Vehicle reservation charging method, device and equipment and storage medium

Abstract

The invention discloses a vehicle reservation charging method, device and equipment and a storage medium, and relates to the technical field of vehicle energy management, and the vehicle reservation charging method comprises the steps that reservation charging information and current time are acquired, and reservation charging parameters are determined according to the reservation charging information, the reserved charging parameters comprise charging start time, a charging connection type and target electric quantity; a target charging strategy is determined according to the charging connection type, and the target charging strategy comprises an alternating current charging strategy and a direct current charging strategy; when the current time is the charging start time, charging a vehicle according to the target charging strategy to obtain the current electric quantity; and when the current electric quantity is the target electric quantity, charging is stopped, and vehicle reservation charging is completed. Unified reservation control of vehicle alternating current and direct current charging is realized, the problem that alternating current and direct current charging reservation is separated and depends on remote or specific charging piles is solved, and accurate execution of reservation charging is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle energy management, in particular to a vehicle reservation charging method, device, equipment and storage medium. BACKGROUND

[0002] Under the background of the gradual popularization of new energy vehicles, the intelligentization and convenience of the vehicle charging process have significantly improved. Users hope to be able to independently arrange charging tasks at different time periods to fully utilize the price difference of the power grid during peak and valley periods, and to achieve economic charging and energy regulation. The charging methods of new energy vehicles usually include alternating current charging and direct current charging, and the two methods have obvious differences in control logic, ownership and communication protocol.

[0003] In the traditional technical solution, the control right of alternating current charging is generally held by the whole vehicle, so that reservation charging can be realized through the whole vehicle human-machine interface or remote application, while the control right of direct current charging is usually held by the charging pile, and can only be set by relying on the interface of the charging pile itself, and cannot be uniformly controlled by the vehicle. When the vehicle is in a weak signal, remote communication module failure or charging pile does not support reservation function scene, the user cannot complete the reservation operation, resulting in the problem that the reservation charging function is limited in the actual use. Therefore, the traditional technical solution cannot simultaneously compatible with the reservation control of alternating current and direct current charging methods, and lacks full scene applicability.

[0004] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The main purpose of the present application is to provide a vehicle reservation charging method, device, equipment and storage medium, aiming at solving the technical problem of how to realize unified reservation charging control under different charging methods.

[0006] To achieve the above purpose, the present application provides a vehicle reservation charging method, which comprises: obtaining reservation charging information and current time, and determining reservation charging parameters according to the reservation charging information, wherein the reservation charging parameters include charging start time, charging connection type and target electric quantity; determining a target charging strategy according to the charging connection type, wherein the target charging strategy includes alternating current charging strategy and direct current charging strategy; when the current time is the charging start time, charging the vehicle according to the target charging strategy to obtain the current electric quantity; when the current electric quantity is the target electric quantity, stopping charging to complete the vehicle reservation charging.

[0007] In an embodiment, the step of charging the vehicle according to the target charging strategy to obtain the current power when the current time is the charging start time comprises: when the current time is the charging start time and the target charging strategy is an alternating current charging strategy, closing an alternating current charging relay, and determining an alternating current charging current demand according to the target power and a current charging capability of a vehicle battery; sending the alternating current charging current demand to a vehicle-mounted charger to enable the vehicle-mounted charger to charge the vehicle according to the alternating current charging current demand to obtain the current power.

[0008] In an embodiment, the step of charging the vehicle according to the target charging strategy to obtain the current power when the current time is the charging start time further comprises: when the current time is the charging start time and the target charging strategy is a direct current charging strategy, closing a direct current charging relay, and determining a direct current charging current demand according to the target power and a current charging capability of a vehicle battery; sending the direct current charging current demand to a charging pile to enable the charging pile to charge the vehicle according to the direct current charging current demand to obtain the current power.

[0009] In an embodiment, the step of closing the direct current charging relay when the current time is the charging start time and the target charging strategy is the direct current charging strategy further comprises: when the target charging strategy is the direct current charging strategy, obtaining a reserved charging time period and a to-be-charged current; when the current time is within the reserved charging time period and the current time has not reached the charging start time, determining a waiting charging instruction according to the to-be-charged current; sending the waiting charging instruction to the charging pile to enable the charging pile to adjust an output current to the to-be-charged current according to the waiting charging instruction.

[0010] In an embodiment, the step of determining the target charging strategy according to the charging connection type comprises: when it is determined that the charging connection type is an alternating current charging type, determining that the target charging strategy is an alternating current charging strategy; when it is determined that the charging connection type is a direct current charging type, determining whether a charging pile has a target current demand; when the charging pile does not have the target current demand, determining that the target charging strategy is a direct current charging strategy.

[0011] In an embodiment, the step of obtaining reserved charging information and a current time, and determining a reserved charging parameter according to the reserved charging information comprises: obtaining reservation charging information and a current time, wherein the reservation charging information comprises a charging start time, a target electric quantity and charging gun information; determining a charging connection type according to the charging gun information; determining reservation charging parameters according to the charging start time, the target electric quantity and the charging connection type.

[0012] In an embodiment, the step of determining the charging connection type according to the charging gun information comprises: determining a physical interface type identifier and a communication protocol type identifier of the charging gun according to the charging gun information; determining whether the physical interface type identifier belongs to a standard interface specification of an alternating current charging gun or a standard interface specification of a direct current charging gun; determining whether the communication protocol type identifier belongs to an alternating current charging communication protocol or a direct current charging communication protocol; when the physical interface type identifier belongs to the standard interface specification of the alternating current charging gun and the communication protocol type identifier belongs to the alternating current charging communication protocol, determining that the charging connection type is an alternating current charging type; when the physical interface type identifier belongs to the standard interface specification of the direct current charging gun and the communication protocol type identifier belongs to the direct current charging communication protocol, determining that the charging connection type is a direct current charging type.

[0013] In addition, to achieve the above object, the present application further provides a vehicle reservation charging device, which comprises a data acquisition module, configured to obtain reservation charging information and a current time, and determine reservation charging parameters according to the reservation charging information, wherein the reservation charging parameters comprise a charging start time, a charging connection type and a target electric quantity; a strategy determination module, configured to determine a target charging strategy according to the charging connection type, wherein the target charging strategy comprises an alternating current charging strategy and a direct current charging strategy; a vehicle charging module, configured to charge a vehicle according to the target charging strategy when the current time is the charging start time, to obtain a current electric quantity; a stop charging module, configured to stop charging when the current electric quantity is the target electric quantity, to complete vehicle reservation charging.

