Energy storage power station, application of energy storage power station and liquid flow energy storage tank

Abstract

The invention provides an energy storage power station, application of the energy storage power station and a liquid flow energy storage tank box. The liquid flow energy storage tank box comprises a frame, a liquid storage tank, a liquid inlet pipe and a liquid outlet pipe. The liquid storage tank is fixed in the frame, the corner fittings are arranged at the top and the bottom of the frame so that the liquid storage tank can be fixed to a transport vehicle and can be mutually fixed and stacked, and transportation and installation of the liquid flow energy storage tank box are facilitated. The liquid storage tank is used for containing electrolyte, the electrolyte can be transported along with the liquid flow energy storage tank box, and the electrolyte does not need to be transported independently. And the electrolyte does not need to be transferred for multiple times, so that the probability of electrolyte leakage is effectively reduced, and the safety is high. Meanwhile, the pollution to the environment is reduced. The liquid flow energy storage tanks can be stacked through the corner fittings, and the occupied area of the energy storage power station is reduced. According to the structure of the energy storage power station, by adding the liquid flow energy storage tanks and stacking the liquid flow energy storage tanks, the energy storage capacity of the energy storage power station can be expanded, the construction efficiency of the energy storage power station is improved, the cost is reduced, and convenient transportation and installation of the large liquid flow energy storage power station are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid flow energy storage, and in particular to an energy storage power station, the application of the energy storage power station and a liquid flow energy storage tank box. Background Art

[0002] A flow battery is an electrochemical energy storage device that works based on a redox reaction in two electrolyte solutions. Unlike conventional batteries, flow batteries store energy in liquid electrolytes in external tanks rather than on solid electrodes inside the battery.

[0003] The current model is to use ton barrels to transport electrolyte to the construction site of the liquid flow energy storage power station, and use magnetic pumps to pump it into the PPH tank; when the energy storage power station is completed at a destination and needs to be used at the destination, a magnetic pump is needed to pump the electrolyte into the ton barrel, and the truck transports the ton barrel away. The operation is cumbersome, and the shape of the ton barrel limits the space utilization during transportation and storage. In addition, the ton barrel consists of an inner plastic container (inner container) and an outer metal frame. During transportation and storage, the ton barrel may suffer physical damage, such as wear, scratches or impacts, which may cause electrolyte leakage and cause environmental pollution. Summary of the invention

[0004] The object of the present invention is to provide a liquid flow energy storage tank box to facilitate transportation and installation and reduce the probability of environmental pollution.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] According to one aspect of the present invention, the present application provides a liquid flow energy storage tank box, comprising a frame, a liquid storage tank, a liquid inlet pipe and a liquid outlet pipe. Corner pieces are provided at the top and bottom of the frame; the liquid storage tank is used to contain electrolyte; the liquid storage tank is fixed in the frame; the liquid inlet pipe is connected to the upper part of the liquid storage tank so as to be detachably connected to the liquid inlet pipe through a pipeline; the liquid outlet pipe is connected to the lower part of the liquid storage tank so as to be detachably connected to the liquid outlet pipe through a pipeline.

[0007] In some embodiments of the present application, the liquid storage tank is provided with a plurality of liquid inlet pipes and a plurality of liquid outlet pipes; the plurality of liquid inlet pipes are arranged at intervals; and the plurality of liquid outlet pipes are arranged at intervals.

[0008] In some embodiments of the present application, the liquid inlet pipe includes a main liquid inlet pipe and a branch liquid inlet pipe; the inlet of the main liquid inlet pipe extends out of the liquid storage tank; the branch liquid inlet pipe is connected to the outlet of the main liquid inlet pipe, and the branch liquid inlet pipe is formed with multiple outlets.

[0009] In some embodiments of the present application, the liquid inlet pipe further includes a plurality of liquid inlet branches; the plurality of liquid inlet branches are arranged at intervals along the length direction of the branch liquid inlet pipe, and one end of the plurality of liquid inlet branches is connected to the branch liquid inlet pipe.

[0010] In some embodiments of the present application, the liquid outlet pipe includes a main liquid outlet pipe and a branch liquid outlet pipe; the outlet of the main liquid outlet pipe extends out of the liquid storage tank; the branch liquid outlet pipe is connected to the inlet of the main liquid outlet pipe, and the branch liquid outlet pipe is formed with multiple inlets.

[0011] In some embodiments of the present application, the liquid outlet pipe further includes a plurality of liquid outlet branches; the plurality of liquid outlet branches are arranged at intervals along the length direction of the branch liquid outlet pipe, and one end of the plurality of liquid outlet branches is connected to the branch liquid outlet pipe.

[0012] In some embodiments of the present application, a temperature control unit is provided on the liquid storage tank to detect and control the temperature of the electrolyte in the liquid storage tank.

[0013] In some embodiments of the present application, a heat exchange component is attached to and fixed on the outer circumference of the liquid storage tank, and the heat exchange component extends in the longitudinal direction.

[0014] In some embodiments of the present application, the heat exchange element is a tubular structure having a heat exchange channel formed inside, and the heat exchange channel is used for the circulation of a heat exchange medium.

[0015] In some embodiments of the present application, a liquid collection groove is provided at the bottom of the liquid storage tank, the liquid collection groove is provided on the outside of the liquid storage tank, and an alarm device is provided in the liquid collection groove.

[0016] In some embodiments of the present application, a flow balancing plate is disposed in the liquid storage tank, and the flow balancing plate is vertically disposed in the liquid storage tank. A plurality of penetrating flow balancing holes are formed on the flow balancing plate.

[0017] In some embodiments of the present application, the outer peripheral edge of the flow balancing plate is fixed on the inner peripheral wall of the liquid storage tank, and a liquid flow groove is provided through the outer peripheral edge of the flow balancing plate.

[0018] In some embodiments of the present application, a liquid discharge port is provided on the liquid collection tank, and a liquid discharge pipe is provided at the liquid discharge port to discharge the accumulated liquid in the liquid collection tank.

[0019] In some embodiments of the present application, the shape of the liquid flow channel is one or a combination of any of the following: arc, circle, and polygon.

[0020] In some embodiments of the present application, a plurality of the flow equalizing plates are arranged at intervals along the longitudinal direction.

[0021] In some embodiments of the present application, a plurality of partitions are further provided in the liquid storage tank, and the plurality of partitions are arranged at intervals in the longitudinal direction to divide the chamber in the liquid storage tank into a plurality of compartments; a liquid inlet pipe and a liquid outlet pipe are respectively provided in each of the compartments.

