Energy storage plant monitoring system

Abstract

The application belongs to the technical field of energy storage and specifically relates to an energy storage power station monitoring system. The system comprises a detection module, a multi-channel switching valve, a conduit group, a double-pump unit and a main control unit. The multi-channel switching valve can cyclically switch a single air inlet channel to be in communication with the detection channel, and the remaining air inlet channels are in communication with the shunt channel. The double-pump unit drives the detection and shunt air flow respectively. The conduit group is configured with a dedicated channel for each battery cluster. The main control unit coordinates the work of each component, realizes cyclic detection of the characteristic gas of multiple battery clusters by a single detection module, and can accurately lock the fault battery cluster. The system takes into account the economy and timeliness of monitoring, avoids gas retention and cross contamination, improves detection accuracy, is suitable for large-scale application of energy storage power stations, and provides reliable protection for safe operation of the power station.

Description

Technical Field

[0001] This invention belongs to the field of energy storage technology, and specifically relates to an energy storage power station monitoring system. Background Technology

[0002] With the rapid development of the new energy industry, battery energy storage power stations, as the core infrastructure for power storage and dispatch, have been widely used in various scenarios such as grid peak shaving, distributed energy support, and emergency power supply. Their operational safety directly affects the overall stability of the power station and the safety of the surrounding environment. Battery clusters, as the core energy storage units of energy storage power stations, are highly susceptible to thermal runaway failures under abnormal operating conditions such as long-term charge-discharge cycles, high-temperature environments, overcharging, over-discharging, or circuit faults. During thermal runaway, characteristic gases such as hydrogen, carbon monoxide, and hydrogen fluoride are released. Changes in the content of these gases are key indicators for predicting the safety status of battery clusters and warning of potential failures. Therefore, accurate and real-time monitoring of the characteristic gases released by each battery cluster is a core means of preventing safety accidents in energy storage power stations.

[0003] Existing gas monitoring solutions for energy storage power stations primarily involve deploying gas detection modules within the space housing battery clusters to monitor the composition and concentration of gases. However, this approach has significant drawbacks: the detection modules are typically located at the top of the space. When a battery cluster releases a characteristic gas, the gas requires a considerable period of diffusion before reaching the top detection module and being captured, resulting in excessively long data feedback delays. This delay can hinder fault warnings, preventing timely intervention and potentially allowing the fault to escalate, severely impacting the operational safety of the energy storage power station. Furthermore, while configuring a separate detection module for each battery cluster could shorten response time, it would significantly increase equipment investment, wiring complexity, and subsequent maintenance costs, failing to meet the economic requirements for large-scale energy storage power station applications.

[0004] The methods described in this section are not necessarily methods that had been previously conceived or adopted. Unless otherwise specified, no method described in this section should be assumed to be prior art simply because it is included in this section. Similarly, unless otherwise specified, the issues mentioned in this section should not be considered to be accepted in any prior art. Summary of the Invention

[0005] This invention aims to solve the problems of high latency, high cost of separate detection modules, and ambiguous fault location in existing battery cluster gas monitoring solutions for energy storage power stations. It provides an energy storage power station monitoring system that enables accurate, real-time, cyclical detection of characteristic gases from multiple battery clusters using a single detection module, balancing monitoring economy and timeliness. At the same time, it can accurately locate faulty battery clusters, providing reliable protection for the safe operation of energy storage power stations and adapting to the needs of large-scale applications.

