CN115523169A - Fan control method and device of energy storage device and charging pile - Google Patents

Fan control method and device of energy storage device and charging pile Download PDF

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Publication number
CN115523169A
CN115523169A CN202211297384.9A CN202211297384A CN115523169A CN 115523169 A CN115523169 A CN 115523169A CN 202211297384 A CN202211297384 A CN 202211297384A CN 115523169 A CN115523169 A CN 115523169A
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China
Prior art keywords
fan
energy storage
rotating speed
fans
storage device
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Withdrawn
Application number
CN202211297384.9A
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Chinese (zh)
Inventor
王小凤
段苏楠
王景
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Ainuowei Suzhou New Energy Technology Co ltd
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Ainuowei Suzhou New Energy Technology Co ltd
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Priority to CN202211297384.9A priority Critical patent/CN115523169A/en
Publication of CN115523169A publication Critical patent/CN115523169A/en
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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
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/066—Cooling by ventilation
    • 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
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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
    • 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
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • 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
    • F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

The application provides a fan control method and device of an energy storage device and a charging pile, wherein the energy storage device comprises a compressor and a plurality of fans, the compressor and the fans are used for cooling a heating device of the energy storage device, and the method comprises the following steps: under the condition that the energy storage device is in a cooling mode, acquiring the exhaust pressure of a compressor, wherein the cooling mode is a working mode that the compressor and a fan cool a heating device of the energy storage device; under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, the rotating speed of the started fan is controlled to be smaller than a first preset rotating speed, the first preset rotating speed is the maximum rotating speed of the minimum gear of the fan, noise is greatly reduced, and the problem that noise emitted by the fan of the energy storage device disturbs residents in the prior art is solved.

Description

Fan control method and device of energy storage device and charging pile
Technical Field
The application relates to the technical field of fan noise control, in particular to a fan control method and device of an energy storage device, a computer readable storage medium and a charging pile.
Background
In the traditional energy storage project, the liquid cooling refrigeration scheme that mainly relates to many packs uses the scene more singleness (open air), and the trough can be mended, and the crest repays the electric wire netting. Liquid cooling refrigeration also only depends on large-scale water-cooled generator to refrigerate for the battery package, because the application scene problem, only considers refrigeration power basically, does not do extra restriction to the noise, therefore traditional outdoor energy storage is mostly a fixed frequency refrigeration, and the fan is also fixed duty ratio control. The utility model provides a portable energy storage fills electric pile liquid cooling scheme, concrete project application is a quick energy storage fills electric pile, fills electric pile high-power to the car output when the energy storage and charges, and power module and battery heating value temperature rise are great this moment, need give power module and battery pack liquid cooling refrigeration, because of filling electric pile and having the district demand of getting into and also need operate at the trade center simultaneously, so require stringently to the noise of complete machine, otherwise can cause noise pollution, disturbing the citizen.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The application mainly aims to provide a fan control method and device of an energy storage device, a computer readable storage medium and a charging pile, so as to solve the problem that noise emitted by a fan of the energy storage device disturbs residents in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a fan control method for an energy storage device, the energy storage device including a compressor and a plurality of fans, the compressor and the fans being used to cool heat generating devices of the energy storage device, the method including: under the condition that the energy storage device is in a cooling mode, acquiring the exhaust pressure of the compressor, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device; and under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, controlling the rotation speed of the started fan to be smaller than a first preset rotation speed, wherein the first preset rotation speed is the maximum rotation speed of the minimum gear of the fan.
Optionally, in a case where at least one of the fans is not turned on or the exhaust pressure is less than a first pressure threshold, controlling the rotation speed of the fan that is turned on to be less than a first predetermined rotation speed includes: when the exhaust pressure is greater than a second pressure threshold and less than a third pressure threshold, the rotating speed of the turned-on fan is adjusted according to the exhaust pressure, so that the exhaust pressure and the rotating speed are in positive correlation, the rotating speed is greater than or equal to a second preset rotating speed and less than or equal to the first preset rotating speed, the second preset rotating speed is less than the first preset rotating speed, the second pressure threshold is less than the third pressure threshold, and the third pressure threshold is less than the first pressure threshold.
Optionally, after adjusting the rotation speed of the turned-on fan according to the exhaust pressure, the method further comprises: under the condition that at least two fans operate at the second preset rotating speed for a first preset time or the exhaust pressure is smaller than a fourth pressure threshold value, controlling one opened fan to be closed and controlling the remaining opened fans to operate at the first preset rotating speed for a second preset time, wherein the fourth pressure threshold value is smaller than the second pressure threshold value; adjusting the rotation speed of the turned-on fan according to the exhaust pressure.
Optionally, the number of the fans is N +1, and after the rotating speed of the fan which is turned on is adjusted according to the exhaust pressure, the method further includes: under the condition that at most N fans operate at the first preset rotating speed for a first preset time or the exhaust pressure is greater than a first pressure threshold value, controlling one closed fan to be opened and controlling all opened fans to operate at the second preset rotating speed for a third preset time; adjusting the rotation speed of the turned-on fan according to the exhaust pressure.
Optionally, after obtaining a discharge pressure of the compressor, the method further comprises: controlling the rotating speed of the started fan to be adjusted to a third preset rotating speed under the condition that a first preset condition and a second preset condition are both met, wherein the first preset condition is that all the fans are started, the second preset condition is that the exhaust pressure is greater than or equal to a first pressure threshold and smaller than a fifth pressure threshold, the fifth pressure threshold is greater than the first pressure threshold, and the third preset rotating speed is greater than the first preset rotating speed; and under the condition that a first preset condition and a third preset condition are both met, the rotating speed of the fan which is controlled to be started is adjusted to a fourth preset rotating speed, the third preset condition is that the exhaust pressure is greater than or equal to a fifth pressure threshold value, and the fourth preset rotating speed is greater than the third preset rotating speed.
Optionally, before obtaining the discharge pressure of the compressor, the method further comprises: acquiring an ambient temperature; and determining the initial starting number of the fans according to the environment temperature, wherein the initial starting number is the starting number of the fans when the compressor starts to work.