[0022] According to another aspect of the present application, the present application provides an energy storage power station, including a battery stack unit, a pipeline unit, an electronic control unit, a magnetic pump and the above-mentioned liquid flow energy storage tank box; the frame is provided with multiple; the liquid storage tank includes a positive electrode liquid storage tank and a negative electrode liquid storage tank; the positive electrode liquid storage tank contains positive electrode electrolyte; the positive electrode liquid storage tank is arranged in one or more of the frames; the negative electrode liquid storage tank contains negative electrode electrolyte; the negative electrode liquid storage tank is arranged in one or more of the frames; the battery stack unit is arranged in one or more of the frames ; A pipeline unit is connected to the battery stack unit; the battery stack unit is respectively connected to the positive electrode liquid storage tank and the negative electrode liquid storage tank through the pipeline unit; the pipeline unit is detachably connected to the positive electrode liquid storage tank and the negative electrode liquid storage tank; a magnetic pump is arranged in the pipeline unit; the magnetic pumps are respectively arranged corresponding to the positive electrode liquid storage tank and the negative electrode liquid storage tank, so as to drive the positive electrode electrolyte to flow between the positive electrode liquid storage tank and the battery stack unit, and to drive the negative electrode electrolyte to flow between the negative electrode liquid storage tank and the battery stack unit.

[0023] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0024] In the present invention, the liquid storage tank is fixed in the frame, and the top and bottom of the frame are provided with corner pieces, so that it can be fixed on the transport vehicle, and can be fixed and stacked with each other, which is convenient for the transportation and installation of the liquid flow energy storage tank box. The liquid flow energy storage tank boxes can be stacked with each other through the corner pieces, reducing the occupied area of ​​the liquid flow energy storage tank box.

[0025] The liquid storage tank is used to hold electrolyte, and the electrolyte can be transported together with the liquid flow energy storage tank box, and the electrolyte does not need to be transported separately. The electrolyte does not need to be transported multiple times, which effectively reduces the probability of electrolyte leakage and has high safety. At the same time, it effectively reduces the pollution to the environment. Liquid flow energy storage tank boxes can be stacked on each other through corner pieces to reduce the occupied area of ​​the energy storage power station. The structure of the energy storage power station can expand the energy storage capacity of the energy storage power station by adding liquid flow energy storage tank boxes and stacking the liquid flow energy storage tank boxes, improve the construction efficiency of the energy storage power station, reduce costs, and realize convenient transportation and installation of large liquid flow energy storage power stations.

[0026] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0029] Figure 1 It is a structural schematic diagram of the first embodiment of the energy storage power station of the present invention.

[0030] Figure 2 yes Figure 1 Schematic diagram of the stacking of the structure.

[0031] Figure 3 It is a structural schematic diagram of the liquid flow energy storage tank box of the present invention.

[0032] Figure 4 yes Figure 3 A schematic structural diagram of the structure from another perspective.

[0033] Figure 5 It is a structural schematic diagram of the flow equalizing plate of the present invention.

[0034] Figure 6 It is a structural schematic diagram of the first embodiment of the liquid storage tank of the present invention.

[0035] Figure 7 Schematic diagram of the flow of electrolyte in the first embodiment of the liquid storage tank of the present invention when in use.

[0036] Figure 8 It is a structural schematic diagram of the second embodiment of the liquid storage tank of the present invention.

[0037] Fig. 9 Schematic diagram of the flow of electrolyte in the second embodiment of the liquid storage tank of the present invention when in use.

[0038] Fig.10 It is a schematic structural diagram of a third embodiment of a liquid storage tank of the present invention.

[0039] Fig.11 Schematic diagram of the flow of electrolyte in the third embodiment of the liquid storage tank of the present invention when in use.

[0040] Fig.12 1 is a schematic structural diagram of a fourth embodiment of a liquid storage tank according to the present invention.

[0041] Fig.13 Schematic diagram of the flow of electrolyte in the fourth embodiment of the liquid storage tank of the present invention when in use.

[0042] Fig.141 is a schematic structural diagram of a fifth embodiment of a liquid storage tank according to the present invention.

[0043] Fig.15 Schematic diagram of the flow of electrolyte in the fifth embodiment of the liquid storage tank of the present invention when in use.

[0044] Fig.16 It is a schematic structural diagram of a sixth embodiment of a liquid storage tank of the present invention.

[0045] Fig.17 Schematic diagram of the flow of electrolyte in the sixth embodiment of the liquid storage tank of the present invention when in use.

[0046] Fig.18 It is a structural schematic diagram of the second embodiment of the energy storage power station of the present invention.

[0047] Fig.19 yes Fig.18 Schematic diagram of the stacking of the structure.

[0048] Fig. 20 It is a structural schematic diagram of the third embodiment of the energy storage power station of the present invention.

[0049] Fig.21 It is a structural schematic diagram of the fourth embodiment of the energy storage power station of the present invention.

[0050] The reference numerals are as follows: 100, frame; 110, first frame; 120, second frame; 130, third frame; 200, liquid storage tank; 201, positive electrode liquid storage tank; 202, negative electrode liquid storage tank; 210, overflow box; 220, manhole; 230, liquid inlet; 240, charging port; 250, safety valve; 260, liquid level gauge; 270, heat exchanger; 280, liquid accumulation tank ; 290, flow equalizing plate; 291, flow equalizing hole; 292, liquid flow trough; 310, liquid inlet pipe; 311, main liquid inlet pipe; 312, branch liquid inlet pipe; 313, liquid inlet branch pipe; 320, liquid outlet pipe; 321, main liquid outlet pipe; 322, branch liquid outlet pipe; 323, liquid outlet branch pipe; 400, battery stack unit; 500, pipeline unit; 600, magnetic pump; 700, battery management system. DETAILED DESCRIPTION

[0051] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete and will fully convey the concept of the example embodiments to those skilled in the art.

[0052] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0053] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0054] For ease of description and understanding, the length direction of the tank container is referred to as the longitudinal direction, and the direction horizontal and perpendicular to the longitudinal direction is referred to as the transverse direction.

[0055] Figure 1 It is a structural schematic diagram of the first embodiment of the energy storage power station of the present invention. Figure 2 yes Figure 1 Schematic diagram of the stacking of the structure. Figure 3 It is a structural schematic diagram of the liquid flow energy storage tank box of the present invention. Figure 4 yes Figure 3 A schematic structural diagram of the structure from another perspective.

[0056] See also Figures 1 to 4 In this embodiment, an energy storage power station is provided, including a liquid energy storage tank, a battery stack unit 400, a pipeline unit 500, an electric control unit, and a magnetic pump 600. The liquid energy storage tank contains electrolyte, the pipeline unit 500 connects the liquid energy storage tank and the battery stack unit 400, and the magnetic pump 600 is connected in series in the pipeline unit 500 to drive the electrolyte in the liquid energy storage tank to move along the pipeline unit 500 to the battery stack unit 400, and electron exchange occurs in the battery stack unit 400 to generate electric energy. The battery stack unit and the magnetic pump are electrically connected to the electric control unit respectively.

[0057] The liquid energy storage tank box includes a frame 100 and a liquid storage tank 200 disposed in the frame 100 .

[0058] There are multiple frames 100, and the top and bottom of the frames 100 are provided with corner pieces so that they can be fixed on a transport vehicle, and can be fixed and stacked with each other, so as to facilitate the transportation and installation of the frames 100. The frames 100 are fixed on a transport vehicle or a semi-trailer by corner pieces to facilitate transportation. The frames 100 can be stacked, and can be limited and fixed by corner pieces so that the liquid flow energy storage tanks can be stacked with each other, so that the installation of the energy storage power station occupies a smaller area.

