Leakage liquid detection and collection device for energy storage system

Abstract

The utility model belongs to the technical field of flow batteries, and particularly relates to a liquid leakage detection and collection device for an energy storage system, which comprises a control system, an alarm component and an electrolyte mechanism, the electrolyte mechanism comprises a galvanic pile, a positive electrode liquid storage tank and a negative electrode liquid storage tank are arranged on the two sides of the galvanic pile, the liquid storage tanks are connected with the galvanic pile through first connecting pipes, and first detection assemblies are arranged on the first connecting pipes; the first detection assembly comprises a liquid leakage detection tube, the liquid leakage detection tube comprises an upper detection tube and a lower detection tube, and the liquid leakage detection tube comprises a substrate layer, a sensing layer and a protective layer which are arranged in sequence; two sides of the sensing layer are in circuit connection with conductive elements, the conductive elements are connected with resistor elements, and the resistor elements are connected with the sensing layer; the electrolyte mechanism is connected with the collection assembly, and the collection assembly is connected with the second detection assembly; according to the device, automatic detection of liquid leakage can be achieved, the detection assembly detects the liquid leakage condition and triggers the alarm assembly, an operator can be informed in time to conduct maintenance, and the liquid leakage detection and processing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow batteries, and particularly relates to a leakage detection and collection device for an energy storage system. Background Art

[0002] The flow battery energy storage system is a new type of safe electrochemical energy storage system, which has the advantages of safety, environmental protection, high efficiency, long service life, flexible design, etc., and is one of the first choices for large-scale energy storage applications; the all-vanadium flow battery consists of modules such as a stack, vanadium electrolytic storage tanks, circulation pumps, pipelines, charging and discharging, etc. The vanadium battery converts the energy stored in the electrolyte into electrical energy, which is achieved by exchanging electrons between two different types of vanadium ions separated by a diaphragm. Since this electrochemical reaction is reversible, the all-vanadium flow battery can be charged and discharged, and the electrical energy and chemical energy are converted into each other as the concentrations of the two vanadium ions change.

[0003] The stack is the core component of the flow battery energy storage system, which is fixed by stacking multiple single cells in the way of a filter press. In the prior art, the flow energy storage battery stack often has the problem of electrolyte leakage, which is likely to cause corrosion to the equipment and affect the normal operation and service life of the flow battery energy storage system. Summary of the Utility Model

[0004] Aiming at the above-mentioned deficiencies of the prior art, the utility model provides a leakage detection and collection device for an energy storage system, which solves the problems that the existing flow battery has leakage problems, causing equipment corrosion and affecting the normal operation and service life of the flow battery energy storage system.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] Provide a leakage detection and collection device for an energy storage system, including a control system, an alarm component connected to the control system, and an electrolyte mechanism; the electrolyte mechanism includes a plurality of stacks, a positive electrode storage tank and a negative electrode storage tank are arranged on both sides of the plurality of stacks, and the positive electrode storage tank and the negative electrode storage tank are connected to the plurality of stacks through a first connecting pipe, and a first detection component is arranged on the first connecting pipe;

[0007] The first detection component includes a leakage detection pipe, and the leakage detection pipe includes an upper detection pipe and a lower detection pipe. Both the upper detection pipe and the lower detection pipe include a base layer, a sensing layer and a protective layer arranged in sequence; conductive elements are electrically connected to both sides of the sensing layer, the conductive elements are connected to a resistance element, and the resistance element is connected to the sensing layer;

[0008] The electrolyte mechanism is connected to a collection component, and the collection component is connected to a second detection component.

[0009] The beneficial effects of adopting the above technical solution are as follows: Under the control of the control system, the automatic processing of the liquid leakage detection and collection device can be realized. When the first detection component and the second detection component detect liquid leakage, the control system will trigger the alarm component to notify the operator in time. This automatic processing flow greatly improves the efficiency of liquid leakage detection and treatment, avoids the influence on the normal operation of the flow battery energy storage system such as equipment corrosion caused by electrolyte leakage, and effectively extends the service life.

