Utility model content
In order to solve the problems, such as to point out in background technique, the utility model discloses a kind of exploitation of direct-current charging post and tests
One-key operation is arranged in system, the button that is verified which can be realized system, and software development verifying is complete on environment under low pressure
At charging flow, when test, carries out the automatic test of each failure of each branch.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of exploitation of the direct-current charging post disclosed in one or more embodiments and test macro, comprising: low pressure molding
Quasi- module, analogue collection module and monitoring module;The low-voltage simulation module is connect with analogue collection module, the simulation
Amount acquisition module is connected with monitoring module;The low-voltage simulation module includes single-chip microcontroller, charging module analogue unit and BMS simulation
Unit, the charging module analogue unit and BMS analogue unit are connect with monitoring module respectively.
Further, further includes: display module, the display module are connect with low-voltage simulation module.
Further, the charging module analogue unit includes DA conversion chip, and the DA conversion chip and single-chip microcontroller connect
It connects, the single-chip microcontroller is connect by the first CAN communication interface with monitoring module;
Further,
The charging module analogue unit also prestores the failure message of charging module, and charging module analogue unit is according to survey
Examination needs that corresponding message is selected to be sent to monitoring module.
Further, the BMS analogue unit is connect with single-chip microcontroller, the single-chip microcontroller by the second CAN communication interface with
Monitoring module connection, the BMS analogue unit are used to provide the BMS data interacted with monitoring module, comprising: SOC, fill
Electric remaining time, monomer voltage and monomer temperature;
Further,
The BMS analogue unit also prestores the failure message of BMS, and BMS analogue unit needs to select corresponding according to test
Message be sent to monitoring module.
Further, the low-voltage simulation module further includes charge circuit analogue unit, the charge circuit analogue unit
Include: that several contactors are set between the bus of connection charging module analogue unit and the bus of connection charging gun, passes through control
The on-off of contactor processed forms charging module analogue unit to the conducting circuit of electric car.
Further, the low-voltage simulation module further includes charging gun connection confirmation unit, the charging gun connection confirmation
Unit includes: the two-way photoelectrical coupler connecting respectively with monitoring module, the current collection of first via photoelectrical coupler phototriode
Pole is connect with the emitter of No. second photoelectrical coupler phototriode;
Monitoring module controls the on-off of two-way photoelectrical coupler, forms four kinds of on states, comprising: first via photoelectric coupling
Device conducting, No. second photoelectrical coupler are closed;First via photoelectrical coupler is closed, No. second photoelectrical coupler conducting;Two-way light
Electric coupler is both turned on and two-way photoelectrical coupler is turned off;The connection that above-mentioned four kinds of on states respectively correspond charging gun is closed
System is successful connection, not connected, connection neutralization connection error.
Further, the low-voltage simulation module further includes arrester feedback unit, and the arrester feedback unit includes:
The on-off signal of first photoelectrical coupler, first photoelectrical coupler is sent to monitoring module;By controlling the first photoelectricity coupling
The open and-shut mode of the on-off feedback arrester of clutch.
Further, the low-voltage simulation module further includes emergency stop feedback unit, and the emergency stop feedback unit includes: second
Photoelectrical coupler realizes charging module analogue unit to conducting circuit between electric car by disconnecting the second photoelectrical coupler
It disconnects, realizes emergency stop.
Further, the analogue collection module pass through respectively series connection photo-coupler and Omron relay with
BMS analogue unit is connected with charging module analogue unit;
The analog acquisition module includes data acquisition unit, A/D converter circuit and third CAN communication bus;
Data acquisition unit acquires the BMS battery voltage data and charging module analogue unit that BMS analogue unit generates
Charging voltage, current data, and by collected data feeding A/D converter circuit converted after, pass through third CAN communication
Bus is real-time transmitted to monitoring module.
Further, the monitoring module includes at least three tunnel CAN communication interfaces, and the connection of first via CAN communication interface is filled
Electric module simulation unit, the second tunnel CAN communication interface connect BMS analogue unit, and CAN communication interface connection simulation in third road is adopted
Collect module.
The utility model the utility model has the advantages that
Different types of direct current is filled by low-voltage component by being converted to the working condition of actual DC charging pile
The charging process of electric stake is simulated, and coherent detection and experiment in relation to charging pile can be easily carried out, in laboratory
It is interior can analog charge module, the malfunction of charge circuit and BMS, the convenient monitoring module to different type charging pile
Debugging efforts.
By adjusting charge circuit, can simulate including a variety of different types such as split type charging pile, integral type charging piles
Charging pile, test is comprehensive.
