Liquid flow battery air-cooled heat exchanger

Abstract

The application discloses a liquid flow battery air-cooled heat exchanger, which comprises a front end plate, a heat exchange main body, a sealing end plate and a rear end plate which are sequentially stacked along a first direction; further comprising a gas output mechanism arranged on the side of the heat exchange main body perpendicular to the first direction, a first hot fluid inlet and a first hot fluid outlet which are optionally arranged on the front end plate and / or the rear end plate; the heat exchange main body comprises at least one group of hot flow field plates and gas flow field plates which are stacked along the first direction. The liquid flow battery air-cooled heat exchanger has the following advantages: the hot flow field plates, the gas flow field plates and the sealing end plate which are stacked along the first direction are compact in structure, the inlet and outlet of the flow channel of the hot fluid are arranged on each plate body respectively, and the hot fluid and the gas can realize high-efficiency heat exchange through the stacked hot flow field plates and the gas flow field plates; the sealing structure is arranged on the hot flow field plates, the gas flow field plates and the sealing end plate respectively, so that the hot fluid and the gas can be prevented from penetrating each other or the hot fluid from leaking outward, and the reliability of heat exchange is relatively good.

Description

Technical Field

[0001] This invention relates to the field of flow battery technology, and in particular to an air-cooled heat exchanger for flow batteries. Background Technology

[0002] Flow batteries, also known as redox flow batteries, are a new type of electrochemical energy storage battery. A flow battery consists of a battery stack unit, an electrolyte, an electrolyte storage and supply unit, and a management and control unit. During energy storage, only the valence states of the active material ions change. The ions participating in the reaction on both the positive and negative electrodes can be ions of different elements or ions of the same element but with different valence states. In recent decades, flow battery technology has developed rapidly. Flow battery systems mainly include: systems composed of sodium and bromine, systems composed entirely of vanadium, and systems composed of iron and chromium. Flow batteries have wide applications in renewable energy storage, grid peak shaving, remote area and emergency power supply, electric vehicles, and backup power supplies.

[0003] Flow batteries generate heat during operation. If this heat is not dissipated effectively and promptly, the battery temperature will rise, affecting battery performance and safety. The operating temperature of a flow battery is closely related to electrochemical reactions, ionic conductivity, ion transmembrane transport rate, and electrolyte viscosity. Increasing temperature can improve reaction rates and promote reaction kinetics in electrochemical reactions. Simultaneously, high temperatures reduce electrolyte viscosity, thereby improving ion transport efficiency from the bulk to the electrode surface and lowering the concentration polarization potential. However, when the temperature exceeds a certain range, it can have significant adverse effects on the battery, such as: accelerating side reactions, leading to a decrease in coulombic efficiency; enhancing ion diffusion across the separator, exacerbating capacity decay; causing reactant precipitation in the electrolyte, resulting in channel blockage, covering electrodes and the separator, increasing delivery pump power consumption, and causing battery failure. Furthermore, persistently high temperatures can accelerate the aging of internal materials such as electrodes and separators, thus shortening the battery's lifespan. Therefore, thermal management of flow batteries is crucial for maintaining their stable operation.

[0004] Existing devices for cooling flow batteries have relatively low heat exchange efficiency and relatively poor heat exchange effect. Summary of the Invention

[0005] The purpose of this invention is to provide an air-cooled heat exchanger for a flow battery, which has a compact structure, relatively high heat exchange efficiency and effect, and relatively good heat exchange reliability.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A flow battery air-cooled heat exchanger includes a front end plate, a heat exchange body, a sealing end plate, and a rear end plate stacked sequentially along a first direction.

[0008] The flow battery air-cooled heat exchanger also includes a gas output mechanism disposed on the side of the heat exchange body perpendicular to the first direction, and a first hot fluid inlet and a first hot fluid outlet selectively disposed on the front end plate and / or the rear end plate.

