CN113815467A - Charging pile current control method and related device - Google Patents
Charging pile current control method and related device Download PDFInfo
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- CN113815467A CN113815467A CN202111401752.5A CN202111401752A CN113815467A CN 113815467 A CN113815467 A CN 113815467A CN 202111401752 A CN202111401752 A CN 202111401752A CN 113815467 A CN113815467 A CN 113815467A
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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
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging 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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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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
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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
- Y02T90/14—Plug-in electric vehicles
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- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a charging pile current control method and a related device, which are applied to a processor in a charging pile. The method comprises the following steps: the operation capacity and the temperature of the fan opening of the charging gun are fully considered, the temperature of the charging gun head is collected in real time, the charging gun is ensured to work within a reliable temperature range, the charging safety and the charging reliability are ensured, the service life of internal devices of the charging pile is prolonged, the charging demand current is taken as the main flow, the temperature of the fan and the dynamic regulation function of the temperature of the charging gun head are both considered, the output current of the charging pile is promoted as far as possible, different output currents are output according to the temperature condition, and the purpose of flexibly regulating the output current is achieved.
Description
Technical Field
The application relates to the technical field of charging piles, in particular to a charging pile current control method and a related device.
Background
Along with electric automobile's continuous development, fill electric pile's application more and more extensive, along with the promotion of filling electric pile power, fill the inside temperature rise problem that brings because of the loss of electric pile, bring serious challenge for the security of filling electric pile, reliability, the temperature becomes the first obstacle in order to restrict the promotion of filling electric pile power. The rifle that charges is the key part of filling electric pile, and its charging current that allows is mainly limited by its heat dissipation condition and the ambient temperature of work, and under different ambient conditions, the output current of the rifle that charges can reach different values.
According to the traditional control method of the charging pile, the current set value of the charging gun is directly converted into the corresponding issued current of the charging gun simply in a stepping mode, and the limit value is carried out according to the maximum value of the output current of the charging gun. Although the control method can meet the basic functional requirements of the operation of the charging pile, the output current of the charging gun can completely work within a limited range, even if the required current of the electric automobile exceeds the maximum value of the output current of the charging gun, the adjustment is not performed, and the charging mode is not flexible.
Disclosure of Invention
In view of the foregoing disadvantages of the prior art, an object of the present application is to provide a charging pile current control method and a related device, which aim to improve the charging flexibility of the charging pile.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect, an embodiment of the present application provides a charging pile current control method, which is applied to a processor in a charging pile, where the charging pile includes the processor and a charging gun, and the processor is connected to the charging gun, and the method includes:
acquiring a first setting parameter of the charging gun, wherein the first setting parameter is an initial setting value of the output current of the charging gun;
determining a first current regulating quantity of the charging gun, wherein the first current regulating quantity is used for indicating the regulating quantity of the charging pile to the first setting parameter when the charging gun meets a fan temperature control condition, and the fan temperature control condition is used for representing that the fan temperature of a fan of the charging gun is kept within a first preset range;
calculating according to the first setting parameter and the first current regulating quantity to obtain a second setting parameter;
calculating the maximum current of the charging gun;
determining a second setting parameter and a first reference current in the maximum current, wherein the first reference current is an output current of the charging pile when a charging gun temperature control condition is met, the second setting parameter is used for indicating an output current set value of the charging pile when a fan temperature control condition is met, the first reference current is a current with a smaller value in the second setting parameter and the maximum current, and the charging gun temperature control condition is used for representing that the muzzle temperature of a charging gun is kept in a second preset range;
acquiring the actual current of the charging gun, wherein the actual current is the output current of the charging gun at the current moment;
carrying out proportional regulation and integral regulation according to the first reference current and the actual current, and calculating an output current setting parameter of the charging gun;
and controlling the charging gun to output corresponding output current according to the output current setting parameter.
