CN207488816U - Direct-current charging post system with self-checking function - Google Patents
Direct-current charging post system with self-checking function Download PDFInfo
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- CN207488816U CN207488816U CN201721533432.4U CN201721533432U CN207488816U CN 207488816 U CN207488816 U CN 207488816U CN 201721533432 U CN201721533432 U CN 201721533432U CN 207488816 U CN207488816 U CN 207488816U
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Abstract
The utility model discloses a kind of direct-current charging post systems with self-checking function; including main control unit, power module, protection location and selftest module; the main control unit communicates to connect respectively with power module, protection location and selftest module; load is connected in the selftest module; the DC output end of the power module is electrically connected with auxiliary power output end by relay with the load in selftest module, the charging interface communication connection of the selftest module and charging pile.It realizes convenient for safeguarding, the advantages of so as to which user be avoided to break down when in use.
Description
Technical field
The utility model is related to DC charging fields, and in particular, to a kind of direct-current charging post system with self-checking function
System.
Background technology
Direct-current charging post is a kind of to provide direct current for the electric vehicle with Vehicular charger using special charging interface and fill
The device of electricity.Electric energy is obtained from AC network, then according to the needs of electric vehicle, the high voltage direct current suitable for electric vehicle output.
Direct-current charging post has friendly interactive capability, can realize the functions such as charge control, disbursement and sattlement.It compares
In alternating-current charging pile, direct-current charging post has the characteristics that charging rate is fast, therefore is more widely applied, and is that electric bus etc. is big
The preferred charging equipment of type vehicle.
There are problems for existing direct-current charging post.On the one hand it is charging pile quality problems, charging pile professional standard is endless
It is kind, with reference to new and old national standard difference, it is impossible to which compatible all vehicles, charging process can interrupt often, charging operations flow is complicated, charging
Means of payment underaction etc., user feel inconvenient deeply.On the other hand, safety accident takes place frequently, in the market 60% charging pile
It is not provided with " time-out error " treatment mechanism, the incomplete charging pile of communication protocol accounts for 73% etc..Therefore there are staff's
Safeguard the problem of inconvenient.
Utility model content
The purpose of this utility model is that in view of the above-mentioned problems, propose a kind of direct-current charging post system with self-checking function
System is safeguarded with realizing, the advantages of so as to which user be avoided to break down when in use.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of direct-current charging post system with self-checking function, including main control unit, power module, protection location and self-test
Module, the main control unit communicate to connect respectively with power module, protection location and selftest module, are connected in the selftest module
Load, DC output end and the auxiliary power output end of the power module pass through the load electricity in relay and selftest module
The charging interface of connection, the selftest module and charging pile communicates to connect.
Further, charging control unit is further included, the charging control unit is communicated to connect with main control unit.
Further, the main control unit is connect with power module by CAN bus, the main control unit and charging control
Unit is connected by CAN bus, and the main control unit is connect with selftest module by CAN bus, the selftest module and charging
The charging interface of stake is connected by CAN bus.
Further, the protection location, including insulation monitoring module and release module, the insulation monitoring module and master
Control unit is connected by RS485 telecommunication circuits.
Further, amplifying circuit, the amplifying circuit, including amplifier are set between the selftest module and main control unit
The in-phase input end of device U42A and transport and placing device U42B, the transport and placing device U42A are sequentially connected in series resistance R200, resistance R201, resistance
The inverting input of R202, resistance R203 and resistance R204, the transport and placing device U42A be sequentially connected in series resistance R205, resistance R206,
Resistance R207, resistance R208 and resistance R209, series resistance between the inverting input and output terminal of the transport and placing device U42A
R211, capacitance C123 is in parallel with resistance R211, the output terminal of the transport and placing device U42A and the in-phase input end of transport and placing device U42B it
Between series resistance R213, the inverting input of the transport and placing device U42B connects with output terminal.
Further, the resistance R200, resistance R201, resistance R202, resistance R203, resistance R204, resistance R205, electricity
The resistance value for hindering R206, resistance R207, resistance R208 and resistance R209 is 1M Ω, and the resistance value of the resistance R211 is 12K
The resistance value of Ω, the resistance R213 are that the capacitance of 10K Ω, the capacitance C123 are 220pF.