[0059] The frame 100 is provided in a plurality, and the outer frame shape of the frame 100 is a rectangular parallelepiped or a cube structure. The frame 100 is a structure formed by connecting a plurality of cross beams and longitudinal beams.

[0060] The size of the frame 100 can be set to different sizes to accommodate transportation of different sizes, such as 10-foot container, 20-foot container, and 40-foot container.

[0061] The liquid storage tank 200 is used to contain electrolyte; the liquid storage tank 200 is fixed in the frame 100. The outer shell of the liquid storage tank 200 is a structure made of metal material, so that it can be used for a long time, thereby extending the service life of the liquid storage tank 200.

[0062] In this embodiment, the liquid storage tank adopts a metal shell and a plastic lining (the lining can be polyethylene, polytetrafluoroethylene, etc.).

[0063] In one embodiment, the liquid storage tank is a metal shell, and the interior of the metal shell is painted with anti-corrosion paint.

[0064] In some embodiments, the outer shell of the liquid storage tank is a tank body made of carbon steel, and the outer surface of the metal shell is painted with anti-corrosion paint. In some embodiments, the outer shell of the liquid storage tank is also provided with an insulation layer such as rock wool.

[0065] In some embodiments, a plastic layer is disposed outside the outer shell of the liquid storage tank or the outer shell of the liquid storage tank is made of fiberglass reinforced plastic.

[0066] In other embodiments, the outer shell of the liquid storage tank is a structure made of high-strength materials such as metal materials or carbon fiber materials. In this embodiment, the liquid storage tank 200 includes a positive electrode liquid storage tank 201 and a negative electrode liquid storage tank 202. The positive electrode liquid storage tank 201 contains positive electrode electrolyte, and the negative electrode liquid storage tank 202 contains negative electrode electrolyte.

[0067] The electrolyte is contained in the liquid storage tank 200 so that it can be transported together with the liquid storage tank 200, and the electrolyte does not need to be transported separately.

[0068] The flow battery can be any one of an all-vanadium flow battery, a zinc-bromine flow battery, a zinc-iron flow battery, an iron-chromium flow battery, and an organic flow battery.

[0069] In some embodiments, the electrolyte of the all-vanadium flow battery uses vanadium ions (V2+ and V3+) as active materials. The electrolyte of the zinc-bromine flow battery uses zinc and bromine as active materials. The electrolyte of the iron-chromium flow battery uses iron and chromium as active materials.

[0070] An overflow box 210 is disposed at the upper end of each liquid storage tank 200, and a manhole 220 penetrating into the tank is provided on the overflow box 210. The manhole 220 is covered with a cover plate.

[0071] The overflow box 210 is also provided with a liquid inlet 230, and the pipe unit 500 is connected to the liquid inlet 230. A liquid outlet (not shown in the figure) is also provided at the bottom of the liquid storage tank 200, and the liquid outlet is connected to the liquid inlet 230 of the same type of liquid storage tank 200 or the battery stack unit 400 through a pipeline. The liquid inlets 230 and liquid outlets of multiple liquid storage tanks 200 are connected in sequence through pipelines, and then the other liquid inlets 230 and liquid outlets of the liquid storage tank 200 are connected to the battery stack unit 400 through pipelines, thereby forming a circulation channel for the flow of electrolyte between the liquid storage tank 200 and the battery stack unit 400.

[0072] The overflow box 210 is also provided with a charging port 240 for flushing inert gas, such as nitrogen, etc. into the tank. The overflow box 210 is also provided with a safety valve 250 and a liquid level gauge 260 , and the liquid level gauge 260 extends into the liquid storage tank 200 .

[0073] In this embodiment, a temperature control unit is further provided on the liquid storage tank 200 to detect or control the temperature of the electrolyte in the liquid storage tank 200 .

[0074] In some embodiments, a heat exchanger 270 is further provided on the periphery of the liquid storage tank 200. The heat exchanger 270 is attached to the periphery of the liquid storage tank 200 and is used for absorbing and dissipating heat. The heat exchanger is a structure such as stainless steel or steel plate. The heat exchanger 270 can also be used as part of the temperature control unit.

[0075] The heat exchange member 270 extends in the longitudinal direction. The extension of the heat exchange member 270 in the longitudinal direction in the liquid storage tank 200 can not only increase the heat exchange area, but also enhance the structural strength of the liquid storage tank 200.

[0076] As a tank structure, the liquid storage tank 200 can use the outer wall of the liquid storage tank 200 for heating and cooling, or use groundwater or water in a reservoir for cooling, thereby reducing the use of heat exchangers and air conditioners, reducing energy consumption, and improving system operation efficiency.

[0077] The heat exchanger is a tubular structure with a heat exchange channel formed inside. The heat exchange channel is used for the circulation of heat exchange medium. The heat exchange channel in the heat exchanger can be connected to groundwater or water in the reservoir for cooling. For cold weather or cold areas, the heat exchange channel in the heat exchanger can be connected to hot water or steam for heating, so as to heat the electrolyte in the liquid storage tank.

[0078] In the related art, when the temperature in the liquid storage tank 200 is higher or lower than a preset temperature range, solids may be precipitated in the liquid storage tank 200, thereby affecting the quality of the electrolyte.

[0079] In the present application, the temperature control unit is provided so that the tank box has a temperature control function. The temperature control function is provided so that the temperature of the electrolyte in the liquid storage tank 200 can be controlled during the transportation and use of the tank box, so as to keep the temperature of the electrolyte within a preset temperature range during transportation and use, so that the liquid flow energy storage tank box constitutes a tank box structure integrating temperature control and transportation.

[0080] In this embodiment, a liquid storage tank 280 is provided at the bottom of the outer side of the liquid storage tank 200, and the liquid storage tank 280 is used to collect the electrolyte leaked and infiltrated in the liquid storage tank 200. The bottoms of the positive electrode liquid storage tank 201 and the negative electrode liquid storage tank 202 are both provided with liquid storage tanks 280; the liquid storage tank 280 is located within the enclosure of the frame 100. An alarm device is provided in the liquid storage tank to alarm for liquid leakage.

[0081] The liquid accumulation tank is provided with a liquid discharge port, and a liquid discharge pipe is arranged at the liquid discharge port to discharge the accumulated liquid in the liquid accumulation tank.

[0082] In one embodiment, each liquid storage tank is independently provided with a drain pipe for independently draining the accumulated liquid in the corresponding liquid storage tank.

[0083] In another embodiment, the energy storage power station includes a plurality of liquid storage tanks, each of which is provided with a liquid discharge pipe, and the outlets of the plurality of liquid storage tanks are connected so that the accumulated liquid can be discharged from or to the same location.

[0084] In this embodiment, reinforcing ribs are also provided in the liquid storage tank 200. Both the positive electrode liquid storage tank 201 and the negative electrode liquid storage tank 202 are provided with reinforcing ribs.

