Circuit breaker and power equipment

Abstract

The utility model provides a circuit breaker and power equipment. The circuit breaker comprises a shell, an operating handle, an operating mechanism and a through-flow assembly which are sequentially arranged in the depth direction of the circuit breaker. The backup protector comprises a static iron core and a movable iron core assembly, the movable iron core assembly comprises a movable iron core, and the static iron core and the movable iron core are sequentially arranged in the depth direction. The static iron core and the shell are relatively fixed, and the movable iron core is slidably connected with the shell. The movable iron core and the static iron core are arranged at intervals. The lock catch assembly is in transmission connection with the movable iron core assembly. The backup protector is used for generating magnetic acting force on the movable iron core by the static iron core when fault current is detected, so that the movable iron core assembly moves in the depth direction of the circuit breaker, the lock catch assembly is controlled to drive the operation assembly to move, and therefore the movable contact is separated from the static contact. The backup protector controls the operating mechanism in a sliding mode along the depth direction of the circuit breaker, and minimization of the circuit breaker in the height direction is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of power equipment, and in particular to a circuit breaker and power equipment. Background Art

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

[0003] In the power supply and distribution system of the data center, circuit breakers are usually required to realize the distribution of electric energy. As a key component in the power supply and distribution system, the circuit breaker not only plays the role of controlling the on and off of the circuit, but also has certain protection functions. Specifically, a mechanical switch can be set in the circuit breaker, and the staff can operate the mechanical switch to switch the closed or open state of the circuit breaker, thereby realizing the conduction or disconnection of the circuit. In addition, when the circuit has an overload, short circuit or other faults, the tripping mechanism in the circuit breaker can also switch the circuit breaker to the disconnected state to disconnect the current in the circuit, thereby realizing its protection function. However, the size of the tripping mechanism in the existing circuit breaker is large, which is not conducive to the miniaturization of the circuit breaker in the height direction, resulting in great limitations in the layout and number of circuit breakers in the cabinet, and it is impossible to meet the higher requirements of the operating current. Utility Model Content

[0004] The present application provides a circuit breaker and an electric power device to adjust the size of a backup protector in the height direction of the circuit breaker, which is beneficial to the miniaturization of the circuit breaker, thereby changing 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.

[0005] In a first aspect, the present application provides an electric power device. The electric power device includes a cabinet, a plurality of circuit breakers and a plurality of power modules. The aforementioned plurality of power modules are arranged in the cabinet, and the aforementioned plurality of circuit breakers are arranged in the cabinet in sequence along the width direction of the cabinet, wherein the height direction of the circuit breaker is in the same direction as the width direction of the cabinet, the width direction of the circuit breaker is in the same direction as the height direction of the cabinet, and the depth direction of the circuit breaker is in the same direction as the depth direction of the cabinet. Specifically, the circuit breaker includes a housing, an operating handle, an operating mechanism and a flow assembly. Among them, the operating handle is connected to the operating mechanism. The flow assembly includes a moving contact and a static contact, the moving contact can rotate relative to the housing, and the static contact is located on the side of the moving contact away from the operating mechanism along the depth direction of the circuit breaker. At least the part of the operating handle close to the operating mechanism, the operating mechanism and the moving contact are arranged in the housing in sequence along the depth direction of the circuit breaker. The operating handle is used to control the operating mechanism to drive the moving contact to move so that the moving contact contacts or separates from the static contact. In addition, the operating mechanism includes a lock assembly and an operating assembly, the operating assembly is connected to the operating handle and the operating assembly is connected to the moving contact, and the lock assembly is used to lock or unlock the movement of the operating assembly. The circuit breaker may also include a backup protector, the backup protector includes a static iron core and a moving iron core assembly, the moving iron core assembly includes a moving iron core, and the static iron core and the moving iron core are arranged in sequence along the depth direction of the circuit breaker. The static iron core is relatively fixed to the outer shell, and the moving iron core is slidably connected to the outer shell. The moving iron core and the static iron core are arranged at intervals to electrically isolate the moving iron core from the static iron core. The lock assembly is transmission-connected to the moving iron core assembly. The backup protector is used for when a fault current is detected, the static iron core generates a magnetic force on the moving iron core and enables the moving iron core assembly to move along the depth direction of the circuit breaker, so as to control the lock assembly to drive the operating assembly to move, thereby separating the moving contact from the static contact.

[0006] The above-mentioned circuit breaker has a circuit breaker operating surface for the 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 direction 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 the 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 of the above-mentioned circuit breakers are installed in the 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.

[0007] 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 and the moving contact are arranged along the depth direction of the circuit breaker. It can be understood that the part of the operating handle, the operating mechanism, the moving contact and the arc extinguishing chamber are arranged in a layered form along the depth direction of the circuit breaker, so that the layout of the components of the circuit breaker along the height direction can be reduced, thereby reducing the height dimension of the circuit breaker, and then reducing the occupied space of the circuit breaker to increase the number of layouts of the circuit breaker in the cabinet. Among them, the circuit breaker includes a first layer (electric or manual operation layer), a second layer (operation layer), and a third layer (current passing layer). When the circuit breaker is specifically set, the operating handle is located on the first layer, the operating mechanism is located on the second layer, and the current passing component is located on the third layer. Among them, the moving contact can extend along the depth direction of the circuit breaker, so that the size of the moving contact in the height direction of the circuit breaker is reduced, which can be beneficial to the minimization of the circuit breaker in the height direction. In addition, while the moving contact is miniaturized, the driving force arm of the moving contact and the static contact can be larger, thereby reducing the driving force of the operating mechanism, which is beneficial to the operational stability of the operating mechanism. In addition, in the electric power equipment of the present application, the static iron core and the moving iron core assembly of the backup protector are arranged along the depth direction of the circuit breaker, so that the size of the backup protector in the height direction of the circuit breaker is reduced, which can further contribute to the minimization of the height direction of the circuit breaker. Moreover, when a fault current is detected, the static iron core of the backup protector generates an induced electromagnetic field when it is powered on, and the moving iron core assembly can move along the depth direction of the circuit breaker under the action of the magnetic force, so that the locking assembly can be controlled to drive the operating assembly to move, thereby separating the moving contact from the static contact. Therefore, in the circuit breaker, the backup protector uses a sliding method along the depth direction of the circuit breaker to control the operating mechanism, which can further contribute to the minimization of the height direction of the circuit breaker.

[0008] The above-mentioned current-carrying component also includes a wire, a first copper bar and a second copper bar. The first copper bar and the second copper bar are arranged relatively to each other along the height direction of the circuit breaker, and the first copper bar and the second copper bar extend along the depth direction of the circuit breaker. Among them, one end of the first copper bar close to the operating mechanism is electrically connected to the moving contact through a wire, and the static contact is arranged on the second copper bar and electrically connected to the second copper bar. Specifically, in a possible implementation, the static iron core is fixedly connected to the static contact. The moving iron core is electrically isolated from the static contact. In another possible implementation, the static iron core is fixedly connected to the first copper bar and electrically connected to the second copper bar through the first copper bar. The moving iron core is electrically isolated from the first copper bar. In another possible implementation, the static iron core is fixedly connected to the second copper bar and electrically connected to the first copper bar through the second copper bar. The moving iron core is electrically isolated from the second copper bar. In the above technical solution, the static iron core can directly detect the current-carrying current signal of the current-carrying component without the need to additionally set up a current-carrying component for the backup protector, further simplifying the structure of the circuit breaker.

