CN215934706U

CN215934706U - Frequency converter

Info

Publication number: CN215934706U
Application number: CN202122471434.8U
Authority: CN
Inventors: 汤惠崴; 王丰
Original assignee: Beijing Hekang Xinneng Frequency Conversion Technology Co ltd
Current assignee: Beijing Hekang Xinneng Frequency Conversion Technology Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-03-01
Anticipated expiration: 2031-10-14

Abstract

An embodiment of the present invention provides a frequency converter, including: a housing; the power unit is arranged in the shell and comprises a first power module and a second power module, and the first power module is detachably connected with the second power module; the radiator is arranged on the first power module. Compared with the prior art that the power unit is integrally installed on the frequency conversion cabinet, the problem of difficulty in installation caused by the fact that the power unit is too heavy can be effectively solved. Moreover, the problem that the frequency converter with the traditional structure mode is difficult to maintain after sale is solved.

Description

Frequency converter

Technical Field

The embodiment of the utility model relates to the technical field of frequency converter equipment, in particular to a frequency converter.

Background

At present, the power units of various high-power high-voltage frequency converters mostly adopt the design idea of low-current power units, power is increased by replacing larger power devices and more capacitors, and the same architecture scheme is adopted for stacking, so that the weight of the whole power unit is continuously increased along with the increase of the power.

When a high-voltage frequency converter in the related art is installed, a rectifier bridge module and an inverter module are installed on a radiator and then are reversely buckled on a power unit frame as an assembly, and are connected with a capacitance pool assembly through bolts to form a whole and then are installed in a frequency conversion cabinet. However, when the whole power unit is installed in the frequency conversion cabinet as a whole, installation is difficult due to overweight, and after-sale maintenance and the like are more difficult.

SUMMERY OF THE UTILITY MODEL

Embodiments of the present invention are directed to solving at least one of the technical problems occurring in the prior art.

To this end, a first aspect of an embodiment of the present invention provides a frequency converter.

In view of this, according to a first aspect of embodiments of the present invention, there is provided a frequency converter, including: a housing; the power unit is arranged in the shell and comprises a first power module and a second power module, and the first power module is detachably connected with the second power module; the radiator is arranged on the first power module.

The frequency converter provided by the embodiment of the utility model comprises a shell, a power unit and a radiator, wherein the power unit comprises a first power module and a second power module, and it can be understood that the first power module can comprise a rectifying module and an inverting module, the second power module comprises a capacitance pool module, and the first power module is electrically connected with the second power module, so that rectification, filtering and inversion are realized through the first power module and the second power module, and further, voltages or currents with different voltage grades and different frequencies are output.

By detachably connecting the first power module and the second power module, the mounting of the power unit can be facilitated. It can be understood that, the first power module and the second power module are detachably connected, when being installed, the first power module and the second power module can be respectively installed in the shell, and then the first power module and the second power module are connected, compared with the related art that the power unit is installed to the frequency conversion cabinet as a whole, the problem of difficulty in installation caused by the fact that the power unit is too heavy can be effectively solved.

In addition, by detachably connecting the first power module and the second power module, after-sales repair can also be facilitated. It can be understood that, when after-sale maintenance is carried out, the first power module and the second power module are detachably connected, so that the first power module or the second power module can be taken out respectively for modification and maintenance, and then the first power module or the second power module is installed in the shell respectively, and the problem that the frequency converter with the traditional structure mode is difficult to maintain after sale is solved.

The radiator is arranged on the first power module, it can be understood that the first power module comprises a rectifying module and an inverting module, and it can be understood that the main source of heat generation of the frequency converter is the inverting module. Through setting up the radiator at first power module, that is to say, compare the radiator and be close to the contravariant module setting in second power module to can improve the radiating effect to the converter. Further, the heat sink is provided to the first power module, that is, the heat sink and the first power module are integrated into one part, and the second power module is provided as one part, that is, the power unit is divided into two parts, which are heavy, and detachably connected, thereby facilitating the installation of the power unit while solving the problem of difficulty in after-sales repair due to the excessive weight of the power unit.

In a specific application, the frequency converter further comprises a connecting piece, and the connecting piece is respectively connected with the first power module and the second power module, that is, the first power module and the second power module are detachably and electrically connected through the connecting piece. When after-sale maintenance is carried out, only the connecting piece needs to be detached, and the first power module and the second power module are taken out of the shell respectively for maintenance, so that the problem of difficulty in after-sale maintenance caused by overweight power units is effectively solved.

