Air cooling heat exchanger for flow battery

Abstract

The air-cooling 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 gas output mechanism is arranged on the side, perpendicular to the first direction, of the heat exchange body, and the first hot fluid inlet and the first hot fluid outlet are selectively formed in the front end plate and / or the rear end plate. The heat exchange body comprises at least one set of heat flow field plates and airflow field plates which are stacked in the first direction. The flow battery air cooling heat exchanger has the following advantages that the heat flow field plates, the airflow field plates and the sealing end plates which are stacked in the first direction are compact in structure, flow channel inlets and outlets of hot fluid are formed in the plate bodies respectively, and efficient heat exchange between the hot fluid and gas can be achieved through the heat flow field plates and the airflow field plates which are stacked; the sealing structures are arranged on the heat flow field plate, the air flow field plate and the sealing end plates respectively, interpenetration between heat fluid and air or outward leakage of the heat fluid can be avoided, and the heat exchange reliability is relatively good.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid flow batteries, and in particular to an air-cooled heat exchanger for a liquid flow battery. Background Art

[0002] Liquid flow battery, also known as redox flow battery, is a new type of electrochemical energy storage battery. Liquid flow battery consists of battery stack unit, electrolyte, electrolyte storage and supply unit, and management control unit. During the energy storage process, only the valence state of the active material ions changes. The ions participating in the reaction on both sides of 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, liquid flow battery technology has developed rapidly. The main liquid flow battery systems include: battery system composed of sodium sulfide and bromine, battery system composed of all-vanadium materials, battery system composed of iron and chromium, etc. Liquid flow batteries are widely used in many fields such as renewable energy storage, power grid peak regulation, remote areas and emergency power supply, electric vehicles, backup power supplies, etc.

[0003] The operation of flow batteries generates heat. If the heat cannot be dissipated in time and effectively, the battery temperature will rise, thus affecting the battery performance and safety. The operating temperature of flow batteries is closely related to electrochemical reactions, ionic conductivity, ion transmembrane transport rate, and electrolyte viscosity. Increasing the temperature can increase the reaction rate and promote the reaction kinetics in electrochemical reactions. At the same time, high temperature will also reduce the viscosity of the electrolyte, thereby improving the transmission efficiency of ions from the main body to the electrode surface and reducing the concentration polarization potential. However, when the temperature exceeds a certain range, it will have a greater adverse effect on the battery, such as: accelerating side reactions, resulting in a decrease in Coulomb efficiency; enhancing the diffusion capacity of ions through the diaphragm, aggravating capacity decay; causing the precipitation of reactants in the electrolyte, causing blockage of the flow channel, covering the electrodes and diaphragms, increasing the power consumption of the delivery pump, and causing battery failure. In addition, continued high temperatures will also accelerate the aging of materials such as electrodes and diaphragms inside the battery, thereby shortening the service life of the battery. Therefore, thermal management of flow batteries is of great significance to maintaining their stable operation.

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

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

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A liquid flow battery air-cooled heat exchanger comprises a front end plate, a heat exchange body, a sealing end plate and a rear end plate which are sequentially stacked along a first direction;

[0008] The liquid flow battery air-cooled heat exchanger further includes a gas output mechanism disposed on one 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 exchange body comprises at least one set of heat flow field plates and air flow field plates stacked along the first direction, wherein:

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

[0011] The airflow field plate comprises an air plate body, a first airflow field area arranged on the front side of the air plate body for guiding the flow of gas, a third hot fluid inlet and a third hot fluid outlet opened on the air plate body, and two groups of first sealing rings arranged 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 groups of the first sealing rings are respectively abutted against the rear side of the hot plate body, and a gap for passing gas in and out is arranged between the first airflow field area and the rear side of the hot plate body;

[0012] The sealing end plate comprises an end plate body, an end flow field area for guiding the flow of a thermal fluid and an end sealing structure for enclosing the end flow field area, a fourth thermal fluid inlet and a fourth thermal fluid outlet provided on the end plate body, and two groups of second sealing rings for respectively enclosing the fourth thermal fluid inlet and the fourth thermal fluid outlet provided on the rear side of the end plate body, the fourth thermal fluid inlet and the fourth thermal fluid outlet are located in the end sealing structure, the end sealing structure is circumferentially abutted against the rear side of the gas plate body, and the two groups of the second sealing rings are respectively abutted against the front side of the rear end plate;

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

[0014] Preferably, the heat flow field area includes a hot liquid inlet diversion partition, a hot liquid inlet distribution partition, a hot fluid mainstream partition, a hot liquid outlet distribution partition and a hot liquid outlet diversion partition which are connected in sequence along the flow direction of the hot fluid, the hot liquid inlet diversion partition is connected to the second hot fluid inlet, and the hot liquid outlet diversion partition is connected to the second hot fluid outlet.

