Power distribution method and system, storage medium and charging pile

Abstract

The invention relates to the technical field of power distribution, and provides a power distribution method and system, a storage medium and a charging pile, and the power distribution method comprises the following steps: S1, obtaining the altitude of the charging pile, the environment temperature in the charging pile, the first rated power of a charging module, and the vehicle end demand power; s2, derating the first rated power of the charging module according to the altitude, the environment temperature and the power derating coefficient to obtain the second rated power of the charging module; and S3, according to the vehicle end demand power and the second rated power of the charging modules, the number of the charging modules started by the charging pile is obtained, power distribution is carried out on the vehicle end demand power, the influence of the altitude and the temperature on the charging modules can be fully considered, redundant charging modules are started and power output is distributed, and the charging efficiency is improved. Therefore, power compensation of the charging pile is achieved, the vehicle end requirement is met, the charging process is prevented from being prolonged, the charging experience of a user is improved, and the use efficiency of the charging pile is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of power distribution technology, and more specifically to a power distribution method, system, storage medium, and charging station. Background Technology

[0002] At high altitudes, the lower air density reduces the air's thermal conductivity and convection, impacting the heat dissipation efficiency of charging stations. The thin air makes it difficult to effectively dissipate the large amounts of heat generated by the charging modules during operation, leading to continuous heat buildup. Prolonged overheating not only accelerates the aging of internal components and affects operational stability but can also trigger overheat protection, causing charging interruptions. In severe cases, it can even create electrical fire hazards.

[0003] To ensure the long-term reliable operation of equipment in harsh environments, some charging stations will actively reduce the rated output power of the charging station when controlling the charging process, which will prolong the charging process, affecting not only the user's charging experience but also reducing the efficiency of the charging station. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a power distribution method, system, storage medium, and charging pile. It achieves power compensation for the charging pile while meeting the vehicle's requirements, without causing a decrease in the rated power of the charging pile, avoiding prolonged charging processes, improving the user's charging experience, and ensuring the efficiency of the charging pile.

[0005] The technical solution adopted in this invention is as follows:

[0006] A power allocation method is provided for power allocation among multiple charging modules within a charging pile, wherein the sum of the first rated power of the multiple charging modules is greater than the rated power of the charging pile. The method includes the following steps: S1, obtaining the altitude of the charging pile, the ambient temperature within the charging pile, the first rated power of the charging modules, and the power demand of the vehicle; S2, reducing the first rated power of the charging modules according to the altitude, the ambient temperature, and a power derating factor to obtain a second rated power of the charging modules, wherein the power derating factor includes an altitude derating factor and a temperature derating factor; S3, determining the number of charging modules activated in the charging pile according to the power demand of the vehicle and the second rated power of the charging modules, and allocating power according to the power demand of the vehicle.

[0007] In addition, the power allocation method proposed according to the present invention may also have the following additional technical features:

[0008] According to one embodiment of the present invention, in step S1, obtaining the altitude of the charging pile specifically includes: sending a location request to the network base station closest to the charging pile; and determining the altitude of the charging pile based on the latitude and longitude provided by the network base station.

[0009] According to an embodiment of the present invention, the second rated power P1 of the charging module is: P1 = P0 × K, where P0 represents the first rated power of the charging module, and K represents the power derating factor, which is calculated as follows:

[0010]

[0011] In the formula, K H K represents the altitude reduction coefficient. T H represents the temperature derating factor, H represents the altitude, H1 represents the preset altitude threshold, T represents the ambient temperature, and T1 represents the preset temperature threshold.

[0012] According to one embodiment of the present invention, the altitude reduction factor K H The calculation formula is: K H = 1 - A × (H - H1), where A represents the altitude-power coefficient of the charging module; and the temperature derating coefficient K T The calculation formula is: K T =1-D×(T-T1), where D represents the temperature-power coefficient of the charging module.

