WO2015090083A1 - 充电桩的控制导引检测电路和装置 - Google Patents

充电桩的控制导引检测电路和装置 Download PDF

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Publication number
WO2015090083A1
WO2015090083A1 PCT/CN2014/085162 CN2014085162W WO2015090083A1 WO 2015090083 A1 WO2015090083 A1 WO 2015090083A1 CN 2014085162 W CN2014085162 W CN 2014085162W WO 2015090083 A1 WO2015090083 A1 WO 2015090083A1
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WIPO (PCT)
Prior art keywords
voltage
module
node
central processing
processing unit
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PCT/CN2014/085162
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English (en)
French (fr)
Inventor
张宝群
时锐
焦然
马龙飞
迟忠君
潘鸣宇
陈艳霞
赵建勇
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国家电网公司
国网北京市电力公司
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Publication of WO2015090083A1 publication Critical patent/WO2015090083A1/zh

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20Charging or discharging characterised by the power electronics converter
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]

Definitions

  • the present invention relates to the field of power technologies, and in particular to a control pilot detection circuit and device for a charging post.
  • the main object of the present invention is to provide a control guiding detection circuit and device for a charging pile to solve the problem that the charging charging process of the charging pile cannot be detected in the prior art.
  • a control pilot detecting circuit for a charging post comprising: a central processing unit; a voltage detecting module connected to the central processing unit for detecting a pilot voltage of the charging post; and a PWM detecting module Connected to the central processing unit for detecting the duty cycle of the PWM waveform of the charging post; an interface module for connecting the charging cable and connected to the central processing unit; and a human-machine interaction module connected to the central processing unit; And a power supply module, which is connected to the central processing unit, the voltage detecting module, the PWM detecting module and the human-machine interaction module.
  • the voltage detecting module comprises: an operational amplifier, the output is connected to the central processor, and the inverting input is connected to the first node, wherein the first node is a node between the output of the operational amplifier and the central processor
  • the first resistor is connected between the non-inverting input terminal of the operational amplifier and the voltage detecting end of the charging post;
  • the second resistor is connected between the second node and the signal ground, wherein the second node is the first resistor and the operation a node between the non-inverting input of the amplifier; a magnetic bead connected between the first resistor and the voltage detecting end; a first capacitor connected between the third node and the signal ground, wherein the third node is a magnetic bead and a node between the voltage detecting terminals; and a second capacitor connected between the first node and the signal ground.
  • the voltage detecting module further comprises: a first diode, the anode is connected to the magnetic bead, the cathode is connected to the first resistor; and the second diode is connected to the signal ground, and the cathode is connected to the third node .
  • the PWM detecting module comprises: an optocoupler chip connected to the central processing unit; a first field effect transistor, the gate is connected to the first output end of the PWM waveform, the source is connected to the signal ground; and the third resistor is connected a drain of the first FET and the optocoupler chip; a second FET, the gate is connected to the second output of the PWM waveform, the drain is connected to the first voltage source, and the source is connected to the signal ground; a fourth resistor connected between the first voltage source and the drain of the second field effect transistor; and a fifth resistor connected between the fourth node domain optocoupler chip, wherein the fourth node is the second field effect transistor A node between the drain and the fourth resistor.
  • the human-computer interaction module comprises: a display screen connected to the central processing unit; and a filtering module connected between the power supply module and the display screen.
  • the power supply module includes: a first voltage regulating chip, the input end is connected to the first voltage source, the output end is configured to output the first voltage, wherein the voltage of the first voltage source is greater than the first voltage; and the second voltage adjustment The chip, the input sheet is connected to the output end of the first voltage regulating chip, and the output end is used for outputting the second voltage, wherein the first voltage is greater than the second voltage.
  • control guidance detecting circuit further comprises: a memory chip connected to the central processing unit.
  • a control guide detecting device for a charging post comprising the control guiding detecting circuit of any one of the charging posts provided by the above-mentioned contents of the present invention.
  • the invention adopts a control guiding detection circuit of a charging pile having the following structure: a central processing unit; a voltage detecting module connected to the central processing unit for detecting the guiding voltage of the charging pile; and a PWM detecting module, which is connected with the central processing unit Connection for detecting the duty cycle of the PWM waveform of the charging post; an interface module for connecting the charging cable and connecting to the central processing unit; a human-machine interaction module connected to the central processing unit; and a power supply module, and the central unit
  • the processor, the voltage detection module, the PWM detection module, and the human-machine interaction module are all connected.
