Device for controlling air conditioner and energy storage system

Abstract

The utility model relates to the technical field of energy storage. The utility model discloses a device for controlling an air conditioner and an energy storage system. The device comprises a master control unit, a master control unit and a slave control unit, the master control unit and the slave control unit are respectively in communication connection with the master control unit; the slave control unit is used for collecting the temperature of a battery pack of the target air conditioner; the master control unit is used for sending the temperature, received by the slave control unit, of the battery pack of the target air conditioner to the master control unit; and the general control unit is used for generating an instruction corresponding to the target mode when it is determined that the target air conditioner needs to be controlled to be in the target mode according to the temperature of the battery pack of the target air conditioner.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, specifically to a device for controlling air conditioning and an energy storage system. Background Technology

[0002] With increasing global emphasis on clean energy and sustainable development, energy storage systems, as a new type of recyclable and renewable clean energy, are being increasingly widely used in power, transportation, and industrial sectors. Energy storage systems not only improve energy efficiency and reduce energy consumption, but also buffer power loads during peak hours, assist in grid connection of renewable energy sources, and provide backup power in critical facilities. However, as the size and scale of energy storage containers continue to increase, the management and industrial control of the various components within the energy storage system become particularly important, especially the effective management and control of large numbers of air conditioning units, which has become a pressing issue.

[0003] Currently, most energy storage systems on the market use an Energy Management System (EMS) or Battery Array Unit (BAU) as the core control device to manage all air conditioning equipment. This approach performs well in small-volume energy storage systems, effectively monitoring and controlling the equipment. However, as the size of energy storage containers increases, this approach is gradually revealing some problems.

[0004] Specifically, due to the large number and wide distribution of air conditioning equipment inside energy storage containers, if all of them are controlled through the Modbus-RS485 mounted under the EMS or BAU, broadcasting issues are likely to occur. Utility Model Content

[0005] In view of this, the present invention provides a device for controlling air conditioning and an energy storage system to solve the problem that there are a large number of air conditioning devices inside the energy storage container, which are widely distributed. If all of them are controlled through the Modbus-RS485 mounted under the EMS or BAU, broadcasting problems are likely to occur.

[0006] In a first aspect, this utility model provides a device for controlling an air conditioner, the device comprising: a central control unit, a master control unit, and a slave control unit; the central control unit and the slave control unit are communicatively connected to the master control unit; the slave control unit is used to collect the temperature of the battery pack of the target air conditioner; the master control unit is used to send the temperature of the battery pack of the target air conditioner received from the slave control unit to the central control unit; the central control unit is used to generate an instruction corresponding to the target mode when it is determined, based on the temperature of the battery pack of the target air conditioner, that the target air conditioner needs to be controlled to be in a target mode, and send the instruction to the master control unit so that the master control unit controls the target air conditioner to enter the target mode according to the instruction.

[0007] In one alternative implementation, the device for controlling the air conditioner further includes: a switch and a server; the server and the central control unit are communicatively connected to the switch.

[0008] In one optional implementation, there are multiple slave control units; wherein any two adjacent slave control units are communicatively connected, and a target slave control unit is communicatively connected to the master control unit.

[0009] In one optional implementation, there are multiple air conditioners and multiple main control units, with the number of main control units being the same as the number of air conditioners; each of the multiple air conditioners is communicatively connected to a different main control unit; and the multiple main control units are communicatively connected to a central control unit.

[0010] In one alternative implementation, the main control unit is communicatively connected to the central control unit via a controller area network bus; the main control unit is communicatively connected to the air conditioner via a single host communication interface.

[0011] In one optional implementation, the target slave unit among the multiple slave control units is communicatively connected to the master control unit via a serial peripheral interface, and any two adjacent other slave control units are communicatively connected via a serial peripheral interface. The other slave control units are the slave control units other than the target slave control unit among the multiple slave control units.

[0012] In one alternative implementation, the server includes a cloud server or a manufacturing execution system.

[0013] Secondly, this utility model provides an energy storage system, including: an air conditioner, a battery pack, an energy storage container, a central control combiner cabinet, and the aforementioned device for controlling the air conditioner; a door is provided on the side wall of the energy storage container; the air conditioner is connected to the door of the energy storage container and communicatively connected to the main control unit; the battery pack and the central control combiner cabinet are respectively disposed inside the energy storage container; the central control combiner cabinet is connected to the battery pack and is used to supply power to the battery pack.

