Circuit breaker and power device

Abstract

The present application provides a circuit breaker and a power device. The circuit breaker comprises a housing, an operating handle, an operating mechanism, a current conducting assembly, and an arc extinguishing chamber. The operating handle, the operating mechanism, the current conducting assembly, and the arc extinguishing chamber are sequentially arranged in the depth direction of the circuit breaker. The current conducting assembly comprises a moving contact assembly and a static contact. The operating mechanism is connected to the moving contact assembly. The operating handle is used for controlling the operating mechanism to drive the moving contact assembly to move, so that a moving contact is in contact with or separated from the static contact. The arc extinguishing chamber is used for eliminating an electric arc generated when the moving contact is separated from the static contact. The moving contact assembly comprises a gas-generating connecting rod and the moving contact which are relatively fixed. The gas-generating connecting rod is provided with a blocking plate, used for covering an opening between the operating mechanism and the arc extinguishing chamber. During the separation of the moving contact and the static contact, the blocking plate can always separate the operating mechanism from the arc extinguishing chamber, thereby preventing the operating mechanism from being electrified due to the electric arc generated when the moving contact is separated from the static contact being ejected onto the operating mechanism, and thus improving the safety of the circuit breaker.

Description

Circuit breaker and power equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 29, 2023, with application number 202311867693.X and application name “A circuit breaker and power equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of communication equipment, and in particular to a circuit breaker and power equipment. Background Art

[0004] As technologies like artificial intelligence (AI), 5.5G, and autonomous driving are increasingly integrated into our daily lives and work, the demand for computing power is increasing significantly. Data centers, as a key area supporting this computing power, require ultra-high capacity and high density. Uninterruptible power supplies (UPS), an indispensable core unit in modern data centers, are being further miniaturized in response to the trend toward increased capacity and higher density.

[0005] In data center power supply and distribution systems, circuit breakers are often required to distribute electrical energy. As key components in power supply and distribution systems, circuit breakers not only control the on and off of circuits but also provide certain protective functions. Specifically, a mechanical switch can be incorporated into the circuit breaker, allowing operators to operate the switch to switch the circuit breaker between closed and open states, thereby connecting or disconnecting the circuit. Furthermore, when a fault such as an overload or short circuit occurs, the circuit breaker can automatically switch to the open state to disconnect the current, thereby fulfilling its protective function.

[0006] For data centers, as the size and power consumption of power conversion modules continue to decrease, current levels are also increasing. However, the limited internal space of existing cabinets has led to significant limitations on the layout and number of circuit breakers, making it impossible to meet the higher operating current requirements.

[0007] Summary of the Invention

[0008] The present application provides a circuit breaker and an electric power device to adjust the overall size of the circuit breaker to change the space occupied by the circuit breaker in a cabinet, thereby increasing the number of circuit breakers that can be arranged in the cabinet and improving the safety of the circuit breaker.

[0009] In a first aspect, the present application provides an electric power device. The electric power device includes a cabinet, multiple circuit breakers, and multiple power modules. The aforementioned multiple power modules are arranged in the cabinet, and the aforementioned multiple circuit breakers are arranged in sequence in the cabinet along the width direction of the cabinet, wherein the height direction of the circuit breaker is in the same direction as the width direction of the cabinet, the width direction of the circuit breaker is in the same direction as the height direction of the cabinet, and the depth direction of the circuit breaker is in the same direction as the depth direction of the cabinet. Specifically, the circuit breaker includes a housing, an operating handle, an operating mechanism, a current flow assembly, and an arc extinguishing chamber. The operating handle is connected to the operating mechanism. The current flow assembly includes a moving contact assembly and a static contact. At least the portion of the operating handle close to the operating mechanism, the operating mechanism, the moving contact assembly, and the arc extinguishing chamber are arranged in sequence in the housing along the depth direction of the circuit breaker. A partition is provided in the housing, the partition is located between the operating mechanism and the arc extinguishing chamber and extends in the height direction of the circuit breaker, the partition is used to separate the operating mechanism and the arc extinguishing chamber, and the partition is provided with an opening. The moving contact assembly is rotatable relative to the housing. The moving contact assembly specifically includes a moving contact and a gas-producing connecting rod, wherein the moving contact and the gas-producing connecting rod are relatively fixed. The gas-producing connecting rod is used to form a gas blow toward the arc extinguishing chamber. The end of the gas-producing connecting rod close to the operating mechanism is rotatably connected to the housing, and the end of the gas-producing connecting rod away from the operating mechanism is provided with a baffle, which is located on the side of the opening close to the operating mechanism. The static contact is located on the side of the moving contact assembly away from the operating mechanism along the depth direction of the circuit breaker. The operating mechanism is connected to the moving contact assembly, and the operating handle is used to control the operating mechanism to drive the gas-producing connecting rod of the moving contact assembly to rotate relative to the housing, so that the moving contact and the static contact are in contact or separation. The baffle is used to always cover the opening during the process of the operating mechanism driving the gas-producing connecting rod to rotate relative to the housing. The arc extinguishing chamber is used to eliminate the arc generated when the moving contact and the static contact are separated.

[0010] The above-mentioned circuit breaker has a circuit breaker operating surface for staff to perform closing and opening operations, check the working status of the circuit breaker, and other operations. In the plane where the circuit breaker operating surface is located, the dimension of the circuit breaker along the direction in which the operating handle is pushed is the height, and the dimension of the circuit breaker perpendicular to the height is the width. The dimension of the circuit breaker along the direction perpendicular to the circuit breaker operating surface is the depth. The circuit breaker of the present application can be applied to a power supply and distribution system, and the circuit breaker can be specifically installed in a cabinet. Similarly, the cabinet has a user operating surface for staff to perform control operations, installation and removal, or maintenance operations. The circuit breaker operating surface of the circuit breaker faces the same direction as the user operating surface. Taking the state where the cabinet is placed on the ground as an example, in the plane where the user operating surface is located, the dimension of the cabinet parallel to the ground is the width, and the dimension of the cabinet perpendicular to the ground is the height. The dimension of the cabinet perpendicular to the user operating surface is the depth. When multiple circuit breakers are installed in a cabinet, these circuit breakers are placed in parallel along the width direction of the cabinet, wherein the circuit breaker operation surface of the circuit breaker and the user operation surface of the cabinet face the same direction, and the height direction of each circuit breaker is in the same direction as the width direction of the cabinet, the width direction of each circuit breaker is in the same direction as the height direction of the cabinet, and the depth direction of each circuit breaker is in the same direction as the depth direction of the cabinet, that is, each circuit breaker is placed horizontally in the cabinet.

