CN113048080B - Booster pump system for hydrogen energy vehicle and control method - Google Patents

Booster pump system for hydrogen energy vehicle and control method Download PDF

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Publication number
CN113048080B
CN113048080B CN202110289620.1A CN202110289620A CN113048080B CN 113048080 B CN113048080 B CN 113048080B CN 202110289620 A CN202110289620 A CN 202110289620A CN 113048080 B CN113048080 B CN 113048080B
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gas
booster pump
pump system
temperature
motor
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CN113048080A (en
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周志荣
李毅
杨康生
胡倩澜
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Shenzhen Southern Dare Automotive Electronic Co Ltd
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Shenzhen Southern Dare Automotive Electronic Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • 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
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Fuel Cell (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The invention discloses a booster pump system for a hydrogen energy vehicle and a control method thereof, wherein the booster pump system for the hydrogen energy vehicle comprises a booster pump component, a reactor, a second expander, a vehicle motor and a ventilation component, the booster pump component comprises a booster motor, a compressor and a first expander, the booster motor, the compressor and the first expander are coaxially arranged, a mounting cavity is formed in the booster motor, the compressor is provided with an exhaust port, an oxygen inlet of the reactor is communicated with the exhaust port, the second expander is provided with a second expansion inlet and a second expansion outlet, the second expansion inlet is communicated with an air outlet of the reactor, the vehicle motor is provided with an air cooling flow channel, the ventilation component enables the booster pump system for the hydrogen energy vehicle to be provided with a first ventilation mode and a second ventilation mode which can be mutually switched, on one hand, the energy of gas exhausted by the reactor is fully utilized, on the other hand, the heat pipe control is convenient for the motor in the hydrogen energy vehicle.

Description

Booster pump system for hydrogen energy vehicle and control method
Technical Field
The invention relates to the technical field of hydrogen energy vehicles, in particular to a booster pump system for a hydrogen energy vehicle and a control method.
Background
The hydrogen fuel cell must work under relatively high gas pressure to obtain high power density and performance, so an air compressor with high efficiency and high compression ratio is needed to provide high-pressure air for the fuel cell, the high-pressure air is continuously discharged out of the stack body while providing a power generation environment condition through the stack of the hydrogen fuel cell, and the gas discharged from the stack still has high pressure, so that the prior art does not fully utilize the gas and the energy is greatly lost.
Disclosure of Invention
The invention mainly aims to provide a booster pump system for a hydrogen energy vehicle and a control method, and aims to fully utilize energy and realize better effects of energy conservation and emission reduction.
In order to achieve the above object, the present invention provides a booster pump system for a hydrogen energy vehicle, including:
the booster pump assembly comprises a booster motor, a compressor and a first expander, wherein the compressor and the first expander are positioned at two ends of the booster motor, the compressor and the first expander are coaxially arranged, an installation cavity for installing a rotor is formed in the booster motor, and an exhaust port is formed in the compressor;
the oxygen inlet of the reactor is communicated with the exhaust port;
the second expansion machine is provided with a second expansion inlet and a second expansion outlet, and the second expansion inlet is communicated with the gas outlet of the reactor;
a vehicle motor formed with an air cooling flow passage; and the number of the first and second groups,
the ventilation assembly is arranged among the booster pump assembly, the reactor and the vehicle motor, the ventilation assembly enables the booster pump system for the hydrogen energy vehicle to have a first ventilation mode and a second ventilation mode which can be mutually switched, when the ventilation assembly is in the first ventilation mode, gas is dried through a gas outlet of the reactor and then flows to the second expander and the installation cavity, and then is discharged to the outside through the first expander, and when the ventilation assembly is in the second ventilation mode, gas is dried through a gas outlet of the reactor and flows to the second expander and the gas cooling flow channel, and then is discharged to the outside through the first expander and the installation cavity.
