Automobile circulation system based on Kalina cycle and control method thereof

Abstract

The present invention discloses a Kalina cycle-based automotive circulation system and control method thereof. The circulation system includes a Kalina cycle unit, a battery waste heat utilization unit, a cabin cooling unit, a cabin heating unit, and a heat and cold supply unit for supplying cooling or heating to the vehicle's cooling or heating components. The battery waste heat utilization unit includes a heat exchanger and the vehicle's fuel cell. The heat exchanger is connected in series between the Kalina cycle unit's high-pressure pump and expander. The cabin cooling unit, cabin heating unit, and heat and cold supply unit are all connected in series to the Kalina cycle unit's circulation pipeline, and the three are connected in parallel. Application of this solution can fully utilize the heat of the fuel cell to generate electricity, cool or heat the vehicle cabin, and heat or cool the vehicle's heating or cooling components, thereby avoiding the environmental hazards of direct battery waste heat discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular to a circulation system based on a Kalina cycle of an automobile and a control method thereof. Background Art

[0002] The Kalina cycle is a power cycle that uses an ammonia-water mixture as the working fluid. It includes an expander, a generator, a regenerator, two mixers, a connecting valve, a high-pressure pump, a low-pressure pump, a separator, a distiller and other components. Based on the fact that the boiling point and condensation point of the ammonia-water mixture are not fixed, the kinetic energy generated by the gaseous working fluid at low temperature is used to drive the expander to generate electricity.

[0003] Fuel cells in automobiles generate a significant amount of heat during operation, particularly in larger vehicles. Traditionally, this heat has been dissipated to the atmosphere via fans and air-to-water radiators connected to the fuel cells, effectively failing to utilize the waste heat.

[0004] Therefore, how to effectively utilize the waste heat of fuel cells is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a circulation system for an automobile based on the Kalina cycle, wherein the circulation system includes a Kalina cycle unit and a battery waste heat utilization unit. The battery waste heat utilization unit includes a heat exchanger and a fuel cell of the automobile. The heat exchanger is connected in series between the high-pressure pump and the expander of the Kalina cycle unit, and can use the heat of the fuel cell to heat the ammonia-water mixture in the circulation system.

[0006] In one embodiment, the circulation system further includes a cabin cooling unit and / or a cabin heating unit, wherein the cabin cooling unit includes an in-vehicle evaporator, an out-vehicle condenser, and a cooling valve group, and the cabin heating unit includes an in-vehicle condenser, an out-vehicle evaporator, and a heating valve group, and the cooling unit and the heating unit are both connected in series to the circulation pipeline of the Kalina circulation unit.

[0007] In one embodiment, the refrigeration valve group includes a first refrigeration valve and a second refrigeration valve, the in-vehicle evaporator and the first refrigeration valve are connected in series between the first mixer and the low-pressure pump of the Kalina cycle unit, and the out-vehicle condenser and the second refrigeration valve are connected in series between the second mixer and the high-pressure pump of the Kalina cycle unit;

[0008] The heating valve group includes a first heating valve and a second heating valve; the exterior evaporator and the first heating valve are connected in series between the first mixer and the low-pressure pump of the Kalina circulation unit, and the interior condenser and the second heating valve are connected in series between the second mixer and the high-pressure pump of the Kalina circulation unit;

[0009] The first mixer is connected to the rich aqueous solution outlet of the distiller of the Kalina circulation unit, and the second mixer is connected to the rich ammonia solution outlet of the distiller.

[0010] In one embodiment, the circulation system further includes a heat and cold supply unit for supplying heat or cold to the hot or cold components on the vehicle, the heat and cold supply unit including a chiller, a hot water unit, a cold water valve, and a hot water valve; the chiller and the cold water valve are connected in series between the first mixer and the low-pressure pump of the Kalina circulation unit, and the hot water unit and the hot water valve are connected in series between the second mixer and the high-pressure pump of the Kalina circulation unit;

[0011] The first mixer is connected to the rich aqueous solution outlet of the distiller of the Kalina circulation unit, and the second mixer is connected to the rich ammonia solution outlet of the distiller.

