Hydrogen fuel automobile liquid cooling device and hydrogen reactor circulating cooling system

Abstract

The invention discloses a hydrogen fuel automobile liquid cooling device and a hydrogen reactor circulating cooling system, and belongs to the technical field of hydrogen fuel automobiles. The hydrogen fuel automobile liquid cooling device comprises a liquid cooling radiator, a fan assembly is fixed to the bottom of the liquid cooling radiator, the liquid cooling radiator comprises a rectangular frame beam, a water inlet diversion bin and a water outlet confluence bin are arranged at the two ends of the inner wall of the rectangular frame beam, a plurality of radiating pipes are communicated between the water inlet diversion bin and the water outlet confluence bin, and a radiator water inlet pipe is arranged on the water inlet diversion bin; and a radiator water outlet pipe is arranged on the water outlet confluence bin. The hydrogen reactor circulating cooling system comprises an expansion water tank, a hydrogen reactor cooling module and the hydrogen fuel automobile liquid cooling device which are communicated with one another, the expansion water tank conveys cooling liquid to the hydrogen reactor cooling module, and a circulating water pump is arranged on a hydrogen reactor water inlet pipe. And the hydrogen reactor water outlet pipe and the hydrogen reactor water inlet pipe are respectively communicated with the radiator water inlet pipe and the radiator water outlet pipe to form a liquid cooling circulation system. The problem that the requirement for the heat dissipating capacity of a hydrogen fuel automobile is large is solved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen fuel vehicles, and in particular to a hydrogen fuel vehicle liquid cooling device and a hydrogen stack circulating cooling system. Background Art

[0002] The heat generated by hydrogen fuel vehicles mainly comes from the energy released when hydrogen undergoes a chemical reaction in the fuel cell. The calorific value of hydrogen combustion is very high, about three times the calorific value of traditional gasoline. Due to the differences in their characteristics from traditional internal combustion engines, hydrogen fuel vehicles face the serious problem of greater heat dissipation in the cooling device.

[0003] In the prior art, this is usually achieved by selecting a high-power fan, increasing the heat dissipation area, or using multiple radiators and changing the layout of the cooling module; but in actual automotive engineering, due to spatial limitations on the one hand and restrictions on the use requirements of special vehicles on the other, the use of higher-power fans and larger-volume radiators cannot be arranged on the entire vehicle. Poor cooling module design will cause insufficient heat dissipation of the hydrogen stack, affecting the charging efficiency of the fuel cell, and further affecting the reliability and life of the entire vehicle. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a hydrogen fuel vehicle liquid cooling device and a hydrogen stack circulating cooling system to solve the problem of large heat dissipation requirements of hydrogen fuel vehicles.

[0005] To achieve the above-mentioned purpose, the present invention designs a liquid cooling device for a hydrogen fuel vehicle, including a liquid cooling radiator, a fan assembly is fixed at the bottom of the liquid cooling radiator, the liquid cooling radiator includes a rectangular frame beam, and water inlet diversion bins and water outlet confluence bins are provided at both ends of the inner wall of the rectangular frame beam, a plurality of heat dissipation pipes are connected between the water inlet diversion bin and the water outlet confluence bin, a radiator water inlet pipe is provided on the water inlet diversion bin, and a radiator water outlet pipe is provided on the water outlet confluence bin.

[0006] Preferably, a plurality of insulating shock-absorbing pads are provided between the water inlet branching bin and the water outlet converging bin and the rectangular frame beam; the radiator water inlet pipe includes a first water inlet branch pipe, a second water inlet branch pipe and a third water inlet branch pipe which are sequentially connected along the liquid flow direction, the first water inlet branch pipe and the third water inlet branch pipe are insulating silicone tubes, the second water inlet branch pipe is a steel pipe, and two insulating fixing frames are provided on the second water inlet branch pipe; the radiator water outlet pipe is an insulating silicone tube. The insulation requirements of hydrogen fuel vehicles are met by using the radiator water outlet pipe, the first water inlet branch pipe and the third water inlet branch pipe as insulating silicone tubes, insulating fixing frames and insulating shock-absorbing pads.