Optionally, two communication ports are arranged in the installation cavity, and the first expander is provided with a first expansion inlet and a first expansion outlet;
the ventilation assembly comprises a four-way valve, the four-way valve comprises a first connecting port, a second connecting port, a third connecting port and a fourth connecting port, the first connecting port is communicated with the second expansion outlet, the second connecting port is communicated with one of the communicating ports of the installation cavities, the third connecting port is communicated with the air cooling flow channel, and the fourth connecting port is communicated with the first expansion outlet;
a first exhaust pipeline is arranged between the third connecting port and the air cooling flow channel in parallel;
and a second exhaust pipeline is arranged between the other communication port of the installation cavity and the first expansion inlet in parallel.
Optionally, a first check valve is disposed on a pipeline between the air cooling flow channel and the first expansion inlet, so that gas flows from the air cooling flow channel to the first expansion inlet; and/or the presence of a gas in the gas,
and a second one-way valve is arranged on a pipeline between the other communication port of the installation cavity and the first expansion inlet, so that gas can flow from the installation cavity to the first expansion inlet.
Optionally, an air dryer is arranged between the air outlet of the reactor and the first connecting port; and/or the presence of a gas in the gas,
the second expander is in driving connection with the first expander; and/or the presence of a gas in the gas,
a first electric control valve is arranged on the first exhaust pipeline; and/or the presence of a gas in the gas,
and a second electric control valve is arranged on the second exhaust pipeline.
Optionally, a first temperature sensor is arranged in the mounting cavity; and/or the presence of a gas in the gas,
and a second temperature sensor is arranged in a motor shell of the vehicle motor.
Optionally, two communication ports are arranged in the installation cavity, and the two communication ports are arranged at intervals along the circumferential direction of the installation cavity and are used for communicating with a pipeline on the ventilation assembly;
first temperature sensor sets up a plurality ofly, and is a plurality of first temperature sensor follows the circumference interval of installation cavity sets up, and evenly distributed is in two between the intercommunication mouth.
Optionally, the vehicle motor is provided in plurality.
The invention also discloses a control method of the booster pump system for the hydrogen energy vehicle, which comprises the following steps:
acquiring a first temperature of a coil in the booster motor;
switching the booster pump system for the hydrogen energy vehicle to be in the first ventilation mode when the first temperature is greater than a first threshold value;
and when the first temperature is lower than a first threshold value, selectively switching the booster pump system for the hydrogen energy vehicle to be in the first ventilation mode and the second ventilation mode.
Optionally, the step of selectively switching the booster pump system for a hydrogen-powered vehicle between the first ventilation mode and the second ventilation mode when the first temperature is less than a first threshold value comprises:
acquiring a second temperature of a coil in the vehicle motor;
when the first temperature is higher than the second temperature, switching the booster pump system for the hydrogen energy vehicle to be in the first ventilation mode;
and when the first temperature is lower than the second temperature, switching the booster pump system for the hydrogen energy vehicle to be in the second ventilation mode.
Optionally, two communication ports are arranged in the installation cavity, and the two communication ports are arranged at intervals along the circumferential direction of the installation cavity and are used for communicating with a pipeline on the ventilation assembly;
a plurality of first temperature sensors are arranged in the installation cavity, are arranged at intervals along the circumferential direction of the installation cavity and are uniformly distributed between the two communication ports;
the step of obtaining a first temperature of a coil within the booster motor comprises:
acquiring a plurality of temperature values of a plurality of first temperature sensors;
and calculating the first temperature according to the plurality of temperature values.