The technical solution of the utility model has the advantages that：
The technical solution of the utility model, by setting selftest module, at the electrical characteristic of charging pile, communication and mistake
Reason is detected automatically, consequently facilitating the timely and effective repair of staff, is convenient for safeguarding, so as to which user be avoided to make so as to reach
The purpose that used time breaks down.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Description of the drawings
Fig. 1 is the functional block diagram of the direct-current charging post system with self-checking function described in the utility model embodiment；
Fig. 2 to Figure 29 is the electronics electricity of the direct-current charging post system with self-checking function described in the utility model embodiment
Lu Tu；
Figure 30 is the work flow diagram of the direct-current charging post system with self-checking function described in the utility model embodiment.
Specific embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent
Embodiment is selected to be only used for describing and explaining the present invention, is not used to limit the utility model.
As shown in Figure 1, a kind of direct-current charging post system with self-checking function, including main control unit, power module, protection
Unit and selftest module, main control unit communicate to connect respectively with power module, protection location and selftest module, connect in selftest module
Load is connect, the DC output end of power module is electrically connected with auxiliary power output end by relay and the load in selftest module
It connects, the charging interface communication connection of selftest module and charging pile.
Wherein, charging control unit is further included, charging control unit is communicated to connect with main control unit.
Main control unit is connect with power module by CAN bus, and main control unit is connected with charging control unit by CAN bus
It connects, main control unit is connect with selftest module by CAN bus, and the charging interface of selftest module and charging pile is connected by CAN bus
It connects.
Protection location, including insulation monitoring module and module of releasing, insulation monitoring module is led to main control unit by RS485
Believe circuit connection.
Amplifying circuit is set between selftest module and main control unit, and amplifying circuit is as shown in figure 27, including transport and placing device U42A
With transport and placing device U42B, the in-phase input end of transport and placing device U42A is sequentially connected in series resistance R200, resistance R201, resistance R202, resistance
The inverting input of R203 and resistance R204, transport and placing device U42A are sequentially connected in series resistance R205, resistance R206, resistance R207, resistance
Series resistance R211 between the inverting input and output terminal of R208 and resistance R209, transport and placing device U42A, capacitance C123 and resistance
R211 is in parallel, series resistance R213 between the output terminal of transport and placing device U42A and the in-phase input end of transport and placing device U42B, transport and placing device
The inverting input of U42B is connected with output terminal.
Resistance R200, resistance R201, resistance R202, resistance R203, resistance R204, resistance R205, resistance R206, resistance
The resistance value of R207, resistance R208 and resistance R209 are 1M Ω, and the resistance value of resistance R211 is 12K Ω, the electricity of resistance R213
Resistance value is 10K Ω, and the capacitance of capacitance C123 is 220pF.
Main control unit is connected by CAN bus with charging control unit, selftest module and power module.In this CAN
In bus, main control module carries out data interaction with modules.Main control module and insulation monitoring module are carried out with RS485 buses
Connection.
Selftest module is communicated with the data interaction of main control module using CAN bus, another CAN port of selftest module with
Data line connection in charging interface.In the message self-test stage, selftest module passes through the vehicle-mounted BMS systems of this simulated-bus and stake
Body main control unit communicates.
The DC output end and auxiliary power output end of power module all by the load in relay and selftest module into
Row connection.
Main control unit has charging flow control function, power module output control function, communication function.Charging flow control
Function processed is the communication message sent according to the voltage status or vehicle of test point, to judge which rank of charging be currently in
Section, and then the executing agency in direct-current charging post is controlled to carry out safe charging to vehicle.
Power module output control is to control power module dynamic adjustment output voltage and output current by CAN bus,
With adapt to be presently in the different charging stages and different model vehicle.
Communication function includes two aspects.First is the communication with connecting between vehicle, for identifying Vehicular battery information,
And the real-time exchange charge information in charging process.Second refers to the communication between pile body and server, can be by user's
Consumption information and the state of charging report to server in time, convenient for more unified managements.
Charging control unit hardware circuit meets State Grid Corporation of China《The off-board vehicle DC charging motor of electric vehicle leads to
Use technical specification》And《The off-board vehicle AC charging machine general technology specification of electric vehicle》.And using data encrypting and deciphering etc.
