Humidifying device and battery testing equipment

Abstract

The utility model discloses a humidifying device and battery test equipment, the humidifying device comprises a humidifying tank, a heat conduction liquid delivery pipe and a spray head, the humidifying tank comprises an air inlet, an air outlet and a liquid inlet which are communicated with the internal space of the humidifying tank, the air inlet is arranged close to the bottom of the humidifying tank, and the air outlet is arranged at the top of the humidifying tank; the heat conduction liquid conveying pipe is spirally arranged on the inner wall of the humidifying tank, the heat conduction liquid conveying pipe is provided with a liquid outlet end close to the air outlet and a liquid inlet end away from the air outlet, and the liquid inlet end is connected with the liquid inlet; the spray head is arranged in the inner space of the humidifying tank close to the air outlet, and the spray head is connected to the liquid outlet end, so that the liquid with the preset temperature entering the heat conduction liquid conveying pipe through the liquid inlet can be conveyed to the spray head along the heat conduction liquid conveying pipe. According to the humidifying device provided by the utility model, the uniformity of humidity in the gas output from the gas outlet can be improved, so that the testing effect of the battery testing device is improved.

Description

Technical Field

[0001] The present application relates to the field of battery testing technology, and in particular to a humidification device and a battery testing equipment. Background Art

[0002] In the test of a battery stack such as a fuel cell, the gas entering the cathode and anode of the fuel cell stack needs to be humidified and heated.

[0003] In the related art, the humidification device includes a humidification tank, which is provided with an air outlet at the top and an air inlet at the bottom. In addition, a spray head is provided in the internal space near the top of the humidification tank. The spray head sprays liquid toward the internal space of the humidification tank to humidify and heat the gas entering the humidification tank, and the humidified and heated gas is output through the air outlet. However, since the temperature of the inner wall of the humidification tank is significantly different from the temperature of the liquid sprayed by the spray head, a part of the humidified and heated gas will condense on the inner wall of the humidification tank, thereby affecting the uniformity of humidity in the gas output from the air outlet, and further affecting the test effect of the battery testing device. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a humidifying device and a battery testing device, which can improve the uniformity of humidity in the gas output from the gas outlet, thereby improving the testing effect of the battery testing device.

[0005] In order to solve the above technical problems, in a first aspect, the utility model provides a humidifying device, the humidifying device comprising:

[0006] A humidifying tank, the humidifying tank comprising an air inlet, an air outlet and a liquid inlet connected to the internal space of the humidifying tank, the air inlet being arranged near the bottom of the humidifying tank, and the air outlet being arranged at the top of the humidifying tank;

[0007] A heat-conducting infusion tube, the heat-conducting infusion tube is spirally arranged on the inner wall of the humidifying tank, the heat-conducting infusion tube has a liquid outlet end close to the gas outlet and a liquid inlet end far away from the gas outlet, and the liquid inlet end is connected to the liquid inlet;

[0008] A nozzle is arranged in the inner space of the humidification tank near the air outlet, and the nozzle is connected to the liquid outlet so that the liquid at a preset temperature entering the thermal infusion tube through the liquid inlet can be transported to the nozzle along the thermal infusion tube.

[0009] In a possible implementation, the heat-conducting liquid infusion tube is spirally disposed on the inner wall of the humidification tank close to the air outlet, and the liquid inlet is located between the air inlet and the air outlet.

[0010] In a possible implementation, the tube wall of the heat-conducting infusion tube includes a planar portion and a curved portion that are connected to each other, the planar portion is connected to the inner wall of the humidification tank, and the curved portion is arranged toward the internal space of the humidification tank.

[0011] In a possible implementation, the width of the planar portion along a length direction perpendicular to the heat-conducting infusion tube is d1, the distance between two adjacent tube coils of the spirally arranged heat-conducting infusion tube is d2, and 1 / 3≤d1 / d2≤1 / 2.

[0012] In a possible implementation, the humidification tank further includes a liquid outlet disposed at the bottom of the humidification tank;

[0013] The humidifying device further comprises a water pump and a heater which are connected to each other, the liquid outlet is connected to the water pump, and the liquid inlet is connected to the heater.

