CN222601746U

CN222601746U - Conflux cabinet and energy storage system

Info

Publication number: CN222601746U
Application number: CN202420008138.5U
Authority: CN
Inventors: 姚鹏; 赵慧文; 张文博; 郭自德; 卢艳华; 余东旭
Original assignee: Ningde Times Future Energy Shanghai Research Institute Co ltd; Contemporary Amperex Technology Co Ltd
Current assignee: Ningde Times Future Energy Shanghai Research Institute Co ltd; Contemporary Amperex Technology Co Ltd
Priority date: 2024-01-02
Filing date: 2024-01-02
Publication date: 2025-03-11
Anticipated expiration: 2034-01-02

Abstract

The application is applicable to the technical field of energy storage, and provides a bus cabinet and an energy storage system, wherein the bus cabinet comprises a solid-state circuit breaker, a power supply unit and an electronic control unit, wherein the solid-state circuit breaker comprises a switch unit and an electronic control unit; the switch unit comprises an energy storage structure connecting end and a power structure connecting end, and the energy storage structure connecting end and the power structure connecting end are used for being electrically connected with internal elements of the solid-state circuit breaker; the electronic control unit is used for disconnecting the electric connection between the energy storage structure connecting end and the power structure connecting end; compared with the traditional circuit breaker which controls a switch through a mechanical contact, the solid-state circuit breaker has the advantages of high switching speed, difficulty in generating electric arcs and the like, and the situation that the voltage at the breaking position of the solid-state circuit breaker exceeds the breaking capacity of the solid-state circuit breaker after the solid-state circuit breaker is broken is difficult to generate electric arcs, so that the requirement of an energy storage system on quick breaking of the circuit breaker can be met.

Description

Conflux cabinet and energy storage system

Technical Field

The application belongs to the technical field of energy storage, and particularly relates to a bus cabinet and an energy storage system.

Background

With the development of strategic resources such as big data and nuclear power and heavy industry, the large-scale energy storage device is used as a backup power supply, so that the problem that important equipment cannot be powered off can be solved. Meanwhile, with the development of photovoltaic industry and wind energy industry, the large-scale energy storage device can solve the problems of photovoltaic off-grid energy storage and wind power energy storage, and solves the problems of active power quality optimization, reactive power compensation and the like of a photovoltaic power station. The market demand for energy storage is increasing, and the development of large-scale energy storage devices is increasing.

In the energy storage system, due to the existence of the compensation device, the voltage of the breaker during breaking can be quickly increased and exceeds the breaking capacity range of the breaker, the breaking process time of the breaker in the current bus cabinet is longer, the corresponding speed is slower, and the requirement of the energy storage system on quick breaking of the breaker cannot be met.

Disclosure of utility model

In view of the above problems, the application provides a bus cabinet and an energy storage system, which can relieve the problem that a circuit breaker in the bus cabinet applied to the energy storage system at present is not easy to meet the requirement of quick breaking.

In a first aspect, the present application provides a bus bar comprising:

The solid-state circuit breaker comprises a switch unit and an electronic control unit which is connected with the switch unit in a communication way;

The switch unit comprises an energy storage structure connecting end and a power structure connecting end, wherein the energy storage structure connecting end and the power structure connecting end are used for being electrically connected with internal elements of the solid-state circuit breaker, and the electronic control unit is used for disconnecting the electrical connection between the energy storage structure connecting end and the power structure connecting end.

In the technical scheme of the embodiment, the solid-state circuit breaker is arranged in the bus cabinet and is conducted or disconnected through the control circuit of the solid-state circuit breaker, compared with the traditional circuit breaker which is controlled by a mechanical contact, the solid-state circuit breaker is controlled electronically through a control signal of an electronic control unit, the electric arc breaker has the advantages of being high in switching speed, not prone to generating electric arcs and the like, the switch unit comprises an energy storage structure connecting end and a power structure connecting end, so that the solid-state circuit breaker is connected with the power structure and the energy storage structure, and when the solid-state circuit breaker is disconnected, the power structure is in a state of continuous charging and is prone to leading the voltage of the solid-state circuit breaker to be fast raised, and after the solid-state circuit breaker is disconnected, the situation that the voltage exceeds the breaking capacity of the solid-state circuit breaker is not prone to generating electric arcs at the disconnection position is avoided, so that the requirement of the bus cabinet on quick breaking of the circuit breaker can be met.

In some embodiments, the bus bar cabinet further comprises a bus bar power supply electrically connected between the main bus bar of the bus bar cabinet and the solid state circuit breaker, and a redundant power supply electrically connected between the external power supply and the solid state circuit breaker.

According to the technical scheme, the solid-state circuit breaker is connected with the main bus of the bus cabinet through the bus power supply, the bus power supply can convert the voltage input by the main bus of the bus cabinet and output the voltage meeting the requirements of the solid-state circuit breaker, so that the main bus of the bus cabinet can supply power to the solid-state circuit breaker, the redundant power supply capable of supplying power to the solid-state circuit breaker is further arranged, the redundant power supply is connected with the external power supply, and when any one of the bus power supply and the external power supply fails, the other one of the bus power supply and the external power supply still can supply power to the solid-state circuit breaker, so that the condition that the solid-state circuit breaker fails due to power supply failure is reduced.

In some embodiments, the bus bar further comprises a first redundant component;

The first redundant assembly is electrically connected between the bus power supply and the fixed circuit breaker, and between the redundant power supply and the solid state circuit breaker, such that both the bus power supply and the redundant power supply are capable of providing power to the solid state circuit breaker through the first redundant assembly.

In the technical scheme of the embodiment, the first redundant component is arranged and is electrically connected with the external power supply, the bus power supply and the solid-state circuit breaker, so that the bus power supply and the external power supply can supply power to the solid-state circuit breaker through the first redundant component, and when any one of the bus power supply and the external power supply fails, the other one of the bus power supply and the external power supply can still supply power to the solid-state circuit breaker, so that the occurrence of failure of the solid-state circuit breaker due to power supply failure is reduced.

In some embodiments, the bus bar further comprises a control component and a second redundancy component;

The second redundant assembly is electrically connected between the bus power supply and the control assembly, and between the redundant power supply and the control assembly, so that the bus power supply and the redundant power supply can supply power to the control assembly through the second redundant assembly.

In the technical scheme of the embodiment, the second redundant component is arranged in the bus cabinet and is electrically connected with the external power supply, the bus power supply and the control component, so that the bus power supply and the external power supply can supply power to the control component through the second redundant component, and when any one of the bus power supply and the external power supply fails, the other one of the bus power supply and the external power supply can still supply power to the control component, so that the condition that the control component fails due to power supply failure is reduced.

In some embodiments, the control assembly is communicatively coupled to the solid state circuit breaker.

In the technical scheme of the embodiment, the control component is in communication connection with the solid-state circuit breaker, so that the control component can also control the state of the solid-state circuit breaker, and therefore, the control component and the control unit of the solid-state circuit breaker can both control the circuit breaker in the solid-state circuit breaker, and when any one of the control component and the control unit of the solid-state circuit breaker breaks down, the other one of the control component and the control unit of the solid-state circuit breaker can still control the state of the circuit breaker in the solid-state circuit breaker, so that the condition that the solid-state circuit breaker fails due to the fault of a control system is reduced.

