Charging operation error compensation control method and system based on charging pile

Abstract

The invention relates to the technical field of charging piles, and discloses a charging pile-based charging operation error compensation control method, which comprises the following steps of: 1, acquiring current data numbers at different temperatures to form a temperature current set, acquiring voltage data numbers at different temperatures to form a temperature voltage set, and acquiring a temperature current set; the method comprises the steps of 1, acquiring current data numbers under different humidity to form a humidity current set, 2, acquiring voltage data numbers under different humidity to form a humidity voltage set, 3, calculating a temperature current change value and a temperature voltage change value, 4, calculating a humidity current difference value and a humidity voltage difference value, and 5, calculating the humidity current difference value and the humidity voltage difference value. 5, comparing the temperature change power with a corresponding threshold value, and judging whether the current temperature needs to be subjected to error compensation, 6, comparing the humidity change power with a corresponding threshold value, and judging whether the current humidity needs to be subjected to error compensation, and 7, carrying out corresponding compensation under the condition of judging that the error compensation needs to be carried out. And charging precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a charging operation error compensation control method and system based on a charging pile. Background Art

[0002] A charging pile, also known as an electric vehicle charging station or electric vehicle power supply equipment, is a device that provides electric energy to electric vehicles so that they can continue to run. Its function is similar to that of a gas station for traditional fuel vehicles, but it transmits electricity instead of fuel. The working principle of a charging pile mainly involves two aspects: power conversion and transmission. Power conversion is the core part of a charging pile. It is a converter that converts grid power into DC power. There are two main ways of power transmission: wired transmission and wireless transmission. As an important supporting facility for new energy vehicles, charging piles are not only constantly innovating and developing in technology, but also driven by policies and market demand. Their number and coverage are also expanding. In the future, with the further popularization of new energy vehicles and the advancement of technology, the functions and services of charging piles will also become more complete and intelligent.

[0003] During the actual operation of charging piles, errors may occur in the charging process due to various factors, resulting in an imbalance between the fees actually paid by customers and the electricity charged by the car, thus leading to overcharging or undercharging. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a charging operation error compensation control method and system based on a charging pile, which has the advantages of monitoring and analyzing the influence of different temperatures and humidities on the charging quality of the charging pile, and then making corresponding compensation, which helps to reduce errors in the charging process, improve charging accuracy, and more comprehensively understand the working status of the battery, so that the charging strategy can be adjusted according to the actual status of the battery during the charging process, thereby optimizing battery performance and extending battery life, etc.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solution: a charging operation error compensation control method based on a charging pile, comprising the following steps, specifically:

[0008] Step 1: Collect current data at different temperatures and number them to form a temperature current set, collect voltage data at different temperatures and number them to form a temperature voltage set;

[0009] Step 2: Collect current data under different humidity conditions, and number them to form a humidity current set; collect voltage data under different humidity conditions, and number them to form a humidity voltage set;

[0010] Step 3, calculating the temperature current change value WLB and the temperature voltage change value WYB respectively according to the temperature current set and the temperature voltage set;

[0011] Step 4: Calculate the humidity current difference SLB and the humidity voltage difference SYB respectively according to the humidity current set and the humidity voltage set;

[0012] Step 5: Compare the temperature change power WDgl with the corresponding threshold value to determine whether error compensation is required for the current temperature;

[0013] Step 6: Compare the humidity change power SDgl with the corresponding threshold value to determine whether the current humidity needs error compensation;

[0014] Step 7: When it is determined that error compensation is required, perform corresponding compensation.

[0015] Preferably, in step 1, the temperature current sets are numbered as follows: The temperature voltage sets are numbered as follows: Said Respectively represent the first temperature current data and the first temperature voltage data in the temperature current set and the temperature voltage set, They represent the last temperature current data and the last temperature voltage data in the temperature current set and the temperature voltage set respectively, wherein the upper right subscript s is the corresponding temperature, and n represents that there are n collected data in each data set.

[0016] Preferably, in step 2, the humidity current set is numbered as follows: The humidity voltage sets are numbered as follows: Said Respectively represent the first humidity current data and the first humidity voltage data in the humidity current set and humidity voltage set, the They represent the last humidity current data and the last humidity voltage data in the humidity current set and humidity voltage set respectively, where the upper right subscript h is the corresponding humidity, and n represents that there are n collected data in each data set.