[0006] To achieve the above objectives, one technical solution adopted by the present invention is: A monitoring system for an energy storage power station, used for safety monitoring of battery clusters in a battery energy storage power station, comprising: The detection module is used to detect the content of characteristic gases; The multi-channel switching valve has multiple air inlets, a first air outlet, and a second air outlet. One end of the first air outlet is connected to the detection module, and the other end is connected to only one of the air inlets at a time. It can cycle and switch between multiple air inlets. When one air inlet is connected to the first air outlet, the other air inlets are connected to the second air outlet. The duct assembly includes multiple ducts, one end of each duct is used to be positioned at the location of a single battery cluster, and the other end of each duct is connected to each air intake duct in a corresponding manner. The first pump unit is used to drive the gas in the first outlet channel to flow to the detection module; The second pump unit is used to drive the gas in the intake duct to flow to the second outlet duct. The main control unit is electrically connected to the detection module, the multi-channel switching valve, the first pump unit, and the second pump unit, respectively. The main control unit is used to control the switching action of the multi-channel switching valve and the start and stop of the first pump unit and the second pump unit.

[0007] Furthermore, the multi-channel switching valve includes: The housing has a main cavity; multiple air inlets are distributed in a ring at intervals in the housing and communicate with the main cavity, and the outer end of the air inlets is used to connect to the duct; a second air outlet is provided in the housing and communicates with the main cavity. The switching tube is rotatably and sealingly connected to the housing along the axial direction of the housing, and the rotation axis is concentric with the annular distribution trajectory of the air intake channel; the inner end of the switching tube extends into the main cavity and forms a switching part that seals against the inner wall of the main cavity, and the outer end extends to the outer side of the housing and forms a drive connection part, which is connected to the detection module; the first air outlet channel is opened along the axial direction of the switching tube and extends through its outer end, and an air inlet is opened on the switching part corresponding to the first air outlet channel, the diameter of the air inlet being adapted to the inner port diameter of a single air intake channel; The drive unit has its output end connected to the drive connection part for driving the switching tube to rotate. When the switching tube rotates, the air inlet can be aligned and connected with the inner end of each air inlet channel one by one, realizing the selective connection between the first air outlet channel and a single air inlet channel. The remaining air inlets are connected to the second air outlet channel through the main cavity.

[0008] Furthermore, the multi-channel switching valve also includes a position sensor, which is disposed in the housing and arranged corresponding to the switching part or switching tube, for detecting the rotational position of the switching part, and the position sensor is electrically connected to the main control unit to provide feedback position signals.

[0009] Furthermore, the housing has a circular cross-sectional shape, and multiple air intakes are arranged on the periphery of the housing.

[0010] Furthermore, an air outlet connector communicating with the second air outlet is fixedly connected to the axial end of the housing, and the air outlet connector is coaxially arranged with the housing.

[0011] Furthermore, the air outlet connector and the switching part are located at opposite ends of the housing, respectively.

[0012] Furthermore, the axes of the switching part and the drive connection part are perpendicular to each other, and the switching part and the drive connection part are connected by an elbow, with a counterweight part on the side of the elbow away from the switching part.

[0013] Furthermore, the housing is fixedly connected to an air intake connector that communicates with the air intake at each corresponding air intake.

[0014] Furthermore, the air inlet of the first pump unit is connected to the air outlet of the detection module, and the air outlet of the first pump unit is connected to the external atmosphere or a gas treatment device.

[0015] Furthermore, the air inlet of the second pump unit is connected to the second air outlet, and the air outlet of the second pump unit is connected to the external atmosphere or a gas treatment device.

[0016] The energy storage power station monitoring system disclosed in this invention addresses the pain points of existing battery cluster gas monitoring solutions, such as high detection delay, large equipment investment, and unclear fault location. Through scientific structural design and coordinated component operation, it achieves multiple improvements in monitoring accuracy, economy, stability, and intelligence. The specific beneficial effects are as follows: First, it balances timely monitoring with economical equipment. This invention utilizes the switching function of a multi-channel switching valve to achieve cyclical, time-sharing detection of characteristic gases from multiple battery clusters by a single detection module. This eliminates the need for a separate detection module for each battery cluster, significantly reducing the overall cost of equipment procurement, wiring, and subsequent maintenance, thus meeting the economic requirements for large-scale energy storage power station applications. Simultaneously, compared to traditional spatial diffusion-based detection, this system can directly collect gas samples from each battery cluster, shortening the gas transmission path at the source and avoiding monitoring delays caused by gas diffusion, thus providing sufficient time for fault early warning.