[0009] The relative positions of the above-mentioned static iron core and moving iron core are not limited. In one possible implementation, the moving iron core can be located on the side of the static iron core close to the operating mechanism, and the static iron core generates a magnetic attraction to the moving iron core, so that the moving iron core assembly moves in a direction away from the operating mechanism. In the power equipment of the present application, along the depth direction of the circuit breaker, the moving iron core assembly can move in a direction away from the operating mechanism to drive the locking assembly. Of course, the moving iron core assembly can also move in a direction toward the operating mechanism to drive the locking assembly. In another possible implementation, the moving iron core can be located on the side of the static iron core away from the operating mechanism, and the static iron core generates a magnetic attraction to the moving iron core, so that the moving iron core assembly moves in a direction toward the operating mechanism.

[0010] The above-mentioned static iron core has a first magnetic surface, and the moving iron core has a second magnetic surface. The first magnetic surface is opposite to and parallel to the second magnetic surface, and the first magnetic surface and the second magnetic surface are respectively arranged at an angle to the depth direction of the circuit breaker. For example, in one possible implementation, the angle is 90 degrees, that is, the first magnetic surface and the second magnetic surface are respectively perpendicular to the depth direction of the circuit breaker. The electromagnetic field generated by the static iron core generates a magnetic force on the moving iron core parallel to the depth direction of the circuit breaker, so that the moving iron core can move along the depth direction of the circuit breaker. In another possible implementation, the angle is less than 90 degrees and greater than 0 degrees. The magnetic force generated by the electromagnetic field generated by the static iron core on the moving iron core has a component force parallel to the depth direction of the circuit breaker, so that the moving iron core can move along the depth direction of the circuit breaker.

[0011] In a possible implementation, the moving iron core assembly may further include an insulating rod, one end of the insulating rod is fixedly connected to the moving iron core, and the other end is relatively fixed to the lock assembly. When the moving iron core moves along the depth direction of the circuit breaker, the insulating rod moves with the moving iron core and drives the lock assembly to move. The moving iron core is transmission-connected to the lock assembly through the insulating rod, so that the backup protector and the operating mechanism can be electrically isolated, and in the depth direction of the circuit breaker, the backup protector can remotely control the operating mechanism.

[0012] In a possible implementation, the above-mentioned housing may include a cover body, a base and a bottom plate arranged in sequence along the height direction of the circuit breaker. The static contact and the static iron core are located on a side of the base close to the cover body, and the static contact is fixedly connected to the base. The static iron core is fixedly connected to the static contact. The moving iron core and the insulating rod are located on a side of the base close to the bottom plate, and the moving iron core is electrically isolated from the static contact. The base is provided with a guide groove, which extends along the depth direction of the circuit breaker, and the moving iron core is partially accommodated in the guide groove and can slide along the guide groove. The moving iron core is slidably connected to the base, and can be electrically isolated from the static contact through the base.

[0013] In a possible implementation, the insulating rod is provided with a strip opening. The strip opening extends along the depth direction of the circuit breaker, and a reset spring is provided in the strip opening. A reset stop is provided on the side surface of the base close to the bottom plate, and the reset stop extends into the strip opening and is located at the end of the strip opening away from the operating mechanism. One end of the reset spring is relatively fixed to the end of the strip opening close to the operating mechanism, and the other end is relatively fixed to the reset stop. The reset spring is used to reset the moving iron core assembly to the initial position, and to keep the moving iron core and the static iron core at a set distance when the moving iron core assembly is in the initial position. Specifically, when the moving iron core assembly is in the initial position, the magnetic force generated by the static iron core on the moving iron core is equal to the elastic force of the reset spring, so that the moving iron core assembly is maintained at the initial position. When the magnetic force generated by the static iron core on the moving iron core is greater than the elastic force of the reset spring, the magnetic force can cause the moving iron core assembly to move from the initial position along the depth direction of the circuit breaker. When the magnetic force generated by the static iron core on the moving iron core is smaller than the elastic force of the reset spring, the elastic force can move the moving iron core assembly along the depth direction of the circuit breaker until the moving iron core assembly is reset to the initial position.

[0014] In a possible implementation, the base and the bottom plate are respectively provided with an arc-shaped groove, and the arc-shaped groove extends along the depth direction of the circuit breaker. The arc-shaped groove of the base and the arc-shaped groove of the bottom plate are arranged opposite to each other, and form a space for accommodating the reset spring. Therefore, when the moving iron core moves along the depth direction of the circuit breaker, the reset spring can be compressed or stretched along the arc-shaped groove, thereby guiding and preventing the reset spring from getting stuck.

[0015] In one possible implementation, the static iron core may be a U-shaped static iron core, which is fixedly connected to a side of the static contact away from the base. The opening of the U-shaped static iron core is arranged toward the bottom plate, and both ends of the opening of the U-shaped static iron core extend into the guide groove. The moving iron core may be a U-shaped moving iron core. The opening of the U-shaped moving iron core is arranged toward the cover body, and both ends of the opening of the U-shaped moving iron core extend into the guide groove. In this technical solution, the static iron core and the moving iron core are respectively arranged on both sides of the static contact along the height direction of the circuit breaker, and partially extend into the guide groove. Therefore, at least in the guide groove, the static iron core has a part arranged opposite to the moving iron core in the depth direction of the circuit breaker, so that the magnetic force applied to the moving iron core has a component force along the depth direction of the circuit breaker, which facilitates the movement of the moving iron core along the depth direction of the circuit breaker.

[0016] In order to prevent the insulating rod from shifting in the width direction of the circuit breaker during movement, a limiting structure can be provided in the base. In a possible implementation, the insulating rod can be a T-shaped insulating rod, which includes an integrated mounting portion and a rod portion, and the mounting portion is fixedly connected to the moving iron core. The rod portion is located on a side of the mounting portion close to the operating mechanism and extends in the depth direction of the circuit breaker. A strip-shaped opening is provided on the rod portion. Two guide columns are provided on a surface of one side of the base close to the bottom plate, and the mounting portion is located on a side of the two guide columns away from the operating mechanism, and each of the two guide columns is used to abut against the mounting portion and the rod portion to limit the displacement of the insulating rod in the depth direction of the circuit breaker.

[0017] In order to prevent the moving iron core from being offset and stuck in the height direction of the circuit breaker during the movement, the base and the bottom plate may be provided with a limiting structure respectively. In a possible implementation, at least one first rib is provided on a side surface of the base close to the bottom plate, and at least one second rib is provided on a side surface of the bottom plate close to the base. The at least one first rib and the at least one second rib are arranged opposite to each other, and the at least one first rib and the at least one second rib extend along the depth direction of the circuit breaker. The moving iron core is located between the at least one first rib and the at least one second rib. Similarly, in order to prevent the insulating rod from being offset and stuck in the height direction of the circuit breaker during the movement, the base and the bottom plate may be provided with another limiting structure respectively. At least one third rib is provided on a side surface of the base close to the bottom plate, and at least one fourth rib is provided on a side surface of the bottom plate close to the base. The at least one third rib and the at least one fourth rib are arranged opposite to each other, and the at least one third rib and the at least one fourth rib extend along the width direction of the circuit breaker. The insulating rod is located between the at least one third rib and the at least one fourth rib.

