CN221467552U - Integrated power module and power converter - Google Patents

Abstract

The utility model discloses an integrated power module and a power converter. The integrated power module comprises a power component module, wherein the power component module comprises a plurality of power devices, and adjacent power devices are electrically connected; the capacitor pool module comprises a plurality of capacitor cores which are connected in parallel, and the capacitor pool module is electrically connected with the power piece module; the driving piece and the capacitor pool module are arranged on two opposite sides of the power piece module, and the driving piece is connected with each power device; the radiator, the power piece module and the capacitor pool module are arranged on the radiator. The integrated power module integrates the modularized power piece module and the capacitor pool module, improves the integration level of the integrated power module, reduces the volume and the weight, is convenient for installation and subsequent maintenance, shortens the circuit commutation length, and realizes low stray inductance connection; meanwhile, the power part module and the capacitor pool module share one radiator, so that the layout is more compact, the heat dissipation design is facilitated, and the material cost is saved.

Description

Integrated power module and power converter

Technical Field

The present disclosure relates to power modules, and particularly to an integrated power module and a power converter.

Background

The power conversion unit of the high-power electronic conversion product is usually designed into a modularized assembly, which is called a power module for short; the power module generally comprises IGBT power devices, copper bars, a radiator and the like, wherein some power modules comprise a capacitor pool, and other power modules do not comprise a capacitor pool.

In the prior art, the power module provided with the external capacitor pool is smaller in volume, but the current path between the power device and the capacitor pool is prolonged, and an electrical connection point between the power module and the capacitor pool is increased, so that stray inductance can be increased, and voltage stress exceeds standard; because the quantity of the capacitors in the capacitor pool is more, each capacitor is independently provided with an aluminum shell, so that the power module is large in volume and is not beneficial to installation and subsequent maintenance.

Therefore, how to reduce the volume and weight of the power module while realizing low stray inductance connection is a technical problem that needs to be solved by those skilled in the art.

Disclosure of utility model

Accordingly, the present utility model is directed to an integrated power module for reducing the volume and weight of the power module while achieving low stray inductance connection.

In order to achieve the above object, the present utility model provides the following technical solutions:

An integrated power module, comprising:

the power component module comprises a plurality of power devices, and adjacent power devices are electrically connected;

The capacitor pool module comprises a plurality of parallel capacitor cores, and the capacitor pool module is electrically connected with the power piece module;

The driving piece and the capacitor pool module are arranged on two opposite sides of the power piece module, and the driving piece is connected with each power device;

and the power piece module and the capacitor pool module are both arranged on the radiator.

Optionally, in the integrated power module, a plurality of the power devices are arranged in a row along a preset direction.

Optionally, in the integrated power module, adjacent power devices are connected through a first electrical connector, a second electrical connector for electrical input or output is further arranged on the power device module, and the capacitor pool module is connected with the power device module through a third electrical connector;

The second electrical connector and the third electrical connector are located on the same side of the power element module, and the second electrical connector and the third electrical connector are arranged at intervals.

Optionally, in the integrated power module, the first electrical connector, the second electrical connector and the third electrical connector are combined into a single electrical connection structure;

Or the first electric connector, the second electric connector and the third electric connector adopt split structures.

Optionally, in the integrated power module, the first electrical connector, the second electrical connector and the third electrical connector are laminated bus bars, copper bars or cables.

Optionally, in the integrated power module, the heat sink includes an air-cooled heat sink or a liquid-cooled heat sink.

Optionally, in the integrated power module, the radiator is a liquid-cooled radiator, and at least two surfaces of the liquid-cooled radiator are provided with the power element module and the capacitor pool module.

Optionally, in the integrated power module, the capacitor pool module further includes a housing, and an installation space is provided in the housing;

The capacitor cores are encapsulated in the installation space, and the capacitor cores are led out of the wiring terminals in parallel through the busbar.

A power converter includes an integrated power module as described above.

When the integrated power module provided by the utility model is used, a plurality of power devices are arranged in a concentrated way, so that adjacent power devices are electrically connected to form a modularized power device module; the capacitor cell module has the advantages of low inductance, large capacitance and small volume compared with the existing structure in which each capacitor is provided with an aluminum shell, and the volume and the weight are reduced; the driving piece and the capacitor pool module are arranged on two opposite sides of the power module, and the driving piece is electrically connected with each power device so as to realize driving control of the power devices.

