Circuit breaker for electrical equipment and electrical system

Abstract

The embodiment of the utility model provides a circuit breaker for electrical equipment and an electrical system. The circuit breaker includes: a housing; the at least one first wire row is coupled to the power supply side of the circuit breaker; the at least one second wire row is coupled to the power utilization side of the circuit breaker, and insulated isolation is established between the second wire row and the first wire row; the circuit board is arranged between the at least one first wire row and the at least one second wire row and comprises an electrical element, two ends of the electrical element are respectively coupled to the first wire row and the second wire row so as to establish electrical connection between the first wire row and the second wire row, and the electrical element is suitable for acting during the abnormal period of the circuit so as to cut off the electrical connection between the first wire row and the second wire row; and the actuating mechanism is arranged between the first wire row and the power supply side of the circuit breaker and is suitable for disconnecting a line where the electrical equipment is located. The method includes. Therefore, the response speed of the circuit breaker can be improved, the generation of electric arcs during the breaking action of the action mechanism is reduced, the safety of a line can be improved, and the service life of the circuit breaker is prolonged.

Description

Technical Field

[0001] Example embodiments of the present disclosure relate generally to the field of electrical equipment, and more particularly to circuit breakers and electrical systems for electrical equipment. Background Art

[0002] As a protective device that can quickly and accurately cut off the current, the stability and accuracy of the circuit breaker plays a vital role in the power system. With the increasing complexity and diversity of power systems and electronic equipment, the types of electrical equipment and power consumption are also increasing, which also puts higher requirements on the performance of circuit breakers. Utility Model Content

[0003] In the first aspect of the present disclosure, a circuit breaker for an electrical device is provided. The circuit breaker includes: a housing; at least one first line bar, arranged in the housing and coupled to the power supply side of the circuit breaker; at least one second line bar, arranged in the housing, coupled to the power consumption side of the circuit breaker, and spaced apart from the first line bar by a predetermined distance to establish insulation isolation between the first line bar and the second line bar; a circuit board, arranged between at least one first line bar and at least one second line bar, and including: at least one electrical element, at least one electrical element, each of which has two ends coupled to the first line bar and the second line bar, respectively, to establish an electrical connection between the first line bar and the second line bar, and is suitable for actuating during an abnormality of the line to cut off the electrical connection between the first line bar and the second line bar; and an actuating mechanism, arranged between the first line bar and the power supply side of the circuit breaker, and suitable for moving from a closed position to a closed position after the electrical connection between the first line bar and the second line bar is cut off, so as to disconnect the line where the electrical device is located.

[0004] In some embodiments, the circuit breaker further includes: a panel coupled to the housing and adapted to at least partially shield the actuating mechanism, the first line bank, the second line bank, and the circuit board.

[0005] In some embodiments, the circuit breaker further comprises: an incoming line terminal arranged on the housing and adapted to pass through the housing and be coupled to an incoming line end of the actuating mechanism.

[0006] In some embodiments, the circuit breaker further includes: an outlet terminal arranged on the housing and adapted to pass through the housing and be coupled to the second line bar.

[0007] In some embodiments, the actuation mechanism further includes: an actuation handle, which is adapted to pass through the panel and is at least partially exposed on a side of the panel facing away from the housing.

[0008] In some embodiments, the circuit breaker further includes: a heat dissipation component coupled to at least one of the first line bar and the second line bar and adapted to dissipate heat from the electrical component via at least one of the first line bar and the second line bar.

[0009] In some embodiments, the heat dissipation assembly includes: a contact plate coupled to at least one of the first line array and the second line array; a heat pipe coupled to the contact plate and adapted to extend in a first direction; and a plurality of heat dissipation fins coupled to the heat pipe at intervals along the first direction.

[0010] In some embodiments, the electrical component includes a metal oxide semiconductor field effect transistor (MOSFET).

[0011] By arranging the first line row and the second line row at the two ends of the electrical component respectively, if an abnormality occurs in the circuit (for example, a short-circuit current appears in the circuit), the electrical component can cut off the connection between the first line row and the second line row. And after the abnormality of the circuit disappears (for example, the short-circuit current disappears due to the disconnection of the first line row and the second line row), the action mechanism can be controlled to perform a disconnection action to cut off the electrical connection between the first line row and the incoming terminal. Therefore, disconnecting the circuit by the electrical component can improve the response speed of the circuit breaker, and reduce the generation of arcs during the disconnection action of the action mechanism, which can improve the safety of the circuit and extend the service life of the circuit breaker. In addition, the two ends of the electrical component are respectively coupled to the first line row and the second line row, which is beneficial to the heat dissipation of the electrical component. Improve the stability of the circuit breaker for long-term and high-current operation.