[0011] In the power equipment of the present application, the part of the operating handle of the circuit breaker close to the operating mechanism, the operating mechanism, the moving contact, the arc extinguishing chamber and the arc extinguishing module are arranged along the depth direction of the circuit breaker. It can be understood that this part of the operating handle, the operating mechanism, the moving contact assembly, the arc extinguishing chamber and the arc extinguishing module are arranged in a layered manner along the depth direction of the circuit breaker. This can reduce the layout of the components of the circuit breaker along the height direction, thereby reducing the height dimension of the circuit breaker, and then reducing the occupied space of the circuit breaker to increase the number of circuit breakers that can be arranged in the cabinet. Among them, the circuit breaker includes a first layer (electrical operation or manual operation layer), a second layer (operation layer), a third layer (current flow layer), a fourth layer (arc extinguishing layer) and a fifth layer (arc extinguishing layer). When the circuit breaker is specifically set up, the operating handle is located on the first layer, the operating mechanism is located on the second layer, the current flow assembly is located on the third layer, the arc extinguishing chamber is located on the fourth layer, and the arc extinguishing module is located on the fifth layer. Among them, the moving contact of the moving contact assembly can extend along the depth direction of the circuit breaker, so that the size of the moving contact assembly in the height direction of the circuit breaker is reduced, which can further facilitate the minimization of the circuit breaker in the height direction. Furthermore, while achieving miniaturization, the movable contact assembly also allows for a larger driving force arm for closing the movable and stationary contacts, thereby reducing the driving force of the operating mechanism and improving operational stability. Furthermore, the movable contact extends toward the arc extinguishing chamber, while the stationary contact is located on the side of the movable contact away from the operating mechanism along the depth of the circuit breaker. As a result, during contact or disconnection between the movable and stationary contacts, the movable contact's travel is along the height of the circuit breaker without affecting the movement of the operating mechanism, facilitating electrical disconnection of the movable contact assembly.

[0012] In addition, in the power equipment of the present application, a large amount of gas is produced after the gas-producing material is eroded by the electric arc, resulting in an increase in the pressure at the position where the gas-producing material is eroded, thereby forming a pressure difference between the position and the surrounding environment, and then forming an airflow flowing from the position to the low-pressure environment, and the flowing airflow is called air blowing. Among them, the gas-producing material includes but is not limited to composite composite materials, ceramic materials or other new materials. In the fourth layer (arc extinguishing layer), when the moving contact is separated from the static contact, an arc is generated between the moving contact and the static contact, and the gas-producing connecting rod made of the gas-producing material produces a large amount of gas under the erosion of the arc, so that the pressure around the gas-producing connecting rod increases and forms a pressure difference with the outside of the circuit breaker, thereby forming an air blow towards the arc extinguishing chamber for the arc. Under the action of the air blow, the arc passes through the arc extinguishing chamber and reduces the temperature of the arc in the process, so that the arc energy is fully cooled, and at the same time generates a higher arc voltage to extinguish the arc, thereby improving the arc extinguishing safety of the circuit breaker. In addition, during the above process, the arc-shaped baffle always covers the opening, thereby isolating the arc extinguishing chamber from the operating mechanism, preventing the arc generated when the moving contact and the static contact are disconnected from spraying onto the operating mechanism and making the operating mechanism energized, further improving the safety of the circuit breaker.

[0013] In one possible implementation, the baffle is an arc-shaped baffle, and the center of the arc-shaped baffle is located on the side of the arc-shaped baffle close to the operating mechanism. In this implementation, the shape of the arc-shaped baffle can match the motion trajectory of the moving contact, so that the arc-shaped baffle can rotate with the moving contact and maintain coverage of the opening.

[0014] In one possible implementation, the end of the gas-generating connecting rod, remote from the operating mechanism, passes through the baffle and the opening and extends toward the arc extinguishing chamber. This allows the gas-generating connecting rod to extend to the point where the moving contact contacts the stationary contact. When an arc forms between the moving and stationary contacts, gas is directly blown into the arc, quickly extinguishing it.

[0015] In one possible implementation, the moving contact assembly further includes a housing, to which the operating mechanism is fixedly connected, and the housing is rotatably connected to the outer shell. One end of the gas-generating connecting rod, proximate to the operating mechanism, is located within the housing, while the other end extends out of the housing. A baffle is located on a side surface of the housing proximate to the arc extinguishing chamber. When the operating mechanism drives the housing to rotate relative to the outer shell, the housing pushes the gas-generating connecting rod to rotate relative to the outer shell, thereby driving the moving contact to rotate. Thus, by pushing the operating handle, the operating mechanism can be controlled to rotate the housing, thereby directly pushing the moving contact to rotate.

[0016] In one possible implementation, the rotation center of the shell relative to the housing overlaps with the rotation center of the gas-producing connecting rod relative to the housing, so that the shell and the gas-producing connecting rod can be connected by the same rotating shaft, and the rotating shaft can simultaneously rotate the shell and the gas-producing connecting rod to the housing to simplify the structure of the moving contact assembly.

[0017] In one possible implementation, the moving contact includes a rotating rod and a contact. The rotating rod opposes the gas-generating connecting rod, and the contact is located at the end of the rotating rod near the arc extinguishing chamber. The moving contact assembly also includes a spring located within the housing, one end of the spring fixedly connected to the housing and the other end to the rotating rod. The spring is used to apply tension to the moving contact when the circuit breaker is closed, ensuring good contact between the moving contact and the stationary contact.

[0018] In one possible implementation, the end of the contact close to the static contact is used to contact or separate with the static contact, and the end of the contact away from the static contact is provided with an arc contact. The arc contact has an arc striking height in the direction away from the static contact, and is used to guide the arc to concentrate on the arc contact when the moving contact and the static contact are disconnected, thereby facilitating the concentrated guidance of the arc toward the arc extinguishing chamber.

[0019] In one possible implementation, the moving contact assembly includes multiple moving contacts, arranged sequentially along the width of the circuit breaker and fixedly connected to the gas-generating connecting rod. Among the multiple moving contacts, the arcing contact of one moving contact has an arc-strike height greater than that of the other moving contacts. When an arc is generated during disconnection, the arc is concentrated on one of the moving contacts, reducing electrical erosion and electrical losses in the other moving contacts during disconnection, thereby reducing losses in the other moving contacts.

[0020] In a possible implementation, the movable contact and the gas-generating connecting rod are rotatably connected to the housing via a rotating shaft, and the rotating shaft can achieve relative fixation of the movable contact and the gas-generating connecting rod.

[0021] In one possible implementation, the current-carrying assembly further includes a conductor and two copper bars arranged relative to each other along the height direction of the circuit breaker, each of which extends along the depth direction of the circuit breaker. One end of the conductor is connected to one of the two copper bars, and the other end is connected to the moving contact. Furthermore, along the depth direction of the circuit breaker, the conductor is located on the side of the moving contact near the arc extinguishing chamber relative to the rotation center of the housing. The other of the two copper bars is connected to the static contact. In this implementation, the conductor is always located on the side of the moving contact's rotation center away from the operating mechanism. Therefore, along the depth direction of the circuit breaker, the conductor is always spaced apart from the operating mechanism to prevent the conductive conductor from affecting the operating mechanism.

[0022] In one possible implementation, the circuit breaker also includes a trip control assembly, which enables the circuit breaker to be freely tripped and opened and closed. Specifically, along the height of the circuit breaker, the trip control assembly and the conductor are arranged on the same side of the moving contact assembly, or the trip control assembly and the conductor are arranged on opposite sides of the moving contact assembly. The trip control assembly is in transmission connection with the operating mechanism. When a fault current is detected, the trip control assembly is used to control the operating mechanism to drive the moving contact assembly to separate the moving contact from the stationary contact.

[0023] In one possible implementation, the power equipment further includes an arc-extinguishing module, located on a side of the arc-extinguishing chamber, away from the operating mechanism, along the depth direction of the circuit breaker. The arc-extinguishing module is configured to purify gas ejected from the arc-extinguishing chamber. The power equipment further includes a circuit board located within the cabinet. The circuit board and the multiple circuit breakers are sequentially arranged along the depth direction of the cabinet, with the circuit board positioned proximate to the arc-extinguishing module. The arc-extinguishing module absorbs charged ions ejected from the arc-extinguishing chamber, ensuring that the gas ejected from the circuit breaker through the arc-extinguishing module is completely arc-free, thereby preventing adverse effects on the power equipment's circuit board.

