Electrolyte storage device and air battery system

Abstract

The utility model relates to an electrolyte storage device and an air battery system, the electrolyte storage device comprises a liquid storage tank and a liquid change control pipe network, the liquid storage tank comprises at least two liquid storage areas, the liquid change control pipe network comprises a liquid inlet pipe network and a liquid outlet pipe network, the liquid inlet pipe network is communicated with each liquid storage area, and the liquid outlet pipe network is communicated with each liquid storage area; the liquid inlet pipe network is constructed to be capable of independently controlling connection and disconnection with all the liquid storage areas, the liquid outlet pipe network is communicated with all the liquid storage areas, the liquid outlet pipe network is constructed to be capable of independently controlling connection and disconnection with all the liquid storage areas, and the liquid change control pipe network is used for being communicated with an air battery. The waste electrolyte from the air battery is received through the liquid inlet pipe network, and the new electrolyte is provided for the air battery through the liquid outlet pipe network. According to the technical scheme provided by the invention, centralized management can be facilitated, the space utilization rate is high, the occupied space is relatively small, and the manufacturing and maintenance cost is low.

Description

Technical Field

[0001] The present disclosure relates to the technical field of aluminum-air batteries, and in particular, to an electrolyte storage device and an air battery system. Background Art

[0002] Aluminum-air batteries are high-energy chemical power sources and are therefore widely used to power mechanical equipment. During the discharge process, the aluminum anode is oxidized and dissolved, reacting with hydroxide ions to form tetrahydroxyaluminate ions. When the tetrahydroxyaluminate ions reach a certain concentration in the electrolyte, aluminum hydroxide is precipitated. At the same time, large amounts of tetrahydroxyaluminate ions can seriously affect the viscosity and conductivity of the electrolyte, leading to battery performance degradation. Therefore, electrolyte replacement and storage are key to ensuring the normal operation of aluminum-air batteries.

[0003] In the related art, two electrolyte storage devices are usually set up, one for storing new electrolyte and the other for storing waste electrolyte. The two storage devices are arranged separately, which is not conducive to centralized management. After the storage device storing new electrolyte discharges a part of the electrolyte, the remaining space cannot be utilized. When the storage device storing waste electrolyte is not full of waste electrolyte, a large part of the space cannot be utilized. Therefore, the two storage devices in the related art are large in size and have low space utilization. Utility Model Content

[0004] The purpose of the present disclosure is to provide an electrolyte storage device and an air battery system that can be easily managed centrally, has high space utilization, occupies relatively small space, and has low manufacturing and maintenance costs, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above objectives, the present disclosure provides, in a first aspect, an electrolyte storage device, comprising:

[0006] a liquid storage tank comprising at least two liquid storage areas; and

[0007] The liquid exchange control network includes a liquid inlet network and a liquid outlet network. The liquid inlet network is connected to each of the liquid storage areas. The liquid inlet network is configured to independently control the on-off connection with each of the liquid storage areas. The liquid outlet network is connected to each of the liquid storage areas. The liquid outlet network is configured to independently control the on-off connection with each of the liquid storage areas. The liquid exchange control network is used to be connected to the air battery to receive waste electrolyte from the air battery through the liquid inlet network and to provide new electrolyte to the air battery through the liquid outlet network.

[0008] Optionally, the at least two liquid storage areas are arranged in an array.

[0009] Optionally, among the at least two liquid storage areas, any adjacent liquid storage areas are separated by a partition.

[0010] Optionally, the liquid inlet pipe network includes a liquid inlet pipe and a plurality of liquid inlet branches connected to the liquid inlet pipe, each of the liquid inlet branches is connected to a different liquid storage area, and each of the liquid inlet branches is provided with a first control valve;

[0011] The liquid outlet pipe network includes a liquid outlet pipe and a plurality of liquid outlet branches connected to the liquid outlet pipe. Each of the liquid outlet branches is connected to a different liquid storage area. A second control valve is provided on each of the liquid outlet branches.

[0012] Optionally, a first pump body and a first master control valve are provided on the liquid inlet pipe; and a second pump body and a second master control valve are provided on the liquid outlet pipe.

