阅读说明：本技术 具有多相功率半导体模块的功率电子组件 (Power electronic component with multiphase power semiconductor module ) 是由 A·摩尔 J·斯泰格 于 2021-04-27 设计创作，主要内容包括：本申请提出了一种功率电子组件,其具有多个单相功率半导体模块和一个多相功率半导体模块,每个单相功率半导体模块具有至少框架状的第一壳体、两个第一DC电压端子件、第一AC电压端子件、第一辅助端子件和第一开关装置,多相功率半导体模块具有至少框架状的第二壳体、两个第二DC电压端子件、至少两个第二AC电压端子件、第二辅助端子件和第二开关装置,第一和第二DC电压端子件均在其长度的一个区段中并且在端子区段上形成堆叠并且相同地设计,所有功率半导体模块沿其相应的第一纵向侧的法向矢量方向布置成行,所有功率半导体模块的第一和第二DC电压端子件布置在相同的第一窄侧上。(The application proposes a power electronic assembly having a plurality of single-phase power semiconductor modules and one multiphase power semiconductor module, each single-phase power semiconductor module having at least a frame-like first housing, two first DC voltage terminal pieces, a first AC voltage terminal piece, a first auxiliary terminal piece and a first switching device, the multiphase power semiconductor module having at least a frame-like second housing, two second DC voltage terminal pieces, at least two second AC voltage terminal pieces, a second auxiliary terminal piece and a second switching device, the first and second DC voltage terminal pieces each forming a stack in one section of their length and on the terminal section and being identically designed, all power semiconductor modules being arranged in a row in the direction of the normal vector of their respective first longitudinal side, the first and second DC voltage terminal pieces of all power semiconductor modules being arranged on the same first narrow side.)

1. A power electronic component (1) having a plurality of single-phase power semiconductor modules (2) and a multiphase power semiconductor module (4),

characterized in that each single-phase power semiconductor module (2) has at least a frame-like first housing (20), two first DC voltage terminal pieces (30, 32), a first AC voltage terminal piece (34), a first auxiliary terminal piece (36) and a first switching device,

wherein the multiphase power semiconductor module (4) has at least a frame-shaped second housing (40), two second DC voltage terminal pieces (50, 52), at least two second AC voltage terminal pieces (54), a second auxiliary terminal piece (56) and a second switching device,

wherein the first DC voltage terminal piece (30, 32) and the second DC voltage terminal piece (50, 52) each form a stack in a section of their length and on the terminal section and are identically designed,

wherein all power semiconductor modules (2, 4) are arranged in a row in the direction of a normal vector (N1, N2) to their respective first longitudinal side (202, 402), and

wherein the first DC voltage terminal piece (30, 32) and the second DC voltage terminal piece (50, 52) of all power semiconductor modules are arranged on the same first narrow side (206, 406).

2. Power electronic assembly according to claim 1, characterized in that the first DC voltage terminal piece (30, 32) and the second DC voltage terminal piece (50, 52) are identically designed at least in the region of the terminal sections.

3. A power electronic assembly according to claim 1 or 2, characterized in that all DC voltage terminal members (30, 32, 50, 52) are connected with the common DC voltage supply member (70, 72) in the correct polarity.

4. Power electronic assembly according to claim 1 or 2, characterized in that the first AC voltage terminal piece (34) and the second AC voltage terminal piece (54) of all power semiconductor modules are arranged on the same second narrow side (208, 408).

5. Power electronic assembly according to claim 1 or 2, characterized in that the auxiliary terminal pieces (36, 56) of all power semiconductor modules (2, 4) are arranged along one or both longitudinal sides (202, 204, 402, 404) of the respective power semiconductor module (2, 4).

6. Power electronic assembly according to claim 1 or 2, characterized in that all power semiconductor modules (2, 4) have a centrally arranged mounting opening (210, 410).

7. Power electronic assembly according to claim 1 or 2, characterized in that all power semiconductor modules (2, 4) have a common drive means (6).

8. Power electronic assembly according to claim 7, characterized in that each of the power semiconductor modules (2, 4) is at least partially covered by a drive device (6).