[0024] In one possible implementation, an arc jet is provided between the arc extinguishing module and the arc extinguishing chamber. The jet connects the arc extinguishing chamber and the arc extinguishing module and is positioned near the arc extinguishing chamber on the side of the circuit breaker facing away from the static contact. A gas-generating connecting rod is used to generate a gas puff directed toward the jet. This puff of gas causes the arc to pass through the arc extinguishing chamber, reducing its temperature and effectively cooling the arc energy. This also generates a higher arc voltage, thereby improving the arc extinguishing safety of the circuit breaker.

[0025] In a second aspect, the present application provides a circuit breaker. The circuit breaker comprises a housing, an operating handle, an operating mechanism, a current flow assembly, and an arc extinguishing chamber. The operating handle is connected to the operating mechanism. The current flow assembly comprises a movable contact assembly and a stationary contact. At least the portion of the operating handle proximate the operating mechanism, the operating mechanism, the movable contact assembly, and the arc extinguishing chamber are sequentially arranged within the housing along the depth direction of the circuit breaker. A partition is provided within the housing, located between the operating mechanism and the arc extinguishing chamber and extending along the height direction of the circuit breaker. The partition is used to separate the operating mechanism and the arc extinguishing chamber and has an opening. The movable contact assembly is rotatable relative to the housing. The movable contact assembly specifically comprises a movable contact and a gas generating connecting rod, wherein the movable contact and the gas generating connecting rod are relatively fixed. The gas generating connecting rod is used to generate gas blowing toward the arc extinguishing chamber. The end of the gas generating connecting rod proximate the operating mechanism is rotatably connected to the housing, and the end of the gas generating connecting rod distal to the operating mechanism is provided with a baffle located on the side of the opening proximate to the operating mechanism. The stationary contact is located on the side of the movable contact assembly distal to the operating mechanism along the depth direction of the circuit breaker. The operating mechanism is connected to the moving contact assembly. The operating handle controls the mechanism, driving the gas-generating connecting rod of the moving contact assembly to rotate relative to the housing, thereby contacting or separating the moving contact from the stationary contact. A baffle covers the opening while the operating mechanism rotates the gas-generating connecting rod relative to the housing. The arc extinguishing chamber extinguishes the arc generated when the moving and stationary contacts separate.

[0026] In the circuit breaker of the present application, the part of the operating handle close to the operating mechanism, the operating mechanism, the moving contact, the arc extinguishing chamber and the arc extinguishing module are arranged along the depth direction of the circuit breaker. It can be understood that this part of the operating handle, the operating mechanism, the moving contact assembly, the arc extinguishing chamber and the arc extinguishing module are arranged in a layered manner along the depth direction of the circuit breaker. This can reduce the layout of the components of the circuit breaker along the height direction, thereby reducing the height dimension of the circuit breaker, and then reducing the occupied space of the circuit breaker to increase the number of circuit breakers that can be arranged in the cabinet. Among them, the circuit breaker includes a first layer (electrical operation or manual operation layer), a second layer (operation layer), a third layer (current flow layer), a fourth layer (arc extinguishing layer) and a fifth layer (arc extinguishing layer). When the circuit breaker is specifically set up, the operating handle is located on the first layer, the operating mechanism is located on the second layer, the current flow assembly is located on the third layer, the arc extinguishing chamber is located on the fourth layer, and the arc extinguishing module is located on the fifth layer. Among them, the moving contact of the moving contact assembly can extend along the depth direction of the circuit breaker, so that the size of the moving contact assembly in the height direction of the circuit breaker is reduced, which can further facilitate the minimization of the circuit breaker in the height direction. Furthermore, while achieving miniaturization, the moving contact assembly can also make the driving force arm for closing the moving contact and the static contact larger, thereby reducing the driving force of the operating mechanism and facilitating the operational stability of the operating mechanism. Furthermore, the moving contact extends toward the arc extinguishing chamber, and the static contact is located on the side of the moving contact away from the operating mechanism along the depth direction of the circuit breaker. Thus, during the process of contact or disconnection between the moving contact and the static contact, the movement stroke of the moving contact is along the height direction of the circuit breaker without affecting the movement of the operating mechanism, thereby facilitating the electrical separation of the moving contact assembly. Furthermore, in the fourth layer (arc extinguishing layer), when the moving contact and the static contact separate, an arc is generated between the moving contact and the static contact. The gas-generating connecting rod made of a gas-generating material generates a large amount of gas under the erosion of the arc, which increases the pressure around the gas-generating connecting rod and forms a pressure difference with the outside of the circuit breaker, thereby forming a gas blow toward the arc extinguishing chamber. Under the action of air blowing, the arc passes through the arc extinguishing chamber, reducing its temperature in the process, allowing the arc energy to be fully cooled. This process also generates a high arc voltage to extinguish the arc, thereby improving the arc extinguishing safety of the circuit breaker. Furthermore, during this process, the arc-shaped baffle always covers the opening, thus isolating the arc extinguishing chamber from the operating mechanism. This prevents the arc generated when the moving and static contacts disconnect from being ejected into the operating mechanism and causing it to become energized, further improving circuit breaker safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic diagram of an application scenario of a circuit breaker provided in an embodiment of the present application;

[0028] FIG2 is a schematic diagram of an electric power device provided in an embodiment of the present application;

[0029] FIG3 is a schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0030] FIG4 is another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0031] FIG5 is another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0032] FIG6 is a schematic diagram of a moving contact assembly provided in an embodiment of the present application;

[0033] FIG7 is another schematic diagram of a moving contact assembly provided in an embodiment of the present application;

[0034] FIG8 is a schematic diagram of the cooperation between the movable contact and the gas-generating connecting rod provided in an embodiment of the present application;

[0035] FIG9 is a schematic cross-sectional view of the moving contact assembly in FIG7 ;

[0036] FIG10 is a schematic diagram of a gas-generating connecting rod provided in an embodiment of the present application;

[0037] FIG11 is a schematic diagram of a moving contact provided in an embodiment of the present application;

[0038] FIG12 is another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0039] FIG13 is a schematic diagram of a static contact assembly provided in an embodiment of the present application;

[0040] FIG14 is another schematic diagram of a stationary contact assembly provided in an embodiment of the present application;

[0041] FIG15 is another schematic diagram of a stationary contact assembly provided in an embodiment of the present application;

[0042] FIG16 is a partial schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0043] FIG17 is another partial schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0044] FIG18 is another partial schematic diagram of the circuit breaker provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 01-Power supply and distribution system 02-Power module 10-Power equipment

[0047] 11-Cabinet 20-Circuit breaker 21-Casing

[0048] 22-operating handle 23-operating mechanism 24-flow assembly

[0049] 25-arc extinguishing chamber 26-arc extinguishing module 27-tripping control component

[0050] 28-arc spray port 110-user operation panel 210-circuit breaker operation panel

