CN112309710A

CN112309710A - Capacitor module mounting mode of power supply equipment

Info

Publication number: CN112309710A
Application number: CN202011220269.2A
Authority: CN
Inventors: 周旺龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-02-02

Abstract

The utility model provides a capacitor module's structural mounting mode, aims at solving capacitor module and installs in dampproofing dustproof high-grade protecting casing, and the outside heat dissipation of casing reduces inside temperature rise problem, and capacitor module includes capacitor assembly, the integrative triplex of airtight mounting panel and radiator, and airtight mounting panel will capacitor module divide into built-in capacitor assembly and external radiator, on the mounting panel was installed capacitor module airtight reservation mounting hole position of power supply unit casing, built-in capacitor assembly was connected with mainboard or generating line copper bar electricity, and according to the capacitor module mounting mode of embodiment, with the loss heat of condenser give off airtight casing outside through external radiator, effectively reduce the inside temperature rise of electrical equipment casing and equipment failure rate, satisfy power supply unit's dustproof dampproofing high protection grade requirement.

Description

Capacitor module mounting mode of power supply equipment

The technical field is as follows:

the invention relates to the technical field of structural design of electrical equipment, in particular to a method for installing and applying a power bus capacitor module to electrical equipment such as a switching power supply, an inverter or a frequency converter.

Background art:

electric equipment such as a switching power supply, an inverter or a frequency converter and the like adjusts output voltage and frequency by means of switching on and off of IGBT/MOSFET semiconductor devices, required power supply voltage is provided according to actual needs so as to achieve the purpose of energy saving, a power bus capacitor is required to be adopted for filtering and stabilizing voltage for balancing voltage fluctuation caused by switching on and off of the IGBT, and due to the action of current and voltage, resistance loss is generated to generate heat, so that proper heat dissipation and cooling measures are required to be adopted to guarantee safe operation of the equipment.

Generally, electrical equipment is cooled in a 'straight ventilation' mode, but high-protection-level electrical equipment in a special application environment, such as a series-type photovoltaic inverter with a protection level above IP65, a charging pile power module and the like, cannot be cooled and cooled in a 'straight ventilation' mode because the air circulation is limited by the dustproof and waterproof inner and outer sealing of a protection shell; and the power bus capacitor has large loss and high heat emission, so that the temperature inside the shell is increased, and the failure rate of components and electrical equipment is increased.

The invention content is as follows:

the invention provides a structural installation mode of a capacitor module, and aims to solve the problems that the capacitor module is installed in a high-protection-level shell, the shell is externally radiated, and the internal temperature rise is reduced.

The utility model provides a capacitor module mounting means, includes the integrative three part of capacitor element, airtight mounting panel and radiator, airtight mounting panel will the capacitor module divide into built-in capacitor element and external radiator, on the airtight mounting panel installed the capacitor module to the reservation through-hole position of power supply unit casing, built-in capacitor element was connected with mainboard or generating line copper bar electricity.

The sealed mounting plate comprises a mounting plate and a sealing piece which are integrated with the capacitor module, the mounting plate and the shell are assembled through screws, and the sealing piece is located between the mounting plate and the shell.

Further, the sealing member may be a structural member, a composite structural member, or a sealant, etc.;

the mounting through hole can be positioned on the main radiator of the power supply equipment, the edge of the main radiator or any side surface of the protective shell;

the built-in capacitor assembly comprises a capacitor module square block and an outgoing electric connecting terminal, wherein the outgoing electric connecting terminal is electrically connected with a main board or a bus copper bar in a screw or tin soldering mode;

the device further comprises a fixed frame, wherein the fixed frame is arranged between the device shell and the electric connection main board or the bus copper bar; the fixing frame is provided with a plurality of fixing units for fixedly connecting the electric connecting terminal of the built-in capacitor assembly and a mainboard or bus copper bar through screws;

furthermore, the lead-out electric connecting terminal of the built-in capacitor assembly can be positioned at the upper side or the lower side of the electric connecting mainboard or the bus copper bar;

according to the capacitor module installation mode of the embodiment, the loss heat of the power bus capacitor is dissipated to the outside of the closed shell through the external radiator, the temperature rise inside the shell of the electrical equipment and the equipment failure rate are effectively reduced, and meanwhile, the fact that the power supply equipment has a dustproof and moistureproof high protection level is guaranteed.

Description of the drawings:

FIG. 1 is a schematic diagram of an external structure of a capacitor module

FIG. 2 is a schematic view of the structure of the mounting through hole and the fixing seat

FIG. 3 is a schematic view of a capacitor module mounting structure

FIG. 4 is a schematic view of the capacitor module and the electrical connection motherboard

The figures in the drawings represent the following:

1-capacitor assembly

11-electrical connection terminal extension

12-electric connection terminal

13-electric connection terminal screw hole

2-sealed mounting plate

21-mounting plate screw hole

22-sealing structure

23-screw hole of sealing structure

24-sealing structural member groove

3-radiator

31-radiator fin

4-fixed mount

41-fixing rack mounting screw hole

42-fixing frame fixing unit

43-fixture electrical connection terminal screw hole

5-capacitor module mounting through-hole on main radiator

6-main radiator

7-power mainboard

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following detailed description and accompanying drawings. In the following embodiments, numerous details are set forth in order to provide a better understanding of the present invention. However, those skilled in the art will readily recognize that certain features may be replaced or omitted by other elements, materials, methods, or the like in various instances. In some cases, related operations are not shown or described in the specification, so as to avoid obscuring the core of the present application from excessive description, and to enable those skilled in the art to fully understand the related operations from the description in the specification and the general knowledge in the art.

