CN214850987U

CN214850987U - High-voltage direct-current power supply

Info

Publication number: CN214850987U
Application number: CN202120716733.0U
Authority: CN
Inventors: 李显洋; 武猛
Original assignee: Wuhan Jingneng Electronic Technology Co ltd; Wuhan Jingce Electronic Group Co Ltd
Current assignee: Wuhan Jingneng Electronic Technology Co ltd; Wuhan Jingce Electronic Group Co Ltd; Wuhan Jingce Electronic Technology Co Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-11-23
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a high voltage direct current power supply, which comprises an outer shell body, the integration has the rectifier module and a plurality of main power module that are used for turning into high voltage direct current power supply output with the alternating current power supply of input in the shell body, and every main power module includes interior casing, be provided with the wind channel that runs through in the interior casing, the tip in at least one side wind channel is provided with the fan, the middle part in wind channel is provided with along radiator and the power board of arranging from top to bottom in perpendicular to wind channel axis direction. The utility model is not only simple in structure, and can be targeted to the regional pointed heat dissipation that has sent out of high voltage direct current power supply's large heat, improved high voltage direct current power supply's radiating efficiency effectively.

Description

High-voltage direct-current power supply

Technical Field

The utility model discloses a direct current power supply belongs to high voltage power supply technical field, specifically discloses a high voltage direct current power supply.

Background

With the development and maturity of the switching power supply technology, the dc high-voltage power supply developed by combining the high-frequency switching conversion technology and the characteristics of the high-voltage power supply becomes the mainstream. The mode solves the problems of low frequency, large volume and weight of a power supply, poor conversion efficiency and stability and the like caused by the traditional step-up by adopting a high-voltage transformer. At present, a high-voltage direct-current power supply is widely applied to the industry fields of data centers, server power supplies, vehicle-mounted chargers, battery packs, automatic test systems and the like, and has a wide application prospect.

The utility model discloses a chinese utility model patent CN209057419U discloses an insulation and heat radiation structure of high-power high voltage dc power supply of special type, it includes organism, base and rubber sleeve, the outer wall of organism is connected with the mount all around, and is threaded connection between organism and the mount, the handle is installed to the right side upper end of organism, and the right side of organism distributes and have operating panel, the base is inlayed in the lower extreme both sides of organism, and the lower extreme of base is fixed with the slipmat to for splicing between base and the slipmat, rubber sleeve sets up in the left side lower extreme of organism, and rubber sleeve's inboard runs through there is the power connecting harness. Although this technical scheme has good high temperature resistant insulating effect, and can guarantee that the user can not take place the danger of electrocuteeing when touching the organism, nevertheless, because it can't have corresponding directly dispels the heat to the power board, so there are the structure bulky, the radiating effect is poor, and charge-discharge is unstable, and the precision can not reach the requirement, work efficiency low grade problem.

SUMMERY OF THE UTILITY MODEL

To the technical problem who exists among the prior art, the utility model provides a high voltage direct current power supply, it is simple structure not only, and can be targeted to the regional heat dissipation that has pertinence to the large heat generation amount of high voltage direct current power supply, improved high voltage direct current power supply's radiating efficiency effectively.

The utility model discloses a high voltage direct current power supply, which comprises an outer shell body, the integration has the rectifier module and a plurality of main power module that are used for turning into high voltage direct current power supply output with the alternating current power supply of input in the shell body, and every main power module includes interior casing, be provided with the wind channel that runs through in the interior casing, the tip in at least one side wind channel is provided with the fan, the middle part in wind channel is provided with along radiator and the power board of arranging from top to bottom in perpendicular to wind channel axis direction.

In a preferred embodiment of the present invention, the power board is provided with a MOS transistor on a terminal surface facing the heat sink.

In a preferred embodiment of the present invention, a heat conducting pad is disposed between the power board and the heat sink.

In a preferred embodiment of the present invention, the inner housing and the power board are provided with cover insulating paper therebetween, and the inner housing and the heat sink are provided with heat sink insulating paper therebetween.

In a preferred embodiment of the present invention, the inner housing comprises a module cover plate having a U-shaped cross-sectional shape and a module base having a U-shaped cross-sectional shape, the module cover plate being inserted into the module base.

In a preferred embodiment of the present invention, the inner housing is provided with a fixing strip for limiting the power board from left to right.

In a preferred embodiment of the present invention, the main power modules include three, and three main power modules are arranged in the outer casing at equal intervals.

In a preferred embodiment of the present invention, the rectifier module includes an element plate, a filter plate, and a main control plate disposed between the outer case and the main power module.

The utility model discloses an in a preferred embodiment, the shell body includes that the cross sectional shape is the box body of U-shaped, the upper end of box body is connected with the apron, both sides are connected with parallel arrangement's front panel and backplate around the box body.

In a preferred embodiment of the present invention, the front panel and the rear panel are all provided with a heat dissipation opening corresponding to the arrangement position of the main power module.

