CN105071513A - Vehicle-mounted charging system of electromobile - Google Patents
Vehicle-mounted charging system of electromobile Download PDFInfo
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- CN105071513A CN105071513A CN201510476568.5A CN201510476568A CN105071513A CN 105071513 A CN105071513 A CN 105071513A CN 201510476568 A CN201510476568 A CN 201510476568A CN 105071513 A CN105071513 A CN 105071513A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
Abstract
The invention provides a vehicle-mounted charging system of an electromobile. The vehicle-mounted charging system comprises a digital signal processor (DSP) chip and a DSP peripheral circuit and also comprises an input AC undervoltage detection circuit, a charging output polarity detection circuit, a battery voltage detection circuit, a charging voltage detection and fault-tolerant circuit and a charging current detection and fault-tolerant circuit, wherein safe and rapid charging voltage and current are comprehensively made according to self-detection results of all unit circuits and a detection result of an electromobile body controller module, and self-detection data and execution data are uploaded to a an ECU or a central control instrument screen in the electromobile for display through a CAN bus. By the vehicle-mounted charging system, the problems of simple functions and incapability of intelligently cooperating with an electromobile electric management module for charging in the prior art are solved, charging voltage/current is accurately judged through acquiring two-path simulation signals output from the charging voltage/current detection and fault-tolerant circuit by a DSP chip through an analog-to-digital converter (ADC), a corresponding charging method/constant current value charging is made by the DSP chip according to a result, and the battery is ensured to be prevented from being damaged due to voltage overcharging.
Description
Technical field
The present invention relates to New-energy electric vehicle charging system, be specifically related to a kind of intelligent and safe high-efficiency type charging system for electric automobile.
Background technology
Electric automobile is exactly be drive with electric power, take electric power as the vehicle of the energy.Electric automobile generally includes power accumulator, motor, electric machine controller, charger, DC transducer, the large part of instrument 6 and car body part composition.The course continuation mileage of electric automobile and depend on charger intelligence degree and Digital Control precision the useful life of battery.
At present, charging electric motor vehicles device on the market, mostly adopts open loop charging, easily causes the generation of cell damage and fire.Because vehicle belongs to sporting article, operational environment, road conditions complexity easily cause battery connection wire to loosen and wire broken skin causes the severe compromise such as loose contact and electric leakage.
And Functional Design is single, full car electric condition and charging control logic safely and fast could not be taken into full account; Also there is power density low, need configuration fan heat, the problems such as the life-span is short.
Summary of the invention
For prior art above shortcomings, the object of the present invention is to provide one to take into full account full car electric condition and charging control logic control safely and fast, there is the vehicle-mounted formula charging system of electric automobile that function is many, intelligence degree is high, the life-span is long.
Realize above-mentioned purpose, the present invention adopts following technical scheme:
The vehicle-mounted formula charging system of a kind of electric automobile, comprises dsp chip peripheral circuit, it is characterized in that, also comprise: input AC undervoltage detection circuit; Charging output polarity testing circuit; Battery voltage detection circuit; Charging voltage detects and fault tolerable circuit; Charging current detects and fault tolerable circuit; Its circuit and signal annexation are:
1) gathered the analog signal of AC input undervoltage testing circuit output by dsp chip ADC, judge whether under-voltage and overvoltage, dsp chip makes protection according to result, and by magnitude of voltage, passes on car running computer or automobile instrument screen by CAN;
2) analog signal of charging output polarity testing circuit output is gathered by dsp chip ADC, judge whether charger is connected with battery polar correct, dsp chip makes charging and protection according to result, and passes on car running computer or automobile instrument screen by result by CAN;
3) analog signal of battery voltage detection circuit output is gathered by dsp chip ADC, judge that whether battery is normal, dsp chip makes corresponding charging method and protection according to result, and result is passed to car running computer or automobile instrument screen display by CAN;
4) gather by dsp chip ADC the 2 tunnel analog signals that charging voltage detects and fault tolerable circuit exports, accurately judge charging voltage;
5) gather by dsp chip ADC the 2 tunnel analog signals that charging current detects and fault tolerable circuit exports, accurately judge charging current, dsp chip is made corresponding according to result, and constant current value charges; And result and charging current are passed to car running computer or automobile instrument screen display by CAN.
