Gas circulation system and battery storage facility

Abstract

This disclosure relates to a gas circulation system and a battery storage system, including a first gas transport assembly, a second gas transport assembly, and a gas suction assembly. Working gas can be supplied to the first and second gas storage tanks via the gas suction assembly, creating a pressure difference between the first and second gas storage tanks. Opening the first gas transport assembly transports the working gas from the first gas storage tank to the storage chamber. Closing the first gas transport assembly and opening the second gas transport assembly continues to transport the working gas from the second gas storage tank to the storage chamber until the pressure in the storage chamber reaches a threshold. After pressure holding is complete, the first gas transport assembly is opened first, allowing the working gas in the storage chamber to return to the first gas storage tank. Once the pressure in the storage chamber has dropped to a set value, the exhaust valve can be opened to empty the storage chamber. Since a portion of the working gas in the storage chamber can be recovered from the first gas storage tank and reused, production costs can be effectively reduced.

Description

Technical Field

[0001] This disclosure claims the priority of the Chinese patent application No. 202322663119.4, "Gas Circulation Device and Battery Standing Equipment", filed with the China National Intellectual Property Administration on September 28, 2023, the entire content of which is incorporated herein by reference.

[0002] This disclosure relates to the technical field of lithium battery equipment, and particularly to gas circulation devices and battery standing equipment.

Background Art

[0003] After the battery is filled with liquid, since the electrolyte cannot immediately penetrate into the cells of the battery, it is necessary to place the battery in a standing chamber for standing. In the standing process, usually, first, the standing chamber is evacuated to remove the air remaining in the cell intermediate layer, and then nitrogen is filled to form a positive pressure in the standing chamber. Therefore, under the action of pressure, the electrolyte can penetrate into the cells of the battery.

[0004] Currently, usually, until the pressure in the standing chamber reaches the threshold value, nitrogen is directly filled from the gas source into the standing chamber, the pressure is maintained in the standing chamber for a certain period of time, and then the exhaust valve is opened to discharge the nitrogen, and the inside of the standing chamber is returned to normal pressure. As a result, nitrogen is wasted, and the battery production cost increases.

Summary of the Invention

[0005] Therefore, in order to solve the above problems, it is necessary to provide a gas circulation device and a battery standing equipment that can reduce production costs.

[0006] A gas circulation device comprising a first gas transport assembly, a second gas transport assembly, and a gas suction assembly, wherein the first gas transport assembly includes a first gas storage tank, the second gas transport assembly includes a second gas storage tank, the gas suction assembly is used to connect the first gas storage tank and the second gas storage tank to a gas source, the gas suction assembly includes a pressure regulating structure, and by adjusting the pressure regulating structure, the gas pressure in the first gas storage tank becomes lower than the gas pressure in the second gas storage tank. The first and second gas transport assemblies are in communication with the stationary chamber and are used to transport the working gas to the stationary chamber until the pressure in the stationary chamber reaches a threshold. When the pressure in the stationary chamber is released, the first gas transport assembly opens, and the working gas in the stationary chamber returns to the first gas storage tank.

[0007] In one embodiment, a plurality of the first gas transport assemblies are provided, and by adjusting the pressure adjustment structure, the gas pressure in the first gas storage tank of the plurality of the first gas transport assemblies is sequentially increased or decreased.

[0008] In one embodiment, the first gas transport assembly further includes a first pipeline and a first gas joint communicating with the first gas storage tank via the first pipeline, and the second gas transport assembly further includes a second pipeline and a second gas joint communicating with the second gas storage tank via the second pipeline.

[0009] In one embodiment, a plurality of first gas joints are provided in the first pipeline, and a plurality of second gas joints are provided in the second pipeline.

[0010] In one embodiment, the first pipeline includes a plurality of parallel first branches, each of which is provided with a plurality of first gas joints at intervals, and the second pipeline includes a plurality of parallel second branches, each of which is provided with a plurality of second gas joints at intervals.

[0011] In one embodiment, the first gas joint and the second gas joint are provided as quick joints.

[0012] In one embodiment, the first gas transport assembly further includes a first filter provided between the first gas storage tank and the first gas joint, and the second gas transport assembly further includes a second filter provided between the second gas storage tank and the second gas joint.

[0013] In one embodiment, a quick-plug type flange is provided at the gas intake end of the gas intake assembly, and the gas intake end is connected to a gas source via the quick-plug type flange.