The utility model has the advantages that: the utility model has the advantages of simple structure, high integration and good heat dissipation, the invention realizes modular assembly by independently sealing the main power module with large heat generation quantity in the high-voltage direct-current power supply, not only ensures that the internal functional module of the equipment is clearly decomposed and the structural layout is scientific and reasonable, and is convenient for later maintenance, but also can effectively realize high-efficiency heat dissipation of a single power plate, thereby greatly reducing the heat generation quantity of the whole machine and providing better operating environment for internal devices; furthermore, the MOS tube is arranged on the power board, so that the voltage stabilization effect can be achieved; furthermore, the heat conducting pad is additionally arranged between the power plate and the radiator, so that the heat radiating efficiency of the power plate is effectively improved; furthermore, the utility model discloses a be provided with the apron insulated paper between inner casing and power board, be provided with radiator insulated paper between inner casing and the radiator to the electric current does not leak when guaranteeing power board during operation effectively, has improved the security performance of product; furthermore, the utility model designs the inner shell into the structure of the module cover plate with the U-shaped cross section and the module base with the U-shaped cross section, thereby not only facilitating the integrated packaging of the main power module, but also effectively preventing dust from accumulating on the power board, and further prolonging the service life of the power board; furthermore, the utility model ensures the stability of the installation position of the power board by arranging the fixing strip for limiting the power board left and right on the inner shell, and the vibration in the transportation and use process can not influence the work of the high voltage direct current power supply; further, the utility model discloses a rational arrangement in the shell has the advantage that power density is high, under equal structure volume, the utility model discloses a structure has the higher power output of realization for other technical scheme among the prior art, saves the whole volume of system effectively.

Drawings

Fig. 1 is a main circuit structure diagram of a high voltage dc power supply of the present invention;

FIG. 2 is a schematic diagram of the whole high voltage DC power supply of the present invention;

fig. 3 is a front view of a high voltage dc power supply of the present invention;

fig. 4 is a rear view of a high voltage dc power supply of the present invention;

fig. 5 is an exploded view of the whole high voltage dc power supply of the present invention;

fig. 6 is an exploded view of a module of a high voltage dc power supply according to the present invention;

in the figure: 1-cover plate; 2-a back panel; 3-a main power module; 4-a box body; 5-a front panel; 6-element plate; 7-a filter plate; 8-a main control panel; 9-module cover plate; 10-cover plate insulating paper; 11-a power board;

12-MOS tube; 13-a thermally conductive pad; 14-a heat sink; 15-a fan; 16-a fixing strip; 17-a module control board; 18-a module base; 19-radiator insulating paper.

Detailed Description

The technical solutions of the present invention (including the preferred technical solutions) are further described in detail below by means of the attached drawings and some optional embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As can be seen from the attached drawings 1-6 of the specification, the utility model discloses a high voltage direct current power supply, including the shell body, it is used for turning into the rectifier module and a plurality of main power module 3 of high voltage direct current power supply output with the alternating current power supply of input to integrate in the shell body, its characterized in that: each main power module 3 comprises an inner shell, a through air channel is arranged in the inner shell, a fan 15 is arranged at the end part of the air channel on at least one side, a radiator 14 and a power plate 11 which are vertically arranged along the direction perpendicular to the central axis of the air channel are arranged in the middle of the air channel, and the airflow direction of the fan is from front to back. The module fan is fixed on the module base through screws, and the power supply line of the fan penetrates out through the open hole of the upper cover.

Preferably, each main power module 3 mainly includes an upper cover plate, a base, a heat sink, a fixing member, a PFC module, a DCDC module, a BUCK module, and a MOS transistor. Each module, module output voltage 500V, current 30A.

Preferably, the circuit of the main power module mainly comprises a PFC module, a DCDC module and a BUCK module, and the MOS tube 12 is disposed on the end surface of the power board 11 facing the side of the heat sink 14, so as to perform a voltage stabilizing function, but when the power board works, more heat is dissipated, and the heat sink needs to be used for auxiliary heat dissipation. The bottom of the power board is provided with two large radiators which are connected together through two fixing pieces and finally installed on the module base. All devices of the power module are uniformly distributed on the power board, and the power board is supported on the radiator through copper pillars.

Preferably, the main control board 8 on the power board 11 is installed in the following manner: fixed by 2 pin header bases.

Preferably, the mounting mode of the MOS tube is as follows: first, a thermal pad is pasted on the top of the heat sink 14, and then fixed to the power board 11.

Preferably, a thermal pad 13 is disposed between the power board 11 and the heat sink 14.

Preferably, a cover insulating paper 10 is disposed between the inner case and the power board 11, and a heat sink insulating paper 19 is disposed between the inner case and the heat sink 14.

Preferably, the inner housing comprises a module cover 9 having a U-shaped cross-section and a module base 18 having a U-shaped cross-section, the module cover 9 and the module base 18 being plugged together.

Preferably, the inner case is provided with a fixing bar 16 for limiting the power board 11 right and left.

Preferably, the main power modules 3 comprise three main power modules 3, the three main power modules 3 are arranged in the outer shell at equal intervals, and the three main power modules 3 are fixed by screws on the side surfaces and the bottom surface through element plates 6.

