Humidification device and test system

Abstract

The present invention relates to a humidifying device, comprising a tank body, a spray assembly, a connecting pipe and a bubbling humidifying assembly. By setting the above-mentioned humidifying device, gas is input into the first humidifying chamber from the air inlet, and the spray assembly performs a first humidification treatment on the gas in the first humidifying chamber. The gas that has undergone the first humidification treatment enters the second humidifying chamber from the connecting pipe, and the gas that has entered the second humidifying chamber is discharged from the air outlet after being humidified for the second time by the bubbling humidifying assembly. After the gas is humidified twice, the humidification capacity can be effectively improved, while ensuring the stability and accuracy of the humidification. Moreover, the spray assembly and the bubbling humidifying assembly are both arranged in the tank body. Compared with separately arranging the spray assembly and the bubbling humidifying assembly and mixing the gases humidified by the two, the structure of the humidifying device is simpler and the cost is lower. The present invention also relates to a testing system.

Description

Technical Field

[0001] The present invention relates to the technical field of battery stack testing equipment, and in particular to a humidifying device and a testing system. Background Art

[0002] The reliable operation of fuel cells depends on accurate and real-time hydrothermal management. Excessively dry or excessively humid gas entering the stack can cause membrane drying and flooding within the stack, respectively, impacting fuel cell performance and lifespan. Therefore, fuel cell stack testing is essential. In a fuel cell stack test bench, a gas humidification system simulates the stack's operating environment, enabling stack testing. The gas humidification system uses bubbling, contact, direct evaporative, and combined humidification methods.

[0003] Among them, the combined humidification method is to combine the advantages of various humidification methods mentioned above, that is, to use two or more humidification methods. However, the existing combined humidification method is to mix the gases humidified by two or more humidification methods, which makes the humidification system too complicated and expensive. Summary of the Invention

[0004] Based on this, it is necessary to provide a humidification device and testing system with a simple structure and low cost to address the problems of complex systems and high costs in the above-mentioned existing combined humidification methods.

[0005] A humidifying device, comprising:

[0006] a tank body having a first humidification chamber, a second humidification chamber, an air inlet communicating with the first humidification chamber, and an air outlet communicating with the second humidification chamber, wherein the first humidification chamber is located above the second humidification chamber, the air inlet is used for inputting gas, and the air outlet is used for discharging the gas;

[0007] a spray assembly, disposed in the first humidification chamber, for spraying a humidification medium in the first humidification chamber to humidify the gas;

[0008] a connecting pipe connected to the first humidifying chamber and the second humidifying chamber, so that the gas in the first humidifying chamber humidified by the spray assembly enters the second humidifying chamber along the connecting pipe; and

[0009] The bubbling humidification component is arranged in the second humidification chamber and is used for humidifying the gas in the second humidification chamber.

[0010] By configuring the humidification device, gas is fed into the first humidification chamber through the air inlet, the spray assembly performs a primary humidification treatment on the gas in the first humidification chamber, and the gas that has undergone the primary humidification treatment enters the second humidification chamber through the connecting pipe. The gas that has entered the second humidification chamber is then humidified a second time by the bubbling humidification assembly and then discharged from the air outlet. Humidification of the gas twice effectively improves the humidification capacity while ensuring humidification stability and accuracy. Furthermore, since both the spray assembly and the bubbling humidification assembly are disposed within the tank, the humidification device has a simpler structure and lowers costs compared to configuring separate spray and bubbling humidification assemblies and mixing the gases humidified by them.

[0011] In one embodiment, the humidifying device further includes a partition assembly, which is arranged in the inner cavity of the tank body to divide the inner cavity of the tank body into the first humidifying chamber and the second humidifying chamber, and the partition assembly can allow the humidifying medium to pass into the second humidifying chamber and block the gas from passing into the second humidifying chamber.

[0012] In one embodiment, the partition assembly includes a partition and a drain valve provided on the partition, the partition being provided in the tank body to separate the inner cavity of the tank body into the first humidification chamber and the second humidification chamber, the drain valve having a connection state connecting the first humidification chamber and the second humidification chamber, and a blocking state separating the first humidification chamber and the second humidification chamber;

[0013] When the depth of the humidifying medium at the bottom of the first humidifying chamber is greater than or equal to a preset depth, the drain valve enters a connected state, and the humidifying medium at the bottom of the first humidifying chamber can enter the second humidifying chamber through the drain valve;

[0014] When the depth of the humidifying medium at the bottom of the first humidifying chamber is less than the preset depth, the drain valve enters the cut-off state.

[0015] In one embodiment, the tank body further has a water replenishing port communicating with the second humidification chamber;

[0016] The humidifying device further includes a water replenishing component, which is communicated with the water replenishing port and is used to input the humidifying medium into the second humidifying chamber.

