CN220439608U - Power module and electronic equipment - Google Patents

Abstract

The utility model relates to the technical field of driving, in particular to a power module and electronic equipment, wherein the power module comprises: a housing; the power connectors comprise at least one first power connector comprising a connecting part and at least two connecting pins, wherein the first ends of the connecting pins in the first power connector are connected to the connecting part, the connecting pins extend outwards from the first side face, the interval between the connecting pins is a first interval (D), and the interval between the power connectors is a second interval (A); a plurality of signal connector sets, each signal connector set comprising at least two signal connectors; k transistors. According to the power module, the plurality of connecting pins of the first power connector in the power connector are arranged in parallel, so that leakage inductance of the power module can be reduced, thermal stress generated in use can be obviously reduced, and performance and reliability of the power module are improved.

Description

Power module and electronic equipment

Technical Field

The present utility model relates to the field of driving technologies, and in particular, to a power module and an electronic device.

Background

Along with miniaturization of electronic products, power modules are widely applied, for example, in the field of electrical engineering, as a part of a driving controller of a motor, however, a connector of a current power module is provided with defects, so that leakage inductance of the power module is high, and larger thermal stress can be generated in working to affect performance of the power module.

Disclosure of Invention

According to an aspect of the present utility model, there is provided a power module including:

the shell is provided with a first side surface and a second side surface which are oppositely arranged, and a top surface and a bottom surface which are oppositely arranged, wherein the areas of the top surface and the bottom surface are larger than those of the first side surface and the second side surface;

a plurality of power connectors are arranged on the first side face, the plurality of power connectors comprise at least one first power connector comprising a connecting part and at least two connecting pins, the first ends of the connecting pins in the first power connectors are connected to the connecting part, the connecting pins extend outwards from the first side face, the space between the connecting pins is a first space (D), the space between the power connectors is a second space (A), and the second space (A) is larger than the first space (D);

the second side face is provided with a plurality of signal connector groups, each signal connector group comprises at least two signal connectors, the space between the signal connectors in the signal connector groups is a third space (B), the space between the signal connectors in the signal connector groups is a fourth space (C), and the second space (A) and the third space (B) are smaller than the fourth space (C);

and K transistors are arranged in the shell, and each terminal of each transistor is connected with the corresponding power connector and the signal connector, wherein K is a positive integer.

In one possible embodiment, a plurality of power connectors are arranged side by side on the first side and individual signal connectors of a plurality of signal connector sets are arranged side by side on the second side.

In one possible embodiment, the power connector and the signal connector are both surface mounted devices SMDs.

In one possible embodiment, the power connector and the signal connector each have a first connecting portion, a second connecting portion, and a third connecting portion, which are sequentially connected, led out from the housing, the first connecting portion extending outward from the housing, the second connecting portion extending outward from the first connecting portion at a predetermined angle, and the third connecting portion extending outward from the second connecting portion.

In one possible embodiment, the power module further comprises a heat sink disposed on a top surface of the housing.

In one possible embodiment, the heat sink comprises heat dissipating metal sheets.

In one possible embodiment, the number of the power connectors is 3, wherein the number of connection pins in at least one power connector is 2-5, the number of signal connector groups is 2, and the number of signal connectors in each signal connector group is 2 or 3.

In one possible embodiment, the transistor includes at least one of a diode, a triode, a MOSFET transistor, a thyristor, and an IGBT transistor.

According to an aspect of the present utility model, there is provided an electronic device including the power module.

In the power module of the embodiment of the utility model, the plurality of power connectors are arranged on the first side surface of the shell, the plurality of power connectors comprise at least one first power connector comprising a connecting part and at least two connecting pins, the first ends of the connecting pins in the first power connector are connected to the connecting part, the connecting pins extend outwards from the first side surface, the distance between the connecting pins is a first distance (D), the distance between the power connectors is a second distance (A), the second distance (A) is larger than the first distance (D), the plurality of signal connector groups are arranged on the second side surface, each signal connector group comprises at least two signal connectors, the distance between the signal connectors in the signal connector group is a third distance (B), the distance between the signal connector groups is a fourth distance (C), and the second distance (A) and the third distance (B) are smaller than the fourth distance (C), so that the power module can be reduced in parallel connection by arranging the plurality of the power connectors in the power connector, the heat leakage performance can be remarkably reduced, and the power module can be improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed. Other features and aspects of the present utility model will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1a shows a schematic plan view of a power module according to an embodiment of the present utility model, and fig. 1b shows a schematic perspective view of a power module according to an embodiment of the present utility model.