Optionally, determining an initial turn-on number of the fans according to the ambient temperature includes: dividing a plurality of environment temperature intervals according to the historical environment temperature of the environment where the energy storage device is located, wherein the environment temperature intervals are equal to the total number of the fans; matching the environment temperature interval with the starting number to enable the environment temperature interval to correspond to the starting number one by one, wherein the starting number is smaller than or equal to the total number of the fans; and determining the corresponding starting number according to the environment temperature interval in which the environment temperature is positioned to obtain the initial starting number.
Optionally, the heat generating device comprises a battery pack and a power module, and before obtaining the discharge pressure of the compressor, the method further comprises: acquiring the cell temperature of the battery pack and the temperature of the power module; and controlling the energy storage device to enter the cooling mode under the condition that any one of the cell temperatures is greater than a first temperature threshold value and/or the temperature of any one of the power modules is greater than a second temperature threshold value.
According to another aspect of the embodiments of the present invention, there is also provided a fan control apparatus of an energy storage device, the energy storage device including a compressor and a plurality of fans, the compressor and the fans being used to cool heat generating devices of the energy storage device, the apparatus including: the first obtaining unit is used for obtaining the exhaust pressure of the compressor under the condition that the energy storage device is in a cooling mode, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device; the first control unit is used for controlling the rotating speed of the started fan to be lower than a first preset rotating speed under the condition that at least one fan is not started and/or the exhaust pressure is lower than a first pressure threshold value, and the first preset rotating speed is the maximum rotating speed of the minimum gear of the fan.
According to yet another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein when the program is executed by a processor, the processor executes any one of the methods.
According to another aspect of the embodiments of the present invention, there is also provided a charging pile, including: comprising a compressor, a plurality of fans, one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods described herein.
In an embodiment of the present invention, in the method for controlling a fan of an energy storage device, first, when the energy storage device is in a cooling mode, an exhaust pressure of the compressor is obtained, where the cooling mode is an operation mode in which the compressor and the fan cool a heat generating device of the energy storage device; and then, under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, controlling the rotation speed of the started fan to be smaller than a first preset rotation speed, wherein the first preset rotation speed is the maximum rotation speed of the minimum gear of the fan. According to the control method, the rotating speed of the fan is adjusted to be higher than a first preset rotating speed only under the condition that the fan is completely started and the exhaust pressure of the compressor is larger than a first pressure threshold value, so that overheating of devices of the energy storage device is avoided, the rotating speed of the fan is controlled to be lower than the first preset rotating speed under other conditions, noise is reduced, user experience is improved, and the problem that noise emitted by the fan of the energy storage device disturbs residents in the prior art is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 illustrates a flow chart of a method of controlling a fan of an energy storage device according to an embodiment of the present application;
FIG. 2 illustrates a schematic structural diagram of an energy storage device according to an embodiment of the present application;
FIG. 3 illustrates a flow chart of a method of controlling a fan of an energy storage device according to another embodiment of the present application;
FIG. 4 shows a fan control apparatus schematic of an energy storage device according to an embodiment of the present application.
Wherein the figures include the following reference numerals:
1. a first temperature acquisition unit; 2. a second temperature acquisition unit; 3. a third temperature acquisition unit; 4. a fourth temperature acquisition unit; 5. a fifth temperature acquisition unit; 6. a sixth temperature acquisition unit; 7. a CAN bus battery pack; 8. a temperature acquisition unit; 9. a battery management system unit; 10. an energy storage device host controller; 11. a thermal management unit controller; 12. a first fan duty cycle control unit; 13. a second fan duty control unit; 14. a third fan duty ratio control unit; 15. an ambient temperature detection signal module; 16. an exhaust pressure detection signal module; 17. refrigerant temperature detection signal module.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As mentioned in the background of the invention, in order to solve the above problems, noise generated by a fan of an energy storage device in the prior art disturbs people, in an exemplary embodiment of the present application, a fan control method and apparatus of an energy storage device, a computer-readable storage medium, and a charging pile are provided.
According to an embodiment of the present application, a method for controlling a fan of an energy storage device is provided, where the energy storage device includes a compressor and a plurality of fans, and the compressor and the fans are used to cool a heat generating device of the energy storage device.
Fig. 1 is a flowchart of a fan control method of an energy storage device according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S101, under the condition that the energy storage device is in a cooling mode, obtaining the exhaust pressure of the compressor, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device;
it should be noted that, taking the energy storage device as an example of a charging pile, as shown in fig. 2, the energy storage device includes a first temperature acquisition unit 1, a second temperature acquisition unit 2, a third temperature acquisition unit 3, a fourth temperature acquisition unit 4, a fifth temperature acquisition unit 5, a sixth temperature acquisition unit 6, a CAN bus 7, a battery pack temperature acquisition unit 8, a battery management system unit 9, an energy storage device host controller 10, a thermal management unit controller 11, a first fan duty cycle control unit 12, a second fan duty cycle control unit 13, a third fan duty cycle control unit 14, an ambient temperature detection signal module 15, an exhaust pressure detection signal module 16, and a refrigerant temperature detection signal module 17, the first temperature acquisition unit 1, the second temperature acquisition unit 2, the third temperature acquisition unit 3, the fourth temperature acquisition unit 4, the fifth temperature acquisition unit 5 and the sixth temperature acquisition unit 6 are respectively used for acquiring the temperatures of a first alternating current to direct current power module, a second alternating current to direct current power module, a first direct current to direct current power module, a second direct current to direct current power module, a third direct current to direct current power module and a fourth direct current to direct current power module, and are communicated and interacted with the energy storage device host controller 10 through a CAN bus 7, the temperature acquisition unit 8 is communicated and connected with the battery management system unit 9, the battery management system unit 9 is communicated and interacted with the energy storage device host controller 10 through the CAN bus 7 to send the temperature of a battery core, the environment temperature detection signal module 15, the exhaust pressure detection signal module 16 and the refrigerant temperature detection signal module 17 are communicated and interacted with the heat management unit controller 11, the heat management unit controller 11 is communicated and interacted with the energy storage device host controller 10 through the CAN bus 7, the refrigerant temperature detection signal module 17 is used for detecting the temperature of the refrigerant cooled by the fan, so as to determine the cooling efficiency of the fan according to the temperature.
