CN117855519A - Self-temperature-control radiator, control method and fuel cell system - Google Patents
Self-temperature-control radiator, control method and fuel cell system Download PDFInfo
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- CN117855519A CN117855519A CN202410035740.2A CN202410035740A CN117855519A CN 117855519 A CN117855519 A CN 117855519A CN 202410035740 A CN202410035740 A CN 202410035740A CN 117855519 A CN117855519 A CN 117855519A
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- 239000000446 fuel Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000110 cooling liquid Substances 0.000 claims abstract description 121
- 238000001816 cooling Methods 0.000 claims abstract description 92
- 239000007788 liquid Substances 0.000 claims abstract description 77
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 239000002826 coolant Substances 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 18
- 230000017525 heat dissipation Effects 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 12
- 239000012809 cooling fluid Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04723—Temperature of the coolant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a self-temperature-control radiator, a control method and a fuel cell system, which comprise a radiator core body and a liquid cooling fan, wherein air flow driven by rotation of the liquid cooling fan passes through the inside of the radiator core body to exchange heat so as to take away heat, and the radiator core body also comprises a cooling liquid outlet split-flow interface; the liquid cooling fan comprises a liquid cooling motor and fan blades, a cooling liquid flow channel is arranged in a shell component of the liquid cooling motor, a motor cooling liquid inlet and a motor cooling liquid outlet are respectively communicated with two ends of the cooling liquid flow channel, and a cooling liquid outlet shunt interface is communicated with the motor cooling liquid inlet through a pipeline; the temperature sensor is arranged at the cooling liquid inlet of the motor to detect the temperature T1 of the cooling liquid and transmit the temperature T1 to the control circuit board, the control circuit board receives an external temperature control instruction T, the rotating speed of the liquid cooling motor is regulated according to the temperature T1 of the cooling liquid at the cooling liquid inlet of the motor to form closed loop control, and the temperature is fed back quickly and accurately, so that the automatic temperature control of the radiator is realized, the control complexity of a system is reduced, and the strategy is simple.
Description
Technical field:
the utility model relates to a self-temperature-control radiator, a control method and a fuel cell system.
The background technology is as follows:
the fuel cell is an energy conversion device for generating electric energy through electrochemical reaction of hydrogen and oxygen, and has the advantages of high energy conversion efficiency, simple structure, low noise, no pollution and the like. In addition to generating electricity and water during the fuel cell reaction, a large amount of heat is released. The released heat needs to be dissipated to the outside through a cooling system in the fuel cell to ensure the normal operation of the fuel cell, wherein the radiator is a key component for transferring heat in the cooling system.
The radiator for the vehicle is generally composed of a radiator core and a plurality of liquid cooling fans. The liquid cooling fan rotates to drive air to flow, and the air exchanges heat with cooling liquid passing through the inside of the radiator core body to take away heat. The heat radiating core size of the radiator is limited by the space in which the vehicle is disposed. The new energy vehicles, in particular fuel cell vehicles, are increasingly powered and the heat dissipation requirements are increasing. In the case where the area size of a single heat sink is limited, the heat dissipation capacity of the system is generally increased by increasing the number of heat sinks. After the number of the radiators is increased, the radiators are arranged in parallel, namely, a main radiating pipeline is divided into a plurality of paths, then flows through the radiators through inlets of the radiators, is merged into a plurality of paths from outlets of the radiators, and is led into a cooling inlet of the fuel cell module. Due to the diversity of the placement of the heat sinks, the water resistance of each loop in parallel in the cooling system and the flow of liquid through each heat sink are difficult to achieve. The fan generally adopts rotation speed control, and the fan generally adopts unified rotation speed control to reduce control complexity, so that the outlet temperature of each radiator is difficult to keep consistent.
