CN108879801A - A kind of driving circuit applied in charging pile - Google Patents
A kind of driving circuit applied in charging pile Download PDFInfo
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- CN108879801A CN108879801A CN201710319149.XA CN201710319149A CN108879801A CN 108879801 A CN108879801 A CN 108879801A CN 201710319149 A CN201710319149 A CN 201710319149A CN 108879801 A CN108879801 A CN 108879801A
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- 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
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
本发明涉及充电桩技术领域，特别涉及一种应用于充电桩内的驱动电路；本发明包括电压比较输出电路、推挽稳定输出电路、连接成功判断电路、比较判断启动电路和判断启动充电电路；在本发明中，电压比较输出电路控制电压比较输出PWM波至推挽稳定输出电路，推挽稳定输出电路稳定输出PWM波至连接成功判断电路，连接成功判断电路判断是否连接成功启动通讯，比较判断启动电路比较判断是否启动输出PWM波至判断启动充电电路，如果通过比较发现电流过流，比较判断启动电路断电，不输出PWM波；如果通过比较一切正常，比较判断启动电路输出PWM波至判断启动充电电路，从而控制进行充电。
The invention relates to the technical field of charging piles, in particular to a driving circuit applied in charging piles; the invention includes a voltage comparison output circuit, a push-pull stable output circuit, a connection success judging circuit, a comparison judging startup circuit and a judging startup charging circuit; In the present invention, the voltage comparison output circuit controls the voltage comparison output PWM wave to the push-pull stable output circuit, and the push-pull stable output circuit stably outputs the PWM wave to the connection success judgment circuit, and the connection success judgment circuit judges whether the connection is successful and starts communication, and compares and judges The starting circuit compares and judges whether to start the output PWM wave to judge whether to start the charging circuit. If the current overcurrent is found by comparison, the comparison judges that the starting circuit is powered off and does not output PWM waves; Start the charging circuit, so as to control the charging.
Description
技术领域technical field
本发明涉及充电桩技术领域，特别涉及一种应用于充电桩内的驱动电路。The invention relates to the technical field of charging piles, in particular to a driving circuit applied in charging piles.
背景技术Background technique
充电桩其功能类似于加油站里面的加油机，可以固定在地面或墙壁，安装于公共建筑（公共楼宇、商场、公共停车场等）和居民小区停车场或充电站内，可以根据不同的电压等级为各种型号的电动汽车充电。The function of the charging pile is similar to that of the fuel dispenser in the gas station. It can be fixed on the ground or on the wall, and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential area parking lots or charging stations. Charge all models of electric vehicles.
充电桩的输入端与交流电网直接连接，输出端都装有充电插头用于为电动汽车充电。The input end of the charging pile is directly connected to the AC grid, and the output end is equipped with a charging plug for charging the electric vehicle.
充电桩一般提供常规充电和快速充电两种充电方式，人们可以使用特定的充电卡在充电桩提供的人机交互操作界面上刷卡使用，进行相应的充电方式、充电时间、费用数据打印等操作，充电桩显示屏能显示充电量、费用、充电时间等数据。Charging piles generally provide two charging methods: conventional charging and fast charging. People can use a specific charging card to swipe the card on the human-computer interaction interface provided by the charging pile to perform corresponding charging methods, charging time, and cost data printing. The display screen of the charging pile can display data such as charging amount, cost, and charging time.
充电桩能实现计时、计电度、计金额充电，可以作为市民购电终端，同时为提高公共充电桩的效率和实用性，今后将陆续增加一桩多充和为电动自行车充电的功能。Charging piles can realize timing, electricity metering, and amount charging. They can be used as electricity purchase terminals for citizens.
充电桩给汽车充电过程由于功率大，必将会引起诸多的安全性问题，如何减小充电的安全隐患是厂家高度关注的事情。Due to the high power of the charging pile to charge the car, it will inevitably cause many safety problems. How to reduce the safety hazards of charging is a matter of great concern to manufacturers.
