Circuit breaker and power equipment

Abstract

The invention provides a circuit breaker and power equipment. The circuit breaker comprises a shell, an operating handle, an operating mechanism, a through-flow assembly, an arc extinguishing chamber and an arc extinguishing module. And the operating handle, the operating mechanism, the through-flow assembly, the arc extinguishing chamber and the arc extinguishing module are sequentially arranged along the depth direction of the circuit breaker. The through-flow assembly comprises a moving contact assembly and a static contact. The operating mechanism is connected with the moving contact assembly. The operating handle is used for controlling the operating mechanism to drive the gas production connecting rod of the moving contact assembly to rotate, so that the moving contact is in contact with or separated from the static contact. The arc extinguish chamber is used for eliminating electric arcs generated when the moving contact is separated from the static contact. The arc extinguishing module is used for purifying gas sprayed out of the arc extinguishing chamber. All the mechanisms of the circuit breaker are arranged in the depth direction of the circuit breaker, the size in the height direction is small, and the number of circuit breakers capable of being arranged in a cabinet is increased. And when the moving contact is separated from the static contact, the gas production connecting rod is used for forming gas blowing, so that the arc passes through the arc extinguishing chamber along the depth direction to realize arc extinguishing, and the safety of the circuit breaker is improved.

Description

Technical Field

[0001] This application relates to the technical field of communication equipment, and particularly to a circuit breaker and a power equipment. Background Art

[0002] As technologies such as artificial intelligence (AI), 5.5G, and autonomous driving are gradually applied to people's daily lives and work, the demand for computing power by these technologies has also increased significantly. As a key area for computing power support, data centers are required to have ultra-high capacity and high density. As an indispensable core unit in modern data centers, the uninterruptible power supply (UPS) has been further miniaturized under the leadership of capacity upgrade and high-density trends.

[0003] In the power supply and distribution system of a data center, a circuit breaker is usually used to achieve the distribution of electric energy. As a key device in the power supply and distribution system, the circuit breaker can not only control the on and off of the circuit, but also has a certain protection function. Specifically, a mechanical switch can be set in the circuit breaker, and the operator can operate the mechanical switch to switch the circuit breaker between the closed and open states, thereby achieving the conduction or disconnection of the circuit. In addition, when faults such as overload and short circuit occur in the circuit, the circuit breaker can automatically switch to the open state to cut off the current in the circuit, thereby realizing its protection function.

[0004] For a data center, as the volume and power consumption of the power conversion module are further reduced, the current rating also increases. However, the internal space of the existing cabinet is limited, resulting in great limitations in the layout and quantity of circuit breakers, and unable to meet the operating current with higher requirements. Summary of the Invention

[0005] This application provides a circuit breaker and a power equipment to adjust the overall size of the circuit breaker, change the occupied space of the circuit breaker in the cabinet, thereby increasing the number of circuit breakers that can be laid out in the cabinet and improving the safety of the circuit breaker.

[0006] In a first aspect, the present application provides a power device. The power device includes a cabinet and a plurality of circuit breakers and a plurality of power modules located inside the cabinet. Among them, the plurality of circuit breakers are sequentially arranged inside 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. Specifically, the circuit breaker includes a housing, an operating handle, an operating mechanism, a current-carrying component, an arc extinguishing chamber, and an arc extinguishing module. The operating handle is connected to the operating mechanism. The current-carrying component includes a moving contact component and a static contact. At least the part of the operating handle close to the operating mechanism, the operating mechanism, the moving contact component, the arc extinguishing chamber, and the arc extinguishing module are sequentially arranged inside 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 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 extinguishing module is used to purify the gas ejected from the arc extinguishing chamber. There is an arc ejection port between the arc extinguishing module and the arc extinguishing chamber. The arc ejection port communicates with the arc extinguishing chamber and the arc extinguishing 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 blow towards the arc ejection port.

[0007] The above circuit breaker has a circuit breaker operation surface for staff to perform closing and opening operations, view the working status of the circuit breaker, and other operations. In the plane where the circuit breaker operation surface is located, the dimension of the circuit breaker along the direction of pushing the operating handle is the height, and the dimension perpendicular to the height direction of the circuit breaker is the width. The dimension of the circuit breaker along the direction perpendicular to the circuit breaker operation surface is the depth. The circuit breaker of the present application can be applied to the power supply and distribution system, and the circuit breaker can be specifically installed in the cabinet. Similarly, the cabinet has a user operation surface for staff to perform control operations, installation and disassembly, or maintenance operations. The circuit breaker operation surface of the circuit breaker faces the same direction as the user operation surface. Taking the state where the cabinet is placed on the ground as an example, in the plane where the user operation 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 operation surface is the depth. When multiple above-mentioned circuit breakers are installed in the cabinet, these circuit breakers are placed parallel along the width direction of the cabinet, wherein the circuit breaker operation surface of the circuit breaker faces the same direction as the user operation surface of the cabinet, and the height direction of each circuit breaker is the same as the width direction of the cabinet, the width direction of each circuit breaker is the same as the height direction of the cabinet, and the depth direction of each circuit breaker is the same as the depth direction of the cabinet, that is, each circuit breaker is placed horizontally in the cabinet.

