A charging control method and a charging pile

Abstract

This application relates to the technical field of charging pile charging, and discloses a charging control method applied to a charging pile. The method includes: obtaining the inlet air temperature T of the charging pile a , the original output power W0 of the charging pile, and the altitude H of the location where the charging pile is located; determining the first derating coefficient m1 of the charging pile according to the inlet air temperature T a and the altitude H, where 0 ≤ m1 ≤ 1; regulating the actual output power W of the charging pile according to the first derating coefficient m1 and the original output power W0; controlling the charging pile to output power according to the actual output power W; wherein, the determination formula of the first derating coefficient m1 is: m1 = (T a -T1)(H - H1) / a, T1 ≤ T a , H1 ≤ H; the determination formula of the actual output power W is: W = (1 - m1)W0; in the formula, T1 is the first temperature threshold, H1 is the first height threshold, and a is a constant coefficient. Through the above method, this application ensures the safety of charging piles in high-altitude areas during charging.

Description

Technical Field

[0001] This application relates to the technical field of charging pile charging control, and particularly relates to a charging control method and a charging pile. Background Art

[0002] As the altitude increases, the air density decreases and the temperature drops. Such an environment brings many adverse effects to the operation of electronic devices, and the heat dissipation effect and load-carrying capacity of the charging pile are also greatly weakened.

[0003] Currently, most domestic charging pile designs consider normal operation within the range below 2000 meters above sea level, and there is little intelligent control for charging derating at high altitudes.

[0004] However, China has a vast territory, and the altitude gradually increases from east to west. Many regions exceed 2000 meters above sea level. Considering the all-region development in China and the popularization of electric vehicles, charging at high altitudes will also become normal. Due to the relatively low temperature all year round in high-altitude regions, it is not conducive to the operation of electronic devices. Therefore, how to ensure the charging safety of charging piles in high-altitude regions has become a technical problem to be solved urgently. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide a charging control method and a charging pile, which are used to solve the problem of relatively low charging safety of charging piles in high-altitude regions existing in the prior art.

[0006] According to one aspect of the embodiments of the present application, a charging control method is provided, which is applied to a charging pile. The charging control method includes: obtaining the inlet air temperature T of the charging pile a , the original output power W0 of the charging pile, and the altitude H of the location where the charging pile is located; determining the first derating coefficient m1 of the charging pile according to the inlet air temperature T a and the altitude H, where 0 ≤ m1 ≤ 1; regulating the actual output power W of the charging pile according to the first derating coefficient m1 and the original output power W0; controlling the charging pile to output power according to the actual output power W; where the determination formula of the first derating coefficient m1 is: m1 = (T a - T1)(H - H1) / a, T1 ≤ T a , H1 ≤ H; the determination formula of the actual output power W is: W = (1 - m1)W0; in the formula, T1 is the first temperature threshold, H1 is the first height threshold, and a is a constant coefficient.

[0007] Preferably, when determining the first derating coefficient m1 according to the inlet air temperature T aBefore determining the first derating factor m1 of the charging pile based on the inlet air temperature T and the altitude H, the charging control method further includes: obtaining a second height threshold H2; determining the magnitude relationship between the altitude H and the first height threshold H1 and the second height threshold H2 respectively; if the relationship H > H2 holds, setting the actual output power W to 0; based on the inlet air temperature T a and the altitude H to determine the first derating factor m1 of the charging pile, including: if the relationship H1 ≤ H ≤ H2 holds, then based on the inlet air temperature T a and the altitude H to determine the first derating factor m1 of the charging pile.

[0008] Preferably, before regulating the actual output power W of the charging pile according to the first derating factor m1 and the original output power W0 of the charging pile, the charging control method further includes: based on the inlet air temperature T a to determine the second derating factor m2 of the charging pile; determining the magnitude relationship between the first derating factor m1 and the second derating factor m2; if the relationship m1 ≤ m2 holds, then regulating and determining the actual output power W of the charging pile according to the second derating factor m2 and the original output power W0, and controlling the charging pile to output power according to the actual output power W; based on the inlet air temperature T a and the altitude H to determine the first derating factor m1 of the charging pile, including: if the relationship m1 > m2 holds, then based on the inlet air temperature T a and the altitude H to determine the first derating factor m1 of the charging pile; wherein, the determination formula of the second derating factor m2 is: m2 = (T a - T2) / (T3 - T2), T2 ≤ T a ; the determination formula of the actual output power W is: W = (1 - m2)W0; T3 is the third temperature threshold, T2 is the second temperature threshold, and the second temperature threshold T2 is greater than the first temperature threshold T1.

[0009] Preferably, if the relationship m1 ≤ m2 holds, then regulating the actual output power W of the charging pile according to the second derating factor m2 and the original output power W0 further includes: if the relationship m1 ≤ m2 holds, obtaining the third temperature threshold T3, and determining the magnitude relationship between the inlet air temperature T a and the second temperature threshold T2 and the third temperature threshold T3 respectively, wherein the third temperature threshold T3 is greater than the second temperature threshold T2; if the relationship T a > T3 holds, setting the actual output power W to 0; if the relationship T2 ≤ T a ≤ T3 holds, then regulating the actual output power W of the charging pile according to the second derating factor m2 and the original output power W0.

