Battery leakage collection device and electrical energy storage system

Abstract

A battery leakage collection device, characterized in that the battery leakage collection device is provided with a leakage collection opening on an upper side of a base body, wherein the base body comprises a leakage collection surface, wherein the leakage collection opening is connected to a higher end of the leakage collection surface; wherein the leakage collection surface is provided with a leakage guide outlet at a lower end.

Description

TECHNICAL FIELDThe present invention relates to the technical field of battery manufacture, and more particularly to a battery leak collector and an electric power storage system.PRIOR ARTIn the field of electrochemical energy storage technology, liquid flow batteries have shown significant advantages in long life, large-scale energy storage applications due to their high safety, long life, design flexibility, and low overall cost of electricity. A typical system of liquid flow batteries is composed of a power unit (battery stack), a capacity unit (positive and negative electrolyte storage container), a piping system, a circulation system, and a battery management system. The battery pack is connected to the storage container through piping, and the charge and discharge operation of the battery is realized by a circulation pump. However, due to the unique system structure and bonding method, it is difficult to completely avoid the risk of electrolyte leakage. Potential leakage points are located primarily in the welds of the storage container, the pipe connections, the sensor connections and the battery stack itself. The battery stack, as the core piece of the liquid flow battery, is made up of a plurality of parts stacked and connected to each other. Mechanical failures such as deformation or damage to internal components during assembly or operation can result in the battery pack leaking. In the existing technology, since liquid flow batteries generally use an etching conductive electrolyte, a leak collecting gutter or a leak collecting tub of a certain size is mainly installed below the battery stack to prevent leaks from interfering with system operation, safety of personnel and environment and leading to safety accidents. However, the construction of the existing battery leak collecting apparatus and leak detection solution is poor, and the surface is mostly flat, which is not conducive to the recovery and treatment of the leaked liquid.CONTENT OF THE PRESENT INVENTIONIn view of the above problems, the present invention provides a battery leak collector capable of overcoming or at least partially solving the above problems, the battery leak collector is provided with a leak collecting hole on an upper surface of a base body, the base body includes a leak collecting surface, the leak collecting hole being connected to a higher end of the leak collecting surface, the leak collecting surface being provided with a leak guiding outlet at a lower end.Optionally, a space portion occupied by the leakage collecting surface is a conical table or a polygonal side table, wherein the leakage collecting opening and the leakage guide outlet serve as an upper or lower surface of the conical table or the polygonal side table, and wherein the leakage collecting opening has a larger area than the leakage guide outlet.Optionally, the base body is provided on an underside with a leakage collecting container, wherein the leakage collecting container serves to store the battery leaks which flow out of the leakage guide outlet.Optionally, the base body is provided on the underside with a leakage collecting reservoir, wherein the leakage collecting reservoir is arranged on a base plate;wherein, when the bottom plate fully enters an opening of the leakage header, the leakage header is located at a lower end of the leakage guiding outlet.Optionally, the base plate is provided with a pull handle on one side.Optionally, the bottom plate is provided with a slide rail on a lower surface.Optionally, the main body of the battery leak collector is provided with a plurality of leak collecting holes on the upper side, each of the leak collecting holes being connected to a higher end of the independent leak collecting surface, and the plurality of leak collecting holes being coincident one-to-one with the plurality of leak collecting surfaces.Optionally, any one of the independent leakage collecting surfaces is provided with an independent leakage guiding outlet at a lower end; a plurality of leakage collecting containers are arranged on a bottom plate, wherein, when the bottom plate fully enters an opening of the leakage collecting container, a plurality of the leakage collecting containers are located at a lower end of the independent leakage guiding outlets, wherein the plurality of leakage collecting containers coincide one-to-one with the plurality of independent leakage guiding outlets.Optionally, the leakage guide outlet and / or the leakage collecting container is provided on the underside with a leakage detection sensor.The utility model discloses an electric energy storage system comprising a battery and a battery leak collector as described above, the battery leak collector being disposed on the underside of the battery.The embodiment of the present invention has the following advantages:The battery leak collecting device is provided with a leak collecting opening on an upper surface of a base body, the base body including a leak collecting surface, the leak collecting opening being connected to a higher-positioned end of the leak collecting surface. This battery leak collector is provided with an inclined leak collector surface that achieves convergence of the leaks and improves the efficiency of the leak collection by optimizing the construction.BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a schematic diagram showing the structure of a battery leak collector according to an embodiment of the present invention; FIG. 2 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention; FIG. 3 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention; FIG. 4 is a schematic diagram showing the structure of a battery leak collector having a plurality of leak collecting containers according to an embodiment of the present invention; FIG. 5 is a schematic diagram showing the structure of a battery leak collecting apparatus having a plurality of leak collecting containers according to another embodiment of the present invention.DETAILED DESCRIPTIONThe technical solutions in the embodiments of the present application will be clearly and fully described below in conjunction with the accompanying drawings in the embodiments of the present application. It goes without saying that the described exemplary embodiments are only a part of the exemplary embodiments of the present application, but not all of the embodiments. Starting from the embodiments of the present application, all other embodiments that a person skilled in the art can produce without any creative work fall within the scope of protection of the present utility model.The embodiment of the technical solution of the present application will be described in detail below in conjunction with the attached drawings.In practice, the prior art leak collector device usually assumes a planar construction having the following three major deficiencies: 1. stagnant leak, difficult detection and recovery: The planar structure results in the leaking liquid being difficult to flow, which is not conducive to rapid detection and efficient recovery and processing. 2. low sensor sensitivity, no timely leak detection: Existing collection devices with a flat construction have a large area, and the device only has a small number of point sensors arranged on the surface or on the edge. When a small amount of liquid leaks out, it is difficult to quickly contact the sensor, which results in failure to detect the leakage of the battery pack in time, which makes it impossible for the operating and maintenance personnel to detect and remedy the leakage in time, which may result in a decrease in power output of the power plant, damage, etc., and increase the risk of safety accidents. 