CN221200970U - Switch system and energy storage system - Google Patents

Abstract

The application relates to a switching system and an energy storage system, which realize switching-on and switching-off operations through the switching-on and switching-off of a contact switch of a switching device, wherein the contact switch is driven by a switching-off executing mechanism in the switching device. The switch system is also provided with two or more control devices, and the operation control of the opening actuating mechanism is carried out through the two or more control devices. Therefore, under the condition of the opening requirement, the opening actuating mechanism of the switching device can drive the contact switch to act only by receiving the opening signal sent by any one control device, so as to execute the opening function. According to the scheme, the switching-off of the switching device is realized through two or more redundant control devices, even if part of the control devices fail, the switching-off control of the switching device can be realized, the phenomenon of switching-off failure can be effectively relieved, and the switching-off success rate is improved.

Description

Switch system and energy storage system

Technical Field

The present application relates to the field of energy storage technologies, and in particular, to a switching system and an energy storage system.

Background

Along with the development of scientific technology, the energy storage system is used as an important power system regulation resource, and great electricity utilization convenience is brought to daily production and daily life of people. Among various energy storage systems, the high-voltage direct-hanging energy storage system has the advantages of high modularization degree, low network loss, good economic benefit, high operation reliability and the like, and is gradually developed and applied. In the high-voltage direct-hanging energy storage system, reliable cutting-out of the energy storage valve has important significance for safe operation of the energy storage system.

In the related art, the switching-out operation of the energy storage valve is generally realized through disconnecting the gate by the isolating switch, however, the disconnecting switch is easy to fail in disconnecting the gate, and the switching-out operation of the energy storage valve is seriously influenced.

Disclosure of utility model

Based on this, it is necessary to provide a switching system and an energy storage system to alleviate the failure of switching off and improve the switching off success rate.

A switching system comprising a switching device and two or more control devices, wherein the switching device comprises a brake separating actuating mechanism and a contact switch, and the brake separating actuating mechanism is connected with the contact switch; the control device is respectively connected with the brake separating executing mechanism.

According to the switch system, switching-on and switching-off operations are realized through the switching-on and switching-off of the contact switch of the switch device, and the contact switch is driven through the switching-off actuating mechanism in the switch device. The switch system is also provided with two or more control devices, and the operation control of the opening actuating mechanism is carried out through the two or more control devices. Therefore, under the condition of the opening requirement, the opening actuating mechanism of the switching device can drive the contact switch to act only by receiving the opening signal sent by any one control device, so as to execute the opening function. According to the scheme, the switching-off of the switching device is realized through two or more redundant control devices, even if part of the control devices fail, the switching-off control of the switching device can be realized, the phenomenon of switching-off failure can be effectively relieved, and the switching-off success rate is improved.

In some embodiments, the number of the control devices includes two, namely a first control device and a second control device, and the first control device and the second control device are respectively connected with the opening actuating mechanism.

According to the scheme, the number of the control devices is two, namely the first control device and the second control device, so that the system cost can be effectively reduced while the redundancy control of the switch device is realized.

In some embodiments, the brake release actuator comprises a first brake release actuator and a second brake release actuator, the first brake release actuator and the second brake release actuator are connected to the same contact switch, the first control device is connected to the first brake release actuator, and the second control device is connected to the second brake release actuator.

According to the scheme, the brake separating actuating mechanism of the switching device is arranged in a redundant mode, even if one brake separating actuating mechanism fails, the brake separating function can be realized through the other brake separating actuating mechanism, and the brake separating reliability of the hanging device is effectively improved.

In some embodiments, the first control device includes a first control component, a first driving component and a first driving switch, the first driving component is connected with the first control component, and two ends of the first driving switch are respectively connected with the first brake separating executing mechanism.

And/or, in some embodiments, the second control device comprises a second control assembly, a second driving assembly and a second driving switch, the second driving assembly is connected with the second control assembly, and two ends of the second driving switch are respectively connected with the second brake separating executing mechanism.

According to the scheme, under the condition that the first control device and the second control device respectively drive the first brake separating actuating mechanism and the second brake separating actuating mechanism, the first control device and/or the second control device can be/are provided with the control assembly, the driving assembly and the driving switch, so that the brake separating actuating mechanism can be controlled, and the brake separating mechanism has the advantages of being simple in structure and saving cost.

In some embodiments, the first control device includes a first control component, a first driving switch and a second driving switch, the first driving component is connected with the first driving switch and the second driving switch respectively, the first driving component is connected with the first control component, the first driving switch and the second driving switch are connected in parallel, and two ends formed in parallel are connected with the first brake separating executing mechanism respectively.

And/or, in some embodiments, the second control device comprises a second control component, a second driving component, a third driving switch and a fourth driving switch, the second driving component is respectively connected with the third driving switch and the fourth driving switch, the second driving component is connected with the second control component, the third driving switch and the fourth driving switch are connected in parallel, and two ends formed by the parallel connection are respectively connected with the second brake separating actuating mechanism.

According to the scheme, under the condition that the first control device and the second control device respectively drive the first brake separating actuating mechanism and the second brake separating actuating mechanism, the first control device and/or the second control device can comprise one control component, one driving component and two driving switches, namely, the first control device and/or the second control device realize the control of the brake separating actuating mechanism under the condition that the driving switches are redundant, and the brake separating reliability of a switch system is further improved.

