Battery condensation system and vehicle

Abstract

The invention relates to a battery condensation system and a vehicle, the battery condensation system comprises a cathode condensation loop, and the cathode condensation loop comprises an evaporator and a heat exchanger; the evaporator comprises a heating chamber and an evaporation chamber, the input end of the evaporation chamber is used for being connected with a liquid hydrogen tank, the output end of the evaporation chamber is used for being connected with a cell stack, and the input end of the heating chamber is used for being connected with a heat exchange medium output pipe of the cell stack; the heat exchanger comprises a heat exchange channel and a stack outlet air channel, the input end of the heat exchange channel is connected with the output end of the heating chamber, the output end of the heat exchange channel is used for being connected with a heat exchange medium input pipe of the cell stack, and the input end of the stack outlet air channel is used for being connected with a cathode outlet of the cell stack. And the output end of the stack outlet air channel is connected with a tail discharge pipe. The air discharged from the cathode outlet of the cell stack is condensed by the heat exchange medium cooled by absorbing the cold energy of the liquid hydrogen through the heat exchanger, so that the saturated steam condensation gradient of the cathode outlet of the cell stack is improved, and the drainage capacity of the cell stack is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery thermal management, and in particular, to a battery condensation system and a vehicle. Background Art

[0002] For hydrogen fuel cells, it is the place where the hydrogen and oxygen electrochemical reaction takes place, and its products are water and external current. Water will be carried from the inlet of the battery stack to the outlet of the battery stack along with the reaction gas, and the water content inside the battery will gradually increase. If the drainage is not smooth, it is very easy to cause flooding at the tail of the battery stack, which will directly affect the battery performance. Summary of the invention

[0003] The purpose of the present disclosure is to provide a battery condensation system and a vehicle. When the output power of the battery stack is greater than a preset power threshold, the cathode condensation circuit is controlled by a controller to be turned on to condense the air discharged from the cathode outlet of the battery stack. The battery condensation system uses an evaporator to heat the hotter heat exchange medium transported by the heat exchange medium output pipe of the battery stack with liquid hydrogen, so that the liquid hydrogen evaporates into gaseous hydrogen, and cools the heat exchange medium by the cold energy of the liquid hydrogen, and then uses a heat exchanger to condense the air discharged from the cathode outlet of the battery stack with the cooled heat exchange medium, so as to improve the saturated steam condensation gradient at the cathode outlet of the battery stack, improve the drainage capacity of the battery stack, and thus improve the battery performance.

[0004] In order to achieve the above object, according to a first aspect of the present disclosure, a battery condensation system is provided, comprising:

[0005] a cathode condensation circuit, the cathode condensation circuit comprising an evaporator and a heat exchanger;

[0006] The evaporator comprises a heating chamber and an evaporation chamber, the input end of the evaporation chamber is used to be connected to the liquid hydrogen tank, the output end of the evaporation chamber is used to be connected to the battery stack, and the input end of the heating chamber is used to be connected to the heat exchange medium output pipe of the battery stack;

[0007] The heat exchanger comprises a heat exchange channel and an out-of-stack air channel, the input end of the heat exchange channel is connected to the output end of the heating chamber, the output end of the heat exchange channel is used to be connected to the heat exchange medium input pipe of the battery stack, the input end of the out-of-stack air channel is used to be connected to the cathode outlet of the battery stack, and the output end of the out-of-stack air channel is used to be connected to the tail exhaust pipe;

[0008] A sensor, the sensor being connected to the battery stack and used to detect the output power of the battery stack;

[0009] A controller is connected to the sensor and the cathode condensation circuit signal, and is used to obtain the output power of the battery stack detected by the sensor, and when the output power of the battery stack is greater than a preset power threshold, control the cathode condensation circuit to be turned on, so as to condense the air discharged from the cathode outlet of the battery stack.

[0010] Optionally, the input end of the heat exchange channel is connected to the output end of the heating chamber via a first pipeline, a first control valve is provided on the first pipeline, and the first control valve is connected to the controller signal;

[0011] The controller is used to control the first control valve to connect the input end of the heat exchange channel and the output end of the heating chamber, so as to control the cathode condensation circuit to condense the air discharged from the cathode outlet of the battery stack.