[0009] The heat exchanger body includes at least one set of heat flow field plates and airflow field plates stacked along the first direction, wherein:

[0010] The heat flow field plate includes a heat plate body, a heat flow field area provided on the front side of the heat plate body for guiding the flow of hot fluid, a heat sealing structure for enclosing the heat flow field area, a second hot fluid inlet and a second hot fluid outlet opened on the heat plate body, the second hot fluid inlet and the second hot fluid outlet being located in the heat sealing structure, and the heat sealing structure circumferentially abutting against the rear side of the front end plate or the air flow field plate;

[0011] The airflow field plate includes an air plate body, a first airflow field area on the front side of the air plate body for guiding gas flow, a third hot fluid inlet and a third hot fluid outlet on the air plate body, and two sets of first sealing rings on the front side of the air plate body for respectively enclosing the third hot fluid inlet and the third hot fluid outlet. The two sets of first sealing rings are respectively abutted against the rear side of the hot plate body. A gap for gas to enter and exit is provided between the first airflow field area and the rear side of the hot plate body.

[0012] The sealing end plate includes an end plate body, an end flow field area for guiding the flow of hot fluid on the front side of the end plate body, an end sealing structure for enclosing the end flow field area, a fourth hot fluid inlet and a fourth hot fluid outlet on the end plate body, and two sets of second sealing rings on the rear side of the end plate body for respectively enclosing the fourth hot fluid inlet and the fourth hot fluid outlet. The fourth hot fluid inlet and the fourth hot fluid outlet are located in the end sealing structure. The end sealing structure abuts against the rear side of the gas plate body circumferentially, and the two sets of second sealing rings abut against the front side of the rear end plate.

[0013] The first hot fluid inlet, the second hot fluid inlet, the third hot fluid inlet, and the fourth hot fluid inlet are aligned along the first direction; the first hot fluid outlet, the second hot fluid outlet, the third hot fluid outlet, and the fourth hot fluid outlet are aligned along the first direction.

[0014] Preferably, the heat flow field area includes a hot liquid inlet guiding zone, a hot liquid inlet distribution zone, a hot fluid main flow zone, a hot liquid outlet distribution zone, and a hot liquid outlet guiding zone that are connected sequentially along the flow direction of the hot fluid. The hot liquid inlet guiding zone is connected to the second hot fluid inlet, and the hot liquid outlet guiding zone is connected to the second hot fluid outlet.

[0015] More preferably, the hot liquid inlet guiding zone, the hot fluid main flow zone, and the hot liquid outlet guiding zone are all groove structures, and the arrangement direction of each groove in the groove structure is perpendicular to the flow direction of the hot fluid; the hot liquid inlet distribution zone and the hot liquid outlet distribution zone are both convex structures, and the arrangement direction of each convex point in the convex structure is perpendicular to the flow direction of the hot fluid.

[0016] Preferably, the heat flow field plate further includes a second airflow field region disposed on the rear side of the heat plate body for guiding gas flow, and the second airflow field region and the first airflow field region are aligned along the first direction.

[0017] More preferably, the first airflow field region is a corrugated structure, or the second airflow field region is a corrugated structure.

[0018] Preferably, the end flow field region includes a hot liquid inlet guide end section, a hot liquid inlet distribution end section, a hot fluid main flow end section, a hot liquid outlet distribution end section, and a hot liquid outlet guide end section connected sequentially along the flow direction of the hot fluid. The hot liquid inlet guide end section is connected to the fourth hot fluid inlet, and the hot liquid outlet guide end section is connected to the fourth hot fluid outlet.

[0019] More preferably, the hot liquid inlet guide end section, the hot fluid main flow end section, and the hot liquid outlet guide end section are all groove structures, and the arrangement direction of each groove in the groove structure is perpendicular to the flow direction of the hot fluid; the hot liquid inlet distribution end section and the hot liquid outlet distribution end section are all convex structures, and the arrangement direction of each convex point in the convex structure is perpendicular to the flow direction of the hot fluid.

