Electrolyte leakage detection system and battery production system

Abstract

The utility model relates to the technical field of battery processing, and relates to an electrolyte leakage detection system and a battery production system. The electrolyte leakage detection system comprises a liquid sensing piece and a monitoring device, the liquid sensing piece is arranged in the containing space, at least part of the liquid sensing piece surrounds a liquid related device in the containing space, and the liquid sensing piece is configured to be capable of detecting electrolyte leaked by the liquid related device and outputting a control signal; the monitoring device is in communication connection with the liquid sensing part, and the monitoring device is configured to be capable of receiving a control signal of the liquid sensing part so as to output a warning signal. According to the electrolyte leakage detection system provided by the embodiment of the invention, the electrolyte can be in contact with the liquid sensing piece and can be detected in time at the initial leakage stage by arranging the liquid sensing piece which at least partially surrounds the liquid relating device in the accommodating space.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, and in particular to an electrolyte leakage detection system and a battery production system. Background Technology

[0002] Currently, monitoring of electrolyte leaks in lithium battery production mainly focuses on testing the battery's seal. Existing leak detection devices mostly employ gas detection principles, using changes in the concentration of flammable gases generated by electrolyte evaporation to provide early warnings. However, this method has significant drawbacks: after an electrolyte leaks, it must undergo evaporation and diffusion before being detected by the gas detector. This results in poor detection timeliness and significant dependence on ambient temperature and humidity, making it difficult to respond promptly in the early stages of a leak. Utility Model Content

[0003] This application provides an electrolyte leakage detection system and a battery production system to solve the problem that the detection effect is not good when using gas detection method for electrolyte leakage in the prior art.

[0004] The first aspect of this application provides an electrolyte leakage detection system, comprising:

[0005] A liquid sensor, disposed within a receiving space and at least partially surrounding a liquid-contacting device within the receiving space, is configured to output a control signal upon contact with leaked electrolyte from the liquid-contacting device; and

[0006] A monitoring device is communicatively connected to the liquid sensor, and the monitoring device is configured to receive the control signal from the liquid sensor in order to output a warning signal.

[0007] In one possible implementation, the liquid sensor includes a container and a sensing line, the sensing line being communicatively connected to the monitoring device, and the sensing line being at least partially disposed within the container, the container being disposed within the container space.

[0008] In one possible implementation, the container has a connecting portion, the sensing circuit is located inside the container, and the electrolyte can enter the connecting portion and contact the sensing circuit.

[0009] In one possible implementation, the connecting portion includes at least one of a connecting hole and a connecting groove.

[0010] In one possible implementation, the number of the connecting portions is multiple, and the multiple connecting portions are spaced apart along the length direction of the liquid sensing element.

[0011] In one possible implementation, the sensing circuit includes a first sensing line and a second sensing line, which are respectively communicatively connected to the monitoring device, and the first sensing line and the second sensing line are configured to be in contact with the electrolyte.

[0012] In one possible implementation, the first and second sensing lines are used to contact the electrolyte and short-circuit or form a closed loop.

[0013] In one possible implementation, the sensing circuit further includes a first signal line and a second signal line, wherein the first signal line is connected to the monitoring device and the first sensing line respectively, and the second signal line is connected to the monitoring device and the second sensing line respectively; wherein the first sensing line and the second sensing line are used to contact and short-circuit with the electrolyte.

[0014] In one possible implementation, the liquid sensing elements are connected end to end and enclose a closed detection area, and the liquid-contacting device is disposed within the detection area.

[0015] In one possible implementation, the monitoring device includes a controller and an alert component, the alert component being communicatively connected to the controller and used to issue an alert signal, the controller being communicatively connected to both the liquid sensor and the alert component, and the controller being configured to receive the control signal and control the alert component to issue the alert signal.

[0016] In one possible implementation, the warning component includes an audible and visual alarm communicatively connected to the controller, and the audible and visual alarm is used to emit at least one of an audible warning signal and a visual warning signal.

[0017] And / or the warning component includes a power failure device electrically connected to the liquid-contacting device and used to control the power failure of the liquid-contacting device.

[0018] A second aspect of this application provides a battery manufacturing system, comprising:

[0019] Liquid-contacting devices, located within a containment space; and

[0020] As described in any of the above-mentioned electrolyte leakage detection systems, the liquid sensing element of the electrolyte leakage detection system is disposed within the accommodating space, and the liquid sensing element of the electrolyte leakage detection system is configured to output a control signal when it comes into contact with electrolyte leaking from the liquid-contacting device.

[0021] In one possible implementation, the liquid-contacting device includes a liquid reservoir disposed within the receiving space, and a liquid sensor disposed within the receiving space; the liquid sensor is disposed at least partially surrounding the liquid reservoir on the orthographic projection of the bottom surface of the receiving space.

[0022] In one possible implementation, the liquid storage device includes a first liquid storage tank and a second liquid storage tank, which are spaced apart. The number of liquid sensors is at least two, with the two liquid sensors respectively surrounding the first liquid storage tank and the second liquid storage tank.

[0023] In one possible implementation, the liquid-contacting device includes a liquid injection device, with the liquid sensing element at least partially surrounding the liquid injection device.

[0024] In one possible implementation, the accommodating space includes an injection position and an installation area spaced apart, the injection device is located in the installation area, and at least one of the injection position and the installation area is surrounded by the liquid sensor.

[0025] In one possible implementation, the liquid-contacting device further includes a liquid delivery conduit connected to the liquid injection device and used to deliver electrolyte toward the liquid injection device, wherein the liquid sensing element is disposed at least partially around the connection between the liquid delivery conduit and the liquid injection device.

[0026] In one possible implementation, the connection is located at the top of the liquid injection device, wherein at least one of the liquid sensing elements is located at the top of the liquid injection device.

[0027] In one possible implementation, the containment space includes a storage warehouse and / or a battery production workshop.

[0028] Implementing the embodiments of this application has the following beneficial effects:

[0029] In the electrolyte leakage detection system of this embodiment, by setting up a liquid sensor that at least partially surrounds the liquid-contacting device within the containment space, the electrolyte can come into contact with the liquid sensor and be detected in a timely manner at the initial stage of leakage. This effectively shortens the response delay introduced by the traditional gas evaporation path, realizes timely triggering of alarms for leakage events, and ensures the safety of the working environment. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the principle of the liquid sensing element in an embodiment of this utility model is shown;

[0032] Figure 2 A schematic diagram of the liquid sensing element in an embodiment of this utility model is shown;

[0033] Figure 3 A schematic diagram of the liquid sensing element in another embodiment of this utility model is shown;

[0034] Figure 4 A schematic diagram of the layout of a battery production system in one embodiment of the present invention is shown;

[0035] Figure 5 A schematic diagram of the layout of a battery production system in one embodiment of the present invention is shown;

[0036] Figure 6 A schematic diagram of the layout of a battery production system in one embodiment of the present invention is shown;

[0037] Figure 7 A schematic diagram of the layout of a battery production system in one embodiment of the present invention is shown;

[0038] Figure 8 A schematic diagram of the layout of a battery production system in one embodiment of the present invention is shown;

[0039] Figure 9 A schematic diagram of the electrolyte leakage detection system in an embodiment of this utility model is shown.

