Circuit breaker and power apparatus

Abstract

The present application provides a circuit breaker and a power apparatus. The circuit breaker comprises a housing, an operating handle, an operating mechanism, a through-current assembly, an arc extinguishing chamber, and an arc extinction module. The operating handle, the operating mechanism, the through-current assembly, the arc extinguishing chamber, and the arc extinction module are sequentially arranged in the depth direction of the circuit breaker. The through-current 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 a gas production connecting rod of the moving contact assembly to rotate, so that a moving contact is in contact with or separated from the static contact. The arc extinguishing chamber is used for extinguishing an electric arc generated when the moving contact is separated from the static contact. The arc extinction module is used for purifying gas ejected from the arc extinguishing chamber. In the circuit breaker of the present application, the mechanisms are arranged in the depth direction of the circuit breaker, and the size in the height direction is relatively small, so that the number of circuit breakers that can be arranged in a cabinet is increased. When the moving contact is separated from the static contact, the gas production connecting rod is used for forming gas blowing, so that the electric arc passes through the arc extinguishing chamber in the depth direction to achieve arc extinguishing, so as to improve 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 202311871294.0 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 and a plurality of circuit breakers and a plurality of power modules located in the cabinet, wherein the plurality of circuit breakers are sequentially arranged in the cabinet along the width direction of the cabinet, 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-passing assembly, an arc extinguishing chamber, and an arc extinguishing module. The operating handle is connected to the operating mechanism, and the current-passing 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, the arc extinguishing chamber, and the arc extinguishing module are sequentially arranged in the housing along the depth direction of the circuit breaker, and 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 moving contact assembly includes a gas-generating connecting rod and a moving contact, the gas-generating connecting rod is rotatably connected to the housing, and the moving contact is relatively fixed to the gas-generating connecting rod. 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-generating 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 arc extinguishing chamber is used to eliminate the arc generated when the moving contact separates from the static contact. The arc extinguishing chamber includes a plurality of arc extinguishing plates arranged in sequence along the height direction of the circuit breaker. The static contact is located on one side of the above-mentioned plurality of arc extinguishing plates along the height direction of the circuit breaker. The movement trajectory of the moving contact extends from the static contact to the other side of the above-mentioned plurality of arc extinguishing plates along the height direction of the circuit breaker. The arc extinguishing module is used to purify the gas ejected from the arc extinguishing chamber. An arc spray port is provided between the arc extinguishing module and the arc extinguishing chamber, the arc spray port connects the arc extinguishing chamber and the arc extinguishing module, and the arc spray port is provided close to the other side of the arc extinguishing plate. The gas-generating connecting rod is used to form a gas blow toward the arc spray port.

[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 electric 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 laid out 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. 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 to the arc through the arc nozzle. Under the action of the air blow, the arc passes through multiple arc extinguishing plates, and in the process reduces the temperature of the arc, so that the arc energy is fully cooled, and at the same time generates a higher arc pressure to extinguish the arc, thereby improving the arc extinguishing safety of the circuit breaker.

[0012] In one possible implementation, 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. A baffle is provided on one end of the gas-producing connecting rod close to the arc extinguishing chamber, and one end of the connecting rod is provided close to the operating mechanism and is rotatably connected to the housing. The baffle is located on the side of the opening close to the operating mechanism. The baffle is used to always cover the opening during the process in which the operating mechanism drives the gas-producing connecting rod to rotate relative to the housing. In this implementation, the side of the arc extinguishing chamber close to the operating mechanism is a closed space, so that the arc extinguishing chamber has only one outlet, namely the arc spraying port. Therefore, when the moving contact is separated from the static contact, the direction of the gas blow generated by the gas-producing connecting rod is from the side of the arc extinguishing chamber close to the operating mechanism toward the side of the arc extinguishing chamber close to the arc extinguishing module, and finally flows out from the arc spraying port.

[0013] When the arc extinguishing chamber is specifically configured, the aforementioned multiple arc extinguishing plates are arranged in an arc shape. Along the height of the circuit breaker, the arc extinguishing plates on the side closest to the static contact are positioned close to the arc extinguishing module, and the arc extinguishing plates on the side away from the static contact are positioned close to the operating mechanism. During the rotation of the moving contact relative to the housing to contact or separate from the static contact, the moving contact's motion trajectory is arc-shaped. The arrangement of the aforementioned multiple arc extinguishing plates matches the moving contact's motion trajectory, ensuring that the moving contact always maintains a set distance from the arc extinguishing plates during movement. This facilitates the arc's passage through the arc extinguishing plates under the action of air blowing, achieving a better arc extinguishing effect.

[0014] When specifically arranging the plurality of arc-extinguishing plates, in one possible implementation, the plurality of arc-extinguishing plates are arranged in parallel. In another possible implementation, the spacing between at least two arc-extinguishing plates near the arc outlet on a side near the operating mechanism is smaller than the spacing between the at least two arc-extinguishing plates on a side near the arc outlet.

