High-power charging pile heat dissipation device based on phase change material and control method

Abstract

The invention discloses a high-power charging pile heat dissipation device based on a phase change material and a control method, relates to the field of charging piles, and solves the problem that an existing high-power charging pile heat dissipation device is poor in heat dissipation effect. The power monitoring module is used for carrying out time-period equipment power monitoring on each charging port, obtaining the time-period peak power rising rate corresponding to the sample power charging pile according to the monitoring result, and sending the time-period peak power rising rate to the charging pile charging pile according to the time-period peak power rising rate. The heat dissipation control module is used for conducting heat dissipation control on the sample charging pile according to the time period peak value power rising rate and the time period peak value temperature rising rate, the heat dissipation efficiency of the charging pile heat dissipation device is improved, and the charging safety of the charging pile is improved.

Description

Technical Field

[0001] The present invention belongs to the field of charging piles and relates to thermal management technology, specifically to a high-power charging pile heat dissipation device and control method based on phase change materials. Background Art

[0002] Existing high-power charging pile heat dissipation devices have the following specific defects when performing heat dissipation control: 1. Existing high-power charging pile heat dissipation devices are unable to monitor the device temperature and charging power of each charging port periodically, and are unable to provide feedback on the peak power increase rate and peak temperature increase rate during each period based on the monitoring results. This can easily lead to a lack of accuracy and comprehensiveness in the charging indicator monitoring process. 2. The existing high-power charging pile heat dissipation device is unable to switch the heat dissipation mode of the sample charging pile according to the peak power increase rate and the peak temperature increase rate of the period, resulting in low heat dissipation efficiency of the charging pile.

[0003] To this end, we propose a high-power charging pile heat dissipation device and control method based on phase change materials. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a high-power charging pile heat dissipation device and control method based on phase change materials. The present invention aims to improve the heat dissipation efficiency of the high-power charging pile and enhance charging safety.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a high-power charging pile heat dissipation device based on phase change material, characterized by comprising: Temperature monitoring module: obtains the charging port to which the sample charging pile is connected, monitors the device temperature of each charging port periodically, and obtains the peak temperature rise rate of the charging pile corresponding to the sample power charging pile based on the monitoring results; Power monitoring module: obtains the charging port to which the sample charging pile is connected, monitors the device power of each charging port in a periodic manner, and obtains the peak power increase rate of the sample power charging pile in the period corresponding to the monitoring results; Heat dissipation control module: controls the heat dissipation of the sample charging pile according to the peak power increase rate and the peak temperature increase rate of the time period.

[0006] Furthermore, the peak temperature rise rate of each period is obtained as follows: Selecting a sample charging pile from a plurality of high-power charging piles installed at the charging station, acquiring a charging port connected to the sample charging pile to obtain a plurality of charging ports, and selecting a sample charging port from the acquired plurality of charging ports; Monitor the device charging temperature of the sample charging port and obtain the peak temperature rise rate of the sample charging port corresponding to the time period based on the monitoring results; Repeat the process of obtaining the peak temperature rise rate of the time period corresponding to the sample charging port, obtain the peak temperature rise rate of the time period corresponding to each charging port respectively, and compare the numerical values of the obtained multiple peak temperature rise rates, and mark the peak temperature rise rate of the time period with the largest value as the charging pile peak temperature rise rate.

[0007] Furthermore, the peak temperature rise rate of each period is obtained as follows: In the process of monitoring the device charging temperature of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first temperature characteristic time point, the time point corresponding to the current moment is marked as the second temperature characteristic time point, and the period between the first temperature characteristic time point and the second temperature characteristic time point is marked as the port temperature monitoring period; Determine the stage temperature index for the port temperature monitoring period and obtain the temperature values of the first stage to the temperature values of the a stage; The temperature rise rate of the port temperature monitoring period is analyzed based on the temperature values of the first stage to the temperature values of the a stage, and the corresponding peak temperature rise rate of the period is obtained according to the analysis results.

[0008] Furthermore, the temperature values from the first stage to the a stage are obtained, as follows: During the temperature monitoring of the sample charging port, a port heat dissipation reference temperature is set, and the port temperature values of the sample charging port within the port temperature monitoring period are respectively acquired in real time. The period in which the real-time port temperature value is greater than the port heat dissipation reference temperature is intercepted to obtain the port temperature interception period; During the temperature monitoring of the sample charging port during the port temperature interception period, the port temperature value corresponding to the sample charging is obtained in real time, and the port temperature value with the largest value is marked as the peak temperature value of the period, and the port temperature value with the smallest value is marked as the valley temperature value of the period; Set a temperature index rising characteristic value, mark the sum of the port heat dissipation baseline temperature and the temperature index rising characteristic value as the first stage temperature value, mark the sum of the first stage temperature value and the temperature index rising characteristic value as the second stage temperature value, and so on. The sum of the a-1 stage temperature value and the temperature index rising characteristic value is marked as the a stage temperature value.