In some embodiments, the bus bar further comprises a switching power supply;

And a switching power supply is arranged between the control component and the second redundant component, or a switching power supply is arranged between the bus power supply and the second redundant component and between the redundant power supply and the second redundant component.

In the technical scheme of the embodiment, a switching power supply is arranged in the bus cabinet, so that the voltage of the bus power supply is converted into the voltage required by the control component through the switching power supply, and the voltage requirement of the control component is met.

In some embodiments, the bus bar cabinet further comprises a cabinet body comprising a first receiving chamber and a second receiving chamber, the solid state circuit breaker being housed in the first receiving chamber, and the bus bar power supply, the redundant power supply, and the control assembly being housed in the second receiving chamber.

In the technical scheme of the embodiment, the first accommodating chamber and the second accommodating chamber are arranged in the cabinet body of the bus cabinet, the solid-state circuit breaker is accommodated through the first accommodating chamber, the bus power supply, the redundant power supply and the control component are accommodated through the second accommodating chamber, more heat is generated in the working process of the solid-state circuit breaker, the working environment of the bus power supply, the redundant power supply and the control component is not too high, the solid-state circuit breaker is separated from the bus power supply, the redundant power supply and the control component through the first accommodating chamber and the second accommodating chamber, and the solid-state circuit breaker, the bus power supply, the redundant power supply and the control component are located in different working spaces, so that negative influences, caused by high temperature generated by the working of the solid-state circuit breaker, on the bus power supply, the redundant power supply and the control component, can be relieved.

In some embodiments, the first receiving chamber is disposed above the second receiving chamber along the direction of gravity.

According to the technical scheme, the first accommodating chamber is arranged above the second accommodating chamber, and the first accommodating chamber is used for accommodating the solid-state circuit breaker, and hot air can generally rise, so that the first accommodating chamber is arranged above the second accommodating chamber, hot air entering the second accommodating chamber is reduced, and negative influences, possibly caused by high temperature generated by the operation of the solid-state circuit breaker, on a bus power supply, a redundant power supply and a control assembly can be further relieved.

In some embodiments, the bus cabinet further comprises a fuse disposed within the cabinet body, the fuse electrically connected to the energy storage structure connection end of the solid state circuit breaker.

In the technical scheme of the embodiment, the fuse is arranged and connected between the solid-state circuit breaker and the power module so as to protect the solid-state circuit breaker and other devices in the bus cabinet, and when the current in the circuit exceeds a preset value, the fuse can be fused to protect the solid-state circuit breaker and other devices in the bus cabinet.

In some embodiments, the bus bar further comprises a third receiving chamber in which the fuse is received;

The third accommodating chamber and the first accommodating chamber are respectively arranged on two opposite sides of the second accommodating chamber.

In the technical scheme of this embodiment, set up the third accommodation chamber that is used for holding the fuse in the conflux cabinet to make third accommodation chamber and first accommodation chamber locate the relative both sides of second accommodation chamber respectively, in order to separate third accommodation chamber and first accommodation chamber through the second accommodation chamber, in order to alleviate the first negative influence that the room probably caused the fuse that holds.

In some embodiments, the cabinet body is provided with a heat dissipation structure, and the heat dissipation structure is at least opposite to the first accommodating chamber.

In the technical scheme of this embodiment, because the solid-state circuit breaker in the first accommodation room generates heat higher, make heat radiation structure at least with first accommodation room relatively to better play the heat dissipation effect, alleviate the condition that the interior temperature of conflux cabinet is too high, also can further alleviate the high temperature that the work of solid-state circuit breaker produced and probably to generating negative effect that busbar power, redundant power, control assembly caused.

In some embodiments, the heat dissipation structure includes a heat dissipation hole formed in the cabinet.

According to the technical scheme, the convergence cabinet can realize cooling through natural heat dissipation, so that the negative influence of air-cooled devices such as fans on the reliability and stability of the convergence cabinet is improved, and the heat dissipation cost is reduced.

In some embodiments, a viewing window is provided on the cabinet.

In the technical scheme of the embodiment, the observation window is formed in the cabinet body, so that a worker can check the condition inside the cabinet body conveniently.

In some embodiments, a cabinet door is rotatably connected to the cabinet body;

Along the direction of gravity, the cabinet door top is equipped with the shielding structure who connects in the cabinet body, and shielding structure is protruding in the cabinet body along the directional cabinet door's of cabinet body direction.

In the technical scheme of the embodiment, the cabinet door is arranged, so that devices in the first accommodating chamber, the second accommodating chamber and the third accommodating chamber are protected in the cabinet body through the cabinet door, the influence of the external environment on each component in the cabinet body is reduced, and the shielding structure is arranged above the cabinet door, so that the condition that rainwater or other sundries enter the cabinet body along a gap of the cabinet door is reduced, and the influence of the external environment on each component in the cabinet body can be further reduced.

In a second aspect, some embodiments of the present application provide an energy storage system comprising a bus bar provided by some embodiments of the first aspect, and

The power module is electrically connected with the solid-state circuit breaker;

The power module includes a compensation device electrically connected to the solid state circuit breaker.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a bus cabinet according to some embodiments of the present application.

Fig. 2 is a schematic diagram of electrical connection of an energy storage system according to some embodiments of the present application.

Fig. 3 is an electrical connection schematic diagram of an internal structure of a bus cabinet according to some embodiments of the present application.

Fig. 4 is a schematic front view of a bus bar cabinet with a cabinet door removed according to some embodiments of the present application.

The meaning of the labels in the figures is:

100. A junction box;

10. The cabinet comprises a cabinet body, a first accommodating chamber, a second accommodating chamber, a third accommodating chamber, a heat dissipation structure, an observation window, a cabinet door, a shielding structure and a cabinet door, wherein the cabinet body comprises a cabinet body, a first accommodating chamber, a second accommodating chamber, a third accommodating chamber, a heat dissipation structure, a cabinet door and a shielding structure;

21. Solid-state circuit breaker, 22, fuse, 23, bus power supply, 24, redundant power supply, 25, first redundant component, 26, second redundant component, 27, switching power supply, 28, control component;

200. An energy storage system;

30. A power module 31, a compensation device;

40. And a power supply module.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, the terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the above description of the drawings are intended to cover non-exclusive inclusions.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B, and may indicate that a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "fixed" and the like are to be construed broadly and include, for example, fixed connection, detachable connection, or integral therewith, mechanical connection, electrical connection, direct connection, indirect connection via an intermediary, communication between two elements, or interaction between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

With the development of strategic resources such as big data and nuclear power and heavy industry, the large-scale energy storage device is used as a backup power supply, so that the problem that important equipment cannot be powered off can be solved. Meanwhile, with the development of photovoltaic industry and wind energy industry, the large-scale energy storage device can solve the problems of photovoltaic off-grid energy storage and wind power energy storage, and solves the problems of active power quality optimization, reactive power compensation and the like of a photovoltaic power station. The market demand for energy storage is increasing, and the development of large-scale energy storage is increasing.

In the case of energy storage systems or high-voltage operation, circuit breakers are usually provided in the bus bar in order to open the circuit to which they are connected by means of the circuit breakers. The circuit breaker of the bus cabinet is usually a disconnecting switch, but the disconnecting switch does not have the capacity of breaking under load, so that the breaking operation of the disconnecting switch is needed to be performed after the energy storage valve is temporarily locked through the energy storage valve control system of the energy storage system. Although the method can meet the breaking requirement, the complexity and the design difficulty of the control logic of the energy storage valve control system are increased.