[0017] Secondly, it improves detection accuracy, timeliness, and data reliability. The multi-path switching valve adopts a precise rotary switching structure, coupled with real-time feedback calibration from a position sensor, enabling precise alignment between the air intake and detection pathways, effectively avoiding detection errors caused by switching deviations. The first and second pump units work together to drive the detection airflow and the diversion airflow to flow stably, providing sufficient and stable gas samples for the detection module while promptly expelling gases not involved in the detection, preventing gas stagnation and cross-contamination between gases from different battery clusters. In addition, the conduit assembly is equipped with a dedicated transmission channel for each battery cluster, avoiding premature mixing of gases during transmission. With the continuous drive of the second pump unit, the gas in the conduit is always in a state of real-time updating. When switching to the detection of the corresponding battery cluster, only fresh gas enters the detection module in real time, without waiting for gas replacement or diffusion, further ensuring the authenticity, accuracy, and timeliness of the detection data.

[0018] Third, the system's operational stability and adaptability to complex operating conditions are enhanced. The multi-channel switching valve adopts a shell structure with excellent sealing performance, allowing for the selection of appropriate sealing methods and materials based on actual operating conditions. It can withstand the complex operating environment of high temperatures and dust in energy storage power stations. The counterweight structure design of the switching pipe can balance the center of gravity during rotation, reducing the impact of vibration on sealing performance and extending the service life of the equipment. At the same time, the modular design of each component of the system facilitates easy disassembly and assembly, simplifies maintenance, effectively reduces the difficulty of later operation and maintenance, and ensures the long-term stable operation of the system.

[0019] Fourth, it enables automated monitoring and precise fault location. The main control unit can coordinate the switching actions of multi-channel switching valves, the start and stop of pump units, and the data acquisition of detection modules, completing automated cyclic detection of all battery clusters without manual intervention, significantly improving monitoring efficiency. Because the switching process of the multi-channel switching valves can be accurately recorded, the main control unit can clearly identify the battery cluster corresponding to each detection channel. When the content of characteristic gases exceeds the standard, it can immediately issue an alarm signal and accurately locate the faulty battery cluster, providing clear guidance for staff to quickly troubleshoot and take intervention measures, effectively preventing the fault from spreading and ensuring the overall safety of the power station.

[0020] Fifth, the system boasts a wide range of applications and strong scalability. The number of air intakes and ducts can be flexibly adjusted according to the scale of the energy storage power station to adapt to the monitoring needs of different numbers of battery clusters. The detection module can be equipped with corresponding sensor components based on the battery type, meeting the detection requirements for different thermal runaway characteristic gases, demonstrating exceptional versatility. Furthermore, the system can be easily integrated into the existing central control system of the energy storage power station, facilitating the upgrade and transformation of existing power stations, and possessing broad application prospects and promotional value. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the structure of a multi-channel switching valve in one embodiment of the energy storage power station monitoring system of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a multi-channel switching valve in one embodiment of the energy storage power station monitoring system of the present invention. Figure 2 ; Figure 3 This is a first cross-sectional schematic diagram of a multi-channel switching valve in one embodiment of the energy storage power station monitoring system of the present invention; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a second cross-sectional schematic diagram of a multi-channel switching valve in one embodiment of the energy storage power station monitoring system of the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point B; Figure 7 for Figure 5 Enlarged schematic diagram of the structure at point C.

