Heat exchange device for vanadium redox flow battery energy storage system

Abstract

The utility model discloses a heat exchange device used in a vanadium redox flow battery energy storage system, which comprises a heat exchanger, a refrigerating machine and a vanadium electrolyte tank, the heat exchanger is connected with the refrigerating machine through a refrigerant pipe, and the heat exchanger is connected with the vanadium electrolyte tank through a connecting pipe; a heat exchange structure is further arranged in the heat exchanger. According to the heat exchange device used in the vanadium redox flow battery energy storage system, the S-shaped partition plate flow channel is designed in the heat exchanger shell, so that the flowing path length of liquid in a shell pass is effectively increased, the contact time of the shell pass and a tube pass is prolonged, and the heat exchange efficiency is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vanadium liquid flow batteries and relates to a heat exchange device used in a vanadium liquid flow battery energy storage system. Background Art

[0002] During the discharge process of vanadium flow batteries, some energy is released in the form of heat, causing the electrolyte temperature to rise. When the ambient temperature is particularly low and the vanadium flow battery is not in operation, the electrolyte temperature will drop along with the ambient temperature. Maintaining the appropriate electrolyte temperature is crucial to the normal performance of the vanadium flow battery. Therefore, the electrolyte temperature must be controlled to ensure the normal performance of the vanadium flow battery. Therefore, a heat exchanger is required in the vanadium flow battery system, and the excellent performance of the heat exchanger will directly affect the overall performance of the vanadium flow battery system.

[0003] Currently, vanadium flow battery systems commonly use plastic tubular heat exchangers, with the chiller transferring heat to the electrolyte via water as an intermediate fluid. Because plastics have low thermal conductivity, this results in low heat transfer efficiency per unit volume and a large volume per unit heat dissipation power. Furthermore, the presence of the intermediate fluid in the heat transfer process results in energy loss during the cooling / heating process, reducing heat transfer efficiency per unit volume. Utility Model Content

[0004] The purpose of the utility model is to provide a heat exchange device for a vanadium liquid flow battery energy storage system, which can effectively reduce the energy loss in the cooling / heating process of the vanadium liquid flow battery and improve the heat exchange efficiency per unit volume.

[0005] The technical solution adopted by the present invention is a heat exchange device used in a vanadium liquid flow battery energy storage system, comprising a heat exchanger, a refrigerator and a vanadium electrolyte tank. The heat exchanger and the refrigerator are connected by a refrigerant pipe, and the heat exchanger and the vanadium electrolyte tank are connected by a connecting pipe; a heat exchange structure is also provided inside the heat exchanger.

[0006] The utility model is also characterized in that:

[0007] The heat exchanger comprises an upper cover and a lower cover, which are connected by bolts. A heat exchange structure is arranged in a cavity formed by the upper cover and the lower cover.

[0008] The heat exchange structure includes multiple partition structures arranged along the flow direction of the liquid in the heat exchanger. The multiple partition structures are distributed in the upper cover body and the lower cover body. The multiple partition structures divide the interior of the heat exchanger into multiple semi-enclosed chambers to form S-shaped partition flow channels, and coils are arranged in the S-shaped partition flow channels.

[0009] The partition structure includes multiple card slots arranged in the upper cover body and the lower cover body. The multiple card slots are fixed in the upper cover body and the lower cover body. The card slots in the upper cover body 7 and the lower cover body are alternately arranged; a partition is provided in each card slot.

[0010] A threaded channel is also provided on the outer wall of the coil.

[0011] The upper cover of the heat exchanger is provided with a refrigerant inlet and a refrigerant outlet. The two ends of the coil pass through the refrigerant inlet and the refrigerant outlet respectively and are connected with the refrigerant pipe of the refrigerator.

[0012] The coil and refrigerant pipe are fixed by flared connectors.

[0013] An electrolyte inlet and an electrolyte outlet are respectively provided at both ends of the lower cover body. One end of the connecting tube is connected to the vanadium electrolyte tank, and the other end of the connecting tube is connected to the electrolyte inlet.

[0014] The coil is made of titanium.

[0015] The refrigerant pipe is made of copper.