[0014] In a possible implementation, the humidification tank includes a tank wall, the tank wall includes an inner tank wall and an outer tank wall, and a preset gap is provided between the inner tank wall and the outer tank wall.

[0015] In a possible implementation, the inner tank wall and the outer tank wall are sealed and connected, and an air extraction port is provided on the outer tank wall, and the air extraction port is used to extract air between the inner tank wall and the outer tank wall.

[0016] In a possible implementation, a thermal insulation material layer is provided between the inner tank wall and the outer tank wall.

[0017] In a possible implementation, the inner tank wall includes a first tank wall and a second tank wall connected to each other, the outer tank wall is located on the outside of the first tank wall, the heat-conducting infusion tube is spirally arranged on the first tank wall, the air outlet is located on the top of the first tank wall, the air inlet is located on the second tank wall, and the liquid outlet is arranged on the bottom of the second tank wall.

[0018] In a second aspect, the utility model further provides a battery testing device, the battery testing device comprising the humidifying device described in the first aspect.

[0019] Compared with the prior art, this application has at least the following beneficial effects:

[0020] In the present application, since the air outlet is arranged at the top of the humidification tank, the air inlet is arranged near the bottom of the humidification tank, the nozzle is arranged in the internal space of the humidification tank near the air outlet, and the nozzle is connected to the liquid outlet end, therefore, the gas entering the humidification tank from the air inlet can be heated and humidified by the liquid sprayed by the nozzle, and the heated and humidified gas will be output through the air inlet arranged at the top of the humidification tank. In addition, since the heat-conducting liquid infusion tube is spirally arranged on the inner wall of the humidification tank, and the nozzle is arranged at the liquid outlet end of the heat-conducting liquid infusion tube, therefore, when the heat-conducting liquid infusion tube can deliver a preset temperature to the nozzle When the liquid is sprayed by the nozzle, the liquid at the preset temperature can transfer part of the heat to the heat-conducting infusion tube, so that the temperature of the heat-conducting infusion tube rises. When the temperature of the heat-conducting infusion tube rises, the inner wall of the humidification tank can be heated, thereby increasing the temperature of the inner wall of the humidification tank. In this way, the temperature difference between the liquid sprayed by the nozzle and the inner wall of the humidification tank is reduced, thereby avoiding the condensation of the heated and humidified gas on the inner wall of the humidification tank during the movement to the air outlet, improving the uniformity of the humidity in the gas output from the air outlet, and then improving the test effect of the battery testing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A front view of a humidifying device provided by an embodiment of the utility model;

[0023] Figure 2 A side view of a humidifying device provided in an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of a portion of the structure of a heat-conducting infusion tube provided in an embodiment of the utility model;

[0025] Figure 4 for Figure 1 A local enlarged schematic diagram of the middle A;

[0026] Figure 5 A schematic diagram of the structure of a water pump and a heater provided in a humidification device according to an embodiment of the utility model;

[0027] Figure 6 A schematic diagram of the structure of the humidification tank provided in the embodiment of the utility model having an inner tank wall and an outer tank wall;

[0028] Figure 7 A structural schematic diagram of a humidifying tank provided in an embodiment of the utility model and provided with a thermal insulation material layer.

[0029] Description of reference numerals:

[0030] 100-humidification device; 110-humidification tank; 111-air inlet; 112-air outlet; 113-liquid inlet; 114-liquid outlet; 115-tank wall; 1151-inner tank wall; 1152-outer tank wall; 1153-insulation material layer; 115a-first tank wall; 115b-second tank wall; 116-air extraction port; 120-heat-conducting liquid infusion pipe; 121-liquid inlet end; 122-liquid outlet end; 120a flat part; 120b-arc part; 130-nozzle; 140-water pump; 150-heater. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0033] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0034] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0036] As described in the background technology of the present application, in the related technology, the humidification device includes a humidification tank, an air outlet is provided at the top of the humidification tank, and an air inlet is provided at the bottom. In addition, a spray head is provided in the internal space near the top of the humidification tank, and the spray head sprays liquid toward the internal space of the humidification tank to humidify and heat the gas entering the humidification tank, and make the humidified and heated gas output through the air outlet. However, due to the large difference between the temperature of the inner wall of the humidification tank and the temperature of the liquid sprayed by the spray head, a part of the humidified and heated gas will condense on the inner wall of the humidification tank, thereby affecting the uniformity of the humidity in the gas output from the air outlet, and further affecting the test effect of the battery testing device.