[0017] Preferably, in step 3, the calculation formula of the temperature current change value WLB is as follows:

[0018]

[0019] In the above formula, Represents the difference between any value in the humidity current concentration and the value before any value, Represents the humidity current concentration, starting from i=2, the sum of the differences between any value and the previous value of any value, and n-1 represents the total number of groups of value differences in the temperature current concentration.

[0020] Preferably, in step 3, the calculation formula of the temperature voltage change value WYB is as follows:

[0021]

[0022] In the above formula, Represents the difference between any value in the temperature voltage set and the value before any value. It represents the sum of the differences between any value and the previous value of any value in the temperature voltage set, starting from i=2, and n-1 represents the total number of groups of value differences in the temperature voltage set.

[0023] Preferably, in step 4, the calculation formula of the humidity current difference SLB is as follows:

[0024]

[0025] In the above formula, Represents the humidity current concentration current humidity current, SL α represents the humidity current under standard conditions, and ω is the weighted influence of the current in humidity.

[0026] Preferably, in step 4, the calculation formula of the humidity voltage difference SYB is as follows:

[0027]

[0028] In the above formula, Represents the current humidity voltage in the humidity voltage concentration, SL α Represents the humidity voltage under standard conditions, is the weighted effect of humidity on voltage.

[0029] Preferably, in step 5, the temperature change power WDgl is calculated as follows:

[0030] WDgl=WLB*WYB*τ

[0031] In the above formula, τ is the weighted effect of power under the influence of temperature.

[0032] When the temperature change power WDgl is greater than the temperature change power threshold, it means that the current temperature needs to be compensated for the corresponding error.

[0033] Preferably, in step six, the calculation method of humidity change power SDgl is as follows:

[0034] SDgl=SLB*SYB

[0035] When the humidity change power SDgl is greater than the humidity change power threshold, it means that the current humidity needs corresponding error compensation.

[0036] A charging operation error compensation control system based on a charging pile, based on a charging operation error compensation control method based on a charging pile according to claims 1 to 9, comprising a temperature acquisition module, a humidity acquisition module, an analysis module, a comparison module and a compensation module;

[0037] The temperature acquisition module collects current and voltage data at different temperatures, and composes a temperature current set and a temperature voltage set accordingly and sends them to the analysis module. The humidity acquisition module collects current and voltage data at different humidity, and composes a humidity current set and a humidity voltage set accordingly and sends them to the analysis module. The analysis module calculates the temperature current change value WLB and the temperature voltage change value WYB according to the temperature current set and the temperature voltage set respectively and sends them to the comparison module. The analysis module calculates the humidity current difference SLB and the humidity voltage difference SYB according to the humidity current set and the humidity voltage set respectively and sends them to the comparison module. The comparison module calculates the temperature change power WDgl and the humidity change power SDgl, and compares them according to the corresponding threshold value to determine whether error compensation is required. If error compensation is required, a signal is sent to the compensation module for corresponding compensation.

[0038] Compared with the prior art, the present invention provides a charging operation error compensation control method and system based on a charging pile, which has the following beneficial effects:

[0039] 1. The present invention collects and records current and voltage data at different temperatures to form corresponding data sets, which is convenient for comprehensive analysis of voltage and current at different temperatures, and provides a strong data basis for subsequent data analysis. The temperature current change value WLB and the temperature voltage change value WYB are calculated based on the above data sets, which avoids the influence of temperature on the chemical reaction rate and internal resistance of the battery, and safety problems such as overcharging or undercharging caused by improper temperature control. Then, the temperature change power WDgl and the temperature change power threshold are calculated and analyzed and corresponding compensation is performed, which can ensure that the best charging effect can be obtained under different temperature conditions, help reduce errors in the charging process, improve charging accuracy, and more comprehensively understand the working status of the battery, so that the charging strategy can be adjusted according to the actual status of the battery during the charging process, thereby optimizing battery performance and extending battery life.

