CN110030659B - Electrochemical air conditioner and control method thereof - Google Patents
Electrochemical air conditioner and control method thereof Download PDFInfo
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- CN110030659B CN110030659B CN201910233314.9A CN201910233314A CN110030659B CN 110030659 B CN110030659 B CN 110030659B CN 201910233314 A CN201910233314 A CN 201910233314A CN 110030659 B CN110030659 B CN 110030659B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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Abstract
The application relates to an electrochemical air conditioner and a control method thereof, belonging to the technical field of air conditioners. The electrochemical air conditioner comprises a heat exchange system which mainly comprises an electrochemical compressor and two metal hydride heat exchangers respectively connected with the electrochemical compressor through a hydrogen transmission pipeline; the two metal hydride heat exchangers can be controlled to exchange with each other, and one of the two metal hydride heat exchangers is periodically arranged at the outdoor side for heat exchange and the other metal hydride heat exchanger is arranged at the indoor side for heat exchange by controlling the voltage direction input into the electrochemical compressor; the control method comprises the following steps: acquiring the pipeline pressure of a hydrogen pipeline in the operation process of the electrochemical air conditioner; and starting a preset high-pressure-preventing protection strategy based on the pipeline pressure of the hydrogen conveying pipeline. The high-pressure-proof protection strategy can be timely controlled to be started when the pressure of the pipeline is too high, and the operation safety of the electrochemical air conditioner is improved.
Description
Technical Field
The application relates to the technical field of air conditioners, for example to an electrochemical air conditioner and a control method thereof.
Background
At present, the electrochemical compressor technology has been gradually applied to the technical field of air conditioners, and the principle of the electrochemical compressor is as follows: operating by pumping protons through an ion exchange membrane located between two gas diffusion electrodes, the protons driving a non-fluorine refrigerant through the ion exchange membrane; after the refrigerant reaches the other side of the membrane, it is released at high pressure into the refrigeration cycle. In the air-conditioning structure adopting the electrochemical compressor, hydrogen is mostly used as a refrigerating medium, and the metal hydride is filled in the heat exchanger, and has the characteristics of hydrogen absorption and heat release and hydrogen desorption, so that the temperature of the air flowing through is increased or reduced in the hydrogen absorption or hydrogen desorption process of the metal hydride.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
when the electrochemical air conditioner is in operation, the electrochemical compressor outputs high-temperature and high-pressure hydrogen, and when a fault occurs in the hydrogen transmission pipeline, the pressure rises suddenly, so that explosion accidents are easily caused.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
According to an aspect of an embodiment of the present disclosure, there is provided a control method of an electrochemical air conditioner.
In some optional embodiments, the electrochemical air conditioner comprises a heat exchange system mainly composed of an electrochemical compressor and two metal hydride heat exchangers respectively connected with the electrochemical compressor through a hydrogen conveying pipeline; the two metal hydride heat exchangers can be controlled to exchange with each other, and one of the two metal hydride heat exchangers is periodically arranged at the outdoor side for heat exchange and the other metal hydride heat exchanger is arranged at the indoor side for heat exchange by controlling the voltage direction input into the electrochemical compressor; the control method comprises the following steps:
acquiring the pipeline pressure of a hydrogen pipeline in the operation process of the electrochemical air conditioner;
and starting a preset high-pressure-preventing protection strategy based on the pipeline pressure of the hydrogen conveying pipeline.
In some optional embodiments, obtaining the pipeline pressure of the hydrogen transportation pipeline in the operation process of the electrochemical air conditioner comprises: acquiring the pipeline pressure of the hydrogen transmission pipeline corresponding to each of the two metal hydride heat exchangers in the same exchange period;
starting a preset high-pressure-preventing protection strategy based on the pipeline pressure of the hydrogen conveying pipeline, wherein the preset high-pressure-preventing protection strategy comprises the following steps: comparing the pipeline pressure intensities corresponding to the two metal hydride heat exchangers with preset pressure intensity threshold values respectively; if one or both of the line pressures is greater than the pressure threshold, it is determined that a preset high pressure protection strategy is enabled.
In some optional embodiments, the preset high voltage protection prevention strategy is enabled, comprising:
and controlling the two metal hydride heat exchangers to perform interchange operation and switching the direction of the voltage input into the electrochemical compressor.
In some optional embodiments, the enabling of the preset high voltage protection strategy further comprises:
and after controlling the two metal hydride heat exchangers to carry out interchange operation and switching the direction of the voltage input into the electrochemical compressor for a first set time period, controlling the electrochemical compressor to stop.
In some optional embodiments, the electrochemical air conditioner is further provided with a fan for driving the external air flow to flow through the metal hydride heat exchanger for heat exchange;
enabling the preset high voltage protection strategy further comprises: after the interchange operation and the voltage direction switching control are controlled to be performed and the voltage direction switching operation is performed for a second set time, the fan is controlled to stop; the second set duration is greater than the first set duration.
In some optional embodiments, enabling the preset anti-high voltage protection strategy further comprises:
after controlling the two metal hydride heat exchangers to carry out interchange operation and switching the voltage direction input into the electrochemical compressor to run for a third set time, controlling the electrochemical air conditioner to stop and sending preset alarm information to a user; the third set duration is greater than the second set duration.