[0007] Preferably, the insulating silicone tube comprises, from inside to outside, an inner silicone layer, an aramid cloth or fiber reinforcement layer, an outer silicone layer, and a woven mesh layer; the insulating silicone tube has the performance characteristics of anti-cracking, anti-folding, pressure resistance, and low conductivity.

[0008] Preferably, a mounting frame is provided on the rectangular frame beam, and the mounting frame fixes the liquid cooling radiator horizontally on the bottom of the two longitudinal beams of the automobile. The arrangement of the fins of the horizontally arranged radiator makes the flow path of the coolant in the radiator shorter and the heat transfer efficiency higher. In addition, the flow direction of the coolant of the cross-flow radiator is perpendicular to the flow direction of the air, and the air is more likely to take away the heat when flowing through the radiator, thereby improving the heat dissipation effect.

[0009] Preferably, the fan assembly includes a wind shield, which is fixed to the bottom of the rectangular frame beam by bolts, a cooling fan is installed on the wind shield, and a protective net is provided at the bottom of the wind shield.

[0010] Preferably, a water temperature sensor is provided on the water outlet pipe of the radiator.

[0011] The present invention also designs a hydrogen stack circulating cooling system, comprising an expansion water tank, a hydrogen stack cooling module and the hydrogen fuel vehicle liquid cooling device which are interconnected, the expansion water tank transports coolant to the hydrogen stack cooling module, the hydrogen stack cooling module is provided with a hydrogen stack water inlet pipe and a hydrogen stack water outlet pipe, the hydrogen stack water inlet pipe is provided with a circulating water pump, the hydrogen stack water outlet pipe and the hydrogen stack water inlet pipe are respectively connected to the radiator water inlet pipe and the radiator water outlet pipe to form a liquid cooling circulation system.

[0012] Preferably, a liquid filling port is provided on the top of the expansion water tank, a liquid filling cap is provided on the liquid filling port, a water tank water outlet pipe is provided on the bottom of the expansion water tank, and the water tank water outlet pipe is connected to the hydrogen stack water inlet pipe.

[0013] Preferably, a pressure relief valve is provided on the liquid filling cap. A radiator pressure relief pipe and a hydrogen stack pressure relief pipe are provided on the expansion water tank, the other end of the pressure relief pipe is connected to the water outlet manifold, and the other end of the hydrogen stack pressure relief pipe is connected to the hydrogen stack cooling module. The pressure of the hydrogen stack circulating cooling system is adjusted by the pressure relief valve, the radiator pressure relief pipe and the hydrogen stack pressure relief pipe to ensure that the coolant circulates normally between the hydrogen stack cooling module and the radiator.

[0014] Preferably, a coolant filter is provided on the water inlet pipe of the hydrogen stack to filter out impurities in the coolant.

[0015] Preferably, a temperature control valve is provided on the hydrogen stack outlet pipe, and the temperature control valve automatically adjusts the valve size according to the temperature of the coolant in the hydrogen stack outlet pipe, thereby controlling the flow rate of the coolant in the system.

[0016] Beneficial effects of the present invention:

[0017] 1. The present invention can effectively solve the problem of large heat dissipation demand of hydrogen fuel vehicles by efficiently integrating a liquid cooling radiator, a fan assembly, a hydrogen stack cooling module and a circulating water pump.

[0018] 2. Compared with traditional automobile radiators, the hydrogen fuel cell vehicle liquid cooling device of the present invention has special requirements on system insulation because the coolant of the hydrogen fuel cell structure needs to flow through the water interlayer channels on both sides of the bipolar plate. In this process, the ion content of the coolant will increase, its conductivity will increase, and the insulation of the system will decrease. Therefore, special requirements are placed on the insulation of the system. The radiator water outlet pipe, the first water inlet branch pipe and the third water inlet branch pipe are insulating silicone tubes, insulating fixing frames and insulating shock-absorbing pads to meet the insulation requirements of hydrogen fuel vehicles, thereby reducing the conductivity of the coolant and improving the insulation level of the system.

