CN106956605A - A kind of Protection control system of electric vehicle rapid charging machine - Google Patents
A kind of Protection control system of electric vehicle rapid charging machine Download PDFInfo
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- CN106956605A CN106956605A CN201710148538.0A CN201710148538A CN106956605A CN 106956605 A CN106956605 A CN 106956605A CN 201710148538 A CN201710148538 A CN 201710148538A CN 106956605 A CN106956605 A CN 106956605A
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- 238000005070 sampling Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000000875 corresponding effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 241001269238 Data Species 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
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- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
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- H02J7/045—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
Abstract
The present invention relates to a kind of Protection control system of electric vehicle rapid charging machine; the system is connected by the main circuit of circuit breaker Q F, AC/DC modular converter, dc bus and power switch tube drives DC/DC module compositions successively with including, and the system includes DSP main control modules and input protection module, temperature detection and the protection module, power switch pipe overcurrent protection module, voltage x current sampling module, breaker drive module, touch display module and the communication module that are connected respectively with DSP main control modules；The present invention can realize that quick charger enters line side phase shortage and the temperature protection and the quadruple defencive function of output overvoltage overcurrent protection of overcurrent protection, the overcurrent protection of device for power switching, transformer and device for power switching; and data can be uploaded to remote monitoring center, it is ensured that the safe and reliable operation of the high-power quick charger of electric automobile.
Description
Technical field
The invention belongs to automobile quick charger technical field, particularly a kind of protection control of electric vehicle rapid charging machine
System processed.
Background technology
With the development of electric automobile industry, the demand for quick charge facility is increasing, is become using power electronics
The power level of electric vehicle rapid charging machine of technology is changed generally at hundred kilowatts or so, quick charger works in frequently people
For the occasion of open and close, and its load characteristic is larger with time fluctuation, and the high-power operation of batch (-type) is for quickly filling
The stable operation of transformer and device for power switching such as commutation diode, IGBT etc. in motor proposes very big challenge, quickly
Charger main circuit reliability of operation and security are the problem of needing to consider emphatically in its design process.It is then desired to comprehensive
The multiple protective controlling mechanism for considering main circuit is closed, and quick rational troubleshooting strategy is provided.
For the protection circuit in electric vehicle rapid charging owner's circuit topology, except common input undervoltage protection,
Input outside over-voltage over-current protection, open-phase protection, short-circuit protection, output overvoltage overcurrent protection, because IGBT driver can not
Overcurrent protection is carried out, so there should be the hardware current foldback circuit of power switch pipe；In addition, in high-power occasion, work(
The temperature rise of rate switching tube and transformer is to influence the key factor of power work reliability and service behaviour, thus should be also designed with
Multi-channel temperature measurement and protection circuit.The addition of various kinds of protective circuit also can produce certain influence to the stability of system, if
, it is necessary to pay attention to the relevance between each protection circuit when counting its integrated control strategy, with ensure design protection circuit can it is reliable,
The operation of safety.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, and to propose a kind of protection control of electric vehicle rapid charging machine
System processed.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of Protection control system of electric vehicle rapid charging machine, the system is with including successively by circuit breaker Q F, AC/DC
The main circuit connection of modular converter, dc bus and power switch tube drives DC/DC module compositions, the system includes DSP master controls
Molding block and the input protection module, temperature detection and the protection module that are connected respectively with DSP main control modules, power switch pipe mistake
Flow protection module, voltage x current sampling module, breaker drive module, touch display module and communication module；
Wherein, the touch display module is connected with DSP main control modules, for showing the parameters number that DSP transmission comes
Amount；
Wherein, the communication module is connected with DSP main control module communication datas end, and communication module is used to set up the system
Data between remote monitoring platform are contacted, and realize that the data of the system are uploaded under the control instruction with remote monitoring platform
Hair；
Wherein, the breaker drive module is connected between circuit breaker Q F and the DSP main control module of main circuit, is received
The circuit breaker Q F switching signals of DSP main control modules transmission simultaneously drive circuit breaker Q F to produce corresponding action；
Wherein, the collection terminal of voltage x current sampling module AC/DC modular converters input respectively with main circuit, straight
The output end connection of bus and DC/DC modules is flowed, the data of collection include the input ac voltage and electric current of charger, direct current mother
The output voltage and electric current of line voltage and charger, the data terminal of the module are connected with DSP main control modules, and gathered data is passed
It is defeated to arrive DSP main control modules；
Wherein, the power switch pipe overcurrent protection module is connected to the power switch pipe DC/DC drives of charger main circuit
Between dynamic model block and DSP main control modules, when power switch pipe overcurrent protection module produces over-current signalWhen, power switch pipe
Overcurrent protection module delivers to charger main circuit power switch pipe DC/DC drive modules by cut-off signals are produced, and realizes quick close
The function of disconnected power switch pipe, meanwhile, power switch pipe overcurrent protection module interrupts the over current fault for sending power switch pipe
Signal is to DSP main control modules, and DSP main control modules go to overcurrent protection processing；
Wherein, the temperature detection controls circuit with protection module using the multi-route measuring temperature based on MSP430 microprocessors,
Matching has multichannel platinum thermal resistance sensor and corresponding electric signal conversion circuit, variable connector chip, LPF in the module
Circuit, in-phase amplification circuit, voltage follower, A/D conversion chips and MSP430 main process task chips；MSP430 timing microprocessors
Sample each road temperature signal value, it is compared with multi way temperature pre-set limit, if beyond limits value, MSP430 microprocessors will
Temperature fault interrupt signal is sent to DSP main control modules, DSP main control modules carry out respective interrupt, the too high event for the treatment of temperature
Barrier, disconnects the circuit breaker Q F of charger main circuit.