According to another aspect of an embodiment of the present disclosure, there is provided an electrochemical air conditioner.
In some optional embodiments, the electrochemical air conditioner comprises a heat exchange system mainly composed of an electrochemical compressor and two metal hydride heat exchangers respectively connected with the electrochemical compressor through a hydrogen conveying pipeline; the two metal hydride heat exchangers can be controlled to exchange, and one of the two metal hydride heat exchangers is positioned at the outdoor side for heat exchange and the other metal hydride heat exchanger is positioned at the indoor side for heat exchange by controlling the voltage direction input into the electrochemical compressor; the electrochemical air conditioner further comprises:
the pressure obtaining module is used for obtaining the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner;
and the high-pressure protection module is used for starting a preset high-pressure prevention protection strategy based on the pipeline pressure of the hydrogen conveying pipeline.
In some optional embodiments, the pressure acquisition module is specifically configured to: acquiring the pipeline pressure of the hydrogen transmission pipeline corresponding to each of the two metal hydride heat exchangers in the same exchange period;
the high-voltage protection module is specifically used for: comparing the pipeline pressure intensities corresponding to the two metal hydride heat exchangers with preset pressure intensity threshold values respectively; if one or both of the line pressures is greater than the pressure threshold, it is determined that a preset high pressure protection strategy is enabled.
In some alternative embodiments, the high voltage protection module is specifically configured to:
and controlling the two metal hydride heat exchangers to perform interchange operation and switching the direction of the voltage input into the electrochemical compressor.
In some alternative embodiments, the high voltage protection module is further specifically configured to:
controlling the two metal hydride heat exchangers to carry out interchange operation and switching the voltage direction input into the electrochemical compressor to run for a first set time period, and then controlling the electrochemical compressor to stop; and the number of the first and second groups,
after the interchange operation and the voltage direction switching control are controlled to be performed and the voltage direction switching operation is performed for a second set time, the fan is controlled to stop; the second set time length is longer than the first set time length; and the number of the first and second groups,
after controlling the two metal hydride heat exchangers to carry out interchange operation and switching the voltage direction input into the electrochemical compressor to run for a third set time, controlling the electrochemical air conditioner to stop and sending preset alarm information to a user; the third set duration is greater than the second set duration.
Some technical solutions provided by the embodiments of the present disclosure can achieve the following technical effects:
according to the method and the device, the preset high-pressure-preventing protection strategy is controlled to be started by acquiring the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner, the high-pressure-preventing protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic structural diagram of an electrochemical air conditioner provided in an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a control method of an electrochemical air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an electrochemical air conditioner provided in an embodiment of the present disclosure.
Reference numerals:
1. electrochemical air conditioning; 11. a pressure intensity obtaining module; 12. a high voltage protection module; 20. an electrochemical compressor; 21. a first metal hydride heat exchanger; 22. a second metal hydride heat exchanger; 31. a first hydrogen delivery line; 32. a second hydrogen delivery line; 41. a first fan; 42. second fan
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
In the embodiment of the disclosure, the preset high-pressure-prevention protection strategy is controlled to be started by acquiring the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner 1, so that the high-pressure-prevention protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
Fig. 1 is a schematic structural diagram of an electrochemical air conditioner 1 provided in an embodiment of the present disclosure. As shown in fig. 1, the electrochemical air conditioner 1 includes: the heat exchange system mainly comprises an electrochemical compressor 20 and two metal hydride heat exchangers respectively connected with the electrochemical compressor 20 through a hydrogen transmission pipeline; the two metal hydride heat exchangers are controllably interchanged by controlling the direction of the voltage input to the electrochemical compressor 20 so that one of the two heat exchangers is on the outdoor side for heat exchange and the other is on the indoor side for heat exchange.
The two metal hydride heat exchangers include a first metal hydride heat exchanger 21 connected to the first port of the electrochemical compressor 20 through a first hydrogen transmission pipeline 31, and a second metal hydride heat exchanger 22 connected to the second port of the electrochemical compressor 20 through a second hydrogen transmission pipeline 32, and each metal hydride heat exchanger is filled with a metal hydride capable of absorbing/releasing hydrogen.
The electrochemical compressor 20 is connected to a power supply, the power supply can switch to apply a voltage in an opposite direction to the electrochemical compressor 20, when the power supply applies a voltage in a first direction to the electrochemical compressor 20, the electrochemical compressor 20 can drive hydrogen inside the electrochemical compressor to ionize and move in the electrolyte along the direction from the first port to the second port, at this time, the first metal hydride heat exchanger 21 is in a hydrogen releasing and heat absorbing state and can serve as an evaporator, and the second metal hydride heat exchanger 22 is in a hydrogen absorbing and heat releasing state and can serve as a condenser; when the power supply applies a voltage in a second direction to the electrochemical compressor 20, the electrochemical compressor 20 can drive the hydrogen gas to move in the electrolyte along the second port toward the first port in an ionized manner, and at this time, the first metal hydride heat exchanger 21 is in a hydrogen absorption and heat release state and can serve as a condenser, and the second metal hydride heat exchanger 22 is in a hydrogen desorption and heat absorption state and can serve as an evaporator.