In addition, the frequency converter provided by the technical scheme of the utility model also has the following additional technical characteristics:

in one possible design, the frequency converter further includes a connecting member, a first end of the connecting member is connected to the first power module, and a second end of the connecting member is connected to the second power module.

In this design, it is defined that the frequency converter further comprises a connecting member, specifically, one end of the connecting member is connected with the first power module, and the other end of the connecting member is connected with the second power module, that is, the first power module and the second power module are detachably and electrically connected through the connecting member. When after-sale maintenance is carried out, only the connecting piece needs to be detached, and the first power module and the second power module are taken out of the shell respectively for maintenance, so that the problem of difficulty in after-sale maintenance caused by overweight power units is effectively solved.

The first power module and the second power module are detachably connected through the connecting piece, so that the power unit can be conveniently mounted. It can be understood that, the first power module and the second power module are detachably connected, when being installed, the first power module and the second power module can be respectively installed in the shell, and then the first power module and the second power module are connected, compared with the related art that the power unit is installed to the frequency conversion cabinet as a whole, the problem of difficulty in installation caused by the fact that the power unit is too heavy can be effectively solved.

In addition, the first power module and the second power module are detachably connected through the connecting piece, and after-sale maintenance can be facilitated. It can be understood that, when after-sale maintenance is carried out, the first power module and the second power module are detachably connected, so that the first power module or the second power module can be taken out respectively for modification and maintenance, and then the first power module or the second power module is installed in the shell respectively, and the problem that the frequency converter with the traditional structure mode is difficult to maintain after sale is solved.

In specific application, the connecting piece is a connecting bus bar, namely the first power module and the second power module are detachably and electrically connected through the connecting bus bar.

In one possible design, the first power module is provided with a first mounting location, the second power module is provided with a second mounting location, the first end of the connecting piece is detachably connected with the first mounting location, and the second end of the connecting piece is detachably connected with the second mounting location.

In the design, it is limited that the first power module is provided with a first mounting position, the second power module is provided with a second mounting position, and one end of the connecting piece is detachably connected with the first power module through the first mounting position. The other end of the connecting piece is detachably connected with the second power module through the second mounting position. When after-sale maintenance is carried out, only the connecting piece needs to be detached, and the first power module and the second power module are taken out of the shell respectively for maintenance, so that the problem of difficulty in after-sale maintenance caused by overweight power units is effectively solved.

In one possible design, the first power module includes an inverter module, the inverter module is connected to an output terminal of the second power module, and the heat sink is disposed adjacent to the inverter module.

In this design, it is limited that the first power module includes the contravariant module, specifically speaking, the contravariant module is connected with the output of second power module, and it can be understood that, the second power module is the capacitance pool module, and after filtering through the capacitance pool module, the second power module enters the contravariant module to contravariant, and then outputs the voltage or the current of different voltage levels, different frequencies.

In addition, the radiator is arranged on the first power module, namely, the radiator is arranged close to the inverter module compared with the second power module, so that the heat dissipation effect on the frequency converter can be improved. Further, the heat sink is provided to the first power module, that is, the heat sink and the first power module are integrated into one part, and the second power module is provided as one part, that is, the power unit is divided into two parts, which are heavy, and detachably connected, thereby facilitating the installation of the power unit while solving the problem of difficulty in after-sales repair due to the excessive weight of the power unit.

Further, the radiator is arranged close to the inverter module, and it can be understood that the main source of heat generation of the frequency converter is the inverter module. Through being close to the contravariant module setting with the radiator, can further improve the radiating effect to the converter.

In one possible design, the first power module further includes a first mounting member, the first mounting member is provided with a first mounting cavity, the inverter module is located in the first mounting cavity, and at least a portion of the heat sink is located in the first mounting cavity.

In this design, it has been limited that the first power module still includes first installed part, and specifically speaking, first installed part is provided with first installation cavity, and the contravariant module is located first installation cavity, and at least a part of radiator is located first installation cavity, that is to say, sets up the radiator near the contravariant module, and it can be understood that the main source of generating heat of converter is the contravariant module. Through being close to the contravariant module setting with the radiator, can further improve the radiating effect to the converter.

In a possible design, the heat sink includes a heat dissipation pipeline, at least a portion of the heat dissipation pipeline is located in the first mounting cavity, the first mounting cavity extends out of two ends of the heat dissipation pipeline, and the heat dissipation pipeline is used for introducing a heat dissipation medium.

In this design, it includes the heat dissipation pipeline to have injectd the radiator, particularly, at least some of heat dissipation pipeline is located first installation cavity, and the both ends on heat dissipation pipeline extend first installation cavity, and the heat dissipation medium lets in to the heat dissipation pipeline through the one end on heat dissipation pipeline to flow through the other end on heat dissipation pipeline, thereby take away the heat in the first installation cavity, realize the heat dissipation of first power module and converter.

