Centralized pcs emergency stop system, device and equipment

Abstract

The application discloses a centralized PCS emergency stop system, device and equipment. The system comprises an emergency stop button, a power conversion module, a first switch and a circuit breaker module, wherein the circuit breaker module comprises an under-voltage release. The power supply of the under-voltage release is obtained from the inside of the system. When the emergency stop button is triggered, the system is not affected by the external system power supply. When the emergency stop button is pressed due to an emergency of the system, the under-voltage release is directly actuated, thereby protecting the system in time and avoiding the occurrence of safety accidents. When the system voltage is lower than the rated voltage setting value, the under-voltage release is actuated, thereby disconnecting the circuit breaker and realizing the emergency stop of the system. According to the embodiment of the application, the under-voltage release and the emergency stop button are used in cooperation, so that the double protection of the system can be realized, thereby improving the overall safety protection of the system.

Description

Technical Field

[0001] This application belongs to the field of automated centralized PCS control technology, and particularly relates to a centralized PCS emergency stop system, device and equipment. Background Technology

[0002] With the continuous rise of new energy fields such as energy storage, photovoltaics, and microgrids, the functions and safety of core equipment such as DC battery compartments, centralized PCS, and step-up integrated units have also attracted the attention of those skilled in the art.

[0003] The centralized PCS emergency stop system is a key protection mechanism for ensuring personal safety, equipment safety, and grid stability, with applications covering a wide range of scenarios from routine maintenance to extreme failures. When personnel enter the energy storage container or PCS cabinet for maintenance, triggering the emergency stop button can instantly cut off the high-voltage circuit, preventing electric shock or arcing injuries. Alternatively, it can be applied to emergencies such as fire / explosion risks, battery thermal runaway, or PCS short circuits, where the emergency stop circuit can quickly isolate faulty equipment and prevent the accident from escalating. It also provides emergency shutdown for hardware failures in the PCS, such as inverter overcurrent, IGBT failure, and DC-side short circuits.

[0004] Existing technical solutions often use an emergency stop switch to trigger an emergency stop signal, and control the intermediate relay to disconnect via the internal software of the PCS control board. This causes the shunt trip circuit in the circuit breaker to conduct, and the main circuit breaker to open, thereby achieving an emergency stop and power cut-off of the equipment. However, because the shunt trip is controlled by the system power supply, when the system power suddenly fails, pressing the emergency stop button while the shunt trip is powered off cannot achieve an emergency stop, thus posing a safety hazard. Utility Model Content

[0005] This application provides a centralized PCS emergency stop system, device, and equipment. By adding an undervoltage release device to the circuit breaker module, when an emergency occurs and the emergency stop button is pressed, the undervoltage release device is directly activated, thereby protecting the system in a timely manner and preventing safety accidents. The undervoltage release device and the emergency stop button work together to achieve dual protection of the system, thereby improving the overall safety of the system.

[0006] In a first aspect, embodiments of this application provide a centralized PCS emergency stop system, comprising: an emergency stop button, a power conversion module, a first switch, and a circuit breaker module, wherein the circuit breaker module includes an undervoltage release device; one end of the emergency stop button is electrically connected to a first input port of the power conversion module, and the other end of the emergency stop button is electrically connected to a second input port of the power conversion module; a first output port of the power conversion module is electrically connected to one end of the first switch, and a second output port of the power conversion module is electrically connected to one end of the first switch; the power conversion module is used to generate a control signal based on the state of the emergency stop button, and the control signal is used to control the first switch. The first switch is in an ON state; one end of the first switch is electrically connected to the output terminal of the first power supply and the first input terminal of the circuit breaker module, and the other end of the first switch is electrically connected to one end of the undervoltage release corresponding to the second input terminal of the circuit breaker module. The first switch is used to change the ON state of the first switch according to the control signal, and control the working state of the undervoltage release through the ON state; the other end of the undervoltage release serves as the second output terminal of the circuit breaker module and is electrically connected to the input terminal of the first power supply and the first output terminal of the circuit breaker module. The undervoltage release is used to initiate emergency stop control when the first switch is in an OFF state.

[0007] In one possible implementation, the first switch includes a first relay; one end of the coil in the first relay is electrically connected to a first output port of the power conversion module, and the other end of the coil in the first relay is electrically connected to a second output port of the power conversion module; one end of a first contact switch in the first relay is electrically connected to the output terminal of the first power supply and the first input terminal of the circuit breaker module, and the other end of the first contact switch in the first relay is electrically connected to one end of the undervoltage release in the second input terminal of the circuit breaker module. The first contact switch is used to be in an open state when the coil in the first relay is energized, so that the undervoltage release responds to emergency stop control, and to control the first contact switch to be in an open state when the coil in the first relay is not energized; one end of a second contact switch in the first relay is electrically connected to one end of a power management circuit, and the other end of the second contact switch in the first relay is electrically connected to the other end of the power management circuit. The second contact switch is used to connect the power management circuit and the power conversion module, so that the power management circuit obtains the feedback signal from the power conversion module.