[0013] According to one embodiment of the present invention, when the altitude is greater than a preset altitude limit value of the charging module, or the ambient temperature is greater than a preset temperature limit value of the charging module, the charging module is deactivated, wherein the preset altitude limit value is greater than a preset altitude threshold, and the preset temperature limit value is greater than a temperature threshold. The formula for calculating the power derating factor K is:

[0014]

[0015] In the formula, H2 represents the preset altitude limit value, and T2 represents the preset temperature limit value.

[0016] According to one embodiment of the present invention, before step S3, the method further includes: obtaining the real-time power limit of the power grid, and when the vehicle-end power demand is greater than the real-time power limit of the power grid, updating the value of the vehicle-end power demand to be less than or equal to the value of the real-time power limit of the power grid.

[0017] According to one embodiment of the present invention, in step S3, the formula for calculating the number n of charging modules activated by the charging pile is: In the formula, P1 represents the second rated power of the charging module, and P2 represents the power required by the vehicle. The formula for calculating the output power P3 allocated to the charging module is as follows:

[0018] In addition, to achieve the above objectives, the present invention also proposes a power distribution system.

[0019] A power distribution system is provided for power distribution among multiple charging modules within a charging pile, wherein the sum of the first rated power of the multiple charging modules is greater than the rated power of the charging pile. The system includes: a first acquisition module for acquiring the altitude of the charging pile, the ambient temperature within the charging pile, the first rated power of the charging modules, and the power demand of the vehicle; a derating module for reducing the first rated power of the charging modules according to the altitude, the ambient temperature, and a power derating factor to obtain a second rated power of the charging modules, wherein the power derating factor includes an altitude derating factor and a temperature derating factor; and an allocation module for determining the number of charging modules activated by the charging pile based on the power demand of the vehicle and the second rated power of the charging modules, and allocating power according to the power demand of the vehicle.

[0020] In addition, to achieve the above objectives, the present invention also proposes a storage medium.

[0021] A storage medium storing a power allocation program, which, when executed by a processor, implements the steps of the power allocation method described above.

[0022] In addition, to achieve the above objectives, the present invention also proposes a charging pile.

[0023] A charging pile includes multiple charging modules, a memory, a processor, and a power allocation program stored in the memory and executable on the processor. When the processor executes the power allocation program, it implements the steps of the power allocation method described above, wherein the sum of the first rated power of the multiple charging modules is greater than the rated power of the charging pile.

[0024] The beneficial effects of this invention are:

[0025] The power allocation method of the present invention derates the first rated power of the charging module based on altitude, ambient temperature and power derating factor, and then allocates power according to the power demand of the vehicle. It can fully consider the impact of altitude and temperature on the charging module. By activating redundant charging modules and allocating power output, it can achieve power compensation for the charging pile and meet the needs of the vehicle. It will not cause a decrease in the rated power of the charging pile, avoid prolonging the charging process, improve the user's charging experience and ensure the efficiency of the charging pile. Attached Figure Description

[0026] Figure 1 This is a flowchart of the power allocation method according to an embodiment of the present invention;

[0027] Figure 2 The graph shows the rated power of the charging module according to one embodiment of the present invention as a function of ambient temperature when the altitude is below a preset altitude threshold.

[0028] Figure 3 The graph shows the rated power of the charging module according to one embodiment of the present invention as a function of altitude when the ambient temperature is below a preset temperature threshold.

[0029] Figure 4 This is a graph showing the change in rated power of a charging module according to an embodiment of the present invention under the influence of altitude and ambient temperature.

[0030] Figure 5 This is a block diagram of a power distribution system according to an embodiment of the present invention;

[0031] Figure 6 This is a block diagram of a power distribution system according to an embodiment of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1 As shown, the power allocation method of this invention is used for power allocation among multiple charging modules in a charging pile, wherein the sum of the first rated power of the multiple charging modules is greater than the rated power of the charging pile. The power allocation method includes the following steps S1 to S3:

[0034] S1, obtain the altitude of the charging pile, the ambient temperature inside the charging pile, the first rated power of the charging module, and the power required by the vehicle. The first rated power of the charging module can be the factory-set rated power or the rated power set before power allocation at the charging pile; this embodiment does not impose any limitation.