[0012] In a second aspect of the present disclosure, an electrical system is provided, comprising: an electrical device; and the circuit breaker provided in the first aspect of the present disclosure, coupled to the electrical device.

[0013] It should be understood that the contents described in this content section are not intended to limit the key features or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0015] Figure 1 A schematic diagram showing an electrical system according to some embodiments of the present disclosure is shown;

[0016] Figure 2 shows an overall structural schematic diagram of a circuit breaker according to some embodiments of the present disclosure;

[0017] Figure 3 A schematic diagram showing the internal structure of a circuit breaker according to some embodiments of the present disclosure is shown; and

[0018] Figure 4Schematic diagrams of the internal structure of a circuit breaker from other perspectives according to some embodiments of the present disclosure are shown. DETAILED DESCRIPTION

[0019] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0020] It should be noted that the titles of any sections / subsections provided herein are not restrictive. Various embodiments are described throughout this article, and any type of embodiment may be included under any section / subsection. In addition, the embodiments described in any section / subsection may be combined in any manner with any other embodiments described in the same section / subsection and / or different sections / subsections.

[0021] In the description of the embodiments of the present disclosure, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may be included below. The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may be included below.

[0022] As briefly mentioned above, traditional circuit breakers control the on and off of circuits by swinging the action mechanism between the closing position and the opening position to drive the moving contact and the static contact. However, when traditional circuit breakers are used to disconnect high-current circuits, the disconnection speed is slow and arcs are easily generated, which brings safety hazards. In addition, the arc generated during disconnection will also affect the life of the circuit breaker.

[0023] In order to solve or at least partially solve the above-mentioned problems or other potential problems existing in the conventional technology, the embodiments of the present disclosure provide a circuit breaker and an electrical system for electrical equipment. By arranging the first line row and the second line row at the two ends of the electrical component respectively, if an abnormality occurs in the line (for example, a short-circuit current appears in the line), the electrical component can cut off the connection between the first line row and the second line row. And after the abnormality of the line disappears (for example, the short-circuit current disappears due to the disconnection of the first line row and the second line row), the action mechanism can also be controlled to perform a disconnection action to cut off the electrical connection between the first line row and the incoming line terminal. Thus, by disconnecting the line by the electrical component, the response speed of the circuit breaker can be improved, and the generation of arcs during the disconnection action of the action mechanism can be reduced, the safety of the line can be improved, and the service life of the circuit breaker can be extended. In addition, the two ends of the electrical component are respectively coupled to the first line row and the second line row, which is beneficial to the heat dissipation of the electrical component. Improve the stability of the circuit breaker for long-term and high-current operation.

[0024] Figure 1 Schematic diagram of an electrical system according to some embodiments of the present disclosure is shown. Figure 1 As shown, the electrical system 9 generally includes a circuit breaker 1 and an electrical device 8. The power supply side of the circuit breaker 1 is coupled to the power supply, and the power consumption side of the circuit breaker 1 is coupled to the electrical device 8, so that the circuit breaker 1 can protect the power safety of the electrical device 8 by controlling the on and off of the line between the electrical device 8 and the power supply.

[0025] Figure 2 shows an overall structural schematic diagram of a circuit breaker according to some embodiments of the present disclosure, Figure 3 and Figure 4 Schematic diagrams of the internal structure of a circuit breaker according to some embodiments of the present disclosure are shown respectively. Figures 2 to 4 As shown, the circuit breaker 1 includes a housing 2, at least one first line row 3 fixed on the housing 2, and at least one second line row 4 fixed on the housing 2 corresponding to the at least one first line row 3. A predetermined distance is spaced between each first line row 3 and the second line row 4 corresponding to the first line row 3, so that insulation isolation is established between the first line row 3 and the second line row 4. A circuit board 5 is also arranged between the first line row 3 and the second line row 4, and at least one electrical component 51 is coupled to the circuit board 5, and the number of electrical components 51 corresponds to the number of at least one first line row 3 and / or at least one second line row 4. Both ends of the electrical component 51 are respectively connected to the corresponding first line row 3 and the second line row 4. As a result, the first line row 3 and the second line row 4 can be connected or disconnected through the electrical component 51.

[0026] In some embodiments, an electrical parameter sensor and a micro control unit are also coupled to the circuit board. The electrical parameter sensor is suitable for detecting electrical signals in the circuit and sending these electrical signals to the micro control unit, and the micro control unit can determine the circuit state according to the electrical signals obtained by the electrical parameter sensor. If the micro control unit determines that an abnormality occurs in the circuit, such as a short circuit current occurs in the circuit, the micro control unit can control the electrical element 51 to work, thereby cutting off the electrical connection between the first line row 3 and the second line row 4.