[0022] The meanings of the labels in the attached diagram are as follows: Multi-channel switching valve 1, air inlet 1a, first air outlet 1b, second air outlet 1c, housing 14, main chamber 14a, air outlet connector 141, air inlet connector 142, switching pipe 15, switching part 151, air inlet 151a, drive connection part 152, elbow 153, counterweight part 154. Detailed Implementation

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Reference Figures 1-7As shown, this embodiment discloses an energy storage power station monitoring system for safety monitoring of battery clusters in a battery energy storage power station. It includes a detection module, a multi-channel switching valve 1, a conduit assembly, a first pump unit, a second pump unit, and a main control unit. The detection module is used to detect the content of characteristic gases. Its core function is to capture characteristic gases and convert them into identifiable signals, providing a basis for safety judgment. In this embodiment, the detection module adopts an integrated gas sensing structure, which can specifically detect characteristic gases commonly found in battery thermal runaway. Depending on the type of battery in the energy storage power station, sensing components with corresponding detection accuracy can be configured to adapt to the characteristic gas release patterns of different batteries. The multi-channel switching valve 1 has multiple air inlets 1a, a first air outlet 1b, and a second air outlet 1c. One end of the first air outlet 1b is connected to the detection module, while the other end is connected to only one of the air inlets 1a at a time. It can cyclically switch between multiple air inlets 1a. When one air inlet 1a is connected to the first air outlet 1b, the remaining air inlets 1a are connected to the second air outlet 1c. This structural design enables time-sharing detection of gas from multiple battery clusters by a single detection module, while preventing gas stagnation in undetected air channels. In this embodiment, the switching action of the multi-channel switching valve 1 is achieved by a drive structure, which can be electrically or pneumatically driven, as long as the sealing and stability of the air channel switching are met.

[0025] In this embodiment, the multi-channel switching valve 1 includes a housing 14, a switching pipe 15, and a driving component. The housing 14 has a main cavity 14a, and multiple air inlets 1a are distributed in a circular pattern at intervals on the housing 14 and communicate with the main cavity 14a. The outer end of each air inlet 1a is used to connect to a conduit. A second air outlet 1c is located on the housing 14 and communicates with the main cavity 14a. The housing 14 provides mounting support for each airway and the internal structure, while ensuring the airtightness of the gas flow. In this embodiment, the housing 14 is made of a material with excellent sealing performance, and a sealing coating can be provided on the inner wall of the housing 14 to further improve the sealing effect. The switching tube 15 is rotatably and sealingly connected to the housing 14 along the axial direction. The rotation axis is concentric with the annular distribution trajectory of the air intake duct 1a. The inner end of the switching tube 15 penetrates into the main cavity 14a and forms a switching part 151 that seals against the inner wall of the main cavity. The outer end extends to the outside of the housing 14 and forms a drive connection part 152, which is rotatably connected to the detection module. The first air outlet duct 1b is opened along the axial direction of the switching tube 15 and penetrates its outer end. An air inlet 151a is provided on the switching part 151 corresponding to the first air outlet duct 1b. The diameter of the air inlet 151a is adapted to the inner port diameter of a single air intake duct 1a. The switching tube 15 rotates to connect the air inlet 151a with different air intake ducts 1a, thereby completing the airway switching. In this embodiment, the switching part 151 and the inner wall of the main cavity are sealed by surface contact. In other embodiments, sealing rings or other sealing methods can also be used, as long as it is ensured that gas does not leak in large quantities in the connection gap. The output end of the drive component is connected to the drive connection part 152 for driving the switching tube 15 to rotate. When the switching tube 15 rotates, the air inlet 151a can be aligned and connected with the inner end of each air inlet 1a one by one, realizing selective connection between the first air outlet 1b and a single air inlet 1a. The remaining air inlets 1a are connected to the second air outlet 1c through the main cavity 14a. The drive component provides stable rotational power to the switching tube 15 to ensure the accuracy of the switching action. In this embodiment, the drive component adopts a power structure linked with the main control unit, and can adopt a stepper drive or servo drive structure to improve the switching positioning accuracy.