That is, the fuel cell heat dissipation system mostly adopts a scheme that a plurality of fans are arranged on a large-area radiator, and the heat dissipation capacity is increased by increasing the number of the radiator; the rotating speed of the fan is calculated by the upper controller according to the heat dissipation requirement, and is generally the unified rotating speed of a plurality of fans, or a plurality of different rotating speeds are given through a complex control strategy, so that the problems or defects still exist: the multi-fan radiator solution of the prior art can cause the core area of the radiator to be too large, be poorly arranged on the vehicle, gradually reduce the temperature along the liquid flow direction, make the heat dissipation performance of the tail fan difficult to be exerted, and increase the noise due to the multi-fan (i.e. multi-fan). The heat dissipation capacity is increased by increasing the number of the radiators, so that the water resistance and the flow rate of each parallel circuit of the cooling system are hardly the same, and the outlet temperature of each radiator is hardly kept consistent. On the rotational speed control, the different rotational speed strategies of control different position fans are comparatively complicated, and can't reach the purpose of increasing the biggest heat dissipation capacity, and cooling system temperature's stability is relatively poor, and the unable quick response demand of temperature.
The existing fuel cell heat dissipation system basically uses a fuel cell controller to collect the inlet temperature of a galvanic pile to indirectly control the rotation speed of a radiator fan, see patent numbers 201811320219.4 and patent names: an utility model patent of a cooling circulation system of a fuel cell. The liquid cooling fan motor generally adopts air cooling, and the real temperature of the outlet of the radiator cannot be detected; because the liquid path is longer, temperature response delay is easy to occur; temperature non-uniformity also easily appears when many radiators, leads to going into heap temperature jump, causes the injury to the electric pile.
Therefore, it is desirable to provide a heat sink that can simultaneously ensure the stability and fast response of the temperature of the heat dissipating system while satisfying the heat dissipation of the system.
The utility model comprises the following steps:
the utility model aims to provide a self-temperature-control radiator and a fuel cell system, which solve the technical problems that in the scheme of a multi-fan radiator of the current fuel cell system, namely, a main radiating pipeline is divided into multiple paths, then the main radiating pipeline flows through the radiator through each radiator inlet, and then the main radiating pipeline is integrated into one path from each radiator outlet, and the main radiating pipeline is led into a cooling inlet of a fuel cell module.
A second object of the present utility model is to provide a method for controlling a self-temperature-controlled radiator, which is used for simplifying a scheme rotational speed control strategy of a multi-fan radiator of a current fuel cell system, ensuring consistent outlet temperature of each radiator, and improving quick response capability.
The aim of the utility model is achieved by the following technical scheme.
The utility model provides a self temperature control radiator, includes radiator core and liquid cooling fan, and the radiator core is including being located inside heat dissipation pipeline, setting in radiator coolant inlet and the radiator coolant outlet in the outside, and radiator coolant inlet and radiator coolant outlet connect the both ends of heat dissipation pipeline, utilize the air current that the rotation of liquid cooling fan drove to pass radiator core inside and carry out heat exchange and take away heat, its characterized in that:
the radiator core also comprises a cooling liquid outlet split-flow interface;
the liquid cooling fan comprises a liquid cooling motor and fan blades, the liquid cooling motor comprises a stator assembly, a rotor assembly, a shell assembly and a control circuit board, a cooling liquid flow channel is arranged in the shell assembly, a motor cooling liquid inlet and a motor cooling liquid outlet are arranged outside the shell assembly, and the motor cooling liquid inlet and the motor cooling liquid outlet are respectively communicated with two ends of the cooling liquid flow channel so as to take away heat generated during the working of the liquid cooling motor by using the flow of cooling liquid; the cooling liquid outlet shunt interface is communicated with the motor cooling liquid inlet through a pipeline;
the temperature sensor is arranged at the cooling liquid inlet of the motor to detect the temperature T1 of the cooling liquid and transmit the cooling liquid to the control circuit board, the control circuit board receives an external temperature control instruction T, and the rotating speed of the liquid cooling motor is regulated according to the temperature T1 of the cooling liquid at the cooling liquid inlet of the motor to form closed loop control.
The shell assembly comprises a motor shell and a controller shell, wherein the stator assembly and the rotor assembly are arranged in the motor shell, the control circuit board is arranged in the controller shell, the cooling liquid runner is arranged in the motor shell, or the cooling liquid runner is arranged in the controller shell, or the cooling liquid runner is simultaneously arranged in the motor shell and the controller shell.
The cooling liquid flowing out from the cooling liquid outlet of the motor flows into the expansion water tank.
The liquid cooling motor in the liquid cooling fan is a motor powered by a high-voltage direct-current power supply, and the high-voltage direct-current power supply provides at least 600V DC voltage.
