CN110843577B - Intelligent charging pile power control method and device suitable for high altitude - Google Patents
Intelligent charging pile power control method and device suitable for high altitude Download PDFInfo
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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
- B60L53/31—Charging columns specially adapted for electric vehicles
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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
- B60L53/60—Monitoring or controlling charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 discloses an intelligent control method and device for power of a charging pile suitable for high altitude, wherein the method comprises the following steps: 1) Collecting the air outlet temperature T of a charging pile charging module; 2) Collecting the temperature of a core device in a charging pile charging module; 3) Collecting the altitude of the place where the charging pile is located; 4) Determining altitude correction temperature T according to altitude of charging pile h The method comprises the steps of carrying out a first treatment on the surface of the 5) Determining a device correction temperature T according to the temperature of a core device in the charging pile charging module d The method comprises the steps of carrying out a first treatment on the surface of the 6) And controlling the output power of the charging pile system. The method of the invention does not need to oversubscribe power for the charging system, can greatly reduce the cost when being applied to a high altitude area, and ensures the charging speed by fully outputting the power at the wide ambient temperature as much as possible.
Description
Technical Field
The invention relates to a charging pile charging control technology, in particular to an intelligent charging pile power control method and device suitable for high altitude.
Background
As altitude increases, air density decreases, temperature decreases, and this environment has many adverse effects on the operation of electronic devices, and the heat dissipation effect and load carrying capacity of the charging pile system are also greatly reduced. At present, most domestic charging pile designs consider normal operation in the range below 2000 meters at altitude, and intelligent control for charging derating is seldom performed for high altitudes.
The charging pile system comprises a plurality of charging power modules, and charging piles with different powers only need to configure different module numbers according to the power of a single module. Fig. 1 shows the configuration of output power of the current main current charging pile at different altitudes, as shown in fig. 1, with the boundary point of the highest altitude of 2000 meters, and the corresponding relationship between the power of a plurality of pile enterprise single modules and the whole pile and the altitude. One 120kW fills electric pile, and single module power is 15kW, and the normal condition only needs to dispose 8 charging module. However, in high altitude areas, most piles actually have more than 10 charging modules of 15kW, exceeding 25% of rated power. When the pile is operated at a high altitude, considering the heat dissipation of the whole pile and the heating condition of a single-module core device, each module is set to only output about 80% of rated power, and the rated power of the whole pile can be output. This "rough" power handling approach to high altitude operation adds significant cost.
The Chinese region is wide, the altitude of the region from east to west is gradually increased, and the altitude of many regions exceeds 2000 meters. Considering the development of the whole area of China and the popularization of electric automobiles, high-altitude charging is also becoming a normal state. Although the high altitude region has some factors which are unfavorable for the operation of electronic devices, the charging system can be operated at full load in most of time because the temperature is lower throughout the year, and derating treatment is only needed for a few times to ensure the reliable and stable operation of the system.
Aiming at the situation, the invention provides an intelligent charging control method for a high-altitude area, which reasonably and effectively controls output power by collecting the temperature of an air outlet of a charging module, the temperature of a core device of the charging module and the altitude, and ensures safe and efficient operation of charging. The invention does not need to oversubscribe power for the charging system, greatly reduces the cost in high altitude areas, and ensures the charging speed by fully outputting power at wide ambient temperature as much as possible.
Disclosure of Invention
The invention aims to provide an intelligent control method and device for power of a charging pile, which are applicable to high altitude aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: a charging pile power intelligent control method suitable for high altitude comprises the following steps:
1) Collecting the air outlet temperature T of a charging pile charging module;
2) Collecting the temperature of a core device in a charging pile charging module;
3) Collecting the altitude of the place where the charging pile is located;
4) Determining an altitude correction temperature Th according to the altitude of the place where the charging pile is located;
5) Determining a device correction temperature T according to the temperature of a core device in the charging pile charging module d ；
6) Charging pile system output power control
The general principle of charging output power control is as follows: correcting the temperature acceleration on the basis of a power curve without the temperature acceleration, and calculating the final output power;
6.1 Taking the temperature T of the air inlet of the charging system and the altitude H as influencing factors, calculating the temperature variable of the output power as follows:
T p ＝T h +T d +T；
6.2 The charging output power coefficient relation P (T, H) is as follows:
wherein P (T, H) is the ratio of the final output power to the entire pile energy output power of the charging pile system; t (T) m For a first temperature threshold, T n For the second temperature threshold value, H 1 For the first altitude threshold, H 2 Is a second altitude threshold;