[0014] In one embodiment, the gas intake assembly includes a first gas intake pipe communicating with the first gas storage tank and a second gas intake pipe communicating with the second gas storage tank, and the pressure adjustment structure is a relief valve provided in the first gas intake pipe.

[0015] In one embodiment, the gas intake assembly includes a first gas intake pipe communicating with the first gas storage tank and a second gas intake pipe communicating with the second gas storage tank, and the pressure adjustment structure is a booster valve provided in the second gas intake pipe.

[0016] A battery storage device, A gas circulation device according to any one of the above preferred embodiments, It includes a stationary chamber that communicates with both the first gas transport assembly and the second gas transport assembly.

[0017] In the above gas circulation system and battery storage facility, the working gas in the gas source can be filled into the first and second gas storage tanks via a gas intake assembly, creating a pressure difference between the first and second gas storage tanks. When the first gas transport assembly is opened, the working gas in the first gas storage tank is transported to the storage chamber. When the first gas transport assembly is closed and the second gas transport assembly is opened, the working gas in the second gas storage tank is continuously transported to the storage chamber until the pressure in the storage chamber reaches a threshold. After pressure holding is complete, the first gas transport assembly is opened first, the working gas in the storage chamber returns to the first gas storage tank, and once the pressure in the storage chamber drops to a set value, the exhaust valve can be opened to empty the storage chamber. Since a portion of the working gas in the storage chamber can be recovered from the first gas storage tank and reused, it can be seen that production costs can be effectively reduced.

[0018] To more clearly illustrate the embodiments of this application or the technical solutions of the prior art, the following briefly introduces the drawings necessary for describing the embodiments or the prior art. Clearly, the drawings in the following description are only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these without any creative effort. [Brief explanation of the drawing]

[0019] [Figure 1] This is a front view of a gas circulation device according to a preferred embodiment of the present invention. [Figure 2] Figure 1 is a top view of the gas circulation system. [Figure 3] Figure 1 is a left side view of the gas circulation system shown. [Figure 4] This is a schematic diagram of a battery storage facility according to another embodiment of the present invention. [Modes for carrying out the invention]

[0020] To further clarify the above-mentioned objectives, features, and advantages of the present invention, specific embodiments of the invention will be described in detail below with reference to the drawings. Many specific details will be provided in the following description to give a complete understanding of the invention. However, the present invention can be carried out in many ways other than those described herein, and those skilled in the art can make similar improvements without departing from the implications of the invention; therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] In describing the present invention, orientations or positional relationships indicated by terms such as "center," "lateral," "vertical," "width," "length," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "diametrical," and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are used solely to describe the invention and to simplify the description, and do not indicate or imply that the devices or elements mentioned have a particular orientation or must be constructed and operate in a particular direction, and therefore should not be construed as limitations to the invention.

[0022] Furthermore, the terms “first” and “second” are used solely for descriptive purposes and should not be interpreted as indicating or suggesting relative importance or the quantity of technical features. Accordingly, features separated by “first” and “second” may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise specified, “multiple” means two or more, for example, two, three.

[0023] In the present invention, unless otherwise specified, the terms "attachment", "connection", "connection", and "fixation" need to be understood in a broad sense. For example, they can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection or an electrical connection, a direct connection or an indirect connection via an intermediate medium, a communication inside two elements, or an interaction relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

[0024] In the present invention, unless otherwise specified, the first feature being "above" or "below" the second feature means that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact via an intermediate medium. Also, the first feature being "above", "above", and "upper side" of the second feature means that the first feature is directly above or obliquely above the second feature, or the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "lower side" of the second feature means that the first feature is directly below or obliquely below the second feature, or the horizontal height of the first feature is lower than that of the second feature.

[0025] It should be noted that when an element is considered to be "fixed to" or "provided on" another element, it may be directly fixed and provided on the other element, or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element, or an intermediate element may also exist at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar terms used in this specification are for the purpose of explanation only and do not represent the only embodiment.

[0026] Referring to FIGS. 1 and 4, the present invention provides a gas circulation device 100 and a battery standing device 10. The battery standing device 10 includes a standing chamber 200 and a gas circulation device 100.

[0027] Since a containment space is formed inside the stationary chamber 200, positive pressure can be formed after the working gas is filled. After liquid injection, the battery can be placed inside the stationary chamber 200 for pressure holding, and as a result, the electrolyte can completely penetrate the cells. Typically, the stationary chamber 200 is provided with multiple intake valves, which allow the working gas to be filled into the stationary chamber 200. The working gas is usually nitrogen, but other inert gases that are less likely to cause oxidation reactions can also be used. In addition, the stationary chamber 200 is usually further provided with an exhaust assembly, and the exhaust assembly is provided with an exhaust valve 210, and when the exhaust valve 210 is opened, the working gas inside the stationary chamber 200 can be completely discharged.