[0085] In one embodiment, the reinforcing ribs can also be disposed outside the liquid storage tank 200 .

[0086] Figure 5 It is a schematic diagram of the structure of the flow equalizing plate 290 of the present invention.

[0087] See also Figures 1 to 5In this embodiment, a flow balancing plate 290 is provided in the liquid storage tank 200. The flow balancing plate 290 is vertically arranged in the liquid storage tank 200, and a plurality of flow balancing holes 291 are provided on the flow balancing plate 290. The flow balancing plate 290 can divide the space in the liquid storage tank 200, and the flow balancing holes 291 on the flow balancing plate 290 are used for the circulation of the electrolyte. The setting of the flow balancing plate 290 plays the role of wave prevention and promoting the uniform flow of the electrolyte.

[0088] A plurality of flow equalizing plates 290 are arranged at intervals in the longitudinal direction to divide the space in the liquid storage tank 200 into a plurality of chambers.

[0089] In this embodiment, the outer peripheral edge of the flow balancing plate 290 is fixed to the inner peripheral wall of the liquid storage tank 200, and the outer periphery of the flow balancing plate 290 is fixed to the inner peripheral wall of the liquid storage tank 200 by welding or the like.

[0090] A through-flow groove 292 is provided on the outer peripheral edge of the flow balancing plate 290 . The flow balancing groove 292 is used for the circulation of electrolyte, and the diameter of the flow balancing groove 292 is larger than the diameter of the flow balancing hole 291 .

[0091] In one embodiment, the liquid passage groove 292 may be in an arc shape.

[0092] In one embodiment, the liquid channel 292 may be circular in shape.

[0093] In one embodiment, the shape of the liquid channel 292 may be a polygon.

[0094] In some embodiments, the shape of the liquid channel 292 is any combination of arc, circle and polygon.

[0095] Figure 6 It is a schematic structural diagram of the first embodiment of the liquid storage tank 200 of the present invention. Figure 7 Schematic diagram of the flow of electrolyte in the first embodiment of the liquid storage tank 200 of the present invention when in use.

[0096] See also Figures 1 to 7 The liquid storage tank 200 further includes a liquid inlet pipe 310 and a liquid outlet pipe 320. The liquid inlet pipe 310 is connected to the upper part of the liquid storage tank 200 so as to be detachably connected to the liquid inlet pipe 310 through a pipeline. The liquid outlet pipe 320 is connected to the lower part of the liquid storage tank 200 so as to be detachably connected to the liquid outlet pipe 320 through a pipeline.

[0097] The liquid storage tank 200 is arranged in the frame 100, and the liquid inlet pipe 310 and the liquid outlet pipe 320 are detachably connected through pipelines, and the liquid storage tank 200 contains electrolyte. Corner pieces are arranged at the top and bottom of the frame 100 to facilitate the transportation of the liquid flow energy storage tank box and the stacking of the liquid flow energy storage tank box after transportation to the destination. The liquid inlet pipe 310 and the liquid outlet pipe 320 are respectively connected to the pipeline unit 500 through pipelines.

[0098] The outer shell of the liquid storage tank 200 is a structure made of metal material, so that it can be used for a long time, and the electrolyte can be transported with the liquid storage tank 200. The electrolyte does not need to be transported separately, which facilitates the use of the liquid flow energy storage tank box.

[0099] The liquid inlet pipe 310 is disposed at the top of the liquid storage tank 200 , and the liquid outlet pipe 320 is disposed at the bottom of the liquid storage tank 200 , so that liquid can be inlet from the top of the liquid storage tank 200 and outlet from the bottom of the liquid storage tank 200 .

[0100] In one embodiment, the liquid inlet pipe 310 may be disposed at one end of the liquid storage tank 200 in the longitudinal direction, and the liquid inlet pipe 310 is disposed close to one end of the liquid storage tank 200 in the longitudinal direction.

[0101] In one embodiment, the liquid inlet pipe 310 may be disposed in the middle of the liquid storage tank 200 in the longitudinal direction.

[0102] In another embodiment, the liquid inlet pipe 310 is disposed at one end of the liquid storage tank 200 in the longitudinal direction; and the liquid outlet pipe 320 is disposed at the other end of the liquid storage tank 200 in the longitudinal direction.

[0103] In another embodiment, the liquid outlet pipe 320 is disposed in the middle of the liquid storage tank 200 in the longitudinal direction.

[0104] See also Figure 6 and Figure 7 In a specific embodiment, the liquid inlet pipe 310 is disposed at the top of the liquid storage tank 200, and the liquid inlet pipe 310 is located at one end in the longitudinal direction of the liquid storage tank 200. The liquid outlet pipe 320 is disposed at the bottom of the liquid storage tank 200, and the liquid outlet pipe 320 is located at the other end in the longitudinal direction of the liquid storage tank 200. The position between the liquid inlet pipe 310 and the liquid outlet pipe 320 is set so that the electrolyte can move from one end in the longitudinal direction of the top of the liquid storage tank 200 toward the other end in the longitudinal direction of the bottom of the liquid storage tank, so that the electrolyte can fully flow in the liquid storage tank 200.

[0105] Figure 8 2 is a schematic structural diagram of a second embodiment of a liquid storage tank 200 of the present invention. Fig. 9 Schematic diagram of the flow of electrolyte in the second embodiment of the liquid storage tank 200 of the present invention when in use.

[0106] See also Figure 8 and Fig. 9 In this embodiment, the liquid inlet pipe 310 is arranged at the top of the liquid storage tank 200, and the liquid inlet pipe 310 is located in the middle of the longitudinal direction of the liquid storage tank 200. The liquid outlet pipe 320 is arranged at the bottom of the liquid storage tank 200, and the liquid outlet pipe 320 is located at one end of the longitudinal direction of the liquid storage tank 200. The position between the liquid inlet pipe 310 and the liquid outlet pipe 320 is arranged so that the electrolyte can move from the middle of the longitudinal direction of the top of the liquid storage tank 200 toward one end of the longitudinal direction of the bottom of the liquid storage tank.

[0107] In this embodiment, the liquid inlet pipe 310 is arranged in the middle of the liquid storage tank 200 in the longitudinal direction, and the liquid inlet pipe 310 includes a main liquid inlet pipe 311 and a branch liquid inlet pipe 312; the inlet of the main liquid inlet pipe 311 extends out of the liquid storage tank 200; the branch liquid inlet pipe 312 is connected to the outlet of the main liquid inlet pipe 311, and the branch liquid inlet pipe 312 is formed with multiple outlets. The multiple outlets of the branch liquid inlet pipe 312 allow the electrolyte to enter the liquid storage tank 200 from the multiple outlets of the liquid inlet pipe 310, so that the flow of the electrolyte in the liquid storage tank 200 is more uniform.

[0108] A shower head or a nozzle or other structure may be installed at the outlet of the branch liquid inlet pipe to spray the electrolyte evenly, thereby making the flow of the electrolyte in the liquid storage tank more uniform.

