High-voltage DC module with control protection function

Abstract

The utility model provides a high-voltage direct current module with control protection function, which comprises a base, a shell, contactors, fuses and copper bars, the base is detachably connected with the shell, an accommodating space is formed between the shell and the base, the contactors, the fuses and the copper bars are arranged in the accommodating space, the base and the shell are fixed in a matched manner by using four hook-shaped buckles, and the shell is detachably connected with the base. The contactors, the fuses and the copper bars are limited through clamping grooves, the contactors and the fuses are fixed to the copper bars through screws, the outside of the module is connected with a main loop through the copper bars, and the locking screws are fixed. According to the modular installation structure, the contactor and the fuse are integrated, the size is smaller, and maintenance and replacement of the control protection module are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, and in particular to a high-voltage direct current module with control and protection functions. Background Art

[0002] Currently, the conventional structure of high-voltage DC control protection on the market is the use of contactors and fuses in combination.

[0003] A contactor is an automatic control device that uses a coil to generate a magnetic field to close the contacts to control the load.

[0004] A fuse is an overcurrent protector that uses the overcurrent in the circuit to generate heat to melt the fuse, thereby disconnecting the circuit to protect the circuit's electrical appliances.

[0005] When the high-voltage DC contactor is working, the internal contactor contacts are closed. When overcurrent appears in the main circuit, the fuse melts to protect the main circuit, and then the main contacts of the contactor are disconnected. Secondly, when overcurrent appears in the main circuit, the fuse cannot work normally, and the contactor can be forced to disconnect to protect the main circuit.

[0006] In the traditional way, the contactor and the fuse are separately arranged in the high-voltage box, which occupies a large volume and is troublesome to inspect and replace the contactor and the fuse. Summary of the invention

[0007] The utility model aims to provide a high-voltage DC module with control and protection functions, integrating a contactor and a fuse into an integral component, thereby solving the problem that in the traditional method, the contactor and the fuse are separately arranged, resulting in a large occupied volume and being troublesome to repair and replace.

[0008] The purpose of the utility model is achieved through the following technical scheme: a high-voltage direct current module with control and protection functions, comprising a base, a shell, a contactor, a fuse, an input copper bar, a connecting copper bar, and an output copper bar. The base and the shell are detachably connected, and a receiving space is formed between the shell and the base. The contactor, the fuse, and the copper bar are arranged in the receiving space.

[0009] Preferably, a first buckle body is provided on the base, and a buckle groove matching with the first buckle body is provided on the shell.

[0010] Preferably, a first limiting groove is provided on the base, and the contactor is arranged in the first limiting groove.

[0011] Preferably, a second limiting groove is provided on the base, and the fuse is arranged in the second limiting groove.

[0012] Preferably, the input copper bar and the fuse are fixed by a combination screw, and a third limiting groove is provided on the base for the input copper bar to pass through, and one end of the input copper bar passes through the third limiting groove.

[0013] Preferably, the base is provided with a fourth limiting groove for limiting the connecting copper bar, and the connecting copper bar is in an "L" shape; one end of the connecting copper bar is connected to the fuse, and the fuse and the connecting copper bar are fixed by a combination screw, and the other end of the connecting copper bar is connected to the contactor, and the connecting copper bar and the contactor are fixed by a combination screw.

[0014] Preferably, the output copper bar is in an "L" shape, one end of the output copper bar is fixed to the contactor by a combination screw, and the other end of the output copper bar passes through the fifth limiting slot.

[0015] Preferably, a connector port is provided on the outer side of the housing, and the connector port is used to supply power to the contactor coil drive, monitor auxiliary contacts or connect a voltage collection cable.

[0016] Preferably, a partition plate is provided in the middle of the base, and the second limiting groove and the first limiting groove are respectively located on both sides of the partition plate.

[0017] Preferably, the first buckle body is a hook-type buckle, and four first buckle bodies are provided on the base.