[0010] The first detection component in the liquid leakage detection and collection device is arranged on the first connecting pipe between the electrolyte storage tank and the stack. Both the upper detection pipe and the lower detection pipe are made of a base layer, a sensing layer and a protective layer. The base layer is in direct contact with the first connecting pipe and can serve as the support carrier for the sensing layer and the protective layer. The protective layer can protect the sensing layer from being affected by dust or moisture in the external environment when detecting, and the sensing layer can form a circuit in the upper detection pipe and the lower detection pipe by connecting with the conductive component and the resistance element; when there is no liquid leakage in the first connecting pipe, there is no current passing through the circuit and the voltage at the detection point is zero; when the sensing layer senses liquid leakage, the liquid leakage detection pipe will absorb the leaked electrolyte and has strong conductivity, making the whole circuit have current flow, and the voltage at the detection point will change, and this electrical signal will be output to the control system. When the control system receives the signal from the first detection component, it will trigger the alarm component to alarm, which is convenient for the operator to deal with the liquid leakage problem in time. Through the synergistic effect of the first detection component, the control system and the alarm component, the liquid leakage can be converted into an electrical signal for transmission and processing, so as to realize the remote monitoring and alarm of the device, and can accurately detect the liquid leakage position in the first connecting pipe, which is beneficial for the operator to quickly locate the liquid leakage point.

[0011] The second detection component in the liquid leakage detection and collection device can be used to detect the leakage conditions of the storage tank and the stack, and the collection component can be responsible for collecting the leaked electrolyte to avoid the device being corroded by the diffusion of the electrolyte.

[0012] Furthermore, both the upper detection pipe and the lower detection pipe are semi-circular rings. One side of the upper detection pipe and the lower detection pipe is connected by a movable component, and the other side is provided with a connecting plate, and the connecting plate is provided with fixing holes.

[0013] Furthermore, the movable component includes a bushing and a pin connected to the bushing, which is used to rotatably connect the upper detection pipe and the lower detection pipe.

[0014] The beneficial effects of adopting the above technical solutions are as follows: By setting the upper detection tube and the lower detection tube as semi-circular rings, it is beneficial for installation and disassembly. Moreover, the bushing and the pin in the movable component can achieve flexible rotation between the upper detection tube and the lower detection tube, ensuring that the liquid leakage detection tube fits tightly with the first connecting tube, which is beneficial for positioning the liquid leakage point. And through the fixing holes on the upper detection tube and the lower detection tube, fasteners such as bolts and nuts can be used to fix the detection tube on the connecting tube, improving the connection stability.

[0015] Further, the material of the base layer is polyester fiber, polyethylene, polytetrafluoroethylene, polyvinyl chloride, glass fiber reinforced plastic or carbon fiber reinforced plastic.

[0016] The beneficial effects of adopting the above technical solutions are as follows: Adopting a base layer made of polyester fiber, polyethylene, polytetrafluoroethylene, polyvinyl chloride, glass fiber reinforced plastic or carbon fiber reinforced plastic can effectively improve the corrosion resistance and service life of the base layer. And as the support carrier of the sensing layer and the protective layer, the base layer can reduce the impurity current in the circuit, ensuring the accuracy and stability of detection.

[0017] Further, the material of the sensing layer is a high molecular water-absorbing resin composite material or a nanomaterial.

[0018] The beneficial effects of adopting the above technical solutions are as follows: The high molecular water-absorbing resin composite material has extremely strong water absorption ability, can quickly absorb the leaked electrolyte in a very short time, improving the detection efficiency of the sensing layer. And the high molecular water-absorbing resin composite material can form a stable gel structure after absorbing water, keeping the water from easily flowing away, which helps to maintain the stability of the detection signal for a long time and reduce the incidence of false detection and missed detection. While the nanomaterial can significantly improve the sensitivity of the sensing layer to the electrolyte, improving the detection accuracy of liquid leakage. Through the sensing layer made of the high molecular water-absorbing resin composite material and the nanomaterial, the liquid leakage information can be quickly converted into an electrical signal and transmitted to the control system, greatly improving the liquid leakage detection and processing efficiency, and avoiding problems such as device corrosion caused by electrolyte leakage.