The control circuit board integrates the microprocessor, the inverter circuit and the motor operation parameter detection circuit, and the motor operation parameter detection circuit sends real-time data of motor operation to the microprocessor MCU, and the microprocessor MCU controls the inverter circuit to work.
The motor operation parameter detection circuit is a rotor position detection circuit or a phase current detection circuit.
The radiator core is also provided with an exhaust port.
The control method of the self-temperature-control radiator is characterized by comprising the following steps of: the control circuit board receives an external temperature control instruction T, adjusts the rotating speed of the liquid cooling motor according to the temperature T1 of the cooling liquid at the cooling liquid inlet of the motor, and controls the rotating speed n1 of the liquid cooling motor to be increased when T1 is more than T so as to reduce the temperature T1 until the temperature T1 is not more than T; when T1 is less than T, the rotation speed n1 of the liquid cooling motor is controlled to decrease to raise the temperature T1, and finally, t1=t is maintained, and the rotation speed n1 is maintained unchanged.
A fuel cell system comprises a pile module, a hydrogen supply system, an air supply system, a cooling system and a fuel cell system controller, wherein the cooling system comprises a three-way valve, a radiator, a heater and a water pump, and cooling liquid from the pile module flows back to the pile module through the three-way valve, the radiator and the water pump; the method is characterized in that: the radiator is the self-temperature-control radiator; the control circuit board receives a temperature control instruction T of the fuel cell system controller.
The plurality of the self-temperature-control radiators are connected in parallel, the temperature control instruction T sent by the fuel cell system controller is simultaneously transmitted to each self-temperature-control radiator, the liquid cooling fans of each self-temperature-control radiator automatically adjust the rotating speed according to the self conditions, and finally, the cooling liquid temperature of the cooling liquid outlet of each self-temperature-control radiator reaches the control requirement.
Compared with the prior art, the utility model has the following effects:
effect 1: the cooling liquid temperature of the cooling liquid outlet of the radiator is coupled with the cooling liquid temperature of the cooling liquid inlet of the motor of the liquid cooling fan, a temperature sensor is arranged at the motor cooling liquid inlet to detect the cooling liquid temperature T1 and transmit the cooling liquid temperature to the control circuit board, the control circuit board receives an external temperature control instruction T, the rotating speed of the liquid cooling motor is regulated according to the cooling liquid temperature T1 at the motor cooling liquid inlet to form closed loop control, and the rapid and accurate feedback of the temperature is realized, so that the automatic temperature control of the radiator is realized.
Effect 2: the fuel cell system controller sends a single temperature control instruction, so that the automatic temperature control of the radiators at different positions can be realized, the liquid cooling fans of the radiators are controlled at different rotating speeds, the complexity of system control is reduced, and the strategy is simple.
Effect 3: the temperature detection of the motor cooling liquid inlet of the liquid cooling fan is more forward on the liquid loop, the temperature response is quick, the hysteresis of waterway temperature feedback is reduced, and adverse effects such as pile damage caused by ultrahigh temperature of the pile module inlet are effectively avoided.
Effect 4: the automatic control of the outlet temperature of the radiator is realized, so that the radiator is flexible to arrange, the pipeline is different in length, and the cooling liquid temperature balance of the parallel multi-branch radiator of the cooling system can be met without complex water path flow pressure drop balance design.