[0018] The beneficial effects of the utility model are:

[0019] 1. The modular installation structure of the utility model integrates the contactor and the fuse into one, which has a smaller volume and a compact structure, and reduces the occupancy of the internal volume of the high-voltage box.

[0020] 2. This module installation method facilitates the inspection and replacement of the high-voltage box circuit. When the high-voltage box is in overcurrent protection, it is only necessary to disconnect the input and output copper bars on the high-voltage DC module from the external circuit. Then the high-voltage DC module can be easily removed from the high-voltage box and the internal circuit components can be inspected without removing the entire high-voltage box from the circuit system, which facilitates the inspection and replacement of the circuit; and because a detachable connection is adopted between the shell and the base, the shell and the base can be easily disassembled; when the high-voltage DC module cannot be repaired, the entire high-voltage DC module can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is an exploded view of the utility model.

[0023] Figure 3 A schematic diagram of the structure of the circuit components.

[0024] Figure 4 A schematic diagram of the structure of the base.

[0025] Figure 5 A schematic diagram of the structure of the shell.

[0026] In the figure: 1. base, 2. shell, 3. output copper busbar, 4. input copper busbar, 5. combination screw, 6. connecting copper busbar, 7. contactor, 8. fuse, 9. first limiting slot, 10. second limiting slot, 11. third limiting slot, 12. fourth limiting slot, 13. fifth limiting slot, 14. first buckle body, 15. first buckle slot, 16. connector port. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0028] like Figures 1 to 5 As shown, a high voltage DC module with control and protection functions comprises a base 1, a housing 2, and circuit components. An accommodation space is formed between the housing 2 and the base 1, and the circuit components are arranged in the accommodation space.

[0029] The base 1 is detachably connected to the shell 2. A first buckle body 14 is provided on the base 1, and a buckle groove 15 matching the first buckle body 14 is provided on the shell 2. The shell 2 and the base 1 are connected through the first buckle body 14 and the buckle groove 15. When the two are connected, the first buckle body 14 on the base 1 is snapped into the buckle groove 15 on the shell 2. This buckle connection method greatly facilitates the connection and disassembly between the base 1 and the shell 2. The specific structure and number of the first buckle body 14 can be determined according to actual needs. In the present embodiment, the first buckle body 14 is a hook buckle, and four first buckle bodies 14 are provided on the base 1.

[0030] The circuit components include a fuse 8 and a contactor 7. The fuse 8 is connected to an input copper bar 4, which is used to connect to an external circuit. The input copper bar 4 is in an "I" shape. The input copper bar 4 and the fuse 8 are fixed by a combination screw 5. The base 1 is provided with a third limiting groove 11 through which the input copper bar 4 can pass. One end of the input copper bar 4 passes through the third limiting groove 11.

[0031] The base 1 and the housing 2 are provided with a second limiting groove 10 for placing the fuse 8. The second limiting groove 10 matches the shape of the fuse 8 and limits the freedom of the fuse 8 in the left and right front and back directions and the up and down directions.

[0032] The base 1 is provided with a fourth limiting groove 12 for limiting the connection copper bar 6. The connection copper bar 6 is in an "L" shape, and the connection copper bar 6 passes through the fourth limiting groove 12. One end of the connection copper bar 6 is connected to the fuse 8, and the fuse 8 and the connection copper bar 6 are fixed by a combination screw 5. The other end of the connection copper bar 6 is connected to the contactor 7, and the connection copper bar 6 and the contactor 7 are fixed by a combination screw 5.

[0033] The base 1 is provided with a first limiting groove 9 for placing the contactor 7. The first limiting groove 9 matches the shape of the contactor 7. The contactor 7 is placed in the first limiting groove 9 and the xyz direction degree of freedom and rotational degree of freedom of the contactor 7 are limited by the first limiting groove 9.