[0040] Figure label:

[0041] 10-Electrolyte leakage detection system; 100-Liquid sensing element; 110-Receiving element; 111-Connecting part; 120-Sensing line; 121-First sensing line; 122-Second sensing line; 123-First signal line; 124-Second signal line; 200-Monitoring device; 210-Controller; 220-Warning component; 20-Receiving space; 21-Injection position; 22-Installation area; 30-Liquid contact device; 31-Liquid storage element; 3101-First storage tank; 3102-Second storage tank; 32-Injection equipment; 40-Droplet. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Currently, monitoring of electrolyte leaks in lithium battery production primarily focuses on testing the battery's seal. Existing leak detection devices mostly employ gas detection principles, using changes in the concentration of flammable gases generated by electrolyte evaporation to provide early warnings. However, this traditional method has significant drawbacks. When electrolyte leaks, it must undergo a process of evaporation and diffusion before being detected by the gas detector. This evaporation and diffusion process is time-consuming, significantly reducing the timeliness of detection.

[0044] For example, in a large lithium battery production workshop, if electrolyte leaks in a corner, it may take several minutes or even longer for the gas to diffuse from the leak point to the detector's location, during which time the leak may continue to worsen. Moreover, environmental temperature and humidity significantly affect gas diffusion. In high-temperature, high-humidity environments, gas molecules move more actively, significantly accelerating diffusion and potentially causing the detector to issue an alarm prematurely, resulting in a false alarm. Conversely, in low-temperature, low-humidity environments, gas molecule activity decreases, and diffusion is slow, meaning the detector may only detect the leak long after it has occurred, missing the optimal response time.

[0045] To solve the above technical problems, please refer to Figures 1 to 9 As shown, this embodiment of the present invention provides an electrolyte leakage detection system 10, which includes a liquid sensor 100 and a monitoring device 200: the liquid sensor 100 is disposed within a receiving space 20, and the liquid sensor 100 at least partially surrounds the liquid-contacting device 30 within the receiving space 20; the liquid sensor 100 is configured to output a control signal when it comes into contact with leaked electrolyte from the liquid-contacting device 30; the monitoring device 200 is communicatively connected to the liquid sensor 100, and the monitoring device 200 is configured to receive the control signal from the liquid sensor 100 to output a warning signal.

[0046] In the electrolyte leakage detection system 10 described in this embodiment, by setting a liquid sensor 100 that at least partially surrounds the liquid-contacting device 30 within the containment space 20, the electrolyte can contact the liquid sensor 100 and be detected in a timely manner at the initial stage of leakage. Compared with traditional gas detection schemes, this avoids the lengthy process of electrolyte leakage requiring evaporation and diffusion before detection, effectively shortening the response delay introduced by the gas evaporation path in traditional gas detection schemes, and enabling timely triggering of alarms for leakage events to ensure the safety of the working environment.

[0047] Compared to traditional gas detection solutions, the electrolyte leakage detection system 10 in this embodiment, with its physical contact detection mechanism, successfully avoids the interference of ambient temperature and humidity on the gas diffusion process, greatly improving detection accuracy and efficiency. Regardless of whether the external environment is high temperature and high humidity or low temperature and low humidity, as long as there is electrolyte leakage and it comes into contact with the liquid sensing element 100, it can be accurately detected.

[0048] Meanwhile, the surrounding arrangement of the liquid sensors 100 constructs a multi-dimensional coverage detection system. Specifically, the number of liquid sensors 100 can be a complete, continuous surrounding whole, or it can be a combination of two or more parts surrounding the liquid-contaminating device 30. The specific number can be flexibly determined according to the actual application scenario and needs, and there is no absolute limitation here. When multiple parts are used to surround the device, each part can accurately capture the electrolyte wetting state from different directions. For example, if a leak occurs at a certain point on the top of the liquid-contaminating device 30, even if the liquid sensors 100 at the bottom or side do not detect it, the liquid sensor 100 located at the top leak location can quickly sense it and provide timely feedback, thereby completely eliminating the blind spot problem of traditional single-direction detection. The close signal linkage mechanism between the monitoring device 200 and the liquid sensors 100 effectively ensures that the monitoring device 200 can acquire detection data in real time and issue warning signals in a timely manner, providing unprecedented reliable protection for electrolyte leakage monitoring in the lithium battery production process.

[0049] Specifically, the containment space 20, serving as the space for installing the liquid-contaminating device 30, not only facilitates the filling of the device but also acts as a liquid storage area, enabling it to play a crucial role in the battery production process. This design allows for proper management and maintenance of the electrolyte within the liquid-contaminating device 30, thereby ensuring the normal operation of battery processing. It should be noted that the design and function of the containment space 20 are not limited to the above description. With the development of production technology and changes in practical application scenarios, the containment space 20 can be continuously optimized and improved according to future needs, ensuring that the battery production process maintains a highly efficient operating state.

[0050] In one embodiment, the liquid sensing elements 100 are connected end to end and enclose a closed detection area, and the liquid-contacting device 30 is disposed within the detection area.

[0051] From the perspective of detection sensitivity, the closed detection area can completely surround the liquid-contaminating device 30 without any blind spots. When electrolyte leakage occurs at any part of the liquid-contaminating device 30, the leaking electrolyte does not need to travel a long distance to immediately contact the liquid sensing element 100. Taking the liquid-contaminating device 30 as an electrolyte delivery pipeline as an example, if a leak occurs at any point on the pipeline, the leaking electrolyte will directly drip or flow onto the liquid sensing element 100 surrounding it, greatly shortening the detection response time and triggering the detection mechanism at the very first moment of leakage.

[0052] In terms of coverage, the closed detection area completely surrounds the liquid-contaminated device 30, eliminating the detection blind spots caused by discontinuous detection areas in traditional detection methods. In this embodiment, the liquid sensor 100 can accurately detect leaks whether they occur at the top, bottom, or side of the liquid-contaminated device 30, ensuring that the entire liquid-contaminated device 30 is under close monitoring.

[0053] In terms of signal output stability, since the liquid sensing element 100 forms a closed loop, when the electrolyte comes into contact with any part of it, the generated electrical signals and other control signals can be stably transmitted within this closed loop. Compared to the signal attenuation or interference problems that may occur in the non-closed state, the closed loop can transmit the signal to the monitoring device 200 more stably, ensuring that the monitoring device 200 can accurately receive the leakage signal and then output a warning signal in a timely manner, providing a solid and reliable guarantee for electrolyte leakage monitoring in the lithium battery production process.

[0054] Of course, in some embodiments, the liquid sensor 100 can be designed as a non-closed shape, forming a detection area with a gap. This design is particularly suitable for situations where passage or conveying operations need to be considered, such as areas on lithium battery production lines where mobile equipment or materials need to pass through. By providing such a gap, not only can normal conveying operations be ensured to remain unaffected, but the liquid sensor 100 can also be protected from physical damage.

[0055] Specifically, in these embodiments, the liquid sensor 100 is arranged circumferentially around a portion of the liquid-contaminating device 30, rather than being completely enclosed. The position and size of the notch can be flexibly adjusted according to actual operational needs. For example, in the design of an automated production line, it may be necessary to reserve specific channels for passage of, for example, automated guided vehicles or other transport vehicles. In this case, the position of the notch in the liquid sensor 100 should match these channels to ensure smooth and unobstructed material flow.

[0056] Furthermore, to further enhance the system's reliability and safety, additional leak detection measures can be implemented at the gaps. For example, additional sensors can be installed or ground materials can be modified to ensure that electrolyte leaks are detected promptly, even in the presence of gaps. This not only maintains the production line's operational efficiency but also guarantees a safe working environment.

[0057] Specifically, see Figure 1 and Figure 2 As shown, the liquid sensor 100 includes a receiving element 110 and a sensing line 120. The sensing line 120 is communicatively connected to the monitoring device 200, and the sensing line 120 is at least partially disposed within the receiving element 110, which is disposed within the receiving space 20.