Compared to existing technology, tool of the present invention has the following advantages:
1, the invention solves prior art function simple, intelligently can not coordinate the charging of electric automobile electrical management module, there is no fault-tolerant link, particularly earth leakage protective, charging control electric current and do not coordinate electrokinetic cell and charging conductor temperature detection.
2 tunnel analog signals of charging voltage/current detecting and fault tolerable circuit output are gathered by dsp chip ADC, accurately judge charging voltage/electric current, dsp chip is made corresponding charging method, constant current value charging, constant voltage, trickle according to result and is repaired charging method, guarantees that battery can not overcharge because of voltage or overcurrent causes cell damage.
2, the present invention is according to cell voltage when not charging, automatic decision battery pack rated voltage; Reparation charging can be carried out to under-voltage lead-acid battery, battery maintenance performance, increase battery.
3, accept by CAN the charge information that BMS management system and car running computer send, and undertaken by receiving information (comprising various battery charging; Plumbic acid water battery, plumbic acid maintenance-free battery, ternary lithium battery, ferric phosphate lithium cell etc.).
4, hardware designs is integrated, parking charging protection function, safety during protection Vehicular charging.
5, the present invention is integrated with the security information detection such as earth leakage protective, leakage-current alarm, charging excess temperature, charging overcurrent, charging-cell temperature, rechargeable battery wire, guarantees charger use safety and life safety.
6, the present invention is in hardware designs up-sampling DSP data high-speed process chip, and Software for Design is integrated with manual intelligent handling procedure; Each charging, hardware is self-inspection first, and coordinates other body modules to examine mutually, after confirmation safety, just can enter charge mode.And self-inspection, mutually inspection data are passed to above onboard instruments or car running computer and shown.Be convenient to breakdown judge and debugging.
7, this charger CAN communication agreement meets national standard completely, can communicate, carry out front exchanges data of charging with GB charging pile.
Accompanying drawing explanation
Fig. 1 is electric automobile intelligent and safe high-efficiency vehicle-mounted formula charger functional-block diagram.
Fig. 2 is electric automobile intelligent and safe high-efficiency vehicle-mounted formula charger application principle block diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail.
One, as shown in Figure 1, the vehicle-mounted formula charging system of a kind of electric automobile, comprise DSP process chip, power circuit, peripheral circuit, power EMC, EMI, current rectifying and wave filtering circuit, PWM isolation drive amplifying circuit, isolated power reduction voltage circuit, rectifying and wave-filtering output circuit, complete machine working power circuit, also comprise:
1, AC undervoltage detection circuit is inputted;
2, charge output polarity testing circuit;
3, battery voltage detection circuit;
4, charging voltage detects and fault tolerable circuit;
5, charging current detects and fault tolerable circuit;
6, AC power supplies current detection circuit is inputted;
7, charger self-temperature testing circuit;
8, output lead temperature sensing circuit;
9, every batteries temperature collection circuit;
10, battery flat temperature sensing circuit;
11, detection of electrical leakage and loud shellfish alarm, power-off protecting circuit;
12, parking testing circuit;
13, CAN communication circuit;
14, digital man-machine information exchange circuit.
Its circuit connects and principle is:
1) gathered the analog signal of AC undervoltage detection circuit output by dsp chip ADC, judge whether under-voltage and overvoltage, dsp chip makes protection according to result, and is passed on car running computer or automobile instrument screen by CAN by magnitude of voltage.
2) analog signal of charging output polarity testing circuit output is gathered by dsp chip ADC; judge whether charger is connected with battery polar correct; dsp chip makes charging and protection according to result, and result is passed on car running computer or automobile instrument screen by CAN.
3) analog signal of battery voltage detection circuit output is gathered by dsp chip ADC; judge that whether battery is normal; dsp chip makes corresponding charging method and protection according to result, and result is passed to car running computer or automobile instrument screen display by CAN.
4) gather by dsp chip ADC the 2 tunnel analog signals that charging voltage detects and fault tolerable circuit exports, accurately judge charging voltage, dsp chip makes corresponding charging method according to result, guarantees that battery can not cause cell damage because voltage overcharges.Combined charge electric current and charging interval COMPREHENSIVE CALCULATING battery electric quantity and instruction of charging; And result is passed to car running computer or automobile instrument screen display by CAN.
