A multi-interface compatible electric vehicle charging pile and charging control method

Abstract

The present invention discloses a multi-interface compatible electric vehicle charging pile and a charging control method, relating to the field of new energy vehicle charging technology. The method comprises obtaining the rated output power of the charging pile, the state of the AC charging gun on the charging pile and the required charging power of the vehicle corresponding to the AC charging gun, and the state of the DC charging gun on the charging pile and the required charging power of the vehicle corresponding to the DC charging gun; when the state of the AC charging gun and the state of the DC charging gun meet certain conditions, the output power of the DC charging gun and / or the AC charging gun is adjusted according to the required charging power of the vehicle corresponding to the DC charging gun and / or the AC charging gun, combined with the rated output power of the charging pile; thereby improving the charging power utilization rate of the charging pile.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle charging, and in particular to a multi-interface compatible electric vehicle charging pile and a charging control method. Background Art

[0002] As the country vigorously develops the new energy vehicle industry, the number of new energy electric vehicles is growing rapidly, and charging piles supporting new energy electric vehicles are also being built in large quantities. The existing multi-interface charging piles distribute the charging power of the charging piles mainly by detecting the status of the charging guns and evenly distributing the charging power of each charging gun according to the status of the charging guns; when the required charging power of the vehicles corresponding to certain charging guns is relatively small, this method will also evenly distribute the charging power to the charging guns, resulting in a waste of charging power and a low charging power utilization rate of the charging piles. Summary of the Invention

[0003] Based on this, it is necessary to provide an electric vehicle charging pile and charging control method compatible with multiple interfaces to address the above technical problems, so as to solve the problem in the prior art that the charging power of each charging gun is evenly distributed according to the status of the charging gun, resulting in low charging power utilization of the charging pile.

[0004] In a first aspect, an embodiment of the present invention provides a charging control method for an electric vehicle charging pile compatible with multiple interfaces, the method comprising:

[0005] Obtain the rated output power of the charging pile, the status of the AC charging gun on the charging pile and the required charging power of the vehicle corresponding to the AC charging gun, and the status of the DC charging gun on the charging pile and the required charging power of the vehicle corresponding to the DC charging gun;

[0006] When the status of the AC charging gun and the status of the DC charging gun meet the set conditions, the output power of the DC charging gun and / or the AC charging gun is adjusted according to the required charging power of the vehicle corresponding to the DC charging gun and / or the AC charging gun, combined with the rated output power of the charging pile.

[0007] Optionally, the set condition includes a first preset condition. When the state of the AC charging gun and the state of the DC charging gun meet the first preset condition, the output power of the DC charging gun is adjusted according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the DC charging gun.

[0008] Optionally, when the state of the AC charging gun and the state of the DC charging gun meet a first preset condition, adjusting the output power of the DC charging gun according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the DC charging gun includes:

[0009] If the DC charging gun is in the ready state and the AC charging gun is in the idle state, and the required charging power of the vehicle corresponding to the DC charging gun is greater than or equal to the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the rated output power of the charging pile;

[0010] If the status of the DC charging gun is ready, the status of the AC charging gun is idle, and the required charging power of the vehicle corresponding to the DC charging gun is less than the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the required charging power of the vehicle corresponding to the DC charging gun.

[0011] Optionally, the set condition includes a second preset condition. When the state of the AC charging gun and the state of the DC charging gun meet the second preset condition, the output power of the AC charging gun is adjusted according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the AC charging gun.

[0012] Optionally, when the state of the AC charging gun and the state of the DC charging gun meet a second preset condition, adjusting the output power of the AC charging gun according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the AC charging gun includes:

[0013] If the status of the DC charging gun is idle, the status of the AC charging gun is ready, and the required charging power of the vehicle corresponding to the AC charging gun is greater than or equal to the rated output power of the charging pile, adjust the output power of the AC charging gun to be equal to the rated output power of the charging pile;

[0014] If the status of the DC charging gun is idle, the status of the AC charging gun is ready, and the required charging power of the vehicle corresponding to the AC charging gun is less than the rated output power of the charging pile, then the output power of the AC charging gun is adjusted to be equal to the required charging power of the vehicle corresponding to the AC charging gun.

[0015] Optionally, the set condition includes a third preset condition. When the state of the AC charging gun and the state of the DC charging gun meet the third preset condition, the output power of the AC charging gun and the output power of the DC charging gun are adjusted according to the rated output power of the charging pile, the charging demand power of the vehicle corresponding to the AC charging gun, and the charging demand power of the vehicle corresponding to the DC charging gun.