[0058] In this embodiment, the housing 110 not only serves as the mounting carrier for the sensing circuit 120, but also provides necessary physical protection to prevent the sensing circuit 120 from being affected by external factors such as mechanical impact and chemical corrosion. The housing 110 can be made of corrosion-resistant materials, such as polytetrafluoroethylene, polyvinyl chloride, or other suitable engineering plastics. These materials can not only effectively resist the erosion of the electrolyte, but also provide a certain mechanical strength to ensure its structural stability during use.

[0059] When the electrolyte droplet 40 falls onto the liquid sensing element 100, it quickly comes into contact with the sensing circuit 120. The sensing circuit 120 is designed to change its state from open to closed upon contact with a conductive liquid. This change is detected by the monitoring device 200, triggering a corresponding warning signal. Specifically, when the droplet 40 contacts the sensing circuit 120, the conductivity of the electrolyte causes the previously open circuit to close, resulting in a change in current. The monitoring device 200 identifies the occurrence of a leakage event by monitoring this current change and immediately issues an alarm to remind operators to take appropriate measures.

[0060] Specifically, the design of the liquid sensor 100 provides a flexible installation method, thereby improving the monitoring efficiency and reliability of the entire electrolyte leakage detection system 10. Specifically, the liquid sensor 100 can be attached to the ground of the containing space 20. In this way, when a droplet 40 falls to the ground under gravity and comes into contact with the liquid sensor 100, the liquid sensor 100 will immediately sense the presence of liquid and output a control signal. This design enables a timely response at the first moment of leakage, thereby reducing potential risks and ensuring production safety.

[0061] Furthermore, the installation location of the liquid sensor 100 is not limited to the ground; it can also be installed on the side surface of the receiving space 20. This configuration is particularly suitable when the liquid-contacting device 30 is installed on the side surface of the receiving space 20, for example, in the event of a leak in a pipe or other fluid delivery component, the liquid sensor 100 can effectively detect liquid droplets 40 falling on the side surface. This flexible installation method ensures that the liquid sensor 100 can function in a variety of situations, enabling rapid and accurate detection whether sensing liquid from below or from the side.

[0062] Furthermore, to improve the system's sensitivity and reliability, the design of the sensing line 120 can consider different layout methods, such as ring, mesh, or strip. Different layout methods are suitable for different application scenarios, and the most suitable solution can be selected according to actual needs. For example, in application scenarios requiring high sensitivity, a denser mesh layout can be chosen; while in scenarios requiring faster response speed, a strip layout may be preferred.

[0063] In one embodiment, the receiving member 110 has a connecting portion 111, the sensing circuit 120 is disposed inside the receiving member 110, and the electrolyte can enter the connecting portion 111 and disconnect from the sensing circuit 120.

[0064] By providing a connecting portion 111 through the container 110, the liquid droplet 40 can directly enter the container 110 and make contact with the sensing circuit 120 via this connecting portion. The design of this connecting portion 111 takes into account the possibility of different sizes and shapes, such as circular, elliptical, or rectangular, to adapt to different application scenarios. This ensures both rapid response to electrolyte leakage and sufficient physical protection.

[0065] In other embodiments, the sensing line 120 may also be secured to the housing 110 and partially exposed to allow for more rapid contact between the sensing line 120 and the droplet 40. While this improves reaction speed, it is more suitable for applications with lower risk of damage due to the reduced coverage of the sensing line 120 by the housing 110. For example, in some laboratory environments, this design can improve detection efficiency without compromising safety due to the relatively enclosed and well-controlled conditions. However, in industrial production environments or other locations where there may be a higher risk of mechanical damage, a fully encapsulated design is recommended to provide better protection.

[0066] Furthermore, for applications requiring higher sensitivity and faster response times, this can be achieved by optimizing the position and layout of the sensing lines 120. For example, the sensing lines 120 can be designed to be closer to the connection portion 111, or the number of sensing lines 120 can be increased. Specifically, the number of sensing lines 120 can be one, two, or more, thereby enhancing the overall performance of the system. This not only speeds up liquid detection but also improves detection accuracy and reduces false alarm rates.

[0067] Specifically, the connection part 111 includes at least one of a connection hole and a connection groove. This design not only provides a channel for electrolyte to enter the interior of the container 110, but also ensures sufficient mechanical strength and protective performance. When a large amount of electrolyte leaks and comes into contact with the sensing wires, the liquid seeps into the interior through the surface holes, and the two sensing wire cores of a set length become conductive when they come into contact with the liquid. The controller receives the signal and issues an alarm.

[0068] Furthermore, there are multiple connecting portions 111, and the multiple connecting portions 111 are spaced apart along the length direction of the liquid sensing element 100.

[0069] In this embodiment, by increasing the number of connecting parts 111, the liquid sensor 100 can identify and receive the presence of liquid over a wider range, thereby significantly improving its sensing range. In other words, multiple connecting parts 111 can greatly enhance the sensitivity and response capability of the liquid sensor 100 to liquid leaks. This means that even if liquid appears at different locations within a large area, it can be detected promptly through at least one connecting part 111, thereby achieving higher leakage detection efficiency.

[0070] Furthermore, the spacing between the multiple connecting parts 111 can be adjusted to further optimize the sensing accuracy of the liquid sensor 100. By rationally designing the distance between the connecting parts 111, for example, setting them to a certain interval, such as 5mm, 10mm, or 15mm, the sensing performance can be adjusted according to specific application requirements. While increasing the sensing range, this spacing adjustment can also improve the detection accuracy of the system, enabling the liquid sensor 100 to accurately distinguish and quickly respond to liquid droplets at different locations, thereby reducing the risk of false alarms and missed alarms. If the spacing between the connecting parts 111 is too large, it may lead to insufficient sensitivity to liquid, making it difficult to accurately detect in the edge areas where liquid gradually distributes. Therefore, a reasonable spacing design is particularly important.

[0071] See Figure 2As shown, in one embodiment, the liquid sensor 100 can detect leakage; specifically, the sensing line 120 includes a first sensing line 121 and a second sensing line 122, the first sensing line 121 and the second sensing line 122 are respectively communicatively connected to the monitoring device 200, and the first sensing line 121 and the second sensing line 122 are configured to be able to contact the electrolyte and short-circuit or form a closed loop.

[0072] This design is based on the principle that electrolytes are conductive. When the first sensing line 121 and the second sensing line 122 are not in contact with the electrolyte, they are in an open circuit state and do not form a current path. However, once a leak occurs, the electrolyte comes into contact with these two sensing lines. Due to the conductivity of the electrolyte, a closed circuit is formed between the first sensing line 121 and the second sensing line 122, leading to current flow. At this time, the monitoring device 200 detects this change to identify the occurrence of a leak and takes necessary measures, such as issuing an alarm or cutting off the power. In some embodiments, the first sensing line 121 and the second sensing line 122 can also form a closed loop with the monitoring device 200 in the reset state. When the droplet 40 comes into contact with the first sensing line 121 and the second sensing line 122, the conductivity of water causes a short circuit in the first sensing line 121 and the second sensing line 122, causing a change in the internal resistance value of the loop. At this time, the monitoring device 200 triggers an alarm based on the change in resistance value.

[0073] To improve the reliability and accuracy of detection, the first sensing line 121 and the second sensing line 122 can be made of different materials or have different structural designs. For example, a highly conductive metal material can be used to make the sensing lines to ensure that a significant change in electrical signal is generated even when there is a trace amount of electrolyte in contact. In addition, the length, thickness, and other parameters of the sensing lines can be adjusted according to the actual application scenario to adapt to different detection requirements.