In addition, the heat management group is a core component of the heat management system of the whole energy storage charging pile, the whole machine set has the heating and refrigerating functions by controlling the liquid temperature, so that the heat exchange management is carried out on the energy storage charging pile system, and the whole machine set can control the whole heat management process by self. Major detailsThe system comprises a compressor, a PTC, a water pump, a heat management fan, an expansion kettle, a condenser, an electronic expansion valve, a pipeline, a high-low voltage wire harness, a heat management controller HCU, various sensors and other components. As shown in fig. 3, the thermal management unit of the energy storage device has three operation modes, namely, a heating mode, a self-circulation mode and a cooling mode, when the minimum temperature T of the cell is reached min Heating to-20 deg.C-6 deg.C in heating mode, and regulating temperature in water region to 30 deg.C until the cell temperature rises to at least 3 deg.C and reaches 9 deg.C, and finishing heating when the minimum temperature T of the cell is reached min And maximum temperature T max At the temperature of between 6 and 30 ℃, entering a self-circulation mode without heating or cooling, and when the maximum temperature T of the battery core is max > 30 ℃ or the temperature T of the power module Work (I) At the temperature of more than 35 ℃, entering a cooling mode until T max T is less than or equal to 27 DEG C Work (Gong) ≤32℃。
In order to determine whether the energy storage device needs cooling, in an alternative embodiment, the heat generating device includes a battery pack and a power module, and before obtaining the discharge pressure of the compressor, the method further includes:
step S201, obtaining a cell temperature of the battery pack and a temperature of the power module;
step S202, when any one of the cell temperatures is greater than a first temperature threshold and/or the temperature of any one of the power modules is greater than a second temperature threshold, controlling the energy storage device to enter the cooling mode.
In the foregoing embodiment, the temperature acquisition unit 8 acquires the temperature of each battery cell, any one of the battery cell temperatures is greater than a first temperature threshold, that is, greater than 30 °, and may cause damage to the battery, the first temperature acquisition unit 1, the second temperature acquisition unit 2, the third temperature acquisition unit 3, the fourth temperature acquisition unit 4, the fifth temperature acquisition unit 5, and the sixth temperature acquisition unit 6 acquire the temperatures of the corresponding power modules, and any one of the power modules has a temperature greater than a second temperature threshold, that is, greater than 35 °, and may cause damage to the power modules, and the energy storage device is controlled to enter the cooling mode, and to be cooled in time, so as to prolong the service life of the device.
To determine the initial number of fans to turn on, in an alternative embodiment, prior to obtaining the discharge pressure of the compressor, the method further comprises:
step S301, acquiring an ambient temperature;
step S302, determining an initial turn-on number of the fan according to the ambient temperature, where the initial turn-on number is a turn-on number of the fan when the compressor starts to operate.
In the above embodiment, generally, the higher the ambient temperature is, the higher the requirement for cooling efficiency is, the initial opening number of the fan is determined by the ambient temperature, so as to avoid frequent opening and closing of the fan caused by improper opening number, and improve the efficiency of control.
Further, in order to ensure the accuracy of the initial opening number, in an alternative embodiment, the step S302 includes:
step S3021, dividing a plurality of environmental temperature intervals according to a historical environmental temperature of an environment in which the energy storage device is located, where the environmental temperature intervals are equal to the total number of the fans;
step S3022, matching the ambient temperature interval with the number of starts, so that the ambient temperature interval corresponds to the number of starts one to one, and the number of starts is less than or equal to the total number of fans;
step S3023, determining a corresponding opening number according to the environment temperature interval where the environment temperature is located, to obtain the initial opening number.
In the above embodiment, taking three fans as an example, when the ambient temperature is less than or equal to 10 ℃, only one electronic fan is started in the initial state; when the environmental temperature is more than 10 ℃ and less than or equal to 20 ℃, starting the two electronic fans in an initial state; when the temperature is lower than 20 ℃, the three electronic fans are started in the initial state, so that the problem of poor cooling effect caused by improper initial starting quantity is avoided.
Step S102, controlling the rotation speed of the turned-on fan to be less than a first predetermined rotation speed when at least one of the fans is not turned on and/or the exhaust pressure is less than a first pressure threshold, where the first predetermined rotation speed is a maximum rotation speed of a minimum gear of the fan.
Optionally, the present invention does not limit a specific process of controlling the rotation speed of the fan to be turned on to be less than a first predetermined rotation speed when at least one of the fans is not turned on and/or the exhaust pressure is less than a first pressure threshold, and any feasible manner falls within the protection scope of the present invention.
For example, in order to ensure the cooling efficiency, in an alternative embodiment, in the case that at least one of the fans is not turned on or the exhaust pressure is less than a first pressure threshold, controlling the rotation speed of the turned-on fan to be less than a first predetermined rotation speed includes:
step S1021, when the exhaust pressure is greater than a second pressure threshold and less than a third pressure threshold, adjusting the rotation speed of the turned-on fan according to the exhaust pressure so that the exhaust pressure is positively correlated with the rotation speed, where the rotation speed is greater than or equal to a second predetermined rotation speed and less than or equal to the first predetermined rotation speed, the second predetermined rotation speed is less than the first predetermined rotation speed, the second pressure threshold is less than the third pressure threshold, and the third pressure threshold is less than the first pressure threshold.
In the above embodiment, when the discharge pressure is greater than the second pressure threshold and less than the third pressure threshold, that is, the discharge pressure of the compressor is between 1.0Mpa and 2.0Mpa, the discharge pressure is in positive correlation with the rotation speed, the duty ratio of the control signal of the fan is between 15% and 35%, the linear difference between the discharge pressure and the control signal corresponds to a duty ratio of 15% for 1.0Mpa, that is, a duty ratio of 15% for 2.0Mpa, that is, a duty ratio of 35% for 2.0Mpa, that is, a minimum rotation speed of the lowest damper is a rotation speed corresponding to 15% of the duty ratio for the first predetermined rotation speed, and a maximum rotation speed of the lowest damper is a rotation speed corresponding to 35% of the duty ratio, the fan rotation speed increases with an increase of the discharge pressure to ensure the cooling effect, the first pressure threshold, the second pressure threshold, the third pressure threshold may be adjusted according to actual conditions, and the first predetermined rotation speed, the second predetermined rotation speed, and the third predetermined rotation speed may also be adjusted according to actual conditions.