[0016] The beneficial effects of the utility model are:

[0017] (1) The heat exchange device used in the vanadium liquid flow battery energy storage system of the utility model adopts a titanium-based tube as the refrigerant tube of the refrigerator, eliminating the intermediate medium (water or other fluids), thereby avoiding the energy loss caused by the intermediate medium;

[0018] (2) The heat exchange device used in the vanadium flow battery energy storage system of the utility model adopts a tube with a metal base material. The high thermal conductivity of the metal greatly improves the heat exchange efficiency of the heat exchanger, and the volume of the device is greatly reduced compared with the ordinary plastic tube heat exchanger;

[0019] (3) The utility model is used in a heat exchange device in a vanadium liquid flow battery energy storage system. A threaded channel is provided on the outer wall of the coil. This causes the medium inside and outside the coil to flow in a swirling flow. During the rotation process, the fluid increases contact with the coil wall, thereby improving the convective heat transfer efficiency.

[0020] (4) The utility model designs an S-shaped baffle flow channel in the shell of the heat exchanger used in the heat exchange device of the vanadium liquid flow battery energy storage system, which effectively increases the flow path length of the liquid in the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a heat exchange device used in a vanadium liquid flow battery energy storage system according to the present invention;

[0022] Figure 2This is a cross-sectional view of a heat exchanger of a heat exchange device used in a vanadium flow battery energy storage system of the present invention;

[0023] Figure 3 This is a schematic structural diagram of the lower cover of the heat exchanger of the heat exchange device used in the vanadium liquid flow battery energy storage system of the present invention;

[0024] Figure 4 This is an exploded diagram of a heat exchanger of a heat exchange device used in a vanadium liquid flow battery energy storage system of the present invention.

[0025] In the figure, 1. vanadium electrolyte tank, 2. heat exchanger, 3. refrigerator, 4. refrigerant pipe, 5. connecting pipe, 6. heat exchange structure, 7. upper cover, 8. lower cover, 9. partition structure, 10. S-shaped partition flow channel, 11. coil, 12. slot, 13. partition, 14. threaded channel, 15. refrigerant inlet, 16. refrigerant outlet, 17. electrolyte inlet, 18. electrolyte outlet, 19. flared connector. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] The heat exchange device used in a vanadium flow battery energy storage system comprises a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0028] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchange structure 6 is arranged in the cavity formed by the upper cover 7 and the lower cover 8.

[0029] The heat exchange structure 6 includes multiple baffle structures 9 arranged along the liquid flow direction within the heat exchanger 2. The multiple baffle structures 9 are distributed within the upper cover 7 and the lower cover 8. The multiple baffle structures 9 divide the interior of the heat exchanger 2 into multiple semi-enclosed chambers, thereby forming S-shaped baffle flow channels 10. The S-shaped baffle flow channels 10 are provided with coils 11. The design of the S-shaped baffle flow channels 10 effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency.

[0030] The baffle structure 9 includes multiple slots 12 disposed within the upper cover 7 and the lower cover 8. Each slot 12 is fixed to the upper cover 7 and the lower cover 8, and the slots 12 within the upper cover 7 and the lower cover 8 are arranged alternately. Each slot 12 is provided with a baffle 13. The baffles 13 are used to divide the inner cavity into several semi-enclosed chambers, forming S-shaped baffle flow channels 10. This effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and improves the heat exchange efficiency of the heat exchanger 2.

[0031] A threaded channel 14 is also provided on the outer wall of the coil 11, so that the medium inside and outside the coil 11 flows in a swirl. During the rotation process, the fluid increases contact with the wall of the coil 11, thereby improving the convective heat exchange efficiency.

[0032] A refrigerant inlet 15 and a refrigerant outlet 16 are provided on the upper cover 7 of the heat exchanger 2 . Two ends of the coil 11 pass through the refrigerant inlet 15 and the refrigerant outlet 16 respectively and communicate with the refrigerant pipe 4 of the refrigerator 3 .

[0033] The coil 11 and the refrigerant pipe 4 are fixed via a flared connector 19 .

[0034] An electrolyte inlet 17 and an electrolyte outlet 18 are respectively provided at both ends of the lower cover 8 . One end of the connecting tube 5 is connected to the vanadium electrolyte tank 1 , and the other end of the connecting tube 5 is connected to the electrolyte inlet 17 .

