WO2021057407A1 - Système et procédé de détection d'activation-désactivation d'excitation de relais de dispositif de protection de charge de véhicule à énergie nouvelle - Google Patents

Système et procédé de détection d'activation-désactivation d'excitation de relais de dispositif de protection de charge de véhicule à énergie nouvelle Download PDF

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Publication number
WO2021057407A1
WO2021057407A1 PCT/CN2020/112792 CN2020112792W WO2021057407A1 WO 2021057407 A1 WO2021057407 A1 WO 2021057407A1 CN 2020112792 W CN2020112792 W CN 2020112792W WO 2021057407 A1 WO2021057407 A1 WO 2021057407A1
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WO
WIPO (PCT)
Prior art keywords
relay
triode
electrically connected
new energy
pole
Prior art date
Application number
PCT/CN2020/112792
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English (en)
Chinese (zh)
Inventor
宋小辉
黄龙强
Original Assignee
深圳市利成科技有限公司
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Application filed by 深圳市利成科技有限公司 filed Critical 深圳市利成科技有限公司
Publication of WO2021057407A1 publication Critical patent/WO2021057407A1/fr

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Classifications

    • 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

Definitions

  • the invention relates to the technical field of circuit detection, in particular to a new energy vehicle charging protection device relay on-off detection system and method.
  • the existing technology only controls the on and off of the relay through the control system, and does not check and verify the actual on and off results of each relay. This not only fails to locate the fault by itself, but even brings certain hidden dangers to the safety of the user. Once the relay fails, if it cannot be connected normally, it cannot be charged normally; if it is stuck and cannot be disconnected, it will bring the user a risk of electric shock.
  • the purpose of the present invention is to overcome the shortcomings and defects of the prior art, and provide a new energy vehicle charging protection device relay on-off detection system and method, which can independently detect the on-off results of the two loops of L and N.
  • a new energy vehicle charging protection device relay on-off detection system a double relay charging device including an L pole relay and an N pole relay, and the input terminal of the L pole relay is connected to the N pole.
  • the output terminal of the pole relay is connected to the first feedback circuit, and the output terminal of the L pole relay and the input terminal of the N pole relay are connected to a second feedback circuit.
  • the components in the first feedback circuit include a first diode, a first photocoupler, and a first triode, and the input end of the L-pole relay is electrically connected to the anode of the first diode ,
  • the cathode of the first diode is electrically connected to the output terminal of the N-pole relay through the connecting surface of the first photocoupler, and the output surface of the first photocoupler is connected to the base of the first triode Electrically connected, the emitter of the first triode is electrically connected to the MCU.
  • the components in the second feedback circuit include a second diode, a second photocoupler, and a second triode.
  • the input terminal of the N-pole relay is electrically connected to the anode of the second diode.
  • the cathode of the second diode is electrically connected to the output terminal of the L-pole relay through the connecting surface of the second photocoupler, and the output surface of the second photocoupler is connected to the base of the first triode.
  • the electrode is electrically connected, and the emitter of the first triode is electrically connected to the CPU.
  • the collector of the first triode is connected to the base with a bias circuit and is connected to an external voltage at the same time, and the emitter of the first triode is grounded and electrically connected to the MCU at the same time.
  • the collector of the second triode is connected to the base with a bias circuit and is connected to an external voltage at the same time, and the emitter of the second triode is grounded and electrically connected to the MCU at the same time.
  • the first feedback circuit and the second feedback circuit further include a number of protection resistors.
  • the new energy vehicle charging protection device relay on-off detection method uses the new energy vehicle charging protection device relay on-off detection system to detect the on-off detection of the dual-relay charging device.
  • the present invention includes the following advantages and beneficial effects: (1)
  • the present invention provides a method capable of separately detecting the on-off results of the two loops L and N.
  • each relay is designed as a single relay loop, and the on-off of the loop is detected through the photocoupler and the triode. So as to achieve the purpose of detecting whether the relay is on and off well.
  • the control system can know exactly whether the relay is on and off properly, so as to improve the self-checking ability of the product and provide users with the greatest safety guarantee.
  • This patented technology is not only suitable for automobile charging protection devices, but also for battery charging protection devices for products such as battery cars, and can also be applied to other protection devices that require dual relays to control energization.