In the technical scheme provided by the invention, the booster pump system for the hydrogen energy vehicle comprises a booster pump assembly, a reactor stack, a second expander, a vehicle motor and a ventilation assembly, wherein the booster pump assembly comprises a booster motor, a compressor and a first expander which are positioned at two ends of the booster motor, the compressor and the first expander are coaxially arranged, a mounting cavity for mounting a rotor is formed in the booster motor, an exhaust port is formed in the compressor, an oxygen inlet of the reactor stack is communicated with the exhaust port, the second expander is provided with a second expansion inlet and a second expansion outlet, the second expansion inlet is communicated with an air outlet of the reactor stack, an air cooling flow channel is formed in the vehicle motor, and the ventilation assembly is arranged among the booster pump assembly, the reactor stack and the vehicle motor, the ventilation assembly enables the booster pump system for the hydrogen energy vehicle to have a first ventilation mode and a second ventilation mode which can be switched with each other, when the booster pump system is in the first ventilation mode, gas is dried by the gas outlet of the reactor, then flows to the second expander and the installation cavity, and is exhausted to the outside through the first expander, when the booster pump system is in the second ventilation mode, the gas is dried by the gas outlet of the reactor, flows to the second expander and the gas cooling flow passage, and is exhausted to the outside through the first expander and the installation cavity, on one hand, the energy of the gas exhausted by the reactor is fully utilized, on the other hand, different ventilation modes can be flexibly selected according to the use conditions of the booster motor and the vehicle motor, and then different modes are selected to utilize the gas exhausted from the reactor, on the premise that the energy of the gas exhausted by the reactor is fully utilized, and the heat pipe control of the motor in the hydrogen energy vehicle is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first embodiment of a booster pump system for a hydrogen energy vehicle according to the present invention;
FIG. 2 is a schematic flow diagram of the booster pump system for a hydrogen-powered vehicle of FIG. 1 in a first aeration mode;
FIG. 3 is a schematic flow diagram of the booster pump system for a hydrogen-powered vehicle of FIG. 1 in a second aeration mode;
FIG. 4 is a schematic flow chart illustrating a control method of a booster pump system for a hydrogen energy vehicle according to a first embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a control method of a booster pump system for a hydrogen energy vehicle according to a second embodiment of the present invention;
fig. 6 is a schematic flow chart of a control method of a booster pump system for a hydrogen energy vehicle according to a third embodiment of the present invention.
The reference numbers illustrate:
Figure BDA0002980644600000041
Figure BDA0002980644600000051
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The hydrogen fuel cell must work under relatively high gas pressure to obtain high power density and performance, so an air compressor with high efficiency and high compression ratio is needed to provide high-pressure air for the fuel cell, the high-pressure air is continuously discharged out of the stack body while providing a power generation environment condition through the stack of the hydrogen fuel cell, and the gas discharged from the stack still has high pressure, so that the prior art does not fully utilize the gas and the energy is greatly lost.
In view of the above, the present invention provides a booster pump system for a hydrogen energy vehicle, wherein fig. 1 to 3 are schematic structural views of an embodiment of the booster pump system for a hydrogen energy vehicle provided by the present invention.
Referring to fig. 1 to 3, the booster pump system 100 for a hydrogen energy vehicle includes a booster pump assembly, a reactor 4, a second expander 5, a vehicle motor 6, and a ventilation assembly 7, the booster pump assembly includes a booster motor 1, a compressor 2 and a first expander 3 at two ends of the booster motor 1, the compressor 2, and the first expander 3 are coaxially disposed, an installation cavity 11 for installing a rotor is formed in the booster motor 1, an exhaust port 21 is formed in the compressor 2, an oxygen inlet of the reactor 4 is communicated with the exhaust port 21, the second expander 5 has a second expansion inlet 51 and a second expansion outlet 52, the second expansion inlet 51 is communicated with an air outlet of the reactor 4, an air cooling flow channel 61 is formed in the vehicle motor 6, and the ventilation assembly 7 is disposed in the booster pump assembly, Between the reactor 4 and the vehicle motor 6, the ventilation assembly 7 makes the booster pump system 100 for hydrogen energy vehicles have a first ventilation mode and a second ventilation mode that can switch over each other, and in the first ventilation mode, gas passes through the gas outlet of the reactor 4 after being dried, and flows to the second expander 5 and the installation cavity 11, and then is discharged to the outside through the first expander 3, and in the second ventilation mode, gas passes through the gas outlet of the reactor 4 after being dried, and flows to the second expander 5 and the gas cooling channel 61, and then is discharged to the outside through the first expander 3 and the installation cavity 11.