[0012] Optionally, the cathode condensation loop further includes a second pipeline;

[0013] The first end of the second pipeline is connected to the first pipeline, and the second end of the second pipeline is connected to the heat exchange medium output pipe.

[0014] Optionally, the first control valve is a three-way control valve, and the first pipeline includes a first sub-pipeline and a second sub-pipeline;

[0015] The port A of the first control valve is connected to the output end of the first sub-pipeline, and the input end of the first sub-pipeline is connected to the output end of the heating chamber;

[0016] The port B of the first control valve is connected to the input end of the second sub-pipeline, and the output end of the second sub-pipeline is connected to the input end of the heat exchange channel;

[0017] The C port of the first control valve is connected to the input end of the second pipeline, and the output end of the second pipeline is connected to the heat exchange medium output pipe;

[0018] The controller is used to connect the input end of the heat exchange channel and the output end of the heating chamber by controlling the A port and the B port of the first control valve. The controller is also used to connect the output end of the heating chamber and the heat exchange medium output pipe by controlling the A port and the C port of the first control valve.

[0019] Optionally, the battery condensation system further comprises a main cooling circuit;

[0020] The first end of the main cooling loop is connected to the heat exchange input port of the battery stack, and the second end of the main cooling loop is connected to the heat exchange output port of the battery stack;

[0021] The controller is connected to the main cooling circuit signal and is used for controlling the main cooling circuit to be turned on to cool the battery stack when the output power of the battery stack is less than or equal to a preset power threshold, and for controlling both the main cooling circuit and the cathode condensation circuit to be turned on to cool the battery stack and condense the air discharged from the cathode outlet of the battery stack when the output power of the battery stack is greater than the preset power threshold.

[0022] Optionally, the main cooling circuit includes the heat exchange medium input pipe, the heat exchange medium output pipe, a circulation pump and a heat dissipation device;

[0023] The first end of the heat exchange medium input pipe is used to be connected to the heat exchange input port of the battery stack, and the second end of the heat exchange medium input pipe is connected to the output end of the heat dissipation device;

[0024] The first end of the heat exchange medium output pipe is used to be connected to the heat exchange output port of the battery stack, and the second end of the heat exchange medium output pipe is connected to the input end of the heat dissipation device;

[0025] The circulation pump is arranged on any one of the heat exchange medium input pipe and the heat exchange medium output pipe.

[0026] Optionally, a second control valve is provided on the heat exchange medium input pipe, and the second control valve is connected to the controller signal;

[0027] The controller is used to connect the output end of the heat dissipation device with the heat exchange input port of the battery stack by controlling the second control valve, so as to control the connection of the main cooling circuit to cool the battery stack.

[0028] Optionally, the heat dissipation device includes a radiator and a heat dissipation fan;

[0029] The input end of the radiator is connected to the second end of the heat exchange medium output pipe, and the output end of the radiator is connected to the second end of the heat exchange medium input pipe;

[0030] There are at least two cooling fans, which are arranged on the side of the radiator;

[0031] The controller is connected to the heat dissipation fan signal, and is used to control the heat dissipation fan to work when the output end of the heat dissipation device is connected to the heat exchange input port of the battery stack.

[0032] Optionally, the battery condensation system further comprises a condenser;

[0033] The input end of the condenser is used to be connected to the output end of the air compressor, and the output end of the condenser is used to be connected to the battery stack. The condenser is used to cool the input compressed air before inputting it into the battery stack.

[0034] According to a second aspect of the present disclosure, a vehicle is provided, comprising an air compressor, a battery stack, a tail pipe, a liquid hydrogen tank, and the battery condensation system provided in the first aspect, wherein the battery condensation system is connected to the air compressor, the battery stack, the tail pipe, and the liquid hydrogen tank, respectively.

