Intelligent control module and circuit breaker built into molded case circuit breaker

Abstract

The present invention relates to an intelligent control module and circuit breaker built into a molded case circuit breaker, comprising a module base, a module bracket, and a circuit board assembly. The module bracket is mounted on the upper portion of the module base, and the circuit board assembly is mounted within the module bracket. The module base is provided with multiple independent cavities, each of which houses a transformer assembly. The transformer assembly and the circuit board assembly are connected via a connector. The module base is a flat, elongated shell-like structure, and the module bracket is a flat, elongated shell-like structure that matches the module base. The bottom of the module bracket is provided with a mounting hole for passing a connector, and the inner side of the module bracket is provided with a guide mounting groove for fixedly mounting the circuit board assembly. This module can meet the needs of molded case circuit breakers with a 63A frame rating, which have relatively limited space, and implement a built-in intelligent trip control function module.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an intelligent control module built into a molded case circuit breaker and a circuit breaker. Background Art

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. Circuit breakers are used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. They automatically disconnect circuits in the event of severe overloads, short circuits, or undervoltage faults. Their functionality is equivalent to a combination of a fuse-type switch and an over- and under-temperature relay, and interrupting fault current generally requires no component changes.

[0003] The 63A frame molded case circuit breaker has a compact structure and small space. Currently, there is no 63A frame product with a built-in intelligent trip control function module on the market, and the current intelligent control module is difficult to install in the 63A frame.

[0004] Patent CN 102347175 B discloses an electronic trip unit for a molded case circuit breaker, comprising a housing, a busbar, a transformer, an armature, a yoke, a draw rod, and a magnetic flux converter. The busbar passes through a through hole of the transformer and a through hole of the armature, and the armature is connected to the housing via a tension spring. The yoke is located on the busbar and is opposite to the armature. The draw rod is rotatably connected to the housing and is provided with a first protrusion and a second protrusion. The first protrusion contacts the magnetic flux converter, and the second protrusion contacts the armature. However, this mechanism is difficult to meet the installation requirements of a 63A frame molded case circuit breaker. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent control module built into a molded case circuit breaker and a circuit breaker in order to solve the above problems.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] An intelligent control module built into a molded case circuit breaker includes a module base, a module bracket, and a circuit board assembly. The module bracket is mounted on the upper portion of the module base, and the circuit board assembly is mounted within the module bracket. The module base is provided with a plurality of independent cavities, each of which houses a transformer assembly. The transformer assembly is connected to the circuit board assembly via a connector. The module base is a flat, elongated shell-like structure, and the module bracket is a flat, elongated shell-like structure that matches the module base. The bottom of the module bracket is provided with a mounting hole for passing a connector, and the inner side of the module bracket is provided with a guide mounting groove for fixedly mounting the circuit board assembly.

[0008] Furthermore, the module base includes a module bottom plate, a first side plate and a second side plate integrally arranged on the module bottom plate along the length direction of the module base, and a plurality of partitions are arranged parallel and spaced between the first side plate and the second side plate to form multiple independent cavities.

[0009] Furthermore, the first side panel is provided with a plurality of U-shaped slots, the upper portion of the U-shaped slots is provided with a rectangular notch, the plurality of U-shaped slots are arranged in a line and at equal intervals, the U-shaped slots are provided with wiring terminals, and the wiring heads of the wiring terminals are located at the rectangular notch in the upper portion of the U-shaped slots.

[0010] Furthermore, the second side panel is provided with a plurality of rectangular slots, which are arranged in a line and at equal intervals. The sides of the rectangular slots are provided with flange edges protruding from the second side panel. The wiring terminals are installed on the rectangular slots, and the wiring heads of the wiring terminals are located at the bottom of the rectangular slots.

[0011] Furthermore, the module base is provided with a third side plate with a rectangular hole at the end between the first side plate and the second side plate.

[0012] Furthermore, the module bracket includes an upper side frame, a flange side panel is provided on one side outside the upper side frame, and several groups of positioning clips are provided on the other side outside the upper side frame. When the module bracket is installed on the module base, the flange side panel is located at the upper edge of the first side panel, and the positioning clip is snapped onto the edge of the flange panel to achieve reliable assembly of the module bracket and the module base.

[0013] Furthermore, the guide installation groove is arranged inside the upper side frame, and the circuit board assembly is provided with an opening matching the guide installation groove.

[0014] Furthermore, a plurality of operating buttons are provided on the upper portion of the circuit board assembly.

[0015] Furthermore, a module top cover is provided on the upper portion of the module bracket, and the module top cover encapsulates the circuit board assembly in the module bracket.

[0016] Furthermore, the module base of the intelligent control module is installed in the circuit breaker body base of the molded case circuit breaker. After the module bracket is installed, the circuit breaker body middle cover is installed, the circuit board assembly and the module top cover are installed in the module bracket, and the module top cover is fixed to the circuit breaker body middle cover with screws.