Therefore, on one hand, the integrated power module provided by the utility model integrates a plurality of power devices together to realize the modularization of the power devices, a plurality of capacitor cores are connected in parallel to form a capacitor pool module with low inductance, large capacitance and small volume and weight, on the other hand, the modularized power device module and the capacitor pool module are integrated, the integration level of the integrated power module is improved, the integrated power module has smaller volume and weight, and the installation and subsequent maintenance are convenient, and meanwhile, as the driving piece and the capacitor pool module are arranged on two opposite sides of the power device module, that is, the power device module is arranged adjacent to the capacitor pool module and the driving piece, the circuit commutation length is shortened, the stray inductance is reduced, the low stray inductance connection is realized, the stress exceeding risk of the device is reduced, and the volume and the weight of the power module are reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an integrated power module according to an embodiment of the present utility model;

Fig. 2 is a schematic structural diagram of a capacitor pool module with a busbar removed according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a capacitor pool module without a busbar hidden in the embodiment of the present utility model.

The power module comprises a power component module, a capacitance pool module, a capacitance core body, a housing, a bus bar, a driving component, a first electric connector, a second electric connector, a third electric connector and a heat radiator, wherein the power component module comprises a power component 100, a capacitance pool module 200, a capacitance core body, a housing 202, a bus bar 203, the driving component 300, the first electric connector comprises a first electric connector 400, the second electric connector comprises a second electric connector 500, the third electric connector comprises a third electric connector and a heat radiator 700.

Detailed Description

Accordingly, the core of the present utility model is to provide an integrated power module for reducing the volume and weight of the power module while achieving low stray inductance connection.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, an embodiment of the present utility model discloses an integrated power module, which includes a power module 100, a capacitor cell module 200, and a driving member 300.

The power component module 100 comprises a plurality of power devices, and adjacent power devices are electrically connected; the capacitor cell module 200 comprises a plurality of capacitor cores 201 connected in parallel, and the capacitor cell module 200 is electrically connected with the power piece module 100; the driving member 300 and the capacitor cell module 200 are disposed at opposite sides of the power member module 100, and the driving member 300 is connected to each power device.

When the integrated power module provided by the utility model is used, a plurality of power devices are arranged in a concentrated way, so that adjacent power devices are electrically connected to form a modularized power device module 100; the plurality of capacitor cores 201 are connected in parallel, compared with the existing structure form that each capacitor is provided with an aluminum shell, the volume and the weight are reduced, and the capacitor pool module 200 has the advantages of low inductance, large capacitance and small volume; the driving member 300 and the capacitor cell module 200 are disposed at opposite sides of the power module, and the driving member 300 is electrically connected to each power device to realize driving control of the power device.

Therefore, the integrated power module provided by the utility model integrates a plurality of power devices to realize the modularization of the power devices, connects a plurality of capacitor cores 201 in parallel to form a capacitor pool module 200 with low inductance, large capacitance and small volume and weight, and integrates the modularized power device module 100 and the capacitor pool module 200 to improve the integration level of the integrated power module, so that the integrated power module has smaller volume and weight, and is convenient for installation and subsequent maintenance, meanwhile, as the driving piece 300 and the capacitor pool module 200 are arranged on the opposite sides of the power piece module 100, that is, the power piece module 100 is adjacent to the capacitor pool module 200 and the driving piece 300, the circuit commutation length is shortened, the stray inductance is reduced, the low stray inductance connection is realized, the overstrain risk of the stress of the device is reduced, and the volume and the weight of the power module are reduced.

It should be noted that, the arrangement modes of the plurality of power devices may be rectangular arrays or linear arrangements, and all the arrangement modes capable of meeting the use requirements are within the protection scope of the present utility model; optionally, in an embodiment of the present utility model, a plurality of power devices are arranged in a row along a preset direction, so that the capacitor pool module 200 and the driving member 300 are arranged on two sides of the power device module 100 in a row array, so that the circuit commutation length is shortened, the stray inductance is reduced, and the low stray inductance connection is realized.

As shown in fig. 1, adjacent power devices are connected through a first electrical connector 400, a second electrical connector 500 for electrical input or output is further provided on the power device module 100, and the capacitor cell module 200 is connected with the power device module 100 through a third electrical connector 600; the second electrical connector 500 and the third electrical connector 600 are located on the same side of the power module 100, and the second electrical connector 500 and the third electrical connector 600 are disposed at intervals, so that the first electrical connector 400, the second electrical connector 500 and the third electrical connector 600 are separated in a space direction, and are electrically separated from each other, thereby preventing electromagnetic interference from affecting the control stability of the system.