[0017] In one embodiment, the humidifying device further includes a liquid level measuring component, which is disposed on the tank body and connected to the water replenishing component. The liquid level measuring component is used to detect the liquid level height of the humidifying medium in the second humidifying chamber, and the water replenishing component is used to input the humidifying medium into the second humidifying chamber according to the liquid level height detected by the liquid level measuring component.

[0018] In one embodiment, the tank body further has a water inlet communicating with the first humidification chamber and a water outlet communicating with the second humidification chamber, the spray assembly is communicated with the water inlet, and the water outlet is located at the bottom of the second humidification chamber for discharging the humidification medium;

[0019] The humidifying device further includes a circulation component, which is communicated with the water outlet and the water inlet and is used to input the humidifying medium discharged from the water outlet into the water inlet.

[0020] In one embodiment, the circulation component includes a water inlet pipe, a heating pipe, a cooling pipe, a water outlet pipe, a heater, a cooler and a first temperature detector;

[0021] The liquid inlet end of the water inlet pipe is connected to the water outlet, the liquid outlet end of the water outlet pipe is connected to the water inlet, the liquid inlet ends of the heating pipe and the cooling pipe are both connected to the liquid outlet end of the water inlet pipe, and the liquid outlet ends of the heating pipe and the cooling pipe are both connected to the liquid inlet end of the water outlet pipe;

[0022] The heater is arranged in the heating pipe to heat the humidifying medium in the heating pipe, the cooler is arranged in the cooling pipe to cool the humidifying medium in the cooling pipe, and the first temperature detector is arranged in the water outlet pipe to detect the temperature of the humidifying medium in the water outlet pipe.

[0023] In one embodiment, the humidifying device further comprises a gas delivery assembly, wherein the gas delivery assembly comprises a gas delivery pipeline, a dry gas delivery pipeline, an air inlet pipeline, a wet gas delivery pipeline and an air outlet pipeline;

[0024] The gas transmission pipeline is used to communicate with the gas supply device, the air inlet ends of the dry gas transmission pipeline and the air inlet pipeline are both connected to the end of the gas transmission pipeline away from the gas supply device, the air outlet end of the air inlet pipeline is connected to the air inlet, the air inlet end of the wet gas transmission pipeline is connected to the air outlet, and the air outlet ends of the dry gas transmission pipeline and the wet gas transmission pipeline are both connected to the air inlet end of the air outlet pipeline.

[0025] In one embodiment, the humidifying device further includes a first gas distributor and a second gas distributor;

[0026] The first gas distributor is disposed in the first humidification chamber and is in communication with the air inlet, and is used to evenly disperse the gas input from the air inlet into the first humidification chamber;

[0027] The second gas distributor is disposed in the second humidifying chamber and is in communication with one end of the communicating tube extending into the second humidifying chamber, and is used for uniformly dispersing the gas inputted from the communicating tube into the second humidifying chamber.

[0028] In one embodiment, the air inlet is located at the bottom of the first humidification chamber, the air outlet is located at the top of the second humidification chamber, one end of the connecting tube extends into the top of the first humidification chamber, and the other end extends into the bottom of the second humidification chamber, and the bubbling humidification component is located between the air outlet and the end of the connecting tube extending into the second humidification chamber, so that the gas entering the second humidification chamber from the connecting tube is discharged from the air outlet after passing through the bubbling humidification component.

[0029] A testing system comprises the humidifying device described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a schematic diagram of the principle of a humidifying device provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0032] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to 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 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 should not be understood as limiting the present invention.

[0034] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] like Figure 1 As shown, a humidifying device 100 provided in one embodiment of the present invention includes a tank body 11 , a spray assembly 12 , a connecting pipe 13 and a bubbling humidifying assembly 14 .

[0039] The tank body 11 has a first humidifying chamber 111, a second humidifying chamber 112, an air inlet connected to the first humidifying chamber 111, and an air outlet connected to the second humidifying chamber 112. The first humidifying chamber 111 is located above the second humidifying chamber 112. The air inlet is used to input gas, and the air outlet is used to discharge gas.

[0040] The spray assembly 12 is disposed in the first humidifying chamber 111 and is used to spray the humidifying medium in the first humidifying chamber 111 to humidify the gas.

[0041] The connecting pipe 13 is connected to the first humidifying chamber 111 and the second humidifying chamber 112 , so that the gas in the first humidifying chamber 111 humidified by the spray assembly 12 enters the second humidifying chamber 112 along the connecting pipe 13 .

[0042] The bubbling humidification component 14 is disposed in the second humidification chamber 112 and is used to humidify the gas in the second humidification chamber 112 .

