Charging pile, charging pile system, control method and storage medium

Abstract

The invention discloses a charging pile, a charging pile system, a control method and a storage medium. When a certain power circuit is forbidden and the output power of the charging interface is reduced, the controller can actively negotiate with the charging vehicle and adjust the charging power. When the maximum output power of the charging interface is larger than or equal to the input power requested by the charging vehicle, charging is conducted according to the power requested by the charging vehicle, and the charging requirement of the charging vehicle is met. And when the maximum output power of the charging interface is smaller than the input power requested by the charging vehicle, charging is carried out according to the maximum output power of the charging interface, and the charging power is provided for the charging vehicle to the maximum extent. Through interaction negotiation between the charging pile and the charging vehicle, interruption of the charging service caused by forbidding of the power unit is avoided. And under the condition that a part of power circuits are unavailable, the charging continuity can be ensured. The charging power is determined and selected according to the relationship between the maximum output power of the charging interface and the input power requested by the charging vehicle, and the charging efficiency is ensured.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a charging pile, a charging pile system, a control method and a storage medium. Background Art

[0002] With the popularity of electric vehicles, charging piles, as key infrastructure, are widely used in homes, public parking lots, highway service areas and other scenarios to provide convenient charging services for electric vehicles. Charging piles need to efficiently manage multiple charging interfaces and power circuits to ensure the safety and stability of the charging process.

[0003] Charging piles usually consist of multiple parallel power circuits and multiple charging interfaces. The power circuits supply power to the vehicle battery through the charging interfaces. During the charging process, if a power circuit fails, the charging power may drop. The charging pile often directly cuts off the output or switches to a fixed derating mode, affecting the reliability of the charging pile and the user experience. Summary of the invention

[0004] In view of this, the present application provides a charging pile, a charging pile system, a control method and a storage medium.

[0005] In a first aspect, an embodiment of the present application provides a charging pile, including a controller, a plurality of power circuits and at least one charging interface;

[0006] The output end of the power circuit is connected to the charging interface, and the input end of the power circuit is used to connect to a power source;

[0007] The controller is used to negotiate with the target charging vehicle corresponding to the target charging interface to reduce the charging power when the power circuit that supplies power to the target charging interface is disabled; if the maximum output power that can be provided by the target charging interface is greater than or equal to the input power requested by the target charging vehicle, the target charging vehicle is charged with the input power requested by the target charging vehicle; if the maximum output power that can be provided by the target charging interface is less than the input power requested by the target charging vehicle, the target charging vehicle is charged with the maximum output power that can be provided by the target charging interface; the target charging interface is one of at least one of the charging interfaces.

[0008] In one possible implementation, the controller is used to determine the power circuit in an idle state among the multiple power circuits, and control at least one power circuit in an idle state to power the target charging interface when the maximum output power of the target charging interface is less than the input power requested by the target charging vehicle.

[0009] In one possible implementation, the controller is used to determine the priorities of multiple power circuits in an idle state when there are multiple power circuits in an idle state; and control at least one power circuit in an idle state to power the target charging interface in order of priority from high to low.

[0010] In a possible implementation, the charging pile includes a plurality of charging interfaces;

[0011] The controller is used to negotiate with the target charging vehicle to reduce the output power of the target charging interface to increase the maximum output power of the other charging interfaces when the maximum output power of the other charging interfaces is less than the input power requested by the corresponding connected charging vehicle; wherein the priority of the other charging interfaces is higher than the priority of the target charging interface.

[0012] In one possible implementation, the controller is used to restart the abnormal power circuit when the power circuit is abnormal; when the number of restarts of the power circuit is greater than or equal to a preset number of restarts and the power circuit is still abnormal, the abnormal power circuit is disabled during this charging period.

[0013] In a possible implementation manner, the controller is used to control the output current of the disabled power circuit to be zero when the power circuit is disabled.

[0014] In a possible implementation, the controller is used to restore the disabled power circuit during the next charging period, and upload the operation and maintenance data of the power circuit to the cloud platform when the number of restoration times of the power circuit is greater than or equal to a preset number of restoration times.

[0015] In a possible implementation, the charging pile includes a detection circuit;

[0016] The input end of the detection circuit is connected to the output end of the power circuit;

[0017] The detection circuit is used to collect electrical parameters of the power circuit; the electrical parameters are used to determine the state of the power circuit.

