Power control device and power control method for direct current charging pile

Abstract

The application relates to the technical field of electric vehicle charging and discloses a power control device and a power control method for a direct-current charging pile. The power control device comprises a first interface, a second interface and a processor. The first interface is used for being connected to a communication bus between an electric vehicle and the direct-current charging pile to obtain an actual power request of the electric vehicle. The second interface is used for communicating with a remote control platform to receive a power regulation instruction sent by the remote control platform. The processor is electrically connected to the first interface and the second interface and is used for generating a simulated power request when a power value carried by the power regulation instruction is less than or equal to a power value carried by the actual power request. The first interface is controlled to send the simulated power request to the direct-current charging pile to modify and forward the actual power request of the electric vehicle to the direct-current charging pile. Abnormal conditions are monitored, and the sending of the simulated power request is stopped when the abnormal conditions are met, so that the electric vehicle and the direct-current charging pile resume direct communication. The power control of the direct-current charging pile is more flexible, efficient and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a power control device and a power control method for a direct-current charging pile. BACKGROUND

[0002] With the popularization of new energy vehicles, as an important infrastructure, the flexible regulation and control of the charging power of direct-current charging piles has become a key to the realization of load balancing of a virtual power plant. In the prior art, the power control of the charging pile is usually controlled by its background management system, and it is difficult for a third-party system to directly intervene.

[0003] In the construction of a virtual power plant, the charging power of the charging pile needs to be dynamically reduced (such as reducing the charging power during a peak electricity consumption period) according to the load peak and valley of the power grid, the fluctuation of new energy power generation, and the like. However, due to the following problems, the prior art cannot achieve efficient regulation and control:

[0004] Third-party dispatching instructions cannot directly reach the charging pile;

[0005] Poor protocol compatibility: different charging piles use differentiated CAN bus communication protocols (even if they all comply with the GB / T27930 standard, there are still differences in details), and the third-party system needs to develop an adaptation module for different communication protocols, which has a long development cycle and high cost;

[0006] Safety risks: directly modifying the control program of the charging pile may damage the original safety mechanisms (such as overcurrent protection and insulation detection), leading to charging accidents.

[0007] Therefore, there is an urgent need for a means to improve the flexibility of the charging power regulation and control of direct-current charging piles and maintain the load balancing of the power grid. SUMMARY

[0008] The main purpose of the present application is to provide a power control device and a power control method for a direct-current charging pile, which can solve the lack of means to improve the flexibility of the charging power regulation and control of direct-current charging piles in the prior art.

[0009] To achieve the above-mentioned purpose, the first aspect of the present application provides a power control device for a direct-current charging pile, which comprises:

[0010] a first interface for connecting to a communication bus between an electric vehicle and a direct-current charging pile to obtain an actual power request of the electric vehicle;

[0011] a second interface for communicating with a remote control platform to receive a power regulation and control instruction issued by the remote control platform;

[0012] a processor electrically connected to the first interface and the second interface, the processor being configured to:

[0013] generate an analog power request when the first power value carried by the power regulation instruction is less than or equal to the second power value carried by the actual power request, wherein a third power value carried by the analog power request is not greater than the first power value, and the analog power request is used to instruct the DC charging pile to charge the electric vehicle at the third power value;

[0014] control the first interface to send the analog power request to the DC charging pile to modify and forward the actual power request of the electric vehicle to the DC charging pile;

[0015] monitor a preset abnormal condition, and stop sending the analog power request when the abnormal condition is met, so as to restore the direct communication between the electric vehicle and the DC charging pile.

[0016] To achieve the above object, the second aspect of the present application provides a power control method of a DC charging pile, which comprises:

[0017] acquire the actual power request of the electric vehicle through a first interface connected to a communication bus between the electric vehicle and the DC charging pile, and receive the power regulation instruction of the remote control platform through a second interface;

[0018] generate an analog power request when the first power value carried by the power regulation instruction is less than or equal to the second power value carried by the actual power request, wherein a third power value carried by the analog power request is not greater than the first power value, and the analog power request is used to instruct the DC charging pile to charge the electric vehicle at the third power value;

[0019] control the first interface to send the analog power request to the DC charging pile to modify and forward the actual power request of the electric vehicle to the DC charging pile;

[0020] monitor a preset abnormal condition, and stop sending the analog power request when the abnormal condition is met, so as to restore the direct communication between the electric vehicle and the DC charging pile.

