CN115320427A - Charging pile heat dissipation system control method and control equipment and direct-current charging pile - Google Patents

Charging pile heat dissipation system control method and control equipment and direct-current charging pile Download PDF

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Publication number
CN115320427A
CN115320427A CN202211243874.0A CN202211243874A CN115320427A CN 115320427 A CN115320427 A CN 115320427A CN 202211243874 A CN202211243874 A CN 202211243874A CN 115320427 A CN115320427 A CN 115320427A
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Prior art keywords
fan
target
charging pile
target area
fan group
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CN115320427B (en
Inventor
邢冬雪
董磊
郭佳
付向楠
李云祥
邱智勇
周广阔
张硕
冯超
魏钰铂
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Shijiazhuang Kelin Electric Co Ltd
Shijiazhuang Kelin Electric Equipment Co Ltd
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Shijiazhuang Kelin Electric Co Ltd
Shijiazhuang Kelin Electric Equipment Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/302—Cooling of charging equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/31—Charging columns specially adapted for electric vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/303—Temperature
    • 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

Abstract

The invention provides a charging pile heat dissipation system control method, control equipment and a direct current charging pile, and the method comprises the steps of firstly, acquiring the real-time temperature of a target area; the target area is an area with the temperature exceeding a preset critical temperature in the charging pile; then selecting a target fan group corresponding to the target area from the plurality of fan groups according to the real-time temperature of the target area, and controlling the steering direction of the target fan group to work towards the target area; the target fan group is at least one fan group which is closest to the target area in the plurality of fan groups. According to the invention, the fan groups closest to the area with higher temperature are selected to work, and face the target area during working, so that the electric energy loss of the charging pile can be effectively reduced on the premise of ensuring the cooling effect compared with the case of starting all fans to work.

Description

Charging pile heat dissipation system control method and control equipment and direct-current charging pile
Technical Field
The application belongs to the technical field of charging pile control, and particularly relates to a charging pile cooling system control method, control equipment and a direct-current charging pile.
Background
The direct current charging pile is a device which converts input alternating current into direct current with different voltage levels through a charging module through communication between automobiles and the charging pile so as to provide charging service for electric automobiles of various models. But because fill the inside module of charging of electric pile and belong to high-power device, at the in-process that charges, the module of charging in the operation can produce a large amount of heats, if these heats are dispelled untimely, can lead to filling the inside temperature of electric pile and rise, influence the normal use of the module that charges, still can cause secondary disasters such as conflagration.
At present, often install a plurality of fans in the direct current fills electric pile, all can rotate at once starting all fans of the stage of charging, adjusts the rotational speed of all fans through monitoring inside temperature. However, local overheating may exist inside the direct-current charging pile, when the rotating speed of all fans is adjusted and the temperature of the local overheating position is reduced, the fans in other areas without overheating will work, and the electric energy loss is high.
Disclosure of Invention
In view of this, the invention provides a charging pile cooling system control method, control equipment and a direct current charging pile, and aims to solve the problem that the charging pile in the prior art is high in electric energy loss.
The first aspect of the embodiment of the invention provides a method for controlling a charging pile heat dissipation system, wherein a plurality of fan sets are arranged in a charging pile; the control method of the charging pile heat dissipation system comprises the following steps:
acquiring real-time temperature of a target area; the target area is an area where the temperature in the charging pile exceeds a preset critical temperature;
selecting a target fan group corresponding to the target area from the plurality of fan groups according to the real-time temperature of the target area, and controlling the steering direction of the target fan group to work towards the target area; the target fan group is at least one fan group which is closest to the target area in the plurality of fan groups.
A second aspect of the embodiments of the present invention provides a charging pile cooling system control apparatus, in which a plurality of fan sets are disposed in a charging pile; fill electric pile cooling system controlling means and include:
the acquisition module is used for acquiring the real-time temperature of the target area; the target area is an area with the temperature exceeding a preset critical temperature in the charging pile;
the control module is used for selecting a target fan group corresponding to a target area from the plurality of fan groups according to the real-time temperature of the target area and controlling the steering direction of the target fan group to work towards the target area; the target fan group is at least one fan group which is closest to the target area in the plurality of fan groups.
A third aspect of embodiments of the present invention provides a control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the charging pile heat dissipation system control method according to the first aspect.