[0074] It is worth noting that in certain specific application scenarios, the sensitivity of the sensing wire to external environmental factors (such as humidity and temperature) may need to be considered. To reduce the possibility of false alarms, the stability and reliability of the system can be improved by optimizing the design of the sensing wire or adding auxiliary judgment mechanisms. For example, temperature compensation components can be added to the sensing circuit, or a network of multiple sensing wires can be used to comprehensively determine whether a leak has occurred.

[0075] It should also be noted that in some embodiments, the connecting portion 111 can penetrate the receiving member 110. When leakage occurs, the droplet 40 can enter the receiving member 110 through the connecting portion 111, at which time the first sensing line 121 and the second sensing line 122 can contact the droplet 40. In other embodiments, the connecting portion 111 can penetrate the receiving member 110 and be correspondingly arranged with the first sensing line 121 and the second sensing line 122. When leakage occurs, after the droplet 40 enters the connecting portion 111, the first sensing line 121 and the second sensing line 122 can also contact the droplet 40. In this embodiment, one of the connecting portions 111 can be simultaneously corresponding to the first sensing line 121 and the second sensing line 122, or two of the connecting portions 111 can be respectively corresponding to the first sensing line 121 and the second sensing line 122.

[0076] See Figure 3 As shown, in another embodiment, the liquid sensor 100 can detect and locate leaks; specifically, the sensing line 120 further includes a first signal line 123 and a second signal line 124. The first signal line 123 is connected to the monitoring device 200 and the first sensing line 121, respectively, and the second signal line 124 is connected to the monitoring device 200 and the second sensing line 122, respectively; wherein, the first sensing line 121 and the second sensing line 122 are used to contact the electrolyte and short-circuit.

[0077] In this embodiment, the first signal line 123, the first sensing line 121, and the monitoring device 200 form a first closed loop, and the second signal line 124, the second sensing line 122, and the monitoring device 200 form a second closed loop. The first sensing line 121 and the second sensing line 122 are used to contact the droplet 40, and are genuine leakage sensing lines with uniformly distributed resistance values. When a leak occurs, the droplet 40 will contact the first sensing line 121 and the second sensing line 122. At this time, the two segments of the first sensing line 121 separated by the droplet 40 have different resistance ratios. The monitoring device 200 applies voltage to the two closed loops, and after receiving feedback voltages through the first signal line 123 and the second signal line 124, the location of the leakage can be calculated using Ohm's law.

[0078] It should also be noted that in some embodiments, the connecting portion 111 can penetrate the receiving member 110. When leakage occurs, the droplet 40 can enter the receiving member 110 through the connecting portion 111, at which time the first sensing line 121 and the second sensing line 122 can come into contact with the droplet 40. In other embodiments, the connecting portion 111 can penetrate the receiving member 110 and be correspondingly arranged with the first sensing line 121 and the second sensing line 122. When leakage occurs, after the droplet 40 enters the connecting portion 111, the first sensing line 121 and the second sensing line 122 can also come into contact with the droplet 40. In this embodiment, one of the connecting portions 111 can be simultaneously corresponding to the first sensing line 121 and the second sensing line 122, or two of the connecting portions 111 can be respectively corresponding to the first sensing line 121 and the second sensing line 122.

[0079] In some embodiments, the sensing line 120 may further include a third sensing line, a fourth sensing line, etc., in addition to the first sensing line 121 and the second sensing line 122. The third and fourth sensing lines are combined to form another sensing line 120. By setting up a combination of multiple sensing lines 120, even if one sensing line fails, the other sensing line can still maintain the normal operation of the system, thereby significantly improving the reliability of the system. At the same time, at the location where liquid dripping occurs, the liquid leakage situation can be more accurately identified through the coordinated work of two sensing lines. This multi-loop design can be optimized according to specific application scenarios. For example, in industrial environments requiring large-scale, rapid response, and high sensitivity, a dual-loop design ensures the effectiveness of the system.

[0080] In further implementations, the number of sensing lines 120 can be flexibly selected according to the specific application requirements of the liquid sensor 100. Specifically, the number of sensing lines 120 can be one, two, or more, and there is no unique limitation here.

[0081] See Figure 1 As shown, in one embodiment, the liquid sensor 100 operates based on two independent, symmetrical alloy circuits. These two circuits are connected to the monitoring device 200 via lead wires, while the termination ends ensure circuit closure. The alarm sensitivity is closely related to the length of the sensing wire in contact with the liquid and can be set to different sensitivity levels according to actual needs. For example, low sensitivity (suitable for rapid response to large-area leaks), medium sensitivity (balancing response speed and false alarm rate), and high sensitivity (suitable for detecting minute leaks) can be set to meet the needs of different application scenarios.

[0082] When liquid comes into contact with the predetermined length of the sensing wire, it seeps into the wire through small holes on its surface, causing the two sensing lines to conduct upon contact with the liquid. At this point, the monitoring device 200 performs calculations according to a pre-set algorithm, and immediately issues an alarm upon confirming a leak. Furthermore, when it is necessary to reset the liquid sensor 100, the liquid droplets 40 on it can be removed, making it convenient to use.

[0083] The liquid sensing element 100 of this embodiment is particularly suitable for dry and clean factory environments, such as the electrolyte filling workshop and electrolyte room in lithium battery factories. However, care should be taken to avoid it being squeezed by heavy equipment such as forklifts during use to prevent damage to the sensing wire or affect its normal operation. For areas that may face a higher risk of mechanical damage, additional protective measures can be taken, such as laying protective mats or installing guardrails, to ensure the safe operation of the sensing wire and extend its service life.

[0084] Furthermore, the housing 110 is preferably made of a flexible material, a design choice that gives the liquid sensing element 100 a certain degree of flexibility. The choice of a flexible material not only enhances the sensing element's buffering capacity against external impacts but also improves its overall durability. Specifically, when subjected to external forces, the flexible material can absorb some energy through deformation, thereby reducing the impact force directly applied to the internal structure. This not only helps protect the internal sensitive elements from damage but also extends the lifespan of the sensing element.

[0085] Furthermore, the use of flexible materials gives liquid sensors greater adaptability and installation flexibility. For example, in complex shapes or space-constrained environments, optimal placement can be achieved by slightly bending or adjusting the sensor's position without affecting its performance. This is particularly important for scenarios requiring installation on irregular surfaces or in confined spaces.

[0086] In one embodiment, the liquid sensing element 100 can be a thin-film liquid sensor with a thickness of 1 mm. Specifically, a thickness of 1 mm is sufficient to allow the sensor to resist certain physical wear and external pressure without sacrificing sensitivity, while still maintaining a close fit to the surface of the monitored object, especially in areas with complex shapes or limited space. Furthermore, this thickness range allows the sensor to maintain good electrical performance stability in various environments, ensuring reliability for long-term use.

[0087] Furthermore, considering the needs of practical applications, the thickness of thin-film liquid sensors can be adjusted as needed. While 1mm is set as the standard thickness in this example, the thickness can vary depending on the application, ranging from 0.5mm to 2mm. A thinner design (e.g., 0.5mm) may be more suitable for applications with strict space requirements, providing better space adaptability and concealment; while a slightly thicker design (e.g., close to 2mm) may perform better in environments requiring higher mechanical strength and durability.

[0088] See Figure 9 As shown, in one embodiment, the monitoring device 200 includes a controller 210 and an alarm component 220. The alarm component 220 is communicatively connected to the controller 210 and is used to issue alarm signals. The controller 210 is communicatively connected to both the liquid sensor 100 and the alarm component 220. The controller 210 is configured to receive control signals and control the alarm component 220 to issue alarm signals. This design enables the controller 210 to receive control signals from the liquid sensor 100 and control the alarm component 220 to issue corresponding alarm signals based on these signals.

