Shut-off valve structure, fluid transport structure, energy storage system and electrical equipment

Abstract

The shutoff valve structure (20) is disclosed, and the shutoff valve structure (20) includes a male valve (21) having a male pipe (211) passing through to form a first passage (210) and a male piston (212) movably provided in the first passage (210) to close or open the first passage (210); a female pipe (231) passing through to form a second passage (230) and a male piston (212) movably provided in the second passage (230) to close or open the second passage (230); and a female valve (23) having a female piston (232) for connecting the male pipe (211) to the female pipe (231), whereby when the male pipe (211) is connected to the female pipe (231), the male piston (212) abuts against the female piston (232), and the first passage (210) and the second passage (230) are in communication; when the male pipe (211) and the female pipe (231) are disconnected, the male piston (212) moves away from the female piston (232), and the first passage (210) and the second passage (230) are closed. A fluid transport structure is disclosed, in which the shut-off valve structure (20) is provided at a communication point between a main pipe (10) and a branch pipe (30). An energy storage system is disclosed, which includes the fluid transport structure and a battery pack (50). An electrical device is further disclosed, which includes the energy storage system. In this way, the male valve and female valve are used to connect the pipelines, respectively, and the open / closeable structure of the male valve and female valve ensures that the pipelines are closed during the repair process, thereby preventing the cooling medium in the pipelines from being expelled.

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on December 12, 2022, bearing application number 202223342620.2 and titled "Shut-off valve structure, fluid transport structure, energy storage system and electrical equipment," the entire contents of which are incorporated herein by reference.

[0002] This application relates to the technical field of energy storage, and in particular to shut-off valve structures, fluid transport structures, energy storage systems, and electrical devices. [Background technology]

[0003] Among various energy storage technologies, batteries are increasingly becoming the optimal choice for industrial and automotive energy storage devices due to their high energy density characteristics and promising commercialization prospects. However, the performance of large-capacity, high-power energy storage battery systems is sensitive to temperature changes, and long-term exposure to high and low temperatures and the accumulation of temperature differences in the system will affect the battery's lifespan and performance. Therefore, when an energy storage battery system is operating, it is necessary to use specialized cooling equipment to dissipate heat and ensure that the temperatures of various parts of the system are as consistent as possible.

[0004] In conventional energy storage liquid cooling systems, coolant is typically added to the battery pack, but both the piping and the battery pack may be damaged and need to be replaced. During the replacement process, the entire system must be purged to achieve the goal of replacing components in the liquid cooling system. However, purging the entire liquid cooling system takes a long time, and improper purging can lead to environmental pollution. Furthermore, the coolant cannot be easily reinjected into the system, resulting in a waste of human and material resources.

[0005] Even if a valve is used to shut off the pipes, when the pipes at both ends of the valve are separated, only one end of the valve is blocked, and the other end of the valve is still open, so the coolant will be discharged from the other end of the pipe, and the problem of needing to drain the coolant still exists. Summary of the Invention [Problem to be solved by the invention]

[0006] The main object of the present application is to provide a shut-off valve structure intended to facilitate replacement of pipes and battery packs for transporting a cooling medium in an energy storage system, and to avoid expelling the cooling medium in the process of replacing the pipes. [Means for solving the problem]

[0007] In order to achieve the above object, the present application provides a shutoff valve structure, the shutoff valve structure comprising: an eloquent valve including a male pipe extending therethrough to form a first passageway, and a male piston movably disposed within the first passageway to close or open the first passageway; a female valve including a female pipe extending therethrough to form a second passageway, and a female piston movably disposed within the second passageway to close or open the second passageway; When the male pipe is connected to the female pipe, the male piston is abutted against the female piston, and the first passage and the second passage communicate with each other; When the male pipe and the female pipe are disconnected, the male piston separates from the female piston, and the first passage and the second passage are respectively closed.

[0008] Preferably, a first position limiting protrusion is formed on the inner wall of the male pipe, and the first position limiting protrusion divides the first passage into a first segment and a second segment which communicate with each other, and both ends of the male piston are provided on the first segment and the second segment, respectively, so that when one end of the male piston moves to the first position limiting protrusion, it is stopped and the first passage is closed; and a second position limiting protrusion is formed on the inner wall of the female pipe, and the second position limiting protrusion divides the second passage into a third segment and a fourth segment which communicate with each other, and both ends of the female piston are provided on the third segment and the fourth segment, respectively, so that when one end of the female piston moves to the second position limiting protrusion, it is stopped and the second passage is closed.