In a specific application, the heat dissipation medium may be water, that is, the heat in the first installation cavity is taken away by the flow of the water, so as to realize heat dissipation. And the water is cheap and convenient to recycle. In addition, compared with the related art in which air cooling is adopted to realize the heat dissipation of the power unit, the power unit has higher power density and better heat dissipation performance.

Of course, the heat dissipation medium may also be other media with a heat dissipation function, and may be specifically set according to actual needs.

In a possible design, the radiator comprises a radiating plate, a radiating cavity is arranged in the radiating plate, the radiating cavity is used for introducing a radiating medium, and the inverter module is installed on the radiating plate.

In this design, another way of dissipating heat is defined. Specifically, the radiator includes the heating panel, is provided with the heat dissipation chamber in the heating panel, and the contravariant module is installed on the heating panel. And a heat dissipation medium is introduced into the heat dissipation cavity, so that heat dissipation of the inverter module and the frequency converter is realized. In addition, the distance between the inverter module and the heat dissipation plate can be further reduced by installing the inverter module on the heat dissipation plate, and the heat dissipation effect of the inverter module is improved.

In one possible design, the heat sink further includes an input end and an output end, and the input end and the output end are respectively connected with the heat dissipation plate and are respectively communicated with the heat dissipation cavity.

In this design, it is defined that the heat sink further comprises an input end and an output end, in particular, the input end communicates with the heat dissipation chamber and the output end communicates with the heat dissipation chamber. Specifically, the heat dissipation medium enters the heat dissipation cavity from the input end and flows out from the output end, and in the flowing process, heat in the first installation cavity is taken away, so that heat dissipation of the first power module is achieved.

In one possible design, the heat-dissipating medium is water.

In this design, the heat dissipation medium is defined as water, that is, the heat in the first installation cavity is taken away by the flow of the water, so that the heat dissipation is realized. Specifically, water is introduced into the heat dissipation pipeline through one end of the heat dissipation pipeline and flows out through the other end of the heat dissipation pipeline, so that heat in the first installation cavity is taken away, and heat dissipation of the first power module and the frequency converter is achieved. And the water is cheap and convenient to recycle. In addition, compared with the related art in which air cooling is adopted to realize the heat dissipation of the power unit, the power unit has higher power density and better heat dissipation performance.

In a possible design, the first power module further includes a rectifier module, an output end of the rectifier module is connected to an input end of the second power module, and the rectifier module is disposed on the heat dissipation plate.

In the design, the first power module is limited to further comprise a rectifying module, specifically, an output end of the rectifying module is connected with an input end of the second power module, so that rectification, filtering and inversion are realized through the first power module and the second power module, and voltages or currents with different voltage levels and different frequencies are output.

Further, the rectifier module is arranged on the heat dissipation plate, so that the heat dissipation effect of the first power module, namely the frequency converter, can be further improved.

Also, by detachably connecting the first power module and the second power module, it is possible to facilitate the installation of the power unit. It can be understood that, the first power module and the second power module are detachably connected, when being installed, the first power module and the second power module can be respectively installed in the shell, and then the first power module and the second power module are connected, compared with the related art that the power unit is installed to the frequency conversion cabinet as a whole, the problem of difficulty in installation caused by the fact that the power unit is too heavy can be effectively solved.

In addition, the radiator is arranged on the first power module, it can be understood that the first power module comprises a rectifying module and an inverting module, and it can be understood that the main source of heat generation of the frequency converter is the inverting module. Through setting up the radiator at first power module, that is to say, compare the radiator and be close to the contravariant module setting in second power module to can improve the radiating effect to the converter. Further, the heat sink is provided to the first power module, that is, the heat sink and the first power module are integrated into one part, and the second power module is provided as one part, that is, the power unit is divided into two parts, which are heavy, and detachably connected, thereby facilitating the installation of the power unit while solving the problem of difficulty in after-sales repair due to the excessive weight of the power unit.

In one possible design, the housing is provided with a mounting opening; the first installation part comprises a panel, the panel is arranged towards the installation opening, and at least one part of the first installation position is exposed out of the panel.

In this design, it includes the panel to have injectd first installed part, specifically speaking, the panel sets up towards the installing port of casing, that is to say, the panel is the front panel, and also the panel sets up towards the user, and at least a part of first installation position exposes in the panel to be convenient for the connecting piece through first installation position realization with the dismantlement installation of first power module, improve the convenience of user after-sale maintenance, and then promote the user and experience the use of converter.