[0016] Optionally, when the state of the AC charging gun and the state of the DC charging gun meet a third preset condition, adjusting the output power of the AC charging gun and the output power of the DC charging gun according to the rated output power of the charging pile, the charging power requirement of the vehicle corresponding to the AC charging gun, and the charging power requirement of the vehicle corresponding to the DC charging gun, including:

[0017] If both the DC charging gun and the AC charging gun are in the ready state, and the required charging power of the vehicle corresponding to the DC charging gun and the required charging power corresponding to the AC charging gun are both greater than half of the rated output power of the charging pile, then adjust the output power of the DC charging gun and the output power of the AC charging gun to be equal to half of the rated output power of the charging pile;

[0018] If the status of the DC charging gun and the status of the AC charging gun are both ready, the required charging power of the vehicle corresponding to the DC charging gun is greater than half of the rated output power of the charging pile, and the required charging power of the vehicle corresponding to the AC charging gun is less than half of the rated output power of the charging pile, then adjust the output power of the AC charging gun to be equal to the required charging power of the vehicle corresponding to the AC charging gun, and adjust the output power of the DC charging gun to be equal to the difference between the rated output power of the charging pile and the output power of the AC charging gun.

[0019] Optionally, when the state of the AC charging gun and the state of the DC charging gun meet a third preset condition, adjusting the output power of the AC charging gun and the output power of the DC charging gun according to the rated output power of the charging pile, the charging power requirement of the vehicle corresponding to the AC charging gun, and the charging power requirement of the vehicle corresponding to the DC charging gun, further comprising:

[0020] If both the DC charging gun and the AC charging gun are in the ready state, and the required charging power of the vehicle corresponding to the DC charging gun and the required charging power of the AC charging gun are both less than half of the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the required charging power of the vehicle corresponding to the DC charging gun, and adjust the output power of the AC charging gun to be equal to the required charging power of the vehicle corresponding to the AC charging gun;

[0021] If the status of the DC charging gun and the status of the AC charging gun are both ready, the required charging power of the vehicle corresponding to the DC charging gun is less than half of the rated output power of the charging pile, and the required charging power of the vehicle corresponding to the AC charging gun is greater than half of the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the required charging power of the vehicle corresponding to the DC charging gun, and adjust the output power of the AC charging gun to be equal to the difference between the rated output power of the charging pile and the output power of the DC charging gun.

[0022] The above solution has the following beneficial effects:

[0023] The charging control method of the electric vehicle charging pile compatible with multiple interfaces of the present invention obtains the rated output power of the charging pile, the status of the AC charging gun, and the required power of the vehicle corresponding to the AC charging gun, as well as the status of the DC charging gun and the required power of the vehicle corresponding to the DC charging gun; according to the rated output power of the charging pile and the required charging power of the electric vehicles corresponding to the AC charging gun and the DC charging gun, the output power of the AC power conversion module and the output power of the DC power conversion module are adjusted in real time, thereby improving the charging power utilization rate of the charging pile.

[0024] In a second aspect, an embodiment of the present invention provides an electric vehicle charging pile compatible with multiple interfaces, the charging pile comprising:

[0025] A main control board, an AC charging gun, a DC control board, and a DC charging gun. The input end of the AC power conversion module on the main control board is connected to a power source, the output end of the AC power conversion module is connected to the input end of a first relay, and the output end of the first relay is connected to the AC charging gun. The AC charging gun is communicatively connected to the main control board to detect the required charging power of the vehicle corresponding to the AC charging gun.

[0026] The DC control board includes a DC power conversion module and a second relay. The input end of the DC power conversion module is connected to a power supply, and the communication end of the DC power conversion module is communicatively connected to the main control board for receiving a DC power regulation signal issued by the main control board. The output end of the DC power conversion module is connected to the DC charging gun via the second relay. The DC charging gun is communicatively connected to the main control board to detect the required charging power of the vehicle corresponding to the DC charging gun.

[0027] The main control board also includes a processor, which is communicatively connected to the AC power conversion module and the DC power conversion module respectively to adjust the output power of the AC power conversion module and the DC power conversion module; the processor is control-connected to the first relay and the second relay respectively to control the on and off of the first relay and the second relay; when the processor executes the charging pile program, it implements the above-mentioned multi-interface compatible electric vehicle charging pile charging control method.

[0028] Optionally, the main control board further includes:

[0029] A leakage protector, wherein the input end of the leakage protector is connected to a power supply, and the output end of the leakage protector is connected to the input end of the AC power conversion module to detect whether the AC charging gun is leaking; the leakage protector is communicatively connected to the processor to receive a leakage control signal issued by the processor;

[0030] An AC power metering module, wherein the input end of the AC power metering module is connected to the output end of the AC power conversion module, and the output end of the AC power metering module is connected to the input end of the first relay to measure the electric energy consumed by the AC charging gun; the AC power metering module is communicatively connected to the processor to send the electric energy measurement value of the AC charging gun to the processor.