[0035] Through the above technical solution, when the output power of the battery stack is greater than the preset power threshold, the cathode condensation circuit is controlled by the controller to be turned on, and the air discharged from the cathode outlet of the battery stack is condensed. Wherein, the cathode condensation circuit includes an evaporator and a heat exchanger, and the evaporator includes a heating chamber and an evaporation chamber. The input end of the evaporation chamber is used to connect with the liquid hydrogen tank, the output end of the evaporation chamber is used to connect with the battery stack, and the input end of the heating chamber is used to connect with the heat exchange medium output pipe of the battery stack, so that the evaporator exchanges heat with the liquid hydrogen with the hotter heat exchange medium transported by the heat exchange medium output pipe of the battery stack, so that the liquid hydrogen evaporates into gaseous hydrogen, and the heat exchange medium is cooled by the cold energy of the liquid hydrogen. The heat exchanger includes a heat exchange channel and an outlet air channel. The input end of the heat exchange channel is connected to the output end of the heating chamber, and the output end of the heat exchange channel is used to connect to the heat exchange medium input pipe of the battery stack. The input end of the outlet air channel is used to connect to the cathode outlet of the battery stack, and the output end of the outlet air channel is used to connect to the tail exhaust pipe, so that the cooled heat exchange medium can be used to condense the air discharged from the cathode outlet of the battery stack through the heat exchanger, so as to increase the saturated steam condensation gradient at the cathode outlet of the battery stack, improve the drainage capacity of the battery stack, and thus improve the battery performance.

[0036] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0038] Figure 1 It is a structural schematic diagram of a battery condensation system provided according to an embodiment of the present disclosure.

[0039] Figure 2 It is a structural schematic diagram of a battery condensation system provided according to another embodiment of the present disclosure.

[0040] Description of Reference Numerals

[0041] 1. Evaporator; 2. Heat exchanger; 3. Liquid hydrogen tank; 4. Battery stack; 5. First control valve; 51. Port A; 52. Port B; 53. Port C; 61. Heat exchange medium output pipe; 62. Heat exchange medium input pipe; 63. Second pipeline; 64. First sub-pipeline; 65. Second sub-pipeline; 71. Circulation pump; 72. Radiator; 73. Cooling fan; 8. Condenser; 9. Air compressor; 10. Tail exhaust pipe. DETAILED DESCRIPTION

[0042] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and do not have to be understood as a specific order or sequence. In addition, in the description with reference to the drawings, the same symbols in different drawings represent the same elements.

[0044] For hydrogen fuel cells, it is the place where the hydrogen and oxygen electrochemical reaction takes place, and its products are water and external current. Water will be carried from the inlet of the battery stack to the outlet of the battery stack along with the reaction gas, and the water content inside the battery will gradually increase. If the drainage is not smooth, it is very easy to cause flooding at the tail of the battery stack, which will directly affect the battery performance.

[0045] In the related art, a humidifier structure is connected to the cathode outlet of the fuel cell, and the inlet air is humidified by diffusion using the humidity concentration gradient of the inlet and outlet air. Since the transfer of water molecules is completed by using the membrane tube structure and the water vapor concentration and pressure gradient, the water vapor partial pressure in the cathode outlet gas decreases slightly, and the effect of assisting drainage of the cathode is poor, and the flooding of the fuel cell cannot be alleviated.

[0046] In view of the above technical problems, the embodiments of the present disclosure provide a battery condensation system and a vehicle. When the output power of the battery stack is greater than a preset power threshold, the cathode condensation circuit is controlled by a controller to be turned on to condense the air discharged from the cathode outlet of the battery stack. The battery condensation system uses an evaporator to heat liquid hydrogen with a relatively hot heat exchange medium transported by a heat exchange medium output pipe of the battery stack, so that the liquid hydrogen evaporates into gaseous hydrogen, and cools the heat exchange medium with the cold energy of the liquid hydrogen, and then uses a heat exchanger to condense the air discharged from the cathode outlet of the battery stack with the cooled heat exchange medium, so as to improve the saturated steam condensation gradient at the cathode outlet of the battery stack, improve the drainage capacity of the battery stack, and thus improve the battery performance.