[0026] In this embodiment, the multi-channel switching valve 1 also includes a position sensor. The position sensor is disposed on the housing 14 and arranged corresponding to the switching part 151 or the switching pipe 15. It is used to detect the rotational position of the switching part 151, and the position sensor is electrically connected to the main control unit to provide feedback position signals. The position sensor can ensure that the air inlet 151a and the air intake duct 1a are accurately aligned, avoiding switching deviations from affecting the detection effect. Different types of detection elements can also be used for the position sensor, as long as they can achieve accurate feedback of the rotational position. In this embodiment, the housing 14 has a circular cross-sectional shape, and multiple air intakes 1a are arranged on the circumference of the housing 14. This structure facilitates the circular distribution of the air intakes 1a, adapting to the rotational switching action of the switching pipe 15. In this embodiment, the housing 14 is processed into an integral structure, but a split assembly structure can also be adopted to facilitate the inspection and replacement of internal components. An air outlet connector 141, communicating with the second air outlet 1c, is fixedly connected to the axial end of the housing 14. The air outlet connector 141 is coaxially arranged with the switching pipe 15. The air outlet connector 141 is used to achieve a stable connection between the second air outlet 1c and the subsequent pipeline. The coaxial arrangement ensures smooth flow of the split gas and avoids airflow obstruction. In this embodiment, the air outlet connector 141 adopts a sealed connection structure, which can be connected to the air inlet end of the second pump unit through a quick-connect structure, improving assembly efficiency. The air outlet connector 141 and the switching part 151 are located at opposite ends of the housing 14. This arrangement optimizes the structural layout and avoids mutual interference between the subsequent assembly structures of the two. The axes of the switching part 151 and the drive connection part 152 are perpendicular to each other. The switching part 151 and the drive connection part 152 are connected by an elbow 153. The elbow 153 has a counterweight 154 on the side opposite to the switching part 151. The counterweight 154 can balance the center of gravity of the switching pipe 15 when it rotates, reducing the impact of vibration on the sealing performance. In this embodiment, the counterweight 154 and the elbow 153 are integrally formed. In other embodiments, a detachable counterweight structure can also be used to facilitate adjustment of the counterweight according to actual working conditions. The housing 14 is fixedly connected to each air inlet 1a with an air inlet connector 142 communicating with the air inlet 1a. The air inlet connector 142 is used to achieve a stable connection between the air inlet 1a and the duct to ensure no leakage during gas transmission.

[0027] The conduit assembly comprises multiple conduits. One end of each conduit is positioned at the location of a single battery cluster, and the other end of each conduit is connected to a corresponding air inlet 1a. The conduit assembly provides a dedicated transmission channel for the gas from each battery cluster, preventing premature mixing of gases from different battery clusters from affecting the detection results. In this embodiment, the conduits are made of corrosion-resistant materials, adaptable to the complex operating conditions of energy storage power stations. An anti-stick coating can be applied to the inner wall of the conduits to prevent impurities from accumulating and clogging them. The first pump unit drives the gas in the first outlet 1b to flow towards the detection module, providing power for the gas sample to enter the detection module and ensuring that the detection module can quickly capture the gas sample. In this embodiment, the first pump unit is linked with the main control unit and can be started and stopped according to the detection rhythm. In other embodiments, an adjustable speed pump structure can also be used to adapt to different gas flow rate requirements. The air inlet of the first pump unit is connected to the air outlet of the detection module, and the air outlet of the first pump unit is connected to the external atmosphere or a gas treatment device to achieve reasonable discharge or treatment of the gas after detection, avoiding environmental pollution. The second pump unit drives the gas in the intake duct 1a to flow into the second outlet duct 1c. It can also drive the flow of gas in the intake duct 1a, which is not connected to the first outlet duct 1b, preventing gas stagnation and deterioration. In this embodiment, the second pump unit is sealed to the outlet connector 141 via a pipeline and operates continuously to maintain a stable split gas flow. In other embodiments, it can operate intermittently according to the detection cycle to reduce energy consumption. The intake end of the second pump unit is connected to the second outlet duct 1c via the outlet connector 141, and the outlet end of the second pump unit is connected to the external atmosphere or a gas treatment device to ensure proper treatment of the split gas.