[0008] In one possible implementation, the circuit breaker module further includes a shunt trip unit; one end of the shunt trip unit serves as the third input terminal of the circuit breaker module, and the other end of the shunt trip unit serves as the third output terminal of the circuit breaker module. The shunt trip unit is used to initiate emergency stop control when the first power supply is operating normally. After the emergency stop signal of the emergency stop button is generated into a control signal by the power conversion module, the circuit in which the shunt trip unit is located is disconnected to achieve emergency stop control.

[0009] In one possible implementation, the centralized PCS emergency stop system further includes a second relay; one end of the second relay is electrically connected to the output terminal of the first power supply, and the other end of the second relay is electrically connected to one end of the shunt trip unit in the circuit breaker module.

[0010] In one possible implementation, the circuit breaker module further includes an energy storage motor; one end of the energy storage motor is electrically connected to the output terminal of the first power supply as the fourth input terminal of the circuit breaker module, and the other end of the energy storage motor is electrically connected to the input terminal of the first power supply as the fourth output terminal of the circuit breaker module. The energy storage motor is used to provide energy storage signals to the circuit breaker module.

[0011] In one possible implementation, the centralized PCS emergency stop system further includes a third relay; one end of the third relay is electrically connected to the output terminal of the first power supply, and the other end of the third relay is electrically connected to one end of the energy storage motor in the circuit breaker module.

[0012] In one possible implementation, the circuit breaker module further includes a closing button; one end of the closing button serves as the fifth input terminal of the circuit breaker module and is electrically connected to the output terminal of the first power supply, and the other end of the closing button serves as the fifth output terminal of the circuit breaker module and is electrically connected to the input terminal of the first power supply. The closing button is used to restart the circuit breaker module when it is in the open state.

[0013] In one possible implementation, the centralized PCS emergency stop system further includes a fourth relay; one end of the fourth relay is electrically connected to the output terminal of the first power supply, and the other end of the fourth relay is electrically connected to one end of the closing button in the circuit breaker module.

[0014] Secondly, embodiments of this application provide a centralized PCS emergency stop device, the device comprising: a power management circuit and a centralized PCS emergency stop system as described in any of the first aspects, the power management circuit being electrically connected to the power conversion module in the centralized PCS emergency stop system, and the power management circuit being used to receive feedback signals emitted by the power conversion module in the centralized PCS emergency stop system.

[0015] Thirdly, embodiments of this application provide a centralized PCS emergency stop device, the device comprising: a host and a centralized PCS emergency stop device as described in the second aspect, the host being electrically connected to the centralized PCS emergency stop device, and used to perform emergency stop control on the host by means of the centralized PCS emergency stop device when the host malfunctions or needs to be emergency stopped.

[0016] This application provides a centralized PCS emergency stop system, device, and equipment. By adding an undervoltage release device to the circuit breaker, the undervoltage release device is powered internally and is unaffected by external system power when the emergency stop button is triggered. When an emergency occurs and the emergency stop button is pressed, the undervoltage release device is directly activated, thus protecting the system and preventing accidents. Furthermore, if the system voltage drops below the rated voltage setting, the undervoltage release device will activate, disconnecting the circuit breaker and achieving an emergency stop. The combined use of the undervoltage release device and the emergency stop button provides dual protection for the system, thereby improving overall system safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a centralized PCS emergency stop system provided in an embodiment of this application; Figure 2 This is a schematic diagram of another centralized PCS emergency stop system provided in the embodiments of this application; Figure 3 This is a schematic diagram of another centralized PCS emergency stop system provided in the embodiments of this application; Figure 4 This is a schematic diagram of another centralized PCS emergency stop system provided in the embodiments of this application; Figure 5 This is a schematic diagram of yet another centralized PCS emergency stop system provided in the embodiments of this application; Figure 6This is a schematic diagram of a centralized PCS emergency stop device provided in an embodiment of this application; Figure 7 This is a schematic diagram of a centralized PCS emergency stop device provided in an embodiment of this application. Detailed Implementation

[0019] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0021] The Power Conversion System (PCS) converts and stores external electrical energy to power internal circuits. In a centralized PCS, the digital input (DI) port connects to the emergency stop button to obtain its status signal in real time. The digital output (DO) port connects indirectly to an external circuit breaker module via switches and other control devices to control the on / off state of the switches, thereby changing the operating state of the circuit breaker module. In industrial automation control systems, the emergency stop feedback signal is received through the DI port, while the DO port executes the emergency stop triggering control action. The Battery Management System (BMS) manages the power supply, obtains the status signals from the PCS in real time, and feeds back the corresponding feedback signals to the PCS.