[0013] Optionally, the connection interfaces of the liquid inlet pipe network and the at least two liquid storage areas are located on the same side of the liquid storage tank, and the connection interfaces of the liquid outlet pipe network and the at least two liquid storage areas are located on the same side of the liquid storage tank.

[0014] Optionally, the electrolyte storage device further includes a drainage network, which is connected to each of the liquid storage areas. The drainage network is constructed to be able to independently control the connection and disconnection with each of the liquid storage areas to discharge the waste electrolyte in the liquid storage areas.

[0015] Optionally, the drainage pipe network includes a drainage pipe and a plurality of drainage branches connected to the drainage pipe, each drainage branch is connected to a different liquid storage area, and each drainage branch is provided with a third control valve.

[0016] Optionally, a third pump body and a third master control valve are provided on the discharge pipe.

[0017] A second aspect of the present disclosure provides an air battery system, comprising:

[0018] An air battery comprising a battery stack, an intermediate liquid tank and a working liquid tank, wherein the working liquid tank pipeline is connected to the battery stack for delivering electrolyte to the battery stack and receiving electrolyte from the battery stack, and the intermediate liquid tank pipeline is connected to the working liquid tank for replenishing electrolyte to the working liquid tank; and

[0019] In the electrolyte storage device as described above, the liquid outlet pipe network is connected to the intermediate liquid tank so that the liquid storage tank can transport new electrolyte to the intermediate liquid tank, and the liquid inlet pipe network is connected to the working liquid tank so that the working liquid tank can transport waste electrolyte to the liquid storage tank.

[0020] Through the above technical solution, at least two liquid storage areas are set up in the liquid storage tank. The on-off of each liquid storage area is controlled by the liquid inlet pipe network and the liquid outlet pipe network, so that the waste electrolyte is input into the liquid storage tank and the new electrolyte is output to the air battery. This allows the liquid storage tank to replace the electrolyte of the air battery in a timely manner, facilitating centralized and integrated management of the liquid storage tank, which is more efficient and convenient. In addition, after the new electrolyte in a certain liquid storage area is discharged, the liquid storage area can be used to store the waste electrolyte instead of leaving it idle, thereby improving space utilization. In addition, after the new electrolyte in all liquid storage areas is discharged, all liquid storage areas should be filled with waste electrolyte accordingly. Therefore, the waste electrolyte of the liquid storage tank can be replaced centrally, further facilitating centralized management. In addition, based on the full utilization of space, compared with related technologies, the occupied space can be reduced, and the manufacturing and maintenance costs are reduced due to the reduction in the number of storage devices.

[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0023] Figure 1 FIG. 1 is a schematic plan view of the overall structure of an electrolyte storage device provided in an exemplary embodiment of the present disclosure.

[0024] Description of Reference Numerals

[0025] 1. Liquid storage tank; 10. Liquid storage area; 110. First liquid storage area; 120. Second liquid storage area;

[0026] 2. Liquid exchange control network; 21. Liquid inlet network; 210. Liquid inlet pipe; 211. Liquid inlet branch pipe; 22. Liquid outlet network; 220. Liquid outlet pipe; 221. Liquid outlet branch pipe;

[0027] 30. First control valve; 31. Second control valve; 32. Third control valve;

[0028] 4. Air battery; 40. Battery stack; 41. Working fluid tank; 42. Intermediate fluid tank;

[0029] 5. First pump body; 6. First master control valve; 7. Second pump body; 8. Second master control valve; 9. Drain pipe network; 90. Drain pipe; 91. Drain branch pipe; 92. Third pump body; 93. Third master control valve. DETAILED DESCRIPTION