[0018] In a possible implementation, the lock assembly includes a rotating half shaft, which can rotate relative to the housing, and the rotating half shaft is in transmission connection with the operating assembly. A slot is provided at one end of the insulating rod close to the operating mechanism, and a lever is provided on the circumferential surface of the rotating half shaft, and the lever is fixed in the slot. When the moving iron core moves along the depth direction of the circuit breaker, the insulating rod can drive the rotating half shaft to rotate, thereby converting the linear movement of the backup protector into the rotation of the rotating half shaft to drive the operating assembly to move.

[0019] In a second aspect, the present application provides a circuit breaker. The circuit breaker includes a housing, an operating handle, an operating mechanism, and a flow assembly. The operating handle is connected to the operating mechanism. The flow assembly includes a moving contact and a static contact, the moving contact can rotate relative to the housing, and the static contact is located on the side of the moving contact away from the operating mechanism along the depth direction of the circuit breaker. The operating handle, at least the part close to the operating mechanism, the operating mechanism, and the moving contact are sequentially arranged in the housing along the depth direction of the circuit breaker. The operating handle is used to control the operating mechanism to drive the moving contact to move so that the moving contact contacts or separates from the static contact. In addition, the operating mechanism includes a lock assembly and an operating assembly, the operating assembly is connected to the operating handle and the operating assembly is connected to the moving contact, and the lock assembly is used to lock or unlock the movement of the operating assembly. The circuit breaker may also include a backup protector, the backup protector includes a static iron core and a moving iron core assembly, the moving iron core assembly includes a moving iron core, and the static iron core and the moving iron core are sequentially arranged along the depth direction of the circuit breaker. The static iron core is relatively fixed to the housing, and the moving iron core is slidably connected to the housing. The moving iron core and the static iron core are arranged at intervals to electrically isolate the moving iron core from the static iron core. The lock assembly is in transmission connection with the moving iron core assembly. When the backup protector detects a fault current, the static iron core generates a magnetic force on the moving iron core and enables the moving iron core assembly to move along the depth direction of the circuit breaker, so as to control the lock assembly to drive the operating assembly to move, thereby separating the moving contact from the static contact.

[0020] The above-mentioned circuit breaker has a circuit breaker operating surface for the 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 direction 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 the 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 of the above-mentioned circuit breakers are installed in the 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.

[0021] In the circuit breaker of the present application, the part of the operating handle close to the operating mechanism, the operating mechanism, and the moving contact are arranged along the depth direction of the circuit breaker. It can be understood that the part of the operating handle, the operating mechanism, and the moving contact are arranged in a layered form along the depth direction of the circuit breaker, so that the layout of the components of the circuit breaker along the height direction can be reduced, thereby reducing the height dimension of the circuit breaker, and then reducing the occupied space of the circuit breaker, so as to increase the number of layouts of the circuit breaker in the cabinet. Among them, the circuit breaker includes a first layer (electric or manual operation layer), a second layer (operation layer), and a third layer (current passing layer). When the circuit breaker is specifically set, the operating handle is located on the first layer, the operating mechanism is located on the second layer, and the current passing component is located on the third layer. Among them, the moving contact can extend along the depth direction of the circuit breaker, so that the size of the moving contact in the height direction of the circuit breaker is reduced, which can be beneficial to the minimization of the circuit breaker in the height direction. In addition, while the moving contact is miniaturized, the driving force arm of the moving contact and the static contact can be larger, thereby reducing the driving force of the operating mechanism, which is beneficial to the operational stability of the operating mechanism. In addition, the static iron core and the moving iron core assembly of the backup protector are arranged along the depth direction of the circuit breaker, so that the size of the backup protector in the height direction of the circuit breaker is reduced, which can further contribute to the minimization of the height direction of the circuit breaker. Moreover, when a fault current is detected, the static iron core of the backup protector generates an induced electromagnetic field, and the moving iron core assembly can move along the depth direction of the circuit breaker under the magnetic force, so that the locking assembly can be controlled to drive the operating assembly to move, thereby separating the moving contact from the static contact. Therefore, in this circuit breaker, the backup protector uses a sliding method along the depth direction of the circuit breaker to control the operating mechanism, which can further contribute to the minimization of the height direction of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of an application scenario of a circuit breaker provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of an electric power device provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0025] Figure 4 Another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0026] Figure 5 Another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0027] Figure 6 Another schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0028] Figure 7A schematic diagram of a backup protector provided in an embodiment of the present application;

[0029] Figure 8 Another schematic diagram of a backup protector provided in an embodiment of the present application;

[0030] Fig. 9 Another schematic diagram of a backup protector provided in an embodiment of the present application;

[0031] Fig.10 Another schematic diagram of a backup protector provided in an embodiment of the present application;

[0032] Fig.11 A schematic diagram of the structure of a backup protector, a static contact and a lock assembly provided in an embodiment of the present application;

[0033] Fig.12 A schematic diagram of the structure of a housing provided in an embodiment of the present application;

[0034] Fig.13 A partial schematic diagram of a circuit breaker provided in an embodiment of the present application;

[0035] Fig.14 for Fig.13 Schematic diagram of the middle base and the stationary contact;

[0036] Fig.15 A schematic diagram of a base provided in an embodiment of the present application;

[0037] Fig.16 A schematic diagram of a base and a moving iron core assembly provided in an embodiment of the present application;

[0038] Fig.17 A schematic diagram of a moving iron core assembly provided in an embodiment of the present application;

[0039] Fig.18 A schematic diagram of a base and a moving iron core assembly provided in an embodiment of the present application;

[0040] Fig.19 A schematic diagram of a backup protector and a static contact provided in an embodiment of the present application;

[0041] Fig. 20 Another schematic diagram of a backup protector and a static contact provided in an embodiment of the present application;

[0042] Fig.21 A schematic diagram of a moving iron core assembly provided in an embodiment of the present application;

[0043] Fig. 22 A schematic diagram of a base plate provided in an embodiment of the present application;

[0044] Fig.23Another partial schematic diagram of a circuit breaker provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 10-Power supply and distribution system

