Heat exchange and humidification device, system, vehicle and method

Abstract

The invention relates to the technical field of vehicles, in particular to a heat exchange humidification device and system, a vehicle and a method, and the device comprises a water collection chamber which is used for collecting water discharged by an electric pile of a fuel cell engine; the atomizer is connected with the water collecting chamber and used for atomizing water stored in the water collecting chamber; and the heat exchange chamber is connected with the atomizer and used for mixing atomized water sprayed by the atomizer and the boosted air to obtain humidified air and carrying out heat exchange and cooling on the boosted air. Therefore, the problems that a traditional intercooler and a traditional humidifier are large in size, high in cost and poor in cooling effect, the performance of a membrane humidifier is degraded, and consequently the service life of a fuel cell stack is shortened are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a heat exchange and humidification device, system, vehicle and method. Background Art

[0002] As a clean and efficient energy conversion device, the fuel cell stack must maintain a suitable humidity level in the proton exchange membrane during its operation to ensure effective ion conductivity and high reaction efficiency of the catalyst active layer. To achieve this, the reaction medium entering the stack needs to carry an appropriate amount of water vapor. However, in actual applications, after the air is compressed by the air compressor, not only will its pressure increase significantly, but the temperature will also rise sharply, even up to 150°C, far exceeding the ideal operating temperature of the proton exchange membrane fuel cell at around 80°C.

[0003] In order to adjust the compressed air to a temperature range suitable for the operation of the proton exchange membrane, an intercooler is usually required to reduce the temperature of the gas. The intercooler cools the overheated compressed air to a state close to or slightly higher than the ambient temperature by heat exchange, thereby ensuring that the fuel cell can operate under a relatively stable temperature condition. However, lowering the temperature alone is not enough to meet the fuel cell's requirements for intake air humidity, so a humidifier is also needed to provide a constant humidity condition for the air entering the stack. The role of the humidifier in the fuel cell system is crucial. It can not only maintain the humidity balance inside the stack, protect the membrane electrode assembly, prevent membrane cracking caused by drying or catalyst poisoning caused by overhumidification, but also effectively improve the overall performance of the fuel cell. However, existing humidification and cooling solutions, such as the combination of humidifiers and intercoolers, can meet basic needs, but there are also some problems. On the one hand, the combination of the two increases the complexity and cost of the fuel cell engine system; on the other hand, over time, the performance of the membrane humidifier may gradually decline, resulting in the inability to accurately control the humidity of the air entering the stack, thereby affecting the service life of the fuel cell stack. In addition, the intercooler itself has problems with low heat dissipation efficiency and slow cooling rate, which limit the overall performance and reliability of the fuel cell system. Summary of the invention

[0004] The present application provides a heat exchange and humidification device, system, vehicle and method to solve the problems of traditional intercoolers and humidifiers, such as large size, high cost, poor cooling effect, membrane humidifier performance degradation, and resulting in a decrease in the life of the fuel cell stack.

[0005] The first aspect of the present application provides a heat exchange and humidification device, including: a water collection chamber for collecting water discharged from a fuel cell engine stack; an atomizer connected to the water collection chamber, for atomizing the water stored in the water collection chamber; a heat exchange chamber connected to the atomizer, for mixing the atomized water sprayed by the atomizer and the pressurized air to obtain humidified air, and performing heat exchange and cooling on the pressurized air.

[0006] Optionally, at least one of a mixing flow channel, a pulsating heat pipe flow channel and a cooling liquid flow channel is provided in the heat exchange chamber, wherein the spiral mixing flow channel realizes the mixing of atomized water and pressurized air, and the pulsating heat pipe flow channel and the cooling liquid flow channel perform heat exchange and cooling on the pressurized air.

[0007] Optionally, the mixing channel is in a spiral shape.

[0008] Optionally, the heat exchange chamber includes first to sixth chamber surfaces, wherein the first to fourth chamber surfaces are arranged with pulsating heat pipe flow channels, the fifth chamber surface and the sixth chamber surface are arranged with cooling liquid flow channels, the first chamber surface and the third chamber surface are opposite surfaces, the second chamber surface and the fourth chamber surface are opposite surfaces, the fifth chamber surface and the sixth chamber surface are opposite surfaces, and the fifth chamber surface is provided with a spray inlet of an atomizer.

