Battery leakage collection device and electric energy storage system

Abstract

The embodiment of the utility model provides a battery leakage liquid collecting device and an electric energy storage system, a liquid receiving port is arranged at the top of a body of the battery leakage liquid collecting device, the body comprises a leakage liquid collecting surface, and the liquid receiving port is connected with a high potential energy end of the leakage liquid collecting surface; the low potential energy end of the leaked liquid collecting face is provided with a leaked liquid guiding-out opening. According to the battery leaked liquid collecting device with the inclined leaked liquid collecting surface, leaked liquid confluence is realized by optimizing the structural design, and the leaked liquid collecting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery leakage collection device. Background Technology

[0002] In the field of electrochemical energy storage technology, flow batteries have demonstrated significant advantages in large-scale, long-term energy storage applications due to their high safety, long service life, design flexibility, and low levelized cost of electricity (LCOE) over their entire lifecycle. A typical flow battery system consists of key components such as power units (stack), capacity units (reservoirs containing positive and negative electrolytes), piping systems, circulation systems, and battery management systems. The stack and reservoir are connected via piping, and the charging and discharging process is achieved using a circulation pump. However, due to its unique system structure and connection method, the risk of electrolyte leakage is difficult to completely avoid. Potential leakage points are mainly concentrated at welded joints in the reservoir, piping connections, sensor connectors, and the stack itself. Among these, the stack, as the core component of the flow battery, is composed of multiple stacked and secured parts. During assembly or operation, mechanical failures such as deformation or damage to internal components can lead to stack leakage. Since flow batteries typically use corrosive conductive electrolytes, to prevent leaks from damaging system operation, personnel safety, and the environment, and thus causing safety accidents, existing technologies mainly employ a leak collection tank or tray of a certain size below the battery stack, with dispersed leak sensors arranged within it to monitor leaks in real time. However, the design of existing leak collection devices and leak detection schemes have shortcomings; their surfaces are mostly planar, which is not conducive to the recovery and treatment of leaked liquids. Utility Model Content

[0003] In view of the above problems, this utility model proposes a battery leakage collection device that overcomes or at least partially solves the above problems. The battery leakage collection device has a liquid inlet on the top of its main body, and the main body includes a leakage collection surface. The liquid inlet is connected to the high potential energy end of the leakage collection surface.

[0004] The low-potential end of the leakage collection surface is provided with a leakage outlet.

[0005] Optionally, the space occupied by the leakage collection surface is a frustum or a polygonal platform, the liquid inlet and the leakage outlet are the top and bottom surfaces of the frustum or the polygonal platform, and the area of ​​the liquid inlet is larger than that of the leakage outlet.

[0006] Optionally, a leakage collection tank is provided at the bottom of the body, which is used to store battery leakage flowing out from the leakage outlet.

[0007] Optionally, a leakage collection chamber is provided at the bottom of the main body, and the leakage collection tank is disposed on the bottom plate;

[0008] When the base plate is fully inserted into the opening of the leakage collection chamber, the leakage collection tank is located below the leakage outlet.

[0009] Optionally, a lifting handle is provided on the side of the base plate.

[0010] Optionally, the bottom surface of the base plate is provided with a slide rail.

[0011] Optionally, the top of the battery leakage collection device is provided with multiple liquid inlets, each of which is connected to the high potential energy end of an independent leakage collection surface, and the multiple liquid inlets correspond one-to-one with the multiple leakage collection surfaces.

[0012] Optionally, each of the independent leakage collection surfaces is provided with an independent leakage outlet at its low potential end.

[0013] The bottom of the main body is provided with multiple leakage collection chambers. When the bottom plate is fully inserted into the opening of the leakage collection chamber, the multiple leakage collection tanks are located below the independent leakage outlets, and the positions of the multiple leakage collection tanks correspond one-to-one with the multiple independent leakage outlets.

[0014] Optionally, a leakage detection sensor is provided at the bottom of the leakage outlet or the leakage collection container.

[0015] This utility model embodiment also discloses an electrical energy storage system, including: a battery and the above-mentioned battery leakage collection device, wherein the battery leakage collection device is placed at the bottom of the battery.

[0016] The embodiments of this utility model have the following advantages:

[0017] By providing a liquid inlet at the top of the main body of the battery leakage collection device, the main body includes a leakage collection surface, and the liquid inlet is connected to the high potential energy end of the leakage collection surface; a leakage outlet is provided at the low potential energy end of the leakage collection surface; this battery leakage collection device with an inclined leakage collection surface, through optimized structural design, achieves leakage convergence and improves leakage collection efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a battery leakage collection device provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of another battery leakage collection device provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of another battery leakage collection device provided in this embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a battery leakage collection device with multiple leakage collection tanks provided in this embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of another battery leakage collection device with multiple leakage collection tanks provided in this embodiment of the present invention. Detailed Implementation

[0023] 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.

[0024] The implementation of the technical solution of this application will be further described in detail below with reference to the accompanying drawings.

[0025] In practical applications, leakage collection devices of related technologies generally adopt a planar design, which has the following three main drawbacks:

[0026] 1. Leakage and retention make detection and recovery difficult: The planar structure makes it difficult for leaked liquid to flow, which is not conducive to rapid detection and efficient recovery and treatment.

[0027] 2. Low sensor sensitivity and untimely leak detection: Existing planar collection devices have a large area and only a few point sensors are placed on the surface or edges. When a small amount of leaked liquid drips, it is difficult for it to quickly contact the sensor, resulting in the leakage of fuel cell stack not being detected in time. Maintenance personnel cannot find and handle the problem in time, which may lead to problems such as fuel cell stack performance degradation and damage, increasing the risk of safety accidents.

[0028] 3. High workload for maintenance and risk of leakage: Existing collection devices require manual suction to drain or recover leaked liquid and perform surface cleaning, which greatly increases the workload of maintenance personnel. In addition, if a large amount of liquid leaks suddenly occurs, maintenance personnel may not be able to drain it in time, which may lead to overflow, damage to components around the fuel cell stack, and increase the difficulty of maintenance and economic losses.