  • the charging cable is connected through the interface module, the guiding voltage of the charging pile is detected by the voltage detecting module, and the duty cycle of the PWM waveform of the charging pile is detected by the PWM detecting module, and is controlled and processed by the human interaction module and the central processing unit, thereby realizing The safety and reliability of the charging process are detected, which solves the problem that the charging process of the charging pile cannot be detected in the prior art, thereby achieving the control and guiding detection of the charging pile, thereby ensuring safety.
  • FIG. 1 is a schematic diagram of a control guidance detecting circuit of a charging post according to an embodiment of the present invention
  • FIG. 2 is a circuit diagram of a central processing unit in a control pilot detection circuit of a charging post according to an embodiment of the present invention
  • FIG. 3 is a circuit diagram of a voltage detecting module in a control pilot detecting circuit of a charging post according to an embodiment of the present invention
  • FIG. 4 is a circuit diagram of a PWM detection module in a control pilot detection circuit of a charging post according to an embodiment of the present invention
  • FIG. 5 is a circuit diagram of a human-machine interaction module in a control guidance detecting circuit of a charging post according to an embodiment of the present invention
  • FIG. 6 is a circuit diagram of a power supply module in a control pilot detection circuit of a charging post according to an embodiment of the present invention
  • FIG. 7 is a circuit diagram of a memory chip in a control pilot detection circuit of a charging post in accordance with an embodiment of the present invention.
  • the embodiment of the invention provides a control guiding detection circuit for a charging pile.
  • control guiding detecting circuit mainly includes: a central processing unit 10, a voltage detecting module 20, and a PWM (pulse width modulation). Pulse-Width Modulation (PWM) detection module 30, interface module 40, human-computer interaction module 50 and power supply module 60, wherein:
  • the voltage detecting module 20, the PWM detecting module 30, the interface module 40, and the human-machine interaction module 50 are all connected to the central processing unit 10.
  • the voltage detecting module 20 is configured to detect the guiding voltage of the charging post, thereby determining the charging phase of the charging post.
  • the PWM detection module 30 is configured to detect the duty cycle of the PWM waveform of the charging post.
  • the interface module 40 is used to connect the charging cable. In the embodiment of the present invention, the interface module 40 can use any charging socket in the prior art to simulate the vehicle end interface. When detecting the charging pile, the interface module 40 and the interface module 40 Charging cable connection.
  • the human-computer interaction module 50 is configured to display the detection content and the result, and can receive the detection instruction of the inspector to determine a specific detection item.
  • the power supply module 60 is connected to the central processing unit 10, the voltage detecting module 20, the PWM detecting module 30, and the human-machine interaction module 50 for providing power support for each part.
  • the control guiding detection circuit of the charging pile connects the charging cable through the interface module, detects the guiding voltage of the charging pile through the voltage detecting module, and detects the PWM waveform of the charging pile by the PWM detecting module.
  • the duty ratio is controlled and processed by the human interface interaction module and the central processing unit, thereby realizing the detection of the safety and reliability of the charging process, and solving the problem that the charging process of the charging pile cannot be detected in the prior art, thereby achieving
  • the control and guidance detection of the charging pile ensures the safety.
  • the specific circuit of the central processing unit 10 is shown in FIG. 2.
  • the central processing unit 10 mainly includes a processor chip STM32F107 and a peripheral circuit of the processor chip, and the peripheral circuit mainly includes a crystal oscillator circuit and The reset circuit, wherein the crystal oscillator circuit comprises a first crystal oscillator circuit composed of a crystal oscillator X1, a capacitor C2 and a capacitor C4, and a second crystal oscillator circuit composed of a crystal oscillator X2, a capacitor C12 and a capacitor C13.
  • the reset circuit includes a first reset circuit composed of a switch SW1 and a resistor R4, and a second reset circuit composed of a switch SW2 and a resistor R9.
  • the voltage detecting module 20 mainly includes an operational amplifier B, a first resistor R46, and a second resistor R47.
  • the first resistor R46 is connected between the non-inverting input terminal of the operational amplifier B and the voltage detecting terminal of the charging post.
  • the second resistor R47 is coupled between the second node and the signal ground, wherein the second node is a node between the first resistor R46 and the positive phase input of the operational amplifier B.