During actual operation, the number of the fans that are turned on is also adjusted, for example, in an alternative embodiment, after adjusting the rotation speed of the fans that are turned on according to the exhaust pressure, the method further includes:
step S401, controlling one turned-on fan to be turned off and controlling the remaining turned-on fans to be operated at the first predetermined speed for a second predetermined time under the condition that at least two of the fans are operated at the second predetermined speed for the first predetermined time or the exhaust pressure is less than a fourth pressure threshold, wherein the fourth pressure threshold is less than the second pressure threshold;
step S402, adjusting the rotating speed of the opened fan according to the exhaust pressure.
In the above embodiment, taking three fans as an example, when three electronic fans all maintain PWM =15% for 30min continuously, or the compressor outlet pressure is less than 0.8Mpa, one electronic fan is turned off, and at the same time, the next two electronic fans are adjusted to PWM =35% for 60s continuously, and then the adjustment is performed according to the normal operation, and then when two electronic fans all maintain PWM =15% for 30min continuously, or the compressor outlet pressure is less than 0.8Mpa, the other electronic fan is turned on and adjusted to PWM =35% for 60s continuously, the two electronic fans which are operated are turned off simultaneously, and after the fan turning-on number is not changed, the rotation speed of the fan which is turned on is adjusted according to the exhaust pressure, so as to further reduce the noise by reducing the turning-on number of fans, and in addition, the fourth pressure threshold, the first predetermined time, and the second predetermined time can all be adjusted according to actual conditions.
For another example, in another optional embodiment, there are N +1 fans, and after adjusting the rotation speed of the turned-on fan according to the exhaust pressure, the method further includes:
step S501, when at most N fans operate at the first preset rotating speed for a first preset time or the exhaust pressure is greater than a first pressure threshold value, controlling one closed fan to be opened and controlling all opened fans to operate at the second preset rotating speed for a third preset time;
step S502, adjusting the rotating speed of the opened fan according to the exhaust pressure.
In the above embodiment, taking three fans as an example, when one electronic fan maintains PWM =35% for 30 consecutive minutes, or when the compressor outlet pressure is greater than 2.15Mpa (a), the other two electronic fans are turned on and adjusted to PWM =15% for 30 seconds, and one electronic fan in operation is turned off at the same time, and then adjusted according to normal operation, and then both electronic fans maintain PWM =35% for 30 consecutive minutes, or when the compressor outlet pressure is greater than 2.15Mpa (a), the other electronic fan is turned on and adjusted to PWM =15% for 30 seconds, and then adjusted according to normal operation, the number of turned-on fans is increased to ensure that the rotation speed of the fan is less than the first predetermined rotation speed, thereby further reducing noise.
The fan has a plurality of dampers, and most of the time the fan is operated in a minimum gear position, and a few of the time the dampers are raised, and in an alternative embodiment, after the discharge pressure of the compressor is obtained, the method further comprises:
step S601 of controlling the rotation speed of the fans to be turned on to be adjusted to a third predetermined rotation speed when both a first predetermined condition and a second predetermined condition are satisfied, the first predetermined condition being that all the fans are turned on, the second predetermined condition being that the exhaust pressure is greater than or equal to a first pressure threshold and less than a fifth pressure threshold, the fifth pressure threshold being greater than the first pressure threshold, the third predetermined rotation speed being greater than the first predetermined rotation speed;
step S602, when both a first predetermined condition and a third predetermined condition are satisfied, controlling the rotation speed of the turned-on fan to be adjusted to a fourth predetermined rotation speed, where the third predetermined condition is that the exhaust pressure is greater than or equal to the fifth pressure threshold, and the fourth predetermined rotation speed is greater than the third predetermined rotation speed.
In the above embodiment, the exhaust pressure is greater than or equal to the first pressure threshold, that is, the power of the compressor is high, rapid cooling is required, and all the fans are turned on, and the cooling efficiency cannot be enhanced by increasing the number of turned fans, and the cooling efficiency can only be enhanced by increasing the rotation speed of the fans, that is, increasing the damper, the exhaust pressure is greater than or equal to the first pressure threshold and less than the fifth pressure threshold, that is, greater than or equal to 2.15Mpa and less than 2.35Mpa, the rotation speed of the fans is increased to the third predetermined rotation speed, that is, the rotation speed is increased from the low damper to the medium damper, the duty ratio of the control signal of the fans reaches 50%, the exhaust pressure is greater than or equal to the fifth pressure threshold, that is, greater than or equal to 2.35Mpa, the rotation speed of the fans is increased to the fourth predetermined rotation speed, that is, the rotation speed is increased from the low damper or the medium damper to the medium damper, the duty ratio of the control signal of the fans reaches 60%, and the damper cooling effect is ensured by increasing the damper, thereby avoiding process damage to the device, and in addition, the fifth pressure threshold may be adjusted according to the actual situation.
In the method for controlling the fan of the energy storage device, firstly, under the condition that the energy storage device is in a cooling mode, the exhaust pressure of the compressor is obtained, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device; and then, under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, controlling the rotation speed of the started fan to be smaller than a first preset rotation speed, wherein the first preset rotation speed is the maximum rotation speed of the minimum gear of the fan. According to the control method, the rotating speed of the fan is adjusted to be higher than a first preset rotating speed only under the condition that the fan is completely started and the exhaust pressure of the compressor is larger than a first pressure threshold value, so that overheating of devices of the energy storage device is avoided, the rotating speed of the fan is controlled to be lower than the first preset rotating speed under other conditions, noise is reduced, user experience is improved, and the problem that noise generated by the fan of the energy storage device disturbs people in the prior art is solved.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a fan control device of an energy storage device, and it should be noted that the fan control device of the energy storage device in the embodiment of the present application may be used to execute the fan control method for the energy storage device provided in the embodiment of the present application. The fan control device of the energy storage device provided by the embodiment of the application is described below, the energy storage device comprises a compressor and a plurality of fans, and the compressor and the fans are used for cooling a heat generating device of the energy storage device.