[0109] There are intervals between the multiple outlets of the branch liquid inlet pipe 312, so that the electrolyte enters the liquid storage tank 200 from different positions, thereby making the flow of the electrolyte in the liquid storage tank 200 more uniform.

[0110] In this embodiment, the branch liquid inlet pipe 312 extends in a straight line, and outlets of the branch liquid inlet pipe 312 are formed at both ends of the branch liquid inlet pipe 312. The branch liquid inlet pipe 312 extends in a longitudinal direction or in a transverse direction.

[0111] In one embodiment, two outlets are formed on the branch liquid inlet pipe 312 .

[0112] In one embodiment, a plurality of through holes are provided on the side wall of the branch liquid inlet pipe 312 for the outflow of electrolyte.

[0113] Fig.10 2 is a schematic structural diagram of a third embodiment of a liquid storage tank 200 of the present invention. Fig.11 Schematic diagram of the flow of electrolyte in the third embodiment of the liquid storage tank 200 of the present invention when in use.

[0114] See also Fig.10 and Fig.11 In this embodiment, the liquid inlet pipe 310 is arranged at the top of the liquid storage tank 200, and the liquid inlet pipe 310 is located in the middle of the longitudinal direction of the liquid storage tank 200. The liquid outlet pipe 320 is arranged at the bottom of the liquid storage tank 200, and the liquid outlet pipe 320 is located in the middle of the longitudinal direction of the liquid storage tank 200. The position between the liquid inlet pipe 310 and the liquid outlet pipe 320 is arranged so that the electrolyte can move from the middle of the longitudinal direction of the top of the liquid storage tank 200 toward the middle of the longitudinal direction of the bottom of the liquid storage tank, and drive the electrolyte at both ends of the longitudinal direction of the liquid storage tank 200 to move toward the middle of the bottom.

[0115] In this embodiment, the structure of the liquid inlet pipe 310 refers to the structure of the liquid inlet pipe 310 in the second embodiment of the liquid storage tank 200.

[0116] In this embodiment, the liquid outlet pipe 320 is arranged in the middle and lower part of the liquid storage tank 200 in the longitudinal direction, and the liquid outlet pipe 320 includes a main liquid outlet pipe 321 and a branch liquid outlet pipe 322; the outlet of the main liquid outlet pipe 321 extends out of the liquid storage tank 200; the branch liquid outlet pipe 322 is connected to the inlet of the main liquid outlet pipe 321, and the branch liquid outlet pipe 322 is formed with multiple inlets. The multiple inlets of the branch liquid outlet pipe 322 allow the electrolyte to enter the liquid outlet pipe 320 from the multiple inlets of the liquid outlet pipe 320, so that the flow of the electrolyte in the liquid storage tank 200 is more uniform.

[0117] There are intervals between the multiple inlets of the branch liquid outlet pipe 322, so that the electrolyte enters the liquid outlet pipe 320 from different positions, thereby making the electrolyte flow in the liquid storage tank 200 more uniform.

[0118] In this embodiment, the branched liquid outlet pipe 322 extends in a straight line, and outlets of the branched liquid outlet pipe 322 are formed at both ends of the branched liquid inlet pipe 312. The branched liquid outlet pipe 322 extends in a longitudinal direction or in a transverse direction.

[0119] In one embodiment, a plurality of through holes are provided on the side wall of the branch liquid outlet pipe 322 for the inflow of electrolyte.

[0120] In one embodiment, two inlets are formed on the branch liquid inlet pipe 312 .

[0121] Fig.12 2 is a schematic structural diagram of a fourth embodiment of a liquid storage tank 200 of the present invention. Fig.13 Schematic diagram of the flow of electrolyte in the fourth embodiment of the liquid storage tank 200 of the present invention when in use.

[0122] See also Fig.12 and Fig.13 In this embodiment, the liquid inlet pipe 310 is arranged at the top of the liquid storage tank 200, and the liquid inlet pipe 310 is located in the middle of the longitudinal direction of the liquid storage tank 200. The liquid outlet pipe 320 is arranged at the bottom of the liquid storage tank 200, and the liquid outlet pipe 320 is located in the middle of the longitudinal direction of the liquid storage tank 200. The position between the liquid inlet pipe 310 and the liquid outlet pipe 320 is arranged so that the electrolyte can move from the middle of the longitudinal direction of the top of the liquid storage tank 200 toward the middle of the longitudinal direction of the bottom of the liquid storage tank, and drive the electrolyte at both ends of the longitudinal direction of the liquid storage tank 200 to move toward the middle of the bottom.

[0123] In this embodiment, the structure of the liquid inlet pipe 310 refers to the structure of the liquid inlet pipe 310 in the third embodiment of the liquid storage tank 200. The difference is that in this embodiment, the branch liquid inlet pipe 312 is provided with four outlets, and the four outlets of the branch liquid inlet pipe 312 are arranged around the main liquid inlet pipe 311.

[0124] There are two branch liquid inlet pipes 312 , which extend in the transverse direction and the longitudinal direction respectively. The two branch liquid inlet pipes 312 intersect with each other, so that the liquid inlet pipe 310 is formed with four outlets.

[0125] In this embodiment, the structure of the liquid outlet pipe 320 refers to the structure of the liquid outlet pipe 320 in the third embodiment of the liquid storage tank 200. The difference is that in this embodiment, four inlets are provided on the liquid outlet pipe 320. The structure of the liquid outlet pipe 320 refers to the structure and position of the liquid inlet pipe 310 in this embodiment.

[0126] Fig.14 2 is a schematic structural diagram of a fifth embodiment of a liquid storage tank 200 of the present invention. Fig.15 Schematic diagram of the flow of electrolyte in the fifth embodiment of the liquid storage tank 200 of the present invention when in use.

[0127] See also Fig.14 and Fig.15 In this embodiment, the liquid inlet pipe 310 is arranged at the top of the liquid storage tank 200, and the liquid inlet pipe 310 is located in the middle of the longitudinal direction of the liquid storage tank 200. The liquid outlet pipe 320 is arranged at the bottom of the liquid storage tank 200, and the liquid outlet pipe 320 is located at one end of the longitudinal direction of the liquid storage tank 200. The position between the liquid inlet pipe 310 and the liquid outlet pipe 320 is arranged so that the electrolyte can move from the middle of the longitudinal direction of the top of the liquid storage tank 200 toward one end of the longitudinal direction of the bottom of the liquid storage tank.

[0128] In this embodiment, the liquid inlet pipe 310 is arranged in the middle of the liquid storage tank 200 in the longitudinal direction, and the liquid inlet pipe 310 includes a main liquid inlet pipe 311 and a branch liquid inlet pipe 312; the inlet of the main liquid inlet pipe 311 extends out of the liquid storage tank 200; the branch liquid inlet pipe 312 is connected to the outlet of the main liquid inlet pipe 311, and the branch liquid inlet pipe 312 is formed with multiple outlets. The multiple outlets of the branch liquid inlet pipe 312 allow the electrolyte to enter the liquid storage tank 200 from the multiple outlets of the liquid inlet pipe 310, so that the flow of the electrolyte in the liquid storage tank 200 is more uniform.

