Household flow battery energy storage system

Abstract

The utility model discloses a household flow battery energy storage system which comprises an energy storage system box body, an electric control cabinet is fixedly installed on the upper portion of the right end of the energy storage system box body, and a box door is installed at the front end of the energy storage system box body in a hinged mode. A positive electrode liquid storage tank and a negative electrode liquid storage tank are fixedly mounted on the lower inner wall of the energy storage system box body, and an electric pile and an electrolyte circulating system are fixedly mounted at the front parts of the upper ends of the positive electrode liquid storage tank and the negative electrode liquid storage tank. According to the utility model, the pipeline is arranged between the positive electrode liquid storage tank and the negative electrode liquid storage tank, and the water seal liquid adding ball valve, the water seal liquid discharging ball valve and the water seal balancing ball valve are arranged on the pipeline, so that the liquid level balance of the positive electrode liquid storage tank and the negative electrode liquid storage tank is controlled, and meanwhile, the whole pipeline system is sealed under a certain pressure; and the electric pile, the storage tank, the electric control cabinet and other components in the device are compact in structural design, the internal space utilization rate is high, the use requirements of families or small energy storage scenes are met, and standardization of a production mode is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of liquid flow battery, especially to a household type liquid flow battery energy storage system. BACKGROUND

[0002] The liquid flow battery is a new energy storage technology route, and its principle is that positive and negative electrode liquid is stored in positive and negative electrode liquid storage tanks, electrolyte enters the stack through a pipeline under the action of a circulating pump, ions in the electrolyte on both sides of the diaphragm in the stack move directionally to generate current, the electrode plate collects and conducts the current to realize the conversion between chemical energy and electric energy.

[0003] The liquid flow battery energy storage system is highly integrated, has high power and large capacity, is mostly integrated in a large container, is applied to large energy storage power stations, cannot meet the needs of small application scenarios, and few household type liquid flow battery energy storage systems exist, and most products have large technical differences, so it is difficult to implement a standardized production mode and cannot meet the application scenarios of families and small environments. UTILITY MODEL CONTENTS

[0004] The utility model mainly aims at providing a household type liquid flow battery energy storage system, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that

[0006] A household type liquid flow battery energy storage system, comprising an energy storage system box body, an electrical control cabinet is fixedly installed on the upper part of the right end of the energy storage system box body, and a box door is hingedly installed on the front end of the energy storage system box body; positive and negative liquid storage tanks are fixedly installed on the inner wall of the lower part of the energy storage system box body, respectively; an electric pile and an electrolyte circulating system are fixedly installed on the front part of the upper end of the positive and negative liquid storage tanks.

[0007] Preferably, the electrolyte circulation system comprises a positive electrode circulation pump, a negative electrode circulation pump, an SOC positive electrode inlet and an SOC negative electrode inlet, the electric pile is provided with an electric pile positive electrode outlet and an electric pile negative electrode outlet, a first liquid inlet pipeline is arranged between the positive electrode circulation pump and the electric pile positive electrode outlet, and a first liquid inlet pipeline is arranged between the positive electrode circulation pump and the electric pile positive electrode outlet.

[0008] Preferably, the negative electrode circulation pump and the electric pile negative electrode outlet are provided with a second liquid inlet pipeline, and the second liquid inlet pipeline is provided with an electric pile negative electrode inlet ball valve; the electric pile negative electrode outlet and the negative electrode storage tank are provided with a second liquid outlet pipeline, and the second liquid outlet pipeline is provided with an electric pile negative electrode outlet ball valve; the negative electrode storage tank and the negative electrode circulation pump are provided with a second connecting pipeline, and the second connecting pipeline is provided with a negative electrode circulation pump inlet ball valve; and the second liquid inlet pipeline and the second liquid outlet pipeline are provided with a second liquid mixing pipeline, and the second liquid mixing pipeline is provided with a negative electrode mixing ball valve; the pipeline system controls the circulation and stop of the negative electrode electrolyte of the electric pile.