Technology completes the settlement function of expense by ethernet communication module and background server jointly.
Protection location is mainly by insulating monitoring module and module composition of releasing.The effective voltage of insulation monitoring module is ranging from
DC200V~DC1000V, main control unit can be configured insulation monitoring module by RS485 buses.Insulation monitoring module
The test philosophy being combined using balanced bridge with nonequilibrium bridge avoids balanced bridge that from can not being examined in positive and negative busbar while ground connection
The problem of survey, and there is detection of negative pressure, can provide negative pressure signal for charging pile prevents reversal connection.Main control unit can pass through
RS485 interface scan round insulating monitorings module realizes data acquisition, insulating monitoring module can also be resetted by instruction,
The controls such as stopping.
Mould of releasing resistance in the block is power resistor, and main control unit acquires the state of DC control circuit contactor in real time,
So as to the control for the switch that release, the state mutual exclusion of release on off state and DC control circuit contactor.
Main control unit also sets up man-machine interaction unit, and man-machine interaction unit uses touching display screen, and color is glossy, can be real
The display of existing outdoor highlight degree environment.Charging time, voltage, electric current, electricity, card remaining sum and consumption gold are shown in charging process
Volume.And the parameters such as the number of direct-current charging post, IP address can be configured by display screen.
It also supports to swipe the card simultaneously to start the function of charging with App barcode scannings.User can operate according to actual conditions unrestricted choice
Mode.
The data of selftest module self-test are specifically divided into three major class, respectively：Electrical characteristic detects, communication check, mistake
Processing detection.
Electrical characteristic detects：
Electrical characteristic detection includes：The charging output detection of pile body, accessory power supply output detection and direct current output insulation
Whether the detection of national standard is reached.
The charging output detection of pile body is that the 8kW carried by selftest module and charging pile loads to complete.During detection,
DC output end can be switched to load end by main control unit, and is sent different voltage outputs to power module successively and instructed, and
According to output current of the load control under current voltage.In the output voltage of load end detection power module, just whether electric current
Often.If without normally exporting, can prompt operation maintenance personnel check in time power module it is whether normal or check main control unit with
Whether the communication of power module is normal.
Accessory power supply be direct-current charging post in charging process, be vehicle-mounted BMS system power supplies equipment.Therefore, auxiliary electricity
Normally whether output determines that can vehicle-mounted BMS systems work normally in source.In order to adapt to different vehicles, accessory power supply provides
Two kinds of output voltages of DC12V, DC24V.In self-test, first pass through relay and auxiliary power output end is switched into DC12V power supplys
End, whether output end voltage is normal at this time for detection.The output terminal of accessory power supply is switched to DC24V power ends again to detect again.
If there is voltage instability, the phenomenon that output voltage ripple is excessive, then alarming processing is carried out.
Direct current output Insulation monitoring is that direct current output circuit is detected using insulation monitoring module, and output voltage is vehicle
Highest in communication handshake message allows to charge the smaller value in total voltage and power supply unit rated voltage.Insulation monitoring is completed
Afterwards, insulation monitoring module from the line interruption of direct current output is opened, and put into bleed-off circuit, charging output voltage is let out
It puts.If Insulation monitoring does not reach the relevant regulations in national standard, charging pile can stop exporting, and reporting fault immediately.
Communication check：
Communication check is to be communicated using the BMS simulation systems that pile body carries with pile body, is identified from communication process and message
Two aspects are detected pile body.
Communication check is divided into two steps and carries out：1) simulating vehicles communicate with pile body, detect pile body respectively and are shaking hands, match
It puts, charges, terminate whether four-stage can identify the message that BMS simulation systems are sent, while to the message transmitted by pile body
It is detected.2) when simulating vehicles communicate with pile body, BMS simulation systems can return to error message to examine pile body whether can be just
Really identification.
When carrying out first step, BMS simulation systems can carry out the message interaction of an entire flow with pile body, and right
From sequential, content, information, whether time-out etc. is checked the message that pile body is sent out.
When carrying out second step, BMS simulation systems can manufacture the various message failures in communication, such as：Message
Missing, traffic rate mismatch, and check errors, information returns to time-out etc., to examine whether pile body can recognize that these mistakes.
