CN112848960A

CN112848960A - Charging system

Info

Publication number: CN112848960A
Application number: CN202110154966.0A
Authority: CN
Inventors: 周虹妤; 岑加久; 叶志伟; 吕浪; 潘鸿滨; 蔡瑜
Original assignee: Guangxi Zhongkai Technology Co ltd
Current assignee: Guangxi Zhongkai Technology Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-05-28

Abstract

The invention discloses a charging system, which belongs to the technical field of electronics and comprises a plurality of charging sockets, a control host, a server and a mobile phone, wherein the plurality of charging sockets are wirelessly connected with the control host, the control host is in wired or wireless connection with the server, and the mobile phone is in wireless connection with the server. The gateway and the electric pile form a personal area network in a wireless networking mode to carry out data communication, the charging equipment carries out uplink and downlink data transmission with a rear-end server through the network, and the charging equipment is convenient to install, low in cost and not limited by the number of landforms and sockets; the use requirements of most installation scenes can be met; the socket has the advantages of convenience in use, waterproof performance and good waterproof effect, realizes off-line charging, continuous charging in power failure, automatic stop and hardware self-checking, and has the functions of dust prevention, water prevention, insulation, fire prevention, time-limited protection, overload protection, short-circuit protection, power mutation protection, overvoltage protection and undervoltage protection.

Description

Charging system

Technical Field

The invention relates to the technical field of electronics, in particular to a charging system.

Background

Along with the high-speed development and urbanization construction of the country, the electric bicycle is rapidly popularized by virtue of the characteristics of easy operation, environmental protection, convenience and rapidness, capability of meeting the trip requirements of residents at short distances and the like, but the public charging facilities of the community are not well constructed, and the safe charging problem of the electric bicycle is increasingly highlighted due to unreasonable layout. In order to solve the problem of difficult charging, most vehicle owners often choose to bring the battery home for charging, or directly push the electric vehicle into the home and the corridor for charging, and then directly take the electric vehicle off the line for charging, so that the traditional charging mode is not only troublesome, but also has huge potential safety hazards. It is a continuous pursuit of community workers to provide convenient, comfortable and safe living environment for community residents. However, charging safety accidents occur frequently, the electric bicycle is charged safely to form a social pain point, potential safety hazards in the charging link are enabled to be like a hidden timing bomb through irregular charging operation, the public is made to suffer from the harm, and community workers are made to feel uneasy. On one hand, the charging requirements of the majority of residents are urgent, on the other hand, the community safety improvement work is continuously strengthened, and the safe, convenient and intelligent charging facilities are constructed to become an effective solution.

Most districts are transformed in recent years, build the wisdom community, accomplish electric motor car intelligent charging stake installation work. The configuration of filling electric pile provides convenience for resident electric bicycle daily charging on the one hand, and on the other hand also greatly reduced the potential safety hazard that charges that the operation of charging of irregularity leads to. Nowadays, only need to stop the car in the district that charges, plug, through sweep payment methods such as sign indicating number, the card of punching the card, insert coins and just can charge the vehicle, it is convenient to use, convenient operation. In order to meet the market demand of electric vehicle charging, the existing charging systems on the market have diversified trends, but the functions are also infinite. The traditional card swiping and coin charging system needs to carry a charging card and coins with a user when charging, which is contrary to the convenience requirement of vast residents, and the card swiping and coin charging device basically only can set fixed charging time, cannot calculate charging cost according to actual vehicle power and actual charging time, cannot automatically cut off power when an electric car is full of or abnormal charging is monitored, and cannot achieve safe charging in the true sense.

Disclosure of Invention

The invention aims to provide a charging system, which solves the technical problem that the existing charging pile cannot be automatically powered off under the conditions of troublesome wire pulling and abnormal charging.

A charging system comprises a plurality of charging sockets, a control host, a server and a mobile phone, wherein the plurality of charging sockets are in wireless connection with the control host, the control host is in wired or wireless connection with the server, and the mobile phone is in wireless connection with the server.