3. High labor for maintenance and risk of spillage: Existing collection devices must rely on manual suction devices to drain or retrieve drained liquid and must perform surface cleaning, which greatly increases the labor for the operators and maintenance personnel.In addition, when large amounts of liquid are suddenly discharged, the operating and maintenance personnel cannot eliminate the leakage in good time, which can lead to an overflow of the leaks and damage to the surrounding components of the power plant, which in turn makes maintenance more difficult and causes economic losses.FIG. 1 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention.The battery leak collecting device is provided with a leak collecting opening 102 on an upper surface of a base body 101, the base body 101 includes a leak collecting surface 103, the leak collecting opening 102 being connected to a higher-side end of the leak collecting surface 103.The leakage collecting surface 103 is provided at a lower end with a leakage guide outlet 104.In a provided embodiment, the base body can represent a main structure of the battery leak collecting device, which serves for receiving and collecting the leak liquid. For example, the base body may be divided into a top layer structure and a bottom layer structure, the top layer serving for convergence and detection of the leaks, and the bottom layer serving for collection and detection of the leaks, i.e., the position and the number of detection devices cannot be clearly determined. The embodiments of the present invention do not limit this.The leakage collecting opening can be arranged in an opening on the upper side of the base body in order to collect dripping leakage liquid.The leakage collecting surface may be an inclined surface inside the main body to guide the flow of the leakage liquid.Higher end: a higher position or high-energy-potent position of the leakage collecting surface.Lower end: a lower position or energy-low-potential position of the leakage collecting surface.In a concrete embodiment, the leak collecting surface according to the embodiments of the present invention is not parallel to the horizontal plane, the battery leak may flow on the leak collecting surface due to gravity, and the flow direction may be along a direction from the higher end to the lower end until it reaches the leak guiding outlet.Leakage guiding outlet: an opening at the lower end of the leakage collecting surface for discharging the collected leakage liquid.For example, such a battery leak collector is installed below a battery stack of liquid flow batteries. When a leak occurs within the battery pack, electrolyte drips from the leak point.The leaked electrolyte enters the interior of the main body of the battery leak collector through the leak collecting hole.Since the leakage collecting surface is inclined, the electrolyte flows along the inclined surface from the higher end to the lower end due to gravity.All the electrolyte dripping onto the leakage collecting surface flows to the leakage guiding outlet at the lower end.Through the leakage guiding outlet, the collected electrolyte can be drained for recovery or disposal.Advantages compared to the prior art:High Efficiency Collection and Recognition:The construction of the inclined leakage collecting surface ensures that the leakage liquid can flow quickly and efficiently and concentrate at the leakage guide outlet, thereby reducing stagnation of the liquid on the surface of the collecting device.The inclined construction allows the liquid to flow more quickly to the lower end than in a flat collection device, so that the structure facilitates timely detection of leaks when sensors are arranged at the lower end.Simplified Operation Management and Maintenance:Through the leakage guiding outlet, the collected leakage liquid can be easily discharged, which reduces the cumbersome manual handling of the leakage liquid and reduces the workload of the operating and maintenance personnel.The risk of spilling and damage to components in the environment of the battery pack is reduced.Improvement of Safety:The rapid and efficient collection and discharge of the leakage liquid helps to detect and remedy the leakage accident in good time and reduces the risk of damage to the battery stack and safety accidents.The battery leak collecting device is provided with a leak collecting opening on an upper surface of a base body, the base body including a leak collecting surface, the leak collecting opening being connected to a higher-positioned end of the leak collecting surface. This battery leak collector is provided with an inclined leak collector surface and improves the efficiency of collecting and detecting leaks, simplifies the operation and maintenance, increases the safety by optimizing the construction, and overcomes the problems of stagnation of leaks, detection difficulties, and large operation and maintenance costs caused by the planar construction of the prior art.Based on the above embodiment, a variant embodiment of the above embodiment is proposed, and it should be noted here that only the differences from the above embodiment are described in the variant embodiment in order to keep the description short.Optionally, a space portion occupied by the leakage collecting surface is a conical table or a polygonal side table, the leakage collecting opening and the leakage guide outlet serve as an upper or lower surface of the conical table or the polygonal side table, and the leakage collecting opening has a larger area than the leakage guide outlet.In the embodiments of the present invention, the leakage collecting surface refers to a surface that collects leaks. This surface is not limited to a simple flat surface, but may be a three-dimensional structure having a certain shape.The conical table refers to the part of a cone that lies between the cross section and the lower surface after it has been cut off by a plane parallel to its lower surface. It comprises two mutually parallel circular lower surfaces, a larger lower surface and a smaller upper surface, and further sides connecting the two lower surfaces to each other.A polygonal side table is the part of a prism which lies between the cross section and the lower surface after it has been cut off by a plane parallel to its lower surface, for example a quadrangular conical table. This is a geometry that is the part of a quadrangular cone that remains after the tip has been cut off by a plane parallel to the bottom surface.Definition of the square conical table:A quadrangular cone-shaped table is a three-dimensional geometry formed by cutting the tip of a quadrangular cone.It comprises two mutually parallel circular lower surfaces, a larger lower surface and a smaller upper surface, and further four trapezoidal sides connecting the two lower surfaces to each other.When the two surfaces of the conical table or the polygonal side table except for the sides are used as upper and lower surfaces, the smaller surface may be used as the upper surface and the larger surface as the lower surface.A leak collecting hole is provided in a hole in the lower surface of the conical table or the polygonal side table for receiving the leak.The leakage guide outlet is located in an opening on the upper surface of the conical table or the polygonal side table for discharging the collected leakage, and the leakage collecting opening has a larger area than the leakage guide outlet.As an example, a square conical table is used:When two surfaces of a square conical table other than the sides are used as the upper and lower surfaces, the smaller surface may be used as the upper surface and the larger surface as the lower surface.The sides of the square conical table then form the leakage collecting surface; the leakage collecting opening is on the larger lower surface and the leakage guide outlet is on the