Hydrogen fuel cell thermal management device with auxiliary cooling structure

Abstract

The utility model discloses a hydrogen fuel cell thermal management device with an auxiliary cooling structure, which belongs to the technical field of hydrogen fuel cell thermal management and comprises a hydrogen fuel cell, a main cooling module, a first electromagnetic valve, a heating module and a first pipeline. The cooling liquid input end and the cooling liquid output end of the hydrogen fuel cell are communicated with the main cooling module through a first pipeline, and the heating module is communicated with the main cooling module through the first pipeline. According to the utility model, the temperature detection and adjustment assembly and the auxiliary cooling module are arranged between the first electromagnetic valve and the first pipeline communicated with the hydrogen fuel cell, so that when the temperature of the hydrogen fuel cell reaches an interval suitable for starting, the temperature of heated liquid which does not enter a cell runner is detected through the temperature detection and adjustment assembly; and cooling is realized through the auxiliary cooling module, so that excessive heat is prevented from entering the hydrogen fuel cell.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cell thermal management, in particular to a hydrogen fuel cell thermal management device with an auxiliary cooling structure. Background Art

[0002] The normal operating temperature range of hydrogen fuel cells is about 70-80℃, and the electrical efficiency is between 40%-60%. Therefore, hydrogen fuel cells will release 60%-40% of heat while working, so a thermal management device is needed to achieve heat dissipation to keep the battery in the normal operating temperature range. The thermal management device in the prior art usually adopts a liquid cooling heat dissipation method, including a water pump, a thermostat, a deionizer, a heat dissipation module and other structures. The coolant is circulated in the pipeline through the water pump, and the heat is dissipated through the heat dissipation module. Since the temperature is lower in winter, and hydrogen fuel cells need to be started under appropriate temperature conditions, the current thermal management device usually also has a heating device such as PTC connected to the pipeline, and the heated liquid is realized by the water pump. Flow, enter the flow channel of the battery, achieve heating, and reach a temperature suitable for starting, it can be used.

[0003] However, although the PTC heating device has a good effect, it also has disadvantages: since the heated liquid flows into the flow channel of the battery, when the temperature of the battery reaches a suitable starting range, there is still some heated coolant in the pipeline that has not yet entered the battery flow channel. When these coolants flow through the flow channel, they often bring more heat to the battery, causing the battery temperature to easily exceed the suitable working range.

[0004] Therefore, we propose a hydrogen fuel cell thermal management device with an auxiliary cooling structure to solve the above-mentioned problems.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the utility model, therefore, it may include prior art that is not known to ordinary technicians in this field. Utility Model Content

[0006] The purpose of the utility model is to provide a hydrogen fuel cell thermal management device with an auxiliary cooling structure to solve the problem proposed in the above background technology that the heated coolant in the pipeline that has not yet entered the battery flow channel enters the battery flow channel, causing the battery temperature to be too high.

[0007] To achieve the above-mentioned purpose, the utility model provides a hydrogen fuel cell thermal management device with an auxiliary cooling structure, including a hydrogen fuel cell, a main cooling module, a first solenoid valve, a heating module and a first pipeline, the coolant input end and the output end of the hydrogen fuel cell are connected to the main cooling module through the first pipeline, the heating module is connected to the main cooling module through the first pipeline, the first solenoid valve is connected to the hydrogen fuel cell, the main cooling module and the heating module through the first pipeline, and also includes a temperature detection and adjustment component and an auxiliary cooling module;

[0008] The temperature detection and adjustment component includes a detection tube and a regulation box, a temperature sensor is provided in the inner cavity of the detection tube, a second solenoid valve is provided on a first pipeline connected to the detection tube and the hydrogen fuel cell, the regulation box is connected to the output end of the second solenoid valve, and the regulation box is also connected to the first pipeline through a connecting pipe, and the connection point is located between the hydrogen fuel cell and the second solenoid valve;

[0009] The auxiliary cooling module penetrates into the inner cavity of the regulating box.

[0010] Preferably, the inner cavity of the regulating box is provided with staggered partitions to form a passage;

[0011] The regulating box is also provided with a mounting hole located between two adjacent partitions;

[0012] The auxiliary cooling module comprises a heat exchange box, the outer wall of which is provided with a semiconductor refrigeration sheet, and the cold end of the semiconductor refrigeration sheet is attached to the outer wall of the heat exchange box;

[0013] The auxiliary cooling module also includes a cooling box, the heat exchange box and the cooling box are connected through two sets of second pipelines, and a second water pump is provided on one of the second pipelines;

[0014] The cooling box body is provided with a cooling plate, and the cooling plate penetrates into the inner cavity of the regulating box through the mounting hole. The cooling plate is a hollow structure, and one end surface of the cooling plate that penetrates into the inner cavity of the regulating box is a closed structure;

[0015] There is a gap between the cooling plate and the adjacent partition plate.