[0047] Figure 1 is a schematic diagram of the structure of a battery condensation system provided according to an embodiment of the present disclosure, such as Figure 1As shown, the battery condensation system includes:

[0048] A cathode condensation circuit, the cathode condensation circuit comprises an evaporator 1 and a heat exchanger 2;

[0049] The evaporator 1 includes a heating chamber and an evaporation chamber, the input end of the evaporation chamber is used to connect with the liquid hydrogen tank 3, the output end of the evaporation chamber is used to connect with the battery stack 4, and the input end of the heating chamber is used to connect with the heat exchange medium output pipe 61 of the battery stack 4;

[0050] The heat exchanger 2 includes a heat exchange channel and an outflow air channel. The input end of the heat exchange channel is connected to the output end of the heating chamber, the output end of the heat exchange channel is used to connect to the heat exchange medium input pipe 62 of the battery stack 4, the input end of the outflow air channel is used to connect to the cathode outlet of the battery stack 4, and the output end of the outflow air channel is used to connect to the tail exhaust pipe 10.

[0051] A sensor, the sensor is used to be connected to the battery stack 4 and is used to detect the output power of the battery stack 4;

[0052] The controller is connected to the sensor and the cathode condensation circuit signal, and is used to obtain the output power of the battery stack 4 detected by the sensor, and when the output power of the battery stack 4 is greater than a preset power threshold, control the cathode condensation circuit to be turned on, and condense the air discharged from the cathode outlet of the battery stack 4.

[0053] In this embodiment, if Figure 1 As shown, the direction of the arrow in the figure represents the flow direction of the material in the pipeline. The battery condensation system includes a cathode condensation circuit, which can be used to use the heat of the battery stack 4 reaction to heat and vaporize the liquid hydrogen, and use the cold energy of the liquid hydrogen to condense the air at the cathode outlet. In this way, the air at the cathode outlet of the battery stack 4 can be condensed while the heat energy of the battery stack 4 reaction and the cold energy of the liquid hydrogen can be reasonably utilized, thereby improving the saturated steam condensation gradient at the cathode outlet of the battery stack 4, improving the drainage capacity of the battery stack 4, avoiding flooding at the tail of the battery stack 4, and improving the battery performance.

[0054] Among them, the cathode condensation circuit includes an evaporator 1 and a heat exchanger 2, and the evaporator 1 and the heat exchanger 2 are connected by a pipeline. Among them, the evaporator 1 includes a heating chamber and an evaporation chamber. The heating chamber can be arranged outside the evaporation chamber, for example, the heating chamber wraps the evaporation chamber so as to obtain a better heating effect.

[0055] In one embodiment, the input end of the evaporation chamber is used to connect with the liquid hydrogen tank 3 so that the liquid hydrogen can be input from the liquid hydrogen tank 3 to the evaporation chamber. The output end of the evaporation chamber is used to connect with the battery stack 4, and the input end of the heating chamber is used to connect with the heat exchange medium output pipe 61 of the battery stack 4 so that the heat exchange medium that absorbs the heat released by the reaction of the battery stack 4 can be transported from the heat exchange medium output pipe 61 to the heating chamber. At this time, the temperature of the heat exchange medium is relatively high. The high-temperature heat exchange medium heats the liquid hydrogen in the evaporation chamber in the heating chamber so that the liquid hydrogen evaporates into hydrogen. At the same time, the liquid hydrogen evaporates and absorbs the heat of the heat exchange medium, so that the high-temperature heat exchange medium in the heating chamber cools down, and the heat exchange medium in the heating chamber that absorbs the cold energy of the liquid hydrogen becomes a low-temperature heat exchange medium. The hydrogen is then transported to the battery stack 4 so as to be used as a raw material for the hydrogen-oxygen electrochemical reaction of the hydrogen fuel cell.

