CN105172608B - Electric control circuit and control method above and below a kind of electric automobile high-voltage system - Google Patents

Electric control circuit and control method above and below a kind of electric automobile high-voltage system Download PDF

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Publication number
CN105172608B
CN105172608B CN201510481711.XA CN201510481711A CN105172608B CN 105172608 B CN105172608 B CN 105172608B CN 201510481711 A CN201510481711 A CN 201510481711A CN 105172608 B CN105172608 B CN 105172608B
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China
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bms
battery management
contactor
electric
entire car
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CN201510481711.XA
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Chinese (zh)
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CN105172608A (en
Inventor
王钦普
赵佳
韩宇飞
赵浩
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中通客车控股股份有限公司
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Priority to CN201510481711.XA priority Critical patent/CN105172608B/en
Publication of CN105172608A publication Critical patent/CN105172608A/en
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Publication of CN105172608B publication Critical patent/CN105172608B/en

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    • 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

Abstract

The invention discloses electric control circuit and control method above and below a kind of electric automobile high-voltage system, the control circuit includes entire car controller VMS, and battery management system BMS, and the battery management system BMS and entire car controller VMS is in communication with each other;The battery management system BMS is connected with power cell of vehicle;Relay, its control end is connected with entire car controller VMS, and the output end of relay is connected with power cell of vehicle;Main positive contactor, its control end is connected with battery management system BMS, and the first output end of main positive contactor is connected to power cell of vehicle, and the second output end of main positive contactor is connected to high-voltage load;The output end of the positive contactor of master also and has a precharging circuit;Main negative contactor, its control end is connected with battery management system BMS, and the first output end of main negative contactor is connected to power cell of vehicle, and the second output end of main negative contactor is connected to high-voltage load.