6.3 Obtaining final output power according to the charging output power coefficient relation P (T, H).
According to the scheme, the sea-pulling correction temperature T in the step 4) is h The determination method of (2) is as follows:
if the altitude is lower than H 1 Temperature acceleration term T h =0; if the altitude is higher than H 2 Temperature acceleration term T h ＝△T 1 The method comprises the steps of carrying out a first treatment on the surface of the The altitude is between the altitude and the altitude correction temperature T is carried out according to each 100m of the altitude increase h The temperature was increased by 1 ℃.
According to the scheme, the sea-pulling correction temperature T in the step 4) is h The determination method of (2) is as follows:
altitude correction temperature T h The relationship with altitude H can be expressed as:
wherein H is the altitude value, k 1 ＝(H 2 -H 1 )/ΔT 1 ，b 0 Is constant.
According to the scheme, the step 5) corrects the temperature T d The determination method of (2) is as follows:
the temperature of the core device in the charging module is less than T 1 At the time, the device corrects the temperature T d =0; the temperature of the core device in the charging module is greater than T 2 Temperature T is corrected by the device at the time of temperature d ＝△T 2 The method comprises the steps of carrying out a first treatment on the surface of the The temperature of the core device inside the charging module is at T 1 And T 2 When the temperature is in the same, the device correction temperature and the device temperature are in a linear relation;
according to the scheme, the step 5) corrects the temperature T d The determination method of (2) is as follows:
wherein T is the temperature of a core device in the charging module, T 1 And T 2 And the temperature threshold value of the core device in the preset charging module is set.
The invention also provides an intelligent charging pile power control device suitable for high altitude, comprising:
the collecting module is used for collecting the air outlet temperature T of the charging pile charging module; collecting the temperature of a core device in a charging pile charging module; collecting the altitude of the place where the charging pile is located;
the altitude correction temperature determining module is used for determining an altitude correction temperature T according to the altitude of the place where the charging pile is located h ；
The device correction temperature determining module is used for determining a device correction temperature T according to the temperature of the core device in the charging pile charging module d ；
The charging pile system output power control module is used for controlling the charging pile system output power, and specifically comprises the following steps:
the general principle of charging output power control is as follows: correcting the temperature acceleration on the basis of a power curve without the temperature acceleration, and calculating the final output power;
1) Taking the temperature T of an air inlet of a charging system and the altitude H as influencing factors, calculating the temperature variable of the output power, and expressing the temperature variable as:
T p ＝T h +T d +T；
2) The charge output power coefficient relation P (T, H) is as follows:
wherein T is m For a first temperature threshold, T n For the second temperature threshold value, H 1 For the first altitude threshold, H 2 Is a second altitude threshold;
3) And obtaining final output power according to the charging output power coefficient relation P (T, H).
According to the scheme, the sea-tangle correction temperature T in the altitude correction temperature determination module h The determination method of (2) is as follows:
if the altitude is lower than H 1 Temperature acceleration term T h =0; if the altitude is higher than H 2 Temperature acceleration term T h ＝△T 1 The method comprises the steps of carrying out a first treatment on the surface of the The altitude is between the altitude and the altitude correction temperature T is carried out according to each 100m of the altitude increase h The temperature was increased by 1 ℃.
According to the above scheme, the method for determining the middle sea chest correction temperature Th in the altitude correction temperature determination module is as follows:
altitude correction temperature T h The relationship with altitude H can be expressed as:
wherein H is the altitude value, k 1 ＝(H 2 -H 1 )/ΔT 1 ，b 0 Is constant.
According to the scheme, the device correction temperature T in the device correction temperature determination module d The determination method of (2) is as follows:
the temperature of the core device in the charging module is less than T 1 At the time, the device corrects the temperature T d =0; the temperature of the core device in the charging module is greater than T 2 Temperature T is corrected by the device at the time of temperature d ＝△T 2 The method comprises the steps of carrying out a first treatment on the surface of the The temperature of the core device inside the charging module is at T 1 And T 2 When the temperature is in the same, the device correction temperature and the device temperature are in a linear relation;
according to the scheme, the device correction temperature T in the device correction temperature determination module d The determination method of (2) is as follows:
wherein T is the temperature of a core device in the charging module, T 1 And T 2 And the temperature threshold value of the core device in the preset charging module is set.
