CN218996774U - Fuel cell system heat management device and fuel cell system - Google Patents
Fuel cell system heat management device and fuel cell system Download PDFInfo
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- CN218996774U CN218996774U CN202223356102.6U CN202223356102U CN218996774U CN 218996774 U CN218996774 U CN 218996774U CN 202223356102 U CN202223356102 U CN 202223356102U CN 218996774 U CN218996774 U CN 218996774U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/30—Hydrogen technology
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Abstract
The utility model discloses a fuel cell system heat management device and a fuel cell system, comprising a heater, a three-way valve and a water pump assembly, wherein: the heater comprises a first interface, a second interface, a third interface and a fourth interface, wherein the first interface is communicated with the third interface and forms a first liquid inlet channel, and the second interface is communicated with the fourth interface and forms a second liquid outlet channel; the three-way valve comprises a first valve interface, a second valve interface and a third valve interface, the water pump assembly comprises a pump head, a motor and an integrated controller, the integrated controller controls the heater, the three-way valve and the motor to work, the water pump outlet is connected with the second interface of the heater, the water pump inlet is connected with the first valve interface of the three-way valve, the heater, the water pump assembly and the three-way valve are integrated into a whole, the installation of parts is reduced, the volume of the fuel cell system is reduced, the cost is reduced, the heater adopts double-channel heating, the heating efficiency is high, and the overall efficiency and the reliability of the fuel cell system are improved.
Description
Technical field:
the present utility model relates to a fuel cell system heat management device and a fuel cell system.
The background technology is as follows:
the fuel cell system converts chemical energy into electric energy through catalytic oxidation reaction of hydrogen and oxygen, and generates water without any pollution. The heat loss is small in the fuel cell operation, which makes the fuel cell twice as efficient as the internal combustion engine. The fuel cell has the advantages of cleanness, high efficiency, environmental friendliness, high energy efficiency, high reliability and the like, and is one of ideal power sources for the development of the existing new energy automobile, so that the fuel cell automobile has a wide prospect in the application field of the new energy automobile, and a great deal of funds and manpower are invested in all countries worldwide for research and development.
The optimum operating temperature inside the fuel cell is about 70-80 deg.c, and the operating efficiency is low
Is quite low. However, the operating conditions of the vehicle are required to be complex and variable, and the vehicle must be normally started to operate in a low-temperature environment of-40 ℃. The fuel cell system also has to meet the requirements of the vehicle operation condition as a vehicle power system, and has to realize normal start and operation in a low temperature environment. Low temperature start-up is currently one of the main reasons that affects commercialization of fuel cell automobiles.
How to solve the problem of rapidly increasing the internal temperature of the fuel cell under the low-temperature environment to reach the temperature required by the starting of the fuel cell system is one of the key problems of low-temperature starting and running of the fuel cell at present. The three pipeline systems in the fuel cell are an air inlet system, a cooling system and a hydrogen supply system respectively. The air inlet system is used for feeding air into the electric pile of the fuel cell, and oxygen in the air reacts with hydrogen. The cooling system takes heat generated in the internal electric pile of the fuel cell which normally operates out through cooling liquid circulated in the system and the radiator radiates the heat. Therefore, under the low-temperature environment, the cooling liquid fed into the fuel cell system must be heated rapidly at the same time, so that the temperature inside the fuel cell can be increased rapidly, the normal starting and running of the fuel cell are ensured, the existing cooling system comprises a water pump, a temperature-saving valve and a heater, the water pump, the temperature-saving valve and the heater are arranged at different positions of the cooling system, and are connected through more connecting pipes and fasteners, so that the cooling system has a scattered structure, more parts and components, the utilization and electrical control of the space of the fuel cell system are not facilitated, and the unnecessary cost and reliability risks are increased.
The utility model comprises the following steps:
the utility model aims to provide a heat management device of a fuel cell system, which integrates a heater, a water pump and a three-way valve, reduces the installation of parts, reduces the volume of the fuel cell system, reduces the cost, adopts double-channel heating for the heater, has high heating efficiency and improves the overall efficiency and reliability of the fuel cell system.