[0014] In one alternative embodiment, the energy storage container includes at least one receiving cavity; a fire-fighting device is installed inside the receiving cavity.

[0015] In one optional implementation, the number of battery packs is multiple, and the multiple battery packs are divided into multiple groups; the energy storage system also includes: multiple high-voltage boxes; each high-voltage box is connected to a different group of battery packs.

[0016] The air conditioner control device provided by this utility model has a slave control unit responsible for collecting the temperature of the battery pack and reporting the temperature of the battery pack to the master control unit through a small number of intermediate layers (master control unit). The master control unit then determines the target mode based on the temperature of the battery pack, generates the instruction corresponding to the target mode, and sends the instruction to the master control unit, so that the master control unit controls the target air conditioner to enter the target mode. This reduces the need to broadcast a large amount of data directly on the communication line, thereby reducing the risk of signal reflection and superposition caused by multiple devices sending data at the same time. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a modular schematic diagram of a device for controlling an air conditioner according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the control flow of an air conditioner control device according to an embodiment of the present utility model;

[0020] Figure 3 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present utility model;

[0021] Figure 4 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present utility model;

[0022] Figure 5 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present utility model;

[0023] Figure 6 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present utility model;

[0024] Figure 7 This is a modular schematic diagram of an energy storage system according to an embodiment of the present utility model;

[0025] Figure 8 This is a modular schematic diagram of another energy storage system according to an embodiment of the present utility model;

[0026] Figure 9 This is a modular schematic diagram of another energy storage system according to an embodiment of the present utility model;

[0027] Figure 10This is a modular schematic diagram of another energy storage system according to an embodiment of the present utility model;

[0028] Figure 11 This is a communication topology diagram of another energy storage system according to an embodiment of the present utility model. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] According to an embodiment of the present invention, a device for controlling an air conditioner is provided; Figure 1 This is a modular schematic diagram of a device for controlling an air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, the device for controlling the air conditioner includes: a central control unit 100, a master control unit 200, and a slave control unit 300; the central control unit 100 and the slave control unit 300 are communicatively connected to the master control unit 200; the slave control unit 300 is used to collect the temperature of the target air conditioner's battery pack; the master control unit 200 is used to send the temperature of the target air conditioner's battery pack received from the slave control unit 300 to the central control unit 100; the central control unit 100 is used to generate an instruction corresponding to the target mode when it is determined, based on the temperature of the target air conditioner's battery pack, that the target air conditioner needs to be controlled to be in the target mode, and send the instruction to the master control unit 200, so that the master control unit 200 controls the target air conditioner to enter the target mode according to the instruction.

[0031] In this invention, the central control unit 100 can be a battery array unit (BAU) of the battery management system. Specifically, the central control unit 100 is the core management unit of the entire air conditioning control device. The main control unit 200 can be a battery control unit (BCU) of the battery management system. Specifically, the central control unit 100 is responsible for overall logical judgment and decision-making, that is, receiving the temperature of the battery pack collected from the main control unit 200 and determining whether to adjust the air conditioning's operating mode based on the temperature.

[0032] The main control unit 200 serves as the data exchange and communication hub for the entire air conditioning control device. The main control unit 200 communicates with both the central control unit 100 and the slave control unit 300. It can receive battery pack temperature data of the target air conditioner collected by the slave control unit and forward it to the central control unit 100. Furthermore, it can control the target air conditioner to enter the target mode according to instructions from the central control unit 100.

[0033] The slave control unit 300 can be a battery management unit (BMU). Specifically, the slave control unit 300 can collect the temperature of the battery packs within a specific area (such as within a single energy storage container 1100). Each slave control unit 300 can be connected to different battery packs, and each slave control unit 300 can collect the temperature of the battery packs connected to it, and then send the temperatures of all battery packs to the master control unit 200.

[0034] The control steps for the air conditioning control device are as follows:

[0035] The slave control unit 300 periodically or in real time collects the temperature of the battery pack in the area where the target air conditioner is located. The slave control unit 300 then uploads the collected battery pack temperature to the master control unit 200.

[0036] The main control unit 200 forwards the received temperature to the central control unit 100.