The invention has the beneficial effects that: the invention reasonably and effectively controls the output power by collecting the temperature of the inlet (outlet) of the charging system, the temperature of the core device of the charging module and the altitude, and ensures safe and efficient operation of charging. The invention does not need to oversubscribe power for the charging system, greatly reduces the cost in high altitude areas, and ensures the charging speed by fully outputting power at wide ambient temperature as much as possible.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the present mainstream charging pile with different altitude output power configurations in the background of the invention;
FIG. 2 is a schematic diagram of altitude versus temperature acceleration for an embodiment of the present invention;
FIG. 3 is a schematic diagram of a temperature and temperature acceleration relationship of a charge core power device according to an embodiment of the present invention;
FIG. 4 is a graph showing power derating without temperature acceleration terms according to an embodiment of the present invention;
FIG. 5 is a graph illustrating the charge output power at different elevation intake temperatures according to an embodiment of the present invention;
fig. 6 is a flow chart of a method of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 6, an intelligent control method for power of a charging pile suitable for high altitude comprises the following steps:
1) Collecting the air outlet temperature T of a charging pile charging module;
2) Collecting the temperature of a core device in a charging pile charging module;
3) Collecting the altitude of the place where the charging pile is located;
4) Determining altitude correction temperature T according to altitude of charging pile h ；
Altitude is lower than H 1 Temperature acceleration term T h =0; altitude is higher than H 2 Temperature acceleration term T h = Δt1; the altitude is between the two, and the temperature is accelerated by 1 ℃ according to the increment of the altitude by 100 m. Thus, the relationship between altitude acceleration temperature and altitude can be expressed as:
the user can set a local elevation value on the charging pile monitoring interface according to different regional characteristics, and the pile enterprise can set an operating elevation value before leaving the factory.
5) Determining a device correction temperature T according to the temperature of a core device in the charging pile charging module d ；
The core component of the charging pile is a charging module, the power device of the charging module is also a main heating source, the temperature of the power device is monitored in real time, corresponding power derating operation is carried out, and the service life of the device can be prolonged, so that the stable and reliable operation of the charging pile is ensured.
Referring to fig. 3, referring to the manual of the power device, a curve of the acceleration temperature of the device is fitted according to the temperature of the air inlet of the charging system. The temperature of the core device in the charging module is less than T 1 When the device correction temperature td=0; the temperature of the core device in the charging module is greater than T 2 Temperature T is corrected by the device at the time of temperature d ＝△T 2 The method comprises the steps of carrying out a first treatment on the surface of the The temperature of the core device inside the charging module is at T 1 And T 2 When the temperature is in the same, the device correction temperature and the device temperature are in a linear relation;
thus, the relationship between the power device acceleration temperature and the charging temperature can be expressed as:
6) Charging pile system output power control
Under the condition that any temperature acceleration item is not considered, the charging pile can perform power derating control according to the temperature of the air inlet of the system, as shown in fig. 4, and when the temperature is less than Tm, the charging pile charges and outputs full load; when the temperature is higher than Tn, outputting according to 20% of rated power, and stopping charging by the system; when the temperature is in between, the linear derating strategy is adopted. Thus, the relationship between the output power coefficient and temperature can be expressed as:
the general principle of charging output power control is as follows: and correcting the temperature acceleration on the basis of the power curve without the temperature acceleration, and calculating the final output power. Taking the temperature T of the air inlet of the charging system and the altitude H as influence factors, the temperature variable used for calculating the output power can be expressed as follows:
T p ＝T h +T d +T
the charge output power coefficient relation P (T, H) is as follows:
as shown in fig. 5, the charging pile continuously translates the position of the curve according to the temperature variation of the output power according to the initially designed output power curve, i.e. adjusts the actual output power.
The invention is applied to a charging pile system, the temperature sensor is used for detecting the temperature T of an air inlet (air outlet) of the charging pile system, the altitude of the working environment where the system is positioned is used for calculating the sea-pulling acceleration Th, and the temperature acceleration phase Td of a charging core power device is used for calculating the output power in real time. Thereby improving the reliability and output power maximization of the high altitude operation of the charging pile system.
The invention is not only suitable for the charging pile system, but also has guiding value for other air-cooled electrical systems with high power requirements to be applied in high altitude areas.
