Relay controller for energy storage power station

Abstract

The utility model relates to the field of energy storage power stations, and discloses a relay controller for an energy storage power station. According to the utility model, the relay controller comprises an MCU microcontroller, a first switch circuit, a second switch circuit, a first CAN transceiver, a second CAN transceiver, a voltage conversion circuit and a secondary power conversion circuit; the voltage conversion circuit is connected with the secondary power conversion circuit; the voltage conversion circuit is connected with the first CAN transceiver and the second CAN transceiver; the secondary power conversion circuit is connected with the MCU microcontroller; the first CAN transceiver and the second CAN transceiver are connected with the MCU microcontroller; and the first switching circuit and the second switching circuit are connected with the MCU microcontroller. Relay control of the fire alarm host and the solenoid valve in the energy storage power station is realized.

Description

Technical Field

[0001] The utility model relates to the field of energy storage power stations, in particular to a relay controller used in energy storage power stations. Background Art

[0002] As the country attaches more importance to green energy, more and more energy storage power stations are built and put into operation, and the fire safety of energy storage batteries is also receiving increasing attention. At present, fire alarms are generally used for early warning and control of the start of fire protection devices. However, the traditional fire alarm system has some shortcomings when facing the complex operating environment of energy storage batteries. For example, the existing fire alarm cannot obtain the data of each detection device in the energy storage battery group in a timely and effective manner, resulting in untimely warnings and affecting the overall effect of fire safety.

[0003] In energy storage power stations, the detection device in the battery pack is used to monitor the operating status of the battery, including parameters such as temperature and voltage. When the detection device detects an abnormal situation, it is necessary to transmit the data to the fire alarm device so that timely countermeasures can be taken. The traditional point-to-point transmission method is inefficient and unstable when the data volume is large and the transmission distance is long. Therefore, a reliable relay controller is needed to forward the data of the detection device in the battery pack to the fire alarm device and control the opening of the corresponding fire solenoid valve to improve the fire safety and response speed of the energy storage power station. Utility Model Content

[0004] The utility model aims to provide a relay controller for an energy storage power station, so that relay control of a fire alarm host and a solenoid valve in the energy storage power station can be realized.

[0005] In order to solve the above technical problems, an embodiment of the utility model provides a relay controller for an energy storage power station, comprising: an MCU microcontroller, a first switching circuit, a second switching circuit, a first CAN transceiver, a second CAN transceiver, a voltage conversion circuit, and a secondary power conversion circuit; the voltage conversion circuit is connected to the secondary power conversion circuit; the voltage conversion circuit is connected to the first CAN transceiver and the second CAN transceiver; the secondary power conversion circuit is connected to the MCU microcontroller; the first CAN transceiver and the second CAN transceiver are connected to the MCU microcontroller; the first switch circuit and the second switch circuit are connected to the MCU microcontroller.

[0006] Compared with the prior art, the implementation method of the utility model adopts a dual-channel CAN transceiver to realize bus communication between the fire alarm and the detector; performs corresponding driving through the first switch circuit and the second switch circuit; performs power management through the voltage conversion circuit and the secondary power conversion circuit; and performs corresponding relay control through the MCU microcontroller.

[0007] In addition, the first CAN transceiver is connected to the detector in the energy storage power station; the second CAN transceiver is connected to the fire alarm host in the energy storage power station. The data interaction between the detector and the fire alarm host in the energy storage power station is realized, and the reliable transmission of the detector data and the alarm host control signal is ensured through the separated data path.

[0008] In addition, the first CAN transceiver and the second CAN transceiver include an ESD protection unit, a high-frequency filter unit and a common-mode filter unit. The ESD protection unit prevents electrostatic discharge from damaging the CAN transceiver and improves the reliability of the system; the high-frequency filter unit can filter out high-frequency noise to ensure the integrity and stability of data transmission; the common-mode filter unit eliminates common-mode noise and improves the quality and anti-interference ability of communication signals.

[0009] In addition, the first switch circuit and the second switch circuit are relays. The relay can provide high current driving capability to ensure the reliable opening of the fire-fighting device (solenoid valve or electric explosion valve); the relay provides electrical isolation to protect the control circuit from current shock and interference of the load circuit. The safety and reliability of the system are improved to ensure the rapid response of the fire-fighting device in an emergency.

[0010] In addition, the first switch circuit and the second switch circuit are connected to the solenoid valve or electric explosion valve in the energy storage power station. Effective control of the solenoid valve or electric explosion valve in the energy storage power station is achieved, ensuring that the fire-fighting device can be quickly activated to extinguish the fire when a fire or other emergency is detected. The fire safety of the energy storage power station is improved and the emergency response capability of the system is ensured.