[0014] In addition, to achieve the above object, the present application further provides a vehicle reservation charging device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the vehicle reservation charging method as described above.

[0015] In addition, to achieve the above-mentioned purpose, the application further provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program is executed by a processor to implement the steps of the vehicle reservation charging method as described above.

[0016] In addition, to achieve the above-mentioned purpose, the application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps of the vehicle reservation charging method as described above.

[0017] The one or more technical solutions provided by the application have at least the following technical effects: Due to the adoption of the technical means that the reservation charging information and the current time are acquired first, and the reservation charging parameters including the charging start time, the charging connection type and the target power are determined according to the reservation charging information and the current time, the corresponding alternating current charging strategy or direct current charging strategy is determined according to the charging connection type, then the charging is performed according to the target charging strategy when the current time reaches the charging start time to obtain the current power, and finally the charging is stopped when the current power reaches the target power, the problems in the prior art that the new energy vehicle alternating current charging relies on the mobile phone remote operation and cannot be reserved when the signal is weak, the direct current charging relies on the charging pile display operation and cannot be supported through the whole vehicle end, and the alternating current and direct current charging reservation functions are separated, cannot cover the whole scene and are difficult to ensure the charging to be performed according to the reservation are solved. Compared with the prior art, the effect that the mobile phone remote operation or the specific charging pile is not needed, and the alternating current and direct current charging reservation can be uniformly controlled through the whole vehicle end to ensure the reservation charging to be accurately performed according to the set time and power and adapt to the whole scene alternating current and direct current charging demand is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, those skilled in the art can obtain other drawings from these drawings without any creative effort.

[0020] Figure 1 The flowchart provided for the vehicle reservation charging method embodiment one of the application; Figure 2 The flowchart provided for the vehicle reservation charging method embodiment two of the application; Figure 3 The module structure schematic diagram of the vehicle reservation charging device of the application embodiment; Figure 4A device structure schematic diagram of a hardware operating environment involved in a vehicle reservation charging method in the embodiments of the present application.

[0021] The purposes, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0023] In order to better understand the technical solutions of the present application, the specific embodiments will be described in detail below with reference to the drawings and the accompanying drawings.

[0024] The main solution of the embodiments of the present application is: obtaining reservation charging information and current time, and determining reservation charging parameters according to the reservation charging information, wherein the reservation charging parameters include charging start time, charging connection type and target power; determining a target charging strategy according to the charging connection type, wherein the target charging strategy includes alternating current charging strategy and direct current charging strategy; when the current time is the charging start time, charging the vehicle according to the target charging strategy to obtain the current power; when the current power is the target power, stopping charging to complete the vehicle reservation charging.

[0025] In the present embodiment, for the convenience of description, the following is described with the identification vehicle reservation charging device as the execution subject.

[0026] Since the prior art how to realize unified reservation charging control under different charging modes, the present application provides a solution, since the technical means of first obtaining reservation charging information and current time and determining reservation charging parameters containing charging start time, charging connection type and target power according to the reservation charging information, then determining the corresponding alternating current charging strategy or direct current charging strategy according to the charging connection type, then charging according to the target charging strategy to obtain the current power when the current time reaches the charging start time, and finally stopping charging when the current power reaches the target power, solves the problems in the prior art that new energy vehicle alternating current charging relies on mobile phone remote operation and cannot be reserved when the signal is weak and invalid, direct current charging relies on charging pile display operation and cannot be supported through the whole vehicle end, and alternating current and direct current charging reservation functions are separated, cannot cover all scenarios and are difficult to ensure that the charging is executed according to the reservation, compared with the prior art, the effect of realizing unified control of alternating current and direct current charging reservation through the whole vehicle end without relying on mobile phone remote or specific charging pile, ensuring accurate execution of reservation charging according to the set time and power, and adapting to the whole scenario alternating current and direct current charging demand is achieved.

[0027] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device, vehicle scheduled charging device, or vehicle controller capable of performing the above functions. The following description uses a vehicle controller as an example to illustrate this embodiment and the subsequent embodiments.

[0028] Based on this, this application provides a method for reserving vehicle charging, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the vehicle reservation charging method of this application.

[0029] In this embodiment, the vehicle pre-charging method includes steps S10 to S40: Step S10: Obtain the scheduled charging information and the current time, and determine the scheduled charging parameters based on the scheduled charging information, wherein the scheduled charging parameters include the charging start time, the charging connection type, and the target power. It should be noted that the scheduled charging information is the relevant information that the user enters through the instrument panel or the vehicle's large screen before leaving the vehicle and disconnecting the power. This information includes the user's desired charging start time, the information of the charging gun to be selected, and the target battery level, and is the basis for determining the scheduled charging parameters.

[0030] Additionally, the current time is real-time time data synchronized by the vehicle's internal timing module. This data is compared with the scheduled charging start time to determine whether the time to start charging has been reached, ensuring that charging is performed according to the scheduled time.

[0031] Furthermore, the scheduled charging parameters are a set of key parameters determined based on the scheduled charging information input by the user, including the charging start time, charging connection type, and target capacity. These parameters together guide the execution of the subsequent charging process.

[0032] Additionally, the charging start time is the specific moment when charging officially begins, extracted or calculated from the scheduled charging information. If the user directly sets the charging start time, then that time is the charging start time; if the user sets the charging end time, then the charging start time needs to be calculated based on the current state of the battery.

[0033] Additionally, the charging connection type is the charging method category determined based on the charging gun information in the scheduled charging information. It is divided into AC charging type and DC charging type, and different types correspond to different charging control logic and circuits.

[0034] In addition, the target electric quantity is an electric quantity level that the user expects the vehicle battery to reach after the charging is completed. The user can input a specific electric quantity value or select a target state of charge (SOC) percentage through the instrument panel or the large screen of the vehicle machine to set the target electric quantity. If the user does not actively set the target electric quantity, the full charging is used as the default target electric quantity.