[0009] Preferably, the male piston comprises: a male piston rod provided in the first segment and the second segment so as to penetrate therethrough, wherein a first gap is formed between the male piston rod and the first position limiting protrusion; two male stop plates respectively provided on both ends of the male piston rod, wherein a first slit is formed between the circumferential side of each male stop plate and the inner wall of the first passage so that when one of the male stop plates moves to the first position limiting protrusion, it is stopped and closes the first gap, The female piston is a female piston rod provided in the third segment and the fourth segment so as to penetrate therethrough, wherein a second gap is formed between the female piston rod and the second position limiting protrusion; The piston rod further includes two female stop plates respectively provided at both ends thereof, wherein a second slit is formed between the circumferential side of each female stop plate and the inner wall of the second passage so that one of the female stop plates is stopped when it moves to the second position limiting protrusion and closes the second gap.

[0010] Preferably, one end of the male pipe is defined as a male valve body connecting end, and one end of the female pipe is defined as a female valve body connecting end, and the female valve body connecting end is inserted into the male valve body connecting end, The end of the male piston rod located at the male valve body connection end protrudes from the end of the male pipe, and the end of the female piston rod located at the female valve body connection end is provided inside the female pipe.

[0011] Preferably, the first segment is located at the male valve body connection end, and a first spring is fitted onto the outer peripheral surface of the male piston rod located at the first segment, and / or the third segment is located at the female valve body connection end, and a second spring is fitted onto the outer peripheral surface of the female piston rod located at the third segment; and / or the third segment is located at the female valve body connection end, the female stop plate located at the third segment has a via hole drilled therein, and the projection of the via hole is defined to correspond to the second position limiting protrusion; and / or the second segment is back-to-back with the male valve connecting end, and a first seal ring is provided between the male stop plate located on the second segment and the first position limiting protrusion; And / or, the fourth segment is defined so as to be back-to-back with the female valve body connection end, and a second seal ring is provided between the female stop plate located on the fourth segment and the second position limiting protrusion.

[0012] The present application provides a fluid transport structure, the fluid transport structure including a pipeline unit consisting of a main pipe and a branch pipe; the main pipe conveys a fluid; the branch pipe is detachably provided on the main pipe and communicates with the main pipe, the shut-off valve structure is provided at a communication point between the main pipe and the branch pipe, one of the male valve and the female valve is provided on the main pipe, and the other of the male valve and the female valve is provided on the branch pipe, The branch pipe transports the fluid to or discharges the fluid from the battery pack.

[0013] Preferably, the fluid transport structure includes at least two of the conduit units, at least one of the conduit units being a liquid supply conduit and at least another of the conduit units being a liquid return conduit; the fluid supply line introduces the fluid into the battery pack; The return line drains the fluid from the battery pack.

[0014] Preferably, the main pipe includes at least two main pipe segments, and two adjacent main pipe segments are connected in series by the shut-off valve structure; the branch pipe includes at least two branch pipe segments, and two adjacent branch pipe segments are connected in series by the shut-off valve structure; and / or the main pipe is provided with a plurality of liquid transport ports, each of which is connected to a corresponding one of the branch pipes; and / or the main pipe is provided with a drain valve; And / or, at least one of the branch pipes is in communication with two of the main pipes simultaneously, is arranged in parallel with one of the main pipes, and is arranged to intersect with the other of the main pipes.

[0015] The present application provides an energy storage system, which includes the fluid transport structure and a battery pack, wherein at least one of the branch pipes is in communication with the battery pack, a shut-off valve structure is provided at the communication point between the branch pipe and the battery pack, the battery pack is provided with one of the male valve and the female valve, and the branch pipe is provided with the other of the male valve and the female valve.

[0016] The present application provides an electric device, said electric device including said energy storage system. [Effects of the Invention]

[0017] The present application provides a shut-off valve structure, the shut-off valve structure including a male valve having a male pipe passing therethrough to form a first passage and a male piston movably disposed within the first passage to close or open the first passage, and a female valve having a female pipe passing therethrough to form a second passage and a female piston movably disposed within the second passage to close or open the second passage, wherein when the male pipe is connected to the female pipe, the male piston abuts against the female piston, communicating the first passage with the second passage, and when the male pipe and the female pipe are disconnected, the male piston moves away from the female piston, closing the first passage with the second passage. In this way, when the shut-off valve structure is used in adjacent pipelines of an energy storage system, loss of fluid in the pipelines is prevented during removal of the adjacent pipelines, and a shut-off valve structure is provided between the adjacent pipelines, and the male valve and female valve of the shut-off valve structure close each of the two adjacent pipelines to prevent loss of fluid during removal. Here, one end of the first passage in the male valve is connected to one of the pipelines, and one end of the second passage in the female valve is connected to the other pipeline. The open / closeable structure of the male and female valves allows the two pipelines to be open and closed. After the two pipelines are closed, they can be removed, meaning that fluid can be blocked in one of the pipelines when repairing or replacing it. This allows the operation of the pipeline that needs replacement to be achieved without disrupting the normal operation of the rest of the pipeline, and ensures that the repair process does not interfere with the operation of the energy storage system.