[0009] Optionally, an evaporator is arranged at the connection between the first chamber surface and the fourth chamber surface, and at the connection between the second chamber surface and the third chamber surface, and a condenser is arranged between the first chamber surface and the second chamber surface, and between the third chamber surface and the fourth chamber surface.

[0010] A second aspect of the present application provides a heat exchange and humidification system for a fuel cell engine, comprising: the heat exchange and humidification device of the first aspect; an air compressor for boosting the air and sending it into the heat exchange and humidification device, wherein the heat exchange and humidification device is used to send the air after heat exchange and humidification into the fuel cell engine stack, and the water discharged from the stack is sent to the water collection chamber of the heat exchange and humidification device; a first temperature sensor arranged between the heat exchange and humidification device and the air compressor; a second temperature sensor arranged between the heat exchange and humidification device and the stack; and a controller for controlling the heat exchange and humidification device according to the operating parameters of the fuel cell engine, the first temperature detected by the first temperature sensor, and the second temperature detected by the second temperature sensor.

[0011] Optionally, a stop valve is provided on the pipeline between the heat exchange and humidification device and the fuel cell stack.

[0012] A third aspect of the present application provides a vehicle, which includes the heat exchange and humidification system of the fuel cell engine of the second aspect.

[0013] The fourth aspect embodiment of the present application provides a heat exchange and humidification method for a fuel cell engine, which is used to control the heat exchange and humidification device of the first aspect, wherein the method includes the following steps: obtaining the operating parameters of the fuel cell engine, and the first temperature of the air before heat exchange and humidification and the second temperature of the air after heat exchange and humidification of the heat exchange and humidification device; controlling the heat exchange and humidification device according to the operating parameters of the fuel cell engine, the first temperature and the second temperature.

[0014] Optionally, the heat exchange and humidification device is controlled according to the operating parameters of the fuel cell engine, the first temperature and the second temperature, including: determining the air cooling temperature difference and the air heat dissipation of the heat exchange and humidification device according to the operating parameters of the fuel cell engine, the first temperature and the second temperature, generating target control parameters of the pulsating heat pipe flow channel and the coolant flow channel of the heat exchange and humidification device according to the air cooling temperature difference and the air heat dissipation, and controlling at least one of the pulsating heat pipe flow channel and the coolant flow channel based on the target control parameters; determining the inlet air flow rate and the inlet air humidity according to the operating parameters of the fuel cell engine, calculating the target atomization water volume according to the inlet air flow rate and the inlet air humidity, and controlling the atomizer of the heat exchange and humidification device according to the target atomization water volume.

[0015] Therefore, this application includes the following beneficial effects:

[0016] The heat exchange and humidification device proposed in the embodiment of the present application includes a water collection chamber for collecting water discharged from the stack of the fuel cell engine, an atomizer connected to the water collection chamber for atomizing the water in the water collection chamber, and a heat exchange chamber connected to the atomizer for mixing the atomized water sprayed by the atomizer and the pressurized air to obtain humidified air, and heat exchange and cooling the pressurized air, thereby improving the system integration, reducing the volume and mass, achieving humidification and cooling of the air entering the stack, and preventing the performance degradation of the membrane humidifier. Thus, the problems of large volume, high cost, poor cooling effect of traditional intercoolers and humidifiers, and the performance degradation of membrane humidifiers, which leads to the degradation of the life of the fuel cell stack, are solved.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 This is a block diagram of a heat exchange and humidification device provided according to an embodiment of the present application;

[0020] Figure 2 is a block diagram of a heat exchange and humidification system for a fuel cell engine according to an embodiment of the present application;

[0021] Figure 3 A structural example diagram of a heat exchange and humidification device provided in one embodiment of the present application;

[0022] Figure 4 A structural example diagram of a heat exchange and humidification system for a fuel cell engine provided in one embodiment of the present application;

[0023] Figure 5 A schematic diagram of the arrangement of a pulsating heat pipe flow channel and a coolant flow channel provided in one embodiment of the present application;