[0030] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0031] In the present disclosure, unless otherwise specified, "inside" and "outside" refer to the inside and outside of the outline of the corresponding component. In addition, the terms "first" and "second" used in the present disclosure are to distinguish one element from another and have no order or importance. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0032] according to Figure 1 As shown, the first aspect of the present disclosure provides an electrolyte storage device for storing new electrolyte and waste electrolyte to achieve timely replacement of the electrolyte in the air battery. It should be noted that the waste electrolyte can refer to the electrolyte when the aluminum anode is oxidized and dissolved and reacts with hydroxide ions to generate tetrahydroxyaluminate ions that reach a certain concentration during the discharge process of the aluminum-air battery. The certain concentration can take any appropriate value according to the degree of performance degradation of the battery. Alternatively, the waste electrolyte can also be the electrolyte that has reached its service life; the new electrolyte can refer to the electrolyte that has not participated in the discharge process of the aluminum-air battery, or it can be the electrolyte that has not reached its service life. The present disclosure is not limited to this. The electrolyte storage device may include a liquid storage tank 1 and a liquid exchange control network 2. The liquid storage tank 1 may include at least two liquid storage areas 10. The liquid exchange control network 2 may include a liquid inlet network 21 and a liquid outlet network 22. The liquid inlet network 21 is connected to each liquid storage area 10. The liquid inlet network 21 is constructed to be able to independently control the on and off with each liquid storage area 10. The liquid outlet network 22 is connected to each liquid storage area 10. The liquid outlet network 22 is constructed to be able to independently control the on and off with each liquid storage area 10. The liquid exchange control network 2 is used to be connected to the aluminum-air battery to receive waste electrolyte from the aluminum-air battery through the liquid inlet network 21 and to provide new electrolyte to the aluminum-air battery through the liquid outlet network 22.

[0033] Through the above technical solution, at least two liquid storage areas 10 are set in the liquid storage tank 1. The on-off control of each liquid storage area 10 is achieved through the liquid inlet pipe network 21 and the liquid outlet pipe network 22, so that the waste electrolyte is input into the liquid storage tank 1 and the new electrolyte is output to the aluminum-air battery. This allows the liquid storage tank 1 to replace the electrolyte of the aluminum-air battery in a timely manner, facilitating the centralized and integrated management of the electrolyte in the liquid storage tank 1, which is more convenient. In addition, after the new electrolyte in a certain liquid storage area 10 is discharged, the liquid storage area 10 can be used to store the waste electrolyte instead of leaving it idle, thereby improving space utilization. In addition, after the new electrolyte in all liquid storage areas 10 is discharged, all liquid storage areas 10 should be filled with waste electrolyte at this time. Therefore, the waste electrolyte in the liquid storage tank 1 can be centrally replaced, facilitating further centralized management. In addition, based on the full utilization of space, compared with related technologies, the occupied space can be reduced, and the manufacturing and maintenance costs are reduced due to the reduction in the number of storage devices.

[0034] Among them, the amount of new electrolyte that each storage area 10 can store can be the same as the amount of new electrolyte required for each electrolyte replacement of the aluminum-air battery. Therefore, all the new electrolyte in the storage area 10 can be emptied at one time, thereby accommodating waste electrolyte.

[0035] It can be understood that after any storage area 10 delivers new electrolyte to the aluminum-air battery, the emptied storage area 10 can be used to receive the waste electrolyte discharged from the aluminum-air battery, or the operator can input new electrolyte to the aluminum-air battery in advance. In this way, one of the storage areas 10 can be constructed as a vacant area so that the waste electrolyte after the aluminum-air battery reaction and discharge can be delivered to the vacant area. For example, the liquid storage tank 1 may include multiple first liquid storage areas 110 and at least one second liquid storage area 120, wherein the first liquid storage area 110 is pre-filled with new electrolyte, and the second liquid storage area 120 is constructed as a vacant area, so that the waste electrolyte after the aluminum-air battery reaction and discharge is transported to the second liquid storage area 120, and then replenished by the new electrolyte from the first liquid storage area 110. After the aluminum-air battery receives the new electrolyte from the first liquid storage area 110, it will transport the generated waste electrolyte to the first liquid storage area 110 after reaching its service life, and this cycle will be repeated until all liquid storage areas 10 are filled with waste electrolyte, and the operator will then centrally process the waste electrolyte and refill it with new electrolyte.