[0035] The coil 11 is made of titanium.

[0036] The refrigerant pipe 4 is a copper pipe.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Example 1:

[0039] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0040] Example 2:

[0041] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0042] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchanger 2 with the upper cover 7 and the lower cover 8 is designed to facilitate maintenance of the heat exchanger 2.

[0043] Example 3:

[0044] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0045] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchanger 2 with the upper cover 7 and the lower cover 8 is designed to facilitate maintenance of the heat exchanger 2.

[0046] The heat exchange structure 6 includes a plurality of baffle structures 9 disposed within the upper cover 7 and the lower cover 8. The plurality of baffle structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers, thereby forming an S-shaped baffle flow channel 10. The S-shaped baffle flow channel 10 is provided with a coil 11. The design of the S-shaped baffle flow channel 10 effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency. The coil 11 serves as a refrigerant channel, achieving the purpose of heat exchange through heat exchange between the refrigerant and the vanadium electrolyte flowing through the heat exchanger 2.

[0047] Example 4:

[0048] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0049] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchanger 2 with the upper cover 7 and the lower cover 8 is designed to facilitate maintenance of the heat exchanger 2.

[0050] The heat exchange structure 6 includes a plurality of baffle structures 9 disposed within the upper cover 7 and the lower cover 8. The plurality of baffle structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers, thereby forming an S-shaped baffle flow channel 10. The S-shaped baffle flow channel 10 is provided with a coil 11. The design of the S-shaped baffle flow channel 10 effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency. The coil 11 serves as a refrigerant channel, achieving the purpose of heat exchange through heat exchange between the refrigerant and the vanadium electrolyte flowing through the heat exchanger 2.

[0051] The outer wall of the coil 11 is also provided with a threaded channel 14, which makes the medium inside and outside the coil 11 flow in a swirl, and the fluid increases contact with the coil 11 wall during the rotation process, thereby improving the convective heat exchange efficiency.

[0052] Example 5:

[0053] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0054] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchanger 2 with the upper cover 7 and the lower cover 8 is designed to facilitate maintenance of the heat exchanger 2.

[0055] The heat exchange structure 6 includes a plurality of baffle structures 9 disposed within the upper cover 7 and the lower cover 8. The plurality of baffle structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers, thereby forming an S-shaped baffle flow channel 10. The S-shaped baffle flow channel 10 is provided with a coil 11. The design of the S-shaped baffle flow channel 10 effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency. The coil 11 serves as a refrigerant channel, achieving the purpose of heat exchange through heat exchange between the refrigerant and the vanadium electrolyte flowing through the heat exchanger 2.

[0056] The partition structure 9 includes multiple slots 12 disposed within the upper cover 7 and the lower cover 8. The slots 12 are fixed to the upper cover 7 and the lower cover 8, and the slots 12 in the upper cover 7 and the lower cover 8 are arranged alternately. A partition 13 is disposed in each slot 12. The slots 12 are fixed to the upper cover 7 and the lower cover 8 to secure the partitions 13.

[0057] Example 6:

[0058] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0059] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchanger 2 with the upper cover 7 and the lower cover 8 is designed to facilitate maintenance of the heat exchanger 2.

[0060] The heat exchange structure 6 includes a plurality of baffle structures 9 disposed within the upper cover 7 and the lower cover 8. The plurality of baffle structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers, thereby forming an S-shaped baffle flow channel 10. The S-shaped baffle flow channel 10 is provided with a coil 11. The design of the S-shaped baffle flow channel 10 effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency. The coil 11 serves as a refrigerant channel, achieving the purpose of heat exchange through heat exchange between the refrigerant and the vanadium electrolyte flowing through the heat exchanger 2.

[0061] The partition structure 9 includes multiple slots 12 disposed within the upper cover 7 and the lower cover 8. The slots 12 are fixed to the upper cover 7 and the lower cover 8, and the slots 12 in the upper cover 7 and the lower cover 8 are arranged alternately. A partition 13 is disposed in each slot 12. The slots 12 are fixed to the upper cover 7 and the lower cover 8 to secure the partitions 13.

