Modularized all-vanadium redox flow battery energy storage device

Abstract

The utility model discloses a modularized all-vanadium redox flow battery energy storage device which comprises a container, a sealing door is rotatably connected to the interior of the front side wall of the container, a blocking frame is fixedly connected to the position, located on the right rear side of the sealing door, in the container, and an identity recognition assembly is arranged in the front side wall of the sealing door; a modularized electric pile system, a battery management system, a main control box and a water chilling unit are sequentially installed in the container from left to right, a water cooling circulation assembly is installed on the outer side wall of the modularized electric pile system, and a protective sleeve is slidably connected to the position, located on the outer side of the modularized electric pile system, of the lower inner wall of the container. And a safe cooling box is mounted in the protective sleeve. According to the utility model, the refrigerant absorbing heat can heat the heat absorption pad after entering the circulating coil pipe, so that the heat dissipation effect of the refrigerant can be effectively improved while the overall heat preservation effect of the container is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of all-vanadium liquid flow batteries, in particular to a modular all-vanadium liquid flow battery energy storage device. Background Art

[0002] The all-vanadium liquid flow battery energy storage power station is a new type of environmentally friendly energy storage power station, which has the advantages of safety, environmental protection, high efficiency, long service life and flexible design. At present, most all-vanadium liquid flow battery energy storage power stations are container-type designs, in which all or part of the battery components are installed in the container, and the functions of each component are realized through the battery management system.

[0003] Temperature changes have a significant impact on the performance of all-vanadium liquid flow batteries. Studies have shown that higher temperatures are more conducive to the mass transfer process of ions, while at low temperatures, the diffusion of vanadium ions on the electrode surface is weakened, which has a significant restrictive effect on the electrode reaction. The all-vanadium liquid flow battery energy storage device in the container is generally set outdoors. When in the wild, the low temperature environment in the container is not conducive to the normal use of the all-vanadium liquid flow battery energy storage device. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a modular all-vanadium liquid flow battery energy storage device, in which a heat-insulating layer is installed inside a container, and the refrigerant that has absorbed heat enters the circulation coil and heats the heat-absorbing pad, thereby improving the overall heat-insulating effect of the container and effectively improving the heat dissipation effect of the refrigerant, and effectively improving the outdoor use effect of the all-vanadium liquid flow battery energy storage device;

[0005] The device is provided with a safety cooling box. When the temperature sensor in the modular battery stack system detects that the temperature of the modular battery stack system is greater than the preset value, the main control box controls the valve of the electromagnetic control valve to open, so that the liquid nitrogen in the liquid nitrogen storage tank in the safety cooling box is discharged through the outlet pipe and the outlet. The air guide fan can effectively accelerate the flow of liquid nitrogen, so that the liquid nitrogen can continuously cool down the modular battery stack system, thereby improving the safety of the modular battery stack system.

[0006] The utility model also provides a modular all-vanadium liquid flow battery energy storage device as described above, comprising: a container, a sealed door is rotatably connected inside the front side wall of the container, a retaining frame is fixedly connected inside the container and directly behind the sealed door, an identity recognition component is arranged inside the front side wall of the sealed door, and the side walls of the container are arranged from outside to inside in sequence as a sound insulation layer, a heat preservation layer, a waterproof layer and a protective layer;

[0007] The interior of the container is installed with a modular battery stack system, a battery management system, a main control box and a chiller from left to right. The outer wall of the modular battery stack system is installed with a water cooling circulation component. The lower inner wall of the container is slidably connected to the outer side of the modular battery stack system with a protective cover, and a safety cooling box is installed inside the protective cover. A plurality of liquid nitrogen storage tanks are arranged inside the safety cooling box.

[0008] According to the modular all-vanadium liquid flow battery energy storage device, a sealing gasket is fixedly connected to one side wall of the retaining frame close to the sealing door to improve the sealing between the sealing door and the retaining frame. The sealing gasket is made of silicone material. An electromagnetic suction block is fixedly connected to the inside of the retaining frame close to the right side. The electromagnetic suction block cooperates with the sealing door. When the electromagnetic suction block is energized, it will generate a magnetic field, thereby being able to adsorb the iron material in the sealing door.