[0089] Furthermore, when an electrolyte leak is detected, the controller 210 triggers the warning component 220 to issue a warning signal. On-site personnel can then be informed of the leak through this warning signal. Simultaneously, the alarm signal can also be transmitted to the external fire control room, activating the audible and visual alarms there. This ensures that leaks can be detected promptly even without direct monitoring. This dual alarm mechanism not only improves the reliability of the alarm but also increases the response speed to emergencies.

[0090] Furthermore, to quickly locate leaks and take timely measures to prevent major accidents, this system also supports precise identification of leak locations. Once the liquid sensor 100 detects an anomaly, it immediately sends information to the controller 210. After analyzing this information, the controller 210 can determine the approximate location of the leak and react swiftly. For example, it can automatically perform a power-off operation to prevent electrical short circuits from causing fires, or shut off valves in relevant pipes or containers to stop the leak from spreading. This automated process significantly reduces the time required for human intervention, enabling effective emergency measures to be taken in the shortest possible time, minimizing losses and risks.

[0091] Furthermore, the form of the warning component 220 can be diversified for different application scenarios. In addition to traditional sound and light alarms, it can also include modern communication methods such as SMS notifications and mobile application push notifications to ensure that relevant personnel can receive alarm information in a timely manner no matter where they are, so as to react quickly.

[0092] Specifically, the warning component 220 includes an audible and visual alarm that is connected to the controller 210 via a communication connection and is configured to emit an audible warning signal and / or a visual warning signal. This design ensures that when an anomaly such as a liquid leak is detected, attention is drawn not only through a strong visual flash but also through an audible alarm to alert on-site personnel, effectively conveying emergency information even in noisy environments or with poor visibility.

[0093] Furthermore, to increase the system's flexibility and adaptability, the warning component 220 may also include a power-off device. This power-off device is electrically connected to the liquid-contaminated device 30 and is primarily used to control the power cut-off of the liquid-contaminated device 30. Once the monitoring device 200 detects a potential hazard (such as electrolyte leakage) through the liquid sensor 100, the controller 210 immediately sends a command to the power-off device to cut off the power supply to the relevant equipment, thereby preventing secondary disasters that may be caused by electrical faults, such as fires or explosions. In addition, the power-off device can also be set to automatic or manual reset modes according to actual needs, so as to facilitate rapid resumption of work after an accident or to ensure safety before resuming operation.

[0094] It is worth noting that in some embodiments, the warning component 220 may simultaneously include the aforementioned audible and visual alarm and power failure protector to provide more comprehensive safety measures. In this case, when an abnormality is detected, the audible and visual alarm is activated first, quickly attracting the attention of those nearby and prompting them to take appropriate action; at the same time, the power failure protector will also operate synchronously, cutting off the power supply to prevent the accident from escalating.

[0095] Furthermore, considering the varying needs of different application scenarios, the specific forms of audible and visual alarms can be diverse. For example, a high-decibel buzzer can be used in conjunction with flashing LED lights, or a more advanced laser indicator can be employed to enhance the light warning effect. As for power failure protectors, their triggering conditions, response speed, and other parameters can be adjusted according to actual conditions to meet specific safety standards. These flexible designs enable this system to be widely applied in various complex environments, providing users with reliable safety protection.

[0096] See Figures 4 to 8 As shown, the present invention also provides a battery production system, which includes a liquid-contacting device 30 and an electrolyte leakage detection system 10 as described in any of the above embodiments; the liquid-contacting device 30 is disposed within a receiving space 20; the liquid sensor 100 of the electrolyte leakage detection system 10 is disposed within the receiving space 20, and the liquid sensor 100 of the electrolyte leakage detection system 10 is configured to output a control signal when it comes into contact with electrolyte leaking from the liquid-contacting device.

[0097] In the battery production system of this embodiment, by setting up the electrolyte leakage detection system 10, the state of the electrolyte can be monitored in real time during the battery production process, which can effectively improve the safety of the battery production system. The liquid sensor 100 is designed to respond quickly to liquid leakage through direct contact. Therefore, the surrounding layout of the sensor ensures that when electrolyte leakage occurs, regardless of which part of the liquid-contacting device 30 is affected, the electrolyte can immediately reach the sensing area in the initial stage. This design principle not only ensures the sensitivity of the monitoring but also improves the response speed of the system, enabling the monitoring device 200 to issue a warning signal in a timely manner at the moment of leakage, thereby gaining valuable time for subsequent handling measures.

[0098] This configuration is particularly suitable for large battery production workshops, where there are numerous devices and equipment. Traditional gas detection methods often fail to detect potential leaks in a timely manner due to time delays and environmental interference. However, by tightly integrating the liquid sensor 100 with the liquid-contacting device 30, the liquid contact formed immediately upon electrolyte leakage will be detected by the sensor 100, significantly improving overall monitoring efficiency.

[0099] In one embodiment, the liquid-contacting device 30 includes a liquid storage element 31 disposed within a receiving space 20, and a liquid sensor 100 disposed within the receiving space 20; on the orthographic projection of the bottom surface of the receiving space 20, the liquid sensor 100 is disposed at least partially around the liquid storage element 31.

[0100] By arranging the liquid sensor 100 partially or completely around the liquid reservoir 31, the sensitivity and accuracy of leak detection can be greatly improved. When a leak occurs in the liquid reservoir 31, the flowing liquid will first come into contact with the liquid sensor 100, thereby triggering an alarm signal. This method can not only detect the leak point in a timely manner, but also roughly determine the specific location of the leak based on the position where the sensor is triggered, providing important reference information for subsequent maintenance work.

[0101] Furthermore, the number of liquid sensors 100 can be adjusted according to actual needs. Specifically, the number of liquid sensors can be one, two, or more, without any unique limitation. The technical advantage of setting multiple liquid sensors is that it can provide more comprehensive monitoring coverage. Especially for large liquid storage devices or storage systems with complex structures, increasing the number of liquid sensors helps improve the overall system reliability and reduce the risk of missed detections. In addition, multiple sensors can form a redundant design, so even if one sensor fails, the other sensors can still work normally, ensuring the continuous effectiveness of the system.

[0102] Specifically, see Figure 7In the embodiment shown, the liquid storage component 31 includes a first liquid storage tank 3101 and a second liquid storage tank 3102, the first liquid storage tank 3101 and the second liquid storage tank 3102 are arranged at intervals, and the number of liquid sensing elements 100 is at least two, wherein the two liquid sensing elements 100 are respectively arranged around the first liquid storage tank 3101 and the second liquid storage tank 3102.

[0103] By installing liquid sensors 100 for both the first and second storage tanks 3101 and 3102, the status changes of each tank can be monitored individually. This design not only improves the overall system's monitoring accuracy but also significantly accelerates the response to potential leaks. When a leak occurs in a storage tank, the corresponding liquid sensor 100 can quickly detect the presence of liquid and immediately issue an alarm signal, allowing operators to take timely measures to prevent the accident from escalating.

[0104] Furthermore, depending on actual needs, the number of liquid sensors 100 can be increased to three, four, or more, without limitation. For example, for larger capacity or more complex liquid storage systems, increasing the number of liquid sensors can provide more detailed monitoring coverage, ensuring that even minute leaks occurring in the least likely locations can be detected promptly. This redundancy design not only enhances system reliability but also ensures that if one sensor fails, the others can still maintain normal monitoring functions, guaranteeing the continuous effectiveness of the entire system.