[0010] Preferably, before determining the magnitude relationship between the first derating factor m1 and the second derating factor m2, the charging control method further includes: reading the temperature T of the previous air inlet obtained by the charging pile last time b and the fourth temperature threshold T4, where T2 < T4 < T3; if the relational expression T2 ≤ T a ≤ T3 holds, then according to the second derating factor m2 and the original output power W0, the actual output power W of the charging pile is regulated, and further includes: if the relational expression T3 < T b holds and T4 ≤ T a ≤ T3 holds, then the actual output power W is set to 0; if the relational expression T b ≤ T3 holds or T2 ≤ T a < T4 holds, then according to the second derating factor m2 and the original output power W0, the actual output power W of the charging pile is regulated.

[0011] Preferably, the charging control method further includes: obtaining the internal temperature T of the charging pile c 、the fifth temperature threshold T5 and the sixth temperature threshold T6, where T1 < T5 < T6 < T3; judging the magnitude relationship between the internal temperature T c and the fifth temperature threshold T5 and the sixth temperature threshold T6 respectively; if the relational expression T c = T5 holds, then control the heat dissipation component of the charging pile to operate in the initial power state; if the relational expression T5 < T c < T6 holds, then control the heat dissipation component of the charging pile to operate at a power state greater than the initial power; if the relational expression T6 ≤ T c holds, then control the heat dissipation component of the charging pile to operate at the full power state.

[0012] Preferably, after judging the magnitude relationship between the internal temperature T c and the fifth temperature threshold T5 and the sixth temperature threshold T6 respectively, the charging control method further includes: if the relational expression T c < T5 holds, then control the heat dissipation component of the charging pile to be in the sleep state; the charging control method further includes: detecting the working state of the charging pile, if the charging pile is not in the charging state, then control the heat dissipation component of the charging pile to be in the sleep state.

[0013] Preferably, the charging control method further includes: in response to the startup of the charging pile, obtaining the internal temperature T c 、the seventh temperature threshold T7 and the eighth temperature threshold T8, where T7 < T8 < 0 < T1; judging the magnitude relationship between the internal temperature T c and the seventh temperature threshold T7 and the eighth temperature threshold T8 respectively; if the relational expression T c < T7 holds, then control the heating component of the charging pile to start; if the relational expression T8 < T cIf it holds, control the heating element of the charging pile to stop operating.

[0014] Preferably, the charging control method further includes: obtaining the temperature T of the charging gun of the charging pile d , the first current temperature threshold T e and the second current temperature threshold T f ; judging the magnitude relationship between the charging gun temperature T d and the first current temperature threshold T e and the second current temperature threshold T f respectively; if the relational expression T e <T d <T f holds, then determine the third derating coefficient m3 of the charging pile according to the charging gun temperature T d , regulate the actual output current I of the charging pile according to the third derating coefficient m3 and the original output current I0 of the charging pile, and control the charging pile to output current according to the actual output current I; if the relational expression T d ≤T f holds, then control the charging pile to stop outputting current; wherein, the determination formula of the third derating coefficient m3 is: m3 = b(T d -T e ); the determination formula of the actual output current I is: I = (1 - m3)I0; in the formula, b is a constant coefficient.

[0015] According to another aspect of the embodiments of the present application, a charging pile is provided. The charging pile includes a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the steps of the charging control method described in any one of the above embodiments.

[0016] The embodiments of the present application determine the derating coefficient of the charging pile according to m1 = (T a -T1)(H - H1) / a, and determine the actual output power of the charging pile according to the derating coefficient, so as to consider the non-linear influence of the combined action of altitude and inlet air temperature on the heat dissipation performance of the charging pile, and limit the actual output power of the charging pile based on this influence, thereby improving the safety of charging of the charging pile.

[0017] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Description of the Drawings

[0018] The drawings are only used to illustrate the embodiments and are not considered to be a limitation of the present application. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0019] Figure 1 shows a schematic structural diagram of a charging pile provided by an embodiment of the present application;

[0020] Figure 2 shows a schematic flow diagram of a charging control method provided by an embodiment of the present application;

[0021] Figure 3 shows a schematic flow diagram of a charging control method provided by another embodiment of the present application;

[0022] Figure 4 shows a schematic flow diagram of a charging control method provided by yet another embodiment of the present application;

[0023] Figure 5 shows a schematic structural diagram of a charging control device provided by an embodiment of the present application;

[0024] Figure 6 shows a schematic structural diagram of a charging pile provided by an embodiment of the present application. Detailed Embodiments

[0025] Hereinafter, exemplary embodiments of the present application will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein.

[0026] Figure 1 shows a schematic structural diagram of a charging pile provided by an embodiment of the present application. As Figure 1 shown, the charging pile 1 includes a charging gun 11 and an air inlet 12. Among them, the charging gun 11 is used to connect to the vehicle to be charged and supply power to the vehicle to be charged. The air inlet 12 can be provided on the side of the charging pile 1 as Figure 1 shown, or can also be provided at the bottom of the charging pile 1, and is used to suck in cooler ground air or circulating air to dissipate heat inside the charging pile 1.

[0027] Preferably, the charging pile 1 further includes a printed circuit board assembly, a charging control board, a heating element, and a heat dissipation element.

[0028] Among them, the printed circuit board assembly (PCBA) integrates a processor (CPU, MCU, etc.) and a memory (RAM, ROM, etc.). The PCBA can perform computing, data processing, and storage functions, and the PCBA can be connected to various sensors (such as temperature, humidity, light, pressure sensors, etc.) for detecting environmental parameters or physical states.