In the technical scheme provided by the invention, the booster pump system 100 for the hydrogen energy vehicle comprises a booster pump assembly, a reactor 4, a second expander 5, a vehicle motor 6 and a ventilation assembly 7, wherein the booster pump assembly comprises a booster motor 1, a compressor 2 and a first expander 3 which are arranged at two ends of the booster motor 1, the compressor 2 and the first expander 3 are coaxially arranged, an installation cavity 11 for installing a rotor is formed in the booster motor 1, an exhaust port 21 is formed in the compressor 2, an oxygen inlet of the reactor 4 is communicated with the exhaust port 21, the second expander 5 is provided with a second expansion inlet 51 and a second expansion outlet 52, the second expansion inlet 51 is communicated with an air outlet of the reactor 4, an air cooling flow passage 61 is formed in the vehicle motor 6, and the ventilation assembly 7 is arranged on the booster pump assembly, Between the reactor 4 and the vehicle motor 6, the ventilation assembly 7 enables the booster pump system 100 for a hydrogen energy vehicle to have a first ventilation mode and a second ventilation mode which can be switched with each other, in the first ventilation mode, gas is dried through the gas outlet of the reactor 4, then flows to the second expander 5 and the installation cavity 11, and is discharged to the outside through the first expander 3, in the second ventilation mode, gas is dried through the gas outlet of the reactor 4, flows to the second expander 5 and the gas cooling channel 61, and then is discharged to the outside through the first expander 3 and the installation cavity 11, on one hand, the energy of the gas discharged from the reactor 4 is fully utilized, on the other hand, different ventilation modes can be flexibly selected according to the use conditions of the booster motor 1 and the vehicle motor 6, and then different modes are selected to utilize the gas exhausted from the reactor 4, so that the heat pipe control of the motor in the hydrogen energy vehicle is facilitated on the premise of fully utilizing the energy of the gas exhausted from the reactor 4.
It should be noted that, in the hydrogen energy vehicle, a large number of motors are used, for example, a main motor, mainly a permanent magnet synchronous motor, mainly playing a role in integral driving of the vehicle, and further, a starting motor, a wiper motor, a water tank fan motor, an air conditioner air outlet motor, and the like, and in many occasions of using the motors, the motors need to be cooled, so that the heat management of the motors is an important consideration.
Each of the motors has its own heat dissipation method, for example, a fan may be used for heat dissipation, and in the case of no fan for heat dissipation, an air cooling flow channel 61 may be formed in the motor, and gas may be introduced into the air cooling flow channel 61 for cooling, and the specific forming method of the air cooling flow channel 61 is not limited, and may be formed by machining or casting.
One or a plurality of the vehicle motors 6 may be provided, and the heat exchange flow paths between a plurality of the vehicle motors 6 may be connected in series or in parallel.
The ventilation module 7 is configured to enable the booster pump system 100 for a hydrogen-powered vehicle to have a first ventilation mode and a second ventilation mode that are switchable with each other, and to realize the switching function by a valve combination, in an embodiment, two communication ports are provided in the installation cavity 11, the first expander 3 is formed with a first expansion inlet 31 and a first expansion outlet 32, the ventilation module 7 includes a four-way valve 71, the four-way valve 71 includes a first connection port 711, a second connection port 712, a third connection port 713, and a fourth connection port 714, the first connection port 711 is communicated with the second expansion outlet 52, the second connection port 712 is communicated with one of the communication ports of the installation cavity 11, the third connection port 713 is communicated with the air-cooling flow passage 61, and the fourth connection port 714 is communicated with the first expansion outlet 32, a first exhaust pipeline 10a is arranged between the third connection port 713 and the air cooling flow channel 61 in parallel, a second exhaust pipeline 10b is arranged between the other communication port of the installation cavity 11 and the first expansion inlet 31 in parallel, and the booster pump system 100 for a hydrogen energy vehicle is switched between the first ventilation mode and the second ventilation mode conveniently by switching the four-way valve 71, so that a good effect is achieved.