[0028] Referring together to Figures 2 and 3, a gas circulation device 100 according to a preferred embodiment of the present invention includes a first gas transport assembly 110, a second gas transport assembly 120, and a gas suction assembly 130.

[0029] Both the first gas transport assembly 110 and the second gas transport assembly 120 communicate with the stationary chamber 200. Specifically, the first gas transport assembly 110 and the second gas transport assembly 120 can communicate with the stationary chamber 200 via intake valves provided in the stationary chamber, and the opening and closing of the first gas transport assembly 110 and the second gas transport assembly 120 can be controlled by the intake valves. Clearly, in another embodiment, control valves may be provided in the first gas transport assembly 110 and the second gas transport assembly 120, respectively, to achieve opening and closing control.

[0030] The first gas transport assembly 110 includes a first gas storage tank 111, and the second gas transport assembly 120 includes a second gas storage tank 121. When the first gas transport assembly 110 and the second gas transport assembly 120 are opened, the working gas stored in the first gas storage tank 111 and the second gas storage tank 121 can fill the stationary chamber 200, thus creating positive pressure within the stationary chamber 200. The structure of the first gas storage tank 111 and the second gas storage tank 121 may be the same, and they are usually cylindrical and made of metal, with strong pressure resistance. To protect the first gas storage tank 111 and the second gas storage tank 121 and to prevent them from exploding due to external impact, the gas circulation device 100 is usually provided with a cover (not shown) that covers the outer circumference of the first gas storage tank 111 and the second gas storage tank 121, and the cover is usually formed by welding a metal material.

[0031] Specifically, in this embodiment, the first gas transport assembly 110 further includes a first pipeline 112 and a first gas joint 113 that communicates with a first gas storage tank 111 via the first pipeline 112, and the second gas transport assembly 120 further includes a second pipeline 122 and a second gas joint 123 that communicates with a second gas storage tank 121 via the second pipeline 122.

[0032] The first gas joint 113 and the second gas joint 123 facilitate the connection between the first gas transport assembly 110 and the second gas transport assembly 120 and the intake valve in the stationary chamber 200, and ensure the reliability of the connection. Both the first conduit 112 and the second conduit 122 may be flexible tubing or rigid metal-formed tubing and may be arranged according to the distribution of the stationary chamber 200 to facilitate the layout of the battery stationary equipment.

[0033] To facilitate the disassembly and assembly of the first gas transport assembly 110 and the second gas transport assembly 120, specifically in this embodiment, the first gas joint 113 and the second gas joint 123 are provided as quick joints. Obviously, without considering disassembly, the output ends of the first gas transport assembly 110 and the second gas transport assembly 120 can also be welded directly to the stationary chamber 200.

[0034] In this embodiment, multiple first gas joints 113 are provided in the first pipeline 112, and multiple second gas joints 123 are provided in the second pipeline 122.

[0035] Similarly, multiple standing chambers 200 may be provided, and each of the standing chambers 200 can communicate with the first gas transport assembly 110 and the second gas transport assembly 120 via multiple first gas joints 113 and second gas joints 123, so that multiple standing chambers 200 can simultaneously form a positive pressure. Thus, the battery standing equipment can enable the standing of more batteries at once, thus contributing to improved production efficiency.

[0036] Furthermore, in this embodiment, the first pipeline 112 includes a plurality of parallel first branches (not shown), with a plurality of first gas joints 113 spaced apart at each first branch, and the second pipeline 122 includes a plurality of parallel second branches (not shown), with a plurality of second gas joints 123 spaced apart at each second branch.

[0037] Specifically, the second branch and the first branch are also parallel to each other, and the parallel first and second branches reduce intersections and effectively avoid mutual interference. Each second branch is provided close to one first branch, and multiple stationary chambers 200 are provided below each first branch, with each of the stationary chambers 200 communicating with the multiple first gas joints 113 in the first branch and the multiple second gas joints 123 in the second branch. Since the multiple stationary chambers 200 are also arranged in multiple parallel rows, the layout of the battery stationary equipment can be made simpler.