[0021] To achieve the above object, the third aspect of the present application provides a computer readable storage medium storing a computer program, wherein the computer program is executed by a processor to make the processor execute the steps of the power control method of the DC charging pile according to the second aspect.

[0022] To achieve the above object, the fourth aspect of the present application provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the computer program is executed by the processor to make the processor execute the steps of the power control method of the DC charging pile according to the second aspect.

[0023] By adopting the embodiment of the present application, the following beneficial effects are achieved:

[0024] The present application provides a kind of power control device of direct current charging pile, power control device includes: first interface, for being connected on communication bus between electric vehicle and direct current charging pile, to obtain the actual power request of electric vehicle;Second interface is used to communicate with remote control platform, to receive the power regulation instruction issued by remote control platform;Processor is electrically connected with first interface and second interface, processor is used to: when the first power value carried in power regulation instruction is less than or equal to the second power value carried in actual power request, generate analog power request, wherein the third power value carried in analog power request is not greater than first power value, analog power request is used to indicate direct current charging pile to third power value to electric vehicle charging;Control first interface sends analog power request to direct current charging pile, to modify and forward the actual power request of electric vehicle to reach direct current charging pile;Monitoring preset abnormal condition, and when abnormal condition is satisfied, stop sending analog power request, to make electric vehicle and direct current charging pile restore direct communication.

[0025] By using the above power control device, the actual power request of electric vehicle and the power regulation instruction issued by remote control platform such as virtual power plant can be obtained through first interface and second interface, so that when the first power value carried in power regulation instruction is less than or equal to the second power value carried in actual power request, analog power request is generated, and the analog power request can be sent to direct current charging pile directly without passing through background management system to regulate the charging power provided by direct current charging pile to electric vehicle, so that the power control mode of direct current charging pile is more flexible and efficient, which is beneficial to power grid load balancing;At the same time, the preset abnormal condition monitoring and automatic recovery of direct communication safety fallback mechanism provide double safety guarantee for charging process, and significantly improve the reliability of regulation. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0027] Among them:

[0028] Figure 1 It is the application environment diagram of the power control method of direct current charging pile in the embodiment of the present application;

[0029] Figure 2 It is the structure block diagram of the power control device of direct current charging pile in the embodiment of the present application;

[0030] Figure 3 A flow chart of a power control method of a direct current charging pile in an embodiment of the present application;

[0031] Figure 4 A structural block diagram of a computer device in an embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to Figure 1 , Figure 1 An application environment diagram of a power control method of a direct current charging pile in an embodiment of the present application, referring to Figure 1 The power control method of the direct current charging pile is applied to a power control system 00 of the direct current charging pile. The power control system 00 of the direct current charging pile includes a remote control platform 10, a power control device of the direct current charging pile 20, an electric vehicle 30 and a direct current charging pile 40. Among them, the direct current charging pile has a communication connection with the electric vehicle, and the power control device of the direct current charging pile has a communication connection with the direct current charging pile, the electric vehicle and the remote control platform respectively.

[0034] Further, the system 00 further includes a background management system (not shown) of the direct current charging pile, which has a communication connection with the direct current charging pile 40 and the remote control platform 10 respectively.

[0035] For example, the remote control platform can be a virtual power grid platform for controlling the power grid. The direct current charging pile is connected to the power grid to charge the electric vehicle.

[0036] Conventionally, when the remote control platform issues a power control instruction, it needs to be indirectly sent to the direct current charging pile through the remote control platform 10 to realize the power control of the direct current charging pile, which leads to the power control being not flexible and timely.