[0027] In some embodiments, the electrical element 51 may include a metal oxide semiconductor field effect transistor (MOSFET), the source and drain of the metal oxide semiconductor field effect transistor are respectively coupled to the first line row 3 and the second line row 4, and the gate is coupled to the micro control unit. If the micro control unit determines that the power consumption is abnormal, the micro control unit sends a control signal (such as a high level signal) to the gate, thereby disconnecting the source and the drain (that is, cutting off the electrical connection between the first line row 3 and the second line row 4).

[0028] like Figure 3 and Figure 4 As shown, an action mechanism 6 is also fixed on the housing 2, and the action mechanism 6 is arranged between the first line row 3 and the power supply side of the circuit breaker 1. The action mechanism 6 includes an input end and an output end, the input end is coupled to the power supply side of the circuit breaker 1, and the output end is coupled to the first line row 3. If there is an abnormal power consumption in the line (for example, a short-circuit current appears in the line), the electrical element 51 will first act and cut off the electrical connection between the first line row 3 and the second line row 4, and then after the short-circuit current disappears, the action mechanism 6 will act (i.e., trip) and cut off the electrical connection between the first line row 3 and the power supply side of the circuit breaker 1. As a result, the action mechanism 6 can further improve the safety of the circuit breaker 1 disconnection and facilitate the operation and maintenance personnel to inspect the line and the circuit breaker 1. Since the abnormal current in the line has disappeared when the action mechanism 6 is tripped, the action of the circuit breaker 1 will not generate an arc, thereby improving the safety of the circuit breaker 1 and extending the service life of the circuit breaker 1.

[0029] In some embodiments, the action mechanism 6 further includes an action handle 61, which is suitable for driving the moving contact to move to contact or separate with the static contact. For example, the operation and maintenance personnel can use the action handle 61 to reset the circuit breaker 1 after the circuit breaker 1 is tripped.

[0030] In some embodiments, the power consumption side of the circuit breaker 1 may include an incoming line terminal 22, which is disposed on the housing 2 and is coupled to the incoming line end of the actuating mechanism 6 of the incoming line terminal 22. In some embodiments, the power supply side of the circuit breaker 1 may include a plurality of incoming line terminals 22, for example, the power supply side of the circuit breaker 1 may include four incoming line terminals 22, and the four incoming line terminals 22 correspond to three-phase live wires and one-phase neutral wire, respectively.

[0031] In some embodiments, the power consumption side of the circuit breaker 1 may include an outlet terminal 23, which is arranged on the housing 2 and is coupled to the second line row 4. Similar to the inlet terminal 22, the power consumption side of the circuit breaker 1 may also include multiple outlet terminals 23. For example, the power consumption side of the circuit breaker 1 may include four outlet terminals 23, which respectively correspond to the three-phase live inlet line and the one-phase neutral line of the power consumption equipment.

[0032] In some embodiments, the circuit breaker 1 may include three first wire rows 3 and three second wire rows 4. The three first wire rows 3 are arranged in sequence along the installation direction perpendicular to the extension direction, and a predetermined interval is left between two adjacent first wire rows 3 so that the three first wire rows 3 are kept insulated and isolated. The three first wire rows 3 are respectively coupled to the outlet ends of the action mechanism 6, so that the three first wire rows 3 can be respectively connected to the three-phase live wires of the line. The three second wire rows 4 are arranged at one end of the three first wire rows 3 along the extension direction, and the three second wire rows 4 are respectively aligned with the three first wire rows 3 in the extension direction. A predetermined interval is left between two adjacent second wire rows 4 in the three second wire rows 4 so that the three second wire rows 4 are kept insulated and isolated. The three second wire rows 4 are respectively coupled to three outlet terminals 23 to correspond to the three-phase live wires in the line (the incoming terminal 22 corresponding to the neutral line can be connected to the outlet terminal 23 via the action mechanism 6). The circuit board 5 mentioned above can be integrally coupled to the three first wire rows 3 and the three second wire rows 4. The circuit board 5 can also be divided into three independent parts and respectively coupled to the corresponding first line array 3 and second line array 4 .

[0033] Return to reference Figure 2 In some embodiments, the housing 2 further comprises a panel 21, which is coupled to the housing 2 and is adapted to at least partially shield the first line row 3, the second line row 4, the action mechanism 6 and the circuit board, thereby ensuring stable operation of the internal mechanism of the circuit breaker 1.

[0034] In some embodiments, the action handle 61 of the circuit breaker 1 is adapted to pass through the panel 21 and be at least partially exposed on a side of the panel 21 facing away from the housing 2 (ie, the side of the panel 21 facing the user), thereby facilitating the user to operate the action handle 61 .

