WO2018126634A1 - Detection method and device of charging switch of electric vehicle - Google Patents

Detection method and device of charging switch of electric vehicle Download PDF

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Publication number
WO2018126634A1
WO2018126634A1 PCT/CN2017/092322 CN2017092322W WO2018126634A1 WO 2018126634 A1 WO2018126634 A1 WO 2018126634A1 CN 2017092322 W CN2017092322 W CN 2017092322W WO 2018126634 A1 WO2018126634 A1 WO 2018126634A1
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Prior art keywords
charging
electrical connection
state
vehicle
electric vehicle
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PCT/CN2017/092322
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French (fr)
Chinese (zh)
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王嵩飞
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宁德时代新能源科技股份有限公司
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Publication of WO2018126634A1 publication Critical patent/WO2018126634A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
    • G01R19/2509—Details concerning sampling, digitizing or waveform capturing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention belongs to the technical field of electric vehicles, and more particularly to a method and a device for detecting an electric vehicle charging switch.
  • the charging method of the existing electric vehicle is mainly AC charging, and the electric vehicle can be directly connected to the power grid through a charging pile or a charging socket.
  • AC charging uses a lower current to charge the vehicle's power battery.
  • the charging time is usually more than 3 hours, also called slow charging. In this way, the charging current and power are both low, the impact on the battery life and the impact on the power grid are small, and the power trough can be fully utilized to reduce the cost.
  • AC charging is a simple, convenient, and practical way to charge.
  • a guiding circuit specified in GB/T 18487.1-2015 is shown in Figure 1.
  • the circuit consists of L1, L2, L3, N phase power lines, power supply control device 4, contactors K1 and K2, resistors R1, R2, R3, R4, RC, diode D1, switches S1, S2, S3, and car charger 1
  • the vehicle control device 2 and the residual current protection device 5 are composed.
  • the national standard stipulates that the switch S2 is the internal charging switch of the vehicle.
  • the existing AC charging method has the following problems:
  • the vehicle Since there is no CAN communication between the AC charging post and the vehicle, the vehicle informs the charging pile whether the current vehicle is ready to be charged by the on/off of the internal switch S2.
  • the existing AC charging method does not detect the fault of the vehicle internal charging switch S2. Therefore, if the vehicle is not ready and does not satisfy the charging condition, and at this time, the S2 is in a normally closed fault, the charging pile may be erroneously notified that the charging pile is currently available. Charging, causing a safety hazard or damage to the vehicle.
  • the present invention provides an electric vehicle charging switch detecting method, the electric vehicle including an in-vehicle charger, a vehicle control device, and a charging interface, and the in-vehicle charger passes the vehicle internal charging switch and the charging
  • the control guide wire of the interface is electrically connected
  • the vehicle control device is electrically connected to the electrical connection confirmation line and the control guide line of the charging interface, respectively.
  • the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged.
  • the electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
  • the determining the current charging state of the electric vehicle specifically includes:
  • the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault
  • the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault
  • the charging abnormality threshold is greater than the electrical connection abnormality threshold.
  • the acquiring the amplitude of the pulse width modulation signal on the control guide line includes:
  • the present invention provides an electric vehicle charging switch detecting device, which includes an in-vehicle charger, a vehicle control device, and a charging interface, and the in-vehicle charger passes the vehicle internal charging switch and the charging
  • the control guide wire of the interface is electrically connected
  • the vehicle control device is electrically connected to the electrical connection confirmation line of the charging interface and the control guide wire
  • the detecting device comprises:
  • a status confirmation module configured to: determine a current state of charge of the electric vehicle
  • An amplitude obtaining module configured to: acquire a magnitude of a pulse width modulation signal on the control guide line;
  • the fault alarm module is configured to: if the amplitude does not match the current charging state, determine a fault and alarm.
  • the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged.
  • the electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
  • the status confirming module is specifically configured to:
  • the fault alarm module is specifically configured to:
  • the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault
  • the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault
  • the charging abnormality threshold is greater than the electrical connection abnormality threshold.
  • the amplitude obtaining mode Block specifically for:
  • the amplitude acquiring module specifically includes: an input terminal electrically connected to the control guiding line, a first diode, and a second diode , a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a capacitor, a single chip microcomputer;
  • the input ends are respectively electrically connected to the anode of the first diode and the anode of the second diode;
  • the negative pole of the first diode is electrically connected to the first resistor, the third resistor, and the analog sampling end of the single chip, and the connection point of the first resistor and the third resistor is grounded via the second resistor, and the third resistor and the modulus of the single chip microcomputer The connection point of the sampling end is grounded via a capacitor;
  • the negative pole of the second diode is electrically connected to the sampling end of the fourth resistor and the pulse width modulation signal of the single chip, and the connection point of the negative pole of the second diode and the fourth resistor is grounded via the fifth resistor;
  • a single chip microcomputer configured to obtain an effective voltage of a pulse width modulation signal on the control guide line from an analog sampling end, and obtain a duty ratio of a pulse width modulation signal on the control guide line from a sampling end of the pulse width modulation signal And calculating, according to the duty ratio and the effective voltage, the amplitude of the pulse width modulation signal on the control guide line, and then outputting.
  • the method and device for detecting the charging switch of the electric vehicle of the present invention have the following effects:
  • the invention determines whether the internal charging switch is faulty according to the amplitude of the pulse width modulation signal on the control guide line under different charging states of the electric vehicle, and can detect the S2 switch failure of the AC charging side more conveniently and efficiently, and locate Electric vehicle AC charging failure. At the same time, the detection method is simple and practical, without additional cost.
  • FIG. 1 is a schematic diagram of a guiding circuit of an existing electric vehicle AC charging.
  • FIG. 2 is a flow chart showing the operation of a method for detecting a charging switch of an electric vehicle according to the present invention.
  • FIG. 3 is a timing chart of connection control of AC charging of an electric vehicle.
  • FIG. 4 is a flow chart showing the operation of a preferred embodiment of a method for detecting an electric vehicle charging switch according to the present invention.
  • FIG. 5 is a block diagram of a device of an electric vehicle charging switch detecting device according to the present invention.
  • FIG. 6 is a circuit diagram of an amplitude acquisition module in an embodiment of an electric vehicle charging switch detecting device according to the present invention.
  • the electric vehicle includes an in-vehicle charger 1 , a vehicle control device 2 , and a charging interface 3 .
  • the vehicle internal charging switch S2 is electrically connected to the control guide line CP of the charging interface 3, and the vehicle control device 2 respectively electrically connects with the charging interface 3 to confirm the line CC and the control guide line CP.
  • Electrical connection, the detection method includes:
  • Step S201 determining a current state of charge of the electric vehicle
  • Step S202 acquiring a magnitude of a pulse width modulation signal on the control guide line
  • Step S203 If the amplitude does not match the current charging state, determine a fault and alert.
  • the amplitudes of the pulse width modulation signals on the control guide lines are different. Therefore, the current charging state is determined in step S201, the amplitude is acquired in step S202, and the different charging states and controls are performed in step S203. The amplitude of the pulse width modulation signal on the guide line is compared to determine whether malfunction.
  • the amplitude of the pulse width modulation signal on the control guide line is the amplitude of the output point B in FIG.
  • the invention determines whether the internal charging switch is faulty according to the amplitude of the pulse width modulation signal on the control guide line under different charging states of the electric vehicle, and can detect the S2 switch failure of the AC charging side more conveniently and efficiently, and locate Electric vehicle AC charging failure. At the same time, the detection method is simple and practical, without additional cost.
  • the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged.
  • the electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
  • an initial state that is, when an external power supply device is not connected, for example, when the charging gun is not inserted, it is in an offline state;
  • the S2 switch closure command has not been sent at this time.
  • the line enters the online state and sends a closed S2 switch command.
  • the Online state Perform the AC charging process.
  • the determining the current state of charge of the electric vehicle includes:
  • the voltage on the electrical connection confirmation line CC is detected by the output point C of FIG.
  • the voltage of the output point C is greater than the preset electrical connection confirmation threshold, for example, entering the RC resistance corresponding voltage range, it is determined to be the connected state.
  • determining a fault and alerting specifically:
  • the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault
  • the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault
  • the charging abnormality threshold is greater than the electrical connection abnormality threshold.
  • FIG. 3 is a schematic diagram of the detection points A, B, C, the switches S1, S2, S3, the output voltage, and the output current in each state.