[0018] In order to more clearly explain the technical solutions of the embodiments of the present application or the prior art, the following briefly introduces the drawings necessary for the description of the embodiments or the prior art. The drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on the structures shown in these drawings without exerting any effort that amounts to an inventive step. [Brief explanation of the drawings]

[0019] [Figure 1] Schematic diagram of the shutoff valve structure of the present application [Figure 2] Figure 1: Schematic diagram of the three-dimensional structure of the female valve [Figure 3] Figure 1: Schematic diagram of the three-dimensional structure of eloquence [Figure 4] Figure 1: Schematic diagram of the structure of the eloquent valve [Figure 5] Figure 1: Schematic diagram of the female valve structure [Figure 6] Schematic diagram of fluid transport structure [Figure 7] Schematic diagram of the main pipe structure in Figure 6 [Figure 8] Figure 6: Schematic diagram of the branch pipe structure [Figure 9] Figure 6: Schematic diagram of the battery pack structure DETAILED DESCRIPTION OF THE INVENTION

[0020] The realization of the object, the functional features and advantages of the present application will be further explained in conjunction with the embodiments and with reference to the drawings.

[0021] The following clearly and completely describes the technical solutions of the embodiments of the present application, combined with the drawings of the embodiments of the present application, and the described embodiments are not all of the embodiments, but only some of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without any inventive effort fall within the scope of protection of the present application.

[0022] Here, all directional indications (e.g., up, down, left, right, front, back, etc.) in the embodiments of the present application are simply interpreted as relative positional relationships and movement conditions between components in a specific posture (see the drawings), and when the specific posture changes, the directional indications also change accordingly.

[0023] In this application, unless otherwise expressly specified or limited, terms such as "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" may mean a fixed connection, a detachable connection, or an integral connection, or may mean a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or may mean an internal communication between two elements or an interactive relationship between two elements. Unless otherwise expressly specified, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] Furthermore, in this application, the terms "first," "second," etc., do not indicate or imply the relative importance or the number of the indicated technical features, but are merely for descriptive purposes. Accordingly, features defined by "first" or "second" explicitly or implicitly include at least one of the features. Furthermore, the meaning of "and / or" in this specification means including three solutions in parallel. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies both A and B. Furthermore, technical solutions in each embodiment may be combined with each other as long as it is feasible for a person skilled in the art. However, if there is a contradiction or impracticality in the combination of technical solutions, such a combination of technical solutions shall be deemed nonexistent and not fall within the scope of protection claimed by this application.

[0025] The present application provides a shut-off valve structure, which includes a male valve 21 having a male pipe 211 passing therethrough to form a first passage 210, and a male piston 212 movably disposed within the first passage 210 to close or open the first passage 210; a female pipe 231 passing therethrough to form a second passage 230, and a female valve 23 having a female piston 232 movably disposed within the second passage 230 to close or open the second passage 230; when the male pipe 211 is connected to the female pipe 231, the male piston 212 abuts against the female piston 232, and the first passage 210 and the second passage 230 communicate with each other; and when the male pipe 211 and the female pipe 231 are disconnected, the male piston 212 moves away from the female piston 232, and the first passage 210 and the second passage 230 are closed, respectively.

[0026] In conventional energy storage liquid cooling systems, coolant is typically added to the battery pack, but both the conduits and the battery pack may need to be replaced due to damage. To avoid the need to expel the coolant during the conduit replacement process, the present application provides a shutoff valve structure 20, as shown in Figures 1 to 3. The shutoff valve structure includes a male valve 21 and a female valve 23. The male valve 21 includes a male pipe 211 and a male piston 212. The male pipe 211 passes through to form a first passage 210, one end of the first passage 210 is connected to one of the conduits, and the male piston 212 is movably disposed within the first passage 210 to close or open the first passage 210. The female valve 23 includes a female pipe 231 and a female piston 232. The female pipe 231 passes through to form a second passage 230, one end of the second passage 230 is connected to the other conduit, and the female piston 232 is movably disposed within the second passage 230 to close or open the second passage 230. When the male pipe 211 is connected to the female pipe 231, the male piston 212 abuts against the female piston 232, connecting the first passage 210 and the second passage 230, and allowing the two pipelines to communicate. When the male pipe 211 and the female pipe 231 are disconnected, the male piston 212 moves away from the female piston 232, closing the first passage 210 and the second passage 230, respectively, and removing the two pipelines. In this way, when the shut-off valve structure 20 is used for adjacent pipelines in an energy storage system, loss of fluid in the pipelines can be prevented during the removal of the adjacent pipelines. A shut-off valve structure 20 is provided between the adjacent pipelines, and the male valve 21 and female valve 23 of the shut-off valve structure 20 close the two adjacent pipelines, respectively, preventing loss of fluid during the removal process. Here, one end of the first passage in the male valve is connected to one of the pipelines, and one end of the second passage in the female valve is connected to the other pipeline. The open / closeable structure of the male and female valves allows the two pipelines to be open and closed. After the two pipelines are closed, they can be removed, meaning that fluid can be blocked in one of the pipelines when repairing or replacing it. This allows the operation of the pipeline that needs replacement to be achieved without disrupting the normal operation of the rest of the pipeline, and ensures that the repair process does not interfere with the operation of the energy storage system.