[0035] Most charging stations are equipped with temperature sensors for thermal management, allowing the ambient temperature inside the charging station to be directly obtained. The thermal management module within the charging station can also dissipate heat from multiple charging modules, preventing heat buildup and potential safety hazards.

[0036] Most existing charging stations obtain altitude through GPS. However, high-altitude areas (such as mountains and plateaus) are mostly distributed in mid-to-low latitude regions, where ionospheric activity is usually more active, which can cause significant interference to GPS signals. In addition, some charging stations are located in indoor stations or underground parking garages, where GPS signals are weak or even absent, which can easily lead to positioning failures.

[0037] Considering the above problems, in one embodiment of the present invention, the location can be determined by using a network base station near the charging pile. Specifically, in step S1, obtaining the altitude of the charging pile can include the following steps: (1) sending a location request to the network base station closest to the charging pile; (2) determining the altitude of the charging pile by querying the charging pile's built-in database or network database based on the latitude and longitude provided by the network base station.

[0038] In some other embodiments of the present invention, the altitude of the charging pile can also be manually set by the user or staff, and this embodiment does not impose any limitations.

[0039] S2, the first rated power of the charging module is reduced according to the altitude, ambient temperature and power derating factor to obtain the second rated power of the charging module. The power derating factor includes the altitude derating factor and the temperature derating factor. By fully considering the impact of altitude and ambient temperature on the working safety of the charging module, the stability and safety of the charging module and the charging pile are ensured.

[0040] In one embodiment of the present invention, the second rated power P1 of the charging module is: P1 = P0 × K, where P0 represents the first rated power of the charging module, K represents the power derating factor, and its value range is [0,1]. The formula for calculating the power derating factor K is:

[0041]

[0042] In the formula, K H K represents the altitude reduction coefficient. T H represents the temperature derating factor, H represents altitude, H1 represents the preset altitude threshold, T represents the ambient temperature, and T1 represents the preset temperature threshold.

[0043] Specifically, the altitude reduction coefficient K H The calculation formula can be: K H = 1 - A × (H - H1), where A represents the altitude-power coefficient of the charging module, reflecting the impact of altitude changes on the rated power of the charging module under normal ambient temperature; temperature derating coefficient K T The calculation formula can be: K T= 1 - D × (T - T1), where D represents the temperature-power coefficient of the charging module, reflecting the impact of ambient temperature changes on the rated power of the charging module at different altitudes. The specific values ​​of A and D can be obtained through experimental testing, and the specific values ​​of A and D may differ for different models of charging modules. When the charging module in the charging pile is replaced, the output power of the charging module can be precisely controlled by resetting the specific values ​​of A and D.

[0044] In one embodiment of the present invention, when the altitude is greater than the preset altitude limit of the charging module, or the ambient temperature is greater than the preset temperature limit of the charging module, the charging module is deactivated. The preset altitude limit is greater than a preset altitude threshold, and the preset temperature limit is greater than a temperature threshold. The formula for calculating the power derating factor K is as follows:

[0045]

[0046] In the formula, H2 represents the preset altitude limit and T2 represents the preset temperature limit.

[0047] In one specific embodiment of the present invention, considering international standards, H1 can be set to 2000m, H2 to 4000m, T1 to 45 degrees Celsius, and T2 to 70 degrees Celsius. In some other embodiments of the present invention, the preset altitude threshold, preset temperature threshold, preset altitude limit, and preset temperature limit can also be adjusted according to the specific situation of the charging module. This embodiment does not impose any limitations on these adjustments.

[0048] In one specific embodiment of the present invention, when T≤45 degrees Celsius, the rated power of the charging module varies under the influence of altitude and altitude-power coefficient A. Figure 2 As shown; when H≤2000m, the rated power of the charging module varies under the influence of ambient temperature and the temperature-power coefficient D, as shown in the figure; Figure 3 As shown; when H > 2000m and T > 45 degrees Celsius, the rated power of the charging module varies under the influence of altitude, ambient temperature, altitude-power coefficient A, and temperature-power coefficient D, as follows. Figure 4 As shown.