[0035] It should be understood that the user can select the lowest charging price interval by querying the peak-valley price of the charging pile through the mobile phone or the vehicle machine (networking), and perform charging in the interval. The instrument panel or the large screen of the vehicle machine prompts the user with the start and end times of charging according to the user's selected charging time. After the user confirms the satisfaction, the instrument panel or the large screen of the vehicle machine sends the reservation charging time information to the charging pile for execution. If the user is not satisfied, the user can automatically set the charging start time or the charging end time.

[0036] It can be understood that the user operates the instrument panel or the large screen of the vehicle machine before the vehicle is powered off, inputs the reservation charging information containing the charging start time, the charging gun information and the target electric quantity value, and at the same time, the vehicle internal timing module obtains the real-time current time. Then the instrument panel or the large screen of the vehicle machine sends the obtained reservation charging information and the current time to the vehicle control unit (VCU). The VCU receives and analyzes the reservation charging information, determines the charging connection type according to the charging gun information in the reservation charging information, extracts or calculates the charging start time, and extracts the target electric quantity set by the user. Finally, the VCU integrates the charging start time, the charging connection type and the target electric quantity into the reservation charging parameters, and stores them in the internal storage module to provide parameter support for subsequent steps.

[0037] In step S20, a target charging strategy is determined according to the charging connection type, wherein the target charging strategy includes an alternating current charging strategy and a direct current charging strategy. It should be noted that the target charging strategy is a specific operation scheme for guiding the charging process, which includes an alternating current charging strategy and a direct current charging strategy. Each strategy has corresponding loop control, component interaction and current regulation logic.

[0038] It should be understood that the alternating current charging strategy is a charging operation scheme developed for alternating current charging type. The core content includes operation logic such as controlling the alternating current charging relay to be closed, enabling the on-board charger (OBC) to work, and adjusting the OBC output current according to the target electric quantity and current demand, to ensure that the alternating current charging is carried out in an orderly manner.

[0039] In addition, the direct current charging strategy is a charging operation scheme formulated for the direct current charging type, mainly including operation logic such as interacting with the charging pile according to a preset protocol standard, controlling the direct current charging relay to be closed, and sending a current request to the charging pile according to the reserved current demand, so as to guarantee the compliance of the direct current charging.

[0040] It can be understood that the VCU retrieves the reserved charging parameters from the internal storage module, extracts the charging connection type, and judges. If the charging connection type is determined to be an alternating current charging type, the alternating current charging strategy is determined as the target charging strategy, which specifies that the alternating current charging relay needs to be controlled to be closed, the OBC needs to be enabled, and the output current of the OBC needs to be adjusted in the future; if the charging connection type is determined to be a direct current charging type, the direct current charging strategy is determined as the target charging strategy, which specifies that the charging pile needs to be interacted with according to the standard, the direct current charging relay needs to be controlled to be closed, and the current request needs to be sent to the charging pile in the future.

[0041] In a possible implementation, step S20 can include: determining the target charging strategy as the alternating current charging strategy when it is determined that the charging connection type is the alternating current charging type; determining whether the charging pile has a target current demand when it is determined that the charging connection type is the direct current charging type; and determining the target charging strategy as the direct current charging strategy when the charging pile does not have the target current demand.

[0042] It should be noted that the alternating current charging type is one of the charging connection types, which refers to a charging mode category of connecting an alternating current charging pile through an alternating current charging gun, and corresponds to the need to enable the alternating current charging related circuit and control logic, and relies on the OBC (on-board charger) to convert alternating current into direct current to charge the battery.

[0043] In addition, the direct current charging type is another charging connection type, which refers to a charging mode category of connecting a direct current charging pile through a direct current charging gun, and does not need the OBC to convert the power, but directly outputs the direct current from the direct current charging pile to charge the battery, and corresponds to the need to enable the direct current charging related circuit and control logic.

[0044] It should be understood that the target current demand is a current adjustment limit existing in some direct current charging piles due to the hardware design characteristics, specifically referring to the demand that the charging pile has a fixed maximum output current and a minimum output current range, and cannot adjust the current beyond the range, or even cannot adjust the charging current to 0, which is a key basis for judging whether special adaptation is needed.

[0045] It can be understood that the VCU, i.e., the vehicle controller, first calls the pre-charge parameters determined in step S10, extracts the charging connection type and performs the first step judgment. If the judgment result is that the charging connection type is an alternating current charging type, the VCU directly determines the preset alternating current charging strategy as the target charging strategy, and the subsequent alternating current charging related components will be controlled according to the strategy. If the first step judgment result is that the charging connection type is a direct current charging type, the VCU starts to detect the target current demand of the charging pile: the VCU first establishes a preliminary communication connection with the to-be-connected direct current charging pile, receives the maximum output capacity CML information sent by the charging pile, and extracts the minimum output current parameter of the charging pile from the information; if the extracted minimum output current parameter is 0, i.e., the charging current can be adjusted to 0 and there is no adjustment limit beyond the range, the VCU determines that there is no target current demand of the charging pile, and then determines the preset direct current charging strategy as the target charging strategy. The VCU stores the finally determined target charging strategy in the internal strategy module, which provides a clear basis for subsequent step S30 of charging according to the strategy.

[0046] Step S30, when the current time is the charging start time, charging the vehicle according to the target charging strategy to obtain the current electric quantity; It can be understood that the VCU continuously obtains the current time through the internal timing module and compares it with the charging start time in real time. When it is monitored that the current time reaches the charging start time, the VCU calls the target charging strategy from the internal strategy module. If the target charging strategy is an alternating current charging strategy, the VCU sends a control signal to the PDU, i.e., the high-voltage power distribution box, to close the alternating current charging relay, sends an enable instruction to the OBC to start the OBC, and sends a current adjustment request to the OBC according to the target electric quantity and the current charging capacity of the vehicle battery, and the OBC adjusts the output current according to the request to charge the battery; if the target charging strategy is a direct current charging strategy, the VCU first completes the handshake, charging parameter negotiation and other interaction processes with the charging pile according to the preset standard, then sends a control signal to the high-voltage power distribution box (Power Distribution Unit, PDU) to close the direct current charging relay, and sends a current request to the charging pile according to the pre-ordered current demand and the battery charging capacity, and the charging pile controls the output current according to the request to charge the battery. In the whole charging process, the VCU receives the current electric quantity data sent by the BMS in real time and continuously masters the battery electric quantity change.