[0028] The main control unit is electrically connected to the detection module, multi-channel switching valve 1, first pump unit, and second pump unit. The main control unit controls the switching action of multi-channel switching valve 1 and the start / stop of the first and second pump units. It is the control core of the entire system, responsible for coordinating the orderly operation of all components. In this embodiment, the main control unit adopts an integrated control module, which can realize signal acquisition, logic judgment, and command output. In other embodiments, a distributed control structure can also be adopted, distributing the control functions to the corresponding control modules of each component to improve the system's operational stability.

[0029] In this embodiment, the energy storage power station monitoring system is used as follows: After the system is started, the main control unit first controls the second pump unit to start, so that the gas in the inlet duct 1a that is not being detected can enter the second pump unit through the main chamber 14a, the second outlet duct 1c, and the outlet connector 141, maintaining the airflow stability in the duct. Subsequently, the main control unit controls the drive of the multi-channel switching valve 1 to rotate the switching tube 15. The position sensor detects the rotation position of the switching part 151 in real time and feeds it back to the main control unit. The main control unit calibrates the position of the switching tube 15 according to the feedback signal, so that the air inlet 151a of the switching part 151 is aligned and connected with one of the inlet ducts 1a. At this time, the inlet duct 1a forms a passage with the detection module through the first outlet duct 1b, and the other inlet ducts 1a form a passage with the second outlet duct 1c through the main chamber 14a. Next, the main control unit controls the first pump unit to start, driving the gas corresponding to the location of the battery cluster through the conduit, air inlet 1a, air inlet 151a, and first air outlet 1b into the detection module. The detection module detects the content of characteristic gases in the gas and transmits the detection results to the main control unit, which analyzes and judges the results. When the detection of the battery cluster is completed, the main control unit controls the first pump unit to stop working, and simultaneously controls the drive component to rotate the switching tube 15, aligning the air inlet 151a with the next air inlet 1a, repeating the above detection steps to achieve cyclic detection of all battery clusters. During the detection process, if the detection results received by the main control unit exceed the safe range, an alarm signal will be issued in a timely manner, and the location of the corresponding battery cluster will be locked, facilitating intervention by personnel. In other embodiments, the detection sequence and interval can also be preset by the main control unit to flexibly adjust the detection rhythm and adapt to the needs of energy storage power stations of different scales.

[0030] In summary, the energy storage power station monitoring system of this embodiment achieves accurate monitoring of characteristic gases in each battery cluster of the battery energy storage power station by rationally setting the structure and connection relationship of each component. It utilizes a multi-channel switching valve 1 to achieve cyclic detection of multiple battery clusters by a single detection module, eliminating the need for a separate detection module for each battery cluster. This effectively controls equipment investment, wiring complexity, and subsequent maintenance costs, balancing economy and practicality. Simultaneously, the cooperation of the first and second pump units, combined with the structural design of the outlet connector 141 connected to the second outlet duct 1c, ensures smooth flow of diverted gas, avoiding gas stagnation and cross-contamination, thus improving the accuracy of the detection results. The placement of the position sensor further ensures the accuracy of gas channel switching, making the detection process stable and reliable. The structural design adopted in this embodiment can adapt to the complex operating conditions of energy storage power stations. In other embodiments, through flexible adjustments to the component structure, it can also adapt to energy storage power stations of different scales and battery types, demonstrating a wide range of applications. Compared with existing monitoring schemes, it effectively solves the problem of feedback delay in traditional spatial detection, while avoiding the high cost of separately configuring detection modules, providing a reliable guarantee for the safe operation of energy storage power stations.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A monitoring system for an energy storage power station, used for safety monitoring of battery clusters in a battery energy storage power station, characterized in that, include: The detection module is used to detect the content of characteristic gases; The multi-channel switching valve has multiple air inlets, a first air outlet, and a second air outlet. One end of the first air outlet is connected to the detection module, and the other end is connected to only one air inlet at a time, and can be cyclically switched among multiple air inlets; when one air inlet is connected to the first air outlet, the other air inlets are connected to the second air outlet. The duct assembly includes multiple ducts, one end of each duct is used to be positioned at the location of a single battery cluster, and the other end of each duct is connected to each air intake duct in a corresponding manner. The first pump unit is used to drive the gas in the first outlet channel to flow to the detection module; The second pump unit is used to drive the gas in the intake duct to flow to the second outlet duct. The main control unit is electrically connected to the detection module, the multi-channel switching valve, the first pump unit, and the second pump unit, respectively. The main control unit is used to control the switching action of the multi-channel switching valve and the start and stop of the first pump unit and the second pump unit.