smaller upper surface.When a leak occurs in the battery, the liquid drips from the leak collecting opening into the inside of the square conical table.Since the sides of the quadrangular conical table are inclined, the leakage flows toward the leakage guide outlet along the side of the quadrangular conical table due to the gravity.Difference in area between the leakage collecting opening and the leakage guide outlet:The leakage collecting opening has a larger area than the outlet of the leakage guiding outlet, so that the leakage flows out and then can converge quickly to the leakage guiding outlet, so that the leakage can be discharged more efficiently.A space portion occupied by the leakage collecting surface is a conical table or a polygonal side table, the leakage collecting opening and the leakage guide outlet serve as an upper or lower surface of the conical table or the polygonal side table, and the leakage collecting opening has a larger area than the leakage guide outlet, thereby achieving the following advantageous effects:Highly Efficient Collection of Leaks:The inclined sides of the conical table or the polygonal side table can effectively guide the flow of the leakage, prevent the liquid from stagnation, and improve the collection efficiency.Rapid Leakage Dissipation:The leakage guide outlet is located at a lower position, which promotes a rapid discharge of the leakage and shortens the residence time of the leakage in the collecting device.Improved Detection Sensitivity:Because the leakage flows to the leakage guide outlet more quickly, the leakage sensor can be more efficiently disposed around the leakage guide outlet due to this structure.Structural Strength:The structure of the conical table or the polygonal side table has a higher structural strength than a purely planar surface and can withstand a higher liquid pressure.FIG. 2 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention.For example, the main body of the battery leak collector may be divided into upper-layer and lower-layer structures, the upper layer serving to converge and detect the leaks, and the lower layer serving to collect the leaks.The main body 1 is provided with a leakage collecting surface 2 having an inclined angle, and the leakage collecting surface is formed as a square conical table structure having a wide top and a narrow bottom, which serves to increase the inclination angle of the initial contact surface between the leakage and the collecting device and facilitate the flow of the leakage. The square conical table structure having a wide top and a narrow bottom facilitates the leakage to collect at the position of the leakage guide outlet 3 on the base body 1 and flow through the leakage guide outlet 3 into the lower-layer leakage collection reservoir 4.FIG. 3 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention.The bottom plate 5 is a bottom plate of a drawer-like structure designed for leak collection, and a leak collection container 6 is provided on the bottom plate 5, and a complete leak collection and detection unit can be assembled by inserting the bottom plate 5 into the leak collection container 4, i.e., the leak collection container 6 is located directly below the leak guide outlet 3 when the bottom plate completely enters the opening of the leak collection container 4.The pull handle 7 is a handle on the door of the accumulator disposed on the battery leak collector and allows the bottom plate 5 to be pulled out from the leak accumulator 4 by the battery leak collector 7.The above structure makes it easy to concentrate the leakage to the leakage guide outlet 3 and guide the leakage into the leakage collection container 6 once the leakage occurs. Depending on requirements, the leakage detection sensor can be arranged in the leakage guide outlet 3 and / or in the leakage collecting container 6. As long as the size of the leakage guide outlet 3 and the leakage collecting container 6 is made as small and reasonable as possible, the time for detecting the leakage can be effectively shortened and the leakage detection rate can be greatly increased compared to the existing sheet structure.Optionally, the base body is provided on an underside with a leakage collecting container, wherein the leakage collecting container serves to store the battery leaks which flow out of the leakage guide outlet.The main body of the battery leak collector is divided into upper-layer and lower-layer structures.Top layer: The main function is the convergence and detection of leaks of liquids. This means that the top layer structure has a special construction which directs the flow of the discharged liquids and can be provided with sensors or other detection devices for monitoring leaks.Backsheet: The primary function is to collect the leakage liquid. The backsheet structure is constructed to absorb and store the leakage flowing down from the topsheet.A leakage collecting container is located at the bottom of the base body of the collecting device for battery leaks.The function of the leak collecting container is to store the battery leak flowing out of the leak guiding outlet, i.e. the liquid collected from the sub-layer is finally collected in this container.Purpose of arranging a leakage collecting container on the underside of the base body of the collecting device for battery leaks:Providing a safe and effective apparatus for collecting and treating battery leaks.By a layered structure, effective convergence and detection of the leakage is achieved to prevent propagation of the leakage and improve safety.The leakage collecting container achieves central storage of the leakage, which facilitates the subsequent treatment and reduces environmental pollution.Advantageous Effects:Improvement of Safety:The layered structure helps to detect and control the leakage in time and to reduce the effects of the leakage on the environment and equipment.Installation of the leakage collection container prevents the accidental spread of leaks and reduces the potential safety risks.Environmental Protection:The central collection of leaks facilitates uniform treatment and reduces contamination of soil, water and other environments.Serviceability:The leakage collecting container can be easily disassembled and cleaned, which facilitates maintenance and replacement.In the exemplary embodiment of the present utility model, a reliable and efficient collection and treatment of battery leaks is achieved by arranging a leakage collecting container on the underside of the main body.In an optional embodiment of the present invention, the base body is provided with a leakage collecting reservoir on the underside, and the leakage collecting reservoir is arranged on a base plate.When the bottom plate completely enters an opening of the leakage collecting tank, the leakage collecting tank is located at a lower end of the leakage guiding outlet; the bottom plate is provided with a pull grip on one side; the bottom plate is provided with a slide rail on a lower surface. The purpose of this construction is to: 1. enable the effective collection of leaks:By arranging a leakage collecting reservoir on the underside of the base body and by interacting with the base plate and the leakage collecting container, a complete leakage collecting unit is constructed which aims to collect the liquid which has leaked out of the battery in an efficient and secure manner.Ensuring the precise alignment of the leakage collecting container with the leakage guide outlet so that the leakage can flow exactly into the collecting container.2. Improvement of User-Friendliness:By the arrangement of a pull handle, the user can easily remove the base plate with the leakage collecting container from the leakage collecting container, which facilitates the cleaning and disposal of the leakage.A slide rail reduces friction in pulling the floor panel and thus provides smoother operation.By the above construction, the following positive effects can be obtained:Highly Efficient Collection of Leaks:The combination of the leakage