[0037] In order to solve the technical problems mentioned in the background technology, the utility model provides a humidification device and a battery testing equipment, wherein a heat-conducting infusion tube is spirally arranged on the inner wall of the humidification tank. When the heat-conducting infusion tube transports liquid of a preset temperature to the nozzle, it can transfer the temperature to the inner wall of the humidification tank, so that the temperature of the inner wall of the humidification tank is equivalent to the temperature of the liquid in the infusion tube. In this way, when the nozzle sprays liquid into the interior of the humidification tank to heat and humidify the gas entering through the air inlet, the condensation of the heated and humidified gas on the inner wall of the humidification tank can be avoided, thereby improving the uniformity of the humidity in the gas output from the outlet, thereby improving the testing effect of the battery testing device.

[0038] The present application is described in detail below through specific embodiments:

[0039] See also Figure 1 and Figure 2The embodiment of the present application provides a humidifying device 100, which includes a humidifying tank 110, a heat-conducting liquid infusion tube 120 and a nozzle 130. The humidifying tank 110 includes an air inlet 111, an air outlet 112 and a liquid inlet 113 connected to the internal space of the humidifying tank 110. The air inlet 111 is arranged near the bottom of the humidifying tank 110, and the air outlet 112 is arranged at the top of the humidifying tank 110; the heat-conducting liquid infusion tube 120 is spirally arranged on the humidifying tank 110. On the inner wall of the humidification tank 110, the heat-conducting liquid infusion tube 120 has a liquid outlet end 122 close to the gas outlet 112 and a liquid inlet end 121 away from the gas outlet 112, and the liquid inlet end 121 is connected to the liquid inlet 113; the nozzle 130 is arranged in the internal space of the humidification tank 110 close to the gas outlet 112, and the nozzle 130 is connected to the liquid outlet end 122, so that the liquid of preset temperature entering the heat-conducting liquid infusion tube 120 through the liquid inlet 113 can be transported to the nozzle 130 along the heat-conducting liquid infusion tube 120.

[0040] The shape of the humidification tank 110 is not limited, for example, the humidification tank 110 can be in a rectangular parallelepiped, cylindrical, etc. The heat-conducting infusion tube 120 has a heat-conducting function, for example, the material of the heat-conducting infusion tube 120 is a metal material, when the liquid of the preset temperature is transported in the heat-conducting infusion tube 120, the liquid of the preset temperature can transfer heat to the heat-conducting infusion tube 120, and then the heat-conducting infusion tube 120 can transfer part of the heat to the inner wall of the humidification tank 110, thereby increasing the temperature of the inner wall of the humidification tank 110 and reducing the temperature difference between the humidification tank 110 and the liquid sprayed by the nozzle 130.

[0041] In addition, the above-mentioned air inlet 111 is arranged close to the bottom of the humidification tank 110, which means that the air inlet 111 is arranged on the side wall of the humidification tank 110 and close to the bottom wall of the humidification tank 110, or the air inlet 111 is arranged on the bottom wall of the humidification tank 110.

[0042] In addition, the nozzle 130 is a nozzle 130 in the prior art, which will not be described in detail herein. For example, the nozzle 130 includes a hollow plate body and a plurality of water outlet holes disposed on the plate body.