In order to enable the gas flow to flow through a designated path in both the first ventilation mode and the second ventilation mode, in an embodiment, a first check valve 8a is disposed on a pipeline between the gas cooling channel 61 and the first expansion inlet 31, so that the gas flows from the gas cooling channel 61 to the first expansion inlet 31, and the gas is controlled to flow in one direction, so that energy loss caused by the gas flowing to other branches is reduced in the second ventilation mode, and a better effect is achieved.
In an embodiment, a second check valve 8b is disposed on a pipeline between the other communication port of the installation cavity 11 and the first expansion inlet 31, so as to allow gas to flow from the installation cavity 11 to the first expansion inlet 31.
After the second expander 5 expands and cools the gas, in order to reduce the electrical risk of entering the motor, in an embodiment, an air dryer 9 is disposed between the gas outlet of the reactor 4 and the first connection port 711, so as to dry the gas, and have a better effect.
In addition, the second expander 5 expands and cools the gas to generate kinetic energy, and in order to fully utilize the kinetic energy, in an embodiment, the second expander 5 is in driving connection with the first expander 3, and the kinetic energy generated by the second expander 5 can be converted into the kinetic energy generated by the first expander 3, so that the input power of the booster motor 1 can be reduced, and the effects of energy conservation and emission reduction are achieved.
In order to improve the coordination of the switching between the first ventilation mode and the second ventilation mode, in an embodiment, a first electrically controlled valve 11a is disposed on the first exhaust line 10a to facilitate the exhaust of the gas in the first ventilation mode, and a second electrically controlled valve 11b is disposed on the second exhaust line 10b to facilitate the exhaust of the gas in the second ventilation mode.
The switching between the first ventilation mode and the second ventilation mode may be performed using temperature as a reference parameter, and may be switched to the first ventilation mode to preferentially cool the booster motor 1 when the temperature in the booster motor 1 is high, and may be switched to the second ventilation mode to preferentially cool the motor 6 when the temperature of the motor 6 for a vehicle is high.
In an embodiment, be equipped with first temperature sensor in the installation cavity 11, be used for detecting motor temperature in the booster motor 1, be equipped with second temperature sensor in the motor casing of automobile-used motor 6, be used for detecting motor temperature in the automobile-used motor 6 can obtain the running state of motor in real time through temperature sensor to select different modes of ventilating according to the running state of motor, be convenient for to the thermal management of motor.
Further, first temperature sensor sets up a plurality ofly, and is a plurality of first temperature sensor follows the circumference interval of installation cavity 11 sets up, and evenly distributed is in two between the intercommunication mouth, so, through a plurality of first temperature sensor can obtain comprehensively the temperature distribution condition in the booster motor 1, can calculate through weighting coefficient or average method the temperature in the booster motor 1.