[0027] For example, a fluid transport structure is provided, which includes a main pipe 10 for transporting a cooling medium and a branch pipe 30 detachably connected to the main pipe 10 and communicating with the main pipe 10. A shut-off valve structure 20 is provided at the junction between the main pipe 10 and the branch pipe 30, and the branch pipe 30 transports the cooling medium to a battery pack 50. The cooling medium is transported to the battery pack 50 through the main pipe 10 and the branch pipe 30 to cool the battery pack 50. The main pipe 10 and the branch pipe 30 are detachably connected to each other for individual inspection and maintenance of each pipe, and can be separated for repair or replacement, facilitating repair. In addition, a shut-off valve structure 20 is provided between the main pipe 10 and the branch pipe 30 to prevent loss of the cooling medium during pipe removal. The shut-off valve structure 20 closes the main pipe 10 and the branch pipe 30, respectively, to prevent loss of the cooling medium during removal. This allows the operation of the section of the conduit that needs to be replaced to be carried out without disrupting the normal operation of other sections of the conduit, ensuring that the cooling operation of the battery pack 50 is not interfered with during the repair process, and avoiding the impact on the battery pack 50 due to the cessation of cooling.

[0028] 4, a first position limiting protrusion 213 is formed on the inner wall of the male pipe 211, and the first position limiting protrusion 213 divides the first passage 210 into a first segment 210a and a second segment 210b which are connected to each other. Both ends of the male piston 212 are provided on the first segment 210a and the second segment 210b, respectively, so that when one end of the male piston 212 moves to the first position limiting protrusion 213, it is stopped and closes the first passage 210. After the male piston 212 receives a force, one end of the male piston 212 is stopped when it moves to the first position limiting protrusion 213, and as one end of the male piston 212 is stopped, it blocks the first position limiting protrusion 213 and closes the first passage 210. Meanwhile, when the male piston 212 receives a force and the other end moves toward the first position limiting protrusion 213, the first passage 210 is not sealed, and the entire male piston 212 moves, and the other end moves toward the first position limiting protrusion 213, and then the one end moves in a direction facing back to back against the first position limiting protrusion 213, thereby opening the blocked passage.

[0029] 5, a second position limiting protrusion 233 is formed on the inner wall of the female pipe 231, and the second position limiting protrusion 233 divides the second passage 230 into a third segment 230a and a fourth segment 230b, which are connected to each other. Both ends of the female piston 232 are respectively provided on the third segment 230a and the fourth segment 230b so that when one end of the female piston 232 moves to the second position limiting protrusion 233, it is stopped and closes the second passage 230. After the female piston 232 receives a force, one end moves to the second position limiting protrusion 233 and is stopped by the second position limiting protrusion 233, closing the second passage 230. On the other hand, since the female piston 232 receives a force, when the other end moves toward the second position limiting protrusion 233, the second passage 230 is not blocked, and when the other end of the female piston 232 moves toward the second position limiting protrusion 233, one end moves in a direction facing back to back against the second position limiting protrusion 233, so that the one end is not stopped by the second position limiting protrusion 233 and opens the blocked passage.

[0030] That is, when the male valve 21 and the female valve 23 are in communication, the male piston 212 and the female piston 232 come into contact with each other to generate a thrust, and the male piston 212 receives the force, so that the other end thereof moves toward the first position limiting protrusion 213, thereby opening up the first passage 210, and the female piston 232 receives the force, so that the other end thereof moves toward the second position limiting protrusion 233, thereby opening up the second passage 230, thereby opening up the first passage 210 and the second passage 230.