[0008] 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 suppressing 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 suppressing module are arranged in a layered form along the depth direction of the circuit breaker. This can reduce the layout of components in the height direction of the circuit breaker, thereby reducing the height dimension of the circuit breaker, and further 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-carrying layer), a fourth layer (arc extinguishing layer), and a fifth layer (arc suppressing layer). When specifically setting the circuit breaker, the operating handle is located in the first layer, the operating mechanism is located in the second layer, the current-carrying component is located in the third layer, the arc extinguishing chamber is located in the fourth layer, and the arc suppressing module is located in the fifth layer. In addition, in the power equipment of the present application, when the gas-producing material is eroded by the arc, a large amount of gas is generated, resulting in an increase in the pressure at the eroded position of the gas-producing material, thereby forming a pressure difference between this position and the surrounding environment, and then forming an air flow flowing from this position to the low-pressure environment. This flowing air flow is called gas blowing. Among them, the gas-producing material includes, but is not limited to, composite materials, ceramic materials, or other new materials. In the fourth layer (arc extinguishing layer), when the moving contact separates from the static contact, an arc is generated between the moving contact and the static contact. The gas-producing connecting rod made of the gas-producing material generates a large amount of gas under the erosion of the arc, causing the pressure around the gas-producing connecting rod to increase and forming a pressure difference with the outside of the circuit breaker, thereby forming gas blowing on the arc through the arc ejection port. Under the action of gas blowing, the arc passes through multiple arc extinguishing plates, and the temperature of the arc is reduced during this process, so that the arc energy is fully cooled, and at the same time, a relatively high arc voltage is generated to extinguish the arc, thereby improving the arc extinguishing safety of the circuit breaker.

[0009] In a possible implementation manner, a partition is provided inside 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. One end of the gas-producing connecting rod close to the arc extinguishing chamber is provided with a baffle. 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. In this implementation manner, 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, which is the arc ejection port. Therefore, when the moving contact separates from the static contact, the direction of the gas blowing generated by the gas-producing connecting rod is from the side of the arc extinguishing chamber close to the operating mechanism towards the side of the arc extinguishing chamber close to the arc suppressing module, and finally flows out from the arc ejection port.

[0010] When specifically setting the arc extinguishing chamber, the above-mentioned multiple arc extinguishing plates are arranged in an arc shape. Along the height direction of the circuit breaker, on the side of the above-mentioned multiple arc extinguishing plates close to the static contact, the arc extinguishing plate is arranged close to the arc extinguishing module, and on the side of the above-mentioned multiple arc extinguishing plates far from the static contact, the arc extinguishing plate is arranged close to the operating mechanism. During the process of the moving contact rotating relative to the housing to contact or separate from the static contact, the movement trajectory of the moving contact is arc-shaped, and the arrangement shape of the above-mentioned multiple arc extinguishing plates matches the movement trajectory of the moving contact, so that the moving contact always maintains a set distance from the arc extinguishing plate during the movement process, which is beneficial to the arc passing through the arc extinguishing plate under the action of air blowing, achieving a better arc extinguishing effect.

[0011] When specifically setting the arrangement mode of the above-mentioned multiple arc extinguishing plates, in a possible implementation mode, the multiple arc extinguishing plates are arranged in parallel. In another possible implementation mode, among the above-mentioned multiple arc extinguishing plates, the distance between at least two arc extinguishing plates close to the operating mechanism on the side close to the arc ejection port is smaller than the distance between the at least two arc extinguishing plates on the side close to the arc ejection port.

[0012] In a possible implementation mode, the arc extinguishing chamber further includes two gas generating plates arranged opposite to each other 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 air blowing towards the arc ejection port. The movement trajectory of the moving contact 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 above-mentioned two gas generating plates. Thus, during the process of the moving contact separating from the static contact, the gas generating plates on both sides of the moving contact generate air blowing under the erosion of the arc, so that the arc generated during the process of the moving contact separating from the static contact is always blown towards the arc extinguishing plate to extinguish the arc in a timely manner.

[0013] In a possible implementation mode, the arc extinguishing chamber further includes two support plates arranged opposite to each other along the width direction of the circuit breaker. The above-mentioned multiple arc extinguishing plates are respectively connected between the two support plates, and the two support plates are used to support and fix the above-mentioned multiple arc extinguishing plates.

[0014] In a possible implementation mode, the arc extinguishing chamber further includes two arc leading plates. The two arc leading plates are arranged opposite to each other along the height direction of the circuit breaker on both sides of the above-mentioned multiple arc extinguishing plates. One of the arc leading plates is used to lead the arc around the static contact to the arc extinguishing plate, and the other arc leading plate is used to lead the arc around the moving contact to the arc extinguishing plate, so that the arc can be guided to the arc extinguishing plate as soon as possible after the arc is generated for arc extinguishing.

[0015] In a possible implementation, the above two arcing plates may specifically include a first arcing plate and a second arcing plate. The first arcing plate is disposed away from the static contact and is L-shaped. Specifically, the first arcing plate includes a first arcing portion and a second arcing portion that are vertically disposed. The first arcing portion and the second arcing plate are oppositely disposed on both sides of the plurality of arc extinguishing plates. The second arcing plate is disposed close to the static contact, and the second arcing portion extends along the height direction of the circuit breaker and is close to the operating mechanism. In this way, the first arcing plate can be disposed close to the movement track of the moving contact, and the second arcing plate is disposed close to the static contact to guide the arc in a timely manner.