[0043] Therefore, in this embodiment, since the air outlet 112 is arranged at the top of the humidification tank 110, the air inlet 111 is arranged near the bottom of the humidification tank 110, the nozzle 130 is arranged in the internal space of the humidification tank 110 near the air outlet 112, and the nozzle 130 is connected to the liquid outlet 122, therefore, the gas entering the humidification tank 110 from the air inlet 111 can be heated and humidified by the liquid sprayed by the nozzle 130, and the heated and humidified gas will be output through the air inlet 111 arranged at the top of the humidification tank 110, and since the heat-conducting liquid infusion tube 120 is spirally arranged on the inner wall of the humidification tank 110, and the nozzle 130 is arranged at the liquid outlet 122 of the heat-conducting liquid infusion tube 120, therefore, when the heat-conducting liquid infusion tube 120 is heated and humidified, the liquid sprayed by the nozzle 130 can be heated and humidified by the liquid sprayed by the nozzle 130. When the infusion tube 120 can transport liquid of a preset temperature to the nozzle 130, the liquid of the preset temperature can transfer part of the heat to the thermal infusion tube 120, so that the temperature of the thermal infusion tube 120 rises. When the temperature of the thermal infusion tube 120 rises, the inner wall of the humidification tank 110 can be heated, thereby increasing the temperature of the inner wall of the humidification tank 110. In this way, the temperature difference between the liquid sprayed by the nozzle 130 and the inner wall of the humidification tank 110 is reduced, thereby avoiding the condensation of the heated and humidified gas on the inner wall of the humidification tank 110 during the movement toward the outlet 112, thereby improving the uniformity of the humidity in the gas output from the outlet 112, and thereby improving the test effect of the battery testing device.

[0044] In addition, compared to setting a heating device on the outside of the humidification tank 110 to heat the tank wall 115 of the humidification tank 110 to reduce the temperature difference between the inner wall of the humidification tank 110 and the liquid sprayed by the nozzle 130, in this embodiment, the heat-conducting infusion tube 120 spirally arranged on the inner wall of the humidification tank 110 can not only heat the inner wall of the humidification tank 110, but also avoid the heat on the heat-conducting infusion tube 120 from dissipating to the external environment of the humidification tank 110, causing a large amount of heat loss in the heat-conducting infusion tube 120, thereby saving energy consumption.

[0045] In some possible embodiments, see Figure 1 The heat-conducting liquid infusion tube 120 is spirally arranged on the inner wall of the humidification tank 110 near the air outlet 112 , and the liquid inlet 113 is located between the air inlet 111 and the air outlet 112 .

[0046] In this embodiment, the heat-conducting infusion tube 120 is spirally arranged on the inner wall of the humidification tank 110 between the liquid inlet 113 and the air outlet 112. Compared with arranging the heat-conducting infusion tube 120 on the entire inner wall of the humidification tank 110, on the one hand, the waste of material of the heat-conducting infusion tube 120 is reduced. On the other hand, by spirally arranging the heat-conducting infusion tube 120 near the air outlet 112, the temperature of the liquid transported by the heat-conducting infusion tube 120 can be further guaranteed.

[0047] In some possible embodiments, see Figure 3The tube wall of the heat-conducting infusion tube 120 includes a plane portion 120 a and a curved surface portion 120 b that are connected to each other. The plane portion 120 a is connected to the inner wall of the humidification tank 110 , and the curved surface portion 120 b is arranged toward the internal space of the humidification tank 110 .

[0048] It should be understood that the above-mentioned plane portion 120a and the curved portion 120b both extend along the extension direction of the heat-conducting infusion tube 120, and the profile of the cross section of the heat-conducting infusion tube 120 is a straight portion and an arc portion, wherein the straight portion corresponds to the plane portion 120a, and the arc portion corresponds to the curved portion 120b. In addition, the curved portion 120b can be a surface formed by an arc-shaped, parabolic or other curved surface.

[0049] Since the flat portion 120a is connected to the inner wall of the humidification tank 110, the contact area between the heat-conducting infusion tube 120 and the inner wall of the humidification tank 110 is increased compared to the connection between the curved portion 120b and the inner wall of the humidification tank 110, thereby improving the heating effect of the heat-conducting infusion tube 120 on the inner wall of the humidification tank 110, thereby greatly reducing the heat loss on the inner wall of the humidification tank 110, and further improving the uniformity of humidity in the gas output from the outlet 112.

[0050] In some possible embodiments, see Figure 4 The plane portion 120a is perpendicular to the length direction of the heat-conducting liquid infusion tube 120 (i.e. Figure 4 The width of the spirally arranged heat-conducting liquid infusion tube 120 in the direction indicated by the X arrow is d1, and the distance between two adjacent tube coils is d2, where 1 / 3≤d1 / d2≤1 / 2.

