Heat exchange device and fuel cell

Abstract

The utility model provides a heat exchange device and a fuel cell, the fuel cell comprises an electric pile and an air compressor, the heat exchange device comprises a shell and a first heat dissipation part located in the shell, the first heat dissipation part comprises a first refrigerant channel, a cooling airflow channel, a compressed air channel and a plurality of heat exchange pieces, the compressed air channel and the cooling airflow channel are sequentially arranged in the first direction, and the compressed air channel is located at an outlet, close to the first refrigerant channel, of the cooling airflow channel; the multiple heat exchange pieces are arranged at intervals to form multiple intervals, refrigerant cavities forming a first refrigerant channel are formed in all the heat exchange pieces, and the refrigerant cavities of any two adjacent heat exchange pieces communicate with each other through a middle connecting pipe; a part of the plurality of intervals form a cooling airflow channel, and the other part of the plurality of intervals form a compressed air channel, so that the problem of relatively poor integration level of the fuel cell in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and particularly relates to a heat exchange device and a fuel cell. Background Technique

[0002] The air supply system of a fuel cell engine needs to use a single-stage air compressor, or a two-stage air compressor, or an expander for air supply. When the air compressor works, the temperature and pressure of the air will increase after compressing the air. When the ambient temperature is 45°C, the temperature at the outlet of the air compressor can reach 250°C (for a 300kW fuel cell engine). In order to control the air temperature at the inlet of the fuel cell stack below 80°C, it is necessary to cool the air at the outlet of the air compressor. In addition, it is also necessary to cool the stack to reduce the cold start time of the fuel cell and extend the stability and service life of the fuel cell.

[0003] At present, the fuel cell uses a water-air intercooler to cool the air at the outlet of the air compressor, and uses a radiator to cool the refrigerant flowing through the stack. Such a setting has the following problems:

[0004] (1) However, with the increase of the engine power, the volumes of the intercooler and the radiator also increase. It is easy to occupy a large space due to the large volume, and it is difficult to arrange the cooling pipelines, and the aesthetics of the whole machine is poor, etc. Eventually, it affects the integration, volume power and mass power of the fuel cell.

[0005] (2) The intercooler and the radiator are separately arranged, and the cooling pipeline layout of the intercooler and the radiator is not reasonable and compact enough, so that the integration of the fuel cell is poor, the volume is large, the flow rate and head loss of the water pump are increased, and the heat dissipation pressure of the fuel cell is increased. Content of the Utility Model

[0006] The main purpose of the utility model is to provide a heat exchange device and a fuel cell to solve the problem of poor integration of the existing fuel cell.

[0007] To achieve the above object, according to one aspect of the present utility model, a heat exchange device is provided, which is applicable to a fuel cell. The fuel cell includes a stack and an air compressor. The heat exchange device includes a housing and a first heat dissipation part arranged inside the housing. The first heat dissipation part includes: a first refrigerant channel, a cooling air flow channel, and a compressed air channel. The two ends of the first refrigerant channel are respectively communicated with the refrigerant outlet and the refrigerant inlet of the stack. The cooling air flow channel is used for the cooling air flow to pass through. The two ends of the compressed air channel are respectively communicated with the air outlet of the air compressor and the air inlet of the stack. The compressed air channel and the cooling air flow channel are arranged in sequence along a first direction, and the compressed air channel is located near the outlet of the first refrigerant channel of the cooling air flow channel; a plurality of heat exchange elements, the plurality of heat exchange elements are arranged at intervals to form a plurality of intervals, and a refrigerant cavity for forming the first refrigerant channel is arranged in each heat exchange element, and the refrigerant cavities of any two adjacent heat exchange elements are communicated through an intermediate connecting pipe; a part of the plurality of intervals forms the cooling air flow channel, and another part of the plurality of intervals forms the compressed air channel.