[0019] Further, the material of the protective layer is polytetrafluoroethylene, polyvinyl chloride, polyester fiber or polyurethane material.

[0020] The beneficial effects of adopting the above technical solutions are as follows: Adopting a protective layer made of polytetrafluoroethylene, polyvinyl chloride, polyester fiber, polyurethane material can effectively prevent external interference to the sensing layer, ensuring the accuracy of the liquid leakage detection signal, and can improve the wear resistance of the protective layer, protect the internal sensing layer, and improve the service life of the device.

[0021] Furthermore, the collection component includes a collection pool and a liquid receiving tray connected to the collection pool. The liquid receiving tray is arranged below the positive electrode liquid storage tank, the negative electrode liquid storage tank, the stack, and the first connecting pipe, and is connected to the collection pool through a connecting pipe.

[0022] The beneficial effects of adopting the above technical solution are as follows: When leakage occurs in the flow battery energy storage system, the liquid receiving tray can hold the leaked electrolyte, prevent it from further spreading and corroding the device or other components, improve the system safety, and extend the service life of the device; while the collection component can determine the leakage point through the collection situation of the leaked liquid, which is conducive to subsequent maintenance and troubleshooting.

[0023] Furthermore, the second detection component includes a leakage detection sensor, and the leakage detection sensor is arranged inside the liquid receiving tray.

[0024] The beneficial effects of adopting the above technical solution are as follows: The second detection component can be used to detect other leakage points except the area of the first connecting pipe, such as the liquid storage tank, the stack, etc., to realize the leakage monitoring of the whole system, improve the comprehensiveness of detection; and through the coordinated use of the second detection component and the first detection component, the accuracy of leakage detection can be effectively improved.

[0025] Furthermore, the alarm component includes an audible and visual alarm, and the audible and visual alarm is connected to the first detection component and the second detection component.

[0026] The beneficial effects of adopting the above technical solution are as follows: When the first detection component and the second detection component detect leakage, the leakage signal can be transmitted to the control system and the audible and visual alarm, and the audible and visual alarm sends out alarm information, effectively improving the efficiency and accuracy of the operator to handle the leakage problem.

[0027] Furthermore, the first connecting pipe includes a positive electrode inlet pipe, a positive electrode return pipe, a negative electrode inlet pipe, and a negative electrode return pipe; the positive electrode inlet pipe is arranged on one side at the lower end of the positive electrode liquid storage tank, the positive electrode return pipe is arranged on one side above the positive electrode liquid storage tank; the negative electrode inlet pipe is arranged on one side at the lower end of the negative electrode liquid storage tank, the negative electrode return pipe is arranged on one side above the negative electrode liquid storage tank; lifting pumps are arranged on the positive electrode inlet pipe, the positive electrode return pipe, the negative electrode inlet pipe, and the negative electrode return pipe.

[0028] The beneficial effects of adopting the above technical solution are as follows: By respectively arranging the positive electrode inlet pipe and the negative electrode inlet pipe at the lower ends of the positive and negative electrode liquid storage tanks, and respectively arranging the positive electrode return pipe and the negative electrode return pipe on one side above them, the electrolyte after the stack reaction can be re-transported to the liquid storage tank through the return pipe, forming an effective circulation of the electrolyte, and ensuring the uniformity and activity of the electrolyte in the whole energy storage system.

[0029] In summary, the beneficial effects of the leakage detection and collection device for the energy storage system provided by the present utility model are as follows:

[0030] (1)Under the control of the control system, the liquid leakage detection and collection device can achieve automatic detection of liquid leakage. When liquid leakage occurs, the detection component detects the liquid leakage situation and triggers the alarm component, which can promptly notify the operator for maintenance, greatly improving the efficiency of liquid leakage detection and treatment.

[0031] (2)Through the coordinated action of the first detection component, the control system, and the alarm component in the liquid leakage detection and collection device, the physical signal of liquid leakage is converted into an electrical signal for transmission and processing, realizing remote monitoring and alarming of the device, and improving the response efficiency and accuracy of the system.