[0022] An under-voltage release is a protection device used in power systems. Its core function is to monitor line voltage and automatically cut off the power supply when the voltage is lower than a set value, so as to prevent equipment from being damaged by under-voltage. It detects voltage in real time via an internal sensor. When the voltage is lower than the threshold (e.g., 40% of the rated voltage), it quickly cuts off the power supply; after the voltage recovers, the circuit needs to be reset manually or automatically. Under normal voltage conditions, the electromagnet of the under-voltage release attracts the armature and keeps the circuit breaker module closed; under under-voltage conditions, the electromagnetic force of the under-voltage release is insufficient, the spring pulls the armature to hit the lever, and the mechanical linkage triggers the tripping mechanism to trip, realizing power-off control. It is commonly used to protect motors and production line equipment from voltage fluctuations, and prevent under-voltage faults of transformers and power distribution equipment in power systems. In domestic applications, it prevents damage to electrical appliances such as air conditioners and refrigerators caused by unstable voltage in household distribution boxes, and solves the problem of frequent tripping.

[0023] A centralized PCS emergency stop system is a key protection mechanism that ensures personal safety, equipment safety and power grid stability. It is mainly applied to core equipment in new energy fields such as energy storage, photovoltaics and microgrids, for example: DC battery compartments, centralized PCS, measurement and control units of integrated boost machines, etc. Its application scenarios cover various situations from daily operation and maintenance to extreme faults: for example, during operation and maintenance, when workers enter an energy storage container or a PCS cabinet for maintenance, triggering the emergency stop button can instantly cut off the high-voltage circuit, avoiding electric shock or arc injury. Or when there is a risk of fire / explosion, in emergency situations such as battery thermal runaway and PCS short circuit, the emergency stop circuit can quickly isolate faulty equipment and prevent the accident from expanding. It also enables emergency shutdown when hardware faults such as inverter overcurrent, IGBT explosion and DC side short circuit occur during PCS failure.

[0024] At present, the commonly used solution is to connect an emergency stop switch in series with a pair of DI interfaces of the PCS control board. When a person manually presses the emergency stop button, the control board receives a disconnection signal, and then the software controls a pair of DO ports of the PCS control board to close. At the same time, the relay coil connected in series with the DO ports is energized, a set of normally open contacts of the relay (the normally open contact is connected in series with the shunt release) closes, and another set of normally open contacts (the normally open contact is connected in series with the BMS and the measurement and control circuit) closes. The shunt release circuit is conducted, and the main circuit breaker disconnects, thereby realizing the functions of equipment power-off and linkage feedback with BMS and measurement and control equipment. However, since the control power supply of the shunt release is controlled by the system power supply, when the emergency stop button is pressed in the system power-off state, the shunt release has been powered off and does not work, so the system emergency stop cannot be realized, which further causes potential safety hazards.

[0025] To address the issue that the shunt trip unit cannot function due to power failure in the event of a system power outage, thus preventing the system from achieving an emergency stop, this application provides an improved centralized PCS emergency stop system. An undervoltage trip unit is added inside the circuit breaker module, powered by the system's internal primary power supply. This system is independent of the system power supply; regardless of whether the system power is off, when the emergency stop button is pressed, the switch connected to the output port is disconnected via the PCS control board, thereby disconnecting the undervoltage trip unit connected in series with the switch and achieving a system emergency stop.

[0026] The structure of the centralized PCS emergency stop system provided in the embodiments of this application will be described below.

[0027] Figure 1 This is a schematic diagram of a centralized PCS emergency stop system provided in an embodiment of this application. Figure 1 As shown, the structure of a centralized PCS emergency stop system specifically includes: The components include an emergency stop button SA1, a power conversion module TF-2, a first switch K, and a circuit breaker module QF1, wherein the circuit breaker module includes an undervoltage release unit Qundervoltage.

[0028] One end of the emergency stop button SA1 is electrically connected to the first input port of the power conversion module TF-2, and the other end of the emergency stop button SA1 is electrically connected to the second input port of the power conversion module TF-2.

[0029] The first output port of the power conversion module TF-2 is electrically connected to one end of the first switch K, and the second output port of the power conversion module TF-2 is electrically connected to one end of the first switch K. The power conversion module TF-2 is used to generate a control signal based on the state of the emergency stop button SA1. The control signal is used to control the conduction state of the first switch K.