Preferably, the element board 6 is provided with a relay board, a filter board 7, a main control board 8, a communication board, and other functional units.

Preferably, the main control panel 8 includes machine and front panel display screen, keys, knob communication control, external GPIB, LAN, USB communication, host-slave communication, analog input, parallel operation, and external interface exposed from the back panel.

Preferably, the rectifier module comprises an element plate 6, a filter plate 7 and a main control plate 8 which are arranged between the outer shell and the main power module 3, and one main control plate 8 (controlled by a DSP and used for increasing software workload) controls the voltage and current output by the whole machine and the voltage of each module, so that the hardware cost can be saved.

Preferably, the design of shell body size reference 4U standard machine case, the overall dimension is wide 440 high 174 deep 650mm (excluding handle and output terminal leakage height), the shell body includes box body 4 that the cross sectional shape is the U-shaped, the upper end of box body 4 is connected with apron 1, the front and back both sides of box body 4 are connected with parallel arrangement's front panel 5 and postnotum 2, the inner structure of shell body mainly comprises main power module, control panel, output board, filter board, LED indicator lamp plate, fan, MOS pipe, switch etc..

Preferably, the current and signal input and output are designed on the back panel, and the display and operation functions are distributed on the front panel, so that the intelligent power supply is scientific and reasonable and has high safety.

Preferably, the front panel 5 and the rear panel 2 are each provided with a heat radiation port corresponding to the arrangement position of the main power module 3.

Preferably, the output end of the back plate 2 is designed with an output filtering plate, which is directly fixed above the output copper bar and connected with the copper bar through a copper column, wherein two mounting screws are connected with the back plate.

Preferably, the upper part of the front panel 5 is provided with a display screen and a key signal board, and the lower part is provided with an air inlet and is provided with a ventilating board and a dustproof net.

Use the utility model discloses the time, the commercial power reachs the relay control panel of 6 rear ends of component board from 2 input terminal inputs of afterbody backplate, then connects to anterior switch realization power break-make. The three-phase alternating current that the relay control panel inserts changes to three-phase input filter plate 7, then divides into three routes and reaches single-phase input filter plate 7, and the signal of telecommunication after the filtering gets into three main power module 3 in lower part. The high-voltage direct current obtained by processing of the main power module 3 is processed by the output filter plate 2 of the rear back plate and then is output outwards. In order to reduce interference, the magnetic ring is sleeved with the alternating current input line, the direct current output line and the internal signal line. The AC input line can also be sheathed with a shielding copper belt in a twisted way, the copper belt is grounded, the signal line is sheathed with a ferrite magnetic ring, and the power line is sheathed with an amorphous magnetic ring. The AC input line is added with an EMI filter, and the output port is connected with an X capacitor and a Y capacitor

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.

Claims

1. A high voltage dc power supply, comprising an outer casing, wherein a plurality of main power modules (3) and a rectifier module for converting an input ac power supply into a high voltage dc power supply output are integrated in the outer casing, characterized in that: each main power module (3) comprises an inner shell, a through air channel is arranged in the inner shell, a fan (15) is arranged at the end part of the air channel on at least one side, and a radiator (14) and a power plate (11) which are arranged up and down along the direction perpendicular to the central axis of the air channel are arranged in the middle of the air channel.

2. The high voltage direct current power supply of claim 1, wherein: and an MOS (metal oxide semiconductor) tube (12) is arranged on the end face of the power board (11) facing to one side of the radiator (14).

3. The high voltage direct current power supply of claim 2, wherein: a heat conducting pad (13) is arranged between the power plate (11) and the radiator (14).

4. The high voltage direct current power supply of claim 1, wherein: cover plate insulating paper (10) is arranged between the inner shell and the power plate (11), and radiator insulating paper (19) is arranged between the inner shell and the radiator (14).

5. The high voltage direct current power supply of claim 1, wherein: the inner shell comprises a module cover plate (9) with a U-shaped cross section and a module base (18) with a U-shaped cross section, and the module cover plate (9) is connected with the module base (18) in an inserting mode.

6. The high voltage direct current power supply of claim 1, wherein: the inner shell is provided with a fixing strip (16) used for limiting the power board (11) leftwards and rightwards.

7. The high voltage direct current power supply of claim 1, wherein: the main power modules (3) comprise three main power modules (3), and the three main power modules (3) are arranged in the outer shell at equal intervals.

8. The high voltage direct current power supply of claim 1, wherein: the rectifying module comprises an element plate (6), a filtering plate (7) and a main control plate (8) which are arranged between the outer shell and the main power module (3).

9. The high voltage direct current power supply of claim 1, wherein: the shell body comprises a box body (4) with a U-shaped cross section, a cover plate (1) is connected to the upper end of the box body (4), and a front panel (5) and a back panel (2) which are arranged in parallel are connected to the front side and the back side of the box body (4).

10. The high voltage dc power supply of claim 9, wherein: and the front panel (5) and the rear back plate (2) are respectively provided with a heat dissipation opening corresponding to the arrangement position of the main power module (3).