2. The energy storage power station monitoring system according to claim 1, characterized in that, The multi-channel switching valve includes: The housing has a main cavity; multiple air inlets are arranged in a ring at intervals in the housing and communicate with the main cavity, and the outer ends of the air inlets are used to connect to ducts; a second air outlet is located in the housing and communicates with the main cavity. The switching tube is rotatably and sealingly connected to the housing along the axial direction of the housing, and the rotation axis is concentric with the annular distribution trajectory of the air intake channel; the inner end of the switching tube extends into the main cavity and forms a switching part that seals against the inner wall of the main cavity, and the outer end extends to the outer side of the housing and forms a drive connection part, which is connected to the detection module; the first air outlet channel is opened along the axial direction of the switching tube and extends through its outer end, and an air inlet is opened on the switching part corresponding to the first air outlet channel, the diameter of the air inlet being adapted to the inner port diameter of a single air intake channel; The drive unit has its output end connected to the drive connection part for driving the switching tube to rotate. When the switching tube rotates, the air inlet can be aligned and connected with the inner end of each air inlet channel one by one, realizing the selective connection between the first air outlet channel and a single air inlet channel. The remaining air inlets are connected to the second air outlet channel through the main cavity.

3. The energy storage power station monitoring system according to claim 2, characterized in that: The multi-channel switching valve also includes a position sensor, which is located in the housing and arranged corresponding to the switching part or switching tube. The position sensor is used to detect the rotational position of the switching part and is electrically connected to the main control unit to provide feedback position signals.

4. The energy storage power station monitoring system according to claim 2, characterized in that: The shell has a circular cross-sectional shape, and multiple air intakes are arranged on the periphery of the shell.

5. The energy storage power station monitoring system according to claim 4, characterized in that: An air outlet connector that communicates with the second air outlet is fixedly connected to the axial end of the housing, and the air outlet connector is coaxially arranged with the housing.

6. The energy storage power station monitoring system according to claim 5, characterized in that: The air outlet connector and the switching part are located at opposite ends of the housing, respectively.

7. The energy storage power station monitoring system according to claim 4, characterized in that: The axes of the switching part and the drive connection part are perpendicular to each other. The switching part and the drive connection part are connected by an elbow. The elbow has a counterweight on the side away from the switching part.

8. The energy storage power station monitoring system according to claim 2, characterized in that: Each air intake port is fixedly connected to an air intake port at each corresponding air intake port of the housing.

9. The energy storage power station monitoring system according to claim 1, characterized in that: The air inlet of the first pump unit is connected to the air outlet of the detection module, and the air outlet of the first pump unit is connected to the external atmosphere or a gas treatment device.

10. The energy storage power station monitoring system according to claim 1, characterized in that: The air inlet of the second pump unit is connected to the second air outlet, and the air outlet of the second pump unit is connected to the outside atmosphere or a gas treatment device.

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