High-density load channel integrated power distribution device

Abstract

The invention discloses a high-density load channel integrated power distribution device, which comprises a contactor, a plurality of groups of circuit breakers, an upper computer and an electric load connected with the circuit breakers, and is characterized in that the contactor is connected with a power supply, and the output end of the contactor is connected with a bus bar with a plurality of power distribution channels; the input ends of the plurality of groups of circuit breakers are correspondingly connected with the power distribution channels on the bus bar one by one, and the plurality of groups of circuit breakers are utilized to realize one-to-one independent power distribution of different electricity loads; the system integrates control, power distribution, protection and state monitoring functions, the integrated modular design can reduce the size of power distribution equipment and improve the space utilization rate, the circuit breaker is adopted as a power distribution protection device, the power distribution requirements of multiple paths of independent power loads are met, power distribution state monitoring is achieved in cooperation with the upper computer, and the power distribution efficiency is improved. And the on-board power distribution is more concentrated and is easy to manage and maintain.

Description

Technical Field

[0001] This invention relates to the field of power distribution system technology, specifically to a high-density load channel integrated power distribution device. Background Technology

[0002] Currently, the aviation industry still uses conventional power distribution systems, whose main control components are relays, circuit breakers, and contactors. While these components have simple working mechanisms, they suffer from relatively large size and weight, resulting in bulky power distribution equipment that cannot meet the power distribution needs of multiple electrical loads. In order to continue using mature conventional power distribution technology while also meeting the needs of onboard electrification and full electrification, conventional power distribution technology continues to develop, leading to the proposal of a high-density load channel integrated power distribution device. Summary of the Invention

[0003] The purpose of this invention is to provide a high-density load channel integrated power distribution device to solve the problem mentioned in the background art that the power distribution equipment is large in size and cannot meet the power distribution needs of multiple power loads.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-density load channel integrated power distribution device, comprising a contactor, several sets of circuit breakers, a host computer, and electrical loads connected to the circuit breakers. The contactor is connected to a power supply, and its output terminal is connected to a busbar with multiple power distribution channels. The input terminals of the several sets of circuit breakers are connected one-to-one with the power distribution channels on the busbar. The several sets of circuit breakers are used to achieve independent power distribution to different electrical loads. The main contacts of the circuit breakers are turned on or off to realize the connection or disconnection of the electrical loads. The auxiliary contacts of the circuit breakers are used to collect feedback circuit breaker status signals, and the host computer is used to monitor the working status of the corresponding circuit breakers in real time.

[0005] Furthermore, the power supply adopts a 28V low-voltage DC power supply.

[0006] Furthermore, the contactor is a low-voltage DC contactor, which is used as the input control for the power supply. The main contacts of the contactor connect or disconnect the power supply, and the working status of the contactor is fed back by collecting the status of the auxiliary contacts.

[0007] The beneficial effects of this invention are as follows: This invention integrates control, power distribution, protection, and status monitoring functions. The contactor, busbar, and circuit breaker are integrated into a modular design, which can reduce the size of the power distribution equipment and improve space utilization. Furthermore, by using circuit breakers as power distribution protection devices, it can meet the power distribution needs of multiple independent power loads and realize the acquisition and uploading of the on / off status of each power distribution channel to cooperate with the host computer to realize power distribution status monitoring. This makes the on-board power distribution more centralized, easier to manage and maintain, and is conducive to the promotion and use of this power distribution equipment. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the present invention.

[0009] In the diagram: 1. Power supply; 2. Contactor; 3. Busbar; 4. Circuit breaker; 5. Host computer. Detailed Implementation

[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0011] Please see Figure 1 This invention provides a technical solution: a high-density load channel integrated power distribution device, including a contactor 2, several sets of circuit breakers 4, a host computer 5, and electrical loads connected to the circuit breakers 4. The contactor 2 is connected to a power supply 1, and its output terminal is connected to a busbar 3 with multiple power distribution channels. The input terminals of the several sets of circuit breakers 4 are connected one-to-one with the power distribution channels on the busbar 3. The several sets of circuit breakers 4 are used to achieve independent power distribution to different electrical loads. The main contacts of the circuit breakers 4 are turned on or off to turn on or off the electrical loads. The status signals of the circuit breakers 4 are collected and fed back by the auxiliary contacts of the circuit breakers 4, and the working status of the corresponding circuit breakers 4 is monitored in real time by the host computer 5. The power supply 1 adopts a 28V low-voltage DC power supply. The contactor 2 adopts a low-voltage DC contactor, which is used as the input control of the power supply 1. The main contacts of the contactor 2 are turned on or off by the power supply 1, and the working status of the contactor 2 is fed back by collecting the status of the auxiliary contacts of the contactor 2.