[0030] One end of the first switch K is electrically connected to the output terminal of the first power supply VCC and the first input terminal of the circuit breaker module QF1. The other end of the first switch K is electrically connected to one end of the undervoltage release Q-type circuit breaker corresponding to the second input terminal of the circuit breaker module QF1. The first switch K is used to change the conduction state of the first switch K according to the control signal, and control the working state of the undervoltage release Q-type circuit breaker through the conduction state.

[0031] The other end of the undervoltage release Q is electrically connected to the input of the first power supply VCC and the first output of the circuit breaker module QF1 as the second output terminal of the circuit breaker module QF1. The undervoltage release Q is used to initiate emergency stop control when the first switch K is in the open state.

[0032] The first power supply, VCC, supplies power to the circuit breaker module QF1. The emergency stop button mentioned here can be understood as a button with manual or mechanical control. During normal operation, the emergency stop button is internally conductive and does not affect the circuit control logic; it is internally disconnected when the emergency stop button is pressed.

[0033] The first switch mentioned here can be understood as a device that functions as a switch, such as a single-pole switch, transistor, thyristor, relay, etc. The power conversion module and the circuit breaker module are connected through the first switch. The undervoltage release is located inside the circuit breaker's internal structure. The first power supply VCC mentioned here can be understood as the equipment's operating voltage, such as 220V. Different voltage values ​​are set according to different circuit application scenarios.

[0034] according to Figure 1 The provided diagram illustrates that, based on the constructed emergency stop system, in the event of a sudden power outage, to protect the system's functional circuits from damage, the emergency stop button SA1 needs to be manually pressed. This causes the internal circuitry of the emergency stop button SA1 to disconnect, disconnecting the receiving port loop of the power conversion module TF-2 and converting it into an emergency stop signal. This emergency stop signal then controls the first switch K connected to the output port to disconnect. Since the first switch K is connected to the undervoltage release Q-under in the circuit breaker module QF1, the disconnection of the first switch K will trigger the undervoltage release Q-under to disconnect, thus achieving power-off control of the circuit breaker module QF1 and protecting the system circuits from being affected.

[0035] During normal power supply, if you want to actively shut down the circuit, you can also use the undervoltage release to detect the system output voltage. When the output voltage is lower than the threshold voltage of the undervoltage release (for example, the threshold voltage is set to 35% of the output voltage), the undervoltage release will automatically disconnect under the undervoltage environment, causing the circuit breaker module to lose power, thus achieving emergency stop control. This provides dual protection for the system, thereby improving overall safety.

[0036] This application provides a centralized PCS emergency stop system. By setting up a circuit breaker module including an emergency stop button, a power conversion module, a first switch, and an undervoltage release device, the undervoltage release device is connected to an internal independent first power supply in the system, providing an independent power supply for the undervoltage release device. In the event of a sudden power outage, the undervoltage release device in the circuit breaker module is unaffected by the system power supply. After pressing the emergency stop button, the input port circuit of the power conversion module is disconnected, generating an emergency stop signal. This signal controls the first switch connected to the output port of the power conversion module to disconnect, thereby controlling the undervoltage release device connected to the first switch to disconnect, achieving circuit breaker module disconnection control and emergency stop protection, unaffected by the system power supply.

[0037] Figure 2 This is a schematic diagram of another centralized PCS emergency stop system provided in the embodiments of this application. Figure 2 This is based on the previous embodiment. Figure 2 The provided diagram shows the specific structure of a centralized PCS emergency stop system, including: Emergency stop button SA1, power conversion module TF-2, first switch K, circuit breaker module QF1, undervoltage release Q-undervoltage.

[0038] according to Figure 2 The provided diagram shows that the first switch K in the centralized PCS emergency stop system includes a first relay KA1.

[0039] One end of the coil 110 in the first relay KA1 is electrically connected to the first output port DO1+ of the power conversion module TF-2, and the other end of the coil 110 in the first relay KA1 is electrically connected to the second output port DO1- of the power conversion module TF-2.

[0040] One end of the first contact switch 120 in the first relay KA1 is electrically connected to the output terminal of the first power supply VCC and the first input terminal of the circuit breaker module QF1. The other end of the first contact switch 120 in the first relay KA1 is electrically connected to one end of the undervoltage release Q-type in the second input terminal of the circuit breaker module QF1. The first contact switch 120 is used to be in the open state when the coil in the first relay KA1 is energized, so that the undervoltage release Q-type responds to the emergency stop control, and to control the first contact switch 120 to be in the open state when the coil in the first relay KA1 is not energized.

[0041] One end of the second contact switch 130 in the first relay KA1 is electrically connected to one end of the power management circuit BMS, and the other end of the second contact switch 130 in the first relay KA1 is electrically connected to the other end of the power management circuit BMS. The second contact switch 130 is used to connect the power management circuit BMS and the power conversion module TF-2 so that the power management circuit BMS can obtain the feedback signal of the power conversion module TF-2.