[0024] Figure 6 An example diagram of chamber surface distribution of a heat exchange chamber provided in one embodiment of the present application;

[0025] Figure 7 An example flow chart of the operation of a heat exchange and humidification system of a fuel cell engine provided in one embodiment of the present application;

[0026] Figure 8 An example diagram of the working process of a water collector provided for one embodiment of the present application;

[0027] Fig. 9 This is an example flow chart of a heat exchange and humidification method for a fuel cell engine provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0029] The heat exchange and humidification device, system, vehicle and method of the embodiment of the present application are described below with reference to the accompanying drawings. In view of the problems that the traditional intercooler and humidifier mentioned in the above background technology are large in size, high in cost, poor in cooling effect, and the performance of the membrane humidifier is attenuated, resulting in the attenuation of the life of the fuel cell stack, the present application provides a heat exchange and humidification device, which includes a water collection chamber for collecting water discharged from the fuel cell engine stack, an atomizer connected to the water collection chamber, used to atomize the water stored in the water collection chamber, and a heat exchange chamber connected to the atomizer, used to mix the atomized water sprayed by the atomizer and the pressurized air to obtain humidified air, and heat exchange and cooling the pressurized air, thereby improving the system integration, reducing the volume and mass, realizing the humidification and cooling of the air entering the stack, and preventing the performance attenuation of the membrane humidifier. As a result, the problems that the traditional intercooler and humidifier are large in size, high in cost, poor in cooling effect, and the performance of the membrane humidifier is attenuated, resulting in the attenuation of the life of the fuel cell stack, are solved.

[0030] Specifically, Figure 1 This is an example block diagram of a heat exchange and humidification device provided in an embodiment of the present application.

[0031] like Figure 1 As shown, the heat exchange humidification device 10 includes: a water collecting chamber 101 , an atomizer 102 and a heat exchange chamber 103 .

[0032] Among them, the water collection chamber 101 is used to collect water discharged from the fuel cell engine stack; the atomizer 102 connected to the water collection chamber 101 is used to atomize the water stored in the water collection chamber 101; the heat exchange chamber 103 connected to the atomizer 102 is used to mix the atomized water sprayed by the atomizer 102 and the pressurized air to obtain humidified air, and to perform heat exchange and cooling on the pressurized air.

[0033] It can be understood that in the embodiment of the present application, the atomizer 102 is connected to the water collection chamber 101, and the heat exchange chamber 103 is connected to the atomizer. The water collection chamber 101 collects water discharged from the fuel cell engine stack, and the water in the water collection chamber 101 is atomized by the atomizer 102. Finally, the heat exchange chamber 103 is used to mix the boosted air with the water atomized by the atomizer 102 to obtain humidified boosted air, and the humidified boosted air is subjected to heat exchange and cooling, so that the temperature and humidity of the humidified boosted air reach the suitable operating temperature of the proton exchange membrane fuel cell, thereby ensuring the operation and durability of the proton exchange membrane fuel cell.

[0034] In an embodiment of the present application, at least one of a mixing flow channel, a pulsating heat pipe flow channel and a cooling liquid flow channel is provided in the heat exchange chamber 103, wherein the mixing flow channel realizes the mixing of atomized water and pressurized air, and the pulsating heat pipe flow channel and the cooling liquid flow channel perform heat exchange and cooling on the pressurized air.

[0035] Among them, the temperature of the pulsating heat pipe is equivalent to a solid with a fixed thermal conductivity after working. The phase change material is extremely sensitive to temperature and can reduce the air temperature faster than heat exchange with the coolant. When the pulsating heat pipe is unstable or the heat dissipation is insufficient, coolant is passed into the coolant flow channel to cool down the pressurized gas.

[0036] It can be understood that the heat exchange chamber 103 of the embodiment of the present application includes at least one of a mixing flow channel, a pulsating heat pipe flow channel and a coolant flow channel, through which the pressurized air is quickly heat exchanged and cooled. Among them, the mixing flow channel can make the atomized water and the pressurized air fully contact and evenly mix, so that the pressurized air reaches an ideal humidity; the pulsating heat pipe flow channel and the coolant flow channel are both used for heat exchange and cooling of the pressurized air. Through the efficient heat transfer of the pulsating heat pipe temperature and the cooling of the coolant in the coolant flow channel, the temperature of the pressurized gas can be quickly reduced to an appropriate temperature.

