阅读说明：本技术 一种低功耗的电动车充电桩 (Electric vehicle charging pile with low power consumption ) 是由 曾超明 杨顺 杨飞飞 陈浩 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种低功耗的电动车充电桩,使用磁保持继电器代替常规继电器,磁保持继电器无需一直供电,依靠脉冲可控制其触点通断,有效的节省电能；本发明在空闲时会进入低功耗状态,低功耗状态时,能断开不必要的模块电源,主控模块进入低功耗模式,当人体接近传感器、IC卡读卡器或按键有信号,通过外部中断触发唤醒主控模块退出低功耗模式,并控制其他模块进入正常工作状态。(The invention discloses a low-power-consumption electric vehicle charging pile.A magnetic latching relay is used for replacing a conventional relay, the magnetic latching relay does not need to be supplied with power all the time, the on-off of a contact of the magnetic latching relay can be controlled by means of pulse, and electric energy is effectively saved; the invention can enter a low power consumption state when idle, can cut off unnecessary module power supply when the low power consumption state, the main control module enters a low power consumption mode, when the human body proximity sensor, the IC card reader or the key has signals, the main control module is awakened to exit the low power consumption mode through external interrupt triggering, and other modules are controlled to enter a normal working state.)

1. An electric vehicle charging pile with low power consumption comprises a charging pile body, and is characterized in that an IC card reader, a human body proximity sensor, a key and a charging port are arranged on the charging pile body, and a controller is arranged in the controller, the controller comprises a power supply module connected with commercial power, a main control module and a low-consumption control module which are respectively connected with the power supply module, a charging control module, a metering module, a storage module and a communication module which are respectively connected with the low-consumption control module, the charging control module is respectively connected with a commercial power, the metering module and the charging port, the metering module is connected with the storage module, the IC card reader, the human body proximity sensor, the key, the low consumption control module, the charging control module, the storage module and the communication module are respectively connected with the main control module, the main control module is connected with the cloud server through the communication module, and the cloud server is connected with the mobile terminal.

2. The low-power-consumption charging pile for the electric vehicle as claimed in claim 1, wherein the low-consumption control module comprises a plurality of relays, and normally open contacts of the relays are respectively connected with power input ends of the charging control module, the metering module, the storage module and the communication module and control the on-off of the circuit.

3. The low-power-consumption charging pile for the electric vehicle as claimed in claim 1, wherein the charging control module comprises a driving circuit and a magnetic latching relay, the driving circuit is connected with the main control module and the low-power-consumption control module respectively, the driving circuit is connected with the input end and the output end of the magnetic keeper, one end of a contact K2 of the magnetic latching relay is connected with a mains supply, and the other end of the contact K2 of the magnetic latching relay is connected with the charging port.

4. The low power consumption electric vehicle charging post according to claim 3, wherein the model number of the magnetic latching relay comprises HF3 FF/05-1H.

5. The low power consumption electric vehicle charging post according to claim 3, wherein the driving circuit comprises a plurality of resistors and a plurality of transistors.

6. The low-power-consumption electric vehicle charging pile according to claim 1, wherein the main control module comprises a single chip microcomputer, and the model of the single chip microcomputer comprises STM32L431C8T 6.

7. The low-power-consumption electric vehicle charging pile according to claim 1, wherein the communication module comprises a voltage regulating circuit connected with the low-consumption control module and a 4G module respectively connected with the main control module and the voltage regulating circuit.

Technical Field

The invention relates to the field of electric vehicle charging piles, in particular to an electric vehicle charging pile with low power consumption.

Background

The charging pile is widely applied to various places as charging equipment of the electric vehicle, the existing charging pile is in a power consumption state no matter in use or not in use, so that the self power consumption of the charging pile is large, unnecessary energy waste and cost waste are caused, and when the charging pile is not in use, the power consumption has no value, and is invisible resource waste. If the power supply of each idle charging pile is manually turned off and turned on when the charging pile is used, manpower is wasted, and no feasibility exists for many unattended stations.