[0042] By setting the first switch as a relay structure, and utilizing the indirect connection between the coil in the relay and multiple contact switches, the circuit breaker module QF1 and the power conversion module TF-2 can be indirectly connected. The operating status will not be affected by the difference in voltage between the two. That is, when the internal voltage of the power conversion module TF-2 changes, it will not directly affect the input and output voltage of the circuit breaker module QF1, thus playing a role in isolation protection.

[0043] Furthermore, connection points are set in the circuit breaker module to directly connect the two ends of the circuit breaker module to the two ends of the first power supply VCC, thereby directly providing power to the circuit breaker module.

[0044] according to Figure 2 According to the schematic diagram provided, when a system power failure occurs, after manually pressing the emergency stop button SA1, the loop between the first input port DI1+ and the second input port DI1- in the power conversion module TF-2 is disconnected. After the power conversion module TF-2 receives the emergency stop signal, it controls the loop where the first output port DO1+ and the second output port DO1- are located to close, so that the coil 110 of the first relay KA1 in the loop where the first output port DO1+ and the second output port DO1- are located is energized to generate inductance. Through electromagnetic induction, the first contact switch 120 in the first relay KA1 is controlled to switch from the normally closed state to the disconnected state, thereby disconnecting the undervoltage release Q_欠 in the circuit breaker module QF1. The undervoltage release Q_欠 automatically trips under low voltage conditions, realizing the power-off control of the circuit breaker module QF1 and realizing the emergency stop of the system. Meanwhile, the second contact switch 130 in the first relay KA1 is connected to the battery management system BMS, which feeds back the current voltage signal in the emergency stop system to the battery management system BMS in real time to realize linkage feedback.

[0045] According to Figure 2 According to the schematic diagram provided, the first relay is connected to the first power supply, and the first power supply VCC (e.g., 220V) is used to supply power to the undervoltage release connected to the first relay. When the system voltage of the emergency stop system suddenly cuts off, the first power supply is not affected, thereby ensuring that the undervoltage release still operates normally under the sudden power failure condition, and can realize emergency stop control without being affected by the system voltage.

[0046] Meanwhile, by utilizing the characteristic of the undervoltage release, when it is detected that the voltage fluctuation drops below 35% of the rated voltage of the undervoltage release during the operation of the emergency stop system, to ensure the safety of circuit devices, the undervoltage release will automatically trigger tripping, realize the disconnection control of the circuit breaker module and start automatic emergency stop. The advantage of this design is that the system also supplies power to other devices. If other components are sensitive to voltage fluctuations, they cannot work under normal working conditions. Long-term operation will affect the machine and thus shorten the electrical life. The undervoltage release device can monitor the system voltage, and will automatically disconnect the system if the fluctuation is large. Therefore, the device can not only realize manual emergency stop, but also detect system voltage fluctuations to protect other devices, and reduce the impact of low voltage on the circuit system.

[0047] This application provides an emergency stop system. In the event of a system power failure, the power conversion module controls the output port to conduct, energizing the first relay connected to the output port. This energizes the first contact switch in the first relay, causing the undervoltage release to disconnect, thus achieving emergency stop control. Furthermore, utilizing the characteristics of the undervoltage release, it automatically triggers disconnection when the system operating voltage drops to a certain percentage of the undervoltage release's rated voltage, also achieving emergency stop. This reduces the risk of damage to other circuit components due to low voltage and improves circuit safety.

[0048] Figure 3 This is a schematic diagram of another centralized PCS emergency stop system provided in the embodiments of this application. Figure 3 This is based on the previous embodiment. Figure 3 The provided diagram shows the specific structure of a centralized PCS emergency stop system, including: Emergency stop button SA1, power conversion module TF-2, first relay KA1, circuit breaker module QF1, undervoltage release Q-undervoltage.

[0049] according to Figure 3 The provided diagram shows that the circuit breaker module in the centralized PCS emergency stop system also includes a shunt trip unit F.

[0050] One end of the shunt trip unit F is used as the third input terminal of the circuit breaker module QF1, and the other end of the shunt trip unit F is used as the third output terminal of the circuit breaker module QF1. The shunt trip unit F is used to start emergency stop control when the first power supply VCC is running normally. After the emergency stop signal of the emergency stop button is generated into a control signal by the power conversion module TF-2, the circuit where the shunt trip unit F is located is disconnected to realize emergency stop control.