[0009] Furthermore, the peak temperature rise rate of each period is obtained as follows: During the port temperature monitoring period, the port temperature value corresponding to the sample charging port is obtained in real time. The time point when the port temperature value reaches the first stage temperature value is marked as the first stage temperature time point, and the time point when the port temperature value reaches the second stage temperature value is marked as the second stage temperature time point. Similarly, the time point when the port temperature value reaches the a stage temperature value is marked as the a stage temperature time point. The temperature rise rate of the first period is obtained by calculating the temperature time point of the first stage, the temperature time point of the second stage and the temperature index rising characteristic value; Calculate the temperature rise rate during the first period; Repeat the process of obtaining the temperature rise rate of the first period, and obtain the temperature rise rate of each period between two consecutive stage temperature time points from the second stage temperature time point to the a-th stage temperature time point, to obtain the temperature rise rate from the second period to the a-th period; A numerical comparison is performed on the temperature rise rate of the first period to the temperature rise rate of the ath period, and the temperature rise rate of the period with the largest value is marked as the peak temperature rise rate of the period.

[0010] Furthermore, the peak power increase rate of the charging pile is obtained as follows: Monitor the device charging power of the sample charging port and obtain the power increase rate of the sample charging port in the corresponding time period based on the monitoring results; The details are as follows: In the process of monitoring the device charging power of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first power characteristic time point, the time point corresponding to the current moment is marked as the second power characteristic time point, and the period between the first power characteristic time point and the second power characteristic time point is marked as the port power monitoring period; Determine the power index of each stage during the port power monitoring period, and obtain the power values of the first stage to the power values of the b stage; Perform a temperature rise rate analysis on the port power monitoring period based on the power values from the first stage to the power values of the b stage, and obtain the corresponding power rise rate for the period based on the analysis results; Repeat the process of obtaining the power rise rate of the time period corresponding to the sample charging port, obtain the power rise rate of the time period corresponding to each charging port respectively, and compare the numerical values of the obtained power rise rates of multiple time periods, and mark the power rise rate of the time period with the largest value as the peak power rise rate of the charging pile.

[0011] Furthermore, the power values from the first stage to the b stage are obtained, as follows: During the power monitoring of the sample charging port, a port heat dissipation reference power is set, and the port power values of the sample charging port within the port power monitoring period are respectively acquired in real time. The period in which the real-time port power value is greater than the port heat dissipation reference power is intercepted to obtain the port power interception period; During the power monitoring of the sample charging ports during the port power interception period, the port power values corresponding to the sample charging are obtained in real time, and the port power value with the largest value is marked as the peak power value of the period, and the port power value with the smallest value is marked as the valley power value of the period; Set a power index increase characteristic value, mark the sum of the port heat dissipation baseline power and the power index increase characteristic value as the first stage power value, mark the sum of the first stage power value and the power index increase characteristic value as the second stage power value, and so on. The sum of the b-1 stage power value and the power index increase characteristic value is marked as the b stage power value; The temperature rise rate of the port power monitoring period is analyzed according to the power values of the first stage to the power values of the b stage, and the power rise rate of the corresponding period is obtained according to the analysis result.

[0012] Furthermore, the power rise rate of the time period is obtained as follows: During the port power monitoring period, the port power values corresponding to the sample charging ports are obtained in real time. The time point when the port power value reaches the first stage power value is marked as the first stage power time point. The time point when the port power value reaches the second stage power value is marked as the second stage power time point. Similarly, the time point when the port power value reaches the b stage power value is marked as the b stage power time point. The power increase rate of the first period is obtained by calculating the power time point of the first stage, the power time point of the second stage and the power index increase characteristic value; Calculating the power rise rate during the first period; Repeat the process of obtaining the power rise rate of the first period, and obtain the power rise rate of the period between each two consecutive power time points from the second stage power time point to the b-th stage power time point, to obtain the power rise rate from the second period to the b-th period; Perform a numerical comparison of the power increase rate from the first period to the power increase rate from the bth period, and mark the period power increase rate with the largest value as the period power increase rate.

[0013] Furthermore, the heat dissipation control of the sample charging pile is obtained as follows: Obtain the peak power increase rate and the peak temperature increase rate of the charging pile respectively, and obtain the power increase rate reference interval and the temperature increase rate reference interval respectively; If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform fan cooling; If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation; If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation; If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation.