[0051] If the ratio of the width of the planar portion 120a along the direction perpendicular to the length of the heat-conducting infusion tube 120 to the distance between two adjacent tube coils of the spirally arranged heat-conducting infusion tube 120 is less than 1 / 3, it means that the distance between the two adjacent tube coils of the spirally arranged heat-conducting infusion tube 120 is large, resulting in poor heating effect of the heat-conducting infusion tube 120 on the inner wall of the humidification tank 110, which is not conducive to reducing the temperature difference between the inner wall of the humidification tank 110 and the liquid sprayed by the nozzle 130. On the contrary, if the ratio of the width of the planar portion 120a along the direction perpendicular to the length of the heat-conducting infusion tube 120 to the distance between two adjacent tube coils of the spirally arranged heat-conducting infusion tube 120 is greater than 1 / 2, it means that the distance between the two adjacent tube coils of the spirally arranged heat-conducting infusion tube 120 is small, which increases the difficulty of setting the heat-conducting infusion tube 120 and also causes waste of material of the heat-conducting infusion tube 120.

[0052] Based on this, if the ratio of the width of the planar portion 120a along the length direction perpendicular to the thermal infusion tube 120 to the distance between two adjacent tube coils of the spirally arranged thermal infusion tube 120 is between 1 / 3 and 1 / 2, it can not only ensure the heating effect of the thermal infusion tube 120 on the inner wall of the humidification tank 110, but also avoid increasing the difficulty of setting the thermal infusion tube 120 and reducing the waste of material of the thermal infusion tube 120.

[0053] In addition, there is no limitation on the specific diameter of the thermal infusion tube 120 . The diameter of the thermal infusion tube 120 needs to be determined according to the flow rate of the liquid sprayed by the nozzle 130 . Those skilled in the art can make corresponding selections according to actual needs.

[0054] In some possible embodiments, see Figure 5 The humidification tank 110 also includes a liquid outlet 114 arranged at the bottom of the humidification tank 110; the humidification device 100 also includes a water pump 140 and a heater 150 connected to each other, the liquid outlet 114 is connected to the water pump 140, and the liquid inlet 113 is connected to the heater 150.

[0055] Therefore, by providing the liquid outlet 114 at the bottom of the humidification tank 110 , the liquid sprayed into the humidification tank 110 by the nozzle 130 can be output, thereby ensuring the normal humidification and heating effect of the humidification tank 110 .

[0056] In addition, since the liquid outlet 114 is connected to the water pump 140, the liquid inlet 113 is connected to the heater 150, and the water pump 140 and the heater 150 are connected to each other, the liquid output from the liquid outlet 114 can be pumped by the water pump 140 to the heater 150 for heating so that when the liquid temperature reaches a preset temperature, it is transported to the heat-conducting infusion pipe 120 through the liquid inlet 113, thereby realizing the circulation of the liquid, reducing the waste of the liquid, and improving the circulation rate of the liquid.

[0057] In addition, the water pump 140 and the heater 150 are the water pump 140 and the heater 150 in the prior art, and are not elaborated in detail herein.

[0058] In some possible embodiments, see Figure 6 The humidification tank 110 includes a tank wall 115 , and the tank wall 115 includes an inner tank wall 1151 and an outer tank wall 1152 , and a preset gap is provided between the inner tank wall 1151 and the outer tank wall 1152 .

[0059] Since there is a preset gap between the inner tank wall 1151 and the outer tank wall 1152 , an insulation space is formed between the inner tank wall 1151 and the outer tank wall 1152 , thereby reducing the heat loss on the inner tank wall 1151 and improving the uniformity of the humidity of the gas passing through the outlet 112 .

[0060] In addition, the size of the preset gap is not limited, as long as it can form a heat-insulating space between the inner tank wall 1151 and the outer tank wall 1152 to reduce the loss of heat on the inner tank wall 1151 .

[0061] In some possible embodiments, see Figure 6 The inner tank wall 1151 and the outer tank wall 1152 are sealed and connected, and an air extraction port 116 is provided on the outer tank wall 1152 , and the air extraction port 116 is used to extract the air between the inner tank wall 1151 and the outer tank wall 1152 .