发明内容Contents of the invention
为了克服上述所述的不足，本发明的目的是提供一种应用于充电桩内的驱动电路，其使通讯稳定还进行过流断电保护，提高安全稳定性。In order to overcome the disadvantages mentioned above, the purpose of the present invention is to provide a driving circuit applied in the charging pile, which can stabilize communication and perform over-current power-off protection, thereby improving safety and stability.
本发明解决其技术问题的技术方案是：The technical scheme that the present invention solves its technical problem is:
一种应用于充电桩内的驱动电路，其设置在充电桩内的保护芯片上，其中，包括用于控制电压比较输出PWM波至推挽稳定输出电路的电压比较输出电路、用于输出稳定的PWM波至连接成功判断电路的推挽稳定输出电路、用于判断是否连接成功启动通讯的连接成功判断电路、用于比较判断是否启动输出PWM波至判断启动充电电路的比较判断启动电路和用于判断是否输出交流电的判断启动充电电路。A driving circuit applied in a charging pile, which is arranged on a protection chip in the charging pile, including a voltage comparison output circuit for controlling a voltage comparison output PWM wave to a push-pull stable output circuit, and a voltage comparison output circuit for output stabilization The push-pull stable output circuit of the PWM wave arrival judgment circuit, the connection success judgment circuit used to judge whether the connection is successful and start communication, the comparison judgment startup circuit used to judge whether to start the output PWM wave arrival judgment startup charging circuit, and the Judging whether to output alternating current starts the charging circuit.
作为本发明的一种改进，电压比较输出电路包括电阻R60、电阻R61、电阻R62、电容C55、电容C57、电压比较器U8A；所述电压比较器U8A的第2脚和第3脚为输入比较端，所述电压比较器U8A的第3脚分别与电阻R61的一端、电阻R62的一端连接，电阻R62的另一端接地；所述电压比较器U8A的第4脚与电容C55的一端连接，电容C55的另一端接地；所述电压比较器U8A的第5脚分别与电容C57的一端、电阻R60的一端连接，电阻R60的另一端与电压比较器U8A的第1脚连接；所述电压比较器U8A的第1脚与推挽稳定输出电路连接。As an improvement of the present invention, the voltage comparison output circuit includes a resistor R60, a resistor R61, a resistor R62, a capacitor C55, a capacitor C57, and a voltage comparator U8A; the second pin and the third pin of the voltage comparator U8A are input comparison terminal, the third pin of the voltage comparator U8A is connected to one end of the resistor R61 and one end of the resistor R62 respectively, and the other end of the resistor R62 is grounded; the fourth pin of the voltage comparator U8A is connected to one end of the capacitor C55, and the capacitor The other end of C55 is grounded; the fifth pin of the voltage comparator U8A is connected to one end of the capacitor C57 and one end of the resistor R60 respectively, and the other end of the resistor R60 is connected to the first pin of the voltage comparator U8A; the voltage comparator Pin 1 of U8A is connected to the push-pull stable output circuit.
作为本发明的进一步改进，所述推挽稳定输出电路包括三极管Q17、三极管Q18、电阻R58、电阻R59、电阻R64、电阻R66、电容C56、二极管D19、二极管D20，所述电压比较器U8A的第1脚与二极管D19的阳极、二极管D20的阴极连接，二极管D19的阴极与电阻R59的一端连接，电阻R59的另一端与三极管Q17的基极连接，三极管Q17的集电极与电阻R58的一端连接，电阻R58的另一端与电容C56的一端连接，电容C56的另一端与电阻R66的一端连接，电阻R66的另一端与三极管Q18的集电极连接，三极管Q18的基极与电阻R64的一端连接，电阻R64的另一端与二极管D20的阳极连接，三极管Q18的发射极与三极管Q17的发射极连接，三极管Q18的发射极与三极管Q17的发射极均与连接成功判断电路连接。As a further improvement of the present invention, the push-pull stable output circuit includes a triode Q17, a triode Q18, a resistor R58, a resistor R59, a resistor R64, a resistor R66, a capacitor C56, a diode D19, and a diode D20. Pin 1 is connected to the anode of diode D19 and the cathode of diode D20, the cathode of diode D19 is connected to one end of resistor R59, the other end of resistor R59 is connected to the base of transistor Q17, the collector of transistor Q17 is connected to one end of resistor R58, The other end of the resistor R58 is connected to one end of the capacitor C56, the other end of the capacitor C56 is connected to one end of the resistor R66, the other end of the resistor R66 is connected to the collector of the transistor Q18, the base of the transistor Q18 is connected to one end of the resistor R64, and the resistor The other end of R64 is connected to the anode of the diode D20, the emitter of the transistor Q18 is connected to the emitter of the transistor Q17, and the emitter of the transistor Q18 and the emitter of the transistor Q17 are both connected to the successful connection judging circuit.