In a second aspect, an embodiment of the present application provides a charging pile current control device, which is applied to a charging pile, the device includes:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a first setting parameter of the charging gun, the first setting parameter is an initial setting value of output current of the charging gun, and the acquisition unit is used for acquiring actual current of the charging gun, and the actual current is the output current of the charging gun at the current moment;
the calculation unit is used for determining a first current regulating quantity of the charging gun, wherein the first current regulating quantity is used for indicating the adjustment quantity of the charging pile to the first setting parameter when the charging gun meets a fan temperature control condition, and the fan temperature control condition is used for representing that the fan temperature of a fan of the charging gun is kept within a first preset range; calculating according to the first setting parameter and the first current regulating quantity to obtain a second setting parameter; and is used for calculating the maximum current of the charging gun; the charging gun control device is used for carrying out proportional regulation and integral regulation according to a first reference current and the actual current, and calculating an output current setting parameter of the charging gun;
the comparison unit is used for determining a first reference current in a second setting parameter and the maximum current, wherein the first reference current is an output current of the charging pile when a temperature control condition of a charging gun is met, the second setting parameter is used for indicating an output current setting value of the charging pile when a temperature control condition of a fan is met, the first reference current is a current with a smaller value in the second setting parameter and the maximum current, and the temperature control condition of the charging gun is used for representing that the muzzle temperature of the charging gun is kept in a second preset range;
and the control unit is used for controlling the charging gun to output corresponding output current according to the output current setting parameter.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor, and a memory, where the memory is configured to store one or more programs and is configured to be executed by the processor, and the program includes instructions for executing steps in the method according to the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute instructions of the steps in the method according to the first aspect.
The embodiment of the application has the following beneficial effects:
it can be seen that the charging pile current control method and the related device described in the embodiments of the present application are applied to a processor in a charging pile, where the charging pile includes the processor and a charging gun, and the processor is connected to the charging gun, and the method includes: acquiring a first setting parameter of the charging gun, wherein the first setting parameter is an initial setting value of the output current of the charging gun; determining a first current regulating quantity of the charging gun, wherein the first current regulating quantity is used for indicating the regulating quantity of the charging pile to the first setting parameter when the charging gun meets a fan temperature control condition, and the fan temperature control condition is used for representing that the fan temperature of a fan of the charging gun is kept within a first preset range; calculating according to the first setting parameter and the first current regulating quantity to obtain an output current setting parameter; and controlling the charging gun to output corresponding output current according to the output current setting parameter. The embodiment of the application correspondingly adjusts the output current according to the temperature so as to output different output currents according to different temperature conditions, and the purpose of flexibly adjusting the output current is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a charging pile according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a charging pile current control method according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating a change in a muzzle temperature of a charging gun according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a charging pile current control device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In the present application, "at least one" means one or more, and a plurality means two or more. In this application and/or, an association relationship of an associated object is described, which means that there may be three relationships, for example, a and/or B, which may mean: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein each of a, b, c may itself be an element or a set comprising one or more elements.
It should be noted that, in the embodiments of the present application, the term "equal to" may be used in conjunction with more than, and is applicable to the technical solution adopted when more than, and may also be used in conjunction with less than, and is applicable to the technical solution adopted when less than, and it should be noted that when equal to or more than, it is not used in conjunction with less than; when the ratio is equal to or less than the combined ratio, the ratio is not greater than the combined ratio. In the embodiments of the present application, "of", "corresponding" and "corresponding" may be sometimes used in combination, and it should be noted that the intended meaning is consistent when the difference is not emphasized.
First, partial terms referred to in the embodiments of the present application are explained so as to be easily understood by those skilled in the art.
1. The PI regulator is a linear controller, which forms a control deviation from a given value and an actual output value, and linearly combines the proportion and integral of the deviation to form a control quantity to control a controlled object. The PI regulator includes a proportional regulation and an integral regulation. The proportion regulation function is as follows: the deviation of the system is reflected in proportion, and once the deviation of the system occurs, the proportion adjustment immediately generates an adjustment function to reduce the deviation. The proportion is large, so that the adjustment can be accelerated, and the error can be reduced, but the stability of the system is reduced and even the system is unstable due to the overlarge proportion. Integral adjustment action: the system eliminates the steady state error and improves the error-free degree. Because of the error, the integral adjustment is carried out until no difference exists, the integral adjustment is stopped, and the integral adjustment outputs a constant value. The strength of the integration depends on the integration time constant Ti, the smaller Ti, the stronger the integration. Otherwise, if Ti is large, the integral action is weak, and the stability of the system is reduced by adding integral adjustment, so that the dynamic response is slowed down. The integration is often combined with two other regulation laws to form a PI regulator or a PID regulator.