[0018] In a possible implementation, the charging pile includes a plurality of switch circuits;

[0019] The power circuit is connected to at least one of the charging interfaces via at least one of the switch circuits;

[0020] One end of the switch circuit is connected to an output end of the power circuit, and the other end of the switch circuit is connected to one of the charging interfaces.

[0021] In a second aspect, an embodiment of the present application provides a charging system, which includes a plurality of charging piles as described in any one of the first aspects.

[0022] In a third aspect, an embodiment of the present application provides a control method for a charging pile, wherein the charging pile includes a plurality of power circuits and at least one charging interface;

[0023] The output end of the power circuit is connected to the charging interface, and the input end of the power circuit is used to connect to a power source;

[0024] The method comprises:

[0025] When the power circuit for supplying power to the target charging interface is disabled, the target charging vehicle corresponding to the target charging interface negotiates with the target charging interface to reduce the charging power; the target charging interface is one of the at least one charging interface;

[0026] If the maximum output power that the target charging interface can provide is greater than or equal to the input power requested by the target charging vehicle, the target charging vehicle is charged with the input power requested by the target charging vehicle;

[0027] If the maximum output power that can be provided by the target charging interface is less than the input power requested by the target charging vehicle, the target charging vehicle is charged with the maximum output power that can be provided by the target charging interface.

[0028] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, characterized in that a computer program is stored therein, and the computer program is loaded by a processor to execute the control method of the power converter as described in the third aspect.

[0029] The embodiments of the present application provide a charging pile, a charging pile system, a control method and a storage medium. When a certain power circuit is disabled, resulting in a decrease in the output power of the charging interface, the controller can actively negotiate with the charging vehicle and adjust the charging power. When the maximum output power of the charging interface is greater than or equal to the input power requested by the charging vehicle, charging is performed according to the power requested by the charging vehicle to meet the charging needs of the charging vehicle. When the maximum output power of the charging interface is less than the input power requested by the charging vehicle, charging is performed according to the maximum output power of the charging interface to provide charging power to the charging vehicle to the greatest extent. Through interactive negotiation between the charging pile and the charging vehicle, the interruption of charging service due to the disabling of the power unit is avoided. Even when some power circuits are unavailable, the continuity of charging can be guaranteed. In addition, the charging power is selected based on the relationship between the maximum output power of the charging interface and the input power requested by the charging vehicle to ensure charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a charging pile provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of another charging pile provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of a charging pile control method provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of a control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] During the charging process, damage to the power circuit will cause the charging pile to output at a lower power or stop outputting, affecting the charging efficiency and user experience of the electric vehicle.

[0035] In response to this technical problem, an embodiment of the present application provides a charging pile. When a certain power circuit is disabled, resulting in a decrease in the output power of the charging interface, the controller can actively negotiate with the charging vehicle and adjust the charging power. When the maximum output power of the charging interface is greater than or equal to the input power requested by the charging vehicle, charging is performed according to the power requested by the charging vehicle to meet the charging needs of the charging vehicle. When the maximum output power of the charging interface is less than the input power requested by the charging vehicle, charging is performed according to the maximum output power of the charging interface to provide charging power to the charging vehicle to the greatest extent. Through interactive negotiation between the charging pile and the charging vehicle, the interruption of charging service due to the disabling of the power unit is avoided. Even when some power circuits are unavailable, the continuity of charging can be guaranteed. In addition, the charging power is selected based on the relationship between the maximum output power of the charging interface and the input power requested by the charging vehicle to ensure charging efficiency.

[0036] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the embodiments of the present application are further described in detail below in combination with the accompanying drawings and specific implementation methods.

[0037] like Figure 1 As shown, Figure 1 A schematic diagram of a charging pile provided in an embodiment of the present application. Figure 1 As shown, the charging pile includes a controller, multiple power circuits and at least one charging interface.

[0038] The input end of the power circuit is connected to the power supply; the output end of the power circuit is connected to the charging interface.

[0039] The input end of the power circuit can be connected to the AC power of the power grid (such as 220V / 380V) or the DC power of the energy storage system (such as a battery pack).