[0011] In addition, the voltage conversion circuit receives a 24V external power supply and outputs a 24V standard power supply. It provides a stable 24V standard power supply to ensure the normal operation of the relay controller and its various components; through voltage conversion, it adapts to different power input conditions to ensure the versatility and adaptability of the system. It improves the stability and reliability of the system and ensures the continuity of power supply.

[0012] In addition, the voltage conversion circuit includes: a power input protection module, which includes an anti-reverse unit, an overcurrent / overvoltage protection unit, a surge protection unit, and a type II filter unit; a short-circuit protection output module, which includes an overcurrent protection unit. The anti-reverse unit, the overcurrent / overvoltage protection unit, and the surge protection unit provide multiple protections to prevent equipment damage caused by power supply abnormalities; the type II filter unit filters out power supply noise, provides stable power output, and ensures reliable operation of the system. The short-circuit protection output module protects the equipment through the overcurrent protection unit in the event of a short circuit to prevent system failure and damage.

[0013] In addition, the relay controller also includes: MCU peripheral basic circuit, the MCU peripheral basic circuit is connected to the MCU microcontroller; the MCU peripheral basic circuit includes a power filter circuit, a clock circuit, a burning circuit and a reset circuit. The power filter circuit ensures that the MCU obtains a stable power supply to prevent power supply noise from affecting system operation; the clock circuit provides an accurate clock signal to ensure the normal operation of the MCU and the accuracy of data processing; the burning circuit provides a convenient programming interface to facilitate system program updates and debugging; the reset circuit resets the system when the voltage is abnormal to ensure the stable operation of the MCU and avoid system crashes.

[0014] In addition, the power filter circuit adopts a 0.1uF+1uF combination; the clock circuit adopts an 8MHZ frequency; the pins of the programming circuit include VDD, GND, CLK and SDA; the voltage detection of the reset circuit is 2.67V. The 0.1uF+1uF combination of the power filter circuit provides a better power filter effect to ensure the stability of power supply; the 8MHz clock circuit frequency provides a stable clock signal to ensure the accuracy and efficiency of MCU operation; the VDD, GND, CLK and SDA pin design of the programming circuit simplifies the programming and debugging process and enhances the maintainability of the system; the 2.67V voltage detection of the reset circuit ensures that the system is reset in time when the voltage is abnormal to avoid system errors caused by voltage fluctuations.

[0015] In addition, the model of the MCU microcontroller is STM32F105RBT6; the STM32F105RBT6 MCU has the characteristics of high performance and low power consumption, provides powerful processing capabilities and efficient power management; this model MCU integrates rich peripheral interfaces and functional modules, simplifies circuit design, and improves the overall performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 It is a structural schematic diagram of a relay controller for an energy storage power station of the utility model;

[0018] Figure 2 This is a structural block diagram of a fire alarm system for an energy storage power station of the utility model;

[0019] Figure 3 The utility model is a structural schematic diagram of an MCU microcontroller. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0021] The first embodiment of the utility model relates to a relay controller for an energy storage power station. Figure 1 As shown, it includes: an MCU microcontroller, a first switch circuit, a second switch circuit, a first CAN transceiver, a second CAN transceiver, a voltage conversion circuit, and a secondary power conversion circuit; the voltage conversion circuit is connected to the secondary power conversion circuit; the voltage conversion circuit is connected to the first CAN transceiver and the second CAN transceiver; the secondary power conversion circuit is connected to the MCU microcontroller; the first CAN transceiver and the second CAN transceiver are connected to the MCU microcontroller; the first switch circuit and the second switch circuit are connected to the MCU microcontroller.

[0022] The voltage conversion circuit is connected to the external power supply, and is used to convert the external power supply voltage into a voltage suitable for the operation of various parts of the relay controller, and is connected to the secondary power conversion circuit; the secondary power conversion circuit further converts the voltage from the voltage conversion circuit into a stable working voltage, and supplies it to the MCU microcontroller to ensure its normal operation; the first CAN transceiver and the second CAN transceiver are connected to the voltage conversion circuit to obtain the working voltage, and are respectively connected to the MCU microcontroller to realize data communication; the first switch circuit and the second switch circuit are connected to the MCU microcontroller, and are used to receive control signals from the MCU to control the fire-fighting devices (such as solenoid valves or electric explosion valves, etc.) in the energy storage power station.