[0020] Preferably, the front end plate, the rear end plate, the heat flow field plate, the air flow field plate and the sealing end plate are respectively provided with a front positioning hole, a rear positioning hole, a heat positioning hole, a gas positioning hole and an end positioning hole aligned along the first direction. The flow battery air-cooled heat exchanger also includes a positioning element that passes through the front positioning hole, the rear positioning hole, the heat positioning hole, the gas positioning hole and the end positioning hole.

[0021] Preferably, the front end plate and the rear end plate are respectively provided with a front mounting hole and a rear mounting hole aligned along the first direction. The flow battery air-cooled heat exchanger also includes a mounting member passing through the front mounting hole and the rear mounting hole. The mounting member is located on the outside of the heat exchange body and the sealing end plate.

[0022] Preferably, the flow battery air-cooled heat exchanger further includes a first encapsulation component disposed on one side of the heat exchange body perpendicular to the first direction and used for mounting the gas output mechanism, a second encapsulation component disposed on the other side of the heat exchange body perpendicular to the first direction, and a dustproof mesh disposed on the second encapsulation component, wherein the first encapsulation component and the second encapsulation component are arranged along the gas flow direction.

[0023] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The air-cooled heat exchanger for the flow battery of the present invention has the following advantages:

[0024] The heat flow field plate, air flow field plate and sealing end plate stacked along the first direction have a compact structure. The inlet and outlet of the heat flow channel are respectively opened on each plate. The heat flow field plate and air flow field plate stacked together can achieve efficient heat exchange between the heat flow field and the gas.

[0025] Sealing structures are set on the heat flow field plate, air flow field plate and sealing end plate respectively, which can prevent the heat fluid and gas from interpenetrating or the heat fluid from leaking outward, resulting in relatively good heat exchange reliability and effectively ensuring the service life of the flow battery. Attached Figure Description

[0026] Appendix Figure 1 This is a schematic diagram of the structure of an air-cooled heat exchanger for a flow battery according to a specific embodiment of the present invention (gas output mechanism and encapsulation mechanism are omitted).

[0027] Appendix Figure 2 For the appendix Figure 1 Schematic diagram of the front-end board;

[0028] Appendix Figure 3 For the appendix Figure 1 Schematic diagram of the mid-to-rear end board;

[0029] Appendix Figure 4 For the appendix Figure 1 Schematic diagram of the structure of the intermediate heat flow field plate;

[0030] Appendix Figure 5 For the appendix Figure 1 Schematic diagram of the structure of the airflow field plate;

[0031] Appendix Figure 6 For the appendix Figure 1 Schematic diagram of the structure of the middle sealing end plate;

[0032] Appendix Figure 7 This is an exploded structural diagram of an air-cooled heat exchanger for a flow battery according to a specific embodiment of the present invention;

[0033] Appendix Figure 8 This is a schematic diagram of the assembly structure of an air-cooled heat exchanger for a flow battery according to a specific embodiment of the present invention.

[0034] Among them: 1. Front end board; 11. Front positioning hole; 12. Front mounting hole; 13. Front encapsulation hole;

[0035] 2. Heat exchanger body;

[0036] 21. Heat flow field plate; 211. Heat plate body; 212. Heat flow field zone; 2121. Heat inlet liquid guiding zone; 2122. Heat inlet liquid distribution zone; 2123. Main flow zone of hot fluid; 2124. Heat outlet liquid distribution zone; 2125. Heat outlet liquid guiding zone; 213. Heat sealing structure; 214. Second hot fluid inlet; 215. Second hot fluid outlet; 216. Second airflow field zone; 217. Heat positioning hole;

[0037] 22. Airflow field plate; 221. Air plate body; 222. First airflow field zone; 223. Third hot fluid inlet; 224. Third hot fluid outlet; 225. First sealing ring; 226. Air positioning hole;