A fourth aspect of the embodiments of the present invention provides a dc charging pile, including a plurality of temperature sensors, a plurality of fan sets, a charging system, and the control device according to the third aspect;
the temperature sensors are used for acquiring the real-time temperature of each area in the charging pile and sending the real-time temperature to the control equipment when the charging system is charged;
and the fan groups are used for working according to the rotating direction and the rotating speed indicated by the control equipment.
A fifth aspect of embodiments of the present invention provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the method for controlling a charging pile cooling system according to the first aspect are implemented.
According to the control method, the control device and the direct-current charging pile of the charging pile heat dissipation system, firstly, the real-time temperature of a target area is obtained; the target area is an area with the temperature exceeding a preset critical temperature in the charging pile; then selecting a target fan group corresponding to the target area from the plurality of fan groups according to the real-time temperature of the target area, and controlling the steering direction of the target fan group to work towards the target area; the target fan group is at least one fan group which is closest to the target area in the plurality of fan groups. According to the invention, the fan groups closest to the area with higher temperature are selected to work, and face the target area during working, so that the electric energy loss of the charging pile can be effectively reduced on the premise of ensuring the cooling effect compared with the case of starting all fans to work.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating an implementation of a method for controlling a charging pile cooling system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dc charging pile according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a charging pile cooling system control device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a control device provided in an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
Fig. 1 is a flowchart of an implementation of a charging pile cooling system control method according to an embodiment of the present invention. As shown in fig. 1, a plurality of fan sets are arranged in the charging pile; the control method of the charging pile heat dissipation system comprises the following steps:
s110, acquiring the real-time temperature of a target area; the target area is an area where the temperature in the charging pile exceeds a preset critical temperature.
In the embodiment of the invention, the interior of the charging pile can be divided into a plurality of areas, and one or a plurality of temperature sensors are arranged in each area, so that the real-time temperature monitoring of each area can be realized. When the temperature of a certain area exceeds the critical temperature, the certain area is marked as a target area, namely an area needing cooling.
S120, selecting a target fan group corresponding to the target area from the plurality of fan groups according to the real-time temperature of the target area, and controlling the steering direction of the target fan group to work towards the target area; the target fan group is at least one fan group which is closest to the target area in the plurality of fan groups.
In this embodiment of the present invention, the number of the target fan sets may be one or more, and is specifically determined according to the real-time temperature of the target area and the subsequent temperature change of the target area, which is not limited herein. Because fill electric pile is relative confined space, consequently can carry out the forced air cooling heat dissipation to filling electric pile after the fan starts, but the radiating efficiency is relevant with turning to of fan, and when turning to of fan was towards the target area, its radiating efficiency was the highest generally.
Accordingly, when a plurality of target areas exist inside the charging pile, the direction of each fan may be directed to the nearest target area or the target area with the highest temperature, which is determined according to the heat dissipation efficiency, and is not limited herein.
In the embodiment of the invention, the fan groups closest to the area with higher temperature are selected to work, and face the target area during working, so that the electric energy loss of the charging pile can be effectively reduced on the premise of ensuring the cooling effect compared with the condition of starting all fans to work.
In some embodiments, each fan set includes a plurality of fans. Accordingly, S120 may include: when the real-time temperature of the target area exceeds a preset critical temperature, selecting a fan group closest to the target area as a target fan group; controlling the target fan set to work towards a target area according to a target angle; and the target angle corresponding to each fan is the angle corresponding to the maximum effective heat dissipation air volume of each fan at a fixed air speed.
In the embodiment of the invention, the expression of the effective heat dissipation air volume is as follows:
Figure 626794DEST_PATH_IMAGE001
(1)
wherein, the first and the second end of the pipe are connected with each other,G ar is a firstaFan to target arearThe effective heat dissipation air quantity of the air conditioner,G at is a firstaThe actual air supply quantity of each fan is controlled,θ ar is as followsaVertical angle of fan blowing surface and target arearThe vertical angle of the center of the plane of the bracket is up and down included,γ ar is as followsaVertical angle of fan blowing surface and target arearThe included angle between the right and left of the vertical angle of the center of the plane.