[0031] When the male valve 21 and female valve 23 are disconnected, the male piston 212 receives the impact force of the fluid and one end moves to the first position limiting protrusion 213 and is stopped, thereby blocking the pipeline connected to the male valve 21, and fluid does not overflow from the male valve 21. The female piston 232 receives the impact force of the fluid and one end moves to the second position limiting protrusion 233 and is stopped, thereby blocking the pipeline connected to the female valve 23, and fluid does not overflow from the female valve 23. When the male valve 21 and female valve 23 are disconnected, each of the two pipelines is blocked.

[0032] Furthermore, as shown in FIG. 4, the male piston 212 includes a male piston rod 212a and two male stop plates 212b, the male piston rod 212a is installed in the first segment 210a and the second segment 210b so as to penetrate, a first gap 214 is formed between the male piston rod 212a and the first position limiting protrusion 213, and the two male stop plates 212b are installed at both ends of the male piston rod 212a, respectively, a first slit is formed between the peripheral side of each male stop plate 212b and the inner wall of the first passage 210, so that when one male stop plate 212b moves to the first position limiting protrusion 213, it is stopped and the first gap 214 is closed.

[0033] That is, the male piston rod 212a is provided in the first segment 210a and the second segment 210b so as to penetrate therethrough, and a first gap 214 is formed between the male piston rod 212a and the first position limiting protrusion 213, so that when the first passage 210 is not blocked, fluid can flow between the first segment 210a and the second segment 210b through the first gap 214.

[0034] Two male stop plates 212b are provided at both ends of the male piston rod 212a, and a first slit is formed between the peripheral side of each male stop plate 212b and the inner wall of the first passage 210, so that when the first passage 210 is not blocked, the fluid flows through the first slit into the first passage 210, realizing the fluid communication between the two pipelines connected by the shut-off valve structure 20.

[0035] At the same time, two male stop plates 212b are respectively provided on both ends of the male piston rod 212a, so that when one of the male stop plates 212b moves to the first position limiting protrusion 213, it is stopped and blocks the first gap 214. After the first gap 214 is blocked, the first passage 210 is blocked, and fluid cannot flow between the first segment 210a and the second segment 210b, and the pipeline in which the male valve 21 is provided is blocked, thereby realizing the removal and separation of the two pipelines connected by the shut-off valve structure 20.

[0036] The female piston 232 includes a female piston rod 232a and two female stop plates 232b. The female piston rod 232a is provided in the third segment 230a and the fourth segment 230b so as to penetrate therethrough. A second gap 234 is formed between the female piston rod 232a and the second position limiting protrusion 233. The two female stop plates 232b are provided at both ends of the female piston rod 232a. A second slit is formed between the circumferential side of each female stop plate 232b and the inner wall of the second passage 230. This allows one female stop plate 232b to be stopped when it moves toward the second position limiting protrusion 233, thereby closing the second gap 234.

[0037] That is, a second gap 234 is formed between the female piston rod 232a and the second position limiting protrusion 233, so that when the second passage 230 is not blocked, fluid can flow between the third segment 230a and the fourth segment 230b through the second gap 234.

[0038] Two female stop plates 232b are provided at both ends of the female piston rod 232a, respectively, and a second slit is formed between the peripheral side of each female stop plate 232b and the inner wall of the second passage 230, so that when the second passage 230 is not blocked, fluid flows through the second slit into the second passage 230, realizing fluid communication between the two pipelines connected by the shut-off valve structure 20.

[0039] At the same time, a second slit is formed between the circumferential side of each female stop plate 232b and the inner wall of the second passage 230, which allows one female stop plate 232b to be stopped when it moves to the second position limiting protrusion 233, closing the second gap 234. After the second gap 234 is closed, the second passage 230 is closed, fluid cannot flow between the third segment 230a and the fourth segment 230b, and the pipe in which the female valve 23 is installed is closed, thereby realizing the removal and separation of the two pipes connected by the shut-off valve structure 20.

[0040] Furthermore, as shown in Figures 2 to 5, one end of the male pipe 211 is defined as the male valve body connecting end 216, one end of the female pipe 231 is defined as the female valve body connecting end 236, the female valve body connecting end 236 is inserted into the male valve body connecting end 216, the end of the male piston rod 212a located at the male valve body connecting end 216 protrudes from the end of the male pipe 211, and the end of the female piston rod 232a located at the female valve body connecting end 236 is provided inside the female pipe 231. In this way, after the female valve 23 and the male valve 21 are inserted into the male valve body connecting end 216 by the female valve body connecting end 236, as shown in FIG. 1, the opposing ends of the male piston rod 212a and the female piston rod 232a can come into contact with each other, and the male piston rod 212a and the female piston rod 232a can be moved in a back-to-back direction, so that the male piston rod 212a does not block the first passage 210, and the female piston rod 232a does not block the second passage 230, and the first passage 210 and the second passage 230 communicate with each other, thereby realizing the communication between the two adjacent pipelines provided with the shut-off valve structure 20.