[0056] The heat exchanger 2 includes a heat exchange channel and an air outlet channel, so that the heat exchange medium in the heat exchange channel can exchange heat with the air in the air outlet channel. Among them, the input end of the heat exchange channel is connected to the output end of the heating chamber, so that the low-temperature heat exchange medium output from the heating chamber can be input into the heat exchange channel. The input end of the air outlet channel is used to connect with the cathode outlet of the battery stack 4, and the air discharged from the cathode outlet of the battery stack 4 can be input into the air outlet channel, so that the air in the air outlet channel is condensed by the low-temperature heat exchange medium in the heat exchange channel. The output end of the heat exchange channel is used to connect with the heat exchange medium input pipe 62 of the battery stack 4. After the low-temperature heat exchange medium in the heat exchange channel condenses the air in the air outlet channel, it can also be input into the battery stack 4 through the heat exchange medium input pipe 62 of the battery stack 4, absorb the heat released by the reaction of the battery stack 4, and cool the battery stack 4. The output end of the air outlet channel of the battery stack 4 is used to connect with the tail exhaust pipe 10, and the condensed air can be directly connected to the tail exhaust pipe 10 so as to be output through the tail exhaust pipe 10.

[0057] The battery condensation system in this embodiment uses the evaporator 1 to transfer the hotter heat exchange medium transported by the heat exchange medium output pipe 61 of the battery stack 4 to liquid hydrogen for heat exchange, so that the liquid hydrogen evaporates into gaseous hydrogen, and the heat exchange medium is cooled by the cold energy of the liquid hydrogen, and then the cooled heat exchange medium is used to condense the air discharged from the cathode outlet of the battery stack 4 through the heat exchanger 2, so as to increase the saturated steam condensation gradient at the cathode outlet of the battery stack 4, improve the drainage capacity of the battery stack 4, and thus improve the battery performance.

[0058] In order to improve the automatic control capability, the cathode condensation loop is used to condense the air discharged from the cathode outlet of the battery stack 4 when appropriate. The battery condensation system may also include a sensor and a controller, wherein the sensor is used to connect to the battery stack 4 and can detect the output power of the battery stack 4. The controller is connected to the sensor and the cathode condensation loop signal, and can obtain the output power of the battery stack 4 detected by the sensor. When the output power of the battery stack 4 is greater than the preset power threshold, at this time, more water is generated inside the battery, which is easy to cause poor drainage and flooding at the tail of the battery stack 4. The cathode condensation loop is controlled by the controller to be turned on, and the air discharged from the cathode outlet of the battery stack 4 is condensed, so as to improve the saturated steam condensation gradient at the cathode outlet of the battery stack 4, improve the drainage capacity of the battery stack 4, avoid flooding, and thus improve the battery performance.

[0059] In a possible implementation, the input end of the heat exchange channel is connected to the output end of the heating chamber through a first pipe so that the heat exchange channel and the heating chamber can be connected to input the low-temperature heat exchange medium in the heating chamber into the heat exchange channel.

[0060] A first control valve 5 is provided on the first pipeline, and the first control valve 5 is connected to the controller signal. The controller can control the first control valve 5 to open, thereby connecting the input end of the heat exchange channel and the output end of the heating chamber, so as to control the cathode condensation circuit to condense the air discharged from the cathode outlet of the battery stack 4 with the cooled heat exchange medium through the heat exchanger 2.

[0061] In a possible embodiment, the cathode condensation circuit also includes a second pipe 63, a first end of the second pipe 63 is connected to the first pipe, and a second end of the second pipe 63 is connected to the heat exchange medium output pipe 61, so that the cooled heat exchange medium output from the heating chamber can be input into the heat exchange medium output pipe 61 through the second pipe 63, so as to be able to mix with the heat exchange medium in the heat exchange medium output pipe 61 with a higher temperature, thereby quickly reducing the temperature of the heat exchange medium in the heat exchange medium output pipe 61.

[0062] In a possible implementation, the first control valve 5 is a three-way control valve, and the first pipeline includes a first sub-pipeline 64 and a second sub-pipeline 65 .

[0063] The A port 51 of the first control valve 5 is connected to the output end of the first sub-pipeline 64 , and the input end of the first sub-pipeline 64 is connected to the output end of the heating chamber, so that the heating chamber and the A port 51 of the first control valve 5 are connected through the first sub-pipeline 64 .

[0064] The B port 52 of the first control valve 5 is connected to the input end of the second sub-pipeline 65 , and the output end of the second sub-pipeline 65 is connected to the input end of the heat exchange channel, so that the B port 52 of the control valve is connected to the heat exchange channel through the second sub-pipeline 65 .