[0012] In one embodiment, the circulation system further includes a water-heating PTC connected in series between the high-pressure pump and the expander of the Kalina circulation unit for heating the ammonia-water mixture in the circulation system.

[0013] In one embodiment, the battery waste heat utilization unit further includes a radiator and a fan for dissipating heat from the fuel cell. The radiator is connected in series with the fuel cell, and the fan blows air toward the radiator and the surface of the fuel cell.

[0014] In addition, the present invention also provides a control method for the above-mentioned circulation system, including a power generation strategy, wherein the power generation strategy includes the following steps:

[0015] The circulation valve of the Kalina circulation unit is opened, the high-pressure pump and the low-pressure pump of the Kalina circulation unit are started, so that the ammonia-water mixture in the Kalina circulation unit is in a circulating flow state, and the fuel cell is started to put the fuel cell into an operating state.

[0016] In one embodiment, the control method further includes a cabin cooling strategy and / or a cabin heating strategy;

[0017] The cabin cooling strategy includes the following steps:

[0018] Get cabin cooling instructions;

[0019] opening the refrigeration valve group of the circulation system in response to the cabin cooling instruction;

[0020] Determine whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current cooling condition requirements, and if not, activate the water heating PTC of the circulation system;

[0021] The cabin heating strategy includes the following steps:

[0022] Get cabin heating instructions;

[0023] opening the heating valve group of the circulation system in response to the cabin heating instruction;

[0024] It is determined whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current heating working condition requirement. If not, the water heating PTC of the circulation system is started.

[0025] In one embodiment, the control method further includes a cold and hot supply strategy, which includes the following steps:

[0026] Get hot and cold supply instructions;

[0027] opening the cold water valve and the hot water valve of the circulation system in response to the cold and hot supply instruction;

[0028] It is determined whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current cooling condition demand or the current heating condition demand. If not, the water heating PTC of the circulation system is started.

[0029] In one embodiment, the control method further includes a battery heat dissipation strategy, and the battery heat dissipation strategy includes the following steps:

[0030] Determine whether the temperature of the vehicle's fuel cell is greater than a preset battery temperature upper limit;

[0031] If it is greater, the fan for cooling the fuel cell is started.

[0032] The circulation system and control method provided in this solution can fully utilize the heat of the fuel cell to generate electricity, cool or heat the vehicle cabin, and heat or cool the hot or cold components on the vehicle, avoiding the problem of direct discharge of battery waste heat to harm the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a specific embodiment of the circulation system provided by the present invention.

[0034] The following are the descriptions of the reference numerals:

[0035] 1 Fuel cell, 2 Heat exchanger, 3 Water heating PTC, 4 Expander, 5 Generator, 6 Regenerator, 7 First mixer, 8 First four-way valve, 9 First refrigeration valve, 10 In-vehicle evaporator, 11 Second four-way valve, 12 Low-pressure pump, 13 Separator, 14 Second mixer, 15 Third four-way valve, 16 Second refrigeration valve, 17 Out-vehicle condenser, 18 Fan, 19 Radiator, 20 High-pressure pump, 21 Fourth four-way valve, 22 In-vehicle condenser, 23 Second heating valve, 24 Hot water valve, 25 Hot water unit, 26 Chiller, 27 Out-vehicle evaporator, 28 First heating valve, 29 Cold water valve, 30 Connecting valve, 31 Distiller. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0037] like Figure 1 The circulation system based on the Kalina cycle (hereinafter referred to as the circulation system) includes: a Kalina circulation unit, a battery waste heat utilization unit, a cabin cooling unit, a cabin heating unit, and a cold and hot supply unit for supplying cooling to cold parts on the vehicle and heating to hot parts on the vehicle.

[0038] It should be noted that in actual implementation, the cabin cooling unit, cabin heating unit, and cold and hot supply unit are optional components of the circulation system. All three can be set at the same time, or none of the three can be set, or only one or two of them can be set.

[0039] The Kalina cycle unit utilizes the kinetic energy generated by the low-temperature gaseous working fluid to drive the generator 5 to generate electricity based on the fact that the boiling point and condensation point of the ammonia-water mixture are not fixed.