Here, the voltage in the first direction may be a voltage in an arbitrary direction, and the voltage in the second direction may be a voltage in a direction opposite to the voltage in the first direction.
By switching the direction of the voltage applied to the electrochemical compressor 20 by the power supply, the flow direction of the hydrogen gas in the hydrogen gas flow path formed by the electrochemical compressor 20 and the two metal hydride heat exchangers can be switched, thereby respectively realizing the heat absorption and heat release functions of the two metal hydride heat exchangers.
The heat exchange system of the electrochemical air conditioner 1 may be an air cooling heat exchange system, and the first fan 41 and the second fan 42 suck indoor air into the air duct, and then blow the air out of the indoor air outlet or the outdoor air outlet through the electromagnetic valve, so as to realize continuous cooling or continuous heating.
In the hydrogen flowing process, the pipeline through which hydrogen flows, the electrochemical compressor 20 and the two metal hydride heat exchangers are used for judging whether hydrogen leakage occurs or not and for responding to the hydrogen leakage, and the control method becomes the key point of the control method of the electrochemical air conditioner 1.
Fig. 2 is a flowchart of a control method of the electrochemical air conditioner 1 according to an embodiment of the present disclosure. As shown in fig. 2, the method for controlling the electrochemical air conditioner 1 includes:
s1, acquiring the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner 1;
in the embodiment of the present disclosure, pressure detection devices may be respectively disposed in the hydrogen transportation pipeline connected to the electrochemical compressor 20, so that in the operation process of the electrochemical air conditioner 1, pressure data of unit area in the hydrogen transportation pipeline is obtained, and the pipeline pressure of the hydrogen transportation pipeline in the operation process of the electrochemical air conditioner 1 can be obtained.
Alternatively, pressure sensors may be respectively disposed in the hydrogen transportation pipelines connected to the electrochemical compressor 20, and in the operation process of the electrochemical air conditioner 1, pressure data in the hydrogen transportation pipelines, that is, the pipeline pressure of the hydrogen transportation pipelines in the operation process of the electrochemical air conditioner 1, may be obtained.
Alternatively, the pressure detection devices may be respectively disposed in the first hydrogen transportation pipeline 31 and the second hydrogen transportation pipeline 32, or the pressure detection devices may be respectively disposed at two or more positions in one of the hydrogen transportation pipelines to obtain pressure data per unit area of the two or more positions in one hydrogen transportation pipeline.
Alternatively, the type of pressure detection device includes, but is not limited to, a pressure sensor that can obtain the pressure applied to the location by the gaseous or liquid flow-through substance at the location where the pressure sensor is disposed, and obtain the sum of the pressures applied to the unit area of the pipe, that is, the pipe pressure at the location.
Here, the hydrogen transportation pipeline may refer to an inner wall of the hydrogen transportation pipeline, so that the pipeline pressure of the hydrogen transportation pipeline may be pressure data per unit area of the inner wall of the hydrogen transportation pipeline.
And S2, starting a preset high-pressure-preventing protection strategy based on the pipeline pressure of the hydrogen conveying pipeline.
Optionally, according to the obtained pipeline pressure of the hydrogen transportation pipeline, comparing the pipeline pressure of the hydrogen transportation pipeline with a pressure threshold value enabled by a preset high-pressure prevention protection strategy, and if the obtained pipeline pressure of the hydrogen transportation pipeline is less than or equal to the pressure threshold value enabled by the preset high-pressure prevention protection strategy, continuing normal operation of the electrochemical air conditioner 1 without enabling the preset high-pressure prevention protection strategy; and if the obtained pipeline pressure of the hydrogen transmission pipeline is greater than the pressure threshold value of the starting of the preset high-pressure prevention protection strategy, starting the preset high-pressure prevention protection strategy.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some optional embodiments, obtaining the pipeline pressure of the hydrogen transportation pipeline in the operation process of the electrochemical air conditioner 1 includes: acquiring the pipeline pressure of the hydrogen transmission pipeline corresponding to each of the two metal hydride heat exchangers in the same exchange period;
starting a preset high-pressure-preventing protection strategy based on the pipeline pressure of the hydrogen conveying pipeline, wherein the preset high-pressure-preventing protection strategy comprises the following steps: comparing the pipeline pressure intensities corresponding to the two metal hydride heat exchangers with preset pressure intensity threshold values respectively; if one or both of the line pressures is greater than the pressure threshold, it is determined that a preset high pressure protection strategy is enabled.
Among them, pressure detecting means may be provided in the first hydrogen delivery pipe 31 and the second hydrogen delivery pipe 32, respectively, the pressure detecting means provided in the first hydrogen delivery pipe 31 may be the first pressure detecting means, and the pressure detecting means provided in the second hydrogen delivery pipe 32 may be the second pressure detecting means.
Alternatively, the sum of the pressures detected at the position in the unit area at the position where the first pressure detection device is arranged is obtained and can be the first pipeline pressure; the sum of the pressures detected at the position in the unit area at which the second pressure detection means is provided may be the second pipe pressure.
Here, the preset pressure threshold may be used to characterize a pressure threshold value at which the high pressure protection strategy is enabled.