[0043] By setting up the above-mentioned humidification device, during the humidification process, the tank body 11 is placed vertically, the first humidification chamber 111 is located above the second humidification chamber 112, the gas is input into the first humidification chamber 111 from the air inlet, the spray component 12 performs a first humidification treatment on the gas in the first humidification chamber 111, and the gas that has undergone the first humidification treatment enters the second humidification chamber 112 from the connecting pipe 13. The gas that has entered the second humidification chamber 112 is discharged from the air outlet after being humidified for the second time by the bubbling humidification component 14. After the gas is humidified twice, the humidification capacity can be effectively improved while ensuring the stability and accuracy of the humidification. Moreover, the spray component 12 and the bubbling humidification component 14 are both arranged in the tank body 11. Compared with separately setting up the spray component 12 and the bubbling humidification component 14 and mixing the gases humidified by the two, the structure of the humidification device is simpler and the cost is lower.

[0044] Furthermore, the spray assembly 12 can humidify large gas flows, thereby rapidly humidifying the gas, while the bubbling humidification assembly 14 humidifies the gas with greater accuracy and stability. Therefore, after humidification by the spray assembly 12, the bubbling humidification assembly 14 can adjust the humidity of the humidified gas, thereby improving the accuracy and stability of humidification.

[0045] It should be noted that the gas in the above embodiments is usually hydrogen and the humidifying medium is deionized water. Of course, in other embodiments, other gases and humidifying liquids can also be used as long as the two do not react with each other and do not affect the components being tested.

[0046] In some embodiments, the humidifying device also includes a gas delivery component 15, which includes a gas delivery pipeline 151, a dry gas delivery pipeline 152, an air inlet pipeline 153, a wet gas delivery pipeline 154 and an air outlet pipeline 155. The gas delivery pipeline 151 is used to connect with the gas supply device, and the air inlet ends of the dry gas delivery pipeline 152 and the air inlet pipeline 153 are both connected to the end of the gas delivery pipeline 151 away from the gas supply device, the air outlet end of the air inlet pipeline 153 is connected to the air inlet, the air inlet end of the wet gas delivery pipeline 154 is connected to the air outlet, and the air outlet ends of the dry gas delivery pipeline 152 and the wet gas delivery pipeline 154 are both connected to the air inlet end of the air outlet pipeline 155.

[0047] In this way, the gas is transported from the gas delivery pipe 151, part of it is transported to the gas outlet pipe 155 through the dry gas delivery pipe 152, and the other part enters the tank body 11 through the air inlet pipe 153, and is humidified in the first humidification chamber 111 and the second humidification chamber 112 in turn to form wet gas, and the wet gas is transported to the gas outlet pipe 155 through the wet gas delivery pipe 154. The wet gas is mixed with the dry gas and output to the fuel cell stack to adjust the humidity of the gas input into the fuel cell stack.

[0048] Furthermore, the gas delivery component 15 also includes a first gas valve 156 and a second gas valve 157. The first gas valve 156 is arranged in the dry gas delivery pipeline 152 to control the on-off and opening of the dry gas delivery pipeline 152. The second gas valve 157 is arranged in the air intake pipeline 153 to control the on-off and opening of the air intake pipeline 153.

[0049] When shutting down or starting up, the first gas valve 156 and the second gas valve 157 can be used to control the on / off of the dry gas delivery pipeline 152 and the wet gas delivery pipeline 154 respectively. When it is necessary to adjust the mixing ratio of the dry gas and the wet gas in the outlet pipeline 155, the opening of the first gas valve 156 and the second gas valve 157 can be adjusted.

[0050] In actual application, the gas delivery component 15 also includes a first one-way valve 158 and a second one-way valve 159. The first one-way valve 158 is arranged in the dry gas delivery pipeline 152 to ensure that the gas is delivered from the dry gas delivery pipeline 152 to the outlet pipeline 155. The second one-way valve 159 is arranged in the air inlet pipeline 153 to ensure that the gas is delivered from the air inlet pipeline 153 to the tank body 11. The first one-way valve 158 and the second one-way valve 159 are both used to prevent the gas from flowing in the opposite direction.

[0051] In some embodiments, the tank body 11 is generally cylindrical and positioned vertically. The first humidification chamber 111 is located at the upper portion of the tank body 11, while the second humidification chamber 112 is located at the lower portion of the tank body 11. Furthermore, the air inlet is located at the bottom of the first humidification chamber 111, while the air outlet is located at the top of the second humidification chamber 112. In practical applications, both the air inlet and the air outlet are located on the sidewall of the tank body 11.

[0052] In some embodiments, the humidifying device also includes a partition component 16, which is arranged in the inner cavity of the tank body 11 to divide the inner cavity of the tank body 11 into a first humidifying chamber 111 and a second humidifying chamber 112, and can allow the humidifying medium to pass into the second humidifying chamber 112 and block the gas from passing into the second humidifying chamber 112.

[0053] Furthermore, the partition assembly 16 includes a partition 161, which is disposed in the tank body 11 to separate the inner cavity of the tank body 11 into a first humidification chamber 111 and a second humidification chamber 112. In practical applications, the partition 161 is disposed in a horizontal direction.