  • Figure 1 is a circuit connection diagram of the present invention.
  • the present invention relates to a new energy vehicle charging protection device relay on-off detection system in the technical field of circuit detection. It is based on an L pole relay PL1 with a control L pole and a control N pole.
  • the N-pole relay PL2 is the circuit on-off detection system of the dual-relay charging device.
  • the two ends of the L pole relay that controls the L pole are the input terminal L_in and the output terminal L_out; the two ends of the N pole relay that controls the N pole are the input terminal N_in and the output terminal N_out, between L_in and N_out
  • L_in and L_out are set at both ends of the L-pole relay switch
  • N_in and N_out are set at both ends of the N-pole relay switch.
  • the components in the first feedback circuit include a first diode D1, a first photocoupler U1, and a first transistor Q1.
  • the input terminal L_in of the L-pole relay RL1 is electrically connected to the anode of the first diode D1
  • the cathode of the first diode D1 is electrically connected to the output terminal N_out of the N-pole relay RL2 through the connection surface of the first photocoupler U1, and the output surface of the first photocoupler U1 is electrically connected to the base electrode of the first transistor Q1.
  • the emitter of the first triode is electrically connected to the MCU.
  • a protection resistor R1 is connected in series between L_in and N_out, the first transistor Q1 is provided with a bias circuit, an external voltage VDD is added to the collector, and the emitter is connected to the output of the photocoupler U1.
  • the terminal is connected into a ground loop, and at the same time, it is electrically connected with the MCU through the data socket.
  • the components in the second feedback circuit include a second diode D2, a second photocoupler U2, and a second transistor Q2.
  • the input terminal N_in of the N-pole relay RL2 is electrically connected to the anode of the second diode D2
  • the cathode of the second diode D2 is electrically connected to the output terminal L_out of the L-pole relay RL1 through the connecting surface of the second photocoupler U2, and the output surface of the second photocoupler U2 is electrically connected to the base electrode of the second transistor Q2.
  • the emitter of the second transistor Q2 is electrically connected to the CPU.
  • a protective resistor R4 is connected in series between L_in and N_out, the second transistor Q2 is provided with a bias circuit, an external voltage VDD is added to the collector, and the emitter is connected to the output of the photocoupler U2.
  • the terminal is connected into a ground loop, and at the same time, it is electrically connected to the CPU through the data socket.
  • the amplifier composed of transistors must ensure that the emitter junction of the transistor is forward biased and the collector junction is reverse biased, that is, set its operating point.
  • the base, emitter and collector of the transistor are at the required potential VDD through the setting of the external circuit.
  • the value of VDD is obtained by calculation.
  • the diode can be understood as an electronic version of backstop valve.
  • the L-pole relay PL1 and the N-pole relay PL2 work normally, the first feedback circuit and the second feedback circuit are energized at the same time, and the MCU or CPU receives the electrical signal, otherwise, it cannot receive the electrical signal.
  • the triode has a current amplification effect, and its essence is that the triode can control the larger change of the collector current with a small change of the base current. This is the most basic and important characteristic of the triode.
  • the first triode Q1 and the second triode Q2 select PNP type transistors to realize the amplification of the small current input by the base electrode, and the electric signal is transmitted to the MCU or CPU by the emitter electrode.
  • CPU is the unit of data processing.
  • MCU generally contains CPU, but besides the data processing unit, there are other peripheral modules, such as RAM, ROM, timer counter and various I/O interfaces. That is to say, MCU is A micro control unit that integrates the CPU and other peripheral modules.
  • the specific implementation of the present invention is to start the dual relay charging device equipped with the detection circuit designed by the present invention.
  • the first feedback circuit and the second feedback circuit form a loop.
  • a forward current flows through a diode, the light-emitting diode in the first photocoupler emits light and converts it into an electric signal to be transmitted to the first triode, and the emitter of the first triode feeds the electric signal back to the MCU; If a forward current flows through the second diode D2, the light-emitting diode in the second photocoupler U2 emits light and converts it into an electrical signal and transmits it to the second transistor Q2. The emitter of the second transistor Q2 will be electrically connected. The signal is fed back to the CPU. You can get information about the normal operation of the equipment.
  • the first feedback circuit and the second feedback circuit cannot form a loop, and the feedback circuit connected to the input terminal of the faulty relay fails to pass
  • the forward current of the diode can get the information that the equipment is not operating normally, so that the user can deal with the abnormal situation in time.