Communication check is important in self-test link one, this index directly determines pile body to different model vehicle
The stability of data interaction when compatibility and charging.If it was found that information errors that pile body is sent out or the information of mistake is not known
Not, pile body can timely reporting fault.When avoiding communicating with charging vehicle, vehicle is damaged.
Error handle detects：
Error handle detection refers to break down in itself in discovery pile body or in the failure message for receiving vehicle return
When, whether pile body can control corresponding executing agency to stop charging in time.Avoid causing vehicle the damage of bigger.
The project that error handle detection includes has：1) .SOC exceeds normal range (NR).2) electric voltage exceptions.3) current anomalies.
4) battery packs excess temperature.
The SOC of simulating vehicle is to utilize stake beyond the detection of normal range (NR), electric voltage exception, current anomaly and battery pack excess temperature
The BMS simulation systems that body carries send fault message to communication bus, after pile body receives fault message, should cut off immediately straight
Flow output loop.If selftest module detects that direct current output circuit without normal cutoff, will record this mistake at this moment.And
Server is reported to by Ethernet, at the same time display screen also can display alarm information.
After self-test, the detection report of generation can be reported to server, and root by selftest module by main control module
Corresponding Self-Check Report is generated according to the number of charging pile, analyzes and consults convenient for staff.
Direct-current charging post system with self-checking function, can be compatible with the electric vehicle for following new and old national standard.This charging pile system
System integrates charge control, human-computer interaction, communication, metering and charging, and with good dust-proof, water-proof function, protection etc.
Grade reaches IP54, can be safe and reliable outdoors.
This charging pile system focuses on Stability and dependability during operation, therefore, increases selftest module.It can be to charging pile
Charging flow and electrical characteristic etc. carry out comprehensive detection.The reliability of stake itself is not only detected, but also by pile body pair
Detection object is also served as in the processing of mistake.These measures ensure that the stability and safety when user uses.
In addition to this, this charging pile system also provides multiple communication interface on communication function, externally provide CAN, with
The too multiple communication interfaces such as net, 2G/3G/4G, WIFI, with monitoring center, operation management center real-time Communication for Power, in real time monitoring charging
State, and timer-controlled self-inspection.Administrative staff is facilitated to monitor the links in pile body operational process.
The electronic circuitry of direct-current charging post system with self-checking function is as shown in Fig. 2 to Figure 29.
Direct-current charging post working-flow state is as shown in figure 30, when charging pile be in etc. state to be used, referred to as
For " original state ", operating personnel can carry out the charging to vehicle at any time in this case.When charging gun is fully inserted into vehicle
During charging socket, the S switches on charging gun are closed.Charging gun and Vehicular charging socket are fully interlocked by electronic lock so that vehicle
In can not transport condition.
For operating personnel to charging pile charge parameter with postponing, charging pile and vehicle proceed by interface initialization.Specific mistake
Cheng Wei, charging pile judge whether charging plug of charging post is fully connected with vehicle socket by the voltage value of test point 1, work as detection
When the voltage value of point is 4V, judge that interface has been fully connected.
After being fully connected with vehicle, charging pile can be powered by auxiliary power output end to vehicle-mounted BMS, and it is defeated to be closed direct current
Go out contactor, while charging pile proceeds by Insulation monitoring in itself.After the completion of detection, it will input bleed-off circuit exports charging
Voltage is released, and charging pile starts period transmission handshake message later.This stage is " establishing communication " stage.
After detecting that vehicle end-cell voltage is normal, conducting direct current current supply circuit starts to charge up.
In the charging stage, vehicle-mounted BMS sends battery charge requirement parameter to charging pile in real time, and charging pile system is according to battery
Charge requirement parameter adjusts charging voltage and charging current in real time.In addition, vehicle-mounted BMS and charging pile system are also mutually sent respectively
Status information.
When charging pile system receives " battery management system stops charging message " or reach behaviour that vehicle-mounted BMS sends out
After making the end-of-charge condition of personnel setting, charging pile system just starts period transmission " charger stops charging message ", and controls
Charger processed stops charging.
