CN102390331B - Entire vehicle controller integrated with battery management system for pure electric automobile - Google Patents

Entire vehicle controller integrated with battery management system for pure electric automobile Download PDF

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Publication number
CN102390331B
CN102390331B CN 201110263779 CN201110263779A CN102390331B CN 102390331 B CN102390331 B CN 102390331B CN 201110263779 CN201110263779 CN 201110263779 CN 201110263779 A CN201110263779 A CN 201110263779A CN 102390331 B CN102390331 B CN 102390331B
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CN
China
Prior art keywords
relay coil
signal
interface
battery
described
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CN 201110263779
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Chinese (zh)
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CN102390331A (en
Inventor
杨辉前
朴昌浩
郑英
胡明辉
陈淑江
赵川林
赵立波
牟丽莎
Original Assignee
重庆长安汽车股份有限公司
重庆长安新能源汽车有限公司
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Priority to CN 201110263779 priority Critical patent/CN102390331B/en
Publication of CN102390331A publication Critical patent/CN102390331A/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 for electromobility
    • Y02T10/7005Batteries

Abstract

The invention discloses an entire vehicle controller integrated with a battery management system for a pure electric automobile. The controller is provided with a microprocessor module, a power supply module, an analog quantity input interface, a digital quantity input interface, a digital quantity output interface, a CAN (Controller Area Network) interface and the like, wherein the analog quantity input interface is connected with five analog input signals; the digital quantity input interface is connected with five switch signals and a frequency signal; the digital quantity output interfaceis connected with six digital output signals; and the CAN interface is connected with five CAN nodes. In the invention, the function of the battery management system is integrated into the entire vehicle controller, so that the quantity of vehicle-mounted control units is reduced, the development cost of an entire vehicle control system is lowered, and the reliability of the entire vehicle control system is improved simultaneously. Moreover, an entire vehicle control program is used for determining a required torque according to an accelerator signal, an SOC (System on a Chip), the vehicle speed and motor characteristic data and realizing the required torque through a driving motor to drive an entire vehicle to run, so that the driveability of the entire vehicle is optimized, and the driving range is enlarged.

Description

A kind of pure electric automobile entire car controller of integrated battery management system

Technical field

The present invention relates to a kind of pure electric automobile entire car controller of integrated battery management system, belong to pure electric automobile control field.

Background technology

Along with becoming increasingly conspicuous of environmental protection and energy problem, electronlmobil is with its zero-emission, low noise and other advantages and receive much attention, countries in the world all electronlmobil as the developing of automobile industry direction.In recent years, though many countries all drop into substantial contribution manpower studies electronlmobil, electrokinetic cell and some other guardian technique are not also obtained effectively and are broken through so far, and the continual mileage of electrokinetic cell has restricted the development of electronlmobil greatly and popularized.Before battery problems solved, car load control technology and battery energy management development of technology were to improve the effective way of continual mileage.

Summary of the invention

Primary and foremost purpose of the present invention is the pure electric automobile entire car controller that a kind of low cost, high reliability is provided, can improves continual mileage.For realizing above purpose, the present invention has adopted following technical scheme:

A kind of pure electric automobile entire car controller of integrated battery management system, described controller comprise microprocessor module, power module, analog quantity input interface, digital-quantity input interface, digital-quantity output interface, CAN interface; It is characterized in that:

Described microprocessor module is the nucleus module of The whole control system, and described power module, analog quantity input interface, digital-quantity input interface, digital-quantity output interface, CAN interface are the peripheral interface circuit of microprocessor module;

Described power module links to each other with the little storage battery of 12V is anodal by power control relay, is the controller required voltage with the 12V voltage transitions;

Described analog quantity input interface links to each other with vacuum pressure sensor, accelerator pedal sensor, 12V storage battery positive pole, temperature sensor, current sensor by the car load wire harness, is used for gathering vacuum-pressure signal, acceleration pedal signal, 12 cell voltage signals, temperature of powered cell signal and electrokinetic cell current signal; Described digital-quantity input interface links to each other with brake lamp, backing-up lamp, ignition lock, battery charger 12V output, PTC switch, car speed sensor by the car load wire harness, is used for gathering brake lamp signal, backing-up lamp signal, ignition lock signal, outer charging signals, PTC on-off signal and vehicle speed signal; Described digital-quantity output interface links to each other with main positive relay coil negative terminal, main negative relay coil negative terminal, pre-charge-relay coil negative terminal, vacuum pump relay coil negative terminal, outer charge relay coil negative terminal, PTC relay coil negative terminal, power control relay coil negative terminal by the car load wire harness, be responsible for receiving each relay control signal that microprocessor module issues, drive each relay on the electronlmobil; Each relay anode links to each other with the 12V power positive end respectively.