[0051] 212- partition 241- moving contact assembly 242- static contact assembly

[0052] 243-wire 244-first copper bar 245-second copper bar

[0053] 246-first joint 247-second joint 257-arc starter plate

[0054] 2411-gas-generating connecting rod 2412-moving contact 2413-housing

[0055] 2414- Spring 2421- Static contact 2422- First gas production plate

[0056] 2423- Second gas production plate 2571- Gas production port 24111- Baffle

[0057] 24112-Moving contact mounting groove 24113-Boss 24121-Rotation rod

[0058] 24122-Contact 24123-Arc Contact 24124-Hook

[0059] 24125-Gap DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0061] In order to facilitate understanding of the circuit breaker and power equipment provided in the embodiment of the present application, the application scenario thereof is described below. The circuit breaker and power equipment provided in the embodiment of the present application can be widely used in various power supply and distribution systems. Figure 1 is a schematic diagram of an application scenario of the circuit breaker provided in the embodiment of the present application. As shown in Figure 1, in an example provided in the present application, the circuit breaker can be used in the power supply and distribution system 01 of the data center, for connecting, carrying, and disconnecting the current between the power supply network and the data center. The power supply and distribution system 01 may include a power module 02 (as shown in Figure 1, which is composed of a plurality of UPSs connected in parallel and in series) and a plurality of circuit breakers. Take the power supply and distribution system 01 as an example, which is provided with three circuits, namely the first circuit C1, the second circuit C2, and the third circuit C3. Each circuit is equipped with a corresponding circuit breaker. The first circuit C1 is connected to the power module O2, and a first circuit breaker K1 is provided at the input end of the power module O2, and a second circuit breaker K2 is provided at the output end; the second circuit C2 is connected to the bypass module, and a third circuit breaker K3 is provided at one end of the bypass module, and the other end is connected to the second circuit breaker K2; the third circuit C3 is a backup circuit and is equipped with a fourth circuit breaker K4.

[0062] When the circuit between the power grid (or power source) and the data center needs to be connected, the first and second circuit breakers K1, K2, can be switched to the closed state. When the circuit between the power grid and the data center needs to be disconnected, either the first or second circuit breaker K1, K2, can be switched to the open state. In this way, the power on and off state of the data center is controlled by controlling the closed and open states of the circuit breakers. When the data center's electrical equipment requires repair or maintenance, the first and second circuit breakers K1, K2, can be switched to the open state, and the third or fourth circuit breaker K3, K4, can be switched to the closed state to facilitate repair and maintenance of the electrical equipment.

[0063] In addition, the circuit breaker of the present application can also be used in the power supply and distribution system 01 of enterprise power equipment or public power equipment to connect, carry, and disconnect the current between the power supply network and enterprise power equipment or public power equipment. For example, when the power equipment (such as 4G base stations, 5G base stations, etc.) needs to work normally, the staff can switch the circuit breaker to the closed state so that the power supply network can provide the power required for normal operation to the power equipment. When the power equipment needs to be inspected or maintained, the staff can switch the circuit breaker to the open state to facilitate the inspection, maintenance, etc. of the power equipment.

[0064] The above-mentioned power supply system may specifically include a plurality of power devices 10. FIG2 is a schematic diagram of the power equipment provided in an embodiment of the present application. As shown in FIG2 , each power device 10 includes a cabinet 11, and a plurality of power modules and a plurality of circuit breakers (K1, ..., Km) located in the cabinet 11. Among them, the side of the cabinet 11 facing the staff is a user operation surface 110. In the present application, taking the state where the cabinet 11 is placed on the ground as an example, the dimension of the user operation surface 110 parallel to the ground is the width, the dimension perpendicular to the ground is the height, and the dimension perpendicular to the user operation surface 110 is the depth. The aforementioned multiple power modules are stacked in sequence along the height direction H of the cabinet 11, and the aforementioned multiple circuit breakers are placed in sequence on one side of the aforementioned multiple power modules along the width direction W of the cabinet 11. Among them, the power module is used to convert the voltage from the power grid to output an adapted voltage to the load device. Specifically, the power module may be an AC / AC module or an AC / DC module.

[0065] In existing power equipment, due to the limited width and height of the cabinet, the number of circuit breakers on the user operation surface 110 is limited, which cannot meet the large-capacity and high-density layout requirements of the power supply and distribution system.

[0066] Therefore, the present application provides a circuit breaker and an electrical device to adjust the overall size of the circuit breaker to change the space occupied by the circuit breaker in the cabinet, thereby increasing the number of circuit breakers that can be arranged in the cabinet and improving the safety of the circuit breaker.

[0067] It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and claims of this application, the singular expressions "a," "an," "said," "above," "the," and "this" are intended to include expressions such as "one or more," unless the context clearly indicates otherwise.

[0068] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0069] Figure 3 is a schematic diagram of a circuit breaker provided in an embodiment of the present application, and Figure 4 is another schematic diagram of a circuit breaker provided in an embodiment of the present application, with Figure 4 showing a cross-sectional view of the circuit breaker shown in Figure 3 along the line AA. As shown in Figures 3 and 4, the circuit breaker 20 includes a housing 21, an operating handle 22, an operating mechanism 23, a flow assembly 24, and an arc extinguishing chamber 25. Specifically, the operating handle 22 is connected to the operating mechanism 23. The flow assembly 24 includes a moving contact assembly 241 and a stationary contact 2421. In one embodiment, the end of the operating handle 22 distal to the operating mechanism 23 can extend beyond the housing 21, allowing an operator to push the operating handle 22 to close and open the circuit breaker. In another embodiment, the housing 21 is provided with a knob to manually open and close the circuit breaker 20. Specifically, the end of the operating handle 22 distal to the operating mechanism 23 is connected to the knob. When the operator manually operates the knob, turning the knob causes the operating handle 22 to move in the height direction h. In another embodiment, the circuit breaker 20 may further include a remote controller and an electric operating device. The electric operating device is connected to the operating handle 22 and communicates with the remote controller to electrically open and close the circuit breaker 20. When an operator performs electric operation, they send a closing or opening command to the remote controller, which then controls the electric operating device to push the operating handle 22. In this embodiment, the operator can issue commands from close proximity to the circuit breaker 20 or remotely via a communication device. Furthermore, at least the portion of the operating handle 22 proximal to the operating mechanism 23, the operating mechanism 23, the moving contact assembly 241, and the arc extinguishing chamber 25 are sequentially arranged within the housing 21 along the depth direction d of the circuit breaker 20. Along the depth direction d of the circuit breaker 20, the stationary contact 2421 is located on the side of the moving contact assembly 241 away from the operating mechanism 23. That is, along the depth direction d of the circuit breaker 20, the operating mechanism 23 is located on one side of the operating handle 22 and is in transmission connection with the operating mechanism 23. The flow assembly 24 is located on the side of the operating mechanism 23 away from the operating handle 22. The moving contact assembly 241 includes a gas-generating connecting rod 2411 and a moving contact 2412. The gas-generating connecting rod 2411 is rotatably connected to the housing 21, and the moving contact 2412 is fixed relative to the gas-generating connecting rod 2411. The operating mechanism 23 is connected to the moving contact assembly 241. The operating handle 22 is used to control the operating mechanism 23 to drive the moving contact 2412 to move, so that the moving contact 2412 contacts or disconnects the moving contact 2412 from the static contact 2421. The arc extinguishing chamber 25 is used to eliminate the arc generated when the moving contact 2412 and the static contact 2421 disconnect. The static contact 2421 is located on one side of the arc extinguishing chamber 25 along the height direction h of the circuit breaker 20. The movement trajectory of the moving contact 2412 extends from the static contact 2421 to the other side of the arc extinguishing chamber 25 along the height direction of the circuit breaker 20.

