CN219018685U

CN219018685U - Single-phase rectifying component

Info

Publication number: CN219018685U
Application number: CN202223193074.0U
Authority: CN
Inventors: 李江庚; 刘伟; 李志宏
Original assignee: WUHAN RECTIFIER INSTITUTE
Current assignee: WUHAN RECTIFIER INSTITUTE
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-12
Anticipated expiration: 2032-11-30

Abstract

The utility model provides a single-phase rectifying assembly, which comprises rectifying modules and connecting pieces, wherein at least two rectifying modules are arranged and are connected through the connecting pieces; the rectifying module comprises bridge arm groups, a radiator and an insulating plate, wherein at least two bridge arm groups are arranged on the radiator, and the two bridge arm groups are electrically connected in parallel; the heat radiators are arranged on the insulating plates, and the number of the heat radiators corresponds to the number of the bridge arm groups; the end of the connecting piece is connected with the insulating plates of the two rectifying modules. The rectifier module is divided into a plurality of bridge arm groups, and each bridge arm group is correspondingly provided with a radiator and fixedly connected, so that the connection of the two is convenient, and the radiating efficiency can be improved; secondly, the radiator is arranged on the insulating plate and is provided with a connecting piece for connecting the insulating plates in the rectifying modules, so that a plurality of rectifying modules can be connected in series, and the convenience of assembly grouping is effectively improved; the unidirectional rectifying component has good heat dissipation efficiency and is very in line with the rectification work of high frequency and high voltage.

Description

Single-phase rectifying component

Technical Field

The utility model relates to the technical field of electric elements, in particular to a single-phase rectifying component.

Background

Along with the development of electric power facilities and the improvement of the application demands of industrial production on the electric power facilities, the circuit voltage aimed by the rectifier is higher and higher, and in order to meet the heat dissipation demands of the rectifier, a heat dissipation component is required to be arranged in the rectifier, and the heat dissipation is performed on the rectification circuit component in time, so that the normal operation of the rectifier is ensured.

The utility model patent with the prior authority bulletin number of CN213185904U discloses an air-cooled high-power rectifier power module, which comprises: an insulating base plate for supporting; an air outlet baffle; fixing the reinforced side plates; the core power component comprises a thyristor power device, a fixed accessory, a long radiator, a short radiator and the like, wherein the long radiator and the short radiator are used for radiating heat; a discharge insulating plate for fixing the output copper bar; an upper top plate with the function of a closed air duct is formed; a fan cover for fixing the fan; a centrifugal fan for supplying air; fast melting; a main wire busbar positive electrode row and a main wire busbar negative electrode row which play a role in electric conduction.

According to the technical scheme, the heat dissipation device is used for dissipating heat of the rectifier through 1 long radiator and 2 short radiators, and meanwhile long bolts sequentially penetrate through T-shaped pressed steel, the long radiator, the short radiator and flat pressed steel and are fastened by corresponding nuts; the connecting mode has the problem of complex structure, is inconvenient for assembling all parts, and is not beneficial to group connection of all modules of the rectifier; meanwhile, most of current rectifiers are low-voltage rectification, and aiming at the rectification requirement of high frequency and high voltage, the existing structure is difficult to meet, and particularly the problem of heat dissipation is solved; and as the frequency is higher, the requirements for the structure of the rectifying component are also higher.

Disclosure of Invention

In view of this, the present utility model provides a single-phase rectifying assembly with simple structure, convenient connection of parts and easy grouping of modules.

The technical scheme of the utility model is realized as follows: the utility model provides a single-phase rectifying assembly, which comprises rectifying modules and connecting pieces, wherein at least two rectifying modules are arranged and are connected through the connecting pieces;

the rectifying module comprises a bridge arm group, a radiator and an insulating plate, wherein,

the heat radiator comprises at least two bridge arm groups, wherein the two bridge arm groups are electrically connected in parallel;

the heat radiators are arranged on the insulating plates, and the number of the heat radiators corresponds to the number of the bridge arm groups;

the connecting piece is connected with the insulating plates of the two rectifying modules.

On the basis of the technical scheme, preferably, the bridge arm group comprises two rectifying units, the two rectifying units are electrically connected in parallel, each rectifying unit comprises six diodes, the six diodes are electrically connected in series, and each two diodes form a rectifying module.