[0054] It can be understood that the partition 161 divides the inner cavity of the tank body 11 into a first humidification chamber 111 and a second humidification chamber 112. The bottom end of the first humidification chamber 111 and the top end of the second humidification chamber 112 are both partitions 161, and the air inlet and the air outlet are both opened in the tank body 11, so the air inlet and the air outlet are opened on the side walls of the first humidification chamber 111 and the second humidification chamber 112.

[0055] In addition, the connecting pipe 13 passes through the partition 161 , and the position where the connecting pipe 13 passes through the partition 161 is sealed to the partition 161 , so that the gas in the first humidification chamber 111 enters the second humidification chamber 112 through the connecting pipe 13 .

[0056] In some embodiments, the partition assembly 16 further includes a drain valve 162 , which is disposed on the partition 161 , and has a connected state connecting the first humidification chamber 111 and the second humidification chamber 112 , and a cutoff state separating the first humidification chamber 111 and the second humidification chamber 112 .

[0057] Among them, when the depth of the humidifying medium at the bottom of the first humidifying chamber 111 is greater than or equal to the preset depth, the drain valve 162 enters the connected state, and the humidifying medium at the bottom of the first humidifying chamber 111 can enter the second humidifying chamber 112 through the drain valve 162; when the depth of the humidifying medium at the bottom of the first humidifying chamber 111 is less than the preset depth, the drain valve 162 enters the cut-off state.

[0058] That is, when the humidifying medium at the bottom of the first humidifying chamber 111 accumulates to a certain depth, it will be discharged into the second humidifying chamber 112. When the humidifying medium at the bottom of the first humidifying chamber 111 is less, the first humidifying chamber 111 and the second humidifying chamber 112 will not be connected. In this way, the humidifying medium forms a liquid sealing layer at the bottom of the first humidifying chamber 111, preventing the first humidifying chamber 111 and the second humidifying chamber 112 from directly communicating with each other. This prevents the gas entering the first humidifying chamber 111 from directly entering the second humidifying chamber 112 without undergoing the humidification treatment in the first humidifying chamber 111, thereby ensuring the humidification effect of the gas.

[0059] Specifically, the drain valve 162 is an automatic drain valve, and the partition assembly 16 includes a plurality of drain valves 162 .

[0060] In other embodiments, the drain valve 162 in the above embodiment is replaced with a drain pipe, which is arranged on the partition 161. The liquid inlet end of the drain pipe is connected to the first humidification chamber 111, and the liquid outlet end of the drain pipe is connected to the second humidification chamber 112, and the height of the liquid inlet end of the drain pipe is lower than the height of the liquid outlet end of the drain pipe.

[0061] In this way, according to the principle of communicating vessels, it can be determined that the setting of the drain pipe also has the effect of liquid sealing. Only when the accumulation depth of the humidifying medium is higher than the height of the liquid outlet end of the drain pipe can the humidifying medium be ejected from the drain pipe into the second humidifying chamber 112.

[0062] Of course, the drain pipe can also be in other forms. For example, the drain pipe is a U-shaped pipe, and the liquid inlet and outlet ends of the drain pipe are the top. When the height of the liquid outlet end of the drain pipe is at least higher than the height of the bottom of the drain pipe by at least the diameter of the drain pipe, regardless of the height between the liquid inlet and outlet ends of the drain pipe, a liquid sealing layer can be formed in the drain pipe.

[0063] In addition, the drainage pipe may not be provided, and a drainage channel may be directly opened on the partition 161, and the form of the drainage channel may be the same as the above-mentioned drainage pipe, or the drainage channel may extend in the vertical direction, and the diameter of the opening connecting the drainage channel and the second humidification chamber 112 may be smaller than the diameter of other positions, and a sealing ball may be placed in the drainage channel.

[0064] When there is no humidifying medium or there is less humidifying medium in the drainage channel, the sealing ball can seal the opening connecting the drainage channel and the second humidifying chamber 112, thereby preventing gas from entering the second humidifying chamber 112 through the drainage channel; when there is more humidifying medium in the drainage channel, the sealing ball floats up due to buoyancy, and the humidifying medium can flow from the drainage channel to the second humidifying chamber 112.

[0065] It should be noted that when the partition 161 is used in conjunction with the liquid drain pipe, a certain amount of humidifying medium needs to be sprayed into the first humidifying chamber 111 first to form a liquid sealing layer in advance.

[0066] When the drainage channel is used in conjunction with the sealing ball, a baffle can also be set at the bottom of the first humidification chamber 111. The baffle does not seal the drainage channel, but is only used to limit the drainage of the drainage channel during the floating process of the sealing ball. When the sealing ball floats up and contacts the baffle, the sealing ball will no longer float up, and neither the sealing ball nor the baffle will seal the drainage channel.