[0049] S3 determines the number of charging modules activated by the charging pile based on the vehicle's power demand and the second rated power of the charging module, and allocates power to the vehicle's power demand.

[0050] In one embodiment of the present invention, the formula for calculating the number n of charging modules activated by the charging pile in step S3 is as follows: In the formula, P1 represents the second rated power of the charging module, and P2 represents the power required by the vehicle. To ensure that the activated charging module can fully meet the vehicle's requirements, the formula for calculating the output power P3 allocated to the charging module is as follows:

[0051] Considering that high-altitude areas are mostly remote areas with large fluctuations in grid capacity, static power allocation can easily cause grid overload. In one embodiment of the present invention, before step S3, the method further includes: obtaining the real-time grid limit power. When the power demanded by the vehicle is greater than the real-time grid limit power, the value of the power demanded by the vehicle is updated to be less than or equal to the value of the real-time grid limit power to avoid the charging pile output power being too high, which would cause grid overload.

[0052] Understandably, considering that charging piles generally do not change location or have their charging modules replaced during operation, in one embodiment of the present invention, step S1 may include the following steps S11 and S12: S11, obtaining the altitude of the charging pile and the first rated power of the charging module. S12, obtaining the ambient temperature inside the charging pile and the power required by the vehicle. In this embodiment, after step S11 is executed, steps S12, S2, and S3 can be executed repeatedly, thereby ensuring the stability and safety of the charging module and charging pile in real time while avoiding resource waste.

[0053] According to the power allocation method of the present invention, the first rated power of the charging module is derated based on altitude, ambient temperature and power derating factor, and then the power is allocated according to the power demand of the vehicle. This method can fully consider the impact of altitude and temperature on the charging module. By enabling redundant charging modules and allocating power output, the power compensation of the charging pile is achieved and the vehicle demand is met. This method does not cause a decrease in the rated power of the charging pile, avoids prolonging the charging process, improves the user's charging experience and ensures the efficiency of the charging pile.

[0054] Corresponding to the power allocation method described above, this invention also proposes a power allocation system. Since the system embodiments of this invention correspond to the method embodiments described above, details not disclosed in the system embodiments can be found in the method embodiments described above, and will not be repeated here.

[0055] like Figure 5As shown, the power distribution system of this embodiment includes: a first acquisition module 10, a derating module 20, and an allocation module 30. The first acquisition module 10 is used to acquire the altitude of the charging pile, the ambient temperature inside the charging pile, the first rated power of the charging module, and the power demand of the vehicle. The derating module 20 is used to drate the first rated power of the charging module according to the altitude, ambient temperature, and power derating coefficient to obtain the second rated power of the charging module. The power derating coefficient includes an altitude derating coefficient and a temperature derating coefficient. The allocation module 30 is used to obtain the number of charging modules activated by the charging pile according to the power demand of the vehicle and the second rated power of the charging module, and to allocate the power demand of the vehicle.

[0056] According to the power distribution system of the present invention, the first rated power of the charging module is derated based on altitude, ambient temperature and power derating factor, and then the power is distributed according to the power demand of the vehicle. This fully considers the impact of altitude and temperature on the charging module. By activating redundant charging modules and distributing power output, the power compensation of the charging pile is achieved and the vehicle demand is met. This does not cause a decrease in the rated power of the charging pile, avoids prolonging the charging process, improves the user's charging experience and ensures the efficiency of the charging pile.

[0057] In one embodiment of the present invention, the first acquisition module 10 acquires the altitude of the charging pile based on the following steps: (1) sending a location request to the network base station closest to the charging pile; (2) determining the altitude of the charging pile based on the latitude and longitude provided by the network base station. In some other embodiments of the present invention, the altitude of the charging pile can also be manually set by the user or staff, and this embodiment does not impose any limitations.

