CN216056301U - Intelligent power distribution control device and intelligent power distribution box - Google Patents
Intelligent power distribution control device and intelligent power distribution box Download PDFInfo
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- CN216056301U CN216056301U CN202120842655.9U CN202120842655U CN216056301U CN 216056301 U CN216056301 U CN 216056301U CN 202120842655 U CN202120842655 U CN 202120842655U CN 216056301 U CN216056301 U CN 216056301U
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Abstract
The utility model belongs to the field of design of airplane power systems, and discloses an intelligent power distribution control device and an intelligent power distribution box. The control device is adaptable to loads of different powers, the control device comprising: the contactor 2, the universal control unit 3 and the chip selection unit 4; a plurality of output ends of the chip selection unit 4 are correspondingly connected with a plurality of input ends of the universal control unit 3; the output end of the generalized control unit 3 is connected with the control end of the contactor, and the main contact output end of the contactor is connected with a load with any power. The intelligent contactor control unit is used for solving the problems that the airplane one-time power distribution intelligent contactor control units in the prior art are more in types, the module hardware state management is complex, the outfield interchangeability is poor, and the maintainability is poor.
Description
Technical Field
The utility model belongs to the field of design of airplane power systems, and particularly relates to an intelligent power distribution control device and an intelligent power distribution box.
Background
In an aircraft alternating current power supply system, alternating current electric energy output by an alternating current generator is transmitted to an alternating current distribution box through a power bus bar in an aircraft power grid to serve as a primary power distribution center of an aircraft, the alternating current distribution box is responsible for distributing three-phase alternating current electric energy to various high-power loads and power supply conversion devices, a main device in the alternating current distribution box is an intelligent contactor, the overcurrent and short-circuit protection characteristics of the intelligent contactor need to be matched and coordinated with a protected electric load and an alternating current generator controller, tripping protection can be carried out when the protected electric load or a power supply line of the protected electric load is in overcurrent and short-circuit faults, a fault part is isolated from the aircraft power grid, and the normal work of the alternating current generator and other electric loads is ensured. The intelligent contactor control unit has different specifications of 25A, 35A, 75A, 100A, 150A and the like for loads with different power sizes.
Fig. 1 is a schematic diagram of a typical distribution line for an ac electrical load of a prior art aircraft. In the figure, an alternating current main bus bar 1 is connected with a load 4 through a 25A intelligent contactor control unit 3, a 35A intelligent contactor control unit 5 is connected with a load 6, and a 75A intelligent contactor control unit 7 is connected with a load 8.
The intelligent contactor comprises contactors, control units and mutual inductor coils, different load specifications need to be matched with the control units of different specifications, and therefore each contactor needs to be matched with a specific control unit according to the load, because control unit software is uniform and complete, the control units need to be distinguished on a hardware circuit, the hardware specifications of the control units are multiple, design, manufacture and use are not convenient, and the intelligent contactor control units do not have interchangeability and universality, for example, 6 contactors exist in a certain alternating current distribution box, 6 control units of different specifications need to be installed to respectively control and protect different contactors, and the control units in the alternating current distribution box are multiple in types.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an intelligent power distribution control device and an intelligent power distribution box, which are used for solving the problems of more types of control units, complex module hardware state management, poor outfield interchangeability and poor maintainability of a primary power distribution intelligent contactor of an airplane in the prior art.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme.
The first technical scheme is as follows:
an intelligent power distribution control device, the control device adaptable to loads of different powers, the control device comprising: the contactor 2, the universal control unit 3 and the chip selection unit 4;
a plurality of output ends of the chip selection unit 4 are correspondingly connected with a plurality of input ends of the universal control unit 3;
the output end of the generalized control unit 3 is connected with the control end of the contactor, and the main contact output end of the contactor is connected with a load with any power.
The first technical scheme of the utility model has the characteristics and further improvements that:
(1) and determining a protection curve output by the universal control unit through a selection signal output by the chip selection unit, wherein the protection curve is used for performing overcurrent protection on a load with corresponding power.
(2) The chip selection unit comprises a plurality of groups of switch circuits, each group of switch circuits selects the group of switch circuits to be connected with a power supply or a ground of the universal control unit through the closing or opening of the switch, the power supply of a certain group of switch circuits indicates that the output of the group of switch circuits is 1, and the ground of the certain group of switch circuits indicates that the output of the group of switch circuits is 0.
(3) And the main contact input end of the contactor is connected with an external bus bar.
(4) The switches in each group of switch circuits are single-pole double-throw switches.
The second technical scheme is as follows:
an intelligent distribution box comprises a bus bar, a plurality of intelligent distribution control devices and a plurality of load branches, wherein the intelligent distribution control devices are in one-to-one correspondence with the load branches;
the output end of a main contact of a contactor in each intelligent distribution control device is connected with a load branch, the load on the load branch is a load with any power, and the input end of the main contact of the contactor is connected with a bus bar.
The utility model provides a universal intelligent contactor control unit chip selection circuit designer and a control unit matching problem, which brings great convenience to the use, maintenance and fault location of a user.
Drawings
FIG. 1 is a schematic diagram of a typical prior art aircraft smart contactor power distribution;
fig. 2 is a schematic structural diagram of an intelligent ac distribution box provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a chip select circuit according to the present invention;
FIG. 4 is a schematic flow chart of the control logic of the intelligent distribution box of the present invention;
the system comprises a 1-alternating current main bus bar, a 2-contactor, a 3-universal control unit, a 4-chip selection circuit and loads 5, 6 and 7.