The relationship between the actual air supply quantity of the fan and the rotating speed of the fan is as follows:
Figure 558977DEST_PATH_IMAGE002
(2)
wherein the content of the first and second substances,G t the actual air supply quantity of the fan is,G d the rated air supply quantity of the fan is set,N t is the actual rotational speed of the fan,N d is the rated speed of the fan.
In the embodiment of the invention, when the fan set runs, even the fans of the same fan set have different turning angles during running. The fixed wind speed is the set wind speed when the fans are started, and under the wind speed, the angle enabling the maximum effective heat dissipation wind quantity is selected as the steering direction of each fan by calculating the effective heat dissipation wind quantity of each fan, so that the cooling effect of the target fan set can be improved.
In some embodiments, the method for controlling a charging pile heat dissipation system further comprises: monitoring the temperature variation trend of a target area; if the temperature variation trend is increased, increasing the rotating speed of the target fan group or adding the first fan group into the target fan group; the first fan group is a fan group which is closest to the target area except the target fan group in the plurality of fan groups.
For example, all the fan groups may be defined as the 1 st fan group to the nth fan group according to the distance from the target area, where the 1 st fan group is the fan group closest to the target area. And after the target area appears, starting the 1 st fan group to cool according to the set wind speed, if the temperature is still increased, increasing the wind speed of the 1 st fan group, and starting the 2 nd fan group until the wind speed of the 1 st fan group reaches the maximum value.
In the embodiment of the present invention, the temperature change trend is determined, and the real-time temperature change in the preset time period may be monitored, for example, the adjustment operation of the fan is performed and then the process waits for 1 minute, and the temperatures of the target area before and after 1 minute are compared. And the judgment can also be carried out according to historical data/test data, for example, whether the rotating speed can be timely cooled down or not is judged according to the optimal rotating speeds under different charging currents and different environmental temperatures, so that the temperature change trend is determined.
In some embodiments, the charging pile cooling system control method further includes: if the temperature change trend of the target area is reduced or unchanged, calculating the energy consumption of the target fan set and comparing the energy consumption of the fan set; the comparison fan group is a fan group obtained by adding a first fan group to the target fan group and/or reducing a fan group.
In the embodiment of the invention, according to the characteristic principle of the fan, namely the theoretical power of the fan at different rotating speeds is in direct proportion to the third power of the rotating speed. The power ratio of the two fans in the same working state can be obtained:
Figure 903371DEST_PATH_IMAGE003
(3)
wherein the content of the first and second substances,P A 、P B the power corresponding to the fan A and the fan B in the same working state respectively,n A 、n B the rotating speeds of the fan A and the fan B in the same working state are respectively.
Therefore, the energy consumption of each fan set can be compared according to the detected rotating speed of each fan and the formula (3).
Illustratively, in the charging pile operating state, if anykEach fan set (i.e. the target fan set) is started (k<n，nThe total number of the fan groups), and the internal temperature of the charging pile is kept stable according to the feedback of the temperature sensor, so that the energy consumption is judged according to a formula (3).
I.e. energy consumption of the target fan set
Figure 401349DEST_PATH_IMAGE004
And the energy consumption after adding another fan set to the target fan set
Figure 500892DEST_PATH_IMAGE005
And (6) carrying out comparison and judgment. Wherein the content of the first and second substances,i=1,...,k，k<n，j=1,...,k+1,，k+1≤n。
if it is
Figure 717109DEST_PATH_IMAGE006
Then no processing is required to maintain the operation of the target fan set.
If it is
Figure 802877DEST_PATH_IMAGE007
Starting one more fan group to join the target fan group, and adjusting the joining number onekThe rotating speed of the +1 fan groups is used for reducing the rotating speed of all the fans of the target fan group, so that the purpose of reducing the energy consumption of the fans is achieved.
Illustratively, if a plurality of groups (at least two groups) of fans are started under the working state of the charging pile, and the internal temperature of the charging pile tends to decrease according to the feedback of the temperature sensor, the energy consumption can be judged according to the formula (3).
I.e. energy consumption of the target fan set
Figure 155361DEST_PATH_IMAGE004
And reducing the energy consumption of one more fan group from the target fan group
Figure 363488DEST_PATH_IMAGE008
And (5) performing comparison and judgment. Wherein, the first and the second end of the pipe are connected with each other,i=1,...,k，k<n，j=1,...,k-1,，k-1≤n。
if it is
Figure 129319DEST_PATH_IMAGE009
Then no processing is required to maintain the operation of the target fan set.