[0037] In the embodiment of the present application, the shape of the mixing channel is spiral.

[0038] The spiral design of the spiral mixing flow channel helps to promote full contact and uniform mixing between the atomized water and the pressurized air.

[0039] It can be understood that the mixing flow channel used in the embodiment of the present application adopts a spiral flow channel, and the spiral design helps to promote sufficient contact and uniform mixing between the atomized water and the pressurized air.

[0040] In an embodiment of the present application, the heat exchange chamber 103 includes first to sixth chamber surfaces, wherein the first to fourth chamber surfaces are arranged with pulsating heat pipe flow channels, the fifth chamber surface and the sixth chamber surface are arranged with cooling liquid flow channels, the first chamber surface and the third chamber surface are opposite surfaces, the second chamber surface and the fourth chamber surface are opposite surfaces, the fifth chamber surface and the sixth chamber surface are opposite surfaces, and the fifth chamber surface is provided with a spray inlet of the atomizer 102.

[0041] The first to sixth chamber surfaces are arranged in the form of a hexahedron, the first chamber surface is opposite to the third chamber surface, the second chamber surface is opposite to the fourth chamber surface, and the fifth chamber surface is opposite to the sixth chamber surface.

[0042] It can be understood that the heat exchange chamber 103 of the embodiment of the present application includes the first to sixth chamber surfaces, the spray inlet of the atomizer 102 to spray atomized water into the heat exchange chamber 103 is arranged on the fifth chamber surface of the heat exchange chamber 103, the first to fourth chamber surfaces are arranged with pulsating heat pipe flow channels, the fifth chamber surface and the sixth chamber surface are arranged with cooling liquid flow channels, and the atomized water and the pressurized air enter the heat exchange chamber 103 and flow through each chamber surface for sufficient mixing and cooling.

[0043] In the embodiment of the present application, an evaporator is arranged at the connection between the first chamber surface and the fourth chamber surface, and at the connection between the second chamber surface and the third chamber surface, and a condenser is arranged between the first chamber surface and the second chamber surface, and between the third chamber surface and the fourth chamber surface.

[0044] Among them, evaporators are arranged at the connection between the first chamber surface and the fourth chamber surface, and at the connection between the second chamber surface and the third chamber surface, and condensers are arranged between the first chamber surface and the second chamber surface, and between the third chamber surface and the fourth chamber surface. The use of evaporators and condensers can be reduced, making the volume and weight of the device smaller, and reducing efficiency while reducing costs.

[0045] It can be understood that the embodiment of the present application adopts an arrangement method in which an evaporator is arranged at the connection between the first chamber surface and the fourth chamber surface, and at the connection between the second chamber surface and the third chamber surface of the heat exchange chamber 103, and a condenser is arranged between the first chamber surface and the second chamber surface, and between the third chamber surface and the fourth chamber surface, thereby reducing the use of evaporators and condensers, improving efficiency and reducing costs.

[0046] The heat exchange and humidification device proposed in the embodiment of the present application includes a water collection chamber for collecting water discharged from the fuel cell engine stack, an atomizer connected to the water collection chamber, used to atomize the water stored in the water collection chamber, and a heat exchange chamber connected to the atomizer, used to mix the atomized water sprayed by the atomizer and the pressurized air to obtain humidified air, and heat exchange and cooling the pressurized air, thereby improving the system integration, reducing the volume and mass, realizing humidification and cooling of the air entering the stack, and preventing the performance degradation of the membrane humidifier.

[0047] Next, the heat exchange and humidification system of the fuel cell engine proposed in accordance with the embodiment of the present application will be described with reference to the accompanying drawings.

[0048] Figure 2 It is a block diagram of a heat exchange and humidification system 20 of a fuel cell engine according to an embodiment of the present application.