[0015] More preferably, the hot liquid inlet diversion partition, the hot fluid mainstream partition and the hot liquid outlet diversion partition 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 distribution partition and the hot liquid outlet distribution partition 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.

[0016] Preferably, the heat flow field plate further comprises a second air flow field area arranged on the rear side of the heat plate body for guiding the flow of gas, and the second air flow field area is aligned with the first air flow field area 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 area includes a hot liquid inlet guide end partition, a hot liquid inlet distribution end partition, a hot fluid mainstream end partition, a hot liquid outlet distribution end partition and a hot liquid outlet guide end partition which are sequentially connected along the flow direction of the hot fluid, the hot liquid inlet guide end partition is connected to the fourth hot fluid inlet, and the hot liquid outlet guide end partition is connected to the fourth hot fluid outlet.

[0019] More preferably, the hot liquid inlet guide end partition, the hot fluid mainstream end partition and the hot liquid outlet guide end partition 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 distribution end partition and the hot liquid outlet distribution end partition 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.

[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 front positioning holes, rear positioning holes, heat positioning holes, gas positioning holes and end positioning holes aligned along the first direction, and the liquid flow battery air-cooled heat exchanger also includes positioning parts passing through the front positioning holes, rear positioning holes, heat positioning holes, gas positioning holes and end positioning holes.

[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, and the liquid flow battery air-cooled heat exchanger also includes a mounting member passing through the front mounting hole and the rear mounting hole, and the mounting member is located on the outside of the heat exchange body and the sealing end plate.

[0022] Preferably, the liquid flow battery air-cooled heat exchanger also includes a first package arranged on one side of the heat exchange body perpendicular to the first direction and used to install the gas output mechanism, a second package arranged on the other side of the heat exchange body perpendicular to the first direction, and a dust-proof mesh arranged on the second package, and the first package and the second package are arranged along the flow direction of the gas.

[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 of the liquid flow battery of the present invention has the following advantages:

[0024] The heat flow field plates, air flow field plates and sealing end plates stacked in the first direction have a compact structure, and the inlet and outlet of the flow channel of the hot fluid are respectively opened on each plate body. The stacked heat flow field plates and air flow field plates can realize efficient heat exchange between the hot fluid and the gas;

[0025] Sealing structures are respectively arranged on the heat flow field plate, the air flow field plate and the sealing end plate, which can prevent the thermal fluid and the gas from interpenetrating or the thermal fluid from leaking outward. The reliability of heat exchange is relatively good, which effectively ensures the service life of the liquid flow battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 Schematic diagram of the structure of an air-cooled heat exchanger for a flow battery according to a specific embodiment of the present invention (the gas output mechanism and the packaging mechanism are omitted);

[0027] Attached Figure 2 For attachment Figure 1 Schematic diagram of the structure of the front and middle boards;

[0028] Attached Figure 3 For attachment Figure 1 Structural diagram of the middle and rear end panels;

[0029] Attached Figure 4 For attachment Figure 1 Schematic diagram of the structure of the medium heat flow field plate;

[0030] Attached Figure 5 For attachment Figure 1 Schematic diagram of the structure of the mid-flow field plate;

[0031] Attached Figure 6 For attachment Figure 1 Schematic diagram of the structure of the middle flow field plate;

[0032] Attached Figure 7 It is a schematic diagram of the explosion structure of an air-cooled heat exchanger for a flow battery according to a specific embodiment of the present invention;

[0033] Attached Figure 8 It 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 plate; 11. front positioning hole; 12. front mounting hole; 13. front packaging hole;

[0035] 2. Heat exchanger body;

[0036] 21. heat flow field plate; 211. heat plate body; 212. heat flow field area; 2121. hot inlet liquid diversion partition; 2122. hot inlet liquid distribution partition; 2123. hot fluid mainstream partition; 2124. hot outlet liquid distribution partition; 2125. hot outlet liquid diversion partition; 213. heat sealing structure; 214. second hot fluid inlet; 215. second hot fluid outlet; 216. second air flow field area; 217. heat positioning hole;