[0040] If the input end of the power circuit is connected to the AC power of the power grid, the power circuit can be an AC-DC conversion circuit. The power circuit can convert the AC power into the DC power required by the vehicle battery.

[0041] If the input end of the power circuit is connected to the DC power of the energy storage system, the power circuit can be a DC-DC conversion circuit. The power circuit can adjust the output voltage and output current to an adaptive range.

[0042] The output end of the power circuit can be connected to one charging interface or multiple charging interfaces. Multiple charging interfaces share or independently supply power to a certain power unit.

[0043] The charging interface may include a charging gun holder and a charging gun.

[0044] The charging gun may include power transmission terminals (high voltage positive and negative electrodes) and communication terminals (low voltage signal lines).

[0045] The output end of the power circuit is connected to the charging gun holder through a power line; the charging gun holder and the charging gun are connected through a power line and a communication line. After the charging gun is plugged into the charging port of the charging vehicle, the power transmission terminal of the charging gun (the terminal of the power line) is connected to the power transmission terminal of the charging vehicle, and the communication terminal of the charging gun (the terminal of the communication line) is connected to the communication terminal of the charging vehicle.

[0046] Power lines are used to transmit energy, and communication lines are used to transmit signals. In one implementation, if the charging pile and the charging vehicle use power line carrier (PLC) signals for communication, energy and signal transmission can be achieved simultaneously based on the power line, and the communication line and communication terminal can be omitted.

[0047] The charging interface can be connected to multiple power circuits to increase the output power of the charging interface.

[0048] When the target charging interface is used to charge the target charging vehicle, the output power of the target charging interface is equal to the input power requested by the target charging vehicle. If a power circuit that supplies power to the charging interface is disabled, the charging power of the target charging interface is reduced.

[0049] At this time, the controller can negotiate power with the target charging vehicle through the communication line or power line of the target charging interface to reduce the charging power. As an example, the controller sends a power negotiation instruction to the target charging vehicle through the communication line or power line of the target charging interface. After receiving the power negotiation instruction, the target charging vehicle feeds back a power request instruction to the controller. The power request instruction is used to indicate the input power (also called charging power) requested by the target charging vehicle.

[0050] If the maximum output power that the target charging interface can provide is greater than or equal to the input power requested by the target charging vehicle, it indicates that the current target charging interface can meet the charging power requested by the target charging vehicle, and the controller controls the target charging interface to charge the target charging vehicle with the input power requested by the target charging vehicle.

[0051] The maximum output power that can be provided by the target charging interface refers to the maximum total output power of the power circuits currently supplying power to the target charging interface.

[0052] If the maximum output power that the target charging interface can provide is less than the input power requested by the target charging vehicle, it indicates that the current target charging interface cannot meet the charging power requested by the target charging vehicle. The controller controls the target charging interface to charge the target charging vehicle with the maximum output power that the target charging interface can provide.

[0053] As an example, the output ends of the four power circuits are connected in parallel to the target charging interface. When the target charging interface is used to charge the target charging vehicle, the charging power requirement of the target charging vehicle can be met by calling three power circuits to power the target charging interface. If one of the three power circuits is disabled during this process, the maximum output power of the target charging interface is the sum of the maximum output powers of the remaining two power circuits.

[0054] The controller determines the input power requested by the target charging vehicle after negotiation with the target charging vehicle. If the input power requested by the target charging vehicle is greater than or equal to the maximum output power of the target charging interface, the controller controls the remaining two power supply power circuits to output at the maximum output power to charge the target charging vehicle. If the input power requested by the target charging vehicle is less than the maximum output power of the target charging interface, the controller controls the output power of the remaining two power supply power circuits to be the sum of the input power requested by the target charging vehicle.

[0055] The target charging interface in the above embodiment is any charging interface in the charging pile, and the target charging vehicle refers to a vehicle that is charged using the target charging interface, and can also be understood as a vehicle corresponding to the target charging interface.

[0056] In the embodiment of the present application, when a certain power circuit is disabled and the output power of the charging interface is reduced, the controller can actively negotiate with the charging vehicle and adjust the charging power to avoid charging failure due to power circuit failure, and in the case of power circuit failure, the charging pile can charge the charging vehicle with a higher output power as much as possible.