In one possible design, the first mounting member further comprises a cover plate connected to the panel; wherein, the apron is the insulation board.

In this design, it still includes the apron to have injectd first installed part, specifically speaking, and the apron is connected with the panel, and wherein, the apron is the insulation board to ensure first power module top position and outside insulating effect, and then improve the stability and the reliability of converter operation.

In one possible design, the second power module is a capacitive battery module; the capacitance pool module comprises a plurality of capacitors, and the plurality of capacitors are mutually connected in parallel.

In this design, the second power module is defined as a capacitive battery module, i.e. filtering is achieved by the second power module. Specifically, the capacitor pool module includes a plurality of capacitors, and the plurality of capacitors are arranged in parallel with each other, so that a filtering function is realized by the second power module. The capacitor pool module is matched with the high-power first power module by comprising a plurality of capacitors, so that the power of the frequency converter is improved.

In specific application, each capacitor is also connected with a resistor in parallel, namely, the resistors and the capacitors correspond to each other one by one, so that the filtering effect of the capacitor cell module is improved.

In one possible design, the capacitor cell module further comprises a second mounting part provided with a second mounting cavity, the plurality of capacitors being located in the second mounting cavity.

In this design, it still includes the second installed part to have injectd the capacitance pond module, specifically speaking, the second installed part is provided with the second installation cavity, and a plurality of electric capacity are located the second installation cavity to realize the installation of a plurality of electric capacity, and then realize filtering function through the second power module.

In one possible design, the second mounting member includes a plurality of side plates and a capacitor pressing plate, wherein the plurality of side plates are connected, the capacitor pressing plate is connected with the plurality of side plates, and at least a portion of the second mounting portion is exposed to the capacitor pressing plate.

In this design, it includes a plurality of curb plates and electric capacity clamp plate to have injectd the second installed part, and particularly, a plurality of curb plates end to end in proper order, and electric capacity clamp plate links to each other with a plurality of curb plates to enclose and close and form the installation of second installation cavity, realization a plurality of electric capacities. At least one part of the second installation position is exposed out of the capacitor pressing plate, so that the connecting piece can be conveniently detached and installed with the second power module through the second installation position, convenience in after-sale maintenance of a user is improved, and use experience of the user on the frequency converter is further improved.

Additional aspects and advantages in accordance with the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 shows one of the schematic structural diagrams of a power cell according to one embodiment of the utility model;

FIG. 2 illustrates a second schematic diagram of a power cell according to an embodiment of the utility model;

FIG. 3 illustrates one of the partial structural schematics of a power cell according to one embodiment of the utility model;

fig. 4 shows a second partial structural schematic of a power cell according to an embodiment of the utility model;

FIG. 5 illustrates a schematic diagram of a second power module according to an embodiment of the utility model;

fig. 6 shows a partial structural schematic diagram of a second power module according to an embodiment of the utility model.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 6 is:

100 power units, 110 first power modules, 111 first installation positions, 112 inverter modules, 113 rectifier modules, 114 first installation parts, 1141 panels, 1142 cover plates, 120 second power modules, 121 second installation positions, 122 capacitors, 123 second installation parts, 1231 side plates, 1232 capacitor pressing plates, 131 heat dissipation plates, 132 input ends, 133 output ends and 140 connecting pieces.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

Frequency converters provided according to some embodiments of the present invention are described below with reference to fig. 1 to 6.

The first embodiment is as follows:

as shown in fig. 1 and 2, an embodiment of the first aspect of the present invention provides a frequency converter, including: a housing; the power unit 100 is arranged in the shell, the power unit 100 comprises a first power module 110 and a second power module 120, and the first power module 110 is detachably connected with the second power module 120; and a heat sink provided to the first power module 110.

The frequency converter provided by the embodiment of the utility model comprises a shell, a power unit 100 and a heat sink, specifically, the power unit 100 comprises a first power module 110 and a second power module 120, it can be understood that the first power module 110 may comprise a rectifying module 113 and an inverting module 112, the second power module 120 comprises a capacitance pool module, and the first power module 110 is electrically connected with the second power module 120, so that rectification, filtering and inversion are realized through the first power module 110 and the second power module 120, and further, voltages or currents with different voltage levels and different frequencies are output.

By detachably connecting the first power module 110 and the second power module 120, it is possible to facilitate the installation of the power unit 100. It can be understood that, the first power module 110 and the second power module 120 are detachably connected, when being installed, the first power module 110 and the second power module 120 can be respectively installed in the housing, and then the first power module 110 and the second power module 120 are connected, compared with the related art in which the power unit 100 is installed as a whole to the inverter cabinet, the problem of difficulty in installation due to the overweight of the power unit 100 can be effectively solved.