[0062] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The two ends of the coil 11 pass through the refrigerant inlet 15 and the refrigerant outlet 16 respectively and communicate with the refrigerant pipe 4 of the refrigerator 3. The refrigerant flows into the coil 11 through the refrigerant pipe 4.

[0063] Example 7:

[0064] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0065] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchanger 2 with the upper cover 7 and the lower cover 8 is designed to facilitate maintenance of the heat exchanger 2.

[0066] The heat exchange structure 6 includes a plurality of baffle structures 9 disposed within the upper cover 7 and the lower cover 8. The plurality of baffle structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers, thereby forming an S-shaped baffle flow channel 10. The S-shaped baffle flow channel 10 is provided with a coil 11. The design of the S-shaped baffle flow channel 10 effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency. The coil 11 serves as a refrigerant channel, achieving the purpose of heat exchange through heat exchange between the refrigerant and the vanadium electrolyte flowing through the heat exchanger 2.

[0067] The partition structure 9 includes multiple slots 12 disposed within the upper cover 7 and the lower cover 8. The slots 12 are fixed to the upper cover 7 and the lower cover 8, and the slots 12 in the upper cover 7 and the lower cover 8 are arranged alternately. A partition 13 is disposed in each slot 12. The slots 12 are fixed to the upper cover 7 and the lower cover 8 to secure the partitions 13.

[0068] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The two ends of the coil 11 pass through the refrigerant inlet 15 and the refrigerant outlet 16 respectively and communicate with the refrigerant pipe 4 of the refrigerator 3. The refrigerant flows into the coil 11 through the refrigerant pipe 4.

[0069] The coil 11 and the refrigerant pipe 4 are fixed via a flared connector 19 .

[0070] Example 8:

[0071] The heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 and refrigerator 3 are connected via a refrigerant pipe 4, and the heat exchanger 2 and vanadium electrolyte tank 1 are connected via a connecting pipe 5. A heat exchange structure 6 is also provided within the heat exchanger 2. The refrigerator 3 provides refrigerant to the heat exchanger 2, the vanadium electrolyte tank 1 stores vanadium electrolyte, and the heat exchange structure 6 cools the vanadium electrolyte flowing through the heat exchanger 2.

[0072] The heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. The heat exchanger 2 with the upper cover 7 and the lower cover 8 is designed to facilitate maintenance of the heat exchanger 2.

[0073] The heat exchange structure 6 includes a plurality of baffle structures 9 disposed within the upper cover 7 and the lower cover 8. The plurality of baffle structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers, thereby forming an S-shaped baffle flow channel 10. The S-shaped baffle flow channel 10 is provided with a coil 11. The design of the S-shaped baffle flow channel 10 effectively increases the length of the liquid flow path within the shell side, increases the contact time between the shell side and the tube side, and further improves the heat exchange efficiency. The coil 11 serves as a refrigerant channel, achieving the purpose of heat exchange through heat exchange between the refrigerant and the vanadium electrolyte flowing through the heat exchanger 2.

[0074] The partition structure 9 includes multiple slots 12 disposed within the upper cover 7 and the lower cover 8. The slots 12 are fixed to the upper cover 7 and the lower cover 8, and the slots 12 in the upper cover 7 and the lower cover 8 are arranged alternately. A partition 13 is disposed in each slot 12. The slots 12 are fixed to the upper cover 7 and the lower cover 8 to secure the partitions 13.

[0075] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The two ends of the coil 11 pass through the refrigerant inlet 15 and the refrigerant outlet 16 respectively and communicate with the refrigerant pipe 4 of the refrigerator 3. The refrigerant flows into the coil 11 through the refrigerant pipe 4.

[0076] The coil 11 and the refrigerant pipe 4 are fixed via a flared connector 19 .

[0077] An electrolyte inlet 17 and an electrolyte outlet 18 are respectively provided at both ends of the lower cover 8 . One end of the connecting tube 5 is connected to the vanadium electrolyte tank 1 , and the other end of the connecting tube 5 is connected to the electrolyte inlet 17 .