[0105] In this embodiment, the liquid sensor 100 is not only arranged around the first liquid storage tank 3101 and the second liquid storage tank 3102, but their relative positions can also be adjusted as needed, such as partial overlap or complete separation. Different arrangement schemes can be selected according to the specific usage environment and safety requirements to achieve the best monitoring effect. For example, in some cases, a partial overlap can make the sensing area more concentrated, which is conducive to quickly locating the leak point; while in other cases, a completely separated arrangement helps to expand the monitoring range and improve the monitoring accuracy.

[0106] See Figure 8 As shown, in one embodiment, there are multiple liquid storage components 31. Specifically, the number of liquid storage components 31 can be two, three, four, or more, and is not limited to a single number. By setting multiple liquid storage components 31, different liquid storage requirements can be met or the redundancy of the system can be improved, ensuring that other liquid storage components can still work normally when one liquid storage component fails, thereby ensuring the stability and reliability of the entire system operation.

[0107] In this embodiment, the liquid sensor 100 can also be arranged around multiple liquid reservoirs 31. This means that one or more liquid sensors 100 can simultaneously monitor the state changes of multiple liquid reservoirs 31, which not only improves space utilization but also simplifies system design and maintenance. For example, when a single annular liquid sensor 100 is used to surround multiple liquid reservoirs 31, the number of sensors can be reduced, costs can be lowered, and installation and commissioning can be facilitated.

[0108] Furthermore, depending on the specific application scenario, the liquid sensor 100 can be configured in different ways to achieve the best monitoring effect. For example, in some applications requiring high-precision monitoring, an independent liquid sensor 100 can be configured for each liquid reservoir 31. Although this increases cost and complexity, it can significantly improve the monitoring accuracy of changes in the state of each liquid reservoir. In other cases, to optimize cost and simplify the system structure, a single liquid sensor 100 can be arranged around multiple liquid reservoirs 31. Although this may slightly sacrifice some monitoring accuracy, it is sufficient in many application environments.

[0109] See Figures 4 to 6 As shown, in some embodiments, the liquid-contaminating device 30 includes a liquid injection device 32, and the liquid sensor 100 is at least partially disposed around the liquid injection device 32. Specifically, in the orthographic projection of the bottom surface of the receiving space 20, the liquid sensor 100 may be disposed around the liquid injection device 32; in some embodiments, the liquid sensor 100 may also be disposed around the surface of the liquid injection device 32, which is not a unique limitation. In a specific arrangement, the liquid sensor 100 may completely surround the liquid injection device 32, or only surround its critical parts, such as interfaces or areas prone to leakage.

[0110] The injection device 32 may be at risk of leakage due to factors such as equipment aging, material fatigue, seal failure, or improper operation. Monitoring with a liquid sensor 100 is a highly effective measure to address this potential risk. When the liquid sensor 100 at least partially surrounds the injection device 32, it can quickly detect any accidental leakage and promptly issue an alarm signal so that appropriate remedial measures can be taken.

[0111] In practical applications, the selection and arrangement of the liquid sensor 100 can be adjusted according to the specific usage environment and requirements. For example, for applications requiring high sensitivity, a liquid sensor with fast response speed and high detection accuracy can be selected; while for situations with limited space, a smaller sensor with equally reliable performance can be chosen. Furthermore, depending on the specific structure and layout of the liquid injection device 32, the liquid sensor 100 can also be designed in different shapes and sizes to ensure effective coverage of all areas where leakage risks may exist.

[0112] Specifically, the accommodating space 20 includes an injection position 21 and an installation area 22 spaced apart. In this embodiment, an injection device 32 is located in the installation area 22 for injecting electrolyte at the injection position 21. To improve safety and ensure timely detection of potential liquid leaks, at least two liquid sensors 100 are used. The two liquid sensors 100 surround the injection position 21 and the installation area 22, respectively. This arrangement effectively monitors these two critical areas, preventing safety accidents caused by liquid leaks.

[0113] To elaborate further, the number of liquid sensors 100 can be one, two, or more; there is no single limitation. The advantage of using multiple liquid sensors 100 is that it not only improves monitoring coverage and accuracy but also allows for faster and more accurate location of the leak source when a leak occurs through multi-point monitoring, thereby accelerating response speed and processing efficiency. For example, when one liquid sensor 100 detects a leak signal, the system can quickly determine the specific location of the leak based on the location information of each sensor, which is crucial for taking timely countermeasures.

[0114] Further, see Figure 5 As shown, the liquid-contacting device 30 also includes a liquid delivery pipeline connected to the liquid injection device 32 and used to deliver electrolyte to the liquid injection device 32. To enhance the safety and reliability of the system, the liquid sensor 100 is arranged at least partially around the connection 111 between the liquid delivery pipeline and the liquid injection device 32. This arrangement not only ensures effective monitoring of critical aspects of the electrolyte delivery process but also allows for timely detection and handling of potential leaks, thereby ensuring the safety of the entire operation.

[0115] By installing multiple liquid sensors 100 around the connection 111 between the infusion pipeline and the injection device 32, not only can the accuracy and response speed of monitoring be improved, but also abnormalities can be detected immediately at the initial stage of leakage, preventing the situation from escalating. In addition, the multi-point monitoring layout is also conducive to accurately locating the leak source, providing a basis for quickly taking remedial measures, and reducing downtime and maintenance costs.

[0116] Given that the connection 111 is a critical node for electrolyte flow, any leakage here could lead to serious consequences. Therefore, installing a liquid sensor 100 at this location enables real-time monitoring of potential risks. Once a leak is detected, the system will immediately trigger an alarm and automatically stop the electrolyte delivery via the control system, preventing greater losses.

[0117] In one embodiment, the connection is located at the top of the liquid injection device 32, wherein at least one liquid sensing element 100 is located at the top of the liquid injection device 32.

[0118] By placing at least one liquid sensor 100 on top of the liquid injection device 32, especially at the connection point, any potential leaks can be effectively detected. This is because once an electrolyte leak occurs, the leaking liquid tends to flow downwards due to gravity, and the liquid sensor 100 located at the top can detect this anomaly first, thereby immediately triggering an alarm mechanism to prevent the situation from worsening.

[0119] Furthermore, installing multiple liquid sensors 100 can improve the reliability and accuracy of monitoring. For example, by installing multiple liquid sensors 100 at different locations on the top of the injection device 32, a monitoring network with wider coverage can be formed. Even if one sensor malfunctions or fails to detect a leak accurately, the other sensors can still function, ensuring a high level of safety for the entire system.

[0120] Specifically, the accommodating space 20 includes a storage room; preferably, the monitoring device 200 is located outside the storage room to prevent electrolyte leakage from affecting the normal operation of the monitoring device 200. This arrangement not only ensures the safety and stability of the monitoring system, but also facilitates real-time monitoring of the environmental conditions inside the storage room.

[0121] Installing the monitoring device 200 outside the storage room effectively isolates the monitoring equipment from potential electrolyte leaks, thus preventing short circuits or other mechanical failures caused by liquid contact. Furthermore, this configuration facilitates maintenance personnel in inspecting and maintaining the external monitoring device without entering storage areas where hazardous gases or leaks may occur, significantly improving operational safety.

[0122] Furthermore, the design of storage facilities can vary depending on the application scenarios and requirements. For example, in some embodiments, storage facilities may need to be equipped with ventilation systems to maintain internal air circulation and reduce the risk of harmful gas accumulation.

[0123] It is worth noting that although the monitoring device 200 is located outside the storage room, its design should ensure the stability and accuracy of signal transmission. To this end, wireless communication technology or a dedicated data transmission line can be used to ensure that various data collected from inside the storage room can be transmitted to the monitoring device 200 without loss, and further analyzed and processed.

