Multi-stage liquid leakage monitoring device and monitoring method for energy storage system

Abstract

The invention discloses a multistage liquid leakage monitoring device and method for an energy storage system, the monitoring device comprises a liquid collection disc, a transition groove, a sensing unit and a monitoring alarm unit, the liquid collection disc is arranged at the bottom of a battery cabin of the energy storage system, the transition groove is formed in the lowest position of the bottom surface of the liquid collection disc, a liquid discharge hole is formed in the bottom surface of the transition groove, and the sensing unit is arranged in the liquid discharge hole. The sensing unit is arranged around the liquid discharge hole, and the monitoring alarm unit is electrically connected with the sensing unit. The technical problems that an existing energy storage system liquid leakage monitoring mode is slow in alarm response and inaccurate in alarm, safety is reduced, and manpower is wasted can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage systems, and in particular to a multi-stage leakage monitoring device and a monitoring method for energy storage systems. Background Art

[0002] In the prior art, monitoring of liquid leakage in energy storage systems usually involves setting a water immersion line at the bottom of the energy storage system and setting a sensor on the water immersion line. When liquid leakage in the energy storage system contacts the sensor on the water immersion line, a signal will be fed back to the controller. The controller controls the alarm to send an alarm signal to remind relevant operators to take measures to ensure the normal operation of the energy storage system. However, the existing method for monitoring liquid leakage in energy storage systems has the following shortcomings: 1. The water immersion line is set too high, and the bottom of the energy storage system needs to be fully submerged to contact the sensor for signal feedback, and the alarm response is slow; 2. Condensation water on the battery pack drips onto the sensor on the water immersion line, which will also cause an alarm. This situation has no effect on the normal operation of the energy storage system, and wastes manpower to investigate. In summary, the existing method for monitoring liquid leakage in energy storage systems has the problem of inaccurate alarms, and its related technologies need to be improved. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-level leakage monitoring device and method for energy storage systems, which can solve the technical problems of slow alarm response, inaccurate alarm, reduced safety and waste of manpower in existing leakage monitoring methods for energy storage systems.

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a multi-stage leakage monitoring device for an energy storage system, comprising: A liquid collecting tray, which is arranged at the bottom of the battery compartment of the energy storage system and is used to collect liquid leakage from the energy storage system; A transition groove, the transition groove is opened at the lowest point of the bottom surface of the liquid collecting tray, and the bottom surface of the transition groove is formed with a drainage hole; A sensor unit, the sensor unit is arranged around the drainage hole and is used to collect leakage parameters; A monitoring and alarm unit is electrically connected to the sensor unit and is used to receive the leakage parameter and output different alarm levels according to the leakage parameter.

[0005] In some embodiments, the bottom surface of the liquid collecting tray is an inclined surface, and the transition groove is arranged at the lowest point of the inclined surface.

[0006] In some embodiments, the bottom surface of the liquid collection tray includes a first bending surface and a second bending surface, and the first bending surface and the second bending surface intersect to form a U-shaped structure or a V-shaped structure or a composite structure of a partial U-shaped structure and a partial V-shaped structure, and the transition groove is arranged at the lowest point of the U-shaped structure, V-shaped structure or composite structure.

[0007] In some embodiments, the drainage holes include a primary drainage hole and a secondary drainage hole, the primary drainage hole is opened on both sides of the bottom surface of the transition groove, and the secondary drainage hole is opened in the middle of the bottom surface of the transition groove.

[0008] In some embodiments, a partition is further included, wherein the partition is vertically disposed on the bottom surface of the transition groove and is used to separate the primary drainage hole from the secondary drainage hole.

[0009] In some embodiments, the top surface of the partition is lower than the bottom surface of the liquid collection tray.

[0010] In some embodiments, the sensing unit includes a primary sensing unit and a secondary sensing unit. The primary sensing unit is arranged around the primary drainage hole, and the secondary sensing unit is arranged around the secondary drainage hole. The primary sensing unit and the secondary sensing unit are electrically connected to the monitoring alarm unit respectively.

[0011] In some embodiments, the monitoring and alarm unit includes a processing module and an alarm module. The processing module is used to receive and process the leakage parameters to generate monitoring information. The alarm module is electrically connected to the processing module to determine whether to issue an alarm based on the monitoring information.

[0012] In a second aspect, the present invention provides a method for monitoring a multi-stage leakage of an energy storage system, which is used for monitoring the multi-stage leakage monitoring device of the energy storage system according to the first aspect of the present invention, and specifically comprises the following steps: S1, providing a liquid collecting tray at the bottom of the battery compartment of the energy storage system to collect liquid leakage from the energy storage system; S2, a transition groove is formed at the lowest point of the bottom surface of the liquid collecting tray, and a drainage hole is formed at the bottom surface of the transition groove; S3, installing a sensor unit around the drainage hole to collect leakage parameters; S4, receiving the leakage parameter through a monitoring alarm unit, and outputting different alarm levels according to the leakage parameter.