If it is
Figure 815515DEST_PATH_IMAGE010
Then turn off a set of fans and adjustk-1 group of fans to reduce the speed of the whole group of fans, so as to reduce the energy consumption of the fans.
In some embodiments, S120 may include: determining a target heat dissipation capacity of the charging pile according to the real-time temperature and the preset critical temperature of each area in the charging pile; determining the maximum value of the cooling capacity of each fan according to the maximum value of the effective heat dissipation air volume of each fan group; and determining the target fan group by taking the minimum fan group control number or the minimum energy consumption as a target according to the target heat dissipation capacity and the maximum value of the cooling capacity of each fan group.
In the embodiment of the invention, besides the mode of gradually starting each fan group, a temperature model of each space in the charging pile can be established so as to determine the target heat dissipation capacity of the charging pile, then the maximum value of the effective heat dissipation capacity of each fan group is calculated according to the rotating speed and the rotating direction of each fan group, and then the maximum value is combined with the target arearThe real-time temperature and the ambient temperature of charging pile to confirm the maximum value of the cooling capacity of each fan group, finally confirm all target fan groups according to the target heat dissipation capacity and the cooling capacity of each fan group, and then start at one time, thereby realizing rapid cooling.
In some embodiments, individual fan set target zonesrThe expression of the total cooling capacity in unit time is as follows:
Figure 288085DEST_PATH_IMAGE011
(4)
wherein, the first and the second end of the pipe are connected with each other,QK r for each fan pair to target arearThe total amount of the cooling energy supplied,nthe total number of the fan sets in the charging pile is set;βis the serial number of the fan group in the charging pile,ρ a in order to supply the air with a high density,G βr is as followsβThe fan set is opposite torThe effective heat dissipation air volume of each area,C a in order to supply the air with the specific heat capacity,t s in order to determine the temperature of the environment in which the charging post is located,t r is as followsrReal time temperature of each zone.
In some embodiments, the internal space temperature model of the charging pile is:
Figure 604797DEST_PATH_IMAGE012
(5)
wherein, deltat r For charging the electric pilerThe temperature per unit time of each region decreases by a value,QK r for each fan pair to target arearThe total cooling capacity per unit time of (2),QH r for charging the internal target area of the pilerThe total heat dissipation per unit time of (a),C r for charging the electric pilerThe specific heat capacity of the internal air of each zone,ρ r for charging the electric pilerThe density of the air inside the individual zones,V r for charging the pilerAir volume of each zone.
The total heat dissipation refers to the amount of heat that the system dissipates from the space per unit time in order to maintain the temperature setting requirements within the space. Is interfered by many factors such as internal temperature, internal equipment, solar radiation, and maintenance of structural performance.
In the embodiment of the invention, the target area in the charging pilerTotal heat dissipation QHrComprises the following steps:
Figure 795607DEST_PATH_IMAGE013
(6)
wherein, the first and the second end of the pipe are connected with each other,C r for charging the internal part of the electric pilerThe specific heat capacity of air in each area is kJ/(kg DEG C);ρ r for charging the internal part of the electric pilerCarrying out area air density in kg/m;V r for charging the piler(iii) staging air volume, m;t r for charging the electric pilerIndividual zone air temperature in units of; QH r The unit is W for charging the heat dissipation capacity of the internal real-time space of the electric pile.
In the embodiment of the invention, the temperature in the charging pile can be adjusted by adjusting the relation between the cooling capacity and the cooling load. When Q isK r =QH r During the time, fill electric pile inside temperature and keep invariable.
The invention has the beneficial effects that:
1) According to the invention, the temperature models of all internal spaces of the charging pile are established for the first time through the temperature sensor matrix, so that the heat dissipation problem of the charging pile is analyzed in a more accurate manner.
2) The cooling system has pertinence, the variable speed fans are grouped according to the number and the installation positions, the local high-temperature area inside the charging pile can be cooled more pertinently through fan steering, and a targeted solution is provided for the problem that the local heating cannot be processed by the existing charging pile.
3) The heat dissipation method provided by the invention is simple and easy to realize, has low cost and has considerable industrial utilization value.