In some embodiments, the brake release actuator comprises a first brake release actuator and a second brake release actuator, the first brake release actuator and the second brake release actuator are connected to the same contact switch, the first control device is connected to the first brake release actuator and the second brake release actuator, and the second control device is connected to the first brake release actuator and the second brake release actuator.

According to the scheme, the control device and the switching-off executing mechanism of the switching device are arranged in a redundant mode, and meanwhile, the first switching-off executing mechanism and the second switching-off executing mechanism can be controlled to operate through the first control device and the second control device. Therefore, any one control device fails, the operation of the first brake separating executing mechanism and the second brake separating executing mechanism can not be influenced, and the brake separating reliability of the switch system can be further improved.

In some embodiments, the first control device comprises a first control assembly, a first drive switch, and a second drive switch, and the second control device comprises a second control assembly, a second drive assembly, a third drive switch, and a fourth drive switch; the first driving assembly is connected with the first driving switch and the second driving switch respectively, the second driving assembly is connected with the third driving switch and the fourth driving switch respectively, the first driving assembly is connected with the first control assembly, the first driving switch and the third driving switch are connected in parallel, and two ends formed in parallel are connected with the first brake separating executing mechanism respectively; the second control assembly is connected with the second driving assembly, the second driving switch and the fourth driving switch are connected in parallel, and two ends formed by the parallel connection are respectively connected with the second brake separating executing mechanism.

According to the scheme, under the condition that the first control device and the second control device can drive the first brake separating actuating mechanism and the second brake separating actuating mechanism simultaneously, the first control device and/or the second control device can comprise one control component, one driving component and two driving switches, namely, the first control device and/or the second control device can control the brake separating actuating mechanism under the condition that the driving switches are redundant, and the brake separating reliability of a switch system is further improved.

In some embodiments, the brake release actuator comprises a first brake release actuator, and the first control device and the second control device are respectively connected with the first brake release actuator.

According to the scheme, the number of the brake separating executing mechanisms is one, the brake separating executing mechanisms are in redundancy control through the first control device and the second control device, and the system cost is effectively reduced under the condition of realizing brake separating redundancy control.

In some embodiments, the first control device includes a first control component, a first driving component and a first driving switch, the first driving component is connected with the first driving switch, the first control component is connected with the first driving component, and two ends of the first driving switch are respectively connected with the first brake separating executing mechanism.

And/or in some embodiments, the second control device comprises a second control component, a second driving component and a second driving switch, the second driving component is connected with the second driving switch, the second control component is connected with the second driving component, and two ends of the second driving switch are respectively connected with the first brake separating executing mechanism.

According to the scheme, under the condition that the opening actuating mechanism is not provided with redundancy, the first control device and/or the second control device can be/are provided with the control assembly, the driving assembly and the driving switch, so that the control of the first opening actuating mechanism is realized, and the device has the advantages of being simple in structure and saving cost.

The energy storage system comprises a direct current bus, an energy storage valve and the switch system, wherein two ends of the contact switch are respectively connected with the direct current bus and the energy storage valve.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic diagram of an energy storage system according to some embodiments of the present application;

FIG. 2 is a schematic diagram of a switch system according to some embodiments of the application;

FIG. 3 is a schematic diagram of a switch system according to other embodiments of the present application;

FIG. 4 is a schematic diagram of a switch system according to still other embodiments of the present application;

FIG. 5 is a schematic diagram of a switch system according to still other embodiments of the present application;

FIG. 6 is a schematic diagram of a switch system according to other embodiments of the present application;

FIG. 7 is a schematic diagram of a switch system according to still other embodiments of the present application;

FIG. 8 is a schematic diagram of a switch system according to still other embodiments of the present application;

fig. 9 is a schematic diagram of a switch system according to another embodiment of the present application.

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 terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

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 embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, 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, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the 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.

At present, the energy storage system is widely applied from the development of market situation, and brings great electricity utilization convenience for daily production and life. The high-voltage direct-hanging energy storage system has a high-modularized structure, so that the requirements of high efficiency, high reliability, economy and safety can be met, and the high-voltage direct-hanging energy storage system is gradually developed and applied.

In an actual energy storage scene, the high-voltage direct-hanging energy storage system often has the condition that the energy storage valve is cut out because of the faults of the energy storage valve or other components of the high-voltage direct-hanging energy storage system. At this time, the energy storage valve is connected with the direct current bus through the isolating switch (isolating knife switch), and is generally cut out from the high-voltage direct-hanging energy storage system in a mode of controlling the isolating switch to open.

However, researches show that the disconnecting speed of the isolating switch is low, the speed of the energy storage valve cutting out the high-voltage direct-hanging energy storage system is low, and the high-voltage direct-hanging energy storage system has the risk of fault operation. In addition, the disconnecting switch is generally a single disconnecting actuator and a single disconnecting control system, the disconnecting control redundancy is low, and when the disconnecting control system fails or the disconnecting actuator fails, the disconnecting switch fails to disconnect the disconnecting switch, and the energy storage valve cannot be reliably disconnected to operate, namely, the problem that the disconnecting reliability of the energy storage valve is poor exists.