5) gather by dsp chip ADC the 2 tunnel analog signals that charging current detects and fault tolerable circuit exports, accurately judge charging current, dsp chip is made corresponding according to result, and constant current value charges, and guarantees that battery and charging system can not, because of overcurrent, cause damaging.Combined charge pressure and charging interval COMPREHENSIVE CALCULATING battery electric quantity and charging indicate; And result and charging current are passed to car running computer or automobile instrument screen display by CAN.
6) gathered the analog signal of AC power supplies current detection circuit output by dsp chip ADC, judge that whether input current is normal, dsp chip is made corresponding power output according to result or is fallen power stage, guarantees that charger can not cause damaging because of overcurrent.And result and charging current are passed to car running computer or automobile instrument screen display by CAN.
7) gathered by dsp chip ADC, charging system self-temperature testing circuit, the analog signal of output, judges whether charger works at a normal temperature, dsp chip is made corresponding power output according to result or is fallen power stage, guarantees that charging system can not cause damaging because of excess temperature; And result and charging temperature are passed to car running computer or automobile instrument screen display by CAN.
8) analog signal of output lead temperature sensing circuit output is gathered by dsp chip ADC, judge that charging system is connected wire and whether contacts well with battery, dsp chip is made corresponding power output according to result or is fallen power stage, guarantee charger breaking out of fire when large current charge, protection battery and wire; And result and conductor temperature are passed to car running computer or automobile instrument screen display by CAN.
9) analog signal of every batteries temperature collection circuit output is gathered by dsp chip ADC, judge that whether battery temperature when charging is normal, dsp chip is made corresponding power output according to result or is fallen power stage, cell safety when guaranteeing to charge, and protection battery can not cause damaging because of excess temperature; And result and battery temperature are passed to car running computer or automobile instrument screen display by CAN.
10) gathered the analog signal of battery flat temperature sensing circuit output by dsp chip ADC, judge battery context temperature, dsp chip makes corresponding charging curve and method according to result, and prevent summer from overcharging, winter is not fully filled phenomenon; Guarantee cell safety and increase the service life.And result and battery flat temperature are passed to car running computer or automobile instrument screen display by CAN.
11) being gathered the analog signal of detection of electrical leakage and loud shellfish alarm and power-off protecting circuit output by dsp chip ADC, whether sentence charger and leak electricity, dsp chip, guarantee human life's property safety if making corresponding process according to result; And result and leakage current are passed to car running computer or automobile instrument screen display by CAN.
12) detected by dsp chip I/O port, parking detects protective circuit, and the low level signal of output, judges whether that parking is charged, and dsp chip makes corresponding process according to result, guarantees human life's property safety; And result is passed to car running computer or automobile instrument screen display by CAN.
13) connected with car load CAN network by CAN communication circuit, mutually transmitting for data and receive provides fault tolerant data to MCU, is convenient to the debugging of full car, car load electric-diagnosis.
14) digital man-machine information exchange circuit, its effect is reported to the police by charactron Circulating fibrocytes and ERR at the information of at every turn charging, be convenient to debugging and electric fault diagnosis, charger coordinates the testing result of car body controller module by above element circuit self-detection result, comprehensively make charging voltage and electric current safely and fast, and self-inspection data and execution data are uploaded to car running computer or automobile middle control instrument screen display by CAN.
Two, see Fig. 2, the application of the high-efficiency vehicle-mounted formula charger of electric automobile intelligent and safe.
The high-efficiency vehicle-mounted formula charger of electric automobile intelligent and safe is connected weak electricity measuring circuit that temperature sensor on wire connects with rechargeable battery, is connected with the temperature sensor of battery flat with the rechargeable battery on electric automobile, battery.Meet the intelligent demand of existing electric automobile, solution charger charge efficiency is low, reliability is low, to shortcomings such as electric network pollution are large, charge efficiency is high, power density is high, and use safety is stablized.
To sum up, the present invention has following characteristics:
1, have for electric automobile power battery, be full of electric ability safely, automatically, dynamic regulates charging current or voltage parameter, performs corresponding action, completes charging process.
2, the function of high-speed CAN network service is possessed, the real time data of whole group and cell before obtaining battery system parameter and charging and in charging process.At car running computer or can in detail obtain charger instantaneous operating conditions and detailed data and fault message on automobile instrument screen, be convenient to debugging and safeguard.