4) The invention can control the start, stop, rotating speed and steering of the fan in real time on the basis of keeping good heat dissipation of the charging pile, reduce energy consumption and improve the utilization rate of electric energy.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 2 is a schematic structural diagram of a dc charging pile provided in an embodiment of the present invention. As shown in fig. 2, the dc charging pile includes a plurality of temperature sensors 21, a plurality of fan sets 22, a charging system 23, and a control device 24; the temperature sensors 21 are used for acquiring real-time temperatures of all areas in the charging pile and sending the temperatures to the control equipment 24 when the charging system 23 is charged; a plurality of fan sets 22 for operating in accordance with the rotational direction and speed indicated by control apparatus 24.
In the embodiment of the invention, a plurality of temperature sensors 21 form a temperature sensor matrix and are respectively distributed in m different spaces inside the charging pile. The speed and direction of rotation of the plurality of fan sets 22 are adjustable. The control device 24 includes a calculation module, a steering control module, and a rotational speed control module. Wherein, steering control module includes two step motor and a plurality of steering gear, can carry out swing from top to bottom and left and right sides to each fan. The rotating speed control module can control the starting and stopping of the fan and adjust the rotating speed of the fan so as to change the air output in the charger.
In the embodiment of the invention, the calculation module is used for executing the control method of the charging pile heat dissipation system in any one of the embodiments, and then the calculated rotating speed and the calculated steering are sent to the rotating speed control module and the steering control module, so that the charging pile is cooled.
Fig. 3 is a schematic structural diagram of a charging pile cooling system control device according to an embodiment of the present invention. As shown in fig. 3, in some embodiments, a plurality of fan sets are disposed within the charging post. Fill electric pile cooling system controlling means 3 includes:
an obtaining module 310, configured to obtain a real-time temperature of a target area; the target area is an area where the temperature in the charging pile exceeds a preset critical temperature.
The control module 320 is configured to select a target fan group corresponding to a target area from the plurality of fan groups according to a real-time temperature of the target area, and control a steering direction of the target fan group to work towards the target area; the target fan group is at least one fan group which is closest to the target area in the plurality of fan groups.
Optionally, each fan set comprises a plurality of fans. The control module 320 is specifically configured to select a fan group closest to the target area as the target fan group when the real-time temperature of the target area exceeds a preset critical temperature; controlling the target fan set to work towards a target area according to a target angle; and the target angle corresponding to each fan is the angle corresponding to the maximum effective heat dissipation air quantity of each fan at a fixed air speed.
Optionally, fill electric pile cooling system controlling means 3 and still include: the adjusting module is used for monitoring the temperature change trend of the target area; if the temperature change trend is rising, increasing the rotating speed of the target fan group or adding the first fan group into the target fan group; the first fan group is a fan group which is closest to the target area except the target fan group in the plurality of fan groups.
Optionally, the adjusting module is further configured to calculate the energy consumption of the target fan set and the energy consumption of the comparative fan set when the temperature variation trend of the target area is reduced or unchanged; the comparison fan group is a fan group obtained by adding a first fan group to the target fan group and/or reducing a fan group.
Optionally, the control module 320 is specifically configured to determine a target heat dissipation amount of the charging pile according to the real-time temperature and the preset critical temperature of each region in the charging pile; determining the maximum value of the cooling capacity of each fan according to the maximum value of the effective heat dissipation air quantity of each fan group; and determining the target fan group by taking the minimum fan group control number or the minimum energy consumption as a target according to the target heat dissipation capacity and the maximum value of the cooling capacity of each fan group.
Optionally, the expression of the effective heat dissipation air volume is as follows:
Figure 347811DEST_PATH_IMAGE014
wherein the content of the first and second substances,G ar is as followsaFan to target arearThe effective heat dissipation air quantity of the air conditioner,G at is a firstaThe actual air supply quantity of each fan is increased,θ ar is a firstaVertical angle of fan blowing surface and target arearThe vertical angle of the center of the plane of the bracket is up and down included,γ ar is as followsaVertical angle of fan blowing surface and target arearThe vertical angle of the center of the plane is the left-right included angle.