At present, along with electric automobile's continuous development, fill electric pile's application more and more extensive, along with the promotion of filling electric pile power, fill the inside temperature rise problem that brings because of the loss of electric pile, the security, the reliability of charging stake have brought serious challenge, and the temperature becomes the first obstacle in order to restrict the promotion of filling electric pile power. The rifle that charges is the key part of filling electric pile, and its charging current that allows is mainly limited by its heat dissipation condition and the ambient temperature of work, and under different ambient conditions, the output current of the rifle that charges can reach different values.
According to the traditional control method of the charging pile, the current set value of the charging gun is directly converted into the corresponding issued current of the charging gun simply in a stepping mode, and the limit value is carried out according to the maximum value of the output current of the charging gun. Although the control method can meet the basic functional requirements of the operation of the charging pile, the output current of the charging gun can completely work within a limited range, even if the required current of the electric automobile exceeds the maximum value of the output current of the charging gun, the adjustment is not performed, and the charging mode is not flexible.
In view of the above problems, the present application provides a charging pile current control method and a related apparatus, which are described in detail below.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a charging pile 10 provided by the present application, the charging pile 10 includes a processor 110 and a charging gun 120, the processor 110 and the charging gun 120 are connected, the charging gun 120 is used for being connected with a charging interface of an electric vehicle, and further, the electric vehicle is charged, the charging interface is connected with a vehicle battery chip of the electric vehicle, and the vehicle battery chip is used for power management and charging the vehicle battery of the electric vehicle. The processor 110 may be an MCU, a CPU, an FPGA, or the like, which is not limited herein.
The following describes an information query method provided by the present application with specific embodiments.
As shown in fig. 2, the present application provides a charging pile current control method, which is applied to a processor in a charging pile, where the charging pile includes the processor and a charging gun, and the processor is connected to the charging gun, and the method includes:
202, determining a first current regulating quantity of the charging gun, wherein the first current regulating quantity is used for indicating an adjusting quantity of the charging pile to the first setting parameter when the charging gun meets a fan temperature control condition, and the fan temperature control condition is used for representing that the fan temperature of a fan of the charging gun is kept within a first preset range;
and 208, controlling the charging gun to output corresponding output current according to the output current setting parameter.
In an example, the charging gun blower is used for dissipating heat of a gun muzzle of the charging gun, and heat is generated in the working process of the charging gun blower, so that the temperature of the charging gun blower needs to be controlled to ensure that the temperature of the charging gun blower is kept within the first preset range.
In an example, the first setting parameter is an input current rated value of a vehicle battery chip, and the first setting parameter is obtained from the vehicle charging chip when the charging gun is connected with a charging interface of an electric vehicle. The maximum value of the output current of the charging gun cannot exceed the first setting parameter.
In the charging process, the output current needs to be adjusted in real time according to the muzzle temperature to ensure that the muzzle temperature is kept within a second preset range. As shown in FIG. 3, taking the maximum temperature of 90 ℃ as an example, when the output current is 350A, 90 ℃ is reached in about 29 min; at an output current of 400A, approximately 16min reaches 90 ℃; at an output current of 450A, 90 ℃ is reached in about 10 min; at an output current of 500A, 90 ℃ is reached for about 7 min.