[0040] 2. The present invention forms a corresponding data set by collecting and recording current and voltage data under different humidity conditions, which is convenient for comprehensive analysis and judgment of current and voltage under different humidity conditions, and provides a stable data basis for analyzing the operating conditions of charging piles under different humidity conditions. By calculating the humidity current difference SLB and the humidity voltage difference SYB of the above data set, the operating working status of the charging pile can be more comprehensively understood under different humidity factors, and then a more scientific and reasonable charging strategy can be formulated accordingly to optimize battery performance, extend battery life, reduce battery aging speed, improve charging accuracy, and reduce errors in the charging process. The humidity change power SDgl is calculated and compared with the humidity change power threshold, and the charging strategy can be dynamically adjusted, such as reducing the charging power at high humidity to avoid short circuit, and appropriately increasing the charging power at low humidity to promote chemical reaction. This can not only ensure that the charging process is more efficient, but also effectively reduce energy loss, improve overall charging efficiency, and improve charging accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a step diagram of the method of the present invention;

[0042] Figure 2 It is a schematic diagram of the system flow of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1-2 A charging operation error compensation control method based on a charging pile comprises the following steps, the specific steps being:

[0045] Step 1: Collect current data at different temperatures and number them to form a temperature current set, collect voltage data at different temperatures and number them to form a temperature voltage set;

[0046] The temperature current sets are numbered as: The temperature voltage sets are numbered as: Represent the first temperature current data and the first temperature voltage data in the temperature current set and the temperature voltage set respectively. Respectively represent the last temperature current data and the last temperature voltage data in the temperature current set and the temperature voltage set, where the upper right subscript s is the corresponding temperature, and n represents that there are n collected data in each data set;

[0047] By collecting and recording the current and voltage data at different temperatures to form corresponding data sets, it is convenient to conduct a comprehensive analysis of the voltage and current at different temperatures, provide a strong data basis for subsequent data analysis, and facilitate a comprehensive analysis of the operating conditions of the charging piles according to different temperatures;

[0048] Step 2: Collect current data under different humidity conditions, and number them to form a humidity current set; collect voltage data under different humidity conditions, and number them to form a humidity voltage set;

[0049] The humidity current sets are numbered: The humidity voltage sets are numbered as: Respectively represent the first humidity current data and the first humidity voltage data in the humidity current set and humidity voltage set, They represent the last humidity current data in the humidity current set and the last humidity voltage data in the humidity voltage set, respectively, where the upper right subscript h is the corresponding humidity, and n represents that there are n collected data in each data set;

[0050] By collecting and recording the current and voltage data under different humidity conditions to form corresponding data sets, it is convenient to conduct a comprehensive analysis and judgment of the current and voltage under different humidity conditions, and provide a stable data basis for analyzing the operating conditions of charging piles under different humidity conditions, which is convenient for subsequent analysis and judgment;

[0051] Step 3, calculating the temperature current change value WLB and the temperature voltage change value WYB respectively according to the temperature current set and the temperature voltage set;

[0052] The calculation formula of temperature current change value WLB is as follows:

[0053]

[0054] In the above formula, Represents the difference between any value in the humidity current concentration and the value before any value, represents the humidity current concentration, starting from i=2, the sum of the differences between any value and the value before any value, and n-1 represents the total number of groups of value differences in the temperature current concentration;

[0055] The calculation formula of temperature voltage change value WYB is as follows:

[0056]

[0057] In the above formula, Represents the difference between any value in the temperature voltage set and the value before any value. represents the sum of the differences between any value and the value before any value in the temperature voltage concentration, starting from i=2, and n-1 represents the total number of groups of value differences in the temperature voltage concentration;

[0058] By calculating the temperature current change value WLB and the temperature voltage change value WYB, the safety problems such as overcharging or undercharging caused by improper temperature control due to the influence of temperature on the chemical reaction rate and internal resistance of the battery are avoided;

[0059] Step 4: Calculate the humidity current difference SLB and the humidity voltage difference SYB respectively according to the humidity current set and the humidity voltage set;

[0060] The calculation formula of humidity current difference SLB is as follows:

[0061]

[0062] In the above formula, Represents the humidity current concentration current humidity current, SL α represents the humidity current under standard conditions, and ω is the weighted influence of the current in humidity;