Optionally, each fan group is for a target arearThe expression of the total cooling capacity is as follows:
Figure 409308DEST_PATH_IMAGE015
wherein the content of the first and second substances,QK r for each fan pair to target arearThe total amount of cooling energy supplied by the heat exchanger,nthe total number of the fan sets in the charging pile;βthe serial number of the fan group in the charging pile,ρ a in order to supply the air with a high density,G βr for each fan group torThe effective heat dissipation air volume of each area,C a in order to supply the air with the specific heat capacity,t s in order to determine the temperature of the environment in which the charging post is located,t r is as followsrReal time temperature of each zone.
Optionally, the control module 320 is specifically configured to:
Figure 959238DEST_PATH_IMAGE012
wherein, deltat r For charging the electric pilerThe temperature per unit time of each region decreases by a value,QK r for each fan pair to target arearThe total cooling capacity per unit time of (1),QH r for charging the internal target area of the pilerThe total heat dissipation per unit time of (a),C r for charging the pilerThe specific heat capacity of the internal air of each zone,ρ r for charging the pilerThe density of the air inside the individual zones,V r for charging the pilerThe air volume of each zone. The charging pile cooling system control device provided by the embodiment can be used for executing the method embodiment, the implementation principle and the technical effect are similar, and the details are not repeated here.
Fig. 4 is a schematic diagram of a control device provided in an embodiment of the present invention. As shown in fig. 4, a control apparatus 4 according to an embodiment of the present invention is provided, the control apparatus 4 according to the embodiment including: a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. When executing computer program 42, processor 40 implements the steps of each charging post heat dissipation system control method embodiment described above, such as S110 to S120 shown in fig. 1. Alternatively, the processor 40, when executing the computer program 42, implements the functions of the various modules/units in the various system embodiments described above, such as the functions of the modules 310-320 shown in fig. 3.
Illustratively, the computer program 42 may be partitioned into one or more modules/units, which are stored in the memory 41 and executed by the processor 40 to implement the present invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 42 in the control device 4.
The control device 4 may be an MCU, an ECU, or the like, and is not limited thereto. The terminal may include, but is not limited to, a processor 40, a memory 41. It will be appreciated by those skilled in the art that fig. 4 is merely an example of the control device 4 and does not constitute a limitation of the control device 4 and may include more or less components than those shown, or combine certain components, or different components, e.g. the terminal may also include input output devices, network access devices, buses, etc.
The Processor 40 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may be an internal storage unit of the control device 4, such as a hard disk or a memory of the control device 4. The memory 41 may also be an external storage device of the control device 4, such as a plug-in hard disk provided on the control device 4, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 41 may also include both an internal storage unit of the control device 4 and an external storage device. The memory 41 is used for storing computer programs and other programs and data required by the terminal. The memory 41 may also be used to temporarily store data that has been output or is to be output.
The embodiment of the invention provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the charging pile heat dissipation system control method embodiment are realized.
The computer-readable storage medium stores a computer program 42, where the computer program 42 includes program instructions, and the program instructions, when executed by the processor 40, implement all or part of the processes in the method of the embodiments, and may also be implemented by the computer program 42 instructing associated hardware, and the computer program 42 may be stored in a computer-readable storage medium, and the computer program 42, when executed by the processor 40, may implement the steps of the method embodiments. The computer program 42 comprises, among other things, computer program code, which may be in the form of source code, object code, an executable file or some intermediate form. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like.
The computer readable storage medium may be an internal storage unit of the terminal of any of the foregoing embodiments, such as a hard disk or a memory of the terminal. The computer readable storage medium may also be an external storage device of the terminal, such as a plug-in hard disk provided on the terminal, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal. The computer-readable storage medium is used for storing computer programs and other programs and data required by the terminal. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by functions and internal logic of the process, and should not limit the implementation process of the embodiments of the present invention in any way.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, 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 or recited in any embodiment.
Those of ordinary skill in the art will 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 depends upon the particular application and design constraints imposed on the implementation. 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 present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other ways. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, a module or a unit may be divided into only one logical function, and may be implemented in other ways, for example, a plurality of 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.
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 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 modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the embodiments of the present invention may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the embodiments of the method. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. A control method of a charging pile heat dissipation system is characterized in that a plurality of fan sets are arranged in a charging pile; the method comprises the following steps:
acquiring real-time temperature of a target area; the target area is an area where the temperature in the charging pile exceeds a preset critical temperature;
selecting a target fan group corresponding to a target area from the plurality of fan groups according to the real-time temperature of the target area, and controlling the steering direction of the target fan group to work towards the target area; the target fan group is at least one fan group which is closest to a target area in the plurality of fan groups.