[0009] According to the modular all-vanadium liquid flow battery energy storage device, a fingerprint recognition component and an NFC recognition component are installed inside the front side wall of the identity recognition component. The fingerprint recognition component and the NFC recognition component can respectively recognize the user's fingerprint or NFC card, thereby greatly facilitating identity recognition. A handle is fixedly connected to the front side wall of the sealed door to facilitate opening the sealed door.

[0010] According to the modular all-vanadium liquid flow battery energy storage device, the sound insulation layer is made of sound insulation felt material to improve the sound insulation effect of the container, the waterproof layer is made of EVA material to improve the waterproof effect of the container, the protective layer is made of stainless steel material to improve the overall strength and service life of the container, and the upper side wall of the container is provided with a plurality of reinforcement grooves to improve the impact resistance of the upper side wall of the container.

[0011] According to the modular all-vanadium liquid flow battery energy storage device, the interior of the thermal insulation layer is filled with a heat-absorbing pad to absorb the heat dissipated by the circulating coil, and a circulating coil is installed inside the heat-absorbing pad to dissipate the heat of the refrigerant that absorbs heat from the water-cooled circulation component. The water inlet end of the circulating coil is connected to the output end of the water-cooled circulation component, and the water outlet end of the circulating coil is connected to the water inlet end of the chiller.

[0012] According to the modular all-vanadium liquid flow battery energy storage device, a circulating water pump is installed inside the chiller, and the output end of the circulating water pump is connected to the inlet end of the water-cooled circulation component. An air-cooled component is arranged inside the chiller to accelerate the heat dissipation of the circulating refrigerant. The water-cooled circulation component is connected to the heating element of the modular battery stack system through a cold plate, so that the refrigerant in the water-cooled circulation component can absorb the heat of the heating element of the modular battery stack system.

[0013] According to the modular all-vanadium liquid flow battery energy storage device, the modular battery stack system is composed of a power unit, an energy unit and an electrolyte transport unit. The power unit is composed of a battery stack, and the battery stack is composed of ion exchange membranes, electrodes, bipolar plates, electrode frames, seals and other materials. The energy unit is composed of electrolyte and electrolyte storage tanks, and the electrolyte transport unit is composed of auxiliary components such as pipelines, valves, pumps, and sensors. A temperature sensor is provided in the modular battery stack system.

[0014] According to the modular all-vanadium liquid flow battery energy storage device, the gas outlet end of the liquid nitrogen storage tank is fixedly connected to an electromagnetic control valve, a pressure sensor is installed on one side of the electromagnetic control valve, the gas outlet end of the electromagnetic control valve is fixedly connected to an outlet pipe, one end of the outlet pipe is fixedly connected to an outlet port, and the outlet port is arranged in the middle of the upper side wall of the safety cooling box to facilitate the discharge of liquid nitrogen in the liquid nitrogen storage tank.

[0015] According to the modular all-vanadium liquid flow battery energy storage device, a sealing frame is fixedly connected to the upper side wall of the safety cooling box, the sealing frame is fixedly connected to the upper inner wall of the protective cover, an air outlet gap is arranged between the sealing frame and the left inner wall of the safety cooling box, an air guide fan is installed between the sealing frame and the left inner wall of the protective cover, which can effectively accelerate the flow of liquid nitrogen, and four rows of guide plates are installed inside the protective cover, and the liquid nitrogen can effectively absorb the heat on the guide plates, so that the guide plates are in a low temperature state, thereby continuously cooling down.