On the basis of the technical scheme, the resistor is preferably further arranged, the number of the resistors corresponds to the number of the diodes, the resistors are arranged on the insulating plate, and the resistors and the diodes are electrically connected in parallel.

Based on the technical scheme, the diode is preferably a 300A/1200V fast recovery rectifier diode.

On the basis of the technical scheme, the single-phase rectifying component is preferably used for rectifying an AC5000V alternating current circuit.

On the basis of the above technical solution, preferably, six rectifying modules in the two rectifying units are arranged in a row.

On the basis of the technical proposal, the radiator is preferably an air-cooled radiator, which comprises a body, radiating fins and a mounting groove, wherein,

the body is provided with a plurality of radiating fins which are arranged in parallel;

the mounting groove is formed in one surface of the body, which faces the rectifying module, and the section of the mounting groove is in a convex shape and is used for mounting a fastener to connect the rectifying module in series.

On the basis of the technical scheme, the fan is preferably further arranged, two fans are arranged on the radiators, and the two radiators are respectively positioned at two ends of the body so as to drive air flow to flow in the flow channel formed by the radiating fins.

On the basis of the above technical scheme, preferably, the radiator further comprises a side sealing plate, the body is provided with a slot, and the side sealing plate is inserted into the slot to seal one side of the flow passage, so that the flow passage only has a port facing the fan.

On the basis of the technical scheme, preferably, the connecting piece is a single-head screw or a double-head screw.

Compared with the prior art, the single-phase rectifying component has the following beneficial effects:

(1) The rectifier module is divided into the plurality of bridge arm groups, each bridge arm group is provided with one radiator, and the bridge arm groups are directly fixed on the radiator, so that the rectifier module is convenient to connect with the radiator, has a simple integral structure, improves the heat radiation efficiency, and is suitable for high-frequency high-voltage rectification work; secondly, the radiator is arranged on the insulating plate and is provided with a connecting piece for connecting the insulating plates in the rectifying modules, so that a plurality of rectifying modules can be connected in series, and the convenience of assembly grouping is effectively improved;

(2) The bridge arm group is formed by connecting a plurality of rectifying modules with diodes and resistors in series and parallel, and the rectifying modules are arranged in groups, so that the device has the characteristic of excellent heat dissipation performance, and the diodes adopt fast recovery rectifying diodes, so that the device can carry out high-frequency high-voltage rectification;

(3) Be provided with the side seal board on the radiator and be used for the encapsulation runner for the runner has only two ports towards two fans, so, can effectually improve the radiating efficiency of radiator, make this one-way rectification subassembly satisfy high-power rectification demand.

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 perspective view of a single phase rectifying assembly of the present utility model;

FIG. 2 is a top view of a single phase rectifying assembly of the present utility model;

FIG. 3 is a front view of a single-phase rectifying assembly of the present utility model;

FIG. 4 is a side view of a single-phase rectifying assembly of the present utility model;

FIG. 5 is an exploded view of a heat sink of the single-phase rectifying assembly of the present utility model;

FIG. 6 is a block diagram of an insulating plate of a single-phase rectifying assembly according to the present utility model;

FIG. 7 is a schematic diagram of a single-phase rectifying assembly according to the present utility model;

in the figure: rectifying module 1, bridge arm group 11, rectifying unit 00, rectifying module 01, radiator 12, body 121, radiating fin 122, side seal plate 123, mounting groove 101, runner 102, slot 103, insulating plate 13, connecting piece 2, fan 3, resistor R, diode VD.

Detailed Description

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

As shown in fig. 1 to 7, the single-phase rectifying assembly of the present utility model includes a rectifying module 1, a connecting member 2, and a fan 3.

The rectifying module 1 is used for circuit rectification and is provided with a rectifying bridge circuit, the rectifying modules 1 are arranged in two ways, and the two rectifying modules 1 are grouped through the connecting piece 2 and used for unidirectional rectification.

In the rectification process, particularly high-voltage high-power rectification, the rectification component can generate heat, so that the arrangement of all circuit elements is very important in order to ensure the heat dissipation efficiency.