Fig. 3 is a schematic diagram of a fan control device of an energy storage device according to an embodiment of the application. As shown in fig. 3, the apparatus includes:
a first obtaining unit 10, configured to obtain an exhaust pressure of the compressor when the energy storage device is in a cooling mode, where the cooling mode is an operation mode in which the compressor and the fan cool a heat generating device of the energy storage device;
it should be noted that, taking the energy storage device as an example of a charging pile, as shown in fig. 2, the energy storage device includes a first temperature acquisition unit 1, a second temperature acquisition unit 2, a third temperature acquisition unit 3, a fourth temperature acquisition unit 4, a fifth temperature acquisition unit 5, a sixth temperature acquisition unit 6, a CAN bus 7, a battery pack temperature acquisition unit 8, a battery management system unit 9, an energy storage device host controller 10, a thermal management unit controller 11, a first fan duty cycle control unit 12, a second fan duty cycle control unit 13, a third fan duty cycle control unit 14, an ambient temperature detection signal module 15, an exhaust pressure detection signal module 16, and a refrigerant temperature detection signal module 17, the first temperature acquisition unit 1, the second temperature acquisition unit 2, the third temperature acquisition unit 3, the fourth temperature acquisition unit 4, the fifth temperature acquisition unit 5 and the sixth temperature acquisition unit 6 are respectively used for acquiring the temperatures of a first alternating current to direct current power module, a second alternating current to direct current power module, a first direct current to direct current power module, a second direct current to direct current power module, a third direct current to direct current power module and a fourth direct current to direct current power module, and are communicated and interacted with the energy storage device host controller 10 through a CAN bus 7, the temperature acquisition unit 8 is communicated and connected with the battery management system unit 9, the battery management system unit 9 is communicated and interacted with the energy storage device host controller 10 through the CAN bus 7 to send the temperature of a battery core, the environment temperature detection signal module 15, the exhaust pressure detection signal module 16 and the refrigerant temperature detection signal module 17 are communicated and interacted with the heat management unit controller 11, the heat management unit controller 11 is communicated and interacted with the energy storage device host controller 10 through the CAN bus 7, in order to send the collected ambient temperature and exhaust pressure, the refrigerant temperature detection signal module 17 is used to detect the temperature of the refrigerant cooled by the fan, so as to determine the cooling efficiency of the fan according to the temperature.
In addition, the heat management group is a core component of the heat management system of the whole energy storage charging pile, the whole machine set has the heating and refrigerating functions by controlling the liquid temperature, so that the heat exchange management is carried out on the energy storage charging pile system, and the whole machine set can control the whole heat management process by self. The main parts comprise a compressor, a PTC, a water pump, a heat management fan, an expansion kettle, a condenser, an electronic expansion valve, a pipeline, a high-low voltage wire harness, a heat management controller HCU, various sensors and other components. As shown in fig. 3, the thermal management unit of the energy storage device has three operation modes, namely, a heating mode, a self-circulation mode and a cooling mode, when the minimum temperature T of the cell is reached min Heating to-20 deg.C-6 deg.C in heating mode, and regulating temperature in water region to 30 deg.C until the cell temperature rises to at least 3 deg.C and reaches 9 deg.C, and finishing heating when the minimum temperature T of the cell is reached min And maximum temperature T max At the temperature of between 6 and 30 ℃, entering a self-circulation mode without heating or cooling, and when the maximum temperature T of the battery core is max > 30 ℃ or the temperature T of the power module Work (Gong) At the temperature of more than 35 ℃, entering a cooling mode until T max T is less than or equal to 27 DEG C Work (Gong) ≤32℃。
In order to determine whether the energy storage device needs cooling, in an alternative embodiment, the heat generating device includes a battery pack and a power module, and the apparatus further includes:
a second obtaining unit, configured to obtain a cell temperature of the battery pack and a temperature of the power module before obtaining an exhaust pressure of the compressor;
and the second control unit is used for controlling the energy storage device to enter the cooling mode under the condition that any one of the battery cell temperatures is greater than a first temperature threshold value and/or the temperature of any one of the power modules is greater than a second temperature threshold value.
In the above embodiment, the temperature of each battery cell is collected by the temperature collection unit 8, any one of the battery cell temperatures is greater than the first temperature threshold, that is, greater than 30 °, which may result in battery damage, the first temperature collection unit 1, the second temperature collection unit 2, the third temperature collection unit 3, the fourth temperature collection unit 4, the fifth temperature collection unit 5 and the sixth temperature collection unit 6 collect the temperatures of the corresponding power modules, and any one of the power modules has a temperature greater than the second temperature threshold, that is, greater than 35 °, which may result in power module damage, and the energy storage device is controlled to enter the cooling mode, and to be cooled in time, which improves the service life of the device.
In order to determine the initial number of fans to turn on, in an alternative embodiment, the apparatus further comprises:
a third obtaining unit for obtaining an ambient temperature before obtaining a discharge pressure of the compressor;
and a determining unit for determining an initial turn-on number of the fan according to the ambient temperature, the initial turn-on number being the turn-on number of the fan when the compressor starts to operate.
In the above embodiment, generally, the higher the ambient temperature is, the higher the cooling efficiency is required to be, the initial turn-on number of the fan is determined by the ambient temperature, frequent turning-on and turning-off of the fan due to improper turn-on number is avoided, and the efficiency of control is improved.
Further, in order to ensure the accuracy of the initial opening number, in an alternative embodiment, the determining unit includes:
the processing module is used for dividing a plurality of environment temperature intervals according to the historical environment temperature of the environment where the energy storage device is located, and the environment temperature intervals are equal to the total number of the fans;
a matching module, configured to match the ambient temperature interval with the number of the switches, so that the ambient temperature interval corresponds to the number of the switches one by one, and the number of the switches is less than or equal to the total number of the fans;
and the determining module is used for determining the corresponding opening number according to the environment temperature interval in which the environment temperature is positioned to obtain the initial opening number.
In the above embodiment, taking three fans as an example, when the ambient temperature is less than or equal to 10 ℃, only one electronic fan is started in the initial state; when the environmental temperature is more than 10 ℃ and less than or equal to 20 ℃, starting the two electronic fans in an initial state; when the temperature is lower than 20 ℃, the three electronic fans are started in the initial state, so that the problem of poor cooling effect caused by improper initial starting number is avoided.