[0067] In addition, in the above embodiments, the partition component 16 can connect the first humidification chamber 111 and the second humidification chamber 112. In other embodiments, the partition component 16 can only be used to separate the first humidification chamber 111 and the second humidification chamber 112, and the humidification medium accumulated at the bottom of the first humidification chamber 111 can be discharged by opening other openings, which is not limited here.

[0068] In some embodiments, one end of the connecting tube 13 extends into the top of the first humidification chamber 111 , and the other end extends into the bottom of the second humidification chamber 112 . The bubbling humidification component 14 is located between the air outlet and one end of the connecting tube 13 extending into the second humidification chamber 112 .

[0069] The gas input into the first humidification chamber 111 from the air inlet first enters the bottom of the first humidification chamber 111. In the process of the gas flowing from the bottom to the connecting pipe 13 at the top, the spray component 12 can humidify the gas. The gas entering the second humidification chamber 112 from the other end of the connecting pipe 13 first enters the bottom of the second humidification chamber 112, and in the process of flowing to the air outlet at the top, the gas will pass through the bubbling humidification component 14 and undergo a second humidification.

[0070] In this way, the humidification effect can be improved. At the same time, by adopting the method of spraying humidification first and then bubbling humidification, large-flow gas humidification can be carried out, and the humidification accuracy and stability are high.

[0071] In actual application, the air inlet is opened on one side of the side wall of the first humidification chamber 111, and the part of the connecting pipe 13 extending into the first humidification chamber 111 is arranged on the other side of the side wall of the first humidification chamber 111, so that the gas flow path is longer, thereby further improving the humidification effect.

[0072] In some embodiments, the humidification device further includes a spray filler 17 disposed within the first humidification chamber 111 and located between the air inlet and the end of the connecting tube 13 extending into the first humidification chamber 111. The humidifying medium sprayed by the spray assembly 12 wets the spray filler 17. Gas entering the air inlet passes through the spray filler 17 as it flows toward the connecting tube 13. The wetted spray filler 17 humidifies the passing gas. Specifically, the spray filler 17 is made of polytetrafluoroethylene.

[0073] It should be noted that by arranging the spray filler 17 in the first humidification chamber 111, the flow rate of the gas can be slowed down and the gas can be distributed more evenly in the first humidification chamber 111. The gas flowing out of the spray filler 17 can be directly sprayed and humidified. At the same time, the gas can also be humidified when passing through the wetted spray filler 17. Therefore, it can ensure that the gas is humidified quickly and fully, and ensure the humidification effect of large-flow gas.

[0074] In some embodiments, the humidification device further includes a first gas distributor 18, which is disposed within the first humidification chamber 111 and communicates with the air inlet for uniformly dispersing the gas input from the air inlet within the first humidification chamber 111. In practical applications, the first gas distributor 18 is disposed below the spray filler 17.

[0075] It should be noted that openings are provided above and below the first gas distributor 18, and there is a gap between the first gas distributor 18 and the inner wall of the first humidification chamber 111. The opening of the first gas distributor 18 and the gap between the first gas distributor 18 and the inner wall can allow the humidification medium sprayed into the first humidification chamber 111 to pass through. The humidification medium passing through the first gas distributor 18 accumulates at the partition assembly 16, thereby forming a liquid sealing layer on the partition 161, preventing the gas from flowing directly into the second humidification chamber 112.

[0076] In some embodiments, the humidifying device also includes a second gas distributor 19, which is disposed in the second humidifying chamber 112 and is connected to one end of the connecting tube 13 extending into the second humidifying chamber 112, and is used to evenly disperse the gas input by the connecting tube 13 in the second humidifying chamber 112.

[0077] In actual application, the second gas distributor 19 is disposed below the bubbling humidification assembly 14. It is understandable that the gas ultimately flows upward in the first humidification chamber 111 and the second humidification chamber 112. Therefore, the first gas distributor 18 and the second gas distributor 19 are respectively located at the bottom of the first humidification chamber 111 and the second humidification chamber 112, while the gas outlet ends in the first humidification chamber 111 and the second humidification chamber 112 are both located at the top, thereby extending the gas flow path and improving the humidification effect.

[0078] In some embodiments, the tank body 11 also has a water replenishing port connected to the second humidification chamber 112, and the humidification device also includes a water replenishing component 20, which is connected to the water replenishing port and is used to input humidification medium into the second humidification chamber 112, thereby providing humidification medium for the bubbling humidification component 14 in the second humidification chamber 112 to ensure the humidification effect of the bubbling humidification component 14.

[0079] Furthermore, the water replenishment component 20 includes a water replenishment pipe 201 and a water replenishment valve 202 arranged on the water replenishment pipe 201. One end of the water replenishment pipe 201 is used to connect with the water supply device, and the other end is connected with the water replenishment port. The water replenishment valve 202 is arranged on the water replenishment pipe 201 and is used to control the on-off and opening degree of the water replenishment pipe 201.