[0038] 3. Sealing end plate; 31. End plate body; 32. End flow field region; 321. Hot liquid inlet guide end partition; 322. Hot liquid inlet distribution end partition; 323. Hot fluid main flow end partition; 324. Hot liquid outlet distribution end partition; 325. Hot liquid outlet guide end partition; 33. End sealing structure; 34. Fourth hot fluid inlet; 35. Fourth hot fluid outlet; 36. Second sealing ring; 37. End positioning hole;

[0039] 4. Rear end board; 41. Rear positioning hole; 42. Rear mounting hole; 43. Rear encapsulation hole;

[0040] 5. Gas output mechanism; 6. First hot fluid inlet; 7. First hot fluid outlet; 8. Mounting component; 9. First encapsulation component; 91. First extension; 10. Second encapsulation component; 101. Second extension; 102. Central through hole; 14. Dustproof mesh. Detailed Implementation

[0041] The technical solution of the present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0042] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0043] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0046] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0048] See Figure 1 As shown, this embodiment provides a flow battery air-cooled heat exchanger, including a front end plate 1, a heat exchange body 2, a sealing end plate 3, and a rear end plate 4 stacked sequentially along a first direction; the flow battery air-cooled heat exchanger also includes a gas output mechanism 5 disposed on the side of the heat exchange body 2 perpendicular to the first direction, a first hot fluid inlet 6 and a first hot fluid outlet 7 selectively opened on the front end plate 1 and / or the rear end plate 4.

[0049] See Figure 7-8 As shown, the flow battery air-cooled heat exchanger also includes a first encapsulation component 9 disposed on one side of the heat exchange body 2 perpendicular to the first direction for mounting the gas output mechanism 5, a second encapsulation component 10 disposed on the other side of the heat exchange body 2 perpendicular to the first direction and having a central through hole 102, and a dustproof mesh 14 disposed on the second encapsulation component 10 for sealing the central through hole 102. The first encapsulation component 9 and the second encapsulation component 10 are arranged along the gas flow direction. In this embodiment, the gas output mechanism 5 is a fan; the front end plate 1 is provided with a front encapsulation hole 13 for mounting the first encapsulation component 9 and the second encapsulation component 10; the rear end plate 4 is provided with a rear encapsulation hole 43 for mounting the first encapsulation component 9 and the second encapsulation component 10.

[0050] The heat exchange body 2 is a cuboid and has three sets of opposite sides. The first set of opposite sides is arranged along the first direction, the second set of opposite sides is perpendicular to the first direction and its arrangement direction is the gas flow direction, and the third set of opposite sides is closed by the first extension 91 and / or the second extension 101 on the side of the first encapsulation member 9 and / or the second encapsulation member 10.

[0051] In this embodiment, the first hot fluid inlet 6 is located on the front end plate 1, and the first hot fluid outlet 7 is located on the rear end plate 4; in the second embodiment, the first hot fluid inlet 6 is located on the rear end plate 4, and the first hot fluid outlet 7 is located on the front end plate 1; in the third embodiment, both the first hot fluid inlet 6 and the first hot fluid outlet 7 are located on the front end plate 1; in the fourth embodiment, both the first hot fluid inlet 6 and the first hot fluid outlet 7 are located on the rear end plate 4.

[0052] The heat exchanger 2 includes at least one set of heat flow field plates 21 and air flow field plates 22 stacked along the first direction. In this embodiment, multiple sets of heat flow field plates 21 and air flow field plates 22 are stacked along the first direction, and the two are arranged alternately.

[0053] See Figure 4 As shown, the heat flow field plate 21 includes a heat plate body 211, a heat flow field zone 212 for guiding the flow of hot fluid disposed on the front side of the heat plate body 211, a heat sealing structure 213 for enclosing the heat flow field zone 212, and a second hot fluid inlet 214 and a second hot fluid outlet 215 opened on the heat plate body 211. The second hot fluid inlet 214 and the second hot fluid outlet 215 are located in the heat sealing structure 213, which circumferentially abuts against the rear side of the front end plate 1 or the airflow field plate 22.