[0016] Preferably, the main cooling module includes an expansion water tank, a first water pump, a cooling module, a thermostat and a deionizer;

[0017] The output end of the hydrogen fuel cell coolant is connected to the input end of the expansion water tank through a first pipeline, the output end of the expansion water tank is connected to the input end of the first water pump through a first pipeline, the output end of the first water pump is connected to the input end of the thermostat through a first pipeline, and the cooling module and the deionizer are connected in parallel to the output end of the thermostat through the first pipeline;

[0018] The output end of the deionizer is connected to the first solenoid valve through a first pipeline;

[0019] The output end of the cooling module is communicated with the first solenoid valve through a first pipeline.

[0020] Preferably, the heating module comprises an intercooler and a PTC heater, and the intercooler and the PTC heater are connected in series via a first pipeline;

[0021] The input end of the intercooler is communicated with the first solenoid valve through a first pipeline, and the output end of the PTC heater is communicated with the input end of the first water pump.

[0022] Preferably, the regulating box, partition and cooling plate are all made of insulating materials.

[0023] Preferably, the cooling plate is also provided with a water guide groove.

[0024] Preferably, a heat dissipation fin is fixedly mounted on the hot end of the semiconductor refrigeration plate.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] (1) The utility model sets a temperature detection and regulation component and an auxiliary cooling module between the first solenoid valve and the first pipeline connected to the hydrogen fuel cell. When the temperature of the hydrogen fuel cell reaches a range suitable for startup, the temperature of the heated liquid that has not yet entered the battery flow channel is detected by the temperature detection and regulation component, and the auxiliary cooling module is used to achieve cooling, thereby preventing excessive heat from entering the hydrogen fuel cell.

[0027] (2) The utility model detects the temperature of the liquid about to enter the battery flow channel through a temperature sensor. When the temperature of the coolant after heat dissipation by the cooling module is still high, further cooling is achieved through an auxiliary cooling module.

[0028] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a schematic diagram of the structure of the temperature detection and adjustment component and the auxiliary cooling module of the utility model;

[0031] Figure 3It is a structural schematic diagram of the temperature detection and adjustment component of the utility model;

[0032] Figure 4 This is a schematic diagram of the internal structure of the regulating box of the utility model;

[0033] Figure 5 It is a cross-sectional view of the detection tube of the utility model;

[0034] Figure 6 It is a schematic diagram of the structure of the cooling box and the cooling plate of the utility model;

[0035] Figure 7 for Figure 6 A magnified view of the structure at center.

[0036] In the figure: 1. Hydrogen fuel cell; 2. Main cooling module; 3. First solenoid valve; 4. Heating module; 5. First pipeline; 6. Temperature detection and adjustment component; 7. Auxiliary cooling module; 8. Second pipeline;

[0037] 21. Expansion water tank; 22. First water pump; 23. Cooling module; 24. Thermostat; 25. Deionizer;

[0038] 41. Intercooler; 42. PTC heater;

[0039] 61. Detection tube; 62. Second solenoid valve; 63. Temperature sensor; 64. Adjustment box; 65. Connecting tube; 66. Partition plate; 67. Mounting hole;

[0040] 71. heat exchange box; 72. semiconductor refrigeration plate; 73. second water pump; 74. cooling box; 75. cooling plate; 76. water guide trough. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. It should be pointed out that the drawings are schematic and not drawn to scale. For the sake of clarity and convenience in the figures, the relative sizes and proportions of the parts shown in the figures are exaggerated or reduced in size, and any size is only exemplary and not restrictive.

[0042] Embodiment 1:

[0043] See also Figure 1-Figure 5, a hydrogen fuel cell thermal management device with an auxiliary cooling structure, comprising: a hydrogen fuel cell 1, a main cooling module 2, a first solenoid valve 3, a heating module 4 and a first pipeline 5, the coolant input end and the output end of the hydrogen fuel cell 1 are connected to the main cooling module 2 through the first pipeline 5, the heating module 4 is connected to the main cooling module 2 through the first pipeline 5, the first solenoid valve 3 is connected to the hydrogen fuel cell 1, the main cooling module 2 and the heating module 4 through the first pipeline 5, and also includes a temperature detection and adjustment component 6 and an auxiliary cooling module 7; the temperature detection and adjustment component 6 includes a detection tube 61 and a regulating box 64, a temperature sensor 63 is provided in the inner cavity of the detection tube 61, a second solenoid valve 62 is provided on the first pipeline 5 connecting the detection tube 61 and the hydrogen fuel cell 1, the regulating box 64 is connected to the output end of the second solenoid valve 62, the regulating box 64 is also connected to the first pipeline 5 through a connecting pipe 65, and the connection point is located between the hydrogen fuel cell 1 and the second solenoid valve 62; the auxiliary cooling module 7 penetrates into the inner cavity of the regulating box 64.