At present, a bus cabinet adopting a mechanical circuit breaker also exists, but the mechanical circuit breaker mainly achieves the purpose of breaking through the mechanical displacement of a movable contact and a fixed contact, the process requires relatively long time (usually a few milliseconds), and an arc is easy to generate in the mechanical displacement process of the contacts. However, in a high-voltage working condition, the response speed of the mechanical circuit breaker cannot meet the breaking requirement, and the breaking reliability is poor. In the energy storage system, the power supply module continuously charges the compensation device to enable the voltage at two ends of the compensation device to continuously rise due to the existence of the compensation device (such as a capacitor), when the mechanical circuit breaker is in a breaking state, the compensation device is still in a charging state, so that the voltage at two ends of the mechanical circuit breaker is easily increased rapidly and exceeds the breaking capacity of the mechanical circuit breaker, the time required for the voltage to be increased to exceed the breaking capacity of the mechanical circuit breaker is usually in a microsecond level, namely the mechanical circuit breaker is not easy to complete breaking before the voltage carried by the mechanical circuit breaker exceeds the breaking capacity, and the requirement of the energy storage system on the breaking capacity of the circuit breaker in the bus cabinet is not easy to be met.

Based on the above considerations, in order to meet the requirement of the energy storage system for the breaking capacity of the circuit breaker in the bus-bar cabinet, some embodiments of the present application provide a bus-bar cabinet, in which the solid-state circuit breaker is used to electrically isolate and disconnect the connected circuits. Because the breaking speed of the solid-state circuit breaker is faster (can reach microsecond level), and the solid-state circuit breaker is not easy to generate electric arc or spark, the solid-state circuit breaker can meet the requirement of the breaking capacity of the bus cabinet under the high-voltage working condition.

In the use process of the bus cabinet, when the solid-state circuit breaker is turned on or off, the electronic control unit can control the switch unit to be turned on or off through preset parameters and programs or received signals, so that microsecond-level rapid breaking can be achieved, an electric arc is not easy to occur, the service life of the bus cabinet can be prolonged, and the service life, reliability and stability of the bus cabinet can be prolonged.

In the energy storage system, the compensation device can lead the voltage of the solid-state circuit breaker to rise rapidly, but the solid-state circuit breaker can complete the breaking action before the voltage exceeds the breaking capacity of the solid-state circuit breaker, the condition that the voltage at the breaking position exceeds the loading capacity of the solid-state circuit breaker after the solid-state circuit breaker is broken is difficult to occur, and the electric arc is difficult to occur.

The bus cabinet disclosed by the embodiment of the application can be used in various high-voltage energy storage systems. The high voltage energy storage system may be, but is not limited to being, applied on the power source side, the grid side, the consumer side, etc. The power source side can comprise renewable energy source grid connection, the power grid side can comprise power grid transmission and distribution to auxiliary services, and the user side can comprise a home or industrial park.

For convenience of description, the following embodiments will take an example in which the bus 100 is applied to a high-voltage energy storage system on the grid side.

In a first aspect, some embodiments of the present application provide a bus bar 100, refer to fig. 1, fig. 2, and fig. 3, where fig. 1 is a schematic perspective view of the bus bar 100 provided in some embodiments of the present application, fig. 2 is an electrical connection schematic view of the bus bar 100 and connected power modules 30 and 40 provided in some embodiments of the present application, and fig. 3 is an electrical connection schematic view of an internal structure of the bus bar 100 provided in some embodiments of the present application.

In some embodiments of the present application, the bus 100 includes a solid state circuit breaker 21, the solid state circuit breaker 21 includes a switching unit and an electronic control unit communicatively connected to the switching unit, the electronic control unit being configured to control opening of the switching unit to control opening of the solid state circuit breaker 21.

The solid state circuit breaker 21 is a contactless switching device, the solid state circuit breaker 21 controls the current flow mainly by controlling the conduction state of a semiconductor element, the solid state circuit breaker 21 generally comprises a trigger, the trigger comprises a power transistor, the trigger can turn on or off the power transistor through a received control signal, so that the circuit is conducted and cut off, when the trigger controls the power transistor to be turned off, the solid state circuit breaker 21 can cut off the current in the circuit rapidly, and the cutting-off speed generally only needs a few microseconds to protect the bus cabinet 100 and workers.

The switching unit refers to an electronic device for controlling the opening and closing of a circuit in the solid-state breaker 21, and the electronic device may have one or two or more electronic devices, and a plurality of electronic devices may be connected in series, in parallel, or both in series and parallel, and the switching unit may be a power transistor, for example.

The energy storage structure connection terminal and the power structure connection terminal are respectively provided with two connection terminals in the switch unit, and are electrically connected with each other, and can be electrically connected with other elements inside the solid-state circuit breaker 21, and can also be electrically connected with external electrical equipment, for example, in the energy storage system, the power module 40 and the compensation device 31 can be respectively connected to the energy storage structure connection terminal and the power structure connection terminal, so that the power module 40 and the compensation device 31 are electrically connected through the switch unit.

The electronic control unit refers to a structure of the solid-state circuit breaker 21 for controlling the switch unit to be turned on and off, and the structure can comprise a single chip microcomputer, and the driving circuit is used for controlling the electric signal to be transmitted to control the switch unit to be turned on and off, so that the solid-state circuit breaker 21 has an accelerated response speed, and the electronic control unit can disconnect the electric connection between the energy storage structure connecting end and the power structure connecting end.

The electronic control unit may control the switching-on and switching-off of the switching unit by a preset program, parameter or received signal, and may be a trigger, for example.

Since the bus bar needs to be equipped with a circuit breaker to meet the requirement of circuit breaking (e.g., the requirement of reducing short-circuit arc) in the high-voltage (e.g., 1500V) condition, the bus bar 100 with the solid state circuit breaker 21 in this embodiment may refer to the bus bar applied in the high-voltage condition.

For example, the bus-bar 100 may be applied in a high-voltage energy storage system, where the solid-state circuit breaker 21 is electrically connected between the power module 30 and the power module 40 of the energy storage system 200, where the power module 30 is typically a capacitor, and may also be other devices capable of storing and releasing electric energy, and due to the existence of the power module 30, when the solid-state circuit breaker 21 breaks, the power module 30 will discharge and cause the voltage carried by the solid-state circuit breaker 21 to rise rapidly, but due to the fast response speed of the solid-state circuit breaker 21, the solid-state circuit breaker 21 can complete the breaking action before the voltage rises beyond the breaking capability thereof, so as to meet the requirement.

The circuit breakers in the current buss-box 100 are typically mechanical circuit breakers that respond slowly (typically in the order of milliseconds) and are prone to arcing. Accordingly, the solid state breaker 21 is disposed in the bus cabinet 100, and the circuit is controlled to be turned on or off by the solid state breaker 21, and the solid state breaker 21 is enabled to be connected between the power module 40 and the power module 30 in this embodiment, because the solid state breaker 21 has the advantages of fast switching speed (microsecond level), difficulty in generating electric arc, and the like, the response speed of the solid state breaker 21 can adapt to the rising speed of the voltage, so that the voltage at the breaking position of the solid state breaker 21 after the solid state breaker 21 is broken is less likely to exceed the load capacity of the solid state breaker 21, and the electric arc is less likely to be generated, thereby meeting the requirements of the energy storage system 200 on the breaker.