In addition, by detachably connecting the first power module 110 and the second power module 120, after-sales repair can be facilitated. It can be understood that, during after-sale maintenance, since the first power module 110 and the second power module 120 are detachably connected, the first power module 110 or the second power module 120 can be taken out respectively for modification and maintenance, and then are installed in the housing respectively, so that the problem of difficulty in after-sale maintenance of the frequency converter in the conventional structural mode is solved.

The heat sink is disposed on the first power module 110, it is understood that the first power module 110 includes a rectifying module 113 and an inverting module 112, and it is understood that a main source of heat generation of the inverter is the inverting module 112. By disposing the heat sink on the first power module 110, that is, disposing the heat sink closer to the inverter module 112 than the second power module 120, the heat dissipation effect of the inverter can be improved. Also, the heat sink is provided to the first power module 110, that is, the heat sink and the first power module 110 are integrated into one part, and the second power module 120 is provided as one part, that is, the power unit 100 is divided into two parts, which are heavy, and detachably connected, thereby solving the problem of difficulty in after-market repair due to the overweight of the power unit 100 while facilitating the installation of the power unit 100.

In a specific application, the frequency converter further includes a connector 140, and the connector 140 is connected to the first power module 110 and the second power module 120 respectively, that is, the first power module 110 and the second power module 120 are electrically connected detachably through the connector 140. During after-sale maintenance, the connector 140 is only required to be removed, and the first power module 110 and the second power module 120 are respectively taken out from the housing for maintenance, so that the problem of difficulty in after-sale maintenance caused by the overweight of the power unit 100 is effectively solved.

As shown in fig. 1, based on the above embodiment, further, the frequency converter further includes a connecting member 140, a first end of the connecting member 140 is connected to the first power module 110, and a second end of the connecting member 140 is connected to the second power module 120.

In this embodiment, the frequency converter is further defined to include a connector 140, specifically, one end of the connector 140 is connected to the first power module 110, and the other end of the connector 140 is connected to the second power module 120, that is, the first power module 110 and the second power module 120 are electrically connected in a detachable manner through the connector 140. During after-sale maintenance, the connector 140 is only required to be removed, and the first power module 110 and the second power module 120 are respectively taken out from the housing for maintenance, so that the problem of difficulty in after-sale maintenance caused by the overweight of the power unit 100 is effectively solved.

The first power module 110 and the second power module 120 are detachably connected by the connection member 140, so that the installation of the power unit 100 can be facilitated. It can be understood that, the first power module 110 and the second power module 120 are detachably connected, when being installed, the first power module 110 and the second power module 120 can be respectively installed in the housing, and then the first power module 110 and the second power module 120 are connected, compared with the related art in which the power unit 100 is installed as a whole to the inverter cabinet, the problem of difficulty in installation due to the overweight of the power unit 100 can be effectively solved.

In addition, the first power module 110 and the second power module 120 are detachably connected by the connection member 140, and after-sales repair can be facilitated. It can be understood that, during after-sale maintenance, since the first power module 110 and the second power module 120 are detachably connected, the first power module 110 or the second power module 120 can be taken out respectively for modification and maintenance, and then are installed in the housing respectively, so that the problem of difficulty in after-sale maintenance of the frequency converter in the conventional structural mode is solved.

In a specific application, the connecting member 140 is a connecting busbar, that is, the first power module 110 and the second power module 120 are detachably and electrically connected through the connecting busbar.

As shown in fig. 3, 4, 5 and 6, on the basis of the above embodiment, further, the first power module 110 is provided with a first mounting location 111, the second power module 120 is provided with a second mounting location 121, a first end of the connecting member 140 is detachably connected to the first mounting location 111, and a second end of the connecting member 140 is detachably connected to the second mounting location 121.

In this embodiment, it is defined that the first power module 110 is provided with the first mounting location 111, the second power module 120 is provided with the second mounting location 121, and one end of the connecting member 140 is detachably connected to the first power module 110 through the first mounting location 111. The other end of the connecting member 140 is detachably connected to the second power module 120 through the second mounting location 121. During after-sale maintenance, the connector 140 is only required to be removed, and the first power module 110 and the second power module 120 are respectively taken out from the housing for maintenance, so that the problem of difficulty in after-sale maintenance caused by the overweight of the power unit 100 is effectively solved.