  • the magnetic bead FB21 is connected between the first resistor R46 and the voltage detecting terminal.
  • the first capacitor C77 is connected between the third node and the signal ground, wherein the third node is a node between the magnetic bead FB21 and the voltage detecting end.
  • the second capacitor C78 is connected between the first node and the signal ground.
  • the first resistor R46 of 200K and the second resistor R47 of 51K form a voltage dividing circuit to reduce the input voltage
  • the first capacitor C77 of 10nF and the magnetic bead FB21 and the operational amplifier B constitute a filtering circuit.
  • the entire circuit is a signal conditioning circuit, and the analog signal of the detected pilot voltage is sent to the central processing unit 10 through an analog-to-digital converter.
  • the voltage detecting module 20 further includes a first diode D8 and a second diode T14, wherein the anode of the first diode D8 is connected to the magnetic bead FB21, and the cathode is connected to the first resistor R46.
  • the anode of the second diode T14 is connected to the signal ground, and the cathode is connected to the third node, wherein the second diode T14 is a transient voltage suppression diode.
  • the PWM detection module 30 mainly includes an optocoupler chip U3 and a first field effect transistor Q1.
  • the gate of the first field effect transistor Q1 is coupled to the first output of the PWM waveform via a resistor R30, the source is coupled to the signal ground, and the drain is coupled to the gate through resistors R25 and R24 in sequence.
  • the third resistor R32 is connected between the drain of the first field effect transistor Q1 and the optocoupler chip U3.
  • the gate of the second FET Q2 is coupled to the second output of the PWM waveform via a resistor R46, the drain is coupled to a first voltage source (12V DC voltage source), and the gate is coupled to the first voltage source via a resistor R44
  • the source is connected to the signal ground.
  • the fourth resistor R42 is connected between the first voltage source and the drain of the second field effect transistor Q2.
  • the fifth resistor R36 is connected between the fourth node domain optocoupler chip U3, wherein the fourth node is a node between the drain of the second field effect transistor Q2 and the fourth resistor R42.
  • the first field effect transistor Q1 and the second field effect transistor Q2 of the type 2N7002 constitute a driving circuit to enhance the input current driving capability and increase the input range of the voltage; the model number is TLP281.
  • the optocoupler chip U3 acts as a voltage converter to change the voltage to a level of 0 to 3.3V acceptable to the central processor 10.
  • the human-machine interaction module 50 mainly includes a display screen JP6 and a filtering module, wherein the display screen The JP6 is connected to the central processing unit 10.
  • the display screen JP6 can adopt a 128*64 dot matrix liquid crystal screen, and is connected to the central processing unit 10 through the SPI interface, and the filtering module is connected to the power supply module 60 and the display.
  • the power supply filtering is performed on the display screen JP6, wherein the filtering module mainly comprises a magnetic bead FBLCD, a capacitor ZDC, a capacitor C38B and a capacitor C38.
  • the human-computer interaction module 50 can also include a keyboard interface to connect the keyboard.
  • the keyboard interface can adopt the interface of the DB9 to facilitate installation.
  • FIG. 6 is a circuit diagram of a power supply module 60 in a control pilot detection circuit of a charging post according to an embodiment of the present invention.
  • the power supply module 60 mainly includes a first voltage regulating chip U7 and a second voltage regulating chip U5.
  • the input end of the first voltage regulating chip U7 is connected to the first voltage source, and the output end is used for outputting the first voltage, wherein the voltage of the first voltage source is greater than the first voltage
  • the second voltage regulating chip U5 inputs the first and the first
  • the output of the voltage regulating chip U7 is connected, and the output is used for outputting a second voltage, wherein the first voltage is greater than the second voltage.
  • the circuit configuration of the power supply module 60 is specifically described by taking the first voltage as a direct current voltage of 5V and the second voltage as a direct current voltage of 3.3V.
  • the first voltage regulating chip U7 may adopt a DC-DC converter.
  • the voltage of 12V is changed to 5V, and the components constituting its peripheral circuit include capacitor C49, diode D5, 33Uh/2A magnetic shield chip inductor L1 and capacitor C50.
  • the second voltage regulating chip U5 can use an LDO to change the voltage of 5V to 3.3V, and the components constituting its peripheral circuit include capacitors C29, C30, C28, and C31.