[0015] In one possible implementation, the arc extinguishing chamber further includes two gas-generating plates arranged opposite each other along the width of the circuit breaker. The gas-generating plates extend along the height of the circuit breaker and are used to generate a gas blow toward the arc outlet. The moving contact's motion trajectory is located between the two gas-generating plates. When the moving contact rotates relative to the housing, the moving contact is always located between the two gas-generating plates. As a result, during the separation of the moving contact from the stationary contact, the gas-generating plates on both sides of the moving contact generate a gas blow due to the erosion of the arc. This ensures that the arc generated during the separation of the moving contact from the stationary contact is always blown toward the arc-extinguishing plates, thereby extinguishing the arc in a timely manner.

[0016] In a possible implementation, the arc extinguishing chamber further includes two support plates arranged opposite to each other along the width direction of the circuit breaker, and the plurality of arc extinguishing pieces are respectively connected between the two support plates, and the two support plates are used to support and fix the plurality of arc extinguishing pieces.

[0017] In one possible implementation, the arc extinguishing chamber further includes two arc-starting plates. These plates are positioned opposite each other along the height of the circuit breaker, on either side of the plurality of arc-extinguishing plates. One arc-starting plate is used to direct the arc around the stationary contact toward the arc-extinguishing plates, while the other arc-starting plate is used to direct the arc around the moving contact toward the arc-extinguishing plates. This ensures that after an arc is generated, it is quickly directed to the arc-extinguishing plates for extinguishing.

[0018] In one possible implementation, the two arc-striking plates may specifically include a first arc-striking plate and a second arc-striking plate. The first arc-striking plate is disposed away from the static contact and is L-shaped. Specifically, the first arc-striking plate includes a first arc-striking portion and a second arc-striking portion disposed vertically. The first arc-striking portion and the second arc-striking plate are disposed opposite each other on either side of the plurality of arc-extinguishing plates, the second arc-striking plate being disposed close to the static contact, the second arc-striking portion extending along the height direction of the circuit breaker and being disposed close to the operating mechanism. In this way, the first arc-striking plate can be disposed close to the motion trajectory of the moving contact, and the second arc-striking plate can be disposed close to the static contact, so as to guide the arc in a timely manner.

[0019] In one possible implementation, an arc striking notch is provided on one side of each arc extinguishing plate close to the operating mechanism, and the arc striking notches of two adjacent arc extinguishing plates are not overlapped in their projections along the height direction of the circuit breaker, so that the arc path increases when passing through the arc striking notches of two adjacent arc extinguishing plates, thereby increasing the length of the arc and making the arc fully contact with the arc extinguishing plate, which is conducive to accelerating the cooling and extinction of the arc.

[0020] In one possible implementation, the flow assembly further includes a first gas generating plate. A static contact is disposed on a surface of the first gas generating plate near the arc extinguishing plates. The first gas generating plate is configured to generate a gas blow toward the arc ejection port. Along the height of the circuit breaker, the static contact is positioned between the first gas generating plate and the arc extinguishing plates, enabling the gas blow generated by the first gas generating plate to blow the arc surrounding the static contact directly toward the arc extinguishing plates.

[0021] In one possible implementation, the flow assembly further includes a second gas generating plate. The second gas generating plate is located on a surface of the first gas generating plate near the arc extinguishing plates and, along the depth direction of the circuit breaker, on the side of the static contact near the operating mechanism. The second gas generating plate is configured to generate gas blowing toward the arc ejection port. Thus, the first and second gas generating plates can generate multiple gas blowing patterns around the static contact, enhancing the gas generation and arc blowing effect.

[0022] In one possible implementation, the power equipment further includes a circuit board located within a cabinet. The circuit board and multiple circuit breakers are sequentially arranged along the depth of the cabinet, with the circuit board positioned adjacent to an arc suppression module. The arc suppression module absorbs charged ions ejected from the arc extinguishing chamber, ensuring that the gas ejected from the circuit breaker through the arc suppression module is completely arc-free, thereby preventing any adverse effects on the power equipment's circuit board.

[0023] In one possible implementation, the arc-extinguishing module includes a module housing and a plurality of arc-extinguishing blades located within the module housing. The specific distribution of the plurality of arc-extinguishing blades is not limited. For example, the plurality of arc-extinguishing blades may be arranged in parallel along the depth direction of the circuit breaker, or the plurality of arc-extinguishing blades may be arranged in parallel along the height direction of the circuit breaker, or the plurality of arc-extinguishing blades may be arranged in parallel along the width direction of the circuit breaker, or at least two of the plurality of arc-extinguishing blades may be arranged at an angle.