Further, including socket shell, row insert the front shroud, waterproof back shroud and PCB board, waterproof back shroud sets up the rear end at socket shell, the PCB board is fixed on waterproof back shroud, row inserts the front shroud and fixes the front end at socket shell, and socket shell's front end top sets up to the protruding structure, and the protruding structure sets up to the waterproof eaves board of U-shaped, and the PCB board is provided with the socket, and the PCB board is connected with outside commercial power line.

Furthermore, a sealing rubber strip is arranged at the joint of the extension socket front cover plate and the socket shell, a PCB fixing hole, an extension socket fixing hole, a rubber head inserting hole and an electric wire perforating hole are formed in the extension socket front cover plate, an external mains supply electric wire penetrates through the electric wire perforating hole to be connected with the PCB, K-704 organic silica gel sealing is arranged between the mains supply electric wire and the electric wire perforating hole, a bolt penetrates through the extension socket fixing hole to be fixed on an external object, a screw is arranged to fix the PCB on the PCB fixing hole, and the front cover plate is arranged to fix the rubber head to fix the extension socket front cover plate on the rubber head inserting hole.

Furthermore, the row-plug front cover plate is provided with jacks, the jacks are provided with silica gel pads, and the external plugs are in close contact with the silica gel pads.

Furthermore, the PCB comprises a voltage transformation circuit, an electric quantity storage circuit, a power supply circuit, a voltage transformation circuit, a controller circuit, a socket control circuit, a voltage and current sampling circuit, a zero-crossing detection circuit, a wireless communication circuit and an overcurrent detection circuit, wherein the input end of the voltage transformation circuit is connected with a mains supply, the voltage transformation circuit is connected with the power supply circuit through the electric quantity storage circuit, the power supply circuit is connected with the voltage transformation circuit, the controller circuit is connected with the socket circuit through the socket control circuit, the input ends of the voltage and current sampling circuit, the zero-crossing detection circuit and the overcurrent detection circuit are connected with the socket circuit, the output ends of the voltage and current sampling circuit, the zero-crossing detection circuit and the overcurrent detection circuit are connected with the controller circuit, and the controller circuit is.

Furthermore, the electric quantity storage circuit comprises capacitors C1-C2, a resistor R19 and a diode D14, wherein one end of the resistor R19 is connected with a power line, the other end of the resistor R19 is connected with the anode of the capacitor C1, the cathode of the capacitor C1 is connected with the anode of the capacitor C2, the cathode of the capacitor C2 is grounded, the input end of the diode D14 is connected with the anode of the capacitor C1, and the output end of the diode D14 is connected with the power line.

Further, the socket control circuit comprises a power relay RL1, resistors R29-R30, a diode D21, a triode Q1 and an inductor L52, one end of a switch wire of the power relay RL1 is connected with a mains supply, the other end of the switch wire is connected with a socket circuit, one control wire is connected with a power supply, the other control wire end is connected with a C electrode of the triode Q1 and an input end of the diode D21, an output end of the diode D21 is connected with the power supply, one end of the resistor R29 is connected with an IO port of the controller circuit, the other end of the resistor R29 is connected with a b electrode of the triode Q1 and one end of the resistor R30, an e electrode of the triode Q1 is connected with the other end of the resistor R30 and one end of the inductor L.