[0016] In a possible implementation, an arcing notch is provided on one side of each arc extinguishing plate close to the operating mechanism, and the projections of the arcing notches of two adjacent arc extinguishing plates along the height direction of the circuit breaker do not overlap, so that the path of the arc increases when passing through the arcing notches of two adjacent arc extinguishing plates, thereby increasing the length of the arc, enabling the arc to be in full contact with the arc extinguishing plates, and being conducive to accelerating the cooling and extinguishing of the arc.

[0017] In a possible implementation, the current-carrying component further includes a first gas-producing plate. The static contact is disposed on one side surface of the first gas-producing plate close to the plurality of arc extinguishing plates, and the first gas-producing plate is used to form a gas blast towards the arc ejection port. Along the height direction of the circuit breaker, the static contact is located between the first gas-producing plate and the plurality of arc extinguishing plates, so that the gas blast generated by the first gas-producing plate can directly blow the arc around the static contact towards the arc extinguishing plates.

[0018] In a possible implementation, the current-carrying component further includes a second gas-producing plate. The second gas-producing plate is disposed on one side surface of the first gas-producing plate close to the plurality of arc extinguishing plates and is disposed on the side of the static contact close to the operating mechanism along the depth direction of the circuit breaker. The second gas-producing plate is used to form a gas blast towards the arc ejection port. Therefore, the first gas-producing plate and the second gas-producing plate can form multiple gas blasts on the periphery of the static contact, increasing the gas-blast arc extinguishing effect.

[0019] In a possible implementation, the power equipment further includes a circuit board located in 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 disposed close to the arc extinguishing module. The arc extinguishing module can adsorb the free ions ejected from the arc extinguishing chamber, so that the gas ejected by the circuit breaker through the arc extinguishing module can achieve complete zero flashover, avoiding adverse effects on the circuit board of the power equipment.

[0020] In a possible implementation, the arc extinguishing module includes a module housing and a plurality of arc extinguishing plates located in the module housing. The specific distribution manner of the foregoing plurality of arc extinguishing plates is not limited. For example, the plurality of arc extinguishing plates may be arranged in parallel along the depth direction of the circuit breaker, or the plurality of arc extinguishing plates may be arranged in parallel along the height direction of the circuit breaker, or the plurality of arc extinguishing plates may be arranged in parallel along the width direction of the circuit breaker, or at least two of the plurality of arc extinguishing plates are arranged at an angle.

[0021] In a possible implementation, a plurality of arc extinguishing plates are arranged in parallel along the depth direction of the circuit breaker. Each arc extinguishing plate is provided with a plurality of holes, and the projections of the holes of two adjacent arc extinguishing plates along the depth direction of the circuit breaker do not overlap, so as to improve the ability of the arc extinguishing module to adsorb free ions.

[0022] The above arc extinguishing module is an independent module. The arc extinguishing module is connected to the housing, and the connection includes threaded connection, clamping connection, riveting or bonding. In a possible implementation, the arc extinguishing module is clamped to the housing. Specifically, a clamping groove is provided inside the housing, and a clamping protrusion is provided on the outer wall of the arc extinguishing module. The clamping protrusion is received in the clamping groove, or can be fastened to the outer wall by other means.

[0023] 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 component, an arc extinguishing chamber and an arc extinguishing 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 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 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 extinguish 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 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 extinguishing module is used to purify the gas ejected from the arc extinguishing chamber. There is an arc ejection port between the arc extinguishing module and the arc extinguishing chamber. The arc ejection port communicates with the arc extinguishing chamber and the arc extinguishing 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 blow towards the arc ejection port.

[0024] 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 suppressing 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 suppressing module are arranged in a layered form along the depth direction of the circuit breaker. This can reduce the layout of components in the height direction of the circuit breaker, thereby reducing the height dimension of the circuit breaker, and further 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 (electric operation or manual operation layer), a second layer (operation layer), a third layer (current-carrying layer), a fourth layer (arc extinguishing layer), and a fifth layer (arc suppressing layer). When specifically setting the circuit breaker, the operating handle is located in the first layer, the operating mechanism is located in the second layer, the current-carrying assembly is located in the third layer, the arc extinguishing chamber is located in the fourth layer, and the arc suppressing module is located in the fifth layer. In the fourth layer (arc extinguishing layer), when the moving contact separates from the static contact, an arc is generated between the moving contact and the static contact. A large amount of gas is generated by the gas-producing connecting rod under the erosion of the arc, causing the pressure around the gas-producing connecting rod to rise and forming a pressure difference with the outside of the circuit breaker, thereby forming a gas blast on the arc through the arc ejection port. Under the action of the gas blast, the arc passes through multiple arc extinguishing plates, and during this process, the temperature of the arc is reduced, the arc energy is fully cooled, and at the same time, a relatively high arc voltage is generated to extinguish the arc, thereby improving the arc extinguishing safety of the circuit breaker. Description of the Drawings

[0025] Figure 1 Schematic diagram of an application scenario of the circuit breaker provided by an embodiment of the present application;

[0026] Figure 2 Schematic diagram of a power equipment provided by an embodiment of the present application;

[0027] Figure 3 Schematic diagram of a circuit breaker provided by an embodiment of the present application;

[0028] Figure 4 Another schematic diagram of the circuit breaker provided by an embodiment of the present application;

[0029] Figure 5 is Figure 3 A cross-sectional view of the circuit breaker along the A-A direction;

[0030] Figure 6 Another schematic diagram of the circuit breaker provided by an embodiment of the present application;

[0031] Figure 7 Schematic diagram of a static contact assembly provided by an embodiment of the present application;