Moreover, the communication module is formed with the RS485 communication interfaces of standard and provides MODBUS-RTU communication protocols.
Moreover, the voltage x current sampling module is respectively by current sampling circuit and voltage sampling circuit structure, electricity is tested
Pressure and electric current are sampled after Hall voltage and current sensor isolation conversion is respectively adopted through sampling resistor, obtain light current voltage, after
Enter the ADC pins of DSP main control modules through voltage follower.
Moreover, gathered data is sent to after the output voltage and electric current of the voltage x current sampling module collection charger
DSP main control modules, are built-in with voltage and current limit value in DSP main control modules, the voltage of collection, current value with it is built-in
Limit value is compared, and produces software interrupt if beyond limit value DSP main control modules, DSP main control modules, which are gone to, provides overvoltage
Over current fault interrupt instruction, disconnects the circuit breaker Q F of charger main circuit.
Moreover, when the Protection control system operation of power switch pipe overcurrent protection module, DSP main control modules were transferred
Signal limit value is flowed, the sampled value Vin after being converted through D/A with the upper overcurrent of power switch pipe is compared, when Vin is more than excessively stream
During threshold reference voltage Vref, over-current signal will be produced
Moreover, the DSP main control modules are except progress input protection, power switch pipe overcurrent protection, temperature detection and guarantor
Outside shield, output protection, charger main circuit breaker QF is also integrated with module and is forced shutdown circuit, passes through button and hardware
Circuit reliable turn-off charger circuit breaker Q F, realizes the function of emergency shutdown protection.
Advantages and positive effects of the present invention are：
1st, the present invention proposes comprehensive electric vehicle rapid charging machine hardware protection circuit and software protection control strategy,
The failure being likely to occur in basic covering quick charger operation, and to key componentses therein such as transformer, power switch
Pipe provides reliable Preservation tactics, in addition, each protection module of the system uses modularized design, scalability is good, protection
Parameter goes for the quick charger of different model by artificially setting；
2nd, the present invention realizes the real-time display of protection system detection data and fault message, and can deliver to remote monitoring
Center, realizes the real-time online detection of electric vehicle rapid charging machine running status, error protection and automatically processes；
3rd, the present invention is found out in electric vehicle rapid charging machine by the failure data analysis to this Protection control system
The module that easily breaks down simultaneously takes corresponding Optimized Measures, improves electric automobile battery charger body design, to improve charger
Operational reliability.
Brief description of the drawings
Fig. 1 is the structural representation of electric vehicle rapid charging machine Protection control system；
Fig. 2 is current sampling circuit；
Fig. 3 is voltage sampling circuit；
Fig. 4 is produced and protection circuit for the over-current signal based on FPGA；
Fig. 5 is the multi-route measuring temperature control circuit based on MSP430.
Embodiment
The embodiment of the present invention is further described below：It is emphasized that embodiment of the present invention is explanation
Property, rather than it is limited, therefore the present invention is not limited to the embodiment described in embodiment, it is every by this area
The other embodiment that technical staff's technique according to the invention scheme is drawn, also belongs to the scope of protection of the invention.
A kind of Protection control system of electric vehicle rapid charging machine, as shown in figure 1, the system is with including successively by open circuit
The main circuit that device QF, AC/DC modular converter, dc bus, power switch tube drives DC/DC modules and batteries of electric automobile are constituted
Connection, the system includes DSP main control modules and the input protection module 1 being connected respectively with DSP main control modules, temperature detection
It is aobvious with protection module 2, power switch pipe overcurrent protection module 3, voltage x current sampling module 4, breaker drive module 5, touch
Show module 6 and communication module 7.