[0036] In some embodiments, for example, referring to Figure 1As shown, at least two liquid storage areas 10 can be arranged in an array. For example, multiple liquid storage areas 10 can be arranged side by side in the horizontal direction to facilitate operators to observe and manage the electrolyte conditions in the liquid storage tank 1; multiple liquid storage areas 10 can also be arranged up and down in the vertical direction. Alternatively, multiple rows can be arranged from bottom to top in the vertical direction, each row including multiple liquid storage areas arranged in the horizontal direction, or multiple rows can be arranged side by side in the horizontal direction, each row including multiple liquid storage areas, or the above arrangements can be superimposed. This disclosure does not make specific limitations on this, and those skilled in the art can make adaptive adjustments according to the needs of actual conditions.

[0037] Optionally, any adjacent liquid storage areas 10 may be separated by partitions to prevent waste electrolyte from contaminating new electrolyte, thereby improving the reliability and safety of the liquid storage tank 1 .

[0038] The shape of the liquid storage area 10 can be cubic, cylindrical or any other suitable form. The shapes of the various liquid storage areas 10 can be the same or different, and this disclosure does not make any specific limitation on this.

[0039] In some embodiments, for example, referring to Figure 1 As shown, the liquid inlet pipe network 21 may include a liquid inlet pipe 210 and multiple liquid inlet branches 211 connected to the liquid inlet pipe 210, each liquid inlet branch 211 being connected to a different liquid storage area 10, and each liquid inlet branch 211 being provided with a first control valve 30; the liquid outlet pipe network 22 may include a liquid outlet pipe 220 and multiple liquid outlet branches 221 connected to the liquid outlet pipe 220, each liquid outlet branch 221 being connected to a different liquid storage area 10, and each liquid outlet branch 221 being provided with a second control valve 31. By providing the first control valve 30 on each liquid inlet branch 211 and the second control valve 31 on each liquid outlet branch 221, it is possible to achieve independent control of any of the liquid storage areas 10, effectively improving the operability of the storage device disclosed herein, and enabling timely maintenance when any branch or liquid storage area 10 fails without affecting the continued operation of other liquid storage areas 10, thereby improving safety and reliability.

[0040] In some embodiments, for example, referring to Figure 1 As shown, the liquid inlet pipe 210 can be equipped with a first pump body 5 and a first master control valve 6; the liquid outlet pipe 220 can be equipped with a second pump body 7 and a second master control valve 8. The first pump body 5 is used to extract waste electrolyte from the aluminum-air battery, while the second pump body 7 is used to extract new electrolyte from each storage area. The first master control valve 6 is used to control the opening and closing of the liquid inlet pipe 210 to further control whether the waste electrolyte can flow into the liquid storage tank 1; the second master control valve 8 is used to control the opening and closing of the liquid outlet pipe 220 to further control whether the new electrolyte can flow into the aluminum-air battery. This further improves safety and reliability.

[0041] In some embodiments, for example, referring to Figure 1 As shown, the connection interfaces of the liquid inlet pipe network 21 and the at least two liquid storage areas 10 can be located on the same side of the liquid storage tank 1, and the connection interfaces of the liquid outlet pipe network 22 and the at least two liquid storage areas 10 can be located on the same side of the liquid storage tank 1. Through the above arrangement, the layout of the liquid inlet pipe network 21 and the liquid outlet pipe network 22 can be made more organized, thereby preventing them from crossing or entangled, and improving safety.

[0042] In some embodiments, for example, referring to Figure 1 As shown, the electrolyte storage device may further include a drainage network 9, which is connected to each liquid storage area 10. The drainage network 9 is configured to be independently controllable to each liquid storage area 10 for draining the waste electrolyte in the liquid storage area 10. In this way, the waste electrolyte input from the aluminum-air battery into the liquid storage tank 1 can be centrally discharged to improve drainage efficiency.

[0043] Optionally, the drainage pipe network 9 may include a drainage pipe 90 and a plurality of drainage branches 91 connected to the drainage pipe 90, each drainage branch 91 being connected to a different liquid storage area 10, and each drainage branch 91 being provided with a third control valve 32. By providing a third control valve 32 on each drainage branch 91, it is convenient to individually control each drainage branch 91, so that when the waste electrolyte is discharged, the flow rate of the waste electrolyte can be controlled. It is also possible to close the third control valve 32 connected to the failed drainage branch 91 when any drainage branch 91 fails, facilitating inspection and maintenance without affecting the continued operation of other drainage branches 91, and being more operable and convenient.