[0047] In a possible implementation, step S30 can include steps S31-S32: Step S31, when the current time is the charging start time and the target charging strategy is an alternating current charging strategy, closing the alternating current charging relay, and determining the alternating current charging current demand according to the target electric quantity and the current charging capacity of the vehicle battery; It should be noted that the alternating current charging relay is an electrical switching component arranged in the alternating current charging circuit of the vehicle, used to control the conduction and disconnection of the alternating current charging circuit. When closed, it can make the electric energy output by the alternating current charging pile transmitted to the on-board charger through the circuit. When disconnected, it cuts off the transmission path, which is the key control component of the alternating current charging process.

[0048] It should be understood that the current charging capacity of the vehicle battery refers to the maximum capacity of the vehicle battery to receive charging current in the current state, which is determined in combination with the current temperature, current SOC (State of Charge) and battery health degree and other parameters, directly affects the setting of the upper limit of the alternating current charging current demand, and ensures that the battery will not be damaged due to overcurrent during charging.

[0049] It can be understood that the VCU first continuously monitors the current time through the internal timing module, and compares the current time with the charging start time in real time. When the current time reaches the charging start time and the target charging strategy determined in step S20 is the alternating current charging strategy, the VCU sends a control signal to the PDU, i.e. the high-voltage distribution box, to close the alternating current charging relay, so that the alternating current charging circuit is in a conduction state, and prepares for subsequent power transmission. Then, the VCU communicates with the BMS, i.e. the battery controller, to obtain the current temperature, current SOC and battery health degree of the vehicle battery, and calculates the current charging capacity of the vehicle battery in combination with these parameters. At the same time, the alternating current charging current demand that meets the current charging scenario is calculated by comprehensively considering the target electric quantity and the current charging capacity of the vehicle battery, so as to ensure that the current demand will not exceed the battery bearing range, and can efficiently charge to the target electric quantity.

[0050] In step S32, the alternating current charging current demand is sent to the on-board charger, so that the on-board charger charges the vehicle according to the alternating current charging current demand to obtain the current electric quantity.

[0051] It should be noted that the alternating current charging current demand is a current value calculated by the VCU, i.e. the vehicle controller, according to the target electric quantity and the current charging capacity of the vehicle battery, which is used to guide the on-board charger to adjust the output current, both to meet the demand of charging the battery at a reasonable speed and to avoid exceeding the current charging capacity of the battery to cause safety risks.

[0052] It should be understood that the on-board charger is a device inside the vehicle for converting alternating current electric energy into direct current electric energy. It can receive the alternating current charging current demand instruction sent by the VCU, adjust the size of the converted direct current according to the instruction, and provide the vehicle battery with suitable charging electric energy. It is the core electric energy conversion component in the alternating current charging process.

[0053] It can be understood that the VCU sends the calculated AC charging current demand to the on-board charger in the form of an instruction. After receiving the instruction, the on-board charger starts the power conversion work, converts the AC power transmitted through the AC charging loop into DC power, and adjusts the size of the converted DC current according to the AC charging current demand. After the adjustment is completed, the on-board charger delivers the adapted DC power to the vehicle battery to charge the battery. During the charging process, the BMS monitors the current power of the vehicle battery in real time and continuously sends the current power data to the VCU, so that the VCU can master the charging progress in real time until the current power of the vehicle battery reaches the target power.

[0054] In a feasible implementation, step S32 can include steps S321-S322: Step S321, when the current time is the charging start time and the target charging strategy is a DC charging strategy, closing the DC charging relay, and determining a DC charging current demand according to the target power and the current charging capability of the vehicle battery. It should be noted that the DC charging current demand is a current value calculated by the VCU according to the target power and the current charging capability of the vehicle battery, which is used to send a current request to the charging pile to ensure that the current output by the charging pile can meet the demand of efficient charging to reach the target power, and will not exceed the safe bearing range of the vehicle battery.

[0055] It can be understood that the VCU first continuously monitors the current time and compares it with the charging start time. When it is confirmed that the current time reaches the charging start time and the determined target charging strategy is a DC charging strategy, the VCU sends a control signal to the PDU to close the DC charging relay, so that the DC charging loop of the vehicle is in a conducting state, and prepares to receive the power output by the charging pile. Subsequently, the VCU establishes communication with the BMS to obtain the current temperature, current SOC and battery health status of the vehicle battery and other parameters, calculates the current charging capability of the vehicle battery according to these parameters. At the same time, combined with the target power and the current charging capability of the vehicle battery, the adapted DC charging current demand is calculated to ensure that the current demand is within the safe bearing range of the battery and can efficiently promote the charging process.

[0056] Step S322, sending the DC charging current demand to the charging pile to charge the vehicle according to the DC charging current demand, and obtaining the current power.

[0057] It can be understood that the VCU first completes the handshake, charging parameter negotiation and other early interaction processes with the charging pile according to the preset standard, to ensure that the communication between the two is normal and the basic conditions for charging are met. Subsequently, the VCU sends the direct current charging current demand to the charging pile in the form of an instruction. After receiving the instruction, the charging pile judges in combination with its maximum output capacity. If the output capacity of the charging pile can meet the demand of the direct current charging current, the charging pile adjusts the size of the output direct current according to the demand. If the output capacity of the charging pile cannot meet the demand, the charging pile adjusts the current according to the maximum output capacity. After the adjustment is completed, the charging pile delivers the adapted direct current energy to the vehicle battery through the direct current charging circuit that has been turned on, to charge the battery. During the charging process, the BMS monitors the current power of the vehicle battery in real time, and continuously sends the current power data to the VCU, so that the VCU can master the charging progress in real time.

[0058] In a feasible implementation, before step S321, the method can further include: when the target charging strategy is a direct current charging strategy, obtaining a reserved charging time period and a to-be-charged current; when the current time is within the reserved charging time period and the current time has not reached the charging start time, determining a waiting charging instruction according to the to-be-charged current; and sending the waiting charging instruction to the charging pile, so that the charging pile adjusts an output current to the to-be-charged current according to the waiting charging instruction.