作为本发明的更进一步改进，所述连接成功判断电路包括电阻R88、电阻R89、电容C62、电容C70和二极管D18，电阻R88的一端、电阻R89的一端、电容C70的一端均与A点连接，A点与所述推挽稳定输出电路连接，电阻R89的另一端、电容C70的另一端均接地，电阻R88的另一端分别与二极管D18的阴极、电容C62的一端连接，电容C62的另一端接地，二极管D18的阳极与所述比较判断启动电路连接。As a further improvement of the present invention, the connection success judging circuit includes a resistor R88, a resistor R89, a capacitor C62, a capacitor C70 and a diode D18, one end of the resistor R88, one end of the resistor R89, and one end of the capacitor C70 are all connected to point A, Point A is connected to the push-pull stable output circuit, the other end of the resistor R89 and the other end of the capacitor C70 are grounded, the other end of the resistor R88 is respectively connected to the cathode of the diode D18 and one end of the capacitor C62, and the other end of the capacitor C62 is grounded , the anode of the diode D18 is connected to the comparison judgment startup circuit.
作为本发明的更进一步改进，所述比较判断启动电路包括电阻R86、电阻R87、电阻R95、三极管Q19和电容C61，电阻R86的一端、电阻R95的一端、三极管Q19的集电极均与B点连接，B点与连接成功判断电路连接，三极管Q19的发射极与电容C61的一端连接，电容C61的另一端分别与三极管Q19的基极、电阻R87的一端、电阻R86的另一端连接，电阻R95的另一端与判断启动充电电路连接。As a further improvement of the present invention, the comparison and judgment startup circuit includes a resistor R86, a resistor R87, a resistor R95, a transistor Q19 and a capacitor C61, and one end of the resistor R86, one end of the resistor R95, and the collector of the transistor Q19 are all connected to point B , point B is connected to the successful connection judging circuit, the emitter of the triode Q19 is connected to one end of the capacitor C61, the other end of the capacitor C61 is respectively connected to the base of the triode Q19, one end of the resistor R87, and the other end of the resistor R86, and the other end of the resistor R95 The other end is connected with the judging and starting charging circuit.
作为本发明的更进一步改进，所述判断启动充电电路包括三极管Q12、三极管Q18、电压比较器U8B、稳压二极管D13、二级管D20、电阻R63、电阻R64、电阻R65、电阻R66、电阻R67、电阻R71、电阻R72、电阻R74、电阻R121和电容C59；电阻R121的一端与比较判断启动电路连接，电阻R121的另一端分别与电压比较器U8B的第7脚、电阻R72的一端连接，电阻R72的另一端分别与电容C59的一端、三极管Q12的基极连接，电容C59的另一端与三极管Q12的发射极连接，三极管Q12的集电极与电阻R67连接，电压比较器U8B的第5脚分别与电阻R74、电阻R71连接，电压比较器U8B的第6脚与电阻65的一端连接，电阻R65的另一端分别与稳压二极管D13的一端、输出端CN2、电阻R63的一端连接，电阻R63的另一端与三极管Q18的发射极连接，三极管Q18的集电极与电阻R66的连接，三极管Q18的基极与电阻R64的一端连接，电阻R64的另一端与二极管D20连接，稳压二极管D13的另一端与输出端CN11连接。As a further improvement of the present invention, the judgment startup charging circuit includes triode Q12, triode Q18, voltage comparator U8B, Zener diode D13, diode D20, resistor R63, resistor R64, resistor R65, resistor R66, resistor R67 , resistor R71, resistor R72, resistor R74, resistor R121 and capacitor C59; one end of the resistor R121 is connected to the comparative judgment starting circuit, and the other end of the resistor R121 is respectively connected to the 7th pin of the voltage comparator U8B and one end of the resistor R72, and the resistor The other end of R72 is respectively connected to one end of capacitor C59 and the base of transistor Q12, the other end of capacitor C59 is connected to the emitter of transistor Q12, the collector of transistor Q12 is connected to resistor R67, and the fifth pin of voltage comparator U8B is respectively Connect with resistor R74 and resistor R71, the 6th pin of voltage comparator U8B is connected with one end of resistor 65, the other end of resistor R65 is respectively connected with one end of Zener diode D13, output terminal CN2, and one end of resistor R63, and the other end of resistor R63 The other end is connected to the emitter of the transistor Q18, the collector of the transistor Q18 is connected to the resistor R66, the base of the transistor Q18 is connected to one end of the resistor R64, the other end of the resistor R64 is connected to the diode D20, and the other end of the Zener diode D13 Connect with the output terminal CN11.