[0029] The Charge Control Board (CCB) is responsible for managing and controlling the entire charging process to ensure safe and efficient charging. For example, it monitors key parameters during the charging process in real time, such as voltage, current, temperature, insulation status, etc., to ensure charging safety; it detects abnormal conditions during the charging process, such as overvoltage, undervoltage, overcurrent, short circuit, etc., and quickly takes measures to protect the charging equipment and the electric vehicle.

[0030] There is a communication connection between the PCBA and the CCB, which can be a wireless communication connection, such as Bluetooth, etc., or a wired communication connection, such as an electrical connection through a physical interface to achieve the communication connection.

[0031] Among them, the heating element can be a heating wire (heating rod), a positive temperature coefficient thermistor (PTC) heater, a heating plate, a hot air heater, etc.

[0032] The heat dissipation component can be a heat sink, a fan, a radiator, a liquid cooling system, etc. In the following, the example of selecting a fan as the heat dissipation component is used to illustrate the embodiments of the present application.

[0033] The PCBA is electrically connected to the heating element and the heat dissipation component respectively to control the operating power of the heating element and the heat dissipation component.

[0034] Figure 2 The flowchart of the charging control method provided by the embodiments of the present application is shown, and this method is executed by the charging pile 1. Among them, the charging pile 1 can be a slow charging pile, a fast charging pile, a wireless charging pile, an integrated charging pile, a wall-mounted charging pile, etc. As Figure 2 shown, this method includes the following steps:

[0035] S210, obtain the inlet air temperature T of the charging pile a , the original output power W0 of the charging pile and the altitude H of the location where the charging pile is located.

[0036] Through the connection between the PCBA and the CCB and the temperature sensor, the temperature sensor collects the inlet air temperature T at the inlet air port 12 of the charging pile 1 a , and sends the collected temperature value to the PCBA and the CCB, so that the PCBA and the CCB can run the control logic based on the inlet air temperature T a value to ensure the safety of charging of the charging pile 1.

[0037] Among them, the original output power W0 can be the rated output power pre-stored in the memory of the PCBA. Preferably, the fifth temperature threshold T5 is 40 °C, and the sixth temperature threshold T6 is 55 °C; the altitude H can be a preset input value, a real-time input value, or a value collected by a height sensor.

[0038] S220, according to the inlet air temperature Ta and the altitude H to determine the first derating factor m1 of the charging pile, where 0 ≤ m1 ≤ 1, and the determination formula of the first derating factor m1 is: m1 = (T a - T1)(H - H1) / a, where T1 ≤ T a , H1 ≤ H. In the formula, T1 is the first temperature threshold, H1 is the first altitude threshold, and a is a constant coefficient.

[0039] In actual use, it is found that the air pressure at an altitude of 2000 km will start to have a serious impact on the heat dissipation performance of the charging pile 1. And at this time, if the temperature of the air inlet 12 reaches 35 degrees, it indicates that obvious heat accumulation occurs inside the charging pile 1 and the heat is difficult to dissipate. Therefore, it is necessary to limit the output power of the charging pile 1 to avoid further heat accumulation leading to safety problems of the charging pile 1.

[0040] And considering that the influence of the temperature accumulation at the air inlet 12 and the air pressure at the altitude on the heat dissipation performance of the charging pile 1 is not a simple linear superposition relationship. Therefore, the influence of the air inlet temperature T a and the altitude H is comprehensively considered. That is, the first derating factor m1 is determined by the formula m1 = (T a - T1)(H - H1) / a, and the actual output power W of the charging pile 1 is determined according to the first derating factor m1 to strictly ensure the safety of the charging pile 1 when charging in high-altitude areas.

[0041] Preferably, T1 is 35 degrees and H1 is 2000 km; the constant coefficient a can be set according to actual use requirements. For example, a is preset to 1.5% / 2000 to meet the safety requirements of most charging piles.

[0042] S230, regulate the actual output power W of the charging pile according to the first derating factor m1 and the original output power W0, where the confirmation formula of the actual output power W is: W = (1 - m1)W0.

[0043] After determining the first derating factor m1, limit the output power of the charging pile 1 according to the first derating factor to ensure the safety of the charging pile 1 when working in high-altitude areas.

[0044] S240, control the charging pile to output power according to the actual output power W.

[0045] PCBA or CCB controls the charging pile 1 to output power according to the actual output power W.

[0046] In the embodiment of the present application, the first derating factor m1 of the charging pile 1 is determined according to the formula m1 = (T a - T1)(H - H1) / a, and the actual output power W of the charging pile 1 is determined according to the first derating factor m1 to consider the altitude H and the air inlet temperature Ta The non-linear influence on the heat dissipation performance of the charging pile 1 when they act together, and based on this influence, limit the actual output power W of the charging pile 1, so as to strictly ensure the safety of the charging pile 1 when charging in high altitude areas.

[0047] To further consider the influence of the air pressure at ultra-high altitude on the heat dissipation performance of the charging pile 1, Figure 3 The flow schematic diagram of the charging control method provided by another embodiment of the present application is shown, as Figure 3 shown, the method includes the following steps:

[0048] S310, obtain the inlet air temperature T of the charging pile a , the original output power W0 of the charging pile and the altitude H of the location where the charging pile is located.