[0017] Compared with the prior art, the intelligent control module of the present invention has a compact structure and a small size. This is because the present invention has redesigned the structure and assembly method of the module base, module bracket and circuit board assembly: the module base of the present invention is a flat and long shell structure, and the module bracket is a flat and long shell structure matching the module base. The bottom of the module bracket is provided with a mounting hole for passing the connector, and the inner side of the module bracket is provided with a guide mounting groove for fixedly installing the circuit board assembly. This structure allows the module bracket and the module base to be seamlessly connected, and can be made relatively narrow in the width direction, while ensuring the realization of the function of the intelligent control module, thereby meeting the needs of the 63A frame-level molded case circuit breaker with relatively limited space, and realizing a built-in intelligent tripping control function module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 、 2 This is a structural diagram of an existing 63A frame molded case circuit breaker;

[0019] Figure 3 、 4 This is a schematic structural diagram of an intelligent control module according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic structural diagram of a module base according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic structural diagram of a module bracket according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the assembly structure of the module base and the module bracket according to an embodiment of the present invention;

[0023] Figure 8 This is a dimensional diagram of the intelligent control module according to an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the installation process of the intelligent control module according to an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the assembled intelligent control module according to an embodiment of the present invention (without the module cover);

[0026] Figure 11 This is a schematic diagram of an assembled intelligent control module according to an embodiment of the present invention;

[0027] Figure 12 This is a schematic diagram of an intelligent control module installed on a circuit breaker body according to an embodiment of the present invention;

[0028] In the figure: module base 100, module bracket 200, circuit board assembly 300, transformer assembly 400, module top cover 500, circuit breaker body middle cover 600, circuit breaker body base 700. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example

[0031] like Figure 1 、 2 , which is a structural diagram of an existing 63A frame molded case circuit breaker. The rear thickness of the circuit breaker arc extinguishing module is 24mm, and the thickness of the upper middle cover opening is 22mm. Due to the small size of the 63A frame circuit breaker, the space available for accommodating the intelligent trip control module is relatively small, making it difficult to design and install the intelligent control module. The present invention is mainly intended to accommodate the intelligent trip control component in the 63A frame molded case circuit breaker.

[0032] like Figure 3 、 4 , an intelligent control module built into a molded case circuit breaker, including a module base 100, a module bracket 200 and a circuit board assembly 300, the module bracket 200 is installed on the upper part of the module base 100, the circuit board assembly 300 is installed in the module bracket 200, three or four independent cavities are provided in the module base 100, a transformer assembly 400 is installed in the cavity, the transformer assembly 400 is connected to the circuit board assembly 300 through a connector, the module base 100 is a flat and long shell structure, the module bracket 200 is a flat and long shell structure matching the module base 100, the bottom of the module bracket 200 is provided with a mounting hole 202 for passing the connector, the inner side of the module bracket 200 is provided with a guide mounting groove 203 for fixedly installing the circuit board assembly 300, and a plurality of operation buttons are provided on the upper part of the circuit board assembly 300.

[0033] Specifically, if Figure 5The module base 100 includes a module base plate 101, a first side plate 102, and a second side plate 103 integrally mounted on the module base plate 101 along the length of the module base 100. A plurality of partitions 104 are spaced parallel to and spaced apart from the first side plate 102 and the second side plate 103, forming multiple independent cavities. The first side plate 102 has multiple U-shaped slots 107, each with a rectangular notch above it. The multiple U-shaped slots 107 are arranged in a straight line at equal intervals. Terminal blocks 109 are mounted on the U-shaped slots 107, with their connectors located in the rectangular notch above the U-shaped slots 107. The second side panel 103 has multiple rectangular slots 105 arranged in a straight line at equal intervals. The sides of the rectangular slots 105 are provided with flanges 106 that protrude from the second side panel 103. Terminal blocks 109 are mounted on the rectangular slots 105, with the terminals 109 located at the bottom of the slots. A third side panel 108 with a rectangular hole is provided at the end of the module base 100 between the first and second side panels 102, 103.

[0034] like Figure 6 The module bracket 200 includes an upper side frame 201, a flange side plate 204 is provided on one side of the upper side frame 201, and a plurality of positioning card plates 205 are provided on the other side of the upper side frame 201. When the module bracket 200 is installed on the module base 100, Figure 7 The flange side plate 204 is located at the upper edge of the first side plate 102, and the positioning card plate 205 is snapped onto the flange plate edge 106 to achieve reliable assembly of the module bracket 200 and the module base 100. The guide installation groove 203 is set inside the upper side frame 201, and the circuit board assembly 300 is provided with an opening that matches the guide installation groove 203. Figure 9 A module top cover 500 is further provided on the upper portion of the module bracket 200 , and the module top cover 500 encapsulates the circuit board assembly 300 in the module bracket 200 .

[0035] like Figure 8 Through the above assembly method, the intelligent control module can be made into a smaller module with a compact structure and small size. The external dimensions are 103 (78) × 23.7 × 68.5, and can be installed in a 63A frame molded case circuit breaker with a module of 25mm, thereby realizing a built-in intelligent tripping control function module in the 63A frame molded case circuit breaker.