Another object of the present utility model is to provide a fuel cell system, which solves the technical problems that when the current fuel cell system is in a low temperature environment, the fuel cell needs to be heated for a long time to realize the starting and normal operation of the vehicle, the rapid heating and rapid starting are difficult to achieve, and the types of parts in the cooling system of the current fuel cell system are various and scattered, the modularization integration level of the structure is low, so that the whole fuel cell system is large in size and occupies space.
The aim of the utility model is achieved by the following technical scheme.
The utility model aims to provide a thermal management device of a fuel cell system, which is characterized in that: it includes heater, three-way valve and water pump assembly, wherein: the water pump assembly comprises a pump head, a motor and an integrated controller, and the heater, the three-way valve and the water pump assembly are connected and fastened together to form a whole.
The heater comprises a first interface, a second interface, a third interface and a fourth interface, wherein the first interface is communicated with the third interface to form a first liquid inlet channel, and the second interface is communicated with the fourth interface to form a second liquid outlet channel;
the three-way valve comprises a first valve interface, a second valve interface and a third valve interface, and the second valve interface is connected with the first interface of the heater;
the pump head is arranged at one end of the motor, the integrated controller is positioned outside the motor, the integrated controller controls the heater, the three-way valve and the motor to work, the pump head is provided with a water pump outlet and a water pump inlet, the water pump outlet is connected with a second interface of the heater, and the water pump inlet is connected with a first valve interface of the three-way valve;
one path of cooling liquid flows into the first path of liquid inlet channel from the third interface of the heater, the cooling liquid flows through the first interface of the heater and the third valve interface of the three-way valve after being heated in the first path of liquid inlet channel, the other path of cooling liquid flows into the three-way valve from the second valve interface of the three-way valve to be converged with the heated cooling liquid, the converged cooling liquid flows through the first valve interface of the three-way valve and the water pump inlet of the pump head to enter the pump head for pressurization, the pressurized cooling liquid flows through the water pump outlet of the pump head and the second interface of the heater to enter the second path of liquid discharge channel, and the cooling liquid is discharged from the fourth interface of the heater after being heated in the second path of liquid discharge channel.
The first interface and the second interface are flange connection surfaces, and the third interface and the fourth interface are connection water nozzles; the first valve interface and the second valve interface are flange connection surfaces, and the third valve interface is a connection water nozzle; the water pump outlet and the water pump inlet are flange connection surfaces.
The integrated controller comprises a controller body, a high-voltage connector and a plurality of low-voltage connectors, wherein the high-voltage connector and the low-voltage connectors are arranged on the controller body, and the controller body is arranged at the other end of the motor.
The heater is provided with a heater low-voltage interface and a heater high-voltage interface, and the heater low-voltage interface and the heater high-voltage interface are respectively electrically connected with the low-voltage connector and the high-voltage connector of the controller body through wire harnesses.
The three-way valve is provided with a three-way valve low-pressure interface, and the three-way valve low-pressure interface is electrically connected with the low-pressure interface on the controller body through a wire harness.
The end face of the water pump outlet of the pump head is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the sealing ring is tightly pressed in the sealing groove when the water pump outlet is connected with the second interface of the heater.
The first interface and the second interface are arranged on the same side face of the heater, and the third interface and the fourth interface are arranged on the same side face of the heater.
The utility model provides a fuel cell system, includes fuel cell stack module, fuel cell system controller, cooling system, air inlet system and hydrogen supply system, and this cooling system includes thermal management device, auxiliary cooling liquid device and outer circulation cooling liquid device, its characterized in that: the thermal management device is the fuel cell system thermal management device;
the fourth interface of the heater is respectively connected with the cooling liquid inlet of the fuel cell stack module, the auxiliary inlet of the auxiliary cooling liquid device and the external circulation inlet of the external circulation cooling liquid device; the third interface of the heater is respectively connected with the cooling liquid outlet of the fuel cell stack module and the auxiliary cooling outlet of the auxiliary cooling liquid device; the third valve interface of the three-way valve is connected with an external circulation outlet of the external circulation cooling liquid device;
a first temperature sensor and a pressure sensor are arranged at the cooling liquid inlet of the fuel cell stack module;
the cooling liquid flowing out of the cooling liquid outlet of the fuel cell stack module and the cooling liquid flowing out of the auxiliary cooling outlet of the auxiliary cooling liquid device are converged and then enter the third interface of the heater together to flow into the first path of liquid inlet channel, and the cooling liquid flows through the first interface of the heater and the third valve interface of the three-way valve to enter the three-way valve after being heated in the first path of liquid inlet channel; the cooling liquid flowing out from an external circulation outlet of the external circulation cooling liquid device enters into the three-way valve to be converged with the heated cooling liquid, the converged cooling liquid flows through a first valve interface of the three-way valve and a water pump inlet of a pump head to enter into the pump head for pressurization, the pressurized cooling liquid flows through a water pump outlet of the pump head and a second interface of a heater to enter into a second liquid discharge channel, the cooling liquid is heated in the second liquid discharge channel and then is discharged from a fourth interface of the heater to flow into a cooling liquid inlet of the fuel cell stack module, an auxiliary inlet of the auxiliary cooling liquid device and an external circulation inlet of the external circulation cooling liquid device, and a first temperature sensor and a pressure sensor feed back temperature and pressure signals of the cooling liquid inlet of the fuel cell stack module to an integrated controller, and the integrated controller controls the heater, the three-way valve and a motor to work.