According to the method, the invention also provides an intelligent charging pile power control device suitable for high altitude, which comprises the following steps:
the collecting module is used for collecting the air outlet temperature T of the charging pile charging module; collecting the temperature of a core device in a charging pile charging module; collecting the altitude of the place where the charging pile is located;
the altitude correction temperature determining module is used for determining an altitude correction temperature T according to the altitude of the place where the charging pile is located h ；
Sea-tangle correction temperature T in altitude correction temperature determination module h The determination method of (2) is as follows:
if the altitude is lower than H 1 Temperature acceleration term T h =0; if the altitude is higher than H 2 Temperature acceleration term T h ＝△T 1 The method comprises the steps of carrying out a first treatment on the surface of the The altitude is between the altitude and the altitude correction temperature T is carried out according to each 100m of the altitude increase h The temperature was increased by 1 ℃.
Altitude correction temperature T h The relationship with altitude H can be expressed as:
wherein H is the altitude value, k 1 ＝(H 2 -H 1 )/ΔT 1 ，b 0 Is constant.
The device correction temperature determining module is used for determining a device correction temperature T according to the temperature of the core device in the charging pile charging module d ；
Device correction temperature T in device correction temperature determination module d The determination method of (2) is as follows:
the temperature of the core device in the charging module is less than T 1 At the time, the device corrects the temperature T d =0; the temperature of the core device in the charging module is greater than T 2 Temperature T is corrected by the device at the time of temperature d ＝△T 2 The method comprises the steps of carrying out a first treatment on the surface of the The temperature of the core device inside the charging module is at T 1 And T 2 When the temperature is in the same, the device correction temperature and the device temperature are in a linear relation;
device correction temperature T in device correction temperature determination module d The determination method of (2) is as follows:
wherein T is the temperature of a core device in the charging module, T 1 And T 2 And the temperature threshold value of the core device in the preset charging module is set.
The charging pile system output power control module is used for controlling the charging pile system output power, and specifically comprises the following steps:
the general principle of charging output power control is as follows: correcting the temperature acceleration on the basis of a power curve without the temperature acceleration, and calculating the final output power;
1) Taking the temperature T of an air inlet of a charging system and the altitude H as influencing factors, calculating the temperature variable of the output power, and expressing the temperature variable as:
T p ＝T h +T d +T；
2) The charge output power coefficient relation P (T, H) is as follows:
wherein T is m For a first temperature threshold, T n For the second temperature threshold value, H 1 For the first altitude threshold, H 2 Is a second altitude threshold;
3) And obtaining final output power according to the charging output power coefficient relation P (T, H).
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (6)
1. The intelligent control method for the power of the charging pile suitable for the high altitude is characterized by comprising the following steps of:
1) Collecting the air outlet temperature T of a charging pile charging module;
2) Collecting the temperature of a core device in a charging pile charging module;
3) Collecting the altitude of the place where the charging pile is located;
4) Determining altitude correction temperature T according to altitude of charging pile h ；
5) Determining a device correction temperature T according to the temperature of a core device in the charging pile charging module d ；
6) Controlling output power of the charging pile system;
6.1 Taking the temperature T of the air inlet of the charging system and the altitude H as influencing factors, calculating the temperature variable of the output power as follows:
T p ＝T h +T d +T；
6.2 The charging output power coefficient relation P (T, H) is as follows:
wherein P (T, H) is the ratio of the final output power to the entire pile energy output power of the charging pile system; t (T) m For a first temperature threshold, T n For the second temperature threshold value, H 1 For the first altitude threshold, H 2 As a result of the second altitude threshold value,
6.3 Obtaining final output power according to the charging output power coefficient relation P (T, H),
wherein, in the step 4), the sea plug correction temperature T h The determination method of (2) is as follows:
altitude correction temperature T h The relationship with altitude H can be expressed as:
wherein H is the altitude value, k 1 ＝(H 2 -H 1 )/ΔT 1 ，b 0 Is constant, deltaT 1 Correcting temperature T for altitude h Maximum value of (1), i.e. when the module altitude is greater than or equal to H 2 At the time T h Amplitude limiting takes the maximum value of delta T 1 ，
Said step 5) device correction temperature T d The determination method of (2) is as follows:
wherein T is the temperature of a core device in the charging module, T 1 And T 2 For charging a predetermined valueTemperature threshold, deltaT, of core device inside module 2 Temperature T is corrected for the device d Maximum value of (2), i.e. when the core temperature inside the module is greater than or equal to T 2 At the time T d Maximum delta T of amplitude limiting value 2 ，
2. The intelligent control method for the power of the charging pile for high altitude according to claim 1, wherein the sea-plug correction temperature T in the step 4) is as follows h The determination method of (2) is as follows:
if the altitude is lower than H 1 Altitude correction temperature T h =0; if the altitude is higher than H 2 Altitude correction temperature T h ＝△T 1 The method comprises the steps of carrying out a first treatment on the surface of the The altitude is between the altitude and the altitude correction temperature T is carried out according to each 100m of the altitude increase h The temperature was increased by 1 ℃.