9. A multiphase power semiconductor module (4) having at least a frame-shaped second housing (40), two second DC voltage terminal pieces (50, 52), at least two second AC voltage terminal pieces (54), a second auxiliary terminal piece (56), and a second switching device (502),

characterized in that the second DC voltage terminal pieces (50, 52) each form a stack in a section of their length and on a terminal section, the second DC voltage terminal pieces (50, 52) being arranged on the first narrow side (406), and the second AC voltage terminal pieces (54) being arranged on the second narrow side (408), which are adjacent to one another in the normal direction (N2).

10. Multiphase power semiconductor module according to claim 9, characterized in that the second auxiliary terminal piece (56) is arranged along a long side (402, 404).

11. Polyphase power semiconductor module according to one of claims 9 or 10, characterised in that the second AC voltage terminal piece (54) is designed as a metal foil or a metal plate.

12. Multiphase power semiconductor module according to claim 9 or 10, characterized in that the housing (40) has a plurality of contact areas (44) on its second narrow side (408) for each respective terminal area of the second AC voltage terminal piece (54).

13. Multiphase power semiconductor module according to claim 12, characterized in that the respective contact area (44) and the corresponding AC voltage terminal piece (54) each have a continuous opening (440, 540), wherein the openings are aligned with each other.

14. Multiphase power semiconductor module according to claim 13, characterized in that the openings (440, 540) are designed and provided to accommodate sections of a pressing piece which is designed to press the respective AC voltage terminal piece (54) on the corresponding contact area (44) and to press the housing section of the contact area against the cooling device.

15. The multiphase power semiconductor module according to claim 11, characterized in that said second AC voltage terminal member (54) has a thickness of 300 to 2000 μ ι η.

16. Multiphase power semiconductor module according to claim 15, characterized in that the second AC voltage terminal element (54) has a thickness of from 500 to 1500 μ ι η.

Technical Field

The invention relates to a power electronics module having a plurality of single-phase power semiconductor modules and a multiphase power semiconductor module, and to a multiphase power semiconductor module of this type. In particular, the assembly is provided in a partially or fully electrically driven vehicle for supplying two AC power consumers of different power. This is for example an all-wheel drive system with "strong" and "weak" electric motors or a drive system with an electric motor and another two-or multiphase AC power consumer (e.g. a rectifier).

Background

DE 102017115883 a1 discloses a submodule and an assembly having the submodule, wherein the submodule comprises a switching device having a substrate and electrically conductive tracks arranged thereon. The sub-module has first and second DC voltage conductive traces and first and second DC voltage terminal members electrically connected thereto and an AC voltage conductive trace and an AC voltage terminal member electrically connected thereto. The submodule also has a shaped insulating body which surrounds the switching device in a frame-like manner. The first DC voltage terminal part rests with a first contact section on the first contact of the shaped insulating body, and the AC voltage terminal part rests with a second contact section on the second contact of the shaped insulating body. To this end, the first clamping device is designed to extend in an electrically insulating manner through the first opening in the first contact body and to form an electrically conductive clamping connection between the first DC voltage terminal piece and the corresponding first DC voltage connection piece, and the second clamping device is designed to extend in an electrically insulating manner through the second opening in the second contact body and to form an electrically conductive clamping connection between the AC voltage terminal piece and the corresponding AC voltage connection piece.

Disclosure of Invention

Based on this prior art, it is an object of the present invention to provide a power electronic assembly having a plurality of single-phase power semiconductor modules and one multiphase power semiconductor module, and such a multiphase power semiconductor module, wherein the assembly is capable of a simple direct current supply for all power semiconductor modules and is prepared for supplying two AC consumers of different power.

According to the invention, this object is achieved by a power electronic assembly having a plurality of single-phase power semiconductor modules and one multiphase power semiconductor module, wherein each single-phase power semiconductor module has at least a frame-shaped first housing, two first DC voltage terminal pieces, a first AC voltage terminal piece, a first auxiliary terminal piece and a first switching device, wherein the multiphase power semiconductor module has at least a frame-shaped second housing, two second DC voltage terminal pieces, at least two second AC voltage terminal pieces, a second auxiliary terminal piece and a second switching device, wherein the first and second DC voltage terminal pieces are each stacked and identically designed in one section of their length and over the terminal sections, wherein all power semiconductor modules are arranged in a row in the direction of the normal vector of their respective first longitudinal side, and wherein the first and second DC voltage terminal pieces of all power semiconductor modules are arranged on the same first narrow side . Here, the first and second longitudinal sides of adjacent power semiconductor modules, which in each case face one another, can be in contact with one another or spaced apart from one another.