[0013] In some embodiments, step S2 specifically includes opening a primary drainage hole and a secondary drainage hole on the bottom surface of the transition groove, wherein the primary drainage hole is located on both sides of the bottom surface of the transition groove, and the secondary drainage hole is located in the middle of the bottom surface of the transition groove, and the primary drainage hole and the secondary drainage hole are separated by a partition; Step S3 specifically includes installing a primary sensor unit around the primary drainage hole, and installing a secondary sensor unit around the secondary drainage hole.

[0014] Compared with the prior art, the present invention provides a multi-stage leakage monitoring device and method for an energy storage system, which arranges a collecting tray at the bottom of the battery compartment, and arranges a transition groove at the lowest point of the bottom surface of the collecting tray and a drainage hole at the bottom surface of the transition groove, so that the leakage of the energy storage system is collected into the collecting tray and then enters the transition groove. At this time, the sensor unit arranged around the drainage hole can sense the presence of leakage and promptly feed back the signal to the monitoring alarm unit, thereby solving the problem of untimely early warning in the existing monitoring method. At the same time, the sensor unit chamber arranged in the present invention is installed inside the collecting tray and further installed in the transition groove, which can prevent condensed water from dripping directly onto the sensor unit, thereby solving the problem of frequent misjudgment in the existing monitoring method and improving the monitoring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the monitoring device of the present invention being arranged in an energy storage system; Figure 2 is a top view of the monitoring device of the present invention; Figure 3 is a side view of the monitoring device of the present invention; Figure 4 yes Figure 3 A partial enlarged view of Figure 5 is a flow chart of the monitoring method of the present invention; Figure 6 It is a control process diagram of the monitoring method described in the present invention.

[0016] The following are the descriptions of the reference numerals: 100. Liquid collection tray; 200, transition groove, 210, drainage hole, 211, primary drainage hole, 212, secondary drainage hole; 300, sensor unit, 310, primary sensor unit, 320, secondary sensor unit; 400, partition; 500. Battery compartment. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In view of the technical problems that the leakage monitoring devices currently used in energy storage systems have slow alarm response, condensed water droplets from the battery pack on the water immersion line will also cause alarms and thus misjudgments, waste manpower, and cannot provide feedback on the degree of leakage, the present invention proposes a multi-level leakage monitoring device and monitoring method for an energy storage system, which can determine the size of the leakage, improve the alarm speed and accuracy, and avoid misjudgments.

[0019] Please also read Figure 1-4 As shown, this embodiment provides a multi-stage leakage monitoring device for an energy storage system, including a liquid collecting tray 100, a transition groove 200, a sensor unit 300 and a monitoring alarm unit, wherein the liquid collecting tray 100 is arranged at the bottom of the battery compartment 500 of the energy storage system, and is used to collect leakage from the energy storage system; the transition groove 200 is opened at the lowest point of the bottom surface of the liquid collecting tray 100, and a drainage hole 210 is formed on the bottom surface of the transition groove 200; the sensor unit 300 is arranged around the drainage hole 210, and is used to collect leakage parameters; the monitoring alarm unit is electrically connected to the sensor unit 300, and is used to receive the leakage parameters and output different alarm levels according to the leakage parameters.

[0020] In this embodiment, a liquid collecting tray 100 is provided at the bottom of the battery compartment 500 to collect the leaked liquid from the energy storage system, and a transition groove 200 is provided at the lowest point of the bottom surface of the liquid collecting tray 100, so that the collected leaked liquid flows into the transition groove 200. At this time, a drainage hole 210 is provided in the transition groove 200, which can discharge the leaked liquid on the one hand, and a sensor unit 300 is provided around the drainage hole 210 to detect the leaked liquid on the other hand. Compared with the existing monitoring device, the leakage of this embodiment can be monitored in time and fed back to the monitoring alarm unit to output different alarm levels, so that the operator can take measures in time to ensure the normal operation of the energy storage system. At the same time, the sensor unit 300 of this embodiment is provided in the liquid collecting tray 100, and further provided in the transition groove 200, so that the condensed water of the battery pack can be prevented from dripping directly onto the sensor unit 300, thereby avoiding misjudgment and improving the monitoring accuracy of the leakage monitoring device.