The second temperature sensor is arranged at the cooling liquid outlet of the fuel cell stack module, monitors the temperature of the cooling liquid at the cooling liquid outlet of the fuel cell stack module, transmits the cooling liquid temperature data entering the cooling liquid outlet of the fuel cell stack module to the fuel cell system controller, and transmits control signals to the integrated controller, and the integrated controller controls the heater, the three-way valve and the motor to work.
Compared with the prior art, the utility model has the following effects:
1) The heat management device receives the temperature and the pressure of the cooling liquid at the inlet of the electric pile, automatically adjusts the opening and closing of the heater, the opening of the three-way valve and the rotating speed of the water pump assembly, has the advantages of simplifying the control strategy of the fuel cell system, having short response time, self-fault feedback and the like, and is greatly helpful for the stable and reliable operation of the system.
2) The heat management device integrates the heater, the water pump assembly and the three-way valve, reduces the installation of parts, reduces the volume of the fuel cell system, reduces the cost, adopts double-channel heating for the heater, has high heating efficiency, and improves the overall efficiency and reliability of the fuel cell system. The water pump assembly, the three-way valve and the heater are highly integrated and share one controller, so that a plurality of connecting pipelines and fasteners are omitted, the water resistance of the system is reduced, the cost of parts is greatly saved, meanwhile, the connection reliability is improved, and the small volume is beneficial to the integrated arrangement of the fuel cell system.
3) According to the fuel cell system, the first temperature sensor and the pressure sensor feed back the temperature and pressure signals of the cooling liquid inlet entering the fuel cell stack module to the integrated controller, the integrated controller controls the heater, the three-way valve and the motor to work, the temperature of cooling liquid of the cooling system can be quickly increased in a low-temperature state, the inside of the fuel cell system is heated to an ideal temperature, the fuel cell system is quickly started, the normal operation requirement of the fuel cell system is met, the efficiency of the whole system is improved, energy sources are saved, and a thermal management device is adopted, so that parts are reduced, the volume of the fuel cell system is reduced, and the cost is reduced.
4) Other advantages of the present utility model are described in detail in the examples section.
Description of the drawings:
FIG. 1 is a perspective view of a first embodiment of the present utility model;
FIG. 2 is another perspective view of an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a pump head according to a first embodiment of the present utility model;
FIG. 4 is a perspective view of a heater according to a first embodiment of the present utility model;
FIG. 5 is another perspective view of a heater according to one embodiment of the present utility model;
FIG. 6 is a perspective view of a three-way valve according to a first embodiment of the present utility model;
FIG. 7 is a front view of a first embodiment of the present utility model;
FIG. 8 is a cross-sectional view of A-A of FIG. 7;
FIG. 9 is a block diagram of a circuit provided in accordance with a first embodiment of the present utility model;
FIG. 10 is a schematic block diagram of a second embodiment of the present utility model;
FIG. 11 is a circuit block diagram of a second embodiment of the present utility model;
fig. 12 is a circuit block diagram of an integrated controller according to a second embodiment of the present utility model.
The specific embodiment is as follows:
the utility model is described in further detail below by means of specific embodiments in connection with the accompanying drawings.