Specifically, the rectifying module 1 comprises bridge arm groups 11, a radiator 12 and an insulating plate 13, wherein at least two bridge arm groups 11 are arranged on the radiator 12, and the two bridge arm groups 11 are electrically connected in parallel; the heat sinks 12 are arranged on the insulating plates 13, and the number of the heat sinks 12 corresponds to the number of the bridge arm groups 11; the connecting piece 2 is connected with the insulating plates 13 of the two rectifying modules 1. According to the structure, the rectifying module 1 is subdivided into the two bridge arm groups 11, each bridge arm group 11 corresponds to one radiator 12, and the bridge arm groups 11 are fixed on the radiators 12, so that heat conduction can be better realized, the efficiency of a radiating wire is improved, the heat concentration of a rectifying circuit is avoided, the convenience of installation of the bridge arm groups 11 and radiating elements is improved, and the overall structure is simpler.

Preferably, the connecting piece 2 is a single-head screw or a double-head screw, and is fastened and connected through bolts, so that the connecting piece has the advantage of convenience in disassembly and assembly.

In the rectifying module 1, the bridge arm group 11 comprises two rectifying units 00, the two rectifying units 00 are electrically connected in parallel, each rectifying unit 00 comprises six diodes VD, the six diodes VD are electrically connected in series, and each two diodes VD form a rectifying module 01. With the structure, the unidirectional rectifying assembly is provided with 24 rectifying modules 01, and the rectifying modules 01 are connected in series and in parallel for use, so that the rectifying unit 00 and the bridge arm group 11 are formed, the minimum radiating unit is the rectifying module 01, and the unidirectional rectifying assembly can radiate heat under a high-power rectifying working condition.

Further, in the unidirectional rectifying component, the resistors R are further provided, the number of the resistors R corresponds to the number of the diodes VD, the resistors R are disposed on the insulating plate 13, and the resistors R and the diodes VD are electrically connected in parallel. The resistor R is preferably a high-voltage ceramic resistor and is used for shunt voltage equalizing of the element.

Preferably, the diode is a 300A/1200V fast recovery rectifier diode. The method has the advantage of short reverse recovery time, and is suitable for high-power rectification work of high frequency and high voltage. The single-phase rectifying component is used for rectifying an AC5000V alternating current circuit.

In a conventional collator, the maximum rectifying voltage of a single diode VD is 1000V generally, and due to the structural advantage, the unidirectional rectifying component can process single-phase AC5500 and circuit rectifying work with the maximum frequency of 45KHz, the rated direct current output voltage is DC5000V, the rated direct current output current is DC500A, and the rated technical index is higher than the actual application condition, so that stable rectifying work can be ensured.

The unidirectional rectifying component has the advantages that the minimum unit is the rectifying module 01 with the two diodes VD, the bridge arm group 11 is divided into the two rectifying units 00, the unidirectional rectifying component can be subjected to high-frequency rectification by connecting the diodes VD in series while ensuring heat dissipation, and the distributed capacitance and the distributed inductance cannot be ignored along with the improvement of rectifying frequency.

To facilitate the installation of the rectifying units 00, six rectifying modules 01 in two rectifying units 00 are arranged in a row. Thus, the arrangement of the rectifying modules 01 is facilitated, and meanwhile, the series resistor R is facilitated.

In the unidirectional rectifying component, the radiator 12 is an air-cooled radiator and comprises a body 121, radiating fins 122 and a mounting groove 101, wherein a plurality of radiating fins 122 are arranged on the body 121, and the radiating fins 122 are arranged in parallel. In the above-described configuration, the heat radiating fins 122 radiate heat by transferring the heat transferred from the rectifier module 01 to the main body 121 to the air.

In order to facilitate the installation of the rectifying module 01, the installation groove 101 is formed on one surface of the body 121 facing the rectifying module 01, and the section of the installation groove is in a convex shape and is used for installing a fastener to connect the rectifying module 01 in series. The fastener adopts the bolt can for the rectifier module 01 in this unidirectional rectifier subassembly can be convenient install on the radiator 12, convenient follow-up maintenance work simultaneously.

Further, the heat sinks 12 are provided with fans 3, two fans 3 are provided on the heat sinks 12, and the two heat sinks 12 are respectively located at two ends of the body 121, so as to drive the air flow to flow in the flow channel 102 formed by the plurality of heat dissipation fins 122. In the above structure, the two fans 3 may be disposed in a pair of air blowing, pair of air sucking, or one air blowing and one air sucking manner, so as to take away the heat emitted from the heat radiating fins 122.