[0124] See Figure 4As shown, in one embodiment, the electrolyte leakage detection system 10 of this embodiment can be applied to electrolyte filling sites for small batteries such as consumer batteries. Specifically, the filling area in this application environment often uses a filling device 32 with a shell and a top plate. The machine shell is relatively sealed and has a liquid storage container 31 inside. Since this type of work area mainly handles small batteries, the amount of electrolyte used is relatively small, but there is still a risk of leakage. In such an environment, the hazards are mainly concentrated in the small liquid storage container 31 and the junction of the filling pipe at the top of the filling device 32 and the shell. In order to effectively monitor and promptly detect possible electrolyte leakage, the liquid sensor 100 in this embodiment is arranged around the top of the filling device 32 and around the liquid storage container 31.

[0125] This arrangement ensures comprehensive coverage of potential leak points, thereby improving the detection sensitivity and response speed of the entire system. Specifically, placing the liquid sensor 100 around the top of the injection device 32 can effectively capture any trace amounts of electrolyte seeping from the connection between the injection pipe and the housing, while placing it around the reservoir 31 allows for rapid detection of electrolyte leaking from the reservoir 31, regardless of the direction of the leak.

[0126] It is worth noting that, considering that different types of batteries and liquid filling devices may have different design specifications and operating conditions, the number of liquid sensors 100 can be adjusted according to actual needs. For example, in some cases, only one or two liquid sensors may need to be installed in critical locations; while in other cases, to achieve higher safety standards, more liquid sensors may need to be installed in multiple locations. Specifically, the number of liquid sensors 100 can be one, two, or more, and there is no single limitation. Increasing the number of liquid sensors helps to improve detection accuracy and reliability, especially in complex working environments.

[0127] Finally, by integrating the liquid sensor 100 into the entire electrolyte leak detection system 10 and combining it with the monitoring device 200, once a leak is detected, the monitoring device 200 can immediately issue an alarm to notify relevant personnel to take emergency measures to prevent the accident from escalating. This approach not only improves work efficiency but also greatly enhances operational safety, which is crucial for protecting the lives and property of workers.

[0128] See Figure 5As shown, in one embodiment, the electrolyte leakage detection system 10 of this embodiment can be applied to the electrolyte filling workshop for the production of large batteries such as power batteries and energy storage batteries. In such an environment, the electrolyte filling area uses both electrolyte filling equipment 32 with a shell and a top plate, and electrolyte filling equipment 32 with a shell-less and top-less design. Since these work areas handle large batteries, the amount of electrolyte used is relatively large, increasing the risk of leakage and the difficulty of management. In this case, the hazards are mainly concentrated at the electrolyte delivery pipe interface of the electrolyte filling equipment 32 and the delivery pipe itself; these locations are high-risk areas for leakage.

[0129] To effectively monitor these critical components, liquid sensors 100 can be positioned at the injection / infusion pipeline interface of the injection device 32 and around the infusion pipeline itself. Furthermore, a separate liquid storage unit 31 is located around the injection area, and its perimeter is also included in the monitoring range, ensuring that any potential leaks can be detected and addressed promptly.

[0130] This layout strategy not only covers all possible leak points but also improves the response speed and accuracy of the entire system by rationally distributing the positions of the liquid sensors 100. Specifically, placing the liquid sensors 100 at and near the injection / infusion pipeline interface allows for rapid identification of electrolyte leaks from the connection point; while monitoring the infusion pipeline itself is to prevent accidental leaks caused by pipeline aging or damage. Monitoring around the liquid storage unit 31 is equally important, as it directly relates to the safety of the stored medium.

[0131] Considering the potential differences in the size and type of electrolyte injection workshops, the number of liquid sensors 100 can be flexibly adjusted according to the actual situation. For example, on some large-scale production lines, multiple liquid sensors may be needed to ensure comprehensive coverage; while in smaller production environments, only a small number of sensors may be sufficient. Specifically, the number of liquid sensors 100 can be one, two, or more, and there is no single limitation. Increasing the number of liquid sensors helps improve the overall monitoring effect, especially important when dealing with large amounts of electrolyte.

[0132] See Figure 6 As shown, in one embodiment, based on the description of the above embodiments, this embodiment further refines the arrangement strategy of the liquid sensing element 100. Specifically, the liquid sensing element 100 is also arranged around the inner edge of the injection area 12, which not only covers the perimeter of the injection position 21, but also includes the perimeter of the liquid storage element 31. This layout ensures comprehensive monitoring of key parts throughout the entire injection process.

[0133] In particular, the injection point is considered a key monitoring area because it contains a large number of injection pipes, connectors, and battery injection ports. These areas are prone to becoming sources of electrolyte leakage due to frequent operation and wear at the connections. By installing liquid sensors 100 in these critical locations, precise monitoring of potential leaks can be achieved, allowing for timely detection and handling of any possible leaks.

[0134] Considering the varying needs of different production environments, the number of liquid sensors 100 can be flexibly adjusted according to actual requirements. For example, in high-risk areas such as injection / infusion pipeline interfaces and their vicinity, more liquid sensors may be needed to ensure comprehensive coverage; while in relatively safe areas, the number of sensors can be appropriately reduced. Specifically, the number of liquid sensors 100 can be one, two, or more, without a fixed limitation. Increasing the number of sensors helps improve detection accuracy and response speed, which is particularly important in scenarios involving large amounts of electrolyte.

[0135] See Figure 7 As shown, in one embodiment, the electrolyte leakage detection system 10 of this embodiment can be used for the layout of an electrolyte storage warehouse within a lithium battery factory. In this environment, a large storage unit 31 serves as the source of electrolyte, providing the necessary electrolyte to the transfer room. Since there are no factors in the warehouse that could damage the liquid sensor 100, such as mechanical impact or chemical corrosion, the liquid sensor 100 can be safely laid around the floor surrounding the storage unit 31.

[0136] This layout offers several advantages. First, it provides comprehensive monitoring of the ground surrounding the liquid storage unit 31, ensuring that any potential leaks can be detected quickly. Especially at the point where the liquid storage unit 31 contacts the ground, which is often the area with the highest risk of leakage, installing the liquid sensor 100 there effectively improves the sensitivity and reliability of the detection.

[0137] Furthermore, considering storage warehouses of different sizes and needs, the number of liquid sensors 100 can be flexibly adjusted according to actual requirements. Specifically, the number of liquid sensors 100 can be one, two, or more, without any unique limitation. Increasing the number of sensors not only helps to expand the monitoring range but also improves the redundancy of the system. Even if one sensor fails, the other sensors can still maintain the normal operation of the system, thereby ensuring the stability and reliability of the entire system.

[0138] See Figure 8As shown, in some embodiments, the electrolyte leakage detection system 10 can also be used in the electrolyte transfer room within a lithium battery factory. This system is designed to ensure that any potential leaks can be detected promptly and accurately during the transfer of electrolyte from the storage warehouse to the production workshop. Depending on the specific configuration and operating procedures of the transfer room, it typically includes the following two types:

[0139] The first type involves a transfer room containing a liquid storage unit 31. Electrolyte from the storage warehouse is transferred to the storage tank within the transfer room via external pipelines. Then, the electrolyte is delivered to the corresponding production workshop via another set of pipelines. This layout is suitable for situations requiring temporary storage of a certain amount of electrolyte for rapid response to production needs.

[0140] The second type of transfer station involves directly moving the tanks stored in the cold storage to the transfer station, and then, similarly, delivering the electrolyte to the corresponding production workshop via pipelines. This method is more suitable for applications that require maintaining the electrolyte at a low temperature until just before use, to avoid the problem of electrolyte performance degradation due to temperature increases.