[0019] 3. The liquid-cooled radiator of the present invention is installed horizontally. The arrangement of the heat sink fins of the horizontal radiator makes the flow path of the coolant in the radiator shorter and the heat transfer efficiency higher. In addition, the flow direction of the coolant in the cross-flow radiator is perpendicular to the flow direction of the air. When the air flows through the radiator, it is easier to take away the heat, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of a liquid cooling device for a hydrogen fuel vehicle according to the present invention;

[0021] Figure 2 A bottom view of the liquid cooling device for a hydrogen fuel vehicle of the present invention;

[0022] Figure 3 is a three-dimensional diagram of the liquid cooling radiator of the present invention;

[0023] Figure 4 for Figure 3 Partial explosion effect diagram;

[0024] Figure 5 A schematic diagram of the connection relationship of the hydrogen stack circulating cooling system of the present invention;

[0025] Figure 6 is a three-dimensional diagram of an expansion water tank of the present invention;

[0026] Reference numerals:

[0027] 1 liquid cooling radiator, 11 rectangular frame beam, 12 water inlet distribution bin, 13 water outlet confluence bin, 14 heat pipe, 15 radiator water inlet pipe, 151 first water inlet branch pipe, 152 second water inlet branch pipe, 153 third water inlet branch pipe, 154 insulation fixing frame, 16 radiator water outlet pipe, 161 water temperature sensor, 17 insulation shock pad,

[0028] 2 fan assembly, 21 wind shield, 22 cooling fan, 23 protective net,

[0029] 3 expansion water tank, 31 filling cap, 311 pressure relief valve, 32 water tank outlet pipe, 33 radiator pressure relief pipe, 34 hydrogen stack pressure relief pipe,

[0030] 4 hydrogen stack cooling module, 41 hydrogen stack water inlet pipe, 42 hydrogen stack water outlet pipe,

[0031] 5. Circulating water pump,

[0032] 6 Coolant filter,

[0033] 7. Temperature control valve. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] 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 the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] Example 1

[0041] like Figures 1 to 4 The hydrogen fuel vehicle liquid cooling device shown includes a liquid cooling radiator 1, a fan assembly 2 is fixed at the bottom of the liquid cooling radiator 1, and the liquid cooling radiator 1 includes a rectangular frame beam 11, and a mounting frame 111 is provided on the rectangular frame beam 11, and the mounting frame 111 fixes the liquid cooling radiator 1 to the bottom of two longitudinal beams of the vehicle. The inner walls of the rectangular frame beam 11 are provided with a water inlet shunt compartment 12 and a water outlet confluence compartment 13 at both ends, and a plurality of heat dissipation pipes 14 are connected between the water inlet shunt compartment 12 and the water outlet confluence compartment 13, a radiator water inlet pipe 15 is provided on the water inlet shunt compartment 12, a radiator water outlet pipe 16 is provided on the water outlet confluence compartment 13, and a water temperature sensor 161 is provided on the radiator water outlet pipe 16.

[0042] A plurality of insulating shock-absorbing pads 17 are provided between the water inlet diversion bin 12 and the water outlet confluence bin 13 and the rectangular frame beam 11; the radiator water inlet pipe 15 comprises a first water inlet branch pipe 151, a second water inlet branch pipe 152 and a third water inlet branch pipe 153 which are sequentially connected along the liquid flow direction, the first water inlet branch pipe 151 and the third water inlet branch pipe 153 are insulating silicone tubes, the second water inlet branch pipe 152 is a steel pipe, and two insulating fixing frames 154 are provided on the second water inlet branch pipe 152; the radiator water outlet pipe 16 is an insulating silicone tube.