[0021] In one embodiment, the liquid collecting tray 100 consists of a bottom surface and four side surfaces. The bottom surface of the liquid collecting tray 100 is an inclined surface. The inclined direction of the inclined surface is from one long side of the bottom surface to the other long side. The transition groove 200 is arranged at the lowest point of the inclined surface so that the leaked liquid can flow into the transition groove 200 by gravity.

[0022] In one embodiment, the bottom surface of the liquid collection tray 100 can also be a bending structure, for example, it includes a first bending surface and a second bending surface, the first bending surface and the second bending surface intersect to form a U-shaped structure or a V-shaped structure or a composite structure of a partial U-shaped structure and a partial V-shaped structure, and the transition groove 200 is arranged at the lowest point of the U-shaped structure, V-shaped structure or composite structure.

[0023] It is understandable that, regardless of whether the bottom surface of the liquid collecting tray 100 is a plane or a bent structure, it is a necessary condition that it has a lowest point where the transition groove 200 can be set. In actual applications, the bottom surface shape of the liquid collecting tray 100 can be flexibly designed according to actual needs.

[0024] In one embodiment, the drainage hole 210 includes a primary drainage hole 211 and a secondary drainage hole 212 , wherein the primary drainage hole 211 is opened on both sides of the bottom surface of the transition groove 200 , and the secondary drainage hole 212 is opened in the middle of the bottom surface of the transition groove 200 .

[0025] In one embodiment, the monitoring device further includes a partition 400 , which is vertically disposed on the bottom surface of the transition groove 200 and is used to separate the primary drainage hole 211 from the secondary drainage hole 212 .

[0026] In one embodiment, the top surface of the partition 400 is lower than the bottom surface of the liquid collecting tray 100, so that the collected leaked liquid first flows into the primary drainage hole 211. When the space in the transition groove 200 where the primary drainage hole 211 is located is filled, the leaked liquid will pass over the partition 400 and flow into the space in the transition groove 200 where the secondary drainage hole 212 is located, so as to realize a graded alarm.

[0027] In one embodiment, the sensor unit 300 includes a primary sensor unit 310 and a secondary sensor unit 320. The primary sensor unit 310 is arranged around the primary drainage hole 211 to collect leakage parameters flowing through the primary drainage hole 211. The secondary sensor unit 320 is arranged around the secondary drainage hole 212 to collect leakage parameters flowing through the secondary drainage hole 212. The primary sensor unit 310 and the secondary sensor unit 320 are electrically connected to the monitoring and alarm unit respectively.

[0028] In one embodiment, the monitoring and alarm unit includes a processing module and an alarm module. The processing module is used to receive and process the leakage parameters to generate monitoring information. The alarm module is electrically connected to the processing module to determine whether to issue an alarm based on the monitoring information.

[0029] Second, as Figure 5As shown, this embodiment also provides a multi-stage leakage monitoring method for an energy storage system, which is used for monitoring the multi-stage leakage monitoring device for the energy storage system provided in the first aspect, and specifically includes the following steps: S1, a liquid collecting tray 100 is arranged at the bottom of the battery compartment 500 of the energy storage system to collect liquid leakage from the energy storage system; S2, a transition groove 200 is formed at the lowest point of the bottom surface of the liquid collecting tray 100, and a drainage hole 210 is formed at the bottom surface of the transition groove 200; Specifically, the drainage hole 210 includes a primary drainage hole 211 and a secondary drainage hole 212, wherein the primary drainage hole 211 is located at both sides of the bottom surface of the transition groove 200, and the secondary drainage hole 212 is located in the middle of the bottom surface of the transition groove 200, and the primary drainage hole 211 and the secondary drainage hole 212 are separated by a partition 400; S3, installing a sensor unit 300 around the drainage hole 210 to collect leakage parameters; Specifically, a primary sensor unit 310 is installed around the primary drainage hole 211, and a secondary sensor unit 320 is installed around the secondary drainage hole 212; S4, receiving the leakage parameter through a monitoring alarm unit, and outputting different alarm levels according to the leakage parameter.

[0030] like Figure 6 As shown, the monitoring process of this embodiment is: First, the leaked liquid collects in the liquid collecting tray 100, and then flows into the vicinity of the primary drainage hole 211 in the transition groove 200. The leakage is monitored by the primary sensor unit 310 and feedback is given. At the same time, the leaked liquid is discharged through the primary drainage hole 211. After receiving the feedback signal, the monitoring and alarm unit alarms a small leak. Next, if the leakage amount exceeds the set value, the leaked liquid accumulates, overflows the partition 400 and flows to the vicinity of the secondary drainage hole 212, the secondary sensor unit 320 monitors the leakage and feedback is given. At the same time, the leaked liquid is discharged through the secondary drainage hole 212. The monitoring and alarm unit receives the feedback signal and alarms a large leak. Therefore, in the present invention, small leakage is fed back through the primary sensor unit 310, and the leakage that cannot be discharged from the primary drainage hole 211 will flow to the vicinity of the secondary drainage hole 212. The secondary sensor unit 320 is arranged between the secondary drainage hole 212 and the partition 400 to ensure priority alarm and then drainage.