[0057] In a possible implementation, the charging pile includes multiple switch circuits.

[0058] The power circuit is connected to at least one charging interface via at least one switch circuit.

[0059] One end of the switch circuit is connected to an output end of a power circuit, and the other end of the switch circuit is connected to a charging interface.

[0060] As an example, Figure 2 As shown, the charging pile includes N power circuits, M charging interfaces and M×N switch circuits, where N and M are integers greater than 1.

[0061] The charging pile includes N power circuits, and the output end of each power circuit is simultaneously connected to M switch circuits, and the M switch circuits are connected to the M charging interfaces in a one-to-one correspondence. It can be understood that the first end of each switch circuit is only connected to the output end of one power circuit, and the second end of each switch circuit is only connected to one charging interface.

[0062] When the Nth power circuit supplies power to the Mth charging interface, the switch circuit between the Nth power circuit and the Mth charging interface is in a closed state. When the Nth power circuit is in an idle state or is disabled, all switch circuits connected to the Nth power circuit are in an open state.

[0063] The power circuit can also supply power to multiple charging interfaces at the same time. As an example, the second power circuit supplies power to the first charging interface and the second charging interface at the same time. Then the switch circuit between the second power circuit and the first charging interface is in a closed state, and at the same time, the switch circuit between the second power circuit and the second charging interface is also in a closed state.

[0064] In the charging pile provided in the embodiment of the present application, the charging interface can be connected to multiple power circuits. During the charging process, some power circuits can be in a working state to supply power to the charging interface, and the remaining power circuits can be in an idle state waiting for scheduling.

[0065] In one possible implementation, when the maximum output power of the target charging interface is less than the input power requested by the target charging vehicle, the controller may determine a power circuit in an idle state among multiple power circuits, and control at least one power circuit in an idle state to power the target charging interface.

[0066] The power circuit in the idle state refers to the power circuit that does not output current or voltage to the charging interface, or the power circuit that is not assigned to the current charging task by the controller. The power circuit in the idle state can be activated by the controller at any time and assigned to the target charging interface.

[0067] As an example, if the output ends of four power circuits are connected in parallel to the charging interface, currently only two power circuits are supplying power to the target charging interface, and the remaining two power circuits are not supplying power to any charging interface, and the remaining two power circuits are in an idle state.

[0068] As an implementation manner, the controller controls a switch circuit between the power circuit in an idle state and the target charging interface to be closed, so that the power circuit in an idle state supplies power to the target charging interface.

[0069] In a possible implementation, the charging pile includes a detection circuit.

[0070] The input end of the detection circuit is connected to the output end of the power circuit.

[0071] The detection circuit is used to collect the electrical parameters of the power circuit; the electrical parameters are used to determine the state of the power circuit.

[0072] The detection circuit may be at least one of a current sensor and a voltage sensor, and the electrical parameter may be current, voltage or power. The state of the power circuit includes an idle state and a working state.

[0073] As an example, after collecting the electrical parameters of the power circuit, the detection circuit can determine the state of the power circuit according to the electrical parameters of the power circuit, and then send the state of the power circuit to the controller. As another example, after collecting the electrical parameters of the power circuit, the detection circuit sends the electrical parameters of the power circuit to the controller, and the controller determines the state of the power circuit according to the electrical parameters of the power circuit.

[0074] When the maximum output power of the target charging interface is less than the input power requested by the target charging vehicle, it indicates that the maximum output power of the current target charging interface cannot meet the output power requested by the target charging vehicle. The controller supplements the power supply for the target charging interface through the power circuit that is dynamically in an idle state, thereby improving the power utilization and fault tolerance of the charging pile. The charging pile provided in the embodiment of the present application can flexibly integrate idle resources to avoid redundant waste of power circuits. At the same time, in a fault scenario, it can maintain or increase the charging power through multi-circuit collaborative power supply, reduce charging derating or interruption caused by single circuit failure, and thus ensure charging efficiency and power supply stability.

[0075] Based on the above embodiments, the embodiments of the present application further propose a priority scheduling strategy, which prioritizes power circuits in an idle state and optimizes the calling logic of the power circuits, thereby improving the reliability of the charging pile while ensuring charging needs.