[0029] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a battery leakage collection device provided in an embodiment of the present invention;

[0030] The battery leakage collection device has a liquid inlet 102 on the top of its main body 101. The main body 101 includes a leakage collection surface 103, and the liquid inlet 102 is connected to the high potential energy end of the leakage collection surface 103.

[0031] The low-potential end of the leakage collection surface 103 is provided with a leakage outlet 104.

[0032] In a specific implementation, the main body can be the main structure of a leak collection device, used to receive and collect leaked liquid. For example, the main body can be divided into two layers: the upper layer is used for the convergence and detection of leaks, and the lower layer is used for the collection and detection of leaks. That is, the location and number of detection devices can be different, and this embodiment of the present invention does not limit this.

[0033] The inlet can be located at the opening on the top of the body to receive dripping leaked liquid.

[0034] The leak collection surface can be an inclined surface inside the body, used to guide the flow of leaking liquid.

[0035] High potential end: The higher position of the leakage collection surface.

[0036] Low potential end: The lower part of the leakage collection surface.

[0037] In a specific implementation, the leakage collection surface of this utility model embodiment is not parallel to the horizontal plane. Battery leakage can flow on the leakage collection surface due to gravity, and the flow direction can be from the high potential energy end to the low potential energy end until it reaches the leakage outlet.

[0038] Leakage outlet: An opening located at the low potential energy end of the leakage collection surface, used to discharge the collected leaked liquid.

[0039] For example, such a leakage collection device is installed below a flow battery stack. When a leak occurs inside the stack, electrolyte drips from the leak point.

[0040] The leaked electrolyte enters the body of the leakage collection device through the inlet.

[0041] Because the leakage collection surface is inclined, the electrolyte will flow from the high potential energy end to the low potential energy end under the action of gravity.

[0042] All electrolyte that drips onto the leakage collection surface will converge at the leakage outlet at the low potential end.

[0043] The collected electrolyte can be discharged through the leakage outlet for recycling or treatment.

[0044] Its advantages over related technologies are:

[0045] Efficient collection and detection:

[0046] The inclined leak collection surface design ensures that leaked liquid can flow quickly and effectively and be concentrated at the leak outlet, reducing the amount of liquid remaining on the surface of the collection device.

[0047] Compared to planar collection devices, the inclined design allows the liquid to flow to the low potential end more quickly. Therefore, if the sensor is placed at the low potential end, this structure is beneficial for detecting leaks more promptly.

[0048] Simplify operations and maintenance:

[0049] The leak outlet allows for easy discharge of collected leaked liquid, reducing the tedious manual handling of leaks and lowering the workload for maintenance personnel.

[0050] Reduce the risk of liquid leakage and damage to components around the fuel cell stack.

[0051] Improve security:

[0052] The ability to quickly and effectively collect and drain leaked liquids helps to detect and handle leaks in a timely manner, reducing the risk of fuel cell damage and safety incidents.

[0053] By providing a liquid inlet at the top of the battery leakage collection device body, the body includes a leakage collection surface, and the liquid inlet is connected to the high-potential end of the leakage collection surface; a leakage outlet is provided at the low-potential end of the leakage collection surface; this battery leakage collection device with an inclined leakage collection surface, through optimized structural design, improves the efficiency of leakage collection and detection, simplifies operation and maintenance, enhances safety, and overcomes the problems of leakage retention, difficult detection, and large maintenance workload caused by planar design in the prior art.

[0054] Based on the above embodiments, modified embodiments of the above embodiments are proposed. It should be noted that, in order to keep the description brief, only the differences from the above embodiments are described in the modified embodiments.

[0055] Optionally, the space occupied by the leakage collection surface is a frustum or a polygonal platform, the liquid inlet and the leakage outlet are the top and bottom surfaces of the frustum or the polygonal platform, and the area of ​​the liquid inlet is larger than that of the leakage outlet.

[0056] In this embodiment of the invention, the leakage collection surface refers to the surface that collects leakage. This surface may not be a simple plane, but a three-dimensional structure with a specific shape.

[0057] A frustum of a cone is the portion of a cone that is truncated by a plane parallel to its base, located between the truncated section and the base. It has two parallel circular bases, a larger base and a smaller top, and a lateral surface connecting the two bases.

[0058] A multi-sided frustum refers to the portion of a pyramid that lies between the cut-off section and the base after it has been truncated by a plane parallel to its base. For example, a square frustum is a geometric solid that is the portion of a square pyramid that remains after its top has been removed by a plane parallel to its base.

[0059] Definition of a truncated square pyramid:

[0060] A truncated square pyramid is a three-dimensional geometric shape formed by cutting off the top of a square pyramid.

[0061] It has two parallel quadrilateral bases, a larger base and a smaller top, and four trapezoidal lateral faces connecting the two bases.

[0062] If the two faces of the frustum or the polygonal platform other than the side face are taken as the top and bottom faces, the face with the smaller area can be taken as the top face and the face with the larger area can be taken as the bottom face.

[0063] The inlet is located at the opening on the bottom surface of the truncated cone or polygonal platform, and is used to receive leaked liquid.

[0064] The leakage outlet is located at the opening on the top surface of the truncated cone or polygonal platform, and is used to discharge the collected leakage. The area of ​​the receiving port is larger than that of the leakage outlet.

[0065] Take a truncated pyramid as an example:

[0066] If we take the two faces of the truncated pyramid other than the side faces as the top and bottom faces, we can take the face with the smaller area as the top face and the face with the larger area as the bottom face.

[0067] The sides of the truncated pyramid form the leakage collection surface; the inlet is located on the larger bottom surface, and the outlet is located on the smaller top surface.

[0068] When the battery leaks, the liquid will drip from the inlet into the inside of the truncated pyramid.

[0069] Because the sides of the truncated pyramid are sloping, the leaked liquid will flow along the side outlet under the influence of gravity.

[0070] Difference in area between the inlet and outlet:

[0071] The inlet area is larger than the outlet area, which allows the leaked liquid to quickly collect at the outlet and be discharged more effectively.

