WO2022041546A1 - 一种增程器反转保护控制系统及方法 - Google Patents

一种增程器反转保护控制系统及方法 Download PDF

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WO2022041546A1
WO2022041546A1 PCT/CN2020/133359 CN2020133359W WO2022041546A1 WO 2022041546 A1 WO2022041546 A1 WO 2022041546A1 CN 2020133359 W CN2020133359 W CN 2020133359W WO 2022041546 A1 WO2022041546 A1 WO 2022041546A1
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generator
controller
range extender
flywheel
engine
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PCT/CN2020/133359
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English (en)
French (fr)
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陆浩
杨靖民
毛正松
杨登富
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广西玉柴机器股份有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/15—Control strategies specially adapted for achieving a particular effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/081—Speed
    • 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
    • Y02T10/62—Hybrid vehicles

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  • the invention relates to the technical field of electric vehicles, in particular to a range extender reverse protection control system and method.
  • New energy vehicles use unconventional vehicle fuels as power sources, and integrate advanced technologies in vehicle power control and driving to form vehicles with new technologies, new structures, and advanced technical principles.
  • New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.
  • the existing range extender control system is mainly composed of engine, motor, range extender controller and generator controller.
  • the control system is mainly based on engine efficiency, electric drive system efficiency, powertrain NVH, etc. work point.
  • the existing range extender control system does not fully consider that after the engine stops fuel injection at a certain time due to abnormal conditions, the engine is quickly dragged by the motor or even reversed, causing problems such as engine damage.
  • the present invention provides a range extender reverse protection control system and method, which aims to solve the operating conditions of the range extender assembly in the prior art, and there is a problem that the motor rotates due to the stop of injection of the engine. The torque remains unchanged, causing the engine to be stalled or even reversed, causing problems such as the risk of engine cylinder damage.
  • a range extender reverse protection control system comprising an engine, an engine controller ECU, a flywheel integrated generator, a generator controller GCU, and a range extender system controller RCU, wherein the engine is electrically connected to the engine controller ECU, The flywheel-integrated generator is electrically connected to the generator controller GCU, and the range extender system controller RCU is electrically connected to the engine controller ECU and the generator controller GCU respectively through the CAN bus.
  • a method for a reverse protection control system of a range extender including a generator speed monitoring and control method, comprising the following steps:
  • the generator controller GCU monitors the rotational speed of the flywheel-integrated generator, and detects whether the rotational speed of the flywheel-integrated generator is less than the preset calibration value, if so, it goes to step S2; otherwise, it goes to step S3;
  • step S2 The generator controller GCU does not respond to the instruction sent by the range extender system controller RCU, the generator controller GCU makes the flywheel integrated generator idling, and its output torque is 0, and then proceeds to step S4;
  • step S3 The generator controller GCU normally responds to the command sent by the range extender system controller RCU, and then proceeds to step S4;
  • a method for a reverse protection control system of a range extender comprising a generator steering monitoring and control method, comprising the following steps:
  • Step 200 start the system, and preset the speed of the flywheel-integrated generator
  • Step 201 The generator controller GCU monitors the steering of the flywheel-integrated generator, and monitors whether the steering of the flywheel-integrated generator is inconsistent with the command steering;
  • Step 202 monitor whether the current rotational speed of the flywheel integrated generator is greater than the preset rotational speed, if yes, go to step 204, otherwise go to step 205;
  • Step 203 The generator controller GCU normally responds to the instruction sent by the range extender system controller RCU, and then proceeds to step 206;
  • Step 204 the generator controller GCU does not respond to the range extender controller RCU command mode, and the generator controller GCU idles the flywheel-integrated generator to stop output torque, and then proceeds to step 206;
  • Step 205 The generator controller GCU normally responds to the instruction sent by the range extender system controller RCU, and then proceeds to step 206;
  • Step 206 End.
  • the range extender reversal protection control system provided by the invention can ensure the safe and reliable operation of the range extender system, avoid the engine reversal damage to the whole system; and can be realized without adding hardware, saving the cost and cycle of development, and Through the control of the generator controller, when the system is abnormal, the system can be quickly shut down to avoid damage.
  • FIG. 1 is a schematic structural diagram of a range extender inversion protection control system and method provided by an embodiment of the present invention
  • FIG. 2 is a flow chart of generator speed monitoring control of the range extender reverse protection control system and method provided by the embodiment of the present invention
  • Fig. 3 is the generator steering monitoring control flow chart of the range extender reverse protection control system and method provided by the embodiment of the present invention
  • the present invention provides a range extender reverse protection control system, including an engine 1, an engine controller ECU2, a flywheel integrated generator 3, a generator controller GCU4, and a range extender system control system.
  • RCU5 the engine 1 is electrically connected to the engine controller ECU2, the flywheel integrated generator 3 is electrically connected to the generator controller GCU4, and the range extender system controller RCU5 is connected to the engine controller ECU2, the generator controller via the CAN bus, respectively.
  • the engine controller GCU4 is electrically connected, so that the range extender system controller RCU5 can communicate with the engine controller ECU2 and the generator controller GCU4 through the CAN bus.
  • a method for a reverse protection control system of a range extender including a generator speed monitoring and control method, comprising the following steps:
  • the generator controller GCU4 monitors the rotational speed of the flywheel-integrated generator, and detects whether the rotational speed of the flywheel-integrated generator is less than the pre-set calibration value, if so, it goes to step S2; otherwise, it goes to step S3;
  • the generator controller GCU4 does not respond to the command sent by the range extender system controller RCU5, at this time, the flywheel-integrated generator is idling, and its output torque is 0, and then goes to step S4;
  • a method for a reverse protection control system of a range extender comprising a generator steering monitoring and control method, comprising the following steps:
  • Step 200 start the system, and preset the speed of the flywheel-integrated generator
  • Step 201 The generator controller GCU4 monitors the steering of the flywheel-integrated generator, and monitors whether the steering of the flywheel-integrated generator is inconsistent with the command steering;
  • Step 202 monitor whether the current rotational speed of the flywheel integrated generator is greater than the pre-calibrated rotational speed, if yes, go to step 204, otherwise go to step 205;
  • Step 203 the generator controller GCU4 normally responds to the command sent by the range extender system controller RCU5, and then enters Step 206;
  • Step 204 the generator controller GCU4 does not respond to the command mode of the range extender controller RCU5, and the generator controller GCU makes the flywheel-integrated generator idling to stop the output torque, and then proceeds to step 206;
  • Step 205 The generator controller GCU4 normally responds to the instruction sent by the range extender system controller RCU5, and then proceeds to step 206;
  • Step 206 End.
  • the sampling period of the generator controller GCU4 of the present invention is 2kHZ-8kHZ, so the generator controller GCU4 can quickly and effectively limit the engine speed to ensure that the engine does not reverse due to stop injection. Moreover, the present invention does not increase any hardware and mechanical costs, and the engine reverse protection function can be realized through the generator controller GCU4, which ensures the safety and reliability of the system and reduces the development cycle and development cost.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