Described CAN interface links to each other with the CAN node by the CAN bus, described CAN node comprises electric machine controller, intelligence instrument, battery data acquisition module, DC/DC module, battery charger etc., carries out data exchange by other CAN nodes in CAN interface and the car load CAN network.

Further, the function of battery management system that described entire car controller is integrated, entire car controller communicates by CAN bus and battery data acquisition module, the battery data acquisition module sends to entire car controller with the battery status data, and described battery status data comprise monomer battery voltage, temperature, battery total voltage and insulation resistance.Described vehicle control unit controls software has comprised the SOC computing module, the overvoltage of electrokinetic cell monomer, under-voltage, excess temperature detection module, the overvoltage of electrokinetic cell total voltage, under-voltage detection module etc.

In order to improve the continual mileage of pure electric automobile, the present invention also provides a kind of pure electric automobile control method, it is characterized in that, said method comprising the steps of:

(1) behind the car load power-on self-test, at first judging to have does not have outer charging demand, if outer charging demand is arranged then enter outer charging flow, the vehicle-mounted charge machine is to power battery charging;

(2) if do not have outer charging demand would need to judge torque whether be zero and each high-voltage relay electric demand down such as whether disconnect, electric demand then enters down the electric current journey if having down, the disconnection of entire car controller high-voltage relay;

(3) if electric demand then enters the flow process that powers on/drive not, even electrokinetic cell is not connected, and then carries out high pressure to power on, and carries out corresponding driving flow process according to operating mode demands such as braking, reversings again;

After entering the driven flow process, at first judging the fault level of battery, motor, is fault level 3 if battery or motor et out of order and reduction performance requirement still can not normally move, and then enters stopped status; If battery or motor get fault level and only report to the police or et out of order, but can normally move behind the reduction performance requirement is fault level 1,2, then enter the motor torque command calculation process, determine demand torque according to throttle signal, SOC, the speed of a motor vehicle, motor characteristic data, realize this demand torque by drive motor then, drive car load and travel.

As shown from the above technical solution, the present invention is integrated into the function of battery management system in the entire car controller, has reduced the quantity of vehicular control unit, has reduced the cost of development of whole-control system, has improved the reliability of whole-control system simultaneously.In addition, the car load control program is determined demand torque according to throttle signal, SOC, the speed of a motor vehicle, motor characteristic data, realizes this demand torque by drive motor then, drives car load and travels, and realizes the optimization of car load driving, has prolonged continual mileage.

Description of drawings

Fig. 1 is the pure electric automobile fundamental diagram;

Fig. 2 is the entire car controller functional block diagram;

Fig. 3 is that the pure electric automobile car load is controlled the flow process that powers on/drive;

Fig. 4 is that the control of pure electric automobile car load drives control flow;

Fig. 5 is pure electric automobile car load control main flow.

The specific embodiment:

Be described in further details below in conjunction with the technical scheme of Figure of description to the application.

Accompanying drawing 1 is the pure electric automobile fundamental diagram, and wherein entire car controller is judged according to inputs such as acquisition module, vehicle-mounted charge machine, brake system, PTC, electric machine controllers, and feedback signal is informed each module and relay is operated accordingly.