[0076] In one possible implementation, when there are multiple power circuits in an idle state, the controller is used to determine the priorities of the multiple power circuits in an idle state; and control at least one power circuit in an idle state to power the target charging interface in order of priority from high to low.

[0077] Priority refers to the degree to which the idle power circuit is called. When the target charging interface cannot meet the power demand after derating, the controller can refer to the priority to sort the calling order of multiple idle power circuits. The controller preferentially calls the idle power circuit with a higher priority to power the target charging interface.

[0078] As an example, the controller may determine the priority of the power circuit according to the device state attenuation degree of the power circuit. The device state attenuation degree is used to measure the aging degree of the power circuit. The higher the device state attenuation degree, the higher the aging degree of the power circuit, and the lower the priority of the power circuit; the lower the device state attenuation degree, the lower the aging degree of the power circuit, and the higher the priority of the power circuit.

[0079] The lower the device state decay degree of the power circuit (i.e., the higher the health), the higher its priority. At the same time, the system dynamically adjusts the number of available idle modules according to the waiting time of the target interface user to achieve a balance between resource allocation and user experience.

[0080] The controller can dynamically adjust the number of idle modules called according to the current charging waiting time of the target charging vehicle. The charging waiting time can be the waiting time required for the target charging vehicle to be fully charged. As an example, the longer the charging waiting time, the more power circuits in the idle state are called by the controller. However, it should be noted that when the output power of the target charging interface reaches the input power requested by the target charging vehicle, the power circuit in the idle state will no longer be called to power the target charging interface.

[0081] The above embodiment optimizes the power circuit call logic of a single charging interface through a priority scheduling strategy. In a scenario where a charging pile is deployed with multiple charging interfaces and multiple vehicles are charging at the same time, if only the power allocation of a single charging interface is focused on, global resource imbalance may result. For example, when charging vehicles connected to multiple charging interfaces request high power at the same time, the charging pile may not be able to meet all demands due to insufficient total output power. To this end, the embodiment of the present application further proposes a strategy for coordinated adjustment of the output power of multiple charging interfaces.

[0082] In one possible implementation, the controller is used to negotiate with the target charging vehicle to reduce the output power of the target charging interface to increase the maximum output power of the other charging interfaces when the maximum output power of the other charging interfaces is less than the input power requested by the corresponding connected charging vehicle; wherein the priority of the other charging interfaces is higher than the priority of the target charging interface.

[0083] The upper limit of the total output power of the charging pile is equal to the sum of the maximum output powers of all power circuits in the charging pile. When multiple charging ports are working at the same time, the sum of the output powers of the multiple charging ports shall not exceed the upper limit of the total output power of the charging pile.

[0084] Under the premise that the total power capacity is fixed, by reducing the output power of the low-priority charging interface, resources are freed up for the high-priority charging interface, thereby increasing the output power of the high-priority charging interface.

[0085] Through dynamic negotiation, the output power of some charging interfaces is reduced, and the charging needs of high-priority interfaces are prioritized, thereby achieving optimal allocation of power resources on a global scale.

[0086] During the operation of the charging pile, the reliability of the power circuit, as the core unit of energy conversion, directly affects the continuity and safety of the charging process. However, affected by factors such as complex working conditions, device aging, or environmental interference, the power circuit may fail or have abnormal conditions during operation. At the very least, it will lead to charging interruption and deterioration of user experience, and at worst, it will cause permanent damage to the equipment or safety accidents. Therefore, the embodiment of the present application further provides a charging pile that can handle abnormalities in the power circuit in a timely manner to reduce negative impacts.

[0087] In the embodiments of the present application, in order to achieve timely warning and accurate diagnosis of power circuit abnormalities, multi-dimensional real-time sensing and collaborative monitoring can be performed.

[0088] As an example, the Hall sensor can be used to collect the input voltage signal or output voltage signal of the power circuit in real time, and dynamically track abnormal operating conditions such as overvoltage or undervoltage of the power circuit.

[0089] As another example, temperature sensors can be deployed in key heat-sensitive areas such as the heat sink of the power circuit or the bus capacitor connected to the power circuit to continuously monitor the temperature rise rate and absolute value and identify the risk of heat dissipation failure or local overheating of the power circuit.