[0008] Further, the heat exchange device includes: a first liquid inlet nozzle and a first liquid outlet nozzle, the first liquid inlet nozzle and the first liquid outlet nozzle are arranged at intervals on the housing, and the first liquid inlet nozzle and the first liquid outlet nozzle are respectively communicated with the two ends of the first refrigerant channel; a first air inlet and a first air outlet, the first air inlet and the first air outlet are respectively arranged on opposite sides of the housing, and the first air inlet and the first air outlet are respectively communicated with the two ends of the cooling air flow channel; a first air inlet nozzle and a first air outlet nozzle, the first air inlet nozzle and the first air outlet nozzle are respectively arranged on opposite sides of the housing, the two ends of the first air inlet nozzle are respectively communicated with the inlet of the compressed air channel and the air outlet of the air compressor, and the two ends of the first air outlet nozzle are respectively communicated with the outlet of the compressed air channel and the air inlet of the stack.

[0009] Further, the heat exchange device includes: a first temperature sensor, and a detection probe of the first temperature sensor is arranged at the first liquid inlet nozzle to detect the first real-time temperature of the refrigerant flowing through the first liquid inlet nozzle; and / or a second temperature sensor, and a detection probe of the second temperature sensor is arranged at the first liquid outlet nozzle to detect the second real-time temperature of the refrigerant flowing through the first liquid outlet nozzle.

[0010] Further, the heat exchange device includes: a second air inlet and a second air outlet, the second air inlet and the second air outlet are respectively arranged on opposite sides of the housing; a first cover body and a second cover body, the first cover body and the second cover body are respectively installed on opposite sides of the housing, the two ends of the first cover body are respectively connected with the second air inlet and the first air inlet nozzle, and the two ends of the second cover body are respectively connected with the second air inlet and the first air outlet nozzle; wherein, the flow area of the second air inlet is larger than the flow area of the first air inlet nozzle, the flow area of the second air outlet is larger than the flow area of the first air outlet nozzle, and the flow areas of the first cover body and the second cover body gradually increase along the direction close to the housing.

[0011] Further, the first heat dissipation part includes a plurality of external fins, and the plurality of external fins are correspondingly arranged in a plurality of intervals; and / or the heat exchange member is a heat exchange plate; and / or internal fins are arranged in the refrigerant cavity; and / or the first heat dissipation part includes a partition plate, and the partition plate is arranged in the housing to divide the interior of the housing into a first cavity space and a second cavity space, the cooling air flow channel is located in the first cavity space, and the compressed air channel is located in the second cavity space.

[0012] Further, the heat exchange device further includes a second heat dissipation part, and the second heat dissipation part is arranged on one side of the housing. The second heat dissipation part includes a heat dissipation fan, and the outlet of the heat dissipation fan is communicated with the inlet of the cooling air flow channel.

[0013] Further, the second heat dissipation part includes a plurality of heat dissipation fans, and the plurality of heat dissipation fans are arranged at intervals on the same side of the first heat dissipation part; and / or the second heat dissipation part further includes a fan support, the fan support is installed on the first heat dissipation part, and the heat dissipation fan is installed on the fan support.

[0014] Further, the heat exchange device further includes a hydrogen heater, and the hydrogen heater includes a heater housing and a second refrigerant channel and a hydrogen channel located in the heater housing; wherein, the hydrogen heater is installed on the housing and is located on the side of the housing away from the second heat dissipation part, and the hydrogen heater and the outlet of the compressed air channel are arranged at intervals along a first direction and the hydrogen heater is located on the side of the outlet of the compressed air channel close to the inlet of the first refrigerant channel.

[0015] Further, the hydrogen heater further includes: a second liquid inlet nozzle and a second liquid outlet nozzle, the second liquid inlet nozzle and the second liquid outlet nozzle are respectively arranged on opposite sides of the heater housing, and the second liquid inlet nozzle and the second liquid outlet nozzle are respectively communicated with both ends of the second refrigerant channel; a second gas inlet nozzle and a second gas outlet nozzle, the second gas inlet nozzle and the second gas outlet nozzle are respectively arranged on opposite sides of the heater housing, and the second gas inlet nozzle and the second gas outlet nozzle are respectively communicated with both ends of the hydrogen channel.