[0051] according to Figure 3 The provided diagram shows that the shunt trip unit F is installed inside the circuit breaker module QF1. During normal system operation, i.e., when the system is not experiencing a power outage or low voltage, and when there is a need to inspect or repair the circuit structure, it is necessary to perform an emergency stop on the running system. At this time, by disconnecting the connection between the first power supply VCC and the shunt trip unit F, the shunt trip unit F automatically disconnects, thereby de-energizing the circuit breaker module QF1 and achieving the purpose of emergency stop. The emergency stop control is achieved by utilizing the function of the shunt trip unit F.

[0052] according to Figure 3 The diagram provided shows that the centralized PCS emergency stop system also includes a second relay KM1.

[0053] One end of the second relay KM1 is electrically connected to the output terminal of the first power supply VCC, and the other end of the second relay KM1 is electrically connected to one end of the shunt trip unit F in the circuit breaker module QF1.

[0054] The first power supply is connected to the shunt trip unit via the second relay, controlling the power supply status of the shunt trip unit. When the second relay is closed, the shunt trip unit is controlled to be in a closed operating state; when the second relay is open, the shunt trip unit is controlled to open, thereby changing the operating state of the shunt trip unit through the second relay.

[0055] During system operation, when it is necessary to stop the equipment to check circuit components or perform maintenance, the second relay is disconnected by software control, thereby disconnecting the connection between the first power supply and the shunt trip unit. The shunt trip unit then disconnects, realizing the power outage of the circuit breaker module. Effective emergency stop is achieved through the shunt trip unit and software control.

[0056] The emergency stop system provided in this application, in the event of a power outage, allows for emergency stop control by pressing the emergency stop button, which uses the power conversion module to control the first contact switch of the first relay to open, thereby disconnecting the undervoltage release. Simultaneously, even when the system is not experiencing a power outage, due to voltage fluctuations, the undervoltage release automatically trips when the voltage drops to the set value of its rated voltage, similarly achieving emergency stop control. Furthermore, under normal system operation, the second relay can be disconnected via software, causing the shunt trip to disconnect and thus de-energizing the circuit breaker, further enhancing the operability and safety of the emergency stop system.

[0057] Figure 4 This is a schematic diagram of another centralized PCS emergency stop system provided in the embodiments of this application. Figure 4 This is based on the previous embodiment. Figure 4 The provided diagram shows the specific structure of a centralized PCS emergency stop system, including: Emergency stop button SA1, power conversion module TF-2, first relay KA1, circuit breaker module QF1, undervoltage release Q-undervoltage, shunt trip release F-shunt, second relay KM1.

[0058] according to Figure 4 The diagram provided shows that the circuit breaker module QF1 in the centralized PCS emergency stop system also includes an energy storage motor M.

[0059] One end of the energy storage motor M is electrically connected to the output of the first power supply VCC as the fourth input terminal of the circuit breaker module QF1, and the other end of the energy storage motor M is electrically connected to the input of the first power supply VCC as the fourth output terminal of the circuit breaker module QF1. The energy storage motor M is used to provide energy storage signals to the circuit breaker module QF1.

[0060] The energy storage motor M stores energy for the circuit breaker module QF1, ensuring its normal operation. During operation, the circuit breaker module QF1 needs to control the shunt trip unit F and the undervoltage trip unit Q, requiring the energy storage motor M to provide power to these components and other internal functional circuits, ensuring their operation.

[0061] according to Figure 4 The diagram provided shows that the centralized PCS emergency stop system also includes a third relay KM2.

[0062] One end of the third relay KM2 is electrically connected to the output terminal of the first power supply VCC, and the other end of the third relay KM2 is electrically connected to one end of the energy storage motor M in the circuit breaker module QF1.

[0063] The operating state of the energy storage motor M in the circuit breaker module is controlled by the switching function of the third relay. When the third relay is on, the first power supply is connected to the energy storage motor M, ensuring its normal operation and providing normal power to the internal circuits of the circuit breaker module. When the third relay is off, the first power supply is disconnected from the energy storage motor M, stopping the power supply to the energy storage motor M, thereby controlling the circuit breaker module to disconnect from power.

[0064] The emergency stop system provided in this application controls the circuit breaker module to disconnect via an undervoltage release when the system experiences a power outage. It is not controlled by the system power supply, and the undervoltage release is only controlled by the primary power supply. Regardless of whether the system power supply is interrupted, the working state of the undervoltage release will not be affected. At the same time, the energy storage motor in the circuit breaker module stores energy to drive the normal operation of the circuit breaker module, ensuring the timely response of the emergency stop system.