A first control unit 20, configured to, in a case that at least one of the fans is not turned on and/or the exhaust pressure is smaller than a first pressure threshold, control a rotation speed of the turned-on fan to be smaller than a first predetermined rotation speed, where the first predetermined rotation speed is a maximum rotation speed of a minimum gear of the fan.
Optionally, the present invention does not limit a specific process of controlling the rotation speed of the fan to be turned on to be less than a first predetermined rotation speed when at least one of the fans is not turned on and/or the exhaust pressure is less than a first pressure threshold, and any feasible manner falls within the protection scope of the present invention.
For example, in order to ensure cooling efficiency, in an alternative embodiment, the first control unit includes:
a first control module, configured to adjust the rotation speed of the turned-on fan according to the exhaust pressure so that the exhaust pressure is positively correlated with the rotation speed when at least one of the fans is not turned on or the exhaust pressure is less than a first pressure threshold and the exhaust pressure is greater than a second pressure threshold and less than a third pressure threshold, where the rotation speed is greater than or equal to a second predetermined rotation speed and less than or equal to the first predetermined rotation speed, the second predetermined rotation speed is less than the first predetermined rotation speed, the second pressure threshold is less than the third pressure threshold, and the third pressure threshold is less than the first pressure threshold.
In the above embodiment, when the discharge pressure is greater than the second pressure threshold and less than the third pressure threshold, that is, the discharge pressure of the compressor is between 1.0Mpa and 2.0Mpa, the discharge pressure is in positive correlation with the rotation speed, the duty ratio of the control signal of the fan is between 15% and 35%, the linear difference between the discharge pressure and the control signal corresponds to a duty ratio of 15% for 1.0Mpa, that is, a duty ratio of 15% for 2.0Mpa, and a duty ratio of 35% for 2.0Mpa, that is, a first predetermined rotation speed, the minimum rotation speed of the lowest damper is the rotation speed corresponding to 15% of the duty ratio, the maximum rotation speed of the lowest damper is the rotation speed corresponding to 35% of the duty ratio, and the fan rotation speed increases with the increase of the discharge pressure to ensure the cooling effect.
During actual operation, the number of the fans to be turned on is also adjusted, for example, in an alternative embodiment, the apparatus further includes:
a third control unit for controlling one turned-on fan to be turned off and remaining turned-on fans to be operated at the first predetermined speed for a second predetermined time after the rotation speed of the turned-on fan is adjusted according to the discharge pressure, in the case where at least two of the fans are operated at the second predetermined rotation speed for the first predetermined time or the discharge pressure is less than a fourth pressure threshold, the fourth pressure threshold being less than the second pressure threshold;
a fourth control unit for adjusting the rotation speed of the turned-on fan according to the exhaust pressure.
In the above embodiment, taking three fans as an example, when all three electronic fans maintain PWM =15% for 30min continuously, or the compressor outlet pressure is less than 0.8Mpa, one electronic fan is turned off, and the next two electronic fans are adjusted to PWM =35% for 60s continuously, and then adjusted according to normal operation, and then both electronic fans maintain PWM =15% for 30min continuously, or the compressor outlet pressure is less than 0.8Mpa, the other electronic fan is turned on and adjusted to PWM =35% for 60s continuously, and the two electronic fans that are operated are turned off simultaneously, and after the fan turn-on number is not changed, the rotation speed of the fan that is turned on is adjusted according to the exhaust pressure, so as to further reduce noise by reducing the turn-on number of fans, and in addition, the fourth pressure threshold, the first predetermined time, and the second predetermined time may all be adjusted according to actual conditions.
For another example, in another alternative embodiment, the number of the fans is N +1, and after the rotating speed of the fan which is turned on is adjusted according to the exhaust pressure, the method further includes:
a fifth control unit, configured to control a closed fan to be turned on and control all turned-on fans to operate at the second predetermined speed for a third predetermined time when at most N fans operate at the first predetermined speed for a first predetermined time or the exhaust pressure is greater than a first pressure threshold;
a sixth control unit for adjusting the rotation speed of the turned-on fan according to the discharge pressure.
In the above embodiment, taking three fans as an example, when one electronic fan maintains PWM =35% for 30min continuously, or when the compressor outlet pressure is greater than 2.15Mpa (a), the other two electronic fans are turned on and adjusted to PWM =15% for 30s continuously, and one electronic fan in operation is turned off at the same time, and then adjusted according to normal operation, and then when two electronic fans maintain PWM =35% for 30min continuously, or when the compressor outlet pressure is greater than 2.15Mpa (a), the other electronic fan is turned on and three electronic fans are adjusted to PWM =15% for 30s continuously, and then adjusted according to normal operation, and by increasing the number of turned-on fans, the rotation speed of the fan is ensured to be less than the first predetermined rotation speed, thereby further reducing noise.
The fan has a plurality of dampers, which are operated at a minimum gear most of the time and are adjusted up a few times, and in an alternative embodiment, after the discharge pressure of the compressor is obtained, the apparatus further comprises:
a seventh control unit, configured to control the rotation speed of the turned-on fan to be adjusted to a third predetermined rotation speed when both a first predetermined condition and a second predetermined condition are satisfied, where the first predetermined condition is that all the fans are turned on, the second predetermined condition is that the exhaust pressure is greater than or equal to a first pressure threshold and is less than a fifth pressure threshold, the fifth pressure threshold is greater than the first pressure threshold, and the third predetermined rotation speed is greater than the first predetermined rotation speed;
and an eighth control unit, configured to control the rotation speed of the turned-on fan to be adjusted to a fourth predetermined rotation speed when both a first predetermined condition and a third predetermined condition are satisfied, where the third predetermined condition is that the exhaust pressure is greater than or equal to the fifth pressure threshold, and the fourth predetermined rotation speed is greater than the third predetermined rotation speed.