Optionally, the first and second pipe pressures are compared with a preset pressure threshold, and if the first or second pipe pressures are greater than the preset pressure threshold, it may be determined that a preset high pressure prevention protection strategy is enabled.
Optionally, the first pipe pressure and the second pipe pressure are compared with a preset pressure threshold, and if both the first pipe pressure and the second pipe pressure are greater than the preset pressure threshold, it may be determined that a preset high pressure protection strategy is enabled.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some optional embodiments, the preset high voltage protection prevention strategy is enabled, comprising:
the two metal hydride heat exchangers are controlled to operate interchangeably and to switch the direction of the voltage input to the electrochemical compressor 20.
In the structure of the electrochemical air conditioner 1 in the embodiment of the present disclosure, the electrochemical compressor 20 and the two metal hydride heat exchangers form a closed hydrogen flow path, the electrochemical compressor 20 is driven by electricity to drive hydrogen to flow from the first metal hydride heat exchanger 21 to the second metal hydride heat exchanger 22, or drive hydrogen to flow from the second metal hydride heat exchanger 22 to the first metal hydride heat exchanger 21, so that when the metal hydrides of the metal hydride heat exchangers are in a stable hydrogen absorption and heat release state or a hydrogen desorption and heat absorption state, the flow pressure of hydrogen in the electrochemical compressor 20 is generally stable within a certain range of values, and therefore, the pressure applied to the unit areas of the first hydrogen delivery pipeline 31 and the second hydrogen delivery pipeline 32 is generally stable within a certain range of values, if the first pressure or the second pipeline pressure deviates from the general range of values of the hydrogen delivery pipeline pressure, the above-mentioned numerical range in which the pressure of the hydrogen transportation pipeline is generally stabilized may be used as a preset pressure threshold, if the obtained first pipeline pressure or the second pipeline pressure is compared with the preset pressure threshold, and the first pipeline pressure or the second pipeline pressure is greater than the preset pressure threshold, it indicates that the pressure in the hydrogen transportation pipeline is too high, and may control to activate the preset high pressure prevention protection strategy, conversely, if both the obtained first pipeline pressure and the obtained second pipeline pressure are less than or equal to the preset pressure threshold, it indicates that the pressure in the hydrogen transportation pipeline is normal, and it is not necessary to control to activate the preset high pressure prevention protection strategy, and may continue to normally operate the electrochemical air conditioner 1, and continue to detect the pipeline pressures of the first hydrogen transportation pipeline 31 and the second hydrogen transportation pipeline 32.
Alternatively, if the obtained first or second pipeline pressure is greater than the preset pressure threshold, the two metal hydride heat exchangers can be controlled to perform the interchange operation and switch the direction of the voltage input to the electrochemical compressor 20.
Here, the direction of the voltage input to the electrochemical compressor 20 is switched, and the direction of the flow of hydrogen gas in the hydrogen gas flow path formed by the electrochemical compressor 20 and the two metal hydride heat exchangers can be switched, so that the metal hydride heat exchanger in the original hydrogen absorption and heat release state is changed to the hydrogen release and heat absorption state, and similarly, the metal hydride heat exchanger in the original hydrogen release and heat absorption state is changed to the hydrogen absorption and heat release state.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some optional embodiments, the enabling of the preset high voltage protection strategy further comprises:
the electrochemical compressor 20 is controlled to stop after controlling the two metal hydride heat exchangers to operate interchangeably and switching the direction of the voltage input to the electrochemical compressor 20 for a first set period of time.
Optionally, the starting of the preset high-pressure-relief protection strategy includes, because it is detected that the pipeline pressure corresponding to the metal hydride heat exchanger is greater than the preset pressure threshold, at this time, the pipeline pressure is too high, which may be caused by too high exhaust pressure at one side of the electrochemical compressor 20, controlling the two metal hydride heat exchangers to perform the interchange operation and switching the voltage direction input to the electrochemical compressor 20, and controlling the electrochemical compressor 20 to stop when the operation time reaches the first set time period.
Here, the two metal hydride heat exchangers are controlled to perform the interchange operation and switch the voltage direction input to the electrochemical compressor 20, in order to change the metal hydride heat exchanger in the original hydrogen discharging and heat absorbing state to the metal hydride heat exchanger in the hydrogen absorbing and heat releasing state, the operation is performed for a first set time period, so that the original excessive pressure is reduced by a little after the first set time period, and the electrochemical compressor 20 is controlled to stop.
The first set time period may be 0.5 to 2 minutes, for example, the metal hydride heat exchanger in the original hydrogen releasing and heat absorbing state is changed into the metal hydride heat exchanger in the hydrogen absorbing and heat releasing state, and the electrochemical compressor 20 may be controlled to stop when the excessive pressure is reduced from the original pressure after 1 minute of operation.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some alternative embodiments, the electrochemical air conditioner 1 is further provided with a fan for driving the external air flow to flow through the metal hydride heat exchanger for heat exchange;
in the embodiment of the present disclosure, the electrochemical air conditioner 1 is further provided with a fan, wherein the fan accelerates the gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates the gas to change the flow direction of the gas, so that the kinetic energy is converted into the potential energy, and the fan is used for driving external air flow to flow through the metal hydride heat exchanger to perform heat exchange.