在本发明中，电压比较输出电路控制电压比较输出PWM波至推挽稳定输出电路，推挽稳定输出电路稳定输出PWM波至连接成功判断电路，连接成功判断电路判断是否连接成功启动通讯，比较判断启动电路比较判断是否启动输出PWM波至判断启动充电电路，如果通过比较发现电流过流，比较判断启动电路断电，不输出PWM波；如果通过比较一切正常，比较判断启动电路输出PWM波至判断启动充电电路，从而控制进行充电；本发明使通讯稳定还进行过流断电保护，提高安全稳定性。In the present invention, the voltage comparison output circuit controls the voltage comparison to output PWM waves to the push-pull stable output circuit, and the push-pull stable output circuit stably outputs PWM waves to the connection success judgment circuit, and the connection success judgment circuit judges whether the connection is successful and starts communication, and compares and judges The starting circuit compares and judges whether to start the output PWM wave to judge whether to start the charging circuit. If the current overcurrent is found through the comparison, the comparison judges that the starting circuit is powered off and does not output PWM waves; The charging circuit is started to control the charging; the invention stabilizes the communication and performs over-current and power-off protection to improve safety and stability.
附图说明Description of drawings
为了易于说明，本发明由下述的较佳实施例及附图作以详细描述。For ease of illustration, the present invention is described in detail by the following preferred embodiments and accompanying drawings.
图1为本发明的电压比较输出电路的电路图；Fig. 1 is the circuit diagram of voltage comparison output circuit of the present invention;
图2为本发明的推挽稳定输出电路的电路图；Fig. 2 is the circuit diagram of the push-pull stable output circuit of the present invention;
图3为本发明的连接成功判断电路、比较判断启动电路、判断启动充电电路的连接电路图；Fig. 3 is a connection circuit diagram of the connection success judging circuit, the comparison judging startup circuit, and the judging startup charging circuit of the present invention;
附图标记：1-电压比较输出电路，2-推挽稳定输出电路，3-连接成功判断电路，4-比较判断启动电路，5-判断启动充电电路。Reference signs: 1 - voltage comparison output circuit, 2 - push-pull stable output circuit, 3 - judging circuit for successful connection, 4 - comparison and judging start circuit, 5 - judging and starting charging circuit.
具体实施方式Detailed ways
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
如图1、图2和图3所示，本发明的一种应用于充电桩内的驱动电路，其设置在充电桩内的保护芯片上，包括用于控制电压比较输出PWM波至推挽稳定输出电路2的电压比较输出电路1、用于输出稳定的PWM波至连接成功判断电路3的推挽稳定输出电路2、用于判断是否连接成功启动通讯的连接成功判断电路3、用于比较判断是否启动输出PWM波至判断启动充电电路5的比较判断启动电路4和用于判断是否输出交流电的判断启动充电电路5。As shown in Fig. 1, Fig. 2 and Fig. 3, a driving circuit of the present invention applied in the charging pile is set on the protection chip in the charging pile, including the control voltage comparison output PWM wave to the push-pull stable The voltage comparison output circuit 1 of the output circuit 2 is used to output stable PWM waves to the push-pull stable output circuit 2 of the connection success judgment circuit 3, and the connection success judgment circuit 3 used to judge whether the connection is successful and start communication is used for comparison judgment Whether to start the output PWM wave arrival judgment to start the comparison judgment start circuit 4 of the charging circuit 5 and the judgment start charging circuit 5 for judging whether to output alternating current.