  • control guidance detecting circuit of the embodiment of the present invention further includes a memory chip U2 connected to the central processing unit 10 as a storage expansion chip of the central processing unit 10 for detecting content and The result is stored.
  • FIG. 7 is a circuit diagram of the memory chip. As shown in FIG. 7, in the embodiment of the present invention, the memory chip U2 can be a FLASH memory chip of the type AT45DB161.
  • an embodiment of the present invention further provides a control guiding detecting device for a charging post, the control guiding detecting device comprising a control guiding detecting circuit of any charging post provided by the above content of the present invention.
  • the present invention realizes the detection of the safety and reliability of the charging process, and achieves the effect of ensuring safety.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

一种充电桩的控制导引检测电路和装置。其中,充电桩的控制导引检测电路包括:中央处理器;电压检测模块,与中央处理器相连接,用于检测充电桩的导引电压;PWM检测模块,与中央处理器相连接,用于检测充电桩的PWM波形的占空比;接口模块,用于连接充电电缆,并与中央处理器相连接;人机交互模块,与中央处理器相连接;以及供电模块,与中央处理器、电压检测模块、PWM检测模块和人机交互模块均相连接。该控制导引检测电路和装置解决了现有技术中无法检测充电桩充电过程的问题,进而达到了对充电桩进行控制导引检测,为安全性做出保障。

Description

充电桩的控制导引检测电路和装置 技术领域
本发明涉及电力技术领域,具体而言,涉及一种充电桩的控制导引检测电路和装置。
背景技术
大气污染日益加剧,电动汽车也越来越普及,充电设施的应用也越来越多,其性能的稳定直接影响电动汽车的推广,所以充电过程的安全性和可靠性至关重要。但是,目前却没有相应的检测设备对充电过程的安全性和可靠性进行检测。
针对相关技术中无法检测充电桩充电过程的问题,目前尚未提出有效的解决方案。
发明内容
本发明的主要目的在于提供一种充电桩的控制导引检测电路和装置,以解决现有技术中无法检测充电桩充电过程的问题。
根据本发明的一个方面,提供了一种充电桩的控制导引检测电路,包括:中央处理器;电压检测模块,与中央处理器相连接,用于检测充电桩的导引电压;PWM检测模块,与中央处理器相连接,用于检测充电桩的PWM波形的占空比;接口模块,用于连接充电电缆,并与中央处理器相连接;人机交互模块,与中央处理器相连接;以及供电模块,与中央处理器、电压检测模块、PWM检测模块和人机交互模块均相连接。
优选地,电压检测模块包括:运算放大器,输出端与中央处理器相连接,反相输入端与第一节点相连接,其中,第一节点为运算放大器的输出端与中央处理器之间的节点;第一电阻,连接在运算放大器的正相输入端与充电桩的电压检测端之间;第二电阻,连接在第二节点与信号地之间,其中,第二节点为第一电阻与运算放大器的正相输入端之间的节点;磁珠,连接在第一电阻与电压检测端之间;第一电容,连接在第三节点与信号地之间,其中,第三节点为磁珠与电压检测端之间的节点;以及第二电容,连接在第一节点与信号地之间。
优选地,电压检测模块还包括:第一二极管,阳极与磁珠相连接,阴极与第一电阻相连接;以及第二二极管,阳极与信号地相连接,阴极连接至第三节点。