[0031] The above solution has the following beneficial effects:

[0032] The electric vehicle charging pile compatible with multiple interfaces of the present invention is equipped with an AC charging gun and a DC charging gun on one charging pile, which can meet the needs of electric vehicles for both AC charging interfaces and DC charging interfaces, thereby improving the versatility of the charging pile; at the same time, the AC power conversion module and the DC power conversion module adjust the output power in real time according to the processed sending adjustment instructions, so that the power distribution of the charging pile is in an optimal state, thereby improving the charging power utilization rate of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 This is a flow chart of a charging control method for a multi-interface compatible electric vehicle charging pile provided in the first embodiment of the present invention;

[0035] Figure 2This is a structural diagram of a multi-interface compatible electric vehicle charging pile provided in the second embodiment of the present invention;

[0036] Figure 3 This is a structural diagram of a multi-interface compatible electric vehicle charging pile provided in the third embodiment of the present invention;

[0037] Figure 4 This is a structural diagram of a multi-interface compatible electric vehicle charging pile provided in the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments.

[0039] Example 1 provides a Figure 1 The flowchart of the charging control method of a multi-interface compatible electric vehicle charging pile is shown. The charging control method of a multi-interface compatible electric vehicle charging pile may include the following steps:

[0040] Step S101, obtaining the rated output power of the charging pile, the status of the AC charging gun on the charging pile and the required charging power of the vehicle corresponding to the AC charging gun, and the status of the DC charging gun on the charging pile and the required charging power of the vehicle corresponding to the DC charging gun.

[0041] In this embodiment, when the charging pile is designed, the parameter information of the charging pile is written into a fixed address of the memory. The parameter information includes the rated output power of the charging pile. The processor reads the rated output power of the charging pile according to the storage address of the parameter information of the charging pile.

[0042] When the AC charging gun is connected to the vehicle to be charged, current will flow through the AC charging gun circuit. The status of the AC charging gun is determined by detecting whether the current value of the AC charging gun circuit is zero. If the current value is zero, the status of the AC charging gun is idle. If the current value is not zero, the status of the AC charging gun is ready.

[0043] The AC charging gun is equipped with a communication port, through which the processor on the charging pile communicates with the charging vehicle and reads the vehicle's real-time required charging power.

[0044] When a DC charging gun is connected to a vehicle to be charged, current will flow through the DC charging gun circuit. The status of the DC charging gun is determined by detecting whether the current value of the DC charging gun circuit is zero. If the current value is zero, the DC charging gun status is idle; if the current value is not zero, the DC charging gun status is ready.

[0045] The DC charging gun is equipped with a communication port, through which the processor on the charging pile communicates with the charging vehicle and reads the vehicle's real-time required charging power.

[0046] In step S102, when the status of the AC charging gun and the status of the DC charging gun meet the set conditions, the output power of the DC charging gun and / or the AC charging gun is adjusted according to the required charging power of the vehicle corresponding to the DC charging gun and / or the AC charging gun and the rated output power of the charging pile.

[0047] In this embodiment, the output power of the AC charging gun and the DC charging gun are adjusted in three ways according to the status of the AC charging gun and the DC charging gun:

[0048] 1. The setting conditions include a first preset condition. When the status of the AC charging gun and the status of the DC charging gun meet the first preset condition, the output power of the DC charging gun is adjusted according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the DC charging gun.

[0049] The first preset condition is: the status of the DC charging gun is ready, and the status of the AC charging gun is idle; in this case, the DC charging gun is connected to a charging vehicle, and the AC charging gun is not connected to a charging vehicle; in this case, the processor issues a control instruction to control the relay of the AC charging gun to disconnect, thereby cutting off the power supply of the AC charging gun; the processor obtains the required charging power of the vehicle corresponding to the DC charging gun through the communication interface. If the required charging power is greater than or equal to the rated output power of the charging pile, the DC power conversion module on the DC charging gun circuit is adjusted so that the output power of the DC power conversion module is equal to the rated output power of the charging pile, that is, the output power of the DC charging gun is equal to the rated output power of the charging pile.

[0050] If the required charging power of the vehicle corresponding to the DC charging gun is less than the rated output power of the charging pile, the DC power conversion module on the DC charging gun line is adjusted so that the output power of the DC power conversion module is equal to the required charging power of the vehicle corresponding to the DC charging gun, that is, the output power of the DC charging gun is equal to the required charging power of the vehicle.