Description

Electric control circuit and control method above and below a kind of electric automobile high-voltage system
Technical field
The present invention relates to the field of electric control of electric automobile, and in particular to automatically controlled above and below a kind of electric automobile high-voltage system Circuit processed and control method.
Background technology
Electric automobile includes mixed power electric car and pure electric automobile, and it is different from the principal character of orthodox car It is that electric automobile has a set of high pressure driving system, including electrokinetic cell, motor, high-tension distribution box etc..Electric automobile is high There is high voltage and the jumping phenomenon of high current in the upper electric and lower electric process of pressure system, power-on and power-off order is improper to cause high pressure Contact sparking ablation, high-voltage insurance such as blow at the failure, when serious high-voltage contact can be caused to be adhered together, it is impossible to cut off broken height pressure Accident, ultimately result in high-pressure system reliability reduction, the lost of life.
The content of the invention
In order to solve the shortcoming of prior art, the present invention provide above and below a kind of electric automobile high-voltage system electric control circuit and Control method.
The present invention uses following technical scheme:
Electric control circuit above and below a kind of electric automobile high-voltage system, including entire car controller VMS, and battery management system BMS, the battery management system BMS and entire car controller VMS is in communication with each other;The battery management system BMS and vehicle power Battery is connected;
Relay, its control end is connected with entire car controller VMS, and the output end of relay is connected with power cell of vehicle;
Main positive contactor, its control end is connected with battery management system BMS, and the first output end of main positive contactor passes through one High-tension fuse is connected to power cell of vehicle, and the second output end of main positive contactor is connected to high-voltage load;The master just connects The output end of tentaculum also and has a precharging circuit;
The precharging circuit is made up of preliminary filling resistance and preliminary filling contactor, and an end of the preliminary filling resistance is connected on high-voltage fuse Position between first output end of device and main positive contactor, the first output end of another termination preliminary filling contactor of preliminary filling resistance, in advance The second output end for filling contactor is connected at the tie point of the second output end of high-voltage load and main positive contactor;
Main negative contactor, its control end is connected with battery management system BMS, and the first output end of main negative contactor is connected to Power cell of vehicle, the second output end of main negative contactor is connected to high-voltage load.
The battery management system BMS and entire car controller VMS is in communication with each other by CAN.
The battery management system BMS is communicated with entire car controller VMS using SAE J1939 agreements.
The enable port of high-voltage load is connected with entire car controller VMS control port.
The control method of electric control circuit above and below a kind of electric automobile high-voltage system, including electrification control method, its is specific Step is:
S101, ON grades of firing key for opening electric automobile;
S102, entire car controller VMS self-inspections;
S103, entire car controller VMS judge self-detection result, if abnormal, and specification breaks down, weight after fixing a breakdown New upper electricity, enters step S104 if normal;
S104, entire car controller VMS control relay adhesives, power cell of vehicle are that battery management system BMS powers;
S105, power cell of vehicle state are upper electric Power up, while battery management system BMS carries out self-inspection;
S106, battery management system BMS judge self-detection result, if abnormal, are re-powered after fixing a breakdown, if normally Then enter step S107;
S107, power cell of vehicle state are changed into standby Standby by upper electric Power up, while battery management system The main negative contactor adhesive of BMS controls;
S108, entire car controller VMS send main positive contactor adhesive to battery management system BMS and instructed;
S109, battery management system BMS receive instruction rear vehicle electrokinetic cell state and are changed into preliminary filling by standby Standby Electric Precharge, while controlling preliminary filling contactor adhesive;
S110, battery management system BMS judge whether preliminary filling succeeds, if preliminary filling is unsuccessful, power cell of vehicle state It is changed into contactor and opens Contactors opening, while the main positive contactor of battery management system BMS controls disconnects;If pre- Success is filled, then into step S111;
S111, power cell of vehicle state are changed into charging complete Ready, and dynamic to entire car controller VMS broadcasting vans Power battery status is changed into this signal of charging complete Ready, while the main positive contactor adhesive of battery management system BMS controls;
S112, entire car controller VMS control high-voltage load enable upper electricity, it is allowed to which high-voltage load works, and power up terminates.
The control method of electric control circuit above and below a kind of electric automobile high-voltage system, in addition to lower electric control method, it has Body step is:
S201, ON grades of firing key for closing electric automobile;
S202, entire car controller VMS control high-voltage load enable lower electricity;
S203, entire car controller VMS send main positive contactor open command to battery management system BMS;
S204, battery management system BMS detect present battery current status;
S205, battery management system BMS judge whether present battery electric current is 0, if 0 enters step S206, if not For 0, then return to step S204;Battery management system BMS this state residence time no more than the first preset time, if super The first preset time is crossed, then is forced into step S206;
S206, power cell of vehicle state are changed into contactor and open Contactors opening, while battery management The main positive contactor of system BMS controls disconnects;
S207, power cell of vehicle state are changed into state and preserve State Save, and battery management system BMS preserves number According to the second preset time is not to be exceeded in this process dwell time;
S208, power cell of vehicle state are changed into standby Standby, while main bear of battery management system BMS controls connects Tentaculum disconnects, and lower electric process terminates.
Beneficial effects of the present invention are:
The electric control circuit up and down of high-pressure system adds preliminary filling protection circuit, while upward and downward electric process is tied by VMS and BMS Close power cell of vehicle current state and coordinate control jointly, it is to avoid contactor is produced in stateful switchover process because circuital current is mutated Light a fire flower, solve high voltage connector contact and be adhered problem, improve the reliability of high-pressure system, extend making for high-pressure system Use the life-span.
Brief description of the drawings
Fig. 1 is control circuit theory diagrams of the invention;
Fig. 2 is braking method flow chart of the invention;
In figure, 1, entire car controller VMS;2nd, relay;3rd, preliminary filling resistance;4th, preliminary filling contactor;5th, high-voltage load;6th, it is main Negative contactor;7th, main positive contactor;8th, high-tension fuse;9th, power cell of vehicle;10th, battery management system BMS.
Embodiment
The present invention will be further described with embodiment below in conjunction with the accompanying drawings:
As shown in figure 1, electric control circuit above and below a kind of electric automobile high-voltage system, including entire car controller VMS1, and electricity Pond management system BMS10, the battery management system BMS10 and entire car controller VMS1 is in communication with each other;The battery management system System BMS10 is connected with power cell of vehicle 9;Relay 2, its control end is connected with entire car controller VMS1, the output of relay 2 End is connected with power cell of vehicle 9;Main positive contactor 7, its control end is connected with battery management system BMS10, main positive contactor 7 The first output end power cell of vehicle 9 is connected to by a high-tension fuse 8, the second output end connection of main positive contactor 7 To high-voltage load 5;The output end of the positive contactor 7 of master also and has a precharging circuit;
Precharging circuit is made up of preliminary filling resistance 3 and preliminary filling contactor 4, and an end of the preliminary filling resistance 3 is connected on high-voltage fuse Position between first output end of device 8 and main positive contactor 7, another termination preliminary filling contactor 4 first output of preliminary filling resistance 3 End, the second output end of preliminary filling contactor 4 is connected at the tie point of the second output end of high-voltage load 5 and main positive contactor 7;
Main negative contactor 6, its control end is connected with battery management system BMS10, and the first output end of main negative contactor 6 connects Power cell of vehicle 9 is connected to, the second output end of main negative contactor 6 is connected to high-voltage load 5.
Battery management system BMS10 is in communication with each other with entire car controller VMS1 by CAN;Assisted using SAE J1939 View is communicated.
The enable port of high-voltage load 5 is connected with entire car controller VMS1 control port.
As shown in Fig. 2 above and below a kind of electric automobile high-voltage system electric control circuit control method, including upper electric control side Method and lower electric control method, wherein, electrification control method is concretely comprised the following steps:
S101, ON grades of firing key for opening electric automobile;
S102, entire car controller VMS self-inspections;
S103, entire car controller VMS judge self-detection result, if abnormal, and specification breaks down, weight after fixing a breakdown New upper electricity, enters step S104 if normal;
S104, entire car controller VMS control relay adhesives, power cell of vehicle are that battery management system BMS powers;
S105, power cell of vehicle state are upper electric Power up, while battery management system BMS carries out self-inspection;
S106, battery management system BMS judge self-detection result, if abnormal, are re-powered after fixing a breakdown, if normally Then enter step S107;
S107, power cell of vehicle state are changed into standby Standby by upper electric Power up, while battery management system The main negative contactor adhesive of BMS controls;
S108, entire car controller VMS send main positive contactor adhesive to battery management system BMS and instructed;
S109, battery management system BMS receive instruction rear vehicle electrokinetic cell state and are changed into preliminary filling by standby Standby Electric Precharge, while controlling preliminary filling contactor adhesive;
S110, battery management system BMS judge whether preliminary filling succeeds, if preliminary filling is unsuccessful, power cell of vehicle state It is changed into contactor and opens Contactors opening, while the main positive contactor of battery management system BMS controls disconnects;If pre- Success is filled, then into step S111;
S111, power cell of vehicle state are changed into charging complete Ready, and dynamic to entire car controller VMS broadcasting vans Power battery status is changed into this signal of charging complete Ready, while the main positive contactor adhesive of battery management system BMS controls;
S112, entire car controller VMS control high-voltage load enable upper electricity, it is allowed to which high-voltage load works, and power up terminates.
Lower electric control method is concretely comprised the following steps:
S201, ON grades of firing key for closing electric automobile;
S202, entire car controller VMS control high-voltage load enable lower electricity;
S203, entire car controller VMS send main positive contactor open command to battery management system BMS;
S204, battery management system BMS detect present battery current status;
S205, battery management system BMS judge whether present battery electric current is 0, if 0 enters step S206, if not For 0, then return to step S204;Battery management system BMS this state residence time no more than the first preset time, if super The first preset time is crossed, then is forced into step S206;
S206, power cell of vehicle state are changed into contactor and open Contactors opening, while battery management The main positive contactor of system BMS controls disconnects;
S207, power cell of vehicle state are changed into state and preserve State Save, and battery management system BMS preserves number According to the second preset time is not to be exceeded in this process dwell time;
S208, power cell of vehicle state are changed into standby Standby, while main bear of battery management system BMS controls connects Tentaculum disconnects, and lower electric process terminates.
It is preferred that, the ID for sending battery status for electrokinetic cell is " 0x18FF14F3 ", takes 4 binary digits, changes Calculation is that metric representation is:0 represents BATT_STATE_POWER_UP states, 1 to represent BATT_STATE_ standby Standby states, 2 represent BATT_STATE_ precharge Precharge states, 3 represent BATT_STATE_ charging completes Ready State, 4 represent BATT_STATE_OPENING states, 5 to represent BATT_STATE_SAVE states, 6-14 be reserved state, 15 tables Show that state is invalid.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.