In some embodiments, the cabinet 10 is a structure mainly used for providing a fixed foundation for the solid state circuit breaker 21 and other electrical components, the cabinet 10 can also be used for protecting the solid state circuit breaker 21 and other electrical components, the cabinet 10 can be made of metal, plastic, wood or other various materials, and the cabinet 10 can be rectangular, cylindrical or other shapes.

Further, because the bus bar 100 is applied in a high voltage condition, interference (such as high voltage discharge) between the bus bar 100 and another adjacent bus bar 100 or other high voltage devices in the high voltage condition is easy to occur.

To reduce such interference, an insulating member may be provided on the cabinet 10, and the insulating member may be an insulating coating and coated on an inner wall or an outer wall of the cabinet 10, or the insulating member may be an insulating shield covering electronic components in the cabinet 10, or the insulating member may be an electronic device such as an insulating switch provided in the cabinet 10.

Referring to fig. 2 and 3, fig. 2 is an electrical connection schematic diagram of the bus bar 100 and the power modules 30 and 40 connected to each other according to some embodiments of the present application, and fig. 3 is an electrical connection schematic diagram of an internal structure of the bus bar 100 according to some embodiments of the present application.

In some embodiments of the present application, the bus bar cabinet 100 further includes a bus bar power supply 23 and a redundant power supply 24, wherein the bus bar power supply 23 is electrically connected between the main bus bar of the bus bar cabinet 100 and the solid state circuit breaker 21, and the redundant power supply 24 is electrically connected between the external power supply and the solid state circuit breaker 21.

The main bus refers to a power distribution structure for distributing current to each device in the bus cabinet 100, and can be electrically connected to the power module 40 to distribute current to each connected device, wherein the main bus can be a rectangular bus, a round bus, a tubular bus or buses with other shapes, and can also be aluminum stranded wires, copper stranded wires, expanded hollow wires or buses with other types.

The bus power supply 23 refers to a device in the bus cabinet 100, which can be connected with a main bus and can change output voltage, the bus power supply 23 is electrically connected between the main bus and the solid-state breaker 21, that is, the bus power supply 23 can receive current distributed by the main bus and can output current to the solid-state breaker 21, the bus power supply 23 can receive voltage input by the main bus and can output voltage different from the voltage of the main bus so as to adapt to the requirement of the solid-state breaker 21, and the bus power supply 23 can comprise a transformer or other structures.

The redundant power supply 24 is a structure in the bus bar 100 capable of receiving current of an external power supply and outputting current, that is, the redundant power supply 24 can be electrically connected with the external power supply, and the external power supply can be a main bus bar of another bus bar or a main bus bar in a module of a previous stage of the bus bar 100, and the external power supply can also be other structures with power supply capability.

The redundant power supply 24 and the bus power supply 23 are both capable of supplying power to the solid state circuit breaker 21, and when either one of the bus power supply 23 and the external power supply fails, the other one of the two is still capable of supplying power to the solid state circuit breaker 21. In some embodiments, the redundant power supply 24 and the bus power supply 23 may be provided with switches to control the states of the redundant power supply 24 and the bus power supply 23 through the switches to control the redundant power supply 24 and the bus power supply 23 to supply power to the solid state circuit breaker 21, in other embodiments, the redundant power supply 24 and the solid state circuit breaker 21, the bus power supply 23 and the solid state circuit breaker 21 may be provided with switching devices, and the on-off states between the redundant power supply 24 and the solid state circuit breaker 21, and the bus power supply 23 and the solid state circuit breaker 21 may be controlled through the switching devices to control the states of the redundant power supply 24 and the bus power supply 23 to supply power to the solid state circuit breaker 21, it will be understood that the power supply states of the redundant power supply 24 and the bus power supply 23 may be controlled through other modes, and are not limited to the two modes.

Since the voltage on the main bus is generally higher and the voltage required by the solid state breaker 21 is generally relatively lower, according to this embodiment, the solid state breaker 21 is connected to the main bus through the bus power supply 23, the bus power supply 23 can convert the voltage input by the main bus and output the voltage meeting the requirement of the solid state breaker 21, so that the main bus can supply power to the solid state breaker 21, a redundant power supply 24 capable of supplying power to the solid state breaker 21 is further provided, and the redundant power supply 24 is connected to an external power supply, when either one of the bus power supply 23 and the external power supply fails, the other one of the bus power supply 23 and the external power supply can still supply power to the solid state breaker 21, so as to reduce the occurrence of failure of the solid state breaker 21 due to power supply failure.

In some embodiments, the main bus, the bus power supply 23 and the redundant power supply 24 may be directly disposed on the inner side wall of the cabinet 10, or may be respectively connected to the cabinet 10 through structural members, and the main bus, the bus power supply 23 and the redundant power supply 24 may also be disposed in the cabinet 10 in other manners.

Referring to fig. 3, in some embodiments, the bus 100 further includes a first redundancy assembly 25, the first redundancy assembly 25 being electrically connected between the bus power supply 23 and the solid state circuit breaker 21, and between the redundancy power supply 24 and the solid state circuit breaker 21, such that both the bus power supply 23 and the redundancy power supply 24 are capable of providing power to the solid state circuit breaker 21 through the first redundancy assembly 25.

The first redundancy assembly 25 refers to a structure capable of receiving current and outputting the current in the bus bar 100.

The first redundant assembly 25 is connected with the bus power supply 23 and the redundant power supply 24, namely, the first redundant assembly 25 can receive current input by the bus power supply 23 and the redundant power supply 24, the first redundant assembly 25 is also connected with the solid-state circuit breaker 21, namely, the first redundant assembly 25 can output current to the solid-state circuit breaker 21 to supply power to the solid-state circuit breaker 21, the bus power supply 23 indirectly supplies power to the solid-state circuit breaker 21 through the first redundant assembly 25, and the first redundant assembly 25 can comprise a rectifier, a double-in single-out circuit or other structures.

The redundant power supply 24 and the bus power supply 23 are each capable of powering a first redundant component 25, the first redundant component 25 being capable of powering the solid state circuit breaker 21 upon receiving current provided by either the redundant power supply 24 or the bus power supply 23 to power operation of the solid state circuit breaker 21.

In this embodiment, the first redundant component 25 is disposed, and the first redundant component 25 is electrically connected to the external power source, the bus power source 23 and the solid-state circuit breaker 21, so that the bus power source 23 and the external power source can both supply power to the solid-state circuit breaker 21 through the first redundant component 25, when any one of the bus power source 23 and the external power source fails, the other one of the bus power source 23 and the external power source can still supply power to the solid-state circuit breaker 21, so as to reduce the occurrence of failure of the solid-state circuit breaker 21 due to power supply failure.

Referring to fig. 3, in some embodiments, the bus bar 100 further includes a control assembly 28 and a second redundant assembly 26, the second redundant assembly 26 being electrically connected between the bus bar power supply 23 and the control assembly 28, and between the redundant power supply 24 and the control assembly 28, such that the bus bar power supply 23 and/or the redundant power supply 24 can each provide power to the control assembly 28 via the second redundant assembly 26, improving the stability of the bus bar 100.