Description of the drawings:
fig. 1 is a perspective view of a radiator according to a first embodiment of the present utility model;
fig. 2 is a front view of a heat sink according to a first embodiment of the present utility model;
fig. 3 is a perspective view of a liquid cooling fan of a radiator according to a first embodiment of the present utility model;
fig. 4 is a cross-sectional view of a liquid cooling fan of a radiator according to a first embodiment of the present utility model;
fig. 5 is a perspective view of a liquid-cooled motor of a radiator according to a first embodiment of the present utility model;
fig. 6 is a structural cross-sectional view of a liquid-cooled motor of a radiator according to a first embodiment of the present utility model;
fig. 7 is a sectional view showing the structure of a motor controller of a liquid-cooled motor of a radiator according to the first embodiment of the present utility model;
fig. 8 is a circuit block diagram of a motor controller of a liquid-cooled motor of a radiator according to the first embodiment of the present utility model;
fig. 9 is a block diagram showing the structure of a fuel cell system according to a second embodiment of the utility model;
fig. 10 is a schematic structural view of a cooling system of a fuel cell system according to a second embodiment of the present utility model;
fig. 11 is a specific piping connection diagram of a cooling system of a fuel cell system of a second embodiment of the utility model;
fig. 12 is a schematic diagram showing connection between a fuel cell system controller and each radiator according to the third embodiment of the present utility model;
fig. 13 is a flowchart of the operation of the heat sinks of the third 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 8, the embodiment provides a self-temperature-control radiator, which comprises a radiator core 1 and a liquid cooling fan 2, wherein the radiator core 1 comprises a heat dissipation pipeline (not shown in the drawing) positioned inside, a radiator cooling liquid inlet 11 and a radiator cooling liquid outlet 12 arranged outside, the radiator cooling liquid inlet 11 and the radiator cooling liquid outlet 12 are connected with two ends of the heat dissipation pipeline, and air flow driven by rotation of the liquid cooling fan 2 passes through the inside of the radiator core 1 to exchange heat to take away heat, and the self-temperature-control radiator is characterized in that:
the radiator core 1 also comprises a cooling liquid outlet split-flow interface 13;
the liquid cooling fan 2 comprises a liquid cooling motor 21 and a fan blade 22, the liquid cooling motor 21 comprises a stator assembly 211, a rotor assembly 212, a shell assembly 213 and a control circuit board 214, a cooling liquid flow channel 215 is arranged in the shell assembly 213, a motor cooling liquid inlet 216 and a motor cooling liquid outlet 217 are arranged outside the shell assembly 213, and the motor cooling liquid inlet 216 and the motor cooling liquid outlet 217 are respectively communicated with two ends of the cooling liquid flow channel 215 so as to take away heat generated during the working of the liquid cooling motor 21 by using the flow of cooling liquid; the coolant outlet tap 13 communicates with the motor coolant inlet 216 via a conduit 218;
a temperature sensor 219 is installed at the motor coolant inlet 216 to detect the coolant temperature T1 and transmit it to the control circuit board 214, and the control circuit board 214 receives the external temperature control command T and adjusts the rotational speed of the liquid-cooled motor 21 according to the coolant temperature T1 at the motor coolant inlet 216 to form closed-loop control.
The heat dissipation pipeline inside the radiator core 1 is a common design, and reference may be made to the application number: 202020371265.3, entitled "plate-fin fuel cell radiator," is not described in detail herein.
According to the utility model, the cooling liquid temperature of the cooling liquid outlet 12 of the radiator core 1 is coupled with the cooling liquid temperature of the motor cooling liquid inlet 216 of the liquid cooling fan 2, a temperature sensor is arranged at the motor cooling liquid inlet 216 to detect the cooling liquid temperature T1 and transmit the cooling liquid temperature to the control circuit board, the control circuit board receives an external temperature control instruction T, the rotating speed of the liquid cooling motor is regulated according to the cooling liquid temperature T1 at the motor cooling liquid inlet to form closed loop control, and the rapid and accurate feedback of the temperature is realized, so that the automatic temperature control of the radiator is realized. The temperature detection of the motor cooling liquid inlet 216 of the liquid cooling fan 2 is more forward on the liquid loop, the temperature response is quick, the hysteresis of waterway temperature feedback is reduced, and adverse effects such as pile damage caused by the fact that the traditional technical scheme detects the temperature at the inlet of the pile module and the temperature of the cooling liquid at the inlet of the pile module is ultrahigh and cannot be processed in time are effectively avoided. The automatic control of the outlet temperature of the radiator is realized, so that the radiator is flexible to arrange, the pipeline is different in length, and the cooling liquid temperature balance of the parallel multi-branch radiator of the cooling system can be met without complex water path flow pressure drop balance design.
The above-mentioned housing assembly 213 includes a motor housing 213a and a controller housing 213b, the stator assembly 211 and the rotor assembly 212 are installed in the motor housing 213a, the control circuit board 214 is installed in the controller housing 213b, the cooling fluid flow channel 215 is arranged in the motor housing 213a, or the cooling fluid flow channel 215 is arranged in the controller housing 213b, or the cooling fluid flow channel 215 is simultaneously arranged in the motor housing 213a and the controller housing 213b, and the structure is simple, the layout is reasonable, and the flexibility is changeable.