[0049] S320, obtain the second height threshold H2.

[0050] Preferably, the PCBA reads the pre-stored second height threshold H2 from the memory.

[0051] S330, judge the size relationship between the altitude H and the first height threshold H1 and the second height threshold H2 respectively.

[0052] In actual use, it is found that when the altitude exceeds 4000 km, the external air pressure of the charging pile 1 is relatively large, and at this time the charging pile 1 is not suitable for working. Therefore, preferably, the second height threshold H2 is set to 4000 km.

[0053] S331, if the relation H > H2 holds, set the actual output power W to 0.

[0054] If it is found through comparison that the altitude of the charging pile 1 is greater than the second height threshold H2, it is necessary to stop the power output of the charging pile 1 to avoid damage to the internal components of the charging pile 1 when working in a high-pressure environment, thereby improving the safety of the charging pile 1.

[0055] S332, if the relation H1 ≤ H ≤ H2 holds, determine the first derating factor m1 of the charging pile according to the inlet air temperature T a and the altitude H, and regulate the actual output power W0 of the charging pile according to the first derating factor m1 and the original output power W0.

[0056] S340, control the charging pile to output power according to the actual output power W.

[0057] S310 is similar to S210, S332 is similar to S220, and S340 is similar to S240. Therefore, the execution of S310 can refer to S210, and the execution of S332 can refer to S220, which will not be elaborated here.

[0058] Among them, when executing S330 to S332, the operating condition of the formula m1 = (T a - T1)(H - H1) / a can be supplemented as: T1 ≤ T a , H1 ≤ H ≤ H2, and the actual output power W of the charging pile 1 is determined according to the first derating factor m1; if the relational expression H > H2 holds, the actual output power W of the charging pile 1 is directly set to 0; if the relational expression H < H1 holds, it means that the altitude does not have a relatively serious impact on the heat dissipation performance of the charging pile 1. Therefore, it is not necessary to limit the actual output power of the charging pile 1 according to m1 = (T a - T1)(H - H1) / a.

[0059] In the embodiment of the present application, by judging the magnitude relationship between the altitude H and the first altitude threshold H1 and the second altitude threshold H2 respectively, the charging output power of the charging pile 1 in the ultra-high altitude area is further limited, thereby improving the charging safety of the charging pile 1.

[0060] To fully consider the influence of heat accumulation at the charging pile 1 on the heat dissipation performance of the charging pile 1, Figure 4 shows a schematic flowchart of a charging control method provided by another embodiment of the present application, as Figure 4 shown, the method includes the following steps:

[0061] S410, obtain the inlet air temperature T of the charging pile a , the original output power W0 of the charging pile, and the altitude H of the location where the charging pile is located.

[0062] S420, determine the first derating factor m1 of the charging pile according to the inlet air temperature T a and the altitude H.

[0063] Further, the first derating factor m1 and the second derating factor m2 can be preset to 0 or 1. When the charging pile 1 executes S420, if it is found that H ≤ H1, the value of the first derating factor m1 cannot be determined by the formula m1 = (T a - T1)(H - H1) / a. Therefore, the preset value can make the first derating factor m1 be 0 instead of a null value for subsequent calculations.

[0064] S430, determine the second derating factor m2 of the charging pile according to the inlet air temperature T a , where 0 ≤ m2 ≤ 1, and the determination formula of the second derating factor m2 is: m2 = (T a - T2) / (T3 - T2), T2 ≤ T a , T2 is the second temperature threshold, and the second temperature threshold T2 is greater than the first temperature threshold T1.

[0065] After the charging pile 1 has been working for a period of time, the heat accumulated will have a relatively serious impact on the heat dissipation performance of the charging pile 1. At this time, it is necessary to separately consider how to limit the actual output power of the charging pile 1 under the condition of heat accumulation to ensure the safety of the charging pile 1 during charging. That is, it is necessary to determine the second derating coefficient m2 through m2 = (T a - T2) / (T3 - T2), and further determine the actual output power W of the charging pile according to the second derating coefficient m2. Preferably, T2 is 50 °C.

[0066] S440, determine the magnitude relationship between the first derating coefficient m1 and the second derating coefficient m2.

[0067] To simplify the comparison of the influence weights of altitude air pressure and high temperature on the heat dissipation performance of the charging pile 1 and avoid the problem of being unable to select a suitable derating coefficient from the first derating coefficient m1 and the second derating coefficient m2 to determine the actual output power of the charging pile 1, the magnitude relationship between the first derating coefficient m1 and the second derating coefficient m2 can be directly compared to determine the actual output power W.

[0068] S441, if the relationship m1 ≤ m2 holds, then regulate the actual output power W of the charging pile according to the second derating coefficient m2 and the original output power W0, where the determination formula for the actual output power W is: W = (1 - m2)W0.

[0069] S442, if the relationship m1 > m2 holds, then regulate the actual output power W of the charging pile according to the first derating coefficient m1 and the original output power W0.

[0070] In S441, if the value of the first derating coefficient m1 is less than or equal to the value of the second derating coefficient m2, it means that the actual output power corresponding to the second derating coefficient m2 is less than or equal to the actual output power corresponding to the first derating coefficient m1. That is, determining the actual output power W of the charging pile by W = (1 - m2)W0 can better limit the output power of the charging pile 1 and ensure the safety of the charging pile 1.