[0037] 22, air flow field plate; 221, air plate body; 222, first air flow field area; 223, third thermal fluid inlet; 224, third thermal fluid outlet; 225, first sealing ring; 226, air positioning hole;

[0038] 3. Sealing end plate; 31. End plate body; 32. End flow field area; 321. Hot inlet guide end partition; 322. Hot inlet distribution end partition; 323. Hot fluid main flow end partition; 324. Hot outlet distribution end partition; 325. Hot 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 plate; 41. rear positioning hole; 42. rear mounting hole; 43. rear packaging hole;

[0040] 5. Gas output mechanism; 6. First hot fluid inlet; 7. First hot fluid outlet; 8. Mounting member; 9. First packaging member; 91. First extension portion; 10. Second packaging member; 101. Second extension portion; 102. Center through hole; 11. Dust-proof mesh. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described below in conjunction with specific embodiments and drawings.

[0042] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0043] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

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

[0045] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0046] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

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

[0049] See also Figure 7-8 As shown, the air-cooled heat exchanger for liquid flow batteries also includes a first package 9 disposed on one side of the heat exchange body 2 perpendicular to the first direction and used to install the gas output mechanism 5, a second package 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 11 disposed on the second package 10 and used to cover the central through hole 102. The first package 9 and the second package 10 are arranged along the flow direction of the gas. In this embodiment, the gas output mechanism 5 is a fan; the front package hole 13 for installing the first package 9 and the second package 10 is provided on the front plate 1; and the rear package hole 43 for installing the first package 9 and the second package 10 is provided on the rear plate 4.

[0050] The heat exchange body 2 is a rectangular parallelepiped and has three groups of relative side surfaces, wherein the first group of relative side surfaces are arranged along a first direction, the second group of relative side surfaces are perpendicular to the first direction and arranged in the direction of gas flow, and the third group of relative side surfaces are closed by the first extension portion 91 and / or the second extension portion 101 on the side of the first package 9 and / or the second package 10.

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

[0052] The heat exchange body 2 comprises at least one group of heat flow field plates 21 and air flow field plates 22 stacked along a first direction. In this embodiment, a plurality of groups of heat flow field plates 21 and air flow field plates 22 are stacked along the first direction and are arranged alternately.

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

[0054] With this setup:

[0055] First, the heat flow field plate 21 only allows the thermal fluid flowing through to flow into the heat flow field region 212 through the second thermal fluid inlet 214, and then the thermal fluid flows out of the heat flow field region 212 through the second thermal 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 heat plate body 211 is rectangular, the second heat fluid inlet 214 is located at the lower left of the heat plate body 211 , and the second heat fluid outlet 215 is located at the upper right of the heat plate body 211 .

[0058] The heat sealing structure 213 is disposed 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 is circumferentially abutted against the rear side of the front end plate 1; when there are several sets of heat flow field plates 21 and air flow field plates 22, the frontmost heat sealing structure 213 is circumferentially abutted against the rear side of the front end plate 1, and the remaining heat sealing structures 213 are circumferentially abutted against the rear side of the air flow field plate 22 in front of it.

[0059] See also Figure 4 As shown, the thermal flow field region 212 includes a thermal fluid flow direction ( Figure 4 The hot inlet diversion partition 2121, the hot inlet distribution partition 2122, the hot fluid mainstream partition 2123, the hot outlet distribution partition 2124 and the hot outlet diversion partition 2125 are connected in sequence (from left to right in the figure), the hot inlet diversion partition 2121 is connected to the second hot fluid inlet 214, and the hot outlet diversion partition 2125 is connected to the second hot fluid outlet 215.

[0060] In this embodiment, the hot inlet diversion partition 2121, the hot fluid mainstream partition 2123 and the hot outlet diversion partition 2125 are 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 inlet distribution partition 2122 and the hot outlet distribution partition 2124 are 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. The groove structure and the convex point structure are respectively used to make the hot fluid distribution tend to be uniform, so as to maximize the heat exchange area and thus ensure the heat exchange efficiency.

[0061] See also Figure 5 As shown, the airflow field plate 22 includes an air plate body 221, a first airflow field area 222 arranged on the front side of the air plate body 221 for guiding the flow of gas, a third hot fluid inlet 223 and a third hot fluid outlet 224 opened on the air plate body 221, and two groups of first sealing rings 225 arranged 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 groups of first sealing rings 225 are respectively ringed on the rear side of the heat plate body 211, the first airflow field area 222 is recessed backward on the front side of the air plate body 211, and a gap for passing gas in and out is provided between the first airflow field area 222 and the rear side of the heat plate body 211.