[0070] In this application, the side of the operating handle 22 that extends out of the housing 21 is the circuit breaker operating surface 210. Taking the circuit breaker operating surface 210 as an example, the dimension of the circuit breaker 20 along the direction in which the operating handle 22 is pushed is the height, the dimension perpendicular to the height h is the width w, and the dimension perpendicular to the circuit breaker operating surface 210 is the depth d. The first direction is the depth direction d of the circuit breaker 20. In other words, the operating handle 22, operating mechanism 23, current-carrying assembly 24, and arc extinguishing chamber 25 are sequentially arranged along the depth direction d of the circuit breaker 20. When the circuit breaker 20 is placed in the cabinet 11, the height direction h of the circuit breaker 20 is aligned with the width direction W of the cabinet 11, the width direction w of the circuit breaker 20 is aligned with the height direction H of the cabinet 11, and the depth direction d of the circuit breaker 20 is aligned with the depth direction D of the cabinet 11. Therefore, when a worker performs a closing or opening operation on the circuit breaker 20, the worker pushes the operating handle 22 along the width direction W of the cabinet 11. When the operating handle 22 is pushed to perform an opening or closing operation, the operating mechanism 23 can follow the movement of the operating handle 22 to drive the movable contact 2412 to disconnect or contact the static contact 2421. When the movable contact 2412 is in contact with the static contact 2421, the circuit breaker 20 is in the closed state; when the movable contact 2412 is disconnected from the static contact 2421, the circuit breaker 20 is in the open state. In the circuit breaker 20 of the present application, at least the portion of the operating handle 22 near the operating mechanism 23, the operating mechanism 23, the movable contact assembly 241, and the arc extinguishing chamber 25 are arranged along the depth direction d of the circuit breaker 20, and can be regarded as being arranged in a layered manner, thereby reducing the height h of the circuit breaker 20 and reducing the space occupied by the circuit breaker 20, thereby increasing the number of circuit breakers 20 that can be arranged in the cabinet 11. Specifically, the operating handle 22 is located on the first layer (electrical or manual operation layer), the operating mechanism 23 is located on the second layer (operation layer), a portion of the current flow assembly 24 is located on the third layer (current flow layer), and the arc extinguishing chamber 25 is located on the fourth layer (arc extinguishing layer). In the fourth layer (arc extinguishing layer), when the moving contact 2412 and the static contact 2421 are disconnected, an arc is generated between the moving contact 2412 and the static contact 2421. Under the erosion of the arc, the gas-generating connecting rod 2411 produces a large amount of gas, which increases the pressure around the gas-generating connecting rod 2411 and forms a pressure difference with the outside of the circuit breaker 20, thereby generating a gas blow toward the arc extinguishing chamber 25. Under the action of the gas blow, the arc passes through the arc extinguishing chamber 25, and in the process, the arc temperature is reduced, so that the arc energy is fully cooled, and a higher arc voltage is generated, thereby extinguishing the arc, thereby improving the arc extinguishing safety of the circuit breaker 20. Furthermore, the moving contact 2412 of the moving contact assembly 241 can extend along the depth direction d of the circuit breaker 20, so that the size of the moving contact assembly 241 in the height direction h of the circuit breaker 20 is reduced, which can further facilitate minimization of the circuit breaker 20 in the height direction h.

[0071] Figure 5 is another schematic diagram of a circuit breaker according to an embodiment of the present application, wherein Figure 5 shows another cross-sectional view of the circuit breaker shown in Figure 3 along the AA direction. As shown in Figure 5 , when the movable contact assembly 241 is specifically configured, a partition 212 is provided within the housing 21. The partition 212 is located between the operating mechanism 23 and the arc extinguishing chamber 25 and extends along the height direction h of the circuit breaker 20. The partition 212 has an opening. Along the depth direction d of the circuit breaker 20, the gas-generating connecting rod 2411 is located on the side of the opening closest to the operating mechanism 23 and can always cover the opening. Figure 6 is a schematic diagram of the movable contact assembly according to an embodiment of the present application, Figure 7 is another schematic diagram of the movable contact assembly according to an embodiment of the present application, and Figure 8 is a schematic diagram of the movable contact and gas-generating connecting rod according to an embodiment of the present application. As shown in Figures 6, 7, and 8, the movable contact 2412 is fixed relative to the gas-generating connecting rod 2411. The end of the gas-generating connecting rod 2411, which is closest to the operating mechanism 23, is rotatably connected to the housing 21. A baffle 24111 is provided on the end of the gas-generating connecting rod 2411 away from the operating mechanism 23. The surface of the baffle 24111, located near the arc-extinguishing chamber 25, covers the opening of the partition 212. When the operating mechanism 23 drives the movable contact 2412 to rotate, the baffle 24111 maintains its coverage, thereby isolating the operating mechanism 23 from the arc-extinguishing layer. Therefore, when the movable contact 2412 and the stationary contact 2421 disconnect, the end of the gas-generating connecting rod 2411 near the arc-extinguishing chamber 25 is eroded by the arc, generating gas blowing. The gas-generating connecting rod 2411 moves with the movable contact 2412, maintaining the gas blowing around the movable contact 2412. This continuously blows the arc toward the arc-extinguishing chamber 25 to extinguish the arc during disconnection between the movable contact 2412 and the stationary contact 2421, thereby improving the breaking capacity of the movable and stationary contacts 2421 and protecting the operating mechanism 23 from arc intrusion. In the above embodiment, the arc-shaped baffle 24111 and the gas-producing connecting rod 2411 can be an integrated structure, thereby improving the structural strength of the gas-producing connecting rod 2411. Alternatively, the arc-shaped baffle 24111 and the gas-producing connecting rod 2411 can be fixedly connected by bonding, welding, riveting or threaded connection.

[0072] In the above embodiment, the arc-shaped baffle 24111 can be an arc-shaped baffle, the center of which is located on the side of the arc-shaped baffle close to the operating mechanism 23. In this implementation, the shape of the arc-shaped baffle can match the motion trajectory of the moving contact 2412, so that the arc-shaped baffle can rotate with the moving contact 2412 and maintain coverage of the opening. In another embodiment, the end of the gas-generating connecting rod 2411 away from the operating mechanism 23 passes through the baffle 24111 and the opening and extends toward the arc extinguishing chamber 25. In this way, the gas-generating connecting rod 2411 can extend to the position where the moving contact 2412 contacts the static contact 2421, and when an arc is generated between the moving contact 2412 and the static contact 2421, it can directly generate gas to extinguish the arc, thereby quickly extinguishing the arc.

[0073] Figure 9 is a schematic cross-sectional view of the movable contact assembly in Figure 7 . As shown in Figures 6, 7, and 9, the movable contact assembly 241 further includes a housing 2413, which is rotatably connected to the outer shell 21 (at point O). The operating mechanism 23 is connected to the housing 2413. An opening is provided on the side of the housing 2413 near the arc extinguishing chamber 25. A gas generating connecting rod 2411 is disposed on the side of the housing 2413 near the arc extinguishing chamber 25. A baffle 24111 is located outside the housing 2413 near the arc extinguishing chamber 25. The gas generating connecting rod 2411 extends into the housing 2413 through the opening and is connected to the outer shell 21 within the housing 2413 via a rotating shaft (at point O'). When the operating handle 22 is pushed along the height direction of the circuit breaker 20, the operating handle 22 controls the operating mechanism 23 to rotate the housing 2413. During the rotation of the housing 2413, the wall of the opening of the housing 2413 pushes the gas-generating connecting rod 2411 to rotate about point O', thereby driving the rotation of the movable contact 2412. In the embodiment of the present application, the rotation center O of the housing 2413 and the rotation center O' of the gas-generating connecting rod 2411 may or may not overlap. When overlapping, the housing 2413 and the gas-generating connecting rod 2411 can be rotatably connected to the outer shell 21 via the same rotating shaft.