Preferably, a first AC power consuming member is connected to the first AC voltage terminal member and a second, lower power AC power consuming member is connected to the second AC voltage terminal member. In particular, it is advantageous here if the first and second AC voltage terminal pieces of all power semiconductor modules are arranged on the same second narrow side.

Preferably, the first and second DC voltage terminal pieces are identical at least in the region of the terminal sections. The DC voltage terminal pieces of the first and second power semiconductor modules are therefore designed identically. In particular, however, this embodiment does not exclude the advantage that all DC voltage terminal elements are connected to a common DC voltage supply element with the correct polarity, which means that, in addition to the first power semiconductor module, the second power semiconductor module can also be supplied with the same DC voltage source, and little additional structural effort is required.

It may also be advantageous for the auxiliary terminal elements of all power semiconductor modules to be arranged along one or both longitudinal sides of the respective power semiconductor module.

It may also be preferred that all power semiconductor modules have a centrally arranged mounting opening.

It is particularly advantageous if all power semiconductor modules have a common drive. Each power semiconductor module is at least partially covered by a drive. All power semiconductor modules are therefore connected to the drive by means of their auxiliary terminal elements.

The object is also achieved by a multiphase power semiconductor module having at least a frame-like second housing, two second DC voltage terminal pieces, at least two second AC voltage terminal pieces, a second auxiliary terminal piece and a second switching device, wherein the first and second DC voltage terminal pieces are each stacked in a section of their length and on the terminal sections, the second DC voltage terminal pieces being arranged on the first narrow side and the second AC voltage terminal pieces being arranged on the second narrow side, which are adjacent to one another in the normal direction.

It may also be advantageous for the second auxiliary terminal element to be arranged along a long side, or of course along both long sides.

It may be advantageous if the second AC voltage terminal part is designed as a metal film or metal plate having a thickness of preferably 300 μm to 2000 μm, particularly preferably from 500 μm to 1500 μm. It is also preferred that the first AC voltage terminal piece is also designed in the same way, similarly to the first and second DC voltage terminal pieces.

It is advantageous in principle if the housing has a plurality of contact regions on its second narrow side for each of the corresponding terminal regions of the second AC voltage terminal piece. It is also advantageous here if each contact region and the corresponding AC voltage terminal piece have a continuous opening, wherein these openings are aligned with one another. It is also advantageous here if the opening is designed and provided to accommodate a section of a pressure piece which is designed to press the respective AC voltage terminal piece against the corresponding contact region and to press a housing section of the contact region against the cooling device.

Features mentioned in the singular may also be present in the assembly according to the invention several times, unless per se or explicitly excluded, in particular a multiphase power semiconductor module.

It is to be understood that the various embodiments of the invention can be implemented individually or in any combination, so that improvements are achieved. In particular, the features mentioned above and below can be used not only in the combinations given, but also in other combinations or alone, without leaving the scope of the invention and independently of whether they are disclosed in an assembly or in a multiphase power semiconductor module.

Drawings

Further explanations, advantageous details and features of the invention will become clear on the basis of the following description of exemplary embodiments of the invention schematically illustrated in fig. 1 to 4 or on the basis of the individual components thereof.

Figure 1 shows a three-dimensional view of a multiphase power semiconductor module according to the invention,

figure 2 shows a detailed top view of an assembly according to the invention,

figure 3 shows an assembly according to the invention,

fig. 4 shows a three-dimensional view of a single-phase power semiconductor module according to the prior art.

Detailed Description

Fig. 1 shows a three-dimensional view of a multiphase power semiconductor module according to the invention. The multiphase power semiconductor module has a frame-like second housing 40, the second housing 40 having a housing shell 42. A second switching device is arranged in the interior of the multiphase power semiconductor module, which second switching device is of substantially conventional design. The second switching device is designed here merely as a three-phase bridge circuit by way of example and is provided to generate a three-phase AC output voltage from the DC input voltage.