[0041] 4, the first segment 210a is located at the male valve body connecting end 216, and the first spring 215 is fitted onto the outer circumferential surface of the male piston rod 212a located at the first segment 210a. After the male valve and the female valve are disconnected, the male piston rod 212a moves as a whole due to the extension of the first spring 215, and the male stop plate 212b at one end moves towards the first position limiting protrusion 213 and is stopped by the first position limiting protrusion 213, closing the first passage 210.

[0042] 5, the third segment 230a is located at the female valve body connecting end 236, and the second spring 235 is fitted onto the outer circumferential surface of the female piston rod 232a located at the third segment 230a. In this way, after the male valve and the female valve are disconnected, the female piston rod 232a moves the entire second spring 235 due to the extension of the second spring 235, and the female stop plate 232b at one end moves toward the second position limiting protrusion 233 and is stopped by the second position limiting protrusion 233, closing the second passage 230.

[0043] 2 and 5, the third segment 230a is located at the female valve body connecting end 236, and a via hole 2321 is formed in the female stop plate 232b located at the third segment 230a, and the projection of the via hole 2321 is defined to correspond to the second position limiting protrusion 233, so that the fluid can flow through the via hole 2321.

[0044] 4, the second segment 210b is defined so that it faces back to back with the male valve connecting end 216, and a first seal ring 217 is provided between the male stop plate 212b located on the second segment 210b and the first position limiting protrusion 213. In this way, when the male stop plate 212b located on the second segment 210b is stopped by the first position limiting protrusion 213, the first seal ring 217 improves the sealing performance.

[0045] 5, the fourth segment 230b is defined so as to face the female valve body connecting end 236, and a second seal ring 237 is provided between the female stop plate 232b located on the fourth segment 230b and the second position limiting protrusion 233. In this way, when the female stop plate 232b located on the fourth segment 230b is stopped by the second position limiting protrusion 233, the second seal ring 237 improves sealing performance.

[0046] As shown in FIG. 6 , the present application further provides a fluid transport structure, which includes a conduit unit composed of a main pipe 10 and a branch pipe 30. The main pipe 10 includes a main pipe body 11 for transporting a fluid. The branch pipe 30 is detachably attached to the main pipe 10 and includes a branch pipe body 31 for transporting a fluid. The branch pipe 30 is connected to the main pipe 10. A shut-off valve structure 20 is provided at the connection between the main pipe 10 and the branch pipe 30. The main pipe 10 is provided with one of a male valve 21 and a female valve 23, and the branch pipe 30 is provided with the other of the male valve 21 and the female valve 23. The branch pipe 30 transports fluid to or discharges fluid from a battery pack 50. By disposing the shut-off valve structure 20 between the main pipe 10 and the branch pipe 30, fluid does not leak from the disconnection port during maintenance or removal, and each conduit can be maintained individually. This avoids fluid leakage from the disconnection port during traditional maintenance, reducing maintenance time and costs.

[0047] The shutoff valve structure 20 employs all the technical solutions of all the above-mentioned embodiments, and therefore has at least all the beneficial effects of the technical solutions of the above-mentioned embodiments, which will not be detailed here.

[0048] Furthermore, the fluid transport structure includes at least two conduit units, at least one of which is a liquid supply conduit 70 and at least one of which is a liquid return conduit 80, where the liquid supply conduit 70 introduces fluid into the battery pack 50 and the liquid return conduit 80 discharges fluid from the battery pack 50. This forms a circulating cooling conduit to improve the heat dissipation effect of the battery pack.

[0049] Furthermore, the main pipe 10 includes at least two main pipe segments, and two adjacent main pipe segments are connected in series by the shut-off valve structure 20, so that the main pipe 10 can be extended as needed to facilitate removal and maintenance when a portion of the main pipe 10 needs maintenance. Similarly, the branch pipe 30 includes at least two branch pipe segments, and two adjacent branch pipe segments are connected in series by the shut-off valve structure 20. The branch pipe 30 can be extended as needed to facilitate maintenance of a specific portion of the branch pipe.

[0050] And / or, in order to easily connect multiple battery packs 50, as shown in Figures 6 and 7, the main pipe 10 is provided with multiple liquid transport ports 12, and each liquid transport port 12 is connected to a corresponding branch pipe 30.

[0051] And / or, as shown in FIG. 7, the main pipe 10 is provided with a drain valve 13 through which fluid can be discharged or introduced.