[0074] Continuing with Figures 6 to 9 , the moving contact assembly 241 may include a housing 2413, multiple groups of moving contacts 2412, and multiple gas-generating connecting rods 2411. The number of the multiple groups of moving contacts 2412 and the multiple gas-generating connecting rods 2411 is equal and arranged in a one-to-one correspondence. Specifically, each group of moving contacts 2412 includes multiple moving contacts 2412, each of which is sequentially fixed to a gas-generating connecting rod 2411 along the width direction w of the circuit breaker 20. Figure 10 is a schematic diagram of a gas-generating connecting rod provided in an embodiment of the present application. As shown in Figure 10 , the gas-generating connecting rod 2411 is provided with multiple moving contact mounting slots 24112, each corresponding to the multiple moving contacts 2412. Each moving contact 2412 is accommodated in a corresponding moving contact mounting slot 24112. Within each group of moving contacts 2412, the multiple moving contacts 2412 can form multiple sets of parallel contact finger structures. This structure of multiple parallel contact fingers can increase the contact area between the moving contact 2412 and the static contact 2421 to reduce contact resistance, thereby improving the flow capacity between the moving contact 2412 and the static contact 2421. In addition, this structure of multiple parallel contact fingers can also reduce the electric repulsion force when the moving contact 2412 and the static contact 2421 are disconnected, thereby improving the short-term tolerance index of the contact system. In the moving contact assembly 241 of this embodiment, the housing 2413, multiple groups of moving contacts 2412, and multiple gas-generating connecting rods 2411 can all be relatively fixed via the same rotating shaft, while achieving a rotational connection between the multiple groups of moving contacts 2412 and the multiple gas-generating connecting rods 2411 and the housing 21, thereby further simplifying the structure of the moving contact assembly 241 for easier installation.

[0075] Figure 11 is a schematic diagram of a movable contact provided in an embodiment of the present application. As shown in Figure 11, movable contact 2412 includes a rotating rod 24121 and a contact 24122. Rotating rod 24121 can be fixed within movable contact mounting slot 24112 and extends out of movable contact mounting slot 24112 toward arc extinguishing chamber 25. Contact 24122 is located at the end of rotating rod 24121 closest to arc extinguishing chamber 25. Rotating rod 24121 is provided with a hook 24124, which is located within housing 2413. As shown in Figures 6 and 7, movable contact assembly 241 also includes a spring 2414 (ST) located within housing 2413. One end of spring 2414 is connected to housing 2413, and the other end is connected to hook 24124. When the circuit breaker 20 is closed, the spring 2414 applies tension to the moving contact 2412, maintaining pressure between the moving contact 2412 and the stationary contact 2421 when closed. In the above embodiment, when the moving contact assembly 241 includes multiple moving contacts 2412, the moving contact assembly 241 includes multiple springs 2414 corresponding to the plurality of moving contacts 2412. One end of the spring 2414 is fixedly connected to the corresponding moving contact 2412, and the other end is fixedly connected to the housing 2413. In the above embodiment, the rotating rod 24121 also has a notch 24125. This notch 24125 is used to secure the wire 243, thereby electrically connecting the moving contact 2412 to the copper busbar of the current-carrying assembly 24.

[0076] As shown in Figure 11 , the movable contact 2412 includes a contact 24122 that contacts or disconnects the stationary contact 2421. An arcing contact 24123 is provided on the side of the contact 24122 facing away from the stationary contact 2421. The arcing contact 24123 has an arc striking height l in a direction away from the stationary contact 2421. Among the multiple movable contacts 2412, the arcing height l of the arcing contact 24123 of one or more movable contacts 2412 is greater than the arcing height l of the arcing contacts 24123 of the other movable contacts 2412. As shown in Figures 6 and 7 , in one specific embodiment, the movable contact assembly 241 includes three groups of parallel contact finger structures, each group of which includes five movable contacts 2412 arranged side by side. The arc striking height l of the movable contact 2412 located in the middle is greater than the arc striking height l of the arc contacts 24123 of the other four movable contacts 2412, and the arc striking height l of the arc contacts 24123 of the other four movable contacts 2412 are equal. When the movable contact 2412 is disconnected from the stationary contact 2421, the movable contact 2412 with the largest arc striking height l is closer to the stationary contact 2421, so that the arc generated by the movable contact assembly 241 is mainly concentrated on the movable contact 2412 with the largest arc striking height l, thereby reducing the loss to the other movable contacts 2412.

[0077] As shown in Figures 6, 9, and 10, a boss 24113 is provided on the side of the baffle 24111 near the operating mechanism 23. This boss 24113 covers a portion of the movable contact mounting slot 24112. When the movable contact 2412 is accommodated in the movable contact mounting slot 24112, the boss 24113 retains the rotating rod 24121 of the movable contact 2412 within the movable contact mounting slot 24112. Furthermore, the surface shape of the rotating rod 24121 matches that of the baffle 24111 and the boss 24113. When the movable contact 2412 is disconnected from the stationary contact 2421, the baffle 24111 and the gas generating connecting rod 2411 are deformed by the high temperature of the arc. At this time, the rotating rod 24121 supports the baffle 24111 and the gas generating connecting rod 2411.

[0078] Figure 12 is another schematic diagram of a circuit breaker according to an embodiment of the present application, and Figure 13 is a schematic diagram of a static contact assembly according to an embodiment of the present application. As shown in Figures 12 and 13, the circuit breaker 20 includes a static contact assembly 242, which specifically includes a first gas-generating plate 2422 and the aforementioned static contact 2421. The first gas-generating plate 2422 is disposed on the copper busbar of the flow assembly 24, and the static contact 2421 is disposed on a side surface of the first gas-generating plate 2422 near the arc extinguishing chamber 25. The first gas-generating plate 2422 is used to generate a gas blow toward the arc extinguishing chamber 25. Along the height direction h of the circuit breaker 20, the static contact 2421 is located between the first gas production plate 2422 and the arc extinguishing chamber 25, so that the gas blow generated by the first gas production plate 2422 can blow the arc around the static contact 2421 directly to the arc extinguishing chamber 25, that is, the arc passes through the arc extinguishing chamber 25 from the lower right corner of the arc extinguishing chamber 25 in Figure 12 and reaches the upper left corner of the arc extinguishing chamber 25.

[0079] Figure 14 is another schematic diagram of a static contact assembly provided in an embodiment of the present application, and Figure 15 is another schematic diagram of a static contact assembly provided in an embodiment of the present application. As shown in Figures 14 and 15, the static contact assembly 242 also includes a second gas production plate 2423. The second gas production plate 2423 is disposed on a side surface of the first gas production plate 2422 near the arc extinguishing chamber 25. The second gas production plate 2423 is located on a side of the static contact 2421 near the operating mechanism 23 along the depth direction d of the circuit breaker 20. As a result, the first gas production plate 2422 and the second gas production plate 2423 can form multiple gas blows around the static contact 2421, enhancing the gas production and arc blowing effect. In one embodiment, the first gas production plate 2422 and the second gas production plate 2423 can be an integrated structure, thereby simplifying the manufacturing process and installation process of the static contact assembly 242. When the moving contact 2412 and the static contact 2421 are disconnected, air blowing is generated below and on the sides of the static contact 2421, thereby increasing the air pressure around the static contact 2421 to blow the arc around the static contact 2421 toward the arc extinguishing chamber 25 for extinguishing the arc.