Wherein, the touch display module is connected with DSP main control modules, for showing the parameters number that DSP transmission comes
Amount；
In the specific implementation of the present invention, the parameters number amount that the display DSP transmission comes includes but is not limited to：Voltage electricity
Flow the input voltage and electric current, DC bus-bar voltage, output voltage and electric current, temperature detection and protection module of sampling module collection
Multi way temperature data and system time, and the touch display module also carry touch-screen input function, for protection join
Number is configured, including input side voltage x current limit value, power switch pipe cross restriction value, output voltage current limit, multichannel temperature
The temperature limit of degree detection and protection.
Wherein, the communication module is connected with DSP main control module communication datas end, and communication module is used to set up the system
Data between remote monitoring platform are contacted, and realize that the data of the system are uploaded under the control instruction with remote monitoring platform
Hair；
In the specific implementation of the present invention, the communication module is formed with RS485 communication interfaces and the offer of standard
MODBUS-RTU communication protocols.
Wherein, the breaker drive module is connected between circuit breaker Q F and the DSP main control module of main circuit, is received
The circuit breaker Q F switching signals of DSP transmissions simultaneously drive circuit breaker Q F to produce corresponding action；
Wherein, the collection terminal of voltage x current sampling module AC/DC modular converters input respectively with main circuit, straight
The output end connection of bus and DC/DC modules is flowed, the data of collection include the input ac voltage and electric current of charger, direct current mother
The output voltage and electric current of line voltage and charger, the data terminal of the module are connected with DSP main control modules, and gathered data is passed
It is defeated to arrive DSP main control modules；
In the specific implementation of the present invention, as shown in Figures 2 and 3, the voltage x current sampling module is respectively current sample
Circuit and voltage sampling circuit structure, tested voltage and current are passed through after Hall voltage and current sensor isolation conversion is respectively adopted
Sampling resistor is sampled, and obtains light current voltage, and the ADC pins of DSP main control modules are entered by voltage follower.Voltage x current is adopted
Egf block has good autgmentability, the electrical quantity that can be gathered according to needed for the increase in demand or reduction of charger.
In the specific implementation of the present invention, after the output voltage and electric current of the voltage x current sampling module collection charger
Gathered data is sent to DSP main control modules, output protection module is further provided with DSP main control modules, defeated
Go out in protection module to be provided with the limit value of voltage and current, output protection module will gather the voltage of output, current value with it is built-in
Limit value be compared, interrupted as produced dsp software if the limit value, DSP main control modules go to output overvoltage over current fault
Interrupt handling routine, disconnects charger main circuit breaker.
Wherein, the power switch pipe overcurrent protection module is connected to the power switch pipe DC/DC drives of charger main circuit
Between dynamic model block and DSP main control modules, when power switch pipe overcurrent protection module produces over-current signalWhen, based on FPGA's
Hardware protection circuit delivers to charger main circuit power switch pipe DC/DC drive modules by cut-off signals are produced, and realizes quick close
The function of disconnected power switch pipe, meanwhile, power switch pipe overcurrent protection module interrupts the over current fault for sending power switch pipe
Signal is to DSP main control modules, and DSP main control modules go to corresponding overcurrent protection processing routine, and confirmation is multiple after fixing a breakdown
Position current foldback circuit；
In the specific implementation of the present invention, over-current signal generation circuit is as shown in figure 4, power switch pipe overcurrent protection module
Protection control system operation when, DSP main control modules transfer over-current signal limit value, after being converted through D/A with power switch pipe
The sampled value Vin for flowing through electric current is compared, and when Vin is more than excessively stream threshold reference voltage Vref, will produce over-current signal
Wherein, the temperature detection controls circuit with protection module using the multi-route measuring temperature based on MSP430 microprocessors,
As shown in figure 5, matching has multichannel platinum thermal resistance sensor and corresponding electric signal conversion circuit, variable connector core in the module
Piece, low-pass filter circuit, in-phase amplification circuit, voltage follower, A/D conversion chips and MSP430 main process task chips；MSP430
Each road temperature signal value of timing sampling, it is compared with multi way temperature pre-set limit, if beyond limits value, MSP430 processors
Temperature fault interrupt signal will be sent to DSP main control modules, DSP main control modules go to respective interrupt program treatment temperature mistake
High failure, disconnects the circuit breaker Q F of charger main circuit, reset temperature is detected and protection module after wait is fixed a breakdown.
In the specific implementation of the present invention, the DSP main control modules are protected except progress input protection, power switch pipe excessively stream
Outside shield, temperature detection and protection, output protection, charger main circuit breaker is also integrated with module and is forced shutdown circuit,
The function of emergency shutdown protection can be realized artificially by button and hardware circuit reliable turn-off charger breaker.