[0065] The C port 53 of the first control valve 5 is connected to the input end of the second pipeline 63 , and the output end of the second pipeline 63 is connected to the heat exchange medium output pipe 61 , so that the C port 53 of the first control valve 5 and the heat exchange medium output pipe 61 are connected through the second pipeline 63 .

[0066] The controller is connected to the first control valve 5, and can control the connection and disconnection between the A port 51 and the B port 52 of the first control valve 5, and control the connection and disconnection between the A port 51 and the C port 53 of the first control valve 5. The controller can connect the input end of the heat exchange channel with the output end of the heating chamber by controlling the connection between the A port 51 and the B port 52 of the first control valve 5, so as to control the connection of the cathode condensation circuit and condense the air discharged from the cathode outlet of the battery stack 4. The controller can also control the connection between the A port 51 and the C port 53 of the first control valve 5, and input the cooled heat exchange medium output from the heating chamber into the heat exchange medium output pipe 61 through the second pipe 63, so as to mix with the heat exchange medium in the heat exchange medium output pipe 61 with a higher temperature, thereby quickly reducing the temperature of the heat exchange medium in the heat exchange medium output pipe 61.

[0067] Figure 2 is a schematic diagram of the structure of a battery condensation system provided according to another embodiment of the present disclosure, such as Figure 2 As shown, the arrow direction in the figure indicates the flow direction of the material in the pipeline. In a possible implementation, the battery condensation system further includes a main cooling loop, a first end of the main cooling loop is connected to the heat exchange input port of the battery stack 4, and a second end of the main cooling loop is connected to the heat exchange output port of the battery stack 4. The main cooling loop is used to absorb the heat released by the reaction of the battery stack 4 by using a heat exchange medium, so as to reduce the temperature of the battery stack 4.

[0068] The controller is connected to the main cooling circuit signal, and is used to control the main cooling circuit to be turned on when the output power of the battery stack 4 is less than or equal to the preset power threshold, so as to cool the battery stack 4. In this case, less water is generated inside the battery stack 4, and the drainage problem can be ignored, and the battery stack 4 is cooled only by the main cooling circuit. When the output power of the battery stack 4 is greater than the preset power threshold, more water is generated inside the battery stack 4, and the main cooling circuit and the cathode condensation circuit can be controlled by the controller to be turned on to cool the battery stack 4 and condense the air discharged from the cathode outlet of the battery stack 4.

[0069] In a possible implementation, the main cooling circuit includes a heat exchange medium input pipe 62 , a heat exchange medium output pipe 61 , a circulation pump 71 , and a heat dissipation device.

[0070] Among them, the first end of the heat exchange medium input pipe 62 is used to connect with the heat exchange input port of the battery stack 4, and the second end of the heat exchange medium input pipe 62 is connected to the output end of the heat dissipation device. The heat exchange medium input pipe 62 can input the heat exchange medium cooled by the radiator 72 into the battery stack 4, so as to cool the battery stack 4.

[0071] The first end of the heat exchange medium output pipe 61 is used to be connected to the heat exchange output port of the battery stack 4, and the second end of the heat exchange medium output pipe 61 is connected to the input end of the heat dissipation device. The heat exchange medium output pipe 61 can input the high-temperature heat exchange medium that has absorbed the heat of the battery stack 4 into the heat dissipation device, so as to dissipate heat and cool the high-temperature heat exchange medium through the heat dissipation device.

[0072] The circulation pump 71 is arranged on either the heat exchange medium input pipe 62 or the heat exchange medium output pipe 61, that is, the circulation pump 71 can be arranged on the heat exchange medium input pipe 62 or on the heat exchange medium output pipe 61, so as to provide pressure for the flow of the heat exchange medium in the pipeline through the circulation pump 71.

[0073] In a possible implementation manner, a second control valve is provided on the heat exchange medium input pipe 62 , and the second control valve is connected to the controller signal.

[0074] The controller is used to control the second control valve to open, thereby connecting the output end of the heat dissipation device with the heat exchange input port of the battery stack 4, so as to control the main cooling circuit to be connected and cool the battery stack 4.