[0037] The central control unit 100 determines whether the operating mode of the air conditioner 900 needs to be adjusted based on preset temperature thresholds (such as 15℃, 16℃, etc.). If the target air conditioner's operating mode needs to be adjusted, the central control unit 100 generates a corresponding control command. The central control unit 100 sends the command to its main control unit. Based on the received control command, the main control unit directly controls the target air conditioner to enter the target mode. The target mode can be something like turning on the air conditioner for cooling or adjusting the fan speed; it is not specifically limited here and can be determined by the temperature of the target air conditioner's battery pack.

[0038] Figure 2 This is a schematic diagram of the control flow of the air conditioner control device according to an embodiment of the present invention, combined with... Figure 2 As shown, in one application scenario, the control steps of the device controlling the air conditioner are as follows:

[0039] The slave control unit 300 collects the temperature of the battery pack and then sends the temperature of the battery pack to the master control unit 100 through the master control unit 200.

[0040] The main control unit 100 can obtain the temperature of the battery pack; when the temperature of the battery pack is 15℃≤25℃, the air conditioner 900 maintains the initial mode; the initial mode can be the battery pack being in the off mode.

[0041] When the battery pack temperature is between 15℃ and 25℃, the temperature difference of the battery pack can be further determined, that is, the difference between the maximum temperature and the minimum temperature of the battery pack. When the temperature difference of the battery pack is less than 5℃, the air conditioner 900 continues to maintain its initial state. When the temperature difference of the battery pack is greater than 5℃, the main control unit 100 can issue a command to adjust the air conditioner 900 to the air conditioning fan mode, and then the main control unit 200 controls the air conditioner 900 to turn on the air conditioning fan mode according to the command.

[0042] Preferably, after the air conditioner is turned on in air-blowing mode, the slave control unit 300 continues to collect the temperature of the battery pack, and the main control unit 100 monitors the temperature difference of the battery pack until the temperature difference of the battery pack is less than 5°C. At this point, the slave control unit 300 controls the air conditioner to switch from air-blowing mode back to the initial mode. When the temperature of the battery pack is greater than 25°C, the main control unit 100 can issue a command to switch the air conditioner to cooling mode, and then the master control unit 200 controls the air conditioner to turn on the cooling mode according to the command.

[0043] Preferably, after the air conditioner turns on the air conditioning cooling mode, the slave control unit 300 can continue to collect the temperature of the battery pack, and the main control unit 100 can monitor the temperature of the battery pack and the temperature difference of the battery pack until the battery pack temperature is 15℃≤25℃ and the temperature difference of the battery pack is <5℃. Then, the main control unit 200 controls the air conditioner to switch from the air conditioning cooling mode to the initial mode.

[0044] When the battery pack temperature is <15℃, the main control unit 100 can issue a command to adjust the air conditioner to the air conditioner heating mode, and then the main control unit 200 controls the air conditioner to turn on the air conditioner heating mode according to the command.

[0045] Preferably, after the air conditioner turns on the heating mode, the slave control unit 300 can continue to collect the temperature of the battery pack, and the main control unit 100 can monitor the temperature of the battery pack and the temperature difference of the battery pack until the battery pack temperature is 15℃≤25℃ and the temperature difference of the battery pack is <5℃. Then, the main control unit 200 controls the air conditioner to switch from the heating mode to the initial mode.

[0046] It should be noted that the temperatures of the battery packs mentioned above, namely 15℃ and 25℃, and the temperature difference of 5℃, are only temperature limits for the above application scenarios. That is, the temperature and temperature difference of the battery packs can also be other temperatures, and no specific limitation is made here.

[0047] The air conditioner control device provided by this utility model has a slave control unit responsible for collecting the temperature of the battery pack and reporting the temperature of the battery pack to the master control unit through a small number of intermediate layers (master control unit). The master control unit then determines the target mode based on the temperature of the battery pack, generates the instruction corresponding to the target mode, and sends the instruction to the master control unit, so that the master control unit controls the target air conditioner to enter the target mode. This reduces the need to broadcast a large amount of data directly on the communication line, thereby reducing the risk of signal reflection and superposition caused by multiple devices sending data at the same time.

[0048] In one optional implementation, Figure 3 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present invention, as shown below. Figure 3 As shown, the device for controlling the air conditioner also includes: a switch 400 and a server 500; the server 500 and the main control unit 100 are communicatively connected to the switch 400.