The following principle of switching the booster pump system 100 for a hydrogen-powered vehicle between the first ventilation mode and the second ventilation mode is as follows:
1. referring to fig. 2, in the first ventilation mode, the first exhaust pipeline 10a is controlled to be opened, after the gas is pressurized by the compressor 2, the gas flows through the reactor 4 for combustion reaction, the remaining gas flows to the second expander 5, the second expander 5 is expanded and cooled to reduce the temperature and pressure of the gas, at this time, the four-way valve 71 switches the first connection port 711 to be communicated with the second connection port 712, the gas flows through the installation cavity 11 from the four-way valve 71 to cool the stator coil or the rotor in the installation cavity 11, and then flows through the first expander 3, and the secondary expansion utilizes the internal energy of the gas, and is finally discharged to the outside from the first exhaust pipeline 10 a;
2. referring to fig. 3, in the second ventilation mode, the second exhaust line 10b is controlled to be opened, after the gas is pressurized by the compressor 2, the gas flows through the reactor 4 for combustion reaction, the remaining gas flows through the second expander 5, the second expander 5 is expanded and cooled to reduce the temperature and pressure of the gas, at this time, the four-way valve 71 switches the first connection port 711 to be communicated with the third connection port 713, the gas flows through the cooling flow channel of the vehicle motor 6 from the four-way valve 71 to cool the stator coil or the rotor in the cooling flow channel, then flows through the first expander 3, the internal energy of the gas is utilized by secondary expansion, and then flows through the installation cavity 11, and finally is exhausted to the outside from the second exhaust line 10 b;
fig. 4 to 6 show an embodiment of a method for controlling a booster pump system for a hydrogen energy vehicle according to the present invention.
Referring to fig. 4, fig. 4 is a schematic flow chart of a control method of a booster pump system for a hydrogen energy vehicle according to a first embodiment of the present invention, in this embodiment, the control method of the booster pump system for a hydrogen energy vehicle includes the following steps:
step S10, acquiring a first temperature of a coil in the booster motor 1;
step S20a, when the first temperature is larger than a first threshold value, switching the booster pump system 100 for the hydrogen energy vehicle and the control method to be in the first ventilation mode;
step S20b, when the first temperature is lower than a first threshold, selecting to switch the booster pump system 100 for a hydrogen energy vehicle and the control method between the first ventilation mode and the second ventilation mode;
it should be noted that the first threshold is a higher temperature in the booster motor 1, such as 60 ℃, 70 ℃, 80 ℃, and so on, and when the temperature in the booster motor 1 exceeds this value, it indicates that the temperature of the booster motor 1 is higher, and it is necessary to perform cooling, and at this time, the booster pump system 100 for a hydrogen energy vehicle and the control method are switched to be in the first ventilation mode.
In the technical scheme of the invention, by acquiring the first temperature of the coil in the booster motor 1, when the first temperature is greater than the first threshold value, the booster pump system 100 for a hydrogen-powered vehicle and the control method are switched to the first ventilation mode, when the first temperature is lower than a first threshold value, the booster pump system 100 for the hydrogen energy vehicle and the control method are selectively switched between the first ventilation mode and the second ventilation mode, on one hand, the energy of the gas discharged from the reactor 4 is fully utilized, on the other hand, according to the use conditions of the booster motor 1 and the vehicle motor 6, different ventilation modes can be flexibly selected, and then different modes are selected to utilize the gas exhausted from the reactor 4, on the premise of fully utilizing the energy of the gas discharged by the reactor 4, the heat pipe control of the motor in the hydrogen energy vehicle is facilitated.
Referring to fig. 5, fig. 5 is a schematic flow chart of a control method of a booster pump system for a hydrogen energy vehicle according to a second embodiment of the present invention, which is different from the first embodiment in that: the step of selectively switching the booster pump system 100 for a hydrogen energy vehicle and the control method to be in the first ventilation mode and the second ventilation mode when the first temperature is less than a first threshold value includes:
step S30, obtaining a second temperature of the coil in the vehicle motor 6;
step S40a, when the first temperature is higher than the second temperature, switching the booster pump system 100 for a hydrogen energy vehicle and the control method to be in the first ventilation mode;
and step S40b, when the first temperature is lower than the second temperature, switching the booster pump system 100 for the hydrogen energy source vehicle and the control method to be in the second ventilation mode.
The second temperature may be 60 ℃, 70 ℃, 80 ℃ or the like;
in the technical scheme of the invention, a second temperature of a coil in the vehicle motor 6 is obtained, when the first temperature is higher than the second temperature, the hydrogen energy vehicle booster pump system 100 and the control method are switched to be in the first ventilation mode, and when the first temperature is lower than the second temperature, the hydrogen energy vehicle booster pump system 100 and the control method are switched to be in the second ventilation mode, so that the ventilation mode of the hydrogen energy vehicle booster pump system 100 is reasonably regulated and controlled, and the heat pipe control of the motor in the hydrogen energy vehicle is facilitated.