[0014] A high-power charging pile heat dissipation control method includes: Step S1: Obtain the charging ports to which the sample charging pile is connected, perform periodic device temperature monitoring on each charging port, and obtain the peak temperature rise rate of the charging pile corresponding to the sample power charging pile based on the monitoring results; Step S2: Acquire the charging ports to which the sample charging pile is connected, monitor the device power of each charging port over a period of time, and obtain the peak power increase rate of the sample power charging pile corresponding to the period based on the monitoring results; Step S3: Control the heat dissipation of the sample charging pile according to the peak power increase rate and the peak temperature increase rate of the time period.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present invention monitors the device temperature and charging power of each charging port periodically, and provides feedback on the peak power increase rate and peak temperature increase rate during each period based on the monitoring results, thereby improving the accuracy and comprehensiveness of the charging indicator monitoring process. 2. The present invention switches the heat dissipation mode of the sample charging pile by obtaining the peak power increase rate and the peak temperature increase rate of the time period, which can improve the heat dissipation efficiency of the charging pile and improve the charging safety of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0017] Figure 1 is a block diagram of the overall system of the present invention; Figure 2 It is a diagram of the implementation steps of the present invention. DETAILED DESCRIPTION

[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1 See also Figure 1 The present invention provides a technical solution: the heat dissipation control method of the present invention belongs to thermal management technology, and the high-power charging pile heat dissipation device based on phase change material includes a temperature monitoring module, a power monitoring module, a heat dissipation control module and a server. The temperature monitoring module, the power monitoring module and the heat dissipation control module are respectively connected to the server, and the server respectively controls the temperature monitoring module, the power monitoring module and the heat dissipation control module; The temperature monitoring module obtains the charging port to which the sample charging pile is connected, performs periodic device temperature monitoring on each charging port, and obtains the peak temperature rise rate of the charging pile corresponding to the sample power charging pile based on the monitoring results; The details are as follows: Selecting a sample charging pile from a plurality of high-power charging piles installed at the charging station, acquiring a charging port connected to the sample charging pile to obtain a plurality of charging ports, and selecting a sample charging port from the acquired plurality of charging ports; It should be noted here that: In this application, the sample charging piles involved here include two methods of fan heat dissipation and phase change heat dissipation; In this application, the sample charging pile involved here is the heat dissipation object corresponding to the heat dissipation device in the present invention; In this application, the charging port involved here is specifically a charging gun of a high-power charging pile in a charging working state.

[0020] Monitor the device charging temperature of the sample charging port and obtain the peak temperature rise rate of the sample charging port corresponding to the time period based on the monitoring results; The details are as follows: In the process of monitoring the device charging temperature of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first temperature characteristic time point, the time point corresponding to the current moment is marked as the second temperature characteristic time point, and the period between the first temperature characteristic time point and the second temperature characteristic time point is marked as the port temperature monitoring period; Determine the stage temperature index for the port temperature monitoring period and obtain the temperature values of the first stage to the temperature values of the a stage; The details are as follows: During the temperature monitoring of the sample charging port, a port heat dissipation reference temperature is set, and the port temperature values of the sample charging port within the port temperature monitoring period are respectively acquired in real time. The period in which the real-time port temperature value is greater than the port heat dissipation reference temperature is intercepted to obtain the port temperature interception period; It should be noted here that: The port heat dissipation reference temperature involved here is specifically the temperature threshold at which the sample charging port needs to turn on the heat dissipation function. If the port temperature value is greater than the port heat dissipation reference temperature, the sample charging pile needs to turn on heat dissipation. The port heat dissipation reference temperature involved here is specifically 65 degrees Celsius.