[0044] Optionally, a third pump body 92 and a third master control valve 93 may be provided on the drainage pipe 90. The third pump body 92 is used to extract the spent electrolyte in each liquid storage area 10; the third master control valve 93 is used to control the on-off state of the drainage pipe 90, thereby facilitating centralized management of each drainage branch pipe 91 and further improving safety and reliability.

[0045] According to a second aspect of the present disclosure, an air battery system is provided, comprising an air battery 4 and an electrolyte storage device, the electrolyte storage device having all the beneficial effects of the above-mentioned specific embodiments, which will not be repeated herein; wherein, the air battery 4 may include a battery stack 40, an intermediate liquid tank 42, and a working liquid tank 41, wherein the working liquid tank 41 is connected to the battery stack 40 by a pipeline for delivering electrolyte to the battery stack 40 and receiving electrolyte from the battery stack 40, and the intermediate liquid tank 42 is connected to the working liquid tank 41 by a pipeline for replenishing electrolyte to the working liquid tank 41; the liquid outlet pipe network 22 is connected to the intermediate liquid tank 42 so that the liquid storage tank 1 can deliver new electrolyte to the intermediate liquid tank 42, and the liquid inlet pipe network 21 is connected to the working liquid tank 41 so that the working liquid tank 41 can deliver spent electrolyte to the liquid storage tank 1. The air battery 4 may be an aluminum-air battery, a lithium-air battery, a zinc-air battery, or the like. The working fluid tank 41 and the battery stack 40 form a cycle for the normal operation of the air battery. The operating principle of the air battery is conventional technology and will not be described in detail in this disclosure.

[0046] The present disclosure exemplarily describes the working process of the electrolyte storage device: for example, the number of liquid storage areas 10 of the liquid storage tank 1 can be ten, of which nine liquid storage areas 10 are used to pre-store new electrolyte, and the remaining liquid storage area 10 is an empty area. The operator pre-fills the working liquid tank 41 with new electrolyte. When the aluminum-air battery starts working, the new electrolyte in the working liquid tank 41 is transported to the battery stack 40 to form a cycle. After the electrolyte reaches its service life, it can be determined to be waste electrolyte. Therefore, the first main control valve 6 and the first control valve 30 connected to the empty area can be opened, and the first pump body 5 can be started. The waste electrolyte flows into the empty area via the liquid inlet pipe 210 and the liquid inlet branch pipe 211 connected to the empty area in turn. After the waste electrolyte is transported to the storage area 10, the second master control valve 8 and the second control valve 31 of any of the nine storage areas 10 are opened, and the second pump body 7 is started to transport the new electrolyte in the storage area 10 to the intermediate liquid tank 42 of the aluminum-air battery, and then transport it to the working liquid tank 41 from the intermediate liquid tank 42 to realize the replacement of the electrolyte. The above steps are repeated until the ten storage areas 10 are filled with waste electrolyte, the third master control valve 93 and the third control valve 32 of the drainage branch pipe 91 connected to each storage area 10 are opened, and the third pump body 92 is started to transport the waste electrolyte in the storage tank 1 to the collection box, and then the waste electrolyte in the collection box is centrally processed. Alternatively, new electrolyte is stored in advance in the ten liquid storage areas 10. When the aluminum-air battery starts working, the new electrolyte in any liquid storage area 10 is extracted to the intermediate liquid tank 42 through the second pump body 7. This method can also achieve the replacement of the air battery electrolyte. Furthermore, the operator can fill the working liquid tank 41 and the intermediate liquid tank 42 with new electrolyte in advance. When the aluminum-air battery starts working, the new electrolyte in the working liquid tank 41 is transported to the battery stack 40 to form a cycle. After the electrolyte reaches its service life, it can be determined as waste electrolyte. Therefore, the first main control valve 6 and the first control valve 30 connected to the vacant area can be opened, and the first pump body 5 can be started. The waste electrolyte is sequentially discharged through the liquid inlet pipe 210 and the liquid inlet branch pipe 211 connected to the vacant area. Flowing into the vacant liquid storage area 10, after the waste electrolyte is transported, the new electrolyte pre-stored in the intermediate liquid tank 42 is transported to the working liquid tank 41 to ensure the continuous operation of the aluminum-air battery. At this time, the second master control valve 8 and the second control valve 31 of any of the nine liquid storage areas 10 are opened, and the second pump body 7 is started to transport the new electrolyte in the liquid storage area 10 to the intermediate liquid tank 42 of the aluminum-air battery, which can also achieve the replacement of new and waste electrolytes in the aluminum-air battery. As to whether it is necessary to pre-store new electrolyte in the working liquid tank 41 and the intermediate liquid tank 42, those skilled in the art can adjust it according to the actual needs, and this disclosure does not make specific restrictions on this.