Embodiment one:
as shown in fig. 1 to 9, a thermal management device for a fuel cell system is characterized in that: it includes heater 1, three-way valve 2 and water pump assembly 3, wherein: the water pump assembly 3 comprises a pump head 31, a motor 32 and an integrated controller 33, the heater 1, the three-way valve 2 and the water pump assembly 3 are connected and fastened together to be installed as a whole, the heat management device receives the temperature and the pressure of the cooling liquid at the inlet of the electric pile, the opening and the closing of the heater are regulated by itself, the opening of the three-way valve and the rotating speed of the water pump assembly are regulated by itself, and the control strategy of the fuel cell system is simplified, the response time is short, and the self-failure feedback and other advantages are realized, so that the system is greatly helped to operate stably and reliably.
The heater 1 includes a first port 11, a second port 12, a third port 13, and a fourth port 14, where the first port 11 is communicated with the third port 13 to form a first liquid inlet channel 101, and the second port 12 is communicated with the fourth port 14 to form a second liquid outlet channel 102; the three-way valve 2 comprises a first valve port 21, a second valve port 22 and a third valve port 23, and the second valve port 22 is connected with the first port 11 of the heater 1; the pump head 31 is arranged at one end of the motor 32, the integrated controller 33 is positioned outside the motor 32, the integrated controller 33 controls the heater 1, the three-way valve 2 and the motor 32 to work, the pump head 31 is provided with a water pump outlet 311 and a water pump inlet 312, the water pump outlet 311 is connected with the second interface 12 of the heater 1, and the water pump inlet 312 is connected with the first valve interface 21 of the three-way valve 2; one path of cooling liquid flows into the first path of liquid inlet channel 101 from the third port 13 of the heater 1, the cooling liquid flows through the first port 11 of the heater 1 and the third valve port 23 of the three-way valve 2 after being heated in the first path of liquid inlet channel 101, the other path of cooling liquid flows into the three-way valve 2 from the second valve port 22 of the three-way valve 2 to be converged with the heated cooling liquid, the converged cooling liquid flows through the first valve port 21 of the three-way valve 2 and the water pump inlet 312 of the pump head 31 to enter the pump head 31 for pressurization, the pressurized cooling liquid flows through the water pump outlet 311 of the pump head 31 and the second port 12 of the heater 1 to enter the second path of liquid outlet channel 102, the cooling liquid is discharged from the fourth port 14 of the heater 1 after being heated in the second path of liquid outlet channel 102, and the heat management device integrates the heater, the water pump assembly and the three-way valve into a whole, thereby reducing the installation of parts, reducing the volume of the fuel cell system, reducing the cost, the heater adopts double-way heating, the heating efficiency is high, and the overall efficiency and the reliability of the fuel cell system is improved. The water pump assembly, the three-way valve and the heater are highly integrated and share one controller, so that a plurality of connecting pipelines and fasteners are omitted, the water resistance of the system is reduced, the cost of parts is greatly saved, meanwhile, the connection reliability is improved, and the small volume is beneficial to the integrated arrangement of the fuel cell system.
The structure uses the principle of operation in a fuel cell system:
in the fuel cell system, the fuel cell system heat management device is mainly responsible for the temperature of the coolant entering the coolant inlet of the fuel cell stack module. When the high-temperature cooling liquid after the reaction of the fuel cell pile module flows out from the cooling liquid outlet of the fuel cell pile module, the cooling liquid flows together with the cooling liquid of the auxiliary cooling liquid device after entering the main pipeline and enters the third interface 13 of the heater 1, and the second temperature sensor is arranged at the position of the cooling liquid outlet of the fuel cell pile module to detect the outlet temperature so as to ensure that the temperature difference between the cooling liquid inlet and the cooling liquid outlet of the fuel cell pile module is in a control range, and the heat dissipation capacity of the fuel cell system is enough. One path of cooling liquid enters the third valve interface 23 of the three-way valve 2 through the first path of liquid inlet channel 101 of the heater 1, the other path of cooling liquid flows out from the outer circulation outlet of the outer circulation cooling liquid device and enters the second valve interface 22 of the three-way valve 2 to be converged with the heated cooling liquid, the three-way valve 2 adjusts the opening degree to control the inflow proportion of the two paths of cooling liquid, then enters the water pump inlet 312 through the first valve interface 21 of the three-way valve 2, after being pressurized by the pump head 31, the cooling liquid flows out from the water pump outlet 311 and then enters the second interface 12 of the heater 1, after the cooling liquid is heated again by the heater 1, the cooling liquid is finally connected with the cooling liquid inlet of the fuel cell stack module through the fourth interface 14, and the other part of cooling liquid flows to the auxiliary inlet of the auxiliary cooling liquid device and the outer circulation inlet of the outer circulation cooling liquid device, and the first temperature sensor and the pressure sensor detect the temperature and the pressure of the cooling liquid inlet of the fuel cell stack module.