[0051] For example, the rated output power of the charging pile is 5KW, the DC charging gun is connected to a charging vehicle, and the AC charging gun is not connected to a charging vehicle. The processor of the charging pile controls the relay of the AC charging gun to disconnect and controls the relay of the DC charging gun to close; the processor obtains that the required charging power of the vehicle corresponding to the DC charging gun is 6KW. At this time, the processor adjusts the output power of the DC power conversion module to 5KW; if the processor obtains that the required charging power of the vehicle corresponding to the DC charging gun is 4KW, at this time, the processor adjusts the output power of the DC power conversion module to 4KW.

[0052] 2. The setting conditions also include a second preset condition. When the status of the AC charging gun and the status of the DC charging gun meet the second preset condition, the output power of the AC charging gun is adjusted according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the AC charging gun.

[0053] The second preset condition is: the status of the DC charging gun is idle, and the status of the AC charging gun is ready; in this case, the AC charging gun is connected to a charging vehicle, and the DC charging gun is not connected to a charging vehicle; in this case, the processor issues a control instruction to control the relay of the DC charging gun to disconnect, thereby cutting off the power supply of the DC charging gun; the processor obtains the required charging power of the vehicle corresponding to the AC charging gun through the communication interface. If the required charging power is greater than or equal to the rated output power of the charging pile, the AC power conversion module on the AC charging gun line is adjusted so that the output power of the AC power conversion module is equal to the rated output power of the charging pile, that is, the output power of the AC charging gun is equal to the rated output power of the charging pile.

[0054] If the required charging power of the vehicle corresponding to the AC charging gun is less than the rated output power of the charging pile, the AC power conversion module on the AC charging gun line is adjusted so that the output power of the AC power conversion module is equal to the required charging power of the vehicle corresponding to the AC charging gun, that is, the output power of the AC charging gun is equal to the required charging power of the vehicle.

[0055] For example, the rated output power of the charging pile is 5KW, the AC charging gun is connected to a charging vehicle, and the DC charging gun is not connected to a charging vehicle. The processor of the charging pile controls the relay of the DC charging gun to disconnect and controls the relay of the AC charging gun to close; the processor obtains that the required charging power of the vehicle corresponding to the AC charging gun is 6KW. At this time, the processor adjusts the output power of the AC power conversion module to 5KW; if the processor obtains that the required charging power of the vehicle corresponding to the AC charging gun is 4KW, at this time, the processor adjusts the output power of the AC power conversion module to 4KW.

[0056] 3. The setting conditions also include a third preset condition. When the status of the AC charging gun and the status of the DC charging gun meet the third preset condition, the output power of the AC charging gun and the output power of the DC charging gun are adjusted according to the rated output power of the charging pile, the charging demand power of the vehicle corresponding to the AC charging gun, and the charging demand power of the vehicle corresponding to the DC charging gun.

[0057] The third preset condition is: the status of the DC charging gun and the status of the AC charging gun are both ready. In this case, the AC charging gun is connected to a vehicle that is being charged, and the DC charging gun also has a vehicle that is being charged. In this case, the processor issues a control instruction to control the relay of the DC charging gun and the relay of the AC charging gun to be closed at the same time. The processor obtains the required charging power of the vehicle corresponding to the DC charging gun and the required charging power of the vehicle corresponding to the AC charging gun through their respective corresponding communication interfaces.

[0058] If the required charging power of the vehicle corresponding to the DC charging gun and the required charging power corresponding to the AC charging gun are both greater than half of the rated output power of the charging pile, then the output power of the branch power conversion module on the DC charging gun line and the output power of the AC power conversion module on the AC charging gun line are adjusted to be equal to half of the rated output power of the charging pile, that is, the output power of the DC charging gun and the output power of the AC charging gun are both half of the rated output power of the charging pile.

[0059] If the required charging power of the vehicle corresponding to the DC charging gun is greater than half of the rated output power of the charging pile, and the required charging power of the vehicle corresponding to the AC charging gun is less than half of the rated output power of the charging pile, then the output power of the AC power conversion module on the AC charging gun line is adjusted to be equal to the required charging power of the vehicle corresponding to the AC charging gun, that is, the output power of the AC charging gun is equal to the required charging power of the vehicle corresponding to the AC charging gun; the output power of the DC power conversion module on the DC charging gun line is adjusted to be equal to the difference between the rated output power of the charging pile and the output power of the AC charging gun.

[0060] If the required charging power of the vehicle corresponding to the DC charging gun and the required charging power corresponding to the AC charging gun are both less than half of the rated output power of the charging pile, then the output power of the DC power conversion module on the DC charging gun line is adjusted to be equal to the required charging power of the vehicle corresponding to the DC charging gun, that is, the output power of the DC charging gun is equal to the required charging power of the vehicle corresponding to the DC charging gun; the output power of the AC power conversion module on the AC charging gun line is adjusted to be equal to the required charging power of the vehicle corresponding to the AC charging gun, that is, the output power of the AC charging gun is equal to the required charging power of the vehicle corresponding to the AC charging gun.