[0016] According to another aspect of the present invention, there is provided a fuel cell, including a stack, an air compressor and the above-mentioned heat exchange device. Both ends of the first refrigerant channel of the heat exchange device are respectively communicated with the refrigerant outlet and the refrigerant inlet of the stack, and both ends of the compressed air channel of the heat exchange device are respectively communicated with the air outlet of the air compressor and the air inlet of the stack.

[0017] Applying the technical solution of the present utility model, the heat exchange device of the present utility model is applicable to a fuel cell. The fuel cell includes a stack and an air compressor. The heat exchange device includes a housing and a first heat dissipation part arranged inside the housing. The first heat dissipation part includes: a first refrigerant channel, a cooling air flow channel, and a compressed air channel. The two ends of the first refrigerant channel are respectively communicated with the refrigerant outlet and the refrigerant inlet of the stack. The cooling air flow channel is used for the cooling air flow to pass through. The two ends of the compressed air channel are respectively communicated with the air outlet of the air compressor and the air inlet of the stack. The compressed air channel and the cooling air flow channel are arranged in sequence along a first direction, and the compressed air channel is located near the outlet of the first refrigerant channel of the cooling air flow channel; a plurality of heat exchange elements, the plurality of heat exchange elements are arranged at intervals to form a plurality of intervals, and a refrigerant cavity for forming the first refrigerant channel is arranged in each heat exchange element, and the refrigerant cavities between any two adjacent heat exchange elements are communicated through an intermediate connecting pipe; a part of the plurality of intervals forms the cooling air flow channel, and another part of the plurality of intervals forms the compressed air channel. In this way, the heat exchange device of the present utility model combines the intercooler and the radiator in the prior art, realizes the purpose of both cooling the refrigerant flowing through the stack and cooling the air flowing out of the air outlet of the air compressor, saves the layout of the connecting pipeline between the radiator and the intercooler, avoids the problem that the intercooler and the radiator in the prior art occupy a large space due to their large volume, solves the problem of poor integration of the fuel cell in the prior art, makes the cooling pipeline layout of the fuel cell cooling system more reasonable and compact, reduces the flow rate and head loss of the water pump, reduces the heat dissipation pressure of the fuel cell, and is beneficial to improving the integration, volume power, and mass power of the fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 The front view schematic diagram of the embodiment of the heat exchange device according to the present utility model is shown;

[0020] Figure 2 It shows Figure 1 The structural schematic diagram of the first embodiment of the first heat dissipation part of the heat exchange device shown;

[0021] Figure 3 It shows Figure 1 The structural schematic diagram of the second embodiment of the first heat dissipation part of the heat exchange device shown;

[0022] Figure 4 It shows Figure 1 The rear view of the heat exchange device shown;

[0023] Figure 5 shows Figure 1 a top view of the heat exchange device shown;

[0024] Figure 6 shows Figure 1 a bottom view of the heat exchange device shown;

[0025] Figure 7 shows Figure 1 a left view of the heat exchange device shown;

[0026] Figure 8 shows Figure 1 a right view of the heat exchange device shown.

[0027] Wherein, the above-mentioned drawings include the following reference numerals:

[0028] 1, housing; 2, first heat dissipation part; 4, cooling air flow channel; 5, compressed air channel; 6, heat exchange element; 7, first liquid inlet nozzle; 8, first liquid outlet nozzle; 9, intermediate connecting pipe; 10, partition plate; 11, first air inlet nozzle; 12, first air outlet nozzle; 13, first temperature sensor; 14, second temperature sensor; 17, first cover; 18, second cover; 19, external fin; 20, second heat dissipation part; 21, heat dissipation fan; 22, fan support; 23, hydrogen heater; 24, heater housing; 25, second liquid inlet nozzle; 26, second liquid outlet nozzle; 27, second air inlet nozzle; 28, second air outlet nozzle. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] Such as Figures 1 to 8As shown in the figure, the present utility model provides a heat exchange device applicable to a fuel cell. The fuel cell includes an electric stack and an air compressor. The heat exchange device includes a housing 1 and a first heat dissipation part 2 disposed inside the housing 1. The first heat dissipation part 2 includes: a first refrigerant channel, a cooling air flow channel 4, and a compressed air channel 5. The two ends of the first refrigerant channel are respectively communicated with the refrigerant outlet and the refrigerant inlet of the electric stack. The cooling air flow channel 4 is used for the cooling air flow to pass through. The two ends of the compressed air channel 5 are respectively communicated with the air outlet of the air compressor and the air inlet of the electric stack. The compressed air channel 5 and the cooling air flow channel 4 are arranged in sequence along a first direction, and the compressed air channel 5 is located near the outlet of the first refrigerant channel of the cooling air flow channel 4; a plurality of heat exchange elements 6 are arranged at intervals to form a plurality of intervals. Each heat exchange element 6 is provided with a refrigerant cavity for forming the first refrigerant channel, and the refrigerant cavities between any two adjacent heat exchange elements 6 are communicated through an intermediate connecting pipe 9; a part of the plurality of intervals forms the cooling air flow channel 4, and another part of the plurality of intervals forms the compressed air channel 5.

[0031] In this way, the heat exchange device of the present utility model combines the intercooler and the radiator in the prior art, achieving the purpose of both cooling the refrigerant flowing through the electric stack and cooling the air flowing out of the air outlet of the air compressor. Moreover, it saves the layout of the connecting pipeline between the radiator and the intercooler, avoids the problem that the intercooler and the radiator in the prior art occupy a large space due to their large volume, solves the problem of poor integration of the fuel cell in the prior art, makes the cooling pipeline layout of the fuel cell cooling system more reasonable and compact, reduces the flow rate and head loss of the water pump, reduces the heat dissipation pressure of the fuel cell, and is beneficial to improving the integration, volume power, and mass power of the fuel cell.

[0032] As Figure 2 shown in the embodiment, the plurality of heat exchange elements 6 are arranged at intervals along the first direction, and the direction indicated by the arrow in the figure is the flowing direction of the refrigerant.

[0033] As Figure 3 shown in the embodiment, the plurality of heat exchange elements 6 are arranged at intervals along a second direction perpendicular to the first direction, and the direction indicated by the arrow in the figure is the flowing direction of the refrigerant.

[0034] As Figure 1 and Figure 4As shown in the figure, the heat exchange device includes: a first liquid inlet nozzle 7 and a first liquid outlet nozzle 8. The first liquid inlet nozzle 7 and the first liquid outlet nozzle 8 are spaced apart on the housing 1, and the first liquid inlet nozzle 7 and the first liquid outlet nozzle 8 are respectively communicated with both ends of the first refrigerant channel; a first air inlet and a first air outlet. The first air inlet and the first air outlet are respectively arranged on opposite sides of the housing 1, and the first air inlet and the first air outlet are respectively communicated with both ends of the cooling air flow channel 4; a first air inlet nozzle 11 and a first air outlet nozzle 12. The first air inlet nozzle 11 and the first air outlet nozzle 12 are respectively arranged on opposite sides of the housing 1. Both ends of the first air inlet nozzle 11 are respectively communicated with the inlet of the compressed air channel 5 and the air outlet of the air compressor, and both ends of the first air outlet nozzle 12 are respectively communicated with the outlet of the compressed air channel 5 and the air inlet of the fuel cell stack.

[0035] Specifically, the first liquid inlet nozzle 7 and the first liquid outlet nozzle 8 are spaced apart on the first side of the housing 1. The first air inlet nozzle 11 is located on the first side of the housing 1, and the first air outlet nozzle 12 is located on the second side of the housing 1.