[0047] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0049] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An electrolyte storage device, characterized in that: include: a liquid storage tank, the liquid storage tank comprising at least two liquid storage areas; and The liquid exchange control network includes a liquid inlet network and a liquid outlet network. The liquid inlet network is connected to each of the liquid storage areas. The liquid inlet network is configured to independently control the on-off connection with each of the liquid storage areas. The liquid outlet network is connected to each of the liquid storage areas. The liquid outlet network is configured to independently control the on-off connection with each of the liquid storage areas. The liquid exchange control network is used to be connected to the air battery to receive waste electrolyte from the air battery through the liquid inlet network and to provide new electrolyte to the air battery through the liquid outlet network.

2. The electrolyte storage device according to claim 1, characterized in that The at least two liquid storage areas are arranged in an array.

3. The electrolyte storage device according to claim 1, characterized in that Among the at least two liquid storage areas, any adjacent liquid storage areas are separated by a partition.

4. The electrolyte storage device according to claim 1, characterized in that The liquid inlet pipe network includes a liquid inlet pipe and a plurality of liquid inlet branches connected to the liquid inlet pipe, each of the liquid inlet branches is connected to a different liquid storage area, and each of the liquid inlet branches is provided with a first control valve; The liquid outlet pipe network includes a liquid outlet pipe and a plurality of liquid outlet branches connected to the liquid outlet pipe. Each of the liquid outlet branches is connected to a different liquid storage area. A second control valve is provided on each of the liquid outlet branches.

5. The electrolyte storage device according to claim 4, characterized in that The liquid inlet pipe is provided with a first pump body and a first master control valve; the liquid outlet pipe is provided with a second pump body and a second master control valve.

6. The electrolyte storage device according to claim 1, characterized in that The connection interfaces of the liquid inlet pipe network and the at least two liquid storage areas are located on the same side of the liquid storage tank, and the connection interfaces of the liquid outlet pipe network and the at least two liquid storage areas are located on the same side of the liquid storage tank.

7. The electrolyte storage device according to claim 1, characterized in that The electrolyte storage device further includes a drainage pipe network, which is connected to each of the liquid storage areas. The drainage pipe network is configured to independently control the connection and disconnection with each of the liquid storage areas so as to discharge the waste electrolyte in the liquid storage areas.

8. The electrolyte storage device according to claim 7, characterized in that The drainage pipe network includes a drainage pipe and a plurality of drainage branches connected to the drainage pipe. Each drainage branch is connected to a different liquid storage area. A third control valve is provided on each drainage branch.

9. The electrolyte storage device according to claim 8, characterized in that The liquid discharge pipe is provided with a third pump body and a third master control valve.

10. An air battery system, characterized in that: include: An air battery comprising a cell stack, an intermediate liquid tank, and a working liquid tank, wherein the working liquid tank pipeline is connected to the cell stack for delivering electrolyte to the cell stack and receiving electrolyte from the cell stack, and the intermediate liquid tank pipeline is connected to the working liquid tank for replenishing electrolyte to the working liquid tank; and The electrolyte storage device according to any one of claims 1 to 9, wherein the liquid outlet pipe network is connected to the intermediate liquid tank so that the liquid storage tank can transport new electrolyte to the intermediate liquid tank, and the liquid inlet pipe network is connected to the working liquid tank so that the working liquid tank can transport waste electrolyte to the liquid storage tank.

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