collecting container, the base plate and the leakage collecting container forms an effective leakage collecting system which can collect the discharged liquid quickly and precisely.The precise positioning of the leakage collection container and the leakage guide outlet ensures the effective collection of leaks and reduces the risk of leakage spreading.Convenient Experience of Operation:The arrangement of the pull handle allows the user to easily remove and insert the leak collection unit, which is convenient for disposal of the leak and maintenance of the apparatus.The slide rail reduces friction during operation and improves ease and comfort.Improvement of Safety:The timely and effective collection of leaking liquid reduces the risk of damage to the environment and equipment by leaking liquid and improves the safety of the device.By disposing a leak collector on the lower surface of the base body of the battery leak collector and cooperating with structures such as a bottom plate, a leak collector, a pull handle and a slide rail, the technical solution effectively improves the collection efficiency, the ease of operation and the detection sensitivity of the leaks, enhances the safety of the device and has an important practical application value.FIG. 4 is a schematic diagram showing the structure of a battery leak collector having a plurality of leak collecting containers according to an embodiment of the present invention;Optionally, the main body of the battery leak collector is provided with a plurality of leak collecting holes on the upper side, each of the leak collecting holes being connected to a higher end of the independent leak collecting surface, and the plurality of leak collecting holes being coincident one-to-one with the plurality of leak collecting surfaces.FIG. 5 is a schematic diagram showing the structure of a battery leak collector having a plurality of leak collecting containers according to another embodiment of the present invention;Optionally, any of the independent leakage collecting surface is provided with an independent leakage guiding outlet at a lower end.A plurality of leak collecting containers are disposed on a bottom plate, wherein when the bottom plate fully enters an opening of the leak collecting reservoir, a plurality of the leak collecting containers are located at a lower end of the independent leak guiding outlets, the plurality of leak collecting containers coinciding one-to-one with the plurality of independent leak guiding outlets.In a concrete embodiment, the present invention can divide the upper surface into a plurality of leakage collecting holes without changing the outer structure of the main body, each of the leakage collecting holes is connected to a higher end of the independent leakage collecting surface, and the plurality of leakage collecting holes are coincident one-to-one with the plurality of leakage collecting surfaces. Any one of the independent leakage collecting surfaces is provided with an independent leakage guiding outlet at a lower end.A plurality of leak collecting containers are arranged on a bottom plate, wherein when the bottom plate completely enters an opening of the leak collecting reservoir, a plurality of the leak collecting containers are located at a lower end of the independent leak guiding outlets, wherein the plurality of leak collecting containers coincide one-to-one with the plurality of independent leak guiding outlets, i.e. each leak collecting unit is paired with a leak collecting container.The plurality of leak collecting units are independently paired with corresponding leak collecting containers, and the purpose of this construction is:Enabling Independent and Efficient Collection of Leaks at Multiple Points:By dividing the upper side into a plurality of leakage collecting openings and adapting them to independent leakage collecting surfaces, an independent collection of a plurality of leakage points is to be made possible and mutual influencing of the leaks is to be avoided.Each independent leakage collecting surface includes a higher end and a lower end, wherein the difference in potential energy is used to direct the leakage to flow quickly to the leakage guiding outlet.Improvement of Accuracy and Reliability of Leak Collection:The plurality of leakage collecting containers are coincident one-to-one with the plurality of independent leakage guiding outlets, thereby ensuring that the liquid collected at each leakage point can accurately enter the corresponding collecting container.While the outer structure of the base body remains unchanged, the inner structure has been optimized to improve integration and reliability of the device.Facilitation of classification, collection and disposal of leaks:By means of a plurality of independent leakage collecting containers, it is possible to classify and collect leaks of different characteristics, which facilitates the subsequent classification, treatment and recovery.Advantageous Effects:Improvement of Collection Efficiency of Leaks:The plurality of leakage collection apertures and independent leakage collection surfaces allow for the simultaneous collection of liquids from multiple leakage points, thereby improving overall collection efficiency.Utilizing the potential energy difference to guide the leakage speeds up the process of collecting leaks.Improvement of target accuracy of leak collection:Each leak point has an independent collection channel and an independent collection container, whereby mixing of the leaks is avoided and the target accuracy of the collection is improved.Improvement of the Accuracy of Leakage Detection:Because the leaks are collected independently, leak detection sensors may be used to more accurately determine the location of the leaks.Simplification of the Leakage Treatment:Separately collected leaks facilitate subsequent classification and recovery, which simplifies the process and increases efficiency.Improvement of Integration and Reliability of Device:While the outer structure of the base body remains unchanged, the inner structure has been optimized to improve integration and reliability of the device.By independently adjusting respective leak collection containers for a plurality of leak collection units, independent and efficient collection of multipoint leaks is achieved, the accuracy and reliability of leak collection is improved, the leak handling process is simplified, and the integration and reliability of the device is improved, which has an important practical application value.Optionally, the leakage guide outlet and / or the leakage collecting container is provided on the underside with a leakage detection sensor.In collecting the leakage, depending on actual needs, it is possible to distinguish between two cases: 1. after detecting the leakage, the leakage in the collection container is manually taken out; 2. at the bottom of the leakage collection container 6, there is an automatic drain valve which can be connected to an external pumping device via a pipe line, and at the side wall of the leakage collection container 6, there is a level sensor; When the level of the leakage is monitored by the level sensor to reach the preset level of the level sensor at the inner wall of the collection container, the automatic drain valve is opened, and the leakage liquid is discharged into the large-capacity external liquid collection device for recovery and processing in a timely manner to realize the fully automatic processing of the leakage from the detection via the collection to the discharge.Solution 1: Manual Leakage WithdrawalPurpose:Providing a simple and economical method for treating leaks, which is suitable for cases where the amount of leakage is small and the frequency of occurrence is low.It is convenient for the operators and maintenance personnel to visually observe and analyze the leakage, which helps determine the cause and extent of the leakage.Advantageous Effects:Lower costs, no need for complex automation systems.Simple operation and simple maintenance.It is capable of