Example two:

as shown in fig. 4, based on any of the above embodiments, further, the first power module 110 includes an inverter module 112, the inverter module 112 is connected to the output end of the second power module 120, and the heat sink is disposed near the inverter module 112.

In this embodiment, the first power module 110 is defined to include an inverter module 112, and specifically, the inverter module 112 is connected to an output end of the second power module 120, and it is understood that the second power module 120 is a capacitive battery module, that is, after filtering is performed by the capacitive battery module, the filtered.

In addition, the heat sink is disposed on the first power module 110, that is, the heat sink is disposed closer to the inverter module 112 than the second power module 120, so that the heat dissipation effect of the inverter can be improved. Also, the heat sink is provided to the first power module 110, that is, the heat sink and the first power module 110 are integrated into one part, and the second power module 120 is provided as one part, that is, the power unit 100 is divided into two parts, which are heavy, and detachably connected, thereby solving the problem of difficulty in after-market repair due to the overweight of the power unit 100 while facilitating the installation of the power unit 100.

Further, the heat sink is disposed near the inverter module 112, and it can be understood that the main source of heat generation of the frequency converter is the inverter module 112. By disposing the heat sink close to the inverter module 112, the heat dissipation effect of the frequency converter can be further improved.

As shown in fig. 3 and 4, on the basis of the above embodiment, further, the first power module 110 further includes a first mounting part 114, the first mounting part 114 is provided with a first mounting cavity, the inverter module 112 is located in the first mounting cavity, and at least a portion of the heat sink is located in the first mounting cavity.

In this embodiment, the first power module 110 is further defined to include a first mounting member 114, specifically, the first mounting member 114 is provided with a first mounting cavity, the inverter module 112 is located in the first mounting cavity, and at least a portion of the heat sink is located in the first mounting cavity, that is, the heat sink is disposed close to the inverter module 112, it is understood that the main source of heat generation of the frequency converter is the inverter module 112. By disposing the heat sink close to the inverter module 112, the heat dissipation effect of the frequency converter can be further improved.

In a specific embodiment, further, the heat sink includes a heat dissipation pipeline, at least a portion of the heat dissipation pipeline is located in the first installation cavity, two ends of the heat dissipation pipeline extend out of the first installation cavity, and the heat dissipation pipeline is used for introducing a heat dissipation medium.

In this embodiment, it includes the heat dissipation pipeline to have limited the radiator, specifically speaking, at least a part of heat dissipation pipeline is located first installation cavity, and the both ends of heat dissipation pipeline extend first installation cavity, and the heat dissipation medium lets in to the heat dissipation pipeline through the one end of heat dissipation pipeline to flow out through the other end of heat dissipation pipeline, thereby take away the heat in first installation cavity, realize the heat dissipation of first power module 110 and converter.

In a specific application, the heat dissipation medium may be water, that is, the heat in the first installation cavity is taken away by the flow of the water, so as to realize heat dissipation. And the water is cheap and convenient to recycle. In addition, compared with the related art in which air cooling is used to dissipate heat from the power unit 100, the power density is higher and the heat dissipation performance is better.

In another specific embodiment, as shown in fig. 4, further, the heat sink includes a heat dissipation plate 131, a heat dissipation cavity is disposed in the heat dissipation plate 131, the heat dissipation cavity is used for introducing a heat dissipation medium, and the inverter module 112 is mounted on the heat dissipation plate 131.

In this embodiment, another way of dissipating heat is defined. Specifically, the heat sink includes a heat dissipation plate 131, a heat dissipation chamber is provided in the heat dissipation plate 131, and the inverter module 112 is mounted on the heat dissipation plate 131. And a heat dissipation medium is introduced into the heat dissipation cavity, so that the inversion module 112 and the frequency converter are cooled. In addition, by mounting the inverter module 112 on the heat dissipation plate 131, the distance between the inverter module 112 and the heat dissipation plate 131 can be further reduced, and the heat dissipation effect of the inverter module 112 can be improved.

As shown in fig. 4, on the basis of the above embodiment, the heat sink further includes an input end 132 and an output end 133, and the input end 132 and the output end 133 are respectively connected to the heat dissipation plate 131 and respectively communicated with the heat dissipation chamber.

In this embodiment, the heat sink is further defined to include an input end 132 and an output end 133, specifically, the input end 132 is in communication with the heat dissipation chamber and the output end 133 is in communication with the heat dissipation chamber. Specifically, the heat dissipation medium enters the heat dissipation cavity from the input end 132 and flows out through the output end 133, and during the flowing process, the heat in the first installation cavity is taken away, so that the heat dissipation of the first power module 110 is realized.