[0063] The calculation formula of humidity voltage difference SYB is as follows:

[0064]

[0065] In the above formula, Represents the current humidity voltage in the humidity voltage concentration, SL α Represents the humidity voltage under standard conditions, is the weighted effect of humidity on voltage;

[0066] By calculating the humidity current difference SLB and humidity voltage difference SYB, we can get a more comprehensive understanding of the operating status of the charging pile under different humidity factors, and then formulate a more scientific and reasonable charging strategy accordingly to optimize battery performance, extend battery life, reduce battery aging speed, improve charging accuracy, and reduce errors in the charging process;

[0067] Step 5: Compare the temperature change power WDgl with the corresponding threshold value to determine whether error compensation is required for the current temperature;

[0068] The temperature change power WDgl is calculated as follows:

[0069] WDgl=WLB*WYB*τ

[0070] In the above formula, τ is the weighted effect of power under the influence of temperature.

[0071] When the temperature change power WDgl is greater than the temperature change power threshold, it means that the current temperature needs to be compensated for the corresponding error;

[0072] By analyzing the temperature change power WDgl and the temperature change power threshold and making corresponding compensation, it can ensure the best charging effect under different temperature conditions, help reduce the error in the charging process, improve the charging accuracy, and more comprehensively understand the working status of the battery, so that the charging strategy can be adjusted according to the actual status of the battery during the charging process, thereby optimizing battery performance and extending battery life;

[0073] Step 6: Compare the humidity change power SDgl with the corresponding threshold value to determine whether the current humidity needs error compensation;

[0074] The calculation method of humidity change power SDgl is as follows:

[0075] SDgl=SLB*SYB

[0076] When the humidity change power SDgl is greater than the humidity change power threshold, it means that the current humidity needs to be compensated for the corresponding error.

[0077] Step 7: If error compensation is required, make corresponding compensation;

[0078] By calculating the humidity change power SDgl and then comparing it with the humidity change power threshold, the charging strategy can be adjusted dynamically. For example, the charging power can be reduced in high humidity to avoid short circuits, and the charging power can be appropriately increased in low humidity to promote chemical reactions. This can not only ensure a more efficient charging process, but also effectively reduce energy loss, improve overall charging efficiency, and improve charging accuracy.

[0079] The above-mentioned charging operation error compensation control system based on a charging pile is based on a charging operation error compensation control method based on a charging pile according to claims 1 to 9, comprising a temperature acquisition module, a humidity acquisition module, an analysis module, a comparison module and a compensation module;

[0080] The temperature acquisition module collects current and voltage data at different temperatures, and composes temperature current sets and temperature voltage sets accordingly and sends them to the analysis module. The humidity acquisition module collects current and voltage data at different humidity, and composes humidity current sets and humidity voltage sets accordingly and sends them to the analysis module. The analysis module calculates the temperature current change value WLB and the temperature voltage change value WYB according to the temperature current set and the temperature voltage set respectively and sends them to the comparison module. The analysis module calculates the humidity current difference SLB and the humidity voltage difference SYB according to the humidity current set and the humidity voltage set respectively and sends them to the comparison module. The comparison module calculates the temperature change power WDgl and the humidity change power SDgl, and compares them according to the corresponding thresholds to determine whether error compensation is required. If error compensation is required, a signal is sent to the compensation module for corresponding compensation.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charging operation error compensation control method based on a charging pile, comprising the following steps, characterized in that: The specific steps are: Step 1: Collect current data at different temperatures and number them to form a temperature current set, collect voltage data at different temperatures and number them to form a temperature voltage set; Step 2: Collect current data under different humidity conditions, and number them to form a humidity current set; collect voltage data under different humidity conditions, and number them to form a humidity voltage set; Step 3, calculating the temperature current change value WLB and the temperature voltage change value WYB respectively according to the temperature current set and the temperature voltage set; Step 4: Calculate the humidity current difference SLB and the humidity voltage difference SYB respectively according to the humidity current set and the humidity voltage set; Step 5: Compare the temperature change power WDgl with the corresponding threshold value to determine whether error compensation is required for the current temperature; Step 6: Compare the humidity change power SDgl with the corresponding threshold value to determine whether the current humidity needs error compensation; Step 7: When it is determined that error compensation is required, perform corresponding compensation.