Enabling the preset high voltage protection strategy further comprises: after the interchange operation and the voltage direction switching control are controlled to be performed and the voltage direction switching operation is performed for a second set time, the fan is controlled to stop; the second set duration is greater than the first set duration.
Here, since the second set time period is longer than the first set time period, it is explained that the blower is controlled to stop after controlling the two metal hydride heat exchangers to perform the interchange operation and switching the direction of the voltage input to the electrochemical compressor 20 to operate, and optionally, after controlling the electrochemical compressor 20 to stop.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some optional embodiments, enabling the preset anti-high voltage protection strategy further comprises:
after controlling the two metal hydride heat exchangers to perform interchange operation and switching the voltage direction input to the electrochemical compressor 20 to run for a third set time, controlling the electrochemical air conditioner 1 to stop and sending preset alarm information to a user; the third set duration is greater than the second set duration.
Here, the preset alarm information includes, but is not limited to, sending a voice alarm prompt to a user, prompting the user that the pressure of the pipeline of the electrochemical air conditioner 1 is too high, enabling the preset high-pressure prevention protection strategy, and not turning on the stopped electrochemical air conditioner 1 again before the high-pressure prevention protection strategy is completed, so as to prevent the electrochemical compressor 20 and the pipeline from being irreversibly damaged due to the continuous too high pressure of the pipeline, and also reduce the possibility of safety accidents caused by the high pressure of the electrochemical compressor 20 and the pipeline.
The control method provided by the embodiment of the disclosure further includes: and controlling the electrochemical air conditioner 1 to stop and sending preset alarm information to a user. The preset alarm information sent to the user can be a control alarm lamp which flashes to prompt the user that the pipeline pressure of the electrochemical air conditioner 1 is too high, a preset high-voltage prevention protection strategy is started and cannot be used, and the stopped electrochemical air conditioner 1 is not required to be started again before the high-voltage prevention protection strategy is completed, so that unnecessary danger is avoided.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
Fig. 3 is a schematic structural diagram of an electrochemical air conditioner 1 according to an embodiment of the present disclosure. As shown in fig. 3, the electrochemical air conditioner 1 further includes:
the pressure obtaining module 11 is used for obtaining the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner 1;
and the high-pressure protection module 12 is used for starting a preset high-pressure prevention protection strategy based on the pipeline pressure of the hydrogen conveying pipeline.
In the embodiment of the present disclosure, pressure detection devices may be respectively disposed in the hydrogen transportation pipeline connected to the electrochemical compressor 20, so that in the operation process of the electrochemical air conditioner 1, pressure data of unit area in the hydrogen transportation pipeline is obtained, and the pipeline pressure of the hydrogen transportation pipeline in the operation process of the electrochemical air conditioner 1 can be obtained.
Alternatively, pressure sensors may be respectively disposed in the hydrogen transportation pipelines connected to the electrochemical compressor 20, and in the operation process of the electrochemical air conditioner 1, pressure data in the hydrogen transportation pipelines, that is, the pipeline pressure of the hydrogen transportation pipelines in the operation process of the electrochemical air conditioner 1, may be obtained.
Alternatively, the pressure detection devices may be respectively disposed in the first hydrogen transportation pipeline 31 and the second hydrogen transportation pipeline 32, or the pressure detection devices may be respectively disposed at two or more positions in one of the hydrogen transportation pipelines to obtain pressure data per unit area of the two or more positions in one hydrogen transportation pipeline.
Alternatively, the type of pressure detection device includes, but is not limited to, a pressure sensor that can obtain the pressure applied to the location by the gaseous or liquid flow-through substance at the location where the pressure sensor is disposed, and obtain the sum of the pressures applied to the unit area of the pipe, that is, the pipe pressure at the location.
Here, the hydrogen transportation pipeline may refer to an inner wall of the hydrogen transportation pipeline, so that the pipeline pressure of the hydrogen transportation pipeline may be pressure data per unit area of the inner wall of the hydrogen transportation pipeline.
Optionally, according to the obtained pipeline pressure of the hydrogen transportation pipeline, comparing the pipeline pressure of the hydrogen transportation pipeline with a pressure threshold value enabled by a preset high-pressure prevention protection strategy, and if the obtained pipeline pressure of the hydrogen transportation pipeline is less than or equal to the pressure threshold value enabled by the preset high-pressure prevention protection strategy, continuing normal operation of the electrochemical air conditioner 1 without enabling the preset high-pressure prevention protection strategy; and if the obtained pipeline pressure of the hydrogen transmission pipeline is greater than the pressure threshold value of the starting of the preset high-pressure prevention protection strategy, starting the preset high-pressure prevention protection strategy.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some alternative embodiments, the pressure obtaining module 11 is specifically configured to: acquiring the pipeline pressure of the hydrogen transmission pipeline corresponding to each of the two metal hydride heat exchangers in the same exchange period;
the high voltage protection module 12 is specifically configured to: comparing the pipeline pressure intensities corresponding to the two metal hydride heat exchangers with preset pressure intensity threshold values respectively; if one or both of the line pressures is greater than the pressure threshold, it is determined that a preset high pressure protection strategy is enabled.