[0075] In a possible implementation, the heat dissipation device includes a heat sink 72 and a heat dissipation fan 73;

[0076] The input end of the radiator 72 is connected to the second end of the heat exchange medium output pipe 61, and the output end of the radiator 72 is connected to the second end of the heat exchange medium input pipe 62. The radiator 72 has a certain heat dissipation function and can naturally dissipate heat and cool the heat exchange medium flowing through the radiator 72.

[0077] There are at least two cooling fans 73, which are arranged on the side of the radiator 72. The controller is connected to the cooling fan 73 signal, and is used to control the cooling fan 73 to work when the output end of the heat dissipation device is connected to the heat exchange input port of the battery stack 4. The cooling fan 73 can blow air to the radiator 72 to speed up the air flow so as to cool the heat exchange medium in the radiator 72.

[0078] In a possible embodiment, the battery condensation system also includes a condenser 8; the input end of the condenser 8 is used to be connected to the output end of the air compressor 9, and the output end of the condenser 8 is used to be connected to the battery stack 4. The condenser 8 is used to cool the input compressed air before inputting it into the battery stack 4, so as to reduce the temperature of the compressed air input into the battery stack 4 and avoid the temperature of the air input into the battery stack 4 being too high.

[0079] According to a second aspect of the present disclosure, a vehicle is provided, comprising an air compressor 9, a battery stack 4, a tail pipe 10, a liquid hydrogen tank 3, and the battery condensation system shown in the above embodiment, wherein the battery condensation system is respectively connected to the air compressor 9, the battery stack 4, the tail pipe 10, and the liquid hydrogen tank 3. Specifically, the battery condensation system comprises a cathode condensation circuit, a heat exchanger 2, a condenser 8, a sensor, and a controller, wherein the cathode condensation circuit comprises an evaporator 1 and a heat exchanger 2, wherein the evaporator 1 is respectively connected to the liquid hydrogen tank 3, the battery stack 4, and the heat exchanger 2, the heat exchanger 2 is connected to the cathode outlet of the battery stack 4 and the tail pipe 10, the sensor is connected to the battery stack 4, the controller is connected to the sensor and the cathode condensation circuit, and the condenser 8 is connected to the battery stack 4.

[0080] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0081] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0082] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery condensation system, characterized in that: include: A cathode condensation circuit, the cathode condensation circuit comprising an evaporator (1) and a heat exchanger (2); The evaporator (1) comprises a heating chamber and an evaporation chamber, the input end of the evaporation chamber is used to connect to a liquid hydrogen tank (3), the output end of the evaporation chamber is used to connect to a battery stack (4), and the input end of the heating chamber is used to connect to a heat exchange medium output pipe (61) of the battery stack (4); The heat exchanger (2) comprises a heat exchange channel and an outlet air channel, the input end of the heat exchange channel is connected to the output end of the heating chamber, the output end of the heat exchange channel is used to connect to the heat exchange medium input pipe (62) of the battery stack (4), the input end of the outlet air channel is used to connect to the cathode outlet of the battery stack (4), and the output end of the outlet air channel is used to connect to the tail exhaust pipe (10); a sensor, the sensor being used to be connected to the battery stack (4) and used to detect the output power of the battery stack (4); A controller, the controller being connected to the sensor and the cathode condensation circuit signal, for obtaining the output power of the battery stack (4) detected by the sensor, and controlling the cathode condensation circuit to be turned on when the output power of the battery stack (4) is greater than a preset power threshold, so as to condense the air discharged from the cathode outlet of the battery stack (4).

2. The battery condensation system according to claim 1, characterized in that: The input end of the heat exchange channel is connected to the output end of the heating chamber via a first pipeline, a first control valve (5) is provided on the first pipeline, and the first control valve (5) is connected to the controller signal; The controller is used to control the first control valve (5) to connect the input end of the heat exchange channel and the output end of the heating chamber, so as to control the connection of the cathode condensation circuit and condense the air discharged from the cathode outlet of the battery stack (4).

