CN105730265A - Charging starting device for DC charging pile for electric automobile - Google Patents

Charging starting device for DC charging pile for electric automobile Download PDF

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Publication number
CN105730265A
CN105730265A CN201610039838.0A CN201610039838A CN105730265A CN 105730265 A CN105730265 A CN 105730265A CN 201610039838 A CN201610039838 A CN 201610039838A CN 105730265 A CN105730265 A CN 105730265A
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power module
electric automobile
voltage
direct
module
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CN201610039838.0A
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CN105730265B (en
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陈书生
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East Group Co Ltd
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East Group Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60Monitoring or controlling charging stations
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/12Electric charging stations
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

Abstract

The invention provides a charging starting device for a DC charging pile for an electric automobile, and relates to the technical field of charging of electric automobiles. Before the charging starting device is used for charging a battery pack of the electric automobile, firstly a difference value between an output voltage of a power supply module and a voltage of the battery pack is within a preset value d, the power supply module is used for charging the battery pack, and the condition that because the output voltage of the power supply module is unequal to the voltage of the battery pack, a large in-rush current is generated instantaneously during closing, so that a switch, the power supply module of a charger and the battery pack are damaged, is avoided; further, the effects of protecting the switch, the power supply module of the charger and the battery pack, and prolonging the service life of equipment can be achieved.