在本发明中，电压比较输出电路1控制电压比较输出PWM波至推挽稳定输出电路2，推挽稳定输出电路2稳定输出PWM波至连接成功判断电路3，连接成功判断电路3判断是否连接成功启动通讯，比较判断启动电路4比较判断是否启动输出PWM波至判断启动充电电路5，如果通过比较发现电流过流，比较判断启动电路4断电，不输出PWM波；如果通过比较一切正常，比较判断启动电路4输出PWM波至判断启动充电电路5，从而控制进行充电。In the present invention, the voltage comparison output circuit 1 controls the voltage comparison output PWM wave to the push-pull stable output circuit 2, and the push-pull stable output circuit 2 stably outputs the PWM wave to the connection success judgment circuit 3, and the connection success judgment circuit 3 judges whether the connection is successful Start the communication, compare and judge whether the starting circuit 4 compares and judges whether to start the output PWM wave to judge the starting charging circuit 5, if the current overcurrent is found by comparison, compare and judge that the starting circuit 4 is powered off, and does not output PWM waves; if everything is normal through the comparison, compare The judging start circuit 4 outputs a PWM wave to the judging and starting charging circuit 5 to control charging.
如图1所示，本发明提供电压比较输出电路1的一种实施例，电压比较输出电路1包括电阻R60、电阻R61、电阻R62、电容C55、电容C57、电压比较器U8A；所述电压比较器U8A的第2脚和第3脚为输入比较端，所述电压比较器U8A的第3脚分别与电阻R61的一端、电阻R62的一端连接，电阻R62的另一端接地；所述电压比较器U8A的第4脚与电容C55的一端连接，电容C55的另一端接地；所述电压比较器U8A的第5脚分别与电容C57的一端、电阻R60的一端连接，电阻R60的另一端与电压比较器U8A的第1脚连接；所述电压比较器U8A的第1脚与推挽稳定输出电路连接。As shown in Figure 1, the present invention provides a kind of embodiment of voltage comparison output circuit 1, and voltage comparison output circuit 1 comprises resistance R60, resistance R61, resistance R62, electric capacity C55, electric capacity C57, voltage comparator U8A; Said voltage comparison The second pin and the third pin of the voltage comparator U8A are input comparison terminals, the third pin of the voltage comparator U8A is respectively connected to one end of the resistor R61 and one end of the resistor R62, and the other end of the resistor R62 is grounded; the voltage comparator The 4th pin of U8A is connected with one end of the capacitor C55, and the other end of the capacitor C55 is grounded; the 5th pin of the voltage comparator U8A is respectively connected with one end of the capacitor C57 and one end of the resistor R60, and the other end of the resistor R60 is compared with the voltage The first pin of the voltage comparator U8A is connected; the first pin of the voltage comparator U8A is connected with the push-pull stable output circuit.
