CN218940928U

CN218940928U - Multichannel direct current solid-state power distribution device

Info

Publication number: CN218940928U
Application number: CN202223246075.7U
Authority: CN
Inventors: 张李; 刘宏辉; 徐健
Original assignee: Guiyang Aviation Electrical Machinery Co Ltd
Current assignee: Guiyang Aviation Electrical Machinery Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-04-28
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a multichannel direct-current solid-state power distribution device, which comprises a case shell, wherein a high-voltage power distribution module and a low-voltage power distribution module are arranged in the case shell, an external cross-linking interface is arranged on the outer end face of the case shell, which is far away from the high-voltage power distribution module and the low-voltage power distribution module, a support plate is connected between the external cross-linking interface and the high-voltage power distribution module and the low-voltage power distribution module in the case shell, an interconnection motherboard is arranged on the support plate, the high-voltage power distribution module and the low-voltage power distribution module are electrically connected with the interconnection motherboard, and the external cross-linking interface is electrically connected with the interconnection motherboard; according to the modularized design thought, the 28V and 270V multipath direct current loads can be simultaneously subjected to power distribution and power distribution protection, the isolation of the control part and the power part and the mutual isolation of all channels are realized, and the mutual interference is prevented.

Description

Multichannel direct current solid-state power distribution device

Technical Field

The utility model relates to the technical field of power distribution devices, in particular to a multichannel direct current solid-state power distribution device.

Background

Along with the increasing types of electric equipment of an airplane, the situation that high-voltage and low-voltage multipath equipment work simultaneously exists, and a power distribution system adopts a solid-state power distribution mode, so that each load needs to be controlled and protected independently and managed in a centralized mode.

In this context, it is necessary to distribute power to multiple loads simultaneously, and the power distribution channels are isolated from each other to prevent mutual interference.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the multi-channel direct current solid-state power distribution device which can simultaneously distribute and protect 28V and 270V multi-channel direct current loads according to a modularized design thought, and realize the isolation of a control part and a power part and the mutual isolation of all channels, thereby preventing mutual interference.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a multichannel direct current solid-state power distribution device, includes the chassis housing, the inside of chassis housing is provided with high voltage distribution module and low voltage distribution module, the chassis housing is kept away from the outside terminal surface of high voltage distribution module and low voltage distribution module and installs outside cross-linking interface, the inside of chassis housing is connected with the extension board between outside cross-linking interface and high voltage distribution module and low voltage distribution module, install on the extension board and be provided with interconnection motherboard, high voltage distribution module and low voltage distribution module all with interconnection motherboard electric connection, outside cross-linking interface and interconnection motherboard electric connection.

Preferably, the high voltage distribution module has 9 high voltage load power output channels of 270V and the low voltage distribution module has 4 low voltage load power output channels of 28V.

Preferably, the single-channel maximum rated output current of the high-voltage power distribution module and the low-voltage power distribution module is 30A.

Preferably, the external crosslinking interface adopts RS-422 and CAN bus to realize communication.

Preferably, the external crosslinking interfaces have four interfaces, and are respectively: 28V power input, 28V channel output, 270V power input and 270V channel output.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the modularized design thought, power distribution and power distribution protection can be carried out on 28V and 270V multipath direct current loads at the same time;

2. the control part is isolated from the power part, and the channels are isolated from each other, so that mutual interference is prevented.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic diagram of a chassis housing according to the present utility model.

Wherein: 1. a chassis housing; 2. a support plate; 3. an external cross-linking interface; 4. interconnecting the mother boards; 5. a high voltage power distribution module; 6. and the low-voltage power distribution module.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Examples

Referring to fig. 1 and 2, the present utility model provides a multi-channel dc solid-state power distribution device, including a chassis housing 1, a high-voltage power distribution module 5 and a low-voltage power distribution module 6 are disposed in the chassis housing 1, the high-voltage power distribution module 5 has 9 paths of 270V high-voltage load power output channels, the low-voltage power distribution module 6 has 4 paths of 28V low-voltage load power output channels, the single-channel maximum rated output current of the high-voltage power distribution module 5 and the low-voltage power distribution module 6 is 30A, external cross-linking interfaces 3 are mounted on external end surfaces of the chassis housing 1, which are far away from the high-voltage power distribution module 5 and the low-voltage power distribution module 6, the external cross-linking interfaces 3 adopt RS-422 and CAN buses to realize communication, the external cross-linking interfaces 3 have four paths, and are respectively: the high-voltage power distribution system comprises a 28V power input, a 28V channel output, a 270V power input and a 270V channel output, wherein a support plate 2 is connected between an external crosslinking interface 3 and a high-voltage power distribution module 5 and a low-voltage power distribution module 6 in a case shell 1, an interconnection motherboard 4 is arranged on the support plate 2, the high-voltage power distribution module 5 and the low-voltage power distribution module 6 are electrically connected with the interconnection motherboard 4, and the external crosslinking interface 3 is electrically connected with the interconnection motherboard 4.