[0036] Further, the housing 1 is a rectangular shell. The first side and the second side of the housing 1 are two sides spaced apart along its own thickness direction. The first liquid inlet nozzle 7 and the first liquid outlet nozzle 8 are located at two diagonals of the first side of the housing 1, and the first air inlet nozzle 11 and the first air outlet nozzle 12 are respectively located on two sides of the housing 1 spaced apart along its own thickness direction.

[0037] As Figure 1 、 Figure 5 and Figure 6 shown in the figure, the heat exchange device includes: a first temperature sensor 13. The detection probe of the first temperature sensor 13 is arranged at the first liquid inlet nozzle 7 to detect the first real-time temperature of the refrigerant flowing through the first liquid inlet nozzle 7; and / or a second temperature sensor 14. The detection probe of the second temperature sensor 14 is arranged at the first liquid outlet nozzle 8 to detect the second real-time temperature of the refrigerant flowing through the first liquid outlet nozzle 8.

[0038] As Figure 1 、 Figures 4 to 8 shown in the figure, the heat exchange device includes: a second air inlet and a second air outlet. The second air inlet and the second air outlet are respectively arranged on opposite sides of the housing 1; a first cover 17 and a second cover 18. The first cover 17 and the second cover 18 are respectively installed on opposite sides of the housing 1. Both ends of the first cover 17 are respectively connected to the second air inlet and the first air inlet nozzle 11, and both ends of the second cover 18 are respectively connected to the second air inlet and the first air outlet nozzle 12; wherein, the flow area of the second air inlet is larger than the flow area of the first air inlet nozzle 11, the flow area of the second air outlet is larger than the flow area of the first air outlet nozzle 12, and the flow areas of the first cover 17 and the second cover 18 gradually increase along the direction close to the housing 1.

[0039] Specifically, the outer shell 1 is a rectangular shell, and the second air inlet and the second air outlet are respectively located on two sides of the outer shell 1 that are spaced apart along its own thickness direction.

[0040] As Figure 2 and Figure 3 shown, the first heat dissipation part 2 includes a plurality of outer fins 19, and the plurality of outer fins 19 are correspondingly arranged in a plurality of intervals; and / or the heat exchange member 6 is a heat exchange plate; and / or inner fins are arranged in the refrigerant cavity; and / or the first heat dissipation part 2 includes a partition plate 10, and the partition plate 10 is arranged in the outer shell 1 to divide the interior of the outer shell 1 into a first cavity space and a second cavity space. The cooling air flow channel 4 is located in the first cavity space, the compressed air channel 5 is located in the second cavity space, and the first refrigerant channel is arranged through the first cavity space and the second cavity space.

[0041] Specifically, the first heat dissipation part 2 is a plate-fin structure made by a vacuum brazing process.

[0042] As Figure 1 、 Figures 5 to 8 shown, the heat exchange device further includes a second heat dissipation part 20, and the second heat dissipation part 20 is arranged on one side of the outer shell 1. The second heat dissipation part 20 includes a heat dissipation fan 21, and the outlet of the heat dissipation fan 21 is communicated with the inlet of the cooling air flow channel 4.

[0043] Specifically, the second heat dissipation part 20 is arranged on the first side of the outer shell 1 and corresponds to the first cavity space, and the outlet of the heat dissipation fan 21 is communicated with the first air inlet.

[0044] The heat exchange device of the present utility model further includes a controller, and the controller is electrically connected to the first temperature sensor 13, the second temperature sensor 14, and the heat dissipation fan 21 respectively to control the rotation speed of the heat dissipation fan 21 according to the detection results of the first temperature sensor 13 and the second temperature sensor 14. In this way, while ensuring the heat dissipation of the stack and the cooling of the compressed air, the heat dissipation power consumption of the fuel cell can be reduced under harsh working conditions.

[0045] Specifically, the second heat dissipation part 20 includes a plurality of heat dissipation fans 21, and the plurality of heat dissipation fans 21 are spaced apart on the same side of the first heat dissipation part 2; and / or the second heat dissipation part 20 further includes a fan bracket 22, the fan bracket 22 is installed on the first heat dissipation part 2, and the heat dissipation fan 21 is installed on the fan bracket 22.