The heat management device mainly collects the temperature and pressure parameters of the cooling liquid at the cooling liquid inlet of the fuel cell stack module and feeds back the cooling liquid to the integrated controller through the first temperature sensor and the pressure sensor, and meanwhile, the fuel cell system provides high pressure for the integrated controller, and the fuel cell system controller communicates with the integrated controller and supplies low voltage. The integrated controller controls the start-up and shut-down of the heater 1, the opening degree of the three-way valve 2, and the rotation speed of the water pump assembly by comparing the system target value given by the fuel cell system controller with the temperature and pressure parameters of the coolant inlet of the fuel cell stack module. When the fuel cell system has a power-on start requirement, the integrated controller 33 judges whether the temperature of the cooling liquid at the cooling liquid inlet of the fuel cell stack module is lower than a first temperature threshold value T1, if so, the fuel cell system enters a cold start mode, the integrated controller 33 of the heat management device controls the heater 1 to be started, the water pump assembly maintains a certain rotating speed to ensure that the pressure at the cooling liquid inlet of the fuel cell stack module is not higher than a reference value, the three-way valve 2 is at a 0 position, and the cooling liquid of the external circulation cooling liquid device is prevented from entering. When the temperature of the cooling liquid at the cooling liquid inlet of the fuel cell stack module reaches the second temperature threshold T2, the fuel cell system is started, the heater 1 is turned off, the water pump assembly maintains a certain rotating speed to ensure that the temperature difference between the cooling liquid inlet and the cooling liquid outlet of the fuel cell stack module is within a control value, the pressure of the cooling liquid inlet of the fuel cell stack module is not higher than a reference value, and meanwhile, the three-way valve 2 continues to maintain 0 position. When the temperature of the cooling liquid inlet of the fuel cell stack module exceeds a third temperature threshold T3, the heater 1 is kept closed, the rotation speed of the water pump assembly is automatically adjusted according to working conditions, the pressure of the cooling liquid inlet of the fuel cell stack module is ensured not to exceed a reference value, and meanwhile, the temperature difference between the cooling liquid inlet and the cooling liquid outlet of the fuel cell stack module is maintained within a limit value. The three-way valve 2 automatically adjusts the opening degree to ensure that the temperature of the cooling liquid inlet of the fuel cell stack module does not exceed the temperature limit value T4. If the water pump assembly reaches the maximum rotation speed and the three-way valve 2 reaches the maximum opening, all the water passes through the external circulation cooling liquid device, and the cooling liquid inlet temperature of the fuel cell stack module is still controlled not to be below the temperature limit value T4, the heat management device reports a fault to stop the system.
The first interface 11 and the second interface 12 are flange connection surfaces, and the third interface 13 and the fourth interface 14 are connection water nozzles; the first valve interface 21 and the second valve interface 22 are flange connection surfaces, and the third valve interface 23 is a connection water nozzle; the water pump outlet 311 and the water pump inlet 312 are flange connection surfaces, and the structure is reasonable, so that the heater 1, the three-way valve 2 and the water pump assembly 3 are convenient to connect with each other.
The integrated controller 33 includes a controller body 331, a high-voltage connector 332 and a plurality of low-voltage connectors 333 disposed on the controller body 331, and the controller body 331 is mounted at the other end of the motor 32, and has reasonable structural arrangement.
The heater 1 is provided with the heater low-voltage interface 15 and the heater high-voltage interface 16, and the heater low-voltage interface 15 and the heater high-voltage interface 16 are respectively electrically connected with the low-voltage interface 333 and the high-voltage interface 332 of the controller body 331 through wire harnesses, so that the circuit arrangement is convenient, the connection is convenient, and the structural arrangement is reasonable.