[0080] In actual application, the water replenishment component 20 also includes a third one-way valve 203, which is arranged in the water replenishment pipe 201 to ensure that the humidification medium in the water replenishment pipe 201 flows into the second humidification chamber 112 to prevent the humidification medium from flowing in the reverse direction.

[0081] In some embodiments, the humidifying device also includes a liquid level measuring component 21, which is arranged on the tank body 11. The liquid level measuring component 21 is used to detect the liquid level height of the humidifying medium in the second humidifying chamber 112, and the water replenishing component 20 is used to input the humidifying medium into the second humidifying chamber 112 according to the liquid level height detected by the liquid level measuring component 21.

[0082] It should be noted that the liquid level of the humidifying medium in the second humidifying chamber 112 usually has a maximum height and a minimum height, and the two heights are determined according to actual needs. Therefore, when the liquid level of the humidifying medium is lower than the minimum height, the water replenishing component 20 starts to input the humidifying medium into the second humidifying chamber 112. When the liquid level of the humidifying medium is greater than or equal to the maximum height, the water replenishing component 20 stops inputting the humidifying medium.

[0083] In actual applications, the liquid level measurement component 21 includes a high liquid level detector 211 and a low liquid level detector 212. The high liquid level detector 211 and the low liquid level detector 212 correspond to the above-mentioned maximum height and minimum height settings, and are both connected to the water replenishment valve 202 to be triggered when the height of the humidifying medium in the second humidification chamber 112 reaches the corresponding height, thereby opening or closing the water replenishment valve 202.

[0084] It should be noted that the humidifying device also has a control mechanism, and the above-mentioned detector and control valve are electrically connected to the control mechanism, which is used to realize the automatic operation of the humidifying device. In addition, the mechanisms in subsequent embodiments can also be electrically connected to the control mechanism to realize automatic operation.

[0085] In some embodiments, the tank body 11 also has a water inlet connected to the first humidification chamber 111 and a water outlet connected to the second humidification chamber 112. The spray assembly 12 is connected to the water inlet, and the water outlet is located at the bottom end of the second humidification chamber 112 for discharging the humidification medium.

[0086] Furthermore, the water inlet is located at the top of the first humidification chamber 111, and the spray assembly 12 includes a connecting pipe and a water distributor. The connecting pipe is connected between the water inlet and the water distributor. The water distributor is arranged at the top of the first humidification chamber 111 and is located above the connecting pipe. The water distributor is used to disperse the humidification medium into the first humidification chamber 111 and disperse it on the spray filler 17.

[0087] In actual application, the humidifying device further includes a circulation component 22 , which is connected to the water outlet and the water inlet, and is used to input the humidifying medium discharged from the water outlet into the water inlet, and further input into the spray component 12 .

[0088] In combination with the above embodiments, it can be seen that the humidifying medium sprayed by the spray component 12 can be discharged to the second humidifying chamber 112 through the drain valve 162, and the humidifying medium in the second humidifying chamber 112 can be transported back to the spray component 12 via the circulation component 22, forming a circulation route, saving resources and reducing costs.

[0089] In addition, since the humidifying medium is used to humidify the gas, the humidified gas will be discharged, so the humidifying medium will still decrease. When the humidifying medium is reduced to a liquid level height in the second humidifying chamber 112 lower than the minimum height, the water replenishing component 20 will input the humidifying medium into the second humidifying chamber 112, thereby ensuring that the amount of humidifying medium in the tank body 11 and the circulation component 22 meets the humidification requirements.

[0090] In other embodiments, the tank body 11 may also have a water inlet opening connected to the second humidification chamber 112, which is also connected to the circulation component 22. The circulation component 22 circulates the humidification medium discharged from the water outlet back to the first humidification chamber 111 and the second humidification chamber 112.

[0091] In some embodiments, the circulation component 22 includes an inlet pipe 221, a heating pipe 222, a cooling pipe 223 and an outlet pipe 224. The liquid inlet end of the inlet pipe 221 is connected to the water outlet, the liquid outlet end of the outlet pipe 224 is connected to the water inlet, the liquid inlet ends of the heating pipe 222 and the cooling pipe 223 are both connected to the liquid outlet end of the inlet pipe 221, and the liquid outlet ends of the heating pipe 222 and the cooling pipe 223 are both connected to the liquid inlet end of the outlet pipe 224.

[0092] Furthermore, the circulation component 22 also includes a heater 225 and a cooler 226. The heater 225 is arranged in the heating pipe 222 for heating the humidifying medium in the heating pipe 222. The cooler 226 is arranged in the cooling pipe 223 for cooling the humidifying medium in the cooling pipe 223.

[0093] In this way, the humidifying medium with a higher temperature heated by the heater 225 and the humidifying medium with a lower temperature cooled by the cooler 226 are mixed in the water outlet pipe 224, and the temperature of the humidifying medium in the heating pipe 222 and the cooling pipe 223 can be adjusted, so that the temperature of the mixed humidifying medium in the water outlet pipe 224 is adjustable.