In the embodiment, the operation capacity of the fan of the charging gun and the temperature of the fan port are fully considered, the temperature of the charging gun head is collected in real time, the charging gun is ensured to work in a reliable temperature range, the charging safety and reliability are ensured, and the service life of internal devices of the charging pile is ensured; on the premise of not changing the hardware of the charging pile, the intelligent control strategy is better realized by utilizing the information of the charging pile, the output capacity of the charging pile is improved, and the requirement of high-power charging in the current society is better met; meanwhile, different maximum output currents can be set according to different power supply requirements of the electric automobile.
In one possible embodiment, the determining a first current adjustment for the charging gun includes: calculating a fan pulse error; and determining the first current regulating quantity according to the fan pulse error.
In an example, the fan pulse error is an offset of a fan pulse signal, and is calculated according to the temperature of an air port of a charging gun fan.
It can be seen that, in this embodiment, the calculation of the first current adjustment amount for the first setting parameter according to the air inlet temperature of the charging gun blower is realized.
In one possible embodiment, the calculating the fan pulse error includes: acquiring an air port temperature threshold value, wherein the air port temperature threshold value is the maximum value of the air port temperature of a charging gun fan; acquiring an actual temperature value of an air port of a charging gun fan; calculating a tuyere temperature error value according to the tuyere temperature given value and the tuyere temperature actual temperature value; calculating a fan pulse control value according to the air outlet error value; determining the maximum pulse value of the air outlet machine; and calculating the fan pulse error according to the fan pulse control value and the fan pulse maximum value.
In an example, the air inlet temperature threshold is mainly determined by a charging module and an electric part inside a charging pile, the overall reliability of the charging pile in the operation process needs to be ensured by setting the air inlet temperature threshold, and the condition that an internal device of the charging pile is over-temperature cannot exist. The tuyere temperature threshold value can be set as required and generally obtained by testing through test data, and is 70 ℃ in the embodiment.
In the concrete implementation, the actual temperature of the tuyere at the current moment is detected, the difference between the tuyere temperature threshold and the actual temperature of the tuyere is calculated to obtain the tuyere temperature error value, and then the pulse control value of the air outlet machine is calculated according to the tuyere temperature error value; and finally, calculating the difference value between the fan pulse control value and the fan pulse maximum value to obtain the fan pulse error.
It can be seen that, in the embodiment, the calculation of the fan pulse error is realized.
In one possible embodiment, the calculating the blower pulse control value according to the tuyere error value includes: and carrying out proportional adjustment and integral adjustment on the air inlet temperature error value, and calculating the fan pulse control value, wherein the fan pulse control value is used for indicating a pulse signal value output to the charging gun fan at the current moment.
It can be seen that, in this embodiment, the pulse signal's of charging rifle fan present moment determination has been realized.
In one possible embodiment, the determining a charging gun current adjustment according to the fan pulse error includes: when the pulse error of the fan is less than or equal to 0, forcibly setting the current regulating quantity of the electric gun to be 0; and when the fan pulse error is larger than 0, reducing the first setting parameter.
In the specific implementation, the fan pulse error and the first current regulating quantity are in a nonlinear relation, a fixed formula is not provided, and the fan pulse error is generally obtained in a test mode, firstly, when the fan pulse error is smaller than 0, the PWM value of the fan does not reach the maximum value, the output capacity of the fan is enough to supply the current heat dissipation requirement, and at the moment, the first current regulating quantity is forced to be 0; when the fan pulse error is greater than 0, the fan pulse value exceeds the maximum value, the output capacity of the fan is insufficient, the current heat dissipation requirement cannot be met, the first setting parameter needs to be reduced, the first setting parameter is further reduced, the charging pile power is indirectly reduced, and the fan operation capacity and the charging pile power are forcibly matched.
It can be seen that, in this embodiment, realized regulating and control the purpose of rifle output current that charges based on the operating condition of fan.
In one possible embodiment, the calculating the maximum current of the charging gun includes:
acquiring a muzzle temperature threshold, wherein the muzzle temperature threshold is the maximum muzzle temperature of a charging gun;
acquiring a muzzle actual temperature value of a charging gun, and calculating according to the muzzle actual temperature value and a muzzle temperature threshold value to obtain a temperature error value;
and carrying out proportional adjustment and integral adjustment on the temperature error value to obtain the maximum current of the charging gun.