[0061] If the required charging power of the vehicle corresponding to the DC charging gun is less than half of the rated output power of the charging pile, and the required charging power of the vehicle corresponding to the AC charging gun is greater than half of the rated output power of the charging pile, then the output power of the DC power conversion module on the DC charging gun line is adjusted to be equal to the required charging power of the vehicle corresponding to the DC charging gun, that is, the output power of the DC charging gun is equal to the required charging power of the vehicle corresponding to the DC charging gun; adjust the output power of the AC power conversion module on the AC charging gun line to be equal to the difference between the rated output power of the charging pile and the output power of the DC charging gun.

[0062] For example, the rated output power of the charging pile is 10KW, the AC charging gun is connected to the charging vehicle, and the DC charging gun is connected to the charging vehicle. The processor of the charging pile controls the relay of the DC charging gun and the relay of the AC charging gun to close; the processor obtains that the required charging power of the vehicle corresponding to the AC charging gun is 6KW, and the required charging power of the vehicle corresponding to the DC charging gun is 7KW. At this time, the processor adjusts the output power of the AC power conversion module and the output power of the DC power conversion module to 5KW; if the processor obtains that the required charging power of the vehicle corresponding to the AC charging gun is 4KW, and the required charging power of the vehicle corresponding to the DC charging gun is 7KW, at this time, the processor adjusts the AC power conversion module to 5KW. The output power of the power conversion module is 4KW, and the output power of the DC power conversion module is adjusted to 6KW; if the processor obtains that the required charging power of the vehicle corresponding to the DC charging gun is 4KW, and the required charging power of the vehicle corresponding to the AC charging gun is 7KW, at this time, the processor adjusts the output power of the DC power conversion module to 4KW, and adjusts the output power of the AC power conversion module to 6KW; if the processor obtains that the required charging power of the vehicle corresponding to the AC charging gun is 4KW, and the required charging power of the vehicle corresponding to the DC charging gun is 3KW, at this time, the processor adjusts the output power of the AC power conversion module to 4KW, and adjusts the output power of the DC power conversion module to 3KW.

[0063] In the charging control method for a multi-interface compatible electric vehicle charging pile of this embodiment, the processor controls the closing or opening of respective relays according to the status of the AC charging gun and the status of the DC charging gun; and then adjusts the output power of the AC power conversion module on the AC charging gun line and the output power of the DC power conversion module on the DC charging gun line in real time according to the rated output power of the charging pile and the required charging power of the electric vehicles corresponding to the AC charging gun and the DC charging gun, so that the charging power of the charging pile is in a better distribution state, thereby improving the charging power utilization rate of the charging pile.

[0064] Example 2 provides a Figure 2 The multi-interface compatible electric vehicle charging pile shown includes:

[0065] Main control board, AC charging gun, DC control board and DC charging gun. The two input ends of the AC power conversion module on the main control board are connected to the live wire L-IN and neutral wire N-IN of the power supply through the external circuit breaker QF. The output end of the AC power conversion module is connected to the input end of the relay K1, and the output end of the relay K1 is connected to the power input end of the AC charging gun; the AC charging gun and the main control board are connected through the communication port CP to detect the required charging power of the vehicle corresponding to the AC charging gun.

[0066] The DC control board includes a DC power conversion module and a relay K2. The two input ends of the DC power conversion module are respectively connected to the live wire L-IN and the neutral wire N-IN of the power supply. The communication end of the DC power conversion module is communicated with the main control board through the communication port CAN2, and is used to receive the DC power adjustment signal sent by the main control board to adjust the output power of the DC power conversion module; the output end of the DC power conversion module is connected to the input end of the relay K2, and the output end of the relay K2 is connected to the positive pole DC+ and negative pole DC- of the power input end of the DC charging gun; the DC charging gun is communicated with the main control board through the communication port CAN1 to detect the required charging power of the vehicle corresponding to the DC charging gun.

[0067] The processor is respectively connected to the AC power conversion module and the DC power conversion module for communication to adjust the output power of the AC power conversion module and the DC power conversion module; the processor is respectively connected to the relay K1 and the relay K2 for controlling the on and off of the relay K1 and the relay K2; when the processor executes the charging pile program, the multi-interface electric vehicle charging pile charging control method as described in Example 1 is implemented.