In order to solve the problem of poor switching reliability of the energy storage valve, researches show that a switching device with redundant control can be connected between the energy storage valve and the direct current bus, namely, two or more control devices are arranged for the switching device, and in the actual operation process, only a switching-off signal of any one control device is sent to the switching device, so that the switching-on and switching-off functions can be realized rapidly.

Based on the above consideration, the embodiment of the application provides a switch system, in an energy storage scene, a switch device can be arranged between a direct current bus and an energy storage valve, the energy storage valve is connected into the direct current bus through a contact switch of the switch device, and the contact switch is driven by a brake separating executing mechanism in the switch device. The switch system is also provided with two or more control devices, and the operation control of the opening actuating mechanism is carried out through the two or more control devices.

Based on the switch system, the opening of the switch device is realized through two or more control devices which are arranged in a redundant way, and even if part of the control devices fail, the opening control of the switch device can be realized, so that the failure of opening is effectively relieved, and the success rate of opening is improved.

The switch system of the embodiment of the application is applied to an energy storage system, in particular to a high-voltage direct-current direct-hanging type energy storage system shown in fig. 1. The high-voltage direct-current direct-hanging energy storage system comprises an energy storage valve 11, an isolating switch 14, a direct-current bus 12 and the switch system of the embodiment of the application, wherein the energy storage valve 11 comprises a plurality of cascaded energy storage valve sub-modules, and detailed description is omitted.

The two ends of the energy storage valve 11 formed after the cascade connection of the plurality of energy storage valve submodules are respectively connected with the positive end and the negative end of the direct current bus 12, a disconnecting switch 14 and a switching device 13 which are connected in series are arranged on a circuit between the energy storage valve 11 and the positive end direct current bus, and a disconnecting switch 14 and a switching device 13 which are connected in series are also arranged on a circuit between the energy storage valve 11 and the negative end direct current bus. Further, in order to improve the operation safety of the high-voltage direct-current direct-hanging energy storage system, a grounding disconnecting link K may be further disposed on a line between the energy storage valve 11 and the direct-current bus 12. Specifically, both ends of the isolating switch 14 are grounded through the grounding switch K, and the switch device 13 is near one side of the energy storage valve 11 and can be grounded through the grounding switch K.

Referring to fig. 2 in combination, a switching system includes a switching device 13 and two or more control devices 21, where the switching device 13 includes a switching-off actuator 131 and a contact switch (not shown), and the switching-off actuator 131 is connected to the contact switch; the control device 21 is connected to the opening actuators 131.

Specifically, the switching device 13 is a switch having a rapid action and realizing a switching-off and switching-on function. The opening actuator 131 is a component for driving the contact switch to operate in the switching device 13, thereby realizing the opening function. The contact switch is a switching member connected to an object to be controlled by a contact. The control device 21 is a device capable of issuing a switching-off/switching-on signal to the switching device 13 according to actual conditions. It will be appreciated that the particular type of switching device 13 is not exclusive and that in one embodiment the switching device 13 may be a switch suitable for use in an energy storage environment, particularly for use in an electrical connection between an energy storage valve and a dc bus. Further, in a more detailed embodiment, to increase the opening speed of the switching system, the switching device 13 of the type having a faster operation speed than the disconnector may be selected to build the switching system, in particular in combination with the actual demand selection.

For example, in one embodiment, the switching device 13 may be a switching device of the type that implements a switching-off by means of an electromagnetic actuation principle, which obviously has a faster actuation speed than a disconnector that implements a switching-off by means of a gear transmission.

In order to facilitate understanding of the technical solution of the present application, in the following embodiments, the switch system is applied to a high-voltage direct-current direct-hanging energy storage system, and two ends of the contact switch are respectively connected to the energy storage valve and the direct-current bus for explanation, and it can be understood that in other embodiments, two ends of the contact switch may be connected to other devices or apparatuses that need to be isolated by a split brake, which is not described herein.

According to the scheme of the embodiment, the control device 21 has the functions of cutting out and putting in the energy storage valve, in the running process of the high-voltage direct-current direct-hanging energy storage system, the control device 21 monitors whether the energy storage valve has the requirement of cutting out running in real time, when the energy storage valve is detected to have the requirement of cutting out running, the control device 21 acts, a brake-separating related instruction is sent to the brake-separating executing mechanism 131 of the switch device 13, the brake-separating executing mechanism 131 is further controlled to act, and the brake-separating executing mechanism 131 drives the contact switch to separate brake.

It should be noted that the specific type of the switching device 13 is not limited only, and the switching device 13 may be correspondingly classified into a mechanical switching device, an electromagnetic switching device, a pneumatic switching device, and the like according to the execution principle of the opening actuator 131, and is not particularly limited. Accordingly, there may be a certain difference between the specific forms of the opening actuator 131, for example, in one embodiment, if the switching device 13 includes an electromagnetic switching device, the opening actuator 131 may include an exciting coil; if the switching device comprises a mechanical switching device, the opening actuator 131 may comprise an electric actuator.

It will be appreciated that the connection between the opening actuator 131 and the contact switch is not unique, and that there may be some difference in connection between the types of opening actuators 131. The opening actuating mechanism 131 comprises an exciting coil and can be in suction connection with the contact switch, and the opening actuating mechanism 131 comprises an electric actuating mechanism and can be directly or indirectly mechanically connected with the contact switch.