2. The charging pile cooling system control method according to claim 1, wherein each fan group comprises a plurality of fans;
selecting a target fan group corresponding to a target area from the plurality of fan groups according to the real-time temperature of the target area, and controlling the steering direction of the target fan group to work towards the target area comprises:
when the real-time temperature of the target area exceeds the preset critical temperature, selecting a fan group closest to the target area as a target fan group;
controlling the target fan set to work towards the target area according to a target angle; and the target angle corresponding to each fan is the angle corresponding to the maximum effective heat dissipation air quantity of each fan at a fixed air speed.
3. The charging pile cooling system control method according to claim 1, further comprising:
monitoring the temperature variation trend of a target area;
if the temperature variation trend is increased, increasing the rotating speed of the target fan group or adding a first fan group into the target fan group; the first fan group is a fan group which is closest to a target area except the target fan group in the plurality of fan groups.
4. The charging pile cooling system control method of claim 3, further comprising:
if the temperature change trend of the target area is reduced or unchanged, calculating the energy consumption of the target fan set and comparing the energy consumption of the fan set; the comparison fan group is a fan group obtained by adding a first fan group to the target fan group and/or reducing a fan group.
5. The method of claim 1, wherein selecting the target fan set corresponding to the target area from the plurality of fan sets according to the real-time temperature of the target area comprises:
determining the target heat dissipation capacity of the charging pile according to the real-time temperature of each region in the charging pile and the preset critical temperature;
determining the maximum value of the cooling capacity of each fan according to the maximum value of the effective heat dissipation air volume of each fan group;
and determining the target fan group by taking the minimum fan group control number or the minimum energy consumption as a target according to the target heat dissipation capacity and the maximum value of the cooling capacity of each fan group.
6. The charging pile heat dissipation system control method of claim 5, wherein the effective heat dissipation air volume is expressed as:
Figure 938003DEST_PATH_IMAGE001
wherein the content of the first and second substances,G ar is as followsaFan to target arearThe effective heat dissipation air quantity of the air conditioner,G at is as followsaThe actual air supply quantity of each fan is controlled,θ ar is as followsaThe vertical angle of the fan blowing surface and the target arearThe vertical angle of the center of the plane is up and down included angle,γ ar is as followsaThe vertical angle of the fan blowing surface and the target arearThe vertical angle of the center of the plane is the left-right included angle.
7. The method of claim 5, wherein the fan pack is positioned in a target arearThe expression of the total cooling capacity is as follows:
Figure 966002DEST_PATH_IMAGE002
wherein, the first and the second end of the pipe are connected with each other,QK r for each fan pair to target arearThe total amount of the cooling energy supplied,nthe total number of the fan sets in the charging pile is shown;βis the serial number of the fan group in the charging pile,ρ a in order to supply the air with a high density,G βr is as followsβThe fan set is opposite torThe effective heat dissipation air volume of each area,C a in order to supply the air with the specific heat capacity,t s is the temperature of the environment in which the charging post is located,t r is as followsrReal time temperature of each zone.
8. The method for controlling the charging pile cooling system according to claim 5, wherein the step of determining the target cooling capacity of the charging pile according to the real-time temperature and the preset critical temperature of each area in the charging pile comprises the following steps:
Figure 413164DEST_PATH_IMAGE003
wherein, deltat r Is the charging pilerOf a regionThe temperature per unit time is decreased by a value,QK r for each fan pair to target arearThe total cooling capacity per unit time of (1),QH r is the internal target area of the charging pilerThe total heat dissipation per unit time of (a),C r for the charging pilerThe specific heat capacity of the internal air of each zone,ρ r for the charging pilerThe density of the air inside the individual zones,V r for charging the pilerThe air volume of each zone.
9. A control apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the charging pile heat dissipation system control method of any one of claims 1 to 8 when executing the computer program.
10. A dc charging post comprising a plurality of temperature sensors, a plurality of fan sets, a charging system, and the control device of claim 9;
the temperature sensors are used for collecting real-time temperatures of all areas in the charging pile and sending the real-time temperatures to the control equipment when the charging system is charged;
and the fan groups are used for working according to the steering direction and the rotating speed indicated by the control equipment.
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