  • the Offline state corresponds to the state P1 of FIG. 3
  • the Connect state corresponds to the state P2 of FIG. 3
  • the Online state corresponds to the state P3 of FIG.
  • the S2 switch closure command has not been sent at this time, and the CP amplitude should be in the range of 9V (as before the time of FIG. 3T2).
  • the CP amplitude is detected within the range of 6V, the current S2 switch can be considered to be in an abnormally closed state, and the S2 normally closed fault alarm is reported after confirmation.
  • the CP amplitude should be in the 6V range (as shown in Figure 3T2).
  • the current S2 switch can be considered to be in an abnormally disconnected state. After confirmation, the S2 normally open fault alarm is reported.
  • the acquiring the amplitude of the pulse width modulation signal on the control guide line includes:
  • a working flow chart of a preferred embodiment of a method for detecting an electric vehicle charging switch according to the present invention includes:
  • Step S401 the charging gun is not inserted, there is no CC, CP signal, and the charging state is Offline;
  • Step S402 when the charging gun is inserted, and the mechanical lock is closed, the charging gun is stably inserted, and the CC detecting voltage enters the corresponding voltage range of the RC resistor, and enters the Connect state;
  • Step S403 in the Connect state, the CC voltage of the output point C, the CP duty ratio, the frequency, and the amplitude of the output point B are detected.
  • the CP amplitude is detected within the range of 6V, the current S2 switch is considered to be abnormally closed. Status, after confirmation, the S2 normally closed fault alarm is reported;
  • Step S404 when the CC voltage is normal, the CP duty cycle frequency is normal, the condition is allowed to charge, enter the Online state and send a closed S2 switch command, step S405 is performed, and when the CC is disconnected, step S408 is performed;
  • Step S405 in the Online state, performing an AC charging process
  • step S406 the CC and the CP are detected in the Online state.
  • the CP amplitude is within the range of 9 V, the current S2 switch is considered to be in an abnormally disconnected state, and the S2 normally open fault alarm is reported after the confirmation;
  • Step S407 when the CP, CC abnormality or external request to stop charging, exit Online to enter the Connect state, step S403;
  • step S408 the offline state is entered.
  • an electric vehicle charging switch detecting device of the present invention includes an in-vehicle charger, a vehicle control device, and a charging interface, and the in-vehicle charger passes through the vehicle internal charging switch and the charging interface.
  • the control guide line is electrically connected
  • the vehicle control device is electrically connected to the electrical connection confirmation line of the charging interface and the control guide line
  • the device module diagram of the detecting device includes:
  • the status confirmation module 501 is configured to: determine a current state of charge of the electric vehicle;
  • the amplitude obtaining module 502 is configured to: acquire a magnitude of a pulse width modulation signal on the control guide line;
  • the fault alarm module 503 is configured to: if the amplitude does not match the current charging state, determine a fault and alarm.
  • the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged.
  • the electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
  • the status confirming module is specifically configured to:
  • the fault alarm module is specifically configured to:
  • the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault
  • the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault
  • the charging abnormality threshold is greater than the electrical connection abnormality threshold.
  • the amplitude acquiring module is specifically configured to:
  • the amplitude acquiring module specifically includes: an input end 61 electrically connected to the control guiding line, and a first diode D61, the second diode D62, the first resistor R61, the second resistor R62, the third resistor R63, the fourth resistor R64, the fifth resistor R65, the capacitor C61, the single chip U61;
  • the input end 61 is electrically connected to the anode of the first diode D61 and the anode of the second diode D62, respectively;
  • the cathode of the first diode D61 is electrically connected to the first resistor R61, the third resistor R63, and the analog sampling terminal U611 of the single chip U61.
  • the connection point of the first resistor R61 and the third resistor R63 is grounded via the second resistor R62.
  • the connection point of the third resistor R63 and the analog sampling terminal U611 of the single chip U61 is grounded via the capacitor C61;
  • the cathode of the second diode D62 is electrically connected to the fourth resistor R64 and the pulse width modulation signal sampling terminal U612 of the single chip U61, and the connection point of the cathode of the second diode D62 and the fourth resistor R64 is grounded via the fifth resistor R65. ;
  • the single chip microcomputer U61 is configured to acquire the pulse width modulation on the control guide line from the analog sampling end U611 Obtaining an effective voltage of the signal, obtaining a duty ratio of the pulse width modulation signal on the control guide line from the pulse width modulation signal sampling end U612, and calculating the control guide line according to the duty ratio and the effective voltage The amplitude of the pulse width modulated signal is output.

Abstract

Provided is a detection method of a charging switch of an electric vehicle. The electric vehicle comprises a vehicle-mounted charger (1), a vehicle control device (2), and a charging interface (3). The vehicle-mounted charger (1) is electrically connected to a control pilot line (CP) of the charging interface (3) via a charging switch (S2) in the vehicle. The vehicle control device (2) is electrically connected to an electrical connection confirmation line (CC) of the charging interface (3) and the control pilot line (CP), respectively. The detection method comprises: determining a current charging state of the electric vehicle (S201); acquiring an amplitude value of a pulse width modulation signal on the control pilot line (CP) (S202); and if the amplitude value does not match the current charging state, determining that there is a fault, and generating an alarm (S203). The technical solution determines whether the internal charging switch (S2) is faulty on the basis of the amplitude value of the pulse width modulation signal on the control pilot line (CP) under different charging states of the electric vehicle, such that a fault of the AC charging side switch (S2) can be conveniently and efficiently detected, and an AC charging fault of the electric vehicle can be located.

Description

电动汽车充电开关检测方法、装置Electric vehicle charging switch detecting method and device 技术领域Technical field
本发明属于电动汽车技术领域，更具体地说，本发明涉及一种电动汽车充电开关检测方法、装置。The invention belongs to the technical field of electric vehicles, and more particularly to a method and a device for detecting an electric vehicle charging switch.
背景技术Background technique
随着环保节能意识的增强，电动汽车由于以车载电源为动力，能够解决燃油汽车尾气排放污染环境，高能耗等问题而逐步受到青睐。而电动汽车的充电问题是人们非常关注的问题，其关系到电动汽车的普及和推广。With the increasing awareness of environmental protection and energy conservation, electric vehicles are gradually favored by the problem of fuel-vehicle exhaust emissions, high energy consumption, etc. The charging problem of electric vehicles is a problem that people are very concerned about, which is related to the popularity and promotion of electric vehicles.
现有的电动汽车的充电方式主要是交流充电，其可以通过充电桩或充电插座的形式直接将电动汽车接入电网。交流充电采用较低的电流为车用动力电池进行充电，充电时间一般在3小时以上，也叫慢充。此种方式下，充电电流和功率都较低，对电池寿命影响和对电网冲击都较小，还可充分利用电力低谷时段充电，降低了成本。对于车辆用户来说，交流充电是简单、方便、实用的一种充电方式。The charging method of the existing electric vehicle is mainly AC charging, and the electric vehicle can be directly connected to the power grid through a charging pile or a charging socket. AC charging uses a lower current to charge the vehicle's power battery. The charging time is usually more than 3 hours, also called slow charging. In this way, the charging current and power are both low, the impact on the battery life and the impact on the power grid are small, and the power trough can be fully utilized to reduce the cost. For vehicle users, AC charging is a simple, convenient, and practical way to charge.
电动汽车的生产厂家不同，其内部设计的导引电路也不一样，只要符合国家标准规定即可。GB/T 18487.1—2015中规定的一种导引电路如图1所示。该电路由L1、L2、L3、N相电源线、供电控制装置4、接触器K1和K2、电阻R1、R2、R3、R4、RC、二极管D1、开关S1、S2、S3、车载充电机1、车辆控制装置2和剩余电流保护装置5组成。其中，国标规定，开关S2为车辆内部充电开关，在车辆接口与供电接口完全连接，并且配置了电子锁的接口被完全锁止后，当车载充电机自检完成后无故障，并且电池组处于可充电状态时，S2闭合(如果车辆设置有“充电请求”或“充电控制”功能，则同时应满足车辆处于“充电请求”或“可充电”状态)。当前国标规定充电电流大于8A必须使用带有S2开关的控制导引电路，而目前市面上电动汽车充电电流规格大多均在8A以上。 Different manufacturers of electric vehicles have different internal guiding circuits, as long as they meet the national standards. A guiding circuit specified in GB/T 18487.1-2015 is shown in Figure 1. The circuit consists of L1, L2, L3, N phase power lines, power supply control device 4, contactors K1 and K2, resistors R1, R2, R3, R4, RC, diode D1, switches S1, S2, S3, and car charger 1 The vehicle control device 2 and the residual current protection device 5 are composed. Among them, the national standard stipulates that the switch S2 is the internal charging switch of the vehicle. When the vehicle interface is completely connected with the power supply interface, and the interface equipped with the electronic lock is completely locked, when the vehicle charger is self-checked, there is no fault, and the battery pack is at In the chargeable state, S2 is closed (if the vehicle is equipped with a "charge request" or "charge control" function, then the vehicle should be in the "charge request" or "chargeable" state). At present, the national standard stipulates that the charging current is greater than 8A. The control guiding circuit with S2 switch must be used. At present, most of the charging current specifications of electric vehicles on the market are above 8A.