The cooling fluid flowing out from the motor cooling fluid outlet 217 flows into the expansion tank, so that the cooling system can be reused.
The liquid cooling motor 21 in the liquid cooling fan 2 is a motor powered by a high-voltage direct current power supply, and the high-voltage direct current power supply provides at least 600V DC voltage, so that the requirements of high power and high rotation speed of the motor are met, and the heat dissipation capacity is improved.
The control circuit board 214 integrates a microprocessor, an inverter circuit and a motor operation parameter detection circuit, the motor operation parameter detection circuit sends real-time data of motor operation to a microprocessor MCU, the microprocessor MCU controls the inverter circuit to work, the motor operation parameter detection circuit is a rotor position detection circuit or a phase current detection circuit, and the microprocessor (i.e. a singlechip MCU) is provided with a function of receiving an external temperature control instruction, realizes closed-loop control and is also convenient for data communication with the outside.
The radiator core 1 described above is also provided with an exhaust port 14.
Embodiment two:
as shown in fig. 9, 10, 11, 12, and 13, a fuel cell system includes a stack module, a hydrogen supply system, an air supply system, a cooling system, and a fuel cell system controller, wherein the cooling system includes a three-way valve, a radiator, a heater, and a water pump, and a coolant from the stack module flows back to the stack module through the three-way valve, the radiator, and the water pump; the method is characterized in that: the radiator is the self-temperature-control radiator according to the first embodiment; the control wiring board 214 receives a temperature control command T of the fuel cell system controller.
The above-mentioned self-temperature-control radiators are several and are connected in parallel (only 2 self-temperature-control radiators are drawn in parallel in fig. 11, only the space based on the drawing is limited, and it can not be drawn completely), in fig. 12, the temperature control instruction T sent by the fuel cell system controller is transferred to each self-temperature-control radiator, and the rotation speed of the liquid cooling fan 2 of each self-temperature-control radiator is automatically regulated according to its own condition, so that finally the cooling liquid temperature of the radiator cooling liquid outlet 12 of each self-temperature-control radiator can be reached to the control requirement.
The specific working principle is as follows: as shown in fig. 12, the coolant passes through the stack module of the fuel cell to carry out heat, flows from a coolant outlet (not shown) of the stack module to a radiator coolant inlet 11, and after a part of the heat is dissipated by the common heat exchange action of the radiator core 1 and the liquid cooling fan 2, the coolant flows out from a radiator coolant outlet 12; at this time, the temperature of the coolant is lowered than the temperature of the coolant at the radiator coolant inlet 11, and then flows to the coolant inlet (not shown) of the stack module. A cooling liquid outlet split-flow interface 13 is arranged on the water outlet side of the radiator core 1; the temperature of the coolant flowing out at the coolant outlet split port 13 is identical to the temperature flowing out at the radiator coolant outlet 12 of the radiator core 1, i.e., is close to the inlet temperature of the stack module, a temperature sensor 219 is installed at the motor coolant inlet 216 to detect the coolant temperature T1 and transmit it to the control wiring board 214, the temperature sensor signal is directly hard-wired to the control wiring board 214 of the liquid cooling fan (not shown), the control wiring board 214 of the liquid cooling fan controls the rotational speed of the fan 2 based on the temperature signal, the outlet temperature of the radiator core 1 is transmitted to the motor coolant inlet 216 provided at the liquid cooling fan 2 in the shortest liquid flow path, and the temperature sensor 219 is installed to feed back the liquid cooling fan by the temperature sensor 219 in response to the rotational speed control. The cooling liquid supplied to the liquid cooling fan 2 passes through the cooling liquid flow path 215 of the liquid cooling fan 2, and then flows into the expansion tank from the motor cooling liquid outlet 217 of the liquid cooling fan 2.