By simulating to charging gun connection status, arrester state and emergency stop state, different type can be realized
The test experiments of charging pile of the charging pile under a variety of different conditions.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
This programme discloses a kind of exploitation of direct-current charging post and test macro, as shown in Figure 1, comprising: low-voltage simulation module,
Display module, analogue collection module and monitoring module;Low-voltage simulation module and analogue collection module and display module are distinguished
Connection, analogue collection module are connected with monitoring module.
Wherein, monitoring module belongs to the core cell of entire charge control, using the hardware platform of A5, has 4 road CAN
Mouthful, CAN mouthfuls of connection analog acquisition units of the first via receive the data of analogue unit acquisition;Second road CAN mouthfuls connection analog charge
Module, for issuing a series of orders such as starting charging module, starting voltage and current, shutdown;The connection simulation of CAN mouthfuls of third road
BMS completes the process of the communication protocol between electric car non-vehicle-mounted type charger battery management system;4th tunnel is spare.
Display module uses 10.4 cun of capacitance touch screen of Tuo Puwei company, is connected to low-voltage simulation by parallel interface
Module completes display contactor on off operating mode, testing progress item, test cases selection, the functions such as direct-current charging post type configuration.
Analog acquisition module realizes the charging electricity of the cell voltage of simulation BMS, analog charge module by A/D converter circuit
The task of current voltage acquisition, and the data of acquisition are real-time transmitted to monitoring module by CAN bus.
Low-voltage simulation module uses the STM32F105 hardware platform of Cortex-M3 series, low-voltage simulation module low-voltage simulation
Module is integrated with charging module analogue unit, BMS analogue unit, charging gun connection confirmation by core of STM32F105 single-chip microcontroller
Unit, charge circuit analogue unit, arrester feedback unit and emergency stop feedback unit.
STM32F105 single-chip microcontroller is connect by the first CAN communication interface with monitoring module, the letter issued according to monitoring module
Breath control charging module analogue unit generates corresponding voltage and current signal.
STM32F105 single-chip microcontroller is connect by the second CAN communication interface with monitoring module, realizes specification communication;Monitor mould
Block receives the battery voltage data that BMS analogue unit generates, and generates control charging module analogue unit according to battery voltage data
Control signal.
Charging module analogue unit includes DA conversion chip, exports charging voltage and charging current by DA conversion chip;
DA conversion chip selects TLC5620ID, as shown in Fig. 2, TLC5620ID is eight four road DA conversion chips, using the confession of single 5V
Electric mode is able to achieve the output of two-way charging voltage Yu two-way charging current.The reference voltage of chip is real by chip REF02AU
It is existing, it can precisely realize that 5V stablizes output.
The pin of 6, the 7 pins connection single-chip microcontroller of DA conversion chip TLC5620ID, when 6 pins are data line, 7 pins are
Clock line, single-chip microcontroller export the voltage and current on two buses by clock line and data line traffic control TLC5620ID;TLC5620ID
4 road DA conversion can be exported.
Charging module analogue unit is also equipped with failure manufacture function, and charging module analogue unit prestores faulty message, packet
Include: input undervoltage, high temperature, output overvoltage, output overcurrent, message be not responding to, response timeout, does not send message by specification, sends
Failure message of mistake etc..STM32F105 selects corresponding failure message to be sent to monitoring module according to test request, monitors mould
After block receives corresponding failure message, corresponding troubleshooting process can be triggered, to complete to monitoring module troubleshooting stream
The test of journey.
BMS analogue unit is used to provide the BMS data interacted with monitoring module, comprising: SOC, remaining time of charging,
Monomer voltage and monomer temperature;The optocoupler TLP785GB and Omron relay and mould that BMS analogue unit passes through series connection
Quasi- acquisition module connection, when direct-current charging post and electric car are shaken hands after identification successfully, STM32F105 can be by one end of optocoupler
Pin drags down, and realizes that the conducting of optocoupler is closed to Omron relay, analog acquisition module will detect the electricity of simulation BMS
Cell voltage, to carry out charging flow.
BMS analogue unit is also equipped with failure manufacture function, and BMS analogue unit prestores the failure message of BMS, comprising: report
Text is not responding to, response timeout, does not send message, the failure message for sending mistake etc. by specification.STM32F105 is according to test need
Corresponding failure can be triggered after monitoring module receives corresponding failure message by selecting corresponding message to be sent to monitoring module
Process flow, to complete the test to monitoring module troubleshooting process.