[0032] Figure 8 Another schematic diagram of the static contact assembly provided by an embodiment of the present application;

[0033] Figure 9Another schematic diagram of the static contact assembly provided by the embodiment of the present application;

[0034] Figure 10 A schematic diagram of the arc extinguishing chamber provided by the embodiment of the present application;

[0035] Figure 11 For Figure 10 A cross-sectional view of the arc extinguishing chamber along the B-B direction;

[0036] Figure 12 For Figure 10 Another cross-sectional view of the arc extinguishing chamber along the B-B direction;

[0037] Figure 13 A schematic diagram of the arc extinguishing module provided by the embodiment of the present application;

[0038] Figure 14 Another schematic diagram of the arc extinguishing module provided by the embodiment of the present application;

[0039] Figure 15 Another schematic diagram of the arc extinguishing module provided by the embodiment of the present application;

[0040] Figure 16 Another schematic diagram of the arc extinguishing module provided by the embodiment of the present application.

[0041] Reference numerals:

[0042] 01 - Power supply and distribution system 02 - Power module 10 - Electrical equipment

[0043] 11 - Cabinet 20 - Circuit breaker 21 - Shell

[0044] 22 - Operating handle 23 - Operating mechanism 24 - Current-carrying component

[0045] 25 - Arc extinguishing chamber 26 - Arc extinguishing module 27 - Partition

[0046] 110 - User operation surface 210 - Circuit breaker operation surface 211 - Limit projection

[0047] 241 - Moving contact assembly 242 - Static contact assembly 243 - Conductor

[0048] 244 - First copper bar 245 - Second copper bar 246 - First joint

[0049] 247 - Second joint 251 - Arc extinguishing piece 252 - First gas-generating piece

[0050] 253 - Second gas-generating piece 254 - First support plate 255 - Second support plate

[0051] 256 - First arc guiding plate 257 - Second arc guiding plate 261 - Module housing

[0052] 262 - Arc extinguishing plate, 2411 - Gas generating connecting rod, 2412 - Moving contact

[0053] 2413 - Baffle plate, 2421 - Static contact, 2422 - First gas generating plate

[0054] 2423 - Second gas generating plate, 2511 - Arc - leading notch, 2611 - Clamping projection

[0055] 2571 - Gas generating port Specific embodiments

[0056] In order to make the objectives, technical solutions, and advantages of this application clearer, the following will further describe this application in detail with reference to the accompanying drawings.

[0057] To facilitate the understanding of the circuit breaker and power equipment provided in the embodiments of this application, the following explains its application scenarios. The circuit breaker and power equipment provided in the embodiments of this application can be widely applied in various power supply and distribution systems. Figure 1 This is a schematic diagram of an application scenario of the circuit breaker provided in the embodiments of this application. As Figure 1 shown, in an example provided in this application, the circuit breaker can be applied in the power supply and distribution system 01 of a data center to connect, carry, and disconnect the current between the power supply network and the data center. The power supply and distribution system 01 can include a power module 02 (such as Figure 1 the power module 02 formed by the parallel and series connection of multiple UPSs as shown) and multiple circuit breakers. Taking the case where there are three circuits in the power supply and distribution system 01 as an example, they are the first circuit C1, the second circuit C2, and the third circuit C3 respectively. A circuit breaker is correspondingly provided in each circuit. Among them, the first circuit C1 is connected to the power module 02, and a first circuit breaker K1 is provided at the input end of the power module 02, and a second circuit breaker K2 is provided at the output end; the second circuit C2 is connected to the bypass module, 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 standby circuit, and a fourth circuit breaker K4 is provided.

[0058] When it is necessary to connect the circuit between the power supply network (or power supply) and the data center, the first circuit breaker K1 and the second circuit breaker K2 can be switched to the closed state; when it is necessary to disconnect the circuit between the power supply network and the data center, the first circuit breaker K1 or the second circuit breaker K2 can be switched to the open state. In this way, the on - off state of the data center is controlled by controlling the closed state and open state of the circuit breaker. When the electrical equipment in the data center needs to be repaired or maintained, the first circuit breaker K1 and the second circuit breaker K2 can be switched to the open state, and the third circuit breaker K3 or the fourth circuit breaker K4 can be switched to the closed state to facilitate the repair, maintenance, and other work of the electrical equipment.

[0059] In addition, the circuit breaker of the present application can also be applied to the power supply and distribution system 01 of enterprise electrical equipment or public electrical equipment, and is used to connect, carry, and disconnect the current between the power supply network and enterprise electrical equipment or public electrical equipment. Exemplarily, when an electrical device (such as a 4G base station, a 5G base station, 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 electrical energy required for the normal operation of the electrical device. When the electrical device needs to be repaired and maintained, the staff can switch the circuit breaker to the open state to facilitate the repair, maintenance, and other work of the electrical device.

[0060] The above power supply system may specifically include a plurality of power devices 10. Figure 2 It is a schematic diagram of the power device provided by the embodiment of the present application. As Figure 2 shown, 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 the 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 parallel to the ground of the user operation surface 110 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 foregoing plurality of power modules are stacked in sequence along the height direction H of the cabinet 11, and the foregoing plurality of circuit breakers are placed in sequence along the width direction W of the cabinet 11 on one side of the foregoing plurality of power modules. Among them, the power module is used to perform power conversion on 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.