[0078] Example 9:

[0079] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0080] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0081] The heat exchange structure 6 includes a plurality of baffle structures 9 disposed within the upper cover 7 and the lower cover 8. The baffle structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers, thereby forming S-shaped baffle flow channels 10. The S-shaped baffle flow channels 10 are provided with coils 11. The coils 11 are made of titanium.

[0082] Example 10:

[0083] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0084] Heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. Heat exchange structure 6 includes multiple baffle structures 9 disposed within upper and lower covers 7 and 8. These baffle structures 9 divide the interior of heat exchanger 2 into multiple semi-enclosed chambers, forming S-shaped baffle channels 10, within which coils 11 are disposed.

[0085] A threaded channel 14 is also provided on the outer wall of the coil 11. The coil 11 is made of titanium metal.

[0086] Example 11:

[0087] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0088] Heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. Heat exchange structure 6 includes multiple baffle structures 9 disposed within upper and lower covers 7 and 8. These baffle structures 9 divide the interior of heat exchanger 2 into multiple semi-enclosed chambers, forming S-shaped baffle channels 10, within which coils 11 are disposed.

[0089] The partition structure 9 includes multiple slots 12 disposed within the upper cover 7 and the lower cover 8. The slots 12 are fixed to the upper cover 7 and the lower cover 8, and the slots 12 in the upper cover 7 and the lower cover 8 are arranged alternately. A partition 13 is disposed in each slot 12. The coil 11 is made of titanium.

[0090] Example 12:

[0091] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0092] Heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. Heat exchange structure 6 includes multiple baffle structures 9 disposed within upper and lower covers 7 and 8. These baffle structures 9 divide the interior of heat exchanger 2 into multiple semi-enclosed chambers, forming S-shaped baffle channels 10, within which coils 11 are disposed.

[0093] The partition structure 9 includes a plurality of card slots 12 arranged in the upper cover body 7 and the lower cover body 8. The plurality of card slots 12 are fixed in the upper cover body 7 and the lower cover body 8. The card slots 12 in the upper cover body 7 and the lower cover body 8 are alternately arranged; a partition 13 is provided in each card slot 12.

[0094] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The two ends of the coil 11 pass through the refrigerant inlet 15 and the refrigerant outlet 16 respectively and communicate with the refrigerant pipe 4 of the refrigerator 3. The coil 11 is made of titanium metal.

[0095] Example 13:

[0096] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0097] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0098] The heat exchange structure 6 includes a plurality of partition structures 9 arranged in the upper cover 7 and the lower cover 8. The plurality of partition structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel 10, in which a coil 11 is arranged.

[0099] The partition structure 9 includes a plurality of card slots 12 arranged in the upper cover body 7 and the lower cover body 8. The plurality of card slots 12 are fixed in the upper cover body 7 and the lower cover body 8. The card slots 12 in the upper cover body 7 and the lower cover body 8 are alternately arranged; a partition 13 is provided in each card slot 12.

[0100] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The ends of the coil 11 extend through the refrigerant inlet 15 and the refrigerant outlet 16, respectively, to connect to the refrigerant pipe 4 of the refrigerator 3. The coil 11 and the refrigerant pipe 4 are secured together by a flared connector 19. The coil 11 is made of titanium.

[0101] Example 14:

[0102] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0103] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0104] The heat exchange structure 6 includes a plurality of partition structures 9 arranged in the upper cover 7 and the lower cover 8. The plurality of partition structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel 10, in which a coil 11 is arranged.

[0105] The partition structure 9 includes a plurality of card slots 12 arranged in the upper cover body 7 and the lower cover body 8. The plurality of card slots 12 are fixed in the upper cover body 7 and the lower cover body 8. The card slots 12 in the upper cover body 7 and the lower cover body 8 are alternately arranged; a partition 13 is provided in each card slot 12.

[0106] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The two ends of the coil 11 pass through the refrigerant inlet 15 and the refrigerant outlet 16 respectively and communicate with the refrigerant pipe 4 of the refrigerator 3. The coil 11 and the refrigerant pipe 4 are fixed together by a flared connector 19.

[0107] An electrolyte inlet 17 and an electrolyte outlet 18 are provided at both ends of the lower cover 8. One end of the connecting pipe 5 is connected to the vanadium electrolyte tank 1, and the other end of the connecting pipe 5 is connected to the electrolyte inlet 17. The coil 11 is made of titanium metal.