The control module 28 refers to a structure for controlling the operation state of the electrical components thereof in the bus cabinet 100, and the control module 28 may include a switch control structure, a baseboard management control structure, or other control structure. In some examples, the control assembly 28 is disposed within the cabinet 10, for example, the control assembly 28 may be disposed directly on an inside wall of the cabinet 10, the control assembly 28 may also be indirectly connected to the cabinet 10 through structural members, and in some examples, the control assembly 28 may send a signal to an electronic control unit of the solid state circuit breaker 21 to enable the electronic control unit to receive the signal and control the opening and closing of the switching unit.

The second redundancy assembly 26 refers to a structure in the bus bar 100 capable of receiving current and outputting the current.

The second redundant assembly 26 is connected to both the bus power supply 23 and the redundant power supply 24, i.e., the second redundant assembly 26 is capable of receiving current from the bus power supply 23 and the redundant power supply 24, and is also connected to the control assembly 28, i.e., the second redundant assembly 26 is capable of outputting current to the control assembly 28 to power the control assembly 28, and the second redundant assembly 26 may include a rectifier, a dual-in single-out circuit, or other configuration.

The redundant power supply 24 and the bus power supply 23 are each capable of powering a second redundant component 26, the second redundant component 26 being capable of powering the control component 28 upon receiving current provided by either the redundant power supply 24 or the bus power supply 23 to power operation of the control component 28.

In this embodiment, the second redundant assembly 26 is disposed in the bus bar 100, and the second redundant assembly 26 is electrically connected to the external power source, the bus bar power source 23 and the control assembly 28, so that the bus bar power source 23 and the external power source can supply power to the control assembly 28 through the second redundant assembly 26, when any one of the bus bar power source 23 and the external power source fails, the other one of the two can still supply power to the control assembly 28, so as to reduce the occurrence of failure of the control assembly 28 due to power failure, and improve the stability of the bus bar 100.

In some embodiments, the control assembly 28 is communicatively coupled to the solid state circuit breaker 21.

The solid-state circuit breaker 21 generally includes a control unit for controlling the opening and closing of the circuit and having an arc extinguishing function, and an execution unit for controlling the action of the execution unit.

The control component 28 is in communication connection with the solid state breaker 21, which means that the control component 28 can exchange information with the control unit of the solid state breaker 21, and meanwhile, the control component 28 can control the action of the execution unit of the solid state breaker 21, so that the control component 28 can obtain the working state of the solid state breaker 21, and can play a redundant role in controlling the solid state breaker 21, namely, when the control unit of the solid state breaker 21 fails, the control component 28 can also control the action of the execution unit of the solid state breaker 21 to control the opening or the closing of the solid state breaker 21, thereby improving the stability of the bus cabinet 100, and it can be understood that the solid state breaker 21 can also work normally when the control component 28 fails.

The communication connection between the control assembly 28 and the solid state circuit breaker 21 may be implemented by a wired or wireless communication connection, for example, the control assembly 28 may be communicatively connected to the solid state circuit breaker 21 by a communication cable, and for example, the control assembly 28 may also be communicatively connected to the solid state circuit breaker 21 by bluetooth.

Further, an alarm unit can be preset in the control component 28, at this time, the control component 28 is in communication connection with the solid state breaker 21, and can monitor the working state of the solid state breaker 21 through the control component 28, when the control unit or the execution unit of the solid state breaker 21 fails, the control component 28 can alarm through the alarm unit, so that a worker can find the failure in time.

In this embodiment, the control component 28 is communicatively connected to the solid state circuit breaker 21, so that the control component 28 can also control the state of the solid state circuit breaker 21, so that the control component 28 and the control unit of the solid state circuit breaker 21 can both control the circuit breakers in the solid state circuit breaker 21, when any one of the control component 28 and the control unit of the solid state circuit breaker 21 fails, the other one of the control component 28 and the control unit of the solid state circuit breaker 21 can still control the state of the circuit breakers in the solid state circuit breaker 21, so as to reduce the occurrence of failure of the solid state circuit breaker 21 due to failure of the control system, and improve the stability of the bus cabinet 100.

Referring to fig. 3, in some embodiments, the bus 100 further includes a switching power supply 27, and the switching power supply 27 is disposed between the control component 28 and the second redundant component 26, or the switching power supply 27 is disposed between the bus power supply 23 and the second redundant component 26, and between the redundant power supply 24 and the second redundant component 26.

The switching power supply 27 is a structure for performing electric energy conversion in the bus cabinet 100, and the switching power supply 27 is used for converting an input voltage received by the switching power supply into different voltages through different forms of architectures and outputting the different voltages. In some embodiments, the switch power supply 27 is disposed in the cabinet 10, for example, the switch power supply 27 may be directly disposed on an inner sidewall of the cabinet 10, and the switch power supply 27 may also be indirectly connected to the cabinet 10 through a structural member.

Since the control assembly 28 is powered by the redundant power supply 24 or the bus power supply 23, the switching power supply 27 is provided between the bus power supply 23 and the control assembly 28 in order to enable the voltage supplied by the bus power supply 23 or the redundant power supply 24 to be adapted to the voltage requirements of the control assembly 28. Accordingly, the switching power supply 27 may be disposed between the second redundancy assembly 26 and the control assembly 28 such that the switching power supply 27 can receive the voltage outputted from the second redundancy assembly 26 and convert the voltage into the voltage required by the control assembly 28 to be outputted to the control assembly 28, and the switching power supply 27 may be disposed between the bus power supply 23 and the second redundancy assembly 26, the redundancy power supply 24 and the second redundancy assembly 26 such that the switching power supply 27 can receive the voltage outputted from the bus power supply 23 and the redundancy power supply 24 and convert the voltage into the voltage required by the control assembly 28 to be outputted to the second redundancy assembly 26 and to be outputted to the control assembly 28 via the second redundancy assembly 26.

In the present embodiment, the switch power supply 27 is disposed in the bus bar 100, so that the voltage of the bus bar power supply 23 is converted into the voltage required by the control component 28 by the switch power supply 27, thereby meeting the voltage requirement of the control component 28.

In some embodiments, the bus 100 further includes a fuse 22, the fuse 22 being electrically connected to the energy storage structure connection end of the solid state circuit breaker 21.

The fuse 22 is a structure in the bus cabinet 100 for overload protection, and when the current exceeds a preset value of the fuse 22, the fuse 22 itself can generate heat and open to disconnect a corresponding circuit, and the fuse 22 may be a plug-in fuse, a spiral fuse, or other types of fuses.

The fuse 22 is electrically connected to the energy storage structure connection end of the solid state circuit breaker 21, i.e. the fuse 22 is disposed between the solid state circuit breaker 21 and the power module 40, the fuse 22 is mainly used for protecting the solid state circuit breaker 21, and the fuse 22 can also protect other electrical components in the bus cabinet 100.

In the present embodiment, the fuse 22 is provided and the fuse 22 is connected between the solid-state circuit breaker 21 and the power module 40 to function as protection for the solid-state circuit breaker 21 and other devices in the bus bar 100, and when the current in the circuit exceeds a preset value, the fuse 22 can be fused to protect the solid-state circuit breaker 21 and other devices in the bus bar 100.