The following are preferred embodiments:

the capacitor module shown in fig. 1 comprises three integrated parts, namely a capacitor component 1, a sealed mounting plate 2 and a heat radiator 3, wherein the sealed mounting plate 2 divides the capacitor module into an internal capacitor component 1 and an external heat radiator 3.

The capacitor assembly 1 is composed of a capacitor module square block, an electric connection terminal 12 and an electric connection terminal extension part 11, wherein the electric connection terminal extension part 11 can change the length, the position and the shape according to specific conditions to adapt to the installation requirement of the electric connection terminal 12.

The electric connecting terminal 12 is connected and installed through a screw hole 13 on the terminal in a screw mode.

The hermetic mounting plate is composed of a mounting plate 2 integrated with the capacitor module and a hermetic structural member 22, and the mounting plate 2 is assembled by screws through screw holes 21.

The closed structural component 22 is provided with a screw hole 23 corresponding to the screw hole of the mounting plate 2, and is assembled and mounted with the mounting plate 2 at the same time, and grooves 24 are formed in the upper surface and the lower surface of the inner side of the screw hole 23 of the closed structural component 22 and used for limiting and fixing a sealant or a sealing rubber strip.

The sealing structure 22 surrounds the heat sink 3 and maintains a seal with the mounting plate 2 by using a sealant or sealant strip in the groove 24 between the sealing structure 22 and the mounting plate 2.

As shown in fig. 2, the installation through hole 5 is located on the main radiator 6, the sealing structural member 22 surrounds the installation through hole 5, and the sealing structural member 22 and the casing of the main radiator 6 are kept sealed by using the inner groove 24 of the sealing structural member 22; the screw hole 23 is arranged on the closed structural component 22 and is used for being synchronously arranged with the screw of the mounting plate 2;

the fixing frame 4 is installed on the main radiator 6 by screws through screw holes 41, two groups of fixing units 42 are distributed on the fixing frame 4, and each group of fixing units 42 is provided with two mounting screw holes 43 corresponding to the positions of the electric connection terminal holes 13.

As shown in fig. 3, the external heat sink 3 of the capacitor module penetrates through the mounting through hole 5 on the main heat sink 6, and the mounting screws penetrate through the screw holes 21 on the mounting plate 2 to be mounted with the main heat sink 6, and simultaneously penetrate through the mounting holes 23 of the sealing structural member 22, so that the mounting plate 2 and the main heat sink 6 are sealed.

The electric connection terminal hole 13 is fitted in the electric connection terminal fitting screw hole 43 of the fixing unit 42 of the fixing frame 4 at a position where the fixing frame 4 is fitted to the main radiator 6, corresponding to a position where the built-in capacitor module 1 leads out the electric connection terminal 12.

As shown in fig. 4, the power main board 7 and the capacitor module outgoing electrical connection terminals 12 are assembled on the fixing frame 4 by screws 71, and the screws 71 are installed through the power main board 7, the electrical connection terminal holes 13 and the electrical connection terminal mounting screw holes 43 on the fixing unit 42 of the fixing frame 4 from top to bottom.

In the above embodiment, the internal capacitor component 1 and the power motherboard 7 of the capacitor module are arranged on the inner side of the sealed housing to ensure high sealing protection level, and the fins 31 of the external radiator 3 and the fins of the main radiator 6 of the capacitor module are arranged on the outer side of the sealed housing to make the heat loss of the power bus capacitor radiate to the outside.

The invention has been described above using specific examples, which are only intended to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims

1. The utility model provides a capacitor module mounting means, includes the integrative three part of capacitor element, airtight mounting panel and radiator, airtight mounting panel will the capacitor module divide into built-in capacitor element and external radiator, on the airtight mounting panel installed the capacitor module to the reservation through-hole position of power supply unit casing, built-in capacitor element was connected with mainboard or generating line copper bar electricity.

2. The hermetic mounting plate according to claim 1, comprising a mounting plate integral with the capacitor module and a seal between the mounting plate and the housing.

3. The sealing element according to claim 1, 2, which may be a structural element, a composite structural element or a sealant, etc.

4. The housing mounting through-hole of claim 1, which can be located on the main heat sink of the power device, on the side of the main heat sink, or on either side of the protective housing.

5. The built-in capacitor module as defined in claim 1, comprising a capacitor module and lead-out electrical connection terminals, said lead-out electrical connection terminals being electrically connected to the main board or the busbar by screws or soldering.

6. The capacitor module according to claim 1 or 5, further comprising a fixing frame installed between the device case and the electrically connected main board or busbar, wherein the fixing frame is provided with a plurality of fixing units for screw-fixing the electrically connected terminals of the built-in capacitor assembly and the main board or busbar.

7. The capacitor module as claimed in claim 1, 5 or 6, wherein the outgoing electric connection terminals of the built-in capacitor module are located at the upper side or the lower side of the electric connection main board or the busbar.