Detailed Description
The utility model provides the following technical scheme: fig. 1 is that traditional intelligent contactor contains contactor, mutual-inductor coil, the control unit triplex (the control unit specification is different), and the intelligent contactor that this scheme provided contains contactor, mutual-inductor coil, general control unit, the four bibliographic categories circuit bibliographic categories and divides the constitution, sees fig. 2.
The embodiment of the utility model provides an intelligent power distribution control device, which can adapt to loads with different powers, and comprises: the contactor 2, the universal control unit 3 and the chip selection unit 4;
a plurality of output ends of the chip selection unit 4 are correspondingly connected with a plurality of input ends of the universal control unit 3;
the output end of the generalized control unit 3 is connected with the control end of the contactor, and the main contact output end of the contactor is connected with a load with any power.
(1) And determining a protection curve output by the universal control unit through a selection signal output by the chip selection unit, wherein the protection curve is used for performing overcurrent protection on a load with corresponding power.
(2) The chip selection unit comprises a plurality of groups of switch circuits, each group of switch circuits selects the group of switch circuits to be connected with a power supply or a ground of the universal control unit through the closing or opening of the switch, the power supply of a certain group of switch circuits indicates that the output of the group of switch circuits is 1, and the ground of the certain group of switch circuits indicates that the output of the group of switch circuits is 0.
(3) And the main contact input end of the contactor is connected with an external bus bar.
(4) The switches in each group of switch circuits are single-pole double-throw switches.
The embodiment of the utility model also provides an intelligent distribution box, which comprises a bus bar, a plurality of intelligent distribution control devices and a plurality of load branches, wherein the intelligent distribution control devices adopt the first technical scheme;
the output end of a main contact of a contactor in each intelligent distribution control device is connected with a load branch, the load on the load branch is a load with any power, and the input end of the main contact of the contactor is connected with a bus bar.
The load matching can be realized by simply arranging the chip selection circuit for loads with different power sizes, the control unit with a relatively complex circuit can be designed in a universal mode, and the control unit can be used for all the loads with different power sizes and can be exchanged without distinguishing specification sizes.
As shown in fig. 3, the chip select circuit sets three-bit analog quantity outputs as required, and the three-bit analog quantity outputs are connected with a main chip peripheral circuit of the universal control unit, and after being processed by a chip I/O interface, the three-bit analog quantity outputs have 8 different arrangement combinations, namely 000, 001, 010, 011, 100, 101, 110 and 111, and respectively correspond to load power magnitudes of 8 different specifications, and the control unit software judges which set of software code is executed by reading the three-bit digital quantity signal.
The utility model is described in further detail below with reference to a preferred embodiment.
Please refer to fig. 3, which is a schematic diagram illustrating a chip select circuit according to the present invention. The inside of the control unit is provided with a printed circuit board, three 1K omega resistors are selected according to requirements and are connected with the control unit through a connector, VCC and a power ground are provided by the control unit, other three pinholes are connected with VCC through resistors and are set to be 1, and the connection power ground is set to be 0, so that 8 groups of different three-digit binary numbers can be generated, and control unit software judges which group of codes should be executed for overcurrent protection by identifying the group of binary numbers.
Fig. 4 is a flow chart of a control logic of the intelligent distribution box according to the embodiment of the present invention.
The utility model provides a universal intelligent contactor control unit chip selection circuit designer and a control unit matching problem, which brings great convenience to the use, maintenance and fault location of a user.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. An intelligent power distribution control device, wherein the control device is adaptable to loads of different powers, the control device comprising: the device comprises a contactor (2), a universal control unit (3) and a chip selection unit (4);
a plurality of output ends of the chip selection unit (4) are correspondingly connected with a plurality of input ends of the universal control unit (3);
the output end of the universal control unit (3) is connected with the control end of the contactor, and the main contact output end of the contactor is connected with a load with any power.
2. The intelligent power distribution control device as claimed in claim 1, wherein a protection curve output by the universal control unit is determined by the selection signal output by the chip selection unit, and the protection curve is used for performing over-current protection on a load with corresponding power.
3. The intelligent power distribution control device according to claim 1, wherein the chip selection unit comprises a plurality of groups of switch circuits, each group of switch circuits selects the group of switch circuits to connect the power supply or the ground of the universal control unit through the closing or opening of the switch, the connection of a certain group of switch circuits to the power supply indicates that the output of the group of switch circuits is 1, and the connection of a certain group of switch circuits to the ground indicates that the output of the group of switch circuits is 0.
4. The intelligent power distribution control device of claim 1 wherein the main contact input of the contactor is connected to an external bus bar.
5. The intelligent power distribution control device of claim 3 wherein the switches in each set of switching circuits are single pole double throw switches.
6. An intelligent distribution box, characterized in that the intelligent distribution box comprises a bus bar, a plurality of intelligent distribution control devices according to any one of claims 1-4, and a plurality of load branches, wherein the plurality of load branches correspond to the plurality of intelligent distribution control devices one by one;
the output end of a main contact of a contactor in each intelligent distribution control device is connected with a load branch, the load on the load branch is a load with any power, and the input end of the main contact of the contactor is connected with a bus bar.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202120842655.9U CN216056301U (en) | 2021-04-22 | 2021-04-22 | Intelligent power distribution control device and intelligent power distribution box |
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CN202120842655.9U CN216056301U (en) | 2021-04-22 | 2021-04-22 | Intelligent power distribution control device and intelligent power distribution box |
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CN216056301U true CN216056301U (en) | 2022-03-15 |
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CN202120842655.9U Expired - Fee Related CN216056301U (en) | 2021-04-22 | 2021-04-22 | Intelligent power distribution control device and intelligent power distribution box |
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2021
- 2021-04-22 CN CN202120842655.9U patent/CN216056301U/en not_active Expired - Fee Related
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Granted publication date: 20220315 |