现有的交流充电方法存在如下问题：The existing AC charging method has the following problems:
由于交流充电桩与车辆之间没有CAN通信，因此车辆通过内部开关S2的通断来通知充电桩当前车辆是否准备好充电。然而，现有的交流充电方法并未对车辆内部充电开关S2进行故障检测，因此，如果车辆未准备好，不满足充电条件，而此时S2处于常闭故障，则会误通知充电桩当前可以充电，从而造成安全隐患或对车辆造成损伤。Since there is no CAN communication between the AC charging post and the vehicle, the vehicle informs the charging pile whether the current vehicle is ready to be charged by the on/off of the internal switch S2. However, the existing AC charging method does not detect the fault of the vehicle internal charging switch S2. Therefore, if the vehicle is not ready and does not satisfy the charging condition, and at this time, the S2 is in a normally closed fault, the charging pile may be erroneously notified that the charging pile is currently available. Charging, causing a safety hazard or damage to the vehicle.
发明内容Summary of the invention
本发明的目的在于：提供一种能对车辆内部充电开关进行故障检测的电动汽车充电开关检测方法、装置。It is an object of the present invention to provide a method and apparatus for detecting an electric vehicle charging switch capable of detecting a failure of a vehicle internal charging switch.
为了实现上述发明目的，本发明提供一种电动汽车充电开关检测方法，所述电动汽车包括车载充电机、车辆控制装置、充电接口，所述车载充电机通过所述车辆内部充电开关与所述充电接口的控制导引线电连接，所述车辆控制装置分别与所述充电接口的电连接确认线、所述控制导引线电连接，所述检测方法包括：In order to achieve the above object, the present invention provides an electric vehicle charging switch detecting method, the electric vehicle including an in-vehicle charger, a vehicle control device, and a charging interface, and the in-vehicle charger passes the vehicle internal charging switch and the charging The control guide wire of the interface is electrically connected, and the vehicle control device is electrically connected to the electrical connection confirmation line and the control guide line of the charging interface, respectively.
判断电动汽车当前充电状态；Judging the current state of charge of the electric vehicle;
获取所述控制导引线上的脉冲宽度调制信号的幅值；Obtaining a magnitude of a pulse width modulation signal on the control guide line;
如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警。If the amplitude does not match the current state of charge, the fault is determined and an alarm is issued.
作为本发明一种电动汽车充电开关检测方法的一种改进，所述充电状态包括表示充电接口未与外部供电设备电连接的离线状态、表示充电接口与外部供电设备电连接但所述车辆内部充电开关打开的电连接状态、表示充电接口与外部供电设备电连接且所述车辆内部充电开关闭合的上线状态。As an improvement of the electric vehicle charging switch detecting method of the present invention, the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged. The electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
作为本发明一种电动汽车充电开关检测方法的一种改进，所述判断电动汽车当前充电状态，具体包括：As an improvement of the electric vehicle charging switch detecting method of the present invention, the determining the current charging state of the electric vehicle specifically includes:
获取所述电连接确认线上的电压； Obtaining a voltage on the electrical connection confirmation line;
如果所述电连接确认线上的电压低于预设电连接确认阈值，则判断为离线状态；If the voltage on the electrical connection confirmation line is lower than the preset electrical connection confirmation threshold, it is determined to be an offline state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且未向所述车辆内部充电开关发送闭合命令，则判断为电连接状态；If the voltage on the electrical connection confirmation line is greater than a preset electrical connection confirmation threshold, and the closing command is not sent to the internal charging switch of the vehicle, determining an electrical connection state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且已向所述车辆内部充电开关发送闭合命令，则判断为上线状态。If the voltage on the electrical connection confirmation line is greater than the preset electrical connection confirmation threshold and a closed command has been sent to the vehicle internal charging switch, it is determined to be in an on-line state.
作为本发明一种电动汽车充电开关检测方法的一种改进，所述如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警，具体包括：As an improvement of the method for detecting the charging switch of the electric vehicle of the present invention, if the amplitude does not match the current state of charge, the fault is determined and the alarm is specifically included:
如果当前充电状态为电连接状态，且所述幅值低于预设电连接异常阈值，则判断故障；If the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault;
如果当前充电状态为上线状态，且所述幅值高于预设充电异常阈值，则判断故障；If the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault;
所述充电异常阈值大于所述电连接异常阈值。The charging abnormality threshold is greater than the electrical connection abnormality threshold.
作为本发明一种电动汽车充电开关检测方法的一种改进，所述获取所述控制导引线上的脉冲宽度调制信号的幅值，具体包括：As an improvement of the method for detecting the charging switch of the electric vehicle of the present invention, the acquiring the amplitude of the pulse width modulation signal on the control guide line includes:
对所述控制导引线上的脉冲宽度调制信号进行电阻电容滤波后，进行模数采样得到脉冲宽度调制信号的有效电压；After performing resistance-capacitance filtering on the pulse width modulation signal on the control guide line, performing analog-to-digital sampling to obtain an effective voltage of the pulse width modulation signal;
获取所述控制导引线上的脉冲宽度调制信号的占空比；Obtaining a duty ratio of the pulse width modulation signal on the control guide line;
根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值。Calculating the amplitude of the pulse width modulation signal on the control guide line according to the duty ratio and the effective voltage.
为了实现上述发明目的，本发明提供一种电动汽车充电开关检测装置，所述电动汽车包括车载充电机、车辆控制装置、充电接口，所述车载充电机通过所述车辆内部充电开关与所述充电接口的控制导引线电连接，所述车辆控制装置分别与所述充电接口的电连接确认线、所述控制导引线电连接，所述检测装置包括： In order to achieve the above object, the present invention provides an electric vehicle charging switch detecting device, which includes an in-vehicle charger, a vehicle control device, and a charging interface, and the in-vehicle charger passes the vehicle internal charging switch and the charging The control guide wire of the interface is electrically connected, and the vehicle control device is electrically connected to the electrical connection confirmation line of the charging interface and the control guide wire, and the detecting device comprises:
状态确认模块，用于：判断电动汽车当前充电状态；a status confirmation module, configured to: determine a current state of charge of the electric vehicle;
幅值获取模块，用于：获取所述控制导引线上的脉冲宽度调制信号的幅值；An amplitude obtaining module, configured to: acquire a magnitude of a pulse width modulation signal on the control guide line;
故障告警模块，用于：如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警。The fault alarm module is configured to: if the amplitude does not match the current charging state, determine a fault and alarm.
作为本发明一种电动汽车充电开关检测装置的一种改进，所述充电状态包括表示充电接口未与外部供电设备电连接的离线状态、表示充电接口与外部供电设备电连接但所述车辆内部充电开关打开的电连接状态、表示充电接口与外部供电设备电连接且所述车辆内部充电开关闭合的上线状态。As an improvement of the electric vehicle charging switch detecting device of the present invention, the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged. The electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
作为本发明一种电动汽车充电开关检测装置的一种改进，所述状态确认模块，具体用于：As an improvement of the electric vehicle charging switch detecting device of the present invention, the status confirming module is specifically configured to:
获取所述电连接确认线上的电压；Obtaining a voltage on the electrical connection confirmation line;
如果所述电连接确认线上的电压低于预设电连接确认阈值，则判断为离线状态；If the voltage on the electrical connection confirmation line is lower than the preset electrical connection confirmation threshold, it is determined to be an offline state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且未向所述车辆内部充电开关发送闭合命令，则判断为电连接状态；If the voltage on the electrical connection confirmation line is greater than a preset electrical connection confirmation threshold, and the closing command is not sent to the internal charging switch of the vehicle, determining an electrical connection state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且已向所述车辆内部充电开关发送闭合命令，则判断为上线状态。If the voltage on the electrical connection confirmation line is greater than the preset electrical connection confirmation threshold and a closed command has been sent to the vehicle internal charging switch, it is determined to be in an on-line state.