[0062] With this setup:

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

[0064] Secondly, the air flow field plate 22 can isolate the hot fluid and prevent it from flowing into the air flow 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 area 222 is located between the two groups of first sealing rings 225 , that is, the first airflow field area 222 is located outside the two groups of first sealing rings 225 .

[0067] See also Figure 5 As shown, the first air flow field area 222 is a corrugated structure, which is used to make the gas distribution tend to be uniform, so as to maximize the heat exchange area and thus ensure the heat exchange efficiency.

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

[0069] See also Figure 6 As shown, the sealing end plate 3 includes an end plate body 31, an end flow field area 32 for guiding the flow of the thermal fluid provided on the front side of the end plate body 31 and an end sealing structure 33 for enclosing the end flow field area 32, a fourth thermal fluid inlet 34 and a fourth thermal fluid outlet 35 provided on the end plate body 31, and two groups of second sealing rings 36 provided on the rear side of the end plate body 31 for respectively enclosing the fourth thermal fluid inlet 34 and the fourth thermal fluid outlet 35. The fourth thermal fluid inlet 34 and the fourth thermal fluid outlet 35 are located in the end sealing structure 33, and the end sealing structure 33 is abutted against the rear side of the gas plate body 221 along its circumferential direction, and the two groups of second sealing rings 36 are respectively abutted against the front side of the rear end plate 4.

[0070] With this setup:

[0071] First, the sealed end plate 3 only allows the thermal fluid flowing through to flow into the end flow field area 32 through the fourth thermal fluid inlet 34, and then the thermal fluid flows out of the end flow field area 32 through the fourth thermal fluid outlet 35;

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

[0073] Finally, the sealing end plate 3 can also prevent the hot fluid and gas from interpenetrating from the rear side thereof or the 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] The end sealing structure 33 is arranged around the outer sides of the end flow field area 32 , the fourth hot fluid inlet 34 and the fourth hot fluid outlet 35 .

[0076] See also Figure 6 As shown, the end flow field area 32 includes a flow direction of the hot fluid ( Figure 6The hot liquid inlet guide end partition 321, the hot liquid inlet distribution end partition 322, the hot fluid mainstream end partition 323, the hot liquid outlet distribution end partition 324 and the hot liquid outlet guide end partition 325 are connected in sequence (from left to right in the figure), the hot liquid inlet guide end partition 321 is connected to the fourth hot fluid inlet 34, and the hot liquid outlet guide end partition 325 is connected to the fourth hot fluid outlet 35.

[0077] In this embodiment, the hot liquid inlet guide end partition 321, the hot fluid main flow end partition 323 and the hot liquid outlet guide end partition 325 are 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 partition 322 and the hot liquid outlet distribution end partition 324 are 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. The groove structure and the convex point structure are respectively used to make the hot fluid distribution tend to be uniform, so as to maximize the heat exchange area and thus ensure the heat exchange efficiency.

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

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

[0080] See also Figure 1 As shown, the front plate 1 and the rear plate 4 are respectively provided with a front mounting hole 12 and a rear mounting hole 42 aligned along a first direction. The liquid flow battery air-cooled heat exchanger also includes a mounting member 8 penetrating the front mounting hole 12 and the rear mounting hole 42. The mounting member 8 is located on the outside of 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 respectively annular grooves, and the liquid flow battery air-cooled heat exchanger also includes a filling material filled in the annular groove, which is used to prevent the interpenetration between the hot fluid and the gas and the leakage of the hot fluid to the outside.

