the joint can also be arranged adjacent to the corresponding outermost conductor.

[0028] In particular, a plurality of conductors extend parallel to one another at least in the region of the printed circuit board. Alternatively, at least one of the conductors can extend obliquely relative to at least one other conductor of the plurality of conductors at least in the region of the printed circuit board.

[0029] In particular, the first joint and the second joint are arranged on different sides of the conductor. That is, for example, the first joint is arranged between the first ends of the first conductor and the second conductor, wherein the second joint is arranged adjacent to the second end of the outermost first conductor.

[0030] In particular, the connection housing is mainly used to protect a circuit board on which at least one sensor and a measuring unit are arranged, and an EMC filter is arranged if necessary. Since the conductor extends from the first component to the second component, the connection housing particularly seals the passage opening of the conductor (and the connection part of the connector) in the first housing and the second housing.

[0031] In particular, a separate connection means (e.g. a screw or the like) is provided, via which the first component is connected to the second component. That is, in particular, the connection housing is not used to fasten the first component to the second component (or vice versa), but is mainly used for the sealing connection of the two housings, so that dirt cannot enter the housing and / or the connection housing via the passage of the conductor.

[0032] A device is also proposed, which comprises at least a first electrical component having a first housing, a second electrical component having a second housing, and the busbar device described. The first housing and the second housing are connected to each other via a connecting housing.

[0033] In particular, the connecting housing is connected to the first housing and the second housing in a manner that is at least dustproof with respect to the environment of the device.

[0034] In particular, the connecting housing is connected to the first housing and the second housing in an at least liquid-tight or gas-tight manner with respect to the environment of the device.

[0035] In particular, the electrical signal between the first component and the second component can only be transmitted via the busbar device. That is, in particular, no additional electrical connection (for transmitting current or electrical signals or data) is provided between these components, thereby enabling a compact device.

[0036] In particular, the first component is an inverter and the second component is an electric motor.

[0037] Discussions on the arrangement can in particular be transferred to the busbar arrangement and vice versa.

[0038] The use of indefinite articles ("a" and "an"), especially in the claims and in the description reflecting the claims, should be understood as such and not as a numeral. Thus, a concept or component introduced accordingly should be understood as existing at least once and, in particular, also being able to exist multiple times.

[0039] As a precaution, it should be pointed out that the numerals used here ("first", "second", ...) are primarily (only) used to distinguish between a plurality of similar objects, variables or processes, i.e., in particular, there is no mandatory pre-determination of the correlation and / or sequence of these objects, variables or processes relative to one another. If correlation and / or sequence is required, this is explicitly stated here or the result is obvious to a person skilled in the art when studying the specifically described design. If components can occur multiple times ("at least one"), the description of one of these components can also apply to all or part of most of these components, but this is not mandatory. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The invention and the technical field are explained in detail below with the aid of the drawings. It should be noted that the invention is not limited to the embodiments mentioned. In particular, it should be noted that the drawings and in particular the dimensional ratios shown are only schematic. Among them:

[0041] Figure 1 A known arrangement of an inverter and an electric motor is shown;

[0042] Figure 2 The device is shown in a perspective view;

[0043] Figure 3 Another perspective view shows Figure 2 Devices;

[0044] Figure 4 The side view shows the Figure 2 and Figure 3 Devices;

[0045] Figure 5 The busbar arrangement is shown in perspective view;

[0046] Figure 6 Shown according to Figure 5 Exploded view of the busbar device;

[0047] Figure 7 The side view shows the Figure 5 and Figure 6 Busbar device;

[0048] Figure 8 The perspective diagram shows the Figures 5 to 7 Busbar device;

[0049] Fig. 9 Another busbar arrangement is shown in a first side view;

[0050] Fig.10 The second side view shows Fig. 9 another busbar device; and

[0051] Fig.11 The perspective diagram shows the Fig. 9 and Fig.10 Another busbar device. DETAILED DESCRIPTION

[0052] Figure 1 A known arrangement 14 of an inverter (first component 2) and an electric motor (second component 3) is shown. The arrangement 14 comprises a first electric component 2 having a first housing 15, a second electric component 3 having a second housing 16, and a busbar arrangement 1. The first housing 15 is connected to the busbar arrangement 1 via a connecting housing 6 (see Figure 3 and Figures 5 to 8 ) is connected to the second shell 16.

[0053] The busbar arrangement 1 has a plurality of electrical conductors 4 for electrically transmitting a multiphase current between a first component 2 and a second component 3. In the known busbar arrangement 1, the conductors 4 of the busbar are used to transmit electrical energy or power for driving the motor, wherein the transmission of the signal 18 between the motor and the inverter is carried out via a separate electrical connection line 19. Via the connection line 19, for example, the signal 18 of the motor, such as the temperature, rotation speed, rotor position, etc. of the motor, is transmitted to the inverter.

[0054] The connecting line 19 is arranged spaced apart from the conductor 4 or the connecting housing 6 .