[0058] In one embodiment of the present invention, the second rated power P1 of the charging module is: P1 = P0 × K, where P0 represents the first rated power of the charging module, and K represents the power derating factor, which is calculated as follows:

[0059]

[0060] In the formula, K H K represents the altitude reduction coefficient. T H represents the temperature derating factor, H represents altitude, H1 represents the preset altitude threshold, T represents the ambient temperature, and T1 represents the preset temperature threshold.

[0061] Specifically, the altitude reduction coefficient K H The calculation formula is: K H = 1 - A × (H - H1), where A represents the altitude-power coefficient of the charging module; and K represents the temperature derating coefficient. T The calculation formula is: KT =1-D×(T-T1), where D represents the temperature-power coefficient of the charging module.

[0062] In one embodiment of the present invention, when the altitude is greater than the preset altitude limit of the charging module, or the ambient temperature is greater than the preset temperature limit of the charging module, the allocation module 30 disables the charging module to prevent the charging module from continuously operating in a dangerous environment. The preset altitude limit is greater than a preset altitude threshold, and the preset temperature limit is greater than a temperature threshold. The formula for calculating the power derating factor K is:

[0063]

[0064] In the formula, H2 represents the preset altitude limit and T2 represents the preset temperature limit.

[0065] In one embodiment of the present invention, the formula for calculating the number n of charging modules activated by the allocation module 30 is as follows: In the formula, P1 represents the second rated power of the charging module, and P2 represents the power required by the vehicle. The formula for calculating the output power P3 allocated to the charging module is as follows:

[0066] Considering that high-altitude areas are mostly remote, with large fluctuations in grid capacity, static power distribution can easily lead to grid overload, such as Figure 6 As shown, in one embodiment of the present invention, a second acquisition module 40 is also included. The second acquisition module 40 is used to acquire the real-time power limit of the power grid. When the power demand of the vehicle is greater than the real-time power limit of the power grid, the value of the power demand of the vehicle is updated to be less than or equal to the value of the real-time power limit of the power grid, so as to avoid the charging pile output power being too high, which would cause the power grid to be overloaded.

[0067] In addition, to achieve the above objectives, the present invention also proposes a storage medium.

[0068] The storage medium of this invention stores a power allocation program, which, when executed by a processor, implements the steps of the power allocation method described above.

[0069] The storage medium according to the embodiments of the present invention, since it stores a power allocation program, and when the power allocation program is executed by the processor, it implements the steps of the power allocation method as described above, and therefore also has the above-mentioned beneficial effects.

[0070] In addition, to achieve the above objectives, the present invention also proposes a charging pile.

[0071] The charging pile of this invention includes multiple charging modules, a memory, a processor, and a power allocation program stored in the memory and executable on the processor. When the processor executes the power allocation program, it implements the steps of the power allocation method described above, wherein the sum of the first rated power of the multiple charging modules is greater than the rated power of the charging pile.

[0072] According to an embodiment of the present invention, the charging pile is configured such that the sum of the first rated power of multiple charging modules is greater than the rated power of the charging pile, thereby making the charging modules redundant. A power allocation program that can run on a processor is also stored in the memory. When the power allocation program is executed by the processor, it implements the steps of the power allocation method described above. This fully considers the impact of altitude and temperature on the charging modules. By enabling and allocating power output to the redundant charging modules, power compensation for the charging pile is achieved, meeting the vehicle's requirements. This does not cause a decrease in the rated power of the charging pile, avoids prolonged charging, improves the user's charging experience, and ensures the efficiency of the charging pile.

[0073] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0074] The execution order of the steps shown in the flowchart is the preferred implementation. In other embodiments of the present invention, the order can be adjusted according to the functions involved in each step, for example, they can be executed simultaneously or in the reverse order.

[0075] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequential list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in connection with, an instruction execution system, apparatus, or device. For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit a program for use by, or in connection with, an instruction execution system, apparatus, or device.