[0059] It should be noted that the reserved charging time period is a time interval determined around the charging start time in the reserved charging parameter, and specifically refers to a whole period from when the user completes the reserved charging setting and inserts the direct current charging gun to when the charging is completed after the charging start time. The time period includes a pre-charging period and an official charging period, and is a time basis for determining whether to perform the waiting charging operation.

[0060] In addition, the to-be-charged current is a special current value set in the waiting charging phase, which is set to 0 in this embodiment, to ensure that the charging pile keeps the charging circuit turned on but does not output effective charging current during the waiting charging period, to avoid early charging affecting the reservation plan, while meeting the basic work requirements of the connected charging pile.

[0061] Further, the waiting charging instruction is a control instruction generated by the VCU according to the to-be-charged current, to inform the charging pile that the current is in the waiting charging phase and needs to adjust the output current to the to-be-charged current according to the instruction. The instruction conforms to the communication specification related to direct current charging, to ensure that the charging pile can accurately identify and execute.

[0062] It can be understood that when the VCU determines that the target charging strategy is the direct current charging strategy, the reservation charging time period and the to-be-charged current are extracted from the stored reservation charging related parameters and settings. Then, the VCU acquires the current time through an internal timing module in real time, and compares the current time with the reservation charging time period and the charging start time respectively.

[0063] Further, if the current time is in the reservation charging time period and the current time has not reached the charging start time, that is, in the pre-stage period of waiting for charging, the VCU determines the waiting for charging instruction according to the to-be-charged current. Then, the VCU establishes a preliminary communication connection with the charging pile, and sends the generated waiting for charging instruction to the charging pile. After receiving the waiting for charging instruction, the charging pile analyzes the current adjustment requirement in the instruction, adjusts the output module, and adjusts the output current to the to-be-charged current. At this time, the charging pile and the vehicle maintain the conduction state of the charging loop, but do not output the effective charging current, until the current time reaches the charging start time Step S40, when the current power is the target power, stopping charging, completing the vehicle reservation charging.

[0064] It should be understood that stopping charging means that when the current power of the vehicle battery reaches the target power, the operation of supplementing the power of the battery is terminated by controlling the action of the related components and disconnecting the charging loop, which is the final link of the charging process, and needs to ensure the safety and order of the operation.

[0065] It can be understood that the VCU continuously compares the real-time acquired current power with the target power. When it is monitored that the current power reaches the target power, the VCU determines that the charging is completed, and then executes the stopping charging operation. If the current execution is alternating current charging, the VCU sends a control signal to the PDU to disconnect the alternating current charging relay, and sends a stop working instruction to the OBC; if the current execution is direct current charging, the VCU sends a control signal to the PDU to disconnect the direct current charging relay, and sends a stop charging request to the charging pile. After confirming that the charging loop is disconnected and the related components have stopped working, the VCU records the charging related data of this time, and the whole vehicle reservation charging process is formally completed.

[0066] The embodiment provides a vehicle reservation charging method. A user inputs reservation charging information including a charging start time, a charging connection type and a target power and the like through an instrument or a large screen of a vehicle before the vehicle is powered off. A vehicle internal timing module acquires a current time in real time and compares the current time with the reservation time. A vehicle control unit VCU determines the charging connection type, i.e. alternating current or direct current, according to the reservation charging information, and selects a corresponding target charging strategy, i.e. an alternating current charging strategy or a direct current charging strategy. When the current time reaches the charging start time, the VCU controls relevant components to act according to the target charging strategy, such as closing an alternating current charging relay, starting an on-board charger OBC or closing a direct current charging relay, so as to realize charging of the vehicle and monitor the current power in real time. When the current power reaches the target power, the VCU performs a stop charging operation, disconnects a charging loop and stops the relevant components from working, so as to complete the reservation charging, and solves the problems in the prior art that a new energy vehicle is limited in reservation charging in alternating current and direct current charging scenarios, charging parameters cannot be flexibly set, and different charging pile characteristics cannot be adapted to.

[0067] Based on the first embodiment of the application, in the second embodiment of the application, the same or similar contents as the above embodiment one can refer to the above introduction, and the following will not be described in detail. On this basis, please refer to Figure 2 , the step S10 of the vehicle reservation charging method comprises steps S11-S13: Step S11, acquiring reservation charging information and a current time, wherein the reservation charging information comprises a charging start time, a target power and charging gun information; It should be noted that the reservation charging information is a key information set actively input by a user through a vehicle instrument or a large screen of a vehicle before the user leaves the vehicle and is powered off, and is used to initiate charging reservation. The reservation charging information contains a charging start time at which the user expects to start charging, a target power at which the user hopes that the battery reaches after charging is completed, and charging gun information related to a connected charging device. The charging gun information is basic input data for determining a charging connection type and reservation charging parameters.

[0068] In addition, the current time is time data acquired in real time by a vehicle internal timing module. The data forms a comparison relationship with the charging start time set by the user, is used to judge whether a time node at which charging is started is reached subsequently, and is a core time basis for guaranteeing that reservation charging is executed according to a time plan.

[0069] It should be understood that the charging gun information is characteristic data related to a charging gun inserted into a charging interface of the vehicle. The charging gun information contains key information such as a physical interface specification of the charging gun and a communication protocol type. The information directly determines a charging mode to be adopted by the vehicle and is a key basis for distinguishing alternating current charging from direct current charging.

[0070] Step S12, determining a charging connection type according to the charging gun information; It can be understood that the VCU identifies the physical interface specification in the charging gun information, judges whether the interface meets the standard specification of the alternating current charging gun or the standard specification of the direct current charging gun; then, the VCU verifies the communication protocol type in the charging gun information, judges whether it matches the special communication protocol corresponding to the alternating current charging or the standard protocol corresponding to the direct current charging; if the physical interface specification and the communication protocol type of the charging gun both point to the alternating current charging related standard, the VCU determines that the charging connection type is the alternating current charging type; if both point to the direct current charging related standard, the VCU determines that the charging connection type is the direct current charging type, and then stores the determined charging connection type to the internal storage module.