[0055] Furthermore, the current conducted via the conductor 4 is measured. This measurement is performed regularly within the inverter or within the first housing 15 of the inverter.

[0056] Figure 2 The device 14 is shown in a perspective view. Figure 3 Another perspective view shows Figure 2 Device 14. Figure 4 The side view shows the Figure 2 and Figure 3 Device 14. Figure 5 The busbar arrangement 1 is shown in a perspective view. Figure 6 Shown according to Figure 5 An exploded view of the busbar device 1. Figure 7 The side view shows the Figure 5 and Figure 6 The busbar device 1. Figure 8 The perspective diagram shows the Figures 5 to 7The busbar device 1 is described below. Figures 2 to 8 . Reference Figure 1 's discussion.

[0057] The device comprises a first electric component 2 (inverter) having a first housing 15, a second electric component 3 (electric motor) having a second housing 16, and a busbar arrangement 1. The first housing 15 is connected to the second housing 16 via a connecting housing 6 of the busbar arrangement 1. The connecting housing 6 has two seals 22 (O-rings) on the outside, by which the corresponding openings at the first housing 15 and the second housing 16 are sealed relative to the environment 17.

[0058] The busbar arrangement 1 has a plurality of electrical conductors 4 for electrically transmitting a multiphase current between a first component 2 and a second component 3, a measuring unit 5 for measuring the intensity of the current transmitted via each conductor 4 (in A [ampere]), and a connecting housing 6 for connecting the first component 2 with the second component 3. The conductors 4 extend through the connecting housing 6, and at least one sensor 7 of the measuring unit 5 is arranged inside the connecting housing 6.

[0059] It can be seen that the separately laid connecting line 19 (see Figure 1 ) are arranged here together with the electrical conductor 4 .

[0060] The busbar arrangement 1 comprises three conductors 4 for transmitting three-phase current.

[0061] The sensor 7 serves to determine the intensity of the current transmitted via the respective conductor 4. For each conductor 4 a sensor 7 is provided.

[0062] Each sensor 7 is a Hall sensor, which is arranged at the conductor 4 together with a shield 20. Such sensors come from the company Melexis, for example, where they are called Melexis IMC Hall sensors. The shield 20 is U-shaped and serves to equalize the magnetic field generated by the current flowing through the conductor 4. The conductor 4 extends through the gap 21 of the U-shaped shield 20, wherein the corresponding sensor 7 is also arranged in the gap 21.

[0063] Each conductor 4 extends from a first end 8 arranged at the first component 2 to a second end 9 arranged at the second component 3, wherein the first end 8 and the second end 9 are arranged outside the connection housing 6. The first end 8 is arranged on a first side of the connection housing 6, and the second end 9 is arranged on a second side of the connection housing 6. The first side of the connection housing 6 faces the first component 2, and the second side faces the second component 3.

[0064] The measuring unit 5 has a printed circuit board 10 (PCB) which is arranged at least partially in the connection housing 6. The circuit board 10 is designed to be flat, so that the conductors 4 are arranged in a common plane at least in the region of the circuit board 10.

[0065] The conductor 4 is arranged to be separated from the circuit board 10 by the insulating member 23 or to be surrounded by a shielding film (see Figure 5 and Figure 6 ). It is not mandatory to provide the insulating element 23. In the case of 400 volt applications, the insulating element 23 can also be omitted.

[0066] An EMC filter 11 (filter for electromagnetic compatibility) is arranged on the printed circuit board 10 . In particular, electrical interference influences are filtered out by the EMC filter 11 .

[0067] Signals 18 of the second component 3 (at least the temperature or the rotational speed, or the rotor position of the rotor, etc.) can be evaluated by the measuring unit 10. These signals 18 can be protected from interference influences, for example, by an EMC filter 11, so that they can be better evaluated and can be further used to control the first component 2.

[0068] The sensor 7 is arranged on the circuit board 10. The conductor 4 extends from the first end 8 along the surface of the circuit board 10 to the second end 9. The circuit board 10 is connected to the conductor 4 at least via the connection housing 6. The conductors 4 are arranged to be spaced apart from each other along the surface of the circuit board 10.

[0069] The EMV filter 11 is arranged between two conductors 4 on the circuit board 10. The circuit board 10 extends from one conductor 4 via the EMV filter 11 at least to the other conductor 4 (see, for example, Figure 5 ). A particularly compact busbar arrangement 1 can thus be achieved.

[0070] In particular, the measuring unit 10 has a first electrical connection 12 for connection to the first component 2 and a second electrical connection 13 for connection to the second component 3, wherein the connections 12, 13 are arranged outside the connection housing 6. The connections 12, 13 are used to transmit electrical signals 18 or data.

[0071] The first connection 12 is arranged on a first side of the connection housing 6 and the second connection 13 is arranged on a second side of the connection housing 6. The connections 12, 13 are arranged between the conductors 4 along the course of the circuit board 10.