作为本发明一种电动汽车充电开关检测装置的一种改进，所述故障告警模块，具体用于：As an improvement of the electric vehicle charging switch detecting device of the present invention, the fault alarm module is specifically configured to:
如果当前充电状态为电连接状态，且所述幅值低于预设电连接异常阈值，则判断故障；If the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault;
如果当前充电状态为上线状态，且所述幅值高于预设充电异常阈值，则判断故障；If the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault;
所述充电异常阈值大于所述电连接异常阈值。The charging abnormality threshold is greater than the electrical connection abnormality threshold.
作为本发明一种电动汽车充电开关检测装置的一种改进，所述幅值获取模 块，具体用于：As an improvement of the electric vehicle charging switch detecting device of the present invention, the amplitude obtaining mode Block, specifically for:
对所述控制导引线上的脉冲宽度调制信号进行电阻电容滤波后，进行模数采样得到脉冲宽度调制信号的有效电压；After performing resistance-capacitance filtering on the pulse width modulation signal on the control guide line, performing analog-to-digital sampling to obtain an effective voltage of the pulse width modulation signal;
获取所述控制导引线上的脉冲宽度调制信号的占空比；Obtaining a duty ratio of the pulse width modulation signal on the control guide line;
根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值。Calculating the amplitude of the pulse width modulation signal on the control guide line according to the duty ratio and the effective voltage.
作为本发明一种电动汽车充电开关检测装置的一种改进，所述幅值获取模块，具体包括：与所述控制导引线电连接的输入端、第一二极管、第二二极管、第一电阻、第二电阻、第三电阻、第四电阻、第五电阻、电容、单片机；As an improvement of the electric vehicle charging switch detecting device of the present invention, the amplitude acquiring module specifically includes: an input terminal electrically connected to the control guiding line, a first diode, and a second diode , a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a capacitor, a single chip microcomputer;
输入端分别与第一二极管的正极、第二二极管的正极电连接；The input ends are respectively electrically connected to the anode of the first diode and the anode of the second diode;
第一二极管的负极依次与第一电阻、第三电阻、单片机的模数采样端电连接，第一电阻与第三电阻的连接点经第二电阻接地，第三电阻与单片机的模数采样端的连接点经电容接地；The negative pole of the first diode is electrically connected to the first resistor, the third resistor, and the analog sampling end of the single chip, and the connection point of the first resistor and the third resistor is grounded via the second resistor, and the third resistor and the modulus of the single chip microcomputer The connection point of the sampling end is grounded via a capacitor;
第二二极管的负极依次与第四电阻、单片机的脉冲宽度调制信号采样端电连接，第二二极管的负极与第四电阻的连接点经第五电阻接地；The negative pole of the second diode is electrically connected to the sampling end of the fourth resistor and the pulse width modulation signal of the single chip, and the connection point of the negative pole of the second diode and the fourth resistor is grounded via the fifth resistor;
单片机，用于从模数采样端获取所述控制导引线上的脉冲宽度调制信号的有效电压，从脉冲宽度调制信号采样端获取所述控制导引线上的脉冲宽度调制信号的占空比，根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值后输出。a single chip microcomputer, configured to obtain an effective voltage of a pulse width modulation signal on the control guide line from an analog sampling end, and obtain a duty ratio of a pulse width modulation signal on the control guide line from a sampling end of the pulse width modulation signal And calculating, according to the duty ratio and the effective voltage, the amplitude of the pulse width modulation signal on the control guide line, and then outputting.
与现有技术相比，本发明电动汽车充电开关检测方法、装置具有以下效果：Compared with the prior art, the method and device for detecting the charging switch of the electric vehicle of the present invention have the following effects:
本发明根据电动汽车在不同的充电状态下，控制导引线上的脉冲宽度调制信号的幅值来判断内部充电开关是否发生故障，能够较为方便、高效地检测出交流充电侧S2开关故障，定位电动汽车AC充电故障。同时，检测方法简单实用、不额外增加成本。The invention determines whether the internal charging switch is faulty according to the amplitude of the pulse width modulation signal on the control guide line under different charging states of the electric vehicle, and can detect the S2 switch failure of the AC charging side more conveniently and efficiently, and locate Electric vehicle AC charging failure. At the same time, the detection method is simple and practical, without additional cost.
附图说明 DRAWINGS
下面结合附图和具体实施方式，对本发明电动汽车充电开关检测方法、装置及其有益效果进行详细说明。The method and device for detecting the charging switch of the electric vehicle of the present invention and the beneficial effects thereof will be described in detail below with reference to the accompanying drawings and specific embodiments.
图1为现有电动汽车交流充电的导引电路示意图。FIG. 1 is a schematic diagram of a guiding circuit of an existing electric vehicle AC charging.
图2为本发明一种电动汽车充电开关检测方法的工作流程图。2 is a flow chart showing the operation of a method for detecting a charging switch of an electric vehicle according to the present invention.
图3为电动汽车交流充电的连接控制时序图。FIG. 3 is a timing chart of connection control of AC charging of an electric vehicle.
图4为本发明一种电动汽车充电开关检测方法最佳实施例的工作流程图。4 is a flow chart showing the operation of a preferred embodiment of a method for detecting an electric vehicle charging switch according to the present invention.
图5为本发明一种电动汽车充电开关检测装置的装置模块图。FIG. 5 is a block diagram of a device of an electric vehicle charging switch detecting device according to the present invention.
图6为本发明一种电动汽车充电开关检测装置的一个实施例中的幅值获取模块的电路示意图。6 is a circuit diagram of an amplitude acquisition module in an embodiment of an electric vehicle charging switch detecting device according to the present invention.
具体实施方式detailed description
为了使本发明的发明目的、技术方案及其有益技术效果更加清晰，以下结合附图和具体实施方式，对本发明进行进一步详细说明。应当理解的是，本说明书中描述的具体实施方式仅仅是为了解释本发明，并非为了限定本发明。The present invention will be further described in detail below in conjunction with the drawings and specific embodiments. The specific embodiments described in the specification are to be construed as illustrative only and not limiting.
请参阅图2，本发明一种电动汽车充电开关检测方法的工作流程图，请参阅图1，所述电动汽车包括车载充电机1、车辆控制装置2、充电接口3，所述车载充电机1通过所述车辆内部充电开关S2与所述充电接口3的控制导引线CP电连接，所述车辆控制装置2分别与所述充电接口3的电连接确认线CC、所述控制导引线CP电连接，所述检测方法包括：2 is a working flow chart of a method for detecting an electric vehicle charging switch according to the present invention. Referring to FIG. 1 , the electric vehicle includes an in-vehicle charger 1 , a vehicle control device 2 , and a charging interface 3 . The vehicle internal charging switch S2 is electrically connected to the control guide line CP of the charging interface 3, and the vehicle control device 2 respectively electrically connects with the charging interface 3 to confirm the line CC and the control guide line CP. Electrical connection, the detection method includes:
步骤S201，判断电动汽车当前充电状态；Step S201, determining a current state of charge of the electric vehicle;
步骤S202，获取所述控制导引线上的脉冲宽度调制信号的幅值；Step S202, acquiring a magnitude of a pulse width modulation signal on the control guide line;
步骤S203，如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警。Step S203: If the amplitude does not match the current charging state, determine a fault and alert.
具体来说，不同的状态下，控制导引线上的脉冲宽度调制信号的幅值不同，因此步骤S201判断出当前充电状态，步骤S202获取幅值，并在步骤S203中根据不同充电状态与控制导引线上的脉冲宽度调制信号的幅值进行比较判断是否 发生故障。Specifically, in different states, the amplitudes of the pulse width modulation signals on the control guide lines are different. Therefore, the current charging state is determined in step S201, the amplitude is acquired in step S202, and the different charging states and controls are performed in step S203. The amplitude of the pulse width modulation signal on the guide line is compared to determine whether malfunction.
其中，控制导引线上的脉冲宽度调制信号的幅值为图1中的输出点B的幅值。Wherein, the amplitude of the pulse width modulation signal on the control guide line is the amplitude of the output point B in FIG.
本发明根据电动汽车在不同的充电状态下，控制导引线上的脉冲宽度调制信号的幅值来判断内部充电开关是否发生故障，能够较为方便、高效地检测出交流充电侧S2开关故障，定位电动汽车AC充电故障。同时，检测方法简单实用、不额外增加成本。The invention determines whether the internal charging switch is faulty according to the amplitude of the pulse width modulation signal on the control guide line under different charging states of the electric vehicle, and can detect the S2 switch failure of the AC charging side more conveniently and efficiently, and locate Electric vehicle AC charging failure. At the same time, the detection method is simple and practical, without additional cost.