[0071] In a feasible implementation, step S12 can include: determining the physical interface type identifier and the communication protocol type identifier of the charging gun according to the charging gun information; determining whether the physical interface type identifier belongs to the standard interface specification of the alternating current charging gun or the standard interface specification of the direct current charging gun; determining whether the communication protocol type identifier belongs to the alternating current charging communication protocol or the direct current charging communication protocol; when the physical interface type identifier belongs to the standard interface specification of the alternating current charging gun and the communication protocol type identifier belongs to the alternating current charging communication protocol, determining that the charging connection type is the alternating current charging type; when the physical interface type identifier belongs to the standard interface specification of the direct current charging gun and the communication protocol type identifier belongs to the direct current charging communication protocol, determining that the charging connection type is the direct current charging type.

[0072] It should be noted that the physical interface type identifier is characteristic data in the charging gun information for representing the physical interface specification of the charging gun, usually exists in the form of specific coding or parameters, directly corresponds to the standard interface structure of the alternating current or direct current charging gun, and is the core identifier for distinguishing the hardware type of the charging gun.

[0073] In addition, the communication protocol type identifier is characteristic data in the charging gun information for representing the protocol followed by the charging gun and the vehicle for communication, also exists in the form of coding or protocol version information, corresponds to the special communication protocol in the alternating current charging or direct current charging scene, and is the key identifier for ensuring the communication compatibility between the pile and the vehicle.

[0074] Further, the standard interface specification of the alternating current charging gun is the unified technical requirement of the physical interface of the alternating current charging gun formulated by the state or industry, including the pin number, shape, size and layout of the interface and other parameters.

[0075] Further, the standard interface specification of the direct current charging gun is the unified technical requirement of the physical interface for the direct current charging scene, and compared with the alternating current charging gun interface, the pin layout and size design are more suitable for large current transmission, for example, the special large current interface of the national standard direct current charging gun meets the specification.

[0076] It should be understood that the alternating current charging communication protocol is a rule system followed by data interaction between the charging gun and the vehicle in the alternating current charging scene, which specifies the communication logic of charging parameter transmission and state feedback, and ensures the accuracy and safety of data interaction in the alternating current charging process.

[0077] In addition, the direct current charging communication protocol is a special data interaction rule system in the direct current charging scene.

[0078] It can be understood that the VCU extracts the physical interface type identifier and the communication protocol type identifier used to distinguish the type of the charging gun from the charging gun information obtained by the VCU, and the two identifiers are the core basis for judging the charging connection type. Then, the VCU matches and judges the physical interface type identifier, compares it with the preset alternating current charging gun standard interface specification parameter and direct current charging gun standard interface specification parameter respectively, and determines to which interface specification of the charging gun the identifier belongs.

[0079] Further, the VCU verifies the communication protocol type identifier, compares it with the stored alternating current charging communication protocol characteristics and direct current charging communication protocol characteristics, and determines the communication protocol category corresponding to the identifier. If the physical interface type identifier matches the standard interface specification of the alternating current charging gun, and the communication protocol type identifier matches the alternating current charging communication protocol, the VCU determines that the charging connection type is the alternating current charging type; if the physical interface type identifier matches the standard interface specification of the direct current charging gun, and the communication protocol type identifier matches the direct current charging communication protocol, the VCU determines that the charging connection type is the direct current charging type. Finally, the VCU stores the determined charging connection type to the internal module, which provides the basis for matching the target charging strategy in the subsequent steps.

[0080] Step S13, determining the reservation charging parameter according to the charging start time, the target electric quantity and the charging connection type.

[0081] It can be understood that the VCU standardizes the charging start time, the target electric quantity and the charging connection type, converts the charging start time into a unified time format, standardizes the unit of the target electric quantity, and defines the identification of the charging connection type; the VCU integrates the processed charging start time, target electric quantity and charging connection type into a structured reservation charging parameter, and stores it to the internal specified parameter storage area, so as to be directly called and used in the subsequent steps, and to lay a data foundation for the determination of the target charging strategy and the control of the charging process.

[0082] The embodiment provides a vehicle reservation charging method, wherein a user inputs reservation charging information including a charging start time, a target electric quantity and charging gun information through an instrument or a large screen of a vehicle before the vehicle is powered off. A vehicle internal timing module acquires a current time in real time and compares the current time with a reservation time. A VCU accurately judges a charging connection type as alternating current charging or direct current charging according to a physical interface type identifier and a communication protocol type identifier of the charging gun, and stores the result. Then, the VCU integrates the charging start time, the target electric quantity and the charging connection type into reservation charging parameters, so as to solve the technical problems that the alternating current charging and the direct current charging type cannot be accurately distinguished and the reservation charging parameters are difficult to be accurately set in the prior art. Through the above technical means, the embodiment realizes the functions of accurately identifying the charging type and setting the reservation charging parameters, improves the automation and intelligent level of the charging process, enhances the user experience, and ensures the safety and reliability of the charging process.

[0083] It should be noted that the above examples are only used for understanding the present application and do not constitute a limitation on the vehicle reservation charging method of the present application. More forms of simple transformation based on the technical concept are within the protection scope of the present application.

[0084] The present application also provides a vehicle reservation charging device, please refer to Figure 3 The vehicle reservation charging device comprises: A data acquisition module 10 is configured to acquire reservation charging information and a current time, and determine reservation charging parameters according to the reservation charging information, wherein the reservation charging parameters comprise a charging start time, a charging connection type and a target electric quantity. A strategy determination module 20 is configured to determine a target charging strategy according to the charging connection type, wherein the target charging strategy comprises an alternating current charging strategy and a direct current charging strategy. A vehicle charging module 30 is configured to charge a vehicle according to the target charging strategy when the current time is the charging start time, so as to obtain a current electric quantity. A stop charging module 40 is configured to stop charging when the current electric quantity is the target electric quantity, so as to complete vehicle reservation charging.