[0071] Similarly, in S442, if the value of the first derating coefficient m1 is greater than the value of the second derating coefficient m2, it means that the actual output power corresponding to the first derating coefficient m1 is greater than the actual output power corresponding to the second derating coefficient m2. That is, determining the actual output power W of the charging pile by W = (1 - m1)W0 can better limit the output power of the charging pile 1 and ensure the safety of the charging pile 1.

[0072] S450, control the charging pile to output power according to the actual output power W.

[0073] Among them, S410, S420, and S450 are respectively similar to S210, S220, and S240. Therefore, the implementation processes of S410 and S440 can respectively refer to those of S210, S220, and S240, and will not be elaborated here.

[0074] In the embodiment of the present application, the actual output power W is determined by comparing the magnitude relationship between the first derating coefficient m1 and the second derating coefficient m2. The influence of two factors (altitude and temperature) on the heat dissipation performance of the charging pile 1 and the influence of a single factor (temperature) on the heat dissipation performance of the charging pile 1 can be comprehensively considered. The actual output power corresponding to the larger one of the first derating coefficient m1 and the second derating coefficient m2 is used as the output power of the charging pile 1 to strictly ensure the charging safety of the charging pile 1.

[0075] In actual use, it is found that when the temperature is above 65°C, the charging pile 1 is prone to spontaneous combustion. At this time, the charging pile 1 should be controlled to stop outputting power. That is, when T a > T3 (T3 is the third temperature threshold, preferably 65°C), it indicates that the heat of the charging pile 1 is difficult to dissipate. At this time, the actual power W of the charging pile 1 should be set to 0.

[0076] In one implementation, when T a > T3, m2 can be set to 1 instead of determining the second derating coefficient m2 of the charging pile through the formula m2 = (T a - T2) / (T3 - T2), so that the value range of the second derating coefficient m2 is [0, 1], and the subsequent operations of S440 to S450 are continued.

[0077] In another implementation, when T a > T3, the formula m2 = (T a - T2) / (T3 - T2) can be directly used to determine the second derating coefficient m2 of the charging pile. When the relationship m1 ≤ m2 holds and the relationship T a > T3 holds, the actual output power W is set to 0; when the relationship m1 ≤ m2 holds and the relationship T2 ≤ T a ≤ T3 holds, the actual output power W of the charging pile 1 is regulated according to the second derating coefficient m2 and the original output power W0. Specifically, S441 further includes:

[0078] S441a, obtaining the third temperature threshold T3 and judging the magnitude relationship between the air inlet temperature T a and the second temperature threshold T2 and the third temperature threshold T3 respectively.

[0079] S441b, if the relationship T a > T3 holds, the actual output power W is set to 0.

[0080] S441c, if the relationship T2 ≤ T a ≤ T3 holds, then the actual output power W of the charging pile is regulated according to the second derating factor m2 and the original output power W0.

[0081] Furthermore, the actual output power W of the charging pile 1 is adjusted in real time following the usage process of the charging pile 1. When the temperature T at the air inlet a After reaching the third temperature threshold T3, the actual output power of the charging pile 1 is 0, so that the charging pile 1 stops continuing to output current, in order to make the temperature of the air inlet 12 drop. Until the temperature of the air inlet 12 drops to the fourth temperature threshold T4, the second derating factor m2 and the original output power W0 are substituted into the formula W = (1 - m2)W0 to determine the actual output power W of the charging pile, and the charging pile 1 is in the charging working state; if the temperature at the air inlet remains above the fourth temperature threshold T4, then the actual output power W is continuously set to 0. Specifically, before S440, the charging control method further includes:

[0082] S431, read the previous air inlet temperature T obtained by the charging pile last time b and the fourth temperature threshold T4, where T2 < T4 < T3;

[0083] S441c, further includes: if the relationship T3 < T b holds and T4 ≤ T a ≤ T3 holds, then the actual output power W is set to 0; if the relationship T b ≤ T3 holds or T2 ≤ T a < T4 holds, then the second derating factor m2 and the original output power W0 are substituted into the formula W = (1 - m2)W0 to determine the actual output power W of the charging pile.

[0084] Among them, the fourth temperature threshold T4 is preferably 60°C.

[0085] The embodiment of the present application can consider the extreme temperature situation during the charging of the charging pile 1 through the third temperature threshold T3, and by setting the actual output power to 0, in this case, the power output of the charging pile 1 is restricted to avoid the occurrence of spontaneous combustion of the charging pile 1; further, through the air inlet temperature T a 、the previous air inlet temperature T b and the size relationship between the fourth temperature threshold T4 characterize the cooling degree of the charging pile 1. Until the air inlet temperature of the charging pile 1 cools down to the fourth temperature threshold T4, the actual output power W of the charging pile 1 is re-determined, and the output power of the charging pile 1 is controlled according to the re-determined actual output power W, thereby further ensuring the safety of the charging pile 1.

[0086] Further, when the temperature of the charging pile 1 is relatively high, to help the charging pile 1 dissipate heat faster, the heat dissipation components inside the charging pile 1 can be operated. Specifically, the charging control method further includes:

[0087] S510, obtain the internal temperature T of the charging pile c , the fifth temperature threshold T5, and the sixth temperature threshold T6, where T1 < T5 < T6 < T3.