[0035] In some embodiments, the circuit breaker 1 further includes a heat dissipation assembly 7, which includes a contact plate 71, a heat pipe 72 coupled to the contact plate 71, and a plurality of heat dissipation fins 73 coupled to the heat pipe 72. The contact plate 71 is coupled to at least one of the second line row 4 and the second line row 4. In some embodiments, the contact plate 71 housing 2 can be coupled to the first line row 3 and the second line row 4 at the same time, and the contact plate 71 and the first line row 3 and the second line row 4 are isolated by an isolation pad 74. The isolation pad 74 is an insulating heat-conducting material, so that the heat of the first line row 3 and the second line row 4 can be transferred to the isolation pad 74, while providing insulation protection for the first line row 3 and the second line row 4.

[0036] The heat pipe 72 is partially arranged inside the contact plate 71, and the portion of the heat pipe 72 arranged outside the contact plate 71 extends along the first direction. A plurality of heat dissipation fins 73 are coupled to the heat pipe 72 in parallel with each other along the first direction, and adjacent heat dissipation fins 73 are arranged at intervals. In this way, during the operation of the circuit breaker 1, the heat generated by the electrical component 51 can be conducted to the contact plate 71 through the first line row 3 and / or the second line row 4, and then conducted to the heat dissipation fins 73 through the heat pipe 72 for heat dissipation. As a result, the operating temperature of the circuit breaker 1 is reduced, the safety of the operation of the circuit breaker 1 is provided, and the service life of the circuit breaker 1 is extended.

[0037] The above descriptions of various implementations of the present disclosure are exemplary, non-exhaustive, and not limited to the disclosed implementations. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described implementations. The selection of terms used herein is intended to best explain the principles of the implementations, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the various implementations disclosed herein.

Claims

1. A circuit breaker for electrical equipment, characterized in that: include: Housing (2); At least one first line bar (3) is arranged in the housing (2) and coupled to the power supply side of the circuit breaker (1); At least one second wire bar (4) is arranged in the housing (2), coupled to the power consumption side of the circuit breaker (1), and is spaced apart from the first wire bar (3) by a predetermined distance to establish insulation isolation between the first wire bar (3) and the second wire bar (4); A circuit board (5) arranged between the at least one first line row (3) and the at least one second line row (4), and comprising: at least one electrical element (51), two ends of each electrical element (51) of the at least one electrical element (51) being respectively coupled to the first line row (3) and the second line row (4) to establish an electrical connection between the first line row (3) and the second line row (4), and being adapted to operate during an abnormality of the line to cut off the electrical connection between the first line row (3) and the second line row (4); as well as An actuating mechanism (6) is arranged between the first line bar (3) and the power supply side of the circuit breaker (1), and is adapted to move from a closed position to an open position after the electrical connection between the first line bar (3) and the second line bar (4) is cut off, so as to disconnect the line where the electrical device (8) is located.

2. The circuit breaker according to claim 1, characterized in that: Also includes: A panel (21) is coupled to the housing (2) and is suitable for at least partially shielding the actuating mechanism (6), the first line row (3), the second line row (4) and the circuit board (5).

3. The circuit breaker according to claim 1, characterized in that: Also includes: An incoming line terminal (22) is arranged on the housing (2) and is suitable for passing through the housing (2) to couple with an incoming line end of the actuating mechanism (6).

4. The circuit breaker according to claim 1, characterized in that: Also includes: An outlet terminal (23) is arranged on the housing (2) and is suitable for passing through the housing (2) to couple with the second line bar (4).

5. The circuit breaker according to claim 2, characterized in that: The action mechanism (6) further comprises: An action handle (61), wherein the action handle (61) is adapted to pass through the panel (21) and is at least partially exposed on a side of the panel (21) facing away from the housing (2).

6. The circuit breaker according to claim 1, characterized in that: Also includes: A heat dissipation component (7) is coupled to at least one of the first wiring row (3) and the second wiring row (4), and is suitable for dissipating heat from the electrical element (51) via at least one of the first wiring row (3) and the second wiring row (4).

7. The circuit breaker according to claim 6, characterized in that: The heat dissipation component (7) comprises: A contact plate (71) coupled to at least one of the first line row (3) and the second line row (4); a heat pipe (72), coupled to the contact plate (71) and adapted to extend in a first direction; and A plurality of heat dissipation fins (73) are coupled to the heat pipe (72) at intervals along the first direction.

8. The circuit breaker according to any one of claims 1 to 7, characterized in that: The electrical element (51) comprises a metal oxide semiconductor field effect transistor (MOSFET).

9. An electrical system, characterized in that: include: Electrical equipment (8); as well as The circuit breaker (1) according to any one of claims 1 to 8, coupled to the electrical device (8).

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