[0054] Through this setting:

[0055] First, the heat flow field plate 21 only allows the hot fluid to flow into the heat flow field area 212 through the second hot fluid inlet 214, and then the hot fluid flows out of the heat flow field area 212 through the second hot fluid outlet 215.

[0056] Secondly, the heat flow field plate 21 can isolate the gas and prevent it from flowing into the heat flow field area 212.

[0057] In this embodiment, see Figure 4 As shown, the hot plate body 211 is rectangular, the second hot fluid inlet 214 is located at the lower left of the hot plate body 211, and the second hot fluid outlet 215 is located at the upper right of the hot plate body 211.

[0058] The heat-sealing structure 213 is arranged around the outside of the heat flow field area 212, the second heat fluid inlet 214, and the second heat fluid outlet 215. When there is only one set of heat flow field plates 21 and air flow field plates 22, the heat-sealing structure 213 abuts against the rear side of the front end plate 1 in its circumferential direction; when there are several sets of heat flow field plates 21 and air flow field plates 22, the foremost heat-sealing structure 213 abuts against the rear side of the front end plate 1 in its circumferential direction, and the remaining heat-sealing structures 213 abut against the rear side of the air flow field plate 22 in front of them in its circumferential direction.

[0059] See Figure 4 As shown, the heat flow field region 212 includes areas along the flow direction of the heat fluid ( Figure 4 The hot liquid inlet guiding zone 2121, hot liquid inlet distribution zone 2122, hot fluid main flow zone 2123, hot liquid outlet distribution zone 2124 and hot liquid outlet guiding zone 2125 are connected sequentially from left to right. The hot liquid inlet guiding zone 2121 is connected to the second hot fluid inlet 214, and the hot liquid outlet guiding zone 2125 is connected to the second hot fluid outlet 215.

[0060] In this embodiment, the hot liquid inlet guiding zone 2121, the hot fluid main flow zone 2123, and the hot liquid outlet guiding zone 2125 are all groove structures, with the arrangement direction of each groove perpendicular to the flow direction of the hot fluid; the hot liquid inlet distribution zone 2122 and the hot liquid outlet distribution zone 2124 are both convex structures, with the arrangement direction of each convex point perpendicular to the flow direction of the hot fluid. These groove and convex structures are used to make the distribution of the hot fluid more uniform, thereby maximizing the heat exchange area and ensuring heat exchange efficiency.

[0061] See Figure 5 As shown, the airflow field plate 22 includes an air plate body 221, a first airflow field area 222 provided on the front side of the air plate body 221 for guiding gas flow, a third hot fluid inlet 223 and a third hot fluid outlet 224 provided on the air plate body 221, and two sets of first sealing rings 225 provided on the front side of the air plate body 221 for respectively enclosing the third hot fluid inlet 223 and the third hot fluid outlet 224. The two sets of first sealing rings 225 respectively abut against the rear side of the hot plate body 211. The first airflow field area 222 is recessed rearward on the front side of the air plate body 221. There is a gap between the first airflow field area 222 and the rear side of the hot plate body 211 for gas to enter and exit.

[0062] Through this setting:

[0063] First, the airflow field plate 22 only allows gas to flow through the first airflow field region 222;

[0064] Secondly, the airflow field plate 22 can isolate the hot fluid and prevent it from flowing into the airflow field area.

[0065] In this embodiment, see Figure 5 As shown, the gas plate body 221 is rectangular, the third hot fluid inlet 223 is located at the lower left of the gas plate body 221, and the third hot fluid outlet 224 is located at the upper right of the gas plate body 221.

[0066] The first airflow field region 222 is located between the two sets of first sealing rings 225, that is, the first airflow field region 222 is located outside the two sets of first sealing rings 225 respectively.

