CN201966633U - Charging device of electric vehicles - Google Patents

Abstract

A charging device of electric vehicles belongs to the technical field of motive power charging of electric vehicles and is characterized in that a subscriber conversation unit is communicated with an accounting management unit which is connected with a charging data analyzing unit, and the charging data analyzing unit is connected with a charger control unit. A communication unit comprises a first serial bus, a second serial bus and a third serial bus, wherein the first serial bus is a controller area network (CAN) bus used for connecting the subscriber conversation unit and the accounting management unit, the second serial bus is an Ethernet network bus used for connecting the accounting management unit and the charging data analyzing unit, and the third serial bus is a CAN bus used for connecting the charging data analyzing unit and the charger control unit. The charging device has the advantages that advantages of quick charging and normal charging are combined; and under the premise that service life of the storage batteries are guaranteed, the optimum charging curve of the storage batteries is analyzed, and further the storage batteries are charged along the optimum charging curve, thereby shortening charging time.

Description

Electric vehicle charging device

Technical field

The utility model belongs to electric powered motor charging technique field.

Background technology

Because automobile travel speed in the city is not high, often stop and go, conventional vapour, diesel vehicle energy consumption strengthen, and electric automobile then is more suitable for using in the city.Simultaneously, because the electric automobile pollution is little, zero discharge, characteristics such as environmental protection, it is popularized has fast become inexorable trend.But the auxiliary facility of current electric automobile is relative shortage also, and especially electric automobile charging station is also very rare, and the accumulator of electric car charging interval is longer, quick charge blindly, the useful life that can greatly reduce storage battery.This has directly restricted popularizing of electric automobile and development.

The batteries of electric automobile kind mainly contains at present: lead acid accumulator, nickel radical battery, sode cell, serondary lithium battery, air cell etc.The all kinds battery behavior has nothing in common with each other, and also there is difference in its individual character parameter of storage battery of one type simultaneously.

Summary of the invention

The purpose of this utility model is: a kind of electric vehicle charging device is provided, and it can realize the various power accumulators of electric automobile are carried out quick charge.

The technical solution of the utility model is: be made up of user conversation unit, charger control unit, accounting management unit, charging data analysis unit and communication unit.

The user conversation unit links to each other with the accounting management unit, and the accounting management unit links to each other with the charging data analysis unit, and the charging data analysis unit links to each other with the charger control unit;

Communication unit comprises first universal serial bus, second universal serial bus and the 3rd universal serial bus; First universal serial bus is the CAN bus, connects user conversation unit and accounting management unit.Second universal serial bus is an industry ethernet, connects accounting management unit and charging data analysis unit.The 3rd universal serial bus is the CAN bus, connects charging data analysis unit and charger control unit.

In the user conversation unit, user's Card Reader circuit is connected with the DSP control board, and the DSP control board is connected with the accounting management unit through the CAN communication interface circuit, and the DSP control board is connected with touch-screen by the touch screen circuit.

In the accounting management unit, communication management module is in charge of the transfer of data between accounting management module and CAN communication interface circuit, accounting management module and the ethernet interface circuit.

In the charging data analysis unit, communication management module is in charge of the exchanges data between charging data management module and ethernet interface circuit, charging data management module and the CAN communication interface circuit.

In the charger control unit, the DSP control board receives the optimal charge curve data that the charging data management module transmits by the CAN communication interface circuit, and becomes control signal to control rectification circuit this transformation of data.

The beneficial effects of the utility model are: the advantage of quick charge and common charging dual mode is combined, guaranteeing under the storage battery prerequisite in useful life, by analyzing storage battery optimal charge curve, and along this optimal charge curve to charge in batteries, thereby shorten the charging interval.