[0040] The Kalina cycle unit includes an expander 4, a regenerator 6, a first mixer 7, a low-pressure pump 12, a separator 13, a second mixer 14, a high-pressure pump 20, a connecting valve 30, a distiller 31, and a circulation pipeline. The circulation pipeline includes a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, and a fifth pipeline. A generator 5 is connected to the expander 4.

[0041] One end of the first pipeline is connected to the cold end inlet of the regenerator 6, and the other end is connected to the cold end outlet of the regenerator 6. The first mixer 7, the low-pressure pump 12, the separator 13, the second mixer 14, the high-pressure pump 20, and the expander 4 are connected in series on the first pipeline from the cold end outlet to the cold end inlet.

[0042] One end of the second pipeline is connected to the hot end inlet of the regenerator 6, and the other end is connected to the separator 13. One end of the third pipeline is connected to the hot end outlet of the regenerator, and the other end is connected to the inlet of the distiller 31. One end of the fourth pipeline is connected to the second mixer 14, and the other end is connected to the ammonia-rich solution outlet of the distiller 31. One end of the fifth pipeline is connected to the first mixer 7, and the other end is connected to the rich water outlet of the distiller 31. A connecting valve 30 is connected in series to the fifth pipeline.

[0043] It should be noted that in actual implementation, the structure of the Kalina cycle unit may be slightly adjusted, but as long as the basic structure is based on the Kalina cycle well known to those skilled in the art, it also belongs to the Kalina cycle unit described in this solution.

[0044] The battery waste heat utilization unit includes the vehicle's fuel cell 1, a radiator 19, a fan 18, and a heat exchanger 2. The radiator 19 is connected to the fuel cell 1's cooling channel, and the fan 18 blows air toward the radiator 19 and the surface of the fuel cell 1. Both the fan 18 and the radiator 19 are used to dissipate heat from the fuel cell 1. It should be noted that in actual implementation, the radiator 19 can be omitted, and the fan 18 alone can dissipate heat from the fuel cell 1.

[0045] Heat exchanger 2 is connected in series to the pipe section between the high-pressure pump 20 and the expander 4 of the Kalina cycle unit and is located close to the fuel cell 1. Heat exchanger 2 utilizes the heat from the fuel cell 1 to heat the ammonia-water mixture within the Kalina cycle unit, vaporizing the ammonia-water mixture into a gaseous state to drive the expander 4, which in turn drives the generator 5 to generate electricity. This utilizes the waste heat from the fuel cell 1, reducing vehicle operating costs and the environmental impact of vehicle operation.

[0046] Specifically, the fan 18 and the heat exchanger 2 can be arranged on opposite sides of the radiator 19 and the fuel cell 1, so that the hot air flowing through the radiator 19 and the fuel cell 1 can more fully contact the heat exchanger 2, so that the heat exchanger 2 can absorb the waste heat of the fuel cell 1 more efficiently.

[0047] In the illustrated embodiment, the first pipeline of the Kalina circulation unit includes three first branches connected in parallel between the first mixer 7 and the low-pressure pump 12, and three second branches connected in parallel between the second mixer 14 and the high-pressure pump 20. It should be noted that if the cabin cooling unit, cabin heating unit, and cold / hot supply unit are omitted, or if only one or two of the three are provided, the number of first and second branches can be reduced.

[0048] In the figure, the three first branches are connected to the first mixer 7 through the first four-way valve 8, the three first branches are connected to the low-pressure pump 12 through the second four-way valve 11, the three second branches are connected to the second mixer 14 through the third four-way valve 15, and the three second branches are connected to the high-pressure pump 20 through the fourth four-way valve 21.

[0049] The cabin cooling unit includes an in-vehicle evaporator 10, an out-vehicle condenser 17, and a refrigeration valve assembly, which includes a first refrigeration valve 9 and a second refrigeration valve 16. The in-vehicle evaporator 10 and the first refrigeration valve 9 are connected in series on a first branch line, while the out-vehicle condenser 17 and the second refrigeration valve 16 are connected in series on a second branch line.