3. The battery condensation system according to claim 2, characterized in that: The cathode condensation circuit also includes a second pipeline (63); The first end of the second pipeline (63) is connected to the first pipeline, and the second end of the second pipeline (63) is connected to the heat exchange medium output pipe (61).

4. The battery condensation system according to claim 3, characterized in that: The first control valve (5) is a three-way control valve, and the first pipeline includes a first sub-pipeline (64) and a second sub-pipeline (65); The A port (51) of the first control valve (5) is connected to the output end of the first sub-pipeline (64), and the input end of the first sub-pipeline (64) is connected to the output end of the heating chamber; The B port (52) of the first control valve (5) is connected to the input end of the second sub-pipeline (65), and the output end of the second sub-pipeline (65) is connected to the input end of the heat exchange channel; The C port (53) of the first control valve (5) is connected to the input end of the second pipeline (63), and the output end of the second pipeline (63) is connected to the heat exchange medium output pipe (61); The controller is used to connect the input end of the heat exchange channel and the output end of the heating chamber by controlling the A port (51) and the B port (52) of the first control valve (5). The controller is also used to connect the output end of the heating chamber and the heat exchange medium output pipe (61) by controlling the A port (51) and the C port (53) of the first control valve (5).

5. The battery condensation system according to claim 1, characterized in that: The battery condensation system also includes a primary cooling circuit; The first end of the main cooling loop is connected to the heat exchange input port of the battery stack (4), and the second end of the main cooling loop is connected to the heat exchange output port of the battery stack (4); The controller is connected to the main cooling circuit signal and is used to control the main cooling circuit to be turned on to cool the battery stack (4) when the output power of the battery stack (4) is less than or equal to a preset power threshold, and to control both the main cooling circuit and the cathode condensation circuit to be turned on to cool the battery stack (4) and to condense the air discharged from the cathode outlet of the battery stack (4) when the output power of the battery stack (4) is greater than the preset power threshold.

6. The battery condensation system according to claim 5, characterized in that: The main cooling circuit comprises the heat exchange medium input pipe (62), the heat exchange medium output pipe (61), a circulation pump (71) and a heat dissipation device; The first end of the heat exchange medium input pipe (62) is used to be connected to the heat exchange input port of the battery stack (4), and the second end of the heat exchange medium input pipe (62) is connected to the output end of the heat dissipation device; The first end of the heat exchange medium output pipe (61) is used to be connected to the heat exchange output port of the battery stack (4), and the second end of the heat exchange medium output pipe (61) is connected to the input end of the heat dissipation device; The circulation pump (71) is arranged on any one of the heat exchange medium input pipe (62) and the heat exchange medium output pipe (61).

7. The battery condensation system according to claim 6, characterized in that: The heat exchange medium input pipe (62) is provided with a second control valve, and the second control valve is connected to the controller signal; The controller is used to control the second control valve to connect the output end of the heat dissipation device with the heat exchange input port of the battery stack (4), so as to control the connection of the main cooling circuit and cool the battery stack (4).

8. The battery condensation system according to claim 7, characterized in that: The heat dissipation device comprises a radiator (72) and a heat dissipation fan (73); The input end of the radiator (72) is connected to the second end of the heat exchange medium output pipe (61), and the output end of the radiator (72) is connected to the second end of the heat exchange medium input pipe (62); There are at least two cooling fans (73) disposed on the side of the radiator (72); The controller is signal-connected to the cooling fan (73) and is used to control the cooling fan (73) to operate when the output end of the cooling device and the heat exchange input port of the battery stack (4) are connected.

9. The battery condensation system according to claim 1, characterized in that: The battery condensation system also includes a condenser (8); The input end of the condenser (8) is used to be connected to the output end of the air compressor (9), and the output end of the condenser (8) is used to be connected to the battery stack (4). The condenser (8) is used to cool the input compressed air before inputting it into the battery stack (4).

10. A vehicle, characterized in that: It comprises an air compressor (9), a battery stack (4), a tail exhaust pipe (10), a liquid hydrogen tank (3) and the battery condensation system according to claims 1 to 9, wherein the battery condensation system is respectively connected to the air compressor (9), the battery stack (4), the tail exhaust pipe (10) and the liquid hydrogen tank (3).

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