Charge circuit refers to charge circuit of the voltage and current exported from charging module to electric car end, charge circuit mould
Quasi-simple member is made up of the formal character control loop of matrix 18 contactors, as shown in figure 3, contactor optocoupler TLP785GB
It is realized with Omron relay.Corresponding contactor is selected to be connected, STM32F105 can be according to the conducting contact device of selection, will
One end pin of corresponding optocoupler drags down, and realizes that the conducting of optocoupler is closed to Omron relay, and it is single to form charging module simulation
Member arrives the conducting circuit of electric car.
The voltage and current of charging module output is introduced into two buses of L1L2, and the contactor of K1, K2, K3, K4 can bases
The power needed pools together the voltage and current of disparate modules;K5, K6, K13, K14 contactor closure, the voltage of L1, L2
Electric current will reach L3, L4, eventually arrive at the first charging gun, the voltage and current of K7, K8, K15, K16 contactor closure, L1, L2 will
L5, L6 are reached, the second charging gun is eventually arrived at;K9, K10, K11, K12, K17, K18 pass through the list of control top again when being closed
L1, L2 voltage and current can be arrived separately at the second charging gun of the first charging gun of L3, L4 and L5, L6 by dpdt double-pole double-throw (DPDT) contactor.
The voltage and current that charging module analogue unit comes out can be arrived by being closed different contactors through different buses
Up to charging gun cable.Different contactors is closed by selection, the single rifle that can be simulated under 60-120kW different capacity charges, is double
Rifle switching fills, rush-harvesting and rush-planting while the charging pile for the types such as filling, such as: it, can when K5, K6, K13, K14 contactor are closed other disconnections
The first charging gun list rifle charge type is reached to simulate the voltage and current of 60kW;K1, K2, K9, K10, K11, K12 contactor close
When closing other disconnections, the voltage and current that can simulate 80kW arrives separately at first, second by single-pole double-throw switch (SPDT) arrival and fills
The rush-harvesting and rush-planting of electric rifle switches charge type.
Charge circuit analogue unit has failure manufacture function, when needing to manufacture charge circuit contactor control failure,
Corresponding contactor is selected to be not turned on, charge circuit is just monitored less than voltage.
Charging gun analogue unit includes: that charging gun connection confirmation subelement, charging gun temperature subelement and electromagnetic lock are single
Member;
Charging gun connection confirmation subelement is realized by two-way photoelectrical coupler AQY212EHA, as shown in figure 4, charging gun
The wrong misconnection of confirmation linkage function, in not connected, connection, four kinds of states of successful connection, these four states are to simulate and adopt
Integrate the voltage of the acquisition of module as foundation, the partial pressure Acquisition Circuit of analog acquisition module is connected respectively to the pin 3 of optocoupler U108
Bleeder circuit is formed with the pin 4 of U107.Partial pressure Acquisition Circuit includes the resistor voltage divider circuit being connected in series and A/D converter circuit.
The pin 2 of optocoupler U107 and U108 are separately connected two pins of singlechip chip, defeated by the pin of single-chip microcontroller
Low and high level can control optocoupler U107 and disconnection be connected with U108 out.When U107 and U108 is all in off-state, connection partial pressure
Resistance is infinity, and charging gun is in state in connection;The divider resistance connected when U107 disconnection, U108 on state is 1K,
Charging gun is in not-connected status;The divider resistance connected when U107 conducting, U108 off-state is 500 ohm, at charging gun
In being successfully connected state;U107 and U108 all on state when the divider resistance that connects be about 333 ohm, charging gun is in mistake
Misconnection state.
The temperature function of charging gun connects resistance simulation by the on-off function of optocoupler AQY212EHA and realizes, works as optocoupler
When AQY212EHA is in an off state, analog acquisition unit is connected to infinitely great resistance, the temperature of analog acquisition unit acquisition
The upper limit is 160 degree, and the temperature of analog acquisition unit acquisition is 160 degree;When optocoupler AQY212EHA is in the conductive state, simulation
Acquisition unit is connected to 1156 ohm of resistance, and the temperature of analog acquisition unit acquisition is 40 degree.
Arrester feedback unit: arrester normal condition should be used for anti-lightning strike function in closed state, work as arrester
After disconnection, anti-lightning strike function can fail, and monitoring module will receive the signal that arrester is in the state disconnected, and stake is made to be in not work
Make state.The feedback function of arrester realizes that, when optocoupler, which is in, to be disconnected, feedback signal will reach monitoring mould by optocoupler
Block.
Emergency stop feedback unit: the effect of emergency stop is just to will disconnect output by scram button when the abnormal conditions that charge occur
Contactor stops charging.The function of scram button optocoupler on-off function simulated implementation.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.