本发明一种电动汽车充电开关检测方法的一个实施例中，所述充电状态包括表示充电接口未与外部供电设备电连接的离线状态、表示充电接口与外部供电设备电连接但所述车辆内部充电开关打开的电连接状态、表示充电接口与外部供电设备电连接且所述车辆内部充电开关闭合的上线状态。In an embodiment of the method for detecting an electric vehicle charging switch, the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged. The electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
具体来说，包括三种状态：Specifically, it includes three states:
在初始状态，即未连接外部供电设备，例如充电枪未插入时，为离线(Offline)状态；In an initial state, that is, when an external power supply device is not connected, for example, when the charging gun is not inserted, it is in an offline state;
当连接外部供电设备，例如插入充电枪，且机械锁闭合，此时充电枪稳定插入，进入连接(Connect)状态；When an external power supply device is connected, for example, a charging gun is inserted, and the mechanical lock is closed, the charging gun is stably inserted and enters a connected state;
在进入Connect状态后，此时尚未发送S2开关闭合指令，当CC电压正常、CP占空比频率正常、条件允许充电时，进入上线(Online)状态并发送闭合S2开关指令，在Online状态下，进行AC充电过程。After entering the Connect state, the S2 switch closure command has not been sent at this time. When the CC voltage is normal, the CP duty cycle frequency is normal, and the condition allows charging, the line enters the online state and sends a closed S2 switch command. In the Online state, Perform the AC charging process.
本发明一种电动汽车充电开关检测方法的一个实施例中，所述判断电动汽车当前充电状态，具体包括：In an embodiment of the method for detecting an electric vehicle charging switch of the present invention, the determining the current state of charge of the electric vehicle includes:
获取所述电连接确认线上的电压；Obtaining a voltage on the electrical connection confirmation line;
如果所述电连接确认线上的电压低于预设电连接确认阈值，则判断为离线状态；If the voltage on the electrical connection confirmation line is lower than the preset electrical connection confirmation threshold, it is determined to be an offline state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且未向所述车 辆内部充电开关发送闭合命令，则判断为电连接状态；If the voltage on the electrical connection confirmation line is greater than a preset electrical connection confirmation threshold and is not addressed to the vehicle When the internal charging switch sends a closing command, it is determined to be an electrical connection state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且已向所述车辆内部充电开关发送闭合命令，则判断为上线状态。If the voltage on the electrical connection confirmation line is greater than the preset electrical connection confirmation threshold and a closed command has been sent to the vehicle internal charging switch, it is determined to be in an on-line state.
其中，电连接确认线CC上的电压，通过图1的输出点C进行检测。当输出点C的电压大于预设电连接确认阈值，例如进入RC电阻对应电压范围，则判断为连接状态。The voltage on the electrical connection confirmation line CC is detected by the output point C of FIG. When the voltage of the output point C is greater than the preset electrical connection confirmation threshold, for example, entering the RC resistance corresponding voltage range, it is determined to be the connected state.
本发明一种电动汽车充电开关检测方法的一个实施例中，所述如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警，具体包括：In an embodiment of the method for detecting an electric vehicle charging switch according to the present invention, if the amplitude does not match the current charging state, determining a fault and alerting, specifically:
如果当前充电状态为电连接状态，且所述幅值低于预设电连接异常阈值，则判断故障；If the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault;
如果当前充电状态为上线状态，且所述幅值高于预设充电异常阈值，则判断故障；If the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault;
所述充电异常阈值大于所述电连接异常阈值。The charging abnormality threshold is greater than the electrical connection abnormality threshold.
请参阅图3，为对检测点A、B、C、开关S1、S2、S3、输出电压、输出电流在各状态下的示意图。其中，Offline状态对应图3的状态P1，Connect状态对应图3的状态P2，Online状态对应图3的状态P3。Please refer to FIG. 3, which is a schematic diagram of the detection points A, B, C, the switches S1, S2, S3, the output voltage, and the output current in each state. The Offline state corresponds to the state P1 of FIG. 3, the Connect state corresponds to the state P2 of FIG. 3, and the Online state corresponds to the state P3 of FIG.
在Connect状态下，对应图3状态P2，此时尚未发送S2开关闭合指令，CP幅值应为9V范围(如图3T2时刻前)。当检测到CP幅值在6V范围内时，可以认为当前S2开关处于异常闭合状态，经过确认后报出S2常闭故障告警。In the Connect state, corresponding to the state P2 of Figure 3, the S2 switch closure command has not been sent at this time, and the CP amplitude should be in the range of 9V (as before the time of FIG. 3T2). When the CP amplitude is detected within the range of 6V, the current S2 switch can be considered to be in an abnormally closed state, and the S2 normally closed fault alarm is reported after confirmation.
在Online状态下，CP幅值应为6V范围(如图3T2时刻后)。当检测到CP幅值在9V范围内时，可以认为当前S2开关处于异常断开状态，经过确认后报出S2常开故障告警。In the Online state, the CP amplitude should be in the 6V range (as shown in Figure 3T2). When the CP amplitude is detected within the range of 9V, the current S2 switch can be considered to be in an abnormally disconnected state. After confirmation, the S2 normally open fault alarm is reported.
本发明一种电动汽车充电开关检测方法的一个实施例中，所述获取所述控制导引线上的脉冲宽度调制信号的幅值，具体包括：In an embodiment of the method for detecting a charging switch of an electric vehicle, the acquiring the amplitude of the pulse width modulation signal on the control guide line includes:
对所述控制导引线上的脉冲宽度调制信号进行电阻电容滤波后，进行模数 采样得到脉冲宽度调制信号的有效电压；Performing resistance-capacitance filtering on the pulse width modulation signal on the control guide line, and performing modulus Sampling to obtain an effective voltage of the pulse width modulated signal;
获取所述控制导引线上的脉冲宽度调制信号的占空比；Obtaining a duty ratio of the pulse width modulation signal on the control guide line;
根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值。Calculating the amplitude of the pulse width modulation signal on the control guide line according to the duty ratio and the effective voltage.
脉冲宽度调制信号(Pulse Width Modulation，PWM)的幅值难以直接获取，因此本实用新型通过硬件滤波，利用AD采样获取PWM有效电平，再利用“幅值＝有效电压/占空比”公式计算得到幅值。The amplitude of Pulse Width Modulation (PWM) is difficult to obtain directly. Therefore, the utility model uses the hardware filtering to obtain the PWM effective level by using AD sampling, and then uses the formula of “Amplitude=Effective Voltage/Duty Cycle”. Get the magnitude.
请参阅图4，本发明一种电动汽车充电开关检测方法最佳实施例的工作流程图，包括：Referring to FIG. 4, a working flow chart of a preferred embodiment of a method for detecting an electric vehicle charging switch according to the present invention includes:
步骤S401，充电枪未插入，无CC、CP信号，充电状态为Offline状态；Step S401, the charging gun is not inserted, there is no CC, CP signal, and the charging state is Offline;
步骤S402，当充电枪插入，且机械锁闭合，此时充电枪稳定插入，CC检测电压进入RC电阻对应电压范围，进入Connect状态；Step S402, when the charging gun is inserted, and the mechanical lock is closed, the charging gun is stably inserted, and the CC detecting voltage enters the corresponding voltage range of the RC resistor, and enters the Connect state;
步骤S403，Connect状态内对输出点C的CC电压，输出点B的CP占空比、频率、幅值进行检测，当检测到CP幅值在6V范围内时，可以认为当前S2开关处于异常闭合状态，经过确认后报出S2常闭故障告警；Step S403, in the Connect state, the CC voltage of the output point C, the CP duty ratio, the frequency, and the amplitude of the output point B are detected. When the CP amplitude is detected within the range of 6V, the current S2 switch is considered to be abnormally closed. Status, after confirmation, the S2 normally closed fault alarm is reported;
步骤S404，当CC电压正常、CP占空比频率正常、条件允许充电时，进入Online状态并发送闭合S2开关指令，执行步骤S405，当CC断开时执行步骤S408；Step S404, when the CC voltage is normal, the CP duty cycle frequency is normal, the condition is allowed to charge, enter the Online state and send a closed S2 switch command, step S405 is performed, and when the CC is disconnected, step S408 is performed;
步骤S405，在Online状态下，进行AC充电过程；Step S405, in the Online state, performing an AC charging process;
步骤S406，在Online状态对CC、CP进行检测，当检测到CP幅值在9V范围内时，可以认为当前S2开关处于异常断开状态，经过确认后报出S2常开故障告警；In step S406, the CC and the CP are detected in the Online state. When the CP amplitude is within the range of 9 V, the current S2 switch is considered to be in an abnormally disconnected state, and the S2 normally open fault alarm is reported after the confirmation;
步骤S407，当CP、CC异常或外部要求停止充电时，退出Online进入Connect状态，执行步骤S403；Step S407, when the CP, CC abnormality or external request to stop charging, exit Online to enter the Connect state, step S403;
步骤S408，进入Offline状态。 In step S408, the offline state is entered.