[0047] 11-Power module

[0048] 20-Electrical equipment

[0049] 21-Cabinet

[0050] 210-User Operation Panel

[0051] 30-Circuit Breaker

[0052] 31- Shell

[0053] 32-Operation handle

[0054] 33-Operating mechanism

[0055] 34-Flow Components

[0056] 35-Interrupter

[0057] 36-Backup protector

[0058] 37-Arc extinguishing module

[0059] 311-cover

[0060] 312-Base

[0061] 313-base plate

[0062] 331-Operational Components

[0063] 332-Lock assembly

[0064] 341-Moving contact

[0065] 342-static contact

[0066] 343-First copper bar

[0067] 344-Second copper bar

[0068] 345-Wire

[0069] 361-static iron core

[0070] 362-Moving iron core assembly

[0071] 3121-Guide groove

[0072] 3122-Reset stop

[0073] 3123-First arc groove

[0074] 3124-Guide column

[0075] 3125-First rib

[0076] 3126-Third rib

[0077] 3131-Second arc groove

[0078] 3132-Second rib

[0079] 3133-Fourth rib

[0080] 3321-Rotating half shaft

[0081] 3322-Lever

[0082] 3621-Moving iron core

[0083] 3622-Insulation rod

[0084] 3623-Strip opening

[0085] 3624-Return spring

[0086] 36221-Installation Department

[0087] 36222-Rod

[0088] 36223-Card slot DETAILED DESCRIPTION

[0089] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0090] In order to facilitate understanding of the circuit breaker and power equipment provided in the embodiment of the present application, the application scenarios are 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. In an example provided in the present application, the circuit breaker can be used in the power supply and distribution system of the data center to connect, carry, and disconnect the current between the power supply network and the data center. Figure 1 A schematic diagram of an application scenario of a circuit breaker provided in an embodiment of the present application. Figure 1 As shown, the power supply and distribution system 10 may include a power module 11 (such as Figure 1As shown in the figure, there are a power module 11 composed of multiple UPS connected in series) and multiple circuit breakers. Take the power supply and distribution system 10 as an example, which is provided with three circuits, namely the first circuit C1, the second circuit C2, and the third circuit C3. A circuit breaker is provided in each circuit, wherein the first circuit C1 is connected to the power module 11, and a first circuit breaker K1 is provided at the input end of the power module 11, 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 a fourth circuit breaker K4 is provided.

[0091] 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 power-on and power-off states of the data center are controlled by controlling the closed state and the open state of the circuit breaker. When the electrical equipment in the data center needs to be inspected and 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, so as to facilitate the inspection and maintenance of the electrical equipment.

[0092] In addition, the circuit breaker of the present application can also be used in the power supply and distribution system 10 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 equipment with the power required for normal operation. When the power equipment needs to be inspected and maintained, the staff can switch the circuit breaker to the open state to facilitate the inspection and maintenance of the power equipment.

[0093] The power supply and distribution system 10 may specifically include a plurality of power equipment. Figure 2 A schematic diagram of an electric power device provided in an embodiment of the present application. Figure 2As shown, each power device 20 includes a cabinet 21, and a plurality of power modules (Q1, ..., Qn) and a plurality of circuit breakers (K1, ..., Km) located in the cabinet 21. Among them, the side of the cabinet 21 facing the staff is a user operation surface 210. In the present application, taking the state where the cabinet 21 is placed on the ground as an example, the dimension of the user operation surface 210 parallel to the ground is the width, the dimension of the user operation surface 210 perpendicular to the ground is the height, and the dimension of the cabinet 21 perpendicular to the user operation surface 210 is the depth. The aforementioned multiple power modules are stacked in sequence along the height direction H of the cabinet 21, 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 21. 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.

[0094] In the existing power equipment, the backup protector of the circuit breaker includes a static iron core, a moving iron core, a trip rod and a current-passing assembly, wherein the trip rod is transmission-connected to the moving iron core, and the current-passing assembly is electrically connected to the static iron core. When a fault current is detected, the static iron core generates an electromagnetic field and magnetically attracts the moving iron core, causing the moving iron core to rotate, thereby driving the trip rod to rotate, and then pushing the operating mechanism to complete the tripping protection. However, since the rotation path of the moving iron core is increased, the height dimension of the circuit breaker will be increased, and the miniaturization of the circuit breaker cannot be achieved; and the additional current-passing assembly is electrically connected to the static iron core, and the manufacturing cost is relatively high. Therefore, the present application provides a circuit breaker and power equipment to adjust the size of the backup protector in the height direction of the circuit breaker, which is conducive to the miniaturization of the circuit breaker, thereby changing 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.

[0095] 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 be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

[0096] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0097] Figure 3 A schematic diagram of a circuit breaker provided in an embodiment of the present application, Figure 4 Another schematic diagram of a circuit breaker provided in an embodiment of the present application, wherein: Figure 4 Show Figure 3 A cross-sectional view of the circuit breaker along the AA direction. Figure 3 and Figure 4As shown, the circuit breaker 30 includes a housing 31, an operating handle 32, an operating mechanism 33 and a flow assembly 34, and may further include an arc extinguishing chamber 35. Specifically, the operating handle 32 is connected to the operating mechanism 33. The flow assembly 34 includes a moving contact 341 and a static contact 342, and the moving contact 341 can rotate relative to the housing 31. In one embodiment, the end of the operating handle 32 away from the operating mechanism 33 can extend out of the housing 31 so that the staff can push the operating handle 32 to perform closing and opening operations. In another embodiment, the housing 31 is provided with a knob to realize the opening and closing of the circuit breaker 30 by manual operation of the knob. Specifically, the end of the operating handle 32 away from the operating mechanism 33 is connected to the knob. When the staff performs manual operation of the knob, the knob is turned and the operating handle 32 is driven to push along the height direction h of the circuit breaker 30. In another embodiment, the circuit breaker 30 may further include a remote controller and an electric operating device, the electric operating device is connected to the operating handle 32, and the electric operating device is connected to the remote controller in communication, so as to realize the opening and closing of the circuit breaker 30 by electric operation. When the staff performs electric operation, a closing command or an opening command is sent to the remote controller, and the remote controller can control the electric operating device to push the operating handle 32. In this embodiment, the staff can approach the circuit breaker 30 to issue the command, or can also issue the command remotely through the communication device. In addition, at least the part of the operating handle 32 close to the operating mechanism 33, the operating mechanism 33, the moving contact 341 and the arc extinguishing chamber 35 are sequentially arranged in the housing 31 along the depth direction d of the circuit breaker 30, and the static contact 342 is located on the side of the moving contact 341 away from the operating mechanism 33 along the depth direction d of the circuit breaker 30. The operating handle 32 is used to control the operating mechanism 33 to drive the moving contact 341 to move, so that the moving contact 341 contacts or separates from the static contact 342. The arc extinguishing chamber 35 is used to extinguish the arc generated when the moving contact 341 is separated from the static contact 342. In one embodiment, the static contact 342 is located on one side of the arc extinguishing chamber 35 along the height direction h of the circuit breaker 30. The movement trajectory of the moving contact 341 extends from the static contact 342 to the other side of the arc extinguishing chamber 35 along the height direction h of the circuit breaker 30.

[0098] Please continue reading Figure 4The operating mechanism 33 includes an operating assembly 331 and a locking assembly 332. The operating assembly 331 is connected to the operating handle 32 and the operating assembly 331 is connected to the moving contact 341. The locking assembly 332 is used to lock or unlock the movement of the operating assembly 331. The circuit breaker 30 also includes a backup protector 36. The backup protector 36 includes a static iron core 361 and a moving iron core assembly 362. The moving iron core assembly 362 includes a moving iron core 3621. The static iron core 361 and the moving iron core 3621 are sequentially arranged along the depth direction d of the circuit breaker 30. The static iron core 361 is relatively fixed to the housing 31, and the moving iron core 3621 is slidably connected to the housing 31. The moving iron core 3621 is spaced apart from the static iron core 361, so that the moving iron core 3621 is electrically isolated from the static iron core 361. The locking assembly 332 is transmission-connected to the moving iron core assembly 362. The backup protector 36 is used to generate an induced electromagnetic field when a fault current is detected, and to generate a magnetic force on the moving iron core 3621, so that the moving iron core assembly 362 can move along the depth direction d of the circuit breaker 30, so as to control the locking assembly 332 to drive the operating assembly 331 to move, thereby separating the moving contact 341 from the static contact 342.