[0046] As Figures 4 to 8As shown in the figure, the heat exchange device further includes a hydrogen heater 23, which includes a heater housing 24 and a second refrigerant channel and a hydrogen channel located within the heater housing 24; wherein, the hydrogen heater 23 is installed on the outer shell 1 and is located on the side of the outer shell 1 away from the second heat dissipation part 20, and the hydrogen heater 23 and the outlet of the compressed air channel 5 are arranged at intervals in the first direction, and the hydrogen heater 23 is located on the side of the outlet of the compressed air channel 5 closer to the inlet of the first refrigerant channel.

[0047] Wherein, the hydrogen heater 23 is arranged on the second side of the outer shell 1 and the hydrogen heater 23 and the second cover body 18 are arranged at intervals in the first direction.

[0048] In this way, integrating the hydrogen heater in the prior art with the intercooler and the radiator can reduce the overall power consumption of the cooling system of the fuel cell, save the overall space size of the fuel cell, facilitate the pipeline layout of the cooling system of the fuel cell, and increase the volume power and mass power of the fuel cell.

[0049] Specifically, the hydrogen heater 23 further includes: a second liquid inlet nozzle 25 and a second liquid outlet nozzle 26, the second liquid inlet nozzle 25 and the second liquid outlet nozzle 26 are respectively arranged on opposite sides of the heater housing 24, and the second liquid inlet nozzle 25 and the second liquid outlet nozzle 26 are respectively communicated with both ends of the second refrigerant channel; a second gas inlet nozzle 27 and a second gas outlet nozzle 28, the second gas inlet nozzle 27 and the second gas outlet nozzle 28 are respectively arranged on opposite sides of the heater housing 24, and the second gas inlet nozzle 27 and the second gas outlet nozzle 28 are respectively communicated with both ends of the hydrogen channel.

[0050] Wherein, the second liquid inlet nozzle 25 and the second gas outlet nozzle 28 are arranged close to each other, and the second liquid outlet nozzle 26 and the second gas inlet nozzle 27 are arranged close to each other, so that the flow directions of the media in the second refrigerant channel and the hydrogen channel are opposite, thereby obtaining a higher heat and mass transfer efficiency.

[0051] The present utility model also provides a fuel cell, which includes a stack, an air compressor and the above heat exchange device. Both ends of the first refrigerant channel of the heat exchange device are respectively communicated with the refrigerant outlet and the refrigerant inlet of the stack, and both ends of the compressed air channel 5 of the heat exchange device are respectively communicated with the air outlet of the air compressor and the air inlet of the stack.

[0052] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0053] The heat exchange device of the present utility model is applicable to a fuel cell. The fuel cell includes a fuel cell stack and an air compressor. The heat exchange device includes a housing 1 and a first heat dissipation part 2 arranged inside the housing 1. The first heat dissipation part 2 includes: a first refrigerant channel, a cooling air flow channel 4, and a compressed air channel 5. The two ends of the first refrigerant channel are respectively communicated with the refrigerant outlet and the refrigerant inlet of the fuel cell stack. The cooling air flow channel 4 is used for the cooling air flow to pass through. The two ends of the compressed air channel 5 are respectively communicated with the air outlet of the air compressor and the air inlet of the fuel cell stack. The compressed air channel 5 and the cooling air flow channel 4 are arranged in sequence along a first direction. The compressed air channel 5 is located near the outlet of the first refrigerant channel of the cooling air flow channel 4; a plurality of heat exchange elements 6 are arranged at intervals to form a plurality of intervals. A refrigerant cavity for forming the first refrigerant channel is arranged in each heat exchange element 6. The refrigerant cavities between any two adjacent heat exchange elements 6 are communicated through an intermediate connecting pipe 9; a part of the plurality of intervals forms the cooling air flow channel 4, and another part of the plurality of intervals forms the compressed air channel 5. In this way, the heat exchange device of the present utility model combines an intercooler and a radiator in the prior art, achieving the purpose of both cooling the refrigerant flowing through the fuel cell stack and cooling the air flowing out of the air outlet of the air compressor, saving the layout of the connecting pipeline between the radiator and the intercooler, avoiding the problem that the intercooler and the radiator in the prior art occupy a large space due to their large volume, solving the problem of poor integration of the fuel cell in the prior art, making the cooling pipeline layout of the fuel cell cooling system more reasonable and compact, reducing the flow rate and head loss of the water pump, reducing the heat dissipation pressure of the fuel cell, and being beneficial to improving the integration, volume power, and mass power of the fuel cell.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of this application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0056] In the description of this application, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of this application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0057] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above", etc. can be used here to describe the spatial positional relationships of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0058] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings, and thus cannot be construed as limiting the protection scope of this application.