recognizing the leakage problem in time and preventing the leakage from spreading.Solution 2: Automatic Draining of LeaksPurpose:Automatic Handling of Leaks, Reduction of Manual Interventions and Improvement of Operating and Maintenance Efficiency.Suitable for application scenarios in which the quantity of the emerging liquid is large, occurs more frequently or has to remain unsupervised over a relatively long period of time.Minimizing the Effects of Leaks on Equipment and Environment.Advantageous Effects:High degree of automation, reduction of operating and maintenance costs.Fast reaction time to drain the leakage liquid in good time and to prevent the leakage from overflowing.High safety to reduce the risk of the operating and maintenance personnel coming into contact with corrosive liquids.An external wide area liquid collection device can be connected through the tubing, making the collection of caustic liquids more secure and convenient.The leakage liquid can be monitored and automatically treated in real time by the fill level sensor and the automatic discharge valve, and the fully automatic treatment of the leaks from the detection via the collection to the derivation can be realized, which improves the degree of automation overall.The embodiment of the present invention further discloses an electric power storage system comprising: a battery; and a battery leak collector as above, wherein the battery leak collector is disposed on the lower side of the battery.FIG. 1 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention.The battery leak collecting device is provided with a leak collecting opening 102 on an upper surface of a base body 101, the base body 101 includes a leak collecting surface 103, the leak collecting opening 102 being connected to a higher-side end of the leak collecting surface 103.The leakage collecting surface 103 is provided at a lower end with a leakage guide outlet 104.In a specific embodiment, the base body can represent a main structure of the battery leak collection device, which serves for receiving and collecting the leak liquid. For example, the base body may be divided into a top layer structure and a bottom layer structure, the top layer serving for convergence and detection of the leaks, and the bottom layer serving for collection and detection of the leaks, i.e., the position and the number of detection devices cannot be clearly determined. The embodiments of the present invention do not limit this.The leakage collecting opening can be arranged in an opening on the upper side of the base body in order to collect dripping leakage liquid.The leakage collecting surface may be an inclined surface inside the main body to guide the flow of the leakage liquid.Higher end: a higher position of the leakage collecting surface.Lower end: a lower position of the leakage collecting surface.In a concrete embodiment, the leak collecting surface according to the embodiments of the present invention is not parallel to the horizontal plane, the battery leak may flow on the leak collecting surface due to gravity, and the flow direction may be along a direction from the higher end to the lower end until it reaches the leak guiding outlet.Leakage guiding outlet: an opening at the lower end of the leakage collecting surface for discharging the collected leakage liquid.For example, such a battery leak collector is installed below a battery stack of liquid flow batteries. When a leak occurs within the battery pack, electrolyte drips from the leak point.The leaked electrolyte enters the interior of the main body of the battery leak collector through the leak collecting hole.Since the leakage collecting surface is inclined, the electrolyte flows along the inclined surface from the higher end to the lower end due to gravity.All the electrolyte dripping onto the leakage collecting surface flows to the leakage guiding outlet at the lower end.Through the leakage guiding outlet, the collected electrolyte can be drained for recovery or disposal.Advantages compared to the prior art:High Efficiency Collection and Recognition:The construction of the inclined leakage collecting surface ensures that the leakage liquid can flow quickly and efficiently and concentrate at the leakage guide outlet, thereby reducing stagnation of the liquid on the surface of the collecting device.The inclined construction allows the liquid to flow more quickly to the lower end than in a flat collection device, so that the structure facilitates timely detection of leaks when sensors are arranged at the lower end.Simplified Operation Management and Maintenance:Through the leakage guiding outlet, the collected leakage liquid can be easily discharged, which reduces the cumbersome manual handling of the leakage liquid and reduces the workload of the operating and maintenance personnel.The risk of spilling and damage to components in the environment of the battery pack is reduced.Improvement of Safety:The rapid and efficient collection and discharge of the leakage liquid helps to detect and remedy the leakage accident in good time and reduces the risk of damage to the battery stack and safety accidents.The battery leak collecting device is provided with a leak collecting opening on an upper surface of a base body, the base body including a leak collecting surface, the leak collecting opening being connected to a higher-positioned end of the leak collecting surface. This battery leak collector is provided with an inclined leak collector surface and improves the efficiency of collecting and detecting leaks, simplifies the operation and maintenance, increases the safety by optimizing the construction, and overcomes the problems of stagnation of leaks, detection difficulties, and large operation and maintenance costs caused by the planar construction of the prior art.Based on the above embodiment, a variant embodiment of the above embodiment is proposed, and it should be noted here that only the differences from the above embodiment are described in the variant embodiment in order to keep the description short.Optionally, a space portion occupied by the leakage collecting surface is a conical table or a polygonal side table, the leakage collecting opening and the leakage guide outlet serve as an upper or lower surface of the conical table or the polygonal side table, and the leakage collecting opening has a larger area than the leakage guide outlet.In the embodiments of the present invention, the leakage collecting surface refers to a surface that collects leaks. This surface is not limited to a simple flat surface, but may be a three-dimensional structure having a certain shape.The conical table refers to the part of a cone that lies between the cross section and the lower surface after it has been cut off by a plane parallel to its lower surface. It comprises two mutually parallel circular lower surfaces, a larger lower surface and a smaller upper surface, and further sides connecting the two lower surfaces to each other.A polygonal side table is the part of a prism which lies between the cross section and the lower surface after it has been cut off by a plane parallel to its lower surface, for example a quadrangular conical table. This is a geometry that is the part of a quadrangular cone that remains after the tip has been cut off by a plane parallel to the bottom surface.Definition of the square conical table:A quadrangular cone-shaped table is a three-dimensional geometry formed by cutting the tip of a quadrangular cone.It comprises two mutually parallel circular lower surfaces, a larger lower surface and a smaller upper surface, and further four trapezoidal sides connecting the two lower surfaces to each other.When the two surfaces of the conical table or the polygonal side table except for the sides are used as upper and lower surfaces, the smaller surface may be used as the upper surface and the larger surface as the lower surface.A leak collecting hole is provided in a hole in the lower surface of the conical table or the polygonal side table for receiving the leak.The