3, complete safety prevention measure exchanges input over-voltage protecting function; Exchange input undervoltage alarm function; Exchange input overcurrent protection function; Direct current output overcurrent defencive function; Direct current output short circuit protection function; Output soft starting function, prevents rush of current; In charging process, electrokinetic cell can be ensured and be connected the temperature of wire, charging voltage and electric current and be no more than permissible value; And there is monomer battery voltage limitation function, automatically according to the battery information dynamic conditioning charging current of BMS.
4, automatic decision charge connector, charging cable whether exact connect ion; When after charger and battery exact connect ion, charger could allow to start charging process; When charger detect with charging pile or battery malunion normal time, stop immediately charging.
5, charge interlock, ensures that charger is connected with electrokinetic cell to separate and can not start and slide with vehicle in front; High-voltage interlocking function, when there being the high voltage of harm personal safety, module locks no-output and high-decibel is reported to the police.
The above embodiment of the present invention is only for example of the present invention is described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Every belong to technical scheme of the present invention the apparent change of amplifying out or variation be still in the row of protection scope of the present invention.
Claims (4)
1. the vehicle-mounted formula charging system of electric automobile, comprises dsp chip peripheral circuit, it is characterized in that, also comprise: input AC undervoltage detection circuit; Charging output polarity testing circuit; Battery voltage detection circuit; Charging voltage detects and fault tolerable circuit; Charging current detects and fault tolerable circuit; Its circuit and signal annexation are:
1) gathered the analog signal of AC input undervoltage testing circuit output by dsp chip ADC, judge whether under-voltage and overvoltage, dsp chip makes protection according to result, passes on car running computer or automobile instrument screen by magnitude of voltage by CAN;
2) analog signal of charging output polarity testing circuit output is gathered by dsp chip ADC, judge whether charger is connected with battery polar correct, dsp chip makes charging and protection according to result, and passes on car running computer or automobile instrument screen by result by CAN;
3) analog signal of battery voltage detection circuit output is gathered by dsp chip ADC, judge that whether battery is normal, dsp chip makes corresponding charging method and protection according to result, and result is passed to car running computer or automobile instrument screen display by CAN;
4) gather by dsp chip ADC the 2 tunnel analog signals that charging voltage detects and fault tolerable circuit exports, accurately judge charging voltage;
5) gather by dsp chip ADC the 2 tunnel analog signals that charging current detects and fault tolerable circuit exports, accurately judge charging current, dsp chip is made corresponding according to result, and constant current value charges; And result and charging current are passed to car running computer or automobile instrument screen display by CAN.
2. the vehicle-mounted formula charging system of electric automobile according to claim 1, it is characterized in that, dsp chip makes following charging method according to result:
(1) if cell voltage is lower than rated voltage 10%, charger enters reparation charge mode automatically, carries out reparation charging for battery pack;
(2) charging curve that matches according to charging voltage collection value Automatic-searching and battery (according to when charging time real charging current and charging voltage ADC gather value of feedback in addition DSP programmed logic judge), guarantee that battery does not overcharge and charge less;
(3) accurate charging current value and charging voltage value (according to during charging time real charging current and charging voltage ADC gather value of feedback and determine) guarantee battery and charger safety, under any circumstance ensure that charger can not cause damaging because of overcurrent, guarantee that charging current is the optimal charge electric current of battery, improve the charge efficiency of charger, increase the useful life of battery and charger;
(4)combined charge electric current and charging interval COMPREHENSIVE CALCULATING battery electric quantity and instruction of charging, and result is passed to car running computer or automobile instrument screen display by CAN.