[0072] By making the space occupied by the leakage collection surface a frustum or a polygonal platform, and the liquid inlet and the leakage outlet the top and bottom surfaces of the frustum or polygonal platform, and the area of ​​the liquid inlet being larger than that of the leakage outlet, the following beneficial effects can be achieved:

[0073] Highly efficient leak collection:

[0074] The inclined sides of a truncated cone or multi-sided platform can effectively guide the flow of leaking liquid, prevent liquid stagnation, and improve collection efficiency.

[0075] Rapid leakage drainage:

[0076] The leak outlet is located at a low position, which facilitates the rapid discharge of leaks and reduces the time that leaks remain in the collection device.

[0077] Improve detection sensitivity:

[0078] Because leaked liquid flows to the leak outlet more quickly, leak sensors can be more effectively arranged around the leak outlet based on this structure.

[0079] Structural strength:

[0080] The structure of a truncated cone or multi-sided platform has greater structural strength than a pure plane and can withstand greater liquid pressure.

[0081] refer to Figure 2 , Figure 2 This is a schematic diagram of another battery leakage collection device provided in an embodiment of the present invention.

[0082] For example, the main body 1 of the battery leakage collection device is divided into upper and lower layers. The upper layer is used for the convergence and detection of leakage, and the lower layer is used for the collection of leakage.

[0083] A leakage collection surface 2 with an inclined angle is provided on the main body 1. The leakage collection surface is designed as a four-cornered truncated pyramid structure that is wider at the top and narrower at the bottom. This structure design can increase the inclination angle of the initial contact surface between the leakage and the collection device, and facilitate the flow of leakage. The four-cornered truncated pyramid structure that is wider at the top and narrower at the bottom makes it easier for the leakage to collect at the leakage outlet 3 designed on the main body 1, and then flow into the lower leakage collection chamber 4 through the leakage outlet 3.

[0084] refer to Figure 3 , Figure 3 This is a schematic diagram of another battery leakage collection device provided in this embodiment of the present invention.

[0085] The base plate 5 is a drawer-type structure designed for leakage collection. A leakage collection tank 6 is installed on the base plate 5. When the base plate 5 is inserted into the leakage collection chamber 4, a complete leakage collection and detection unit can be assembled. That is, when the base plate is fully inserted into the opening of the leakage collection chamber 4, the leakage collection tank 6 is located directly below the leakage outlet 3.

[0086] The lifting handle 7 is the handle on the door of the collection compartment of the battery leakage collection device. The bottom plate 5 can be pulled out of the leakage collection compartment 4 through the battery leakage collection device 7.

[0087] With the above structure, once a leak occurs, it is easy to draw the leak to the leak outlet 3 and drip into the leak collection tank 6. Depending on the actual needs, a leak detection sensor can be installed in the leak outlet 3 and / or the leak collection tank 6. As long as the size of the leak outlet 3 and the leak collection tank 6 is designed to be as small and reasonable as possible, the time to detect the leak can be effectively shortened. Compared with the existing planar structure design, the leak detection rate is greatly increased.

[0088] Optionally, a leakage collection tank is provided at the bottom of the body, which is used to store battery leakage flowing out from the leakage outlet.

[0089] The battery leakage collection device has a two-layer structure.

[0090] Upper layer: Its main function is to collect and detect leaks. This means that the upper layer structure is specifically designed to guide the flow of leaking liquid and may be equipped with sensors or other detection devices to monitor leaks.

[0091] Lower layer: Its main function is to collect leaked liquid. The lower layer structure is designed to contain and store leaked liquid flowing down from the upper layer.

[0092] The battery leakage collection device has a leakage collection tank at the bottom of its main body.

[0093] The purpose of the leakage collection tank is to store battery leakage that flows out from the leakage outlet; that is, the liquid collected at the bottom will eventually converge into this tank.

[0094] The purpose of having a leakage collection tank at the bottom of the battery leakage collection device is:

[0095] A safe and effective battery leakage collection and treatment device is provided.

[0096] The layered structure enables effective drainage and detection of leaks, preventing leakage from spreading and improving safety.

[0097] By using leakage collection tanks, leakage can be centrally stored, facilitating subsequent treatment and reducing environmental pollution.

[0098] Beneficial effects:

[0099] Enhanced security:

[0100] The layered structure helps to detect and control leaks in a timely manner, reducing the impact of leaks on the surrounding environment and equipment.

[0101] The installation of a leakage collection tank prevents the leakage from spreading indiscriminately and reduces safety hazards.

[0102] Environmental protection:

[0103] Collecting leaked liquids centrally facilitates unified treatment and reduces pollution to soil, water sources, and other environmental factors.

[0104] Ease of maintenance:

[0105] The leakage collection tank can be easily disassembled and cleaned, facilitating maintenance and replacement.

[0106] This utility model embodiment achieves safe and efficient collection and treatment of battery leakage by setting a leakage collection tank at the bottom of the main body.

[0107] In an optional embodiment of this utility model, a leakage collection chamber is provided at the bottom of the main body, and the leakage collection tank is disposed on the bottom plate;

[0108] When the base plate is fully inserted into the opening of the leakage collection chamber, the leakage collection tank is located below the leakage outlet; a lifting handle is provided on the side of the base plate; a slide rail is provided on the bottom surface of the base plate. The purpose of this design is:

[0109] 1. Achieve effective collection of leaked liquid:

[0110] By setting a leakage collection chamber at the bottom of the main body, and in conjunction with a base plate and leakage collection tank, a complete leakage collection unit is constructed, which is designed to collect battery leakage liquid efficiently and safely.

[0111] Ensure precise alignment between the leak collection tank and the leak outlet so that the leak can flow accurately into the collection tank.

[0112] 2. Improve ease of operation:

[0113] The system features a lifting handle, allowing users to easily remove the base plate along with the leak collection tank from the leak collection chamber, facilitating the cleaning and handling of leaks.

[0114] The installation of sliding rails reduces friction when the base plate is dragged, making operation smoother.