For this purpose, the multiphase power semiconductor module has two second DC voltage terminal pieces 50, 52 on its first narrow side 406 (see also fig. 2). Each of which is designed as a flat metal body produced by a press bending technique. The two second DC voltage terminal pieces 50, 52 each form a stacked arrangement over the main section over which they extend, extending into the region of the terminal sections. In this case, as in the standard single-phase power semiconductor module according to fig. 4, the two contact surfaces projecting upward are offset with respect to one another. A very low inductance connection can thus be formed with the corresponding DC voltage supply (see fig. 3). In order to connect the second DC voltage terminal pieces 50, 52 with the correct polarity to the corresponding DC voltage supply piece, the DC voltage terminal pieces 50, 52 and the DC voltage supply piece and the housing each have a continuous opening, which are aligned with each other. These openings are designed and adapted to receive a section of an electrically insulated screw connection.

On a second narrow side 408 of the housing 40 opposite the first narrow side 406, a plurality of contact areas 44 are arranged adjacent to one another in the normal direction N2 (see also fig. 2). In this embodiment, a second AC voltage terminal piece 54 is arranged on each contact region 44. For a switching device with only two AC voltage terminal pieces 54, it is preferred that the intermediate support surface remains free.

The respective contact regions 44 of the housing 40 as well as the corresponding AC voltage terminal piece 54 and the second AC voltage supply piece 94 arranged there (see fig. 3) each have a continuous opening 440, 540, 940 (see fig. 3) aligned with one another. The opening is provided for this purpose and is suitable for receiving a section of the preferably electrically insulating screw connection.

The multiphase power semiconductor module 4 also has a plurality of second auxiliary terminal elements 56 which are arranged close to the edges of the two longitudinal sides 402, 404 and are designed here as press-pin terminal elements.

Analogously to the single-phase power semiconductor module according to fig. 4, the multiphase power semiconductor module 4 also has a centrally arranged mounting opening 410, which is designed and provided to fix the respective power semiconductor module in a heat-conducting manner in the cooling device.

Fig. 2 shows a top view of a detail of the assembly according to the invention, which is used in particular for determining geometrical parameters, while fig. 3 shows the assembly according to the invention with further components. Each of the power semiconductor modules 2, 4 has a substantially rectangular outline with a first narrow side and an opposite second narrow side 206, 208, 406, 408, a first long side 202, 402 comprising normal vectors N1, N2 and a second long side 204, 404 opposite the first long side. All power semiconductor modules 2, 4 have the same length 214, 414 and preferably also the same width 212, 412 as shown here.

The power electronic assembly 1 according to the invention shown in fig. 3 has three single-phase power semiconductor modules 2 arranged in a row and a multiphase power semiconductor module 4 continuing the row. Here, the normal vectors N1, N2 (see fig. 2) of all first longitudinal sides 202, 204 point in the same direction.

Each single-phase power semiconductor module 2 (see also fig. 4) has a frame-like first housing 20 comprising a casing 22, two first DC voltage terminal pieces 30, 32, a first AC voltage terminal piece 34, a first auxiliary terminal piece 36 and a first switching device.

The multiphase power semiconductor module 4 according to fig. 1 has a frame-like second housing 40 with a housing shell 42, two second DC voltage terminal pieces 50, 52, at least two second AC voltage terminal pieces 54, a second auxiliary terminal piece 56 and a second switching device 502.

It is important that the first and second DC voltage terminal pieces 30, 32, 50, 52 each form a stack in one section of their length and on the terminal sections and are designed in the same way, even identical, so that they can simply be connected to the same DC voltage supply piece 70, 72.

The first and second DC voltage terminal pieces 30, 32, 50, 52 of all power semiconductor modules 2, 4 are arranged on the same first narrow side 206, 406.

In addition, for the sake of clarity, the DC voltage supplies 70, 72 forming the stack are shown spaced apart from the power semiconductor modules 2, 4, where they form the DC voltage supply lines 7 of the not shown capacitive arrangement. The DC voltage supply elements 70, 72 are connected with the correct polarity to all DC voltage terminal elements 30, 32, 50, 52, i.e. to the DC voltage terminal elements of the single-phase power semiconductor module 2 and to the DC voltage terminal elements of the multiphase power semiconductor module 4. In particular, all the power semiconductor modules are designed identically at least in the terminal regions in order to be able to connect all the DC voltage terminal pieces 30, 32, 50, 52 in a simple manner.