[0129] Furthermore, the liquid inlet pipe 310 also includes a plurality of liquid inlet branches 313; the plurality of liquid inlet branches 313 are arranged at intervals along the length direction of the branch liquid inlet pipe 312, and one end of the plurality of liquid inlet branches 313 is connected to the branch liquid inlet pipe 312, so as to increase the outlet of the liquid inlet pipe 310 through the arrangement of the liquid inlet branches 313, thereby making the flow of the electrolyte in the liquid storage tank 200 more uniform.

[0130] In this embodiment, the branch liquid inlet pipe 312 extends longitudinally, and both ends of the branch liquid inlet pipe 312 in the longitudinal direction are respectively close to the ends of the liquid storage tank 200, and the liquid inlet branch pipes 313 are arranged on the branch liquid inlet pipe 312 at intervals in the longitudinal direction.

[0131] In some embodiments, the branch liquid inlet pipe 312 extends in the transverse direction, and a plurality of liquid inlet branch pipes 313 are arranged at intervals in the transverse direction.

[0132] Fig.16 2 is a schematic structural diagram of a sixth embodiment of a liquid storage tank 200 of the present invention. Fig.17 Schematic diagram of the flow of electrolyte in the sixth embodiment of the liquid storage tank 200 of the present invention when in use.

[0133] See also Fig.16 and Fig.17 In this embodiment, the liquid inlet pipe 310 is arranged at the top of the liquid storage tank 200, and the liquid inlet pipe 310 is located in the middle of the longitudinal direction of the liquid storage tank 200. The liquid outlet pipe 320 is arranged at the bottom of the liquid storage tank 200, and the liquid outlet pipe 320 is located in the middle of the longitudinal direction of the liquid storage tank 200. The position between the liquid inlet pipe 310 and the liquid outlet pipe 320 is arranged so that the electrolyte can move from the middle of the longitudinal direction of the top of the liquid storage tank 200 toward the middle of the longitudinal direction of the bottom of the liquid storage tank, and drive the electrolyte at both ends of the longitudinal direction of the liquid storage tank 200 to move toward the middle of the bottom.

[0134] In this embodiment, the structure of the liquid inlet pipe 310 refers to the structure of the liquid inlet pipe 310 in the fifth embodiment.

[0135] In this embodiment, the liquid outlet pipe 320 is arranged in the middle of the liquid storage tank 200 in the longitudinal direction, and the liquid outlet pipe 320 includes a main liquid outlet pipe 321 and a branch liquid outlet pipe 322; the outlet of the main liquid outlet pipe 321 extends out of the liquid storage tank 200; the branch liquid outlet pipe 322 is connected to the inlet of the main liquid outlet pipe 321, and the branch liquid inlet pipe 312 is formed with multiple inlets. The multiple inlets of the branch liquid inlet pipe 312 allow the electrolyte to enter the liquid outlet pipe 320 from the multiple inlets of the liquid outlet pipe 320, so that the flow of the electrolyte in the liquid storage tank 200 is more uniform.

[0136] Furthermore, the liquid outlet pipe 320 also includes a plurality of liquid outlet branches 323; the plurality of liquid outlet branches 323 are arranged at intervals along the length direction of the branch liquid outlet pipe 322, and one end of the plurality of liquid outlet branches 323 is connected to the branch liquid outlet pipe 322, so that the inlet of the liquid outlet pipe 320 is increased through the arrangement of the liquid outlet branch pipe 323, thereby making the flow of the electrolyte in the liquid storage tank 200 more uniform.

[0137] In this embodiment, the branch liquid outlet pipe 322 extends longitudinally, and both ends of the branch liquid outlet pipe 322 in the longitudinal direction are respectively close to the ends of the liquid storage tank 200, and the liquid outlet branch pipes 323 are arranged on the branch liquid outlet pipe 322 at intervals in the longitudinal direction.

[0138] In some embodiments, the branch liquid outlet pipe 322 extends in the transverse direction, and a plurality of liquid outlet branch pipes 323 are arranged at intervals in the transverse direction.

[0139] In one embodiment, a flow equalizing plate 290 is disposed in the liquid storage tank 200 to divide the space in the liquid storage tank 200 into multiple chambers, and the liquid storage branch pipes are respectively disposed in one chamber to make the flow of the electrolyte in the liquid storage tank 200 more uniform.

[0140] Based on the above structure, a plurality of partitions are further arranged in the liquid storage tank, and the plurality of partitions are arranged at intervals in the longitudinal direction to divide the chamber in the liquid storage tank into a plurality of compartments; a liquid inlet pipe and a liquid outlet pipe are respectively arranged in each compartment.

[0141] See again Figures 1 to 5 , the energy storage power station also includes a stack unit 400. A pipeline unit 500 is connected to the stack unit 400, and the pipeline unit 500 includes a plurality of pipes or pipelines. The stack unit 400 is respectively connected to the positive electrode storage tank 201 and the negative electrode storage tank 202 through the pipeline unit 500. The positive electrode storage tank 201, the negative electrode storage tank 202 and the stack unit 400 constitute the main structure of the liquid flow battery. The positive electrode electrolyte and the negative electrode electrolyte exchange electrons in the stack unit 400, thereby forming an electric current in the stack unit 400.

[0142] The positive electrode liquid storage tank 201, the negative electrode liquid storage tank 202 and the battery stack unit 400 are respectively arranged in different frames 100. The top and bottom of the frame 100 are provided with corner pieces so that they can be fixed on the transport vehicle and can be fixed and stacked with each other. This facilitates the transportation and installation of each unit in the energy storage power station, and enables the various units of the energy storage power station to be stacked with each other when in use, so as to occupy less space.

[0143] In this embodiment, the frame 100 includes a plurality of frames 100 of the same size; the positive electrode liquid storage tank 201, a negative electrode liquid storage tank 202 and the battery stack unit 400 are respectively arranged in one frame 100. The battery management system 700 and the battery stack unit 400 are arranged in the same frame 100 and are arranged at intervals up and down. Multiple frames 100 of the same size can be stacked on each other and transported separately. It is convenient for the transportation and installation of the energy storage power station, and enables the various units of the energy storage power station to be stacked on each other to occupy a smaller space.

[0144] The pipeline unit 500 is detachably connected to the positive electrode liquid storage tank 201 and the negative electrode liquid storage tank 202, so as to facilitate the installation of the energy storage power station and facilitate the rapid installation of the energy storage power station after it is moved to the installation location.

[0145] The energy storage power station also includes a magnetic pump 600, which is arranged in the pipeline unit 500; the magnetic pump 600 is arranged corresponding to the positive electrode liquid storage tank 201 and the negative electrode liquid storage tank 202 respectively, so as to be able to drive the positive electrode electrolyte to flow between the positive electrode liquid storage tank 201 and the battery stack unit 400, and to drive the negative electrode electrolyte to flow between the negative electrode liquid storage tank 202 and the battery stack unit 400.