Description of drawings

Fig. 1 is the utility model circuit part block diagram;

Fig. 2 is the utility model DSP2812 chip circuit figure;

Fig. 3 is the utility model CAN communication interface circuit figure;

Fig. 4 is the utility model AD sample circuit figure;

Fig. 5 is the utility model MOSFET drive circuit figure;

Fig. 6 is the utility model power circuit diagram;

Fig. 7 is that the utility model three-phase bridge is controlled the phase control rectifier circuit diagram entirely.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

As shown in the figure, U is that integrated circuit, R are that resistance, C are that electric capacity, D are that diode, L are transformer coils.

The utility model is made up of user conversation unit, charger control unit, accounting management unit, charging data analysis unit and communication unit, the user conversation unit links to each other with the accounting management unit, the accounting management unit links to each other with the charging data analysis unit, and the charging data analysis unit links to each other with the charger control unit.

Communication unit comprises first universal serial bus, second universal serial bus and the 3rd universal serial bus.First universal serial bus is the CAN bus, connects user conversation unit and accounting management unit.Second universal serial bus is an industry ethernet, connects accounting management unit and charging data analysis unit.The 3rd universal serial bus is the CAN bus, connects charging data analysis unit and charger control unit.

The user conversation unit reads circuit, touch screen circuit and CAN communication interface circuit by DSP control board, subscriber card and forms.User's Card Reader circuit reads subscriber card, and subscriber identity information is passed to the DSP control board.The DSP control board is issued the accounting management unit with this information through the CAN communication interface circuit.The accounting management unit is according to subscriber identity information retrieve user information database, and user data information is returned DSP control board to the user conversation unit through the CAN communication interface circuit.The DSP control board is presented at user data information on the touch-screen by the touch screen circuit.The current account's of user remaining sum, the information such as optional type, battery types of charging have been shown on the touch-screen.The touch screen circuit is passed to the DSP control board with charging type and battery types information that the user selects.The DSP control board is passed to the accounting management unit through the CAN communication interface circuit again.After charging was finished, the DSP control board received this consumption information of user that the accounting management unit transmits, and it is presented on the touch-screen through the touch screen circuit.

The accounting management unit is made up of accounting management module, User Information Database, communication management module, CAN communication interface circuit and ethernet interface circuit.Communication management module is in charge of the transfer of data between accounting management module and CAN communication interface circuit, accounting management module and the ethernet interface circuit.The accounting management module is searched information such as user account remaining sum, battery types, and these information is passed to the user conversation unit through communication management module according to the subscriber identity information retrieve user information database that the user conversation unit transmits.Information such as the charging type selected of communication management module user that the user conversation unit is transmitted, battery types are passed to the accounting management module then.The accounting management module writes User Information Database with these information.Simultaneously, accounting management module is passed to the charging data analysis unit with the battery types information that the user selects through the ethernet interface circuit of communication management module control.After charging finished, the charging data analysis unit was passed to accounting management module through Ethernet with the letter interface circuit with the electric weight that this charging of user consumes.The accounting management module is calculated this user expense of charging in view of the above, clearing user account remaining sum, and the update user information database, and information passed to the user conversation unit through the CAN communication interface.

The charging data analysis unit is made up of charging data management module, charging database, communication management module, ethernet interface circuit and CAN communication interface circuit.Communication management module is in charge of the exchanges data between charging data management module and ethernet interface circuit, charging data management module and the CAN communication interface circuit.Communication management module is issued the charging data management module with the accounting management unit through user's storage battery information that the ethernet interface circuit transmits.The charging data management module finds corresponding optimal charge curve data according to user's storage battery information retrieval charging data database, and these data are passed to the charger control unit through the CAN communication interface circuit of communication management module control.After charging finished, communication management module was passed to the charging data management module with the charger control unit through the actual charging curve data that the CAN communication interface circuit transmits again.The actual charging curve data that the charging data management module will receive write the charging data database, and actual charging curve data analysis obtained the electric weight that charging process consumes, pass to the accounting management unit through the ethernet interface circuit of communication management module control then.When the charging data management module is idle, original optimal charge curve data and these actual charging curve data that comparative analysis is charged and stored in the data database, thereby obtain new optimal charge curve data, and with new charging data database, in order to using next time.