[0044] By adopting the above technical solution, before starting the hydrogen fuel cell 1 in winter, the liquid is heated by the heating module 4. Before the heated liquid passes through the first pipeline 5 and enters the flow channel of the hydrogen fuel cell 1, the temperature is detected by the temperature sensor 63 in the detection tube 61. After the hydrogen fuel cell 1 has been heated, the cooling effect is achieved by the auxiliary cooling module 7, so that the cooled liquid with a lower temperature enters the hydrogen fuel cell 1 to avoid excessive temperature. When the temperature of the liquid about to flow into the hydrogen fuel cell 1 is in a low state, it can directly enter the hydrogen fuel cell 1 through the control of the second solenoid valve 62.

[0045] See also Figure 2-Figure 6 , the inner cavity of the regulating box 64 is provided with staggered partitions 66 to form a passage; the regulating box 64 is also provided with a mounting hole 67 located between two adjacent partitions 66; the auxiliary cooling module 7 includes a heat exchange box 71, the outer wall of the heat exchange box 71 is provided with a semiconductor refrigeration plate 72, and the cold end of the semiconductor refrigeration plate 72 is attached to the outer wall of the heat exchange box 71; the auxiliary cooling module 7 also includes a cooling box 74, the heat exchange box 71 and the cooling box 74 are connected by two groups of second pipelines 8, one of the second pipelines 8 is provided with a second water pump 73; the cooling box 74 is provided with a cooling plate 75, the cooling plate 75 penetrates into the inner cavity of the regulating box 64 through the mounting hole 67, the cooling plate 75 is a hollow structure, and one end surface penetrating into the inner cavity of the regulating box 64 is a closed structure; there is a gap between the cooling plate 75 and the adjacent partition 66.

[0046] By adopting the above technical solution, when the liquid flows in the channel formed by the partition 66, its flow distance is longer, and the cooling plate 75 is always kept at a relatively low temperature due to the cooling effect of the semiconductor refrigeration plate 72. When the liquid flows through the cooling plate 75, heat exchange occurs with the cooling plate 75, so that the liquid temperature is reduced, and then it enters the flow channel of the hydrogen fuel cell 1.

[0047] See also Figure 1 The main cooling module 2 includes an expansion water tank 21, a first water pump 22, a cooling module 23, a thermostat 24 and a deionizer 25; the output end of the coolant of the hydrogen fuel cell 1 is connected to the input end of the expansion water tank 21 through the first pipeline 5, the output end of the expansion water tank 21 is connected to the input end of the first water pump 22 through the first pipeline 5, the output end of the first water pump 22 is connected to the input end of the thermostat 24 through the first pipeline 5, the cooling module 23 and the deionizer 25 are connected in parallel to the output end of the thermostat 24 through the first pipeline 5; the output end of the deionizer 25 is connected to the first solenoid valve 3 through the first pipeline 5; the output end of the cooling module 23 is connected to the first solenoid valve 3 through the first pipeline 5.

[0048] Please refer to the figure. The heating module 4 includes an intercooler 41 and a PTC heater 42. The intercooler 41 and the PTC heater 42 are connected in series through a first pipeline 5. The input end of the intercooler 41 is connected to the first solenoid valve through the first pipeline 5, and the output end of the PTC heater 42 is connected to the input end of the first water pump 22.

[0049] The regulating box 64, the partition plate 66 and the cooling plate 75 are all made of insulating materials, and the hot end of the semiconductor cooling plate 72 is also fixedly installed with a heat dissipation fin to facilitate heat dissipation.

[0050] Embodiment 2:

[0051] See also Figure 7 The cooling plate 75 is also provided with a water guide groove 76 . The design of the water guide groove 76 makes it easier for the liquid to pass through the cooling plate 75 and has a larger contact area with the cooling plate 75 .

[0052] Working principle: Before starting the hydrogen fuel cell 1 in winter, the liquid is first heated by the PTC heater 42. The liquid passes through the first water pump 22, the thermostat 24, the deionizer 25, the first solenoid valve 3, and then passes through the temperature detection and adjustment component 6 to enter the flow channel of the hydrogen fuel cell 1. When the hydrogen fuel cell 1 reaches a suitable temperature, the temperature of the liquid flowing into the detection tube 61 is detected by the temperature sensor 63. When the temperature is high, the second solenoid valve 62 is controlled to make the liquid flow into the channel formed by the partition 66, and the cold end of the semiconductor refrigeration plate 72 is refrigerated, so that the liquid in the heat exchange box 71 is in a relatively low temperature state, and the cooling plate 75 is in a relatively low temperature state. When the liquid in the channel formed by the partition 66 flows through the cooling plate 75, heat exchange is generated with the cooling plate 75. After the liquid flows out of the channel formed by the partition 66, it flows into the flow channel of the hydrogen fuel cell 1.