[0050] The cabin heating unit includes an interior condenser 22, an exterior evaporator 27, and a heating valve assembly, which includes a first heating valve 28 and a second heating valve 23. The interior condenser 22 and the second heating valve 23 are connected in series to a second branch line, while the exterior evaporator 27 and the first heating valve 28 are connected in series to a first branch line.

[0051] The cold and hot supply unit includes a chiller 26, a cold water valve 29, a hot water unit 25 and a hot water valve 24. The chiller 26 and the cold water valve 29 are connected in series to another first branch, and the hot water unit 25 and the hot water valve 24 are connected in series to another second branch.

[0052] The circulation system also features a water-heating PTC 3, connected in series between the Kalina circulation unit's high-pressure pump 20 and expander 4, to heat the ammonia-water mixture within the circulation system. This PTC 3 can be powered directly by the generator 5 or by a power battery. It should be noted that this is an optional component.

[0053] By adopting the above-mentioned design, the circulation system can utilize the waste heat of the fuel cell 1 to cool or heat the vehicle cabin, and can utilize the waste heat of the fuel cell 1 to heat or cool the heat-consuming or cold-consuming components on the vehicle. Moreover, when the waste heat of the fuel cell 1 cannot meet the current cooling condition demand, heating condition demand, or cooling and heating condition demand, the water heating PTC3 can be started to provide the additional required heat.

[0054] The present invention also provides a control method for the aforementioned circulation system, including a power generation strategy, a cabin cooling strategy, a cabin heating strategy, a heat and cold supply strategy, and a battery heat dissipation strategy. It will be understood that the control method only utilizes the cabin cooling strategy if the circulation system is equipped with a cabin cooling unit. Similarly, the control method only utilizes the cabin heating strategy if the circulation system is equipped with a cabin heating unit. Similarly, the control method only utilizes the heat and cold supply strategy if the circulation system is equipped with a heat and cold supply unit.

[0055] Specifically, the power generation strategy includes the following steps:

[0056] The connecting valve 30 of the Kalina circulation unit is opened, and the high-pressure pump 20 and the low-pressure pump 12 of the Kalina circulation unit are started to put the ammonia-water mixture in the circulation system into a circulating flow state, and the power battery is started to put the power battery into an operating state.

[0057] Under the control of the power generation strategy, the circulation system can use the heat of the power battery to heat the ammonia-water mixture in the circulation system, so that the ammonia-water mixture is vaporized into a gaseous state to drive the expander 4 to do work, thereby driving the generator 5 to generate electricity.

[0058] Specifically, the battery heat dissipation strategy includes the following steps:

[0059] Determining whether the temperature of the fuel cell 1 of the vehicle is greater than a preset battery temperature upper limit;

[0060] If it is greater than, the fan 18 for dissipating heat from the fuel cell 1 is started.

[0061] Under the control of the battery heat dissipation strategy, the circulation system can ensure that the battery operates within a reasonable temperature range and can make more effective use of the battery's waste heat.

[0062] Specifically, the cabin cooling strategy includes the following steps:

[0063] Get cabin cooling instructions;

[0064] In response to the cabin cooling command, the refrigeration valve group of the circulation system is opened—the first refrigeration valve 9 and the second refrigeration valve 16 in the figure;

[0065] Determine whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current cooling working condition requirements. If not, start the water heating PTC3 of the circulation system.

[0066] Under the control of the cabin cooling strategy, the circulation system can use the heat of the power battery to cool the cabin, and can use the water heating PTC3 to provide additional heat when the heat of the power battery cannot meet the current cooling working conditions.

[0067] It should be noted that when the cabin is cooled, the cooling valve group and the connecting valve 30 are in the open state, the heating valve group is in the closed state, and the cold water valve 29 and the hot water valve 24 can be opened or closed.

[0068] Specifically, the cabin heating strategy includes the following steps:

[0069] Get cabin heating instructions;

[0070] In response to the cabin heating command, the heating valve group of the circulation system is opened—the first heating valve 28 and the second heating valve 23 in the figure;

[0071] Determine whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current heating working condition requirements. If not, start the water heating PTC3 of the circulation system.