The three-way valve 2 is provided with the three-way valve low-pressure port 24, the three-way valve low-pressure port 24 is electrically connected with the low-pressure port 333 on the controller body 331 through a wire harness, so that the circuit arrangement is convenient, the connection is convenient, and the structural arrangement is reasonable.
The end face of the water pump outlet 311 of the pump head 31 is provided with a sealing groove 3111, a sealing ring is installed in the sealing groove 3111, and the sealing ring is pressed in the sealing groove 3111 when the water pump outlet 311 is connected with the second interface 12 of the heater 1, so that the sealing effect is achieved.
The first interface 11 and the second interface 12 are arranged on the same side of the heater 1, the third interface 13 and the fourth interface 14 are arranged on the same side of the heater 1, and the structural arrangement is reasonable.
Embodiment two:
as shown in fig. 10 and 11, a fuel cell system comprising a fuel cell stack module, a fuel cell system controller, a cooling system including a heat management device, an auxiliary coolant device, and an external circulation coolant device, an air intake system, and a hydrogen supply system, is characterized in that: the thermal management device is the fuel cell system thermal management device;
the fourth interface of the heater is respectively connected with the cooling liquid inlet of the fuel cell stack module, the auxiliary inlet of the auxiliary cooling liquid device and the external circulation inlet of the external circulation cooling liquid device; the third interface of the heater is respectively connected with the cooling liquid outlet of the fuel cell stack module and the auxiliary cooling outlet of the auxiliary cooling liquid device; the third valve interface of the three-way valve is connected with an external circulation outlet of the external circulation cooling liquid device;
a first temperature sensor and a pressure sensor are arranged at the cooling liquid inlet of the fuel cell stack module;
the cooling liquid flowing out of the cooling liquid outlet of the fuel cell stack module and the cooling liquid flowing out of the auxiliary cooling outlet of the auxiliary cooling liquid device are converged and then enter the third interface of the heater together to flow into the first path of liquid inlet channel, and the cooling liquid flows through the first interface of the heater and the third valve interface of the three-way valve to enter the three-way valve after being heated in the first path of liquid inlet channel; the cooling liquid flowing out from the external circulation outlet of the external circulation cooling liquid device enters the three-way valve and is converged with the heated cooling liquid, the converged cooling liquid flows through the first valve interface of the three-way valve and the water pump inlet of the pump head to enter the pump head for pressurizing, the pressurized cooling liquid flows through the water pump outlet of the pump head and the second interface of the heater to enter the second liquid discharge channel, the cooling liquid is heated in the second liquid discharge channel and then is discharged from the fourth interface of the heater to flow into the cooling liquid inlet of the fuel cell stack module, the auxiliary inlet of the auxiliary cooling liquid device and the external circulation inlet of the external circulation cooling liquid device, the first temperature sensor and the pressure sensor feed back the temperature and pressure signals entering the cooling liquid inlet of the fuel cell stack module to the integrated controller, the integrated controller controls the heater, the three-way valve and the motor to work, the temperature of the cooling system can be rapidly increased in a low-temperature state, the inside of the fuel cell system is heated to an ideal temperature, the quick start-up of the fuel cell system is realized, the normal operation requirement of the fuel cell system is met, the efficiency of the whole system is improved, the energy saving and the energy saving device is reduced, the energy saving device is adopted, the energy saving cost is reduced, and the cost of the system is reduced, and the cost of components is reduced.
The second temperature sensor is arranged at the cooling liquid outlet of the fuel cell stack module, monitors the temperature of the cooling liquid at the cooling liquid outlet of the fuel cell stack module, transmits the cooling liquid temperature data entering the cooling liquid outlet of the fuel cell stack module to the fuel cell system controller, and transmits control signals to the integrated controller, and the integrated controller controls the heater, the three-way valve and the motor to work.