Disclosure of Invention

The invention aims to provide a low-power-consumption electric vehicle charging pile aiming at the defects in the prior art.

In order to achieve the purpose, the invention provides a low-power-consumption electric vehicle charging pile which comprises a charging pile body, wherein an IC card reader, a human body proximity sensor, a key and a charging port are arranged on the charging pile body, a controller is arranged in the charging pile body, the controller comprises a power module connected with commercial power, a main control module and a low-consumption control module which are respectively connected with the power module, and a charging control module, a metering module, a storage module and a communication module which are respectively connected with the low-consumption control module, the charging control module is respectively connected with the commercial power, the metering module and the charging port, the metering module is connected with the storage module, the IC card reader, the human body proximity sensor, the key, the low-consumption control module, the charging control module, the storage module and the communication module are respectively connected with the main control module, and the main control module is connected with a cloud server through the communication module, the cloud server is connected with a mobile terminal.

Furthermore, the low-consumption control module comprises a plurality of relays, and normally open contacts of the relays are respectively connected with power input ends of the charging control module, the metering module, the storage module and the communication module and control the on-off of the circuit.

Further, the control module that charges includes the drive circuit who is connected respectively with host system and low consumption control module and the magnetic latching relay who is connected with drive circuit, drive circuit connects the input and the output of magnetic latching ware, magnetic latching relay's contact K2's one end and mains connection, the other end with charge mouthful and be connected.

Further, the model of the magnetic latching relay comprises HF3 FF/05-1H.

Furthermore, the driving circuit comprises a plurality of resistors and a plurality of triodes.

Further, the master control module comprises a single chip microcomputer, and the model of the single chip microcomputer comprises an STM32L431C8T 6.

Has the advantages that: the magnetic latching relay is used for replacing a conventional relay, the magnetic latching relay does not need to be supplied with power all the time, the on-off of a contact of the magnetic latching relay can be controlled by means of pulse, and electric energy is effectively saved; the invention enters a low power consumption state when in idle, the idle is defined as that a human body proximity sensor detects no human body proximity, other human-computer interaction devices have no interaction, a main control module has no control task, unnecessary module power supplies are disconnected when in the low power consumption state, for example, a communication module and a charging control module power supply are disconnected when an electric vehicle is charged, a metering module, a storage module, a charging control module and a communication module power supply are disconnected when the electric vehicle is not charged, meanwhile, the main control module enters a low power consumption mode no matter whether the charging main control module is in the idle state, when the human body proximity sensor, an IC card reader or a key has a signal, the main control module is awakened to exit the low power consumption mode through external interruption triggering, and other modules are controlled to enter a normal working state.

Drawings

Fig. 1 is a block diagram illustrating a charging pile for an electric vehicle with low power consumption according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a partial circuit of a master control module according to an embodiment of the present invention;

FIG. 3 is a circuit diagram of a communication module according to an embodiment of the present invention;

fig. 4 is a circuit diagram of a charging control module of an embodiment of the present invention.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 4, an embodiment of the present invention provides a low power consumption electric vehicle charging pile, which includes a charging pile body, an IC card reader 1, a human body proximity sensor 2, a key 3, and a charging port 11 are disposed on the charging pile body, and a controller is disposed inside the charging pile body, the controller includes a power module 4 connected to a mains supply, a main control module 5 and a low power consumption control module 6 respectively connected to the power module 4, a charging control module 7, a metering module 8, a storage module 9, and a communication module 10 respectively connected to the low power consumption control module 6, the charging control module 7 is respectively connected to the mains supply, the metering module 8, and the charging port 11, the metering module 8 is connected to the storage module 9, the IC card reader 1, the human body proximity sensor 2, the key 3, the low power consumption control module 6, the charging control module 7, the storage module 9, and the communication module 10 are respectively connected to the main control module 5, the main control module 5 is connected with a cloud server through a communication module 10, and the cloud server is connected with a mobile terminal.

The power module 4 supplies power to the main control module 5, the low-consumption control module 6, the charging control module 7, the metering module 8, the storage module 9 and the communication module 10.

