EA040971B1 - POWER DISTRIBUTION CONTROL DEVICE - Google Patents

Description

Field of invention

The present invention relates to a device for controlling power distribution and ensuring safety in this process, in particular, the present invention relates to a removable cell for a motor control board, which is safe for operators.

Prerequisites for the creation of the invention

The engine control board is a node consisting of one or more separate sections, while the node contains engine control units that have one common power bus for engines. It is designed to centralize control and power distribution to motors.

Modern motor control panels have multiple motor starters and may contain functional modules such as variable frequency drive, programmable controllers and instrumentation. Motor starters can operate motors and provide circuit protection. The engine control unit can be either an integrated camera or a removable cell. Removable cell simplifies maintenance, diagnostics and modifications. The removable cell mainly comes into contact with the busbar for electrical connection, power distribution and motor control. The removable cell includes a mechanism for attaching the control unit to the bus within the removable cell, the mechanism being a clamping device, a pin device or a locking device. In the conventional mechanism, devices for connecting a control unit to a bus are complex, and the devices are attempted to be reliable, easy to maintain, and inexpensive.

KR 20100091042 discloses a motor control board designed to improve usability and stability by engaging or disengaging a clamping device without pulling the block device out of the housing, the housing containing a power converter and a load converter. The block is stored in the housing and manages the connection between the power side and the load side, and the block contains a power terminal and a load terminal. The clamp block performs a reciprocating motion in the block storage or removal direction, and the clamp block connects the power converter and the power terminal, and the load converter and the load terminal.

EP 3123565 A1 discloses a pin connection for connecting a first contact to a second contact, comprising a first contact finger containing a first surface and a second contact finger containing a second surface, the second surface facing the first surface. The pin connection accommodates a first contact between the first end for supplying power to the first surface and the second end for supplying power to the second surface, and also accommodates a second contact between the first end for receiving the load of the first surface and the second end for receiving the load of the second surface, while the first contact finger and the second contact finger connects the first contact to the second contact, and the pin connection is characterized in that the distance between the first surface and the second surface is smaller in the intermediate section between the first power supply end and the first load receiving end than at the first power supply end and the first end to receive the load.

US 4,781,627 discloses a bus stabilizer and electrical drive insulator assembly that comprises a two-piece shroud and a three-piece stabilizer pin clip, the shroud base having a plurality of baffles that define the stabilizer pin passages, and the shroud cover being articulated with sliding base and has a tongue to accommodate a self-tapping screw. The stabilizer pins extend from the casing to make contact with the busbar and the stabilizer pin clamp accommodates two copper alloy pins, the interlocking pins being fastened together by a screw that also connects one or more interconnecting cables to the clamp.

However, no prior art device solves the problem of alignment of contact devices during installation or during replacement, as well as contact repulsion under short circuit conditions, which are also reliable and easy to maintain and safe for operators.

Brief description of the invention

The present invention is intended to provide a device for controlling power distribution and ensuring safety in this process, the device can solve the problem of contact device alignment and contact repulsion under short circuit conditions.

The purpose of the present invention is to provide a power distribution control device comprising an input unit for receiving power from a bus contact, a control unit connected to the input unit for power management, and an output unit for distributing power to a load.

Another object of the present invention is to provide a power distribution control device comprising an input unit for receiving power from a bus contact, the unit

- 1 040971 control unit connected to the input unit for power management and the output unit for distributing power to the load through the output terminal, while the specified input unit contains at least the first contact configured to be connected to at least the first contact device connected to the bus contact, and the specified output block contains at least a second contact configured to connect with at least a second contact device connected to the output terminal for distributing power to the load, while the input block contains a spring mechanism connected to the bus contact, and the specified first contact device - as a connecting jumper between the bus contact and the specified first contact, and the specified first contact is placed in the receiving end of the specified first contact device, which is in the closed position, while the receiving end is made with the possibility of opening to accommodate specified of the first contact of the bus under the effect of an expansion force while compressing the opposite end attached to the contact of the bus due to the reaction force, which ensures that a higher contact pressure is applied to the bus contact so that said first contact is self-aligned with said first contact device, output unit contains the specified second contact device with a spring mechanism located between the connection of the specified second contact device with the specified second contact and the connection of the specified second contact device with the output terminal, and the specified second contact device is configured to align at least the second contact due to the connection with the specified second contact device connected to the output terminal for distributing power to the load, the first contact (16) is a connecting pin containing a section with a polygonal cross section having a rectangular the first contact device (17) is made with the possibility of accommodating and clamping the specified first contact, while the first contact device (17) is made in such a way that it contains a part of the flat surface for engagement with the contact (12) of the tire and the first contact (16), and at the same time, the flat surface of the said first contact device (17) on the tire contact (12) is larger than the flat surface of the said contact (16) to prevent welding of the contacts on the tire contact (12) during an electrical short circuit.