请参阅图5，本发明一种电动汽车充电开关检测装置，所述电动汽车包括车载充电机、车辆控制装置、充电接口，所述车载充电机通过所述车辆内部充电开关与所述充电接口的控制导引线电连接，所述车辆控制装置分别与所述充电接口的电连接确认线、所述控制导引线电连接，所述检测装置的装置模块图包括：Referring to FIG. 5, an electric vehicle charging switch detecting device of the present invention includes an in-vehicle charger, a vehicle control device, and a charging interface, and the in-vehicle charger passes through the vehicle internal charging switch and the charging interface. The control guide line is electrically connected, and the vehicle control device is electrically connected to the electrical connection confirmation line of the charging interface and the control guide line, and the device module diagram of the detecting device includes:
状态确认模块501，用于：判断电动汽车当前充电状态；The status confirmation module 501 is configured to: determine a current state of charge of the electric vehicle;
幅值获取模块502，用于：获取所述控制导引线上的脉冲宽度调制信号的幅值；The amplitude obtaining module 502 is configured to: acquire a magnitude of a pulse width modulation signal on the control guide line;
故障告警模块503，用于：如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警。The fault alarm module 503 is configured to: if the amplitude does not match the current charging state, determine a fault and alarm.
本发明一种电动汽车充电开关检测装置的一个实施例中，所述充电状态包括表示充电接口未与外部供电设备电连接的离线状态、表示充电接口与外部供电设备电连接但所述车辆内部充电开关打开的电连接状态、表示充电接口与外部供电设备电连接且所述车辆内部充电开关闭合的上线状态。In an embodiment of the electric vehicle charging switch detecting device of the present invention, the charging state includes an offline state indicating that the charging interface is not electrically connected to the external power supply device, indicating that the charging interface is electrically connected to the external power supply device, but the vehicle is internally charged. The electrical connection state in which the switch is open, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the internal charging switch of the vehicle is closed.
本发明一种电动汽车充电开关检测装置的一个实施例中，所述状态确认模块，具体用于：In an embodiment of the electric vehicle charging switch detecting device of the present invention, the status confirming module is specifically configured to:
获取所述电连接确认线上的电压；Obtaining a voltage on the electrical connection confirmation line;
如果所述电连接确认线上的电压低于预设电连接确认阈值，则判断为离线状态；If the voltage on the electrical connection confirmation line is lower than the preset electrical connection confirmation threshold, it is determined to be an offline state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且未向所述车辆内部充电开关发送闭合命令，则判断为电连接状态；If the voltage on the electrical connection confirmation line is greater than a preset electrical connection confirmation threshold, and the closing command is not sent to the internal charging switch of the vehicle, determining an electrical connection state;
如果所述电连接确认线上的电压大于预设电连接确认阈值，且已向所述车辆内部充电开关发送闭合命令，则判断为上线状态。If the voltage on the electrical connection confirmation line is greater than the preset electrical connection confirmation threshold and a closed command has been sent to the vehicle internal charging switch, it is determined to be in an on-line state.
本发明一种电动汽车充电开关检测装置的一个实施例中，所述故障告警模块，具体用于： In an embodiment of the electric vehicle charging switch detecting device of the present invention, the fault alarm module is specifically configured to:
如果当前充电状态为电连接状态，且所述幅值低于预设电连接异常阈值，则判断故障；If the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault;
如果当前充电状态为上线状态，且所述幅值高于预设充电异常阈值，则判断故障；If the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault;
所述充电异常阈值大于所述电连接异常阈值。The charging abnormality threshold is greater than the electrical connection abnormality threshold.
本发明一种电动汽车充电开关检测装置的一个实施例中，所述幅值获取模块，具体用于：In an embodiment of the electric vehicle charging switch detecting device of the present invention, the amplitude acquiring module is specifically configured to:
对所述控制导引线上的脉冲宽度调制信号进行电阻电容滤波后，进行模数采样得到脉冲宽度调制信号的有效电压；After performing resistance-capacitance filtering on the pulse width modulation signal on the control guide line, performing analog-to-digital sampling to obtain an effective voltage of the pulse width modulation signal;
获取所述控制导引线上的脉冲宽度调制信号的占空比；Obtaining a duty ratio of the pulse width modulation signal on the control guide line;
根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值。Calculating the amplitude of the pulse width modulation signal on the control guide line according to the duty ratio and the effective voltage.
请参阅图6，本发明一种电动汽车充电开关检测装置的一个实施例中，所述幅值获取模块，具体包括：与所述控制导引线电连接的输入端61、第一二极管D61、第二二极管D62、第一电阻R61、第二电阻R62、第三电阻R63、第四电阻R64、第五电阻R65、电容C61、单片机U61；Referring to FIG. 6 , in an embodiment of the electric vehicle charging switch detecting device of the present invention, the amplitude acquiring module specifically includes: an input end 61 electrically connected to the control guiding line, and a first diode D61, the second diode D62, the first resistor R61, the second resistor R62, the third resistor R63, the fourth resistor R64, the fifth resistor R65, the capacitor C61, the single chip U61;
输入端61分别与第一二极管D61的正极、第二二极管D62的正极电连接；The input end 61 is electrically connected to the anode of the first diode D61 and the anode of the second diode D62, respectively;
第一二极管D61的负极依次与第一电阻R61、第三电阻R63、单片机U61的模数采样端U611电连接，第一电阻R61与第三电阻R63的连接点经第二电阻R62接地，第三电阻R63与单片机U61的模数采样端U611的连接点经电容C61接地；The cathode of the first diode D61 is electrically connected to the first resistor R61, the third resistor R63, and the analog sampling terminal U611 of the single chip U61. The connection point of the first resistor R61 and the third resistor R63 is grounded via the second resistor R62. The connection point of the third resistor R63 and the analog sampling terminal U611 of the single chip U61 is grounded via the capacitor C61;
第二二极管D62的负极依次与第四电阻R64、单片机U61的脉冲宽度调制信号采样端U612电连接，第二二极管D62的负极与第四电阻R64的连接点经第五电阻R65接地；The cathode of the second diode D62 is electrically connected to the fourth resistor R64 and the pulse width modulation signal sampling terminal U612 of the single chip U61, and the connection point of the cathode of the second diode D62 and the fourth resistor R64 is grounded via the fifth resistor R65. ;
单片机U61，用于从模数采样端U611获取所述控制导引线上的脉冲宽度调 制信号的有效电压，从脉冲宽度调制信号采样端U612获取所述控制导引线上的脉冲宽度调制信号的占空比，根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值后输出。The single chip microcomputer U61 is configured to acquire the pulse width modulation on the control guide line from the analog sampling end U611 Obtaining an effective voltage of the signal, obtaining a duty ratio of the pulse width modulation signal on the control guide line from the pulse width modulation signal sampling end U612, and calculating the control guide line according to the duty ratio and the effective voltage The amplitude of the pulse width modulated signal is output.
根据上述说明书的揭示和教导，本发明所属领域的技术人员还可以对上述实施方式进行适当的变更和修改。因此，本发明并不局限于上面揭示和描述的具体实施方式，对本发明的一些修改和变更也应当落入本发明的权利要求的保护范围内。此外，尽管本说明书中使用了一些特定的术语，但这些术语只是为了方便说明，并不对本发明构成任何限制。 The above embodiments may be modified and modified as appropriate by those skilled in the art in light of the above disclosure. Therefore, the invention is not limited to the specific embodiments disclosed and described herein, and the modifications and variations of the invention are intended to fall within the scope of the appended claims. In addition, although specific terms are used in the specification, these terms are merely for convenience of description and do not limit the invention.