[0038] The gas suction assembly 130 is used to connect the first gas storage tank 111 and the second gas storage tank 121 to a gas source, respectively. The working gas stored or produced in the gas source can be injected into the first gas storage tank 111 and the second gas storage tank 121 through the gas suction assembly 130 for temporary storage. The gas source may be a gas tank that stores working gas or equipment that produces working gas. Specifically, in this embodiment, a quick-plug type flange (not shown) is provided at the gas suction end of the gas suction assembly 130, and this gas suction end is connected to the gas source via the quick-plug type flange. The output end of the gas source is provided with a flange that fits the quick-plug type flange, allowing the gas suction assembly 130 and the gas source to be quickly disassembled and assembled, thus contributing to improved work efficiency.

[0039] The gas intake assembly 130 includes a pressure adjustment structure 131, and by adjusting the pressure adjustment structure 131, the gas pressure in the first gas storage tank 111 becomes lower than the gas pressure in the second gas storage tank 121.

[0040] Specifically, in this embodiment, the gas intake assembly 130 includes a first gas intake pipe (not shown) communicating with a first gas storage tank 111 and a second gas intake pipe (not shown) communicating with a second gas storage tank 121, and the pressure adjustment structure 131 is a relief valve provided in the first gas intake pipe. The gas intake assembly 130 fills the first gas storage tank 111 and the second gas storage tank 121 with gas via the first gas intake pipe and the second gas intake pipe, respectively, and the relief valve provided in the first gas intake pipe can reduce the pressure of the gas flowing into the first gas storage tank 111, resulting in the gas pressure in the first gas storage tank 111 being lower than the gas pressure in the second gas storage tank 121.

[0041] It should be noted that in another embodiment, the pressure adjustment structure 131 may also be a booster valve provided in the second gas intake pipe. The booster valve provided in the second gas intake pipe can increase the pressure of the gas flowing into the second gas storage tank 121, so that the gas pressure in the second gas storage tank 121 becomes higher than the gas pressure in the first gas storage tank 111. Alternatively, the pressure adjustment structure 131 may include a booster valve provided in the second gas intake pipe and a relief valve provided in the first gas intake pipe.

[0042] In this embodiment, only one first gas transport assembly 110 is provided. When it is necessary to create positive pressure in the stationary chamber 200, the first gas transport assembly 110 and the second gas transport assembly 120 are kept closed, and the working gas in the gas source is first filled into the first gas storage tank 111 and the second gas storage tank 121 via the gas suction assembly 130, and a pressure difference is created between the first gas storage tank 111 and the second gas storage tank 121 by adjusting the pressure adjustment structure 131. Next, when the first gas transport assembly 110 is opened, the working gas in the first gas storage tank 111 is transported to the stationary chamber 200 due to the action of the pressure difference until the pressure between the two reaches equilibrium or the pressure difference falls below a set value, and then the first gas transport assembly 110 is closed. When the second gas transport assembly 120 is opened, the working gas in the second gas storage tank 121 is transported to the stationary chamber 200 due to the action of the pressure difference until the pressure in the stationary chamber 200 reaches a threshold, and then the second gas transport assembly 120 is closed. It should be noted that when the pressure in the stationary chamber 200 reaches a threshold, the pressure in the second gas storage tank 121 becomes higher than the pressure in the stationary chamber 200.

[0043] After maintaining pressure in the stationary chamber 200 for a certain period, it is necessary to release the pressure. First, the first gas transport assembly 110 is opened. In this case, the pressure in the stationary chamber 200 becomes higher than the pressure in the first gas storage tank 111. Therefore, the working gas in the stationary chamber 200 returns to the first gas storage tank 111 due to the pressure difference until the pressures between the two reach equilibrium or the pressure in the stationary chamber 200 reaches a set value. It can be seen that a portion of the working gas in the stationary chamber 200 can be recovered by the first gas storage tank 111. Finally, by closing the first gas transport assembly 110 and opening the exhaust valve 210 of the stationary chamber 200, the remaining working gas in the stationary chamber 200 can be completely discharged.

[0044] When the next batch of batteries is being allowed to settle, the above process is repeated, and the working gas recovered from the first gas storage tank 111 can be injected back into the settling chamber 200 for reuse. The gas circulation device 100 enables the recovery and reuse of working gas, thus reducing waste of working gas.

[0045] In this embodiment, the first gas transport assembly 110 further includes a first filter 114 between the first gas storage tank 111 and the first gas joint 113, and the second gas transport assembly 120 further includes a second filter 124 provided between the second gas storage tank 121 and the second gas joint 123.