[0037] Therefore, the present application proposes a power control device of a direct current charging pile, so that the power control instruction issued by the remote control platform can not be indirectly sent to the direct current charging pile through the remote control platform 10, but directly sent to the direct current charging pile through the power control device of the direct current charging pile to realize the direct power control of the direct current charging pile. For details, please refer to the following contents:

[0038] Please refer toFigure 2 , Figure 2 Figure 1 is a structural block diagram of a power control device of a direct current charging pile in an embodiment of the present application, Figure 2 The power control device 20 of the direct current charging pile comprises:

[0039] A first interface 21 is used to connect a communication bus between an electric vehicle and the direct current charging pile to obtain an actual power request of the electric vehicle; it should be noted that when the electric vehicle needs to be charged, the actual power request is sent to the direct current charging pile, and the actual power request is used to reflect the actual charging power required by the electric vehicle . Specifically, the first interface is connected to the communication bus between the electric vehicle and the direct current charging pile.

[0040] A second interface 22 is used to communicate with a remote control platform to receive a power regulation instruction sent by the remote control platform; it should be noted that the power control device of the direct current charging pile establishes a communication connection between the second interface and the remote control platform, so that the power regulation instruction sent by the remote control platform can be received through the second interface. The power regulation instruction is used to reflect a second power value that can be borne by the power grid , and the power regulation instruction carries the second power value . In this way, the charging power of the direct current charging pile is adjusted to avoid exceeding the capacity range of the power grid.

[0041] A processor 23 is electrically connected to the first interface and the second interface, and the processor is used to execute steps S1, S2 and S3:

[0042] S1, when the first power value carried by the power regulation instruction is less than or equal to the second power value carried by the actual power request , a simulated power request is generated, wherein the third power value carried by the simulated power request is not greater than the first power value , and the simulated power request is used to instruct the direct current charging pile to charge the electric vehicle at the third power value;

[0043] In order to avoid the requested power exceeding the power that can be borne by the power grid, the first power value of the power regulation instruction and the second power value carried by the actual power request are compared, and when the first power value carried by the power regulation instruction is less than or equal to the second power value carried by the actual power request , a simulated power request is generated, wherein the third power value of the simulated power request is not greater than the first power value For example, the first power value can be requested using analog power. The second power value carried in place of the actual power request Let the DC charging pile operate at its first power value When charging electric vehicles, although it's not possible to use a higher power output (such as a second power value) at this time. It charges electric vehicles while ensuring grid load balance.

[0044] S2. Control the first interface to send the simulated power request to the DC charging pile, so as to modify and forward the actual power request of the electric vehicle to the DC charging pile;

[0045] Furthermore, a simulated power request is used instead of the actual power request and sent to the DC charging pile to modify and forward the actual power request of the electric vehicle to the DC charging pile. This modification and forwarding of the actual power request can be achieved through hardware or software logic, which is not limited herein. For example, the actual power request may carry a charging power of 100kW; however, the power control command may carry a charging power of 80kW. In this case, a simulated power request is generated and sent to the DC charging pile. The simulated power request may carry a power supply of 80kW or less, thus modifying the actual power request of the electric vehicle and forwarding the modified simulated power request to the DC charging pile. In other words, by modifying and forwarding the actual power request through the power control device, the charging power received by the DC charging pile is ensured to be no higher than 80kW.

[0046] In one feasible implementation, the power control device further includes a switching component; the processor is further configured to control the state of the switching component to modify and forward the actual power request and restore the direct communication. That is, by controlling the state of the switching component, 1) the first power value carried in the power regulation command is achieved. The second power value carried by the actual power request is less than or equal to the actual power value. At that time, modify and forward the actual power request to the DC charging device (such as a DC charging pile). 2) The first power value carried in the power control command. The second power value requested is greater than the actual power. At the same time, direct communication between the DC charging pile and the electric vehicle is restored, allowing the electric vehicle to directly send its actual power request to the DC charging device.

[0047] In an implementation, the switching component can include a relay, and the switching component is configured to switch the state of the communication link between the DC charging pile and the electric vehicle; wherein a normally closed contact of the relay is configured to connect the electric vehicle and the DC charging pile to form the direct communication; a normally open contact of the relay is configured to connect the first interface; and the processor is further configured to drive the relay to disconnect the normally closed contact and connect the normally open contact connected to the first interface, so as to send the analog power request to the DC charging pile, and modify and forward the actual power request to the DC charging pile.