[0009] Preferably, the SOC positive electrode inlet and the first liquid inlet pipeline are provided with a first mounting pipe, and the first mounting pipe is provided with an SOC positive electrode inlet ball valve; the SOC positive electrode inlet and the first liquid outlet pipeline are provided with a second mounting pipe, and the second mounting pipe is provided with an SOC positive electrode outlet ball valve; the SOC negative electrode inlet and the second liquid inlet pipeline are provided with a third mounting pipe, and the third mounting pipe is provided with an SOC negative electrode inlet ball valve; and the SOC negative electrode inlet and the second liquid outlet pipeline are provided with a fourth mounting pipe, and the fourth mounting pipe is provided with an SOC negative electrode outlet ball valve; the pipeline system controls the circulation and stop of the SOC electrolyte.

[0010] Preferably, the positive electrode storage tank and the negative electrode storage tank are provided with a pipeline, and the pipeline is provided with a water seal adding liquid ball valve, a water seal liquid discharge ball valve and a water seal balance ball valve. The pipeline system controls the liquid level balance of the positive and negative electrode storage tanks, and also plays a sealing role under a certain pressure for the whole pipeline system. In addition, the whole device has a compact structure and small overall size, and is convenient for transportation, use and operation and maintenance. In addition, the device meets the use requirements of a family or a small energy storage scene, and is convenient for production mode standardization.

[0011] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0012] 1、The energy storage system stack, storage tank, electrical control cabinet and other component structure design is compact, and the internal space utilization rate is high.

[0013] 2、The overall size of the energy storage system is small, facilitating transportation, use and operation and maintenance.

[0014] 3、The energy storage system meets the use requirements of household or small energy storage scenes, and is convenient for production mode standardization. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure schematic view of the household type liquid flow battery energy storage system of the utility model;

[0016] Fig. 2 It is a whole structure schematic view of the electrolyte circulating system of the household type liquid flow battery energy storage system of the utility model.

[0017] Fig. 3 It is a whole structure schematic view of the electrolyte circulating system of the household type liquid flow battery energy storage system of the utility model.

[0018] In the drawing: 1, energy storage system box; 2, electrical control cabinet; 3, box door; 4, positive electrode liquid storage tank; 5, negative electrode liquid storage tank; 6, stack; 7, electrolyte circulating system; 8, positive electrode circulating pump; 9, negative electrode circulating pump; 10, stack positive electrode outlet; 11, stack negative electrode outlet; P01, positive electrode circulating pump inlet ball valve; P02, stack positive electrode inlet ball valve; P03, stack positive electrode outlet ball valve; P04, SOC positive electrode inlet ball valve; P05, SOC positive electrode outlet ball valve; P06, positive electrode mixed liquid ball valve; N01, negative electrode circulating pump inlet ball valve; N02, stack negative electrode inlet ball valve; N03, stack negative electrode outlet ball valve; N04, SOC negative electrode inlet ball valve; N05, SOC negative electrode outlet ball valve; N06, negative electrode mixed liquid ball valve; W01, water seal liquid adding ball valve; W02, water seal liquid discharging ball valve; W03, water seal balance ball valve. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0020] In the description of the utility model, it needs to explain, the term "upper", "lower", "internal", "external" "front end", "rear end", "both ends", "one end", "the other end" and so on indicate the position relation or position relation based on the position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the utility model, it needs to explain, unless otherwise specified and limited, the term "installation", "provided with", "connection" and so on, should be understood broadly, for example, "connection", can be fixed connection, can also be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] As shown in Figs. 1-3 A household type liquid flow battery energy storage system, comprising an energy storage system box body 1, the energy storage system box body 1 right end upper part is fixedly installed with electrical control cabinet 2, the energy storage system box body 1 front end is hingedly installed with box door 3;The lower inner wall of energy storage system box body 1 is fixedly installed with positive electrode liquid storage tank 4 and negative electrode liquid storage tank 5 respectively, and the upper end front part of positive electrode liquid storage tank 4 and negative electrode liquid storage tank 5 is fixedly installed with electric pile 6 and electrolyte circulating system 7.