[0016] According to the modular all-vanadium liquid flow battery energy storage device, a plurality of air outlet grooves are installed inside the rear side wall of the container, and a dust filter is fixedly connected to a side wall of the air outlet groove close to the inside of the container, which can effectively prevent external dust from entering the inside of the container. An air outlet fan is installed inside the air outlet groove to accelerate the heat dissipation inside the container.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the structure of a modular all-vanadium liquid flow battery energy storage device of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of a modular all-vanadium liquid flow battery energy storage device of the utility model;

[0021] Figure 3This is an internal schematic diagram of a modular all-vanadium liquid flow battery energy storage device of the utility model;

[0022] Figure 4 This is a schematic diagram of the interior of a safety cooling box in a modular all-vanadium liquid flow battery energy storage device of the utility model;

[0023] Figure 5 This is a schematic cross-sectional view of the side wall of a container in a modular all-vanadium liquid flow battery energy storage device of the utility model;

[0024] Figure 6 This is a schematic diagram of the interior of the insulation layer in a modular all-vanadium liquid flow battery energy storage device of the utility model.

[0025] Legend:

[0026] 1. Container; 101. Reinforcement groove; 102. Baffle; 103. Electromagnetic suction block; 104. Sound insulation layer; 105. Insulation layer; 1051. Heat absorption pad; 1052. Circulation coil; 106. Waterproof layer; 107. Protective layer; 2. Sealed door; 201. Handle; 202. Identity recognition component; 2021. Fingerprint recognition component; 2022. NFC recognition component; 3. Modular battery stack system; 4. Battery management system; 5. Main control box; 6. Chiller; 7. Safety cooling box; 701. Sealed frame; 702. Liquid nitrogen storage tank; 703. Electromagnetic control valve; 704. Exhaust pipe; 705. Exhaust port; 706. Air pressure sensor; 707. Air guide fan; 8. Protective cover; 801. Guide plate; 9. Exhaust slot; 901. Dust filter; 902. Exhaust fan; 10. Water cooling circulation component. DETAILED DESCRIPTION

[0027] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Reference Figure 1-6 The utility model embodiment is a modular all-vanadium liquid flow battery energy storage device, which includes: a container 1, a sealed door 2 is rotatably connected inside the front side wall of the container 1, a retaining frame 102 is fixedly connected inside the container 1 and located directly behind the sealed door 2, a sealing gasket is fixedly connected to a side wall of the retaining frame 102 close to the sealed door 2 to improve the sealing between the sealed door 2 and the retaining frame 102, the sealing gasket is made of silicone material, an electromagnetic suction block 103 is fixedly connected inside the retaining frame 102 and close to the right side, the electromagnetic suction block 103 cooperates with the sealed door 2, and the electromagnetic suction block 103 will generate a magnetic field after being energized, thereby being able to adsorb the iron material in the sealed door 2.

[0030] An identity recognition component 202 is provided inside the front side wall of the sealed door 2. A fingerprint recognition component 2021 and an NFC recognition component 2022 are installed inside the front side wall of the identity recognition component 202. The fingerprint recognition component 2021 and the NFC recognition component 2022 can respectively recognize the user's fingerprint or NFC card, thereby greatly facilitating identity recognition. A handle 201 is fixedly connected to the front side wall of the sealed door 2 to facilitate opening the sealed door 2.

[0031] The side walls of the container 1 are sequentially provided with a sound insulation layer 104, a heat preservation layer 105, a waterproof layer 106 and a protective layer 107 from the outside to the inside. The sound insulation layer 104 is made of a sound insulation felt material to improve the sound insulation effect of the container 1. The waterproof layer 106 is made of an EVA material to improve the waterproof effect of the container 1. The protective layer 107 is made of a stainless steel material to improve the overall strength and service life of the container 1. A plurality of reinforcement grooves 101 are provided on the upper side wall of the container 1 to improve the impact resistance of the upper side wall of the container 1.

[0032] The interior of the thermal insulation layer 105 is filled with a heat-absorbing pad 1051 to absorb the heat dissipated by the circulating coil 1052. The interior of the heat-absorbing pad 1051 is installed with a circulating coil 1052 to dissipate the heat of the refrigerant that has absorbed heat from the water-cooling circulation component 10. The water inlet end of the circulating coil 1052 is connected to the output end of the water-cooling circulation component 10, and the water outlet end of the circulating coil 1052 is connected to the water inlet end of the chiller 6.