Since the two adjacent heat dissipation fins 122 have larger openings, the working of the fan 3 cannot be fully utilized, and therefore, the side sealing plate 123 is arranged on the heat sink, the slot 103 is arranged on the body 121, and the side sealing plate 123 is inserted into the slot 103 to seal one side of the flow channel 102, so that the flow channel 102 only has a port facing the fan 3. In the above structure, when the large opening of the side part of the flow channel 102 is sealed by the side sealing plate 123, the ports at the two ends of the radiator 12 face to one fan 3 respectively, and at this time, the two fans 3 work cooperatively in a blowing and sucking mode, so that the circulation speed of air in the flow channel 102 can be increased, and the heat dissipation efficiency is improved, so that the unidirectional rectifying component is ensured not to be damaged due to overheating.

In the specific implementation step, when the device is assembled, the rectifier module 01 is connected and fixed with the mounting groove 101 of the radiator 12 through a fastener, the resistor R is integrated on the insulating plate 13, then the radiator 12 is connected with the insulating plate 13, the diodes VD in the rectifier module 01 are connected with the resistor R in series to form the bridge arm group 11, so that the rectifier module 1 is formed, the fans 3 are mounted at two ends of the radiator 12 for heat dissipation, and finally the insulating plates 13 in the rectifier modules 1 are connected in series and fixed through the connecting pieces 2 to form the unidirectional rectifier assembly. In the rectifying module 1, a diode VD is used for rectifying, and a resistor R is used for equalizing voltage of a circuit.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A single-phase rectifying assembly, characterized by: the device comprises a rectifying module (1) and connecting pieces (2), wherein at least two rectifying modules (1) are arranged, and the two rectifying modules (1) are connected through the connecting pieces (2);

the rectifying module (1) comprises a bridge arm group (11), a radiator (12) and an insulating plate (13), wherein,

the two bridge arm groups (11) are arranged on the radiator (12), and the two bridge arm groups (11) are electrically connected in parallel;

the heat radiators (12) are arranged on the insulating plates (13), and the number of the heat radiators (12) corresponds to the number of the bridge arm groups (11);

the connecting piece (2) is connected with the insulating plates (13) of the two rectifying modules (1).

2. The single-phase rectifying assembly according to claim 1, wherein: the bridge arm group (11) comprises two rectifying units (00), the two rectifying units (00) are electrically connected in parallel, each rectifying unit (00) comprises six diodes (VD), the six diodes (VD) are electrically connected in series, and each two diodes (VD) form a rectifying module (01).

3. The single-phase rectifying assembly according to claim 2, wherein: the LED lamp further comprises resistors (R), the number of the resistors (R) corresponds to the number of the diodes (VD), the resistors (R) are arranged on the insulating plate (13), and the resistors (R) are electrically connected with the diodes (VD) in a parallel mode.

4. The single-phase rectifying assembly according to claim 3, wherein: the diode (VD) is a 300A/1200V fast recovery rectifier diode.

5. The single-phase rectifying assembly according to claim 4, wherein: the single-phase rectifying component is used for rectifying an AC5000V alternating current circuit.

6. The single-phase rectifying assembly according to claim 2, wherein: six rectifying modules (01) in two rectifying units (00) are arranged in a column.

7. The single-phase rectifying assembly according to claim 6, wherein: the radiator (12) is an air-cooled radiator and comprises a body (121), radiating fins (122) and a mounting groove (101), wherein,

the body (121) is provided with a plurality of radiating fins (122), and the radiating fins (122) are arranged in parallel;

the mounting groove (101) is formed in one surface of the body (121) facing the rectifying module (01), the section of the mounting groove is in a convex shape, and the mounting groove is used for mounting a fastener to connect the rectifying module (01) in series.

8. The single-phase rectifying assembly according to claim 7, wherein: the heat radiator also comprises fans (3), wherein two fans (3) are arranged on the heat radiator (12), and the two heat radiators (12) are respectively positioned at two ends of the body (121) so as to drive air flow to flow in the flow channels (102) formed by the plurality of heat radiating fins (122).

9. The single-phase rectifying assembly according to claim 8, wherein: the radiator (12) further comprises a side sealing plate (123), the body (121) is provided with a slot (103), and the side sealing plate (123) is inserted into the slot (103) to seal one side of the flow channel (102), so that the flow channel (102) only has a port facing the fan (3).

10. The single-phase rectifying assembly according to claim 1, wherein: the connecting piece (2) is a single-head screw or a double-head screw.