[0023] Electrolyte circulating system 7 includes positive electrode circulating pump 8, negative electrode circulating pump 9, SOC positive electrode inlet 12 and SOC negative electrode inlet 13, and electric pile positive electrode outlet 10 and electric pile negative electrode outlet 11 are installed on electric pile 6, a number of inlet liquid pipe lines are installed between positive electrode circulating pump 8 and electric pile positive electrode outlet 10, and electric pile positive electrode inlet ball valve P02 is installed on a number of inlet liquid pipe lines, a number of outlet liquid pipe lines are arranged between negative electrode circulating pump 9 and electric pile negative electrode outlet 11, and electric pile positive electrode outlet ball valve P03 is installed on a number of outlet liquid pipe lines, a number of connecting pipe lines are installed between positive electrode liquid storage tank 4 and positive electrode circulating pump 8, and positive electrode circulating pump inlet ball valve P01 is installed on a number of connecting pipe lines, a number of mixing liquid pipe lines are installed between a number of inlet liquid pipe lines and a number of outlet liquid pipe lines, and positive electrode mixing ball valve P06 is installed on a number of mixing liquid pipe lines;This part of pipe system controls the circulation and stop of electric pile positive electrode electrolyte.

[0024] The second liquid inlet pipeline is installed between the negative circulating pump 9 and the stack negative outlet 11, and the stack negative inlet ball valve N02 is installed on the second liquid inlet pipeline. The second liquid outlet pipeline is installed between the stack negative outlet 11 and the negative liquid storage tank 5, and the stack negative outlet ball valve N03 is installed on the second liquid outlet pipeline. The second connecting pipeline is installed between the negative liquid storage tank 5 and the negative circulating pump 9, and the negative circulating pump inlet ball valve N01 is installed on the second connecting pipeline. The second liquid mixing pipeline is installed between the second liquid inlet pipeline and the second liquid outlet pipeline, and the negative liquid mixing ball valve N06 is installed on the second liquid mixing pipeline. This part of the pipeline system controls the circulation and stop of the stack negative electrolyte.

[0025] The first installation pipeline is installed between the SOC positive inlet 12 and the first liquid inlet pipeline, and the SOC positive inlet ball valve P04 is installed on the first installation pipeline. The second installation pipeline is installed between the SOC positive inlet 12 and the first liquid outlet pipeline, and the SOC positive outlet ball valve P05 is installed on the second installation pipeline. The third installation pipeline is installed between the SOC negative inlet 13 and the second liquid inlet pipeline, and the SOC negative inlet ball valve N04 is installed on the third installation pipeline. The fourth installation pipeline is installed between the SOC negative inlet 13 and the second liquid outlet pipeline, and the SOC negative outlet ball valve N05 is installed on the fourth installation pipeline. This part of the pipeline system controls the circulation and stop of the SOC electrolyte.

[0026] The pipeline is installed between the positive liquid storage tank 4 and the negative liquid storage tank 5, and the water seal liquid adding ball valve W01, the water seal liquid discharging ball valve W02, and the water seal balance ball valve W03 are installed on the pipeline. This part of the pipeline system controls the liquid level balance of the positive and negative liquid storage tanks, and also plays a sealing role under a certain pressure for the overall pipeline system. In addition, the overall structure of the device is compact, the overall size is small, and it is convenient for transportation, use, and operation and maintenance. Moreover, it meets the use requirements of a family or a small-scale energy storage scene, and is convenient for production mode standardization.