Claims (6)
1. a kind of Protection control system of electric vehicle rapid charging machine, the system is turned by circuit breaker Q F, AC/DC successively with including
Change the mold the main circuit connection of block, dc bus and power switch tube drives DC/DC module compositions, it is characterised in that：The system bag
Include DSP main control modules and the input protection module, temperature detection and the protection module that are connected respectively with DSP main control modules, work(
Rate switching tube overcurrent protection module, voltage x current sampling module, breaker drive module, touch display module and communication module；
Wherein, the touch display module is connected with DSP main control modules, for showing the parameters number amount that DSP transmission comes；
Wherein, the communication module is connected with DSP main control module communication datas end, and communication module is used to set up the system and remote
Data contact between range monitoring platform, the data upload and the control instruction of remote monitoring platform for realizing the system is issued；
Wherein, the breaker drive module is connected between circuit breaker Q F and the DSP main control module of main circuit, receives DSP
The circuit breaker Q F switching signals of main control module transmission simultaneously drive circuit breaker Q F to produce corresponding action；
Wherein, the collection terminal of voltage x current sampling module AC/DC modular converters input respectively with main circuit, direct current are female
The output end connection of line and DC/DC modules, the data of collection include the input ac voltage and electric current of charger, dc bus electricity
The output voltage and electric current of pressure and charger, the data terminal of the module are connected with DSP main control modules, gathered data are transferred to
DSP main control modules；
Wherein, the power switch pipe overcurrent protection module is connected to the power switch pipe DC/DC driving moulds of charger main circuit
Between block and DSP main control modules, when power switch pipe overcurrent protection module produces over-current signal VT +When, power switch pipe excessively stream
Protection module will produce cut-off signals and deliver to charger main circuit power switch pipe DC/DC drive modules, and realization rapidly switches off work(
The function of rate switching tube, meanwhile, power switch pipe overcurrent protection module will send the over current fault interrupt signal of power switch pipe
To DSP main control modules, DSP main control modules go to overcurrent protection processing；
Wherein, the temperature detection controls circuit, the mould with protection module using the multi-route measuring temperature based on MSP430 microprocessors
In block matching have multichannel platinum thermal resistance sensor and corresponding electric signal conversion circuit, variable connector chip, low-pass filter circuit,
In-phase amplification circuit, voltage follower, A/D conversion chips and MSP430 main process task chips；MSP430 timing microprocessors are sampled
Each road temperature signal value, it is compared with multi way temperature pre-set limit, if beyond limits value, MSP430 microprocessors will be to
DSP main control modules send temperature fault interrupt signal, and DSP main control modules carry out respective interrupt, the too high failure for the treatment of temperature,
Disconnect the circuit breaker Q F of charger main circuit.
2. the Protection control system of electric vehicle rapid charging machine according to claim 1, it is characterised in that：The communication
Module is formed with the RS485 communication interfaces of standard and provides MODBUS-RTU communication protocols.
3. the Protection control system of electric vehicle rapid charging machine according to claim 1, it is characterised in that：The voltage
Current sample module is respectively by current sampling circuit and voltage sampling circuit structure, and Hall electricity is respectively adopted in tested voltage and current
Sampled after pressure and current sensor isolation conversion through sampling resistor, obtain light current voltage, enter DSP master controls by voltage follower
The ADC pins of molding block.
4. the Protection control system of the electric vehicle rapid charging machine according to claim 1 or 3, it is characterised in that：It is described
Gathered data is sent to DSP main control modules after the output voltage and electric current of voltage x current sampling module collection charger,
Voltage and current limit value is built-in with DSP main control modules, the voltage of collection, current value is compared with built-in limit value, such as
Software interrupt is then produced beyond limit value DSP main control modules, and DSP main control modules, which are gone to, to be provided over-voltage and over-current fault interrupting and refer to
Order, disconnects the circuit breaker Q F of charger main circuit.
5. the Protection control system of electric vehicle rapid charging machine according to claim 1, it is characterised in that：When power is opened
When closing the Protection control system operation of pipe overcurrent protection module, DSP main control modules transfer over-current signal limit value, are converted through D/A
The sampled value Vin with the upper overcurrent of power switch pipe is compared afterwards, when Vin is more than excessively stream threshold reference voltage Vref,
Over-current signal V will be producedT +。
6. the Protection control system of electric vehicle rapid charging machine according to claim 1, it is characterised in that：The DSP
Main control module is in addition to progress input protection, power switch pipe overcurrent protection, temperature detection and protection, output protection, module
In be also integrated with charger main circuit breaker QF and be forced shutdown circuit, it is disconnected by button and hardware circuit reliable turn-off charger
Road device QF, realizes the function of emergency shutdown protection.
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