[0088] Through the connection of the PCBA and CCB to the temperature sensor, the temperature sensor collects the temperature of the internal space of the charging pile 1 to obtain the internal temperature T c , and sends the collected temperature value to the PCBA and CCB, so that the PCBA and CCB can operate the control logic based on the value of the internal temperature to ensure the safety of charging of the charging pile 1.

[0089] Among them, the fifth temperature threshold T5 and the sixth temperature threshold T6 can be pre-stored in the memory of the PCBA. Preferably, the fifth temperature threshold T5 is 40 °C, and the sixth temperature threshold T6 is 55 °C.

[0090] S520, determine the magnitude relationship between the internal temperature T c and the fifth temperature threshold T5 and the sixth temperature threshold T6 respectively.

[0091] S530, if the relation T c = T5 holds, then control the heat dissipation components of the charging pile to operate in the initial power state.

[0092] Preferably, if the relation T c = T5 holds, then the PCBA controls the fan to rotate at 40% of the rated speed to dissipate heat from the inside of the charging pile 1.

[0093] S540, if the relation T5 < T c < T6 holds, then control the heat dissipation components of the charging pile to operate at a power state greater than the initial power.

[0094] Preferably, if the relation T5 < T c < T6 holds, then the PCBA determines the actual output power W s according to the speed control formula determination method, and controls the fan to operate at the power state of the actual output power. Among them, the speed operation formula can be W s = [1 - (T c - T5 / T6 - T5)]W o , in the formula, W o is the rated power of the fan.

[0095] S550, if the relation T6 ≤ T c holds, then control the heat dissipation components of the charging pile to operate at the full power state.

[0096] If the relation T6 ≤ T c holds, it indicates that the heat in the charging pile 1 needs to be dissipated quickly. Therefore, the fan of the charging pile 1 is controlled to operate at the rated power.

[0097] Furthermore, to reduce the power consumption of the heat dissipation component, if the relation T c < T5 holds, the heat dissipation component of the charging pile is controlled to be in the sleep state; and / or, the working state of the charging pile is detected. If the charging pile is not in the charging state, the heat dissipation component of the charging pile is controlled to be in the sleep state.

[0098] If the relation T c < T5 holds, it indicates that the internal temperature of the charging pile 1 is appropriate; if the charging pile is not in the charging state, it indicates that the charging pile has stopped working. At this time, the heat dissipation component can be turned off to reduce the power consumption of the heat dissipation component.

[0099] Among them, the charging state of the charging pile can be determined by reading the operating state of the power module in the charging pile 1 through the CCB.

[0100] In the embodiment of the present application, the operating power of the heat dissipation component in the charging pile 1 is controlled by the magnitude relationship between the internal temperature T c and the fifth temperature threshold T5 and the sixth temperature threshold T6 respectively, which can reduce the power consumption of the heat dissipation component while ensuring the heat dissipation effect.

[0101] The charging safety of the charging pile 1 not only needs to consider high-temperature situations, but also needs to further consider low-temperature situations to improve the applicability of the charging pile 1. Preferably, the charging control method further includes:

[0102] S610, in response to the startup of the charging pile, obtain the internal temperature T c of the charging pile, the seventh temperature threshold T7, and the eighth temperature threshold T8, where T7 < T8 < 0 < T1.

[0103] Preferably, the seventh temperature threshold T7 is -25 °C, and the eighth temperature threshold T8 is -15 °C.

[0104] S620, determine the magnitude relationship between the internal temperature T c and the seventh temperature threshold T7 and the eighth temperature threshold T8 respectively.

[0105] S630, if the relation T c < T7 holds, control the heating component of the charging pile to start.

[0106] S640, if the relation T8 < T c holds, control the heating component of the charging pile to stop operating.

[0107] When the internal temperature is lower than -25°C, the charging pile 1 is difficult to work properly in a low-temperature environment. Therefore, after starting the charging pile 1, it is necessary to preheat the charging pile 1 to ensure that the internal temperature of the charging pile 1 is above -15°C.

[0108] In the embodiment of the present application, the operating state of the heating element in the charging pile 1 is controlled by the magnitude relationship between the internal temperature T c respectively and the seventh temperature threshold T7 and the eighth temperature threshold T8, so that the charging pile 1 adapts to different usage environments and improves the applicable range of the charging pile 1.

[0109] In addition to limiting the output power, the output current of the charging gun 11 of the charging pile 1 can also be limited, thereby further improving the safety of the charging pile 1. Preferably, the charging control method further includes:

[0110] S710, obtaining the charging gun temperature T of the charging pile d 、the first current temperature threshold T e and the second current temperature threshold T f .

[0111] Wherein, the charging gun temperature T d can be collected by a temperature sensor, and the first current temperature threshold T e and the second current temperature threshold T f can be pre-stored in the memory of the PCBA.

[0112] S720, judging the magnitude relationship between the charging gun temperature T d respectively and the first current temperature threshold T e and the second current temperature threshold T f .

[0113] S721, if the relational expression T e <T d <T f holds, then determine the third derating coefficient m3 of the charging pile according to the charging gun temperature T d , regulate the actual output current I of the charging pile according to the third derating coefficient m3 and the original output current I0 of the charging pile, and control the charging pile to output current according to the actual output current I, wherein, the determination formula of the third derating coefficient m3 is: m3 = b(T d -T e ), the determination formula of the actual output current I is: I = (1 - m3)I0, where b is a constant coefficient.