[0061] In existing power devices, due to the limited width and height dimensions of the cabinet, the number of circuit breakers on the user operation surface 110 side is limited, which cannot meet the layout requirements of large capacity and high density of the power supply and distribution system.

[0062] Therefore, the present application provides a circuit breaker and a power device to adjust the overall size of the circuit breaker, so as to change the occupied space of the circuit breaker in the cabinet, thereby increasing the number of circuit breakers that can be laid out in the cabinet and improving the safety of the circuit breaker.

[0063] 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 appended claims of the present application, the singular forms "a", "an", "the", "above", "said", "this" are also intended to include the forms such as "one or more", unless the context clearly indicates otherwise.

[0064] Reference to "one embodiment" or "some embodiments" or the like described in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants mean "including but not limited to", unless otherwise specifically emphasized.

[0065] Figure 3 A schematic diagram of a circuit breaker provided for an embodiment of the present application. Figure 4 Another schematic diagram of a circuit breaker provided for an embodiment of the present application, wherein Figure 4 shows Figure 3 A sectional view of the circuit breaker along the A-A direction. As Figure 3 and Figure 4As shown, the circuit breaker 20 includes a housing 21, an operating handle 22, an operating mechanism 23, a current-carrying component 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 current-carrying component 24 includes a moving contact assembly 241 and a static contact assembly 242. In one embodiment, one end of the operating handle 22 away from the operating mechanism 23 can extend out of the housing 21 so that the staff can push the operating handle 22 to perform closing and opening operations. In another embodiment, the housing 21 is provided with a knob to manually operate the opening and closing of the circuit breaker 20 through the knob. Specifically, one end of the operating handle 22 away from the operating mechanism 23 is connected to the knob. When the staff performs manual operation with the knob, the knob is rotated to drive the operating handle 22 to push along 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 to the remote controller to perform the opening and closing of the circuit breaker 20 through the electric operation. When the staff performs electric operation, a closing instruction or an opening instruction is sent to the remote controller, and the remote controller can control the electric operating device to push the operating handle 22. In this embodiment, the staff can send instructions close to the circuit breaker 20 or remotely through a communication device. In addition, at least a part of the operating handle 22 close 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 in the housing 21 along the depth direction d of the circuit breaker 20. The static contact assembly 242 includes a static contact 2421. Along the depth direction d of the circuit breaker 20, the static contact 2421 is located on the side of the moving contact assembly 241 away from the operating mechanism 23. That is to say, 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 in transmission connection with the operating handle 22. The current-carrying component 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-producing connecting rod 2411 and a moving contact 2412. The gas-producing connecting rod 2411 is rotatably connected to the housing 21, and the moving contact 2412 is relatively fixed to the gas-producing 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 gas-producing connecting rod 2411 of the moving contact assembly 241 to rotate, so that the moving contact 2412 rotates together with the gas-producing connecting rod 2411, so that the moving contact 2412 contacts or separates from the static contact 2421. The arc extinguishing chamber 25 is used to eliminate 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 sheets 251 sequentially arranged along the height direction h of the circuit breaker 20. The static contact 2421 is located on one side of the above-mentioned plurality of arc extinguishing sheets 251 along the height direction h of the circuit breaker 20. The movement track of the moving contact 2412 extends from the static contact 2421 to the other side of the above-mentioned plurality of arc extinguishing sheets 251 along the height direction h of the circuit breaker 20. The arc extinguishing module 26 is used to purify the gas ejected from the arc extinguishing chamber 25.An arc extinguishing port is provided between the arc extinguishing module 26 and the arc chute 25. The arc extinguishing port communicates with the arc chute 25 and the arc extinguishing module 26, and the arc extinguishing port is arranged near the other side of the arc extinguishing piece 251. The gas generating connecting rod 2411 is used to form gas blowing towards the arc extinguishing port.

[0066] In this application, the side of the operating handle 22 extending 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 in the pushing direction of the operating handle 22 is the height, the dimension perpendicular to the height direction 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, the operating mechanism 23, the current-carrying component 24, the arc extinguishing chamber 25, and the arc suppressing module 26 are arranged in sequence 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 the same as the width direction W of the cabinet 11, the width direction w of the circuit breaker 20 is the same as the height direction H of the cabinet 11, and the depth direction d of the circuit breaker 20 is the same as the depth direction D of the cabinet 11. Therefore, when the staff performs a closing operation or a tripping operation on the circuit breaker 20, the staff pushes the operating handle 22 along the width direction W of the cabinet 11. When pushing the operating handle 22 to perform a tripping operation or a closing operation, the operating mechanism 23 can move along with the operating handle 22 to drive the moving contact 2412 to separate from or contact the static contact 2421. When the moving contact 2412 contacts the static contact 2421, the circuit breaker 20 is in the closed state; when the moving contact 2412 separates from the static contact 2421, the circuit breaker 20 is in the tripped state. In the circuit breaker 20 of this application, at least the part of the operating handle 22 close to the operating mechanism 23, the operating mechanism 23, the moving contact assembly 241, the arc extinguishing chamber 25, and the arc suppressing module 26 are arranged along the depth direction d of the circuit breaker 20, regarded as arranged in a layered form, so as to reduce the height h dimension of the circuit breaker 20, reduce the occupied space of the circuit breaker 20, and increase 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 (electric operation or manual operation layer), the operating mechanism 23 is located on the second layer (operation layer), a part of the current-carrying component 24 is located on the third layer (current-carrying layer), the arc extinguishing chamber 25 is located on the fourth layer (arc extinguishing layer), and the arc suppressing module 26 is located on the fifth layer (arc suppressing layer). In addition, in the power equipment of this application, after the gas-producing material is eroded by the arc, a large amount of gas is generated, resulting in an increase in the pressure at the eroded position of the gas-producing material, so that a pressure difference is formed between this position and the surrounding environment, and then an air flow flowing from this position to the low-pressure environment is formed, and this flowing air flow is called gas blowing. Among them, the gas-producing materials include, but are not limited to, composite materials, ceramic materials, or other new materials. In the fourth layer (arc extinguishing layer), when the moving contact 2412 separates from the static contact 2421, an arc is generated between the moving contact 2412 and the static contact 2421. The gas-producing connecting rod 2411 generates a large amount of gas under the erosion of the arc, causing the pressure around the gas-producing connecting rod 2411 to increase and forming a pressure difference with the outside of the circuit breaker 20, so as to form gas blowing on the arc through the arc ejection port. Under the action of the gas blowing, the arc passes through a plurality of arc extinguishing plates 251, and the temperature of the arc is reduced in the process, so that the arc energy is fully cooled, and at the same time a relatively high arc voltage is generated.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, thereby extinguishing the arc and further improving the arc extinguishing safety of the circuit breaker 20.