[0065] Figure 5 This is a schematic diagram of yet another centralized PCS emergency stop system provided in the embodiments of this application. Figure 5 This is based on the previous embodiment. Figure 5 The provided diagram shows the specific structure of a centralized PCS emergency stop system, including: Emergency stop button SA1, power conversion module TF-2, first relay KA1, circuit breaker module QF1, undervoltage release Q-undervoltage, shunt trip release F-shunt, second relay KM1, energy storage motor M-energy storage, third relay KM2.

[0066] according to Figure 5 The provided diagram shows that the circuit breaker module QF1 in the centralized PCS emergency stop system also includes a closing button B.

[0067] One end of the closing button B is electrically connected to the output of the first power supply VCC as the fifth input terminal of the circuit breaker module QF1. The other end of the closing button B is electrically connected to the input of the first power supply VCC as the fifth output terminal of the circuit breaker module QF1. The closing button B is used to restart the circuit breaker module QF1 when it is in the open state.

[0068] The closing button B mentioned here can be understood as a control component with conducting capability, which can be a switch or other component with driving function.

[0069] The closing button B is installed in the circuit breaker module. In the event of a power outage, triggering the emergency stop button energizes the first relay coil via the power conversion module, causing the first contact switch on the first relay to open, thereby disconnecting the undervoltage release and achieving an emergency stop. After the fault is recovered, manually closing the closing button B restarts the system and restores circuit functionality.

[0070] according to Figure 5 The diagram provided shows that the centralized PCS emergency stop system also includes a fourth relay, KM3.

[0071] One end of the fourth relay KM3 is electrically connected to the output terminal of the first power supply VCC, and the other end of the fourth relay KM3 is electrically connected to the closing button B in the circuit breaker module QF1.

[0072] The closing button is connected to the primary power supply via a fourth relay, and the conduction status of the closing button is determined by the conduction status of the fourth relay. After manually closing the button, the fourth relay must be closed to ensure that the primary power supply powers the closing button, allowing the circuit breaker module to restart. If the closing button is manually closed but the fourth relay is open, the closing button cannot connect to the primary power supply, thus preventing effective power startup and hindering restart control. The fourth relay and the closing button work together to control the power recovery operation of the emergency stop system.

[0073] This application provides a centralized PCS emergency stop system. In the event of a power outage, the system controls the first contact switch of the first relay to open, thereby de-energizing the undervoltage release and achieving emergency stop control. At the same time, the circuit breaker module is equipped with devices such as a shunt trip unit, an energy storage motor, and a closing button to further improve the power outage recovery process and effectively enhance the operability and safety of the emergency stop system.

[0074] Figure 6 This is a schematic diagram of a centralized PCS emergency stop device provided in an embodiment of this application. According to... Figure 6 The provided diagram shows that the centralized PCS emergency stop device 1000 includes: a power management circuit (BMS) and, as shown in the diagram, a power management system (BMS) and, as shown in the diagram, a centralized PCS emergency stop device 1000. Figures 1-5 In any of the centralized PCS emergency stop systems 100 described above, the power management circuit BMS is electrically connected to the power conversion module TF-2 in the centralized PCS emergency stop system 100, and the power management circuit BMS is used to receive feedback signals from the power conversion module TF-2 in the centralized PCS emergency stop system 100.

[0075] The centralized PCS emergency stop device provided in this embodiment can be as follows: Figure 6 The centralized PCS emergency stop device 1000 shown can perform actions such as Figures 1-5 All functional modules in the centralized PCS emergency stop system 100 are used to achieve... Figures 1-5 For a detailed description of the control effect of the centralized PCS emergency stop system shown, please refer to [link / reference]. Figures 1-5 The corresponding explanation is concise and will not be elaborated upon here.

[0076] Figure 7 This is a structural schematic diagram of a centralized PCS emergency stop device provided in an embodiment of this application. According to... Figure 7 The provided diagram shows that the centralized PCS emergency stop device 2000 includes: a main unit 2000 and, as shown in the diagram, a host .... Figure 6 The centralized PCS emergency stop device 1000 is electrically connected to the host 2000 and is used to control the host to stop in case the host 2000 malfunctions or needs to be stopped.

[0077] The centralized PCS emergency stop device provided in this embodiment can be as follows: Figure 7 The centralized PCS emergency stop device 3000 shown can perform actions such as Figures 1-5 All functional modules in the centralized PCS emergency stop system 100 are used to achieve... Figure 6 For a detailed description of the technical effects of the centralized PCS emergency stop device shown, please refer to [link / reference needed]. Figure 6 The corresponding explanation is concise and will not be elaborated upon here.