如图2所示，本发明提供推挽稳定输出电路2的一种实施方式，推挽稳定输出电路2包括三极管Q17、三极管Q18、电阻R58、电阻R59、电阻R64、电阻R66、电容C56、二极管D19、二极管D20，所述电压比较器U8A的第1脚与二极管D19的阳极、二极管D20的阴极连接，二极管D19的阴极与电阻R59的一端连接，电阻R59的另一端与三极管Q17的基极连接，三极管Q17的集电极与电阻R58的一端连接，电阻R58的另一端与电容C56的一端连接，电容C56的另一端与电阻R66的一端连接，电阻R66的另一端与三极管Q18的集电极连接，三极管Q18的基极与电阻R64的一端连接，电阻R64的另一端与二极管D20的阳极连接，三极管Q18的发射极与三极管Q17的发射极连接，三极管Q18的发射极与三极管Q17的发射极均与连接成功判断电路连接。As shown in Figure 2, the present invention provides an embodiment of the push-pull stable output circuit 2. The push-pull stable output circuit 2 includes a transistor Q17, a transistor Q18, a resistor R58, a resistor R59, a resistor R64, a resistor R66, a capacitor C56, a diode D19, diode D20, the first leg of the voltage comparator U8A is connected to the anode of the diode D19 and the cathode of the diode D20, the cathode of the diode D19 is connected to one end of the resistor R59, and the other end of the resistor R59 is connected to the base of the transistor Q17 , the collector of the transistor Q17 is connected to one end of the resistor R58, the other end of the resistor R58 is connected to one end of the capacitor C56, the other end of the capacitor C56 is connected to one end of the resistor R66, and the other end of the resistor R66 is connected to the collector of the transistor Q18, The base of the transistor Q18 is connected to one end of the resistor R64, the other end of the resistor R64 is connected to the anode of the diode D20, the emitter of the transistor Q18 is connected to the emitter of the transistor Q17, and the emitter of the transistor Q18 is connected to the emitter of the transistor Q17. The connection is successful to judge the circuit connection.
如图3所示，本发明提供连接成功判断电路3的一种实施例，连接成功判断电路3包括电阻R88、电阻R89、电容C62、电容C70和二极管D18，电阻R88的一端、电阻R89的一端、电容C70的一端均与A点连接，A点与所述推挽稳定输出电路连接，电阻R89的另一端、电容C70的另一端均接地，电阻R88的另一端分别与二极管D18的阴极、电容C62的一端连接，电容C62的另一端接地，二极管D18的阳极与所述比较判断启动电路连接。As shown in Figure 3, the present invention provides a kind of embodiment of connection success judging circuit 3, and connection success judging circuit 3 comprises resistance R88, resistance R89, electric capacity C62, electric capacity C70 and diode D18, one end of resistance R88, one end of resistance R89 1. One end of capacitor C70 is connected to point A, point A is connected to the push-pull stable output circuit, the other end of resistor R89 and the other end of capacitor C70 are grounded, and the other end of resistor R88 is respectively connected to the cathode of diode D18, the capacitor One end of C62 is connected, the other end of capacitor C62 is grounded, and the anode of diode D18 is connected to the comparison and judgment starting circuit.
比较判断启动电路4包括电阻R86、电阻R87、电阻R95、三极管Q19和电容C61，电阻R86的一端、电阻R95的一端、三极管Q19的集电极均与B点连接，B点与连接成功判断电路连接，三极管Q19的发射极与电容C61的一端连接，电容C61的另一端分别与三极管Q19的基极、电阻R87的一端、电阻R86的另一端连接，电阻R95的另一端与判断启动充电电路连接。Comparison and judgment starting circuit 4 includes resistor R86, resistor R87, resistor R95, transistor Q19 and capacitor C61, one end of resistor R86, one end of resistor R95, and the collector of transistor Q19 are all connected to point B, and point B is connected to the connection success judging circuit , the emitter of the transistor Q19 is connected to one end of the capacitor C61, the other end of the capacitor C61 is respectively connected to the base of the transistor Q19, one end of the resistor R87, and the other end of the resistor R86, and the other end of the resistor R95 is connected to the judging start-up charging circuit.