[0062] There are many ways to achieve a sealed connection between the inner tank wall 1151 and the outer tank wall 1152. For example, the inner tank wall 1151 and the outer tank wall 1152 are sealed and fixed by welding, or the inner tank wall 1151 and the outer tank wall 1152 are sealed and fixed by bonding.

[0063] By providing an air extraction port 116 on the outer tank wall 1152 to extract the air between the outer tank wall 1152 and the inner tank wall 1151, the heat transfer between the inner tank wall 1151 and the outer tank wall 1152 can be isolated, thereby further reducing the heat loss on the inner tank wall 1151. In addition, by extracting the air in the space between the inner tank wall 1151 and the outer tank wall 1152 to isolate the heat transfer between the inner tank wall 1151 and the outer tank wall 1152, on the one hand, the construction difficulty can be reduced, and on the other hand, the waste of materials can be reduced.

[0064] In addition, when the air between the inner tank wall 1151 and the outer tank wall 1152 is extracted to a vacuum or near-vacuum state through the vacuum port 116, the vacuum port 116 can be sealed. In this way, the insulation space formed between the inner tank wall 1151 and the outer tank wall 1152 can be a vacuum or near-vacuum. The thermal conductivity in a vacuum or near-vacuum is poor, thereby improving the insulation effect of the insulation space formed between the inner tank wall 1151 and the outer tank wall 1152.

[0065] In some possible embodiments, see Figure 7 A thermal insulation material layer 1153 is provided between the inner tank wall 1151 and the outer tank wall 1152 .

[0066] Among them, the thermal insulation material layer 1153 can reduce or prevent the heat on the inner tank wall 1151 from being lost to the outside of the humidification tank 110. There are many kinds of thermal insulation materials, such as mineral wool, rock wool, asbestos, etc.

[0067] Therefore, by setting a thermal insulation material layer 1153 between the inner tank wall 1151 and the outer tank wall 1152, it is possible to prevent heat on the inner tank wall 1151 from being transferred to the outer tank wall 1152. In other words, the thermal insulation material layer 1153 isolates the heat transfer between the inner tank wall 1151 and the outer tank wall 1152, thereby reducing the loss of heat on the inner tank wall 1151 and improving the thermal insulation effect of the inner tank wall 1151.

[0068] In some possible embodiments, see Figure 6 The inner tank wall 1151 includes a first tank wall 115a and a second tank wall 115b connected to each other, the outer tank wall 1152 is located on the outside of the first tank wall 115a, the heat-conducting infusion tube 120 is spirally arranged on the first tank wall 115a, the air outlet 112 is located on the top of the first tank wall 115a, the air inlet 111 is located on the second tank wall 115b, and the liquid outlet 114 is arranged on the bottom of the second tank wall 115b.

[0069] Since the outer tank wall 1152 is located on the outside of the first tank wall 115a, an insulation space is formed between the first tank wall 115a and the outer tank wall 1152. Since the heat-conducting infusion tube 120 is spirally arranged on the inner tank wall 1151 of the first tank wall 115a, and the air outlet 112 is located at the top of the first tank wall 115a, and the air inlet 111 is located at the second tank wall 115b, the heat-conducting infusion tube 120 can heat the first tank wall 115a, so that the gas passing through the air inlet 111 is humidified and heated in the space corresponding to the first tank wall 115a, and then output from the humidification tank 110 through the air outlet 112. In this way, while reducing material waste, it can also ensure the heating and humidification of the gas passing through the air outlet 112 and the uniformity of the humidity of the gas passing through the air outlet 112.

[0070] An embodiment of the present application further provides a battery testing device, which includes the humidification device 100 in the above embodiment.

[0071] Among them, the humidification device 100 in the embodiment of the present application can have the same structure as any of the humidification devices 100 in the above embodiments, and can bring the same or similar beneficial effects. For details, please refer to the description in the above embodiments, and the embodiment of the present application will not be repeated here.