3. the vehicle-mounted formula charging system of electric automobile according to claim 1, is characterized in that, also comprises input AC power supplies current detection circuit; Charging system self-temperature testing circuit; Output lead temperature sensing circuit; Every batteries temperature collection circuit; Battery flat temperature sensing circuit; Its circuit and signal annexation are:
6) analog signal of AC power supplies current detection circuit output is gathered by dsp chip ADC, judge that whether input current is normal, dsp chip is made corresponding power output according to result or is fallen power stage, and result and charging current are passed to car running computer or automobile instrument screen display by CAN;
7) gathered by dsp chip ADC, charging system self-temperature testing circuit, the analog signal exported, judge whether charger works at a normal temperature, dsp chip is made corresponding power output according to result or is fallen power stage, and result and charging temperature are passed to car running computer or automobile instrument screen display by CAN;
8) analog signal of output lead temperature sensing circuit output is gathered by dsp chip ADC, judge that charger is connected wire and whether contacts well with battery, dsp chip is made corresponding power output according to result or is fallen power stage, and result and conductor temperature are passed to car running computer or automobile instrument screen display by CAN;
9) analog signal of every batteries temperature collection circuit output is gathered by dsp chip ADC, judge that whether battery temperature when charging is normal, dsp chip is made corresponding power output according to result or is fallen power stage, and result and battery temperature are passed to car running computer or automobile instrument screen display by CAN;
10) analog signal of battery flat temperature sensing circuit output is gathered by dsp chip ADC, judge battery context temperature, dsp chip makes corresponding charging curve and method according to result, and result and battery flat temperature are passed to car running computer or automobile instrument screen display by CAN.
4. the vehicle-mounted formula charging system of electric automobile according to claim 1, is characterized in that, also comprise detection of electrical leakage and loud shellfish alarm, power-off protecting circuit; Parking testing circuit; CAN communication circuit; Digital man-machine information exchange circuit; Its circuit and signal annexation are:
11) analog signal of detection of electrical leakage and loud shellfish alarm and power-off protecting circuit output is gathered by dsp chip ADC, sentence charger whether to leak electricity, dsp chip makes corresponding process according to result, and result and leakage current are passed to car running computer or automobile instrument screen display by CAN;
12) detected by dsp chip I/O port, parking detects protective circuit, and the low level signal of output, judges whether that parking is charged, and dsp chip makes corresponding process according to result; And result is passed to car running computer or automobile instrument screen display by CAN;
13) connected with car load CAN network by CAN communication circuit, mutually transmitting for data and receive provides fault tolerant data to MCU;
14) digital man-machine information exchange circuit, is reported to the police the information of charging at every turn by charactron Circulating fibrocytes and ERR, is convenient to debugging and electric fault diagnosis;
Charger coordinates the testing result of car body controller module by above element circuit self-detection result, comprehensively make charging voltage and electric current safely and fast, and self-inspection data and execution data are uploaded to car running computer or automobile middle control instrument screen display by CAN.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510476568.5A CN105071513B (en) | 2015-08-06 | 2015-08-06 | A kind of vehicle-mounted formula charging system of electric vehicle |
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| CN201510476568.5A CN105071513B (en) | 2015-08-06 | 2015-08-06 | A kind of vehicle-mounted formula charging system of electric vehicle |
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| CN105774575A (en) * | 2016-03-04 | 2016-07-20 | 南京康尼新能源汽车零部件有限公司 | Protection method for safe charging of electric car |
| CN105904982A (en) * | 2016-04-12 | 2016-08-31 | 北京海博思创科技有限公司 | Method and device for vehicle charging security diagnosis |
| WO2017167210A1 (en) * | 2016-03-30 | 2017-10-05 | 南京德朔实业有限公司 | Charging system for automobile battery, conversion device, and charging method |
| CN107650699A (en) * | 2017-08-22 | 2018-02-02 | 安徽明瑞智能科技股份有限公司 | A kind of integral type direct-current charging post cabinet |
| CN110154830A (en) * | 2019-04-11 | 2019-08-23 | 汉腾汽车有限公司 | A kind of power battery instrument SOC display control strategy |
| CN111422098A (en) * | 2020-03-10 | 2020-07-17 | 深圳市德塔防爆电动汽车有限公司 | Safety management method and system for explosion-proof automobile battery |
| CN113131577A (en) * | 2021-04-19 | 2021-07-16 | 北京鼎汉技术集团股份有限公司 | Train charging control method and train charging control device |
| WO2021227279A1 (en) * | 2020-05-14 | 2021-11-18 | 深圳市和惠源电子科技有限公司 | Digital fast-charge circuit |
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| WO2021227279A1 (en) * | 2020-05-14 | 2021-11-18 | 深圳市和惠源电子科技有限公司 | Digital fast-charge circuit |
| CN113131577A (en) * | 2021-04-19 | 2021-07-16 | 北京鼎汉技术集团股份有限公司 | Train charging control method and train charging control device |
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| CN105071513B (en) | 2018-07-20 |
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