[0027] It should be noted that the utility model is a kind of household liquid flow battery energy storage system, before system operation, by removing the positive pole liquid storage tank 4 and the negative pole liquid storage tank 5 on the storage tank top flange blind plate, expose flange mouth, by flange mouth electrolyte is added into tank, when positive pole and negative pole electrolyte mixed liquid, positive pole mixed liquid ball valve P06, negative pole mixed liquid ball valve N06 operation is closed, only limit period maintenance is opened, positive pole and negative pole storage tank liquid level is roughly equivalent, after liquid level balance, enter the operation preparation stage.Before starting, all valves are in correct state, ensure that positive pole circulation pump inlet ball valve P01, negative pole circulation pump inlet ball valve N01 are opened, stack positive pole inlet ball valve P02, stack positive pole outlet ball valve P03 are opened, stack negative pole inlet ball valve N02, stack negative pole outlet ball valve N03 are opened, SOC positive pole inlet ball valve P04, SOC positive pole outlet ball valve P05, SOC negative pole inlet ball valve N04, SOC negative pole outlet ball valve N05 are opened, water seal liquid adding ball valve W01, water seal liquid discharging ball valve W02, water seal balance ball valve W03 are closed, and a certain amount of liquid is added through water seal liquid adding ball valve W01, simultaneously start positive pole circulation pump 8, negative pole circulation pump 9, and when operating, pay attention to observe the display value of pressure gauge, observe the starting state of pump in running process, whether there is abnormal sound, check circulation system and stack, whether there is leakage.

[0028] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A residential flow battery energy storage system comprising an energy storage system cabinet (1), characterized in that: The energy storage system box (1) is fixedly installed with an electrical control cabinet (2) on the upper right end, and is hingedly installed with a box door (3) on the front end; positive and negative liquid storage tanks (4) and (5) are respectively fixedly installed on the lower inner wall of the energy storage system box (1), and an electric pile (6) and an electrolyte circulating system (7) are jointly fixedly installed on the front upper end of the positive and negative liquid storage tanks (4) and (5).

2. A residential flow battery energy storage system according to claim 1, wherein: The electrolyte circulating system (7) comprises positive and negative circulating pumps (8) and (9), SOC positive and negative inlet ports (12) and (13), and the electric pile (6) is provided with an electric pile positive outlet port (10) and an electric pile negative outlet port (11), a first liquid inlet pipeline is installed between the positive circulating pump (8) and the electric pile positive outlet port (10), and an electric pile positive inlet port ball valve (P02) is installed on the first liquid inlet pipeline, a first liquid outlet pipeline is arranged between the negative circulating pump (9) and the electric pile negative outlet port (11), and an electric pile negative outlet port ball valve (P03) is installed on the first liquid outlet pipeline, a first connecting pipeline is installed between the positive liquid storage tank (4) and the positive circulating pump (8), and a positive circulating pump inlet port ball valve (P01) is installed on the first connecting pipeline, a first mixing pipeline is installed between the first liquid inlet pipeline and the first liquid outlet pipeline, and a positive mixing ball valve (P06) is installed on the first mixing pipeline; a second liquid inlet pipeline is installed between the negative circulating pump (9) and the electric pile negative outlet port (11), and an electric pile negative inlet port ball valve (N02) is installed on the second liquid inlet pipeline, a second liquid outlet pipeline is installed between the electric pile negative outlet port (11) and the negative liquid storage tank (5), and an electric pile negative outlet port ball valve (N03) is installed on the second liquid outlet pipeline, a second connecting pipeline is installed between the negative liquid storage tank (5) and the negative circulating pump (9), and a negative circulating pump inlet port ball valve (N01) is installed on the second connecting pipeline, a second mixing pipeline is installed between the second liquid inlet pipeline and the second liquid outlet pipeline, and a negative mixing ball valve (N06) is installed on the second mixing pipeline; a first mounting pipeline is installed between the SOC positive inlet port (12) and the first liquid inlet pipeline, and an SOC positive inlet port ball valve (P04) is installed on the first mounting pipeline, a second mounting pipeline is installed between the SOC positive inlet port (12) and the first liquid outlet pipeline, and an SOC positive outlet port ball valve (P05) is installed on the second mounting pipeline, a third mounting pipeline is installed between the SOC negative inlet port (13) and the second liquid inlet pipeline, and an SOC negative inlet port ball valve (N04) is installed on the third mounting pipeline, a fourth mounting pipeline is installed between the SOC negative inlet port (13) and the second liquid outlet pipeline, and an SOC negative outlet port ball valve (N05) is installed on the fourth mounting pipeline; a pipeline is installed between the positive liquid storage tank (4) and the negative liquid storage tank (5), and a water seal adding ball valve (W01), a water seal discharging ball valve (W02) and a water seal balance ball valve (W03) are installed on the pipeline.

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