[0067] Figure 5 For Figure 3 a sectional view of the circuit breaker along the A-A direction. As Figure 5 shown, when specifically setting the moving contact assembly 241, a partition 27 is provided inside 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 is provided with an opening. Along the depth direction d of the circuit breaker 20, the gas-producing connecting rod 2411 is located on the side of the opening close to the operating mechanism 23, and the gas-producing connecting rod 2411 always covers the opening. Specifically, a baffle 2413 is provided at one end of the gas-producing connecting rod 2411 close to the arc extinguishing chamber 25, and the baffle 2413 is located on the side of the opening close to the operating mechanism 23. During the process of the operating mechanism 23 driving the gas-producing connecting rod 2411 to rotate relative to the housing 21, the baffle 2413 always covers the opening. In this way, the baffle 2413 can isolate the operating mechanism 23 and the arc extinguishing chamber 25, making the arc ejection port the only outlet of the arc extinguishing chamber 25. Therefore, when the moving contact 2412 is separated from the static contact 2421, one end of the gas-producing connecting rod 2411 close to the arc extinguishing chamber 25 is eroded by the arc to generate gas blowing, and the gas-producing connecting rod 2411 moves with the moving contact 2412, and can maintain gas blowing around the moving contact 2412, so as to continuously blow the arc towards the arc extinguishing chamber 25 for arc extinguishing when the moving contact 2412 is separated from the static contact 2421, protecting the operating mechanism 23 from arc intrusion.

[0068] Figure 6 Another schematic diagram of the circuit breaker provided by the embodiment of the present application, Figure 7 a schematic diagram of the static contact assembly provided by the embodiment of the present application. As Figure 6 and Figure 7 shown, the static contact assembly 242 further includes a first gas-producing plate 2422. The first gas-producing plate 2422 is arranged on the copper bar of the current-carrying assembly 24, and the static contact 2421 is arranged on one side surface of the first gas-producing plate 2422 close to the arc extinguishing piece 251. The first gas-producing plate 2422 is used to form gas blowing towards the arc ejection port. Along the height direction h of the circuit breaker 20, the static contact 2421 is located between the first gas-producing plate 2422 and the above-mentioned multiple arc extinguishing pieces 251, so that the gas blowing generated by the first gas-producing plate 2422 can directly blow the arc around the static contact 2421 towards the arc extinguishing piece 251, that is, the arc passes through the arc extinguishing piece 251 from Figure 12 the lower right corner of the arc extinguishing chamber 25 in and reaches the upper left corner of the arc extinguishing chamber 25, and then enters the arc extinguishing module 26 through the arc ejection port.

[0069] Figure 8Another schematic diagram of the static contact assembly provided by the embodiment of the present application Figure 9 Another schematic diagram of the static contact assembly provided by the embodiment of the present application. As Figure 8 and Figure 9 shown, the static contact assembly 242 further includes a second gas generating plate 2423. The second gas generating plate 2423 is arranged on the surface of the first gas generating plate 2422 close to the arc extinguishing piece 251, and the second gas generating plate 2423 is located on the side of the static contact 2421 close to the operating mechanism 23 along the depth direction d of the circuit breaker 20. Thus, the first gas generating plate 2422 and the second gas generating plate 2423 can form multiple gas blows on the periphery of the static contact 2421, increasing the gas blowing arc extinguishing effect. In one embodiment, the first gas generating plate 2422 and the second gas generating plate 2423 can be of an integral structure, thus 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, gas blows are generated both below and on the side of the static contact 2421, so that the air pressure around the static contact 2421 increases, and the arc around the static contact 2421 is blown towards the arc extinguishing piece 251 for arc extinguishing.