[0115] The above design achieves the following beneficial effects:

[0116] Efficient leak collection:

[0117] The combination of the leak collection chamber, the base plate, and the leak collection tank forms an effective leak collection system that can quickly and accurately collect leaked liquid.

[0118] The precise positioning of the leakage collection tank and leakage outlet ensures effective collection of leakage and reduces the risk of leakage spread.

[0119] User-friendly interface:

[0120] The pull handle design allows users to easily remove and insert the leak collection unit, facilitating leak handling and device maintenance.

[0121] The slide rail design reduces friction during operation, improving smoothness and convenience.

[0122] Enhanced security:

[0123] Timely and effective collection of leaked liquids reduces the risk of damage to the surrounding environment and equipment, and improves the safety of the device.

[0124] By setting a leakage collection chamber at the bottom of the battery leakage collection device, and in conjunction with a base plate, leakage collection tank, lifting handle, and slide rail, this technical solution effectively improves the leakage collection efficiency, ease of operation, and detection sensitivity, enhances the safety of the device, and has significant practical application value.

[0125] refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a battery leakage collection device with multiple leakage collection tanks provided in this embodiment of the utility model;

[0126] Optionally, the top of the battery leakage collection device is provided with multiple liquid inlets, each of which is connected to the high potential energy end of an independent leakage collection surface, and the multiple liquid inlets correspond one-to-one with the multiple leakage collection surfaces.

[0127] refer to Figure 5 , Figure 5 This is a schematic diagram of another battery leakage collection device with multiple leakage collection tanks provided in this embodiment of the present invention.

[0128] Optionally, each of the independent leakage collection surfaces is provided with an independent leakage outlet at its low potential end.

[0129] Multiple leakage collection tanks are installed on the base plate. When the base plate is fully inserted into the opening of the leakage collection chamber, the multiple leakage collection tanks are located below the independent leakage outlets, and the positions of the multiple leakage collection tanks correspond one-to-one with the multiple independent leakage outlets.

[0130] In a specific implementation, this utility model embodiment can divide the top into multiple liquid inlets without changing the external structure of the main body. Each liquid inlet is connected to the high-potential end of an independent leakage collection surface, and the multiple liquid inlets correspond one-to-one with the multiple leakage collection surfaces. Each independent leakage collection surface has an independent leakage outlet at its low-potential end; a liquid inlet, a leakage collection surface, and a leakage outlet constitute an independent liquid receiving unit.

[0131] Multiple leakage collection tanks are installed on the base plate. When the base plate is fully inserted into the opening of the leakage collection chamber, the multiple leakage collection tanks are located at the lower end of the independent leakage outlet. The multiple leakage collection tanks correspond one-to-one with the multiple independent leakage outlets, that is, one leakage receiving unit is paired with one leakage collection tank.

[0132] The design purpose is to provide separate leakage collection tanks for multiple liquid receiving units.

[0133] Achieve independent and efficient collection of leaks from multiple points:

[0134] By dividing the top into multiple liquid inlets and corresponding them one by one with independent leakage collection surfaces, the design aims to achieve independent collection of multiple leakage points and avoid mutual interference between leakage points.

[0135] Each individual leakage collection surface has a high potential energy end and a low potential energy end, using the potential energy difference to guide the leakage to flow rapidly to the leakage outlet.

[0136] Improve the accuracy and reliability of leak collection:

[0137] Multiple leak collection tanks correspond one-to-one with multiple independent leak outlets, ensuring that the liquid collected from each leak point can accurately enter the corresponding collection tank.

[0138] While keeping the external structure of the device unchanged, the internal structure is optimized to improve the integration and reliability of the device.

[0139] Facilitates the sorting, collection, and treatment of leaked liquids:

[0140] Multiple independent leakage collection tanks can be used to classify and collect leakage of different properties, which facilitates subsequent classification, treatment and recycling.

[0141] Beneficial effects:

[0142] Improve leakage collection efficiency:

[0143] Multiple inlets and independent leakage collection surfaces enable simultaneous collection of liquid from multiple leakage points, improving overall collection efficiency.

[0144] By utilizing the potential energy difference to guide the flow of the leaking liquid, the collection process of the leaking liquid is accelerated.

[0145] Enhance the targeted nature of leak collection:

[0146] Each leak point has its own independent collection channel and collection tank, which avoids mixing of leaks and improves the targeted nature of collection.

[0147] Improve the accuracy of leak detection:

[0148] Because the leaked liquid is collected independently, it can be used in conjunction with a leak detection sensor to more accurately pinpoint the location of the leak.

[0149] Simplify the leakage handling process:

[0150] Collecting leaked liquid separately facilitates subsequent sorting, processing, and recycling, simplifying the process and improving efficiency.

[0151] Enhance the integration and reliability of the device:

[0152] Without altering the external structure of the device, the internal structure was optimized, improving the device's integration and reliability.

[0153] By independently equipping multiple liquid receiving units with corresponding leakage collection tanks, independent and efficient collection of leakage from multiple points is achieved, improving the accuracy and reliability of leakage collection, simplifying the leakage handling process, and enhancing the integration and reliability of the device, which has significant practical application value.

[0154] Optionally, a leakage detection sensor is provided at the bottom of the leakage outlet and / or the leakage collection container.

[0155] For leakage collection, there are two scenarios depending on the actual needs:

[0156] 1. After detecting a leak, manually remove the leaking liquid from the collection tank;

[0157] 2. An automatic drain valve is installed at the bottom of the leakage collection tank 6, and it can be connected to an external pumping device through a pipeline. A liquid level sensor is installed on the side wall of the leakage collection tank 6. When the liquid level sensor detects that the leakage level has reached the preset height of the liquid level sensor on the inner wall of the collection tank, the automatic drain valve opens and the leakage is discharged to an external large-capacity liquid collection device for recycling in a timely manner, realizing fully automated processing of leakage from detection to collection to discharge.

[0158] Option 1: Manually remove the leaking liquid

[0159] Purpose:

[0160] This provides a simple and economical method for handling leaks, suitable for situations where the amount of leakage is small and the frequency of occurrence is low.