Among them, pressure detecting means may be provided in the first hydrogen delivery pipe 31 and the second hydrogen delivery pipe 32, respectively, the pressure detecting means provided in the first hydrogen delivery pipe 31 may be the first pressure detecting means, and the pressure detecting means provided in the second hydrogen delivery pipe 32 may be the second pressure detecting means.
Alternatively, the sum of the pressures detected at the position in the unit area at the position where the first pressure detection device is arranged is obtained and can be the first pipeline pressure; the sum of the pressures detected at the position in the unit area at which the second pressure detection means is provided may be the second pipe pressure.
Here, the preset pressure threshold may be used to characterize a pressure threshold value at which the high pressure protection strategy is enabled.
Optionally, the first and second pipe pressures are compared with a preset pressure threshold, and if the first or second pipe pressures are greater than the preset pressure threshold, it may be determined that a preset high pressure prevention protection strategy is enabled.
Optionally, the first pipe pressure and the second pipe pressure are compared with a preset pressure threshold, and if both the first pipe pressure and the second pipe pressure are greater than the preset pressure threshold, it may be determined that a preset high pressure protection strategy is enabled.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some alternative embodiments, the high voltage protection module 12 is specifically configured to:
the two metal hydride heat exchangers are controlled to operate interchangeably and to switch the direction of the voltage input to the electrochemical compressor 20.
In the structure of the electrochemical air conditioner 1 in the embodiment of the present disclosure, the electrochemical compressor 20 and the two metal hydride heat exchangers form a closed hydrogen flow path, the electrochemical compressor 20 is driven by electricity to drive hydrogen to flow from the first metal hydride heat exchanger 21 to the second metal hydride heat exchanger 22, or drive hydrogen to flow from the second metal hydride heat exchanger 22 to the first metal hydride heat exchanger 21, so that when the metal hydrides of the metal hydride heat exchangers are in a stable hydrogen absorption and heat release state or a hydrogen desorption and heat absorption state, the flow pressure of hydrogen in the electrochemical compressor 20 is generally stable within a certain range of values, and therefore, the pressure applied to the unit areas of the first hydrogen delivery pipeline 31 and the second hydrogen delivery pipeline 32 is generally stable within a certain range of values, if the first pressure or the second pipeline pressure deviates from the general range of values of the hydrogen delivery pipeline pressure, the above-mentioned numerical range in which the pressure of the hydrogen transportation pipeline is generally stabilized may be used as a preset pressure threshold, if the obtained first pipeline pressure or the second pipeline pressure is compared with the preset pressure threshold, and the first pipeline pressure or the second pipeline pressure is greater than the preset pressure threshold, it indicates that the pressure in the hydrogen transportation pipeline is too high, and may control to activate the preset high pressure prevention protection strategy, conversely, if both the obtained first pipeline pressure and the obtained second pipeline pressure are less than or equal to the preset pressure threshold, it indicates that the pressure in the hydrogen transportation pipeline is normal, and it is not necessary to control to activate the preset high pressure prevention protection strategy, and may continue to normally operate the electrochemical air conditioner 1, and continue to detect the pipeline pressures of the first hydrogen transportation pipeline 31 and the second hydrogen transportation pipeline 32.
Alternatively, if the obtained first or second pipeline pressure is greater than the preset pressure threshold, the two metal hydride heat exchangers can be controlled to perform the interchange operation and switch the direction of the voltage input to the electrochemical compressor 20.
Here, the direction of the voltage input to the electrochemical compressor 20 is switched, and the direction of the flow of hydrogen gas in the hydrogen gas flow path formed by the electrochemical compressor 20 and the two metal hydride heat exchangers can be switched, so that the metal hydride heat exchanger in the original hydrogen absorption and heat release state is changed to the hydrogen release and heat absorption state, and similarly, the metal hydride heat exchanger in the original hydrogen release and heat absorption state is changed to the hydrogen absorption and heat release state.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some alternative embodiments, the high voltage protection module 12 is further specifically configured to:
after controlling the two metal hydride heat exchangers to operate interchangeably and switching the direction of the voltage input to the electrochemical compressor 20 for a first set period of time, the electrochemical compressor 20 is controlled to stop.
Optionally, the starting of the preset high-pressure-relief protection strategy includes, because it is detected that the pipeline pressure corresponding to the metal hydride heat exchanger is greater than the preset pressure threshold, at this time, the pipeline pressure is too high, which may be caused by too high exhaust pressure at one side of the electrochemical compressor 20, controlling the two metal hydride heat exchangers to perform the interchange operation and switching the voltage direction input to the electrochemical compressor 20, and controlling the electrochemical compressor 20 to stop when the operation time reaches the first set time period.
Here, the two metal hydride heat exchangers are controlled to perform the interchange operation and switch the voltage direction input to the electrochemical compressor 20, in order to change the metal hydride heat exchanger in the original hydrogen discharging and heat absorbing state to the metal hydride heat exchanger in the hydrogen absorbing and heat releasing state, the operation is performed for a first set time period, so that the original excessive pressure is reduced by a little after the first set time period, and the electrochemical compressor 20 is controlled to stop.