[0053] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0054] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more 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, unless they are contradictory.

[0058] In the drawings of the embodiments disclosed by the present invention, only the structures related to the embodiments disclosed by the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydrogen fuel cell thermal management device with an auxiliary cooling structure, comprising a hydrogen fuel cell (1), a main cooling module (2), a first solenoid valve (3), a heating module (4) and a first pipeline (5), wherein the coolant input end and the output end of the hydrogen fuel cell (1) are connected to the main cooling module (2) through the first pipeline (5), the heating module (4) is connected to the main cooling module (2) through the first pipeline (5), the first solenoid valve (3) is connected to the hydrogen fuel cell (1), the main cooling module (2) and the heating module (4) through the first pipeline (5), characterized in that: It also includes a temperature detection and adjustment component (6) and an auxiliary cooling module (7); The temperature detection and adjustment component (6) comprises a detection tube (61) and a regulation box (64); a temperature sensor (63) is provided in the inner cavity of the detection tube (61); a second solenoid valve (62) is provided on a first pipeline (5) connecting the detection tube (61) and the hydrogen fuel cell (1); the regulation box (64) is connected to an output end of the second solenoid valve (62); the regulation box (64) is also connected to the first pipeline (5) via a connecting tube (65), and the connection point is located between the hydrogen fuel cell (1) and the second solenoid valve (62); The auxiliary cooling module (7) penetrates into the inner cavity of the regulating box (64).

2. A hydrogen fuel cell thermal management device with an auxiliary cooling structure according to claim 1, characterized in that: The inner cavity of the regulating box (64) is provided with staggered partitions (66) to form a passage; The regulating box (64) is also provided with a mounting hole (67) located between two adjacent partitions (66); The auxiliary cooling module (7) comprises a heat exchange box (71), the outer wall of the heat exchange box (71) is provided with a semiconductor cooling sheet (72), and the cold end of the semiconductor cooling sheet (72) is attached to the outer wall of the heat exchange box (71); The auxiliary cooling module (7) further comprises a cooling box (74); the heat exchange box (71) and the cooling box (74) are connected via two sets of second pipelines (8); a second water pump (73) is provided on one of the second pipelines (8); The cooling box (74) is provided with a cooling plate (75), and the cooling plate (75) penetrates into the inner cavity of the regulating box (64) through the mounting hole (67); the cooling plate (75) is a hollow structure, and one end surface that penetrates into the inner cavity of the regulating box (64) is a closed structure; There is a gap between the cooling plate (75) and the adjacent partition plate (66).

3. The hydrogen fuel cell thermal management device with auxiliary cooling structure according to claim 1, characterized in that: The main cooling module (2) comprises an expansion water tank (21), a first water pump (22), a cooling module (23), a thermostat (24) and a deionizer (25); The output end of the coolant of the hydrogen fuel cell (1) is connected to the input end of the expansion water tank (21) through the first pipeline (5), the output end of the expansion water tank (21) is connected to the input end of the first water pump (22) through the first pipeline (5), the output end of the first water pump (22) is connected to the input end of the thermostat (24) through the first pipeline (5), and the cooling module (23) and the deionizer (25) are connected in parallel to the output end of the thermostat (24) through the first pipeline (5); The output end of the deionizer (25) is connected to the first solenoid valve (3) through a first pipeline (5); The output end of the cooling module (23) is connected to the first solenoid valve (3) via a first pipeline (5).

4. The hydrogen fuel cell thermal management device with auxiliary cooling structure according to claim 1, characterized in that: The heating module (4) comprises an intercooler (41) and a PTC heater (42), and the intercooler (41) and the PTC heater (42) are connected in series via a first pipeline (5); The input end of the intercooler (41) is connected to the first solenoid valve via a first pipeline (5), and the output end of the PTC heater (42) is connected to the input end of the first water pump (22).

5. The hydrogen fuel cell thermal management device with auxiliary cooling structure according to claim 2, characterized in that: The regulating box (64), the partition (66) and the cooling plate (75) are all made of insulating materials.

6. The hydrogen fuel cell thermal management device with auxiliary cooling structure according to claim 2, characterized in that: The cooling plate (75) is also provided with a water guide groove (76).

7. The hydrogen fuel cell thermal management device with auxiliary cooling structure according to claim 2, characterized in that: A heat dissipation fin is also fixedly mounted on the hot end of the semiconductor cooling plate (72).

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