Claims (7)

1. electric control circuit above and below a kind of electric automobile high-voltage system, it is characterised in that including entire car controller VMS, and battery Management system BMS, the battery management system BMS and entire car controller VMS are in communication with each other;The battery management system BMS with Power cell of vehicle is connected;
Relay, its control end is connected with entire car controller VMS, and the output end of relay is connected with power cell of vehicle;
Main positive contactor, its control end is connected with battery management system BMS, and the first output end of main positive contactor is connected to vehicle Electrokinetic cell, the second output end of main positive contactor is connected to high-voltage load;The output end of the positive contactor of master also and has pre- Charging circuit;
Main negative contactor, its control end is connected with battery management system BMS, and the first output end of main negative contactor is connected to vehicle Electrokinetic cell, the second output end of main negative contactor is connected to high-voltage load;
First output end of the positive contactor of master is connected to power cell of vehicle by a high-tension fuse;
Above and below the electric automobile high-voltage system during the upper electric control of electric control circuit, entire car controller VMS control relays Adhesive, power cell of vehicle is that battery management system BMS powers;First, power cell of vehicle state is upper electric Power up, together When battery management system BMS carry out self-inspection:Battery management system BMS judges self-detection result, if abnormal, weight after fixing a breakdown New upper electricity, power cell of vehicle state is changed into standby Standby by upper electric Power up if normal, while battery management system Uniting, BMS controls are main to bear contactor adhesive, and entire car controller VMS sends main positive contactor adhesive to battery management system BMS afterwards Instruction;Afterwards, battery management system BMS, which is received, instructs rear vehicle electrokinetic cell state to be changed into precharge by standby Standby Preliminary filling contactor adhesive is controlled while Precharge;Battery management system BMS judges whether preliminary filling succeeds again, if preliminary filling is not Successful, then power cell of vehicle state is changed into contactor opening Contactors opening, while battery management system BMS The main positive contactor of control disconnects, if preliminary filling success, and power cell of vehicle state is changed into charging complete Ready, and to vehicle Controller VMS broadcasting van electrokinetic cell states are changed into this signal of charging complete Ready, while battery management system BMS The main positive contactor adhesive of control;Last entire car controller VMS control high-voltage loads enable upper electricity, it is allowed to which high-voltage load works, on Electric process terminates;
Above and below the electric automobile high-voltage system during the lower electric control of electric control circuit, battery management system BMS is first determined whether Whether present battery electric current is 0, if 0, then power cell of vehicle state be changed into contactor open Contactors Opening, while the main positive contactor of battery management system BMS controls disconnects;If not 0, then battery management system BMS continuation is examined Survey present battery current status;The residence time of battery management system BMS detection present battery current status is pre- no more than first If the time, if more than the first preset time, forcing power cell of vehicle state to be changed into contactor and opening Contactors Opening, while the main positive contactor of battery management system BMS controls disconnects, power cell of vehicle state is changed into state preservation State Save, battery management system BMS preserve data, and the second preset time is not to be exceeded in this process dwell time;Afterwards, car Electrokinetic cell state is changed into standby Standby, while the main negative contactor of battery management system BMS controls disconnects, lower electric mistake Journey terminates.
2. electric control circuit above and below a kind of electric automobile high-voltage system as claimed in claim 1, it is characterised in that the preliminary filling Circuit is made up of preliminary filling resistance and preliminary filling contactor, and an end of the preliminary filling resistance is connected on the first output end of main positive contactor, The first output end of another termination preliminary filling contactor of preliminary filling resistance, the second output end of preliminary filling contactor be connected to high-voltage load with At the tie point of second output end of main positive contactor.