[0085] The vehicle reservation charging device provided by the present application adopts the vehicle reservation charging method in the above embodiment, and can solve the technical problem of how to realize unified reservation charging control under different charging modes. Compared with the prior art, the vehicle reservation charging device provided by the present application has the same beneficial effects as the vehicle reservation charging method provided by the above embodiment, and other technical features in the vehicle reservation charging device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0086] In an embodiment, the vehicle charging module 30 is further configured to, when the current time is the charging start time and the target charging strategy is an alternating current charging strategy, turn off an alternating current charging relay, and determine an alternating current charging current demand according to the target electric quantity and a current charging capability of a vehicle battery; send the alternating current charging current demand to a vehicle-mounted charger, so that the vehicle-mounted charger charges the vehicle according to the alternating current charging current demand to obtain a current electric quantity.

[0087] In an embodiment, the vehicle charging module 30 is further configured to, when the current time is the charging start time and the target charging strategy is a direct current charging strategy, turn off a direct current charging relay, and determine a direct current charging current demand according to the target electric quantity and a current charging capability of a vehicle battery; send the direct current charging current demand to a charging pile, so that the charging pile charges the vehicle according to the direct current charging current demand to obtain a current electric quantity.

[0088] In an embodiment, the vehicle charging module 30 is further configured to, when the target charging strategy is a direct current charging strategy, acquire a reserved charging time period and a to-be-charged current; when the current time is in the reserved charging time period and the current time has not reached the charging start time, determine a waiting charging instruction according to the to-be-charged current; send the waiting charging instruction to the charging pile, so that the charging pile adjusts an output current to the to-be-charged current according to the waiting charging instruction.

[0089] In an embodiment, the strategy determination module 20 is further configured to, when determining that the charging connection type is an alternating current charging type, determine that the target charging strategy is an alternating current charging strategy; when determining that the charging connection type is a direct current charging type, determine whether the charging pile has a target current demand; and when the charging pile does not have the target current demand, determine that the target charging strategy is a direct current charging strategy.

[0090] In an embodiment, the data acquisition module 10 is further configured to acquire reserved charging information and a current time, wherein the reserved charging information includes a charging start time, a target electric quantity, and charging gun information; determine a charging connection type according to the charging gun information; and determine a reserved charging parameter according to the charging start time, the target electric quantity, and the charging connection type.

[0091] In an embodiment, the data acquisition module 10 is further configured to determine the physical interface type identifier and the communication protocol type identifier of the charging gun according to the charging gun information; determine whether the physical interface type identifier belongs to a standard interface specification of an alternating current charging gun or a standard interface specification of a direct current charging gun; determine whether the communication protocol type identifier belongs to an alternating current charging communication protocol or a direct current charging communication protocol; determine that the charging connection type is an alternating current charging type when the physical interface type identifier belongs to the standard interface specification of the alternating current charging gun and the communication protocol type identifier belongs to the alternating current charging communication protocol; and determine that the charging connection type is a direct current charging type when the physical interface type identifier belongs to the standard interface specification of the direct current charging gun and the communication protocol type identifier belongs to the direct current charging communication protocol.

[0092] The application provides a vehicle reservation charging device, which comprises at least one processor and a memory connected with the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the vehicle reservation charging method in the above embodiment one.

[0093] Reference will be made to the following description of the embodiments of the application. Figure 4 which shows a structural diagram of a vehicle reservation charging device suitable for implementing the embodiments of the application. The vehicle reservation charging device in the embodiments of the application can include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Media Player), vehicle-mounted terminals (for example, vehicle-mounted navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. Figure 4 The vehicle reservation charging device shown is merely an example, and should not bring any limitation to the functions and use range of the embodiments of the application.

[0094] As Figure 4As shown, the vehicle reservation charging device can include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.) that can perform various appropriate actions and processes according to programs stored in a ROM (Read Only Memory) 1002 or programs loaded from a storage device 1003 into a RAM (Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the vehicle reservation charging device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; the storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the vehicle reservation charging device to communicate wirelessly or wired with other devices to exchange data. Although the vehicle reservation charging device with various systems is shown in the figure, it should be understood that all the shown systems are not required to be implemented or possessed. More or less systems can be alternatively implemented or possessed.

[0095] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program codes for executing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of the embodiments disclosed in the present application are performed.

[0096] The vehicle reservation charging device provided in the present application adopts the vehicle reservation charging method in the above-mentioned embodiments, and can solve the technical problem of how to realize unified reservation charging control under different charging modes. Compared with the prior art, the vehicle reservation charging device provided in the present application has the same beneficial effects as the vehicle reservation charging method provided in the above-mentioned embodiments, and other technical features in the vehicle reservation charging device are the same as the features disclosed in the previous embodiment method, which will not be described here.

[0097] It should be understood that various aspects of the disclosure can be implemented in hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any appropriate manner in any one or more embodiments or examples.

[0098] The above description is merely illustrative of the application and is not intended to limit the scope of the application. Any variations and modifications that can be made by any person skilled in the art within the spirit and scope of the application are intended to be encompassed by the application. Therefore, the scope of the application should be determined by the scope of the claims.

[0099] The application provides a computer readable storage medium having stored thereon computer readable program instructions (i.e., a computer program) for performing the vehicle reservation charging method in the above embodiments.

[0100] The computer readable storage medium provided by the application may, for example, be a U disk, but is not limited to an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination thereof. More specific examples of the computer readable storage medium can include, but are not limited to, an electric connection having one or more conductive wires, a portable computer disk, a hard disk, a RAM (Random Access Memory), a ROM (Read Only Memory), an erasable programmable read-only memory (Erasable Programmable Read Only Memory or flash memory, EPROM), an optical fiber, a CD-ROM (CD-Read Only Memory), an optical storage device, a magnetic storage device, or any appropriate combination thereof. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer readable storage medium can be transmitted by any appropriate medium, including but not limited to an electric wire, an optical cable, an RF (Radio Frequency), etc., or any appropriate combination thereof.

[0101] The above computer readable storage medium can be contained in the vehicle reservation charging device; or can exist separately without being assembled into the vehicle reservation charging device.

[0102] The computer readable storage medium described above carries one or more programs, when the one or more programs are executed by the vehicle reservation charging device, cause the vehicle reservation charging device to: acquire reservation charging information and a current time, and determine a reservation charging parameter according to the reservation charging information, wherein the reservation charging parameter includes a charging start time, a charging connection type, and a target electric quantity; determine a target charging strategy according to the charging connection type, wherein the target charging strategy includes an alternating current charging strategy and a direct current charging strategy; when the current time is the charging start time, charge the vehicle according to the target charging strategy to obtain a current electric quantity; and when the current electric quantity is the target electric quantity, stop charging to complete the vehicle reservation charging.