Abstract

L'invention concerne un système et un procédé de détection d'activation-désactivation d'excitation de relais de dispositif de protection de charge de véhicule à énergie nouvelle se rapportant au domaine technique de la détection de circuit, basés sur un dispositif de charge à double relais comprenant un relais à pôle L et un relais à pôle N. Un premier circuit de rétroaction est disposé entre une extrémité d'entrée du relais à pôle L et une extrémité de sortie du relais à pôle N, et un second circuit de rétroaction est disposé entre une extrémité d'entrée du relais à pôle N et une extrémité de sortie du relais à pôle L. En détectant l'activation et la désactivation des deux circuits, l'activation-désactivation d'excitation des deux relais peut être déterminée, ce qui permet d'obtenir les effets d'auto-détection de défaillances de relais du système et d'augmenter la sécurité de l'utilisateur.
PCT/CN2020/112792 2019-09-27 2020-09-01 Système et procédé de détection d'activation-désactivation d'excitation de relais de dispositif de protection de charge de véhicule à énergie nouvelle WO2021057407A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910927618.5A CN110514998A (zh) 2019-09-27 2019-09-27 新能源汽车充电保护装置继电器通断检测系统及方法
CN201910927618.5 2019-09-27

Publications (1)

Publication Number Publication Date
WO2021057407A1 true WO2021057407A1 (fr) 2021-04-01

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PCT/CN2020/112792 WO2021057407A1 (fr) 2019-09-27 2020-09-01 Système et procédé de détection d'activation-désactivation d'excitation de relais de dispositif de protection de charge de véhicule à énergie nouvelle

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CN (1) CN110514998A (fr)
WO (1) WO2021057407A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110514998A (zh) * 2019-09-27 2019-11-29 深圳市利成科技有限公司 新能源汽车充电保护装置继电器通断检测系统及方法
CN112054478A (zh) * 2020-07-30 2020-12-08 广东史麦斯电器有限公司 一种电热水器功率异常保护装置
CN113640657B (zh) * 2020-12-25 2023-06-23 施耐德万高（天津）电气设备有限公司 一种cb级自动转换开关的脱扣检测电路及方法

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CN202275129U (zh) * 2011-10-28 2012-06-13 武汉阿迪克电子有限公司 一种智能电能表继电器通断检测电路
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CN107688133A (zh) * 2017-10-26 2018-02-13 绵阳高新区探索科技有限责任公司 充电枪缆上控制盒用上电短路检测电路
CN207299557U (zh) * 2017-10-19 2018-05-01 梅先锋 基于无地线检测原理的多功能智能安全防护热水器
CN109444731A (zh) * 2018-11-08 2019-03-08 北京汇能精电科技股份有限公司 直流继电器闭合状态检测装置
CA3025545A1 (fr) * 2017-11-28 2019-05-28 Ontario Power Generation Inc. Methode et appareil de surveillance de l'etat d'un relais
CN110514998A (zh) * 2019-09-27 2019-11-29 深圳市利成科技有限公司 新能源汽车充电保护装置继电器通断检测系统及方法
CN210775763U (zh) * 2019-09-27 2020-06-16 深圳市利成科技有限公司 新能源汽车充电保护装置继电器通断检测系统

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202275129U (zh) * 2011-10-28 2012-06-13 武汉阿迪克电子有限公司 一种智能电能表继电器通断检测电路
CN206849780U (zh) * 2017-05-09 2018-01-05 浙江英洛华新能源科技有限公司 一种继电器通断检测电路及具有该电路的继电器
CN207299557U (zh) * 2017-10-19 2018-05-01 梅先锋 基于无地线检测原理的多功能智能安全防护热水器
CN107688133A (zh) * 2017-10-26 2018-02-13 绵阳高新区探索科技有限责任公司 充电枪缆上控制盒用上电短路检测电路
CA3025545A1 (fr) * 2017-11-28 2019-05-28 Ontario Power Generation Inc. Methode et appareil de surveillance de l'etat d'un relais
CN109444731A (zh) * 2018-11-08 2019-03-08 北京汇能精电科技股份有限公司 直流继电器闭合状态检测装置
CN110514998A (zh) * 2019-09-27 2019-11-29 深圳市利成科技有限公司 新能源汽车充电保护装置继电器通断检测系统及方法
CN210775763U (zh) * 2019-09-27 2020-06-16 深圳市利成科技有限公司 新能源汽车充电保护装置继电器通断检测系统

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