Referring to fig. 1 to fig. 4, fig. 1 is a schematic perspective view of a bus bar 100 according to some embodiments of the present application, fig. 2 is a schematic electrical connection diagram of the bus bar 100, a power module 30 and a power module 40 connected to each other according to some embodiments of the present application, fig. 3 is a schematic electrical connection diagram of an internal structure of the bus bar 100 according to some embodiments of the present application, and fig. 4 is a schematic front view of the bus bar 100 according to some embodiments of the present application with a cabinet door 13 removed.

In some embodiments of the present application, the bus bar 100 further includes a cabinet body 10, in which a first accommodating chamber 101 and a second accommodating chamber 102 are provided in the cabinet body 10, the solid state circuit breaker 21 is accommodated in the first accommodating chamber 101, and the bus bar power supply 23, the redundant power supply 24, and the control assembly 28 are accommodated in the second accommodating chamber 102.

The first accommodating chamber 101 refers to an accommodating space formed in the cabinet body 10, the first accommodating chamber 101 can be formed by surrounding a plate body or other structural members, or can be only a certain space area set in the cabinet body 10, and the shape of the first accommodating chamber 101 can be a regular shape, such as a cube, a cylinder or other shapes, or can be an irregular shape, such as an L shape, a U shape or other shapes.

Similar to the first accommodating chamber 101, the second accommodating chamber 102 refers to an accommodating space formed in the cabinet body 10, the second accommodating chamber 102 may be enclosed by a plate body or other structural members, or may refer to only a certain space area set in the cabinet body 10, and the shape of the second accommodating chamber 102 may be a regular shape, for example, a cube, a cylinder or other shape, or may be an irregular shape, for example, an L-shape, a U-shape or other shape.

The solid state circuit breaker 21 is accommodated in the first accommodating chamber 101, the bus bar power supply 23, the redundant power supply 24 and the control component 28 are accommodated in the second accommodating chamber 102, and because the solid state circuit breaker 21 can emit a large amount of heat in the working process and cause stable rising in the environment where the solid state circuit breaker is located, and the bus bar power supply 23, the redundant power supply 24 and the control component 28 are easy to fail and poor in stability when working in the environment with higher temperature, the solid state circuit breaker 21 is arranged in the first accommodating chamber 101, and the bus bar power supply 23, the redundant power supply 24 and the control component 28 are arranged in the second accommodating chamber 102, and the solid state circuit breaker 21, the bus bar power supply 23, the redundant power supply 24 and the control component 28 are separated through the space, so that the negative influence of the heating of the solid state circuit breaker 21 on the bus bar power supply 23, the redundant power supply 24, the bus bar power supply 23, the redundant power supply 24 and the control component 28 is reduced.

Because the solid state circuit breaker 21 generates more heat during operation, the operating environment of the bus bar power supply 23, the redundant power supply 24, and the control assembly 28 should not be too high. Accordingly, the present embodiment provides the first accommodating chamber 101 and the second accommodating chamber 102 in the cabinet body 10 of the bus bar 100, and accommodates the solid state circuit breaker 21 through the first accommodating chamber 101, and accommodates the bus bar power supply 23, the redundant power supply 24, and the control component 28 through the second accommodating chamber 102, so that the solid state circuit breaker 21 is spatially separated from the bus bar power supply 23, the redundant power supply 24, and the control component 28 through the first accommodating chamber 101 and the second accommodating chamber 102, so that the solid state circuit breaker 21 is in a different working space from the bus bar power supply 23, the redundant power supply 24, and the control component 28, thereby being capable of alleviating the negative effects that the solid state circuit breaker 21 may have on the bus bar power supply 23, the redundant power supply 24, and the control component 28.

In some embodiments, the first accommodating chamber 101 and the second accommodating chamber 102 are both enclosed by structural members, and at this time, besides the space separation, the structural members can also play a role of separating the solid state circuit breaker 21 from the bus power supply 23, the redundant power supply 24 and the control component 28, so that the negative effects of the high temperature generated by the operation of the solid state circuit breaker 21 on the bus power supply 23, the redundant power supply 24 and the control component 28 are better reduced.

Further, the structural member may be made of a material with a relatively high heat-insulating capability, such as fiberglass, asbestos, a vacuum board, etc., so as to further reduce the negative effects of the high temperature generated by the operation of the solid-state circuit breaker 21 on the bus power supply 23, the redundant power supply 24, and the control assembly 28.

Referring to fig. 4, in some embodiments, the first receiving chamber 101 is disposed above the second receiving chamber 102 in the direction of gravity.

Because the solid-state circuit breaker 21 is accommodated in the first accommodating chamber 101, and the solid-state circuit breaker 21 is a high-heat-generation device, and because the hot air moves in a direction deviating from the gravity compared with the cold air, the first accommodating chamber 101 is arranged above the second accommodating chamber 102 along the gravity direction, so that the hot air generated by the solid-state circuit breaker 21 in the first accommodating chamber 101 moves upwards, the influence of the hot air on the electric elements in the second accommodating chamber 102 is reduced, and the stable effect of reducing the environments of the bus power supply 23, the redundant power supply 24 and the control assembly 28 is achieved, so that the negative influence of the solid-state circuit breaker 21 on the bus power supply 23, the redundant power supply 24 and the control assembly 28 is further reduced.

In this embodiment, the first accommodating chamber 101 is disposed above the second accommodating chamber 102, and since the first accommodating chamber 101 is used for accommodating the solid-state circuit breaker 21 and hot air generally rises, the first accommodating chamber 101 is disposed above the second accommodating chamber 102, so as to reduce hot air entering the second accommodating chamber 102, thereby further alleviating the adverse effects of the solid-state circuit breaker 21 on the bus power supply 23, the redundant power supply 24 and the control assembly 28, and improving the reliability and stability of the bus-bar cabinet 100.

Referring to fig. 4, in some embodiments, a third accommodating chamber 103 is further provided in the bus cabinet 100, and the fuse 22 is accommodated in the third accommodating chamber 103, and the third accommodating chamber 103 and the first accommodating chamber 101 are respectively provided at opposite sides of the second accommodating chamber 102.

The third accommodating chamber 103 refers to an accommodating space formed in the cabinet body 10, the third accommodating chamber 103 is used for accommodating cables entering the bus bar 100, the third accommodating chamber 103 is also used for accommodating a part, located in the bus bar 100, of the cables extending from the bus bar 100 to the outside, of the accommodating chambers, the third accommodating chamber 103 can be enclosed by a plate body or other structural parts, can also only refer to a certain space area set in the cabinet body 10, and the shape of the third accommodating chamber 103 can be a regular shape, such as a cube, a cylinder or other shape, or an irregular shape, such as an L shape, a U shape or other shape.

The third accommodating chamber 103 and the first accommodating chamber 101 are arranged on two opposite sides of the second accommodating chamber 102, and the fuse 22 is accommodated in the third accommodating chamber 103, so that the negative influence of the temperature generated by the operation of the solid-state circuit breaker 21 on the fuse 22 can be reduced, the fuse 22 can better play a role in protecting a circuit, and the service life is not influenced by the rise of the ambient temperature, so that the fuse is not invalid.