[0024] In one possible implementation, multiple arc-extinguishing plates are arranged in parallel along the depth direction of the circuit breaker. Each arc-extinguishing plate is provided with multiple holes, and the holes of two adjacent arc-extinguishing plates do not overlap along the depth direction of the circuit breaker, so as to improve the arc-extinguishing module's ability to absorb ion wandering.

[0025] The arc-extinguishing module is a standalone module. It is connected to the housing, and the connection includes threaded connection, snap connection, riveting, or bonding. In one possible implementation, the arc-extinguishing module is snap-fitted to the housing. Specifically, the housing has a slot inside, and the outer wall of the arc-extinguishing module has a snap-fitting protrusion. The snap-fitting protrusion is received in the slot, or it can be fastened to the outer wall by other means.

[0026] In a second aspect, the present application provides a circuit breaker. The circuit breaker includes a housing, an operating handle, an operating mechanism, a current-carrying assembly, an arc extinguishing chamber, and an arc extinguishing module. The operating handle is connected to the operating mechanism, and the current-carrying assembly includes a movable contact assembly and a stationary contact. The operating handle, at least the portion of the operating handle proximate the operating mechanism, the operating mechanism, the movable contact assembly, the arc extinguishing chamber, and the arc extinguishing module are sequentially arranged within the housing along the depth direction of the circuit breaker, with the stationary contact located on the side of the movable contact assembly away from the operating mechanism along the depth direction of the circuit breaker. The movable contact assembly includes a gas-generating connecting rod and a movable contact. The gas-generating connecting rod is rotatably connected to the housing, and the movable contact is fixed relative to the gas-generating connecting rod. The operating mechanism is connected to the movable contact assembly, and the operating handle is used to control the operating mechanism to rotate the gas-generating connecting rod of the movable contact assembly relative to the housing, thereby bringing the movable contact into contact with or separating the stationary contact. The arc extinguishing chamber is used to extinguish arcs generated when the movable and stationary contacts separate. The arc extinguishing chamber includes multiple arc-extinguishing plates arranged sequentially along the height direction of the circuit breaker. The stationary contact is located on one side of the multiple arc-extinguishing plates along the height direction of the circuit breaker. The moving contact's trajectory extends along the height of the circuit breaker from the stationary contact to the other side of the multiple arc-extinguishing plates. The arc-extinguishing module is used to purify the gas ejected from the arc-extinguishing chamber. An arc-spraying port is located between the arc-extinguishing module and the arc-extinguishing chamber. The arc-spraying port connects the arc-extinguishing chamber and the arc-extinguishing module and is located near the other side of the arc-extinguishing plates. A gas-generating connecting rod is used to generate a gas blow toward the arc-spraying port.

[0027] 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 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 laid out 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. In the fourth layer (arc-extinguishing layer), when the moving and stationary contacts separate, an arc forms between them. The arc erodes the gas-generating connecting rod, producing a large amount of gas. This increases the pressure around the connecting rod and creates a pressure differential with the outside of the circuit breaker, resulting in a gas blow to the arc through the arc nozzle. This gas blow forces the arc through multiple arc-extinguishing plates, lowering its temperature and cooling its energy. This process also generates a high arc voltage to extinguish the arc, thereby improving the circuit breaker's arc-extinguishing safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic diagram of an application scenario of a circuit breaker provided in an embodiment of the present application;

[0029] FIG2 is a schematic diagram of an electric power device provided in an embodiment of the present application;

[0030] FIG3 is a schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0031] FIG4 is another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0032] FIG5 is a cross-sectional view of the circuit breaker in FIG3 along the AA direction;

[0033] FIG6 is another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0034] FIG7 is a schematic diagram of a static contact assembly provided in an embodiment of the present application;

[0035] FIG8 is another schematic diagram of a stationary contact assembly provided in an embodiment of the present application;

[0036] FIG9 is another schematic diagram of a stationary contact assembly provided in an embodiment of the present application;

[0037] FIG10 is a schematic diagram of an arc extinguishing chamber provided in an embodiment of the present application;

[0038] FIG11 is a cross-sectional view of the arc extinguishing chamber of FIG10 along the BB direction;

[0039] FIG12 is another cross-sectional view of the arc extinguishing chamber of FIG10 along the BB direction;

[0040] FIG13 is a schematic diagram of an arc suppression module provided in an embodiment of the present application;

[0041] FIG14 is another schematic diagram of an arc suppression module provided in an embodiment of the present application;

[0042] FIG15 is another schematic diagram of an arc suppression module provided in an embodiment of the present application;

[0043] FIG16 is another schematic diagram of the arc extinguishing module provided in an embodiment of the present application.