[0067] See Figure 5 As shown, the first airflow field region 222 has a corrugated structure. This corrugated structure is used to make the gas distribution more uniform, so as to maximize the heat exchange area and thus ensure the heat exchange efficiency.

[0068] See Figure 4As shown, in this embodiment, the heat flow field plate 21 further includes a second airflow field region 216 disposed on the rear side of the heat plate body 211 for guiding gas flow. The second airflow field region 216 is recessed forward on the rear side of the heat plate body 211. The second airflow field region 216 is located between the second hot fluid inlet 214 and the second hot fluid outlet 215. The second airflow field region 216 and the first airflow field region 222 are aligned along a first direction. The second airflow field region 216 has a corrugated structure, which is used to make the gas distribution more uniform, so as to maximize the heat exchange area and thus ensure the heat exchange efficiency.

[0069] See Figure 6 As shown, the sealing end plate 3 includes an end plate body 31, an end flow field region 32 for guiding the flow of hot fluid disposed on the front side of the end plate body 31, an end sealing structure 33 for enclosing the end flow field region 32, a fourth hot fluid inlet 34 and a fourth hot fluid outlet 35 opened on the end plate body 31, and two sets of second sealing rings 36 disposed on the rear side of the end plate body 31 for respectively enclosing the fourth hot fluid inlet 34 and the fourth hot fluid outlet 35. The fourth hot fluid inlet 34 and the fourth hot fluid outlet 35 are located in the end sealing structure 33, which abuts against the rear side of the gas plate body 221 circumferentially, and the two sets of second sealing rings 36 abut against the front side of the rear end plate 4 respectively.

[0070] Through this setting:

[0071] First, the sealing end plate 3 only allows the hot fluid to flow into the end flow field region 32 through the fourth hot fluid inlet 34, and then the hot fluid flows out of the end flow field region 32 through the fourth hot fluid outlet 35.

[0072] Secondly, the sealing end plate 3 can isolate the gas and prevent it from flowing into the end flow field region 32;

[0073] Finally, the sealing end plate 3 can also prevent hot fluid and gas from interpenetrating from its rear side or hot fluid from leaking outward.

[0074] In this embodiment, see Figure 6 As shown, the end plate body 31 is rectangular, the fourth hot fluid inlet 34 is located at the lower left of the end plate body 31, and the fourth hot fluid outlet 35 is located at the upper right of the end plate body 31.

[0075] Among them, the end sealing structure 33 is arranged in a ring outside the end flow field region 32, the fourth hot fluid inlet 34 and the fourth hot fluid outlet 35.

[0076] See Figure 6 As shown, the end flow field region 32 includes the flow direction of the hot fluid ( Figure 6The hot liquid inlet guide section 321, hot liquid inlet distribution section 322, hot fluid main flow section 323, hot liquid outlet distribution section 324, and hot liquid outlet guide section 325 are connected sequentially from left to right. The hot liquid inlet guide section 321 is connected to the fourth hot fluid inlet 34, and the hot liquid outlet guide section 325 is connected to the fourth hot fluid outlet 35.

[0077] In this embodiment, the hot liquid inlet guide section 321, the hot fluid main flow section 323, and the hot liquid outlet guide section 325 are all groove structures, with the arrangement direction of each groove perpendicular to the flow direction of the hot fluid; the hot liquid inlet distribution section 322 and the hot liquid outlet distribution section 324 are both convex structures, with the arrangement direction of each convex point perpendicular to the flow direction of the hot fluid. These groove and convex structures are used to make the distribution of the hot fluid more uniform, thereby maximizing the heat exchange area and ensuring heat exchange efficiency.

[0078] See Figure 1 As shown, the first hot fluid inlet 6, the second hot fluid inlet 214, the third hot fluid inlet 223, and the fourth hot fluid inlet 34 are aligned along the first direction; the first hot fluid outlet 7, the second hot fluid outlet 215, the third hot fluid outlet 224, and the fourth hot fluid outlet 35 are aligned along the first direction. This structure can ensure the uniform flow of hot fluid in each hot fluid field plate 21 as much as possible.