The first set time period may be 0.5 to 2 minutes, for example, the metal hydride heat exchanger in the original hydrogen releasing and heat absorbing state is changed into the metal hydride heat exchanger in the hydrogen absorbing and heat releasing state, and the electrochemical compressor 20 may be controlled to stop when the excessive pressure is reduced from the original pressure after 1 minute of operation.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some alternative embodiments, the electrochemical air conditioner 1 is further provided with a fan for driving the external air flow to flow through the metal hydride heat exchanger for heat exchange;
in the embodiment of the present disclosure, the electrochemical air conditioner 1 is further provided with a fan, wherein the fan accelerates the gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates the gas to change the flow direction of the gas, so that the kinetic energy is converted into the potential energy, and the fan is used for driving external air flow to flow through the metal hydride heat exchanger to perform heat exchange.
The high voltage protection module 12 is further specifically configured to:
enabling the preset high voltage protection strategy further comprises: after the interchange operation and the voltage direction switching control are controlled to be performed and the voltage direction switching operation is performed for a second set time, the fan is controlled to stop; the second set duration is greater than the first set duration.
Here, since the second set time period is longer than the first set time period, it is explained that the blower is controlled to stop after controlling the two metal hydride heat exchangers to perform the interchange operation and switching the direction of the voltage input to the electrochemical compressor 20 to operate, and optionally, after controlling the electrochemical compressor 20 to stop.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
In some alternative embodiments, the high voltage protection module 12 is further specifically configured to:
after controlling the two metal hydride heat exchangers to perform interchange operation and switching the voltage direction input to the electrochemical compressor 20 to run for a third set time, controlling the electrochemical air conditioner 1 to stop and sending preset alarm information to a user; the third set duration is greater than the second set duration.
Here, the preset alarm information includes, but is not limited to, sending a voice alarm prompt to a user, prompting the user that the pressure of the pipeline of the electrochemical air conditioner 1 is too high, enabling the preset high-pressure prevention protection strategy, and not turning on the stopped electrochemical air conditioner 1 again before the high-pressure prevention protection strategy is completed, so as to prevent the electrochemical compressor 20 and the pipeline from being irreversibly damaged due to the continuous too high pressure of the pipeline, and also reduce the possibility of safety accidents caused by the high pressure of the electrochemical compressor 20 and the pipeline.
The control method provided by the embodiment of the disclosure further includes: and controlling the electrochemical air conditioner 1 to stop and sending preset alarm information to a user. The preset alarm information sent to the user can be a control alarm lamp which flashes to prompt the user that the pipeline pressure of the electrochemical air conditioner 1 is too high, a preset high-voltage prevention protection strategy is started and cannot be used, and the stopped electrochemical air conditioner 1 is not required to be started again before the high-voltage prevention protection strategy is completed, so that unnecessary danger is avoided.
According to the embodiment of the disclosure, the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner is obtained, the preset high-pressure-proof protection strategy is controlled to be started, the high-pressure-proof protection strategy can be timely controlled to be started when the pipeline pressure is too high, and the operation safety of the electrochemical air conditioner is improved.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (6)
1. The control method of the electrochemical air conditioner is characterized in that the electrochemical air conditioner comprises a heat exchange system which mainly comprises an electrochemical compressor and two metal hydride heat exchangers respectively connected with the electrochemical compressor through a hydrogen conveying pipeline; the two metal hydride heat exchangers can be controlled to be interchanged, and one of the two metal hydride heat exchangers is periodically arranged at the outdoor side for heat exchange and the other metal hydride heat exchanger is arranged at the indoor side for heat exchange by controlling the voltage direction input to the electrochemical compressor; the electrochemical air conditioner is also provided with a fan which is used for driving external airflow to flow through the metal hydride heat exchanger for heat exchange; the control method comprises the following steps:
acquiring the pipeline pressure of a hydrogen pipeline in the operation process of the electrochemical air conditioner;
starting a preset high-pressure-preventing protection strategy based on the pipeline pressure of the hydrogen transmission pipeline;
the starting of the preset high-voltage protection strategy comprises the following steps:
controlling the two metal hydride heat exchangers to carry out interchange operation and switching the voltage direction input into the electrochemical compressor;
controlling the electrochemical compressor to stop after controlling the two metal hydride heat exchangers to carry out interchange operation and switching the voltage direction input into the electrochemical compressor to run for a first set time;
after the interchanging operation and the voltage direction switching control are controlled to interchange and the voltage direction switching operation is carried out for a second set time, the fan is controlled to stop; the second set duration is greater than the first set duration.
2. The control method according to claim 1,
the acquiring of the pipeline pressure of the hydrogen transmission pipeline in the operation process of the electrochemical air conditioner comprises the following steps: acquiring the pipeline pressure of the hydrogen transmission pipeline corresponding to each of the two metal hydride heat exchangers in the same exchange period;
the starting of a preset high-pressure-prevention protection strategy based on the pipeline pressure of the hydrogen transmission pipeline comprises the following steps: comparing the pipeline pressure intensities corresponding to the two metal hydride heat exchangers with preset pressure intensity threshold values respectively; and determining to enable a preset high pressure prevention protection strategy if one or both of the pipe pressures is greater than the pressure threshold.