The present invention can solve the problem of contact device alignment during installation or replacement, and prevent contact repulsion under short circuit conditions while maintaining reliability, ease of maintenance, and safety for operators.

Brief description of accompanying graphics

To further explain various aspects of some embodiments of the present invention, a more detailed description will be provided by reference to images in the accompanying drawings. It should be understood that these drawings only represent exemplary embodiments of the present invention and, therefore, should not be construed as limiting. The present invention will be described and explained with additional features and details by means of accompanying drawings in which:

in fig. 1 is a plan view of a power distribution control device according to the present invention;

in fig. 2 is a perspective view of a portion of a power distribution control device illustrating at least a bus contact, at least a first contact device, at least a first contact, at least a second contact device, at least a second contact. and an output terminal according to the present invention;

in fig. 3 shows a power distribution control device showing at least a bus contact, at least a first contact device, and at least a first contact according to the present invention;

in fig. 4a shows a portion of a power distribution control device showing a bus contact and a coated first contact device according to the present invention;

in fig. 4b shows a portion of a power distribution control device showing a bus contact and a first contact device according to the present invention;

in fig. 5a shows an input block according to the present invention;

in fig. 5b shows the first contact device connected to the first contact according to the present invention;

in fig. 5c shows the first contact according to the present invention;

in fig. 5d shows a cross-sectional view of a first contact device connected to a bus contact according to the present invention;

in fig. 5e shows a cross-sectional view of the first contact device connected to the first contact according to the present invention;

in fig. 6a shows an input block according to the present invention;

- 2 040971 in Fig. 6b shows a first contact device connected to a first contact according to the present invention;

in fig. 6c shows the first contact according to the present invention;

in fig. 6d shows a cross-sectional view of the first contact according to the present invention;

in fig. 6e shows a first contact device according to the present invention;

in fig. 6f shows a cross-sectional view of a first contact device connected to a bus contact according to the present invention;

in fig. 6g shows a cross-sectional view of the first contact device connected to the first contact according to the present invention;

in fig. 7a shows an output unit according to the present invention;

in fig. 7b shows a power distribution control device showing at least a second contact device, at least a second contact, and an output terminal according to the present invention;

in fig. 8a shows an output unit according to the present invention;

in fig. 8b shows a power distribution control device showing at least a second contact device, at least a second contact, and an output terminal according to the present invention;

in fig. 9a shows an output terminal according to the present invention;

in fig. 9b shows an output terminal block according to the present invention;

in fig. 9c shows an output terminal block according to the present invention.

Detailed description of the invention

Further reference will be made in detail to the preferred embodiments of the present invention, and their results are illustrated in the accompanying drawings.

Let us turn to Fig. 1 and 2, the figures illustrate, respectively, a plan view of a power distribution control device and a perspective view of a portion of a power distribution control device according to the present invention.

In a preferred embodiment of the present invention, as shown in FIG. 1 and 2, the power distribution control device comprises an input block (11) for receiving power from the bus contact (12), a control block (13) connected to the input block (11) for power management and an output block (14) for distribution of power to the load through the output terminal (15). In a preferred embodiment of the present invention, said input block (11) contains at least a first contact (16) for connection with at least a first contact device (17) connected to a bus contact (12), and said block ( 14) of the output contains at least a second contact (18) for connection with at least a second contact device (19) connected to the output terminal (15).