[0021] During the temperature monitoring of the sample charging port during the port temperature interception period, the port temperature value corresponding to the sample charging is obtained in real time, and the port temperature value with the largest value is marked as the peak temperature value of the period, and the port temperature value with the smallest value is marked as the valley temperature value of the period; Set a temperature index rising characteristic value, mark the sum of the port heat dissipation baseline temperature and the temperature index rising characteristic value as the first stage temperature value, mark the sum of the first stage temperature value and the temperature index rising characteristic value as the second stage temperature value, and so on. The sum of the temperature value of the a-1 stage and the temperature index rising characteristic value is marked as the temperature value of the a stage; It should be noted here that: In this application, a referred to herein is a numerical value corresponding to the stage temperature value, and a is an integer greater than 0; Perform a temperature rise rate analysis on the port temperature monitoring period based on the temperature values from the first stage to the temperature values of the a stage, and obtain the corresponding peak temperature rise rate of the period based on the analysis results; The details are as follows: During the port temperature monitoring period, the port temperature value corresponding to the sample charging port is obtained in real time. The time point when the port temperature value reaches the first stage temperature value is marked as the first stage temperature time point, and the time point when the port temperature value reaches the second stage temperature value is marked as the second stage temperature time point. Similarly, the time point when the port temperature value reaches the a stage temperature value is marked as the a stage temperature time point. The temperature rise rate of the first period is obtained by calculating the temperature time point of the first stage, the temperature time point of the second stage and the temperature index rising characteristic value; Calculate the temperature rise rate in the first period. The specific formula is as follows: ; Wherein, Swl1 is the temperature rising rate in the first period, Wzz is the characteristic value of the temperature index rising, Jd1 is the time value corresponding to the temperature time point in the first stage, and Jd2 is the time value corresponding to the temperature time point in the second stage; Repeat the process of obtaining the temperature rise rate of the first period, and obtain the temperature rise rate of each period between two consecutive stage temperature time points from the second stage temperature time point to the a-th stage temperature time point, to obtain the temperature rise rate from the second period to the a-th period; Compare the temperature rise rates of the first period to the temperature rise rates of the ath period, and mark the temperature rise rate of the period with the largest value as the peak temperature rise rate of the period; Repeat the process of obtaining the peak temperature rise rate for each charging port, obtain the peak temperature rise rate for each charging port, and compare the values of the obtained peak temperature rise rates. Mark the peak temperature rise rate for the charging station with the largest value as the peak temperature rise rate of the charging station. The temperature monitoring module obtains the peak temperature rise rate during the period and transmits it to the heat dissipation control module; The power monitoring module obtains the charging port to which the sample charging pile is connected, monitors the device power of each charging port in a periodic manner, and obtains the peak power increase rate of the sample power charging pile in the period corresponding to the monitoring results; The details are as follows: Monitor the device charging power of the sample charging port and obtain the power increase rate of the sample charging port in the corresponding time period based on the monitoring results; The details are as follows: In the process of monitoring the device charging power of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first power characteristic time point, the time point corresponding to the current moment is marked as the second power characteristic time point, and the period between the first power characteristic time point and the second power characteristic time point is marked as the port power monitoring period; Determine the power index of each stage during the port power monitoring period, and obtain the power values of the first stage to the power values of the b stage; The details are as follows: During the power monitoring of the sample charging port, a port heat dissipation reference power is set, and the port power values of the sample charging port within the port power monitoring period are respectively acquired in real time. The period in which the real-time port power value is greater than the port heat dissipation reference power is intercepted to obtain the port power interception period; It should be noted here that: The port heat dissipation reference power involved here is specifically the power threshold at which the sample charging port needs to turn on the heat dissipation function. If the port power value is greater than the port heat dissipation reference power, the sample charging pile needs to turn on heat dissipation. The port heat dissipation reference power involved here is specifically 40kwh.

[0022] During the power monitoring of the sample charging ports during the port power interception period, the port power values corresponding to the sample charging are obtained in real time, and the port power value with the largest value is marked as the peak power value of the period, and the port power value with the smallest value is marked as the valley power value of the period; Set a power index increase characteristic value, mark the sum of the port heat dissipation baseline power and the power index increase characteristic value as the first stage power value, mark the sum of the first stage power value and the power index increase characteristic value as the second stage power value, and so on. The sum of the b-1 stage power value and the power index increase characteristic value is marked as the b stage power value; It should be noted here that: In this application, b referred to herein is a numerical value corresponding to the stage power value, and b is an integer greater than 0; Perform a temperature rise rate analysis on the port power monitoring period based on the power values from the first stage to the power values of the b stage, and obtain the corresponding power rise rate for the period based on the analysis results; The details are as follows: During the port power monitoring period, the port power values corresponding to the sample charging ports are obtained in real time. The time point when the port power value reaches the first stage power value is marked as the first stage power time point. The time point when the port power value reaches the second stage power value is marked as the second stage power time point. Similarly, the time point when the port power value reaches the b stage power value is marked as the b stage power time point. The power increase rate of the first period is obtained by calculating the power time point of the first stage, the power time point of the second stage and the power index increase characteristic value; Calculate the power rise rate in the first period. The specific formula is as follows:

[0023] ; Wherein, Gwl1 is the power rising rate in the first period, Gzz is the power index rising characteristic value, Gd1 is the time value corresponding to the power time point in the first stage, and Gd2 is the time value corresponding to the power time point in the second stage; Repeat the process of obtaining the power rise rate of the first period, and obtain the power rise rate of the period between each two consecutive power time points from the second stage power time point to the b-th stage power time point, to obtain the power rise rate from the second period to the b-th period; Compare the power increase rates from the first period to the power increase rates from the bth period, and mark the period power increase rate with the largest value as the period power increase rate; Repeat the process of obtaining the power rise rate for each time period corresponding to the sample charging port, obtain the power rise rate for each time period corresponding to each charging port, and compare the values of the power rise rates for multiple time periods obtained. Mark the power rise rate for the time period with the largest value as the peak power rise rate for that time period; The heat dissipation control module controls the heat dissipation of the sample charging pile according to the peak power increase rate and the peak temperature increase rate of the charging pile; The details are as follows: Obtain the peak power increase rate and the peak temperature increase rate of the charging pile respectively, and obtain the power increase rate reference interval and the temperature increase rate reference interval respectively; It should be noted here that: The power increase rate reference interval and the temperature increase rate reference interval are obtained as follows: Obtain historical working data corresponding to the sample charging piles, obtain working periods of several sample charging piles in a phase change heat dissipation state based on the historical working data, and obtain multiple fan heat dissipation periods; Obtain the charging pile power rise rate corresponding to each fan cooling period respectively, and compare the numerical values of the obtained multiple charging pile power rise rates. Mark the charging pile power rise rate with the smallest value as the lower limit of the power rise rate benchmark interval, and mark the charging pile power rise rate with the largest value as the lower limit of the power rise rate benchmark interval to obtain the power rise rate benchmark interval; Obtain the charging pile temperature rise rate corresponding to each fan cooling period respectively, and compare the numerical values of the obtained multiple charging pile temperature rise rates. Mark the charging pile temperature rise rate with the smallest value as the lower limit of the heating rate reference interval, and mark the charging pile temperature rise rate with the largest value as the lower limit of the heating rate reference interval to obtain the heating rate reference interval; If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform fan cooling; If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation; If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation; If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation.