[0049] like Figure 2 As shown, the heat exchange and humidification system 20 of the fuel cell engine includes: a heat exchange and humidification device 10 , an air compressor 201 , a first temperature sensor 202 , a second temperature sensor 203 and a controller 204 .

[0050] Among them, the air compressor 201 is used to pressurize the air and send it into the heat exchange and humidification device 10, wherein the heat exchange and humidification device 10 is used to send the air after heat exchange and humidification into the fuel cell engine stack 205, and the water discharged from the stack 205 is sent to the water collection chamber of the heat exchange and humidification device 10; the first temperature sensor 202 is arranged between the heat exchange and humidification device 10 and the air compressor 201; the second temperature sensor 203 is arranged between the heat exchange and humidification device 10 and the stack; the controller 204 is used to control the heat exchange and humidification device 10 according to the working parameters of the fuel cell engine, the first temperature detected by the first temperature sensor 202 and the second temperature detected by the second temperature sensor 203.

[0051] It can be understood that the embodiment of the present application includes a heat exchange and humidification device 10, an air compressor 201, a first temperature sensor 202, a second temperature sensor 203 and a controller 204. After the fuel cell is started, the air compressor 201 pressurizes the air and sends it into the heat exchange and humidification device 10. The controller 204 determines the air cooling temperature difference and the air heat dissipation according to the first temperature detected by the first temperature sensor 202, the second temperature detected by the second temperature sensor 203 and the engine operating parameters, and controls the heat exchange and humidification device 10 to humidify and cool the pressurized air. At the same time, the water discharged from the fuel cell stack 205 is sent to the water collection chamber of the heat exchange and humidification device 10 for atomizing and humidifying the pressurized air.

[0052] In the embodiment of the present application, a stop valve is provided on the pipeline between the heat exchange and humidification device 10 and the fuel cell stack 205 .

[0053] Among them, the main function of the stop valve is to cut off the gas flow when needed, and can cut off the heat exchange and humidification device 10 from transporting gas to the battery stack 205.

[0054] It can be understood that the embodiment of the present application also provides a shut-off valve on the pipeline between the heat exchange and humidification device 10 and the fuel cell stack 205, which can cut off the gas supply from the heat exchange and humidification device 10 to the fuel cell stack 205 when air intake is not required or the air intake does not meet the requirements, thereby protecting the fuel cell stack.

[0055] According to the heat exchange and humidification system of the fuel cell engine proposed in the embodiment of the present application, through the coordinated action of the heat exchange and humidification device, the air compressor, the first temperature sensor, the second temperature sensor and the controller, the heat exchange and humidification device is used to atomize the stored water in the water collection chamber, the atomized water and the pressurized air are mixed to obtain humidified air, and the pressurized air is subjected to heat exchange and cooling to a temperature and humidity suitable for the operation of the fuel cell stack, and input into the fuel cell stack, thereby improving the system integration, reducing the volume and mass, realizing humidification and cooling of the air entering the stack, and preventing the performance degradation of the membrane humidifier.

[0056] The heat exchange humidification device is further described below through a specific embodiment, as follows:

[0057] like Figure 3 The present application proposes a heat exchange humidification device 10, which is composed of a water collecting chamber 101, an atomizer 102, and a heat exchange chamber 103. The water collecting chamber 101 is provided with a liquid level sensor. There is water in the water collecting chamber 101, which can humidify the air entering the stack and continuously collect the drainage of the fuel cell stack after the engine is working. When the water level reaches the required level, the water collecting chamber 101 starts to drain water to keep the liquid level stable. Figure 4As shown, when the engine starts to work, the gas first enters the air compressor. The air after being pressurized has a high temperature and low humidity. At this time, the atomizer 102 atomizes the liquid in the water collection chamber 101 and sprays it into the heat exchange chamber 103. A spiral mixing flow channel is set in the heat exchange chamber 103 to fully mix the compressed air and the atomized water.