[0072] Under the control of the cabin heating strategy, the circulation system can use the heat of the power battery to heat the cabin, and can use the water heating PTC3 to provide additional heat when the heat of the power battery cannot meet the current heating working conditions.

[0073] It should be noted that when the cabin is heated, the heating valve group and the connecting valve 30 are in the open state, the cooling valve group is in the closed state, and the cold water valve 29 and the hot water valve 24 can be opened or closed.

[0074] Specifically, the hot and cold supply strategy includes the following steps:

[0075] Get hot and cold supply instructions;

[0076] In response to the hot and cold supply instructions, the cold water valve 29 and the hot water valve 24 are opened;

[0077] Determine whether the heat of the ammonia-water mixture flowing in the system can meet the current cooling or heating requirements. If not, start the water heating PTC3 of the circulation system.

[0078] Under the control of the hot and cold supply strategy, the circulation system can use the heat of the power battery to heat or cool the hot or cold components on the vehicle, and can use the water heating PTC3 to provide additional heat when the heat of the power battery cannot meet the current heating or cooling requirements.

[0079] It should be noted that when heating or cooling the hot or cold components on the vehicle, the cold water valve 29, the hot water valve 24 and the connecting valve 30 are in the open state, and the cooling valve group and the heating valve group can both be in the closed state or one can be open and the other closed.

[0080] More specifically, the cabin cooling instructions, cabin heating instructions, and cold and hot supply instructions can be issued manually, such as by manually pressing the corresponding buttons on the car, or they can be automatically issued by the controller according to the temperature conditions of the corresponding area.

[0081] Preferably, the cold water valve 29 and the hot water valve 24 are closed when the circulation system is cooling or heating the cabin, and the cold water valve 29 and the hot water valve 24 are opened when the circulation system is not cooling or heating the cabin. This can be achieved by the following means:

[0082] A temperature sensor is provided to communicate with the controller for detecting the cabin temperature, and a minimum temperature value and a maximum temperature value are preset in the controller. When the cabin temperature is lower than or equal to the preset minimum temperature value, the controller issues a cabin heating command; when the cabin temperature is higher than or equal to the preset maximum temperature value, the controller issues a cabin cooling command; when the cabin temperature is between the preset minimum temperature value and the preset maximum temperature value, the controller issues a cooling and heating supply command.

[0083] The above describes in detail the automotive Kalina cycle-based circulation system and control method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. The automobile's circulation system is based on the Kalina cycle, characterized by: The circulation system includes a Kalina circulation unit and a battery waste heat utilization unit; The Kalina circulation unit comprises an expander (4), a regenerator (6), a first mixer (7), a low-pressure pump (12), a separator (13), a second mixer (14), a high-pressure pump (20), a connecting valve (30), a distiller (31) and a circulation pipeline, wherein the circulation pipeline comprises a first pipeline, one end of the first pipeline is connected to the cold end inlet of the regenerator (6), and the other end is connected to the cold end outlet of the regenerator (6), the first mixer (7), the low-pressure pump (12), the separator (13), the second mixer (14), the high-pressure pump (20), and the expander (4) are sequentially connected in series on the first pipeline from the cold end outlet to the cold end inlet, and the connecting valve (30) is connected between the distiller (31) and the first mixer (7); The battery waste heat utilization unit includes a heat exchanger (2) and a fuel cell (1) of a vehicle, wherein the heat exchanger (2) is connected in series between a high-pressure pump (20) and an expander (4) of the Kalina circulation unit and can utilize the heat of the fuel cell (1) to heat the ammonia-water mixture in the circulation system; The circulation system further includes a cabin cooling unit and a cabin heating unit, wherein the cabin cooling unit includes an in-vehicle evaporator (10), an out-vehicle condenser (17) and a cooling valve group, and the cabin heating unit includes an in-vehicle condenser (22), an out-vehicle evaporator (27) and a heating valve group, and the cooling unit and the heating unit are both connected in series to the circulation pipeline of the Kalina circulation unit; The refrigeration valve group includes a first refrigeration valve (9) and a second refrigeration valve (16), the in-vehicle evaporator (10) and the first refrigeration valve (9) are connected in series between the first mixer (7) and the low-pressure pump (12) of the Kalina cycle unit, and the out-vehicle condenser (17) and the second refrigeration valve (16) are connected in series between the second mixer (14) and the high-pressure pump (20) of the Kalina cycle unit; The heating valve group includes a first heating valve (28) and a second heating valve (23); the vehicle exterior evaporator (27) and the first heating valve (28) are connected in series between the first mixer (7) and the low-pressure pump (12) of the Kalina circulation unit, and the vehicle interior condenser (22) and the second heating valve (23) are connected in series between the second mixer (14) and the high-pressure pump (20) of the Kalina circulation unit; The first mixer (7) is a mixer connected to the rich aqueous solution outlet of the distiller (31) of the Kalina circulation unit, and the second mixer (14) is a mixer connected to the rich ammonia solution outlet of the distiller (31).