[0024] It should be noted here that: The core principle of phase change heat dissipation in this application is to utilize the latent heat absorbed or released by a phase change material when it undergoes a phase change at a specific temperature. In a charging station, when the temperature exceeds the melting point of the phase change material, the phase change material changes from solid to liquid, absorbing a large amount of heat, thereby reducing the temperature inside the charging station.

[0025] In this application, if a corresponding calculation formula appears, the above calculation formula is dimensionless and its numerical calculation is performed. The weight coefficient, proportional coefficient and other coefficients in the formula are set to a result value obtained by quantifying each parameter. Regarding the size of the weight coefficient and the proportional coefficient, as long as it does not affect the proportional relationship between the parameter and the result value, it is acceptable.

[0026] Example 2 See also Figure 2 Based on another concept of the same invention, a high-power charging pile heat dissipation control method based on phase change materials is proposed, which includes the following steps:

[0027] Step S1: Obtain the charging ports to which the sample charging pile is connected, perform periodic device temperature monitoring on each charging port, and obtain the peak temperature rise rate of the period corresponding to the sample power charging pile based on the monitoring results;

[0028] The step S1 further includes the following specific steps:

[0029] Selecting a sample charging pile from a plurality of high-power charging piles installed at the charging station, acquiring a charging port connected to the sample charging pile to obtain a plurality of charging ports, and selecting a sample charging port from the acquired plurality of charging ports;

[0030] Monitor the device charging temperature of the sample charging port and obtain the peak temperature rise rate of the sample charging port corresponding to the time period based on the monitoring results;

[0031] The details are as follows:

[0032] In the process of monitoring the device charging temperature of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first temperature characteristic time point, the time point corresponding to the current moment is marked as the second temperature characteristic time point, and the period between the first temperature characteristic time point and the second temperature characteristic time point is marked as the port temperature monitoring period;

[0033] Determine the stage temperature index for the port temperature monitoring period and obtain the temperature values of the first stage to the temperature values of the a stage;

[0034] The details are as follows:

[0035] During the temperature monitoring of the sample charging port, a port heat dissipation reference temperature is set, and the port temperature values of the sample charging port within the port temperature monitoring period are respectively acquired in real time. The period in which the real-time port temperature value is greater than the port heat dissipation reference temperature is intercepted to obtain the port temperature interception period;

[0036] During the temperature monitoring of the sample charging port during the port temperature interception period, the port temperature value corresponding to the sample charging is obtained in real time, and the port temperature value with the largest value is marked as the peak temperature value of the period, and the port temperature value with the smallest value is marked as the valley temperature value of the period;

[0037] Set a temperature index rising characteristic value, mark the sum of the port heat dissipation baseline temperature and the temperature index rising characteristic value as the first stage temperature value, mark the sum of the first stage temperature value and the temperature index rising characteristic value as the second stage temperature value, and so on. The sum of the temperature value of the a-1 stage and the temperature index rising characteristic value is marked as the temperature value of the a stage;

[0038] Perform a temperature rise rate analysis on the port temperature monitoring period based on the temperature values from the first stage to the temperature values of the a stage, and obtain the corresponding peak temperature rise rate of the period based on the analysis results;

[0039] The details are as follows:

[0040] During the port temperature monitoring period, the port temperature value corresponding to the sample charging port is obtained in real time. The time point when the port temperature value reaches the first stage temperature value is marked as the first stage temperature time point, and the time point when the port temperature value reaches the second stage temperature value is marked as the second stage temperature time point. Similarly, the time point when the port temperature value reaches the a stage temperature value is marked as the a stage temperature time point.