Referring to fig. 6, fig. 6 is a schematic flow chart of a third embodiment of a control method of a booster pump system for a hydrogen energy vehicle according to the present invention, which is different from the first embodiment in that: the step of obtaining the first temperature of the coil in the booster motor 1 includes:
step S10a, acquiring a plurality of temperature values of the first temperature sensors;
step S10b, calculating the first temperature according to the plurality of temperature values.
It should be noted that the temperature distribution in the booster motor 1 can be obtained comprehensively by the plurality of first temperature sensors, and the temperature in the booster motor 1 can be calculated by a weighting coefficient or an average value method.
According to the technical scheme, the plurality of temperature values of the plurality of first temperature sensors are obtained, the first temperature is calculated according to the plurality of temperature values, and the temperature condition in the booster motor 1 can be conveniently and comprehensively mastered.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A booster pump system for a hydrogen energy vehicle, comprising:
the booster pump assembly comprises a booster motor, a compressor and a first expander, wherein the compressor and the first expander are positioned at two ends of the booster motor, the compressor and the first expander are coaxially arranged, an installation cavity for installing a rotor is formed in the booster motor, and an exhaust port is formed in the compressor;
the oxygen inlet of the reactor is communicated with the exhaust port;
the second expansion machine is provided with a second expansion inlet and a second expansion outlet, and the second expansion inlet is communicated with the gas outlet of the reactor;
a vehicle motor formed with an air cooling flow passage; and the number of the first and second groups,
the ventilation assembly is arranged among the booster pump assembly, the reactor and the vehicle motor, the ventilation assembly enables the booster pump system for the hydrogen energy vehicle to have a first ventilation mode and a second ventilation mode which can be mutually switched, when the ventilation assembly is in the first ventilation mode, gas is dried through a gas outlet of the reactor and then flows to the second expander and the installation cavity, and then is discharged to the outside through the first expander, and when the ventilation assembly is in the second ventilation mode, gas is dried through a gas outlet of the reactor and flows to the second expander and the gas cooling flow channel, and then is discharged to the outside through the first expander and the installation cavity.
2. The booster pump system for hydrogen-powered vehicles according to claim 1, wherein two communication ports are provided in the installation chamber, and the first expander is formed with a first expansion inlet and a first expansion outlet;
the ventilation assembly comprises a four-way valve, the four-way valve comprises a first connecting port, a second connecting port, a third connecting port and a fourth connecting port, the first connecting port is communicated with the second expansion outlet, the second connecting port is communicated with one of the communicating ports of the installation cavity, the third connecting port is communicated with the air cooling flow channel, and the fourth connecting port is communicated with the first expansion outlet;
a first exhaust pipeline is arranged between the third connecting port and the air cooling flow channel in parallel;
and a second exhaust pipeline is arranged between the other communication port of the installation cavity and the first expansion inlet in parallel.
3. The booster pump system for a hydrogen energy vehicle of claim 2, wherein a first check valve is disposed on a pipeline between the gas cooling flow channel and the first expansion inlet, so that gas flows from the gas cooling flow channel to the first expansion inlet; and/or the presence of a gas in the gas,
and a second one-way valve is arranged on a pipeline between the other communication port of the installation cavity and the first expansion inlet, so that gas can circulate from the installation cavity to the first expansion inlet.
4. The booster pump system for a hydrogen-powered vehicle of claim 2, wherein an air dryer is provided between the gas outlet of the reactor and the first connection port; and/or the presence of a gas in the gas,
the second expander is in driving connection with the first expander; and/or the presence of a gas in the gas,
a first electric control valve is arranged on the first exhaust pipeline; and/or the presence of a gas in the gas,
and a second electric control valve is arranged on the second exhaust pipeline.
