CN211209578U

CN211209578U - Novel 10kW liquid cooling power module

Info

Publication number: CN211209578U
Application number: CN201921831632.7U
Authority: CN
Inventors: 张治国
Original assignee: Ecu Electronics Industrial Co ltd
Current assignee: Ecu Electronics Industrial Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-08-07
Anticipated expiration: 2029-10-28

Abstract

The utility model discloses a power module technical field's a novel 10kW liquid cooling power module, which comprises a housin, be equipped with the full-bridge DCDC circuit that shifts the phase and three-phase three-level APFC circuit in the casing, three-phase three-level APFC circuit output is connected to the input that shifts the full-bridge DCDC circuit, and the main power circuit board and the control circuit board separation of three-phase three-level APFC circuit, and the electronic component of main power circuit board installs on the heat dissipation base plate, and the full-bridge DCDC circuit that shifts the phase includes a plurality of transformers, and the former limit of transformer is established ties and the secondary. The utility model has the advantages of small, the platyzization, and heat dispersion is good, is suitable for and uses in the limited occasion in special space.

Description

Novel 10kW liquid cooling power module

Technical Field

The utility model relates to a power module field specifically is a novel 10kW liquid cooling power module.

Background

The active APFC circuit is used as a front-stage circuit, and the DCDC circuit is used as a module power supply of a rear-stage circuit, so that the harmonic wave on the side of a power grid is reduced, and the output is also stabilized. The power supply generally adopts air cooling, has large noise, poor heat dissipation effect and large volume, is generally only used for constant-current or constant-voltage output, and is unstable when connected with a pulse load, such as a 7.5kW power module for a charging motor.

In some special situations, for example, some devices operating in a pulsed mode require a small power supply module to accommodate rapid changes in load due to limited space. Thus, the conventional air-cooled power module has a large volume and is not suitable, and a power module which has a small volume and can adapt to a pulse load must be developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel 10kW liquid cooling power module to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a novel 10kW liquid cooling power module, includes the casing, be equipped with phase-shifting full-bridge DCDC circuit and three-phase three-level APFC circuit in the casing, three-phase three-level APFC circuit output is connected to phase-shifting full-bridge DCDC circuit's input, three-phase three-level APFC circuit's main power circuit board and control circuit board separation, the electronic component of main power circuit board installs on the heat dissipation base plate, phase-shifting full-bridge DCDC circuit includes a plurality of transformers, just the primary side of transformer is established ties and the secondary side is parallelly connected.

As the utility model discloses an improvement scheme, in order to further improve the heat conduction efficiency of the inside heat dissipation base plate of casing, the integrated water-cooling board that has the parallel and laminate in heat dissipation base plate in the casing, the main power circuit board of three-phase three-level APFC circuit is fixed with the copper post connection of control circuit board upper and lower parallel distribution and through four corners department.

As the utility model discloses a modified scheme, in order to further reduce electronic component's installation volume, the inside filter capacitor of full-bridge DCDC circuit of phase-shifting is paster ceramic chip electric capacity.

As the utility model discloses an improvement scheme, the interference that receives when further reducing power module data transmission, three-phase three-level APFC circuit all transmits data to the single chip microcomputer control end through opto-coupler isolation circuit with the full-bridge DCDC circuit that shifts phase.

As the improvement scheme of the utility model, in order to further realize powerful pulse output, the quantity of transformer is 4 at least.

Has the advantages that: in the technical scheme, the main power circuit board and the control circuit board of the three-phase three-level APFC circuit are separated, and the main power circuit board with large heat productivity and high power is directly installed on the heat dissipation substrate, so that the heat dissipation mode of the conventional power module is improved; synchronously, the transformer adopts the connection mode of primary side series connection and secondary side parallel connection, and is matched with the structure that the main power board is separated from the control circuit board, so that the size of the whole transformer is smaller and flatter, and the transformer is favorable for adapting to special occasions with limited space.

Drawings

FIG. 1 is a block diagram of the structure of the present invention;

fig. 2 is a connection diagram of the internal circuit of the three-phase three-level APFC circuit of the present invention;

FIG. 3 is a block diagram of the phase-shifted full-bridge DCDC circuit according to the present invention;

FIG. 4 is a diagram of the connection mode of the transformer of the present invention;

fig. 5 is the optical coupling isolation circuit diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-4, an embodiment of the present invention, a novel 10kW liquid cooling power module, including the casing, be equipped with the full-bridge DCDC circuit that shifts the phase and the three-phase three-level APFC circuit in the casing, three-phase three-level APFC circuit output is connected to the input that shifts the full-bridge DCDC circuit, and the main power circuit board and the control circuit board separation of three-phase three-level APFC circuit, and the electronic component of main power circuit board is installed on the heat dissipation base plate, the full-bridge DCDC circuit that shifts the phase includes a plurality of transformers, just the primary side of transformer is established ties and the secondary side is.