[0080] As shown in Figure 5, the current flow assembly 24 also includes a wire 243, a first copper bar 244, and a second copper bar 245. The first copper bar 244 and the second copper bar 245 are arranged opposite each other along the height direction h of the circuit breaker 20, and the first copper bar 244 and the second copper bar 245 extend along the depth direction d of the circuit breaker 20. In one embodiment, the first copper bar 244 and the second copper bar 245 can be located on either side of the arc extinguishing chamber 25. In another embodiment, the first copper bar 244 and the second copper bar 245 can also be located on the same side of the arc extinguishing chamber 25. The end of the first copper bar 244 near the operating mechanism 23 is electrically connected to the moving contact 2412 via the wire 243. The end of the first copper bar 244 away from the operating mechanism 23 is provided with a first connector 246. The static contact assembly 242 is provided on the second copper bar 245 and is electrically connected to the second copper bar 245. The end of the second copper bar 245 away from the operating mechanism 23 is provided with a second connector 247. In a specific configuration, the first copper bar 244 and the second copper bar 245 can be fixed to the housing 21, respectively. The surface of the first copper bar 244 facing away from the arc extinguishing chamber 25 is in contact with the inner wall of the housing 21, and the surface of the second copper bar 245 facing away from the arc extinguishing chamber 25 is in contact with the inner wall of the housing 21. When the movable contact assembly 241 includes multiple movable contacts 2412, the current flow assembly 24 can include multiple wires 243, each of which is connected to each of the multiple movable contacts 2412 in a one-to-one correspondence. Furthermore, the wires 243 are connected to the rotating rods 24121 of the movable contacts 2412. Therefore, the wires 243 are arranged in the space between the movable contact assembly 241, the arc extinguishing chamber 25, and the operating mechanism 23, improving space utilization. Furthermore, one end of the wire 243 is electrically connected to the first copper bar 244, and the other end can be connected to the notch 24125 of the rotating rod 24121 of the movable contact 2412. When the operating mechanism 23 drives the moving contact assembly 241 to move, the wire 243 will not interfere with the movement of the operating mechanism 23 , and the wire 243 is prevented from accidentally touching the operating mechanism 23 and causing the operating mechanism 23 to be energized.

[0081] As shown in Figures 4 and 5, in one specific embodiment, the movable contact assembly 241 includes a housing 2413, a movable contact 2412, and a spring 2414 located within the housing 2413. The housing 2413 is rotatably connected to the outer shell 21, with the connection point being A. Therefore, the rotational center of the housing 2413 and the connection point A with the outer shell 21 can serve as a fixing rod OA. The stationary contact 2421 is located on the side of the housing 2413 away from the operating mechanism 23. The movable contact 2412 is located within the housing 2413 and extends out of the housing 2413 away from the operating mechanism 23. One end of the movable contact 2412 located within the housing 2413 is rotatably connected to the outer shell 21 and can rotate about point O' (which may or may not overlap with point O). The spring 2414 extends into the housing 2413 and can rotate relative to the outer shell 21 about the rotational center O'. The contact point between the movable contact 2412 and the housing 2413 is point E. One end of spring 2414 is connected to the rotating rod 24121 of movable contact 2412, and the other end is connected to housing 2413. Housing 2413 is used to rotate movable contact 2412 driven by fixed rod OA of operating mechanism 23. When circuit breaker 20 is closed, spring 2414 applies tension to movable contact 2412, maintaining pressure between movable contact 2412 and fixed contact 2421 when closed.

[0082] The arc extinguishing chamber 25 also includes an arc-strike plate 257. This plate is positioned near the static contact 2421 to promptly guide the arc around the static contact 2421. In one embodiment, the arc-strike plate 257 can be positioned on a side surface of the first gas generating plate 2422 that is adjacent to the arc extinguishing chamber 25. The arc-strike plate 257 is provided with a gas generating port 2571 to allow the gas generated by the first gas generating plate 2422 to flow toward the arc extinguishing chamber 25.

[0083] In one embodiment, the circuit breaker 20 further includes an arc extinguishing module 26, which is used to purify the gas ejected from the arc extinguishing chamber 25. The arc extinguishing module 26 is located on the side of the arc extinguishing chamber 25 away from the operating mechanism 23 along the depth direction d of the circuit breaker 20, that is, the arc extinguishing module 26 is located in the fifth layer (the arc extinguishing layer). An arc ejection port 28 is provided between the arc extinguishing chamber 25 and the arc extinguishing module. The arc ejection port 28 is used to connect the arc extinguishing chamber 25 and the arc extinguishing module 26, and the arc ejection port 28 is located near the side of the arc extinguishing chamber 25 away from the static contact 2421 along the height direction h. Therefore, when the baffle 2413 separates the operating mechanism 23 and the arc extinguishing chamber 25, the arc ejection port becomes the only outlet of the arc extinguishing chamber 25. When the moving contact 2412 is separated from the static contact 2421, the gas generating connecting rod 2411 can generate a gas blow toward the arc ejection port 28. The power equipment 10 also includes a circuit board located within the cabinet 11. The circuit board and multiple circuit breakers 20 are arranged sequentially along the depth direction D of the cabinet 11, and the circuit board is positioned near the arc suppression module 26. The arc suppression module 26 absorbs the charged ions ejected from the arc extinguishing chamber 25, ensuring that the gas ejected from the circuit breaker 20 through the arc suppression module 26 is completely arc-free, thus preventing any adverse effects on the circuit board of the power equipment 10.

[0084] Figure 16 is a partial schematic diagram of a circuit breaker provided in an embodiment of the present application. As shown in Figure 16, the circuit breaker 20 further includes a trip control assembly 27, which enables free tripping and opening and closing of the circuit breaker 20. The trip control assembly 27 is in transmission connection with the operating mechanism 23. Upon detecting a fault current, the trip control assembly 27 controls the operating mechanism 23 to drive the movable contact assembly 241 to move, thereby separating the movable contact 2412 from the stationary contact 2421. Figure 17 is another partial schematic diagram of a circuit breaker provided in an embodiment of the present application. As shown in Figures 16 and 17, the trip control assembly 27 and the conductor 243 are disposed on the same side of the movable contact assembly 241 along the height of the circuit breaker 20. Figure 18 is another partial schematic diagram of a circuit breaker provided in an embodiment of the present application. As shown in Figure 18, the trip control assembly 27 and the conductor 243 are disposed on either side of the movable contact assembly 241 along the height of the circuit breaker 20.