[0058] The heat exchange chamber 103 is provided with pulsating heat pipes and cooling liquid channels, and the arrangement is as follows: Figure 5 As shown, the distribution is as follows Figure 6 As shown, surfaces 1, 2, 3, and 4 are arranged with pulsating heat pipe channels. The connection between surfaces 1 and 4, and surfaces 2 and 3 is the pulsating heat pipe evaporation section, which is equipped with an evaporator. The connection between surfaces 1 and 2, and surfaces 3 and 4 is the pulsating heat pipe condensation section, which is equipped with a condenser. This arrangement can reduce the use of evaporators and condensers. When high-temperature air enters the heat exchange chamber, the temperature of the pulsating heat pipe is equivalent to a solid with a fixed thermal conductivity after operation. The phase change material is extremely sensitive to temperature, and the speed of reducing the air temperature is faster than heat exchange with the coolant. In addition, surfaces 5 and 6 are arranged with coolant channels. When the pulsating heat pipe is unstable or the heat dissipation is insufficient, coolant is introduced into the channel to cool the compressed gas.

[0059] This embodiment obtains the air cooling temperature difference through the first temperature sensor 202 and the fuel cell stack operating conditions, calculates the heat exchange of the phase change material, and determines the temperature of the air entering the stack through the second temperature sensor 203, performs dynamic calculation of the air heat exchange, and controls the operation of the pulsating heat pipe and the coolant.

[0060] This embodiment obtains the air flow rate and air humidity of the stack according to the stack operating conditions, calculates the amount of atomized water, and controls the air humidity of the stack. The specific operation process of this embodiment is as follows: Figure 7 As shown, the details are as follows:

[0061] Step S301: After the fuel cell is started, the air needs to be compressed by the air compressor 201 before entering the fuel cell stack 205. At this time, the gas temperature is relatively high and does not meet the requirements of temperature and humidity for entering the stack. The air cooling temperature difference and air heat dissipation are determined according to the first temperature sensor 202, the second temperature sensor 203 and the engine operating parameters.

[0062] Step S302: Selectively open the pulsating heat pipes of surface 1, surface 2, surface 3, and surface 4 according to the heat dissipation. If the pulsating heat pipe may be unstable at this time, execute step S303; at the same time, monitor the temperature of the air entering the stack to determine whether the heat dissipation of the pulsating heat pipe meets the demand. If so, execute step S304; if not, execute step S305.

[0063] Step S303: Open the coolant flow channel surfaces 5 and 6 to assist in heat dissipation.

[0064] Step S304: Turn on the corresponding pulsating heat pipe.

[0065] Step S305: Open the coolant flow channel surfaces 5 and 6 to adjust the heat dissipation to ensure that the air entering the stack temperature is within the allowable range.

[0066] Through the above steps, the air temperature and humidity can reach the requirements for stacking.

[0067] like Figure 8 As shown, it is a flow chart of controlling the operation of the water collecting chamber 101 in this embodiment, which is specifically as follows:

[0068] Step S401: Start the fuel cell engine, obtain engine operating parameters, and feed back the required flow rate and air humidity of the air entering the stack.

[0069] Step S402: Calculate the amount of atomized water according to the air flow and humidity, and atomize the liquid in the water collection chamber 101 through the atomizer 102 to ensure that the air humidity entering the stack meets the working requirements of the fuel cell stack. A liquid level sensor is provided in the water collection chamber 101, and the water level is calculated according to the liquid level to determine whether the water volume in the water collection chamber 101 meets the requirements. If the required liquid level is reached, step S403 is executed; if the required water level is not reached, step S404 is executed.

[0070] Step S403: Start drainage.

[0071] Step S404: continuously collecting stack drainage.

[0072] An embodiment of the present application also provides a vehicle, which includes the heat exchange and humidification system of the fuel cell engine mentioned above.

[0073] Fig. 9 The heat exchange and humidification method of the fuel cell engine provided in the embodiment of the present application is used to control the above-mentioned heat exchange and humidification device, such as Fig. 9 As shown, the method comprises the following steps:

[0074] In step S501: the operating parameters of the fuel cell engine, the first temperature of the air before heat exchange and humidification by the heat exchange and humidification device, and the second temperature of the air after heat exchange and humidification are obtained.

[0075] The operating parameters of the engine can be obtained by sensors; the first temperature of the air before heat exchange and humidification and the second temperature of the air after heat exchange and humidification of the heat exchange and humidification device are respectively obtained by the first temperature sensor and the second temperature sensor.