2. The charging operation error compensation control method based on a charging pile according to claim 1, characterized in that: In step 1, the temperature current set is numbered as follows: The temperature voltage sets are numbered as follows: Said Respectively represent the first temperature current data and the first temperature voltage data in the temperature current set and the temperature voltage set, They represent the last temperature current data and the last temperature voltage data in the temperature current set and the temperature voltage set respectively, wherein the upper right subscript s is the corresponding temperature, and n represents that there are n collected data in each data set.

3. The charging operation error compensation control method based on a charging pile according to claim 1, characterized in that: In step 2, the humidity current set is numbered as follows: The humidity voltage sets are numbered as follows: Said Respectively represent the first humidity current data and the first humidity voltage data in the humidity current set and humidity voltage set, the They represent the last humidity current data and the last humidity voltage data in the humidity current set and humidity voltage set respectively, where the upper right subscript h is the corresponding humidity, and n represents that there are n collected data in each data set.

4. The charging operation error compensation control method based on a charging pile according to claim 2, characterized in that: In step 3, the calculation formula of the temperature current change value WLB is as follows: In the above formula, Represents the difference between any value in the humidity current concentration and the value before any value, Represents the humidity current concentration, starting from i=2, the sum of the differences between any value and the previous value of any value, and n-1 represents the total number of groups of value differences in the temperature current concentration.

5. The charging operation error compensation control method based on a charging pile according to claim 2, characterized in that: In step 3, the calculation formula of the temperature voltage change value WYB is as follows: In the above formula, Represents the difference between any value in the temperature voltage set and the value before any value. It represents the sum of the differences between any value and the previous value of any value in the temperature voltage set, starting from i=2, and n-1 represents the total number of groups of value differences in the temperature voltage set.

6. The charging operation error compensation control method based on a charging pile according to claim 3 is characterized in that: In step 4, the calculation formula of the humidity current difference SLB is as follows: In the above formula, Represents the humidity current concentration current humidity current, SL α represents the humidity current under standard conditions, and ω is the weighted influence of the current in humidity.

7. The charging operation error compensation control method based on a charging pile according to claim 3 is characterized in that: In step 4, the calculation formula of the humidity voltage difference SYB is as follows: In the above formula, Represents the current humidity voltage in the humidity voltage concentration, SL α Represents the humidity voltage under standard conditions, is the weighted effect of humidity on voltage.

8. A charging operation error compensation control method based on a charging pile according to claims 4 and 5, characterized in that: In step 5, the temperature change power WDgl is calculated as follows: WDgl=WLB*WYB*τ In the above formula, τ is the weighted effect of power under the influence of temperature. When the temperature change power WDgl is greater than the temperature change power threshold, it means that the current temperature needs to be compensated for the corresponding error.

9. A charging operation error compensation control method based on a charging pile according to claims 6 and 7, characterized in that: In step 6, the calculation method of humidity change power SDgl is as follows: SDgl=SLB*SYB When the humidity change power SDgl is greater than the humidity change power threshold, it means that the current humidity needs corresponding error compensation.

10. A charging operation error compensation control system based on a charging pile, based on the charging operation error compensation control method based on a charging pile according to claims 1 to 9, characterized in that: It includes temperature acquisition module, humidity acquisition module, analysis module, comparison module and compensation module; The temperature acquisition module collects current and voltage data at different temperatures, and composes a temperature current set and a temperature voltage set accordingly and sends them to the analysis module. The humidity acquisition module collects current and voltage data at different humidity, and composes a humidity current set and a humidity voltage set accordingly and sends them to the analysis module. The analysis module calculates the temperature current change value WLB and the temperature voltage change value WYB according to the temperature current set and the temperature voltage set respectively and sends them to the comparison module. The analysis module calculates the humidity current difference SLB and the humidity voltage difference SYB according to the humidity current set and the humidity voltage set respectively and sends them to the comparison module. The comparison module calculates the temperature change power WDgl and the humidity change power SDgl, and compares them according to the corresponding threshold value to determine whether error compensation is required. If error compensation is required, a signal is sent to the compensation module for corresponding compensation.

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