In the above embodiment, the exhaust pressure is greater than or equal to the first pressure threshold, that is, the power of the compressor is high, rapid cooling is required, and all the fans are turned on, and the cooling efficiency cannot be enhanced by increasing the number of turned fans, and the cooling efficiency can only be enhanced by increasing the rotation speed of the fans, that is, increasing the damper, the exhaust pressure is greater than or equal to the first pressure threshold and less than the fifth pressure threshold, that is, greater than or equal to 2.15Mpa and less than 2.35Mpa, the rotation speed of the fans is increased to the third predetermined rotation speed, that is, the rotation speed is increased from the low damper to the medium damper, the duty ratio of the control signal of the fans reaches 50%, the exhaust pressure is greater than or equal to the fifth pressure threshold, that is, greater than or equal to 2.35Mpa, the rotation speed of the fans is increased to the fourth predetermined rotation speed, that is, the rotation speed is increased from the low damper or the medium damper to the medium damper, the duty ratio of the control signal of the fans reaches 60%, and the damper cooling effect is ensured by increasing the damper, thereby avoiding process damage to the device, and in addition, the fifth pressure threshold may be adjusted according to the actual situation.
In the fan control device of the energy storage device, the first obtaining unit obtains the discharge pressure of the compressor when the energy storage device is in a cooling mode, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device; the first control unit controls the rotating speed of the started fan to be lower than a first preset rotating speed under the condition that at least one fan is not started and/or the exhaust pressure is lower than a first pressure threshold value, wherein the first preset rotating speed is the maximum rotating speed of the minimum gear of the fan. The control device adjusts the rotating speed of the fan to be higher than a first preset rotating speed only under the conditions that the fan is completely started and the exhaust pressure of the compressor is larger than a first pressure threshold value, so that overheating of devices of the energy storage device is avoided, the rotating speed of the fan is controlled to be lower than the first preset rotating speed under other conditions, noise is reduced, user experience is improved, and the problem that noise generated by the fan of the energy storage device disturbs residents in the prior art is solved.
The embodiment of the application further provides a charging pile, including: a compressor, a plurality of fans, one or more processors, memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing any of the above-described methods.
The charging pile comprises a compressor and a plurality of fans, and under the condition that the energy storage device is in a cooling mode, the exhaust pressure of the compressor is obtained, wherein the cooling mode is a working mode that the compressor and the fans cool heating devices of the energy storage device; and under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, controlling the rotation speed of the started fan to be smaller than a first preset rotation speed, wherein the first preset rotation speed is the maximum rotation speed of the minimum gear of the fan. This fill electric pile only opens and the pressure of compressor is greater than under the circumstances of first pressure threshold value at the fan is whole, just adjusts the rotational speed of fan to more than first predetermined rotational speed to avoid energy memory's device overheated, other circumstances all with fan rotational speed control below first predetermined rotational speed, with the noise abatement, improve user experience, solved among the prior art noise that energy memory's fan sent and disturbed the problem of citizen.
The fan control device of the energy storage device comprises a processor and a memory, wherein the first acquisition unit, the first control unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problem that noise emitted by a fan of the energy storage device disturbs people in the prior art is solved by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium, on which a program is stored, which when executed by a processor implements the above-described method.
The embodiment of the invention provides a processor, which is used for running a program, wherein the method is executed when the program runs.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:
step S101, under the condition that the energy storage device is in a cooling mode, obtaining the exhaust pressure of the compressor, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device;
step S102, controlling the rotation speed of the turned-on fan to be less than a first predetermined rotation speed when at least one of the fans is not turned on and/or the exhaust pressure is less than a first pressure threshold, where the first predetermined rotation speed is a maximum rotation speed of a minimum gear of the fan.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:
step S101, under the condition that the energy storage device is in a cooling mode, obtaining the exhaust pressure of the compressor, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device;
step S102, controlling the rotation speed of the turned-on fan to be less than a first predetermined rotation speed when at least one of the fans is not turned on and/or the exhaust pressure is less than a first pressure threshold, where the first predetermined rotation speed is a maximum rotation speed of a minimum gear of the fan.
In the above embodiments of the present invention, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described in detail in a certain embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described apparatus embodiments are merely illustrative, and for example, the division of the above-described units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, units or modules, and may be electrical or in other forms.
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 units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a computer-readable storage medium and includes several instructions for causing 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 according to the embodiments of the present invention. And the aforementioned computer-readable storage media comprise: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) In the method for controlling the fan of the energy storage device, firstly, under the condition that the energy storage device is in a cooling mode, the exhaust pressure of the compressor is obtained, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device; and then, under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, controlling the rotation speed of the started fan to be smaller than a first preset rotation speed, wherein the first preset rotation speed is the maximum rotation speed of the minimum gear of the fan. According to the control method, the rotating speed of the fan is adjusted to be higher than a first preset rotating speed only under the condition that the fan is completely started and the exhaust pressure of the compressor is larger than a first pressure threshold value, so that overheating of devices of the energy storage device is avoided, the rotating speed of the fan is controlled to be lower than the first preset rotating speed under other conditions, noise is reduced, user experience is improved, and the problem that noise generated by the fan of the energy storage device disturbs people in the prior art is solved.
2) In the fan control device of the energy storage device, the first obtaining unit obtains the discharge pressure of the compressor when the energy storage device is in a cooling mode, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device; the first control unit controls the rotating speed of the started fan to be lower than a first preset rotating speed under the condition that at least one fan is not started and/or the exhaust pressure is lower than a first pressure threshold value, wherein the first preset rotating speed is the maximum rotating speed of the minimum gear of the fan. The control device adjusts the rotating speed of the fan to be higher than a first preset rotating speed only under the conditions that the fan is completely started and the exhaust pressure of the compressor is larger than a first pressure threshold value, so that overheating of devices of the energy storage device is avoided, the rotating speed of the fan is controlled to be lower than the first preset rotating speed under other conditions, noise is reduced, user experience is improved, and the problem that noise generated by the fan of the energy storage device disturbs residents in the prior art is solved.
3) The charging pile comprises a compressor and a plurality of fans, wherein the exhaust pressure of the compressor is obtained under the condition that the energy storage device is in a cooling mode, and the cooling mode is a working mode that the compressor and the fans cool heating devices of the energy storage device; and under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, controlling the rotation speed of the started fan to be smaller than a first preset rotation speed, wherein the first preset rotation speed is the maximum rotation speed of the minimum gear of the fan. The charging pile only adjusts the rotating speed of the fan to be higher than a first preset rotating speed under the condition that the fan is completely started and the exhaust pressure of the compressor is larger than a first pressure threshold value, so that overheating of devices of the energy storage device is avoided, the rotating speed of the fan is controlled to be lower than the first preset rotating speed under other conditions, noise is reduced, user experience is improved, and the problem that noise generated by the fan of the energy storage device disturbs residents in the prior art is solved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (11)

1. A fan control method for an energy storage device, wherein the energy storage device comprises a compressor and a plurality of fans, and the compressor and the fans are used for cooling heat generating devices of the energy storage device, and the method comprises the following steps:
under the condition that the energy storage device is in a cooling mode, acquiring the exhaust pressure of the compressor, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device;
and under the condition that at least one fan is not started and/or the exhaust pressure is smaller than a first pressure threshold value, controlling the rotation speed of the started fan to be smaller than a first preset rotation speed, wherein the first preset rotation speed is the maximum rotation speed of the minimum gear of the fan.