Furthermore, the over-current detection circuit comprises a current waveform amplifying circuit, a voltage follower circuit, an alternating current positive half-wave detection circuit and an alternating current negative half-wave detection circuit, the output end of the voltage follower circuit is connected with the current waveform amplifying circuit, the ends of the current waveform amplifying circuit are respectively connected with the alternating current positive half-wave detection circuit and the alternating current negative half-wave detection circuit, the voltage follower circuit comprises an inductor L51, a capacitor C52-C53, a resistor R83-R84, a resistor 54 and an amplifier U5D, one end of the inductor L51 is connected with a direct current power supply and one end of the capacitor C52, the other end of the inductor L51 is connected with the other direct current power supply input end, one end of the capacitor C53 and one end of the resistor R83, the capacitor C53 is connected with the other end of the capacitor C52 and grounded, the other end of the resistor R83 is connected with one end of the resistor R84 and the positive input end of, the other end of the resistor R84 is grounded, the resistor R54 is connected with the output end of the amplifier U5D and one end of the resistor R54, the current waveform amplifying circuit comprises capacitors C54-C54, resistors R54-R54, R54 and an amplifier U5 54, the capacitors C54 and C54 are respectively connected in series on two lines of alternating current input, the resistors R54 and R54 are respectively connected in series at the rear ends of the capacitors C54 and C54, the positive input end and the negative input end of the amplifier U5 54 are respectively connected with one ends of the resistors R54 and R54, one end of the resistor R54 is connected with the negative input end of the amplifier U5 54, the other end of the amplifier U5 54 is connected with the output end of the amplifier U5 54, the positive half-wave detection circuit of alternating current comprises the resistors R54-R54, the resistors R54, the capacitors C54 and the output end of the amplifier U54, one end of a resistor R82 is connected with a power supply, the other end of the resistor R82 is connected with one end of a capacitor C55, one end of a resistor R81 is connected with the positive electrode input end of an amplifier U5B, the other end of the resistor R81 is connected with the other end of a capacitor C55 and is grounded, the alternating current negative half-wave detection circuit comprises resistors R56-R58, a capacitor C54 and an amplifier U5A, the negative electrode input end of the amplifier U5A is connected with the output end of the amplifier U5C through a resistor R56, one end of a resistor R58 is connected with the power supply, the other end of the resistor R54, one end of a resistor R57 and the positive electrode input end of the amplifier U5A are connected, and the other end of the resistor R63.

Furthermore, the zero-crossing detection circuit comprises an operational amplifier U9, resistors R95-R96 and a capacitor C67, wherein the positive input end of the operational amplifier U9 is grounded, the negative input end of the operational amplifier U9 is connected with one end of a resistor R95 and one end of a resistor R96, the other end of the resistor R96 is connected with the live wire of the socket circuit, the other end of the resistor R95 is connected with the output end of the operational amplifier U9, one end of the capacitor C67 is connected with a direct-current power supply and is in power supply connection with the operational amplifier U9, and the other end of the capacitor C67 is grounded.

By adopting the technical scheme, the invention has the following technical effects:

the invention adopts a gateway-electric pile wireless networking mode to form a personal area network for data communication, the charging equipment transmits uplink and downlink data with a back-end server through the network, the installation is convenient and fast, the cost is low, and the invention is not limited by the terrain and the number of sockets; the number of the network nodes of the single electric pile can reach 1-90, the multi-network compatibility is met, and the use requirements of most installation scenes can be met; the socket has the advantages of convenience in use, waterproof performance and good waterproof effect, realizes off-line charging, continuous charging in power failure, automatic stop and hardware self-checking, and has the functions of dust prevention, water prevention, insulation, fire prevention, time-limited protection, overload protection, short-circuit protection, power mutation protection, overvoltage protection and undervoltage protection.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is a front view of the socket of the present invention.

Fig. 3 is a side view of the socket of the present invention.

Fig. 4 is a front view of the receptacle of the present invention with the front cover removed.

FIG. 5 is a circuit diagram of the PCB board of the present invention.

Fig. 6 is a schematic diagram of a power supply circuit of the present invention.

FIG. 7 is a schematic diagram of a voltage-current sampling circuit and a socket circuit according to the present invention.

Fig. 8 is a schematic diagram of the controller circuit of the present invention.

Fig. 9 is a schematic diagram of a zero crossing detection circuit of the present invention.

Fig. 10 is a schematic diagram of the control circuit of the outlet of the present invention.

FIG. 11 is a schematic diagram of an over-current detection circuit according to the present invention.