[0114] S722, if the relational expression T d ≤T f holds, then control the charging pile to stop outputting current.

[0115] Wherein, Te and T f It can be set according to the model of the charging gun 11 of the charging pile 1, and no specific limitation is made here.

[0116] In the embodiment of the present application, the charging gun temperature T d is respectively compared with the first current temperature threshold T e and the second current temperature threshold T f to limit the magnitude of the output current of the charging gun 11 of the charging pile 1, which can further improve the charging safety of the charging pile 1.

[0117] Figure 5 shows a schematic structural diagram of the charging control device provided by the embodiment of the present application. As Figure 5 shown, the device 800 includes: an acquisition module 810, a first determination module 820, a second determination module 830, and a control module 840.

[0118] The acquisition module 810 is configured to acquire the inlet air temperature T of the charging pile a , the original output power W0 of the charging pile, and the altitude H of the location where the charging pile is located.

[0119] The first determination module 820 is configured to determine the first derating coefficient m1 of the charging pile according to the inlet air temperature T a and the altitude H, where 0 ≤ m1 ≤ 1;

[0120] The second determination module 830 is configured to regulate the actual output power W of the charging pile according to the first derating coefficient m1 and the original output power W0;

[0121] The control module 840 is configured to control the charging pile to output power according to the actual output power W; wherein, the determination formula of the first derating coefficient m1 is: m1 = (T a - T1)(H - H1) / a, T1 ≤ T a , H1 ≤ H; the determination formula of the actual output power W is: W = (1 - m1)W0; in the formula, T1 is the first temperature threshold, H1 is the first altitude threshold, and a is a constant coefficient.

[0122] The charging control device 800 in the embodiment of the present application further includes other modules for performing the steps of the above-mentioned charging control method embodiment, which will not be elaborated here one by one.

[0123] Figure 6 shows a schematic structural diagram of the charging pile provided by the embodiment of the present application. The specific implementation of the charging pile is not limited in the specific embodiment of the present invention.

[0124] As Figure 6As shown, the charging pile may include: a processor 902 and a memory 904.

[0125] Among them, the memory 904 is used to store a computer program 906. The memory 904 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory. The computer program 906 may include computer-executable instructions.

[0126] The processor 902 is used to execute the computer program 906 to implement the steps in the above-described embodiment of the charging control method.

[0127] The processor 902 may be a central processing unit CPU, or a specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention. One or more processors included in the charging pile may be of the same type of processor, such as one or more CPUs; or may be of different types of processors, such as one or more CPUs and one or more ASICs.

[0128] An embodiment of the present application provides a computer-readable storage medium. The storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-described embodiment of the charging control method are implemented.

[0129] An embodiment of the present application provides a computer program. The computer program can be executed by a processor to implement the steps in the above-described embodiment of the charging control method.

[0130] An embodiment of the present application provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the steps in the above-described embodiment of the charging control method are implemented.

[0131] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings based herein. The structure required to construct such systems will be apparent from the above description. In addition, the embodiments of the present application are not directed to any particular programming language. It should be understood that the content of the present application described herein can be implemented using various programming languages, and the description of the specific language above is to disclose the best mode of the present application.

[0132] In the specification provided herein, a large number of specific details are set forth. However, it will be understood that embodiments of the present application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0133] Similarly, it should be understood that, in order to streamline the present application and assist in understanding one or more of the various inventive aspects, in the foregoing description of the exemplary embodiments of the present application, the various features of the embodiments of the present application are sometimes grouped together in a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting an intention that the claimed present application requires more features than are expressly recited in each claim.

[0134] Those skilled in the art will appreciate that the modules in the devices in the embodiments can be adaptively changed and disposed in one or more devices different from those of the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all the features disclosed in this specification (including the accompanying claims, abstract and drawings) and all the processes or units of any method or device so disclosed. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) can be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0135] It should be noted that the above embodiments illustrate rather than limit the present application, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present application can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specifically stated, should not be construed as limiting the order of execution.

Claims

1. A charging control method, applied to a charging pile, characterized in that, The charging control method includes: Obtain the inlet air temperature T of the charging pile a , the original output power W0 of the charging pile, and the altitude H of the location where the charging pile is located; According to the temperature T of the air inlet a and the altitude H, determine the first derating factor m1 of the charging pile, where 0 ≤ m1 ≤ 1; Regulating the actual output power W of the charging pile according to the first derating factor m1 and the original output power W0; Controlling the charging pile to output power according to the actual output power W; Wherein, The determination formula for the first derating factor m1 is: m1 = (T a - T1)(H - H1) / a, where T1 ≤ T a , and H1 ≤ H; The determination formula of the actual output power W is: W = (1 - m1)W0; In the formula, T1 is the first temperature threshold, H1 is the first altitude threshold, and a is a constant coefficient.

2. The charging control method according to claim 1, wherein Before determining the first derating factor m1 of the charging pile according to the inlet air temperature T a and the altitude H, the charging control method further includes: Obtaining a second altitude threshold H2; Judging the magnitude relationship between the altitude H and the first altitude threshold H1 and the second altitude threshold H2 respectively; If the relation H > H2 holds, then set the actual output power W to 0; The first derating factor m1 of the charging pile determined according to the inlet air temperature T a and the altitude H includes: If the relation H1 ≤ H ≤ H2 holds, then the first derating factor m1 of the charging pile is determined according to the inlet air temperature T a and the altitude H.