[0059] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat exchange device, characterized in that: Applicable to a fuel cell, the fuel cell comprising a fuel cell stack and an air compressor, the heat exchange device comprising a housing (1) and a first heat dissipation portion (2) arranged in the housing (1), the first heat dissipation portion (2) comprising: A first refrigerant channel, a cooling air flow channel (4) and a compressed air channel (5), wherein the two ends of the first refrigerant channel are respectively connected to the refrigerant outlet and the refrigerant inlet of the fuel cell stack, the cooling air flow channel (4) is used for cooling air to pass through, and the two ends of the compressed air channel (5) are respectively connected to the air outlet of the air compressor and the air inlet of the fuel cell stack, the compressed air channel (5) and the cooling air flow channel (4) are arranged in sequence along a first direction, and the compressed air channel (5) is located at the outlet of the cooling air flow channel (4) close to the first refrigerant channel; A plurality of heat exchange elements (6) are arranged at intervals to form a plurality of intervals, each of the heat exchange elements (6) is provided with a refrigerant cavity for constituting the first refrigerant channel, and the refrigerant cavities of any two adjacent heat exchange elements (6) are connected via an intermediate connecting pipe (9); a portion of the plurality of intervals constitutes the cooling air flow channel (4), and another portion of the plurality of intervals constitutes the compressed air channel (5).

2. The heat exchange device according to claim 1, characterized in that: The heat exchange device comprises: a first liquid inlet nozzle (7) and a first liquid outlet nozzle (8), wherein the first liquid inlet nozzle (7) and the first liquid outlet nozzle (8) are arranged on the housing (1) at an interval, and the first liquid inlet nozzle (7) and the first liquid outlet nozzle (8) are respectively connected to two ends of the first refrigerant channel; a first air inlet and a first air outlet, wherein the first air inlet and the first air outlet are respectively arranged on opposite sides of the housing (1), and the first air inlet and the first air outlet are respectively connected to two ends of the cooling air flow channel (4); A first air inlet nozzle (11) and a first air outlet nozzle (12), wherein the first air inlet nozzle (11) and the first air outlet nozzle (12) are respectively arranged on opposite sides of the housing (1), and the two ends of the first air inlet nozzle (11) are respectively connected to the inlet of the compressed air channel (5) and the air outlet of the air compressor, and the two ends of the first air outlet nozzle (12) are respectively connected to the outlet of the compressed air channel (5) and the air inlet of the fuel cell stack.

3. The heat exchange device according to claim 2, characterized in that: The heat exchange device comprises: a first temperature sensor (13), wherein a detection probe of the first temperature sensor (13) is arranged at the first liquid inlet nozzle (7) to detect a first real-time temperature of the refrigerant flowing through the first liquid inlet nozzle (7); and / or A second temperature sensor (14), wherein a detection probe of the second temperature sensor (14) is arranged at the first liquid outlet nozzle (8) to detect a second real-time temperature of the refrigerant flowing through the first liquid outlet nozzle (8).