Reference numbers in the figures: 1-a socket housing; 2-a front cover plate of the extension socket; 3-a jack; 4-fixing the rubber head on the front cover plate; 5-waterproof rear cover plate; 6-PCB board fixing holes; 7-arranging and inserting fixing holes; 8-inserting the rubber head into the hole; 9-wire perforation.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments are given and the present invention is described in further detail. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

A charging system is shown in figure 1 and comprises a plurality of charging sockets, a control host, a server and a mobile phone, wherein the plurality of charging sockets are in wireless connection with the control host, the control host is in wired or wireless connection with the server, and the mobile phone is in wireless connection with the server. Each charging socket is pasted with a corresponding two-dimensional code, a user can display a small program (known in the prior art) on the WeChat after scanning the two-dimensional code by using the WeChat of the mobile phone, then clicks a corresponding socket number or does not select direct payment, the mobile phone is in wireless connection with the server, the server receives a certain socket charging instruction and payment information transmitted by the mobile phone, then the server sends a control instruction to the control host, and then the control host controls the corresponding socket to be electrified to charge the electric vehicle in a fair and wireless mode. The control host machine uses a Kaiyun intelligent host machine, the model is KY-Z100, WIFI and 4G are installed inside the control host machine, the WIFI is mainly in wireless connection with the socket, and the control host machine is installed at one end of a fence of the socket or in the middle of the fence. And 4G is used for connecting with the server.

As shown in fig. 2-4, including socket shell 1, row insert front shroud 2, waterproof back shroud 5 and PCB board, waterproof back shroud 5 sets up the rear end at socket shell 1, the PCB board is fixed on waterproof back shroud 5, row insert front shroud 2 and fix the front end at socket shell 1, and socket shell 1's front end top sets up to the protruding structure, and the protruding structure sets up to the waterproof eaves board of U-shaped, and the PCB board is provided with the socket, and the PCB board is connected with outside commercial power line. A sealing rubber strip is arranged at the joint of the row-plug front cover plate 2 and the socket shell 1, a PCB fixing hole 6, a row-plug fixing hole 7, a rubber head inserting hole 8 and an electric wire perforating hole 9 are formed in the row-plug front cover plate 2, an external mains supply electric wire penetrates through the electric wire perforating hole 9 to be connected with the PCB, K-704 organic silica gel is arranged between the mains supply electric wire and the electric wire perforating hole 9 for sealing, a bolt is arranged to penetrate through the row-plug fixing hole 7 to be fixed on an external object, a screw is arranged to fix the PCB on the PCB fixing hole 6, and a front cover plate fixing rubber head 4 is arranged to fix the row-plug front cover plate 2 on the rubber. The row-plug front cover plate 2 is provided with a jack 3, the jack 3 is provided with a silica gel pad, and an external plug is in close contact with the silica gel pad.

Sealing silica gel pads are installed in the socket holes and the socket channel, the protruding part of the shell is a U-shaped waterproof eave board, a sealing rubber strip is installed on the waterproof rear cover plate and fixed on the shell through screws, and a zero-fire line outlet below the shell is sealed by K-704 organic silica gel. When the joint that charges inserts on the socket, the socket with charge the equal in close contact with of joint, it is sealed to install the silica gel pad additional in many places, effectively strengthens waterproof performance, if meet rainy, the waterproof eaves board of U-shaped can block the rainwater, prevents that the rainwater from flowing into the socket through the jack, effectively avoids taking place the short circuit and damages the socket that charges.

In the embodiment of the invention, as shown in fig. 5, the PCB board includes a voltage transformation circuit, an electric quantity storage circuit, a power supply circuit, a voltage conversion circuit, a controller circuit, a socket control circuit, a voltage and current sampling circuit, a zero-crossing detection circuit, a wireless communication circuit and an overcurrent detection circuit, wherein an input end of the voltage transformation circuit is connected with a mains supply, the voltage transformation circuit is connected with the power supply circuit through the electric quantity storage circuit, the power supply circuit is connected with the voltage conversion circuit, the controller circuit is connected with the socket circuit through the socket control circuit, input ends of the voltage and current sampling circuit, the zero-crossing detection circuit and the overcurrent detection circuit are all connected with the socket circuit, output ends of the voltage and current sampling circuit, the zero-crossing detection circuit and the overcurrent detection circuit are all connected with the.