[0012] This high-density load channel integrated power distribution device selects a low-voltage DC contactor 2 as the 28V power input control device, and uses a circuit breaker 4 with built-in auxiliary contacts to meet the power distribution needs of different specifications of electrical loads, and simultaneously realizes the status detection and uploading of circuit breaker 4. Among them, the contactor 2 controls its coil to realize the connection or disconnection of the main contacts of the contactor 2, and the working status of the contactor 2 is fed back by collecting the status of the auxiliary contacts of the contactor 2. The circuit breaker 4, as an independent power distribution protection device for each circuit, realizes the connection or disconnection of the power distribution of the electrical load by connecting or disconnecting the main contacts of the circuit breaker 4, and the current working status of the circuit breaker 4 is fed back by collecting the status of the auxiliary contacts of the circuit breaker 4.

[0013] The busbar 3 mentioned above is equipped with multiple power distribution channels for modular integrated structure design. While meeting the insulation spacing requirements, the installation spacing between several sets of circuit breakers 4 is reduced as much as possible to compress the space volume of the power distribution equipment chassis. Based on the mechanical environment requirements of the power distribution equipment, a three-dimensional model of the integrated high-density load channel power distribution equipment is established, and the equipment chassis of the integrated high-density load channel power distribution equipment is designed accordingly.

[0014] This high-density load channel integrated power distribution device uses a low-voltage DC contactor 2. The contactor receives an external control signal (28V / open, 28V effective) and connects the external 28V low-voltage DC power supply to the internal busbar 3. Different contactors 2 and busbars 3 can be designed as needed. Different circuit breakers 4 (circuit breakers 1, 2, ... n) then provide independent power distribution to different loads. When an overcurrent or short circuit occurs in a load channel, the circuit breaker 4 trips according to the device's inverse delay protection time curve, opening the power distribution channel for protection. Simultaneously, the status signal of circuit breaker 4 (ground / open signal), where ground indicates circuit breaker 4 has tripped, is uploaded to the host computer 5 for load power distribution status monitoring. The fault protection can be manually reset after the overcurrent fault disappears. For the same power supply 1, multiple load power distribution channels can be modularly integrated. The design must consider the installation and operation distances of the devices and meet electrical insulation requirements in humid and hot environments. The structural principle of the host computer 5 is a well-known technology and will not be elaborated upon here.

[0015] In summary, this invention can facilitate the development of fully electrified aircraft and the management of power distribution centers, making onboard power distribution more centralized, easier to manage and maintain; by using circuit breaker 4 as a power distribution protection device, it can meet the power distribution needs of multiple independent power loads, and realize the collection and uploading of the on / off status of each power distribution channel to cooperate with the host computer 5 to realize power distribution status monitoring.

[0016] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0017] The above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be understood that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. In the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a mechanical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Among these, there are various ways of detachable installation, such as by using a combination of plug-in and snap-fit, or by using bolt connections, etc.

[0018] Although embodiments of the invention 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 to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-density load channel integrated power distribution device, characterized in that: The system includes contactors, several sets of circuit breakers, a host computer, and electrical loads connected to the circuit breakers. The contactors are connected to a power supply, and their output terminals are connected to a busbar with multiple power distribution channels. The input terminals of the several sets of circuit breakers are connected one-to-one with the power distribution channels on the busbar. The system uses several sets of circuit breakers to achieve independent power distribution to different electrical loads. The main contacts of the circuit breakers are turned on or off to connect or disconnect the electrical loads. The system collects feedback status signals from the auxiliary contacts of the circuit breakers and uses the host computer to monitor the working status of the corresponding circuit breakers in real time.

2. The high-density load channel integrated power distribution device according to claim 1, characterized in that: The power supply uses a 28V low-voltage DC power supply.

3. The high-density load channel integrated power distribution device according to claim 1, characterized in that: The contactor is a low-voltage DC contactor, which is used as the input control for power supply. The main contacts of the contactor connect or disconnect the power supply, and the working status of the contactor is fed back by collecting the status of the auxiliary contacts.

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