[0146] The energy storage power station also includes a battery management system 700. The battery management system 700 and the battery stack unit 400 are arranged in the same frame 100 and are arranged with an upper and lower interval. The battery management system 700 includes a BMS (Battery Management System) and an EMS (Energy Management System).

[0147] Fig.18 It is a structural schematic diagram of the second embodiment of the energy storage power station of the present invention. Fig.19 yes Fig.18 Schematic diagram of the stacking of the structure.

[0148] See also Fig.18 and Fig.19 There are two positive electrode liquid storage tanks 201 and two negative electrode liquid storage tanks 202, respectively; the two positive electrode liquid storage tanks 201 are arranged in different frames 100; the two negative electrode liquid storage tanks 202 are arranged in different frames 100. The liquid storage tanks 200 containing the same electrolyte are connected by pipelines.

[0149] The multiple frames 100 include a first frame 110 , a second frame 120 and a third frame 130 ; the two second frames 120 and the third frame 130 can be fixed on the first frame 110 ; and the battery stack unit 400 is disposed in the third frame 130 .

[0150] In this embodiment, two first frames 110 are provided, and the two first frames 110 are fitted together in the longitudinal direction. A positive electrode liquid storage tank 201 and a negative electrode liquid storage tank 202 are respectively provided in the two first frames 110; the third frame 130 is clamped between the two second frames 120 in the longitudinal direction.

[0151] The two second frames 120 are used to install a positive electrode liquid storage tank 201 and a negative electrode liquid storage tank 202 respectively; the total length of the two second frames 120 and the third frame 130 along the longitudinal direction is equal to the total length of the two first frames 110 along the longitudinal direction. Thus, on the basis of ensuring that the energy storage power station occupies the smallest area on the horizontal plane, the structure formed by the energy storage power station has the largest volume, so that the positive electrode liquid storage tank 201 and the negative electrode liquid storage tank 202 of the largest volume can be accommodated, so that the energy storage power station has a larger energy storage capacity.

[0152] In this embodiment, two first frames 110, two second frames 120 and one third frame 130 constitute a frame structure of an energy storage power station. The two second frames 120 and one third frame 130 are fixed on the two first frames 110. The two second frames 120 are respectively located on both sides of the longitudinal direction of the third frame 130. The two ends of the longitudinal side of the third frame 130 are respectively fixedly connected to one first frame 110, and can also limit the two first frames 110.

[0153] The first frame 110, the two second frames 120 and the third frame 130 are connected by corner pieces when stacked. Corner pieces are arranged at corresponding positions on the first frame 110 to connect the second frame 120 and the third frame 130. A cross bar extending in the transverse direction is also arranged at the upper end of the first frame 110 to support the second frame 120 and the third frame 130.

[0154] Two first frames 110, two second frames 120 and one third frame 130 form a frame structure of a group of energy storage power stations. Multiple groups of energy storage power stations can be stacked on each other.

[0155] Fig. 20 It is a structural schematic diagram of the third embodiment of the energy storage power station of the present invention.

[0156] See also Fig. 20 , and combined Figures 1 to 19 In this embodiment, the energy storage power station refers to the structure of the energy storage power station in the second embodiment. The differences are:

[0157] In this embodiment, the frame 100 includes two frames 100 of the same size that can be stacked up and down; a positive electrode liquid storage tank 201 and a negative electrode liquid storage tank 202 are arranged in a longitudinal interval in one frame 100; a positive electrode liquid storage tank 201, a negative electrode liquid storage tank 202 and a battery stack unit 400 are arranged in the other frame 100. The battery management system 700 and the battery stack unit 400 are arranged in the same frame 100 and are arranged in an upper and lower interval.

[0158] In one embodiment, a positive electrode liquid storage tank 201 and a negative electrode liquid storage tank 202 are disposed in a liquid storage tank 200 and separated by a separator.

[0159] Fig.21 It is a structural schematic diagram of the fourth embodiment of the energy storage power station of the present invention.

[0160] See also Fig.21 , and combined Figures 1 to 20 In this embodiment, the energy storage power station includes a liquid flow energy storage tank box, a battery stack unit 400, a pipeline unit 500, an electronic control unit and a magnetic pump 600.

[0161] The liquid energy storage tank box in this embodiment can refer to any one of the liquid energy storage tank boxes in the above description. For example, a frame is provided with multiple liquid storage tanks, one frame is provided with one liquid storage tank, or one frame is provided with multiple liquid storage tanks.

[0162] In this embodiment, a plurality of battery stack units are provided, and the plurality of battery stack units are respectively provided in different frames. The plurality of frames provided with the battery stack units can be stacked on each other.

[0163] It should be noted that, in some embodiments, a plurality of liquid inlet pipes and a plurality of liquid outlet pipes are provided on the liquid storage tank; the plurality of liquid inlet pipes are arranged at intervals; the plurality of liquid outlet pipes are arranged at intervals, so that the flow of the electrolyte in the liquid storage tank is more uniform.

[0164] This application also provides an application of an energy storage power station:

[0165] The positive electrode electrolyte is contained in the positive electrode storage tank, and the negative electrode electrolyte is contained in the negative electrode storage tank; the entire frame of the energy storage power station is transported to the destination, so that the storage tank containing the electrolyte is transported to the destination together with the frame.

[0166] The electrolyte is contained in the liquid flow energy storage tank box, and the electrolyte can be transported together with the liquid flow energy storage tank box. The electrolyte does not need to be transported separately. And the liquid flow energy storage tank box with electrolyte can be transported separately with the frame, so that the corresponding liquid flow energy storage tank box can be directly replaced or added at the energy storage power station.

[0167] The liquid storage tank, the battery stack unit and the magnetic pump can be moved together with the corresponding frame, so that the entire energy storage power station can be transported together and installed together for use at the destination.

[0168] The frames transported to the destination are stacked and fixed by corner fittings. The pipeline unit is connected between the corresponding liquid storage tank and the battery stack unit, so that the positive electrode electrolyte can flow between the positive electrode liquid storage tank and the battery stack unit, and the negative electrode electrolyte can flow between the negative electrode liquid storage tank and the battery stack unit; so that current can be formed in the battery stack unit.

[0169] In the present invention, the frames 100 can be transported separately and can be stacked together for use by corner pieces after being transported to the destination. The frames 100 of the energy storage power station are stacked for use so that the energy storage power station occupies a smaller area. The detachable connection of the pipe unit 500 allows the positive electrode storage tank 201 and the negative electrode storage tank 202 in the frame 100 to be disassembled during transportation by the pipe unit 500 for easy transportation, and can be connected by the pipe unit 500 after transportation.

[0170] The energy storage power station is configured as a plurality of separate modules by means of the frame 100. The configuration of the plurality of separate modules facilitates transportation and stacking installation, facilitates the use of the liquid flow energy storage power station, and expands the application scenarios of the energy storage power station.