In an example, the muzzle temperature threshold may be set differently according to the material and specification of different charging gun manufacturers, in this embodiment, the muzzle temperature threshold is 90 ℃, and may be set again when charging guns of other materials and specifications are replaced.
In specific implementation, the muzzle temperature threshold value is compared with the muzzle actual temperature value to obtain a difference between the muzzle temperature threshold value and the muzzle actual temperature value, and the temperature error value is obtained.
It can be seen that, in the present embodiment, the calculation of the maximum value of the charging gun current is achieved.
In summary, the embodiment of the application fully considers the operation capacity of the charging gun blower and the temperature of the blower port, the temperature of the charging gun head is collected in real time, the charging gun is ensured to work in a reliable temperature range, the charging safety and reliability are ensured, the service life of internal devices of the charging pile is ensured, the dynamic regulation function of taking the charging demand current as the main flow and taking the fan temperature and the charging gun head temperature into consideration is adopted, the output current of the charging pile is improved as much as possible, on the premise of not changing the hardware of the charging pile, the intelligent control strategy is better realized by utilizing the information of the charging pile, the output capacity of the charging pile is improved, and the requirement of high-power charging in the current society is better met; meanwhile, different maximum output currents can be set according to different power supply requirements of the electric automobile.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It will be appreciated that the processor, in order to implement the above-described functions, may comprise corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiment of the present application, the processor may be divided into the functional units according to the above method examples, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing 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. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Referring to fig. 4, an embodiment of the present application further provides a charging pile current control device 40, applied to a charging pile, where the charging pile current control device includes:
an obtaining unit 410, configured to obtain a first setting parameter of the charging gun, where the first setting parameter is an initial setting value of an output current of the charging gun, and obtain an actual current of the charging gun, where the actual current is the output current of the charging gun at the current moment;
the calculating unit 420 is configured to determine a first current adjustment amount of the charging gun, where the first current adjustment amount is used to indicate an adjustment amount of the charging pile to the first setting parameter when the charging gun meets a fan temperature control condition, and the fan temperature control condition is used to represent that a fan temperature of a fan of the charging gun is kept within a first preset range; calculating according to the first setting parameter and the first current regulating quantity to obtain a second setting parameter; and is used for calculating the maximum current of the charging gun; the charging gun control device is used for carrying out proportional regulation and integral regulation according to a first reference current and the actual current, and calculating an output current setting parameter of the charging gun;
a comparing unit 430, configured to determine a first reference current in a second setting parameter and the maximum current, where the first reference current is an output current of the charging pile when a temperature control condition of a charging gun is met, the second setting parameter is used to indicate an output current setting value of the charging pile when a temperature control condition of a blower is met, the first reference current is a current with a smaller value in the second setting parameter and the maximum current, and the temperature control condition of the charging gun is used to indicate that a muzzle temperature of the charging gun is kept within a second preset range;
and a control unit 440, configured to control the charging gun to output a corresponding output current according to the output current setting parameter.
In one possible embodiment, in terms of determining the first current adjustment of the charging gun, the calculating unit 420 is specifically configured to: calculating a fan pulse error; and determining the first current regulating quantity according to the fan pulse error.
In a possible embodiment, in terms of calculating the fan pulse error, the calculating unit 420 is specifically configured to: acquiring an air port temperature threshold value, wherein the air port temperature threshold value is the maximum value of the air port temperature of a charging gun fan; acquiring an actual temperature value of an air port of a charging gun fan; calculating a tuyere temperature error value according to the tuyere temperature given value and the tuyere temperature actual temperature value; calculating a fan pulse control value according to the air outlet error value; determining the maximum pulse value of the air outlet machine; and calculating the fan pulse error according to the fan pulse control value and the fan pulse maximum value.
In a possible embodiment, in the aspect of calculating the blower pulse control value according to the tuyere error value, the calculating unit 420 is specifically configured to: and carrying out proportional adjustment and integral adjustment on the air inlet temperature error value, and calculating the fan pulse control value, wherein the fan pulse control value is used for indicating a pulse signal value output to the charging gun fan at the current moment.