Description

A kind of charge initiation device of the direct-current charging post of electric automobile
Technical field
The present invention relates to charging electric vehicle technical field, particularly relate to the charge initiation device of the direct-current charging post of a kind of electric automobile.
Background technology
Along with the aggravation of environmental crisis, New-energy electric vehicle and supporting charging device obtain and develop widely.Direct-current charging post nominal charging voltage conventional at present is 750V, is connected to charging gun after high voltage connector.
When electric motor car charges, charging gun inserts the charging port of electric automobile, and Fig. 1 is the charging inlet schematic diagram in GBT20234.3, quotes this figure only to facilitate explanation.The charging flow of charger is when charger controls after the battery management system (BMS) of system and electric automobile completes to shake hands and configure in the market, BMS closes catalyst K5 and the K6 in electric automobile, charger controls system Guan Bi catalyst K1 and K2, and charging starts.Electric motor car is when charging, and charger provides corresponding voltage and current according to the requirement of BMS.
After catalyst K5 and K6 closes, DC+ and DC-is already connected to battery and wraps, and voltage is the voltage of battery bag.The battery bag voltage of different model electric automobile is different, even the electric automobile of same model, owing to the degree of depth of electric discharge is different, not in the same time the voltage of battery bag be also different.The more common rated output voltage of current direct-current charging post is 750V, and the battery bag voltage of electric automobile is not constant between when charging every time, when charging pile controls system Guan Bi catalyst K1 and K2, owing to the output voltage of power module of charger and the voltage of battery bag are unequal, can cause there is bigger dash current in Guan Bi moment, voltage difference is more big, and dash current is more big.Switch, charger power module and battery bag can be caused damage by bigger dash current, reduce service life of equipment.
Summary of the invention
It is an object of the invention to avoid weak point of the prior art to provide the charge initiation method charge initiation device of the direct-current charging post of a kind of electric automobile, the charge initiation method of the direct-current charging post of this electric automobile and charge initiation device can prevent from switch, charger power module and battery bag are caused damage, extension device service life.
The purpose of the present invention is achieved through the following technical solutions:
The charge initiation method of the direct-current charging post of a kind of electric automobile is provided, described direct-current charging post includes off-board charger control device and vehicle plug, it is provided with power module in off-board charger control device, electric automobile includes battery bag and for the vehicle socket with described vehicle plug grafting, it is characterized in that: described charge initiation method be the difference of the voltage of the output voltage of shilling power module and battery bag in the scope of preset value d, then to make power module be the charging of battery bag.
Described charge initiation method specifically includes:
Judge step: judge that the difference of the output voltage of power module and the voltage of battery bag is whether in the scope of preset value d, if it is, perform charge step, if it is not, then perform to adjust voltage steps;
Charge step: making power module is the charging of battery bag;
Adjust voltage steps: adjust the output voltage of power module so that described difference is in the scope of setting value d, then performs charge step.
The first switch it is connected between described power module and vehicle plug, it is connected to second switch between described battery bag and vehicle socket, described judgement step is based on the basis of second switch Guan Bi to carry out, and described charge step allows power module be the charging of battery bag particular by Guan Bi the first switch.
Described judge step before perform to judge in advance step: judge power module whether fault.
Whether fault is by detecting whether the output voltage Vdc1 of power module judges in the scope of setting value a to power module, if not in the scope of setting value a, then judges power module failure.
If the output voltage Vdc1 of described power module is in the scope of setting value a, then then judge whether the first switch bonds.
Described judge that first switchs whether the voltage Vdc2 of one end being to be connected with vehicle plug by detecting the first switch that whether bonds is not more than setting value b, if voltage Vdc2 is more than setting value b, be then judged as that the first switch bonds.
If described voltage Vdc2 is not more than setting value b, then continuous collecting pressure Vdc2 is until voltage Vdc2 is not less than setting value c, then be judged as that the battery management system of electric vehicle has controlled second switch Guan Bi, then perform described judgement step.
Described d is set to be not more than 5V.
Described a is set to rated voltage ± 1% of power module.
Described b is set to be not more than 48V, and described c is set to 200V.
Beneficial effects of the present invention:
The present invention is by before charging at the battery bag for electric automobile; the difference of the output voltage of Schilling power module and the voltage of battery bag is in the scope of preset value d; making power module again is the charging of battery bag; just can avoid because the voltage of the output voltage of power module and battery bag is unequal; and cause there is bigger dash current in Guan Bi moment; and switch, charger power module and battery bag are caused damage; and then play protection switch, charger power module and battery bag, the effect in extension device life-span.
Accompanying drawing explanation
Utilize accompanying drawing that invention is described further, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the direct-current charging interface schematic diagram in GBT20234.3.
Fig. 2 is a kind of electrical block diagram that auxiliary realizes the charge initiation method of the direct-current charging post of a kind of electric automobile of the present invention.
Fig. 3 is the flow chart of the charge initiation method of the direct-current charging post of a kind of electric automobile of the present invention.
Detailed description of the invention
The invention will be further described with the following Examples.
The charge initiation method of the direct-current charging post of a kind of electric automobile of the present embodiment, Fig. 1 show the direct-current charging interface schematic diagram in GBT20234.3.
Such as Fig. 2, the first voltage sampling circuit and the second voltage sampling circuit are set, are respectively intended to the output voltage Vdc1 of the power module of sampling charger and the terminal voltage Vdc2 of DC+ and the DC-of vehicle plug.Closed and disconnected as catalyst K1 and the K2 of the first switch is controlled system control by charger, the output voltage Vdc1 of power module is controlled system by charger and adjusts as required, particularly charger controls system, by CAN communication or other communication modes, corresponding information passes to power module control system, the output voltage Vdc1 of system fading margin module is controlled by power module, module control system is arranged in power module, is a part for power module.
As shown in Figure 3, when vehicle plug inserts the vehicle socket of electric automobile, after charger control system validation has connected, sampled value Vdc1 and Vdc2 is obtained respectively through adopting the first voltage sampling circuit 1 and the second voltage sampling circuit 2, Vdc1 is the output voltage of power module, is rated voltage when zero load, and its voltage range is set to a, the basis of rated voltage considers certain error, such as 1%.When Vdc1 is in scope a, illustrating that power module is working properly, if going beyond the scope, power module operation irregularity being described.
Charger confirm connect after and receive electric automobile battery management system send " identification message " front, owing to catalyst K5 and the K6 as second switch of electric automobile does not close, catalyst K1 and K2 in charger is also without Guan Bi, the terminal voltage of DC+ and DC-should be 0, or the induced voltage that voltage is very low.Namely Vdc2 now should lower than setting value b, if being higher than, it is likely that be the catalyst of charger or the catalyst of electric automobile has bonding phenomenon, report catalyst bonding fault.Setting value b can be set below certain value of safe voltage, such as 48V.Preferentially, calculate the difference of Vdc1 and Vdc2, if Vdc2 and Vdc1 is close, then judge it is charger catalyst K1 and K2 bonding.
The battery management system controlling system and electric vehicle at charger completes to shake hands and after configurator, battery management system can close catalyst K5 and the K6 of electric automobile, DC+ and the DC-battery being connected to electric automobile is made to wrap, what sample now by the second sample circuit 2 is the voltage of battery bag, difference according to electric automobile model and depth of discharge, the voltage of battery bag is different, general c is not less than 200V, owing to the rated output voltage of general battery charger module is 750V, if after now directly closing catalyst K1 and the K2 of charger, bigger dash current will be had.The way of the present invention is after charger control system detects Vdc2, if it find that the voltage of Vdc2 is far below the output voltage Vdc1 of power module, then regulate the output voltage Vdc1 of power module, make the output voltage Vdc1 voltage close to battery bag of power module, close catalyst K1 and the K2 of charger again, now owing to the output voltage Vdc1 of power module and the voltage of battery bag are close, it does not have dash current.Preferably, take setting value d less than or equal to 5V, the output voltage Vdc1 of power module and the difference of battery bag voltage less than 5V time, then close catalyst K1 and K2.
After catalyst K1 and K2 closes, charging starts, and charger provides corresponding voltage and current to be the charging of battery bag according to the requirement of the battery management system of electric vehicle.
Finally should be noted that; above example is only in order to illustrate technical scheme; but not limiting the scope of the invention; although having made to explain to the present invention with reference to preferred embodiment; it will be understood by those within the art that; technical scheme can be modified or equivalent replacement, without deviating from the spirit and scope of technical solution of the present invention.