[0044] Reference numerals: 01 - power supply and distribution system 02 - power module 10 - power equipment 11 - cabinet 20 - circuit breaker 21 - housing 22 - operating handle 23 - operating mechanism 24 - current flow assembly 25 - arc extinguishing chamber 26 - arc extinguishing module 27 - partition 110 - user operation surface 210 - circuit breaker operation surface 211 - limiting protrusion 241 - moving contact assembly 242 - static contact assembly 243 - wire 244 - first copper bar 245 - second copper bar 246 - first joint 247 - second Second joint 251 - arc extinguishing plate 252 - first gas producing plate 253 - second gas producing plate 254 - first support plate 255 - second support plate 256 - first arc striking plate 257 - second arc striking plate 261 - module housing 262 - arc extinguishing plate 2411 - gas producing connecting rod 2412 - moving contact 2413 - baffle 2421 - static contact 2422 - first gas producing plate 2423 - second gas producing plate 2511 - arc striking notch 2611 - snap-on protrusion 2571 - gas producing port DETAILED DESCRIPTION

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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 the 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.

[0049] The above-mentioned power supply system may specifically include a plurality of power devices 10. Figure 2 is a schematic diagram of the power equipment provided in an embodiment of the present application. As shown in Figure 2, 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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, wherein Figure 4 shows a cross-sectional view of the circuit breaker shown in Figure 3 along the AA direction. 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, an arc extinguishing chamber 25, and an arc extinguishing module 26. 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 assembly 242. In one embodiment, the end of the operating handle 22 distal to the operating mechanism 23 can extend out of 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, the arc extinguishing chamber 25, and the arc extinguishing module 26 are sequentially arranged within the housing 21 along the depth direction d of the circuit breaker 20. The stationary contact assembly 242 includes a stationary contact 2421. 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 the operating mechanism 23 is transmission-connected to the operating handle 22. 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 rotationally connected to the housing 21, and the moving contact 2412 is relatively fixed to the gas-generating connecting rod 2411. The operating mechanism 23 is connected to the moving contact assembly 241, and the operating handle 22 is used to control the operating mechanism 23 to drive the gas-generating connecting rod 2411 of the moving contact assembly 241 to rotate, so that the moving contact 2412 rotates with the gas-generating connecting rod 2411, thereby causing the moving contact 2412 to contact or separate from the static contact 2421. The arc extinguishing chamber 25 is used to extinguish the arc generated when the moving contact 2412 separates from the static contact 2421. The arc extinguishing chamber 25 includes a plurality of arc extinguishing pieces 251 sequentially arranged along the height direction h of the circuit breaker 20. The static contact 2421 is located on one side of the plurality of arc extinguishing pieces 251 along the height direction h of the circuit breaker 20.The motion trajectory of the moving contact 2412 extends along the height direction h of the circuit breaker 20 from the stationary contact 2421 to the other side of the plurality of arc-extinguishing plates 251. The arc-extinguishing module 26 is used to purify the gas ejected from the arc-extinguishing chamber 25. An arc-spraying port is provided between the arc-extinguishing module 26 and the arc-extinguishing chamber 25. The arc-spraying port connects the arc-extinguishing chamber 25 and the arc-extinguishing module 26 and is located near the other side of the arc-extinguishing plates 251. The gas-generating connecting rod 2411 is used to generate a gas blow toward the arc-spraying port.

[0055] In this application, the side of the operating handle 22 extending from 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, arc extinguishing chamber 25, and arc extinguishing module 26 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 moving contact 2412 to separate from or contact the static contact 2421. When the moving contact 2412 is in contact with the static contact 2421, the circuit breaker 20 is in the closed state; when the moving contact 2412 is separated 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 moving contact assembly 241, the arc extinguishing chamber 25, and the arc extinguishing module 26 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 part of the flow assembly 24 is located on the third layer (flow layer), the arc extinguishing chamber 25 is located on the fourth layer (arc extinguishing layer), and the arc extinguishing module 26 is located on the fifth layer (arc extinguishing layer). In addition, in the power equipment of the present application, a large amount of gas will be generated 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 from the position to the low-pressure environment. 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 2412 and the stationary contact 2421 separate, an arc is generated between them. The arc erodes the gas-generating connecting rod 2411, producing a large amount of gas. This increases the pressure around the gas-generating connecting rod 2411 and creates a pressure differential with the outside of the circuit breaker 20. This creates a gas blow to the arc through the arc nozzle. This gas blow causes the arc to pass through the multiple arc-extinguishing plates 251, reducing its temperature in the process and fully cooling the arc energy, while generating a higher arc voltage.When the arc voltage is greater than the current-carrying voltage of the circuit breaker 20 , the voltage between the moving contact 2412 and the static contact 2421 cannot reach the arc voltage to support the arc, so that the arc is extinguished, thereby improving the arc extinguishing safety of the circuit breaker 20 .