[0048] In an implementation, the switching component can also be a software logic module, and the processor is configured to control the state of the switching component to restore the direct communication, including controlling the state of the software logic module. Specifically, the processor is configured to switch the state of the switching component to a transparent forwarding mode to restore the direct communication, and in the transparent forwarding mode, the processor is configured to forward the message received from the electric vehicle to the DC charging pile, and forward the message received from the DC charging pile to the electric vehicle. In the transparent forwarding mode, the switching component only functions as a forwarding component. Conversely, when the analog power request needs to be sent, the state of the switching component is in a non-transparent forwarding mode.

[0049] S3, monitoring a preset abnormal condition, and stopping sending the analog power request when the abnormal condition is met, so as to restore the direct communication between the electric vehicle and the DC charging pile.

[0050] Further, an abnormal condition monitoring mechanism is further preset, and the abnormal condition monitoring mechanism is configured to stop sending the analog power request when the abnormal condition is met, so as to restore the direct communication between the electric vehicle and the DC charging pile. When the direct communication is restored, the actual power request can be sent to the DC charging pile, and the charging efficiency is improved.

[0051] In an implementation, the preset abnormal condition includes that a first power value carried by the power control instruction is greater than a second power value carried by the actual power request. That is, when Pcontrol is greater than Pactual, it indicates that the requested power will not exceed the maximum tolerable power of the power grid, and therefore the electric vehicle can directly send the actual power request to the DC charging pile. The preset abnormal condition monitoring and automatic restoration of the direct communication provide a double safety guarantee for the charging process, and significantly improve the reliability of the control.

[0052] In an implementation, the processor is further configured to forward the charging state message fed back by the DC charging pile to the electric vehicle via the first interface.

[0053] In an implementation, the first interface is a controller area network (CAN) interface, and the communication bus is a CAN bus. The second interface is a 4G communication module, a 5G communication module, or an Ethernet interface.

[0054] An exemplary device structure is as follows:

[0055] The power control device of the direct-current charging pile can be an independent hardware module (hereinafter referred to as a "power control device") connected in series to a CAN bus between an electric vehicle and a charging pile, and includes:

[0056] A CAN bus interaction module is connected to a CAN interface of the charging pile and a CAN interface of the electric vehicle, respectively, for bidirectional forwarding of CAN messages and extraction of key data (such as actual power demand of the electric vehicle and current output parameters of the charging pile);

[0057] A power instruction generation module receives a target upper limit of power (the power value ) issued by a virtual power plant platform (i.e., the remote control platform described above), and generates a "simulated power request signal" (the power value carried by the signal is less than or equal to the actual power demand of the electric vehicle) in combination with the actual power demand of the electric vehicle;

[0058] A safety monitoring module monitors voltage, current, temperature, and insulation state of a charging circuit in real time, and immediately cuts off the simulated signal and restores direct communication between the electric vehicle and the charging pile when an abnormality is detected (such as when the simulated request exceeds a safety threshold);

[0059] A virtual power plant communication module communicates with the virtual power plant platform through 4G / 5G or Ethernet, receives scheduling instructions (such as the target upper limit of power), and uploads the current charging state.

[0060] The hardware configuration can refer to the following configuration:

[0061] The power control device uses an STM32H743 microcontroller as the core and is equipped with:

[0062] 2-way isolated CAN transceivers (supporting CAN 2.0B protocol, rate 500kbps, meeting automotive electromagnetic compatibility standards);

[0063] A 4G communication module (supporting LTE Cat.1, realizing wireless communication with the virtual power plant platform);

[0064] A voltage / current acquisition module (sampling accuracy 0.5%, sampling frequency 1kHz);

[0065] A temperature sensor (monitoring the temperature of the charging gun head, range -40℃~125℃);

[0066] Relay module (cuts off analog signals and restores the original CAN bus connection in case of an abnormality).