[0032] (3)The first detection component in the liquid leakage detection and collection device consists of a base layer, a sensing layer, and a protective layer. When the sensing layer senses liquid leakage, the liquid leakage detection tube absorbs the leaked electrolyte and has strong conductivity, enabling current to flow through the entire circuit. The voltage at the detection point will change, and this electrical signal is output to the control system, thereby triggering the alarm component to alarm, realizing automatic processing; and through the coordinated action of the base layer, the sensing layer, and the protective layer, the first detection component can accurately locate the liquid leakage position in the first connecting pipe, facilitating the operator to quickly locate and repair.

[0033] (4)The second detection component in the liquid leakage detection and collection device can be used to detect other liquid leakage points except the area of the first connecting pipe, such as the liquid storage tank, the fuel cell stack, etc., realizing liquid leakage monitoring of the entire system and improving the comprehensiveness of detection; and through the coordinated use of the second detection component and the first detection component, the accuracy of liquid leakage detection can be effectively improved.

[0034] (5)The collection component in the liquid leakage detection and collection device can collect the leaked electrolyte, prevent the electrolyte from spreading and causing corrosion to the device, and extend the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of the present utility model;

[0036] Figure 2 is a top view of the present utility model;

[0037] Figure 3 is a partial structural diagram of the liquid leakage detection tube in the present utility model;

[0038] Figure 4 is a right view of the first detection component in the present utility model;

[0039] Figure 5 is a schematic diagram of the principle of the first detection component in the present utility model;

[0040] Among them, 1. Electrolyte mechanism; 11. Stack; 12. Positive liquid storage tank; 13. Negative liquid storage tank; 14. First connecting pipe; 141. Positive liquid inlet pipe; 142. Positive liquid return pipe; 143. Negative liquid inlet pipe; 144. Negative liquid return pipe; 145. Lift pump; 2. First detection component; 21. Leakage detection pipe; 211. Upper detection pipe; 212. Lower detection pipe; 213. Base layer; 214. Sensing layer; 215. Protective layer; 216. Conductive element; 217. Resistance element; 218. Connection plate; 219. Fixing hole; 2110. Bush; 2111. Pin; 3. Collection component; 31. Liquid receiving tray; 32. Second connecting pipe; 33. Collection pool. Detailed implementation manners

[0041] The following describes the detailed implementation manners of the present utility model to facilitate those skilled in the art of this technical field to understand the present utility model. However, it should be clear that the present utility model is not limited to the scope of the detailed implementation manners. For those ordinary skilled in the art of this technical field, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all utility models created using the concept of the present utility model are within the scope of protection.

[0042] As Figures 1 to 5 shown, the leakage detection and collection device for an energy storage system provided by the present utility model includes a control system, an alarm component connected to the control system, and an electrolyte mechanism 1; the alarm component includes an audible and visual alarm, and the audible and visual alarm is connected to a first detection component 2 and a second monitoring component; the electrolyte mechanism 1 includes a plurality of stacks 11, a positive liquid storage tank 12 and a negative liquid storage tank 13 are arranged on both sides of the plurality of stacks 11, and the positive liquid storage tank 12 and the negative liquid storage tank 13 are connected to the plurality of stacks 11 through a first connecting pipe 14. The first connecting pipe 14 includes a positive liquid inlet pipe 141, a positive liquid return pipe 142, a negative liquid inlet pipe 143 and a negative liquid return pipe 144; the positive liquid inlet pipe 141 is arranged on one side of the lower end of the positive liquid storage tank 12, and the positive liquid return pipe 142 is arranged on one side above the positive liquid storage tank 12; the negative liquid inlet pipe 143 is arranged on one side of the lower part of the negative liquid storage tank 13, and the negative liquid return pipe 144 is arranged on one side above the negative liquid storage tank 13; lift pumps 145 are arranged on the positive liquid inlet pipe 141, the positive liquid return pipe 142, the negative liquid inlet pipe 143 and the negative liquid return pipe 144; and a first detection component 2 is arranged on the first connecting pipe 14; the electrolyte mechanism 1 is connected to a collection component 3, the collection component 3 is connected to a second detection component, and the second detection component includes a leakage detection sensor, and its model is K7L-UD.