[0049] In this embodiment, the switch 400 can be a network connection device that connects the central control unit 100 and the server 500. The switch 400 enables communication between the central control unit 100 and the server 500 by forwarding temperature data packets, allowing the central control unit 100 and the server 500 to exchange information.

[0050] Server 500 is the data processing and control center for the air conditioning control device. Server 500 communicates with the central control unit 100 through switch 400, receiving and storing data from the central control unit 100 (such as the temperature of battery pack 1000, the operating mode of air conditioner 900, etc.).

[0051] Preferably, the server 500 can also send control commands to the central control unit 100 to adjust the operating mode of the air conditioner 900. Furthermore, the server 500 can provide a remote access interface, allowing maintenance personnel or users to remotely monitor the battery pack temperature and the air conditioner's operating mode, as well as perform fault diagnosis and remote control.

[0052] Preferably, communication between the switch 400 and the server 500, and between the switch 400 and the central control unit 100, can be via optical fiber or Ethernet communication (e.g., ProFinet communication), without specific limitations. Optical fiber communication utilizes light waves as the information carrier and optical fiber as the transmission medium. At the transmitting end, the information to be transmitted (e.g., the temperature of the battery pack) is converted into an optical signal and transmitted through the optical fiber to the receiving end, where the receiving end reconstructs the original information (e.g., the temperature of the battery pack).

[0053] Preferably, the server 500 can be a cloud server or a manufacturing execution system. A cloud server, also known as a cloud server or Elastic Compute Service (ECS), is a server based on cloud computing technology. It provides users with resources such as computing, storage, and networking. Users can flexibly select and use these resources according to their needs to implement various applications and services. A manufacturing execution system is a software system used to manage and monitor the manufacturing process. The manufacturing execution system uses technologies such as the Internet of Things (IoT) and sensors to monitor the temperature of the battery pack in real time.

[0054] The air conditioning control device provided by this utility model uses a switch as the central point of network connection, which allows for easy addition or removal of network devices without reconfiguring the entire air conditioning control device. It can be flexibly expanded to adapt to future possible increases in equipment or functional requirements.

[0055] In addition, the server, as the control center, can centrally manage multiple master control units and related air conditioners, simplifying the management process, reducing management costs, and improving management efficiency.

[0056] Figure 4 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present utility model, combined with... Figure 4 As shown, in an optional embodiment, there are multiple slave control units 300; wherein, any two adjacent slave control units 300 are communicatively connected, and a target slave control unit among the multiple slave control units 300 is communicatively connected to the master control unit 200.

[0057] In this embodiment, the number of slave control units 300 can be two, three, etc., and is not specifically limited. Among the multiple slave control units 300, one specific slave control unit 300 (or "master-slave control unit") can be directly connected to the master control unit 200, while the remaining slave control units 300 are interconnected in a chain-like manner. This allows the master control unit 200 to directly control and manage the master and slave control units 300. The chain-like connection allows the master and slave control units 300 to transmit instructions or data from the master control unit 200 to other slave control units 300 and collect feedback on the battery pack temperature from them to the master control unit 200. This structure ensures centralized control of the system by the master control unit 200 while also enabling information sharing and collaborative work among the slave control units 300. Using the chain-like structure, the battery pack temperature starts from one end, passes through each slave control unit 300 sequentially, and continues to the other end.

[0058] Preferably, the remaining slave control units 300 are interconnected in a ring configuration, enabling the master control unit 200 to directly control and manage the master and slave control units 300. This ring configuration allows the battery pack temperature to circulate along the loop until it reaches the slave control unit 300, which is directly connected to the master control unit 200.

[0059] It should be noted that each slave control unit 300 can be communicatively connected to different battery packs. That is, each slave control unit 300 can collect the temperature of a battery pack and then send the temperature of the battery pack to the master control unit 200 through a chain structure or a ring structure.

[0060] As can be seen from the above, the temperature difference of the battery pack is the difference between the maximum temperature and the minimum temperature of the battery pack; where the maximum temperature and the minimum temperature of the battery pack refer to the temperatures of two different battery packs.

[0061] The air conditioning control device provided in this embodiment has each slave control unit responsible for collecting the temperature of its corresponding battery pack. This distributed data collection significantly reduces data transmission latency and improves data acquisition efficiency. Furthermore, before transmitting data to the master control unit, the slave control units can perform data aggregation and processing to reduce the amount of data that needs to be transmitted, further improving communication efficiency.