[0033] The interior of the container 1 is installed with a modular battery stack system 3, a battery management system 4, a main control box 5 and a chiller 6 from left to right. A water cooling circulation component 10 is installed on the outer wall of the modular battery stack system 3. A circulating water pump is installed inside the chiller 6. The output end of the circulating water pump is connected to the inlet end of the water cooling circulation component 10. An air cooling component is arranged inside the chiller 6 to accelerate the heat dissipation of the circulating refrigerant. The water cooling circulation component 10 is connected to the heating element of the modular battery stack system 3 through a cold plate, so that the refrigerant in the water cooling circulation component 10 can absorb the heat of the heating element of the modular battery stack system 3.

[0034] The modular fuel cell system 3 consists of a power unit, an energy unit and an electrolyte transport unit. The power unit consists of a fuel cell, and the fuel cell stack is composed of ion exchange membranes, electrodes, bipolar plates, electrode frames, seals and other materials. The energy unit consists of electrolyte and electrolyte storage tanks. The electrolyte transport unit is composed of auxiliary components such as pipelines, valves, pumps, sensors, etc. A temperature sensor is provided in the modular fuel cell system 3.

[0035] A protective sleeve 8 is slidably connected to the lower inner wall of the container 1 and located on the outer side of the modular battery stack system 3. A safety cooling box 7 is installed inside the protective sleeve 8. A plurality of liquid nitrogen storage tanks 702 are arranged inside the safety cooling box 7. An electromagnetic control valve 703 is fixedly connected to the gas outlet end of the liquid nitrogen storage tank 702. A pressure sensor 706 is installed on one side of the electromagnetic control valve 703. An outlet pipe 704 is fixedly connected to the gas outlet end of the electromagnetic control valve 703. An outlet port 705 is fixedly connected to one end of the outlet pipe 704. The outlet port 705 is arranged in the middle of the upper side wall of the safety cooling box 7 for convenience. The liquid nitrogen in the liquid nitrogen storage tank 702 is discharged, and a sealing frame 701 is fixedly connected to the upper side wall of the safety cooling box 7. The sealing frame 701 and the upper inner wall of the protective cover 8 are fixedly connected. An air outlet gap is arranged between the sealing frame 701 and the left inner wall of the safety cooling box 7. An air guide fan 707 is installed between the sealing frame 701 and the left inner wall of the protective cover 8, which can effectively accelerate the flow of liquid nitrogen. Four rows of guide plates 801 are installed inside the protective cover 8. The liquid nitrogen can effectively absorb the heat on the guide plates 801, so that the guide plates 801 are in a low temperature state, thereby continuously cooling down.

[0036] The electrical components appearing in this article are all electrically connected to an external main control box 5, and the main control box 5 can be a conventional known device for control such as a computer, and the electrical components appearing in this article are all electrically connected to an external power source.

[0037] Working principle: The modular battery stack system 3 stores and releases electrical energy through the redox reaction of vanadium ions with different valence states in the electrolyte on the electrode surface. The positive electrode electrolyte contains tetravalent and pentavalent vanadium ions, and the negative electrode electrolyte contains divalent and trivalent vanadium ions. The redox reaction of these vanadium ions with different valence states realizes the mutual conversion of electrical energy and chemical energy. During the operation of the modular battery stack system 3, the circulating water pump in the chiller 6 can pump the refrigerant into the water cooling circulation component 10. The refrigerant in the water cooling circulation component 10 can absorb the heat of the heating elements of the modular battery stack system 3, thereby effectively improving the heat dissipation effect of the modular battery stack system 3. The refrigerant that has absorbed the heat enters the circulation coil 1052 and then The heat-absorbing pad 1051 is heated, which can effectively improve the heat dissipation effect of the refrigerant while improving the overall thermal insulation effect of the container 1. When the temperature sensor in the modular battery stack system 3 detects that the temperature of the modular battery stack system 3 is greater than the preset value, the main control box 5 controls the solenoid control valve 703 to open, so that the liquid nitrogen in the liquid nitrogen storage tank 702 is discharged through the outlet pipe 704 and the outlet 705, and the air guide fan 707 can effectively accelerate the flow of liquid nitrogen, so that the liquid nitrogen continues to cool the modular battery stack system 3, thereby improving the safety of the modular battery stack system 3.