[0099] In the present application, the side of the operating handle 32 extending out of the housing 31 is the circuit breaker operating surface 310. Taking the circuit breaker operating surface 310 as an example, the dimension of the circuit breaker 30 along the pushing direction of the operating handle 32 is the height, the dimension perpendicular to the height direction h is the width, and the dimension perpendicular to the circuit breaker operating surface 310 is the depth. In other words, the operating handle 32, the operating mechanism 33, the current-passing assembly 34 and the arc extinguishing chamber 35 are sequentially arranged along the depth direction d of the circuit breaker 30. When the circuit breaker 30 is placed in the cabinet 21, the height direction h of the circuit breaker 30 is in the same direction as the width direction W of the cabinet 21, the width direction w of the circuit breaker 30 is in the same direction as the height direction H of the cabinet 21, and the depth direction d of the circuit breaker 30 is in the same direction as the depth direction D of the cabinet 21. Therefore, when the staff performs the closing operation or the opening operation on the circuit breaker 30, the staff pushes the operating handle 32 along the width direction W of the cabinet 21. When the operating handle 32 is pushed to perform the opening or closing operation, the operating mechanism 33 can move with the operating handle 32 to drive the moving contact 341 to separate or contact with the static contact 342. When the moving contact 341 is in contact with the static contact 342, the circuit breaker 30 is in the closing state; when the moving contact 341 is separated from the static contact 342, the circuit breaker 30 is in the opening state. In the circuit breaker 30 of the present application, at least the part of the operating handle 32 close to the operating mechanism 33, the operating mechanism 33, the moving contact 341 and the arc extinguishing chamber 35 are arranged along the depth direction d of the circuit breaker 30, and are considered to be arranged in a layered form, so that the height h of the circuit breaker 30 can be reduced, and the occupied space of the circuit breaker 30 can be reduced, so as to increase the number of circuit breakers 30 that can be arranged in the cabinet 21. Specifically, the operating handle 32 is located at the first layer (electrical or manual operation layer), the operating mechanism 33 is located at the second layer (operating layer), a part of the current-passing assembly 34 is located at the third layer (current-passing layer), and the arc extinguishing chamber 35 is located at the fourth layer (arc extinguishing layer). Among them, the moving contact 341 can extend along the depth direction d of the circuit breaker 30, so that the size of the moving contact 341 in the height direction h of the circuit breaker 30 is reduced, which can be beneficial to minimizing the height direction h of the circuit breaker 30. In addition, while the moving contact 341 is miniaturized, the driving force arm of the moving contact 341 and the static contact 342 for closing the switch can be larger, thereby reducing the driving force of the operating mechanism 33, which is beneficial to the operational stability of the operating mechanism 33. In addition, in the electric power equipment 20 of the present application, the static iron core 361 and the moving iron core assembly 362 of the backup protector 36 are arranged along the depth direction d of the circuit breaker 30, so that the size of the backup protector 36 in the height direction h of the circuit breaker 30 is reduced, which can further facilitate the minimization of the height direction h of the circuit breaker 30. Moreover, when a fault current is detected, the static iron core 361 of the backup protector 36 generates an electromagnetic field, and the moving iron core assembly 362 moves along the depth direction d of the circuit breaker 30 under the magnetic force, so that the lock assembly 332 can be controlled to drive the operating assembly 331 to move, thereby separating the moving contact 341 from the static contact 342.Therefore, in the circuit breaker 30, the backup protector 36 controls the operating mechanism 33 in a sliding manner along the depth direction d of the circuit breaker 30, which can further facilitate minimization of the circuit breaker 30 in the height direction h.

[0100] Please continue reading Figure 4 , the current-passing assembly 34 also includes a first copper bar 343, a second copper bar 344 and a wire 345. The first copper bar 343 and the second copper bar 344 are arranged relatively to each other along the height direction h of the circuit breaker 30, and the first copper bar 343 and the second copper bar 344 extend along the depth direction d of the circuit breaker 30. Among them, one end of the first copper bar 343 close to the operating mechanism 33 is electrically connected to the moving contact 341 through the wire 345, and the static contact 342 is arranged on the second copper bar 344 and electrically connected to the second copper bar 344. Specifically, in one embodiment, the static iron core 361 is fixedly connected to the static contact 342, and the static iron core 362 is electrically connected to the static contact 362. The moving iron core 3621 is electrically isolated from the static contact 342. Figure 5 Another schematic diagram of a circuit breaker provided in an embodiment of the present application. Figure 4 and Figure 5 As shown, in another embodiment, the static iron core 361 is fixedly connected to the second copper bar 344, and when the moving contact 341 and the static contact 342 are in contact, the static iron core 361 is electrically connected to the first copper bar 343 through the second copper bar 344. The moving iron core 3621 is electrically isolated from the second copper bar 344. Figure 6 Another schematic diagram of a circuit breaker provided in an embodiment of the present application. Figure 6 As shown, in another embodiment, the static iron core 361 is fixedly connected to the first copper bar 343, and when the moving contact 341 and the static contact 342 are in contact, the static iron core 361 is electrically connected to the second copper bar 344 through the first copper bar 343. The moving iron core 3621 is electrically isolated from the first copper bar 343. In the above technical solution, the static iron core 362 can directly detect the through-current signal of the through-current component 34, without the need to additionally set a through-current component for the backup protector 36, further simplifying the structure of the circuit breaker 30.

[0101] The relative positions of the static iron core 361 and the moving iron core 3621 are not limited. Figure 7 A schematic diagram of a backup protector provided in an embodiment of the present application, Figure 8 Another schematic diagram of the backup protector provided in the embodiment of the present application. Figure 7 and Figure 8 As shown, in one embodiment, along the depth direction d of the circuit breaker 30, the moving iron core 3621 can be located on the side of the static iron core 361 close to the operating mechanism 33, and the static iron core 361 generates a magnetic attraction to the moving iron core 3621, causing the moving iron core assembly 362 to move in a direction away from the operating mechanism 33. Fig. 9Another schematic diagram of the backup protector provided in the embodiment of the present application, Fig.10 Another schematic diagram of the backup protector provided in the embodiment of the present application. Fig. 9 and Fig.10 As shown, in another embodiment, along the depth direction d of the circuit breaker 30, the moving iron core 3621 can be located on a side of the static iron core 361 away from the operating mechanism 33, and the static iron core 361 generates a magnetic attraction force on the moving iron core 3621, so that the moving iron core assembly 362 moves in a direction toward the operating mechanism 33. In the above embodiment, the backup protector 36 drives the lock assembly 332 to move by moving the moving iron core assembly 362 away from or toward the operating mechanism 33.