Of course, in order to electrically insulate the elements of different polarity, the DC voltage terminal pieces 30, 32, 50, 52 and the DC voltage supply pieces 70, 72 have an intermediate insulating layer 38, 58, 78.

Furthermore, the respective housing 2, 4 and the DC voltage terminal pieces 30, 32, 50, 52 and in this case also the DC voltage supply piece 70, 72 have openings 200, 300, 700 which are designed and provided for receiving sections of pressure pieces which are designed to press the respective stack of DC voltage supply pieces 70, 72 against the stack of DC voltage terminal pieces 30, 32, 50, 52 and against corresponding contact regions of the housing 20, 40.

The single-phase power semiconductor modules 2 each have a first AC voltage terminal piece 34 which is provided and designed to be connected to a first AC voltage supply line having three AC voltage supply pieces 84. For the sake of clarity, these AC voltage supplies 84 are also shown spaced apart from the corresponding single-phase power semiconductor modules 2 and here form the terminals of the first three-phase electric motor.

The multiphase power semiconductor module 4 has three second AC voltage terminal pieces 54 which are provided and designed to be connected to a second AC supply line 9, which second AC supply line 9 has three AC voltage supply pieces 94. For the sake of clarity, these AC voltage supplies 94 are also shown spaced apart from the corresponding multiphase power semiconductor modules 4 and here form the terminals of the second three-phase electric motor. The terminals of the second three-phase electric motor have a lower power than the terminals of the first three-phase electric motor.

Furthermore, the respective housing 20, 40 and the AC voltage terminal pieces 34, 54 and here also the AC voltage supply pieces 84, 94 have openings 240, 340, 840, 940 which are designed and arranged to accommodate sections of pressure pieces which are designed to press the respective AC voltage supply piece 84, 94 against the respective AC voltage terminal piece 34, 54 and against the respective contact region 44 of the housing 20, 40.

All of the first and second AC voltage terminal pieces 34, 54 of all of the power semiconductor modules are arranged on the same second narrow side 206, 406 of the respective power semiconductor module 2, 4. The assembly according to the invention therefore has all DC voltage terminal pieces 30, 32, 50, 52 along the first narrow sides 206, 406 and all AC voltage terminal pieces 34, 54 on the second narrow sides 208, 408. This enables a very efficient and compact design and also a very low inductance on the DC voltage side.

Each power semiconductor module 2, 4 also has an auxiliary terminal piece 36, 56, which is arranged along one or both longitudinal sides 202, 204, 402, 404 of the respective power semiconductor module 2, 4, respectively. The auxiliary terminal pieces 36, 56 are used for electrically conductive connection to the common drive 6 of all power semiconductor modules 2, 4. This partially covers all power semiconductor modules 2, 4, respectively.

Fig. 4 shows a three-dimensional view of a single-phase power semiconductor module 2 according to the prior art. The single-phase power semiconductor module 2 has a frame-like second housing 20 having a housing 22. Inside the single-phase power semiconductor module 2, a first switching device is arranged, which is of substantially standard design. The first switching device is here designed, by way of example only, as a single-phase bridge circuit and is provided to generate a single-phase AC output voltage from the DC input voltage.

For this purpose, the single-phase power semiconductor module 2 has two first DC terminal pieces 30, 32 on its first narrow side 206. This is the same as the first DC terminal piece of the multiphase power semiconductor module according to fig. 1. A first AC terminal piece 34 is arranged on a second narrow side 208 of the housing 20 opposite the first narrow side 206.

Furthermore, the single-phase power semiconductor module 2 has a plurality of first auxiliary terminal pieces 36 which are arranged close to the edge of the first longitudinal side 204 and are designed here as press-pin terminal pieces.

Furthermore, similar to the multiphase power semiconductor module according to fig. 1, the single-phase power semiconductor module 2 has a centrally arranged mounting opening 210, which is designed and provided for fixing the respective power semiconductor module to the cooling device in a thermally conductive manner.