[0090] As another example, the contactor's closing or opening feedback signal can be collected at a fixed period to verify the compliance of the power circuit's on-off state and avoid short circuit or open circuit failures caused by contactor adhesion or refusal to operate. The contactor is connected between the power supply and the input end of the power circuit.

[0091] In a possible implementation, when the power circuit is abnormal, the controller is used to restart the abnormal power circuit. Furthermore, if the number of restarts of the power circuit is greater than or equal to a preset number of restarts and the power circuit is still abnormal, the abnormal power circuit is disabled during this charging period.

[0092] Power circuit abnormalities may be caused by short-term interference (such as instantaneous drop in grid voltage, sudden load changes, or communication mis-triggering). This type of fault is a transient fault and has self-recovery. Restarting can quickly reset the control logic and clear the transient interference signal. Therefore, when a power circuit abnormality is detected, the controller can try to restore the abnormal power circuit by restarting.

[0093] The number of restarts can be used as a basis for distinguishing transient faults from permanent faults. If the restart is successful after the first abnormality, it is most likely a transient problem; if it still fails after multiple restarts, it can be determined to be hardware damage (such as power tube breakdown, capacitor leakage).

[0094] The preset restart times can be set by the technician based on experience.

[0095] If the power circuit is still abnormal after the preset restart times, the controller disables the power circuit during this charging period to prevent the fault from spreading. The controller disables the power circuit by controlling the output current of the disabled power circuit to zero.

[0096] As an example, after controlling the output current of the disabled power circuit to be zero, the controller controls all switch circuits connected to the power circuit to be disconnected.

[0097] In a possible implementation, at the beginning of the next charging period, the controller restores the disabled power circuit and uses the power circuit to power the charging interface.

[0098] When the number of recovery times of the power circuit is greater than or equal to the preset number of recovery times, the controller uploads the operation and maintenance data of the power circuit to the cloud platform.

[0099] The number of recovery times refers to the number of times the power circuit recovers from being disabled to supply power to the charging port. When the number of recovery times of the power circuit is greater than or equal to the preset number of recovery times, it indicates that the power circuit is damaged and unusable, and the controller uploads the operation and maintenance data of the power circuit to the cloud platform for data analysis.

[0100] When the number of recovery times of the power circuit is greater than or equal to the preset number of recovery times, the controller may permanently disable the power circuit and will not restore the power circuit even during the next charging period, thereby avoiding the spread of the fault.

[0101] Based on the charging piles provided in the above embodiments, the present application also provides a charging system. The charging system includes the charging pile described in any of the above embodiments.

[0102] The input end of the charging pile is used to connect to the power supply, and the output end of the charging pile is used to connect to the load.

[0103] The embodiment of the present application also provides a control method for a charging pile, which is applied to the charging pile described in any of the above embodiments. The method can be executed by a controller inside the charging pile, or by a controller in the charging system. The method includes:

[0104] When a power circuit supplying power to a target charging interface is disabled, the target charging vehicle corresponding to the target charging interface negotiates to reduce the charging power; the target charging interface is one of the at least one charging interface;

[0105] If the maximum output power that the target charging interface can provide is greater than or equal to the input power requested by the target charging vehicle, the target charging vehicle is charged with the input power requested by the target charging vehicle;

[0106] If the maximum output power that the target charging interface can provide is less than the input power requested by the target charging vehicle, the target charging vehicle is charged with the maximum output power that the target charging interface can provide.

[0107] In a possible implementation, the method further includes:

[0108] When the maximum output power of the target charging interface is less than the input power requested by the target charging vehicle, an idle power circuit is determined among multiple power circuits, and at least one idle power circuit is controlled to supply power to the target charging interface.

[0109] In a possible implementation, the method further includes:

[0110] When there are multiple power circuits in an idle state, the priorities of the multiple power circuits in an idle state are determined; and in descending order of priority, at least one power circuit in an idle state is controlled to supply power to a target charging interface.

[0111] In a possible implementation, the charging pile includes multiple charging interfaces.

[0112] The method further comprises:

[0113] When the maximum output power of other charging interfaces is less than the input power requested by the corresponding connected charging vehicle, negotiate with the target charging vehicle to reduce the output power of the target charging interface to increase the maximum output power of other charging interfaces; wherein the priority of other charging interfaces is higher than that of the target charging interface.