It can be appreciated that in an actual high-voltage direct-current direct-hanging energy storage system, since the direct-current bus generally includes a positive-end direct-current bus and a negative-end direct-current bus, when the energy storage valve is cut out, in order to improve the operation safety of the high-voltage direct-current direct-hanging energy storage system, the energy storage valve needs to be disconnected from the positive-end direct-current bus and the negative-end direct-current bus. The switching device 13 can be connected between the energy storage valve and the positive-side dc bus and between the energy storage valve and the negative-side dc bus. In addition, the switching system of the embodiment of the application is built for at least one switching device 13, thereby realizing switching redundancy and improving the switching reliability of the energy storage valve.

In the above-mentioned switching system, switching-on and switching-off operations are realized by switching on and off contact switches in the switching device 13, and the contact switches are driven by the switching-off executing mechanism 131. The switching system is further provided with two or more control devices 21, and the operation control of the opening actuator 131 is performed by the two or more control devices 21. Therefore, when the opening demand exists, the opening executing mechanism 131 of the switching device 13 only needs to receive the opening signal sent by any one of the control devices 21, so as to drive the contact switch to act and execute the opening function.

Referring to fig. 3, in some embodiments, the number of the control devices 21 includes two, namely a first control device 31 and a second control device 32, and the first control device 31 and the second control device 32 are respectively connected to the opening actuator 131.

Specifically, the number of the control devices 21 is not exclusive, as long as redundant control of the opening actuators 131 can be achieved, and two, three, or more may be provided, as long as each control device 21 is connected to the opening actuator 131 of the switching device 13. In the solution of the present embodiment, the number of the control devices 21 is two, and the first control device 31 and the second control device 32 are respectively, in this way, the redundant control of the switch device 13 is implemented with the minimum number of the control devices 21.

In the above-mentioned scheme, the number of the control devices 21 is two, namely the first control device 31 and the second control device 32, so that the redundancy control of the switch device 13 is realized, and the system cost can be effectively reduced.

Referring to fig. 4, in some embodiments, the opening actuator 131 includes a first opening actuator 41 and a second opening actuator 42, the first opening actuator 41 and the second opening actuator 42 are connected to the same contact switch, the first control device 31 is connected to the first opening actuator 41, and the second control device 32 is connected to the second opening actuator 42.

Specifically, in the solution of the present embodiment, based on the redundant arrangement of the control device 21, the switching-off executing mechanism 131 of the switching device 13 is also designed in a redundant manner, so that when a part of the switching-off executing mechanism 131 fails to execute switching-off due to a fault or the like, the switching-off function can still be realized by the rest of the switching-off executing mechanisms 131.

In the case where the two control devices 21 are redundant, in the solution of this embodiment, specifically, the two opening actuators 131 of the switch device 13 are provided, and the two opening actuators 131 are controlled by one control device 21, that is, the first control device 31 is connected to the first opening actuator 41, and the second control device 32 is connected to the second opening actuator 42.

In an actual application scenario, if the energy storage valve has a cut-out requirement, the first control device 31 and the second control device 32 both monitor and obtain at the same time, and then the first control device 31 acts to send a brake-off signal to the first brake-off executing mechanism 41, and the second control device 32 acts to send a brake-off signal to the second brake-off executing mechanism 42. At this time, only at least one of the first opening actuator 41 and the second opening actuator 42 is required to receive the opening signal, and the contact switch can be driven to operate, so as to realize the opening function.

In the above scheme, the opening and closing actuating mechanism 131 of the switching device 13 is redundantly arranged, and even if one opening and closing actuating mechanism 131 fails, the opening and closing function can be realized through the other opening and closing actuating mechanism 131, so that the opening and closing reliability of the opening and closing device is effectively improved.

Referring to fig. 5, in some embodiments, the first control device 31 includes a first control component 51, a first driving component Q1 and a first driving switch K1, the first driving component Q1 is connected to the first control component 51, and two ends of the first driving switch K1 are respectively connected to the first opening actuating mechanism 41.

And/or, in some embodiments, the second control device 32 includes a second control component 52, a second driving component Q2 and a second driving switch K2, where the second driving component Q2 is connected to the second driving switch K2, the second driving component Q2 is connected to the second control component 52, and two ends of the second driving switch K2 are respectively connected to the second brake separating actuator 42.

Specifically, the specific structures of the first control device 31 and the second control device 32 are not unique, as long as the switching-off signal can be issued to the corresponding switching-off actuator 131 under the condition that the energy storage valve has a switching-off requirement. The first control device 31 and the second control device 32 may be configured identically or differently, and may be selected in accordance with actual demands.

The control component is used for monitoring whether the energy storage valve has a cutting-out requirement or not and controlling the driving component to act under the condition that the energy storage valve has the cutting-out requirement. The driving component is a device for controlling the action of the driving switch. The driving switch is a device for sending a brake-off signal to the brake-off executing mechanism 131 through on-off action.