[0103] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0104] The flow diagrams and the block diagrams in the drawings are illustrations of architectures, functionalities, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a procedure, or a part of code, which comprises one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or in the reverse order, depending on the functionality involved. It is also noted that each block of the block diagrams and / or flow diagrams and combinations of blocks in the block diagrams and / or flow diagrams can be implemented by dedicated hardware-based systems that perform the specified functions or operations, or by combinations of dedicated hardware and computer instructions.

[0105] The modules described in the embodiments of the present application can be implemented in the form of software or in the form of hardware. In some cases, the names of the modules do not constitute a limitation on the modules themselves.

[0106] The readable storage medium provided by the present application is a computer readable storage medium, which stores computer readable program instructions (i.e., a computer program) for executing the vehicle reservation charging method described above, and can solve the technical problem of how to achieve unified reservation charging control under different charging modes. Compared with the prior art, the computer readable storage medium provided by the present application has the same beneficial effects as the vehicle reservation charging method provided by the above embodiments, and will not be described here.

[0107] The present application also provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the vehicle reservation charging method as described above.

[0108] The computer program product provided by the present application can solve the technical problem of how to achieve unified reservation charging control under different charging modes. Compared with the prior art, the computer program product provided by the present application has the same beneficial effects as the vehicle reservation charging method provided by the above embodiments, and will not be described here.

[0109] The above only describes some embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the present application, and the contents of the present application and the accompanying drawings are included in the patent protection scope of the present application.

Claims

1. A vehicle reservation charging method characterized by comprising: The method comprises: obtaining reservation charging information and current time, and determining reservation charging parameters according to the reservation charging information, wherein the reservation charging parameters comprise charging start time, charging connection type and target electric quantity; determining a target charging strategy according to the charging connection type, wherein the target charging strategy comprises alternating current charging strategy and direct current charging strategy; when the current time is the charging start time, charging the vehicle according to the target charging strategy to obtain current electric quantity; when the current electric quantity is the target electric quantity, stopping charging to complete vehicle reservation charging.

2. The method of claim 1, wherein, The step of charging the vehicle according to the target charging strategy to obtain current electric quantity when the current time is the charging start time comprises: when the current time is the charging start time and the target charging strategy is alternating current charging strategy, closing alternating current charging relay, and determining alternating current charging current demand according to the target electric quantity and current charging capacity of the vehicle battery; sending the alternating current charging current demand to the vehicle-mounted charger to make the vehicle-mounted charger charge the vehicle according to the alternating current charging current demand to obtain current electric quantity.

3. The method of claim 1, wherein, The step of charging the vehicle according to the target charging strategy to obtain current electric quantity when the current time is the charging start time further comprises: when the current time is the charging start time and the target charging strategy is direct current charging strategy, closing direct current charging relay, and determining direct current charging current demand according to the target electric quantity and current charging capacity of the vehicle battery; sending the direct current charging current demand to the charging pile to make the charging pile charge the vehicle according to the direct current charging current demand to obtain current electric quantity.

4. The method of claim 3, wherein, The step of closing direct current charging relay when the current time is the charging start time and the target charging strategy is direct current charging strategy further comprises: when the target charging strategy is direct current charging strategy, obtaining reservation charging time period and to-be-charged current; when the current time is in the reservation charging time period and the current time has not reached the charging start time, determining a waiting charging instruction according to the to-be-charged current; sending the waiting charging instruction to the charging pile to make the charging pile adjust output current to the to-be-charged current according to the waiting charging instruction.

5. The method of claim 1, wherein, The step of determining a target charging strategy according to the charging connection type comprises: when it is determined that the charging connection type is alternating current charging type, determining that the target charging strategy is alternating current charging strategy; when it is determined that the charging connection type is direct current charging type, determining whether the charging pile has target current demand; when the charging pile does not have the target current demand, determining that the target charging strategy is direct current charging strategy.

6. The method of claim 1, wherein, The step of obtaining reservation charging information and current time, and determining reservation charging parameters according to the reservation charging information comprises: obtaining reservation charging information and current time, wherein the reservation charging information comprises charging start time, target electric quantity and charging gun information; determining charging connection type according to the charging gun information; The reservation charging parameter is determined according to the charging start time, the target electric quantity and the charging connection type.

7. The method of claim 6, wherein, The step of determining the charging connection type according to the charging gun information comprises: The physical interface type identifier and the communication protocol type identifier of the charging gun are determined according to the charging gun information; It is determined whether the physical interface type identifier belongs to a standard interface specification of an alternating current charging gun or a standard interface specification of a direct current charging gun; It is determined whether the communication protocol type identifier belongs to an alternating current charging communication protocol or a direct current charging communication protocol; When the physical interface type identifier belongs to the standard interface specification of the alternating current charging gun and the communication protocol type identifier belongs to the alternating current charging communication protocol, it is determined that the charging connection type is an alternating current charging type; When the physical interface type identifier belongs to the standard interface specification of the direct current charging gun and the communication protocol type identifier belongs to the direct current charging communication protocol, it is determined that the charging connection type is a direct current charging type.

8. A vehicle reservation charging device characterized by comprising: The device comprises: A data acquisition module is configured to acquire reservation charging information and a current time, and determine a reservation charging parameter according to the reservation charging information, wherein the reservation charging parameter comprises a charging start time, a charging connection type and a target electric quantity; A strategy determination module is configured to determine a target charging strategy according to the charging connection type, wherein the target charging strategy comprises an alternating current charging strategy and a direct current charging strategy; A vehicle charging module is configured to charge a vehicle according to the target charging strategy when the current time is the charging start time, to obtain a current electric quantity; A stop charging module is configured to stop charging when the current electric quantity is the target electric quantity, to complete reservation charging of the vehicle.

9. A vehicle reservation charging device characterized by comprising: The device comprises a memory, a processor and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the vehicle reservation charging method according to any one of claims 1 to 7.

10. A storage medium, characterized by The storage medium is a computer readable storage medium, and the storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the vehicle reservation charging method according to any one of claims 1 to 7.

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