[0043] The fan assembly 2 includes a wind shield 21 , which is fixed to the bottom of the rectangular frame beam 11 by bolts. A heat dissipation fan 22 is installed on the wind shield 21 , and a protective net 23 is provided at the bottom of the wind shield 21 .

[0044] Example 2

[0045] like Figures 5-6The hydrogen stack circulation cooling system shown includes an expansion water tank 3, a hydrogen stack cooling module 4 and the hydrogen fuel vehicle liquid cooling device in Example 1 which are interconnected. The expansion water tank 3 transports the coolant to the hydrogen stack cooling module 4. The hydrogen stack cooling module 4 is provided with a hydrogen stack water inlet pipe 41 and a hydrogen stack water outlet pipe 42. The hydrogen stack water inlet pipe 41 is provided with a circulating water pump 5. The hydrogen stack water outlet pipe 42 and the hydrogen stack water inlet pipe 41 are respectively connected to the radiator water inlet pipe 15 and the radiator water outlet pipe 16 to form a liquid cooling circulation system.

[0046] A liquid filling port is provided at the top of the expansion water tank 3 , a liquid filling cap 31 is provided on the liquid filling port, a water tank outlet pipe 32 is provided at the bottom of the expansion water tank 3 , and the water tank outlet pipe 32 is connected to the hydrogen stack water inlet pipe 41 .

[0047] A coolant filter 6 is provided on the hydrogen stack water inlet pipe 41. A temperature control valve 7 is provided on the hydrogen stack water outlet pipe 42.

[0048] The filling cap 31 is provided with a pressure relief valve 311. The expansion water tank 3 is provided with a radiator pressure relief pipe 33 and a hydrogen stack pressure relief pipe 34, the other end of the radiator pressure relief pipe 33 is connected to the water outlet manifold 13, and the other end of the hydrogen stack pressure relief pipe 34 is connected to the hydrogen stack cooling module 4.

[0049] The process flow of Example 2 when working is described below:

[0050] Open the filling cap 31 on the top of the expansion water tank 3, add coolant from the filling port, and the coolant enters the hydrogen stack cooling module 4 through the water tank outlet pipe 32 and the hydrogen stack inlet pipe 41 in turn. After the hydrogen stack is cooled and heated in the hydrogen stack cooling module 4, it flows out from the hydrogen stack outlet pipe 42. The hydrogen stack outlet pipe 42 is provided with a temperature control valve 7. The temperature control valve 7 will automatically adjust the valve size according to the temperature of the coolant in the hydrogen stack outlet pipe 42, so as to control the flow rate of the coolant in the system.

[0051] The hydrogen stack outlet pipe 42 inputs the heated coolant into the water inlet diversion chamber 12 through the radiator water inlet pipe 15. The water inlet diversion chamber 12 diverts the coolant to the heat dissipation pipe 14 to take away the heat through the fan assembly 2. The cooled coolant, under the action of the circulating water pump 5, successively passes through the radiator water outlet pipe 16 and the hydrogen stack water inlet pipe 41 into the hydrogen stack cooling module 4 to cool the hydrogen stack. The water temperature sensor 161 on the radiator water outlet pipe 16 records the temperature of the coolant at this time and transmits the signal to the vehicle control system. The vehicle control system controls the circulating water pump 5 and the fan assembly 2 to adjust the coolant flow rate and the speed of the cooling fan 22 according to the temperature of the coolant at this time.

[0052] When the pressure in the hydrogen stack circulating cooling system is too high, the entire circulating system is depressurized through the radiator pressure relief pipe 33 , the hydrogen stack pressure relief pipe 34 and the pressure relief valve 311 .