It should be noted that the specific type of control assembly, drive assembly and drive switch is not exclusive, and in one embodiment, the control assembly includes the energy storage valve control device 21, i.e. the energy storage valve control device 21 for controlling the switching, on-off, etc. operation of the energy storage valve during operation of the high voltage direct current hanging energy storage valve, as the control assembly. The driving assembly and the driving switch can be realized by adopting a relay, correspondingly, the driving assembly comprises an exciting coil of the relay, the driving switch comprises a contact switch of the relay, and the driving assembly and the driving switch can be connected in a sucking way. In this case, both ends of the driving switch are respectively connected to the opening actuating mechanism 131, and at this time, the closing of the driving switch will cause the opening actuating mechanism 131 to receive the opening signal, for example, by closing the driving switch, so that the opening actuating mechanism 131 conducts the connection with the power supply, thereby initiating the execution of the control related to opening.

In order to facilitate understanding of the technical solution of the present application, the control components related to the following embodiments may be considered as the energy storage valve control device 21, the driving components and the driving switches may be considered as the exciting coil and the corresponding contact switches thereof, and the opening signal is received by the opening actuator 131 by closing the driving components to conduct the loop of the opening actuator 131.

In one embodiment, the first control device 31 may include a first control component 51, a first driving component Q1, and a first driving switch K1, where the first control component 51 is configured to control the first driving component Q1 to act according to a cutting requirement of the energy storage valve, and after the first driving component Q1 acts, the state of the first driving switch K1 can be changed, so as to implement issuing of a brake release signal. In another embodiment, the second control device 32 may further include a second control component 52, a second driving component Q2, and a second driving switch K2, where the second control component 52 is configured to control the second driving component Q2 to act according to a cutting requirement of the energy storage valve, and after the second driving component Q2 acts, the state of the second driving switch K2 can be changed, so as to implement issuing of the opening signal.

Further, in a more detailed embodiment, the first control device 31 may further include a first control component 51, a first driving component Q1 and a first driving switch K1, while the second control device 32 may include a second control component 52, a second driving component Q2 and a second driving switch K2, so as to send a brake release signal to the first brake release actuator 41 and the second brake release actuator 42, respectively.

In the above-mentioned scheme, under the condition that the first control device 31 and the second control device 32 respectively drive the first brake separating actuator 41 and the second brake separating actuator 42, the first control device 31 and/or the second control device 32 can be provided with a control component, a driving component and a driving switch, so that the control of the brake separating actuator 131 is realized, and the brake separating device has the advantages of simple structure and cost saving.

Referring to fig. 6 in combination, in some embodiments, the first control device 31 includes a first control component 51, a first driving component Q1, a first driving switch K1 and a second driving switch K2, the first driving component Q1 is connected with the first driving switch K1 and the second driving switch K2 respectively, the first driving component Q1 is connected with the first control component 51, the first driving switch K1 and the second driving switch K2 are connected in parallel, and two ends formed in parallel are connected with the first opening actuator 41 respectively.

And/or, in some embodiments, the second control device 32 includes a second control component 52, a second driving component Q2, a third driving switch K3 and a fourth driving switch K4, where the second driving component Q2 is connected to the third driving switch K3 and the fourth driving switch K4, the second driving component Q2 is connected to the second control component 52, the third driving switch K3 and the fourth driving switch K4 are connected in parallel, and two ends formed in parallel are connected to the second switching-off actuator 42, respectively.

Specifically, when the first control device 31 and the second control device 32 control the operation of the first brake release actuator 41 and the second brake release actuator 42, respectively, the driving switch of the first control device 31 and/or the driving switch of the second control device 32 may be designed redundantly.

In more detail, in one embodiment, only the driving switches of the first control device 31 may be provided redundantly, that is, the first control device 31 includes the first control component 51, the first driving component Q1, the first driving switch K1, and the second driving switch K2. When the first control component 51 monitors that the energy storage valve has a cut-out requirement, the first control component 51 controls the first driving component Q1 to operate, and the first driving switch K1 and the second driving switch K2 are simultaneously driven through the first driving component Q1. Under the condition that at least one of the first driving switch K1 and the second driving switch K2 is in a normal state, the brake separating signals can be issued to the first brake separating executing mechanism 41, and the brake separating executing reliability of the first brake separating executing mechanism 41 is improved. In the solution of this embodiment, the second control device 32 may adopt the single-drive switch structure of the foregoing embodiment, that is, includes the second control component 52, the second drive component Q2, and the second drive switch K2, and implements the switching-off signal transmission through the second drive switch K2.

In a further embodiment, only the drive switches of the second control device 32 may be provided redundantly, i.e. the second control device 32 comprises the second control assembly 52, the second drive assembly Q2, the third drive switch K3 and the fourth drive switch K4. When the second control component 52 detects that the energy storage valve has a cutting-out requirement, the second control component 52 controls the second driving component Q2 to operate, and the third driving switch K3 and the fourth driving switch K4 are driven simultaneously through the second driving component Q2. When at least one of the third driving switch K3 and the fourth driving switch K4 is in a normal state, the brake release signals can be issued to the second brake release executing mechanism 42, so that the brake release executing reliability of the second brake release executing mechanism 42 is improved. In the solution of this embodiment, the first control device 31 may adopt the single-drive switch structure of the foregoing embodiment, that is, includes the first control component 51, the first drive component Q1, and the first drive switch K1, and implements the transmission of the opening signal through the first drive switch K1.

Further, in an embodiment, the driving switches of the first control device 31 and the second control device 32 may be set in a redundant manner, and the driving switches may be selected specifically in combination with an actual scene.