Let us turn to Fig. 3, the figure shows part of a plan view showing the bus contact (12), the first contact (16) and the first contact device (17).

In a preferred embodiment of the present invention, the power distribution control device is characterized in that said first contact device (17) is configured to align said first contact (16) by connecting to said first contact device (17). As shown in FIG. 2, said second contact device (19) is configured to align said second contact (18) by being connected to said second contact device (19). In a preferred embodiment of the present invention, said at least first contact device (17) and said at least second contact device (19) are configured to prevent contact repulsion, and said first contact device (17) is configured to prevent welding contacts on the contact (12) of the bar.

The device for controlling power distribution is preferably, but not limited to, a removable cell inside the removable panel of the motor control panel, while said first contact (16) and said second contact (18), preferably, but without limitation, are connecting pins.

Let us turn to Fig. 4a and 4b, the figures show respectively a part of the power distribution control device showing a bus contact (12) and a coated first contact device (17), and a part of the power distribution control device showing a bus contact (12) and a first contact device. (17) according to the present invention.

The material or casing covering the first contact device (17) is designed to hold the first contact device (17) in place due to the fastening property, which contributes to easier installation and replacement of the first contact device (17). A protective shield (51) is also provided, whereby preferably the IP2X coating is configured to help align the first contact device (17) in the connection position with the protective shield (51) during the replacement process.

- 3 040971

Let us turn to Fig. 5a, the figure shows a top view of the input block (11) according to the present invention, while the input block (11) is designed to receive power from the contact (12) of the bus, and it contains at least the first contact (16) for connection, with at least the first contact device (17) and a spring mechanism (22) attached to the contact (12) of the tire. In a preferred embodiment of the present invention, said first contact device (17) is configured to align said first contact (16) by being connected to said first contact device (17) and configured to prevent contact breakage. In this preferred embodiment, said first contact (16) is preferably, but not limited to, a connecting pin containing a polygonal cross-sectional area having a rectangular surface area.

The specified first contact device (17) contains a mechanism for accommodating and clamping the contact (12) of the tire at one end of the specified first contact device (17), as well as for accommodating and clamping the specified first contact (16) at the other end of the specified first contact device (17 ). The mechanism ensures that the specified first contact device (17) performs the function of a connecting jumper between the contact (12) of the bus and the specified first contact (16), and, in the case when the specified first contact (16) fits into the receiving end of the specified first contact device (17) , which is in the closed position, an expansion force is applied to the receiving end to open the receiving end to accommodate said first contact (16). Due to the effect of the expansion force, the opposite end attached to the contact (12) of the tire is compressed due to the reaction force, which ensures that a higher contact pressure is applied to the contact (12) of the tire. In a preferred embodiment, the mechanism provides self-alignment of said first contact (16) with said first contact device (17) with high connection accuracy and stability, which increases current flow and prevents contact repulsion under short circuit conditions. In addition, the specified first contact device (17) contains a spring mechanism (22) located between the connection of the specified first contact device (17) with the contact (12) of the tire and the connection of the specified first contact device (17) with the specified first contact (16), to ensure connection stability.

Let us turn to Fig. 5b, the figure shows a perspective view of the first contact device (17) connected to the first contact (16) according to the present invention. It is shown that said first contact device (17) accommodates and clamps said first contact (16). Said first contact device (17) is designed in such a way that it contains a part of a flat surface on both sides of the contact for engagement with the tire contact (12) and the first contact (16), as shown in FIG. 5a, wherein the flat surface of said first contact device (17) on the tire contact (12) is larger than the flat surface of said contact (16) to prevent welding of the contacts on the bus contact (12) during an electrical short circuit. In the arrangement of the present invention, due to the fact that during a short circuit there is a weak point on the contact, less temperature rise will be observed on a larger area of the contact surface on the contact (12) of the bus, compared to the contact surface on the said first contact (16).

Let us turn to Fig. 5c, the figure shows a perspective view of the first contact (16) according to the present invention, and it is shown that said first contact (16) is made in the form of a connecting pin containing a polygonal cross-sectional area having a rectangular surface area.