[0114] In a possible implementation, the method further includes:

[0115] When the power circuit is abnormal, the abnormal power circuit is restarted; when the number of restarts of the power circuit is greater than or equal to the preset number of restarts and the power circuit is still abnormal, the abnormal power circuit is disabled during this charging period.

[0116] In a possible implementation, the method further includes:

[0117] When the power circuit is disabled, the output current of the disabled power circuit is controlled to be zero.

[0118] In a possible implementation, the method further includes:

[0119] The disabled power circuit is restored during the next charging period, and when the number of restorations of the power circuit is greater than or equal to the preset number of restorations, the operation and maintenance data of the power circuit is uploaded to the cloud platform.

[0120] Next, combine Figure 3 The control method of the charging pile provided in the embodiment of the present application is introduced. Figure 3 As shown, the method includes:

[0121] S301: The controller controls multiple power circuits to supply power to the target charging interface.

[0122] The controller can determine the number of power circuits that need to be called according to the charging power of the target charging vehicle.

[0123] During the charging process, the charging pile detects the status of each power circuit in real time. Taking the controller detecting the status of the power circuit as an example, the process of power circuit abnormality detection can refer to step S305.

[0124] When an abnormality is detected in the power circuit for supplying power to the target charging port, the controller executes step S302 .

[0125] S302: The controller negotiates with the target charging vehicle to reduce the charging power.

[0126] The controller may conduct power negotiation with the target charging vehicle through a communication line or a power line of the target charging interface to reduce the charging power.

[0127] When the maximum output power that the target charging interface can provide is greater than or equal to the input power requested by the target charging vehicle, the controller executes step S303; when the maximum output power that the target charging interface can provide is less than the input power requested by the target charging vehicle, the controller executes step S304.

[0128] S303: The controller controls the target charging interface to charge the target charging vehicle with the input power requested by the target charging vehicle.

[0129] S304: The controller controls the target charging interface to charge the target charging vehicle with the maximum output power that the target charging interface can provide.

[0130] S305: The controller detects the status of each power circuit.

[0131] When a power circuit abnormality is detected, step S306 is executed.

[0132] S306: The controller restarts the abnormal power circuit.

[0133] When the power circuit is abnormal, the controller can first try to restore the power circuit by restarting the power circuit. If the power circuit restarts and resumes normal working state, the power circuit will continue to supply power to the target charging interface; if the number of power circuit restarts is greater than or equal to the preset number of restarts, the power circuit will be disabled during this charging period.

[0134] During the execution of the above steps S302 - S304 , steps S305 - S306 may be executed simultaneously.

[0135] When the recovery times of the power circuit are greater than or equal to the preset recovery times, the controller may further execute step S307.

[0136] S307: The controller uploads the operation and maintenance data of the power circuit to the cloud platform.

[0137] The control method of the charging pile provided in the embodiment of the present application can timely detect and handle the abnormality of the power circuit. Moreover, when the power circuit is abnormal, the charging power can be provided to the charging vehicle to the maximum extent, and the interruption of the charging service due to the disabling of the power unit can be avoided through the interactive negotiation between the charging pile and the charging vehicle.

[0138] In one possible implementation, see Figure 4 , which is a schematic diagram of a control device provided in an embodiment of the present application.

[0139] The control device may include a memory 401 and a processor 402. The processor 402 may be connected to the power converter and may drive switches in each power conversion circuit in the power converter. Figure 4 As shown in the figure, the memory can be a random access memory (Random Access Memory, RAM), a flash memory, a read only memory (Read Only Memory, ROM), an EPROM memory, a non-volatile read only memory (Electronic Programmable ROM, EPROM), a register, a hard disk, a removable disk, etc.

[0140] The memory 401 can store computer instructions. When the computer instructions stored in the memory 401 are executed by the processor 402, the processor 402 can be used to execute the control method of the charging pile. The memory 401 can also store data, for example, information such as the preset restart times and the preset recovery times involved in the above embodiments.

[0141] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing computer program instructions on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, a data center, etc. that includes one or more available media integrated. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

[0142] The present application also provides a readable storage medium for storing the method provided in the above embodiment, for example, a random access memory (RAM), a flash memory, a read only memory (ROM), an EPROM memory, an electronic programmable ROM (EPROM), a register, a hard disk, a removable disk or any other form of storage medium in the art.