[0023] The MCU microcontroller is the core control unit of the relay controller. The MCU microcontroller is responsible for processing and forwarding data and executing control commands. The MCU microcontroller communicates data with the detectors and the fire alarm host in the energy storage power station through the first CAN transceiver and the second CAN transceiver. The first switch circuit and the second switch circuit are mainly used to control the opening and closing of the solenoid valve or electric explosion valve in the energy storage power station. When the MCU microcontroller receives the valve opening instruction from the fire alarm host, the valve opening action is performed through the first switch circuit or the second switch circuit to ensure the rapid response of the fire protection system. The first CAN transceiver is connected to the detector in the energy storage power station to receive the data of the detection device and transmit the data to the MCU microcontroller for processing. The second CAN transceiver is connected to the fire alarm host in the energy storage power station to receive and send alarm signals, ensure that the detector data can be transmitted to the alarm host in time, and receive the control instructions of the alarm host. The voltage conversion circuit is responsible for converting the external power supply into a working voltage suitable for the internal circuit, and providing a more stable power supply through the secondary power conversion circuit. These power circuits ensure that the relay controller and its components work under stable voltage conditions, improving the reliability and safety of the system.

[0024] The first embodiment of the utility model realizes an efficient and stable relay control function through reasonable circuit design and component connection. By adopting an MCU microcontroller and a dual-channel CAN transceiver, the timely transmission of detector data and the rapid response of the fire alarm host are ensured. In addition, the voltage conversion circuit and the secondary power conversion circuit provide a stable operating voltage to ensure the stability and safety of the system. The application of the relay controller in the energy storage power station effectively improves the response speed and reliability of the fire protection system, and has strong practical value and broad application prospects.

[0025] The second embodiment of the utility model relates to a relay controller for an energy storage power station. The second embodiment is substantially the same as the first embodiment, with the main difference being:

[0026] like Figure 2 As shown, the relay controller is applied to the fire alarm system in the energy storage power station, which includes a fire alarm host, a relay controller, a solenoid valve (or electric explosion valve) and a detector. The detector is set in the battery pack in the energy storage power station to detect the status data of the battery pack; the relay controller is responsible for collecting the detector data and forwarding it to the fire alarm host, and controlling the switch of the solenoid valve or electric explosion valve according to the control signal of the fire alarm host; the fire alarm host is used to receive the battery pack status data forwarded by the relay controller, and send out an alarm signal and control instructions when an abnormality is detected; the solenoid valve performs an opening action to fire after receiving the execution instruction of the relay controller.

[0027] The first CAN transceiver is connected to the detector in the energy storage power station; the second CAN transceiver is connected to the fire alarm host in the energy storage power station. The relay controller is connected to the detector CANH / CANL, and the relay controller is connected to the fire alarm host CANH / CANL. The bus communication between the detector and the fire alarm host is realized through the relay controller, which realizes the efficient collection and forwarding of the battery pack status data in the energy storage power station. Through the core control of the MCU microcontroller, the timely processing of data and the rapid response of the fire protection system are ensured, which improves the fire safety of the energy storage power station and the reliability of the system.

[0028] The first CAN transceiver and the second CAN transceiver include an ESD protection unit, a high-frequency filtering unit and a common-mode filtering unit. The connection between the first CAN transceiver and the second CAN transceiver and the MCU microcontroller is CANTX, CANRX and CANSTB connection. The ESD protection unit prevents electrostatic discharge from damaging the CAN transceiver and improves the reliability of the system; the high-frequency filtering unit can filter out high-frequency noise to ensure the integrity and stability of data transmission; the common-mode filtering unit eliminates common-mode noise and improves the quality and anti-interference ability of the communication signal.

[0029] The first switch circuit and the second switch circuit are relays. The first switch circuit and the second switch circuit are connected to the MCU microcontroller via GPIO. The relay can provide high current driving capability to ensure reliable opening of the fire-fighting device (solenoid valve or electric explosion valve). The relay provides electrical isolation to protect the control circuit from current shock and interference of the load circuit. The safety and reliability of the system are improved to ensure rapid response of the fire-fighting device in an emergency.

[0030] The first switch circuit and the second switch circuit are connected to the solenoid valve or electric explosion valve in the energy storage power station. Effective control of the solenoid valve or electric explosion valve in the energy storage power station is achieved, ensuring that the fire-fighting device can be quickly activated to extinguish the fire when a fire or other emergency is detected. The fire safety of the energy storage power station is improved and the emergency response capability of the system is ensured.

[0031] The voltage conversion circuit (DC / DC) receives a 24V external power supply and outputs a 24V standard power supply. It provides a stable 24V standard power supply to ensure the normal operation of the relay controller and its components; through voltage conversion, it adapts to different power input conditions to ensure the versatility and adaptability of the system. It improves the stability and reliability of the system and ensures the continuity of power supply.