[0031] It can be understood that the control process in the above embodiment can also set a leakage threshold in the processing module. When the leakage parameters monitored by the first-level sensor unit 310 or the second-level sensor unit 320 are greater than their respective thresholds, the processing module controls the alarm module to issue an alarm to remind the operator to take relevant measures.

[0032] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A multi-stage leakage monitoring device for an energy storage system, characterized in that: include: A liquid collecting tray, which is arranged at the bottom of the battery compartment of the energy storage system and is used to collect liquid leakage from the energy storage system; A transition groove, the transition groove is opened at the lowest point of the bottom surface of the liquid collecting tray, and the bottom surface of the transition groove is formed with a drainage hole; A sensor unit, the sensor unit is arranged around the drainage hole and is used to collect leakage parameters; A monitoring and alarm unit is electrically connected to the sensor unit and is used to receive the leakage parameter and output different alarm levels according to the leakage parameter.

2. The multi-stage leakage monitoring device for energy storage system according to claim 1, characterized in that: The bottom surface of the liquid collecting tray is an inclined surface, and the transition groove is arranged at the lowest point of the inclined surface.

3. The multi-stage leakage monitoring device for energy storage system according to claim 1, characterized in that: The bottom surface of the liquid collecting tray includes a first bending surface and a second bending surface, the first bending surface and the second bending surface intersect to form a U-shaped structure or a V-shaped structure or a composite structure of a partial U-shaped structure and a partial V-shaped structure, and the transition groove is arranged at the lowest point of the U-shaped structure, V-shaped structure or composite structure.

4. The multi-stage leakage monitoring device for energy storage system according to claim 2 or 3, characterized in that: The drainage holes include a primary drainage hole and a secondary drainage hole. The primary drainage hole is opened on both sides of the bottom surface of the transition groove, and the secondary drainage hole is opened in the middle of the bottom surface of the transition groove.

5. The multi-stage leakage monitoring device for energy storage system according to claim 4, characterized in that: It also includes a partition plate, which is vertically arranged on the bottom surface of the transition groove and is used to separate the primary drainage hole from the secondary drainage hole.

6. The multi-stage leakage monitoring device for energy storage system according to claim 5, characterized in that: The top surface of the partition is lower than the bottom surface of the liquid collection tray.

7. The multi-stage leakage monitoring device for energy storage system according to claim 6, characterized in that: The sensor unit includes a primary sensor unit and a secondary sensor unit. The primary sensor unit is arranged around the primary drainage hole, and the secondary sensor unit is arranged around the secondary drainage hole. The primary sensor unit and the secondary sensor unit are electrically connected to the monitoring alarm unit respectively.

8. The multi-stage leakage monitoring device for energy storage system according to claim 1, characterized in that: The monitoring and alarm unit includes a processing module and an alarm module. The processing module is used to receive and process the leakage parameters to generate monitoring information. The alarm module is electrically connected to the processing module to determine whether to issue an alarm based on the monitoring information.

9. A multi-level leakage monitoring method for an energy storage system, characterized in that: The method is used for monitoring the multi-stage leakage monitoring device of the energy storage system according to any one of claims 1 to 8, specifically The following steps are involved: S1, providing a liquid collecting tray at the bottom of the battery compartment of the energy storage system to collect liquid leakage from the energy storage system; S2, a transition groove is formed at the lowest point of the bottom surface of the liquid collecting tray, and a drainage hole is formed at the bottom surface of the transition groove; S3, installing a sensor unit around the drainage hole to collect leakage parameters; S4, receiving the leakage parameter through a monitoring alarm unit, and outputting different alarm levels according to the leakage parameter.

10. The multi-stage leakage monitoring method for energy storage system according to claim 9, characterized in that: Step S2 specifically includes opening a primary drainage hole and a secondary drainage hole on the bottom surface of the transition groove, wherein the primary drainage hole is located on both sides of the bottom surface of the transition groove, and the secondary drainage hole is located in the middle of the bottom surface of the transition groove, and the primary drainage hole and the secondary drainage hole are separated by a partition; Step S3 specifically includes installing a primary sensor unit around the primary drainage hole, and installing a secondary sensor unit around the secondary drainage hole.

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