[0067] Exemplary control method:

[0068] Step 1: The power control device connects to the charging circuit and, during initialization, reads the actual power demand sent by the electric vehicle's BMS (Battery Management System) via the CAN bus interaction module. (e.g., 100kW) and the maximum output capacity of the charging pile (e.g., 120kW);

[0069] Step 2: The virtual power plant platform issues the target power limit to the power control device based on the grid status. (e.g., 80kW) requires that the output power of the charging pile does not exceed ;

[0070] Step 3: Power command generation module verification ≤ (To ensure that the normal charging needs of electric vehicles are not affected), if the conditions are met, an analog power request signal is generated (the request value is...). And, it is sent to the charging station via the CAN bus;

[0071] Step 4: The charging station adjusts its output power to [the appropriate level] based on the simulated request signal. Meanwhile, the power control device forwards the status messages of the charging pile to the electric vehicle in real time to ensure that the electric vehicle's BMS can monitor the charging process normally.

[0072] Step 5: The safety monitoring module continuously monitors charging parameters. If any issues arise... > (e.g., changes in the state of the electric vehicle battery leading to...) If a decrease in power consumption or hardware failure occurs, immediately stop sending analog signals and restore direct communication between the electric vehicle and the charging station to ensure charging safety.

[0073] The software process can refer to the following:

[0074] Initialization phase:

[0075] After the power control unit is powered on, the CAN bus interaction module automatically sends a bus wake-up signal and reads the initialization message of the electric vehicle BMS (including...). Battery SOC, temperature, etc.) and charging pile capability messages (including (e.g., voltage range), and cache the data locally.

[0076] Normal regulation phase:

[0077] The virtual power plant platform distributes data via a 4G module. = 60kW (assuming this is the case) = 90kW, = 100kW);

[0078] The power command generation module verifies that 60kW≤90kW and generates a power request message conforming to the GB / T 27930 protocol (frame ID=0x1806E5F4, data field contains current / voltage parameters corresponding to 60kW).

[0079] The CAN bus interaction module sends the message to the charging pile, while simultaneously blocking the original power request issued by the electric vehicle BMS (to avoid conflicts).

[0080] After receiving the data, the charging pile adjusts the output power to 60kW and sends a status message via the CAN bus. The device then forwards the message to the electric vehicle's BMS.

[0081] Safety protection phase:

[0082] If the SOC of an electric vehicle increases, leading to Reduced to 50kW (at this time) = 60kW> The security monitoring module immediately triggers protection:

[0083] The relay switches to pass-through mode to restore direct CAN communication between the electric vehicle and the charging station;

[0084] Send an alarm message to the virtual power plant platform and request a re-issue. (Requires ≤50kW);

[0085] Waiting for the new = After the 40kW power supply was issued, it re-entered the regulation phase.

[0086] Compared with existing technologies, this invention has the following advantages: 1) Breaking limitations: It does not rely on open charging pile interfaces or backend cooperation, but achieves third-party control through intermediate layer analog signals, and is compatible with all DC charging piles that use CAN bus communication; 2) High safety: The simulated power request is always lower than the actual needs of electric vehicles, and retains the safety mechanisms of the original charging circuit (such as the overcharge protection of BMS), providing double protection for charging safety; 3) Fast response speed: The device interacts directly with the charging pile through the CAN bus, with a command transmission delay of ≤100ms, meeting the real-time scheduling needs of virtual power plants; 4) Strong compatibility: It can be adapted to different CAN protocols (such as GB / T 27930, CHAdeMO) through software configuration, without the need for a single dedicated module development.