It has the following advantages: effect 1: the cooling liquid temperature of the cooling liquid outlet of the radiator is coupled with the cooling liquid temperature of the cooling liquid inlet of the motor of the liquid cooling fan, a temperature sensor is arranged at the motor cooling liquid inlet to detect the cooling liquid temperature T1 and transmit the cooling liquid temperature to the control circuit board, the control circuit board receives an external temperature control instruction T, the rotating speed of the liquid cooling motor is regulated according to the cooling liquid temperature T1 at the motor cooling liquid inlet to form closed loop control, and the rapid and accurate feedback of the temperature is realized, so that the automatic temperature control of the radiator is realized. Effect 2: the fuel cell system controller sends a single temperature control instruction, so that the automatic temperature control of the radiators at different positions can be realized, the liquid cooling fans of the radiators are controlled at different rotating speeds, the complexity of system control is reduced, and the strategy is simple. Effect 3: the temperature detection of the motor cooling liquid inlet of the liquid cooling fan is more forward on the liquid loop, the temperature response is quick, the hysteresis of waterway temperature feedback is reduced, and adverse effects such as pile damage caused by ultrahigh temperature of the pile module inlet are effectively avoided. Effect 4: the automatic control of the outlet temperature of the radiator is realized, so that the radiator is flexible to arrange, the pipeline is different in length, and the cooling liquid temperature balance of the parallel multi-branch radiator of the cooling system can be met without complex water path flow pressure drop balance design.
Example III
As shown in fig. 9, 10, 11, 12 and 13, there are 1 to m heat sinks, namely, a heat sink 1 and a heat sink 2 and … … heat sink m, and the heat sink 1 and the heat sink 2 and … … heat sinks m are all self-temperature-control heat sinks according to the first embodiment, the fuel cell system controller sends a temperature control command T to the m heat sinks at the same time, and the liquid cooling fans 2 of the self-temperature-control heat sinks automatically adjust the rotation speed according to the self-condition, so as to finally realize that the cooling liquid temperature of the heat sink cooling liquid outlets 12 of the self-temperature-control heat sinks reaches the control requirement, that is, the cooling liquid temperature flowing out from the heat sink cooling liquid outlets 12 is basically equal to T.
The control strategy of each radiator is as follows: the control circuit board 214 of the liquid cooling motor receives an external temperature control instruction T, adjusts the rotating speed of the liquid cooling motor 21 according to the temperature T1 of the cooling liquid at the cooling liquid inlet 216 of the motor, and controls the rotating speed n1 of the liquid cooling motor 21 to increase when T1 is more than T so as to reduce the temperature T1 until the temperature T1 is not more than T; when T1 < T, the rotation speed n1 of the liquid-cooled motor 21 is controlled to decrease to raise the temperature T1, and finally t1=t is maintained, while the rotation speed n1 is maintained unchanged.
The fuel cell system controller of the utility model sends a single temperature control instruction, thus realizing the automatic temperature control of the radiators at different positions, controlling different rotation speeds of the liquid cooling fans of a plurality of radiators, reducing the complexity of system control, having simple strategy and realizing the automatic control of the outlet temperature of the radiators, leading the radiators to be arranged flexibly and the lengths of pipelines to be different, and meeting the temperature balance of the cooling liquid of the parallel multi-branch radiator of the cooling system without the need of complex water path flow pressure drop balance design.
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. The utility model provides a self temperature control radiator, includes radiator core (1) and liquid cooling fan (2), radiator core (1) including being located inside heat dissipation pipeline, radiator coolant inlet (11) and radiator coolant outlet (12) of setting in the outside, radiator coolant inlet (11) and radiator coolant outlet (12) connect the both ends of heat dissipation pipeline, utilize the air current that the rotation of liquid cooling fan (2) drove to pass radiator core (1) inside and carry out heat exchange, its characterized in that:
the radiator core (1) also comprises a cooling liquid outlet split-flow interface (13);
the liquid cooling fan (2) comprises a liquid cooling motor (21) and a fan blade (22), the liquid cooling motor (21) comprises a stator assembly (211), a rotor assembly (212), a shell assembly (213) and a control circuit board (214), a cooling liquid flow channel (215) is arranged in the shell assembly (213), a motor cooling liquid inlet (216) and a motor cooling liquid outlet (217) are arranged outside the shell assembly (213), and the motor cooling liquid inlet (216) and the motor cooling liquid outlet (217) are respectively communicated with two ends of the cooling liquid flow channel (215) so as to take away heat generated during the working of the liquid cooling motor (21) by using the flow of cooling liquid; the cooling liquid outlet split-flow interface (13) is communicated with the motor cooling liquid inlet (216) through a pipeline (218);
a temperature sensor (219) is arranged at the motor cooling liquid inlet (216) to detect the cooling liquid temperature T1 and transmit the cooling liquid temperature T1 to the control circuit board (214), the control circuit board (214) receives an external temperature control instruction T, and the rotating speed of the liquid cooling motor (21) is regulated according to the cooling liquid temperature T1 at the motor cooling liquid inlet (216) to form closed loop control.