[0072] The joints 12, 13 are arranged respectively between the two ends 8, 9 of the conductors 4 arranged adjacent to each other (see Figure 2 , Figure 3 as well as Figures 5 to 8). The first joint 12 is arranged between the first ends 8 and the second joint 13 is arranged between the second ends 9 of the corresponding same conductors 4. Alternatively, the joints 12, 13 can also be arranged adjacent to the corresponding outermost conductors 4 (see for example Figure 4 ).

[0073] The majority of conductors 4 extend parallel to one another in the region of the printed circuit board 10 .

[0074] In the device 14 , the connecting housing 6 is connected to the first housing 15 and the second housing 16 in an at least dust-tight, liquid-tight, and air-tight manner with respect to an environment 17 of the device 14 .

[0075] The electrical signal 18 can be transmitted between the first component 2 and the second component 3 only via the busbar device 1, because there is no other connection between these components. That is, no additional electrical connection (for transmitting current or electrical signals or data) is provided between these components 2, 3, so that a compact device 14 can be realized.

[0076] Fig. 9 A further busbar arrangement 1 is shown in a first side view. Fig.10 The second side view shows Fig. 9 Another busbar device 1. Fig.11 The perspective diagram shows the Fig. 9 and Fig.10 Another busbar device 1. The following describes Figures 9 to 11 . Reference Figures 2 to 8 's discussion.

[0077] Different from based on Figures 2 to 8 In the busbar arrangement of the present invention, one of the conductors 4 extends obliquely relative to the other two conductors 4 at least in the area of ​​the circuit board 10. The first joint 12 and the second joint 13 are arranged on different sides of the obliquely extending conductor 4. The first joint 12 is arranged between the first end 8 of the first conductor 4 (the conductor 4 arranged on the left) and the second conductor 4 (the conductor 4 in the middle), wherein the second joint 13 is arranged adjacent to the second end 9 of the outermost first conductor 4.

[0078] Reference Symbols List:

[0079] 1 Busbar device

[0080] 2 First component

[0081] 3. Second component

[0082] 4 conductors

[0083] 5 measuring units

[0084] 6Connection housing

[0085] 7 Sensors

[0086] 8 First end

[0087] 9 Second end

[0088] 10 Circuit Board

[0089] 11EMV filter

[0090] 12 First joint

[0091] 13 Second connector

[0092] 14 Installation

[0093] 15 First Shell

[0094] 16 Second shell

[0095] 17 Environment

[0096] 18 Signals

[0097] 19 Connection lines

[0098] 20 shielding parts

[0099] 21 Gap

[0100] 22 Seals

[0101] 23 Insulation parts.

Claims

1. A busbar device (1) for connecting a first component (2) and a second component (3), comprising at least: a plurality of electrical conductors (4) for electrically transmitting a multi-phase current between the first component (2) and the second component (3), a measuring unit (5) for measuring the intensity of the current transmitted via each conductor (4), and a connecting housing (6) for connecting the first component (2) to the second component (3), wherein: The conductor (4) extends through the connecting housing (6) and at least one sensor (7) of the measuring unit (5) is arranged within the connecting housing (6).

2. The busbar arrangement (1) according to claim 1, wherein: Each conductor (4) extends from a first end (8) arranged on the first component (2) to a second end (9) arranged on the second component (3), wherein both the first end (8) and the second end (9) are arranged outside the connection housing (6).

3. The busbar arrangement (1) according to any one of the preceding claims, wherein: The sensor (7) is a Hall sensor.

4. The busbar arrangement (1) according to any one of the preceding claims, wherein: The measuring unit (5) has a printed circuit board (10) which is arranged at least partially in a connecting housing (6).

5. The busbar arrangement (1) according to claim 4, wherein: The EMV filter (11) is arranged on the circuit board (10).

6. The busbar arrangement (1) according to any one of the preceding claims, wherein: The measuring unit (5) has a first connection (12) for connecting to a first component (2) and a second connection (13) for connecting to a second component (3), wherein the connections (12, 13) are arranged outside a connection housing (6).

7. A device (14) comprising at least: A first electrical component (2) having a first housing (15), a second electrical component (3) having a second housing (16), and a busbar arrangement (1) according to any one of the preceding claims, wherein the first housing (15) and the second housing (16) are connected to each other via a connecting housing (6).

8. The device (14) according to claim 7, wherein: The connecting housing (6) is connected to the first housing (15) and the second housing (16) in a manner that is at least dust-proof relative to the environment (17) of the device (14).

9. The device (14) according to any one of the preceding claims 7 and 8, wherein: The connecting housing (6) is connected to the first housing (15) and the second housing (16) in an at least liquid-tight or gas-tight manner relative to the environment (17) of the device (14).

10. The device (14) according to any one of the preceding claims 7 to 9, wherein: The electrical signal (18) between the first component (2) and the second component (3) can be transmitted only via the busbar device (1).

11. The device (14) according to any one of the preceding claims 7 to 10, wherein: The first component (2) is an inverter and the second component (3) is an electric motor.

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