[0056] Figure 5 is a 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 27 is provided within the housing 21. The partition 27 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 27 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 always covers the opening. Specifically, a baffle 2413 is provided on the end of the gas generating connecting rod 2411 closest to the arc extinguishing chamber 25. The baffle 2413 is located on the side of the opening closest to the operating mechanism 23. As the operating mechanism 23 drives the gas generating connecting rod 2411 to rotate relative to the housing 21, the baffle 2413 always covers the opening. This baffle 2413 isolates the operating mechanism 23 from the arc extinguishing chamber 25, ensuring that the arc ejection port serves as the sole outlet from the arc extinguishing chamber 25. Therefore, when the moving contact 2412 is separated from the static contact 2421, the end of the gas-producing connecting rod 2411 close to the arc extinguishing chamber 25 is eroded by the arc and produces gas blowing, and the gas-producing connecting rod 2411 moves with the moving contact 2412, and can keep generating gas blowing around the moving contact 2412, so as to continuously blow the arc toward the arc extinguishing chamber 25 to extinguish the arc when the moving contact 2412 is separated from the static contact 2421, thereby protecting the operating mechanism 23 from arc intrusion.

[0057] Figure 6 is another schematic diagram of a circuit breaker according to an embodiment of the present application, and Figure 7 is a schematic diagram of a static contact assembly according to an embodiment of the present application. As shown in Figures 6 and 7, the static contact assembly 242 further includes a first gas-generating plate 2422. The first gas-generating plate 2422 is disposed on the copper busbar of the flow assembly 24. The static contact 2421 is disposed on a side surface of the first gas-generating plate 2422 near the arc-extinguishing plate 251. The first gas-generating plate 2422 is configured to generate a gas blow toward the arc-expulsion port. Along the height direction h of the circuit breaker 20, the static contact 2421 is positioned between the first gas-generating plate 2422 and the plurality of arc-extinguishing plates 251. This allows the gas blow generated by the first gas-generating plate 2422 to blow the arc surrounding the static contact 2421 directly toward the arc-extinguishing plates 251. This directs the arc from the lower right corner of the arc-extinguishing chamber 25 in Figure 12 through the arc-extinguishing plates 251 to the upper left corner of the arc-extinguishing chamber 25, where it then enters the arc-extinguishing module 26 through the arc-expulsion port.

[0058] Figure 8 is another schematic diagram of a static contact assembly provided in an embodiment of the present application, and Figure 9 is another schematic diagram of a static contact assembly provided in an embodiment of the present application. As shown in Figures 8 and 9, 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 plate 251. 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 is separated from the static contact 2421, air blowing is generated below and on the side 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 piece 251 to extinguish the arc.

[0059] 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. 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 moving contact 2412.

[0060] FIG10 is a schematic diagram of an arc extinguishing chamber provided in an embodiment of the present application. As shown in FIG10 , within the arc extinguishing chamber 25, multiple arc extinguishing plates 251 may be arranged in an arc shape. Along the height direction h of the circuit breaker 20, the arc extinguishing plates 251 on the side closest to the static contact 2421 are positioned near the arc extinguishing module 26, and the arc extinguishing plates 251 on the side away from the static contact 2421 are positioned near the operating mechanism 23. During the rotation of the movable contact 2412 relative to the housing 21 to contact or separate from the static contact 2421, the movable contact 2412 follows an arc-shaped trajectory. The arrangement of the multiple arc extinguishing plates 251 matches the trajectory of the movable contact 2412, ensuring that the movable contact 2412 always maintains a set distance from the arc extinguishing plates 251 during movement. This facilitates the passage of the arc through the multiple arc extinguishing plates 251 under the action of air blowing, achieving a better arc extinguishing effect.

[0061] In the arc extinguishing chamber 25 of the present application, the arrangement of the multiple arc extinguishing plates 251 is not limited. FIG11 is a cross-sectional view of the arc extinguishing chamber of FIG10 along the BB direction. As shown in FIG11 , in one embodiment, the multiple arc extinguishing plates 251 can be arranged in parallel along the height direction h of the circuit breaker 20. FIG12 is another cross-sectional view of the arc extinguishing chamber of FIG10 along the BB direction. As shown in FIG12 , in another embodiment, the multiple arc extinguishing plates 251 include at least two arc extinguishing plates 251 near the arc ejection port, and the spacing between the two arc extinguishing plates 251 on the side near the operating mechanism 23 is smaller than the spacing on the side near the arc ejection port.

[0062] As shown in Figure 10, the arc extinguishing chamber 25 also includes two gas generating fins: a first gas generating fin 252 and a second gas generating fin 253. The first and second gas generating fins 252, 253 are arranged opposite each other along the width direction w of the circuit breaker 20. The first and second gas generating fins 252, 253 extend along the height direction h of the circuit breaker 20, respectively, and are used to generate gas blows toward the arc ejection port. The movement trajectory of the movable contact 2412 lies between these two gas generating fins. When the movable contact 2412 rotates relative to the housing 21, it remains positioned between these two gas generating fins. Therefore, during the separation process between the movable contact 2412 and the stationary contact 2421, the first and second gas generating fins 252, 253 generate gas blows due to the erosion of the arc. This ensures that the arc generated by the movable contact 2412 during separation is continuously blown toward the arc extinguishing fins 251, thereby extinguishing the arc.

