Electronics apparatus and production method for an electronics apparatus

• US 9,312,752 B2
• Filed: 12/30/2010
• Issued: 04/12/2016
• Est. Priority Date: 01/22/2010
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Sparka, Hartmut
• Primary Examiner(s): Gandhi, Jayprakash N
• Assistant Examiner(s): Buttar, Mandeep S
• Application Number:
  US13/574,297
• Publication Number:
  US 20130063907A1
• Time in Patent Office: 1,930 Days
• Field of Search: 361/730, 361/752, 298/32, 333/182, 333/183
• US Class Current: 1/1
• CPC Class Codes: H02M 1/44 Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
• CPC Class Codes: H05K 1/0233 Filters, inductors or a magnetic substance
• CPC Class Codes: H05K 1/0262 Arrangements for regulating voltages or for using plural voltages
• CPC Class Codes: H05K 1/142 Arrangements of planar printed circuit boards in the same plane, e.g. auxiliary printed circuit insert mounted in a main printed circuit
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.

Abstract

An electronics apparatus having a housing, an inverting device, a first circuit board connected to the inverting device via at least one line, and a second circuit board connected via a first galvanic connection to the first circuit board and connected via a second galvanic connection to at least component, and having a first filter situated on the first circuit board and upstream from the first galvanic connection, the first filter having a first discharge connection to the housing, and having a second filter situated on the second circuit board and downstream from the first galvanic connection, the second filter having a second discharge connection to the housing, and having a third filter situated on the second circuit board and upstream from the second galvanic connection, the third filter having a third discharge connection to the housing. A method for producing an electronics apparatus is also described.

Claims

1. An electronics apparatus, comprising:

a housing made at least partly of a conductive material;

an inverting device situated in the housing;

a first circuit board situated in the housing, the first circuit board being electrically connected to the inverting device via at least one line;

a second circuit board situated in the housing, the second circuit board being electrically connected to the first circuit board via a first galvanic connection, and the second circuit board being electrically connected via a second galvanic connection to at least one component of the electronics apparatus situated at least one of in the housing and on the housing;

a first filter having a first discharge connection to the housing, the first filter being situated on the first circuit board and upstream from the first galvanic connection;

a second filter having a second discharge connection to the housing, the second filter being situated on the second circuit board and downstream from the first galvanic connection; and

a third filter having a third discharge connection to the housing, the third filter being situated on the second circuit board and upstream from the second galvanic connection.

2. The electronics apparatus as recited in claim 1, wherein the second circuit board is electrically connected via the second galvanic connection to a third circuit board as the at least one component situated in the housing, the third circuit board being electrically connected via a third galvanic connection to at least one further component of the electronics apparatus situated at least one of in the housing and on the housing, and the electronics apparatus having a fourth filter having a fourth discharge connection to the housing, the fourth filter being situated on the third circuit board and downstream from the second galvanic connection, and a fifth filter having a fifth discharge connection to the housing, the fifth filter being situated on the third circuit board and upstream from the third galvanic connection.

3. The electronics apparatus as recited in claim 2, wherein at least one of the first filter, the second filter, the third filter, the fourth filter, and the fifth filter are fashioned as a T filter.

4. The electronics apparatus as recited in claim 1, wherein at least one of the first galvanic connections has a first ribbon cable, the second galvanic connection has a second ribbon cable, and the third galvanic connection has a third ribbon cable.

5. The electronics apparatus as recited in claim 4, wherein the at least one of the first ribbon cable, the second ribbon cable, and the third ribbon cable has at least one of a length in a range of from 5 cm through 50 cm, and a width in a range of from 3 cm through 12 cm.

6. The electronics apparatus as recited in claim 2, wherein at least one of:

i) the first filter, the first galvanic connection, and the second filter act together as a first pi filter, and ii) the third filter, the second galvanic connection, and the fourth filter act together as a second pi filter.

7. The electronics apparatus as recited in claim 2, wherein the electronics apparatus has at least one plate-type shielding unit that is made at least partly of a conductive material and is electrically connected to an associated discharge connection of at1east one of the first, second, third, fourth, and fifth filter, and also to the housing.

8. The electronics apparatus as recited in claim 2, wherein at least one of an inverter controlling is fashioned on the first circuit board, a control electronics being fashioned on the second circuit board, and a plug electronics being fashioned on the third circuit board.

9. The electronics apparatus as recited in claim 1, wherein the electronics apparatus is at least one of a power electronics system, a pulse inverter, a hybrid engine, and a DC/DC converter.

10. A method for producing an electronics apparatus, comprising:

situating an inverting device of a first circuit board and of a second circuit board in a housing made at least partly of a conductive material;

electrically connecting the inverting device to the first circuit board via at least one line;

electrically connecting the first circuit board to the second circuit board via a first galvanic connection;

electrically connecting the second circuit board via a second galvanic connection to at least one component of an electronics apparatus situated at (least one of in the housing and on the housing;

forming a first filter situated on the first circuit board having a first discharge connection to the housing, the first filter being situated upstream from the first galvanic connection;

forming a second filter situated on the second circuit board having a second discharge connection to the housing, the second filter being situated downstream from the first galvanic connection; and

forming a third filter situated on the second circuit board having a third discharge connection to the housing, the third filter being situated upstream from the second galvanic connection.