[0068] The working process of the above-mentioned multi-interface compatible electric vehicle charging pile is as follows:

[0069] (1) When the processing on the main control board detects that the AC charging gun is in the ready state and the DC charging gun is in the idle state, the control relay K1 is closed and the control relay K2 is disconnected; the main control board communicates with the vehicle corresponding to the AC charging gun through the communication port CP on the AC charging gun to obtain the required charging power of the vehicle, and adjusts the output power of the AC charging gun according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the AC charging gun.

[0070] (2) When the processing on the main control board detects that the AC charging gun is in the idle state and the DC charging gun is in the ready state, the control relay K2 is closed and the control relay K1 is disconnected; the main control board communicates with the vehicle corresponding to the DC charging gun through the communication port CAN1 to obtain the required charging power of the vehicle, and adjusts the output power of the DC charging gun according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the DC charging gun.

[0071] (3) When the processing on the main control board detects that the AC charging gun is in the ready state and the DC charging gun is in the ready state, the control relay K2 is closed and the control relay K1 is closed; the main control board communicates with the vehicle corresponding to the AC charging gun through the communication port CP on the AC charging gun to obtain the required charging power of the vehicle; the main control board communicates with the vehicle corresponding to the AC charging gun through the communication port CP on the AC charging gun to obtain the required charging power of the vehicle; the processor adjusts the output power of the AC charging gun and the output power of the DC charging gun according to the rated output power of the charging pile, the required charging power of the vehicle corresponding to the AC charging gun and the required charging power of the vehicle corresponding to the DC charging gun.

[0072] The electric vehicle charging pile compatible with multiple interfaces in this embodiment is equipped with an AC charging gun and a DC charging gun on one charging pile, which can meet the needs of electric vehicles for both AC charging interfaces and DC charging interfaces, thereby improving the versatility of the charging pile. At the same time, the processor on the main control board obtains the rated output power of the charging pile, the status of the AC charging gun, and the required power of the vehicle corresponding to the AC charging gun, as well as the status of the DC charging gun and the required charging power of the vehicle corresponding to the DC charging gun. According to the rated output power of the charging pile and the required charging power of the electric vehicles corresponding to the AC charging gun and the DC charging gun, the output power of the AC power conversion module and the output power of the DC power conversion module are adjusted in real time, thereby improving the charging power utilization rate of the charging pile.

[0073] Example three, provides a Figure 3 The multi-interface compatible electric vehicle charging pile shown in the figure is different from the charging pile in Example 2 in that the main control board also includes: a leakage protector, an energy metering module J1, a fault detection module, an emergency stop switch, a display screen, a light board, an Ethernet communication port and a 4G Bluetooth module; wherein:

[0074] The input end of the leakage protector is connected to the power supply through an external circuit breaker, the output end of the leakage protector is connected to the input end of the AC power conversion module, and the leakage protector is communicated with the processor. The leakage protector is used to detect whether there is leakage in the AC charging branch and send the detection result to the processor, which controls the on and off of relay K1 according to the detection result.

[0075] The input end of the electric energy metering module is connected to the output end of the AC power conversion module, the output end of the electric energy metering module is connected to the input end of the relay K1, and the communication end of the electric energy metering module J1 is connected to the processor to send the electric energy measurement value consumed by the AC charging gun to the processor.

[0076] The fault detection module has an input end connected to the circuit fault detection end of the charging pile and an output end connected to the processor. It is used to detect whether the charging pile has a fault and send a detection signal to the processor.

[0077] The emergency stop switch has its input connected to the output of an external circuit breaker and its output connected to the power supply input of the charging pile. It is used to stop the charging pile in an emergency when a fault occurs.

[0078] The display screen is connected to the display circuit on the main control board and is used to display the operating information of the charging pile, including charging power, charging voltage, charging current, and charging time.

[0079] The Ethernet communication module is connected to the processor on the main control board in a two-way communication manner and is used to communicate with other network devices via Ethernet.

[0080] The 4G Bluetooth module has a two-way communication connection with the processor on the main control board and is used to connect to other devices via 4G or Bluetooth signals.

[0081] The light board is connected to the light board circuit on the main control board and is used to indicate the operating status of the charging pile through indicator lights.

[0082] The DC control board also includes: an energy metering module J2 and an auxiliary source. The input end of the energy metering module J2 is connected to the output end of the DC power conversion module, and the output end of the energy metering module J2 is connected to the input end of the relay K2; the communication end of the energy metering module J2 is connected to the main control board through the communication port CAN2 to send the energy metering value consumed by the DC charging gun to the processor.

[0083] The input end of the auxiliary source is connected to the power supply, and the output end of the auxiliary source is connected to the auxiliary source port of the DC charging gun to provide auxiliary power to the vehicle corresponding to the DC charging gun.

[0084] The connection structure of the main control board, AC charging gun, DC control board and DC charging gun of the charging pile in this embodiment and the working process of the charging pile are the same as the connection structure of the main control board, AC charging gun, DC control board and DC charging gun and the working process of the charging pile in Example 2, and will not be repeated here.