As shown in fig. 6-11, the electric quantity storage circuit includes capacitors C1-C2, a resistor R19 and a diode D14, wherein one end of the resistor R19 is connected to the power line, the other end of the resistor R19 is connected to the positive electrode of the capacitor C1, the negative electrode of the capacitor C1 is connected to the positive electrode of the capacitor C2, the negative electrode of the capacitor C2 is grounded, the input end of the diode D14 is connected to the positive electrode of the capacitor C1, and the output end of the diode D14 is connected to the power line.

The socket control circuit comprises a power relay RL1, resistors R29-R30, a diode D21, a triode Q1 and an inductor L52, one end of a switch wire of the power relay RL1 is connected with a mains supply, the other end of the switch wire is connected with a socket circuit, one control wire is connected with a power supply, the other control wire end is connected with a C pole of the triode Q1 and an input end of the diode D21, an output end of the diode D21 is connected with the power supply, one end of the resistor R29 is connected with an IO port of the controller circuit, the other end of the resistor R29 is connected with a b pole of the triode Q1 and one end of the resistor R30, an e pole of the triode Q1 is connected with the other end of the resistor R30 and one end of the.

The overcurrent detection circuit comprises a current waveform amplifying circuit, a voltage follower circuit, an alternating current positive half-waveform detection circuit and an alternating current negative half-waveform detection circuit, wherein the output end of the voltage follower circuit is connected with the current waveform amplifying circuit, the ends of the current waveform amplifying circuit are respectively connected with the alternating current positive half-waveform detection circuit and the alternating current negative half-waveform detection circuit, the voltage follower circuit comprises an inductor L51, capacitors C52-C53, resistors R83-R84, a resistor 54 and an amplifier U5D, one end of the inductor L51 is connected with a direct current power supply and one end of a capacitor C52, the other end of the inductor L51 is connected with the other direct current power supply input end, one end of a capacitor C53 and one end of a resistor R83, the other end of the capacitor C53 is connected with the other end of the capacitor C52 and grounded, the other end of the resistor R83 is connected with one end of a resistor R84 and the amplifier U5D positive input end, a resistor R54, a negative input end of an amplifier U5D is connected with an output end and one end of a resistor R54, the current waveform amplifying circuit comprises capacitors C50-C50, resistors R50-R50, R50 and an amplifier U5 50, the capacitors C50 and C50 are respectively connected in series with two lines of alternating current input, the resistor R50 and the resistor R50 are respectively connected in series with the rear ends of the capacitors C50 and C50, a positive input end and a negative input end of the amplifier U5 50 are respectively connected with one ends of the resistors R50 and R50, one end of the resistor R50 is connected with the negative input end of the amplifier U5 50, the other end of the resistor R50 is connected with the output end of the amplifier U5 50, the positive half-wave detection circuit of the alternating current comprises resistors R50-R50, resistor R50, capacitor C50 and the amplifier U5 50, the negative input end of the amplifier U50 is connected with the output end of the amplifier U50 through the resistor R50, the other end of the resistor R81 and the other end of the capacitor C55 are connected with the positive input end of the amplifier U5B, the other end of the resistor R81 is connected with the other end of the capacitor C55 and grounded, the alternating current negative half-wave detection circuit comprises resistors R56-R58, a capacitor C54 and an amplifier U5A, the negative input end of the amplifier U5A is connected with the output end of the amplifier U5C through a resistor R56, one end of the resistor R58 is connected with a power supply, the other end of the resistor R54, one end of the resistor R57 and the positive input end of the amplifier U5A are connected, and the other end of the resistor R57 is connected with the other end of the capacitor C54 and grounded.

The zero-crossing detection circuit comprises an operational amplifier U9, resistors R95-R96 and a capacitor C67, wherein the positive electrode input end of the operational amplifier U9 is grounded, the negative electrode input end of the operational amplifier U9 is connected with one end of a resistor R95 and one end of a resistor R96, the other end of the resistor R96 is connected with a live wire of a socket circuit, the other end of the resistor R95 is connected with the output end of the operational amplifier U9, one end of the capacitor C67 is connected with a direct-current power supply and is in power supply connection with the operational amplifier U9, and the other end of the capacitor C63.