[0041] The temperature rise rate of the first period is obtained by calculating the temperature time point of the first stage, the temperature time point of the second stage and the temperature index rising characteristic value;

[0042] Calculate the temperature rise rate in the first period. The specific formula is as follows:

[0043] ;

[0044] Wherein, Swl1 is the temperature rising rate in the first period, Wzz is the characteristic value of the temperature index rising, Jd1 is the time value corresponding to the temperature time point in the first stage, and Jd2 is the time value corresponding to the temperature time point in the second stage;

[0045] Repeat the process of obtaining the temperature rise rate of the first period, and obtain the temperature rise rate of each period between two consecutive stage temperature time points from the second stage temperature time point to the a-th stage temperature time point, to obtain the temperature rise rate from the second period to the a-th period;

[0046] Compare the temperature rise rates of the first period to the temperature rise rates of the ath period, and mark the temperature rise rate of the period with the largest value as the peak temperature rise rate of the period;

[0047] Repeat the process of obtaining the peak temperature rise rate for each charging port, obtain the peak temperature rise rate for each charging port, and compare the values of the obtained peak temperature rise rates. Mark the peak temperature rise rate for the period with the largest value as the peak temperature rise rate for the period.

[0048] It should be noted here that:

[0049] In this application, step S1 has the following benefits:

[0050] A sample charging pile and one of its multiple charging ports in the charging station are selected. The temperature monitoring period is determined by marking the start of charging and the current time. The period when the temperature is higher than the heat dissipation reference temperature is intercepted. The temperature values are divided into stages and the temperature rise rate of each stage is calculated. The temperature rise rate of the period with the largest value is found as the peak temperature rise rate of the port during the period. The peak temperature rise rate of the sample charging pile during the period is then determined by combining the conditions of all ports. This provides key reference data for temperature changes for heat dissipation control.

[0051] Step S2: Obtain the charging ports to which the sample charging piles are connected, perform periodic device power monitoring on each charging port, and obtain the peak power increase rate of the charging pile corresponding to the sample power charging pile based on the monitoring results;

[0052] The step S2 further includes the following specific steps:

[0053] Monitor the device charging power of the sample charging port and obtain the power increase rate of the sample charging port in the corresponding time period based on the monitoring results;

[0054] The details are as follows:

[0055] In the process of monitoring the device charging power of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first power characteristic time point, the time point corresponding to the current moment is marked as the second power characteristic time point, and the period between the first power characteristic time point and the second power characteristic time point is marked as the port power monitoring period;

[0056] Determine the power index of each stage during the port power monitoring period, and obtain the power values of the first stage to the power values of the b stage;

[0057] The details are as follows:

[0058] During the power monitoring of the sample charging port, a port heat dissipation reference power is set, and the port power values of the sample charging port within the port power monitoring period are respectively acquired in real time. The period in which the real-time port power value is greater than the port heat dissipation reference power is intercepted to obtain the port power interception period;

[0059] During the power monitoring of the sample charging ports during the port power interception period, the port power values corresponding to the sample charging are obtained in real time, and the port power value with the largest value is marked as the peak power value of the period, and the port power value with the smallest value is marked as the valley power value of the period;

[0060] Set a power index increase characteristic value, mark the sum of the port heat dissipation baseline power and the power index increase characteristic value as the first stage power value, mark the sum of the first stage power value and the power index increase characteristic value as the second stage power value, and so on. The sum of the b-1 stage power value and the power index increase characteristic value is marked as the b stage power value;

[0061] Perform a temperature rise rate analysis on the port power monitoring period based on the power values from the first stage to the power values of the b stage, and obtain the corresponding power rise rate for the period based on the analysis results;

[0062] The details are as follows:

[0063] During the port power monitoring period, the port power values corresponding to the sample charging ports are obtained in real time. The time point when the port power value reaches the first stage power value is marked as the first stage power time point. The time point when the port power value reaches the second stage power value is marked as the second stage power time point. Similarly, the time point when the port power value reaches the b stage power value is marked as the b stage power time point.

[0064] The power increase rate of the first period is obtained by calculating the power time point of the first stage, the power time point of the second stage and the power index increase characteristic value;

[0065] Calculate the power rise rate in the first period. The specific formula is as follows:

[0066] ;

[0067] Wherein, Gwl1 is the power rising rate in the first period, Gzz is the power index rising characteristic value, Gd1 is the time value corresponding to the power time point in the first stage, and Gd2 is the time value corresponding to the power time point in the second stage;

[0068] Repeat the process of obtaining the power rise rate of the first period, and obtain the power rise rate of the period between each two consecutive power time points from the second stage power time point to the b-th stage power time point, to obtain the power rise rate from the second period to the b-th period;

[0069] Compare the power increase rates from the first period to the power increase rates from the bth period, and mark the period power increase rate with the largest value as the period power increase rate;

[0070] Repeat the process of obtaining the power rise rate for each time period corresponding to the sample charging port, obtain the power rise rate for each time period corresponding to each charging port, and compare the values of the power rise rates for multiple time periods obtained. Mark the power rise rate for the time period with the largest value as the peak power rise rate of the charging pile;

[0071] It should be noted here that:

[0072] In this application, step S2 has the following benefits:

[0073] Mark the start of charging and the current moment to determine the power monitoring period, intercept the period when the power is higher than the heat dissipation benchmark power, divide the power values into stages and calculate the power rise rate of each stage, find the power rise rate of the period with the largest value as the power rise rate of the port period, and comprehensively consider all port conditions to determine the peak power rise rate of the charging pile, which is used to evaluate the operating status of the charging pile in terms of power.