The three-way valve 2 comprises a valve body, a valve core, a three-way valve motor, a three-way valve low-pressure interface, a first valve interface 21, a second valve interface 22 and a third valve interface 23, wherein the three-way valve low-pressure interface is connected with the integrated controller through a wire harness; the three-way valve motor controls the opening of a valve core in the valve body; fig. 12 is a circuit block diagram of the integrated controller 33 of the present utility model, in which FCU is a fuel cell system controller, and the position acquisition module is configured to acquire the opening position of the valve element of the three-way valve 2; the driving module is used for driving a three-way valve motor of the three-way valve 2 to rotate, and the three-way valve motor rotates to drive a valve core to rotate, so that the opening of the valve core of the three-way valve 2 is regulated; the pump head control module is mainly used for controlling the motor 32 of the water pump assembly to work; the heater control module is mainly used for controlling the heater 1 to work, the integrated controller 33 is also provided with a high-voltage power supply module, and the high-voltage power supply provided by the outside is converted by the high-voltage power supply module to provide high-voltage power for the heater 1 and the water pump assembly; the integrated controller 33 is also provided with a communication power supply module, which is mainly used for communicating with the fuel cell system controller FCU and acquiring the low-voltage direct current power supply of the FCU; the integrated controller 33 is further provided with a temperature and pressure acquisition module for acquiring the temperature and pressure parameters of the cooling liquid at the cooling liquid inlet of the fuel cell stack module.
The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present utility model are included in the scope of the present utility model.
Claims (10)
1. A fuel cell system thermal management apparatus characterized by: it includes heater (1), three-way valve (2) and water pump assembly (3), wherein: the water pump assembly (3) comprises a pump head (31), a motor (32) and an integrated controller (33), and the heater (1), the three-way valve (2) and the water pump assembly (3) are connected and fastened together to be installed as a whole.
2. A fuel cell system thermal management apparatus according to claim 1, wherein:
the heater (1) comprises a first interface (11), a second interface (12), a third interface (13) and a fourth interface (14), wherein the first interface (11) is communicated with the third interface (13) and forms a first liquid inlet channel (101), and the second interface (12) is communicated with the fourth interface (14) and forms a second liquid outlet channel (102);
the three-way valve (2) comprises a first valve interface (21), a second valve interface (22) and a third valve interface (23), and the second valve interface (22) is connected with the first interface (11) of the heater (1);
the pump head (31) is arranged at one end of the motor (32), the integrated controller (33) is positioned outside the motor (32), the integrated controller (33) controls the heater (1), the three-way valve (2) and the motor (32) to work, the pump head (31) is provided with a water pump outlet (311) and a water pump inlet (312), the water pump outlet (311) is connected with the second interface (12) of the heater (1), and the water pump inlet (312) is connected with the first valve interface (21) of the three-way valve (2);
one path of cooling liquid flows into the first path of liquid inlet channel (101) from the third interface (13) of the heater (1), the cooling liquid flows through the first interface (11) of the heater (1) and the third valve interface (23) of the three-way valve (2) after being heated in the first path of liquid inlet channel (101), the other path of cooling liquid flows into the three-way valve (2) from the second valve interface (22) of the three-way valve (2) to be converged with the heated cooling liquid, the converged cooling liquid flows through the first valve interface (21) of the three-way valve (2) and the water pump inlet (312) of the pump head (31) to enter the pump head (31) for pressurization, the pressurized cooling liquid flows through the water pump outlet (311) of the pump head (31) and the second interface (12) of the heater (1) to enter the second path of liquid discharge channel (102), and the cooling liquid is discharged from the fourth interface (14) of the heater (1) after being heated in the second path of liquid discharge channel (102).
3. A fuel cell system thermal management apparatus according to claim 2, wherein: the first interface (11) and the second interface (12) are flange connection surfaces, and the third interface (13) and the fourth interface (14) are connection water nozzles; the first valve interface (21) and the second valve interface (22) are flange connection surfaces, and the third valve interface (23) is connected with a water nozzle; the water pump outlet (311) and the water pump inlet (312) are flange connection surfaces.
4. A fuel cell system thermal management apparatus according to claim 3, wherein: the integrated controller (33) comprises a controller body (331), a high-voltage connector (332) and a plurality of low-voltage connectors (333) which are arranged on the controller body (331), and the controller body (331) is arranged at the other end of the motor (32).
5. A fuel cell system thermal management apparatus according to claim 4, wherein: the heater (1) is provided with a heater low-voltage interface (15) and a heater high-voltage interface (16), and the heater low-voltage interface (15) and the heater high-voltage interface (16) are respectively electrically connected with a low-voltage connector (333) and a high-voltage connector (332) of the controller body (331) through wire harnesses.