leakage guide outlet is located in an opening on the upper surface of the conical table or the polygonal side table for discharging the collected leakage, and the leakage collecting opening has a larger area than the leakage guide outlet.As an example, a square conical table is used:When two surfaces of a square conical table other than the sides are used as the upper and lower surfaces, the smaller surface may be used as the upper surface and the larger surface as the lower surface.The sides of the square conical table then form the leakage collecting surface; the leakage collecting opening is on the larger lower surface and the leakage guide outlet is on the smaller upper surface.When a leak occurs in the battery, the liquid drips from the leak collecting opening into the inside of the square conical table.Since the sides of the quadrangular conical table are inclined, the leakage flows toward the leakage guide outlet along the side of the quadrangular conical table due to the gravity.Difference in area between the leakage collecting opening and the leakage guide outlet:The leakage collecting opening has a larger area than the outlet of the leakage guiding outlet, so that the leakage flows out and then can converge quickly to the leakage guiding outlet, so that the leakage can be discharged more efficiently.A space portion occupied by the leakage collecting surface is a conical table or a polygonal side table, the leakage collecting opening and the leakage guide outlet serve as an upper or lower surface of the conical table or the polygonal side table, and the leakage collecting opening has a larger area than the leakage guide outlet, thereby achieving the following advantageous effects:Highly Efficient Collection of Leaks:The inclined sides of the conical table or the polygonal side table can effectively guide the flow of the leakage, prevent the liquid from stagnation, and improve the collection efficiency.Rapid Leakage Dissipation:The leakage guide outlet is located at a lower position, which promotes a rapid discharge of the leakage and shortens the residence time of the leakage in the collecting device.Improved Detection Sensitivity:Because the leakage flows to the leakage guide outlet more quickly, the leakage sensor can be more efficiently disposed around the leakage guide outlet due to this structure.Structural Strength:The structure of the conical table or the polygonal side table has a higher structural strength than a purely planar surface and can withstand a higher liquid pressure.FIG. 2 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention.For example, the main body of the battery leak collector may be divided into upper-layer and lower-layer structures, the upper layer serving to converge and detect the leaks, and the lower layer serving to collect the leaks.The main body 1 is provided with a leakage collecting surface 2 having an inclined angle, and the leakage collecting surface is formed as a square conical table structure having a wide top and a narrow bottom, which serves to increase the inclination angle of the initial contact surface between the leakage and the collecting device and facilitate the flow of the leakage. The square conical table structure having a wide top and a narrow bottom facilitates the leakage to collect at the position of the leakage guide outlet 3 on the base body 1 and flow through the leakage guide outlet 3 into the lower-layer leakage collection reservoir 4.FIG. 3 is a schematic diagram showing the structure of a battery leak collector according to another embodiment of the present invention.The bottom plate 5 is a bottom plate of a drawer-like structure designed for leak collection, and a leak collection container 6 is provided on the bottom plate 5, and a complete leak collection and detection unit can be assembled by inserting the bottom plate 5 into the leak collection container 4, i.e., the leak collection container 6 is located directly below the leak guide outlet 3 when the bottom plate completely enters the opening of the leak collection container 4.The pull handle 7 is a handle on the door of the accumulator disposed on the battery leak collector and allows the bottom plate 5 to be pulled out from the leak accumulator 4 by the battery leak collector 7.The above structure makes it easy to concentrate the leakage to the leakage guide outlet 3 and guide the leakage into the leakage collection container 6 once the leakage occurs. Depending on requirements, the leakage detection sensor can be arranged in the leakage guide outlet 3 and / or in the leakage collecting container 6. As long as the size of the leakage guide outlet 3 and the leakage collecting container 6 is made as small and reasonable as possible, the time for detecting the leakage can be effectively shortened and the leakage detection rate can be greatly increased compared to the existing sheet structure.Optionally, the base body is provided on an underside with a leakage collecting container, wherein the leakage collecting container serves to store the battery leaks which flow out of the leakage guide outlet.The main body of the battery leak collector is divided into upper-layer and lower-layer structures.Top layer: The main function is the convergence and detection of leaks of liquids. This means that the top layer structure has a special construction which directs the flow of the discharged liquids and can be provided with sensors or other detection devices for monitoring leaks.Backsheet: The primary function is to collect the leakage liquid. The backsheet structure is constructed to absorb and store the leakage flowing down from the topsheet.A leakage collecting container is located at the bottom of the base body of the collecting device for battery leaks.The function of the leak collecting container is to store the battery leak flowing out of the leak guiding outlet, i.e. the liquid collected from the sub-layer is finally collected in this container.Purpose of arranging a leakage collecting container on the underside of the base body of the collecting device for battery leaks:Providing a safe and effective apparatus for collecting and treating battery leaks.By a layered structure, effective convergence and detection of the leakage is achieved to prevent propagation of the leakage and improve safety.The leakage collecting container achieves central storage of the leakage, which facilitates the subsequent treatment and reduces environmental pollution.Advantageous Effects:Improvement of Safety:The layered structure helps to detect and control the leakage in time and to reduce the effects of the leakage on the environment and equipment.Installation of the leakage collection container prevents the accidental spread of leaks and reduces the potential safety risks.Environmental Protection:The central collection of leaks facilitates uniform treatment and reduces contamination of soil, water and other environments.Serviceability:The leakage collecting container can be easily disassembled and cleaned, which facilitates maintenance and replacement.In the exemplary embodiment of the present utility model, a reliable and efficient collection and treatment of battery leaks is achieved by arranging a leakage collecting container on the underside of the main body.In an optional embodiment of the present invention, the base body is provided with a leakage collecting reservoir on the underside, and the leakage collecting reservoir is arranged on a base plate.When the bottom plate completely enters an opening of the leakage collecting tank, the leakage collecting tank is located at a lower end of the leakage guiding outlet; the bottom plate is provided with a pull grip on one side; the bottom plate is provided with a slide rail on a lower surface. The purpose of this construction is to: 1. enable the effective collection of leaks:By arranging a leakage collecting reservoir on the underside of the base body and by interacting with the base plate and the leakage collecting container, a complete leakage collecting unit is constructed which aims to