3. electric control circuit above and below a kind of electric automobile high-voltage system as claimed in claim 1, it is characterised in that the battery Management system BMS is in communication with each other with entire car controller VMS by CAN.
4. electric control circuit above and below a kind of electric automobile high-voltage system as claimed in claim 1, it is characterised in that the battery Management system BMS is communicated with entire car controller VMS using SAE J1939 agreements.
5. electric control circuit above and below a kind of electric automobile high-voltage system as claimed in claim 1, it is characterised in that high-voltage load Enable port be connected with entire car controller VMS control port.
6. the control of electric control circuit above and below a kind of electric automobile high-voltage system as described in claim 1-5 any claims Method, it is characterised in that including electrification control method, it is concretely comprised the following steps:
S101, ON grades of firing key for opening electric automobile;
S102, entire car controller VMS self-inspections;
S103, entire car controller VMS judge self-detection result, if abnormal, specification break down, after fixing a breakdown again on Electricity, enters step S104 if normal;
S104, entire car controller VMS control relay adhesives, power cell of vehicle are that battery management system BMS powers;
S105, power cell of vehicle state are upper electric Power up, while battery management system BMS carries out self-inspection;
S106, battery management system BMS judge self-detection result, if abnormal, are re-powered after fixing a breakdown, and enter if normal Enter step S107;
S107, power cell of vehicle state are changed into standby Standby by upper electric Power up, while battery management system BMS The main negative contactor adhesive of control;
S108, entire car controller VMS send main positive contactor adhesive to battery management system BMS and instructed;
S109, battery management system BMS receive instruction rear vehicle electrokinetic cell state and are changed into precharge by standby Standby Precharge, while controlling preliminary filling contactor adhesive;
S110, battery management system BMS judge whether preliminary filling succeeds, if preliminary filling is unsuccessful, the transformation of power cell of vehicle state Contactors opening are opened for contactor, while the main positive contactor of battery management system BMS controls disconnects;If preliminary filling into Work(, then into step S111;
S111, power cell of vehicle state are changed into charging complete Ready, and to entire car controller VMS broadcasting van power electrics Pond state is changed into this signal of charging complete Ready, while the main positive contactor adhesive of battery management system BMS controls;
S112, entire car controller VMS control high-voltage load enable upper electricity, it is allowed to which high-voltage load works, and power up terminates.
7. the control of electric control circuit above and below a kind of electric automobile high-voltage system as described in claim 1-5 any claims Method, it is characterised in that also including lower electric control method, it is concretely comprised the following steps:
S201, ON grades of firing key for closing electric automobile;
S202, entire car controller VMS control high-voltage load enable lower electricity;
S203, entire car controller VMS send main positive contactor open command to battery management system BMS;
S204, battery management system BMS detect present battery current status;
S205, battery management system BMS judge whether present battery electric current is 0, if 0 enters step S206, if not 0, Then return to step S204;Battery management system BMS this state residence time no more than the first preset time, if more than the One preset time, then be forced into step S206;
S206, power cell of vehicle state are changed into contactor and open Contactors opening, while battery management system The main positive contactor of BMS controls disconnects;
S207, power cell of vehicle state are changed into state and preserve State Save, and battery management system BMS preserves data, this The second preset time is not to be exceeded in the process dwell time;
S208, power cell of vehicle state are changed into standby Standby, while the main negative contactor of battery management system BMS controls Disconnect, lower electric process terminates.
CN201510481711.XA 2015-08-03 2015-08-03 Electric control circuit and control method above and below a kind of electric automobile high-voltage system CN105172608B (en)

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