5. The booster pump system for a hydrogen-powered vehicle of claim 1, wherein a first temperature sensor is provided in the installation cavity; and/or the presence of a gas in the gas,
and a second temperature sensor is arranged in a motor shell of the vehicle motor.
6. The booster pump system for a hydrogen energy vehicle of claim 5, wherein two communication ports are provided in the installation cavity, and the two communication ports are spaced apart along a circumferential direction of the installation cavity and are communicated with a pipeline on the vent assembly;
first temperature sensor sets up a plurality ofly, and is a plurality of first temperature sensor follows the circumference interval of installation cavity sets up, and evenly distributed is in two between the intercommunication mouth.
7. The booster pump system for a hydrogen-powered vehicle as claimed in claim 1, wherein a plurality of the vehicle motors are provided.
8. A method for controlling a booster pump system for a hydrogen-powered vehicle according to any one of claims 1 to 7, comprising the steps of:
acquiring a first temperature of a coil in the booster motor;
switching the booster pump system for the hydrogen energy vehicle to be in the first ventilation mode when the first temperature is greater than a first threshold value;
and when the first temperature is lower than a first threshold value, selectively switching the booster pump system for the hydrogen energy vehicle to be in the first ventilation mode and the second ventilation mode.
9. The control method of claim 8, wherein the step of selecting to switch the hydrogen-powered vehicle booster pump system between the first ventilation mode and the second ventilation mode when the first temperature is less than a first threshold value comprises:
acquiring a second temperature of a coil in the vehicle motor;
when the first temperature is higher than the second temperature, switching the booster pump system for the hydrogen energy vehicle to be in the first ventilation mode;
and when the first temperature is lower than the second temperature, switching the booster pump system for the hydrogen energy vehicle to be in the second ventilation mode.
10. The control method according to claim 8, wherein two communication ports are arranged in the installation cavity, and the two communication ports are arranged at intervals along the circumferential direction of the installation cavity and communicated with a pipeline on the ventilation assembly;
a plurality of first temperature sensors are arranged in the installation cavity, are arranged at intervals along the circumferential direction of the installation cavity and are uniformly distributed between the two communication ports;
the step of obtaining a first temperature of a coil within the booster motor comprises:
acquiring a plurality of temperature values of a plurality of first temperature sensors;
and calculating the first temperature according to the plurality of temperature values.
CN202110289620.1A 2021-03-17 2021-03-17 Booster pump system for hydrogen energy vehicle and control method Active CN113048080B (en)

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JP2005071830A (en) * 2003-08-26 2005-03-17 Mitsubishi Heavy Ind Ltd Hydrogen-fueled automobile
JP2006073404A (en) * 2004-09-03 2006-03-16 Toyota Motor Corp Power source cooling apparatus and vehicle loaded with it
JP2013093134A (en) * 2011-10-24 2013-05-16 Honda Motor Co Ltd Fuel cell system
CN106915235A (en) * 2017-02-28 2017-07-04 石家庄新华能源环保科技股份有限公司 A kind of efficient hydrogen source automobile dynamic system of cleaning ambient air

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US10844779B2 (en) * 2018-09-11 2020-11-24 Garrett Transportation I Inc Cooling system for e-charger assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005071830A (en) * 2003-08-26 2005-03-17 Mitsubishi Heavy Ind Ltd Hydrogen-fueled automobile
JP2006073404A (en) * 2004-09-03 2006-03-16 Toyota Motor Corp Power source cooling apparatus and vehicle loaded with it
JP2013093134A (en) * 2011-10-24 2013-05-16 Honda Motor Co Ltd Fuel cell system
CN106915235A (en) * 2017-02-28 2017-07-04 石家庄新华能源环保科技股份有限公司 A kind of efficient hydrogen source automobile dynamic system of cleaning ambient air

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