[0108] Example 15:

[0109] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0110] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0111] The heat exchange structure 6 includes a plurality of partition structures 9 arranged in the upper cover 7 and the lower cover 8. The plurality of partition structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel 10, in which a coil 11 is arranged.

[0112] The coil 11 is made of titanium. The refrigerant pipe 4 is a copper pipe.

[0113] Example 16:

[0114] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0115] Heat exchanger 2 includes an upper cover 7 and a lower cover 8, which are connected by bolts. Heat exchange structure 6 includes multiple baffle structures 9 disposed within upper and lower covers 7 and 8. These baffle structures 9 divide the interior of heat exchanger 2 into multiple semi-enclosed chambers, forming S-shaped baffle channels 10, within which coils 11 are disposed.

[0116] The outer wall of the coil 11 is also provided with a threaded channel 14. The coil 11 is made of titanium. The refrigerant pipe 4 is a copper pipe.

[0117] Example 17:

[0118] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0119] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0120] The heat exchange structure 6 includes a plurality of partition structures 9 arranged in the upper cover 7 and the lower cover 8. The plurality of partition structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel 10, in which a coil 11 is arranged.

[0121] The partition structure 9 includes multiple slots 12 disposed within the upper and lower covers 7 and 8. These slots 12 are fixed to the upper and lower covers 7 and 8, alternating between the slots 12 within the upper and lower covers 7 and 8. Each slot 12 is provided with a partition 13. The coil 11 is made of titanium. The refrigerant tube 4 is a copper tube.

[0122] Example 18:

[0123] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0124] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0125] The heat exchange structure 6 includes a plurality of partition structures 9 arranged in the upper cover 7 and the lower cover 8. The plurality of partition structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel 10, in which a coil 11 is arranged.

[0126] The partition structure 9 includes a plurality of card slots 12 arranged in the upper cover body 7 and the lower cover body 8. The plurality of card slots 12 are fixed in the upper cover body 7 and the lower cover body 8. The card slots 12 in the upper cover body 7 and the lower cover body 8 are alternately arranged; a partition 13 is provided in each card slot 12.

[0127] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The ends of the coil 11 extend through the refrigerant inlet 15 and the refrigerant outlet 16, respectively, to communicate with the refrigerant pipe 4 of the refrigerator 3. The coil 11 is made of titanium. The refrigerant pipe 4 is a copper pipe.

[0128] Example 19:

[0129] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0130] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0131] The heat exchange structure 6 includes a plurality of partition structures 9 arranged in the upper cover 7 and the lower cover 8. The plurality of partition structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel 10, in which a coil 11 is arranged.

[0132] The partition structure 9 includes a plurality of card slots 12 arranged in the upper cover body 7 and the lower cover body 8. The plurality of card slots 12 are fixed in the upper cover body 7 and the lower cover body 8. The card slots 12 in the upper cover body 7 and the lower cover body 8 are alternately arranged; a partition 13 is provided in each card slot 12.

[0133] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The ends of the coil 11 extend through the refrigerant inlet 15 and the refrigerant outlet 16, respectively, to connect to the refrigerant pipe 4 of the refrigerator 3. The coil 11 and the refrigerant pipe 4 are secured together by a flared connector 19. The coil 11 is made of titanium. The refrigerant pipe 4 is a copper pipe.

[0134] Example 20:

[0135] A heat exchange device used in a vanadium flow battery energy storage system includes a heat exchanger 2, a refrigerator 3, and a vanadium electrolyte tank 1. The heat exchanger 2 is connected to the refrigerator 3 via a refrigerant pipe 4, and the heat exchanger 2 is connected to the vanadium electrolyte tank 1 via a connecting pipe 5. A heat exchange structure 6 is also provided inside the heat exchanger 2.

[0136] The heat exchanger 2 includes an upper cover 7 and a lower cover 8 , which are connected by bolts.

[0137] The heat exchange structure 6 includes a plurality of partition structures 9 arranged in the upper cover 7 and the lower cover 8. The plurality of partition structures 9 divide the interior of the heat exchanger 2 into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel 10, in which a coil 11 is arranged.