[0171] The positive electrode electrolyte and the negative electrode electrolyte are placed in different liquid storage tanks 200 respectively. The liquid flow energy storage tank box serves as a tank box structure, has a long service life and is easy to use, so that the liquid flow energy storage tank box and the electrolyte can be rented and used, reducing the user's initial construction cost.

[0172] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0173] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this specification, the description of the reference terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of contradiction, technicians in this field can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples.

[0174] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A liquid flow energy storage tank, characterized in that: include: A frame with corner fittings at the top and bottom; A liquid storage tank, which is used to contain electrolyte; the liquid storage tank is fixed in the frame; Liquid inlet pipe and liquid outlet pipe; The liquid inlet pipe is connected to the upper part of the liquid storage tank so as to be detachably connected to the liquid inlet pipe through a pipeline; the liquid outlet pipe is connected to the lower part of the liquid storage tank so as to be detachably connected to the liquid outlet pipe through a pipeline.

2. The liquid flow energy storage tank according to claim 1, characterized in that: The liquid storage tank is provided with a plurality of liquid inlet pipes and a plurality of liquid outlet pipes; the plurality of liquid inlet pipes are arranged at intervals; the plurality of liquid outlet pipes are arranged at intervals.

3. The liquid flow energy storage tank according to claim 1, characterized in that: The liquid inlet pipe comprises a main liquid inlet pipe and a branch liquid inlet pipe; the inlet of the main liquid inlet pipe extends out of the liquid storage tank; the branch liquid inlet pipe is connected to the outlet of the main liquid inlet pipe, and the branch liquid inlet pipe is formed with a plurality of outlets.

4. The liquid flow energy storage tank according to claim 3, characterized in that: The liquid inlet pipe also includes a plurality of liquid inlet branch pipes; the plurality of liquid inlet branch pipes are arranged at intervals along the length direction of the branch liquid inlet pipe, and one end of the plurality of liquid inlet branch pipes is connected to the branch liquid inlet pipe.

5. The liquid flow energy storage tank according to any one of claims 1 to 4, characterized in that: The liquid outlet pipe comprises a main liquid outlet pipe and a branch liquid outlet pipe; the outlet of the main liquid outlet pipe extends out of the liquid storage tank; the branch liquid outlet pipe is connected to the inlet of the main liquid outlet pipe, and the branch liquid outlet pipe is formed with a plurality of inlets.

6. The liquid flow energy storage tank according to claim 5, characterized in that: The liquid outlet pipe also includes a plurality of liquid outlet branch pipes; the plurality of liquid outlet branch pipes are arranged at intervals along the length direction of the branch liquid outlet pipe, and one end of the plurality of liquid outlet branch pipes is connected to the branch liquid outlet pipe.

7. The liquid flow energy storage tank according to claim 1, characterized in that: The liquid storage tank is provided with a temperature control unit for detecting and controlling the temperature of the electrolyte in the liquid storage tank.

8. The liquid flow energy storage tank according to claim 1, characterized in that: The outer circumference of the liquid storage tank is attached and fixed with a heat exchange component, the heat exchange component extends in the longitudinal direction, and the heat exchange component is a tubular structure with a heat exchange channel formed inside, and the heat exchange channel is used for the circulation of heat exchange medium.

9. The liquid flow energy storage tank according to claim 1, characterized in that: A liquid storage tank is provided at the bottom of the liquid storage tank, the liquid storage tank is provided on the outside of the liquid storage tank, and an alarm device is provided in the liquid storage tank.

10. The liquid flow energy storage tank according to claim 9, characterized in that: The liquid accumulation tank is provided with a liquid discharge port, and a liquid discharge pipe is arranged at the liquid discharge port to discharge the accumulated liquid in the liquid accumulation tank.

11. The liquid flow energy storage tank according to claim 1, characterized in that: A flow balancing plate is arranged in the liquid storage tank, and the flow balancing plate is arranged vertically in the liquid storage tank. A plurality of penetrating flow balancing holes are opened on the flow balancing plate.

12. The liquid flow energy storage tank according to claim 11, characterized in that: The outer peripheral edge of the flow balancing plate is fixed on the inner peripheral wall of the liquid storage tank, and a liquid passing groove is provided on the outer peripheral edge of the flow balancing plate.

13. The liquid flow energy storage tank according to claim 12, characterized in that: The shape of the liquid passage groove is one of arc, circle and polygon or a combination of any of them.

14. The liquid flow energy storage tank according to claim 11, characterized in that: A plurality of flow equalizing plates are arranged at intervals along the longitudinal direction.

15. The liquid flow energy storage tank according to claim 1, characterized in that: A plurality of partitions are also arranged in the liquid storage tank, and the plurality of partitions are arranged at intervals in the longitudinal direction to divide the chamber in the liquid storage tank into a plurality of compartments; a liquid inlet pipe and a liquid outlet pipe are respectively arranged in each of the compartments.

16. The liquid flow energy storage tank according to claim 1, characterized in that: The shell of the liquid storage tank is a structure made of metal material or carbon fiber material.

17. An energy storage power station, characterized in that: It comprises a battery stack unit, a pipeline unit, an electronic control unit, a magnetic pump and a liquid flow energy storage tank box as described in any one of claims 1 to 16; the frame is provided with a plurality of; The liquid storage tank comprises a positive electrode liquid storage tank and a negative electrode liquid storage tank; the positive electrode liquid storage tank contains positive electrode electrolyte; the positive electrode liquid storage tank is arranged in one or more of the frames; the negative electrode liquid storage tank contains negative electrode electrolyte; the negative electrode liquid storage tank is arranged in one or more of the frames; The battery stack unit is arranged in one or more of the frames; a pipeline unit is connected to the battery stack unit; the battery stack unit is respectively connected to the positive electrode liquid storage tank and the negative electrode liquid storage tank through the pipeline unit; the pipeline unit is detachably connected to the positive electrode liquid storage tank and the negative electrode liquid storage tank; The magnetic pump is arranged in the pipeline unit, and the magnetic pump and the battery stack unit are arranged in the same frame; the magnetic pump is respectively arranged corresponding to the positive electrode liquid storage tank and the negative electrode liquid storage tank, so as to be able to drive the positive electrode electrolyte to flow between the positive electrode liquid storage tank and the battery stack unit, and to be able to drive the negative electrode electrolyte to flow between the negative electrode liquid storage tank and the battery stack unit.

18. An application of an energy storage power station, characterized in that: Providing the energy storage power station according to claim 17; The positive electrode electrolyte is contained in the positive electrode storage tank, and the negative electrode electrolyte is contained in the negative electrode storage tank; Transporting all the frames of the energy storage power station to a destination, so that the liquid storage tank containing the electrolyte is transported to the destination together with the frames; stacking the frames transported to the destination and securing them by the corner fittings; The pipeline unit is connected between the corresponding liquid storage tank and the battery stack unit so that the positive electrode electrolyte can flow between the positive electrode liquid storage tank and the battery stack unit, and the negative electrode electrolyte can flow between the negative electrode liquid storage tank and the battery stack unit; thereby, current can be formed in the battery stack unit.

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