[0076] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0077] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

Claims

1. A power distribution method for power distribution among multiple charging modules within a charging pile, characterized in that, The method includes the following steps: The sum of the first rated power of the plurality of charging modules is greater than the rated power of the charging pile. S1, obtain the altitude of the charging pile, the ambient temperature inside the charging pile, the first rated power of the charging module, and the power required by the vehicle. S2, the first rated power of the charging module is reduced according to the altitude, the ambient temperature and the power derating factor to obtain the second rated power of the charging module, wherein the power derating factor includes the altitude derating factor and the temperature derating factor; S3. Based on the vehicle-side power demand and the second rated power of the charging module, determine the number of charging modules activated by the charging pile, and allocate power to the vehicle-side power demand.

2. The power distribution method according to claim 1, characterized in that, In step S1, the altitude of the charging pile is obtained, specifically including: Send a location request to the network base station closest to the charging pile; The altitude of the charging pile is determined based on the latitude and longitude provided by the network base station.

3. The power distribution method according to claim 1, characterized in that, The second rated power P1 of the charging module is: P 1＝ P0×K, where P0 represents the first rated power of the charging module, and K represents the power derating factor, the calculation formula of which is: In the formula, K H K represents the altitude reduction coefficient. T H represents the temperature derating factor, H represents the altitude, H1 represents the preset altitude threshold, T represents the ambient temperature, and T1 represents the preset temperature threshold.

4. The power distribution method according to claim 3, characterized in that, The altitude reduction coefficient K H The calculation formula is: K H = 1 - A × (H - H1), where A represents the altitude-power coefficient of the charging module; and the temperature derating coefficient K T The calculation formula is: K T =1-D×(T-T1), where D represents the temperature-power coefficient of the charging module.

5. The power distribution method according to claim 3 or 4, characterized in that, When the altitude exceeds the preset altitude limit of the charging module, or the ambient temperature exceeds the preset temperature limit of the charging module, the charging module is deactivated. The preset altitude limit exceeds the preset altitude threshold, and the preset temperature limit exceeds the temperature threshold. The formula for calculating the power derating factor K is: In the formula, H2 represents the preset altitude limit value, and T2 represents the preset temperature limit value.

6. The power distribution method according to claim 1, characterized in that, The steps preceding step S3 also include: The system obtains the real-time power limit of the power grid. When the power demand of the vehicle exceeds the real-time power limit of the power grid, the system updates the value of the power demand of the vehicle to be less than or equal to the value of the real-time power limit of the power grid.

7. The power distribution method according to claim 1, characterized in that, In step S3, the formula for calculating the number n of charging modules activated by the charging pile is: In the formula, P1 represents the second rated power of the charging module, and P2 represents the power required by the vehicle. The formula for calculating the output power P3 allocated to the charging module is as follows:

8. A power distribution system for power distribution among multiple charging modules within a charging pile, characterized in that, The system comprises a plurality of charging modules whose first rated power is greater than the rated power of the charging pile, wherein the sum of the first rated power of the charging modules is greater than the rated power of the charging pile. The first acquisition module is used to acquire the altitude of the charging pile, the ambient temperature inside the charging pile, the first rated power of the charging module, and the power required by the vehicle. A derating module is used to reduce the first rated power of the charging module according to the altitude, the ambient temperature and the power derating factor to obtain the second rated power of the charging module, wherein the power derating factor includes an altitude derating factor and a temperature derating factor; The allocation module is used to determine the number of charging modules activated by the charging pile based on the vehicle-side power demand and the second rated power of the charging module, and to allocate the power demand of the vehicle-side.

9. A storage medium, characterized in that, The storage medium stores a power allocation program, which, when executed by a processor, implements the steps of the power allocation method as described in any one of claims 1 to 7.

10. A charging pile, characterized in that, The device includes multiple charging modules, a memory, a processor, and a power allocation program stored in the memory and executable on the processor. When the processor executes the power allocation program, it implements the steps of the power allocation method as described in any one of claims 1 to 7, wherein the sum of the first rated power of the multiple charging modules is greater than the rated power of the charging pile.

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