Claims (11)

1. the charge initiation device of the direct-current charging post of an electric automobile, described direct-current charging post includes off-board charger control device and vehicle plug, it is provided with power module in off-board charger control device, electric automobile includes battery bag and for the vehicle socket with described vehicle plug grafting, it is characterized in that: described charge initiation device be the difference of the voltage of the output voltage for Schilling power module and battery bag in the scope of preset value d, then make power module be battery bag charging.
2. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 1, it is characterised in that: described charge initiation device specifically includes:
Judge module: be used for the difference judging the voltage of the output voltage of power module and battery bag whether in the scope of preset value d, if it is, perform charging module, if it is not, then perform to adjust voltage module;
Charging module: being used for making power module is the charging of battery bag;
Adjust voltage module: for adjusting the output voltage of power module so that described difference is in the scope of setting value d, then performs charging module.
3. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 1, it is characterized in that: between described power module and vehicle plug, be connected to the first switch, it is connected to second switch between described battery bag and vehicle socket, described judge module is based on the basis of second switch Guan Bi the judgement carried out, and described charging module allows power module be the charging of battery bag particular by Guan Bi the first switch.
4. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 2, it is characterised in that: call pre-judge module before described judge module: judge power module whether fault.
5. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 4, it is characterized in that: whether fault is by detecting whether the output voltage Vdc1 of power module judges in the scope of setting value a to power module, if not in the scope of setting value a, then judge power module failure.
6. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 5, it is characterised in that: if the output voltage Vdc1 of described power module is in the scope of setting value a, then then judge whether the first switch bonds.
7. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 6, it is characterized in that: described judge that first switchs whether the voltage Vdc2 of one end being to be connected with vehicle plug by detecting the first switch that whether bonds is not more than setting value b, if voltage Vdc2 is more than setting value b, then it is judged as the first switch bonding.
8. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 7, it is characterized in that: if described voltage Vdc2 is not more than setting value b, then continuous collecting pressure Vdc2 is until voltage Vdc2 is not less than setting value c, then it is judged as that the battery management system of electric vehicle has controlled second switch Guan Bi, then calls described judge module.
9. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 1 or 2, it is characterised in that: described d is set to be not more than 5V.
10. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 5, it is characterised in that: described a is set to rated voltage ± 1% of power module.
11. the charge initiation device of the direct-current charging post of a kind of electric automobile as claimed in claim 8, it is characterised in that: described b is set to be not more than 48V, and described c is set to 200V.
CN201610039838.0A 2016-01-21 2016-01-21 A kind of charge initiation device of the direct-current charging post of electric car Active CN105730265B (en)