3. The intelligent control method for the power of the charging pile for high altitude according to claim 1, wherein said step 5) device correction temperature T d The determination method of (2) is as follows:
the temperature of the core device in the charging module is less than T 1 At the time, the device corrects the temperature T d =0; the temperature of the core device in the charging module is greater than T 2 Temperature T is corrected by the device at the time of temperature d ＝△T 2 The method comprises the steps of carrying out a first treatment on the surface of the The temperature of the core device inside the charging module is at T 1 And T 2 And the device correction temperature and the device temperature are in linear relation.
4. Fill electric pile power intelligent control device suitable for high altitude, its characterized in that includes:
the collecting module is used for collecting the air outlet temperature T of the charging pile charging module; collecting the temperature of a core device in a charging pile charging module; collecting the altitude of the place where the charging pile is located;
the altitude correction temperature determining module is used for determining an altitude correction temperature T according to the altitude of the place where the charging pile is located h ；
The device correction temperature determining module is used for determining a device correction temperature T according to the temperature of the core device in the charging pile charging module d ；
The charging pile system output power control module is used for calculating the output power of the charging pile system, and specifically comprises the following steps:
1) Taking the temperature T of an air inlet of a charging system and the altitude H as influencing factors, calculating the temperature variable of the output power, and expressing the temperature variable as:
T p ＝T h +T d +T；
2) The charge output power coefficient relation P (T, H) is as follows:
wherein P (T, H) is the ratio of the final output power to the entire pile energy output power of the charging pile system, T m For a first temperature threshold, T n For the second temperature threshold value, H 1 For the first altitude threshold, H 2 As a result of the second altitude threshold value,
3) Obtaining final output power according to a charging output power coefficient relation P (T, H), wherein the altitude correction temperature determination module is used for correcting the temperature T h The determination method of (2) is as follows:
altitude correction temperature T h The relationship with altitude H can be expressed as:
wherein H is the altitude value, k 1 ＝(H 2 -H 1 )/ΔT 1 ，b 0 Is a constant value, and is used for the treatment of the skin,
the device correction temperature T in the device correction temperature determination module d The determination method of (2) is as follows:
wherein T is the temperature of a core device in the charging module, T 1 And T 2 For the preset temperature threshold value of the core device in the charging module, delta T 2 Temperature T is corrected for the device d Maximum value of (2), i.e. when the core temperature inside the module is greater than or equal to T 2 At the time T d Maximum delta T of amplitude limiting value 2 ，
5. The intelligent control device for charging pile power suitable for high altitude according to claim 4, wherein the altitude correction temperature determination module is a sea-pull correction temperature T h The determination method of (2) is as follows:
if the altitude is lower than H 1 Altitude correction temperature T h =0; if the altitude is higher than H 2 Altitude correction temperature T h ＝△T 1 The method comprises the steps of carrying out a first treatment on the surface of the The altitude is between the altitude and the altitude correction temperature T is carried out according to each 100m of the altitude increase h The temperature was increased by 1 ℃.
6. The intelligent control device for high altitude charging pile power according to claim 4, wherein the device correction temperature T in the device correction temperature determining module d The determination method of (2) is as follows:
the temperature of the core device in the charging module is less than T 1 At the time, the device corrects the temperature T d =0; the temperature of the core device in the charging module is greater than T 2 Temperature T is corrected by the device at the time of temperature d ＝△T 2 The method comprises the steps of carrying out a first treatment on the surface of the Temperature of core device inside charging moduleDegree is at T 1 And T 2 And the device correction temperature and the device temperature are in linear relation.
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| CN112208383B (en) * | 2020-10-19 | 2022-05-17 | 西安电子科技大学芜湖研究院 | Method, system and device for controlling internal temperature of silicon carbide charging pile and application |
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