2. The automobile circulation system based on the Kalina cycle according to claim 1, characterized in that: The circulation system further includes a heat supply unit for supplying heat or cold to the hot or cold components on the vehicle, the heat supply unit including a water chiller (26), a water hot water unit (25), a cold water valve (29) and a hot water valve (24); the water chiller (26) and the cold water valve (29) are connected in series between the first mixer (7) and the low-pressure pump (12) of the Kalina circulation unit, and the water hot water unit (25) and the hot water valve (24) are connected in series between the second mixer (14) and the high-pressure pump (20) of the Kalina circulation unit; The first mixer (7) is a mixer connected to the rich aqueous solution outlet of the distiller (31) of the Kalina circulation unit, and the second mixer (14) is a mixer connected to the rich ammonia solution outlet of the distiller (31).

3. The automobile circulation system based on the Kalina cycle according to claim 2, characterized in that: The circulation system further comprises a water heating PTC (3), which is connected in series between the high-pressure pump (20) and the expander (4) of the Kalina circulation unit and is used to heat the ammonia-water mixture in the circulation system.

4. The automobile circulation system based on the Kalina cycle according to claim 3, characterized in that: The battery waste heat utilization unit further comprises a radiator (19) and a fan (18) for dissipating heat from the fuel cell (1); the radiator (19) is connected in series with the fuel cell (1); and the fan (18) blows air toward the radiator (19) and the surface of the fuel cell (1).

5. A method for controlling a circulation system of an automobile based on a Kalina cycle, wherein the circulation system is the circulation system according to claim 4, characterized in that: The control method includes a power generation strategy, which includes the following steps: Opening the circulation valve of the Kalina circulation unit, starting the high-pressure pump (20) and the low-pressure pump (12) of the Kalina circulation unit, so that the ammonia-water mixture in the Kalina circulation unit is in a circulating flow state, starting the fuel cell (1), and putting the fuel cell (1) into an operating state; The control method further includes a cabin cooling strategy and / or a cabin heating strategy; The cabin cooling strategy includes the following steps: Get cabin cooling instructions; opening the refrigeration valve group of the circulation system in response to the cabin cooling instruction; Determine whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current cooling condition requirement, and if not, start the water heating PTC (3) of the circulation system; The cabin heating strategy includes the following steps: Get cabin heating instructions; opening the heating valve group of the circulation system in response to the cabin heating instruction; It is determined whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current heating working condition demand. If not, the water heating PTC (3) of the circulation system is started.

6. The control method of the automobile circulation system based on the Kalina cycle according to claim 5, characterized in that: The control method further includes a cold and hot supply strategy, which includes the following steps: Get hot and cold supply instructions; opening the cold water valve (29) and the hot water valve (24) of the circulation system in response to the cold and hot supply instructions; It is determined whether the heat of the ammonia-water mixture flowing in the circulation system can meet the current cooling condition demand or the current heating condition demand. If not, the water heating PTC (3) of the circulation system is started.

7. The method for controlling a Kalina cycle-based circulation system of an automobile according to any one of claims 5 to 6, characterized in that: The control method further includes a battery heat dissipation strategy, which includes the following steps: Determining whether the temperature of a fuel cell (1) of a vehicle is greater than a preset upper limit of the battery temperature; If it is greater than, the fan (18) for dissipating heat from the fuel cell (1) is started.

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