In one possible embodiment, in terms of determining the charging gun current adjustment amount according to the fan pulse error, the calculating unit 420 includes a judging subunit configured to: when the pulse error of the fan is less than or equal to 0, forcibly setting the current regulating quantity of the electric gun to be 0; and when the fan pulse error is larger than 0, reducing the first setting parameter.
In one possible embodiment, the first setting parameter is an input current rating of a vehicle battery chip, which is obtained from the vehicle charging chip when the charging gun is connected to a charging interface of a vehicle. The present invention also provides a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps in the method described in the above embodiments.
The present invention also provides an electronic device 5, as shown in fig. 5, which includes at least one processor (processor) 51; a display screen 52; and a memory (memory) 53, and may further include a communication Interface (Communications Interface) 54 and a bus 55. The processor 51, the display 52, the memory 53 and the communication interface 54 can communicate with each other through the bus 55. The display screen 52 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 54 may transmit information. The processor 51 may call logic instructions in the memory 53 to perform the methods in the above embodiments.
Optionally, the electronic device 5 may be the charging pile described above or other electronic devices, which is not limited herein.
In addition, the logic instructions in the memory 53 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 53, which is a computer-readable storage medium, may be configured to store a software program, a computer-executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 51 executes functional applications and data processing, i.e. implements the methods in the above-described embodiments, by running software programs, instructions or modules stored in the memory 53.
The memory 53 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the electronic device 5, and the like. Further, the memory 53 may include a high-speed random access memory, and may also include a nonvolatile memory. For example, a variety of media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, may also be transient storage media.
In addition, the specific processes loaded and executed by the storage medium and the instruction processors in the mobile terminal are described in detail in the method, and are not stated herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A charging pile current control method is applied to a processor in a charging pile, the charging pile comprises the processor and a charging gun, and the processor is connected with the charging gun, and the charging pile current control method is characterized by comprising the following steps:
acquiring a first setting parameter of the charging gun, wherein the first setting parameter is an initial setting value of the output current of the charging gun;
determining a first current regulating quantity of the charging gun, wherein the first current regulating quantity is used for indicating the regulating quantity of the charging pile to the first setting parameter when the charging gun meets a fan temperature control condition, and the fan temperature control condition is used for representing that the fan temperature of a fan of the charging gun is kept within a first preset range;
calculating according to the first setting parameter and the first current regulating quantity to obtain a second setting parameter;
calculating the maximum current of the charging gun;
determining a second setting parameter and a first reference current in the maximum current, wherein the first reference current is an output current of the charging pile when a charging gun temperature control condition is met, the second setting parameter is used for indicating an output current set value of the charging pile when a fan temperature control condition is met, the first reference current is a current with a smaller value in the second setting parameter and the maximum current, and the charging gun temperature control condition is used for representing that the muzzle temperature of a charging gun is kept in a second preset range;
acquiring the actual current of the charging gun, wherein the actual current is the output current of the charging gun at the current moment;
carrying out proportional regulation and integral regulation according to the first reference current and the actual current, and calculating an output current setting parameter of the charging gun;
and controlling the charging gun to output corresponding output current according to the output current setting parameter.
2. The method of claim 1, wherein said determining a first current adjustment for the charging gun comprises:
calculating a fan pulse error;
and determining the first current regulating quantity according to the fan pulse error.
3. The method of claim 2, wherein the calculating the fan pulse error comprises:
acquiring an air port temperature threshold value, wherein the air port temperature threshold value is the maximum value of the air port temperature of a charging gun fan;
acquiring an actual temperature value of an air port of a charging gun fan;
calculating a tuyere temperature error value according to the tuyere temperature given value and the tuyere temperature actual temperature value;
calculating a fan pulse control value according to the air outlet error value;
determining the maximum pulse value of the air outlet machine;
and calculating the fan pulse error according to the fan pulse control value and the fan pulse maximum value.