In a specific embodiment, further, the heat dissipation medium is water.

In this embodiment, the heat dissipation medium is defined as water, that is, the heat in the first installation cavity is taken away by the flow of the water, so that the heat dissipation is realized. Specifically, water is introduced into the heat dissipation pipeline through one end of the heat dissipation pipeline and flows out through the other end of the heat dissipation pipeline, so that heat in the first installation cavity is taken away, and heat dissipation of the first power module 110 and the frequency converter is achieved. And the water is cheap and convenient to recycle. In addition, compared with the related art in which air cooling is used to dissipate heat from the power unit 100, the power density is higher and the heat dissipation performance is better.

As shown in fig. 4, based on the above embodiment, further, the first power module 110 further includes a rectifying module 113, an output end of the rectifying module 113 is connected to an input end of the second power module 120, and the rectifying module 113 is disposed on the heat dissipation plate 131.

In this embodiment, it is defined that the first power module 110 further includes a rectifying module 113, and specifically, an output terminal of the rectifying module 113 is connected to an input terminal of the second power module 120, so that rectification, filtering and inversion are realized by the first power module 110 and the second power module 120, and voltages or currents with different voltage levels and different frequencies are output.

Further, the rectifier module 113 is provided on the heat dissipation plate 131, and the heat dissipation effect to the first power module 110, that is, the inverter can be further improved.

Also, by detachably connecting the first power module 110 and the second power module 120, it is possible to facilitate the installation of the power unit 100. It can be understood that, the first power module 110 and the second power module 120 are detachably connected, when being installed, the first power module 110 and the second power module 120 can be respectively installed in the housing, and then the first power module 110 and the second power module 120 are connected, compared with the related art in which the power unit 100 is installed as a whole to the inverter cabinet, the problem of difficulty in installation due to the overweight of the power unit 100 can be effectively solved.

In addition, the heat sink is disposed on the first power module 110, it is understood that the first power module 110 includes a rectification module 113 and an inversion module 112, and it is understood that a main source of heat generation of the inverter is the inversion module 112. By disposing the heat sink on the first power module 110, that is, disposing the heat sink closer to the inverter module 112 than the second power module 120, the heat dissipation effect of the inverter can be improved. Also, the heat sink is provided to the first power module 110, that is, the heat sink and the first power module 110 are integrated into one part, and the second power module 120 is provided as one part, that is, the power unit 100 is divided into two parts, which are heavy, and detachably connected, thereby solving the problem of difficulty in after-market repair due to the overweight of the power unit 100 while facilitating the installation of the power unit 100.

Example three:

as shown in fig. 3, on the basis of any of the above embodiments, further, the housing is provided with a mounting opening; the first mounting member 114 includes a panel 1141, the panel 1141 is disposed toward the mounting opening, and at least a portion of the first mounting location 111 is exposed out of the panel 1141.

In this embodiment, it is defined that the first mounting part 114 includes a panel 1141, and specifically, the panel 1141 is disposed toward the mounting opening of the housing, that is, the panel 1141 is a front panel 1141, that is, the panel 1141 is disposed facing a user, and at least a portion of the first mounting position 111 is exposed out of the panel 1141, so that the connection member 140 is conveniently detached from and mounted on the first power module 110 through the first mounting position 111, convenience of after-sale maintenance of the user is improved, and further, the use experience of the user on the frequency converter is improved.

As shown in fig. 3, in addition to the above embodiment, the first mounting member 114 further includes a cover plate 1142, and the cover plate 1142 is connected to the panel 1141; the cover plate 1142 is an insulating plate.

In this embodiment, the first mounting member 114 further includes a cover plate 1142, and particularly, the cover plate 1142 is connected to the panel 1141, wherein the cover plate 1142 is an insulating plate, so as to ensure an insulating effect between the top position of the first power module 110 and the outside, thereby improving the stability and reliability of the operation of the frequency converter.

Example four:

as shown in fig. 6, on the basis of any of the above embodiments, further, the second power module 120 is a capacitor pool module; the capacitor cell module comprises a plurality of capacitors 122, the plurality of capacitors 122 being arranged in parallel with each other.

In this embodiment, the second power module 120 is defined as a capacitive pool module, i.e. filtering is achieved by the second power module 120. Specifically, the capacitor pool module includes a plurality of capacitors 122, and the plurality of capacitors 122 are disposed in parallel with each other, so that the filtering function is implemented by the second power module 120. The capacitor pool module, by including a plurality of capacitors 122, in cooperation with the high power first power module 110, increases the power of the frequency converter.