[0072] Therefore, since the battery testing equipment in this embodiment applies the humidifying device 100 in the above embodiment, the testing effect of the battery testing equipment is improved.

[0073] In addition, the battery testing equipment in this embodiment is mainly used for testing battery stacks such as proton exchange membrane fuel cells, methanol fuel cells, solid oxide fuel cells, molten carbonate fuel cells, phosphoric acid fuel cells, alkaline fuel cells, alkaline anion exchange membrane fuel cells, etc.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A humidifying device, characterized in that: include: A humidifying tank (110), the humidifying tank (110) comprising an air inlet (111), an air outlet (112) and a liquid inlet (113) which are communicated with the internal space of the humidifying tank (110), the air inlet (111) being arranged close to the bottom of the humidifying tank (110), and the air outlet (112) being arranged at the top of the humidifying tank (110); a heat-conducting liquid infusion tube (120), the heat-conducting liquid infusion tube (120) being spirally arranged on the inner wall of the humidifying tank (110), the heat-conducting liquid infusion tube (120) having a liquid outlet end (122) close to the gas outlet (112) and a liquid inlet end (121) far from the gas outlet (112), the liquid inlet end (121) being connected to the liquid inlet (113); A nozzle (130), the nozzle (130) being arranged in the internal space of the humidification tank (110) near the gas outlet (112), and the nozzle (130) being connected to the liquid outlet (122), so that the liquid at a preset temperature entering the heat-conducting liquid infusion pipe (120) through the liquid inlet (113) can be transported to the nozzle (130) along the heat-conducting liquid infusion pipe (120).

2. The humidifying device according to claim 1, characterized in that: The heat-conducting liquid infusion tube (120) is spirally arranged on the inner wall of the humidification tank (110) near the air outlet (112), and the liquid inlet (113) is located between the air inlet (111) and the air outlet (112).

3. The humidifying device according to claim 1, characterized in that: The tube wall of the heat-conducting infusion tube (120) comprises a planar portion (120a) and a curved portion (120b) that are connected to each other, the planar portion (120a) is connected to the inner wall of the humidification tank (110), and the curved portion (120b) is arranged toward the internal space of the humidification tank (110).

4. The humidifying device according to claim 3, characterized in that: The width of the plane portion (120a) along a length direction perpendicular to the heat-conducting infusion tube (120) is d1, and the distance between two adjacent tube coils of the spirally arranged heat-conducting infusion tube (120) is d2, and 1 / 3≤d1 / d2≤1 / 2.

5. The humidifying device according to claim 1, characterized in that: The humidification tank (110) further comprises a liquid outlet (114) arranged at the bottom of the humidification tank (110); The humidifying device further comprises a water pump (140) and a heater (150) which are connected to each other, the liquid outlet (114) is connected to the water pump (140), and the liquid inlet (113) is connected to the heater (150).

6. The humidifying device according to claim 5, characterized in that: The humidification tank (110) comprises a tank wall (115), wherein the tank wall (115) comprises an inner tank wall (1151) and an outer tank wall (1152), and a preset gap is provided between the inner tank wall (1151) and the outer tank wall (1152).

7. The humidifying device according to claim 6, characterized in that: The inner tank wall (1151) and the outer tank wall (1152) are sealed and connected, and an air extraction port (116) is provided on the outer tank wall (1152). The air extraction port (116) is used to extract air between the inner tank wall (1151) and the outer tank wall (1152).

8. The humidifying device according to claim 6, characterized in that: A thermal insulation material layer (1153) is provided between the inner tank wall (1151) and the outer tank wall (1152).

9. The humidifying device according to claim 6, characterized in that: The inner tank wall (1151) comprises a first tank wall (115a) and a second tank wall (115b) which are connected to each other; the outer tank wall (1152) is arranged on the outer side of the first tank wall (115a); the heat-conducting liquid infusion tube (120) is spirally arranged on the first tank wall (115a); the air outlet (112) is located at the top of the first tank wall (115a); the air inlet (111) is located at the second tank wall (115b); and the liquid outlet (114) is arranged at the bottom of the second tank wall (115b).

10. A battery testing device, characterized in that: It comprises the humidifying device (100) according to any one of claims 1 to 9.

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