2. A self-temperature controlling heat sink as claimed in claim 1, wherein: the shell assembly (213) comprises a motor shell (213 a) and a controller shell (213 b), the stator assembly (211) and the rotor assembly (212) are arranged in the motor shell (213 a), the control circuit board (214) is arranged in the controller shell (213 b), the cooling liquid flow channel (215) is arranged in the motor shell (213 a), or the cooling liquid flow channel (215) is arranged in the controller shell (213 b), or the cooling liquid flow channel (215) is arranged in the motor shell (213 a) and the controller shell (213 b) at the same time.
3. A self-temperature-regulating radiator according to claim 1 or 2, characterized in that: the cooling liquid flowing out from the motor cooling liquid outlet (217) flows into the expansion water tank.
4. A self-temperature-regulating radiator according to claim 1 or 2, characterized in that: the liquid cooling motor (21) in the liquid cooling fan (2) is a motor powered by a high-voltage direct current power supply, and the high-voltage direct current power supply provides at least 600V DC voltage.
5. The self-temperature-regulating heat sink as claimed in claim 4, wherein: the control circuit board (214) integrates the microprocessor, the inverter circuit and the motor operation parameter detection circuit, and the motor operation parameter detection circuit sends real-time data of motor operation to the microprocessor MCU, and the microprocessor MCU controls the inverter circuit to work.
6. The self-temperature-regulating heat sink as claimed in claim 5, wherein: the motor operating parameter detection circuit is either a rotor position detection circuit or a phase current detection circuit.
7. The self-temperature-regulating heat sink as defined in claim 6, wherein: the radiator core (1) is also provided with an exhaust port (14).
8. A control method of the self-temperature controlling radiator according to any one of claims 1 to 7, characterized in that: the control circuit board (214) receives an external temperature control instruction T, adjusts the rotating speed of the liquid cooling motor (21) according to the temperature T1 of cooling liquid at the cooling liquid inlet (216) of the motor, and controls the rotating speed n1 of the liquid cooling motor (21) to be increased when T1 is more than T so as to reduce the temperature T1 until the temperature T1 is not more than T; when T1 is less than T, the rotating speed n1 of the liquid cooling motor (21) is controlled to be reduced so as to raise the temperature T1, and finally, the rotating speed n1 is kept unchanged by T1=T.
9. A fuel cell system comprises a pile module, a hydrogen supply system, an air supply system, a cooling system and a fuel cell system controller, wherein the cooling system comprises a three-way valve, a radiator, a heater and a water pump, and cooling liquid from the pile module flows back to the pile module through the three-way valve, the radiator and the water pump; the method is characterized in that: the radiator is the self-temperature-control radiator as claimed in any one of claims 1 to 7; the control circuit board (214) receives a temperature control command T from the fuel cell system controller.
10. A fuel cell system according to claim 9, wherein: the temperature control instructions T sent by the fuel cell system controller are simultaneously transmitted to each self-temperature-control radiator, the liquid cooling fans (2) of each self-temperature-control radiator automatically adjust the rotating speed according to the self conditions, and finally, the cooling liquid temperature of the radiator cooling liquid outlets (12) of each self-temperature-control radiator reaches the control requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410035740.2A CN117855519A (en) | 2024-01-10 | 2024-01-10 | Self-temperature-control radiator, control method and fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410035740.2A CN117855519A (en) | 2024-01-10 | 2024-01-10 | Self-temperature-control radiator, control method and fuel cell system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117855519A true CN117855519A (en) | 2024-04-09 |
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ID=90530023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410035740.2A Pending CN117855519A (en) | 2024-01-10 | 2024-01-10 | Self-temperature-control radiator, control method and fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117855519A (en) |
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2024
- 2024-01-10 CN CN202410035740.2A patent/CN117855519A/en active Pending
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