In a specific application, each capacitor 122 is further connected in parallel with a resistor, that is, the resistors and the capacitors 122 correspond to each other one by one, so that the filtering effect of the capacitor cell module is improved.

As shown in fig. 5, on the basis of the above embodiment, further, the capacitor cell module further includes a second mounting member 123, the second mounting member 123 is provided with a second mounting cavity, and the plurality of capacitors 122 are located in the second mounting cavity.

In this embodiment, it is defined that the capacitor cell module further includes a second mounting member 123, specifically, the second mounting member 123 is provided with a second mounting cavity, and the plurality of capacitors 122 are located in the second mounting cavity, so as to implement the mounting of the plurality of capacitors 122, and further implement the filtering function through the second power module 120.

As shown in fig. 5, based on the above embodiment, further, the second mounting part 123 includes a plurality of side plates 1231 and a capacitive pressure plate 1232, wherein the plurality of side plates 1231 are connected, the capacitive pressure plate 1232 is connected to the plurality of side plates 1231, and at least a portion of the second mounting location 121 is exposed to the capacitive pressure plate 1232.

In this embodiment, it is defined that the second mounting part 123 includes a plurality of side plates 1231 and a capacitor pressing plate 1232, specifically, the plurality of side plates 1231 are sequentially connected end to end, and the capacitor pressing plate 1232 is connected to the plurality of side plates 1231, so as to form a second mounting cavity by enclosure, and thus, the mounting of the plurality of capacitors 122 is realized. At least a part of the second installation position 121 is exposed on the capacitor pressing plate 1232, so that the connecting member 140 can be conveniently detached from and installed on the second power module 120 through the second installation position 121, convenience in after-sale maintenance of a user is improved, and use experience of the user on the frequency converter is further improved.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A frequency converter, comprising:

a housing;

the power unit is arranged in the shell and comprises a first power module and a second power module, and the first power module is detachably connected with the second power module;

the radiator is arranged on the first power module.

2. The frequency converter of claim 1, further comprising:

and the first end of the connecting piece is connected with the first power module, and the second end of the connecting piece is connected with the second power module.

3. Frequency converter according to claim 2,

the first power module is provided with a first installation position, the second power module is provided with a second installation position, the first end of the connecting piece is detachably connected with the first installation position, and the second end of the connecting piece is detachably connected with the second installation position.

4. The frequency converter of claim 3, wherein the first power module comprises:

and the inversion module is connected with the output end of the second power module, and the radiator is arranged close to the inversion module.

5. The frequency converter of claim 4, wherein the first power module further comprises:

the first installation part is provided with a first installation cavity, the inverter module is located in the first installation cavity, and at least one part of the radiator is located in the first installation cavity.

6. The frequency converter of claim 5, wherein the heat sink comprises:

the heat dissipation device comprises a heat dissipation pipeline, wherein at least one part of the heat dissipation pipeline is located in the first installation cavity, the two ends of the heat dissipation pipeline extend out of the first installation cavity, and the heat dissipation pipeline is used for introducing a heat dissipation medium.

7. The frequency converter of claim 5, wherein the heat sink comprises:

the heat dissipation plate is internally provided with a heat dissipation cavity, the heat dissipation cavity is used for introducing a heat dissipation medium, and the inverter module is installed on the heat dissipation plate.

8. The frequency converter of claim 7, wherein the heat sink further comprises:

and the input end and the output end are respectively connected with the heat dissipation plate and are respectively communicated with the heat dissipation cavity.

9. The frequency converter according to claim 7,

the heat dissipation medium is water.

10. The frequency converter of claim 7, wherein the first power module further comprises:

and the output end of the rectifying module is connected with the input end of the second power module, and the rectifying module is arranged on the heat dissipation plate.

11. Frequency converter according to claim 5,

the shell is provided with a mounting opening;

the first mount includes:

the panel is arranged towards the mounting opening, and at least one part of the first mounting position is exposed out of the panel.

12. The frequency converter of claim 11, wherein the first mount further comprises:

the cover plate is connected with the panel;

wherein, the cover plate is an insulating plate.

13. Frequency converter according to any one of claims 3 to 12,

the second power module is a capacitance pool module;

the capacitive cell module comprises:

and the capacitors are mutually connected in parallel.

14. The frequency converter of claim 13, wherein the capacitive pool module further comprises:

the second installed part is provided with a second installation cavity, and the capacitors are located in the second installation cavity.

15. The frequency converter of claim 14, wherein the second mount comprises:

a plurality of side plates connected to each other;

and the capacitor pressing plate is connected with the side plates, and at least one part of the second mounting position is exposed out of the capacitor pressing plate.