[0063] In one embodiment, the arc extinguishing chamber 25 further includes two support plates, namely a first support plate 254 and a second support plate 255. The first support plate 254 and the second support plate 255 are disposed opposite each other along the width direction w of the circuit breaker 20, and the plurality of arc extinguishing pieces 251 are respectively connected between the two support plates, and the two support plates are used to support and fix the plurality of arc extinguishing pieces 251.

[0064] The arc extinguishing chamber 25 also includes two arc-strike plates. These plates are positioned opposite each other along the height direction h of the circuit breaker 20, on either side of the plurality of arc-extinguishing plates 251. One arc-strike plate is used to direct the arc around the static contact 2421 toward the arc-extinguishing plates 251, while the other arc-strike plate is used to direct the arc around the movable contact 2412 toward the arc-extinguishing plates 251. This ensures that the arc is quickly directed to the arc-extinguishing plates 251 for extinguishing after it is generated. The two arc-strike plates may specifically include a first arc-strike plate 256 and a second arc-strike plate 257. Specifically, the first arc-strike plate 256 is positioned away from the static contact 2421 and is L-shaped. The first arc-strike plate 256 includes a first arc-strike portion and a second arc-strike portion disposed perpendicularly. The first arc-strike portion and the second arc-strike plate 257 are positioned opposite each other on either side of the plurality of arc-extinguishing plates 251. The second arc-strike plate 257 is positioned closer to the static contact 2421, with the second arc-strike portion extending along the height direction h of the circuit breaker 20 and positioned near the operating mechanism 23. In this way, the first arc-striking plate 256 can be positioned near the motion trajectory of the moving contact 2412, and the second arc-striking plate 257 can be positioned near the stationary contact 2421, thereby enabling timely arc guidance. In one embodiment, the second arc-striking plate 257 can be positioned on a side surface of the first gas generating plate 2422 near the arc extinguishing plate 251, and the second arc-striking plate 257 is provided with a gas generating port 2571, so that the gas generated by the first gas generating plate 2422 is blown toward the arc extinguishing plate 251 through the gas generating port 2571.

[0065] Please continue to refer to Figure 10. An arc-striking notch 2511 is provided on the side of each arc-extinguishing piece 251 close to the moving contact assembly 241. The arc-striking notches 2511 of two adjacent arc-extinguishing pieces 251 do not overlap in the projection along the height direction h of the circuit breaker 20, so that the arc path is extended when passing through the arc-striking notches 2511 of two adjacent arc-extinguishing pieces 251, thereby increasing the length of the arc and making the arc fully contact with the arc-extinguishing piece 251, which is conducive to accelerating the cooling and extinction of the arc.

[0066] In one embodiment, the power equipment 10 further includes a circuit board located within the cabinet 11. The circuit board and the multiple circuit breakers 20 are sequentially arranged along the depth direction d of the cabinet 11, and the circuit board is positioned adjacent to the arc extinguishing module 26. The arc extinguishing 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 extinguishing module 26 is completely arc-free, thereby preventing any adverse effects on the circuit board of the power equipment 10.

[0067] FIG13 is a schematic diagram of an arc extinguishing module provided in an embodiment of the present application, and FIG14 is another schematic diagram of an arc extinguishing module provided in an embodiment of the present application. As shown in FIG13 and FIG14 , the arc extinguishing module 26 includes a module housing 261 and a plurality of arc extinguishing sheets 262 located in the module housing 261. The specific distribution of the aforementioned plurality of arc extinguishing sheets 262 is not limited. For example, the plurality of arc extinguishing sheets 262 can be arranged in sequence along the depth direction d of the circuit breaker 20, or the plurality of arc extinguishing sheets 262 can be arranged in sequence along the height direction h of the circuit breaker 20, or the plurality of arc extinguishing sheets 262 can be arranged in sequence along the width direction w of the circuit breaker 20. Among them, two adjacent arc extinguishing sheets 262 can be arranged in parallel, or two adjacent arc extinguishing sheets 262 can also be arranged at an angle. In addition, when two adjacent arc extinguishing sheets 262 are arranged in parallel, the spacing distance between any two adjacent arc extinguishing sheets 262 can be equal, that is, a plurality of arc extinguishing sheets 262 are arranged at equal intervals.

[0068] In one embodiment, the plurality of arc-extinguishing plates 262 are arranged parallel to the depth direction d of the circuit breaker 20. In other words, the plurality of arc-extinguishing plates 262 are arranged perpendicular to the depth direction d of the circuit breaker 20. Each arc-extinguishing plate 262 is provided with multiple holes, and the holes of two adjacent arc-extinguishing plates 262 do not overlap when projected along the depth direction d of the circuit breaker 20, thereby improving the arc-extinguishing module 26's ability to absorb charged ions. Furthermore, among the plurality of arc-extinguishing plates 262, the diameter of the hole of the arc-extinguishing plate 262 farthest from the operating handle 22 can be smaller than the diameters of the holes of the other arc-extinguishing plates 262, thereby further improving the safety of the gas ejected from the arc-extinguishing module 26.