[0085] The multi-interface compatible electric vehicle charging pile of this embodiment has the following features:

[0086] (1) The AC charging gun and the DC charging gun are set on one charging pile at the same time, which can meet the needs of electric vehicles for AC charging interface and DC charging interface, thereby improving the versatility of the charging pile;

[0087] (2) The leakage protector can detect whether the charging pile is leaking in real time, thereby improving the safety of the charging pile;

[0088] (3) The power metering module can measure the power consumed by each charging gun in real time, making it convenient for users to view;

[0089] (4) The auxiliary source provides power to the vehicle independently to prevent the charging gun from malfunctioning and being unable to communicate with the vehicle;

[0090] (5) The CPU adjusts the output power of the AC power conversion module and the output power of the DC power conversion module in real time, thereby improving the charging power utilization rate of the charging pile.

[0091] Example 4 provides a Figure 4 The multi-interface compatible electric vehicle charging pile shown is different from the charging pile in Example 3 in that the power supply connected to the charging pile is three-phase power, and the input end of the DC power conversion module is connected to the three-phase power supply to adapt to the scenario where there is only three-phase power.

[0092] The working process and characteristics of the charging pile in this embodiment are the same as those of the charging pile in the third embodiment, and will not be repeated here.

[0093] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A charging control method for an electric vehicle charging pile compatible with multiple interfaces, characterized in that: include: Obtain the rated output power of the charging pile, the status of the AC charging gun on the charging pile and the required charging power of the vehicle corresponding to the AC charging gun, and the status of the DC charging gun on the charging pile and the required charging power of the vehicle corresponding to the DC charging gun; determine the status of the AC charging gun on the charging pile by detecting whether the current value of the AC charging gun circuit is zero, and the status of the AC charging gun on the charging pile includes idle or ready; determine the status of the DC charging gun on the charging pile by detecting whether the current value of the DC charging gun circuit is zero, and the status of the DC charging gun on the charging pile includes idle or ready; When the status of the AC charging gun and the status of the DC charging gun meet the set conditions, the output power of the DC charging gun and / or the AC charging gun corresponding to the vehicle is adjusted in real time according to the output power of the AC power conversion module and the output power of the DC power conversion module built into the charging pile, so as to achieve the output power adjustment of the DC charging gun and / or the AC charging gun.

2. The multi-interface compatible electric vehicle charging pile charging control method according to claim 1, characterized in that: The set condition includes a first preset condition. When the state of the AC charging gun and the state of the DC charging gun meet the first preset condition, the output power of the DC charging gun is adjusted according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the DC charging gun.

3. The multi-interface compatible electric vehicle charging pile charging control method according to claim 2, characterized in that: When the state of the AC charging gun and the state of the DC charging gun meet a first preset condition, adjusting the output power of the DC charging gun according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the DC charging gun, including: If the DC charging gun is in the ready state and the AC charging gun is in the idle state, and the required charging power of the vehicle corresponding to the DC charging gun is greater than or equal to the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the rated output power of the charging pile; If the status of the DC charging gun is ready, the status of the AC charging gun is idle, and the required charging power of the vehicle corresponding to the DC charging gun is less than the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the required charging power of the vehicle corresponding to the DC charging gun.

4. The multi-interface compatible electric vehicle charging pile charging control method according to claim 1, characterized in that: The set condition includes a second preset condition. When the state of the AC charging gun and the state of the DC charging gun meet the second preset condition, the output power of the AC charging gun is adjusted according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the AC charging gun.

5. The multi-interface compatible electric vehicle charging pile charging control method according to claim 4, characterized in that: When the state of the AC charging gun and the state of the DC charging gun meet a second preset condition, adjusting the output power of the AC charging gun according to the rated output power of the charging pile and the required charging power of the vehicle corresponding to the AC charging gun, including: If the status of the DC charging gun is idle, the status of the AC charging gun is ready, and the required charging power of the vehicle corresponding to the AC charging gun is greater than or equal to the rated output power of the charging pile, adjust the output power of the AC charging gun to be equal to the rated output power of the charging pile; If the status of the DC charging gun is idle, the status of the AC charging gun is ready, and the required charging power of the vehicle corresponding to the AC charging gun is less than the rated output power of the charging pile, then the output power of the AC charging gun is adjusted to be equal to the required charging power of the vehicle corresponding to the AC charging gun.

6. The multi-interface compatible electric vehicle charging pile charging control method according to claim 1, characterized in that: The set conditions include a third preset condition. When the state of the AC charging gun and the state of the DC charging gun meet the third preset condition, the output power of the AC charging gun and the output power of the DC charging gun are adjusted according to the rated output power of the charging pile, the charging demand power of the vehicle corresponding to the AC charging gun, and the charging demand power of the vehicle corresponding to the DC charging gun.