Let us turn to Fig. 5d and 5e, the figures show a cross-sectional view of the first contact device (17) connected to the bus contact (12) and connected to the first contact (16), respectively, according to the present invention. The figures show that the contact surface of said first contact device (17) connected to the tire contact (12) is larger than the contact surface of said first contact device (17) connected to said first contact (16).

Let us turn to Fig. 6a, the figure shows a top view of the input block (11) of another preferred embodiment according to the present invention, while the input block (11) is designed to receive power from the contact (12) of the bus. In a preferred embodiment of the present invention, said input block (11) contains at least a first contact (16) for connection with at least a first contact device (17) and a spring mechanism (22) attached to the contact (12) tires.

In a preferred embodiment of the present invention, said first contact device (17) is configured to align said first contact (16) by being connected to said first contact device (17) and configured to prevent contact breakage. In this preferred embodiment, said first contact (16) is preferably, but not limited to, a connecting pin containing a polygonal cross-sectional area having a hexagonal surface area.

The specified first contact device (17) contains a mechanism for accommodating and clamping the contact (12) of the tire at one end of the specified first contact device (17), as well as for accommodating

- 4 040971 and clamping said first contact (16) at the other end of said first contact device (17). The mechanism ensures that the specified first contact device (17) performs the function of a connecting jumper between the contact (12) of the bus and the specified first contact (16), and, in the case when the specified first contact (16) fits into the receiving end of the specified first contact device (17) , which is in the closed position, an expansion force is applied to the receiving end to open the receiving end to accommodate said first contact (16). Due to the effect of the expansion force, the opposite end attached to the contact (12) of the tire is compressed due to the reaction force, which ensures that a higher contact pressure is applied to the contact (12) of the tire. In a preferred embodiment, the mechanism provides self-alignment of said first contact (16) with said first contact device (17) with high connection accuracy and stability, which increases current flow and prevents contact repulsion under short circuit conditions. In addition, the said first contact device (17) contains a spring mechanism (22) located between the connection of the said first contact device (17) with the tire contact (12) and the connection of the said first contact device (17) with the said first contact (16) for ensuring stability and maintaining the accuracy of the connection.

Let us turn to Fig. 6b, the figure shows a perspective view of the first contact device (17) connected to the first contact (16) according to the present invention. It is shown that said first contact device (17) accommodates and clamps said first contact (16). The specified first contact device (17) is made in such a way that it contains at least two parts of a flat surface for engagement with the contact (12) of the tire, the specified first contact device (17) is made in such a way that it contains at least four parts of a flat surfaces to engage with the first contact (16) as shown in FIG. 6a, wherein the two flat surfaces of said first contact device (17) on the busbar contact (12) are larger than the flat surface of said contact (16) to prevent welding of the contacts on the busbar contact (12) during an electrical short circuit. Due to the fact that during a short circuit there is a weak point on the contact, less temperature rise will be observed on a larger contact surface area on the contact (12) of the bus, compared to the contact surface area on said first contact (16).

Let us turn to Fig. 6c, the figure shows a perspective view of a first contact (16) according to the present invention, wherein said first contact (16) is shown in the form of a connecting pin comprising a polygonal cross-sectional area having a hexagonal surface area.

Let us turn to Fig. 6d, the figure shows a cross-sectional view of the first contact (16) according to the present invention, and it is shown that said first contact (16) is made in the form of a connecting pin containing a polygonal cross-sectional area having a hexagonal surface area.

Let us turn to Fig. 6e, the figure shows a perspective view of the first contact device (17) according to the present invention, having four interlocking pins for clamping.

Let us turn to Fig. 6f and 6g, the figures show a cross-sectional view of the first contact device (17) connected to the bus contact (12) and connected to the first contact (16), respectively, according to the present invention. The figures show that the contact surface of said first contact device (17) connected to the tire contact (12) is larger than the contact surface of said first contact device (17) connected to said first contact (16). In FIG. 6g shows that four interconnected fingers of said first contact device (17) are configured to provide an effective clamping on said first contact (16) having a hexagonal surface area.

Let us turn to Fig. 7a and 7b, the figures show a second contact device (19) having a two-layer protrusion that is bent and ends at the output terminal block (15).