[0069] Figure 15 is another schematic diagram of an arc-extinguishing module provided in an embodiment of the present application. As shown in Figure 15 , in another embodiment, the plurality of arc-extinguishing blades 262 are arranged parallel to the height direction h of the circuit breaker 20. In other words, the plurality of arc-extinguishing blades 262 are arranged perpendicular to the height direction h of the circuit breaker. In this embodiment, the arc-extinguishing blades 262 may be provided with the aforementioned holes. Alternatively, the arc-extinguishing blades 2622 may be made of a material with an adsorption function without holes.

[0070] In the embodiment of the present application, the type of arc-extinguishing sheet 262 is not limited. For example, the arc-extinguishing sheet 262 can be a filter, a flame-extinguishing sheet, a gas-generating sheet, or a woven mesh. In this embodiment, the multiple arc-extinguishing sheets 262 in the arc-extinguishing module 26 can be of the same type, or the multiple arc-extinguishing sheets 262 in the arc-extinguishing module 26 can be of at least two different types. Furthermore, the multiple arc-extinguishing sheets 262 can be made of either metal or plastic.

[0071] The above-mentioned arc extinguishing module 26 is an independent module, and the arc extinguishing module 26 can be connected to the housing 21 by means of threaded connection, welding, riveting, clamping or bonding. As shown in Figure 14, in one embodiment, a card slot is provided inside the housing 21, and a clamping protrusion 2611 is provided on the outer wall of the module housing 261, and the clamping protrusion 2611 is accommodated in the card slot. In another embodiment, the outer wall of the module housing 261 can be a flat surface, and the housing 21 and the module housing 261 are fixedly connected by inserting bolts from the outside of the housing 21. Figure 16 is another schematic diagram of the arc extinguishing module provided in an embodiment of the present application. As shown in Figure 16, in another embodiment, a limiting protrusion 211 is provided on the inner wall of the housing 21. When the arc extinguishing module 26 is installed in the housing 21, the limiting protrusion 211 can limit the module housing 261.

[0072] 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. A power 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, an arc extinguishing chamber, and an arc suppression module; the operating handle is connected to the operating mechanism, and the current-carrying component includes a moving contact assembly and a static contact; at least a part of the operating handle close to the operating mechanism, the operating mechanism, the moving contact assembly, the arc extinguishing chamber, and the arc suppression module are sequentially arranged within the housing along the depth direction of the circuit breaker, and the static contact is located on the side away from the operating mechanism of the moving contact assembly along the depth direction of the circuit breaker; The moving contact assembly includes a gas-producing connecting rod and a moving contact, the gas-producing connecting rod is rotatably connected to the housing, and the moving contact is relatively fixed to the gas-producing connecting rod; 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 contacts or separates from the static contact; The arc extinguishing chamber is used to eliminate the arc generated when the moving contact separates from the static contact; the arc extinguishing chamber includes a plurality of arc extinguishing plates sequentially arranged along the height direction of the circuit breaker; the static contact is located on one side of the plurality of arc extinguishing plates along the height direction of the circuit breaker; the movement trajectory of the moving contact extends from the static contact to the other side of the plurality of arc extinguishing plates along the height direction of the circuit breaker; The arc suppression module is used to purify the gas ejected from the arc extinguishing chamber; there is an arc ejection port between the arc suppression module and the arc extinguishing chamber, the arc ejection port communicates with the arc extinguishing chamber and the arc suppression module, and the arc ejection port is arranged close to the other side of the arc extinguishing plate; the gas-producing connecting rod is used to form a gas blast towards the arc ejection port.

2. The power device according to claim 1, characterized in that 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; A baffle is provided at one end of the gas-producing connecting rod close to the arc extinguishing chamber, and one end of the connecting rod is arranged close to the operating mechanism and is rotatably connected to the housing; the baffle is located on the side of the opening close to the operating mechanism; 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.

3. The power device according to claim 1 or 2, characterized in that, The plurality of arc extinguishing plates are arranged in an arc shape; along the height direction of the circuit breaker, the arc extinguishing plate on the side of the plurality of arc extinguishing plates close to the static contact is arranged close to the arc suppression module, and the arc extinguishing plate on the side of the plurality of arc extinguishing plates away from the static contact is arranged close to the operating mechanism.

4. The power device according to any one of claims 1 to 3, characterized in that, The plurality of arc extinguishing plates are arranged in parallel; or, Among the multiple arc extinguishing plates, the spacing between at least two arc extinguishing plates close to the arc ejection port on the side close to the operating mechanism is smaller than the spacing between the at least two arc extinguishing plates on the side close to the arc ejection port.