Claims (11)

  1. 一种电动汽车充电开关检测方法，所述电动汽车包括车载充电机、车辆控制装置、充电接口，所述车载充电机通过所述车辆内部充电开关与所述充电接口的控制导引线电连接，所述车辆控制装置分别与所述充电接口的电连接确认线、所述控制导引线电连接，其特征在于，所述检测方法包括：An electric vehicle charging switch detecting method, the electric vehicle includes an in-vehicle charger, a vehicle control device, and a charging interface, wherein the in-vehicle charger is electrically connected to a control guide line of the charging interface through the vehicle internal charging switch, The vehicle control device is electrically connected to the electrical connection confirmation line and the control guide line of the charging interface, respectively, wherein the detecting method comprises:
    判断电动汽车当前充电状态；Judging the current state of charge of the electric vehicle;
    获取所述控制导引线上的脉冲宽度调制信号的幅值；Obtaining a magnitude of a pulse width modulation signal on the control guide line;
    如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警。If the amplitude does not match the current state of charge, the fault is determined and an alarm is issued.
  2. 根据权利要求1所述的电动汽车充电开关检测方法，其特征在于，所述充电状态包括表示充电接口未与外部供电设备电连接的离线状态、表示充电接口与外部供电设备电连接但所述车辆内部充电开关打开的电连接状态、表示充电接口与外部供电设备电连接且所述车辆内部充电开关闭合的上线状态。The electric vehicle charging switch detecting method according to claim 1, wherein the charging state comprises an offline state indicating that the charging interface is not electrically connected to the external power supply device, and the charging interface is electrically connected to the external power supply device but the vehicle The electrical connection state in which the internal charging switch is turned on, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the vehicle internal charging switch is closed.
  3. 根据权利要求2所述的电动汽车充电开关检测方法，其特征在于，所述判断电动汽车当前充电状态，具体包括：The method for detecting an electric vehicle charging switch according to claim 2, wherein the determining the current state of charge of the electric vehicle comprises:
    获取所述电连接确认线上的电压；Obtaining a voltage on the electrical connection confirmation line;
    如果所述电连接确认线上的电压低于预设电连接确认阈值，则判断为离线状态；If the voltage on the electrical connection confirmation line is lower than the preset electrical connection confirmation threshold, it is determined to be an offline state;
    如果所述电连接确认线上的电压大于预设电连接确认阈值，且未向所述车辆内部充电开关发送闭合命令，则判断为电连接状态；If the voltage on the electrical connection confirmation line is greater than a preset electrical connection confirmation threshold, and the closing command is not sent to the internal charging switch of the vehicle, determining an electrical connection state;
    如果所述电连接确认线上的电压大于预设电连接确认阈值，且已向所述车辆内部充电开关发送闭合命令，则判断为上线状态。If the voltage on the electrical connection confirmation line is greater than the preset electrical connection confirmation threshold and a closed command has been sent to the vehicle internal charging switch, it is determined to be in an on-line state.
  4. 根据权利要求3所述的电动汽车充电开关检测方法，其特征在于，所述如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警，具体包括：The electric vehicle charging switch detecting method according to claim 3, wherein if the amplitude does not match the current charging state, determining a fault and alerting, specifically:
    如果当前充电状态为电连接状态，且所述幅值低于预设电连接异常阈值，则判断故障；If the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault;
    如果当前充电状态为上线状态，且所述幅值高于预设充电异常阈值，则判 断故障；If the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, then Broken fault
    所述充电异常阈值大于所述电连接异常阈值。The charging abnormality threshold is greater than the electrical connection abnormality threshold.
  5. 根据权利要求1～4任一项所述的电动汽车充电开关检测方法，其特征在于，所述获取所述控制导引线上的脉冲宽度调制信号的幅值，具体包括：The method for detecting an electric vehicle charging switch according to any one of claims 1 to 4, wherein the acquiring the amplitude of the pulse width modulation signal on the control guide line comprises:
    对所述控制导引线上的脉冲宽度调制信号进行电阻电容滤波后，进行模数采样得到脉冲宽度调制信号的有效电压；After performing resistance-capacitance filtering on the pulse width modulation signal on the control guide line, performing analog-to-digital sampling to obtain an effective voltage of the pulse width modulation signal;
    获取所述控制导引线上的脉冲宽度调制信号的占空比；Obtaining a duty ratio of the pulse width modulation signal on the control guide line;
    根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值。Calculating the amplitude of the pulse width modulation signal on the control guide line according to the duty ratio and the effective voltage.
  6. 一种电动汽车充电开关检测装置，所述电动汽车包括车载充电机、车辆控制装置、充电接口，所述车载充电机通过所述车辆内部充电开关与所述充电接口的控制导引线电连接，所述车辆控制装置分别与所述充电接口的电连接确认线、所述控制导引线电连接，其特征在于，所述检测装置包括：An electric vehicle charging switch detecting device, the electric vehicle comprising an in-vehicle charger, a vehicle control device, and a charging interface, wherein the in-vehicle charger is electrically connected to a control guide line of the charging interface through the internal charging switch of the vehicle, The vehicle control device is electrically connected to the electrical connection confirmation line and the control guide line of the charging interface, respectively, wherein the detecting device comprises:
    状态确认模块，用于：判断电动汽车当前充电状态；a status confirmation module, configured to: determine a current state of charge of the electric vehicle;
    幅值获取模块，用于：获取所述控制导引线上的脉冲宽度调制信号的幅值；An amplitude obtaining module, configured to: acquire a magnitude of a pulse width modulation signal on the control guide line;
    故障告警模块，用于：如果所述幅值与所述当前充电状态不匹配，则判断故障，并告警。The fault alarm module is configured to: if the amplitude does not match the current charging state, determine a fault and alarm.
  7. 根据权利要求6所述的电动汽车充电开关检测装置，其特征在于，所述充电状态包括表示充电接口未与外部供电设备电连接的离线状态、表示充电接口与外部供电设备电连接但所述车辆内部充电开关打开的电连接状态、表示充电接口与外部供电设备电连接且所述车辆内部充电开关闭合的上线状态。The electric vehicle charging switch detecting device according to claim 6, wherein the charging state comprises an offline state indicating that the charging interface is not electrically connected to the external power supply device, and the charging interface is electrically connected to the external power supply device but the vehicle The electrical connection state in which the internal charging switch is turned on, the on-line state indicating that the charging interface is electrically connected to the external power supply device and the vehicle internal charging switch is closed.
  8. 根据权利要求7所述的电动汽车充电开关检测装置，其特征在于，所述状态确认模块，具体用于：The electric vehicle charging switch detecting device according to claim 7, wherein the status confirming module is specifically configured to:
    获取所述电连接确认线上的电压；Obtaining a voltage on the electrical connection confirmation line;
    如果所述电连接确认线上的电压低于预设电连接确认阈值，则判断为离线 状态；If the voltage on the electrical connection confirmation line is lower than the preset electrical connection confirmation threshold, it is determined to be offline status;
    如果所述电连接确认线上的电压大于预设电连接确认阈值，且未向所述车辆内部充电开关发送闭合命令，则判断为电连接状态；If the voltage on the electrical connection confirmation line is greater than a preset electrical connection confirmation threshold, and the closing command is not sent to the internal charging switch of the vehicle, determining an electrical connection state;
    如果所述电连接确认线上的电压大于预设电连接确认阈值，且已向所述车辆内部充电开关发送闭合命令，则判断为上线状态。If the voltage on the electrical connection confirmation line is greater than the preset electrical connection confirmation threshold and a closed command has been sent to the vehicle internal charging switch, it is determined to be in an on-line state.
  9. 根据权利要求8所述的电动汽车充电开关检测装置，其特征在于，所述故障告警模块，具体用于：The electric vehicle charging switch detecting device according to claim 8, wherein the fault alarm module is specifically configured to:
    如果当前充电状态为电连接状态，且所述幅值低于预设电连接异常阈值，则判断故障；If the current charging state is an electrical connection state, and the amplitude is lower than a preset electrical connection abnormal threshold, determining a fault;
    如果当前充电状态为上线状态，且所述幅值高于预设充电异常阈值，则判断故障；If the current charging state is an online state, and the amplitude is higher than a preset charging abnormal threshold, determining a fault;
    所述充电异常阈值大于所述电连接异常阈值。The charging abnormality threshold is greater than the electrical connection abnormality threshold.