collect the liquid which has leaked out of the battery in an efficient and secure manner.Ensuring the precise alignment of the leakage collecting container with the leakage guide outlet so that the leakage can flow exactly into the collecting container.2. Improvement of User-Friendliness:By the arrangement of a pull handle, the user can easily remove the base plate with the leakage collecting container from the leakage collecting container, which facilitates the cleaning and disposal of the leakage.A slide rail reduces friction in pulling the floor panel and thus provides smoother operation.By the above construction, the following positive effects can be obtained:Highly Efficient Collection of Leaks:The combination of the leakage collecting container, the base plate and the leakage collecting container forms an effective leakage collecting system which can collect the discharged liquid quickly and precisely.The precise positioning of the leakage collection container and the leakage guide outlet ensures the effective collection of leaks and reduces the risk of leakage spreading.Convenient Experience of Operation:The arrangement of the pull handle allows the user to easily remove and insert the leak collection unit, which is convenient for disposal of the leak and maintenance of the apparatus.The slide rail reduces friction during operation and improves ease and comfort.Improvement of Safety:The timely and effective collection of leaking liquid reduces the risk of damage to the environment and equipment by leaking liquid and improves the safety of the device.By disposing a leak collector on the lower surface of the base body of the battery leak collector and cooperating with structures such as a bottom plate, a leak collector, a pull handle and a slide rail, the technical solution effectively improves the collection efficiency, the ease of operation and the detection sensitivity of the leaks, enhances the safety of the device and has an important practical application value.FIG. 4 is a schematic diagram showing the structure of a battery leak collector having a plurality of leak collecting containers according to an embodiment of the present invention;Optionally, the main body of the battery leak collector is provided with a plurality of leak collecting holes on the upper side, each of the leak collecting holes being connected to a higher end of the independent leak collecting surface, and the plurality of leak collecting holes being coincident one-to-one with the plurality of leak collecting surfaces.FIG. 5 is a schematic diagram showing the structure of a battery leak collector having a plurality of leak collecting containers according to another embodiment of the present invention;Optionally, any of the independent leakage collecting surface is provided with an independent leakage guiding outlet at a lower end.A plurality of leak collecting containers are disposed on a bottom plate, wherein when the bottom plate fully enters an opening of the leak collecting reservoir, a plurality of the leak collecting containers are located at a lower end of the independent leak guiding outlets, the plurality of leak collecting containers coinciding one-to-one with the plurality of independent leak guiding outlets.In a concrete embodiment, the present invention can divide the upper surface into a plurality of leakage collecting holes without changing the outer structure of the main body, each of the leakage collecting holes is connected to a higher end of the independent leakage collecting surface, and the plurality of leakage collecting holes are coincident one-to-one with the plurality of leakage collecting surfaces. Any one of the independent leakage collecting surfaces is provided with an independent leakage guiding outlet at a lower end.A plurality of leak collecting containers are arranged on a bottom plate, wherein when the bottom plate completely enters an opening of the leak collecting reservoir, a plurality of the leak collecting containers are located at a lower end of the independent leak guiding outlets, wherein the plurality of leak collecting containers coincide one-to-one with the plurality of independent leak guiding outlets, i.e. each leak collecting unit is paired with a leak collecting container.The plurality of leak collecting units are independently paired with corresponding leak collecting containers, and the purpose of this construction is:Enabling Independent and Efficient Collection of Leaks at Multiple Points:By dividing the upper side into a plurality of leakage collecting openings and adapting them to independent leakage collecting surfaces, an independent collection of a plurality of leakage points is to be made possible and mutual influencing of the leaks is to be avoided.Each independent leakage collecting surface includes a higher end and a lower end, wherein the difference in potential energy is used to direct the leakage to flow quickly to the leakage guiding outlet.Improvement of Accuracy and Reliability of Leak Collection:The plurality of leakage collecting containers are coincident one-to-one with the plurality of independent leakage guiding outlets, thereby ensuring that the liquid collected at each leakage point can accurately enter the corresponding collecting container.While the outer structure of the base body remains unchanged, the inner structure has been optimized to improve integration and reliability of the device.Facilitation of classification, collection and disposal of leaks:By means of a plurality of independent leakage collecting containers, it is possible to classify and collect leaks of different characteristics, which facilitates the subsequent classification, treatment and recovery.Advantageous Effects:Improvement of Collection Efficiency of Leaks:The plurality of leakage collection apertures and independent leakage collection surfaces allow for the simultaneous collection of liquids from multiple leakage points, thereby improving overall collection efficiency.Utilizing the potential energy difference to guide the leakage speeds up the process of collecting leaks.Improvement of target accuracy of leak collection:Each leak point has an independent collection channel and an independent collection container, whereby mixing of the leaks is avoided and the target accuracy of the collection is improved.Improvement of the Accuracy of Leakage Detection:Because the leaks are collected independently, leak detection sensors may be used to more accurately determine the location of the leaks.Simplification of the Leakage Treatment:Separately collected leaks facilitate subsequent classification and recovery, which simplifies the process and increases efficiency.Improvement of Integration and Reliability of Device:While the outer structure of the base body remains unchanged, the inner structure has been optimized to improve integration and reliability of the device.By independently adjusting respective leak collection containers for a plurality of leak collection units, independent and efficient collection of multipoint leaks is achieved, the accuracy and reliability of leak collection is improved, the leak handling process is simplified, and the integration and reliability of the device is improved, which has an important practical application value.Optionally, the leakage guide outlet and / or the leakage collecting container is provided on the underside with a leakage detection sensor.In collecting the leakage, depending on actual needs, it is possible to distinguish between two cases: 1. after detecting the leakage, the leakage in the collection container is manually taken out; 2. at the bottom of the leakage collection container 6, there is an automatic drain valve which can be connected to an external pumping device via a pipe line, and at the side wall of the leakage collection container 6, there is a level sensor; When the level of the leakage is monitored by the level sensor to reach the preset level of the level sensor at the inner wall of the collection container, the automatic drain valve is opened, and the leakage