[0094] In practice, the circulation assembly 22 further includes a cooling valve 227 disposed in the cooling pipe 223 for controlling the on / off and opening degree of the cooling pipe 223. Thus, by controlling the on / off and opening degree of the cooling valve 227, the amount of the lower-temperature humidifying medium flowing from the cooling pipe 223 into the outlet pipe 224 can be controlled, thereby regulating the temperature of the humidifying medium in the outlet pipe 224.

[0095] It should be noted that the humidifying medium humidifies the gas, and the temperature of the humidifying medium will also affect the temperature of the gas. The humidity and temperature of the gas input into the fuel cell stack will both affect the test effect, so it is necessary to ensure that the humidity and temperature of the gas output from the gas outlet are maintained at the same time. However, during the circulation of the humidifying medium, the heat of the humidifying medium will be lost, so the humidifying medium needs to be heated by the heater 225. At the same time, in order to avoid the humidifying medium temperature being too high, which will cause the gas temperature to be too high, the temperature of the humidifying medium needs to be adjusted before the humidifying medium is input into the spray assembly 12.

[0096] The specific operation is that when the temperature of the humidifying medium in the water outlet pipe 224 is too high, the cooling valve 227 is opened, and the humidifying medium with a lower temperature enters the water outlet pipe 224 and mixes with the humidifying medium with a higher temperature. After mixing, the temperature of the humidifying medium decreases until the requirements are met; and when the temperature of the humidifying medium in the water outlet pipe 224 is too low, the opening of the cooling valve 227 is reduced or disconnected, the input amount of the humidifying medium with a lower temperature is reduced, and the temperature of the humidifying medium in the water outlet pipe 224 increases until the requirements are met.

[0097] Therefore, it is understood that the temperature of the humidifying medium heated by the heater 225 is generally higher than the desired temperature. It should also be noted that, under the condition of a constant flow rate in the heating pipe 222, the effect of the heater 225 on the heating medium is the same, that is, the temperature of the humidifying medium output from the heating pipe 222 to the water outlet pipe 224 is the same.

[0098] Specifically, the cooler 226 is a heat exchanger, and heat exchange can be performed by inputting cooling water into the heat exchanger and the humidifying medium flowing through the heat exchanger.

[0099] In some embodiments, the circulation component 22 further includes a first temperature detector 228, which is disposed in the water outlet pipe 224 and is used to detect the temperature of the humidifying medium in the water outlet pipe 224. The cooling valve 227 is adjusted to be on or off and to adjust its opening degree based on the detection result of the first temperature detector 228. Specifically, the first temperature detector 228 is a temperature sensor.

[0100] In some embodiments, the circulation component 22 further includes a circulation pump 229 , which is disposed in the water inlet pipe 221 and is used to guide the humidifying medium discharged from the water outlet to flow toward the water inlet.

[0101] In some embodiments, the humidifying device further includes a first pressure detector 23, which is disposed in the tank body 11 and is used to detect the pressure in the first humidifying chamber 111. The pressure in the first humidifying chamber 111 is related to the flow rate of the gas, thereby obtaining the flow rate of the gas.

[0102] In some embodiments, the humidifying device further includes a second temperature detector 24, which is used to detect the temperature in the second humidifying chamber 112. The second temperature detector 24 detects the temperature in the second humidifying chamber 112, thereby obtaining the temperature of the gas.

[0103] Furthermore, the humidifying device also includes a second pressure detector 25, which is arranged on the tank body 11 and is used to detect the pressure in the second humidifying chamber 112, so as to facilitate the operator to comprehensively judge the gas pressure in the first humidifying chamber 111 and the second humidifying chamber 112 based on the pressure values ​​detected by the first pressure detector 23 and the second pressure detector 25, so as to avoid the pressure exceeding the threshold.

[0104] The first pressure detector 23 and the second pressure detector 25 are both pressure sensors, and the second temperature detector 24 is also a temperature sensor.

[0105] Based on the above-mentioned humidifying device, the present invention further provides a testing system for simulating the environment of a fuel cell stack and testing the fuel cell stack. The testing system includes the above-mentioned humidifying device.