[0062] Figure 5 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present utility model, combined with... Figure 5 As shown, there are multiple air conditioners and multiple main control units 200, with the number of main control units 200 being the same as the number of air conditioners; each air conditioner is communicatively connected to a different main control unit 200; and each of the multiple main control units 200 is communicatively connected to the central control unit 100.

[0063] In this embodiment, each air conditioner is individually connected to a different main control unit 200. There is a one-to-one correspondence between the air conditioner and the main control unit 200; the air conditioner does not require individual address settings, only the BCU's address needs to be set. All main control units 200 are further connected to a central control unit 100. The central control unit 100 can send commands to all the main control units 200 in a unified manner.

[0064] The air conditioning control device provided in this embodiment connects multiple air conditioners to a corresponding number of main control units one-to-one, and the system design, which centrally manages them through a main control unit, can improve system efficiency and reliability.

[0065] Figure 6 This is a modular schematic diagram of another air conditioning control device according to an embodiment of the present utility model, combined with... Figure 6As shown, in an optional implementation, the main control unit 200 is communicatively connected to the central control unit 100 via the controller local area network bus 700; the main control unit 200 is communicatively connected to the air conditioner via a single host communication interface.

[0066] The Controller Area Network (CAN) bus 700 is a widely used industrial communication protocol that supports multi-master communication, allowing multiple devices to send data simultaneously and effectively avoiding communication conflicts. Specifically, the slave control unit 300 communicates with the central control unit 100 through the CAN bus 700, enabling the central control unit 100 to obtain the temperature of the battery pack 1000 of each slave control unit 300 in real time, thus achieving centralized monitoring and management of the air conditioning control device.

[0067] The single-master communication interface can be a standard RS485 interface (Modbus-RS485 interface) for serial communication buses, suitable for communication between master and slave devices. The master device controls the communication process, while the slave device sends or receives data according to the master device's instructions. Specifically, the master control unit 200 communicates with the air conditioner through the single-master communication interface, enabling the master control unit 200 to directly control the air conditioner to enter the target mode.

[0068] The air conditioner control device provided in this embodiment ensures efficient and reliable data transmission within the system through the combined use of a controller local area network (Controller Area Network) bus and a single-host communication interface. The Controller Area Network bus is responsible for communication with the central control unit, while the single-host communication interface is responsible for communication between the main control unit and the air conditioner. Each component performs its specific function without interfering with the other.

[0069] In one optional implementation, combined with Figure 6 As shown, the target slave unit among the multiple slave control units 300 is communicatively connected to the master control unit 200 through the serial peripheral interface 800. Any two adjacent other slave control units 300 are communicatively connected through the serial peripheral interface 800. The other slave control units 300 are the slave control units 300 other than the target slave control unit among the multiple slave control units 300.

[0070] Among the multiple slave control units 300, one slave control unit 300 is communicatively connected to the master control unit 200 through a serial peripheral interface 800, and the remaining slave control units 300 are communicatively connected to each other through the serial peripheral interface 800.

[0071] The Serial Peripheral Interface (SPI) 800 is a high-speed, full-duplex, synchronous communication bus that enables bidirectional transmission between slave units 300 and between slave units 300 and master units 200, supporting simultaneous sending and receiving of data.

[0072] Figure 7 This is a modular schematic diagram of an energy storage system according to an embodiment of the present utility model. Figure 8 This is a modular schematic diagram of another energy storage system according to an embodiment of the present utility model. (In conjunction with...) Figure 7 and Figure 8 As shown, this utility model provides an energy storage system, which includes an air conditioner 900, a battery pack 1000, an energy storage container 1100, a central control combiner cabinet 1200, and a device for controlling the air conditioner. A door 1300 is provided on the side wall of the energy storage container 1100. The air conditioner 900 is connected to the door 1300 of the energy storage container 1100 and communicatively connected to the main control unit. The battery pack 1000 and the central control combiner cabinet 1200 are respectively disposed inside the energy storage container 1100. The central control combiner cabinet 1200 is connected to the battery pack 1000 and is used to supply power to the battery pack 1000.

[0073] The energy storage container 1100 can serve as a protective shell for the battery pack 1000, the central control combiner cabinet 1200, and the air conditioning control device, all of which are installed inside the energy storage container 1100.