[0074] Step S3: performing heat dissipation control on the sample charging pile according to the peak power increase rate and the peak temperature increase rate of the charging pile;

[0075] The step S3 further includes the following specific steps:

[0076] Obtain the peak power increase rate and the peak temperature increase rate of the charging pile respectively, and obtain the power increase rate reference interval and the temperature increase rate reference interval respectively;

[0077] If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform fan cooling;

[0078] If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation;

[0079] If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation;

[0080] If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation.

[0081] It should be noted here that:

[0082] In this application, step S3 has the following benefits:

[0083] Obtain the charging pile's peak power increase rate and peak temperature increase rate during each period, along with the corresponding benchmark ranges for power increase and temperature increase rates. Select fan cooling or phase change cooling based on whether the peak rate falls within the benchmark range. This precise selection of cooling methods based on different conditions improves cooling efficiency, reduces energy consumption, and ensures safe and stable operation of the charging pile.

[0084] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-power charging pile heat dissipation device based on phase change materials, characterized in that: include: The temperature monitoring module monitors the device temperature of each charging port periodically and obtains the peak temperature rise rate of the charging pile corresponding to the sample power charging pile based on the monitoring results; Power monitoring module: performs periodic device power monitoring on each charging port and obtains the peak power increase rate of the sample power charging pile corresponding to the period based on the monitoring results; Heat dissipation control module: controls the heat dissipation of the sample charging pile according to the peak power increase rate and the peak temperature increase rate of the time period.

2. The high-power charging pile heat dissipation device based on phase change material according to claim 1 is characterized in that: The peak temperature rise rate of each time period is obtained as follows: Selecting a sample charging pile from a plurality of high-power charging piles installed at the charging station, acquiring a charging port connected to the sample charging pile to obtain a plurality of charging ports, and selecting a sample charging port from the acquired plurality of charging ports; Monitor the device charging temperature of the sample charging port and obtain the peak temperature rise rate of the sample charging port corresponding to the time period based on the monitoring results; The peak temperature rise rate of each charging port is obtained respectively, and the peak temperature rise rates of multiple charging ports are compared in numerical value. The peak temperature rise rate of the charging port with the largest value is marked as the peak temperature rise rate of the charging pile.

3. The high-power charging pile heat dissipation device based on phase change material according to claim 2 is characterized in that: The peak temperature rise rate of each time period is obtained as follows: In the process of monitoring the device charging temperature of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first temperature characteristic time point, the time point corresponding to the current moment is marked as the second temperature characteristic time point, and the period between the first temperature characteristic time point and the second temperature characteristic time point is marked as the port temperature monitoring period; Determine the stage temperature index for the port temperature monitoring period and obtain the temperature values of the first stage to the temperature values of the a stage; The temperature rise rate of the port temperature monitoring period is analyzed based on the temperature values of the first stage to the temperature values of the a stage, and the corresponding peak temperature rise rate of the period is obtained according to the analysis results.

4. The high-power charging pile heat dissipation device based on phase change material according to claim 3 is characterized in that: The temperature values from the first stage to the a stage are obtained as follows: During the temperature monitoring of the sample charging port, a port heat dissipation reference temperature is set, and the port temperature values of the sample charging port within the port temperature monitoring period are respectively acquired in real time. The period in which the real-time port temperature value is greater than the port heat dissipation reference temperature is intercepted to obtain the port temperature interception period; During the temperature monitoring of the sample charging port during the port temperature interception period, the port temperature value corresponding to the sample charging is obtained in real time, and the port temperature value with the largest value is marked as the peak temperature value of the period, and the port temperature value with the smallest value is marked as the valley temperature value of the period; A temperature index rise characteristic value is set, and the sum of the port heat dissipation baseline temperature and the temperature index rise characteristic value is marked as the first stage temperature value. Similarly, the sum of the a-1 stage temperature value and the temperature index rise characteristic value is marked as the a stage temperature value.