[0161] It allows maintenance personnel to visually observe and analyze leaks, helping to determine the cause and extent of the leak.

[0162] Beneficial effects:

[0163] It has a low cost and does not require complex automated equipment.

[0164] It is simple to operate and easy to maintain.

[0165] It can detect leaks in a timely manner and prevent them from spreading.

[0166] Option 2: Automatic drainage of leaking liquid

[0167] Purpose:

[0168] To automate the handling of leaks, reduce manual intervention, and improve operational efficiency.

[0169] Suitable for applications with large leakage volume, high frequency of leakage, or long-term unattended operation.

[0170] Minimize the impact of leaks on equipment and the environment.

[0171] Beneficial effects:

[0172] High degree of automation reduces operation and maintenance costs.

[0173] It has a fast response time and can promptly drain leaks to prevent them from overflowing.

[0174] It offers high safety and reduces the risk of maintenance personnel coming into contact with corrosive liquids.

[0175] It can be connected to an external large-capacity liquid collection device through pipelines, which can collect corrosive liquids more safely and conveniently.

[0176] By using liquid level sensors and automatic drain valves, real-time monitoring and automatic handling of leaks can be achieved, enabling fully automated handling from detection to collection to discharge, thus improving the overall level of automation.

[0177] This utility model embodiment also discloses an electrical energy storage system, including: a battery and the above-mentioned battery leakage collection device, wherein the battery leakage collection device is placed at the bottom of the battery.

[0178] refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a battery leakage collection device provided in an embodiment of the present invention;

[0179] The battery leakage collection device has a liquid inlet 102 on the top of its main body 101. The main body 101 includes a leakage collection surface 103, and the liquid inlet 102 is connected to the high potential energy end of the leakage collection surface 103.

[0180] The low-potential end of the leakage collection surface 103 is provided with a leakage outlet 104.

[0181] In a specific implementation, the main body can be the main structure of a leak collection device, used to receive and collect leaked liquid. For example, the main body can be divided into two layers: the upper layer is used for the convergence and detection of leaks, and the lower layer is used for the collection and detection of leaks. That is, the location and number of detection devices can be different, and this embodiment of the present invention does not limit this.

[0182] The inlet can be located at the opening on the top of the body to receive dripping leaked liquid.

[0183] The leak collection surface can be an inclined surface inside the body, used to guide the flow of leaking liquid.

[0184] High potential end: The higher position of the leakage collection surface.

[0185] Low potential end: The lower part of the leakage collection surface.

[0186] In a specific implementation, the leakage collection surface of this utility model embodiment is not parallel to the horizontal plane. Battery leakage can flow on the leakage collection surface due to gravity, and the flow direction can be from the high potential energy end to the low potential energy end until it reaches the leakage outlet.

[0187] Leakage outlet: An opening located at the low potential energy end of the leakage collection surface, used to discharge the collected leaked liquid.

[0188] For example, such a leakage collection device is installed below a flow battery stack. When a leak occurs inside the stack, electrolyte drips from the leak point.

[0189] The leaked electrolyte enters the body of the leakage collection device through the inlet.

[0190] Because the leakage collection surface is inclined, the electrolyte will flow from the high potential energy end to the low potential energy end under the action of gravity.

[0191] All electrolyte that drips onto the leakage collection surface will converge at the leakage outlet at the low potential end.

[0192] The collected electrolyte can be discharged through the leakage outlet for recycling or treatment.

[0193] Its advantages over related technologies are:

[0194] Efficient collection and detection:

[0195] The inclined leak collection surface design ensures that leaked liquid can flow quickly and effectively and be concentrated at the leak outlet, reducing the amount of liquid remaining on the surface of the collection device.

[0196] Compared to planar collection devices, the inclined design allows the liquid to flow to the low potential end more quickly. Therefore, if the sensor is placed at the low potential end, this structure is beneficial for detecting leaks more promptly.

[0197] Simplify operations and maintenance:

[0198] The leak outlet allows for easy discharge of collected leaked liquid, reducing the tedious manual handling of leaks and lowering the workload for maintenance personnel.

[0199] Reduce the risk of liquid leakage and damage to components around the fuel cell stack.

[0200] Improve security:

[0201] The ability to quickly and effectively collect and drain leaked liquids helps to detect and handle leaks in a timely manner, reducing the risk of fuel cell damage and safety incidents.

[0202] By providing a liquid inlet at the top of the battery leakage collection device body, the body includes a leakage collection surface, and the liquid inlet is connected to the high-potential end of the leakage collection surface; a leakage outlet is provided at the low-potential end of the leakage collection surface; this battery leakage collection device with an inclined leakage collection surface, through optimized structural design, improves the efficiency of leakage collection and detection, simplifies operation and maintenance, enhances safety, and overcomes the problems of leakage retention, difficult detection, and large maintenance workload caused by planar design in the prior art.

[0203] Based on the above embodiments, modified embodiments of the above embodiments are proposed. It should be noted that, in order to keep the description brief, only the differences from the above embodiments are described in the modified embodiments.

[0204] Optionally, the space occupied by the leakage collection surface is a frustum or a polygonal platform, the liquid inlet and the leakage outlet are the top and bottom surfaces of the frustum or the polygonal platform, and the area of ​​the liquid inlet is larger than that of the leakage outlet.

[0205] In this embodiment of the invention, the leakage collection surface refers to the surface that collects leakage. This surface may not be a simple plane, but a three-dimensional structure with a specific shape.

[0206] A frustum of a cone is the portion of a cone that is truncated by a plane parallel to its base, located between the truncated section and the base. It has two parallel circular bases, a larger base and a smaller top, and a lateral surface connecting the two bases.

[0207] A multi-sided frustum refers to the portion of a pyramid that lies between the cut-off section and the base after it has been truncated by a plane parallel to its base. For example, a square frustum is a geometric solid that is the portion of a square pyramid that remains after its top has been removed by a plane parallel to its base.