Accompanying drawing 2 entire car controller functional block diagrams of the present invention, this pure electric automobile entire car controller comprises modules such as microprocessor module, power module, analog quantity input interface, digital-quantity input interface, digital-quantity output interface, CAN interface.Wherein, microprocessor module is the core of controller, and other module is the peripheral interface circuit of microprocessor module; Power module links to each other with the little storage battery of 12V is anodal by power control relay; The analog quantity input interface links to each other with vacuum pressure sensor, accelerator pedal sensor, 12V storage battery positive pole, temperature sensor, current sensor by the car load wire harness; Digital-quantity input interface links to each other with brake lamp, backing-up lamp, ignition lock, battery charger 12V output, PTC switch, car speed sensor by the car load wire harness; Digital-quantity output interface links to each other with main positive relay coil negative terminal, main negative relay coil negative terminal, pre-charge-relay coil negative terminal, vacuum pump relay coil negative terminal, outer charge relay coil negative terminal, PTC relay coil negative terminal, power supply relay coil negative terminal by the car load wire harness; The CAN interface links to each other with electric machine controller, gauge panel, battery data acquisition module, DC/DC, battery charger by the CAN bus.

Power module becomes CPU and the needed voltage of discharge circuit with the 12V voltage transitions of storage battery, and power module also provides the 5V power supply to export to the sensor power supply simultaneously.

Entire car controller is gathered vacuum-pressure signal, acceleration pedal signal, cell voltage signal, temperature of powered cell signal, electrokinetic cell current signal for the use of control software by the analog quantity input interface.

Entire car controller is gathered brake lamp signal, backing-up lamp signal, ignition lock signal, outer charging signals, PTC on-off signal, vehicle speed signal for the use of control software by digital-quantity input interface.

Entire car controller is realized vehicle is controlled by the connecting and disconnecting of the main positive relay of digital-quantity output interface control, main negative relay, pre-charge-relay, vacuum pump relay, outer charge relay, PTC relay, power control relay.

Entire car controller is communicated by letter with the battery acquisition module by the CAN interface, and the battery status data that reception battery acquisition module sends over are used for control software.

Entire car controller communicates by CAN interface and electric machine controller, entire car controller receives the electric machine operation state signal that electric machine controller sends over, according to motor status signal, battery status signal, with car load turntable calculated signals output torque, by the CAN bus control command is sent to electric machine controller then, realize that entire car controller is to the control of power system.

Entire car controller is communicated by letter with DC/DC by the CAN interface, and control DC/DC converts the electrokinetic cell high pressure to 12V voltage and gives little storage battery charging.

Entire car controller is communicated by letter with gauge panel by the CAN interface, and car load critical data and breakdown signal are sent to the gauge panel demonstration, provides the car load operation information to chaufeur.

A kind of pure electric automobile control method, the present invention will control main flow to car load, the flow process that powers on/drive, drive control flow and describe.

5 pure electric automobile control method of finished based on controller of the present invention by reference to the accompanying drawings, its step is as follows:

(1) behind the car load power-on self-test, at first judging to have does not have outer charging demand, if outer charging demand is arranged then enter outer charging flow, the vehicle-mounted charge machine is to power battery charging;

(2) if do not have outer charging demand would need to judge torque whether be zero and high-voltage relay electric demand down such as whether disconnect, electric demand then enters down the electric current journey if having down, the disconnection of entire car controller powever relay;

(3) if electric demand then enters the flow process that powers on/drive not.

By reference to the accompanying drawings 3, enter power on/drive flow process after, judge at first whether electrokinetic cell is connected, then do not enter the high pressure flow process that powers on if high pressure not connect; Then carry out the operating mode judgement if high pressure is connected, enter corresponding operating mode subprogram according to judged result.By reference to the accompanying drawings 4, enter the driven flow process after, at first judge the fault level of battery, motor, if battery or motor et out of order and reduce performance requirement still can not normally move be fault level greater than 2, then enter stopped status; If battery or motor get fault level and only report to the police or et out of order, but can normally move behind the reduction performance requirement and fault level is respectively 1 and 2, then enter the motor torque command calculation process, determine demand torque according to throttle signal, SOC, the speed of a motor vehicle, motor characteristic data, realize this demand torque by drive motor then, drive car load and travel.