liquid is discharged into the large-capacity external liquid collection device for recovery and processing in a timely manner to realize the fully automatic processing of the leakage from the detection via the collection to the discharge.Solution 1: Manual Leakage WithdrawalPurpose:Providing a simple and economical method for treating leaks, which is suitable for cases where the amount of leakage is small and the frequency of occurrence is low.It is convenient for the operators and maintenance personnel to visually observe and analyze the leakage, which helps determine the cause and extent of the leakage.Advantageous Effects:Lower costs, no need for complex automation systems.Simple operation and simple maintenance.It is capable of recognizing the leakage problem in time and preventing the leakage from spreading.Solution 2: Automatic Draining of LeaksPurpose:Automatic Handling of Leaks, Reduction of Manual Interventions and Improvement of Operating and Maintenance Efficiency.Suitable for application scenarios in which the quantity of the emerging liquid is large, occurs more frequently or has to remain unsupervised over a relatively long period of time.Minimizing the Effects of Leaks on Equipment and Environment.Advantageous Effects:High degree of automation, reduction of operating and maintenance costs.Fast reaction time to drain the leakage liquid in good time and to prevent the leakage from overflowing.High safety to reduce the risk of the operating and maintenance personnel coming into contact with corrosive liquids.An external wide area liquid collection device can be connected through the tubing, making the collection of caustic liquids more secure and convenient.The leakage liquid can be monitored and automatically treated in real time by the fill level sensor and the automatic discharge valve, and the fully automatic treatment of the leaks from the detection via the collection to the derivation can be realized, which improves the degree of automation overall.It is noted that in this document relational terms such as "first" and "second" are used only to distinguish one entity or act from another, and do not necessarily require or imply that such actual relationship or order exists between these entities or acts. Further, the terms "include," "comprise," or other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not expressly listed or other elements not expressly listed for the purpose of such process, method, article, or apparatus, or also elements inherent in such process, method, article, or apparatus. Without further limitation, the fact that an element is defined by the formulation "einschließlich......" does not exclude that further identical elements are present in the method, method, article or apparatus in which the element is / are contained.A battery leak collector and an electric power storage system provided by the present invention are described above in detail. Specific examples have been used to illustrate the principles and implementation of the present utility model, and the above illustrations of the embodiments are only for understanding the method of the present utility model and its gist; at the same time as general technical personnel in the field are changed based on the concept of the present utility model in the specific implementation and scope of application in the summary, the content of this description should not be interpreted as a limitation of the present utility model.

Claims

A battery leak collector characterized in that the battery leak collector is provided with a leak collecting hole on an upper surface of a base body, the base body comprising a leak collecting surface, the leak collecting hole being connected to a higher end of the leak collecting surface; the leak collecting surface being provided with a leak guiding outlet at a lower end.The battery leak collecting apparatus according to claim 1, characterized in that a space portion occupied by the leak collecting surface is a conical table or a polygonal side table, wherein the leak collecting opening and the leak guiding outlet serve as an upper or lower surface of the conical table or the polygonal side table, and wherein the leak collecting opening has a larger area than the leak guiding outlet.Battery leak collector according to any one of the preceding claims, characterized in that the base body is provided on an underside with a leak collecting container, the leak collecting container serving to store the battery leaks which flow out of the leak guide outlet.The battery leak collector according to claim 3, characterized in that the base body is provided with a leak collector on the bottom side, the leak collector being disposed on a bottom plate; wherein when the bottom plate completely enters an opening of the leak collector, the leak collector is located at a lower end of the leak guide outlet.Battery leak collector according to claim 4, characterised in that the bottom plate is provided with a pull handle on one side.Battery leak collector according to claim 5, characterized in that the bottom plate is provided with a slide rail on a lower surface.The battery leak collector according to claim 6, characterized in that the base body of the battery leak collector is provided on the upper side with a plurality of leak collecting holes, each of the leak collecting holes is connected to a higher end of the independent leak collecting surface, and the plurality of leak collecting holes are coincident one-to-one with the plurality of leak collecting surfaces.The battery leak collecting apparatus according to claim 7, characterized in that any one of the independent leak collecting surfaces is provided with an independent leak guiding outlet at a lower end; a plurality of leak collecting containers are disposed on a bottom plate, wherein when the bottom plate completely enters an opening of the leak collecting reservoir, a plurality of the leak collecting containers are located at a lower end of the independent leak guiding outlets, the plurality of leak collecting containers being coincident one-to-one with the plurality of the independent leak guiding outlets.Battery leak collector according to one of the preceding claims, characterized in that the leak guide outlet and / or the leak collector is provided on the underside with a leak detection sensor.An electric energy storage system, characterized in that it comprises a battery and a battery leak collector, wherein the battery leak collector is provided with a leak collecting opening on an upper surface of a base body, wherein the base body comprises a leak collecting surface, wherein the leak collecting opening is connected to a higher end of the leak collecting surface; wherein the leak collecting surface is provided with a leak guiding outlet at a lower end; and optionally wherein the collector is formed according to any one of the preceding claims.The electric power storage system according to claim 10, characterized in that a space portion occupied by the leakage collecting surface is a conical table or a polygonal side table, wherein the leakage collecting opening and the leakage guide outlet serve as an upper or lower surface of the conical table or the polygonal side table, and wherein the leakage collecting opening has a larger area than the leakage guide outlet.Electric energy storage system according to claim 10 or 11, characterized in that the base body is provided on an underside with a leakage collecting container, the leakage collecting container serving to store the battery leaks which flow out of the leakage guide outlet.Electric energy storage system according to claim 12, characterized in that the base body is provided on the bottom with a leakage collecting reservoir, wherein the leakage collecting reservoir is arranged on a bottom plate; wherein, when the bottom plate completely enters an opening of the leakage collecting reservoir, the leakage collecting reservoir is located at a lower end of the leakage guiding outlet.

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