[0043] By arranging a positive electrode liquid storage tank 12 and a negative electrode liquid storage tank 13 on both sides of the stack 11, it is ensured that the electrolyte can be effectively transported to the stack 11 for charge and discharge reactions. A positive electrode liquid inlet pipe 141 and a negative electrode liquid inlet pipe 143 are respectively arranged at the lower ends of the positive and negative electrode liquid storage tanks 13, and a positive electrode liquid return pipe 142 and a negative electrode liquid return pipe 144 are respectively arranged on one side above them. The electrolyte after the reaction of the stack 11 can be re-transported to the liquid storage tank through the liquid return pipe, forming an effective circulation of the electrolyte, and ensuring the uniformity and activity of the electrolyte in the entire energy storage system. At the same time, the first detection component 2 arranged on the first connecting pipe 14 can form a conductive circuit by sensing the leaked electrolyte, so as to accurately detect the liquid leakage situation. When it is detected that the first connecting pipe 14 leaks, it can quickly convert the physical perception into an electrical signal and transmit it to the control system, and control the sound and light alarm to give an alarm, reminding the operator to deal with it in time; while the second detection component can be used to detect other potential liquid leakage points except the first connecting pipe 14, such as the liquid storage tank, the stack 11, etc., realizing the comprehensive monitoring of the entire energy storage system; through the collaborative use of the first detection component 2 and the second detection component, the accuracy and reliability of liquid leakage detection can be further improved; under the control of the control system, the automatic processing of the liquid leakage detection and collection device can be realized. When the first detection component 2 and the second detection component detect liquid leakage, the control system will trigger the alarm component and notify the operator in time. This automatic processing process greatly improves the liquid leakage detection and processing efficiency, avoids the influence on the normal operation of the flow battery energy storage system such as equipment corrosion caused by electrolyte leakage, and effectively extends the service life.

[0044] Such as Figure 3 And Figure 5As shown in the figure, the first detection component 2 includes a liquid leakage detection tube 21. The liquid leakage detection tube 21 includes an upper detection tube 211 and a lower detection tube 212. Both the upper detection tube 211 and the lower detection tube 212 include a base layer 213, a sensing layer 214, and a protective layer 215 arranged in sequence. Conductive elements 216 are electrically connected to both sides of the sensing layer 214. The conductive elements 216 are connected to a resistance element 217, and the resistance element 217 is connected to the sensing layer 214. The first detection component 2 in the liquid leakage detection and collection device is arranged on the first connecting pipe 14 between the electrolyte storage tank and the stack 11. Both the upper detection tube 211 and the lower detection tube 212 are made of the base layer 213, the sensing layer 214, and the protective layer 215. The base layer 213 is in direct contact with the first connecting pipe 14 and can serve as a support carrier for the sensing layer 214 and the protective layer 215. The protective layer 215 can protect the sensing layer 214 from being affected by dust, moisture, etc. in the external environment during detection. The sensing layer 214 can form a loop in the upper detection tube 211 and the lower detection tube 212 by being connected to the conductive component and the resistance element 217. When there is no liquid leakage in the first connecting pipe 14, the material of the sensing layer 214 is in a dry state, presenting a high-resistance state, there is no current in the loop, and the voltage at the detection point is zero. When the sensing layer 214 senses liquid leakage, the sensing layer 214 will absorb the leaked electrolyte and have strong conductivity, causing current to flow through the entire loop, changing the voltage at the detection point, and outputting this electrical signal to the control system. When the control system receives the signal from the first detection component 2, it will trigger the alarm component to alarm, facilitating the operator to deal with the liquid leakage problem in a timely manner. Through the coordinated action of the first detection component 2, the control system, and the alarm component, the liquid leakage can be converted into an electrical signal for transmission and processing, thereby realizing the remote monitoring and alarm of the device, and accurately detecting the liquid leakage position in the first connecting pipe 14, which is beneficial for the operator to quickly locate the liquid leakage point.