[0053] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A liquid cooling device for a hydrogen fuel vehicle, characterized in that: The invention comprises a liquid-cooled radiator (1), a fan assembly (2) being fixed at the bottom of the liquid-cooled radiator (1), the liquid-cooled radiator (1) comprising a rectangular frame beam (11), a water inlet diversion chamber (12) and a water outlet confluence chamber (13) being provided at both ends of the inner wall of the rectangular frame beam (11), a plurality of heat dissipation pipes (14) being connected between the water inlet diversion chamber (12) and the water outlet confluence chamber (13), a radiator water inlet pipe (15) being provided on the water inlet diversion chamber (12), and a radiator water outlet pipe (16) being provided on the water outlet confluence chamber (13).

2. The hydrogen fuel vehicle liquid cooling device according to claim 1, characterized in that: A plurality of insulating shock-absorbing pads (17) are provided between the water inlet branching bin (12) and the water outlet converging bin (13) and the rectangular frame beam (11); the radiator water inlet pipe (15) comprises a first water inlet branch pipe (151), a second water inlet branch pipe (152) and a third water inlet branch pipe (153) which are sequentially connected along the liquid flow direction; the first water inlet branch pipe (151) and the third water inlet branch pipe (153) are insulating silicone tubes, the second water inlet branch pipe (152) is a steel pipe, and two insulating fixing frames (154) are provided on the second water inlet branch pipe (152); and the radiator water outlet pipe (16) is an insulating silicone tube.

3. The hydrogen fuel vehicle liquid cooling device according to claim 1 is characterized in that: The rectangular frame beam (11) is provided with a mounting frame (111), and the mounting frame (111) fixes the liquid cooling radiator (1) horizontally on the bottom of two longitudinal beams of the automobile.

4. The hydrogen fuel vehicle liquid cooling device according to claim 1, characterized in that: The fan assembly (2) comprises a wind shield (21), which is fixed to the bottom of the rectangular frame beam (11) by bolts, and a heat dissipation fan (22) is installed on the wind shield (21). A protective net (23) is provided at the bottom of the wind shield (21).

5. The hydrogen fuel vehicle liquid cooling device according to claim 1, characterized in that: The radiator water outlet pipe (16) is provided with a water temperature sensor (161).

6. A hydrogen reactor liquid cooling circulation system, characterized in that: The invention comprises an expansion water tank (3), a hydrogen stack cooling module (4) and a hydrogen fuel vehicle liquid cooling device as claimed in claim 1, which are interconnected. The expansion water tank (3) transports coolant to the hydrogen stack cooling module (4). The hydrogen stack cooling module (4) is provided with a hydrogen stack water inlet pipe (41) and a hydrogen stack water outlet pipe (42). The hydrogen stack water inlet pipe (41) is provided with a circulating water pump (5). The hydrogen stack water outlet pipe (42) and the hydrogen stack water inlet pipe (41) are respectively connected to a radiator water inlet pipe (15) and a radiator water outlet pipe (16) to form a liquid cooling circulation system.

7. The hydrogen stack liquid cooling circulation system according to claim 6, characterized in that: The top of the expansion water tank (3) is provided with a liquid filling port, the liquid filling port is provided with a liquid filling cover (31), the bottom of the expansion water tank (3) is provided with a water tank outlet pipe (32), and the water tank outlet pipe (32) is connected to the hydrogen stack water inlet pipe (41).

8. The hydrogen stack liquid cooling circulation system according to claim 7, characterized in that: The liquid filling cap (31) is provided with a pressure relief valve (311); the expansion water tank (3) is provided with a radiator pressure relief pipe (33) and a hydrogen stack pressure relief pipe (34); the other end of the radiator pressure relief pipe (33) is in communication with a water outlet confluence bin (13), and the other end of the hydrogen stack pressure relief pipe (34) is in communication with a hydrogen stack cooling module (4).

9. The hydrogen stack liquid cooling circulation system according to claim 6, characterized in that: A coolant filter (6) is provided on the hydrogen stack water inlet pipe (41).

10. The hydrogen stack liquid cooling circulation system according to claim 6, characterized in that: The hydrogen stack water outlet pipe (42) is provided with a temperature control valve (7).

Images