2. The method of claim 1, wherein controlling the speed of the fan that is turned on to be less than a first predetermined speed in the event that at least one of the fans is not turned on or the discharge pressure is less than a first pressure threshold comprises:
when the exhaust pressure is greater than a second pressure threshold and less than a third pressure threshold, the rotating speed of the turned-on fan is adjusted according to the exhaust pressure, so that the exhaust pressure and the rotating speed are in positive correlation, the rotating speed is greater than or equal to a second preset rotating speed and less than or equal to the first preset rotating speed, the second preset rotating speed is less than the first preset rotating speed, the second pressure threshold is less than the third pressure threshold, and the third pressure threshold is less than the first pressure threshold.
3. The method of claim 2, wherein after adjusting the rotational speed of the turned on fan based on the discharge pressure, the method further comprises:
under the condition that at least two fans operate for a first preset time at the second preset rotating speed or the exhaust pressure is smaller than a fourth pressure threshold value, controlling one turned-on fan to be turned off and controlling the remaining turned-on fans to operate for a second preset time at the first preset rotating speed, wherein the fourth pressure threshold value is smaller than the second pressure threshold value;
adjusting the rotation speed of the turned-on fan according to the exhaust pressure.
4. The method of claim 2, wherein there are N +1 of said fans, and after adjusting said rotational speed of said fans on based on said discharge pressure, said method further comprises:
under the condition that at most N fans operate at the first preset rotating speed for a first preset time or the exhaust pressure is greater than a first pressure threshold value, controlling one closed fan to be opened and controlling all opened fans to operate at the second preset rotating speed for a third preset time;
adjusting the rotation speed of the turned-on fan according to the exhaust pressure.
5. The method of claim 1, wherein after obtaining a discharge pressure of the compressor, the method further comprises:
controlling the rotating speed of the started fan to be adjusted to a third preset rotating speed under the condition that a first preset condition and a second preset condition are both met, wherein the first preset condition is that all the fans are started, the second preset condition is that the exhaust pressure is greater than or equal to a first pressure threshold and smaller than a fifth pressure threshold, the fifth pressure threshold is greater than the first pressure threshold, and the third preset rotating speed is greater than the first preset rotating speed;
and under the condition that a first preset condition and a third preset condition are both met, controlling the rotating speed of the started fan to be adjusted to a fourth preset rotating speed, wherein the third preset condition is that the exhaust pressure is greater than or equal to a fifth pressure threshold value, and the fourth preset rotating speed is greater than the third preset rotating speed.
6. The method of any of claims 1 to 5, wherein prior to obtaining a discharge pressure of the compressor, the method further comprises:
acquiring an ambient temperature;
and determining the initial starting number of the fans according to the environment temperature, wherein the initial starting number is the starting number of the fans when the compressor starts to work.
7. The method of claim 6, wherein determining an initial number of starts of the fan based on the ambient temperature comprises:
dividing a plurality of environment temperature intervals according to the historical environment temperature of the environment where the energy storage device is located, wherein the environment temperature intervals are equal to the total number of the fans;
matching the environment temperature interval with the starting number to enable the environment temperature interval to correspond to the starting number one by one, wherein the starting number is smaller than or equal to the total number of the fans;
and determining the corresponding opening number according to the environment temperature interval in which the environment temperature is positioned to obtain the initial opening number.
8. The method of claim 1, wherein the heat generating device comprises a battery pack and a power module, and wherein prior to obtaining the discharge pressure of the compressor, the method further comprises:
acquiring the cell temperature of the battery pack and the temperature of the power module;
and controlling the energy storage device to enter the cooling mode under the condition that any one of the cell temperatures is greater than a first temperature threshold value and/or the temperature of any one of the power modules is greater than a second temperature threshold value.
9. A fan control apparatus for an energy storage device, the energy storage device including a compressor and a plurality of fans for cooling heat generating components of the energy storage device, the apparatus comprising:
the first obtaining unit is used for obtaining the exhaust pressure of the compressor under the condition that the energy storage device is in a cooling mode, wherein the cooling mode is a working mode that the compressor and the fan cool a heating device of the energy storage device;
the first control unit is used for controlling the rotating speed of the started fan to be lower than a first preset rotating speed under the condition that at least one fan is not started and/or the exhaust pressure is lower than a first pressure threshold value, and the first preset rotating speed is the maximum rotating speed of the minimum gear of the fan.
10. A computer-readable storage medium, comprising a stored program, wherein when the program is executed by a processor, the processor performs the method of any one of claims 1 to 8.
11. A charging pile, comprising: comprising a compressor, a plurality of fans, one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing the method of any of claims 1-8.
CN202211297384.9A 2022-10-21 2022-10-21 Fan control method and device of energy storage device and charging pile Withdrawn CN115523169A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116608150A (en) * 2023-07-18 2023-08-18 宁德时代新能源科技股份有限公司 Method, apparatus and computer readable storage medium for determining rotational speed
CN116914317A (en) * 2023-08-10 2023-10-20 无锡柯诺威新能源科技有限公司 Low-temperature starting method of energy storage thermal management system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116608150A (en) * 2023-07-18 2023-08-18 宁德时代新能源科技股份有限公司 Method, apparatus and computer readable storage medium for determining rotational speed
CN116608150B (en) * 2023-07-18 2023-12-08 宁德时代新能源科技股份有限公司 Method, apparatus and computer readable storage medium for determining rotational speed
CN116914317A (en) * 2023-08-10 2023-10-20 无锡柯诺威新能源科技有限公司 Low-temperature starting method of energy storage thermal management system

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Application publication date: 20221227