优选地,PWM检测模块包括:光耦芯片,与中央处理器相连接;第一场效应管,栅极连接至PWM波形的第一输出端,源极连接至信号地;第三电阻,连接在第一场效应管的漏极与光耦芯片之间;第二场效应管,栅极连接至PWM波形的第二输出端,漏极连接至第一电压源,源极连接至信号地;第四电阻,连接在第一电压源与第二场效应管的漏极之间;以及第五电阻,连接在第四节点域光耦芯片之间,其中,第四节点为第二场效应管的漏极与第四电阻之间的节点。
优选地,人机交互模块包括:显示屏,与中央处理器相连接;以及滤波模块,连接在供电模块与显示屏之间。
优选地,供电模块包括:第一电压调节芯片,输入端与第一电压源相连接,输出端用于输出第一电压,其中,第一电压源的电压大于第一电压;以及第二电压调节芯片,输入单与第一电压调节芯片的输出端相连接,输出端用于输出第二电压,其中,第一电压大于第二电压。
优选地,控制导引检测电路还包括:存储芯片,与中央处理器相连接。
为了实现上述目的,根据本发明的另一方面,提供了一种充电桩的控制导引检测装置,包括本发明上述内容所提供的任一种充电桩的控制导引检测电路。
本发明采用具有以下结构的充电桩的控制导引检测电路:中央处理器;电压检测模块,与中央处理器相连接,用于检测充电桩的导引电压;PWM检测模块,与中央处理器相连接,用于检测充电桩的PWM波形的占空比;接口模块,用于连接充电电缆,并与中央处理器相连接;人机交互模块,与中央处理器相连接;以及供电模块,与中央处理器、电压检测模块、PWM检测模块和人机交互模块均相连接。通过接口模块连接充电电缆,通过电压检测模块检测充电桩的导引电压、PWM检测模块检测充电桩的PWM波形的占空比,并通过人界交互模块和中央处理器进行控制和处理,实现了对充电过程的安全性和可靠性进行检测,解决了现有技术中无法检测充电桩充电过程的问题,进而达到了对充电桩进行控制导引检测,为安全性做出保障。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1是根据本发明实施例的充电桩的控制导引检测电路的示意图;
图2是根据本发明实施例的充电桩的控制导引检测电路中中央处理器的电路图;
图3是根据本发明实施例的充电桩的控制导引检测电路中电压检测模块的电路图;
图4是根据本发明实施例的充电桩的控制导引检测电路中PWM检测模块的电路图;
图5是根据本发明实施例的充电桩的控制导引检测电路中人机交互模块的电路图;
图6是根据本发明实施例的充电桩的控制导引检测电路中供电模块的电路图;以及
图7是根据本发明实施例的充电桩的控制导引检测电路中存储芯片的电路图。
具体实施方式
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
本发明实施例提供了一种充电桩的控制导引检测电路,以下对本发明实施例所提供的充电桩的控制导引检测电路进行具体介绍:
图1是根据本发明实施例的充电桩的控制导引检测电路的示意图,如图1所示,该控制导引检测电路主要包括:中央处理器10、电压检测模块20、PWM(脉宽调制Pulse-Width Modulation,简称PWM)检测模块30、接口模块40、人机交互模块50和供电模块60,其中:
电压检测模块20、PWM检测模块30、接口模块40和人机交互模块50均与中央处理器10相连接,电压检测模块20用于检测充电桩的导引电压,进而确定充电桩的充电阶段。PWM检测模块30用于检测充电桩的PWM波形的占空比。接口模块40用于连接充电电缆,在本发明实施例中,接口模块40可以采用现有技术中任一种充电插座,用来模拟车端接口,在对充电桩进行检测时,接口模块40与充电电缆连接。人机交互模块50,用来显示检测内容和结果,并可以接收检测员的检测指令,确定具体的检测项目。供电模块60则与中央处理器10、电压检测模块20、PWM检测模块30和人机交互模块50均相连接,用于为各部分提供用电支持。
本发明实施例所提供的充电桩的控制导引检测电路,通过接口模块连接充电电缆,通过电压检测模块检测充电桩的导引电压、PWM检测模块检测充电桩的PWM波形的 占空比,并通过人界交互模块和中央处理器进行控制和处理,实现了对充电过程的安全性和可靠性进行检测,解决了现有技术中无法检测充电桩充电过程的问题,进而达到了对充电桩进行控制导引检测,为安全性做出保障。