  10. 根据权利要求6～9任一项所述的电动汽车充电开关检测装置，其特征在于，所述幅值获取模块，具体用于：The electric vehicle charging switch detecting device according to any one of claims 6 to 9, wherein the amplitude acquiring module is specifically configured to:
    对所述控制导引线上的脉冲宽度调制信号进行电阻电容滤波后，进行模数采样得到脉冲宽度调制信号的有效电压；After performing resistance-capacitance filtering on the pulse width modulation signal on the control guide line, performing analog-to-digital sampling to obtain an effective voltage of the pulse width modulation signal;
    获取所述控制导引线上的脉冲宽度调制信号的占空比；Obtaining a duty ratio of the pulse width modulation signal on the control guide line;
    根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值。Calculating the amplitude of the pulse width modulation signal on the control guide line according to the duty ratio and the effective voltage.
  11. 根据权利要求10所述的电动汽车充电开关检测装置，其特征在于，所述幅值获取模块，具体包括：与所述控制导引线电连接的输入端、第一二极管、第二二极管、第一电阻、第二电阻、第三电阻、第四电阻、第五电阻、电容、单片机；The electric vehicle charging switch detecting device according to claim 10, wherein the amplitude obtaining module comprises: an input terminal electrically connected to the control guiding line, a first diode, and a second second a pole tube, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a capacitor, a single chip microcomputer;
    输入端分别与第一二极管的正极、第二二极管的正极电连接；The input ends are respectively electrically connected to the anode of the first diode and the anode of the second diode;
    第一二极管的负极依次与第一电阻、第三电阻、单片机的模数采样端电连 接，第一电阻与第三电阻的连接点经第二电阻接地，第三电阻与单片机的模数采样端的连接点经电容接地；The negative pole of the first diode is electrically connected to the first resistor, the third resistor, and the analog sampling end of the single chip microcomputer. Connected, the connection point of the first resistor and the third resistor is grounded via the second resistor, and the connection point of the third resistor and the analog sampling end of the single chip is grounded via a capacitor;
    第二二极管的负极依次与第四电阻、单片机的脉冲宽度调制信号采样端电连接，第二二极管的负极与第四电阻的连接点经第五电阻接地；The negative pole of the second diode is electrically connected to the sampling end of the fourth resistor and the pulse width modulation signal of the single chip, and the connection point of the negative pole of the second diode and the fourth resistor is grounded via the fifth resistor;
    单片机，用于从模数采样端获取所述控制导引线上的脉冲宽度调制信号的有效电压，从脉冲宽度调制信号采样端获取所述控制导引线上的脉冲宽度调制信号的占空比，根据所述占空比和有效电压计算得到所述控制导引线上的脉冲宽度调制信号的幅值后输出。 a single chip microcomputer, configured to obtain an effective voltage of a pulse width modulation signal on the control guide line from an analog sampling end, and obtain a duty ratio of a pulse width modulation signal on the control guide line from a sampling end of the pulse width modulation signal And calculating, according to the duty ratio and the effective voltage, the amplitude of the pulse width modulation signal on the control guide line, and then outputting.
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109428369A (en) * 2018-11-07 2019-03-05 延锋伟世通电子科技（南京）有限公司 Electric vehicle alternating-current charging interface guidance circuit
CN109459641A (en) * 2018-12-13 2019-03-12 广州供电局有限公司 Alternating-current charging pile tests circuit and its test device
CN110103754A (en) * 2019-05-21 2019-08-09 深圳驿普乐氏科技有限公司 A kind of charging pile and its output power control method adapting to weak grid occasion
CN111572401A (en) * 2020-05-09 2020-08-25 武汉力行远方电源科技有限公司 Control system and method for displaying charging information of whole vehicle on alternating-current charging pile
CN112147518A (en) * 2019-06-27 2020-12-29 北京新能源汽车股份有限公司 Electric automobile charging testing arrangement and system
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CN112305346A (en) * 2020-10-20 2021-02-02 保定新云达电力设备有限责任公司 Portable alternating-current charging pile field detection device and detection method thereof
CN112816817A (en) * 2021-01-04 2021-05-18 阳光电源股份有限公司 Switching unit state detection method and application device
CN113002349A (en) * 2021-02-22 2021-06-22 福建星云电子股份有限公司 Electric vehicle charging fault diagnosis method and system
CN113131542A (en) * 2019-12-31 2021-07-16 北京新能源汽车股份有限公司 Charging and discharging device and charging and discharging control method
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CN113859021A (en) * 2020-06-30 2021-12-31 比亚迪股份有限公司 Vehicle charge-discharge control system, vehicle and method for identifying vehicle charge-discharge mode
CN114103709A (en) * 2021-12-31 2022-03-01 北汽瑞翔汽车有限公司 Electric vehicle alternating current charging control method
CN114148206A (en) * 2021-12-10 2022-03-08 安徽江淮汽车集团股份有限公司 Electric vehicle charging system and method based on European standard charging pile
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CN115201616A (en) * 2022-09-16 2022-10-18 智洋创新科技股份有限公司 Charger operation online monitoring method based on big data
CN112147518B (en) * 2019-06-27 2024-04-26 北京新能源汽车股份有限公司 Electric automobile test device and system that charges

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110143153A (en) * 2019-04-18 2019-08-20 上海电享信息科技有限公司 A kind of information interacting method and system of vehicle and alternating-current charging pile
CN112009303A (en) * 2019-05-28 2020-12-01 上海汽车集团股份有限公司 Control system and method for electric vehicle discharge control
CN110789393B (en) * 2019-10-25 2021-01-15 恒大智慧充电科技有限公司 Signal abnormality detection method, charging device, computer device, and storage medium
CN110920424A (en) * 2019-11-29 2020-03-27 西安锐驰电器有限公司 Charging switch for electric automobile and detection method
CN114161956B (en) * 2020-09-10 2024-04-16 比亚迪股份有限公司 V2V control guide circuit, charge-discharge connection device and electric vehicle
CN112911757A (en) * 2021-01-27 2021-06-04 上汽大众汽车有限公司 Multifunctional LED driving system and driving method
CN113635805B (en) * 2021-09-14 2023-05-26 上汽通用五菱汽车股份有限公司 Charging fault detection method, device and computer readable storage medium
CN113879164B (en) * 2021-10-21 2023-03-28 江苏华鹏智能仪表科技股份有限公司 Method for collecting signals of control guide circuit of alternating current charging equipment
CN113879147B (en) * 2021-11-03 2023-07-14 长春捷翼汽车科技股份有限公司 Fault feedback method, device and equipment for electric vehicle charging device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130020970A1 (en) * 2011-07-18 2013-01-24 O2Micro, Inc. Control System and Control Method for Electric Bicycle
CN103213514A (en) * 2013-04-01 2013-07-24 浙江吉利汽车研究院有限公司杭州分公司 Charging interface detection device of plug-in electric vehicle
CN203840009U (en) * 2014-04-02 2014-09-17 北汽福田汽车股份有限公司 Vehicle charging control system and vehicle
CN104201736A (en) * 2014-08-18 2014-12-10 苏州克兰兹电子科技有限公司 Control and guide circuit for alternating current charging pile of vehicle
CN205265301U (en) * 2015-12-30 2016-05-25 江苏绿城信息技术有限公司 Car stake of charging
CN105730265A (en) * 2016-01-21 2016-07-06 易事特集团股份有限公司 Charging starting device for DC charging pile for electric automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130020970A1 (en) * 2011-07-18 2013-01-24 O2Micro, Inc. Control System and Control Method for Electric Bicycle
CN103213514A (en) * 2013-04-01 2013-07-24 浙江吉利汽车研究院有限公司杭州分公司 Charging interface detection device of plug-in electric vehicle
CN203840009U (en) * 2014-04-02 2014-09-17 北汽福田汽车股份有限公司 Vehicle charging control system and vehicle
CN104201736A (en) * 2014-08-18 2014-12-10 苏州克兰兹电子科技有限公司 Control and guide circuit for alternating current charging pile of vehicle
CN205265301U (en) * 2015-12-30 2016-05-25 江苏绿城信息技术有限公司 Car stake of charging
CN105730265A (en) * 2016-01-21 2016-07-06 易事特集团股份有限公司 Charging starting device for DC charging pile for electric automobile

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN113859021A (en) * 2020-06-30 2021-12-31 比亚迪股份有限公司 Vehicle charge-discharge control system, vehicle and method for identifying vehicle charge-discharge mode
CN113859021B (en) * 2020-06-30 2023-11-14 比亚迪股份有限公司 Vehicle charge and discharge control system, vehicle and method for identifying charge and discharge modes of vehicle
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