The low-consumption control module 6 comprises a plurality of relays, normally open contacts of the relays are respectively connected with power input ends of the charging control module 7, the metering module 8, the storage module 9 and the communication module 10, the on-off of a circuit is controlled, and the relays can be switched on and off by conventional relays and magnetic latching relays. Specifically, the preferred quantity of relay is 3, every relay is respectively with a normally open contact, wherein, the power input end of charging control module 7 is connected to the 4 other ends of power module to a normally open contact one end, the power input end of metering module 8 and storage module 9 is connected to the 4 other ends of a normally open contact one end connection power module, the power input end of communication module 10 is connected to the 4 other ends of a normally open contact one end, with this power supply circuit who controls charging control module 7 respectively, metering module 8, storage module 9 and communication module 10.

The communication module 10 comprises a voltage regulating circuit connected with the low-consumption control module 6 and a 4G module respectively connected with the main control module 5 and the voltage regulating circuit, the 4G module preferably has a model number EC20, specifically, the voltage regulating circuit comprises a capacitor C4 and an input end of a voltage converter, the capacitor C4 and the input end of the voltage converter are respectively connected with the second power module 4, the model number of the voltage converter preferably is LM1085-ADJ, the other end of the capacitor C4 is grounded, the output end of the voltage converter is respectively connected with a resistor R1, a capacitor C1 and a capacitor C2 and outputs 3.8v voltage, the other end of a resistor R1 is respectively connected with an ADJ pin of the voltage converter and a resistor R3, the other end of the resistor R3 is grounded, the other ends of the capacitor C1 and the capacitor C2 are grounded, a pin (4G _ PWR _ EN) of the main control module 5PB0 is connected with a resistor R5, the other end of the resistor R5 is respectively connected with a base of a resistor R4 and a base of a triode Q11, and the other end of a resistor R4 is grounded, the emitting electrode of the triode Q11 is grounded, the collector electrode of the triode Q11 is respectively connected with the grid electrodes of the resistor R2 and the field-effect tube Q22, the other end of the resistor R2 and the source electrode of the field-effect tube Q22 are both connected with 3.8V voltage, and the drain electrode of the field-effect tube Q22 is connected with the 4G module. The charging instruction of the mobile terminal code scanning received by the cloud server can be transmitted to the main control module 5 through the communication module 10, and meanwhile, the payment information can be transmitted from the main control module 5 to the mobile terminal through the cloud server.