In the above-mentioned scheme, when the first control device 31 and the second control device 32 drive the first brake separating actuator 41 and the second brake separating actuator 42 respectively, the first control device 31 and/or the second control device 32 may include one control component, one driving component and two driving switches, that is, when the driving switches of the first control device 31 and/or the second device are redundant, the control of the brake separating actuator 131 is realized, so as to further improve the brake separating reliability of the switch system.

Referring to fig. 7, in some embodiments, the brake release actuator 131 includes a first brake release actuator 41 and a second brake release actuator 42, the first brake release actuator 41 and the second brake release actuator 42 are connected to the same contact switch, the first control device 31 is connected to the first brake release actuator 41 and the second brake release actuator 42, and the second control device 32 is connected to the first brake release actuator 41 and the second brake release actuator 42.

Specifically, in the solution of the present embodiment, the control device 21 is designed to include the first control device 31 and the second control device 32, so as to perform the switching-off redundancy control, and further, the switching-off actuator 131 in the switching device 13 is provided in a redundancy manner. Meanwhile, the first control device 31 is connected with the first opening actuator 41 and the second opening actuator 42, the second control device 32 is connected with the first opening actuator 41 and the second opening actuator 42, and the first control device 31 and the second control device 32 can drive the opening actuator 131 in a crossing manner.

By means of the scheme, as long as any one of the first control device 31 and the second control device 32 operates normally, the brake separating signals can be simultaneously sent to the first brake separating executing mechanism 41 and the second brake separating executing mechanism 42, and further, as long as any one of the first brake separating executing mechanism 41 and the second brake separating executing mechanism 42 is in a normal state, the brake separating function can be achieved, and the brake separating device has higher brake separating reliability.

In the above-mentioned scheme, the control device 21 and the opening and closing actuator 131 of the switching device 13 are all arranged in redundancy, and at the same time, the first opening and closing actuator 41 and the second opening and closing actuator 42 can both control operation through the first control device 31 and the second control device 32. In this way, any one of the control devices 21 fails, and the operation of the first opening actuator 41 and the second opening actuator 42 is not affected, so that the opening reliability of the switching system can be further improved.

Referring to fig. 8 in combination, in some embodiments, the first control device 31 includes a first control component 51, a first driving component Q1, a first driving switch K1 and a second driving switch K2, and the second control device 32 includes a second control component 52, a second driving component Q2, a third driving switch K3 and a fourth driving switch K4; the first driving component Q1 is respectively connected with the first driving switch K1 and the second driving switch K2, the second driving component Q2 is respectively connected with the third driving switch K3 and the fourth driving switch K4, the first driving component Q1 is connected with the first control component 51, the first driving switch K1 and the third driving switch K3 are connected in parallel, and two ends formed in parallel are respectively connected with the first opening actuating mechanism 41; the second control component 52 is connected to the second driving component Q2, the second driving switch K2 and the fourth driving switch K4 are connected in parallel, and two ends formed in parallel are respectively connected to the second brake separating actuator 42.

Specifically, in the solution of the present embodiment, the first control device 31 and the second control device 32 each include two drive switches that are provided redundantly, and cross control of the first brake release mechanism and the second brake release mechanism is implemented as an example. The first driving switch K1 and the second driving switch K2 of the first control device 31 are connected to the first brake separating actuator 41 and the second brake separating actuator 42, respectively, and the third driving switch K3 and the fourth driving switch K4 of the second control device 32 are connected to the first brake separating actuator 41 and the second brake separating actuator 42, respectively. After the first driving switch K1 and the third driving switch K3 are connected in parallel, the first brake separating executing mechanism 41 is connected, and after the second driving switch K2 and the fourth driving switch K4 are connected in parallel, the second brake separating executing mechanism 42 is connected.

Thus, when the first control component 51 monitors that the energy storage valve needs to be cut out, the first control component 51 controls the first driving component Q1 to operate no matter whether the second control component 52 monitors that the energy storage valve needs to be cut out, and under the action of the first driving component Q1, the first driving switch K1 and the second driving switch K2 act simultaneously. In this process, if the first driving switch K1 is operated successfully, a brake-off signal is sent to the first brake-off actuator 41, and if the second driving switch K2 is operated successfully, a brake-off signal is sent to the second brake-off actuator 42. Further, when the first brake release actuator 41 and/or the second brake release actuator 42 are normal, the contact switch is driven to operate, thereby realizing the brake release function.

Under the condition that the second control component 52 monitors that the energy storage valve needs to be cut out, no matter whether the first control component 51 monitors that the energy storage valve needs to be cut out or not, the second control component 52 controls the second driving component Q2 to operate, and under the action of the second driving component Q2, the third driving switch K3 and the fourth driving switch K4 act simultaneously. In this process, if the third driving switch K3 is operated successfully, a brake-off signal is sent to the first brake-off actuator 41, and if the fourth driving switch K4 is operated successfully, a brake-off signal is sent to the second brake-off actuator 42. Further, when the first brake release actuator 41 and/or the second brake release actuator 42 are normal, the contact switch is driven to operate, thereby realizing the brake release function.