5. The power equipment according to any one of claims 1 to 4, characterized in that, The arc extinguishing chamber further includes two gas generating plates oppositely arranged along the width direction of the circuit breaker. The gas generating plates extend along the height direction of the circuit breaker, and the two gas generating plates are used to form gas blowing towards the arc ejection port. The movement trajectory of the moving contact is located between the two gas generating plates.

6. The power device according to any one of claims 1 to 5, characterized in that, The arc extinguishing chamber further includes two arc guiding plates, and the two arc guiding plates are oppositely arranged along the height direction of the circuit breaker on both sides of the multiple arc extinguishing plates.

7. The power device according to claim 6, characterized in that, The two arc guiding plates include a first arc guiding plate and a second arc guiding plate. The first arc guiding plate is arranged away from the static contact and is L-shaped. The first arc guiding plate includes a first arc guiding portion and a second arc guiding portion arranged vertically. The first arc guiding portion and the second arc guiding plate are oppositely arranged on both sides of the multiple arc extinguishing plates. The second arc guiding plate is arranged close to the static contact, and the second arc guiding portion extends along the height direction of the circuit breaker and is arranged close to the operating mechanism.

8. The power device according to any one of claims 1 to 7, characterized in that, An arc guiding notch is provided on one side of each arc extinguishing plate close to the operating mechanism, and the projections of the arc guiding notches of adjacent two arc extinguishing plates along the height direction of the circuit breaker do not overlap.

9. The power device according to any one of claims 1 to 8, characterized in that, The current conducting assembly further includes a first gas generating plate. The static contact is arranged on one side surface of the first gas generating plate close to the multiple arc extinguishing plates, and the first gas generating plate is used to form gas blowing towards the arc ejection port.

10. The power device according to claim 9, characterized in that, The current conducting assembly further includes a second gas generating plate. The second gas generating plate is arranged on one side surface of the first gas generating plate close to the multiple arc extinguishing plates, and is arranged along the depth direction of the circuit breaker on the side of the static contact close to the operating mechanism. The second gas generating plate is used to form gas blowing towards the arc ejection port.

11. The power device according to any one of claims 1 to 10, characterized in that, The power equipment further includes a circuit board located in the cabinet. The circuit board is arranged along the depth direction of the cabinet on one side of the circuit breaker, and the circuit board is arranged close to the arc extinguishing module.

12. The power device according to any one of claims 1 to 11, characterized in that, The arc extinguishing module includes a module housing and multiple arc extinguishing plates located in the module housing; the multiple arc extinguishing plates are arranged in parallel along the depth direction of the circuit breaker, or the multiple arc extinguishing plates are arranged in parallel along the height direction of the circuit breaker, or the multiple arc extinguishing plates are arranged in parallel along the width direction of the circuit breaker; or at least two of the multiple arc extinguishing plates are arranged at an angle.

13. The power device according to claim 12, characterized in that, The multiple arc extinguishing plates are arranged in parallel along the depth direction of the circuit breaker; each arc extinguishing plate is provided with multiple holes, and the projections of the holes of adjacent two arc extinguishing plates along the depth direction of the circuit breaker do not overlap.

14. The power device according to any one of claims 1 to 13, characterized in that The arc extinguishing module is connected to the outer shell, and the connection includes threaded connection, clamping connection, riveting connection or bonding connection.

15. A circuit breaker, characterized in that, The circuit breaker includes an outer shell, an operating handle, an operating mechanism, a current conducting assembly, an arc extinguishing chamber and an arc extinguishing module, 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, the arc extinguishing chamber, and the arc eliminating module are sequentially arranged in the housing along the depth direction of the circuit breaker. The static contact is located on the side away from the operating mechanism of the moving contact component along the depth direction of the circuit breaker. The moving contact component includes a gas-producing connecting rod and a moving contact. The gas-producing connecting rod is rotatably connected to the housing, and the moving contact is relatively fixed to the gas-producing connecting rod. The operating mechanism is connected to the moving contact component. 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 arc extinguishing chamber is used to eliminate the arc generated when the moving contact separates from the static contact. The arc extinguishing chamber includes a plurality of arc extinguishing plates sequentially arranged along the height direction of the circuit breaker. The static contact is located on one side of the plurality of arc extinguishing plates along the height direction of the circuit breaker. The movement track of the moving contact extends from the static contact to the other side of the plurality of arc extinguishing plates along the height direction of the circuit breaker. The arc eliminating module is used to purify the gas ejected from the arc extinguishing chamber. There is an arc ejection port between the arc eliminating module and the arc extinguishing chamber. The arc ejection port communicates the arc extinguishing chamber and the arc eliminating module, and the arc ejection port is arranged close to the other side of the arc extinguishing plate. The gas-producing connecting rod is used to form a gas blast towards the arc ejection port.

Images