[0079] See Figure 1 As shown, the front end plate 1, rear end plate 4, hot flow field plate 21, air flow field plate 22, and sealing end plate 3 are respectively provided with a front positioning hole 11, a rear positioning hole 41, a hot positioning hole 217, an air positioning hole 226, and an end positioning hole 37 aligned along a first direction. The flow battery air-cooled heat exchanger also includes a positioning element (not shown in the figure) passing through the front positioning hole 11, rear positioning hole 41, hot positioning hole 217, air positioning hole 226, and end positioning hole 37. This positioning element can ensure that the front end plate 1, rear end plate 4, hot flow field plate 21, air flow field plate 22, and sealing end plate 3 are aligned along the first direction, thereby ensuring that each fluid inlet and outlet is aligned sequentially along the first direction.

[0080] See Figure 1 As shown, the front plate 1 and the rear plate 4 are respectively provided with front mounting holes 12 and rear mounting holes 42 aligned along the first direction. The flow battery air-cooled heat exchanger also includes a mounting component 8 that passes through the front mounting hole 12 and the rear mounting hole 42. The mounting component 8 is located outside the heat exchange body 2 and the sealing end plate 3 to avoid interference.

[0081] In this embodiment, the heat-sealing structure 213, the end-sealing structure 33, the first sealing ring 225, and the second sealing ring 36 are all annular grooves. The flow battery air-cooled heat exchanger also includes a filling material filled in the annular groove. The filling material is used to prevent the hot fluid and gas from interpenetrating and the hot fluid from leaking outward.

[0082] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A flow battery air-cooled heat exchanger, characterized by: The heat exchanger comprises a front end plate, a heat exchange main body, a sealing end plate and a rear end plate which are sequentially stacked along a first direction; The liquid flow battery air-cooled heat exchanger further comprises a gas output mechanism arranged on a side of the heat exchange main body perpendicular to the first direction, and a first hot fluid inlet and a first hot fluid outlet optionally arranged on the front end plate and / or the rear end plate; The heat exchange main body comprises at least one set of hot flow field plates and gas flow field plates stacked along the first direction, wherein: The hot flow field plate comprises a hot plate body, a hot flow field area for guiding the flow of hot fluid arranged on the front side of the hot plate body, a hot sealing structure for enclosing the hot flow field area, a second hot fluid inlet and a second hot fluid outlet arranged on the hot plate body, the second hot fluid inlet and the second hot fluid outlet being located in the hot sealing structure, and the hot sealing structure being circumferentially annularly arranged on the rear side of the front end plate or the gas flow field plate; The gas flow field plate comprises a gas plate body, a first gas flow field area for guiding the flow of gas arranged on the front side of the gas plate body, a third hot fluid inlet and a third hot fluid outlet arranged on the gas plate body, and two sets of first sealing rings arranged on the front side of the gas plate body for enclosing the third hot fluid inlet and the third hot fluid outlet, respectively, the first gas flow field area and the rear side of the hot plate body being separated by a space for passing through the gas; The sealing end plate comprises an end plate body, an end flow field area for guiding the flow of hot fluid arranged on the front side of the end plate body, an end sealing structure for enclosing the end flow field area, a fourth hot fluid inlet and a fourth hot fluid outlet arranged on the end plate body, and two sets of second sealing rings arranged on the rear side of the end plate body for enclosing the fourth hot fluid inlet and the fourth hot fluid outlet, respectively, the fourth hot fluid inlet and the fourth hot fluid outlet being located in the end sealing structure, the end sealing structure being circumferentially annularly arranged on the rear side of the gas plate body, and the two sets of second sealing rings being circumferentially annularly arranged on the front side of the rear end plate, respectively; The first hot fluid inlet, the second hot fluid inlet, the third hot fluid inlet and the fourth hot fluid inlet are aligned along the first direction; and the first hot fluid outlet, the second hot fluid outlet, the third hot fluid outlet and the fourth hot fluid outlet are aligned along the first direction.