Fig. 2a shows a schematic plan view of a power module according to an embodiment of the present utility model, and fig. 2b shows a schematic perspective view of a power module according to an embodiment of the present utility model.

Fig. 3a shows a schematic plan view of a power module according to an embodiment of the present utility model, and fig. 3b shows a schematic perspective view of a power module according to an embodiment of the present utility model.

Fig. 4a shows a schematic plan view of a power module according to an embodiment of the present utility model, and fig. 4b shows a schematic perspective view of a power module according to an embodiment of the present utility model.

Detailed Description

Various exemplary embodiments, features and aspects of the utility model will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better illustration of the utility model. It will be understood by those skilled in the art that the present utility model may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present utility model.

Referring to fig. 1a and 1b, fig. 1a shows a schematic plan view of a power module according to an embodiment of the utility model, and fig. 1b shows a schematic perspective view of the power module according to an embodiment of the utility model.

As shown in fig. 1a and 1b, the power module may include:

the device comprises a shell 10, wherein the shell 10 is provided with a first side surface and a second side surface which are oppositely arranged, and a top surface and a bottom surface which are oppositely arranged, and the areas of the top surface and the bottom surface are larger than those of the first side surface and the second side surface;

a plurality of power connectors 20 are disposed on the first side, wherein the plurality of power connectors 20 include at least one first power connector including a connection portion 220 and at least two connection pins 210, first ends of the connection pins 210 in the first power connector are connected to the connection portion 220 (i.e., the connection pins 210 are connected in parallel), the connection pins 210 extend outward from the first side, and a pitch between the connection pins 210 is a first pitch (D), a pitch between the power connectors 20 is a second pitch (a), and the second pitch (a) is greater than the first pitch (D);

a plurality of signal connector groups 30 are arranged on the second side, each signal connector group 30 comprises at least two signal connectors 310, the space between the signal connectors 310 in the signal connector groups 30 is a third space (B), the space between the signal connector groups 30 is a fourth space (C), and the second space (a) and the third space (B) are smaller than the fourth space (C);

k transistors are provided in the housing 10 (not shown), each terminal of the transistors being connected to a corresponding power connector 20 and signal connector 310, where K is a positive integer.

In the power module according to the embodiment of the present utility model, the plurality of power connectors 20 are disposed on the first side of the housing 10, at least one first power connector including the connection portion 220 and at least two connection pins 210 is included in the plurality of power connectors 20, the first ends of the connection pins 210 in the first power connector are connected to the connection portion 220, the connection pins 210 extend from the first side to the outside, and the space between the connection pins 210 is a first space (D), the space between the power connectors 20 is a second space (a), the second space (a) is greater than the first space (D), the plurality of signal connector groups 30 are disposed on the second side, each signal connector group 30 includes at least two signal connectors 310, the space between the signal connectors 310 in the signal connector group 30 is a third space (B), the space between the signal connector groups 30 is a fourth space (C), and the second space (a) and the third space (B) are smaller than the fourth space (C), so that the power module according to the present utility model can reduce thermal leakage stress by implementing the power module and the power module according to the present utility model, which can reduce thermal leakage stress by disposing the power connectors in parallel.

The specific shape of the housing 10 is not limited in the embodiment of the present utility model, and the housing 10 may be a hexahedral structure, for example, similar to a cube, and the size of the housing 10 is not limited in the embodiment of the present utility model, and the size of each surface of the housing 10 is not limited, so that those skilled in the art may set the present utility model according to actual situations and needs.

The specific forms of the power connector 20 and the signal connector 310 are not limited, and the power connector 20 (including the connection pins 210) and the signal connector 310 may be implemented as surface mount devices (SMD, surface Mounted Devices, surface mount devices) by way of example, so that the circuit density can be effectively improved, the cost can be reduced, and the large-scale and automatic production of the power module is facilitated.

As shown in fig. 1b, the power connector 20 and the signal connector 310 have a first connection portion 2110, a second connection portion 2120, and a third connection portion 2130 sequentially connected to each other, wherein the first connection portion 2110 extends from the housing 10 to the outside, the second connection portion 2120 extends from the first connection portion 2110 to the outside at a predetermined angle, and the third connection portion 2130 extends from the second connection portion 2120 to the outside, and the first connection portion 2110 may be perpendicular to the first side (or parallel to the top surface and the bottom surface), the predetermined angle may be 90 ° -that is, perpendicular to the first connection portion 2110 (of course, the predetermined angle may be adaptively set as required), and the third connection portion 2130 extends to the outside in the same direction as the first connection portion 2110, which is to be understood that the power connector 20 (including the connection pin 210) and the signal connector 310 may be the same in the embodiment of the present utility model, and the signal connector may not be actually limited in this embodiment.