[0208] Definition of a truncated square pyramid:

[0209] A truncated square pyramid is a three-dimensional geometric shape formed by cutting off the top of a square pyramid.

[0210] It has two parallel quadrilateral bases, a larger base and a smaller top, and four trapezoidal lateral faces connecting the two bases.

[0211] If the two faces of the frustum or the polygonal platform other than the side face are taken as the top and bottom faces, the face with the smaller area can be taken as the top face and the face with the larger area can be taken as the bottom face.

[0212] The inlet is located at the opening on the bottom surface of the truncated cone or polygonal platform, and is used to receive leaked liquid.

[0213] The leakage outlet is located at the opening on the top surface of the truncated cone or polygonal platform, and is used to discharge the collected leakage. The area of ​​the receiving port is larger than that of the leakage outlet.

[0214] Take a truncated pyramid as an example:

[0215] If we take the two faces of the truncated pyramid other than the side faces as the top and bottom faces, we can take the face with the smaller area as the top face and the face with the larger area as the bottom face.

[0216] The sides of the truncated pyramid form the leakage collection surface; the inlet is located on the larger bottom surface, and the outlet is located on the smaller top surface.

[0217] When the battery leaks, the liquid will drip from the inlet into the inside of the truncated pyramid.

[0218] Because the sides of the truncated pyramid are sloping, the leaked liquid will flow along the side outlet under the influence of gravity.

[0219] Difference in area between the inlet and outlet:

[0220] The inlet area is larger than the outlet area, which allows the leaked liquid to quickly collect at the outlet and be discharged more effectively.

[0221] By making the space occupied by the leakage collection surface a frustum or a polygonal platform, and the liquid inlet and the leakage outlet the top and bottom surfaces of the frustum or polygonal platform, and the area of ​​the liquid inlet being larger than that of the leakage outlet, the following beneficial effects can be achieved:

[0222] Highly efficient leak collection:

[0223] The inclined sides of a truncated cone or multi-sided platform can effectively guide the flow of leaking liquid, prevent liquid stagnation, and improve collection efficiency.

[0224] Rapid leakage drainage:

[0225] The leak outlet is located at a low position, which facilitates the rapid discharge of leaks and reduces the time that leaks remain in the collection device.

[0226] Improve detection sensitivity:

[0227] Because leaked liquid flows to the leak outlet more quickly, leak sensors can be more effectively arranged around the leak outlet based on this structure.

[0228] Structural strength:

[0229] The structure of a truncated cone or multi-sided platform has greater structural strength than a pure plane and can withstand greater liquid pressure.

[0230] refer to Figure 2 , Figure 2 This is a schematic diagram of another battery leakage collection device provided in an embodiment of the present invention.

[0231] For example, the main body 1 of the battery leakage collection device is divided into upper and lower layers. The upper layer is used for the convergence and detection of leakage, and the lower layer is used for the collection of leakage.

[0232] A leakage collection surface 2 with an inclined angle is provided on the main body 1. The leakage collection surface is designed as a four-cornered truncated pyramid structure that is wider at the top and narrower at the bottom. This structure design can increase the inclination angle of the initial contact surface between the leakage and the collection device, and facilitate the flow of leakage. The four-cornered truncated pyramid structure that is wider at the top and narrower at the bottom makes it easier for the leakage to collect at the leakage outlet 3 designed on the main body 1, and then flow into the lower leakage collection chamber 4 through the leakage outlet 3.

[0233] refer to Figure 3 , Figure 3 This is a schematic diagram of another battery leakage collection device provided in this embodiment of the present invention.

[0234] The base plate 5 is a drawer-type structure designed for leakage collection. A leakage collection tank 6 is installed on the base plate 5. The base plate 5 is inserted into the leakage collection chamber 4 to assemble a complete leakage collection and detection unit. That is, when the base plate is fully inserted into the opening of the leakage collection chamber 4, the leakage collection tank 6 is located directly below the leakage outlet 3.

[0235] The lifting handle 7 is the handle on the door of the collection compartment of the battery leakage collection device. The bottom plate 5 can be pulled out of the leakage collection compartment 4 through the battery leakage collection device 7.

[0236] With the above structure, once a leak occurs, it is easy to draw the leak to the leak outlet 3 and drip into the leak collection tank 6. Depending on the actual needs, a leak detection sensor can be installed in the leak outlet 3 and / or the leak collection tank 6. As long as the size of the leak outlet 3 and the leak collection tank 6 is designed to be as small and reasonable as possible, the time to detect the leak can be effectively shortened. Compared with the existing planar structure design, the leak detection rate is greatly increased.

[0237] Optionally, a leakage collection tank is provided at the bottom of the body, which is used to store battery leakage flowing out from the leakage outlet.

[0238] The battery leakage collection device has a two-layer structure.

[0239] Upper layer: Its main function is to collect and detect leaks. This means that the upper layer structure is specifically designed to guide the flow of leaking liquid and may be equipped with sensors or other detection devices to monitor leaks.

[0240] Lower layer: Its main function is to collect leaked liquid. The lower layer structure is designed to contain and store leaked liquid flowing down from the upper layer.

[0241] The battery leakage collection device has a leakage collection tank at the bottom of its main body.

[0242] The purpose of the leakage collection tank is to store battery leakage that flows out from the leakage outlet; that is, the liquid collected at the bottom will eventually converge into this tank.

[0243] The purpose of having a leakage collection tank at the bottom of the battery leakage collection device is:

[0244] A safe and effective battery leakage collection and treatment device is provided.

[0245] The layered structure enables effective drainage and detection of leaks, preventing leakage from spreading and improving safety.

[0246] By using leakage collection tanks, leakage can be centrally stored, facilitating subsequent treatment and reducing environmental pollution.

[0247] Beneficial effects:

[0248] Enhanced security:

[0249] The layered structure helps to detect and control leaks in a timely manner, reducing the impact of leaks on the surrounding environment and equipment.

[0250] The installation of a leakage collection tank prevents the leakage from spreading indiscriminately and reduces safety hazards.