判断启动充电电路5包括三极管Q12、三极管Q18、电压比较器U8B、稳压二极管D13、二级管D20、电阻R63、电阻R64、电阻R65、电阻R66、电阻R67、电阻R71、电阻R72、电阻R74、电阻R121和电容C59；电阻R121的一端与比较判断启动电路连接，电阻R121的另一端分别与电压比较器U8B的第7脚、电阻R72的一端连接，电阻R72的另一端分别与电容C59的一端、三极管Q12的基极连接，电容C59的另一端与三极管Q12的发射极连接，三极管Q12的集电极与电阻R67连接，电压比较器U8B的第5脚分别与电阻R74、电阻R71连接，电压比较器U8B的第6脚与电阻65的一端连接，电阻R65的另一端分别与稳压二极管D13的一端、输出端CN2、电阻R63的一端连接，电阻R63的另一端与三极管Q18的发射极连接，三极管Q18的集电极与电阻R66的连接，三极管Q18的基极与电阻R64的一端连接，电阻R64的另一端与二极管D20连接，稳压二极管D13的另一端与输出端CN11连接。Judgment start charging circuit 5 includes transistor Q12, transistor Q18, voltage comparator U8B, voltage regulator diode D13, diode D20, resistor R63, resistor R64, resistor R65, resistor R66, resistor R67, resistor R71, resistor R72, resistor R74 , resistor R121 and capacitor C59; one end of resistor R121 is connected to the comparison and judgment starting circuit, the other end of resistor R121 is respectively connected to pin 7 of voltage comparator U8B, and one end of resistor R72, and the other end of resistor R72 is respectively connected to capacitor C59 One end is connected to the base of the transistor Q12, the other end of the capacitor C59 is connected to the emitter of the transistor Q12, the collector of the transistor Q12 is connected to the resistor R67, the fifth pin of the voltage comparator U8B is connected to the resistor R74 and the resistor R71 respectively, and the voltage The 6th pin of the comparator U8B is connected to one end of the resistor 65, the other end of the resistor R65 is respectively connected to one end of the Zener diode D13, the output terminal CN2, and one end of the resistor R63, and the other end of the resistor R63 is connected to the emitter of the triode Q18 , the collector of the transistor Q18 is connected to the resistor R66, the base of the transistor Q18 is connected to one end of the resistor R64, the other end of the resistor R64 is connected to the diode D20, and the other end of the Zener diode D13 is connected to the output terminal CN11.
比较判断启动电路4和连接成功判断电路3及判断启动充电电路5内，CN2与CN11通过端子与外部电动汽车接口连接，成功连接时cc端接入低电平，此时三极管Q19截止，检测点PETEX检测到高电压，允许通讯，反之则不允许通讯。在连接成功允许通讯的情况下，cp检测点电压为9伏电压，通过电压比较器U8B比较输出正13伏电压，经过与三极管Q12的基极相连组成一个开关，此时三极管Q12导通，9vDetection检测点为低电压，启动PWM波，推挽稳定输出电路2输出正负9伏的PWM波，若此时外部连接通讯启动允许充电状态，cp检测点变为6v的PWM波输出，经过判断启动充电电路5输出一个0~1.22v的电压，检测点连接电压比较输出电路1内电压比较器U8A，组成一个窗口比较器，与6v Detestion检测点比较，在此范围内允许交流电32A电流输出给电动汽车充电；其它不在窗口比较的范围内都不允许充电或者停止充电，使得充电更加安全可靠。Comparing and judging the startup circuit 4 and the connection success judging circuit 3 and judging the startup charging circuit 5, CN2 and CN11 are connected to the external electric vehicle interface through terminals. When the connection is successful, the cc terminal is connected to a low level. At this time, the triode Q19 is cut off, and the detection point PETEX detects a high voltage and allows communication, otherwise it does not allow communication. When the connection is successful and the communication is allowed, the voltage of the cp detection point is 9 volts, and the voltage comparator U8B compares and outputs a positive 13 volts, which is connected to the base of the triode Q12 to form a switch. At this time, the triode Q12 is turned on, and 9vDetection The detection point is low voltage, start the PWM wave, and the push-pull stable output circuit 2 outputs a PWM wave of plus or minus 9 volts. If the external connection communication starts to allow the charging state at this time, the cp detection point becomes a 6v PWM wave output, and starts after judgment The charging circuit 5 outputs a voltage of 0~1.22v, and the detection point is connected to the voltage comparator U8A in the voltage comparison output circuit 1 to form a window comparator, which is compared with the 6v Detestation detection point, and the AC 32A current is allowed to output to the electric motor within this range. Car charging; Others not within the scope of window comparison are not allowed to charge or stop charging, making charging safer and more reliable.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.
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