[0034] A fifth limiting groove 13 is provided on the base 1 and the shell 2 for the output copper bar 3 to pass through. The output copper bar 3 is used to connect to an external circuit, wherein the output copper bar 3 is in an "L" shape, one end of the output copper bar 3 and the contactor 7 are fixed by a combination screw 5, and the other end of the output copper bar 3 passes through the fifth limiting groove 13.

[0035] A connector port 16 is provided on the outer side of the housing 2, and the connector port 16 is used to supply power to the contactor coil drive, monitor auxiliary contacts, or connect a voltage collection cable.

[0036] A partition plate is provided in the middle of the base 1, and the second limiting groove 10 and the first limiting groove 9 are respectively located on both sides of the partition plate. The fuse 8 and the contactor 7 are separated by the partition plate to reduce the mutual influence between the fuse 8 and the contactor 7.

[0037] In the utility model, the input copper bar 4 is connected to the positive pole of the external circuit. The high-voltage DC module of the utility model is connected inside the high-voltage box, and is connected to the high-voltage box through the output copper bar 3 and the input copper bar 4; on the one hand, this high-voltage DC module integrates both the contactor and the fuse, has a smaller volume, a compact structure, and occupies less space, so that the volume of the entire high-voltage box is further reduced; on the other hand, this structure facilitates the maintenance and replacement of the high-voltage box. When the fuse is blown, it is only necessary to disconnect the input copper bar 4 and the output copper bar 3 on the high-voltage DC module from the external circuit, and then remove the high-voltage DC module from the high-voltage box for maintenance or replacement, without removing the entire high-voltage box from the circuit system, which facilitates the maintenance and replacement of the circuit.

[0038] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A high voltage DC module with control and protection functions, characterized in that: It includes a base, a shell, a contactor, a fuse, an input copper busbar, a connecting copper busbar, and an output copper busbar. The base and the shell are detachably connected, and a storage space is formed between the shell and the base. The contactor, the fuse, and the copper busbar are arranged in the storage space.

2. A high voltage DC module with control and protection functions according to claim 1, characterized in that: The base is provided with a first buckle body, and the shell is provided with a buckle groove matched with the first buckle body.

3. The high voltage DC module with control and protection function according to claim 1, characterized in that: The base is provided with a first limiting groove, and the contactor is arranged in the first limiting groove.

4. The high voltage DC module with control and protection function according to claim 1, characterized in that: The base is provided with a second limiting groove, and the fuse is arranged in the second limiting groove.

5. The high voltage DC module with control and protection function according to claim 1, characterized in that: The input copper bar and the fuse are fixed by a combination screw, and a third limiting groove is provided on the base for the input copper bar to pass through, and one end of the input copper bar passes through the third limiting groove.

6. The high voltage DC module with control and protection function according to claim 1, characterized in that: The base is provided with a fourth limiting groove for limiting the connecting copper bar, and the connecting copper bar is in an "L" shape; one end of the connecting copper bar is connected to the fuse, and the fuse and the connecting copper bar are fixed by a combination screw, and the other end of the connecting copper bar is connected to the contactor, and the connecting copper bar and the contactor are fixed by a combination screw.

7. The high voltage DC module with control and protection function according to claim 1, characterized in that: The output copper bar is in an "L" shape, one end of the output copper bar is fixed to the contactor by a combination screw, and the other end of the output copper bar passes through the fifth limiting slot.

8. The high voltage DC module with control and protection function according to claim 1, characterized in that: The outer side of the housing is provided with a connector port, which is used to power the contactor coil drive, monitor the auxiliary contacts or connect the voltage acquisition cable.

9. The high voltage DC module with control and protection function according to claim 1, characterized in that: A partition plate is arranged in the middle of the base, and the second limiting groove and the first limiting groove are respectively located on both sides of the partition plate.

10. The high voltage DC module with control and protection function according to claim 2, characterized in that: The first buckle body is a hook-shaped buckle, and four first buckle bodies are arranged on the base.

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