[0102] In the backup protector 36, the static iron core 361 has a first magnetic surface, and the moving iron core 3621 has a second magnetic surface. The first magnetic surface is opposite to and parallel to the second magnetic surface. Specifically, the first magnetic surface and the second magnetic surface are arranged at an angle to the depth direction d of the circuit breaker 30, that is, the first magnetic surface and the second magnetic surface are not parallel to the depth direction d of the circuit breaker 30. Figure 7 and Fig. 9 As shown, in one embodiment, the angle may be greater than 0 degrees and less than 90 degrees. Specifically, the electromagnetic field generated by the static iron core 361 exerts a magnetic force on the moving iron core 3621 with a component parallel to the depth direction d of the circuit breaker 30, so that the moving iron core 3621 can move along the depth direction d of the circuit breaker 30. Figure 8 and Fig.10 As shown, in another embodiment, the angle may be equal to 90 degrees, that is, the first magnetic attraction surface and the second magnetic attraction surface are respectively perpendicular to the depth direction d of the circuit breaker 30. Specifically, the electromagnetic field generated by the static iron core 361 generates a magnetic force on the moving iron core 3621 parallel to the depth direction d of the circuit breaker 30, so that the moving iron core 3621 can move along the depth direction d of the circuit breaker 30.

[0103] Fig.11 A schematic diagram of the structure of the backup protector, the static contact and the lock assembly provided in the embodiment of the present application. Fig.11As shown, the static iron core 361 is fixedly connected to the static contact 342, and the moving iron core 3621 can slide relative to the static contact 342. The moving iron core assembly 362 can also include an insulating rod 3622. One end of the insulating rod 3622 is fixedly connected to the moving iron core 3621, and the other end is relatively fixed to the lock assembly 332. When the moving iron core 3621 moves along the depth direction d of the circuit breaker 30, the insulating rod 3622 moves with the moving iron core 3621 and drives the lock assembly 332 to move. The moving iron core 3621 is transmission-connected to the lock assembly 332 through the insulating rod 3622, so that the backup protector 36 can be electrically isolated from the operating mechanism 33, and in the depth direction d of the circuit breaker 30, the backup protector 36 can remotely control the operating mechanism 33.

[0104] Fig.12 A schematic diagram of the structure of the housing provided in the embodiment of the present application. Fig.12 As shown, in one embodiment, the housing 31 may include a cover 311 , a base 312 , and a bottom plate 313 arranged in sequence along the height direction h of the circuit breaker 30 , and the cover 311 , the base 312 , and the bottom plate 313 may be buckled in sequence. Fig.13 A partial schematic diagram of a circuit breaker provided in an embodiment of the present application, Fig.14 for Fig.13 Schematic diagram of the base and the static contact. Fig.13 and Fig.14 As shown, the static contact 342 and the static iron core 361 are located on one side of the base 312 close to the cover 311, and the static contact 342 is fixedly connected to the base 312. The static iron core 361 is fixedly connected to the static contact 342. The moving iron core 3621 and the insulating rod 3622 are located on one side of the base 312 close to the bottom plate 313, and the moving iron core 3621 is electrically isolated from the static contact 342. Fig.15 A schematic diagram of a base provided in an embodiment of the present application, Fig.16 A schematic diagram of a base and a moving iron core assembly provided in an embodiment of the present application, wherein: Fig.15 and Fig.16 The side of the base facing the base plate is shown. Fig.15 and Fig.16 As shown, the base 312 is provided with a guide groove 3121, which extends along the depth direction d of the circuit breaker 30, and the movable iron core 3621 is partially accommodated in the guide groove 3121 and can slide along the guide groove 3121. The movable iron core 3621 is slidably connected to the base 312, and can be electrically isolated from the static contact 342 through the base 312.

[0105] Fig.17 A schematic diagram of a moving iron core assembly provided in an embodiment of the present application, Fig.18 A schematic diagram of a base and a moving iron core assembly provided in an embodiment of the present application. Fig.17 and Fig.18 As shown, the insulating rod 3622 is provided with a strip opening 3623. The strip opening 3623 extends along the depth direction d of the circuit breaker 30, and a reset spring 3624 is provided in the strip opening 3623. A reset stopper 3122 is provided on the side surface of the base 312 close to the bottom plate 313, and the reset stopper 3122 extends into the strip opening 3623 and is located at the end of the strip opening 3623 away from the operating mechanism 33. One end of the reset spring 3624 is relatively fixed to the end of the strip opening 3623 close to the operating mechanism 33, and the other end is relatively fixed to the reset stopper 3122. Figure 7 As shown, when the circuit breaker 30 is working normally, the moving iron core 3621 is in the initial position. At this time, the reset spring 3624 applies a force to the moving iron core 3621 toward the operating mechanism 33, and the static iron core 361 generates a magnetic attraction force to the moving iron core 3621 away from the operating mechanism 33. The force of the reset spring 3624 is equal to the magnetic attraction force of the static iron core 361 and is opposite in direction. In this way, the moving iron core 3621 and the static iron core 361 can maintain a set distance to achieve electrical and physical isolation. When the backup protector 36 detects a fault current, the magnetic attraction force generated by the static iron core 361 on the moving iron core 3621 increases instantaneously and is greater than the magnetic attraction force, so that the moving iron core 3621 moves in a direction away from the operating mechanism 33 under the action of the magnetic attraction force, thereby controlling the lock assembly 332 to drive the operating assembly 331 to move, so that the moving contact 341 is separated from the static contact 342. After the moving contact 341 is separated from the stationary contact 342, the moving iron core assembly 362 moves in the direction toward the operating mechanism 33 under the force of the reset spring 3624, so that the moving iron core assembly 362 is reset to the initial position. In the embodiment of the present application, in addition to the reset spring 3624, the strip opening 3623 can also be provided with a spring or other elastic element to achieve reset.

[0106] like Fig.14 As shown, a first arc-shaped groove 3123 is provided on one side surface of the base 312 facing the bottom plate 313, and a second arc-shaped groove 3131 is provided on one side surface of the bottom plate 313 facing the base 312. The first arc-shaped groove 3123 and the second arc-shaped groove 3131 extend respectively along the depth direction d of the circuit breaker 30. The first arc-shaped groove 3123 of the base 312 and the second arc-shaped groove 3131 of the bottom plate 313 are arranged opposite to each other, and form a space for accommodating the reset spring 3624. Therefore, when the moving iron core 3621 moves along the depth direction d of the circuit breaker 30, the reset spring 3624 can be compressed or stretched along the first arc-shaped groove 3123 and the second arc-shaped groove 3131, thereby guiding and preventing the reset spring 3624 from being stuck.