[0070] As Figure 5 shown, the current conducting assembly 24 further 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 oppositely 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 both sides 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. One end of the first copper bar 244 close to the operating mechanism 23 is electrically connected to the moving contact 2412 through the wire 243, and a first joint 246 is arranged at the end of the first copper bar 244 far from the operating mechanism 23. The static contact assembly 242 is arranged on the second copper bar 245 and is electrically connected to the second copper bar 245. A second joint 247 is arranged at the end of the second copper bar 245 far from the operating mechanism 23. Specifically, the first copper bar 244 and the second copper bar 245 can be respectively fixed to the housing 21. Among them, the surface of the first copper bar 244 far from the arc extinguishing chamber 25 is attached to the inner wall of the housing 21, and the surface of the second copper bar 245 far from the arc extinguishing chamber 25 is attached to the inner wall of the housing 21. In addition, 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.

[0071] Figure 10 A schematic diagram of the arc extinguishing chamber provided by the embodiment of the present application. As Figure 10As shown, in the arc extinguishing chamber 25, a plurality of arc extinguishing plates 251 can be arranged in an arc shape. Along the height direction h of the circuit breaker 20, on one side of the plurality of arc extinguishing plates 251 close to the static contact 2421, the arc extinguishing plate 251 is arranged close to the arc extinguishing module 26, and on the side of the plurality of arc extinguishing plates 251 far from the static contact 2421, the arc extinguishing plate 251 is arranged close to the operating mechanism 23. During the process of the moving contact 2412 rotating relative to the housing 21 to contact or separate from the static contact 2421, the movement trajectory of the moving contact 2412 is an arc. The arrangement shape of the plurality of arc extinguishing plates 251 matches the movement trajectory of the moving contact 2412, so that the moving contact 2412 always maintains a set distance from the arc extinguishing plates 251 during the movement process, which is beneficial for the arc to pass through the plurality of arc extinguishing plates 251 under the action of gas blowing, achieving a better arc extinguishing effect.

[0072] In the arc extinguishing chamber 25 of the present application, the arrangement manner of the plurality of arc extinguishing plates 251 is not limited. Figure 11 For Figure 10 a cross-sectional view of the arc extinguishing chamber along the B-B direction. As Figure 11 shown, in one embodiment, a plurality of arc extinguishing plates 251 can be arranged in parallel along the height direction h of the circuit breaker 20. Figure 12 For Figure 10 another cross-sectional view of the arc extinguishing chamber along the B-B direction. As Figure 12 shown, in another embodiment, the plurality of arc extinguishing plates 251 include at least two arc extinguishing plates 251 close to the arc spraying port. Between the two arc extinguishing plates 251, the distance on the side close to the operating mechanism 23 is smaller than the distance on the side close to the arc spraying port.

[0073] As Figure 10 shown, the arc extinguishing chamber 25 further includes two gas generating plates, namely a first gas generating plate 252 and a second gas generating plate 253. The first gas generating plate 252 and the second gas generating plate 253 are arranged opposite to each other along the width direction w of the circuit breaker 20. The first gas generating plate 252 and the second gas generating plate 253 extend along the height direction h of the circuit breaker 20 respectively, and the first gas generating plate 252 and the second gas generating plate 253 are used to form gas blowing towards the arc spraying port. The movement trajectory of the moving contact 2412 is located between the two gas generating plates. When the moving contact 2412 rotates relative to the housing 21, the moving contact 2412 is always located between the two gas generating plates. Thus, during the process of the moving contact 2412 separating from the static contact 2421, the first gas generating plate 252 and the second gas generating plate 253 generate gas blowing under the erosion of the arc, so that the arc generated during the separation process of the moving contact 2412 is always blown towards the arc extinguishing plates 251 to extinguish the arc.

[0074] 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 oppositely arranged along the width direction w of the circuit breaker 20, and the plurality of arc extinguishing plates 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 plates 251.

[0075] In addition, the arc extinguishing chamber 25 further includes two arc guiding plates. The two arc guiding plates are oppositely arranged along the height direction h of the circuit breaker 20 on both sides of the plurality of arc extinguishing plates 251. One of the arc guiding plates is used to guide the arc around the static contact 2421 to the arc extinguishing plate 251, and the other arc guiding plate is used to guide the arc around the moving contact 2412 to the arc extinguishing plate 251, so that the arc can be guided to the arc extinguishing plate 251 as soon as possible after the arc is generated for arc extinguishing. Specifically, the two arc guiding plates may include a first arc guiding plate 256 and a second arc guiding plate 257. Specifically, the first arc guiding plate 256 is arranged away from the static contact 2421 and is L-shaped. Among them, the first arc guiding plate 256 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 257 are oppositely arranged on both sides of the plurality of arc extinguishing plates 251, the second arc guiding plate 257 is arranged close to the static contact 2421, and the second arc guiding portion extends along the height direction h of the circuit breaker 20 and is close to the operating mechanism 23. In this way, the first arc guiding plate 256 can be arranged close to the movement track of the moving contact 2412, and the second arc guiding plate 257 is arranged close to the static contact 2421, so as to be able to guide the arc in time. In one embodiment, the second arc guiding plate 257 may be arranged on the surface of the first gas generating plate 2422 close to the arc extinguishing plate 251, and the second arc guiding plate 257 is provided with a gas generating port 2571, so that the gas blown by the first gas generating plate 2422 passes through the gas generating port 2571 and blows towards the arc extinguishing plate 251.

[0076] Please continue to refer to Figure 10 , an arc guiding notch 2511 is provided on one side of each arc extinguishing plate 251 close to the moving contact assembly 241, and the projections of the arc guiding notches 2511 of two adjacent arc extinguishing plates 251 along the height direction h of the circuit breaker 20 do not overlap, so that the path of the arc increases when passing through the arc guiding notches 2511 of two adjacent arc extinguishing plates 251, thereby increasing the length of the arc, making the arc fully contact with the arc extinguishing plate 251, and being beneficial to accelerating the cooling and extinguishing of the arc.