[0074] Specifically, the energy storage container 1100 is provided with a door 1300 on its side wall, and an air conditioner 900 is installed on the door 1300 of the energy storage container 1100. The air conditioner 900 can adjust the temperature of the battery pack 1000 inside the energy storage container 1100.

[0075] The battery pack 1000 is the core component of the energy storage system, responsible for storing electrical energy. The battery pack 1000 is typically composed of multiple individual battery cells (such as lithium-ion batteries, lead-acid batteries, etc.) connected in series or parallel. Specifically, in this embodiment, the battery pack 1000 is installed inside the energy storage container 1100 and can supply power to the air conditioner 900.

[0076] The central control combiner cabinet 1200 is responsible for power supply management and other functions of the battery pack 1000. By connecting to the battery pack 1000, the central control combiner cabinet 1200 can control the charging and discharging of the battery pack 1000, ensuring that the battery pack 1000 operates in optimal condition.

[0077] Preferably, the central control junction box 1200 may also integrate a protection circuit to prevent abnormal situations such as battery overcharging, over-discharging, and short circuits.

[0078] Preferably, there can be multiple doors 1300 provided on the side wall of the container, and the doors 1300 can be outward-opening doors to facilitate professional personnel to enter the interior of the containerized energy storage device.

[0079] The energy storage system provided in this embodiment integrates safety monitoring functions in its central control combiner cabinet. It can monitor the battery pack's operating status in real time, including parameters such as voltage, current, and temperature. If any abnormality is detected, protective measures are immediately taken to prevent accidents. Furthermore, the air conditioning control device can automatically adjust the cooling or heating power according to the temperature of the battery pack inside the energy storage container 1100, ensuring that the battery pack operates within a suitable operating temperature range.

[0080] Figure 9 This is a modular schematic diagram of another energy storage system according to an embodiment of the present utility model. (Combined with...) Figure 8 As shown, in an optional embodiment, the energy storage system further includes a fire-fighting device 1400. The energy storage container 1100 includes at least one receiving cavity; the fire-fighting device 1400 is installed within the receiving cavity.

[0081] The fire-fighting device 1400 can be a fire sprinkler, a fire extinguisher, etc., without specific limitations.

[0082] When the fire-fighting device 1400 is a fire sprinkler, a receiving cavity can be provided on the top wall of the energy storage container 1100, and the fire-fighting device 1400 is installed inside the receiving cavity. Spraying can be activated when there is a hazard (such as a fire). When the fire-fighting device 1400 is a fire extinguisher, a receiving cavity can be provided on the side wall of the energy storage container 1100, and the fire-fighting device 1400 is installed inside the receiving cavity. When the fire-fighting device 1400 is both a fire extinguisher and a fire sprinkler, a receiving cavity can be provided on both the top wall and the side wall of the energy storage container 1100.

[0083] The energy storage system provided in this embodiment has a fire-fighting device that can monitor parameters such as temperature and smoke inside the energy storage container 1100 in real time. Once an abnormality is detected, such as a sharp rise in temperature or excessive smoke concentration, the alarm and fire-fighting procedures can be quickly activated to effectively curb the initial spread of the fire.

[0084] Figure 10 This is a modular schematic diagram of another energy storage system according to an embodiment of the present utility model. (In conjunction with...) Figure 9 As shown, there are multiple sets of battery packs 1000; the energy storage system also includes multiple high-voltage boxes 1500; each high-voltage box 1500 is connected to different sets of battery packs 1000.

[0085] When there are multiple sets of battery packs 1000, in order to manage and distribute the power of these battery packs 1000 more effectively, each high-voltage box 1500 is connected to different sets of battery packs 1000. The high-voltage box 1500 can be installed inside the energy storage container 1100.

[0086] Figure 11 This is a communication topology diagram of an energy storage system according to an embodiment of the present invention. Combined with... Figure 11As shown, there are multiple master control units 100. One master control unit 100 can be used as the main master control unit, and the other master control units 100 can be used as secondary master control units. All master control units 100 are communicatively connected to the switch 400. The switch 400 can be communicatively connected to the server 600 via a reserved optical fiber or Ethernet. It can also be communicatively connected to the optical fiber ring network (not shown in the figure) via a reserved optical fiber. The switch 400 can also be communicatively connected to an industrial-grade 4G router (not shown in the figure), such as the Dandelion R300A, via Ethernet. The industrial-grade 4G router can be communicatively connected to the 4G cloud platform via the 4G network segment.