[0107] Fig.19 A schematic diagram of a backup protector and a static contact provided in an embodiment of the present application, Fig. 20Another schematic diagram of the backup protector and the static contact provided in the embodiment of the present application. Fig.19 and Fig. 20 As shown, the static iron core 361 can be a U-shaped static iron core, which is fixedly connected to the side of the static contact 342 away from the base 312. The opening of the U-shaped static iron core is arranged toward the bottom plate 313, and the two ends of the opening of the U-shaped static iron core extend into the guide groove 3121. The moving iron core 3621 can be a U-shaped moving iron core. The opening of the U-shaped moving iron core is arranged toward the cover body 311, and the two ends of the opening of the U-shaped moving iron core extend into the guide groove 3121. In this embodiment, the static iron core 361 and the moving iron core 3621 are respectively arranged on both sides of the static contact 342 along the height direction h of the circuit breaker 30, and partially extend into the guide groove 3121. Therefore, at least in the guide groove 3121, the static iron core 361 has a part which is arranged opposite to the moving iron core 3621 in the depth direction d of the circuit breaker 30, so that the magnetic force applied to the moving iron core 3621 has a component force along the depth direction d of the circuit breaker 30, thereby facilitating the movement of the moving iron core 3621 along the depth direction d of the circuit breaker 30.

[0108] In order to prevent the insulating rod 3622 from deviating along the width direction w of the circuit breaker 30 during movement, the base 312 may be provided with a limiting structure. Fig.21 A schematic diagram of a moving iron core assembly provided in an embodiment of the present application. Fig.21 As shown, in one embodiment, the insulating rod 3622 may be a T-shaped insulating rod, which includes an integral mounting portion 36221 and a rod portion 36222, wherein the mounting portion 36221 is fixedly connected to the moving iron core 3621. The rod portion 36222 is located on a side of the mounting portion 36221 close to the operating mechanism 33 and extends along the depth direction d of the circuit breaker 30. The strip opening 3623 is provided on the rod portion 36222. Fig.16 As shown, two guide columns 3124 are provided on one side surface of the base 312 close to the bottom plate 313, and the mounting portion 36221 is located on the side of the two guide columns 3124 away from the operating mechanism 33. Each of the two guide columns 3124 is used to abut against the mounting portion 36221 and the rod portion 36222 to limit the displacement of the insulating rod 3622 along the depth direction d of the circuit breaker 30.

[0109] In order to prevent the moving iron core 3621 from being deflected and stuck along the height direction h of the circuit breaker 30 during movement, the base 312 and the bottom plate 313 may be provided with limiting structures respectively. Fig. 22 A schematic diagram of a base plate provided in an embodiment of the present application. Fig.16 and Fig. 22As shown, in one embodiment, at least one first rib 3125 is provided on one side surface of the base 312 close to the bottom plate 313, and at least one second rib 3132 is provided on one side surface of the bottom plate 313 close to the base 312. The at least one first rib 3125 and the at least one second rib 3132 are arranged opposite to each other, and the at least one first rib 3125 and the at least one second rib 3132 extend along the depth direction d of the circuit breaker 30. The moving iron core 3621 is located between the at least one first rib 3125 and the at least one second rib 3132. Similarly, in order to prevent the insulating rod 3622 from being offset and stuck along the height direction h of the circuit breaker 30 during the movement, the base 312 and the bottom plate 313 may be respectively provided with another limiting structure. At least one third rib 3126 is disposed on one side surface of the base 312 close to the bottom plate 313, and at least one fourth rib 3133 is disposed on one side surface of the bottom plate 313 close to the base 312. The at least one third rib 3126 and the at least one fourth rib 3133 are disposed opposite to each other, and the at least one third rib 3126 and the at least one fourth rib 3133 extend along the width direction w of the circuit breaker 30. The insulating rod 3622 is located between the at least one third rib 3126 and the at least one fourth rib 3133.

[0110] Fig.23 Another partial schematic diagram of a circuit breaker provided in an embodiment of the present application. Fig.21 and Fig.23 As shown, in one embodiment, the lock assembly 332 includes a rotating half shaft 3321, which can rotate relative to the housing 31, and the rotating half shaft 3321 is in transmission connection with the operating assembly 331. A slot 36223 is provided at one end of the insulating rod 3622 close to the operating mechanism 33, and a lever 3322 is provided on the circumferential surface of the rotating half shaft 3321, and the lever 3322 is fixed in the slot 36223. When the moving iron core 3621 moves along the depth direction d of the circuit breaker 30, the insulating rod 3622 can drive the rotating half shaft 3321 to rotate, thereby converting the linear movement of the backup protector 36 into the rotation of the rotating half shaft 3321, so as to drive the operating assembly 331 to move.

[0111] like Figure 4 , Figure 5 and Figure 6As shown, in one embodiment, the circuit breaker 30 further includes an arc extinguishing module 37, and the arc extinguishing module 37 is used to purify the gas ejected from the arc extinguishing chamber 35. The arc extinguishing module 37 is located on the side of the arc extinguishing chamber 35 away from the operating mechanism 33 along the depth direction d of the circuit breaker 30, that is, the arc extinguishing module 37 is located in the fifth layer (arc extinguishing layer). An arc spraying port is provided between the arc extinguishing chamber 35 and the arc extinguishing module 37, and the arc spraying port is used to connect the arc extinguishing chamber 35 and the arc extinguishing module 37. The power equipment 20 further includes a circuit board located in the cabinet 21, and the circuit board and the plurality of circuit breakers 30 are arranged in sequence along the depth direction D of the cabinet 21, and the circuit board is arranged close to the arc extinguishing module 37. The arc extinguishing module 37 can absorb the electric ions ejected from the arc extinguishing chamber 35, so that the gas ejected from the circuit breaker 30 through the arc extinguishing module 37 can achieve completely zero arcing, thereby avoiding adverse effects on the circuit board of the power equipment 20.

[0112] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electric power device, characterized in that: The invention comprises 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; The circuit breaker comprises a housing, an operating handle, an operating mechanism and a flow assembly; the operating handle is connected to the operating mechanism; the flow assembly comprises a moving contact and a stationary contact, the moving contact can rotate relative to the housing, and the stationary contact is located on a side of the moving contact away from the operating mechanism along the depth direction of the circuit breaker; at least a portion of the operating handle close to the operating mechanism, the operating mechanism and the moving contact are sequentially arranged in the housing along the depth direction of the circuit breaker; the operating handle is used to control the operating mechanism to drive the moving contact to move, so that the moving contact contacts or separates from the stationary contact; The operating mechanism comprises a locking assembly and an operating assembly, wherein the operating assembly is connected to the operating handle and the operating assembly is connected to the moving contact, and the locking assembly is used to lock or unlock the movement of the operating assembly; The circuit breaker further includes a backup protector, the backup protector includes a static iron core and a moving iron core assembly, the moving iron core assembly includes a moving iron core, the static iron core and the moving iron core are sequentially arranged along the depth direction of the circuit breaker; the static iron core is relatively fixed to the housing, the moving iron core is slidably connected to the housing and is spaced apart from the static iron core; The locking assembly is transmission-connected to the moving iron core assembly; when a fault current is detected in the backup protector, the static iron core generates a magnetic force on the moving iron core, causing the moving iron core assembly to move along the depth direction of the circuit breaker, so as to control the locking assembly to drive the operating assembly to move, thereby separating the moving contact from the static contact.