7. The multi-interface compatible electric vehicle charging pile charging control method according to claim 6, characterized in that: When the state of the AC charging gun and the state of the DC charging gun meet a third preset condition, adjusting the output power of the AC charging gun and the output power of the DC charging gun according to the rated output power of the charging pile, the charging power requirement of the vehicle corresponding to the AC charging gun, and the charging power requirement of the vehicle corresponding to the DC charging gun, including: If both the DC charging gun and the AC charging gun are in the ready state, and the required charging power of the vehicle corresponding to the DC charging gun and the required charging power corresponding to the AC charging gun are both greater than half of the rated output power of the charging pile, then adjust the output power of the DC charging gun and the output power of the AC charging gun to be equal to half of the rated output power of the charging pile; If the status of the DC charging gun and the status of the AC charging gun are both ready, the required charging power of the vehicle corresponding to the DC charging gun is greater than half of the rated output power of the charging pile, and the required charging power of the vehicle corresponding to the AC charging gun is less than half of the rated output power of the charging pile, then adjust the output power of the AC charging gun to be equal to the required charging power of the vehicle corresponding to the AC charging gun, and adjust the output power of the DC charging gun to be equal to the difference between the rated output power of the charging pile and the output power of the AC charging gun.

8. The multi-interface compatible electric vehicle charging pile charging control method according to claim 6, characterized in that: When the state of the AC charging gun and the state of the DC charging gun meet a third preset condition, adjusting the output power of the AC charging gun and the output power of the DC charging gun according to the rated output power of the charging pile, the charging power requirement of the vehicle corresponding to the AC charging gun, and the charging power requirement of the vehicle corresponding to the DC charging gun, further comprising: If both the DC charging gun and the AC charging gun are in the ready state, and the required charging power of the vehicle corresponding to the DC charging gun and the required charging power of the AC charging gun are both less than half of the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the required charging power of the vehicle corresponding to the DC charging gun, and adjust the output power of the AC charging gun to be equal to the required charging power of the vehicle corresponding to the AC charging gun; If the status of the DC charging gun and the status of the AC charging gun are both ready, the required charging power of the vehicle corresponding to the DC charging gun is less than half of the rated output power of the charging pile, and the required charging power of the vehicle corresponding to the AC charging gun is greater than half of the rated output power of the charging pile, then adjust the output power of the DC charging gun to be equal to the required charging power of the vehicle corresponding to the DC charging gun, and adjust the output power of the AC charging gun to be equal to the difference between the rated output power of the charging pile and the output power of the DC charging gun.

9. An electric vehicle charging pile compatible with multiple interfaces, characterized in that: include: A main control board, an AC charging gun, a DC control board, and a DC charging gun. The input end of the AC power conversion module on the main control board is connected to a power source, the output end of the AC power conversion module is connected to the input end of a first relay, and the output end of the first relay is connected to the AC charging gun. The AC charging gun is communicatively connected to the main control board to detect the required charging power of the vehicle corresponding to the AC charging gun. The DC control board includes a DC power conversion module and a second relay. The input end of the DC power conversion module is connected to a power supply, and the communication end of the DC power conversion module is communicatively connected to the main control board for receiving a DC power regulation signal issued by the main control board. The output end of the DC power conversion module is connected to the DC charging gun via the second relay. The DC charging gun is communicatively connected to the main control board to detect the required charging power of the vehicle corresponding to the DC charging gun. The main control board also includes a processor, which is communicatively connected to the AC power conversion module and the DC power conversion module respectively to adjust the output power of the AC power conversion module and the DC power conversion module; the processor is control-connected to the first relay and the second relay respectively to control the on and off of the first relay and the second relay; when the processor executes the charging pile program, it implements the multi-interface compatible electric vehicle charging pile charging control method as described in any one of claims 1 to 8.

10. The multi-interface compatible electric vehicle charging pile according to claim 9, characterized in that: The main control board also includes: A leakage protector, wherein the input end of the leakage protector is connected to a power supply, and the output end of the leakage protector is connected to the input end of the AC power conversion module to detect whether the AC charging gun is leaking; the leakage protector is communicatively connected to the processor to receive a leakage control signal issued by the processor; An AC power metering module, wherein the input end of the AC power metering module is connected to the output end of the AC power conversion module, and the output end of the AC power metering module is connected to the input end of the first relay to measure the electric energy consumed by the AC charging gun; the AC power metering module is communicatively connected to the processor to send the electric energy measurement value of the AC charging gun to the processor.

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