In this embodiment, the main power circuit board of the three-phase three-level APFC circuit is separated from the control circuit board, so that the heat dissipation mode of the power module is changed, the connection mode of the serial connection of the primary sides and the parallel connection of the secondary sides of a plurality of transformers of the phase-shifted full-bridge DCDC circuit is further combined, the output rectification adopts the full-wave rectification mode, so that the volume of the shell is further reduced and becomes flat, the current in the transformers can be output approximately in a current-sharing manner by the full-wave rectification mode, the loop response speed is accelerated, and the high-power pulse output of 600Hz can be realized. Therefore, the utility model discloses can make power module's volume obtain reducing to it does not receive the influence to have changed the heat dispersion that the radiating mode made power module, is more suitable for the constrictive installation occasion in special space.

The three-phase three-level APFC is digitally controlled by a DSP, and a software control algorithm is an SVPWM (space vector pulse width modulation) algorithm; the phase-shifted full-bridge DCDC circuit is controlled by a special PWM chip UCC28950, has high dynamic response speed, simultaneously controls the start and stop of the three-phase three-level APFC circuit and the phase-shifted full-bridge DCDC circuit through a single chip microcomputer, and acquires voltage/current signals.

Embodiment 2, the integrated water-cooling board that is parallel and laminating in the heat dissipation base plate in the casing, the main power circuit board of three-phase three-level APFC circuit and control circuit board upper and lower parallel distribution are connected fixedly through the copper post of four corners department.

In this embodiment, 10 KW's power module adopts liquid cooling plug-in components formula structure, and the front panel of casing passes through the screw and fixes with the mounting frame locking promptly, leaves the locating pin hole on the back plate of casing to the installation locating pin is fixed a position. The overall dimension (length, width and height) of the whole power module shell is 575mm, 42mm and 223mm, wherein the overall power module shell does not contain the interface dimension of the telecommunication connector, is flat and has excellent heat dissipation performance.

When the APFC circuit works, the electronic elements on the main power circuit board of the three-phase three-level APFC circuit are arranged on the heat dissipation substrate which is an aluminum substrate, so that the aluminum substrate can transfer heat to the water cooling plate, and the water cooling plate is provided with a cavity type heat dissipation channel or a pressure tube type heat dissipation channel for taking away the heat dissipated by the electronic elements on the main power circuit board through the flowing of liquid. Meanwhile, the main power board is connected with the control circuit board through the copper columns, so that the size is reduced on one hand, and heat conduction and heat dissipation through the copper columns are facilitated on the other hand.

In addition, power production process adopts reflow soldering technology in this embodiment, is fit for large-scale production, and power module is whole prevents the processing of spraying paint, makes the utility model discloses can work under moist adverse circumstances.

In embodiment 3, the filter capacitor inside the phase-shifted full-bridge DCDC circuit is a chip capacitor. The patch type mounting mode enables the total capacitance of the power module to be reduced to the maximum extent and is beneficial to reducing the mounting volume.

In embodiment 4, referring to fig. 5, the three-phase three-level APFC circuit and the phase-shifted full-bridge DCDC circuit transmit data to the control end of the single chip via the optical coupling isolation circuit. The optical coupling isolation circuit can transmit voltage and current data to the single chip microcomputer in a three-phase three-level APFC circuit and a phase-shifted full-bridge DCDC circuit, and the interference of data transmission is small.

Example 5 the number of transformers was at least 4. The transformers are high-frequency isolation planar transformers, the number of the transformers is at least 4, and 600HZ high-power pulse output can be realized in a limited equipment space.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a novel 10kW liquid cooling power module, includes the casing, be equipped with the full-bridge DCDC circuit of phase shift and the three-phase three-level APFC circuit in the casing, three-phase three-level APFC circuit output is connected to the input of full-bridge DCDC circuit of phase shift, a serial communication port, the main power circuit board and the control circuit board separation of three-phase three-level APFC circuit, the electronic component of main power circuit board installs on the radiating basal plate, the full-bridge DCDC circuit of phase shift includes a plurality of transformers, just the primary side of transformer is established ties and the secondary is parallelly connected.

2. The novel 10kW liquid cooling power supply module according to claim 1, wherein a water cooling plate which is parallel to and attached to a heat dissipation substrate is integrated in the housing, and a main power circuit board and a control circuit board of the three-phase three-level APFC circuit are vertically distributed in parallel and are connected and fixed through copper columns at four corners.

3. The novel 10kW liquid cooling power supply module according to claim 1 or 2, wherein the filter capacitor inside the phase-shifted full-bridge DCDC circuit is a chip capacitor.

4. The novel 10kW liquid cooling power module of claim 1 or 2, wherein the three-phase three-level APFC circuit and the phase-shifted full-bridge DCDC circuit transmit data to the control end of the single chip microcomputer through the optical coupling isolation circuit.

5. The novel 10kW liquid-cooled power module of claim 1 or 2, wherein the number of the transformers is at least 4.