The charging control module 7 comprises a driving circuit respectively connected with the main control module 5 and the low-consumption control module 6 and a magnetic latching relay connected with the driving circuit, the preferable model of the magnetic latching relay is HF3FF/05-1H, one end of a contact K2 of the magnetic latching relay is connected with a mains supply, namely, the input of alternating current, the other end of the contact K2 of the magnetic latching relay is connected with the charging port 11 to control the output of the alternating current, so that whether the charging port 11 is electrified or not is controlled, a coil of the magnetic latching relay does not need to be powered all the time, only a forward pulse needs to be given, the contact of the magnetic latching relay can be closed to work, a reverse pulse is given, the contact of the magnetic latching relay can be opened to be powered off, and electric energy is effectively saved. Specifically, the driving circuit comprises a resistor R11 and a resistor R12 connected with a pin (CTLA) of a main control module 5PA12, the other end of the resistor R11 is connected with a base of a transistor Q3, a collector of the transistor Q3 is connected with a resistor R16, an emitter of a transistor Q3 is grounded, the other end of the resistor R16 is respectively connected with bases of a resistor R19 and a transistor Q7, the other end of the resistor R19 is connected with an emitter of a transistor Q7, the other end of the resistor R12 is respectively connected with bases of a resistor R13 and a transistor Q4, the other end of the resistor R13 and an emitter of a transistor Q4 are grounded, the driving circuit further comprises a resistor R8 connected with a pin (CTLB) of the main control module 5PA11, the other end of the resistor R8 is connected with a base of a transistor Q1, an emitter of the transistor Q1 is grounded, a collector of the transistor Q1 is respectively connected with a resistor R9, a resistor R539r 10 and a resistor R15, the other end of the resistor R9 is connected with a power supply module 4 through a low-consumption control module 6, the other end of the resistor R15 is respectively connected with the bases of a resistor R17 and a triode Q5, the emitters of the resistor R17 and the triode Q5 are all grounded, the collector of the triode Q5 and the collector of the triode Q7 are both connected with the input end (RLY _ CTLA) of the magnetic latching relay, the other end of the resistor R10 is connected with the base of the triode Q2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is connected with the resistor R14, the other end of the resistor R14 is respectively connected with the bases of a resistor R18 and a triode Q6, the other end of the resistor R18 and the emitter of the triode Q6 are both connected with the power supply module 4 through the low-consumption control module 6, the collector of the triode Q6 and the collector of the triode Q4 are both connected with the output end (RLY _ CTLB) of the magnetic latching relay, the triode Q1, the triode Q2, the triode Q3, the triode Q4 and the triode Q5 are NPN type triodes, and the triode Q6 and the triode Q7 are PNP type triodes. The main control module 5 outputs high and low levels through CTLA and CTLB to control the magnetic latching relay: in an initial state, CTLA is low level, and CTLB is high level; when the CTLA is at a high level and the CTLB is at a high level, the magnetic latching relay contact K2 is closed; when the CTLA is at a low level and the CTLB is at a low level, the magnetic latching relay contact K2 is disconnected; when CTLA is high and CTLB is low, the state is disabled. If there is the task of charging, main control module 5 need not to control always after controlling the magnetic latching relay contact closure, also need not to energize magnetic latching relay coil always simultaneously, has saved the electric power of energizing coil always to the ordinary relay that has used commonly in the past.

The metering module 8 is connected with the charging control module 7, samples and calculates power of current and voltage of the charging control module 7, data are transmitted into the storage module 9 to be stored, a common power metering chip can be selected as the calculated power, and the data in the storage module 9 can be read by the main control module 5.

The main control module 5 is preferably a single chip microcomputer, and has a model number STM32L431C8T6, as shown IN fig. 2, a complete detailed connection is not shown, the PC14-OSC32_ IN and the PC15-OSC32_ OUT are connected to an external clock circuit, the main control module 5 can enter a low power consumption mode through an instruction, the number of the low power consumption modes is three, preferably, a sleep mode or a standby mode, the IC card reader 1, the human body proximity sensor 2 and the key 3 are connected to an I port of the main control module 5, the interaction trigger is an external interrupt trigger, the external interrupt trigger can wake up the main control module 5 IN the sleep mode or the standby mode, and the external clock circuit is required IN the sleep and wake-up timing process.

The invention enters a low power consumption state in idle, the idle is defined as that the human body proximity sensor 2 detects no human body proximity, other human-computer interaction devices have no interaction (card swiping keys and the like), and the main control module 5 has no control task. For example, when there is no interaction and no control task, the human body proximity sensor 2 is idle without sensing a person 30s, and enters a low power consumption state, and turns off unnecessary module power, specifically, when there is an electric vehicle to charge, the power of the communication module 10 and the charging control module 7 is turned off, and when there is no electric vehicle to charge, the power of the metering module 8, the storage module 9, the charging control module 7 and the communication module 10 is turned off, and no matter there is no electric vehicle to charge, the main control module 5 enters a low power consumption mode when there is no electric vehicle to charge, when there is an electric vehicle to charge, the main control module 5 in the low power consumption mode is awakened to read data at regular time, when there is a signal from the human body proximity sensor 2, the IC card reader 1 or the key 3, for example, the IC card reader 1 senses a card swipe, the key 3 has a person to press, or the human body proximity sensor 2 senses a person to stay for 5s, and the main control module 5 is awakened by triggering of external interruption, the low power consumption mode is exited, and other modules are controlled to enter a normal working state.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to those of ordinary skill in the art. Without departing from the principle of the invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the scope of the invention.