[0032] The voltage conversion circuit (DC / DC) includes: a power input protection module, which includes an anti-reverse unit, an overcurrent / overvoltage protection unit, a surge protection unit, and a type II filter unit; a short-circuit protection output module, which includes an overcurrent protection unit. The anti-reverse unit, the overcurrent / overvoltage protection unit, and the surge protection unit provide multiple protections to prevent equipment damage caused by power supply abnormalities; the type II filter unit filters out power supply noise, provides stable power output, and ensures reliable operation of the system. The short-circuit protection output module protects the equipment through the overcurrent protection unit in the event of a short circuit to prevent system failure and damage.

[0033] like Figure 3 As shown, the relay controller also includes: an MCU peripheral basic circuit, which is connected to the MCU microcontroller; the MCU peripheral basic circuit includes a power filter circuit, a clock circuit, a burning circuit and a reset circuit. The power filter circuit ensures that the MCU obtains a stable power supply to prevent power supply noise from affecting system operation; the clock circuit provides an accurate clock signal to ensure the normal operation of the MCU and the accuracy of data processing; the burning circuit provides a convenient programming interface to facilitate system program updates and debugging; the reset circuit resets the system when the voltage is abnormal to ensure the stable operation of the MCU and avoid system crashes.

[0034] The power filter circuit uses a 0.1uF+1uF combination; the clock circuit uses an 8MHZ frequency; the pins of the programming circuit include VDD, GND, CLK and SDA; the voltage detection of the reset circuit is 2.67V. The 0.1uF+1uF combination of the power filter circuit provides a better power filter effect to ensure the stability of power supply; the 8MHz clock circuit frequency provides a stable clock signal to ensure the accuracy and efficiency of MCU operation; the VDD, GND, CLK and SDA pin design of the programming circuit simplifies the programming and debugging process and enhances the maintainability of the system; the 2.67V voltage detection of the reset circuit ensures that the system is reset in time when the voltage is abnormal to avoid system errors caused by voltage fluctuations.

[0035] The MCU model is STM32F105RBT6, which supports dual-channel CAN, one of which exchanges data with the detectors in the battery pack, supporting up to 64 detectors, and the other communicates data with the fire alarm host. The data communication baud rate can be set according to different customer requirements. The STM32F105RBT6 MCU has high performance and low power consumption, providing powerful processing capabilities and efficient power management; this model MCU integrates a wealth of peripheral interfaces and functional modules, simplifies circuit design, and improves the overall performance of the system.

[0036] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A relay controller for an energy storage power station, characterized in that: The relay controller comprises: MCU microcontroller, a first switch circuit, a second switch circuit, a first CAN transceiver, a second CAN transceiver, a voltage conversion circuit, and a secondary power conversion circuit; The voltage conversion circuit is connected to the secondary power conversion circuit; the voltage conversion circuit is connected to the first CAN transceiver and the second CAN transceiver; the secondary power conversion circuit is connected to the MCU microcontroller; the first CAN transceiver and the second CAN transceiver are connected to the MCU microcontroller; the first switch circuit and the second switch circuit are connected to the MCU microcontroller.

2. The relay controller according to claim 1, characterized in that: The first CAN transceiver is connected to the detector in the energy storage power station; the second CAN transceiver is connected to the fire alarm host in the energy storage power station.

3. The relay controller according to claim 2, characterized in that: The first CAN transceiver and the second CAN transceiver include an ESD protection unit, a high frequency filtering unit and a common mode filtering unit.

4. The relay controller according to claim 1, characterized in that: The first switch circuit and the second switch circuit are relays.

5. The relay controller according to claim 4, characterized in that: The first switch circuit and the second switch circuit are connected to a solenoid valve or an electric explosion valve in the energy storage power station.

6. The relay controller according to claim 1, characterized in that: The voltage conversion circuit receives a 24V external power supply and outputs a 24V standard power supply.

7. The relay controller according to any one of claims 1 to 6, characterized in that: The voltage conversion circuit comprises: A power input protection module, the power input protection module comprising an anti-reverse unit, an overcurrent / overvoltage protection unit, a surge protection unit, and a type II filter unit; A short circuit protection output module, wherein the short circuit protection output module comprises an overcurrent protection unit.

8. The relay controller according to any one of claims 1 to 6, characterized in that: The relay controller also includes: The MCU peripheral basic circuit is connected to the MCU microcontroller; the MCU peripheral basic circuit includes a power supply filter circuit, a clock circuit, a burning circuit and a reset circuit.

9. The relay controller according to claim 8, characterized in that: The power supply filter circuit adopts a 0.1uF+1uF combination; the clock circuit adopts an 8MHZ frequency; the pins of the programming circuit include VDD, GND, CLK and SDA; the voltage detection of the reset circuit is 2.67V.

10. The relay controller according to claim 9, characterized in that: The model of the MCU microcontroller is STM32F105RBT6.

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