[0052] 6, at least one branch pipe 30 may be connected to two main pipes 10 at the same time, arranged parallel to one main pipe 10, and arranged crossing the other main pipe 10. In this way, multiple pipelines may be installed according to needs, and the battery packs 50 may be arranged effectively, so that the battery packs 50 may be stacked or arranged adjacent to each other in parallel, thereby realizing centralized heat dissipation of the battery packs 50.

[0053] In addition, a heat-insulating layer is wrapped around the outside of the main pipe 10 and the branch pipe 30. The specific material and shape of the main pipe 10 and the branch pipe 30 are not limited, and they may be made of a metallic or non-metallic material, and may be square or circular pipes, for example.

[0054] The present application further provides an energy storage system, which, as shown in Figures 6 to 9, includes a fluid transport structure and a battery pack 50, wherein at least one branch pipe 30 is in communication with the battery pack 50, a shut-off valve structure 20 is provided at the communication point between the branch pipe 30 and the battery pack 50, the battery pack 50 is provided with one of a male valve 21 and a female valve 23, and the branch pipe 30 is provided with the other of the male valve 21 and the female valve 23. The battery pack 50 includes a battery pack body 51, to which the male valve 21 is connected, and the branch pipe 30 is provided with the female valve 23, which communicates between the branch pipe 30 and the battery pack 50 and facilitates the inflow and outflow of fluid into and out of the battery pack 50.

[0055] The fluid transport structure employs all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects of the technical solutions of the above embodiments, which will not be detailed here.

[0056] The present application further provides an electric device, the electric device including an energy storage system. The energy storage system powers the electric device.

[0057] The energy storage system adopts all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects of the technical solutions of the above embodiments, which will not be detailed here.

[0058] The above is merely a preferred embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural modifications completed based on the concept of the present application and the contents of the specification and drawings of the present application, or any modifications directly or indirectly applicable to other related technical fields, all fall within the scope of patent protection of the present application. [Explanation of symbols]

[0059] 10...master; 11...main body; 12 ···Liquid transport port; 13 ···Drain valve; 20 ···Shut-off valve structure; 21 ···Eloquence; 210...1st aisle; 210a ···First segment; 210b ···Second segment; 211 ···Male pipe; 212 ···Male piston; 212a ···Male piston rod; 212b ···Male stop plate; 213 ···First position limiting protrusion; 214 ···First gap; 215 ···First spring; 216 ···Eloquent body connecting end; 217 ···First seal ring; 23 ···female valve; 230...2nd aisle; 230a Third segment 230b ···Fourth segment; 231 ···female pipe; 232 ···female piston; 2321 ···Beer hall; 232a ···female piston rod; 232b ···female stop plate; 233 ···Second position limiting protrusion; 234 ···Second gap; 235 ···Second spring; 236 ···Female valve body connection end; 237 ···Second seal ring; 30 ···Branch pipe; 31 ···Branched pipe body; 50 ··· battery pack; 51 ···Battery pack body; 70 ···Liquid supply line; 80...Return liquid line.

Claims

1. A shut-off valve structure, comprising: an eloquent valve (21) including a male pipe (211) passing through and forming a first passage (210), and a male piston (212) movably disposed within the first passage (210) to close or open the first passage (210); a female valve (23) having a female pipe (231) passing therethrough to form a second passage (230), and a female piston (232) movably provided within the second passage (230) to close or open the second passage (230); When the male pipe (211) is connected to the female pipe (231), the male piston (212) is abutted against the female piston (232), and the first passage (210) and the second passage (230) communicate with each other. When the male pipe (211) and the female pipe (231) are disconnected, the male piston (212) separates from the female piston (232), and the first passage (210) and the second passage (230) are each closed.

2. A first position limiting protrusion (213) is formed on the inner wall of the male pipe (211), and the first position limiting protrusion (213) divides the first passage (210) into a first segment (210a) and a second segment (210b) that communicate with each other. Both ends of the male piston (212) are provided on the first segment (210a) and the second segment (210b), respectively, so that when one end of the male piston (212) moves to the first position limiting protrusion (213), it is stopped and closes the first passage (210).

2. The shutoff valve structure according to claim 1, wherein a second position limiting protrusion (233) is formed on the inner wall of the female pipe (231), and the second position limiting protrusion (233) divides the second passage (230) into a third segment (230a) and a fourth segment (230b) that are connected to each other, and both ends of the female piston (232) are provided on the third segment (230a) and the fourth segment (230b), respectively, so that when one end of the female piston (232) moves to the second position limiting protrusion (233), it is stopped and the second passage (230) is closed.