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CN106505846A (en) * 2016-11-15 2017-03-15 上海玖行能源科技有限公司 A kind of soft starting circuit and soft-start method and direct-current charging post
CN107139743A (en) * 2017-04-21 2017-09-08 广州视源电子科技股份有限公司 Charger
CN107472041A (en) * 2016-10-28 2017-12-15 宝沃汽车(中国)有限公司 Charging method, device and the charging pile of vehicle
WO2018126634A1 (en) * 2017-01-05 2018-07-12 宁德时代新能源科技股份有限公司 Detection method and device of charging switch of electric vehicle
CN109510253A (en) * 2017-09-15 2019-03-22 保时捷股份公司 Protection circuit for charging unit
CN110588436A (en) * 2019-10-23 2019-12-20 清远市昭元电力科技有限公司 Charging pile control module
CN110979078A (en) * 2019-11-28 2020-04-10 芜湖雪影实业有限公司 Charging equipment plug voltage detection system and detection method thereof
CN111152682A (en) * 2019-12-24 2020-05-15 宁波三星智能电气有限公司 Control method for preventing starting current impact of charging pile
CN112711319A (en) * 2020-12-29 2021-04-27 杭州迪普科技股份有限公司 Digital power supply control method and device, electronic equipment and storage medium
CN113119765A (en) * 2021-03-09 2021-07-16 蒋燕 New energy automobile charging method and system, charging pile and storage medium
CN113452151A (en) * 2021-06-29 2021-09-28 国网北京市电力公司 Control method and control device of charging device and wireless charging device
CN113561846A (en) * 2020-04-29 2021-10-29 微宏动力系统(湖州)有限公司 Battery pack charging control method and battery pack discharging control method

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CN107472041A (en) * 2016-10-28 2017-12-15 宝沃汽车(中国)有限公司 Charging method, device and the charging pile of vehicle
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CN106505846A (en) * 2016-11-15 2017-03-15 上海玖行能源科技有限公司 A kind of soft starting circuit and soft-start method and direct-current charging post
CN108279373B (en) * 2017-01-05 2020-02-14 宁德时代新能源科技股份有限公司 Method and device for detecting charging switch of electric automobile
WO2018126634A1 (en) * 2017-01-05 2018-07-12 宁德时代新能源科技股份有限公司 Detection method and device of charging switch of electric vehicle
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CN109510253A (en) * 2017-09-15 2019-03-22 保时捷股份公司 Protection circuit for charging unit
CN110588436A (en) * 2019-10-23 2019-12-20 清远市昭元电力科技有限公司 Charging pile control module
CN110979078A (en) * 2019-11-28 2020-04-10 芜湖雪影实业有限公司 Charging equipment plug voltage detection system and detection method thereof
CN111152682A (en) * 2019-12-24 2020-05-15 宁波三星智能电气有限公司 Control method for preventing starting current impact of charging pile
CN113561846A (en) * 2020-04-29 2021-10-29 微宏动力系统(湖州)有限公司 Battery pack charging control method and battery pack discharging control method
CN112711319A (en) * 2020-12-29 2021-04-27 杭州迪普科技股份有限公司 Digital power supply control method and device, electronic equipment and storage medium
CN112711319B (en) * 2020-12-29 2024-02-27 杭州迪普科技股份有限公司 Digital power supply control method and device, electronic equipment and storage medium
CN113119765A (en) * 2021-03-09 2021-07-16 蒋燕 New energy automobile charging method and system, charging pile and storage medium
CN113452151A (en) * 2021-06-29 2021-09-28 国网北京市电力公司 Control method and control device of charging device and wireless charging device

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