[0078] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0079] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A centralized PCS emergency stop system, characterized in that, include: Emergency stop button, power conversion module, first switch, circuit breaker module, wherein the circuit breaker module includes an undervoltage release device; One end of the emergency stop button is electrically connected to the first input port of the power conversion module, and the other end of the emergency stop button is electrically connected to the second input port of the power conversion module. The first output port of the power conversion module is electrically connected to one end of the first switch, and the second output port of the power conversion module is electrically connected to one end of the first switch. The power conversion module is used to generate a control signal based on the state of the emergency stop button, and the control signal is used to control the conduction state of the first switch. One end of the first switch is electrically connected to the output terminal of the first power supply and the first input terminal of the circuit breaker module, and the other end of the first switch is electrically connected to one end of the undervoltage release corresponding to the second input terminal of the circuit breaker module. The first switch is used to change the conduction state of the first switch according to the control signal, and control the working state of the undervoltage release through the conduction state. The other end of the undervoltage release is electrically connected to the input terminal of the first power supply and the first output terminal of the circuit breaker module as the second output terminal of the circuit breaker module. The undervoltage release is used to initiate emergency stop control when the first switch is in the open state.

2. The centralized PCS emergency stop system according to claim 1, characterized in that, The first switch includes a first relay; One end of the coil in the first relay is electrically connected to the first output port of the power conversion module, and the other end of the coil in the first relay is electrically connected to the second output port of the power conversion module. One end of the first contact switch in the first relay is electrically connected to the output terminal of the first power supply and the first input terminal of the circuit breaker module, and the other end of the first contact switch in the first relay is electrically connected to one end of the undervoltage release in the second input terminal of the circuit breaker module. The first contact switch is used to be in the open state when the coil in the first relay is energized, so that the undervoltage release responds to the emergency stop control, and to control the first contact switch to be in the open state when the coil in the first relay is not energized. One end of the second contact switch in the first relay is electrically connected to one end of the power management circuit, and the other end of the second contact switch in the first relay is electrically connected to the other end of the power management circuit. The second contact switch is used to connect the power management circuit and the power conversion module so that the power management circuit can obtain the feedback signal from the power conversion module.

3. The centralized PCS emergency stop system according to claim 1, characterized in that, The circuit breaker module also includes a shunt trip unit; One end of the shunt trip unit serves as the third input terminal of the circuit breaker module, and the other end of the shunt trip unit serves as the third output terminal of the circuit breaker module. The shunt trip unit is used to initiate emergency stop control when the first power supply is operating normally. After the emergency stop signal of the emergency stop button is generated into a control signal by the power conversion module, the circuit where the shunt trip unit is located is disconnected to achieve emergency stop control.

4. The centralized PCS emergency stop system according to claim 3, characterized in that, The centralized PCS emergency stop system also includes a second relay; One end of the second relay is electrically connected to the output terminal of the first power supply, and the other end of the second relay is electrically connected to one end of the shunt trip unit in the circuit breaker module.

5. The centralized PCS emergency stop system according to claim 1, characterized in that, The circuit breaker module also includes an energy storage motor; One end of the energy storage motor is electrically connected to the output end of the first power supply as the fourth input end of the circuit breaker module, and the other end of the energy storage motor is electrically connected to the input end of the first power supply as the fourth output end of the circuit breaker module. The energy storage motor is used to provide energy storage signals to the circuit breaker module.

6. The centralized PCS emergency stop system according to claim 5, characterized in that, The centralized PCS emergency stop system also includes a third relay; One end of the third relay is electrically connected to the output end of the first power supply, and the other end of the third relay is electrically connected to one end of the energy storage motor in the circuit breaker module.

7. The centralized PCS emergency stop system according to claim 1, characterized in that, The circuit breaker module also includes a closing button; One end of the closing button is electrically connected to the output of the first power supply as the fifth input terminal of the circuit breaker module, and the other end of the closing button is electrically connected to the input of the first power supply as the fifth output terminal of the circuit breaker module. The closing button is used to restart the circuit breaker module when it is in the open state.

8. The centralized PCS emergency stop system according to claim 7, characterized in that, The centralized PCS emergency stop system also includes a fourth relay; One end of the fourth relay is electrically connected to the output terminal of the first power supply, and the other end of the fourth relay is electrically connected to one end of the closing button in the circuit breaker module.

9. A centralized PCS emergency stop device, characterized in that, The device includes: a power management circuit and a centralized PCS emergency stop system as described in any one of claims 1 to 8, wherein the power management circuit is electrically connected to the power conversion module in the centralized PCS emergency stop system, and the power management circuit is used to receive feedback signals from the power conversion module in the centralized PCS emergency stop system.

10. A centralized PCS emergency stop device, characterized in that, The device includes: a host computer and a centralized PCS emergency stop device as described in claim 9, wherein the host computer is electrically connected to the centralized PCS emergency stop device and is used to control the host computer to perform emergency stop when the host computer malfunctions or needs to be stopped.

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