Because the first accommodating chamber 101 is located above the second accommodating chamber 102 along the gravity direction, and the third accommodating chamber 103 and the first accommodating chamber 101 are arranged at two opposite sides of the second accommodating chamber 102, the third accommodating chamber 103 is located below the second accommodating chamber 102 along the gravity direction, and because the cables are generally laid near the ground by the cable in the energy storage system 200 through the structures of a ground cable trench, a ground cable groove and the like, the third accommodating chamber 103 is arranged below the second accommodating chamber 102, so that the cables can be more accommodated in the third accommodating chamber 103, and the cables exposed outside are reduced, thereby the cabinet 10 can protect more cables.

The third accommodating chamber 103 for accommodating the fuse 22 is provided in the bus cabinet 100, and the third accommodating chamber 103 and the first accommodating chamber 101 are respectively provided at two opposite sides of the second accommodating chamber 102, so that the third accommodating chamber 103 and the first accommodating chamber 101 are separated by the second accommodating chamber 102, thereby alleviating the adverse effect that the first accommodating chamber 101 may have on the fuse 22, and simultaneously enabling the third accommodating chamber 103 to accommodate more cables, so that the third accommodating chamber 103 can play a role of protecting the cables.

In some embodiments, the cable enters the third accommodating chamber 103 from one side of the cabinet body 10 towards the ground, and after entering the third accommodating chamber 103, the cable in the cabinet body 10 extends to the outside through one side of the cabinet body 10 towards the ground, and at this time, the cabinet body 10 can also play a role in shielding the cable below the cabinet body 10, so that the cable can be better protected, and meanwhile, the situation that external sundries (dust, fallen leaves, rainwater and the like) enter the interior of the cabinet body 10 along the cable can be reduced.

In some embodiments, the cable entering the third accommodating chamber 103 from the outside and the cable extending from the third accommodating chamber 103 to the outside are respectively disposed on different sides of the third accommodating chamber 103, so as to facilitate the staff to distinguish and confirm.

Referring to fig. 1, in some embodiments, a heat dissipation structure 11 is provided on the cabinet 10, where the heat dissipation structure 11 is at least opposite to the first accommodating chamber 101.

The heat dissipation structure 11 may be a heat dissipation hole formed in the cabinet body 10 to naturally dissipate heat by air circulation, and the heat dissipation structure 11 may also be an air cooling component, a water cooling component or other heat dissipation devices or structures.

The heat dissipation structure 11 may be disposed on only one side of the first accommodating chamber 101 and opposite to the first accommodating chamber 101, so that air in the first accommodating chamber 101 can be in communication with the outside air to reduce the temperature in the first accommodating chamber 101, and the heat dissipation structure 11 may be disposed on both the first accommodating chamber 101 and the second accommodating chamber 102, so that air in both the first accommodating chamber 101 and the second accommodating chamber 102 can be in communication with the outside air to reduce the temperature in the first accommodating chamber 101 and the second accommodating chamber 102.

In this embodiment, the heat dissipation structure 11 is at least opposite to the first accommodating chamber 101 due to the higher heat productivity of the solid state circuit breaker 21 in the first accommodating chamber 101, so as to better perform the heat dissipation function and alleviate the situation of the excessive temperature in the bus cabinet 100.

In some embodiments, the heat dissipation structure 11 includes a heat dissipation hole formed in the cabinet 10.

The heat dissipation structure 11 includes a heat dissipation hole formed in the cabinet body 10, and the heat dissipation hole can enable the first accommodating chamber 101 opposite to the heat dissipation hole to be communicated with the outside, and natural cooling is achieved through air circulation.

The heat dissipation holes can be one or a plurality of, can be round, square or other, can be formed on the top surface, the side surface, the bottom surface or any other surface or multiple surfaces of the cabinet body 10, can be uniformly distributed at intervals and form a whole heat dissipation area, and can be arranged on any surface or multiple surfaces of the cabinet body 10 in a scattered mode.

At present, the air cooling of the cabinet body 10 is performed by adopting a fan to perform air cooling heat dissipation, and setting the fan in the convergence cabinet 100 can lead to a large number of suspended metal devices in the cabinet body 10, which easily leads to unstable potential or suspension potential generation, so that partial discharge phenomenon easily occurs.

Referring to fig. 1, in some embodiments, a cabinet 10 is provided with a viewing window 12.

The observation window 12 may be a transparent member embedded in the cabinet body 10, so that a worker can observe the interior of the cabinet body 10 through the observation window 12, the observation window 12 may be made of glass, acrylic or other transparent materials, and the observation window 12 may be square, round or other shapes.

Referring to fig. 1, in some embodiments, a cabinet door 13 is rotatably connected to a cabinet body 10, and a shielding structure 14 connected to the cabinet body 10 is disposed above the cabinet door 13 along the direction of gravity, where the shielding structure 14 protrudes from the cabinet body 10 along the direction in which the cabinet door 13 is located.

The cabinet door 13 is a structure capable of being covered on the cabinet body 10, the cabinet door 13 can rotate relative to the cabinet body 10, namely, the cabinet door 13 can be covered on the cabinet body 10 and can be opened so as to facilitate the operation of staff, and the cabinet door 13 can be rotatably connected with the cabinet body 10 through a hinge, a rotating shaft, a hinge or other rotating connection structures.

The area of the cabinet door 13 can be larger than or equal to the area of the opening on the cabinet body 10, so that the opening can be completely closed when the cabinet door 13 is covered on the cabinet body 10, and the area of the cabinet door 13 can also be smaller than the area of the opening on the cabinet body 10, so that part of the structure can be exposed to the outside when the cabinet door 13 is covered on the cabinet body 10, thereby facilitating the observation of staff or the extension of cables to the outside.

The shape of the cabinet door 13 can be square, round or other, the shape of the cabinet door 13 can be set according to the shape of the opening on the cabinet body 10, the material of the cabinet door 13 can be the same as that of the cabinet body 10 or the isolating piece, or other materials, and the material of the cabinet door 13 can be metal, plastic, wood or other materials.

The cabinet door 13 can protect the devices in the first accommodating chamber 101, the second accommodating chamber 102 and the third accommodating chamber 103 in the cabinet body 10, so as to reduce the influence of the external environment on each component in the cabinet body 10.

The shielding structure 14 is a structure protruding out of the cabinet body 10, the shielding structure 14 can be a plate-shaped structure or a block-shaped structure, the shielding structure 14 can be connected with the cabinet body 10 by welding, gluing, screwing or other modes, the shielding structure 14 can be integrally formed with the cabinet body 10, the shielding structure 14 can be made of the same material as the cabinet body 10 or different from the cabinet body 10, for example, the shielding structure 14 can be made of metal, plastic, wood or other materials.

The shielding structure 14 is arranged above the cabinet door 13 along the gravity direction, the shielding structure 14 extends from the cabinet body 10 above the cabinet door 13 and protrudes out of the cabinet body 10, so that an eave-like structure can be formed above the cabinet door 13, the occurrence of sundries entering the cabinet body 10 along a gap between the cabinet door 13 and the cabinet body 10 is reduced, the occurrence of sundries entering the cabinet door 13 when the cabinet door 13 is opened is also reduced, the shielding structure 14 is mainly used for reducing rainwater or other liquid entering the cabinet body 10, and the shielding structure 14 can also be used for reducing leaves or other sundries entering the cabinet body 10.