2. The liquid flow battery air-cooled heat exchanger of claim 1, wherein: The hot flow field area comprises a hot liquid inlet guide flow sub-area, a hot liquid inlet flow distribution sub-area, a hot fluid main flow sub-area, a hot liquid outlet flow distribution sub-area and a hot liquid outlet guide flow sub-area which are sequentially communicated along the flow direction of the hot fluid, the hot liquid inlet guide flow sub-area and the second hot fluid inlet are communicated, and the hot liquid outlet guide flow sub-area and the second hot fluid outlet are communicated.

3. The liquid flow battery air-cooled heat exchanger of claim 2, wherein: The hot liquid inlet flow guide subarea, the hot fluid main flow subarea and the hot liquid outlet flow guide subarea are respectively groove structures, and the arrangement direction of each groove in the groove structure is perpendicular to the flow direction of the hot fluid.

4. The liquid flow battery air-cooled heat exchanger of claim 1, wherein: The hot flow field plate further comprises a second gas flow field area arranged on the rear side of the hot plate body for guiding the flow of gas, and the second gas flow field area and the first gas flow field area are aligned along the first direction.

5. The liquid flow battery air-cooled heat exchanger of claim 1 or 4, wherein: The first gas flow field area is a corrugated structure, or the second gas flow field area is a corrugated structure.

6. The liquid flow battery air-cooled heat exchanger of claim 1, wherein: The end flow field area comprises, in sequence along the flow direction of the hot fluid, a hot liquid inlet flow guide end subarea, a hot liquid inlet flow distribution end subarea, a hot fluid main flow end subarea, a hot liquid outlet flow distribution end subarea and a hot liquid outlet flow guide end subarea, the hot liquid inlet flow guide end subarea is in communication with the fourth hot fluid inlet, and the hot liquid outlet flow guide end subarea is in communication with the fourth hot fluid outlet.

7. The liquid flow battery air-cooled heat exchanger of claim 6, wherein: The hot liquid inlet flow guide end subarea, the hot fluid main flow end subarea and the hot liquid outlet flow guide end subarea are respectively groove structures, and the arrangement direction of each groove in the groove structure is perpendicular to the flow direction of the hot fluid. The hot liquid inlet flow distribution end subarea and the hot liquid outlet flow distribution end subarea are respectively convex point structures, and the arrangement direction of each convex point in the convex point structure is perpendicular to the flow direction of the hot fluid.

8. The liquid flow battery air cooled heat exchanger of claim 1, wherein: The front end plate, the rear end plate, the hot flow field plate, the gas flow field plate and the sealing end plate are respectively provided with front positioning holes, rear positioning holes, hot positioning holes, gas positioning holes and end positioning holes aligned along the first direction, and the liquid flow battery air-cooled heat exchanger further comprises positioning members penetrating the front positioning holes, the rear positioning holes, the hot positioning holes, the gas positioning holes and the end positioning holes.

9. The liquid flow battery air cooled heat exchanger of claim 1, wherein: The front end plate and the rear end plate are respectively provided with front mounting holes and rear mounting holes aligned along the first direction, and the liquid flow battery air-cooled heat exchanger further comprises mounting members penetrating the front mounting holes and the rear mounting holes, and the mounting members are located outside the heat exchange main body and the sealing end plate.

10. The liquid flow battery air cooled heat exchanger of claim 1, wherein: The liquid flow battery air-cooled heat exchanger further comprises a first packaging member arranged on one side of the heat exchange main body perpendicular to the first direction and used for mounting the gas output mechanism, a second packaging member arranged on the other side of the heat exchange main body perpendicular to the first direction, and a dustproof mesh arranged on the second packaging member, and the first packaging member and the second packaging member are arranged along the flow direction of the gas.

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