[0076] It can be understood that the embodiment of the present application obtains the operating parameters of the engine, the first temperature of the air before heat exchange and humidification by the heat exchange and humidification device, and the second temperature of the air after heat exchange and humidification by the sensor.

[0077] In step S502: the heat exchange and humidification device is controlled according to the operating parameters of the fuel cell engine, the first temperature and the second temperature.

[0078] The heat exchange and humidification device is controlled by a controller.

[0079] It can be understood that the embodiment of the present application controls the heat exchange and humidification device by analyzing the obtained operating parameters, the first temperature and the second temperature of the fuel cell engine through the controller.

[0080] In an embodiment of the present application, a heat exchange and humidification device is controlled according to the operating parameters of the fuel cell engine, a first temperature, and a second temperature, including: determining the air cooling temperature difference and the air heat dissipation of the heat exchange and humidification device according to the operating parameters of the fuel cell engine, the first temperature, and the second temperature, generating target control parameters of the pulsating heat pipe flow channel and the coolant flow channel of the heat exchange and humidification device according to the air cooling temperature difference and the air heat dissipation, and controlling at least one of the pulsating heat pipe flow channel and the coolant flow channel based on the target control parameters; determining the inlet air flow rate and the inlet air humidity according to the operating parameters of the fuel cell engine, calculating the target atomization water volume according to the inlet air flow rate and the inlet air humidity, and controlling the atomizer of the heat exchange and humidification device according to the target atomization water volume.

[0081] Among them, the air cooling temperature difference refers to the degree of reduction in air temperature after passing through the heat exchange and humidification device, that is, the difference between the first temperature and the second temperature; the air heat dissipation refers to the heat dissipation required by the air calculated based on the air cooling temperature difference; the target control parameters of the pulsating heat pipe flow channel and the coolant flow channel refer to the control values ​​set to achieve the expected heat exchange effect.

[0082] It can be understood that the embodiment of the present application first calculates the air cooling temperature difference and the air heat dissipation through the operating parameters of the fuel cell engine, the first temperature and the second temperature, and generates the target control parameters of the pulsating heat pipe flow channel and the coolant flow channel of the heat exchange and humidification device based on the two. The pulsating heat pipe flow channel and the coolant flow channel are set according to the target control parameters, so that the pressurized air flowing through can achieve the expected heat exchange effect; at the same time, the inlet air flow rate and the inlet air humidity are determined according to the operating parameters of the fuel cell engine, and the target atomized water volume is calculated from the two. The atomizer of the heat exchange and humidification device is controlled to spray atomized water according to the target atomized water volume, so that the pressurized air can reach the expected humidity. After the above two operations, the pressurized air can obtain the expected temperature and humidity, which is suitable for the operation of the fuel cell, protects the stack, and improves the heat dissipation efficiency.

[0083] According to the heat exchange and humidification method for a fuel cell engine proposed in an embodiment of the present application, the operating parameters of the fuel cell engine, the first temperature of the air before heat exchange and humidification by the heat exchange and humidification device and the second temperature of the air after heat exchange and humidification are obtained, and the heat exchange and humidification device is controlled based on the three, so that the pressurized air output by the heat exchange and humidification device has a temperature and humidity suitable for the operation of the fuel cell, thereby improving the system integration, reducing the volume and mass, realizing humidification and cooling of the air entering the stack, and preventing the performance degradation of the membrane humidifier.

[0084] It should be noted that the aforementioned explanation of the embodiment of the heat exchange and humidification system for a fuel cell engine is also applicable to the heat exchange and humidification method for a fuel cell engine of this embodiment, and will not be repeated here.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0088] It should be understood that the various parts of the present application can be implemented in hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, the steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0089] A person of ordinary skill in the art may understand that all or part of the steps carried by the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the above-mentioned program may be stored in a computer-readable storage medium, which, when executed, includes one of the steps of the method embodiment or a combination thereof.