[0038] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A modular all-vanadium liquid flow battery energy storage device, characterized in that: include: A container (1), wherein a sealed door (2) is rotatably connected to the interior of a front side wall of the container (1), a retaining frame (102) is fixedly connected to the interior of the container (1) and located directly behind the sealed door (2), an identification component (202) is arranged inside the front side wall of the sealed door (2), and the side walls of the container (1) are arranged, from the outside to the inside, in sequence as a sound insulation layer (104), a heat insulation layer (105), a waterproof layer (106), and a protective layer (107); The interior of the container (1) is installed with a modular battery stack system (3), a battery management system (4), a main control box (5) and a chiller (6) in sequence from left to right; the outer wall of the modular battery stack system (3) is installed with a water cooling circulation component (10); the lower inner wall of the container (1) is slidably connected to the outer side of the modular battery stack system (3) with a protective sleeve (8); a safety cooling box (7) is installed inside the protective sleeve (8); and a plurality of liquid nitrogen storage tanks (702) are arranged inside the safety cooling box (7).

2. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: A sealing gasket is fixedly connected to a side wall of the retaining frame (102) close to the sealing door (2), and the sealing gasket is made of a silicone material. An electromagnetic suction block (103) is fixedly connected inside the retaining frame (102) and close to the right side, and the electromagnetic suction block (103) cooperates with the sealing door (2).

3. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: A fingerprint recognition component (221) and an NFC recognition component (222) are installed inside the front side wall of the identity recognition component (202), and a handle (201) is fixedly connected to the front side wall of the sealed door (2).

4. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: The sound insulation layer (104) is made of sound insulation felt material, the waterproof layer (106) is made of EVA material, the protective layer (107) is made of stainless steel material, and the upper side wall of the container (1) is provided with a plurality of reinforcement grooves (101).

5. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: The interior of the thermal insulation layer (105) is filled with a heat absorbing pad (1051), and a circulating coil (1052) is installed inside the heat absorbing pad (1051). The water inlet end of the circulating coil (1052) is connected to the output end of the water cooling circulation component (10), and the water outlet end of the circulating coil (1052) is connected to the water inlet end of the chiller (6).

6. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: A circulating water pump is installed inside the water chiller (6), the output end of the circulating water pump is connected to the inlet end of the water cooling circulation component (10), an air cooling component is arranged inside the water chiller (6), and the water cooling circulation component (10) is connected to the heating element of the modular fuel cell stack system (3) via a cold plate.

7. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: The modular battery stack system (3) consists of a power unit, an energy unit and an electrolyte transport unit.

8. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: The gas outlet end of the liquid nitrogen storage tank (702) is fixedly connected to an electromagnetic control valve (703), a pressure sensor (706) is installed on one side of the electromagnetic control valve (703), the gas outlet end of the electromagnetic control valve (703) is fixedly connected to an outlet pipe (704), one end of the outlet pipe (704) is fixedly connected to an outlet port (705), and the outlet port (705) is arranged in the middle of the upper side wall of the safety cooling box (7).

9. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: A sealing frame (701) is fixedly connected to the upper side wall of the safety cooling box (7); the sealing frame (701) is fixedly connected to the upper inner wall of the protective cover (8); an air outlet gap is provided between the sealing frame (701) and the left inner wall of the safety cooling box (7); an air guide fan (707) is installed between the sealing frame (701) and the left inner wall of the protective cover (8); and four rows of guide plates (801) are installed inside the protective cover (8).

10. A modular all-vanadium liquid flow battery energy storage device according to claim 1, characterized in that: A plurality of air outlet slots (9) are installed inside the rear side wall of the container (1); a dust filter (901) is fixedly connected to a side wall of the air outlet slot (9) close to the inside of the container (1); and an air outlet fan (902) is installed inside the air outlet slot (9).

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