6. A fuel cell system thermal management apparatus according to claim 5, wherein: the three-way valve (2) is provided with a three-way valve low-pressure connector (24), and the three-way valve low-pressure connector (24) is electrically connected with a low-pressure connector (333) on the controller body (331) through a wire harness.
7. A fuel cell system thermal management apparatus according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: a sealing groove (3111) is arranged on the end face of a water pump outlet (311) of the pump head (31), a sealing ring is arranged in the sealing groove (3111), and the sealing ring is tightly pressed in the sealing groove (3111) when the water pump outlet (311) is connected with a second interface (12) of the heater (1).
8. A fuel cell system thermal management apparatus according to claim 7, wherein: the first interface (11) and the second interface (12) are arranged on the same side of the heater (1), and the third interface (13) and the fourth interface (14) are arranged on the same side of the heater (1).
9. A fuel cell system comprising a fuel cell stack module (100), a fuel cell system controller, a cooling system (200), an air intake system (300) and a hydrogen supply system (400), the cooling system (200) comprising a thermal management device, an auxiliary coolant device and an external circulation coolant device, characterized in that: the thermal management device is the fuel cell system thermal management device according to any one of claims 1 to 8;
the fourth interface (14) of the heater (1) is respectively connected with a cooling liquid inlet of the fuel cell stack module, an auxiliary inlet of the auxiliary cooling liquid device and an external circulation inlet of the external circulation cooling liquid device; the third interface (13) of the heater (1) is respectively connected with a cooling liquid outlet of the fuel cell stack module (100) and an auxiliary cooling outlet of the auxiliary cooling liquid device; the third valve interface (23) of the three-way valve (2) is connected with an external circulation outlet of the external circulation cooling liquid device;
a first temperature sensor and a pressure sensor are arranged at the cooling liquid inlet of the fuel cell stack module (100);
the cooling liquid flowing out of the cooling liquid outlet of the fuel cell stack module (100) and the cooling liquid flowing out of the auxiliary cooling outlet of the auxiliary cooling liquid device are converged and then enter the third interface (13) of the heater (1) together to flow into the first path of liquid inlet channel (101), and the cooling liquid flows through the first interface (11) of the heater (1) and the third valve interface (23) of the three-way valve (2) to enter the three-way valve (2) after being heated in the first path of liquid inlet channel (101); the cooling liquid flowing out of the external circulation outlet of the external circulation cooling liquid device enters into the second valve interface (22) of the three-way valve (2) to be converged with the heated cooling liquid, the converged cooling liquid flows through the first valve interface (21) of the three-way valve (2) and the water pump inlet (312) of the pump head (31) to enter into the pump head (31) for pressurization, the pressurized cooling liquid flows through the water pump outlet (311) of the pump head (31) and the second interface (12) of the heater (1) to enter into the second liquid discharge channel (102), the cooling liquid is heated in the second liquid discharge channel (102) and then is discharged from the fourth interface (14) of the heater (1) to flow into the cooling liquid inlet of the fuel cell stack module (100), the auxiliary inlet of the auxiliary cooling liquid device and the external circulation inlet of the external circulation cooling liquid device, the first temperature sensor and the pressure sensor feed back the temperature and pressure signals of the cooling liquid entering into the fuel cell stack module (100) to the integrated controller (33), and the integrated controller (33), the motor (1) and the three-way valve (32) are controlled to work.
10. A fuel cell system according to claim 9, wherein: the cooling liquid outlet of the fuel cell stack module (100) is provided with a second temperature sensor, the second temperature sensor monitors the cooling liquid temperature of the cooling liquid outlet of the fuel cell stack module (100), the second temperature sensor transmits cooling liquid temperature data entering the cooling liquid outlet of the fuel cell stack module (100) to a fuel cell system controller, the fuel cell system controller transmits control signals to an integrated controller (33), and the integrated controller (33) controls the heater (1), the three-way valve (2) and the motor (32) to work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223356102.6U CN218996774U (en) | 2022-12-14 | 2022-12-14 | Fuel cell system heat management device and fuel cell system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223356102.6U CN218996774U (en) | 2022-12-14 | 2022-12-14 | Fuel cell system heat management device and fuel cell system |
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| CN202223356102.6U Active CN218996774U (en) | 2022-12-14 | 2022-12-14 | Fuel cell system heat management device and fuel cell system |
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