[0251] Environmental protection:

[0252] Collecting leaked liquids centrally facilitates unified treatment and reduces pollution to soil, water sources, and other environmental factors.

[0253] Ease of maintenance:

[0254] The leakage collection tank can be easily disassembled and cleaned, facilitating maintenance and replacement.

[0255] This utility model embodiment achieves safe and efficient collection and treatment of battery leakage by setting a leakage collection tank at the bottom of the main body.

[0256] In an optional embodiment of this utility model, a leakage collection chamber is provided at the bottom of the main body, and the leakage collection tank is disposed on the bottom plate;

[0257] When the base plate is fully inserted into the opening of the leakage collection chamber, the leakage collection tank is located below the leakage outlet; a lifting handle is provided on the side of the base plate; a slide rail is provided on the bottom surface of the base plate. The purpose of this design is:

[0258] 1. Achieve effective collection of leaked liquid:

[0259] By setting a leakage collection chamber at the bottom of the main body, and in conjunction with a base plate and leakage collection tank, a complete leakage collection unit is constructed, which is designed to collect battery leakage liquid efficiently and safely.

[0260] Ensure precise alignment between the leak collection tank and the leak outlet so that the leak can flow accurately into the collection tank.

[0261] 2. Improve ease of operation:

[0262] The system features a lifting handle, allowing users to easily remove the base plate along with the leak collection tank from the leak collection chamber, facilitating the cleaning and handling of leaks.

[0263] The installation of sliding rails reduces friction when the base plate is dragged, making operation smoother.

[0264] The above design achieves the following beneficial effects:

[0265] Efficient leak collection:

[0266] The combination of the leak collection chamber, the base plate, and the leak collection tank forms an effective leak collection system that can quickly and accurately collect leaked liquid.

[0267] The precise positioning of the leakage collection tank and leakage outlet ensures effective collection of leakage and reduces the risk of leakage spread.

[0268] User-friendly interface:

[0269] The pull handle design allows users to easily remove and insert the leak collection unit, facilitating leak handling and device maintenance.

[0270] The slide rail design reduces friction during operation, improving smoothness and convenience.

[0271] Enhanced security:

[0272] Timely and effective collection of leaked liquids reduces the risk of damage to the surrounding environment and equipment, and improves the safety of the device.

[0273] By setting a leakage collection chamber at the bottom of the battery leakage collection device, and in conjunction with a base plate, leakage collection tank, lifting handle, and slide rail, this technical solution effectively improves the leakage collection efficiency, ease of operation, and detection sensitivity, enhances the safety of the device, and has significant practical application value.

[0274] refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a battery leakage collection device with multiple leakage collection tanks provided in this embodiment of the utility model;

[0275] Optionally, the top of the battery leakage collection device is provided with multiple liquid inlets, each of which is connected to the high potential energy end of an independent leakage collection surface, and the multiple liquid inlets correspond one-to-one with the multiple leakage collection surfaces.

[0276] refer to Figure 5 , Figure 5 This is a schematic diagram of another battery leakage collection device with multiple leakage collection tanks provided in this embodiment of the present invention.

[0277] Optionally, each of the independent leakage collection surfaces is provided with an independent leakage outlet at its low potential end.

[0278] Multiple leakage collection tanks are installed on the base plate. When the base plate is fully inserted into the opening of the leakage collection chamber, the multiple leakage collection tanks are located below the independent leakage outlets, and the positions of the multiple leakage collection tanks correspond one-to-one with the multiple independent leakage outlets.

[0279] In a specific implementation, this utility model embodiment can divide the top into multiple liquid inlets without changing the external structure of the main body. Each liquid inlet is connected to the high-potential end of an independent leakage collection surface, and the multiple liquid inlets correspond one-to-one with the multiple leakage collection surfaces. Each independent leakage collection surface has an independent leakage outlet at its low-potential end; a liquid inlet, a leakage collection surface, and a leakage outlet constitute an independent liquid receiving unit.

[0280] Multiple leakage collection tanks are installed on the base plate. When the base plate is fully inserted into the opening of the leakage collection chamber, the multiple leakage collection tanks are located at the lower end of the independent leakage outlet. The multiple leakage collection tanks correspond one-to-one with the multiple independent leakage outlets, that is, one leakage receiving unit is paired with one leakage collection tank.

[0281] The design purpose is to provide separate leakage collection tanks for multiple liquid receiving units.

[0282] Achieve independent and efficient collection of leaks from multiple points:

[0283] By dividing the top into multiple liquid inlets and corresponding them one by one with independent leakage collection surfaces, the design aims to achieve independent collection of multiple leakage points and avoid mutual interference between leakage points.

[0284] Each individual leakage collection surface has a high potential energy end and a low potential energy end, using the potential energy difference to guide the leakage to flow rapidly to the leakage outlet.

[0285] Improve the accuracy and reliability of leak collection:

[0286] Multiple leak collection tanks correspond one-to-one with multiple independent leak outlets, ensuring that the liquid collected from each leak point can accurately enter the corresponding collection tank.

[0287] While keeping the external structure of the device unchanged, the internal structure is optimized to improve the integration and reliability of the device.

[0288] Facilitates the sorting, collection, and treatment of leaked liquids:

[0289] Multiple independent leakage collection tanks can be used to classify and collect leakage of different properties, which facilitates subsequent classification, treatment and recycling.

[0290] Beneficial effects:

[0291] Improve leakage collection efficiency:

[0292] Multiple inlets and independent leakage collection surfaces enable simultaneous collection of liquid from multiple leakage points, improving overall collection efficiency.

[0293] By utilizing the potential energy difference to guide the flow of the leaking liquid, the collection process of the leaking liquid is accelerated.

[0294] Enhance the targeted nature of leak collection:

[0295] Each leak point has its own independent collection channel and collection tank, which avoids mixing of leaks and improves the targeted nature of collection.

[0296] Improve the accuracy of leak detection:

[0297] Because the leaked liquid is collected independently, it can be used in conjunction with a leak detection sensor to more accurately pinpoint the location of the leak.