3. The charging control method according to claim 1, wherein Before regulating the actual output power W of the charging pile according to the first derating factor m1 and the original output power W0, the charging control method further includes: According to the inlet air temperature T a determine the second derating factor m2 of the charging pile; Judging the magnitude relationship between the first derating factor m1 and the second derating factor m2; If the relation m1 ≤ m2 holds, then regulate the actual output power W of the charging pile according to the second derating factor m2 and the original output power W0, and control the charging pile to output power according to the actual output power W; The first derating factor m1 of the charging pile determined according to the air inlet temperature T a and the altitude H includes: If the relation m1 > m2 holds, then according to the inlet air temperature T a and the altitude H, determine the first derating factor m1 of the charging pile; Wherein, The determination formula for the second derating factor m2 is: m2 = (T a - T2) / (T3 - T2), where T2 ≤ T a ; The determination formula of the actual output power W is: W = (1 - m2)W0; In the formula, T2 is the second temperature threshold, T3 is the third temperature threshold, the second temperature threshold T2 is greater than the first temperature threshold T1, and the second temperature threshold T2 is less than the third temperature threshold T3.

4. The charging control method according to claim 3, wherein The step of regulating the actual output power W of the charging pile according to the second derating factor m2 and the original output power W0 when the relation m1 ≤ m2 holds further includes: If the relation m1 ≤ m2 holds, obtain the third temperature threshold T3, and judge the magnitude relationship between the air inlet temperature T a and the second temperature threshold T2 and the third temperature threshold T3 respectively, where the third temperature threshold T3 is greater than the second temperature threshold T2; If the relational expression T a > T3 holds, then set the actual output power W to 0; If the relationship T2 ≤ T a ≤ T3 holds, then the actual output power W of the charging pile is regulated according to the second derating factor m2 and the original output power W0.

5. The charging control method according to claim 4, wherein Before judging the magnitude relationship between the first derating factor m1 and the second derating factor m2, the charging control method further includes: Read the temperature T of the previous air inlet obtained by the charging pile last time b and the fourth temperature threshold T4, where T2 < T4 < T3; If the relational expression T2≤T a ≤T3 holds, then regulating the actual output power W of the charging pile according to the second derating factor m2 and the original output power W0 further includes: If the relation T3 < T b holds and T4 ≤ T a ≤ T3 holds, then set the actual output power W to 0; If the relationship T b ≤ T3 holds or T2 ≤ T a < T4 holds, then the actual output power W of the charging pile is regulated according to the second derating factor m2 and the original output power W0.

6. The charging control method according to claim 3, characterized in that, The charging control method further includes: Obtain the internal temperature T of the charging pile c , the fifth temperature threshold T5 and the sixth temperature threshold T6, where T1 < T5 < T6 < T3; Determine the internal temperature T c and respectively compare its magnitude relationship with the fifth temperature threshold T5 and the sixth temperature threshold T6; If the relationship T c = T5 holds, control the heat dissipation component of the charging pile to operate in the initial power state; If the relation T5 < T c < T6 holds, control the heat dissipation component of the charging pile to operate in a power state greater than the initial power; If the relation T6 ≤ T c holds, control the heat dissipation component of the charging pile to operate in a full-power state.

7. The charging control method according to claim 6, wherein After determining the magnitude relationship between the internal temperature T c and the fifth temperature threshold T5 and the sixth temperature threshold T6 respectively, the charging control method further includes: If the relational expression T c <T5 holds, then the heat dissipation component of the charging pile is controlled to be in a sleep state; The charging control method further includes: Detecting the working state of the charging pile, and if the charging pile is not in the charging state, controlling the heat dissipation component of the charging pile to be in the sleep state.

8. The charging control method according to claim 3, wherein The charging control method further includes: Upon receiving the start-up of the charging pile, obtain the internal temperature T of the charging pile c , the seventh temperature threshold T7 and the eighth temperature threshold T8, where T7 < T8 < 0 < T1; Determine the internal temperature T c and respectively compare its magnitude relationship with the seventh temperature threshold T7 and the eighth temperature threshold T8; If the relational expression T c <T7 holds, then control the heating element of the charging pile to start; If the relationship T8 < T c holds, then control the heating element of the charging pile to stop operating.

9. The charging control method according to claim 4, wherein The charging control method further includes: Obtain the temperature T of the charging gun of the charging pile d , the first current temperature threshold T e and the second current temperature threshold T f ; Determine the temperature T of the charging gun d respectively compare with the first current temperature threshold T e and the second current temperature threshold T f to determine their magnitude relationship If the relationship T e <T d <T f holds, then the third derating factor m3 of the charging pile is determined according to the temperature T of the charging gun d The actual output current I of the charging pile is regulated according to the third derating factor m3 and the original output current I0 of the charging pile, and the charging pile is controlled to output current according to the actual output current I; If the relation T d ≤ T f holds, then control the charging pile to stop outputting current; Wherein, The determination formula for the third derating factor m3 is: m3 = b(T d - T e ); The determination formula of the actual output current I is: I = (1 - m3)I0; In the formula, b is a constant coefficient.

10. A charging pile, the charging pile comprising a memory, a processor, and a computer program stored on the memory, characterized in that, The processor executes the computer program to implement the steps of the charging control method according to any one of claims 1 to 9.

Images