In the above-mentioned scheme, when the first control device 31 and the second control device 32 can both drive the first brake separating actuator 41 and the second brake separating actuator 42 at the same time, the first control device 31 and/or the second control device 32 may include one control component, one driving component and two driving switches, that is, the first control device 31 and/or the second device can realize the control of the brake separating actuator 131 under the condition that the driving switches are redundant, so as to further improve the brake separating reliability of the switch system.

Referring to fig. 9, in some embodiments, the brake release actuator 131 includes a first brake release actuator 41, and the first control device 31 and the second control device 32 are respectively connected to the first brake release actuator 41.

Specifically, in the above embodiments, the redundant design of the opening and closing actuator 131 of the switching device 13 is taken as an example, and in the scheme of this embodiment, the opening and closing actuator 131 is not required to be provided in a redundant manner, but the first opening and closing actuator 41 is driven together by the first control device 31 and the second control device 32 which are provided in a redundant manner, so long as any one of the first control device 31 and the second control device 32 normally issues an opening and closing signal, and the opening and closing function can be realized under the condition that the opening and closing actuator 131 is normal.

In the above scheme, the number of the opening actuating mechanisms 131 is one, and the opening actuating mechanisms 131 perform redundancy control through the first control device 31 and the second control device 32, so that the system cost is effectively reduced when the opening redundancy control is realized.

Referring to fig. 9, in some embodiments, the first control device 31 includes a first control component 51, a first driving component Q1 and a first driving switch K1, the first driving component Q1 is connected to the first driving switch K1, the first control component 51 is connected to the first driving component Q1, and two ends of the first driving switch K1 are respectively connected to the first opening actuating mechanism 41.

And/or, in some embodiments, the second control device 32 includes a second control component 52, a second driving component Q2, and a second driving switch K2, where the second driving component Q2 is connected to the second driving switch K2, the second control component 52 is connected to the second driving component Q2, and two ends of the second driving switch K2 are respectively connected to the first opening actuating mechanism 41.

Specifically, in the case where the first control device 31 and the second control device 32 jointly control the first brake separating actuator 41, the structures of the first control device 31 and the second control device 32 may be the same or different, and the selection may be specifically performed in combination with the actual requirements.

In one embodiment, the first control device 31 may be configured as a single-drive switch structure, that is, the first control device 31 includes the first control component 51, the first driving component Q1 and the first driving switch K1, and the single-drive switch is used to send the opening signal to the first opening actuator 41. In the solution of this embodiment, the second control device 32 may be provided in a redundant drive switch configuration, i.e. the second control device 32 comprises a second control assembly 52, a second drive assembly Q2, a third drive switch K3 and a fourth drive switch K4.

In another embodiment, the second control device 32 may be configured as a single-drive switch structure, that is, the second control device 32 includes a second control component 52, a second driving component Q2 and a second driving switch K2, and the single-drive switch is used to send the opening signal to the first opening actuator 41. In the solution of this embodiment, the first control device 31 may be provided in a redundant drive switch configuration, i.e. the first control device 31 comprises a first control assembly 51, a first drive assembly Q1, a first drive switch K1 and a second drive switch K2.

Further, in one embodiment, the first control device 31 and the second control device 32 may be configured as a single-drive switch structure. Alternatively, in another embodiment, the first control device 31 and the second control device 32 are both configured as redundant dynamic switch structures, and the first control device and the second control device are specifically selected according to actual requirements.

In the above scheme, under the condition that the opening actuating mechanism 131 is not provided with redundancy, the first control device 31 and/or the second control device 32 can be provided with a control component, a driving component and a driving switch, so that the control of the first opening actuating mechanism 41 is realized, and the device has the advantages of simple structure and cost saving.

In order to facilitate an understanding of the technical solution of the present application, the following explanation is made in connection with more detailed embodiments. The switch device 13 is provided with two sets of opening and closing actuating mechanisms 131, namely a first opening and closing actuating mechanism 41 and a second opening and closing actuating mechanism 42, wherein any opening and closing mechanism is normal, the normal opening and closing function can be completed, and the opening and closing actuating mechanism 131 can be provided with a shunt coil or an electric actuating mechanism.

In addition, two control devices 21 are also configured for the switch device 13, namely a first control device 31 and a second control device 32, the internal electrical configurations of the first control device 31 and the second control device 32 are identical, the two sets of control devices 21 are redundant, the operation of the switch system is monitored and controlled when two sets of control devices control the sub-processes, and the failure of any set of control devices 21 does not affect the operation of the switch system.

The control device 21 comprises a control assembly, a driving assembly and two driving switches, wherein both driving switches are driven by the driving assembly. In more detail, two normally open contact switches are configured for the two drive switches, and the drive assembly is configured as an excitation coil of the relay. The first driving switch K1 of the first control device 31 and the third driving switch K3 of the second control device 32 are connected in parallel, and then commonly connected to the first opening actuator 41, and the second driving switch K2 of the first control device 31 and the fourth driving switch K4 of the second control device 32 are connected in parallel, and then commonly connected to the second opening actuator 42.

When the opening is required to be performed, the first control component 51 controls the first driving group to be powered on, so that the first driving switch K1 and the second driving switch K2 are closed, and the second control component 52 controls the second driving group to be powered on, so that the third driving switch K3 and the fourth driving switch K4 are closed. In this process, only one of the lines is normal, and the first opening actuator 41 or the second opening actuator 42 of the switching device 13 will obtain the opening signal and perform the opening function, thereby cutting the energy storage valve.