[0085] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electrical device, characterized in that, It includes a cabinet and a plurality of circuit breakers and a plurality of power modules located within the cabinet. The plurality of circuit breakers are sequentially arranged within the cabinet along the width direction of the cabinet. The height direction of the circuit breaker is the same as the width direction of the cabinet, the width direction of the circuit breaker is the same as the height direction of the cabinet, and the depth direction of the circuit breaker is the same as the depth direction of the cabinet; The circuit breaker includes a housing, an operating handle, an operating mechanism, a current-carrying component, and an arc extinguishing chamber; the operating handle is connected to the operating mechanism; the current-carrying component includes a moving contact assembly and a static contact; at least the part of the operating handle close to the operating mechanism, the operating mechanism, the moving contact assembly, and the arc extinguishing chamber are sequentially arranged within the housing along the depth direction of the circuit breaker; A partition is provided within the housing. The partition is located between the operating mechanism and the arc extinguishing chamber and extends along the height direction of the circuit breaker. The partition is used to separate the operating mechanism and the arc extinguishing chamber, and the partition is provided with an opening; The moving contact assembly is rotatable relative to the housing; the moving contact assembly includes a moving contact and a gas-producing connecting rod. The moving contact is relatively fixed to the gas-producing connecting rod; the gas-producing connecting rod is used to form a gas blast towards the arc extinguishing chamber. One end of the gas-producing connecting rod close to the operating mechanism is rotatably connected to the housing, and a baffle is provided at the end of the gas-producing connecting rod far from the operating mechanism. The baffle is located on the side of the opening close to the operating mechanism; The static contact is located on the side of the moving contact assembly far from the operating mechanism along the depth direction of the circuit breaker; The operating mechanism is connected to the moving contact assembly. The operating handle is used to control the operating mechanism to drive the gas-producing connecting rod of the moving contact assembly to rotate relative to the housing, so that the moving contact contacts or separates from the static contact; the baffle is used to always cover the opening during the process of the operating mechanism driving the gas-producing connecting rod to rotate relative to the housing; The arc extinguishing chamber is used to eliminate the arc generated when the moving contact separates from the static contact.

2. The power equipment according to claim 1, characterized in that The baffle is an arc-shaped baffle, and the center of the arc of the arc-shaped baffle is located on the side of the arc-shaped baffle close to the operating mechanism.

3. The electrical equipment according to claim 1 or 2, characterized in that, The end of the gas-producing connecting rod far from the operating mechanism passes through the baffle and the opening and extends towards the arc extinguishing chamber.

4. The power device according to any one of claims 1 to 3, characterized in that, The moving contact assembly further includes a housing. The operating mechanism is fixedly connected to the housing, and the housing is rotatably connected to the housing; One end of the gas-producing connecting rod close to the operating mechanism is located within the housing, and the other end extends out of the housing; The baffle is located on the surface of the housing close to the arc extinguishing chamber; When the operating mechanism drives the housing to rotate relative to the housing, the housing pushes the gas-producing connecting rod to rotate relative to the housing to drive the moving contact to rotate.

5. The power device according to claim 4, wherein The rotation center of the housing relative to the housing coincides with the rotation center of the gas-producing connecting rod relative to the housing.

6. The power device according to claim 4 or 5, characterized in that, The moving contact includes a rotating rod and a contact. The rotating rod is relatively fixed to the gas-producing connecting rod, and the contact is located at one end of the rotating rod close to the arc extinguishing chamber; The moving contact assembly further includes a spring located within the housing. One end of the spring is fixedly connected to the housing, and the other end is fixedly connected to the rotating rod. The spring is configured to apply a tensile force to the moving contact when the circuit breaker is closed, so as to maintain contact between the moving contact and the static contact.

7. The power device according to claim 6, characterized in that, One end of the contact near the static contact is configured to contact or separate from the static contact. An arcing contact is provided at the end of the contact far from the static contact. The arcing contact has an arcing height in a direction away from the static contact and is configured to guide the arc to concentrate on the arcing contact when the moving contact and the static contact are disconnected.

8. The power device according to claim 7, characterized in that, The moving contact assembly includes a plurality of the moving contacts, and the plurality of moving contacts are sequentially arranged along the width direction of the circuit breaker and are relatively fixed to the gas-producing connecting rod. Among the plurality of moving contacts, the arcing height of the arcing contact of one of the moving contacts is greater than that of the arcing contacts of the other moving contacts.

9. The power device according to any one of claims 1 to 8, characterized in that, The moving contact and the gas-producing connecting rod are rotatably connected to the outer housing through a rotating shaft.

10. The power device according to any one of claims 1 to 9, characterized in that, The current-carrying component further includes a wire and two copper bars oppositely arranged along the height direction of the circuit breaker. The two copper bars extend along the depth direction of the circuit breaker respectively. One end of the wire is connected to one of the two copper bars, and the other end is connected to the moving contact. Along the depth direction of the circuit breaker, the wire is located on the side of the rotation center of the moving contact relative to the outer housing closer to the arc extinguishing chamber. The other one of the two copper bars is connected to the static contact.

11. The power device according to claim 10, characterized in that, The circuit breaker further includes a trip control component. Along the height direction of the circuit breaker, the trip control component and the wire are arranged on the same side of the moving contact assembly, or the trip control component and the wire are respectively arranged on both sides of the moving contact assembly. The trip control component is in transmission connection with the operating mechanism. The trip control component is configured to control the operating mechanism to drive the moving contact assembly to move when a fault current is detected, so as to separate the moving contact from the static contact.

12. The power equipment according to any one of claims 1 to 11, characterized in that, The power equipment further includes an arc extinguishing module. The arc extinguishing module is located on the side of the arc extinguishing chamber away from the operating mechanism along the depth direction of the circuit breaker. The arc extinguishing module is configured to purify the gas ejected from the arc extinguishing chamber. The power equipment further includes a circuit board located within the cabinet. The circuit board and the plurality of circuit breakers are sequentially arranged along the depth direction of the cabinet, and the circuit board is arranged close to the arc extinguishing module.

13. The power equipment according to claim 12, characterized in that, There is an arc ejection opening between the arc extinguishing module and the arc extinguishing chamber. The arc ejection opening communicates the arc extinguishing chamber and the arc extinguishing module, and the arc ejection opening is arranged close to the side of the arc extinguishing chamber away from the static contact along the height direction of the circuit breaker. The gas-producing connecting rod is configured to form a gas blow towards the arc ejection opening.

14. A circuit breaker, characterized in that, The circuit breaker includes an outer housing, an operating handle, an operating mechanism, a current-carrying component, and an arc extinguishing chamber, wherein: The operating handle is connected to the operating mechanism; the current-carrying component includes a moving contact component and a static contact; at least a part of the operating handle close to the operating mechanism, the operating mechanism, the moving contact component and the arc extinguishing chamber are sequentially arranged in the housing along the depth direction of the circuit breaker; A partition is provided in the housing, the partition is located between the operating mechanism and the arc extinguishing chamber and extends along the height direction of the circuit breaker, the partition is used to separate the operating mechanism and the arc extinguishing chamber, and the partition is provided with an opening; The moving contact component can rotate relative to the housing; the moving contact component includes a moving contact and a gas-producing connecting rod, the moving contact is relatively fixed to the gas-producing connecting rod; the gas-producing connecting rod is used to form gas blowing towards the arc extinguishing chamber; one end of the connecting rod close to the operating mechanism is rotatably connected to the housing, and a baffle is provided at the end of the gas-producing connecting rod away from the operating mechanism; The static contact is located on the side of the moving contact component away from the operating mechanism along the depth direction of the circuit breaker; The operating mechanism is connected to the moving contact component, and the operating handle is used to control the operating mechanism to drive the gas-producing connecting rod of the moving contact component to rotate relative to the housing, so that the moving contact contacts or separates from the static contact; the baffle is located on the side of the opening close to the operating mechanism, and the baffle is used to always cover the opening during the process of the operating mechanism driving the gas-producing connecting rod to rotate relative to the housing; The arc extinguishing chamber is used to eliminate the arc generated when the moving contact separates from the static contact.

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