2. The electric power equipment according to claim 1, characterized in that: The current-passing assembly further includes a wire, a first copper bar and a second copper bar, wherein the first copper bar and the second copper bar are arranged opposite to each other along the height direction of the circuit breaker, and the first copper bar and the second copper bar extend along the depth direction of the circuit breaker; an end of the first copper bar close to the operating mechanism is electrically connected to the moving contact through a wire, and the static contact is arranged on the second copper bar and electrically connected to the second copper bar; The static iron core is fixedly connected to the static contact, and the moving iron core is electrically isolated from the static contact; or, the static iron core is fixedly connected to the first copper bar and electrically connected to the second copper bar via the first copper bar, and the moving iron core is electrically isolated from the first copper bar; or, the static iron core is fixedly connected to the second copper bar and electrically connected to the first copper bar via the second copper bar, and the moving iron core is electrically isolated from the second copper bar.

3. The electric power equipment according to claim 1 or 2, characterized in that: The moving iron core is located on a side of the stationary iron core close to the operating mechanism; the stationary iron core generates a magnetic attraction force on the moving iron core, so that the moving iron core assembly moves in a direction away from the operating mechanism; or, The moving iron core is located on a side of the stationary iron core away from the operating mechanism; the stationary iron core generates a magnetic attraction force on the moving iron core, so that the moving iron core assembly moves in a direction toward the operating mechanism.

4. The electric power equipment according to claim 3, characterized in that: The static iron core has a first magnetic surface, the moving iron core has a second magnetic surface, the first magnetic surface is opposite to and parallel to the second magnetic surface, and the first magnetic surface and the second magnetic surface are respectively arranged at an angle to the depth direction of the circuit breaker.

5. The electric power equipment according to any one of claims 1 to 4, characterized in that: The moving iron core assembly also includes an insulating rod, one end of which is fixedly connected to the moving iron core, and the other end of which is relatively fixed to the locking assembly; when the moving iron core moves along the depth direction of the circuit breaker, the insulating rod moves with the moving iron core and drives the locking assembly to move.

6. The electric power equipment according to claim 5, characterized in that: The housing comprises a cover body, a base and a bottom plate which are sequentially arranged along the height direction of the circuit breaker; the static contact and the static iron core are located on a side of the base close to the cover body, the static contact is fixedly connected to the base, and the static iron core is fixedly connected to the static contact; the moving iron core and the insulating rod are located on a side of the base close to the bottom plate, and the moving iron core is electrically isolated from the static contact; The base is provided with a guide groove, and the guide groove extends along the depth direction of the circuit breaker. The moving iron core part is accommodated in the guide groove and can slide along the guide groove.

7. The electric power equipment according to claim 6, characterized in that: The insulating rod is provided with a strip opening, the strip opening extends along the depth direction of the circuit breaker, and a reset spring is provided in the strip opening; a reset stop is provided on the side surface of the base close to the bottom plate, the reset stop extends into the strip opening and is located at the end of the strip opening away from the operating mechanism; one end of the reset spring is relatively fixed to the end of the strip opening close to the operating mechanism, and the other end is relatively fixed to the reset stop; the reset spring is used to reset the moving iron core assembly to an initial position, and is used to keep the moving iron core and the static iron core at a set distance when the moving iron core assembly is located at the initial position.

8. The electric power equipment according to claim 7, characterized in that: The base and the bottom plate are respectively provided with an arc-shaped groove, and the arc-shaped groove extends along the depth direction of the circuit breaker; the arc-shaped groove of the base is arranged opposite to the arc-shaped groove of the bottom plate, and forms a space for accommodating the reset spring.

9. The electric power equipment according to claim 7 or 8, characterized in that: The static iron core is a U-shaped static iron core, the U-shaped static iron core is fixedly connected to a side of the static contact away from the base, the opening of the U-shaped static iron core is arranged toward the bottom plate, and both ends of the opening of the U-shaped static iron core extend into the guide groove; The moving iron core is a U-shaped moving iron core, and the opening of the U-shaped moving iron core is arranged toward the cover body, and both ends of the opening of the U-shaped moving iron core extend into the guide groove.

10. The electric power equipment according to any one of claims 7 to 9, characterized in that: The insulating rod is a T-shaped insulating rod, and the T-shaped insulating rod includes an integrated mounting portion and a rod portion, the mounting portion is fixedly connected to the moving iron core, the rod portion is located on a side of the mounting portion close to the operating mechanism, and extends along the depth direction of the circuit breaker; the strip-shaped opening is provided on the rod portion; Two guide columns are provided on a surface of one side of the base close to the bottom plate, the mounting portion is located on a side of the two guide columns away from the operating mechanism, and each of the two guide columns is used to abut against the mounting portion and the rod portion to limit the displacement of the insulating rod along the depth direction of the circuit breaker.

11. The electric power equipment according to any one of claims 6 to 10, characterized in that: The base is provided with at least one first rib on one side surface close to the bottom plate, and the bottom plate is provided with at least one second rib on one side surface close to the base, the at least one first rib and the at least one second rib are arranged opposite to each other, and the at least one first rib and the at least one second rib extend along the depth direction of the circuit breaker; the moving iron core is located between the at least one first rib and the at least one second rib; At least one third rib is provided on a side surface of the base close to the bottom plate, and at least one fourth rib is provided on a side surface of the bottom plate close to the base. The at least one third rib and the at least one fourth rib are arranged opposite to each other, and the at least one third rib and the at least one fourth rib extend along the width direction of the circuit breaker; the insulating rod is located between the at least one third rib and the at least one fourth rib.

12. The electric power equipment according to any one of claims 5 to 11, characterized in that: The lock assembly includes a rotating half shaft, which can rotate relative to the housing and is transmission-connected to the operating assembly; a slot is provided at one end of the insulating rod close to the operating mechanism, and a lever is provided on the circumferential surface of the rotating half shaft, and the lever is fixed in the slot; when the moving iron core moves along the depth direction of the circuit breaker, the insulating rod drives the rotating half shaft to rotate, so as to drive the operating assembly to move.

13. A circuit breaker, characterized in that: The circuit breaker comprises a housing, an operating handle, an operating mechanism and a flow assembly, wherein: The operating handle is connected to the operating mechanism; the current-passing assembly includes a moving contact and a stationary contact, the moving contact can rotate relative to the housing, and the stationary contact is located on a side of the moving contact away from the operating mechanism along the depth direction of the circuit breaker; at least a portion of the operating handle close to the operating mechanism, the operating mechanism and the moving contact are sequentially arranged in the housing along the depth direction of the circuit breaker; the operating handle is used to control the operating mechanism to drive the moving contact to move, so that the moving contact contacts or separates from the stationary contact; The operating mechanism comprises a locking assembly and an operating assembly, wherein the operating assembly is connected to the operating handle and the operating assembly is connected to the moving contact, and the locking assembly is used to lock or unlock the movement of the operating assembly; The circuit breaker further includes a backup protector, the backup protector includes a static iron core and a moving iron core assembly, the moving iron core assembly includes a moving iron core, the static iron core and the moving iron core are sequentially arranged along the depth direction of the circuit breaker; the static iron core is relatively fixed to the housing, the moving iron core is slidably connected to the housing and is spaced apart from the static iron core; The locking assembly is transmission-connected to the moving iron core assembly; when a fault current is detected in the backup protector, the static iron core generates a magnetic force on the moving iron core, causing the moving iron core assembly to move along the depth direction of the circuit breaker, so as to control the locking assembly to drive the operating assembly to move, thereby separating the moving contact from the static contact.

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