As shown in fig. 1b, in the embodiment of the present utility model, a plurality of connection pins 210 are connected in parallel to form one power connector 20, so that the cross-sectional area of the power connector 20 can be reduced, and when the power module works, even if thermal expansion occurs, excessive thermal stress is not generated, and the service performance of the power module can be improved.

The number of signal connector sets 30 is not limited, and the number of signal connectors 310 in each signal connector set 30 is not limited, and a person skilled in the art may set according to actual situations and needs, and an exemplary power module may include 2 signal connector sets 30, and the number of signal connectors 310 in each signal connector set 30 may be 2 or 3.

The specific sizes of the first pitch (D), the second pitch (a), the third pitch (B), and the fourth pitch (C) are not limited in this embodiment, and may be set by those skilled in the art according to actual situations and needs, and in a possible implementation manner, the first pitch (D) may be smaller than or equal to the third pitch (B), and the size of the connection pin 210 may be equal to or smaller than the size of the signal connector 310. As an example, taking two adjacent power connectors 20 as an example, the second pitch (a) may be a distance between a center line of one of the power connectors 20 to a center line of a connection pin on an edge side (a side close to the one of the power connectors 20) of the other power connector 20, the first pitch (D) may be a distance between center lines of two adjacent connection pins, the third pitch (B) may be a distance between center lines of two adjacent signal connectors, and the fourth pitch (C) may be a distance between center lines of signal connectors on a relatively close edge side of the two signal connector groups.

In one possible implementation, as shown in fig. 1a and fig. 1b, the plurality of power connectors 20 are disposed side by side on the first side, and the respective signal connectors 310 of the plurality of signal connector groups 30 are disposed side by side on the second side, which, of course, is not limited by the specific arrangement of the power connectors 20 and the signal connectors 310, and those skilled in the art may adapt the arrangement according to the packaging requirements.

Illustratively, in embodiments of the present utility model, the remaining power connectors 20 may be an integral surface mount device (also referred to as a patch connector) in addition to the plurality of first power connectors (formed by the plurality of connection pins 210 in parallel).

Various possible implementations of the power module are described below by way of example.

Referring to fig. 2a and 2b, fig. 2a is a schematic plan view of a power module according to an embodiment of the utility model, and fig. 2b is a schematic perspective view of the power module according to an embodiment of the utility model.

In one example, as shown in fig. 2a and 2b, the power module of the embodiment of the present utility model may include 3 power connectors 20 on the first side and 2 signal connector groups 30 on the second side, where the 3 power connectors 20 may include a first power connector, each signal connector group 30 may include 3 independent signal connectors 310, the first power connector includes 2 connection pins 210 connected in parallel, and the other 2 power connectors 20 are an integral patch connector (which may be regarded as a connection pin 210 with a larger width), and the integral width of the first power connector (the length between two outer edges of the two connection pins 210) may be greater than or equal to the width of the other 2 power connectors 20, and the effective width of the first power connector (the sum of the widths of the two connection pins 210 itself) may be obviously smaller than the width of the other 2 power connectors 20.

Referring to fig. 3a and 3b, fig. 3a is a schematic plan view of a power module according to an embodiment of the utility model, and fig. 3b is a schematic perspective view of the power module according to an embodiment of the utility model.

In one example, as shown in fig. 3a and 3b, the power module of the embodiment of the present utility model may set 3 power connectors 20 on the first side and set 2 signal connector groups 30 on the second side, where one of the 3 power connectors 20 may include a first power connector, one of the 2 signal connector groups 30 may include 3 independent signal connectors 310, the other signal connector group 30 may include 2 independent signal connectors 310, the first power connector may include 2 parallel connection pins 210, the other 2 power connectors 20 are integral patch connectors, and an exemplary integral width (a length between two outer edges of the two connection pins 210) of the first power connector may be greater than or equal to a width of the other 2 power connectors 20, and an effective width (a sum of widths of the two connection pins 210) of the first power connector may be obviously smaller than a width of the other 2 power connectors 20.

Referring to fig. 4a and 4b, fig. 4a is a schematic plan view of a power module according to an embodiment of the utility model, and fig. 4b is a schematic perspective view of the power module according to an embodiment of the utility model.