[0046] The first filter 114 and the second filter 124 can filter the working gas flowing through them. Both the first filter 114 and the second filter 124 can filter the working gas flowing into the stationary chamber 200, thereby maintaining a clean environment inside the stationary chamber 200. Furthermore, the first filter 114 can filter the working gas returning from the stationary chamber 200 to the first gas storage tank 111, thereby preventing contamination of the first gas storage tank 111 and the working gas temporarily stored therein.

[0047] Referring to Figure 4, in another embodiment, multiple first gas transport assemblies 110 are provided, and by adjusting the pressure adjustment structure 131, the gas pressure in the first gas storage tank 111 of the multiple first gas transport assemblies 110 is sequentially increased or decreased. Each of the multiple first gas transport assemblies 110 can communicate with the stationary chamber 200, and the structure of the first gas transport assembly 110 in this embodiment may be exactly the same as that of the first gas transport assembly 110 in the previous embodiment.

[0048] If it is necessary to create positive pressure in the stationary chamber 200, the second gas transport assembly 120 and the first gas transport assembly 110 are kept closed, and the working gas in the gas source is first filled into the second gas storage tank 121 and the multiple first gas storage tanks 111 via the gas suction assembly 130. By adjusting the pressure adjustment structure 131, a pressure difference is created between the first gas storage tank 111 and the second gas storage tank 121, and also between the multiple first gas storage tanks 111. Next, when the first gas transport assembly 110 with the lowest gas pressure in the first gas storage tank 111 is opened, the working gas in the first gas storage tank 111 is transported to the stationary chamber 200 until the pressure between the two reaches equilibrium or the pressure difference falls below a set value due to the action of the pressure difference. Then, when the first gas transport assembly 110 with the second lowest gas pressure in the first gas storage tank 111 is opened, the working gas in the first gas storage tank 111 is transported to the stationary chamber 200 until the pressure between the two reaches equilibrium or the pressure difference falls below a set value due to the action of the pressure difference. Finally, the first gas transport assembly 110 with the highest gas pressure in the first gas storage tank 111 is opened, and the process continues until the pressure between the first gas storage tank 111 and the stationary chamber 200 reaches equilibrium or the pressure difference falls below a set value.

[0049] When all first gas transport assemblies 110 are closed and the second gas transport assembly 120 is opened, the working gas in the second gas storage tank 121 is transported to the stationary chamber 200 due to the pressure difference until the pressure in the stationary chamber 200 reaches a threshold, and then the second gas transport assembly 120 is closed. In this case, the pressure in the stationary chamber 200 becomes higher than the pressure in all of the first gas storage tanks 11.

[0050] After maintaining pressure in the stationary chamber 200 for a certain period of time, it is necessary to release the pressure. First, the first gas transport assembly 110, which has the highest gas pressure in the first gas storage tank 111, is opened. In this case, the pressure in the stationary chamber 200 becomes higher than the pressure in the first gas storage tank 111. Therefore, the working gas in the stationary chamber 200 returns to the first gas storage tank 111 due to the pressure difference, until the pressures between the two reach equilibrium or the pressure difference falls below a set value. Next, the first gas transport assembly 110, which has the second highest gas pressure in the first gas storage tank 111, is opened, and because the pressure in the stationary chamber 200 is still higher than the pressure in the first gas storage tank 111, the working gas in the stationary chamber 200 returns to the first gas storage tank 111 due to the pressure difference until the pressures between the two reach equilibrium again or the pressure difference falls below a set value. Then, the first gas transport assembly 110, which has the lowest gas pressure in the first gas storage tank 111, is opened, and this process continues until the pressures in the first gas storage tank 111 and the stationary chamber 200 reach equilibrium or the pressure in the stationary chamber 200 reaches a set value.

[0051] It can be seen that some of the working gas in the stationary chamber 200 can be recovered by the multiple first gas storage tanks 111. Finally, by closing the first gas transport assembly 110 and opening the exhaust valve 210 of the stationary chamber 200, the remaining working gas in the stationary chamber 200 can be completely discharged.

[0052] When the next batch of batteries is to be allowed to settle, the above process is repeated, so that the working gas recovered from the first gas storage tank 111 can be injected back into the settling chamber 200 for reuse. Furthermore, since the working gas in the settling chamber 200 is recovered in multiple stages via multiple first gas transport assemblies 110, the amount of working gas remaining in the settling chamber 200 is very small each time, and as a result, the gas circulation device 100 can further reduce the waste of working gas.