优选地,中央处理器10的具体电路在图2中示出,如图2所示,中央处理器10主要包括处理器芯片STM32F107及该处理器芯片的外围电路,其外围电路主要包括晶振电路和复位电路,其中,晶振电路包括由晶振X1、电容C2和电容C4组成的第一晶振电路,以及由晶振X2、电容C12和电容C13组成的第二晶振电路。复位电路包括由开关SW1和电阻R4组成的第一复位电路,以及由开关SW2和电阻R9组成的第二复位电路。
图3是根据本发明实施例的充电桩的控制导引检测电路中电压检测模块20的电路图,如图3所示,电压检测模块20主要包括运算放大器B、第一电阻R46、第二电阻R47、磁珠FB21、第一电容C77和第二电容C78,其中,运算放大器B的输出端与中央处理器10相连接,反相输入端与第一节点相连接,其中,第一节点为运算放大器B的输出端与中央处理器10之间的节点。第一电阻R46连接在运算放大器B的正相输入端与充电桩的电压检测端之间。第二电阻R47连接在第二节点与信号地之间,其中,第二节点为第一电阻R46与运算放大器B的正相输入端之间的节点。磁珠FB21连接在第一电阻R46与电压检测端之间。第一电容C77连接在第三节点与信号地之间,其中,第三节点为磁珠FB21与电压检测端之间的节点。第二电容C78,连接在第一节点与信号地之间。
电压检测模块20的上述电路中,200K的第一电阻R46与51K的第二电阻R47构成分压电路,以降低输入电压,10nF的第一电容C77与磁珠FB21以及运算放大器B构成滤波电路,以滤除噪声,整个电路便是信号调理电路,将检测到的导引电压的模拟信号通过模数转换器送入中央处理器10。
优选地,电压检测模块20还包括第一二极管D8和第二二极管T14,其中,第一二极管D8的阳极与磁珠FB21相连接,阴极与第一电阻R46相连接。第二二极管T14的阳极与信号地相连接,阴极连接至第三节点,其中,第二二极管T14为瞬变电压抑制二极管。
图4是根据本发明实施例的充电桩的控制导引检测电路中PWM检测模块30的电路图,如图4所示,PWM检测模块30主要包括光耦芯片U3、第一场效应管Q1、第三电阻R32、第二场效应管Q2、第四电阻R42和第五电阻R36,其中,光耦芯片U3与中央处理器10相连接,并且光耦芯片U3通过电阻R33和R37连接3.3V直流供电 电压。第一场效应管Q1的栅极通过电阻R30连接至PWM波形的第一输出端,源极连接至信号地,漏极依次通过电阻R25和R24连接至栅极。第三电阻R32连接在第一场效应管Q1的漏极与光耦芯片U3之间。第二场效应管Q2的栅极通过电阻R46连接至PWM波形的第二输出端,漏极连接至第一电压源(12V直流电压源),栅极还通过电阻R44连接至该第一电压源,源极连接至信号地。第四电阻R42连接在第一电压源与第二场效应管Q2的漏极之间。第五电阻R36连接在第四节点域光耦芯片U3之间,其中,第四节点为第二场效应管Q2的漏极与第四电阻R42之间的节点。
PWM检测模块30的上述电路中,型号为2N7002的第一场效应管Q1和第二场效应管Q2构成驱动电路,以增强输入的电流驱动能力,并增大电压的输入范围;型号为TLP281的光耦芯片U3起到电压变换作用,将电压变为中央处理器10可以接受的0到3.3V电平。
图5是根据本发明实施例的充电桩的控制导引检测电路中人机交互模块50的电路图,如图5所示,人机交互模块50主要包括显示屏JP6和滤波模块,其中,显示屏JP6与中央处理器10相连接,在本发明实施例中,显示屏JP6可以采用128*64的点阵式液晶屏,通过SPI接口与中央处理器10连接,滤波模块连接在供电模块60与显示屏之间,以对显示屏JP6进行电源滤波,其中,滤波模块主要包括磁珠FBLCD、电容ZDC、电容C38B和电容C38。此外,人机交互模块50还可以包括键盘接口,以连接键盘,在本发明实施例中,键盘接口可以采用DB9的接口,以方便安装。
图6是根据本发明实施例的充电桩的控制导引检测电路中供电模块60的电路图,如图6所示,供电模块60主要包括第一电压调节芯片U7和第二电压调节芯片U5,其中,第一电压调节芯片U7输入端与第一电压源相连接,输出端用于输出第一电压,其中,第一电压源的电压大于第一电压,第二电压调节芯片U5输入单与第一电压调节芯片U7的输出端相连接,输出端用于输出第二电压,其中,第一电压大于第二电压。
在本发明实施例中,以第一电压为5V直流电压,第二电压为3.3V直流电压为例具体说明供电模块60的电路构成,其中,第一电压调节芯片U7可以采用DC-DC变换器,将12V电压变为5V电压,构成其外围电路的元器件包括电容C49、二极管D5、33Uh/2A磁屏蔽贴片电感L1和电容C50。第二电压调节芯片U5可以采用LDO,将5V电压变为3.3V电压,构成其外围电路的元器件包括电容C29、C30、C28和C31。