3. The male piston (212) a male piston rod (212a) provided in the first segment (210a) and the second segment (210b) so as to penetrate therethrough, wherein a first gap (214) is formed between the male piston rod (212a) and the first position limiting protrusion (213); two male stop plates (212b) respectively provided at both ends of the male piston rod (212a), wherein a first slit is formed between the circumferential side of each male stop plate (212b) and the inner wall of the first passage (210) so that when one of the male stop plates (212b) moves to the first position limiting protrusion (213), it is stopped and closes the first gap (214); The female piston (232) a female piston rod (232a) provided in the third segment (230a) and the fourth segment (230b) so as to penetrate therethrough, wherein a second gap (234) is formed between the female piston rod (232a) and the second position limiting protrusion (233); 3. The shutoff valve structure according to claim 2, further comprising: two female stop plates (232b) respectively provided at both ends of the female piston rod (232a), wherein a second slit is formed between the circumferential side of each female stop plate (232b) and the inner wall of the second passage (230) so that one female stop plate (232b) is stopped when it moves to the second position limiting protrusion (233) and closes the second gap (234).

4. One end of the male pipe (211) is defined as a male valve body connecting end (216), and one end of the female pipe (231) is defined as a female valve body connecting end (236), and the female valve body connecting end (236) is inserted into the male valve body connecting end (216); 4. The shutoff valve structure according to claim 3, wherein an end of the male piston rod (212a) positioned at the male valve body connecting end (216) protrudes from an end of the male pipe (211), and an end of the female piston rod (232a) positioned at the female valve body connecting end (236) is provided inside the female pipe (231).

5. The first segment (210a) is located at the male valve body connection end (216), and a first spring (215) is fitted onto the outer circumferential surface of the male piston rod (212a) located at the first segment (210a), and / or the third segment (230a) is located at the female valve body connection end (236), and a second spring (235) is fitted onto the outer peripheral surface of the female piston rod (232a) located at the third segment (230a); and / or the third segment (230a) is located at the female valve body connecting end (236), and the female stop plate (232b) located on the third segment (230a) has a via hole (2321) formed therein, and the projection of the via hole (2321) is defined to correspond to the second position limiting protrusion (233); and / or the second segment (210b) is back-to-back with the male valve connecting end (216), and a first seal ring (217) is provided between the male stop plate (212b) located on the second segment (210b) and the first position limiting protrusion (213); And / or, the fourth segment (230b) is back-to-back with the female valve body connection end (236), and a second seal ring (237) is provided between the female stop plate (232b) located on the fourth segment (230b) and the second position limiting protrusion (233).

6. A fluid transport structure, the fluid transport structure including a pipeline unit consisting of a main pipe (10) and a branch pipe (30), The main pipe (10) carries a fluid; The branch pipe (30) is detachably provided on the main pipe (10) and communicates with the main pipe (10), and the cut-off valve structure (20) according to any one of claims 1 to 5 is provided at the communication point between the main pipe (10) and the branch pipe (30), the main pipe (10) is provided with one of the male valve (21) and the female valve (23), the branch pipe (30) is provided with the other of the male valve (21) and the female valve (23), and the branch pipe (30) transports the fluid to a battery pack (50) or discharges the fluid from the battery pack (50).

7. the fluid transport structure comprises at least two of the conduit units, at least one of the conduit units being a liquid supply conduit (70) and at least another of the conduit units being a liquid return conduit (80); the fluid supply line (70) introduces the fluid into the battery pack (50); 7. The fluid transport structure of claim 6, wherein the return line (80) drains the fluid from the battery pack (50).

8. The main pipe (10) includes at least two main pipe segments, and two adjacent main pipe segments are connected in series by the shut-off valve structure (20). The branch pipe (30) includes at least two branch pipe segments, and two adjacent branch pipe segments are connected in series by the shut-off valve structure (20). and / or the main pipe (10) is provided with a plurality of liquid transport ports (12), each of which is connected to one of the branch pipes (30); and / or the main pipe (10) is provided with a drain valve (13); And / or the fluid transport structure according to claim 6 or 7, characterized in that at least one of the branch pipes (30) is simultaneously connected to two of the main pipes (10), arranged parallel to one of the main pipes (10) and arranged crossing the other of the main pipes (10).

9. An energy storage system, comprising the fluid transport structure and a battery pack (50) according to any one of claims 6 to 8, wherein at least one of the branch pipes (30) communicates with the battery pack (50), a shut-off valve structure (20) is provided at a communication point between the branch pipe (30) and the battery pack (50), the battery pack (50) is provided with one of the male valve (21) and the female valve (23), and the branch pipe (30) is provided with the other of the male valve (21) and the female valve (23).

10. 10. An electrical device comprising the energy storage system of claim 9.

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