[0087] The central control unit 100 and the main control unit 200 are communicatively connected via a controller area network bus 700. The slave control unit 300 and the main control unit 200 are communicatively connected via a serial peripheral interface 800. The air conditioner 900 and the main control unit 200 are communicatively connected via a single-host communication interface 1800. The slave control unit 300 is used to collect the temperature of the target air conditioner's battery pack 1000. The main control unit 200 is used to send the temperature of the target air conditioner's battery pack 1000 received from the slave control unit 300 to the central control unit 100. When the central control unit 100 determines that the target air conditioner needs to be controlled to enter the target mode based on the temperature of the target air conditioner's battery pack 1000, it generates an instruction corresponding to the target mode and sends the instruction to the main control unit 200, so that the main control unit 200 controls the target air conditioner to enter the target mode according to the instruction.

[0088] The fire protection module can be a station-level fire protection system. Station-level fire protection refers to fire protection facilities or systems installed at a site or area where the electrical system is located to address potential fires and other emergencies. Specific components may include fire alarm systems, automatic sprinkler systems, gas extinguishing systems, and fire hydrant systems, designed to promptly detect and control fires and ensure the safety of personnel and property.

[0089] The sub-control unit can communicate with the process control system 1600 (PCS) and can also communicate with the human machine interface 1700 (HMI).

[0090] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A device for controlling an air conditioner, characterized in that, The device includes: a central control unit, a master control unit, and a slave control unit; the central control unit and the slave control unit are respectively communicatively connected to the master control unit; The slave control unit is used to collect the temperature of the target air conditioner's battery pack; The main control unit is used to send the temperature of the target air conditioner's battery pack, received from the slave control unit, to the central control unit; The main control unit is used to generate a command corresponding to the target mode when it is determined that the target air conditioner needs to be controlled to be in the target mode based on the temperature of the target air conditioner's battery pack, and send the command to the main control unit so that the main control unit controls the target air conditioner to enter the target mode according to the command.

2. The device for controlling an air conditioner according to claim 1, characterized in that, The device for controlling the air conditioner also includes: a switch and a server; The server and the central control unit are respectively communicatively connected to the switch.

3. The device for controlling an air conditioner according to claim 1, characterized in that, The number of slave control units is multiple; among them, any two adjacent slave control units are communicatively connected, and the target slave control unit is communicatively connected to the master control unit.

4. The device for controlling an air conditioner according to claim 1, characterized in that, The number of air conditioners and the number of main control units are both multiple, and the number of main control units is the same as the number of air conditioners; each air conditioner is communicatively connected to a different main control unit; the multiple main control units are communicatively connected to the central control unit.

5. The device for controlling an air conditioner according to any one of claims 1-4, characterized in that, The main control unit is connected to the central control unit via a controller local area network bus; the main control unit is connected to the air conditioner via a single host communication interface.

6. The device for controlling an air conditioner according to claim 3, characterized in that, Among the multiple slave control units, the target slave control unit is connected to the master control unit through a serial peripheral interface. Any two adjacent slave control units are connected through a serial peripheral interface. The other slave control units are the slave control units other than the target slave control unit among the multiple slave control units.

7. The device for controlling an air conditioner according to claim 2, characterized in that, The server-side includes: a cloud server or a manufacturing execution system.

8. An energy storage system, characterized in that, include: Air conditioner, battery pack, energy storage container, central control combiner cabinet, and device for controlling air conditioner as described in any one of claims 1-7; The energy storage container has a door on its side wall; the air conditioner is connected to the door of the energy storage container and is communicatively connected to the main control unit; the battery pack and the central control combiner cabinet are respectively installed inside the energy storage container; the central control combiner cabinet is connected to the battery pack and is used to supply power to the battery pack.

9. The energy storage system according to claim 8, characterized in that, The energy storage container includes at least one receiving cavity; the receiving cavity is equipped with a fire-fighting device.

10. The energy storage system according to claim 8 or 9, characterized in that, The battery packs are multiple, and the multiple battery packs are divided into multiple groups; the energy storage system also includes: multiple high-voltage boxes; each high-voltage box is connected to a different group of battery packs.

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