It should be understood that the first electrical connector 400, the second electrical connector 500 and the third electrical connector 600 may be combined into a single electrical connection structure, or the first electrical connector 400, the second electrical connector 500 and the third electrical connector 600 may be in a split structure, so long as the arrangement manner can meet the use requirement is within the scope of the present utility model; the first electrical connector 400, the second electrical connector 500, and the third electrical connector 600 may be configured as conductive members such as laminated bus bars, copper bars, or cables, and all configurations capable of meeting the use requirements are within the scope of the present utility model; optionally, the first electrical connector 400, the second electrical connector 500, and the third electrical connector 600 provided in the embodiment of the present utility model all use bus bars.

In addition, the power element module 100 and the capacitor cell module 200 may be mounted on the power converter by using a housing or a mounting plate, or may be directly mounted on the heat sink 700 of the power converter, so long as the mounting manner can meet the use requirement, which falls within the scope of the present utility model; optionally, the power element module 100 and the capacitor cell module 200 provided in the embodiment of the utility model are directly arranged on the radiator 700, so that the radiator 700 directly radiates heat to the power element module 100 and the capacitor cell module 200, and meanwhile, the power element module 100 and the capacitor cell module 200 share one radiator 700, so that the layout of the integrated power module is more compact, the radiating design is convenient, and the material cost is saved.

It should be noted that, the radiator 700 may be an air-cooled radiator or a liquid-cooled radiator, and any type of radiator capable of meeting the usage requirement falls within the scope of the present utility model; optionally, the heat sink 700 provided in the embodiment of the present utility model is a liquid-cooled heat sink.

Further, the heat sink 700 is a liquid-cooled heat sink, and the power element module 100 and the capacitor cell module 200 are disposed on at least two surfaces of the liquid-cooled heat sink, so as to improve the power density and reduce the material cost.

As shown in fig. 2 and 3, the capacitor cell module 200 provided by the present utility model further includes a housing 202, and an installation space is provided in the housing 202; wherein, a plurality of electric capacity core 201 embeds in installation space, and a plurality of electric capacity core 201 draws forth binding post through female row 203 in parallel, with a plurality of electric capacity core 201 embeds simultaneously in casing 202, compared with the current outside at every electric capacity core 201 sets up the aluminum hull, the mode of embedment alone with every electric capacity again has not only reduced the aluminum hull of every electric capacity core 201, and a plurality of electric capacity core 201 embeds simultaneously in casing 202, make more compacter between a plurality of electric capacity core 201, reduce the embedment volume of pouring sealant, make the weight and the volume of this electric capacity pond module 200 further reduce, form a low inductance, big capacitance value and small electric capacity pond module 200.

In addition, the utility model also discloses a power converter which comprises the integrated power module, so that all the technical effects of the integrated power module are achieved, and the description is omitted herein.

The terms first and second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to the listed steps or elements but may include steps or elements not expressly listed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. An integrated power module, comprising:

the power component module comprises a plurality of power devices, and adjacent power devices are electrically connected;

The capacitor pool module comprises a plurality of parallel capacitor cores, and the capacitor pool module is electrically connected with the power piece module;

The driving piece and the capacitor pool module are arranged on two opposite sides of the power piece module, and the driving piece is connected with each power device;

and the power piece module and the capacitor pool module are both arranged on the radiator.

2. The integrated power module of claim 1, wherein a plurality of the power devices are arranged in a row along a predetermined direction.

3. The integrated power module according to claim 1, wherein adjacent power devices are connected through a first electrical connector, a second electrical connector for electrical input or output is further arranged on the power device module, and the capacitor cell module is connected with the power device module through a third electrical connector;

The second electrical connector and the third electrical connector are located on the same side of the power element module, and the second electrical connector and the third electrical connector are arranged at intervals.

4. The integrated power module of claim 3 wherein the first electrical connector, the second electrical connector, and the third electrical connector are combined into a unitary electrical connection structure;

Or the first electric connector, the second electric connector and the third electric connector adopt split structures.

5. The integrated power module of claim 3 wherein the first, second and third electrical connectors are laminated bus bars, copper bars or cables.

6. The integrated power module of claim 1, wherein the heat sink comprises an air-cooled heat sink or a liquid-cooled heat sink.

7. The integrated power module of claim 1, wherein the heat sink is a liquid-cooled heat sink, at least two surfaces of the liquid-cooled heat sink being provided with the power element module and the capacitive pool module.

8. The integrated power module of claim 1, wherein the capacitive cell module further comprises a housing, the housing having an installation space therein;

The capacitor cores are encapsulated in the installation space, and the capacitor cores are led out of the wiring terminals in parallel through the busbar.

9. A power converter comprising an integrated power module as claimed in any one of claims 1 to 8.