As shown in fig. 5-11, F1 is a switching power supply input fuse to protect the switching power supply. C57 is a safety X2 capacitor, the capacitor can not generate electric shock when the capacitor fails, the personal safety is not endangered, and the capacitor is also a component of an EMI filter and used for filtering differential mode interference. L0 is a common mode inductor, which is a component of an EMI filter, and is used to filter out common mode interference. D11 is a rectifier bridge for converting alternating current into direct current; c11 is a filter capacitor, and is matched with a rectifier bridge to make the direct current more gentle; the power supply comprises a U1 power supply chip, T1A, T1B high-frequency transformers, D13 and D15 diodes, R11, R13, R14, R15, R16 and R17 resistors, and C12, C13, C15, 16 and C17 capacitors, wherein the power supply chip, the resistors, the C12, the C13, the C15, the C17 capacitors and the power supply chip form a switching power supply, and 310V high-voltage direct current is converted into 5V low-voltage direct current. The C1 and C2 high-capacity capacitors can still maintain the operation of the single chip microcomputer for several seconds when the 220V power is cut off, and store the current state and send the current state to the server. The R19 resistor is a charging resistor of C1 and C2;

the D14 diode is a C1, C2 discharge diode. The TVS1 and the TVS2 are transient suppression diodes, and suppress transient surge of a 5V power supply; the U4 power supply chip converts 5V into 3.3V; c21, C22, C34, C35, C42, C44, C45, C52, C53, C62, C63, C64, C65, C66, and C67 are filter capacitors. L31, L51, L52 and L55 are filter inductors; MOV1 is a varistor for transient voltage protection at 220V; the F2 fuse protects the 220V charging loop.

RL1 is a power relay, J2 is a charging socket, and R5 is a current sampling resistor; and the R31 resistor, the R32 resistor, the C31 capacitor and the C32 capacitor form a current sampling input circuit. And the resistors R33, R34, R35, R36 and R37 and the capacitor C33 form a voltage sampling input circuit.

The U3 is a power acquisition chip, and a R29, a R30 resistor, a Q1 triode and a D21 diode form a relay control circuit. The U9 operational amplifier, R96, R95 resistance, constitute zero crossing detection circuit, are used for judging whether 220V is normal. R50, R51, R52, R53, R55 resistors, C50 and C51 capacitors, and a U5C operational amplifier form an alternating current waveform amplifying circuit. The resistors R83, R84 and R54 and the operational amplifier U5D form a voltage follower circuit, and fixed direct-current components are added to the alternating-current waveform, so that the current sine wave waveform is complete. And the R59, the R81, the R82 resistor, the C55 capacitor and the U5B operational amplifier form a comparator, and detect whether the positive half-wave of the alternating current waveform is over-current or short-circuited. And the R56, the R57, the R58 resistor, the C54 capacitor and the U5A operational amplifier form a comparator, and detect whether the negative half-wave of the alternating current waveform is over-current or short-circuited. The U2 is a singlechip and is used for controlling the whole circuit, and R90, R91, R92 resistors, C58, C59, C60 capacitors and Y61 crystal oscillators form a minimum system operation circuit of the singlechip U2. The R97 resistor, the L53 inductor, the L54 inductor and the ANT1 antenna form a wireless radio frequency circuit, and the U8 is a flash memory chip and is used for storing relevant parameters of a system.

A user side: considering the problem of poor network in certain specific charging areas, the offline charging function can ensure that the electric vehicle can be normally charged at any time and any place. Considering that the charging process may be confused by the user in use, the charging power curve is also reflected on the charging order in real time for operation and maintenance personnel and the user to analyze and troubleshoot the problem.