[0087] The application provides a power control device of a direct current charging pile, which comprises: a first interface, used for connecting a communication bus between an electric vehicle and the direct current charging pile to obtain an actual power request of the electric vehicle; a second interface, used for communicating with a remote control platform to receive a power regulation instruction sent by the remote control platform; and a processor, electrically connected with the first interface and the second interface, used for: when a first power value carried by the power regulation instruction is less than or equal to a second power value carried by the actual power request, generating a simulated power request, wherein a third power value carried by the simulated power request is not greater than the first power value, and the simulated power request is used for instructing the direct current charging pile to charge the electric vehicle at the third power value; controlling the first interface to send the simulated power request to the direct current charging pile to modify and forward the actual power request of the electric vehicle to the direct current charging pile; and monitoring a preset abnormal condition, and stopping sending the simulated power request when the abnormal condition is met, so as to restore direct communication between the electric vehicle and the direct current charging pile. By using the power control device, the actual power request of the electric vehicle and the power regulation instruction sent by the remote control platform such as a virtual power plant can be obtained through the first interface and the second interface, so that when the first power value carried by the power regulation instruction is less than or equal to the second power value carried by the actual power request, the simulated power request is generated, and the simulated power request can be sent to the direct current charging pile directly without passing through a background management system to regulate the charging power provided by the direct current charging pile to the electric vehicle, so that the power control mode of the direct current charging pile is more flexible and efficient, and is beneficial to load balancing of a power grid; meanwhile, the preset abnormal condition monitoring and the automatic recovery of the direct communication safety fallback mechanism provide double safety protection for the charging process, and significantly improve the reliability of regulation.

[0088] Please refer to Figure 3 , Figure 3 The flow chart of the power control method of the direct current charging pile in the embodiment of the application is shown in FIG. 1. Figure 3 The power control method of the direct current charging pile comprises the following steps.

[0089] 301. An actual power request of an electric vehicle is obtained through a first interface of a communication bus connected between the electric vehicle and a direct current charging pile, and a power regulation instruction of a remote control platform is received through a second interface;

[0090] 302. When a first power value carried by the power regulation instruction is less than or equal to a second power value carried by the actual power request, a simulated power request is generated, wherein a third power value carried by the simulated power request is not greater than the first power value, and the simulated power request is used for instructing the direct current charging pile to charge the electric vehicle at the third power value;

[0091] 303、through the first interface to the direct current charging pile to send the analog power request, to modify and forward the actual power request of the electric vehicle to reach the direct current charging pile;

[0092] 304、monitoring the preset abnormal condition, and when the abnormal condition is met, stopping sending the analog power request, so that the electric vehicle and the direct current charging pile resume direct communication.

[0093] In a feasible implementation manner, the preset abnormal condition includes that the first power value carried by the power regulation instruction is greater than the second power value carried by the actual power request.

[0094] Need to be explained, Figure 3 The content of each step in the power control method shown is similar to Figure 2 The content of the power control device shown, to avoid repetition here, do not make superfluous, can refer to Figure 2 The content of the power control device shown.

[0095] The present application provides a kind of power control method of direct current charging pile, the power control method of direct current charging pile includes: through the first interface of communication bus between electric vehicle and direct current charging pile, the actual power request of electric vehicle is obtained, and the power regulation instruction of remote control platform is received by second interface;When the first power value carried by power regulation instruction is less than or equal to the second power value carried by actual power request, generate analog power request, wherein the third power value carried by analog power request is not greater than the first power value, and analog power request is used to indicate direct current charging pile to third power value to electric vehicle charge;Through the first interface to the direct current charging pile to send analog power request, to modify and forward the actual power request of electric vehicle to reach the direct current charging pile;Monitoring the preset abnormal condition, and when the abnormal condition is met, stopping sending analog power request, so that the electric vehicle and the direct current charging pile resume direct communication.Using the above power control method, the actual power request of electric vehicle and the power regulation instruction issued by virtual power plant etc. remote control platform can be obtained through the first interface and the second interface, so that when the first power value carried by the power regulation instruction is less than or equal to the second power value carried by the actual power request, the analog power request is generated, and the analog power request can be sent to the direct current charging pile without passing through the background management system to regulate the charging power provided by the direct current charging pile to the electric vehicle, so that the power control mode of direct current charging pile is more flexible and efficient, which is beneficial to the load balance of power grid;At the same time, the preset abnormal condition monitoring and automatic recovery of direct communication security backoff mechanism provides double security guarantee for charging process, and significantly improves the reliability of regulation.