The control chip that main control unit uses is STM32F107 chip, and inside is embedded with the analog-digital converter of 3 12, often
A ADC has up to 18 external channels, can realize single or scan transformation.Using SPI flash storage chips, has electronics
The performance of erasable programmable (EEPROM) can store 4096 user informations, will not also power off loss data, while can be fast
Fast reading access evidence, is effectively prevented system power failure and loses data.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical solution recorded in foregoing embodiments or to which part technical characteristic
Carry out equivalent replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of direct-current charging post system with self-checking function, which is characterized in that including main control unit, power module, protection
Unit and selftest module, the main control unit communicate to connect respectively with power module, protection location and selftest module, the self-test
Load is connected in module, DC output end and the auxiliary power output end of the power module pass through relay and selftest module
In load electrical connection, the charging interface of the selftest module and charging pile communicates to connect.
2. the direct-current charging post system according to claim 1 with self-checking function, which is characterized in that further include charging control
Unit processed, the charging control unit are communicated to connect with main control unit.
3. the direct-current charging post system according to claim 2 with self-checking function, which is characterized in that the main control unit
It is connect with power module by CAN bus, the main control unit is connect with charging control unit by CAN bus, the master control
Unit is connect with selftest module by CAN bus, and the charging interface of the selftest module and charging pile is connected by CAN bus.
4. the direct-current charging post system with self-checking function according to claim 1,2 or 3, which is characterized in that the guarantor
Unit is protected, including insulation monitoring module and module of releasing, the insulation monitoring module passes through RS485 telecommunication circuits with main control unit
Connection.
5. the direct-current charging post system with self-checking function according to claim 1,2 or 3, which is characterized in that it is described from
Amplifying circuit is set between inspection module and main control unit, the amplifying circuit is described including transport and placing device U42A and transport and placing device U42B
The in-phase input end of transport and placing device U42A is sequentially connected in series resistance R200, resistance R201, resistance R202, resistance R203 and resistance R204,
The inverting input of the transport and placing device U42A is sequentially connected in series resistance R205, resistance R206, resistance R207, resistance R208 and resistance
R209, series resistance R211, capacitance C123 and resistance R211 be simultaneously between the inverting input and output terminal of the transport and placing device U42A
Connection, series resistance R213, the transport and placing device between the output terminal of the transport and placing device U42A and the in-phase input end of transport and placing device U42B
The inverting input of U42B is connected with output terminal.
6. the direct-current charging post system according to claim 5 with self-checking function, which is characterized in that the resistance
R200, resistance R201, resistance R202, resistance R203, resistance R204, resistance R205, resistance R206, resistance R207, resistance R208
Resistance value with resistance R209 is 1M Ω, and the resistance value of the resistance R211 is 12K Ω, and the resistance value of the resistance R213 is
The capacitance of 10K Ω, the capacitance C123 are 220pF.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721533432.4U CN207488816U (en) | 2017-11-16 | 2017-11-16 | Direct-current charging post system with self-checking function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721533432.4U CN207488816U (en) | 2017-11-16 | 2017-11-16 | Direct-current charging post system with self-checking function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884431A (en) * | 2019-03-08 | 2019-06-14 | 北京博电新力电气股份有限公司 | A kind of electric car DC charging facility detection device of building block system |
| CN110850764A (en) * | 2019-11-04 | 2020-02-28 | 南宁师范大学 | Intelligent refined management platform for marine ranching |
| CN113752887A (en) * | 2020-06-02 | 2021-12-07 | 车主邦（北京）科技有限公司 | Fault processing method and system |
-
2017
- 2017-11-16 CN CN201721533432.4U patent/CN207488816U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884431A (en) * | 2019-03-08 | 2019-06-14 | 北京博电新力电气股份有限公司 | A kind of electric car DC charging facility detection device of building block system |
| CN109884431B (en) * | 2019-03-08 | 2020-07-10 | 北京博电新力电气股份有限公司 | Cordwood system electric automobile direct current facility detection device that charges |
| CN110850764A (en) * | 2019-11-04 | 2020-02-28 | 南宁师范大学 | Intelligent refined management platform for marine ranching |
| CN113752887A (en) * | 2020-06-02 | 2021-12-07 | 车主邦（北京）科技有限公司 | Fault processing method and system |
| CN113752887B (en) * | 2020-06-02 | 2023-12-01 | 浙江安吉智电控股有限公司 | Fault processing method and system |
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