Referring to fig. 1 in combination, the embodiment of the application further provides an energy storage system, which includes a dc bus 12, an energy storage valve 11 and the above switch system.

Specifically, the structure and arrangement of the switch system are shown in the foregoing embodiments and the drawings, and are not described herein. The energy storage valve is a device which is formed by cascading a plurality of energy storage valve submodules and has an electric energy access function. The energy storage valve submodule is the smallest modularized unit for realizing electric energy access in the system, and is generally integrated with a power unit and an energy storage unit.

In this embodiment, the switching device 13 may be disposed between the dc bus 12 and the energy storage valve 11, and the energy storage valve 11 is connected to the dc bus 12 by a contact switch of the switching device 13, and the contact switch is driven by a switching actuator 131 in the switching device 13. The switching system is further provided with two or more control devices 21, and the operation control of the opening actuator 131 is performed by the two or more control devices 21. Therefore, when there is a need to switch the energy storage valve 11 out of operation, the switching-off actuator 131 of the switching device 13 can drive the contact switch to operate only by receiving the switching-off signal sent from any one of the control devices 21, and perform the switching-off function, thereby disconnecting the energy storage valve 11 from the dc bus 12. By this means, the switching-out control of the energy storage valve 11 is performed by the switching device 13, and the switching-out of the switching device 13 is performed by two or more control devices 21 which are provided redundantly, so that the switching-out control of the switching device 13 can be performed even if a part of the control devices 21 fails, and the switching-out reliability of the energy storage valve 11 can be effectively improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. 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 (10)

1. A switching system, comprising:

the switching device comprises a brake separating executing mechanism and a contact switch, and the brake separating executing mechanism is connected with the contact switch;

and the two or more control devices are respectively connected with the brake separating executing mechanism.

2. The switching system according to claim 1, wherein the number of control devices includes two, a first control device and a second control device, respectively, the first control device and the second control device being connected to the opening actuator, respectively.

3. The switching system according to claim 2, wherein the opening actuator comprises a first opening actuator and a second opening actuator, the first opening actuator and the second opening actuator are connected to the same contact switch, the first control device is connected to the first opening actuator, and the second control device is connected to the second opening actuator.

4. The switch system of claim 3, wherein the first control device comprises a first control component, a first driving component and a first driving switch, the first driving component is connected with the first control component, and two ends of the first driving switch are respectively connected with the first opening actuating mechanism;

and/or the second control device comprises a second control assembly, a second driving assembly and a second driving switch, wherein the second driving assembly is connected with the second driving switch, the second driving assembly is connected with the second control assembly, and two ends of the second driving switch are respectively connected with the second brake separating executing mechanism.

5. The switching system according to claim 3, wherein the first control device comprises a first control component, a first driving switch and a second driving switch, the first driving component is respectively connected with the first driving switch and the second driving switch, the first driving component is connected with the first control component, the first driving switch and the second driving switch are connected in parallel, and two ends formed in parallel are respectively connected with the first opening actuating mechanism;

And/or, the second control device comprises a second control component, a second driving component, a third driving switch and a fourth driving switch, wherein the second driving component is respectively connected with the third driving switch and the fourth driving switch, the second driving component is connected with the second control component, the third driving switch and the fourth driving switch are connected in parallel, and two ends formed by the parallel connection are respectively connected with the second brake separating executing mechanism.

6. The switching system according to claim 2, wherein the opening actuator comprises a first opening actuator and a second opening actuator, the first opening actuator and the second opening actuator are connected to the same contact switch, the first control device is connected to the first opening actuator and the second opening actuator, and the second control device is connected to the first opening actuator and the second opening actuator.

7. The switching system of claim 6, wherein the first control device comprises a first control assembly, a first drive switch, and a second drive switch, and the second control device comprises a second control assembly, a second drive assembly, a third drive switch, and a fourth drive switch;

The first driving assembly is connected with the first driving switch and the second driving switch respectively, the second driving assembly is connected with the third driving switch and the fourth driving switch respectively, the first driving assembly is connected with the first control assembly, the first driving switch and the third driving switch are connected in parallel, and two ends formed in parallel are connected with the first brake separating executing mechanism respectively; the second control assembly is connected with the second driving assembly, the second driving switch and the fourth driving switch are connected in parallel, and two ends formed by the parallel connection are respectively connected with the second brake separating executing mechanism.

8. The switching system according to claim 2, wherein the opening actuator comprises a first opening actuator, and the first control device and the second control device are respectively connected to the first opening actuator.

9. The switch system of claim 8, wherein the first control device comprises a first control assembly, a first driving assembly and a first driving switch, the first driving assembly is connected with the first driving switch, the first control assembly is connected with the first driving assembly, and two ends of the first driving switch are respectively connected with the first opening actuating mechanism;

And/or, the second control device comprises a second control assembly, a second driving assembly and a second driving switch, the second driving assembly is connected with the second driving switch, the second control assembly is connected with the second driving assembly, and two ends of the second driving switch are respectively connected with the first brake separating executing mechanism.

10. An energy storage system, characterized by comprising a direct current bus, an energy storage valve and the switch system of any one of claims 1-9, wherein two ends of the contact switch are respectively connected with the direct current bus and the energy storage valve.