[0090] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A heat exchange humidification device, characterized in that: include: A water collection chamber, used to collect water discharged from the fuel cell engine stack; an atomizer connected to the water collection chamber, used for atomizing the water stored in the water collection chamber; The heat exchange chamber connected to the atomizer is used to mix the atomized water sprayed by the atomizer and the pressurized air to obtain humidified air, and to perform heat exchange and temperature reduction on the pressurized air.

2. The heat exchange humidification device according to claim 1, characterized in that: At least one of a mixing channel, a pulsating heat pipe channel and a cooling liquid channel is arranged in the heat exchange chamber, wherein the mixing channel realizes mixing of atomized water and pressurized air, and the pulsating heat pipe channel and the cooling liquid channel perform heat exchange and cooling on the pressurized air.

3. The heat exchange humidification device according to claim 2, characterized in that: The mixing channel is in a spiral shape.

4. The heat exchange humidification device according to claim 2, characterized in that: The heat exchange chamber includes first to sixth chamber surfaces, wherein the pulsating heat pipe flow channels are arranged on the first to fourth chamber surfaces, the cooling liquid flow channels are arranged on the fifth and sixth chamber surfaces, the first chamber surface and the third chamber surface are opposite surfaces, the second chamber surface and the fourth chamber surface are opposite surfaces, the fifth chamber surface and the sixth chamber surface are opposite surfaces, and the fifth chamber surface is provided with a spray inlet of an atomizer.

5. The heat exchange humidification device according to claim 2, characterized in that: An evaporator is arranged at the connection between the first chamber surface and the fourth chamber surface, and at the connection between the second chamber surface and the third chamber surface, and a condenser is arranged between the first chamber surface and the second chamber surface, and between the third chamber surface and the fourth chamber surface.

6. A heat exchange and humidification system for a fuel cell engine, characterized in that: include: The heat exchange and humidification device according to any one of claims 1 to 5; An air compressor, used to pressurize the air and send it to the heat exchange and humidification device, wherein the heat exchange and humidification device is used to send the air after heat exchange and humidification to the fuel cell stack of the fuel cell engine, and the water discharged from the fuel cell stack is sent to the water collection chamber of the heat exchange and humidification device; A first temperature sensor disposed between the heat exchange and humidification device and the air compressor; A second temperature sensor disposed between the heat exchange and humidification device and the fuel cell stack; A controller is used to control the heat exchange and humidification device according to the operating parameters of the fuel cell engine, the first temperature detected by the first temperature sensor, and the second temperature detected by the second temperature sensor.

7. The heat exchange and humidification system for a fuel cell engine according to claim 6, characterized in that: A stop valve is provided on the pipeline between the heat exchange and humidification device and the fuel cell stack.

8. A vehicle, characterized in that: A heat exchange and humidification system for a fuel cell engine comprising the method of claim 6 or 7.

9. A heat exchange and humidification method for a fuel cell engine, characterized in that: The method is used to control the heat exchange and humidification device according to any one of claims 1 to 5, wherein the method comprises the following steps: Acquire the operating parameters of the fuel cell engine, as well as the first temperature of the air before heat exchange and humidification by the heat exchange and humidification device and the second temperature of the air after heat exchange and humidification; The heat exchange and humidification device is controlled according to the operating parameters of the fuel cell engine, the first temperature and the second temperature.

10. The heat exchange and humidification method for a fuel cell engine according to claim 9, characterized in that: The method of controlling the heat exchange and humidification device according to the operating parameters of the fuel cell engine, the first temperature and the second temperature includes: determining an air cooling temperature difference and an air heat dissipation amount of the heat exchange and humidification device according to the operating parameters of the fuel cell engine, the first temperature, and the second temperature, generating target control parameters of a pulsating heat pipe flow channel and a coolant flow channel of the heat exchange and humidification device according to the air cooling temperature difference and the air heat dissipation amount, and controlling at least one of the pulsating heat pipe flow channel and the coolant flow channel based on the target control parameters; The inlet air flow rate and the inlet air humidity are determined according to the operating parameters of the fuel cell engine, a target atomized water volume is calculated according to the inlet air flow rate and the inlet air humidity, and an atomizer of the heat exchange and humidification device is controlled according to the target atomized water volume.

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