In one example, as shown in fig. 4a and fig. 4b, the power module of the embodiment of the present utility model may be provided with 3 power connectors 20 on the first side and 2 signal connector groups 30 on the second side, where each signal connector group 30 may include 3 independent signal connectors 310,3, and 2 first power connectors may be included in the power connectors 20, where one first power connector may include 2 connection pins 210 connected in parallel, and another first power connector may include 3 connection pins 210 connected in parallel, and the other 1 power connector 20 is a monolithic patch connector, and an exemplary overall width of the 2 first power connectors (a length between two outer edges of the connection pins 210) may be the same as a width of the power connector 20 of the monolithic patch connector, and an effective width of the 2 first power connectors (a sum of widths of the respective connection pins 210) is obviously smaller than a width of the power connector 20.

Of course, the above description is exemplary and should not be construed as limiting the embodiments of the present utility model, and in other embodiments, the number of the power connectors 20 and the signal connectors 310 of the power module may be other, and the number of the first power connectors and the number of the connection pins in the first power connectors may be set as required.

The embodiment of the present utility model does not limit the type of the transistor, and in a possible implementation manner, the transistor may include at least one of a diode, a triode, a MOSFET transistor, a thyristor (may also be referred to as a silicon controlled rectifier SCR), an IGBT transistor, and the like, and of course, the transistor may be another semiconductor device with two ends and three ends provided with more terminals. As an example, in the power module, two field effect transistors may be included to form a half-bridge circuit, or two IGBT transistors may be included to form a half-bridge circuit, where power terminals of the respective transistors may be connected to the power connector 20 of the power module, and signal terminals of the respective transistors may be connected to the signal connector 310 of the power module.

In one possible embodiment, the power module may further include a heat sink (not shown) disposed on the top surface of the housing 10, and the heat sink may include a heat dissipating metal sheet, for example. When the power module works, the radiator can be synchronously started to reduce the temperature of the power module and improve the service performance of the power module. The embodiment of the utility model does not limit the specific implementation manner of the radiator, and a person skilled in the art can adopt a proper heat dissipation scheme to form the radiator according to actual situations and needs. Illustratively, the radiator may also be an air-cooled radiator, a liquid-cooled radiator, or the like.

The power module may include a single semiconductor chip or a plurality of semiconductor chips, which is not limited to the embodiments of the present utility model.

According to an aspect of the present utility model, there is provided an electronic device including the power module.

The electronic device may be a power device or other types of devices, which is not limited in this embodiment of the present utility model.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (9)

1. A power module, the power module comprising:

the shell is provided with a first side surface and a second side surface which are oppositely arranged, and a top surface and a bottom surface which are oppositely arranged, wherein the areas of the top surface and the bottom surface are larger than those of the first side surface and the second side surface;

a plurality of power connectors are arranged on the first side face, the plurality of power connectors comprise at least one first power connector comprising a connecting part and at least two connecting pins, the first ends of the connecting pins in the first power connectors are connected to the connecting part, the connecting pins extend outwards from the first side face, the space between the connecting pins is a first space (D), the space between the power connectors is a second space (A), and the second space (A) is larger than the first space (D);

the second side face is provided with a plurality of signal connector groups, each signal connector group comprises at least two signal connectors, the space between the signal connectors in the signal connector groups is a third space (B), the space between the signal connectors in the signal connector groups is a fourth space (C), and the second space (A) and the third space (B) are smaller than the fourth space (C);

and K transistors are arranged in the shell, and each terminal of each transistor is connected with the corresponding power connector and the signal connector, wherein K is a positive integer.

2. The power module of claim 1 wherein a plurality of power connectors are disposed side-by-side on the first side and a plurality of signal connector sets of individual signal connectors are disposed side-by-side on the second side.

3. The power module of claim 1, wherein the power connector and the signal connector are both surface mount devices, SMDs.

4. The power module of claim 1, wherein the power connector and the signal connector each have a first connection portion, a second connection portion, and a third connection portion that are sequentially connected and lead from the housing, the first connection portion extending outward from the housing, the second connection portion extending outward from the first connection portion at a predetermined angle, and the third connection portion extending outward from the second connection portion.

5. The power module of claim 1 further comprising a heat sink disposed on a top surface of the housing.

6. The power module of claim 5, wherein the heat sink comprises a heat sink metal sheet.

7. The power module of any one of claims 1-6, wherein the number of power connectors is 3, wherein the number of connection pins in at least one power connector is 2-5, the number of signal connector sets is 2, and the number of signal connectors in each signal connector set is 2 or 3.

8. The power module of any of claims 1-6, wherein the transistor comprises at least one of a diode, a triode, a MOSFET transistor, a thyristor, an IGBT transistor.

9. An electronic device, characterized in that it comprises a power module according to any of claims 1-8.