[0141] Both types of rooms contain mobile liquid storage units 31, meaning that forklifts or similar equipment may be used for material handling during electrolyte transportation and storage. To prevent damage to the liquid sensor 100 from these handling devices, this solution recommends laying the liquid sensor 100 around the floor of the transfer room, stopping at the doorway. This ensures effective monitoring of the entire room perimeter without damaging the sensor due to frequent forklift traffic.

[0142] Finally, this solution emphasizes the importance of system integration. By connecting the liquid sensor 100 to the monitoring device 200, not only can real-time data transmission and analysis be achieved, but an alarm mechanism can also be triggered immediately upon detecting a leak, such as an audible and visual alarm or a control command to automatically close relevant valves. In this way, once a leak occurs, the system can quickly notify relevant personnel to take emergency measures, effectively preventing the accident from escalating and protecting the safety of personnel and equipment.

[0143] In summary, existing technologies lack truly effective means for monitoring electrolyte leaks in lithium battery factories. In particular, methods borrowed from the petrochemical industry, such as gas detectors, are ineffective for monitoring electrolytes with low volatility. Furthermore, because these environments require temperature control, the rate at which liquids transform into gases and diffuse at low temperatures is slow, making gas detection methods unsuitable for detecting liquid leaks.

[0144] The electrolyte leakage detection system 10 in this embodiment provides a solution for easily detecting electrolyte leaks without the need for complex equipment. By employing a liquid sensor 100 in conjunction with a monitoring device 200, this system not only significantly reduces manufacturing and maintenance costs but also offers ease of operation and applicability to a wide range of industrial environments. The electrolyte leakage detection system 10 provided in this embodiment, through reasonable design and selection of appropriate components, achieves effective monitoring of electrolyte leaks. It not only solves the response delay problem inherent in traditional detection methods but also greatly reduces the system's manufacturing and maintenance costs, providing strong support for the safe operation of lithium battery production workshops.

[0145] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not 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 the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0146] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0147] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" 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.

[0148] In the description of this specification, the references to terms such as "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 embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An electrolyte leakage detection system (10), characterized in that, include: A liquid sensor (100) is disposed within a receiving space (20), and the liquid sensor (100) at least partially surrounds a liquid-contacting device (30) within the receiving space (20), the liquid sensor (100) being configured to output a control signal when in contact with electrolyte leaking from the liquid-contacting device (30); as well as A monitoring device (200) is communicatively connected to the liquid sensor (100), and the monitoring device (200) is configured to receive the control signal from the liquid sensor (100) to output a warning signal.

2. The electrolyte leakage detection system (10) according to claim 1, characterized in that, The liquid sensor (100) includes a container (110) and a sensing line (120). The sensing line (120) is communicatively connected to the monitoring device (200), and the sensing line (120) is at least partially disposed within the container (110). The container (110) is disposed within the accommodating space (20).

3. The electrolyte leakage detection system (10) according to claim 2, characterized in that, The container (110) has a connecting part (111), the sensing circuit (120) is located inside the container (110), and the electrolyte can enter the connecting part (111) and contact the sensing circuit (120).

4. The electrolyte leakage detection system (10) according to claim 3, characterized in that, The connecting part (111) includes at least one of a connecting hole and a connecting groove.

5. The electrolyte leakage detection system (10) according to claim 3, characterized in that, The number of the connecting parts (111) is multiple, and the multiple connecting parts (111) are spaced apart along the length direction of the liquid sensing element (100).

6. The electrolyte leakage detection system (10) according to any one of claims 2-5, characterized in that, The sensing line (120) includes a first sensing line (121) and a second sensing line (122), the first sensing line (121) and the second sensing line (122) are respectively communicatively connected to the monitoring device (200), and the first sensing line (121) and the second sensing line (122) are configured to be in contact with the electrolyte.

7. The electrolyte leakage detection system (10) according to claim 6, characterized in that, The first sensing line (121) and the second sensing line (122) are used to contact the electrolyte and short-circuit or form a closed loop.

8. The electrolyte leakage detection system (10) according to claim 6, characterized in that, The sensing line (120) further includes a first signal line (123) and a second signal line (124). The first signal line (123) is connected to the monitoring device (200) and the first sensing line (121) respectively, and the second signal line (124) is connected to the monitoring device (200) and the second sensing line (122) respectively. The first sensing line (121) and the second sensing line (122) are used to contact the electrolyte and short-circuit it.

9. The electrolyte leakage detection system (10) according to claim 1, characterized in that, The liquid sensing elements (100) are connected end to end and enclose a closed detection area, and the liquid-contacting device (30) is located within the detection area.

10. The electrolyte leakage detection system (10) according to claim 1, characterized in that, The monitoring device (200) includes a controller (210) and an alarm component (220). The alarm component (220) is communicatively connected to the controller (210) and is used to issue an alarm signal. The controller (210) is communicatively connected to the liquid sensor (100) and the alarm component (220). The controller (210) is configured to receive the control signal and control the alarm component (220) to issue the alarm signal.

11. The electrolyte leakage detection system (10) according to claim 10, characterized in that, The warning component (220) includes an audible and visual alarm, which is communicatively connected to the controller (210) and is used to emit at least one of an audible warning signal and a visual warning signal. And / or the warning component (220) includes a power-off protector electrically connected to the liquid-contacting device (30) and used to control the power-off of the liquid-contacting device (30).

12. A battery production system, characterized in that, include: Liquid-contacting device (30) is located within the containment space (20); as well as According to any one of claims 1-11, the electrolyte leakage detection system (10) of the electrolyte leakage detection system (10) is disposed in the receiving space (20), and the liquid sensor (100) of the electrolyte leakage detection system (10) is configured to output a control signal when in contact with electrolyte leaking from the liquid-contacting device.

13. The battery production system according to claim 12, characterized in that, The liquid-contacting device (30) includes a liquid storage component (31) disposed within the accommodating space (20), and a liquid sensing component (100) disposed within the accommodating space (20); on the orthographic projection of the bottom surface of the accommodating space (20), the liquid sensing component (100) is at least partially disposed around the liquid storage component (31).

14. The battery production system according to claim 13, characterized in that, The liquid storage device (31) includes a first liquid storage tank (3101) and a second liquid storage tank (3102), the first liquid storage tank (3101) and the second liquid storage tank (3102) are arranged at intervals, and the number of liquid sensing elements (100) is at least two, wherein the two liquid sensing elements (100) are respectively arranged around the first liquid storage tank (3101) and the second liquid storage tank (3102).

15. The battery production system according to claim 12, characterized in that, The liquid-contaminating device (30) includes a liquid injection device (32), and the liquid sensing element (100) is disposed at least partially around the liquid injection device (32).

16. The battery production system according to claim 15, characterized in that, The accommodating space (20) includes an injection position (21) and an installation area (22) spaced apart. The injection device (32) is located in the installation area (22). At least one of the injection position (21) and the installation area (22) is surrounded by the liquid sensing element (100).

17. The battery production system according to claim 15, characterized in that, The liquid-contacting device (30) further includes a liquid delivery pipe connected to the liquid injection device (32) and used to deliver electrolyte toward the liquid injection device (32), and the liquid sensing element (100) is disposed at least partially around the connection between the liquid delivery pipe and the liquid injection device (32).

18. The battery production system according to claim 17, characterized in that, The connection is located on the top of the liquid injection device (32), wherein at least one of the liquid sensing elements (100) is located on the top of the liquid injection device (32).

19. The battery production system according to claim 12, characterized in that, The containment space (20) includes storage warehouses and / or battery production workshops.

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