[0045] As Figure 4 shown, both the upper detection tube 211 and the lower detection tube 212 are semi-circular rings. One side of the upper detection tube 211 is connected to the lower detection tube 212 through a movable component, and a connecting plate 218 is provided on the other side. Fixing holes 219 are provided on the connecting plate 218. The movable component includes a bushing 2110 and a pin 2111 for rotatably connecting the upper detection tube 211 and the lower detection tube 212. By setting the upper detection tube 211 and the lower detection tube 212 as semi-circular rings, it is beneficial for installation and disassembly. The bushing 2110 and the pin 2111 in the movable component can achieve flexible rotation between the upper detection tube 211 and the lower detection tube 212, ensuring that the liquid leakage detection tube 21 fits tightly with the first connecting pipe 14, which is beneficial for locating the liquid leakage point. And through the fixing holes 219 on the upper detection tube 211 and the lower detection tube 212, fasteners such as bolts and nuts can be used to fix the detection tube to the connecting pipe, improving the connection stability.

[0046] In the embodiment of the present utility model, the material of the base layer 213 is polyester fiber, polyethylene, polytetrafluoroethylene, polyvinyl chloride, glass fiber reinforced plastic or carbon fiber reinforced plastic; by using the base layer 213 made of polyester fiber, polyethylene, polytetrafluoroethylene, polyvinyl chloride, glass fiber reinforced plastic or carbon fiber reinforced plastic, the corrosion resistance and service life of the base layer 213 can be effectively improved, and as the support carrier of the sensing layer 214 and the protection layer 215, the base layer 213 can reduce the impurity current in the circuit and ensure the accuracy and stability of detection.

[0047] The material of the sensing layer 214 is a superabsorbent resin composite material or a nanomaterial; the superabsorbent resin composite material has extremely strong water absorption ability, can quickly absorb the leaked electrolyte in a very short time, improves the detection efficiency of the sensing layer 214, and the superabsorbent resin composite material can form a stable gel structure after absorbing water, keeping the water from easily flowing away, which helps to maintain the stability of the detection signal for a long time and reduce the occurrence rate of false detection and missed detection; while the nanomaterial can significantly improve the sensitivity of the sensing layer 214 to the electrolyte and improve the detection accuracy of liquid leakage; through the sensing layer 214 made of the superabsorbent resin composite material and the nanomaterial, the liquid leakage information can be quickly converted into an electrical signal and transmitted to the control system, greatly improving the liquid leakage detection and processing efficiency and avoiding problems such as device corrosion caused by electrolyte leakage.

[0048] The material of the protection layer 215 is polytetrafluoroethylene, polyvinyl chloride, polyester fiber or polyurethane material; by using the protection layer 215 made of polytetrafluoroethylene, polyvinyl chloride, polyester fiber, polyurethane material, it can effectively prevent external points from interfering with the sensing layer 214, ensure the accuracy of the liquid leakage detection signal, and can improve the wear resistance of the protection layer 215, protect the internal sensing layer 214, and improve the service life of the device.

[0049] As Figure 2 shown, the collection assembly 3 includes a collection pool 33 and a liquid receiving tray 31 connected to the collection pool 33. The liquid receiving tray 31 is arranged below the positive electrode liquid storage tank 12, the negative electrode liquid storage tank 13, the stack 11 and the first connecting pipe 14. The liquid receiving tray 31 is connected to the collection pool 33 through a connecting pipe; when the liquid flow battery energy storage system leaks liquid, the liquid receiving tray 31 can receive the leaked electrolyte, prevent it from further spreading and corroding the device or other components, improve the system safety, and extend the service life of the device; while the collection assembly 3 can determine the liquid leakage occurrence point according to the collection situation of the leaked liquid, which is beneficial to subsequent maintenance and fault troubleshooting.

[0050] In summary, under the control of the control system, the liquid leakage detection and collection device for the energy storage system provided by the present utility model can achieve automatic detection of liquid leakage. When liquid leakage occurs, the detection component detects the liquid leakage situation and triggers the alarm component, which can promptly notify the operator for maintenance, greatly improving the efficiency of liquid leakage detection and treatment.