[0082] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid flow battery air-cooled heat exchanger, characterized in that: It includes a front end plate, a heat exchange 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 includes a gas output mechanism disposed on one 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; The heat exchange body comprises at least one set of heat flow field plates and air flow field plates stacked along the first direction, wherein: The heat flow field plate comprises a heat plate body, a heat flow field area for guiding the flow of a heat fluid and a heat sealing structure for enclosing the heat flow field area, a second heat fluid inlet and a second heat fluid outlet provided on the heat plate body, the second heat fluid inlet and the second heat fluid outlet are located in the heat sealing structure, and the heat sealing structure is circumferentially abutted against the front end plate or the rear side of the air flow field plate; The airflow field plate comprises an air plate body, a first airflow field area arranged on the front side of the air plate body for guiding the flow of gas, a third hot fluid inlet and a third hot fluid outlet opened on the air plate body, and two groups of first sealing rings arranged 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 groups of the first sealing rings are respectively abutted against the rear side of the hot plate body, and a gap for passing gas in and out is arranged between the first airflow field area and the rear side of the hot plate body; The sealing end plate comprises an end plate body, an end flow field area for guiding the flow of a thermal fluid and an end sealing structure for enclosing the end flow field area, a fourth thermal fluid inlet and a fourth thermal fluid outlet provided on the end plate body, and two groups of second sealing rings for respectively enclosing the fourth thermal fluid inlet and the fourth thermal fluid outlet provided on the rear side of the end plate body, the fourth thermal fluid inlet and the fourth thermal fluid outlet are located in the end sealing structure, the end sealing structure is circumferentially abutted against the rear side of the gas plate body, and the two groups of the second sealing rings are respectively abutted against the front side of the rear end plate; The first thermal fluid inlet, the second thermal fluid inlet, the third thermal fluid inlet and the fourth thermal fluid inlet are aligned along the first direction; the first thermal fluid outlet, the second thermal fluid outlet, the third thermal fluid outlet and the fourth thermal fluid outlet are aligned along the first direction.

2. The air-cooled heat exchanger for a flow battery according to claim 1, characterized in that: The heat flow field area includes a hot liquid inlet diversion partition, a hot liquid inlet distribution partition, a hot fluid mainstream partition, a hot liquid outlet distribution partition and a hot liquid outlet diversion partition which are sequentially connected along the flow direction of the hot fluid, the hot liquid inlet diversion partition is connected to the second hot fluid inlet, and the hot liquid outlet diversion partition is connected to the second hot fluid outlet.

3. The air-cooled heat exchanger for a liquid flow battery according to claim 2, characterized in that: The hot liquid inlet diversion partition, the hot fluid mainstream partition and the hot liquid outlet diversion partition 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 distribution partition and the hot liquid outlet distribution partition 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.

4. The air-cooled heat exchanger for a flow battery according to claim 1, characterized in that: The heat flow field plate further includes a second air flow field area disposed on the rear side of the heat plate body for guiding the flow of gas, and the second air flow field area is aligned with the first air flow field area along the first direction.

5. The air-cooled heat exchanger for a flow battery according to claim 1 or 4, characterized in that: The first airflow field region is a corrugated structure, or the second airflow field region is a corrugated structure.

6. The air-cooled heat exchanger for a liquid flow battery according to claim 1, characterized in that: The end flow field area includes a hot liquid inlet guide end partition, a hot liquid inlet distribution end partition, a hot fluid mainstream end partition, a hot liquid outlet distribution end partition and a hot liquid outlet guide end partition which are sequentially connected along the flow direction of the hot fluid, the hot liquid inlet guide end partition is connected to the fourth hot fluid inlet, and the hot liquid outlet guide end partition is connected to the fourth hot fluid outlet.

7. The air-cooled heat exchanger for a flow battery according to claim 6, characterized in that: The hot liquid inlet guide end partition, the hot fluid main flow end partition and the hot liquid outlet guide end partition 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 distribution end partition and the hot liquid outlet distribution end partition 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 air-cooled heat exchanger for a liquid flow battery according to claim 1, characterized in that: 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 front positioning holes, rear positioning holes, heat positioning holes, gas positioning holes and end positioning holes aligned along the first direction, and the liquid flow battery air-cooled heat exchanger also includes positioning parts penetrating the front positioning holes, rear positioning holes, heat positioning holes, gas positioning holes and end positioning holes.

9. The air-cooled heat exchanger for a liquid flow battery according to claim 1, characterized in that: 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, and the liquid flow battery air-cooled heat exchanger also includes a mounting member penetrating the front mounting hole and the rear mounting hole, and the mounting member is located on the outside of the heat exchange body and the sealing end plate.

10. The air-cooled heat exchanger for a liquid flow battery according to claim 1, characterized in that: The air-cooled heat exchanger for the liquid flow battery also includes a first package arranged on one side of the heat exchange body perpendicular to the first direction and used to install the gas output mechanism, a second package arranged on the other side of the heat exchange body perpendicular to the first direction, and a dust-proof mesh arranged on the second package. The first package and the second package are arranged along the flow direction of the gas.

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