[0138] The partition structure 9 includes a plurality of card slots 12 arranged in the upper cover body 7 and the lower cover body 8. The plurality of card slots 12 are fixed in the upper cover body 7 and the lower cover body 8. The card slots 12 in the upper cover body 7 and the lower cover body 8 are alternately arranged; a partition 13 is provided in each card slot 12.

[0139] The upper cover 7 of the heat exchanger 2 is provided with a refrigerant inlet 15 and a refrigerant outlet 16. The two ends of the coil 11 pass through the refrigerant inlet 15 and the refrigerant outlet 16 respectively and communicate with the refrigerant pipe 4 of the refrigerator 3. The coil 11 and the refrigerant pipe 4 are fixed together by a flared connector 19.

[0140] The lower cover 8 is provided with an electrolyte inlet 17 and an electrolyte outlet 18 at both ends. One end of the connecting pipe 5 is connected to the vanadium electrolyte tank 1, and the other end of the connecting pipe 5 is connected to the electrolyte inlet 17. The coil 11 is made of titanium metal. The refrigerant pipe 4 is a copper pipe.

[0141] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heat exchange device for a vanadium flow battery energy storage system, characterized in that: The invention comprises a heat exchanger (2), a refrigerator (3) and a vanadium electrolyte tank (1); the heat exchanger (2) and the refrigerator (3) are connected via a refrigerant pipe (4); the heat exchanger (2) and the vanadium electrolyte tank (1) are connected via a connecting pipe (5); and a heat exchange structure (6) is further provided inside the heat exchanger (2).

2. The heat exchange device for a vanadium flow battery energy storage system according to claim 1, characterized in that: The heat exchanger (2) comprises an upper cover (7) and a lower cover (8), wherein the upper cover (7) and the lower cover (8) are connected via bolts, and the heat exchange structure (6) is arranged in a cavity formed by the upper cover (7) and the lower cover (8).

3. The heat exchange device for a vanadium flow battery energy storage system according to claim 2, characterized in that: The heat exchange structure (6) includes a plurality of partition structures (9) arranged along the flow direction of the liquid in the heat exchanger (2), and the plurality of partition structures (9) are distributed in the upper cover (7) and the lower cover (8). The plurality of partition structures (9) divide the interior of the heat exchanger (2) into a plurality of semi-enclosed chambers to form an S-shaped partition flow channel (10), and a coil (11) is provided in the S-shaped partition flow channel (10).

4. The heat exchange device for a vanadium flow battery energy storage system according to claim 3, characterized in that: The partition structure (9) comprises a plurality of slots (12) arranged in the upper cover (7) and the lower cover (8), wherein the plurality of slots (12) are fixed in the upper cover (7) and the lower cover (8), and the slots (12) in the upper cover (7) and the lower cover (8) are arranged alternately; and a partition (13) is arranged in each of the slots (12).

5. The heat exchange device for a vanadium flow battery energy storage system according to claim 3, characterized in that: A threaded channel (14) is also provided on the outer wall of the coil (11).

6. The heat exchange device for a vanadium flow battery energy storage system according to claim 4, characterized in that: A refrigerant inlet (15) and a refrigerant outlet (16) are provided on the upper cover (7) of the heat exchanger (2), and two ends of the coil (11) respectively pass through the refrigerant inlet (15) and the refrigerant outlet (16) to communicate with the refrigerant pipe (4) of the refrigerator (3).

7. The heat exchange device for a vanadium flow battery energy storage system according to claim 6, characterized in that: The coil (11) and the refrigerant pipe (4) are fixed via a flared connector (19).

8. The heat exchange device for a vanadium redox flow battery energy storage system according to claim 7, characterized in that: An electrolyte inlet (17) and an electrolyte outlet (18) are respectively provided at both ends of the lower cover (8); one end of the connecting tube (5) is connected to the vanadium electrolyte tank (1); and the other end of the connecting tube (5) is connected to the electrolyte inlet (17).

9. The heat exchange device for a vanadium redox flow battery energy storage system according to any one of claims 3 to 8, characterized in that: The coil (11) is made of titanium metal.

10. The heat exchange device for a vanadium flow battery energy storage system according to claim 9, characterized in that: The refrigerant tube (4) is a copper tube.

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