Claims

1. A liquid leakage detection and collection device for an energy storage system, characterized in that: It includes a control system, an alarm component connected to the control system, and an electrolyte mechanism (1); the electrolyte mechanism (1) includes a plurality of stacks (11), and a positive electrode liquid storage tank (12) and a negative electrode liquid storage tank (13) are arranged on both sides of the plurality of stacks (11). The positive electrode liquid storage tank (12) and the negative electrode liquid storage tank (13) are connected to the plurality of stacks (11) through a first connecting pipe (14), and a first detection component (2) is arranged on the first connecting pipe (14). The first detection component (2) includes a liquid leakage detection pipe (21), and the liquid leakage detection pipe (21) includes an upper detection pipe (211) and a lower detection pipe (212). Both the upper detection pipe (211) and the lower detection pipe (212) include a base layer (213), a sensing layer (214), and a protective layer (215) arranged in sequence; conductive elements (216) are circuit-connected to both sides of the sensing layer (214), the conductive elements (216) are connected to a resistance element (217), and the resistance element (217) is connected to the sensing layer (214). The electrolyte mechanism (1) is connected to a collection component (3), and the collection component (3) is connected to a second detection component.

2. The liquid leakage detection and collection device for an energy storage system according to claim 1, characterized in that: Both the upper detection pipe (211) and the lower detection pipe (212) are semi-circular rings. One side of the upper detection pipe (211) and the lower detection pipe (212) is connected through a movable component, and a connecting plate (218) is arranged on the other side. A fixing hole (219) is arranged on the connecting plate (218).

3. The liquid leakage detection and collection device for an energy storage system according to claim 2, characterized in that: The movable component includes a bushing (2110) and a pin (2111) connected to the bushing (2110), and is used for rotatably connecting the upper detection pipe (211) and the lower detection pipe (212).

4. The liquid leakage detection and collection device for an energy storage system according to claim 1, characterized in that: The material of the base layer (213) is polyester fiber, polyethylene, polytetrafluoroethylene, polyvinyl chloride, glass fiber reinforced plastic or carbon fiber reinforced plastic.

5. The liquid leakage detection and collection device for an energy storage system according to claim 1, characterized in that: The material of the sensing layer (214) is a superabsorbent resin composite material or a nanomaterial.

6. The liquid leakage detection and collection device for an energy storage system according to claim 1, wherein: The material of the protective layer (215) is polytetrafluoroethylene, polyvinyl chloride, polyester fiber or polyurethane material.

7. The liquid leakage detection and collection device for an energy storage system according to claim 1, characterized in that: The collection component (3) includes a collection pool (33) and a liquid receiving tray (31) connected to the collection pool (33). The liquid receiving tray (31) is arranged below the positive electrode liquid storage tank (12), the negative electrode liquid storage tank (13), the stack (11), and the first connecting pipe (14). The liquid receiving tray (31) and the collection pool (33) are connected through a second connecting pipe (32).

8. The liquid leakage detection and collection device for an energy storage system according to claim 1, characterized in that: The second detection component includes a liquid leakage detection sensor, and the liquid leakage detection sensor is arranged inside the liquid receiving tray (31).

9. The liquid leakage detection and collection device for an energy storage system according to claim 1, characterized in that: The alarm component includes a sound and light alarm, and the sound and light alarm is connected to the first detection component (2) and the second detection component.

10. The liquid leakage detection and collection device for an energy storage system according to claim 1, characterized in that: The first connecting pipe (14) includes a positive liquid inlet pipe (141), a positive liquid return pipe (142), a negative liquid inlet pipe (143), and a negative liquid return pipe (144); the positive liquid inlet pipe (141) is arranged on one side of the lower end of the positive liquid storage tank (12), and the positive liquid return pipe (142) is arranged on one side above the positive liquid storage tank (12); the negative liquid inlet pipe (143) is arranged on one side of the lower part of the negative liquid storage tank (13), and the negative liquid return pipe (144) is arranged on one side above the negative liquid storage tank (13); lift pumps (145) are arranged on the positive liquid inlet pipe (141), the positive liquid return pipe (142), the negative liquid inlet pipe (143), and the negative liquid return pipe (144).

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