The high-voltage distribution module 5 is provided with 9 paths of 270V high-voltage load power output channels, the low-voltage distribution module 6 is provided with 4 paths of 28V low-voltage load power output channels, the channels are mutually isolated by the interconnection mother board 4, the design that the channels are mutually independent and are intensively controlled is realized by utilizing a solid-state distribution technology, the concentrated distribution management and the independent protection functions of multiple paths of high-voltage and low-voltage loads are realized, the external crosslinking interface 3 is communicated with an upper computer through an RS-422 and a CAN bus, the power-on and power-off of corresponding loads and the working condition data acquisition are realized, the high-voltage distribution module 5, the low-voltage distribution module 6 and the external crosslinking interface 3 are isolated by the interconnection mother board 4, and the isolation is realized by adopting a photoelectric isolation technology.

The interconnection motherboard 4 includes an auxiliary power supply circuit, a signal processing logic control circuit, a power driving circuit, a power switching circuit, a short-circuit protection circuit, an RCD buffer circuit, a status acquisition circuit, and the like. The auxiliary power circuit converts an input 28VDC working power supply into 5V and 15V working power required by the working of each channel and the control circuit through the isolation type power module, isolates each channel, has the functions of anti-reflection and transient impact prevention, and prevents the false turn-off caused by power disturbance; the signal processing logic control circuit adopts an ARM architecture to carry out circuit design and is used for controlling the on/off of channels, carrying out programmable overcurrent inverse time limit protection on each channel, collecting the state of each channel, storing faults of the channels, and uploading data to an upper computer through a communication circuit; the power driving circuit isolates the control signal, so that the control part is isolated from the power part, and the totem pole circuit is used for driving after the isolation, so that the conduction loss is small, the efficiency is high, and the driving capability and the switching speed of the circuit are improved; the power switch circuit adopts a multi-tube parallel connection mode for a high-power load, so that the on-resistance is reduced, and the on-loss of the power switch is reduced; the short-circuit protection circuit is preset with a short-circuit threshold value, and the short-circuit protection circuit is compared and judged by the current detection circuit and outputs a signal for feedback, so that the control channel is turned off; the RCD buffer circuit is composed of a resistor-capacitor element and a switching diode, and is mainly used for preventing voltage and current spike interference caused by current non-uniformity due to the influence of self junction capacitance and other distribution parameters in the circuit when the power switch is turned on and turned off and the power switch is connected in parallel; the state acquisition circuit realizes the detection and output of the state mainly by judging the voltage of the key circuit point.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multichannel direct current solid-state power distribution device, includes quick-witted case casing (1), its characterized in that: the inside of machine case body (1) is provided with high-voltage distribution module (5) and low-voltage distribution module (6), machine case body (1) is kept away from in the outside terminal surface of high-voltage distribution module (5) and low-voltage distribution module (6) and installs outside cross-linking interface (3), the inside of machine case body (1) is connected with extension board (2) between outside cross-linking interface (3) and high-voltage distribution module (5) and low-voltage distribution module (6), install on extension board (2) and be provided with interconnection mother board (4), high-voltage distribution module (5) and low-voltage distribution module (6) all with interconnection mother board (4) electric connection, outside cross-linking interface (3) and interconnection mother board (4) electric connection.

2. A multi-channel dc solid state power distribution device as claimed in claim 1, wherein: the high-voltage distribution module (5) has 9 paths of 270V high-voltage load power output channels, and the low-voltage distribution module (6) has 4 paths of 28V low-voltage load power output channels.

3. A multi-channel dc solid state power distribution device as claimed in claim 2, wherein: the single-channel maximum rated output current of the high-voltage power distribution module (5) and the low-voltage power distribution module (6) is 30A.

4. A multi-channel dc solid state power distribution device as claimed in claim 1, wherein: the external crosslinking interface (3) adopts RS-422 and a CAN bus to realize communication.

5. A multi-channel dc solid state power distribution device as claimed in claim 1, wherein: the external crosslinking interfaces (3) are four, and are respectively: 28V power input, 28V channel output, 270V power input and 270V channel output.