[0053] In the gas circulation device 100 and battery storage facility described above, the working gas in the gas source can be filled into the first gas storage tank 111 and the second gas storage tank 121 via the gas suction assembly 130, creating a pressure difference between the first gas storage tank 111 and the second gas storage tank 121. When the first gas transport assembly 110 is opened, the working gas in the first gas storage tank 111 is transported to the storage chamber 200. When the first gas transport assembly 110 is closed and the second gas transport assembly 120 is opened, the working gas in the second gas storage tank 121 continues to be transported to the storage chamber 200 until the pressure in the storage chamber 200 reaches a threshold. After the pressure holding is complete, first the first gas transport assembly 110 is opened, and the working gas in the storage chamber 200 returns to the first gas storage tank 111. When the pressure in the storage chamber 200 drops to a set value, the exhaust valve can be opened to empty the storage chamber 200. Since a portion of the working gas in the stationary chamber 200 can be recovered from the first gas storage tank 111 and reused, it can be seen that production costs can be effectively reduced.

[0054] The technical features of the embodiments described above can be combined in any way, and for the sake of brevity, not all possible combinations of the technical features in the embodiments described above will be explained; however, as long as such combinations of technical features are inconsistent, they should be considered to be within the scope of protection of this specification.

[0055] The aforementioned embodiments represent only a few embodiments of the present invention, and although the descriptions are relatively specific and detailed, they should not be interpreted as limiting the scope of the claims of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these also fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention is based on the claims.

Claims

1. A gas circulation device comprising a first gas transport assembly, a second gas transport assembly, and a gas suction assembly, wherein the first gas transport assembly includes a first gas storage tank, the second gas transport assembly includes a second gas storage tank, the gas suction assembly is used to connect the first gas storage tank and the second gas storage tank to a gas source, the gas suction assembly includes a pressure adjustment structure, and by adjusting the pressure adjustment structure, the gas pressure in the first gas storage tank becomes lower than the gas pressure in the second gas storage tank. A gas circulation device characterized in that the first gas transport assembly and the second gas transport assembly communicate with a stationary chamber and are used to transport a working gas to the stationary chamber until the pressure in the stationary chamber reaches a threshold, and when the pressure in the stationary chamber is released, the first gas transport assembly opens and the working gas in the stationary chamber returns to the first gas storage tank.

2. The gas circulation device according to claim 1, characterized in that a plurality of the first gas transport assemblies are provided, and by adjusting the pressure adjustment structure, the gas pressure in the first gas storage tank of the plurality of the first gas transport assemblies is sequentially increased or decreased.

3. The gas circulation device according to claim 1, wherein the first gas transport assembly further includes a first pipeline and a first gas joint communicating with the first gas storage tank via the first pipeline, and the second gas transport assembly further includes a second pipeline and a second gas joint communicating with the second gas storage tank via the second pipeline.

4. The gas circulation device according to claim 3, characterized in that a plurality of first gas joints are provided in the first pipeline and a plurality of second gas joints are provided in the second pipeline.

5. The gas circulation device according to claim 4, characterized in that the first pipeline includes a plurality of first branches parallel to each other, and each of the first branches is provided with a plurality of first gas joints at intervals, and the second pipeline includes a plurality of second branches parallel to each other, and each of the second branches is provided with a plurality of second gas joints at intervals.

6. The gas circulation device according to claim 3, characterized in that the first gas joint and the second gas joint are provided as quick joints.

7. The gas circulation device according to claim 3, wherein the first gas transport assembly further includes a first filter provided between the first gas storage tank and the first gas joint, and the second gas transport assembly further includes a second filter provided between the second gas storage tank and the second gas joint.

8. The gas circulation device according to claim 1, characterized in that a quick-plug type flange is provided at the gas intake end of the gas intake assembly, and the gas intake end is connected to a gas source via the quick-plug type flange.

9. The gas suction assembly includes a first gas suction pipe communicating with the first gas storage tank and a second gas suction pipe communicating with the second gas storage tank, and the pressure adjustment structure is a relief valve provided in the first gas suction pipe, as described in claim 1.

10. The gas suction assembly includes a first gas suction pipe communicating with the first gas storage tank and a second gas suction pipe communicating with the second gas storage tank, and the pressure adjustment structure is a booster valve provided in the second gas suction pipe, as described in claim 1.

11. A battery storage device, A gas circulation device according to any one of claims 1 to 10, A battery storage device including a storage chamber communicating with both the first gas transport assembly and the second gas transport assembly.

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