4. The method of claim 3, wherein said calculating a blower pulse control value from said tuyere error value comprises:
and carrying out proportional adjustment and integral adjustment on the air inlet temperature error value, and calculating the fan pulse control value, wherein the fan pulse control value is used for indicating a pulse signal value output to the charging gun fan at the current moment.
5. The method of claim 2, wherein determining a charge gun current adjustment based on the fan pulse error comprises:
when the pulse error of the fan is less than or equal to 0, forcibly setting the current regulating quantity of the electric gun to be 0;
and when the fan pulse error is larger than 0, reducing the first setting parameter.
6. The method of any of claims 1-5, wherein said calculating a maximum current of said charging gun comprises:
acquiring a muzzle temperature threshold, wherein the muzzle temperature threshold is the maximum muzzle temperature of a charging gun;
acquiring a muzzle actual temperature value of a charging gun, and calculating according to the muzzle actual temperature value and a muzzle temperature threshold value to obtain a temperature error value;
and carrying out proportional adjustment and integral adjustment on the temperature error value to obtain the maximum current of the charging gun.
7. The method according to claim 1 or 2, characterized in that the first setting parameter is an input current rating of a vehicle battery chip, which is obtained from a vehicle charging chip when the charging gun is connected to a charging interface of the vehicle.
8. The utility model provides a fill electric pile current control device, is applied to and fills electric pile, its characterized in that, the device includes:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a first setting parameter of the charging gun, the first setting parameter is an initial setting value of output current of the charging gun, and the acquisition unit is used for acquiring actual current of the charging gun, and the actual current is the output current of the charging gun at the current moment;
the calculation unit is used for determining a first current regulating quantity of the charging gun, wherein the first current regulating quantity is used for indicating the adjustment quantity of the charging pile to the first setting parameter when the charging gun meets a fan temperature control condition, and the fan temperature control condition is used for representing that the fan temperature of a fan of the charging gun is kept within a first preset range; calculating according to the first setting parameter and the first current regulating quantity to obtain a second setting parameter; and is used for calculating the maximum current of the charging gun; the charging gun control device is used for carrying out proportional regulation and integral regulation according to a first reference current and the actual current, and calculating an output current setting parameter of the charging gun;
the comparison unit is used for determining a first reference current in a second setting parameter and the maximum current, wherein the first reference current is an output current of the charging pile when a temperature control condition of a charging gun is met, the second setting parameter is used for indicating an output current setting value of the charging pile when a temperature control condition of a fan is met, the first reference current is a current with a smaller value in the second setting parameter and the maximum current, and the temperature control condition of the charging gun is used for representing that the muzzle temperature of the charging gun is kept in a second preset range;
and the control unit is used for controlling the charging gun to output corresponding output current according to the output current setting parameter.
9. An electronic device comprising a processor, a memory for storing one or more programs and configured for execution by the processor, the programs comprising instructions for performing the steps of the method of any of claims 1-7.
10. A computer-readable storage medium, characterized by storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute instructions of the steps in the method according to any one of claims 1-7.
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| CN202111401752.5A CN113815467B (en) | 2021-11-24 | 2021-11-24 | Charging pile current control method and related device |
| PCT/CN2021/141297 WO2023092793A1 (en) | 2021-11-24 | 2021-12-24 | Charging pile current control method and related apparatus |
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| CN202111401752.5A CN113815467B (en) | 2021-11-24 | 2021-11-24 | Charging pile current control method and related device |
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| CN115573937A (en) * | 2022-12-08 | 2023-01-06 | 永联智慧能源科技(常熟)有限公司 | Charging pile fan control method, device and equipment based on current prejudgment |
| WO2023092793A1 (en) * | 2021-11-24 | 2023-06-01 | 深圳市永联科技股份有限公司 | Charging pile current control method and related apparatus |
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Also Published As
| Publication number | Publication date |
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| CN113815467B (en) | 2022-02-08 |
| WO2023092793A1 (en) | 2023-06-01 |
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