In a preferred embodiment of the present invention, said second contact device (19) comprises a mechanism for receiving and clamping said second contact (18) at one end of said second contact device (19) and at the other end of said second contact device (19), wherein said the second contact device (19) contains a two-layer protrusion, which is bent and ends at the specified output terminal (15). In addition, said second contact device (19) is equipped with a spring mechanism (23) located between the connection of said second contact device (19) with said second contact (18) and the connection of said second contact device (19) with output terminal (15) for ensuring stability and maintaining the accuracy of the connection. Essentially said second contact device (19) is configured to align said second contact (18) by connecting to said second contact device (19).

Let us turn to Fig. 8a and 8b, the figures show the second contact device (19) in another pre

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Claims (1)

respectful embodiment, having a single-layer protrusion that is bent and ends at the output terminal block (15). In a preferred embodiment of the present invention, said second contact device (19) comprises a mechanism for receiving and clamping said second contact (18) at one end of said second contact device (19) and at the other end of said second contact device (19), wherein said the second contact device (19) contains a single-layer protrusion, which is bent and ends at the specified output terminal (15). In addition, said second contact device (19) is equipped with a spring mechanism (23) located between the connection of said second contact device (19) with said second contact (18) and the connection of said second contact device (19) with output terminal (15) for ensuring stability and maintaining the accuracy of the connection. Essentially said second contact device (19) is configured to align said second contact (18) by connecting to said second contact device (19). It should be noted that said second contact device (19) in the described embodiment is configured to accommodate various polygonal cross-sectional areas having either a rectangular or a hexagonal surface area. Let us turn to Fig. 9a, 9b and 9c, the figures show an output terminal block according to the present invention. In FIG. 9a shows that the terminal block is equipped with a breakable barrier (31) which has an insert between the chambers to increase the current carrying capacity. In FIG. 9b shows the terminal block fitted with a breakable barrier (31) with the insert between the chambers removed. In FIG. 3 shows that the terminal block is equipped with phase barriers (33) that can be added or removed. The figures also show that a cable clamp (32) is present, which may have varying dimensions of the cable clamp (32). In the preferred embodiment of the present invention, the terminal block is universal for all nominal operating modes in the range from 0.2 to 630 A, while the terminal block can accommodate output external power cables from 2.5 to no more than 240 mm by changing different sizes of cable clamps and copper inserts. The present invention may be embodied in other specific forms without departing from its essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. Therefore, the scope of the present invention is defined by the appended claims and not by the above description. All changes to the meaning and range of equivalence of the claims are to be within the scope of the claims. CLAIM 1. A device for managing power distribution, comprising: block (11) input for receiving power from the contact (12) of the bus; a control unit (13) connected to the input unit (11) for power management; and an output unit (14) for distributing power to the load via an output terminal (15); wherein said input block (11) contains at least the first contact (16) configured to be connected to at least the first contact device (17) connected to bus contact (12), and said block (14 ) the output contains at least a second contact (18) configured to be connected to at least a second contact device (19) connected to the output terminal (15); characterized in that the input unit (11) contains a spring mechanism (22) connected to the contact (12) of the bus, and the specified first contact device (17) - as a connecting jumper between the contact (12) of the bus and the specified first contact (16) , and the specified first contact (16) is placed in the receiving end of the specified first contact device (17), which is in the closed position, while the receiving end is made with the possibility of opening to accommodate the specified first contact (12) of the tire under the influence of an expansion force with simultaneous compression of the opposite end attached to the contact (12) of the tire, due to the counterforce, which ensures that contact pressure is applied to the contact (12) of the tire so that self-alignment of the specified first contact (16) with the specified first contact device (17), block (14 ) output contains the specified second contact device (19) with a spring mechanism (23) located between the connection of the specified second con clock device (19) with the specified second contact (18) and the connection of the specified second contact device (19) with the output terminal (15), and the specified second contact device (19) is configured to align the specified second contact (18) by connecting to the specified second contact device (19), the first contact (16) is a connecting pin containing a section with a polygonal cross section having a rectangular surface area, while the first contact device (17) is configured to accommodate and clamp the specified first contact, -