A monitoring platform: the platform for operating, operating and maintaining and monitoring equipment in real time and the multi-dimensional data platform realize big data analysis, mining and application; when an alarm is generated, the system automatically sends a notice to the related responsible person, the problem is checked in time, and the fault is solved. The server is provided with a small program operation and maintenance: the system is used for rapidly installing and configuring equipment, monitoring the state of the equipment in real time, checking the distribution condition of a host and a socket of each station, testing the operation and maintenance of socket switch electricity, switching the electricity for charging users in an emergency, and connecting an alarm and sensor equipment to provide safer guarantee for charging.

Through the independently researched and developed Internet of things and AI core technology, a comprehensive solution and cloud big data service are provided for property companies, charging operation service providers and the like, and a more comprehensive and safer charging system is designed.

An operator platform: 1. a more flexible management mode is provided for an operator, and the diversified charging modes meet different operation modes of the operator. 2. Abundant data statistics panel provides the data panel for the operator, and the helping hand operator in time adjusts the operation strategy. 3. And the perfect equipment information clearly masters the circulation of the equipment from warehousing to ex-warehouse. 4. The diversified cooperation mode enables the operators to carry out income distribution and multi-role operation.

A charging device: in order to ensure the safety and reliability of the charging equipment in use, the equipment has multiple protection, the communication is faster and more stable, a local AI algorithm is supported, the automatic power off is realized, the potential safety hazard of the electric vehicle caused by long-time charging is effectively reduced, and a firewall is firmly built for fire safety.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. A charging system, characterized by: the mobile phone charging system comprises a plurality of charging sockets, a control host, a server and a mobile phone, wherein the plurality of charging sockets are in wireless connection with the control host, the control host is in wired or wireless connection with the server, and the mobile phone is in wireless connection with the server.

2. A charging system according to claim 1, characterized in that: the socket that charges includes socket shell (1), arranges and inserts front shroud (2), waterproof back shroud (5) and PCB board, waterproof back shroud (5) set up the rear end in socket shell (1), the PCB board is fixed on waterproof back shroud (5), arrange and insert front shroud (2) and fix the front end in socket shell (1), set up to protruding structure on the front end of socket shell (1), protruding structure sets up to the waterproof eaves board of U-shaped, and the PCB board is provided with the socket, and the PCB board is connected with outside commercial power line.

3. A charging system according to claim 2, characterized in that: a sealing rubber strip is arranged at the joint of the row-plug front cover plate (2) and the socket shell (1), a PCB fixing hole (6), a row-plug fixing hole (7), a rubber head inserting hole (8) and an electric wire perforating hole (9) are formed in the row-plug front cover plate (2), an external mains supply electric wire penetrates through the electric wire perforating hole (9) to be connected with the PCB, K-704 organic silica gel is arranged between the mains supply electric wire and the electric wire perforating hole (9) for sealing, a bolt is arranged to penetrate through the row-plug fixing hole (7) to be fixed on an external object, the PCB is fixed on the PCB fixing hole (6) through a screw, and a front cover plate fixing rubber head (4) is arranged to fix the row-plug front cover plate (2) on the rubber head inserting hole (.

4. A charging system according to claim 3, characterized in that: the power strip is provided with jacks (3) on the front cover plate (2), the jacks (3) are provided with silica gel pads, and the external plugs are in close contact with the silica gel pads.

5. A charging system according to claim 4, characterized in that: the PCB board includes vary voltage circuit, electric quantity storage circuit, supply circuit, voltage conversion circuit, controller circuit, socket control circuit, voltage current sampling circuit, zero cross detection circuit, wireless communication circuit and overflows the detection circuit, vary voltage circuit's input and commercial power connection, vary voltage circuit is connected with supply circuit through electric quantity storage circuit, supply circuit and voltage conversion circuit are connected, the controller circuit is connected with socket circuit through socket control circuit, voltage current sampling circuit, zero cross detection circuit and overflow the detection circuit's input all with socket circuit connection, the output all with controller circuit connection, controller circuit through wireless communication circuit and server wireless connection.

6. A charging system according to claim 5, characterized in that: the electric quantity storage circuit comprises capacitors C1-C2, a resistor R19 and a diode D14, one end of the resistor R19 is connected with a power line, the other end of the resistor R19 is connected with the anode of the capacitor C1, the cathode of the capacitor C1 is connected with the anode of the capacitor C2, the cathode of the capacitor C2 is grounded, the input end of the diode D14 is connected with the anode of the capacitor C1, and the output end of the diode D14 is connected with the power line.