5. The high-power charging pile heat dissipation device based on phase change material according to claim 3 is characterized in that: The peak temperature rise rate of each time period is obtained as follows: During the port temperature monitoring period, the port temperature value corresponding to the sample charging port is obtained in real time. The time point when the port temperature value reaches the first stage temperature value is marked as the first stage temperature time point, and the time point when the port temperature value reaches the a stage temperature value is marked as the a stage temperature time point; Calculate the temperature rise rate during the first period; The temperature rise rate of each period between two consecutive stage temperature time points from the second stage temperature time point to the a-th stage temperature time point is obtained to obtain the temperature rise rate of the second period to the a-th period temperature rise rate; A numerical comparison is performed on the temperature rise rate of the first period to the temperature rise rate of the ath period, and the temperature rise rate of the period with the largest value is marked as the peak temperature rise rate of the period.

6. The high-power charging pile heat dissipation device based on phase change material according to claim 1 is characterized in that: The peak power increase rate of the charging pile is obtained as follows: Monitor the device charging power of the sample charging port and obtain the power increase rate of the sample charging port in the corresponding time period based on the monitoring results; The details are as follows: In the process of monitoring the device charging power of the sample charging port, the time point when the charging port is connected to the power-consuming device is marked as the first power characteristic time point, the time point corresponding to the current moment is marked as the second power characteristic time point, and the period between the first power characteristic time point and the second power characteristic time point is marked as the port power monitoring period; Determine the power index of each stage during the port power monitoring period, and obtain the power values of the first stage to the power values of the b stage; Perform a temperature rise rate analysis on the port power monitoring period based on the power values from the first stage to the power values of the b stage, and obtain the corresponding power rise rate for the period based on the analysis results; Repeat the process of obtaining the power rise rate of each time period, obtain the power rise rate of each time period corresponding to each charging port, and compare the numerical values of the obtained power rise rates of multiple time periods. Mark the power rise rate of the time period with the largest value as the peak power rise rate of the charging pile.

7. The high-power charging pile heat dissipation device based on phase change material according to claim 6, characterized in that: The power values from the first stage to the b stage are obtained as follows: During the power monitoring of the sample charging port, a port heat dissipation reference power is set, and the port power values of the sample charging port within the port power monitoring period are respectively acquired in real time. The period in which the real-time port power value is greater than the port heat dissipation reference power is intercepted to obtain the port power interception period; During the power monitoring of the sample charging ports during the port power interception period, the port power values corresponding to the sample charging are obtained in real time, and the port power value with the largest value is marked as the peak power value of the period, and the port power value with the smallest value is marked as the valley power value of the period; Set a power index increase characteristic value, mark the sum of the port heat dissipation baseline power and the power index increase characteristic value as the first stage power value, and so on, mark the sum of the b-1 stage power value and the power index increase characteristic value as the b stage power value; The temperature rise rate of the port power monitoring period is analyzed according to the power values of the first stage to the power values of the b stage, and the power rise rate of the corresponding period is obtained according to the analysis result.

8. The high-power charging pile heat dissipation device based on phase change material according to claim 7 is characterized in that: Get the power rise rate of the time period, as follows: During the port power monitoring period, the port power values corresponding to the sample charging ports are obtained in real time. The time point when the port power value reaches the first stage power value is marked as the first stage power time point. Similarly, the time point when the port power value reaches the b stage power value is marked as the b stage power time point. The power increase rate of the first period is obtained by calculating the power time point of the first stage, the power time point of the second stage and the power index increase characteristic value; Calculating the power rise rate during the first period; Obtain the power increase rate of the period between each two consecutive power time points from the second stage power time point to the b-th stage power time point, and obtain the power increase rate of the second period to the b-th period; Perform a numerical comparison of the power increase rate from the first period to the power increase rate from the bth period, and mark the period power increase rate with the largest value as the period power increase rate.

9. The high-power charging pile heat dissipation device based on phase change material according to claim 1, characterized in that: The heat dissipation control of the sample charging pile is obtained as follows: Obtain the peak power increase rate and the peak temperature increase rate of the charging pile respectively, and obtain the power increase rate reference interval and the temperature increase rate reference interval respectively; If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform fan cooling; If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation; If the peak power increase rate of the charging pile is within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation; If the peak power increase rate of the charging pile is not within the power increase rate reference range, and the peak temperature increase rate of the charging pile is not within the temperature increase rate reference range, the sample charging pile is controlled to perform phase change heat dissipation.

10. A high-power charging pile heat dissipation control method, applicable to the high-power charging pile heat dissipation control device according to any one of claims 1 to 9, characterized in that: The control method comprises: Step S1: Performing periodic device temperature monitoring on each charging port, and obtaining the peak temperature rise rate of the charging pile corresponding to the sample power charging pile based on the monitoring results; Step S2: Monitor the device power of each charging port in a periodic manner, and obtain the peak power increase rate of the sample power charging pile corresponding to the period based on the monitoring results; Step S3: Control the heat dissipation of the sample charging pile according to the peak power increase rate and the peak temperature increase rate of the time period.

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