[0036] like Figure 10 、 1112. When assembling the intelligent module, the intelligent module base 100 is installed in the circuit breaker body base 700, and then the four / three sets of transformer assemblies 400 are installed in the cavity of the module base 100. The transformer assembly 400 mainly detects and collects information from the circuit breaker main circuit and outputs it to the circuit board assembly 300. The module base 100 has four or three independent cavities, which are mainly used to accommodate the transformer assembly 400 and also serve as phase insulation. Then the module bracket 200 is installed on the module base 100. The bottom surface of the module bracket 200 has holes for passing the connectors of the transformer assembly. The side of the module bracket 200 has grooves for fixing the circuit board assembly 300. After the module bracket 200 is installed, the circuit breaker body middle cover 600 is installed. Finally, the circuit board assembly 300 and the module top cover 500 are installed in the module bracket 200 and the module top cover 500 is fixed to the circuit breaker body middle cover 600 with screws to complete the installation.

[0037] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. An intelligent control module built into a molded case circuit breaker, comprising a module base (100), a module bracket (200) and a circuit board assembly (300), wherein the module bracket (200) is mounted on the upper portion of the module base (100), the circuit board assembly (300) is mounted in the module bracket (200), a plurality of independent cavities are provided in the module base (100), a mutual inductor assembly (400) is mounted in the cavity, and the mutual inductor assembly (400) is connected to the circuit board assembly (300) via a connector, characterized in that: The module base (100) is a flat and long shell-like structure, the module bracket (200) is a flat and long shell-like structure matching the module base (100), the bottom of the module bracket (200) is provided with a mounting hole (202) for passing a connector, the inner side of the module bracket (200) is provided with a guide mounting groove (203) for fixedly mounting the circuit board assembly (300), and the bottom of the circuit board assembly (300) is provided with a connecting plate that is compatible with the guide mounting groove (203); The module base (100) comprises a module bottom plate (101), a first side plate (102) and a second side plate (103) integrally provided on the module bottom plate (101) along the length direction of the module base (100), and a plurality of partition plates (104) are provided in parallel and spaced apart between the first side plate (102) and the second side plate (103) to form a plurality of independent cavities; The module base (100) is provided with a third side plate (108) with a rectangular hole at the end between the first side plate (102) and the second side plate (103).

2. The intelligent control module built into a molded case circuit breaker according to claim 1, characterized in that: The first side plate (102) is provided with a plurality of U-shaped slots (107), the upper portion of the U-shaped slots (107) being provided with a rectangular notch, the plurality of U-shaped slots (107) being arranged in a line at equal intervals, the U-shaped slots (107) being provided with connection terminals (109), the connection heads of the connection terminals (109) being located at the rectangular notch at the upper portion of the U-shaped slots (107).

3. The intelligent control module built into a molded case circuit breaker according to claim 2, characterized in that: The second side plate (103) is provided with a plurality of rectangular slots (105), which are arranged in a line and at equal intervals. The sides of the rectangular slots (105) are provided with flange edges (106) protruding from the second side plate (103). The rectangular slots (105) are provided with connection terminals (109), and the connection terminals (109) are located at the bottom of the rectangular slots (105).

4. The intelligent control module built into a molded case circuit breaker according to claim 3, characterized in that: The module bracket (200) includes an upper side frame (201), a flange side panel (204) is provided on one side of the outer side of the upper side frame (201), and a plurality of positioning card panels (205) are provided on the other side of the outer side of the upper side frame (201). When the module bracket (200) is installed on the module base (100), the flange side panel (204) is located on the upper edge of the first side panel (102), and the positioning card panels (205) are snapped onto the flange panel edge (106), thereby realizing reliable assembly of the module bracket (200) and the module base (100).

5. The intelligent control module built into a molded case circuit breaker according to claim 4, characterized in that: The guide installation groove (203) is arranged inside the upper side frame (201), and the circuit board assembly (300) is provided with an opening matching the guide installation groove (203).

6. The intelligent control module built into a molded case circuit breaker according to claim 1, characterized in that: A plurality of operating buttons are provided on the upper portion of the circuit board assembly (300), and a module top cover (500) is also provided on the upper portion of the module bracket (200). The module top cover (500) encapsulates the circuit board assembly (300) within the module bracket (200).

7. The intelligent control module built into a molded case circuit breaker according to claim 6, characterized in that: The module base (100) of the intelligent control module is installed in the circuit breaker body base (700) of the molded case circuit breaker. After the module bracket (200) is installed, the circuit breaker body middle cover (600) is installed, the circuit board assembly (300) and the module top cover (500) are installed in the module bracket (200), and the module top cover (500) is fixed to the circuit breaker body middle cover (600) with screws.

8. A circuit breaker equipped with the intelligent control module according to any one of claims 1 to 7.

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