[0096] Figure 4An internal structural diagram of a computer device in one embodiment is shown. This computer device can specifically be a terminal or a server. Figure 4 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and may also store a computer program, which, when executed by the processor, causes the processor to perform the aforementioned methods. The internal memory may also store a computer program, which, when executed by the processor, causes the processor to perform the aforementioned methods. Those skilled in the art will understand that… Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0097] In one embodiment, a computer device is provided, including a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform actions such as... Figure 3 The steps of the method shown.

[0098] In one embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, causes the processor to perform the following actions: Figure 3 The steps of the method shown.

[0099] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The program can be stored in a non-volatile computer readable storage medium, and when the program is executed, the processes of the above-mentioned embodiment methods can be included. Any reference to memory, storage, database, or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0100] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0101] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A power control device for a DC charging pile, characterized in that, The power control device includes: The first interface is used to connect to the communication bus between the electric vehicle and the DC charging pile to obtain the actual power request of the electric vehicle. The second interface is used to communicate with the remote control platform to receive power regulation commands issued by the remote control platform. A processor, electrically connected to the first interface and the second interface, is used for: When the first power value carried by the power control command is less than or equal to the second power value carried by the actual power request, a simulated power request is generated, wherein the third power value carried by the simulated power request is not greater than the first power value, and the simulated power request is used to instruct the DC charging pile to charge the electric vehicle with the third power value; The first interface is controlled to send the simulated power request to the DC charging pile, so as to modify and forward the actual power request of the electric vehicle to the DC charging pile; Monitor preset abnormal conditions, and when the abnormal conditions are met, stop sending the simulated power request so that the electric vehicle and the DC charging pile can resume direct communication; The preset abnormal conditions include: the first power value carried by the power control command is greater than the second power value carried by the actual power request.

2. The power control device according to claim 1, characterized in that, The power control device also includes a switching component; The processor is also used to control the state of the switching component, modify and forward the actual power request, and restore the direct communication.

3. The power control device according to claim 2, characterized in that, The switching component includes a relay; The normally closed contact of the relay is used to connect the electric vehicle and the DC charging pile to form the direct communication; the normally open contact of the relay is used to connect to the first interface. The processor is also used to drive the relay to operate, disconnect the normally closed contact and connect the normally open contact connected to the first interface, so as to send the analog power request to the DC charging pile, and modify and forward the actual power request to the DC charging pile.

4. The power control device according to claim 2, characterized in that, Controlling the state of the switching component to restore the direct communication includes: The processor restores direct communication by switching the state of the switching component to a transparent forwarding mode, in which the processor forwards messages received from the electric vehicle to the DC charging pile and messages received from the DC charging pile to the electric vehicle.

5. The apparatus according to claim 1, characterized in that, The processor is also configured to: forward the charging status message fed back by the DC charging pile to the electric vehicle via the first interface.

6. The apparatus according to claim 1, characterized in that, The first interface is a Controller Area Network (CAN) interface, and the communication bus is a CAN bus.

7. The apparatus according to claim 1, characterized in that, The second interface is a 4G communication module, a 5G communication module, or an Ethernet interface.

8. A power control method for a DC charging pile, characterized in that, The power control method includes: The actual power request of the electric vehicle is obtained through the first interface of the communication bus connected between the electric vehicle and the DC charging pile, and the power regulation command of the remote control platform is received through the second interface. When the first power value carried by the power control command is less than or equal to the second power value carried by the actual power request, a simulated power request is generated, wherein the third power value carried by the simulated power request is not greater than the first power value, and the simulated power request is used to instruct the DC charging pile to charge the electric vehicle with the third power value; The simulated power request is sent to the DC charging pile through the first interface to modify and forward the actual power request of the electric vehicle to the DC charging pile; Monitor preset abnormal conditions, and when the abnormal conditions are met, stop sending the simulated power request so that the electric vehicle and the DC charging pile can resume direct communication; The preset abnormal conditions include: the first power value carried by the power control command is greater than the second power value carried by the actual power request.

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