4. The heat exchange device according to claim 2, characterized in that: The heat exchange device comprises: a second air inlet and a second air outlet, wherein the second air inlet and the second air outlet are respectively arranged on opposite sides of the housing (1); A first cover body (17) and a second cover body (18), wherein the first cover body (17) and the second cover body (18) are respectively mounted on opposite sides of the housing (1), two ends of the first cover body (17) are respectively connected to the second air inlet and the first air inlet nozzle (11), and two ends of the second cover body (18) are respectively connected to the second air inlet and the first air outlet nozzle (12); The flow area of ​​the second air inlet is greater than the flow area of ​​the first air inlet nozzle (11), the flow area of ​​the second air outlet is greater than the flow area of ​​the first air outlet nozzle (12), and the flow areas of the first cover body (17) and the second cover body (18) gradually increase in a direction approaching the outer shell (1).

5. The heat exchange device according to claim 1, characterized in that: The first heat dissipation portion (2) comprises a plurality of external fins (19), and the plurality of external fins (19) are arranged in a one-to-one correspondence within the plurality of intervals; and / or The heat exchange element (6) is a heat exchange plate; and / or The refrigerant cavity is provided with inner fins; and / or The first heat dissipation portion (2) comprises a partition plate (10), wherein the partition plate (10) is arranged inside the outer shell (1) to divide the interior of the outer shell (1) into a first cavity space and a second cavity space, wherein the cooling air flow channel (4) is located in the first cavity space, and the compressed air channel (5) is located in the second cavity space.

6. The heat exchange device according to any one of claims 1 to 5, characterized in that: The heat exchange device further comprises a second heat dissipation portion (20), the second heat dissipation portion (20) being arranged on one side of the housing (1), the second heat dissipation portion (20) comprising a heat dissipation fan (21), the outlet of the heat dissipation fan (21) being connected to the inlet of the cooling air flow channel (4).

7. The heat exchange device according to claim 6, characterized in that: The second heat dissipation portion (20) comprises a plurality of heat dissipation fans (21), and the plurality of heat dissipation fans (21) are arranged at intervals on the same side of the first heat dissipation portion (2); and / or The second heat dissipation part (20) further comprises a fan bracket (22), wherein the fan bracket (22) is mounted on the first heat dissipation part (2), and the heat dissipation fan (21) is mounted on the fan bracket (22).

8. The heat exchange device according to claim 6, characterized in that: The heat exchange device also includes a hydrogen heater (23), and the hydrogen heater (23) includes a heater shell (24) and a second refrigerant channel and a hydrogen channel located in the heater shell (24); wherein the hydrogen heater (23) is installed on the outer shell (1) and is located on a side of the outer shell (1) away from the second heat dissipation portion (20), the hydrogen heater (23) and the outlet of the compressed air channel (5) are spaced apart along the first direction, and the hydrogen heater (23) is located on a side of the outlet of the compressed air channel (5) close to the inlet of the first refrigerant channel.

9. The heat exchange device according to claim 8, characterized in that: The hydrogen heater (23) further comprises: A second liquid inlet nozzle (25) and a second liquid outlet nozzle (26), wherein the second liquid inlet nozzle (25) and the second liquid outlet nozzle (26) are respectively arranged on opposite sides of the heater housing (24), and the second liquid inlet nozzle (25) and the second liquid outlet nozzle (26) are respectively connected to two ends of the second refrigerant channel; A second air inlet nozzle (27) and a second air outlet nozzle (28), wherein the second air inlet nozzle (27) and the second air outlet nozzle (28) are respectively arranged on opposite sides of the heater housing (24), and the second air inlet nozzle (27) and the second air outlet nozzle (28) are respectively connected to two ends of the hydrogen channel.

10. A fuel cell, characterized in that: It comprises a fuel cell stack, an air compressor and a heat exchange device as described in any one of claims 1 to 9, wherein the two ends of a first refrigerant channel of the heat exchange device are respectively connected to a refrigerant outlet and a refrigerant inlet of the fuel cell stack, and the two ends of a compressed air channel (5) of the heat exchange device are respectively connected to an air outlet of the air compressor and an air inlet of the fuel cell stack.

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