Claims (4)

1. the pure electric automobile entire car controller of an integrated battery management system, described entire car controller comprises microprocessor module, power module, analog quantity input interface, digital-quantity input interface, digital-quantity output interface, CAN interface; It is characterized in that:
Described microprocessor module is the nucleus module of The whole control system, and described power module, analog quantity input interface, digital-quantity input interface, digital-quantity output interface, CAN interface are the peripheral interface circuit of microprocessor module;
Described power module links to each other by power control relay and 12V storage battery are anodal, is described pure electric automobile entire car controller required voltage with the 12V voltage transitions;
Described analog quantity input interface links to each other with vacuum pressure sensor, accelerator pedal sensor, 12V storage battery positive pole, temperature sensor, battery current sensor by the car load wire harness, is respectively applied to gather vacuum-pressure signal, acceleration pedal signal, 12V cell voltage signal, temperature of powered cell signal and electrokinetic cell current signal;
Described digital-quantity input interface links to each other with brake lamp, backing-up lamp, ignition lock, battery charger 12V output, PTC switch, car speed sensor by the car load wire harness, is used for gathering brake lamp signal, backing-up lamp signal, ignition lock signal, outer charging signals, PTC on-off signal and vehicle speed signal;
Described digital-quantity output interface is by car load wire harness and main positive relay coil negative terminal, main negative relay coil negative terminal, pre-charge-relay coil negative terminal, vacuum pump relay coil negative terminal, outer charge relay coil negative terminal, PTC relay coil negative terminal, power control relay coil negative terminal links to each other, be responsible for receiving each relay control signal that microprocessor module issues, drive each relay on the electronlmobil, the positive relay coil anode of described master, main negative relay coil anode, pre-charge-relay coil anode, vacuum pump relay coil anode, outer charge relay coil anode, PTC relay coil anode, power control relay coil anode links to each other with 12V storage battery anode respectively;
Described CAN interface links to each other with the CAN node by the CAN bus, described CAN node comprises electric machine controller, intelligence instrument, battery data acquisition module, DC/DC module, battery charger, carries out data exchange by other CAN nodes in CAN interface and the car load CAN network.
2. the pure electric automobile control method based on the described entire car controller of claim 1 is characterized in that, said method comprising the steps of:
(1) behind the car load power-on self-test, at first judging to have does not have outer charging demand, if outer charging demand is arranged then enter outer charging flow, the vehicle-mounted charge machine is to power battery charging;
(2) if do not have outer charging demand then judged whether down electric demand, described electric demand down comprise judges torque whether be zero and each relay whether disconnect, electric demand then enters down the electric current journey if having down, i.e. entire car controller high-voltage relay disconnection;
(3) if electric demand then enters the flow process that powers on/drive not, even electrokinetic cell is not connected, and then carries out high pressure to power on, and carries out corresponding driving flow process according to the operating mode demand again.
3. pure electric automobile control method according to claim 2 is characterized in that:
Comprise damped condition, astern condition, limping operating mode, starting operating mode and driven operating mode in operating mode described in the step (3).
4. pure electric automobile control method according to claim 3 is characterized in that:
After entering the corresponding driven flow process of driven operating mode, at first judge the fault level of battery, motor, if battery or motor et out of order and reduction performance requirement still can not normally move, then enter stopped status; If the fault level of battery or motor is only reported to the police or et out of order, but can normally move behind the reduction performance requirement, then enter the motor torque command calculation process, determine demand torque according to throttle signal, SOC, the speed of a motor vehicle, motor characteristic data, realize this demand torque by drive motor then, drive car load and travel.
CN 201110263779 2011-09-07 2011-09-07 Entire vehicle controller integrated with battery management system for pure electric automobile CN102390331B (en)

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CN103759756B (en) * 2013-12-21 2016-05-25 柳州航盛科技有限公司 A kind of lower computer hardware circuit board of automobile combination instrument test device
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CN106143207A (en) * 2015-04-02 2016-11-23 北京长城华冠汽车科技有限公司 Electric automobile whole-control system
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CN107168289B (en) * 2017-06-02 2019-10-01 重庆大学 A kind of entire car controller of pure electric vehicle equation motorcycle race
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Address after: 231283 No. 966 Dabieshan Road, Hefei High-tech Zone, Anhui Province

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Co-patentee after: Chongqing Chang'an New Energy Automobile Co., Ltd.

Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing

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