3. The control method according to claim 1 or 2, wherein said enabling a preset anti-high voltage protection strategy further comprises:
after the two metal hydride heat exchangers are controlled to carry out interchange operation and the voltage direction input to the electrochemical compressor is switched to run for a third set time, the electrochemical air conditioner is controlled to stop, and preset alarm information is sent to a user; the third set duration is greater than the second set duration.
4. An electrochemical air conditioner is characterized by comprising a heat exchange system, a heat exchanger and a heat exchanger, wherein the heat exchange system mainly comprises an electrochemical compressor and two metal hydride heat exchangers which are respectively connected with the electrochemical compressor through a hydrogen conveying pipeline; the two metal hydride heat exchangers can be controlled to be interchanged, and one of the two metal hydride heat exchangers is periodically arranged at the outdoor side for heat exchange and the other metal hydride heat exchanger is arranged at the indoor side for heat exchange by controlling the voltage direction input to the electrochemical compressor; the electrochemical air conditioner is also provided with a fan which is used for driving external airflow to flow through the metal hydride heat exchanger for heat exchange; the electrochemical air conditioner further comprises:
the pressure obtaining module is used for obtaining the pipeline pressure of the hydrogen pipeline in the operation process of the electrochemical air conditioner;
the high-pressure protection module is used for starting a preset high-pressure prevention protection strategy based on the pipeline pressure of the hydrogen transmission pipeline;
the high-voltage protection module is specifically used for:
controlling the two metal hydride heat exchangers to carry out interchange operation and switching the voltage direction input into the electrochemical compressor;
controlling the electrochemical compressor to stop after controlling the two metal hydride heat exchangers to carry out interchange operation and switching the voltage direction input into the electrochemical compressor to run for a first set time; and the number of the first and second groups,
after the interchanging operation and the voltage direction switching control are controlled to interchange and the voltage direction switching operation is carried out for a second set time, the fan is controlled to stop; the second set duration is greater than the first set duration.
5. Electrochemical air conditioner according to claim 4,
the pressure obtaining module is specifically configured to: acquiring the pipeline pressure of the hydrogen transmission pipeline corresponding to each of the two metal hydride heat exchangers in the same exchange period;
the high-voltage protection module is specifically used for: comparing the pipeline pressure intensities corresponding to the two metal hydride heat exchangers with preset pressure intensity threshold values respectively; and determining to enable a preset high pressure prevention protection strategy if one or both of the pipe pressures is greater than the pressure threshold.
6. The electrochemical air conditioner according to claim 4 or 5, wherein the high voltage protection module is further configured to:
after the two metal hydride heat exchangers are controlled to carry out interchange operation and the voltage direction input to the electrochemical compressor is switched to run for a third set time, the electrochemical air conditioner is controlled to stop, and preset alarm information is sent to a user; the third set duration is greater than the second set duration.
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| NL7601906A (en) * | 1976-02-25 | 1977-08-29 | Philips Nv | CYCLIC DESORPTION COOLING MACHINE RESP. - HEAT PUMP. |
| JPH0810094B2 (en) * | 1987-08-28 | 1996-01-31 | 北海道電力株式会社 | Method for controlling heat pump using metal hydride |
| JP2766041B2 (en) * | 1990-04-24 | 1998-06-18 | 三洋電機株式会社 | Heat pump equipment |
| JPH0771838A (en) * | 1993-08-31 | 1995-03-17 | Sanyo Electric Co Ltd | Cold generating device using metallic hydride |
| JPH09324960A (en) * | 1996-06-05 | 1997-12-16 | Japan Steel Works Ltd:The | Heat generating or heat absorbing method and apparatus using hydrogen storing alloy |
| CN1532476A (en) * | 2003-03-25 | 2004-09-29 | 乐金电子(天津)电器有限公司 | Air conditioning cooling and heating device with hydrogen storage alloy and its control method |
| CN100343601C (en) * | 2003-05-13 | 2007-10-17 | 乐金电子(天津)电器有限公司 | Safety valve used for air conditioner through hydrogen moving to condition air |
| WO2014115555A1 (en) * | 2013-01-24 | 2014-07-31 | パナソニック株式会社 | Heat pump device |
| US10605496B2 (en) * | 2015-02-16 | 2020-03-31 | Thermax Limited | Air changeover system for metal hydride heat pump |
| CN106288071A (en) * | 2016-07-21 | 2017-01-04 | 青岛海尔空调器有限总公司 | Electrochemistry air conditioning system |
| CN107782009A (en) * | 2016-08-25 | 2018-03-09 | 青岛海尔智能技术研发有限公司 | Metal hydride refrigeration system and its control method |
| CN107782011A (en) * | 2016-08-25 | 2018-03-09 | 青岛海尔智能技术研发有限公司 | Metal hydride refrigeration system and its control method |
| CN107975964A (en) * | 2016-10-21 | 2018-05-01 | 青岛海尔智能技术研发有限公司 | Metal hydride refrigeration system and its control method |
| CN108344081B (en) * | 2017-01-24 | 2021-01-29 | 青岛海尔空调器有限总公司 | Air conditioner and safety detection method |
| CN108507064A (en) * | 2017-02-27 | 2018-09-07 | 青岛海尔智能技术研发有限公司 | Electrochemistry air-conditioning system and its control method |
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