7. A charging system according to claim 6, characterized in that: the socket control circuit comprises a power relay RL1, resistors R29-R30, a diode D21, a triode Q1 and an inductor L52, one end of a switch wire of the power relay RL1 is connected with a mains supply, the other end of the switch wire is connected with a socket circuit, one control wire is connected with a power supply, the other control wire end is connected with a C pole of the triode Q1 and an input end of the diode D21, an output end of the diode D21 is connected with the power supply, one end of the resistor R29 is connected with an IO port of the controller circuit, the other end of the resistor R29 is connected with a b pole of the triode Q1 and one end of the resistor R30, an e pole of the triode Q1 is connected with the other end of the resistor R30 and one end of the.

8. A charging system according to claim 7, wherein: the overcurrent detection circuit comprises a current waveform amplifying circuit, a voltage follower circuit, an alternating current positive half-waveform detection circuit and an alternating current negative half-waveform detection circuit, wherein the output end of the voltage follower circuit is connected with the current waveform amplifying circuit, the ends of the current waveform amplifying circuit are respectively connected with the alternating current positive half-waveform detection circuit and the alternating current negative half-waveform detection circuit, the voltage follower circuit comprises an inductor L51, capacitors C52-C53, resistors R83-R84, a resistor 54 and an amplifier U5D, one end of the inductor L51 is connected with a direct current power supply and one end of a capacitor C52, the other end of the inductor L51 is connected with the other direct current power supply input end, one end of a capacitor C53 and one end of a resistor R83, the other end of the capacitor C53 is connected with the other end of the capacitor C52 and grounded, the other end of the resistor R83 is connected with one end of a resistor R84 and the amplifier U5D positive input end, a resistor R54, a negative input end of an amplifier U5D is connected with an output end and one end of a resistor R54, the current waveform amplifying circuit comprises capacitors C50-C50, resistors R50-R50, R50 and an amplifier U5 50, the capacitors C50 and C50 are respectively connected in series with two lines of alternating current input, the resistor R50 and the resistor R50 are respectively connected in series with the rear ends of the capacitors C50 and C50, a positive input end and a negative input end of the amplifier U5 50 are respectively connected with one ends of the resistors R50 and R50, one end of the resistor R50 is connected with the negative input end of the amplifier U5 50, the other end of the resistor R50 is connected with the output end of the amplifier U5 50, the positive half-wave detection circuit of the alternating current comprises resistors R50-R50, resistor R50, capacitor C50 and the amplifier U5 50, the negative input end of the amplifier U50 is connected with the output end of the amplifier U50 through the resistor R50, the other end of the resistor R81 and the other end of the capacitor C55 are connected with the positive input end of the amplifier U5B, the other end of the resistor R81 is connected with the other end of the capacitor C55 and grounded, the alternating current negative half-wave detection circuit comprises resistors R56-R58, a capacitor C54 and an amplifier U5A, the negative input end of the amplifier U5A is connected with the output end of the amplifier U5C through a resistor R56, one end of the resistor R58 is connected with a power supply, the other end of the resistor R54, one end of the resistor R57 and the positive input end of the amplifier U5A are connected, and the other end of the resistor R57 is connected with the other end of the capacitor C54 and grounded.

9. A charging system according to claim 8, wherein: the zero-crossing detection circuit comprises an operational amplifier U9, resistors R95-R96 and a capacitor C67, wherein the positive electrode input end of the operational amplifier U9 is grounded, the negative electrode input end of the operational amplifier U9 is connected with one end of a resistor R95 and one end of a resistor R96, the other end of the resistor R96 is connected with a live wire of a socket circuit, the other end of the resistor R95 is connected with the output end of the operational amplifier U9, one end of the capacitor C67 is connected with a direct-current power supply and is in power supply connection with the operational amplifier U9, and the other end of the capacitor C63.