[0077] In one embodiment, the power equipment 10 further includes a circuit board located in the cabinet 11. The circuit board and the plurality of circuit breakers 20 are arranged in sequence along the depth direction d of the cabinet 11, and the circuit board is arranged close to the arc extinguishing module 26. The arc extinguishing module 26 can adsorb the free electric ions ejected by the arc extinguishing chamber 25, so that the circuit breaker 20 can achieve complete zero arc flash through the gas ejected by the arc extinguishing module 26, and avoid adverse effects on the circuit board of the power equipment 10.

[0078] Figure 13 This is a schematic diagram of the arc extinguishing module provided by an embodiment of the present application. Figure 14 This is another schematic diagram of the arc extinguishing module provided by an embodiment of the present application. As Figure 13 and Figure 14 shown, the arc extinguishing module 26 includes a module housing 261 and a plurality of arc extinguishing plates 262 located inside the module housing 261. The specific distribution manner of the foregoing plurality of arc extinguishing plates 262 is not limited. For example, the plurality of arc extinguishing plates 262 may be sequentially arranged along the depth direction d of the circuit breaker 20, or the plurality of arc extinguishing plates 262 may be sequentially arranged along the height direction h of the circuit breaker 20, or the plurality of arc extinguishing plates 262 may be sequentially arranged along the width direction w of the circuit breaker 20. Among them, two adjacent arc extinguishing plates 262 may be arranged in parallel, or two adjacent arc extinguishing plates 262 may also be arranged at an angle. In addition, when two adjacent arc extinguishing plates 262 are arranged in parallel, the interval distance between any two adjacent arc extinguishing plates 262 may be equal, that is, the plurality of arc extinguishing plates 262 are arranged at equal intervals.

[0079] In one embodiment, the foregoing plurality of arc extinguishing plates 262 are arranged in parallel along the depth direction d of the circuit breaker 20. In other words, the foregoing plurality of arc extinguishing plates 262 are respectively perpendicular to the depth direction d of the circuit breaker 20. Among them, each arc extinguishing plate 262 is provided with a plurality of holes, and the projections of the holes of two adjacent arc extinguishing plates 262 along the depth direction d of the circuit breaker 20 do not overlap, so as to improve the ability of the arc extinguishing module 26 to adsorb electric free ions. In addition, among the foregoing plurality of arc extinguishing plates 262, the diameter of the holes of the arc extinguishing plate 262 farthest from the operating handle 22 may be smaller than the diameter of the holes of other arc extinguishing plates 262, so as to further improve the safety of the gas ejected by the arc extinguishing module 26.

[0080] Figure 15 This is another schematic diagram of the arc extinguishing module provided by an embodiment of the present application. As Figure 15 shown, in another embodiment, the foregoing plurality of arc extinguishing plates 262 are arranged in parallel along the height direction h of the circuit breaker 20. In other words, the foregoing plurality of arc extinguishing plates 262 are respectively perpendicular to the height direction h of the circuit breaker 20. In this embodiment, the arc extinguishing plates 2262 may be provided with the foregoing holes. Or, the arc extinguishing plates 2622 may also not be provided with holes, but are made of a material with an adsorption function.

[0081] In the embodiments of the present application, the type of the arc extinguishing plate 262 is not limited. For example, the arc extinguishing plate 262 may be a filter screen, a flame extinguishing plate, a gas generating plate or a woven mesh plate. In this embodiment, the plurality of arc extinguishing plates 262 in the arc extinguishing module 26 may be arc extinguishing plates 262 of the same type, or the plurality of arc extinguishing plates 262 in the arc extinguishing module 26 may also be at least two different types of arc extinguishing plates 262. In addition, the material of the plurality of arc extinguishing plates 262 may be either metal or plastic.

[0082] The above arc suppression module 26 is an independent module, and the arc suppression module 26 and the housing 21 can be connected by means of threaded connection, welding, riveting, clamping or bonding. As Figure 14 shown, in one embodiment, a clamping groove 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 received in the clamping groove. 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 Another schematic diagram of the arc suppression module provided by the embodiment of the present application. As Figure 16 shown, in another embodiment, a limiting protrusion 211 is provided on the inner wall of the housing 21. After the arc suppression module 26 is installed in the housing 21, the limiting protrusion 211 can limit the module housing 261.

[0083] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope 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 inside the cabinet. The plurality of circuit breakers are sequentially arranged inside 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 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 suppression module are sequentially arranged inside 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 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, 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 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 inside 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 equipment 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 device 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 on both sides of the multiple arc extinguishing plates along the height direction of the circuit breaker.

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 in an L shape. 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 equipment 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 on the side of the static contact close to the operating mechanism along the depth direction of the circuit breaker. 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 on one side of the circuit breaker along the depth direction of the cabinet and is close to the arc extinguishing module.

12. The power equipment 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, snap connection, riveting or bonding.

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 suppressing module are sequentially arranged in the housing along the depth direction of the circuit breaker. 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 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 extinguish 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 suppressing module is used to purify the gas ejected from the arc extinguishing chamber. There is an arc ejection port between the arc suppressing module and the arc extinguishing chamber. The arc ejection port communicates the arc extinguishing chamber and the arc suppressing 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.

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