In this embodiment, the cabinet door 13 is provided to protect the devices in the first accommodating chamber 101, the second accommodating chamber 102 and the third accommodating chamber 103 in the cabinet body 10 through the cabinet door 13 to reduce the influence of the external environment on each device in the cabinet body 10, and the shielding structure 14 is provided above the cabinet door 13 to reduce the occurrence of the situation that rainwater or other sundries enter the cabinet body 10 along the gap of the cabinet door 13, so that the influence of the external environment on each device in the cabinet body 10 can be further reduced.

Referring to fig. 1 to 4, some embodiments of the first aspect of the present application provide a bus cabinet 100 in which a solid state circuit breaker 21 is disposed in a cabinet body 10, and the solid state circuit breaker 21 is disposed between a power module 40 and a power module 30, so that a breaking speed of the solid state circuit breaker 21 can meet a requirement.

The solid-state breaker 21 is provided with a redundant power supply 24 and a bus power supply 23, the solid-state breaker 21 is powered through the redundant power supply 24 and the bus power supply 23, so that any fault of the bus power supply 23 and the redundant power supply 24 does not cause the solid-state breaker 21 to fail, the reliability and stability of the solid-state breaker 21 are improved, the control component 28 is powered through the redundant power supply 24 and the bus power supply 23, so that any fault of the bus power supply 23 and the redundant power supply 24 does not cause the control component 28 to fail, the reliability and stability of the control component 28 are improved, and the working state of the solid-state breaker 21 is controlled through the control component 28 and a control unit of the solid-state breaker 21, so that any fault of the control component 28 and the control unit of the solid-state breaker 21 does not cause the solid-state breaker 21 to fail, and the reliability and stability of the solid-state breaker 21 are improved.

The first accommodating chamber 101, the second accommodating chamber 102 and the third accommodating chamber 103 are sequentially arranged in the cabinet body 10 from top to bottom along the gravity direction, the solid-state circuit breaker 21 is arranged in the first accommodating chamber 101 to reduce the negative influence of high temperature generated by the solid-state circuit breaker 21 on the bus power supply 23, the redundant power supply 24 and the control component 28, and the fuse 22 and the cable are arranged in the third accommodating chamber 103 to reduce the negative influence of the solid-state circuit breaker 21 on the fuse 22 and the cable, so that more cables can be accommodated in the cabinet body 10 to better protect the cable.

In a second aspect, some embodiments of the present application further provide an energy storage system 200, including the bus-bar 100 provided by some embodiments of the first aspect, and a power module 40 and a power module 30, wherein the power module 30 includes a compensation device 31 electrically connected to the solid state circuit breaker 21.

The power module 40 is a structure for supplying current to the energy storage system 200, and the power module 40 may be a battery or other structures capable of supplying power.

The power module 30 refers to a structure for converting electric energy in the energy storage system 200, and the power module 30 may include various semiconductor devices, such as a diode, an insulated gate bipolar Transistor (Insulated Gate Bipolar Transistor, IGBT), a metal oxide semiconductor field effect Transistor (Metal Oxide Semiconductor FIELD EFFECT Transistor, MOSFET), etc., and generally the power module 30 may be used for high-voltage and high-current power control and conversion tasks, such as a motor drive, an inverter, a power supply system, an electric vehicle drive, an industrial frequency converter, etc.

The power module 30 includes a compensation device 31, where the compensation device 31 is a device capable of storing and compensating electric energy, and the compensation device 31 can play a role in compensating and stabilizing voltage when the voltage in the power module 30 changes, and the compensation device 31 may be a capacitor or other devices with compensation capability.

In the energy storage system 200, due to the existence of the compensation device 31, when the mechanical circuit breaker breaks, the voltage carried by the mechanical circuit breaker will rapidly rise and exceed the breaking capacity of the mechanical circuit breaker, and the process will usually be completed within a few microseconds, and the response speed of the mechanical circuit breaker is slower than the speed of the voltage rise. Accordingly, the solid state circuit breaker 21 in the bus bar 100 is disposed between the power module 40 and the compensation device 31 to control the on or off of the circuit by the solid state circuit breaker 21. Because the solid-state breaker 21 has the advantages of fast switching speed (microsecond level), difficult generation of electric arc and the like, the response speed of the solid-state breaker 21 can adapt to the rising speed of the voltage after the solid-state breaker 21 is broken in the energy storage system 200, so that the situation that the voltage at the broken position of the solid-state breaker 21 exceeds the load capacity of the solid-state breaker 21 is difficult to occur, the electric arc is difficult to generate, and the requirement of the energy storage system 200 on the breaker can be met.

It should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit the technical solution of the present application, and although the detailed description of the present application is given with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application, and all the modifications or substitutions are included in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. The utility model provides a conflux cabinet, is applied to energy storage system, its characterized in that includes:

2. The bustle according to claim 1, further comprising a bus power supply electrically connected between a main bus of said bustle and said solid state circuit breaker, and a redundant power supply electrically connected between an external power supply and said solid state circuit breaker.

3. The manifold of claim 2, wherein the manifold further comprises a first redundant assembly;

The first redundant assembly is electrically connected between the bus power supply and the solid state circuit breaker, and between the redundant power supply and the solid state circuit breaker, so that the bus power supply and the redundant power supply can both supply power to the solid state circuit breaker through the first redundant assembly.

4. The manifold of claim 3, further comprising a control component and a second redundancy component;

5. The bustle of claim 4, wherein the control assembly is communicatively coupled to the solid state circuit breaker.

6. The bustle of claim 4, further comprising a switching power supply;

The switching power supply is arranged between the control component and the second redundant component, or the switching power supply is arranged between the bus power supply and the second redundant component, and the switching power supply is arranged between the redundant power supply and the second redundant component.

7. The bus bar of any one of claims 4-6, further comprising a cabinet body, wherein a first receiving chamber and a second receiving chamber are provided in the cabinet body, wherein the solid state circuit breaker is received in the first receiving chamber, and wherein the bus bar power supply, the redundant power supply, and the control assembly are each received in the second receiving chamber.

8. The cabinet according to claim 7, wherein the first accommodation chamber is provided above the second accommodation chamber in a gravitational direction.

9. The bus bar of claim 7 further comprising a fuse disposed within the body, the fuse electrically connected to the energy storage structure connection end of the solid state circuit breaker.

10. The bus cabinet of claim 9, further comprising a third receiving chamber within the bus cabinet, the fuse being received within the third receiving chamber;

11. The bus cabinet of claim 7, wherein the cabinet body is provided with a heat dissipation structure, and the heat dissipation structure is at least opposite to the first accommodating chamber.

12. The wall station of claim 11, wherein the heat dissipating structure comprises a heat dissipating aperture open to the station body.

13. The convergence cabinet as recited in claim 7, wherein the cabinet body is provided with an observation window.

14. The convergence cabinet of claim 7 wherein the cabinet body is rotatably connected to a cabinet door;

Along the direction of gravity, the cabinet door top be equipped with connect in the shielding structure of the cabinet body, shielding structure along by the cabinet body directional the direction protrusion of cabinet door in the cabinet body.

15. An energy storage system comprising a bus bar as in any one of claims 1-14, and

A power module electrically connected to the solid state circuit breaker;

a power module includes a compensation device electrically connected to the solid state circuit breaker.