[0298] Simplify the leakage handling process:

[0299] Collecting leaked liquid separately facilitates subsequent sorting, processing, and recycling, simplifying the process and improving efficiency.

[0300] Enhance the integration and reliability of the device:

[0301] Without altering the external structure of the device, the internal structure was optimized, improving the device's integration and reliability.

[0302] By independently equipping multiple liquid receiving units with corresponding leakage collection tanks, independent and efficient collection of leakage from multiple points is achieved, improving the accuracy and reliability of leakage collection, simplifying the leakage handling process, and enhancing the integration and reliability of the device, which has significant practical application value.

[0303] Optionally, a leakage detection sensor is provided at the bottom of the leakage outlet and / or the leakage collection container.

[0304] For leakage collection, there are two scenarios depending on the actual needs:

[0305] 1. After detecting a leak, manually remove the leaking liquid from the collection tank;

[0306] 2. An automatic drain valve is installed at the bottom of the leakage collection tank 6, and it can be connected to an external pumping device through a pipeline. A liquid level sensor is installed on the side wall of the leakage collection tank 6. When the liquid level sensor detects that the leakage level has reached the preset height of the liquid level sensor on the inner wall of the collection tank, the automatic drain valve opens and the leakage is discharged to an external large-capacity liquid collection device for recycling in a timely manner, realizing fully automated processing of leakage from detection to collection to discharge.

[0307] Option 1: Manually remove the leaking liquid

[0308] Purpose:

[0309] This provides a simple and economical method for handling leaks, suitable for situations where the amount of leakage is small and the frequency of occurrence is low.

[0310] It allows maintenance personnel to visually observe and analyze leaks, helping to determine the cause and extent of the leak.

[0311] Beneficial effects:

[0312] It has a low cost and does not require complex automated equipment.

[0313] It is simple to operate and easy to maintain.

[0314] It can detect leaks in a timely manner and prevent them from spreading.

[0315] Option 2: Automatic drainage of leaking liquid

[0316] Purpose:

[0317] To automate the handling of leaks, reduce manual intervention, and improve operational efficiency.

[0318] Suitable for applications with large leakage volume, high frequency of leakage, or long-term unattended operation.

[0319] Minimize the impact of leaks on equipment and the environment.

[0320] Beneficial effects:

[0321] High degree of automation reduces operation and maintenance costs.

[0322] It has a fast response time and can promptly drain leaks to prevent them from overflowing.

[0323] It offers high safety and reduces the risk of maintenance personnel coming into contact with corrosive liquids.

[0324] It can be connected to an external large-capacity liquid collection device through pipelines, which can collect corrosive liquids more safely and conveniently.

[0325] By using liquid level sensors and automatic drain valves, real-time monitoring and automatic handling of leaks can be achieved, enabling fully automated handling from detection to collection to discharge, thus improving the overall level of automation.

[0326] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0327] The battery leakage collection device and energy storage system provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery liquid leakage collecting device characterized by comprising: The battery leakage collection device has a liquid inlet on the top of its main body, and the main body includes a leakage collection surface. The liquid inlet is connected to the high potential energy end of the leakage collection surface. The low-potential end of the leakage collection surface is provided with a leakage outlet.

2. The battery fluid leak collection device of claim 1, wherein, The space occupied by the leakage collection surface is a frustum or a polygonal platform. The liquid inlet and the leakage outlet are the top and bottom surfaces of the frustum or the polygonal platform, respectively. The area of ​​the liquid inlet is larger than that of the leakage outlet.

3. The battery fluid leak collection device of claim 1, wherein, The bottom of the main body is provided with a leakage collection tank, which is used to store battery leakage that flows out from the leakage outlet.

4. The battery fluid leak collection device of claim 3, wherein, The bottom of the main body is provided with a leakage collection chamber, and the leakage collection tank is set on the bottom plate; When the base plate is fully inserted into the opening of the leakage collection chamber, the leakage collection tank is located below the leakage outlet.

5. The battery fluid leak collection device of claim 4, wherein, The bottom plate is provided with a lifting handle on its side.

6. The battery fluid leak collection device of claim 5, wherein, The bottom surface of the base plate is provided with a slide rail.

7. The battery fluid leak collection device of claim 6, wherein, The battery leakage collection device has multiple liquid inlets on its top body. Each liquid inlet is connected to the high-potential end of an independent leakage collection surface, and the multiple liquid inlets correspond one-to-one with the multiple leakage collection surfaces.

8. The battery fluid leak collection device of claim 7, wherein, Each of the independent leakage collection surfaces is provided with an independent leakage outlet at its low potential energy end. Multiple leakage collection tanks are installed on the base plate. When the base plate is fully inserted into the opening of the leakage collection chamber, the multiple leakage collection tanks are located below the independent leakage outlets, and the positions of the multiple leakage collection tanks correspond one-to-one with the multiple independent leakage outlets.

9. The battery fluid leak collection device of any one of claims 1-8, wherein, The leakage outlet and / or the leakage collection container is provided with a leakage detection sensor at the bottom.

10. An electrical energy storage system, characterized by include: A battery and a battery leakage collection device, wherein the top of the main body of the battery leakage collection device is provided with a liquid inlet, the main body includes a leakage collection surface, and the liquid inlet is connected to the high potential energy end of the leakage collection surface. The low-potential end of the leakage collection surface is provided with a leakage outlet.

11. The electrical energy storage system of claim 10, wherein, The space occupied by the leakage collection surface is a frustum or a polygonal platform. The liquid inlet and the leakage outlet are the top and bottom surfaces of the frustum or the polygonal platform, respectively. The area of ​​the liquid inlet is larger than that of the leakage outlet.

12. The electrical energy storage system of claim 10, wherein, The bottom of the main body is provided with a leakage collection tank, which is used to store battery leakage that flows out from the leakage outlet.

13. The electrical energy storage system of claim 12, wherein, The bottom of the main body is provided with a leakage collection chamber, and the leakage collection tank is set on the bottom plate; When the base plate is fully inserted into the opening of the leakage collection chamber, the leakage collection tank is located below the leakage outlet.

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