The charger control unit is made up of DSP control board, rectification circuit, battery detection circuit and CAN communication interface circuit.The DSP control board receives the optimal charge curve data that the charging Data Management Unit transmits by the CAN communication interface circuit, and becomes control signal to control rectification circuit this transformation of data.The DSP control board detects and writes down the information such as voltage, charging current and temperature of storage battery through battery detection circuit simultaneously.After charging finished, the DSP control board was passed to the charging data analysis module with the charging curve data that detect in the charging process and write down through the CAN communication interface circuit.

The charger control unit circuit is made up of Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7.

Fig. 2 has shown the connection of TMS320LF2812 chip.Pin 77 (X1) and pin 76 (X2) have been expanded a 30MHz crystal oscillator.

Fig. 3 has shown the CAN communication interface circuit.The pin 87 (CANTXA) of the pin 1 of CAN bus transceiver PCA82C250 and TMS320LF2812 links to each other, and the pin 89 (CANRXA) of pin 4 and TMS320LF2812 links to each other.The pin 6 of PCA82C250 and pin 7 are connected respectively on the CANL and CANH of CAN bus, realize the exchanges data on TMS320LF2812 and the CAN bus.

Fig. 4 has shown the A/D sample circuit in the battery detection circuit.Circuit adopts LM358 to constitute a voltage follower.ADCINA2 ' links to each other with Hall current sensor (not drawing among the figure) output voltage.The output voltage of Hall current sensor has reflected the size of charging current.Voltage follower ADCINA2 links to each other with the pin 172 (ADCINA2) of TMS320LF2812.Finish the A/D conversion by the A/D converter that the TMS320LF2812 chip integration becomes, thereby obtain the size of charging current.

Fig. 5 has shown the drive circuit of MOSFET.Because the drive circuit of each phase is all identical, so only drawn a phase among Fig. 5.Drive circuit is core with IR2110, and the pin 92 (PWM1) of TMS320LF2812 and pin 93 (PWM2) are connected to HIN and the LIN of IR2110 respectively after photoelectrical coupler 6n136 isolates.The output HO of IR2110 and LO are as the control signal of MOSFET.

Fig. 6 has shown the power circuit of charger control unit.TPS767D318 will import+5V voltage transition one-tenth+1.8V and+3.3V output.

Fig. 7 has shown that three-phase bridge controls the phase control rectifier circuit entirely.Three-phase voltage converts d. c. voltage signal to through 6 MOSFET rectification circuits.The control signal of MOSFET is from the output of drive circuit IR2110.

Claims (1)

1. electric vehicle charging device, it is characterized in that: the user conversation unit links to each other with the accounting management unit, and the accounting management unit links to each other with the charging data analysis unit, and the data analysis unit of charging links to each other with the charger control unit;

Communication unit comprises first universal serial bus, second universal serial bus and the 3rd universal serial bus; First universal serial bus is the CAN bus, connects user conversation unit and accounting management unit; Second universal serial bus is an industry ethernet, connects accounting management unit and charging data analysis unit; The 3rd universal serial bus is the CAN bus, connects charging data analysis unit and charger control unit;

In the user conversation unit, user's Card Reader circuit is connected with the DSP control board, and the DSP control board is connected with the accounting management unit through the CAN communication interface circuit, and the DSP control board is connected with touch-screen by the touch screen circuit;

In the accounting management unit, communication management module is in charge of the transfer of data between accounting management module and CAN communication interface circuit, accounting management module and the ethernet interface circuit;

In the charging data analysis unit, communication management module is in charge of the exchanges data between charging data management module and ethernet interface circuit, charging data management module and the CAN communication interface circuit;

In the charger control unit, the DSP control board receives the optimal charge curve data that the charging data management module transmits by the CAN communication interface circuit, and becomes control signal to control rectification circuit this transformation of data.

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