[0106] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A humidifying device, characterized in that: include: A tank body having a first humidification chamber, a second humidification chamber, an air inlet communicating with the first humidification chamber, and an air outlet communicating with the second humidification chamber, wherein the air inlet is located at the bottom of the first humidification chamber and the air outlet is located at the top of the second humidification chamber, the air inlet is used to input gas, and the air outlet is used to discharge the gas; a partition assembly disposed in the inner cavity of the tank body to divide the inner cavity of the tank body into the first humidification chamber and the second humidification chamber, and the partition assembly is capable of allowing the humidification medium to pass into the second humidification chamber and blocking the gas from passing into the second humidification chamber; a spray assembly, disposed in the first humidifying chamber, for spraying the humidifying medium in the first humidifying chamber to humidify the gas; a connecting pipe connected to the first humidification chamber and the second humidification chamber, one end of the connecting pipe extending into the top of the first humidification chamber and the other end extending into the bottom of the second humidification chamber, so that the gas in the first humidification chamber humidified by the spray assembly enters the second humidification chamber along the connecting pipe; and a bubbling humidification component, disposed in the second humidification chamber, between the gas outlet and one end of the communicating tube extending into the second humidification chamber, for humidifying the gas that has been humidified in the first humidification chamber and then enters the second humidification chamber, so that the gas that enters the second humidification chamber from the communicating tube passes through the bubbling humidification component and is discharged from the gas outlet; In which, the partition assembly includes a partition and a drain valve arranged on the partition, the partition is arranged in the tank body to separate the inner cavity of the tank body into the first humidification chamber and the second humidification chamber, and the drain valve has a connecting state connecting the first humidification chamber and the second humidification chamber, and a cut-off state separating the first humidification chamber and the second humidification chamber.

2. The humidifying device according to claim 1, characterized in that When the depth of the humidifying medium at the bottom of the first humidifying chamber is greater than or equal to a preset depth, the drain valve enters a connected state, and the humidifying medium at the bottom of the first humidifying chamber can enter the second humidifying chamber through the drain valve; When the depth of the humidifying medium at the bottom of the first humidifying chamber is less than the preset depth, the drain valve enters the cut-off state.

3. The humidifying device according to claim 1, characterized in that The tank body also has a water replenishing port communicating with the second humidifying chamber; The humidifying device further includes a water replenishing component, which is communicated with the water replenishing port and is used to input the humidifying medium into the second humidifying chamber.

4. The humidifying device according to claim 3, characterized in that The humidifying device also includes a liquid level measuring component, which is arranged on the tank body and connected to the water replenishing component. The liquid level measuring component is used to detect the liquid level height of the humidifying medium in the second humidifying chamber. The water replenishing component is used to input the humidifying medium into the second humidifying chamber according to the liquid level height detected by the liquid level measuring component.

5. The humidifying device according to claim 1, characterized in that The tank body further has a water inlet communicating with the first humidification chamber and a water outlet communicating with the second humidification chamber, the spray assembly is connected to the water inlet, and the water outlet is located at the bottom of the second humidification chamber for discharging the humidification medium; The humidifying device further includes a circulation component, which is communicated with the water outlet and the water inlet and is used to input the humidifying medium discharged from the water outlet into the water inlet.

6. The humidifying device according to claim 5, characterized in that The circulation component includes a water inlet pipe, a heating pipe, a cooling pipe, a water outlet pipe, a heater, a cooler and a first temperature detector; The liquid inlet end of the water inlet pipe is connected to the water outlet, the liquid outlet end of the water outlet pipe is connected to the water inlet, the liquid inlet ends of the heating pipe and the cooling pipe are both connected to the liquid outlet end of the water inlet pipe, and the liquid outlet ends of the heating pipe and the cooling pipe are both connected to the liquid inlet end of the water outlet pipe; The heater is arranged in the heating pipe to heat the humidifying medium in the heating pipe, the cooler is arranged in the cooling pipe to cool the humidifying medium in the cooling pipe, and the first temperature detector is arranged in the water outlet pipe to detect the temperature of the humidifying medium in the water outlet pipe.

7. The humidifying device according to claim 1, characterized in that The humidifying device further comprises a gas delivery assembly, wherein the gas delivery assembly comprises a gas delivery pipeline, a dry gas delivery pipeline, an air inlet pipeline, a wet gas delivery pipeline and an air outlet pipeline; The gas transmission pipeline is used to communicate with the gas supply device, the air inlet ends of the dry gas transmission pipeline and the air inlet pipeline are both connected to the end of the gas transmission pipeline away from the gas supply device, the air outlet end of the air inlet pipeline is connected to the air inlet, the air inlet end of the wet gas transmission pipeline is connected to the air outlet, and the air outlet ends of the dry gas transmission pipeline and the wet gas transmission pipeline are both connected to the air inlet end of the air outlet pipeline.

8. The humidifying device according to claim 1, characterized in that The humidifying device further comprises a first gas distributor and a second gas distributor; The first gas distributor is disposed in the first humidification chamber and is in communication with the air inlet, and is used to evenly disperse the gas input from the air inlet into the first humidification chamber; The second gas distributor is disposed in the second humidifying chamber and is in communication with one end of the communicating tube extending into the second humidifying chamber, and is used for uniformly dispersing the gas inputted from the communicating tube into the second humidifying chamber.

9. A testing system, characterized in that: The invention comprises a humidifying device according to any one of claims 1 to 8.

Images