[0143] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. For the method disclosed in the embodiment, since it corresponds to the product embodiment disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the product embodiment part.

[0144] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A charging pile, characterized in that: including a controller, a plurality of power circuits and at least one charging interface; The output end of the power circuit is connected to the charging interface, and the input end of the power circuit is used to connect to a power source; The controller is used to negotiate with the target charging vehicle corresponding to the target charging interface to reduce the charging power when the power circuit that supplies power to the target charging interface is disabled; if the maximum output power that can be provided by the target charging interface is greater than or equal to the input power requested by the target charging vehicle, the target charging vehicle is charged with the input power requested by the target charging vehicle; if the maximum output power that can be provided by the target charging interface is less than the input power requested by the target charging vehicle, the target charging vehicle is charged with the maximum output power that can be provided by the target charging interface; the target charging interface is one of at least one of the charging interfaces.

2. The charging pile according to claim 1, characterized in that: The controller is used to determine the power circuit in an idle state among the multiple power circuits when the maximum output power of the target charging interface is less than the input power requested by the target charging vehicle, and control at least one power circuit in an idle state to power the target charging interface.

3. The charging pile according to claim 2, characterized in that: The controller is used to determine the priorities of multiple power circuits in an idle state when there are multiple power circuits in an idle state; and control at least one power circuit in an idle state to supply power to the target charging interface in order of priority from high to low.

4. The charging pile according to claim 1, characterized in that: The charging pile includes a plurality of charging interfaces; The controller is used to negotiate with the target charging vehicle to reduce the output power of the target charging interface to increase the maximum output power of the other charging interfaces when the maximum output power of the other charging interfaces is less than the input power requested by the corresponding connected charging vehicle; wherein the priority of the other charging interfaces is higher than the priority of the target charging interface.

5. The charging pile according to claim 1, characterized in that: The controller is used to restart the abnormal power circuit when the power circuit is abnormal; when the number of restarts of the power circuit is greater than or equal to a preset number of restarts and the power circuit is still abnormal, the abnormal power circuit is disabled during this charging period.

6. The charging pile according to claim 5, characterized in that: The controller is used for controlling the output current of the disabled power circuit to be zero when the power circuit is disabled.

7. The charging pile according to claim 5, characterized in that: The controller is used to restore the disabled power circuit during the next charging period, and upload the operation and maintenance data of the power circuit to the cloud platform when the number of restoration times of the power circuit is greater than or equal to the preset number of restoration times.

8. The charging pile according to claim 1, characterized in that: The charging pile includes a detection circuit; The input end of the detection circuit is connected to the output end of the power circuit; The detection circuit is used to collect electrical parameters of the power circuit; the electrical parameters are used to determine the state of the power circuit.

9. The charging pile according to claim 1, characterized in that: The charging pile includes a plurality of switch circuits; The power circuit is connected to at least one of the charging interfaces via at least one of the switch circuits; One end of the switch circuit is connected to an output end of the power circuit, and the other end of the switch circuit is connected to one of the charging interfaces.

10. A charging system, characterized in that: The charging system comprises a plurality of charging piles as described in any one of claims 1-9.

11. A method for controlling a charging pile, characterized in that: The charging pile includes a plurality of power circuits and at least one charging interface; The output end of the power circuit is connected to the charging interface, and the input end of the power circuit is used to connect to a power source; The method comprises: When the power circuit for supplying power to the target charging interface is disabled, the target charging vehicle corresponding to the target charging interface negotiates with the target charging interface to reduce the charging power; the target charging interface is one of the at least one charging interface; If the maximum output power that the target charging interface can provide is greater than or equal to the input power requested by the target charging vehicle, the target charging vehicle is charged with the input power requested by the target charging vehicle; If the maximum output power that can be provided by the target charging interface is less than the input power requested by the target charging vehicle, the target charging vehicle is charged with the maximum output power that can be provided by the target charging interface.

12. A computer-readable storage medium, characterized in that: A computer program is stored, and the computer program is loaded by a processor to execute the control method of the power converter as claimed in claim 11.

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