进一步地,本发明实施例的控制导引检测电路还包括存储芯片U2,该存储芯片U2与中央处理器10相连接,作为中央处理器10的存储扩展芯片,用于对检测内容和 结果进行存储,图7是存储芯片的电路图,如图7所示,在本发明实施例中,存储芯片U2可以采用型号为AT45DB161的FLASH存储芯片。
此外,本发明实施例还提供了一种充电桩的控制导引检测装置,该控制导引检测装置包括本发明上述内容所提供的任一种充电桩的控制导引检测电路。
从以上的描述中,可以看出,本发明实现了对充电过程的安全性和可靠性进行检测,达到了为安全性做出保障的效果。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (8)

  1. 一种充电桩的控制导引检测电路,包括:
    中央处理器(10);
    电压检测模块(20),与所述中央处理器(10)相连接,用于检测所述充电桩的导引电压;
    PWM检测模块(30),与所述中央处理器(10)相连接,用于检测所述充电桩的PWM波形的占空比;
    接口模块(40),用于连接充电电缆,并与所述中央处理器(10)相连接;
    人机交互模块(50),与所述中央处理器(10)相连接;以及
    供电模块(60),与所述中央处理器(10)、所述电压检测模块(20)、所述PWM检测模块(30)和所述人机交互模块(50)均相连接。
  2. 根据权利要求1所述的控制导引检测电路,其中,所述电压检测模块(20)包括:
    运算放大器(B),输出端与所述中央处理器(10)相连接,反相输入端与第一节点相连接,其中,所述第一节点为所述运算放大器(B)的输出端与所述中央处理器(10)之间的节点;
    第一电阻(R46),连接在所述运算放大器(B)的正相输入端与所述充电桩的电压检测端之间;
    第二电阻(R47),连接在第二节点与信号地之间,其中,所述第二节点为所述第一电阻(R46)与所述运算放大器(B)的正相输入端之间的节点;
    磁珠(FB21),连接在所述第一电阻(R46)与所述电压检测端之间;
    第一电容(C77),连接在第三节点与信号地之间,其中,所述第三节点为所述磁珠(FB21)与所述电压检测端之间的节点;以及
    第二电容(C78),连接在所述第一节点与信号地之间。
  3. 根据权利要求2所述的控制导引检测电路,其中,所述电压检测模块(20)还包括:
    第一二极管(D8),阳极与所述磁珠(FB21)相连接,阴极与所述第一电阻(R46)相连接;以及
    第二二极管(T14),阳极与信号地相连接,阴极连接至所述第三节点。
  4. 根据权利要求1所述的控制导引检测电路,其中,所述PWM检测模块(30)包括:
    光耦芯片(U3),与所述中央处理器(10)相连接;
    第一场效应管(Q1),栅极连接至所述PWM波形的第一输出端,源极连接至信号地;
    第三电阻(R32),连接在所述第一场效应管(Q1)的漏极与所述光耦芯片(U3)之间;
    第二场效应管(Q2),栅极连接至所述PWM波形的第二输出端,漏极连接至第一电压源,源极连接至信号地;
    第四电阻(R42),连接在所述第一电压源与所述第二场效应管(Q2)的漏极之间;以及
    第五电阻(R36),连接在第四节点域所述光耦芯片(U3)之间,其中,所述第四节点为所述第二场效应管(Q2)的漏极与所述第四电阻(R42)之间的节点。
  5. 根据权利要求1所述的控制导引检测电路,其中,所述人机交互模块(50)包括:
    显示屏(JP6),与所述中央处理器(10)相连接;以及
    滤波模块,连接在所述供电模块(60)与所述显示屏之间。
  6. 根据权利要求1所述的控制导引检测电路,其中,所述供电模块(60)包括:
    第一电压调节芯片(U7),输入端与第一电压源相连接,输出端用于输出第一电压,其中,所述第一电压源的电压大于所述第一电压;以及
    第二电压调节芯片(U5),输入单与所述第一电压调节芯片(U7)的输出端相连接,输出端用于输出第二电压,其中,所述第一电压大于所述第二电压。
  7. 根据权利要求1所述的控制导引检测电路,其中,所述控制导引检测电路还包括:
    存储芯片(U2),与所述中央处理器(10)相连接。
  8. 一种充电桩的控制导引检测装置,包括权利要求1至7中任一项所述的充电桩的控制导引检测电路。
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