一种增程器反转保护控制系统及方法，包括发动机（1）、发动机控制器ECU（2）、飞轮集成式发电机（3）、发电机控制器GCU（4）、增程器系统控制器RCU（5），发动机（1）与发动机控制器ECU（2）电连接，所述飞轮集成式发电机（3）与发电机控制器GCU（4）电连接，增程器系统控制器RCU（5）通过CAN总线分别与发动机控制器ECU（2）、发电机控制器GCU（4）电连接；其解决了现有技术中增程器总成在运行中存在因发动机（1）停喷，电机转矩仍不改变，使发动机（1）被拖停甚至反转，而造成发动机（1）拉缸损坏的风险等问题。

Description

一种增程器反转保护控制系统及方法 技术领域
本发明涉及电动汽车技术领域，特别是一种增程器反转保护控制系统及方法。
背景技术
目前，汽车污染日益成为全球性问题。随着汽车数量越来越多、使用范围越来越广，它对世界环境的负面效应也越来越大，尤其是危害城市环境，引发呼吸系统疾病，造成地表空气臭氧含量过高，加重城市热岛效应，使城市环境转向恶化。在美国、日本、欧洲等发达国家，由于新技术发展的推动和政府对汽车排放越来越苛刻，各大汽车公司投入了大量的人力、物力和财力用于新能源汽车的开发，不断推出自己的新产品。
新能源汽车采用非常规的车用燃料作为动力来源，综合车辆的动力控制和驱动方面的先进技术，形成的具有新技术、新结构、技术原理先进的汽车。新能源汽车包括纯电动汽车、增程式电动汽车、混合动力汽车、燃料电池电动汽车、氢发动机汽车等。
纯电动汽车虽然存在诸多优点，如污染小、噪音低、高效率、结构简单等，但是其有较为突出的缺点，在于其续航里程短，而增程式动力总成能有效解决纯电动汽车续航里程的问题，其已成为当今新能源汽车发展研究的热点之一。现有增程器控制系统主要由发动机、电机、增程器控制器、发电机控制器组成，其控制系统主要基于发动机效率、电驱系统效率、动力总成NVH等，使系统工作在最优工作点。但现有增程器控制系统未充分考虑发动机因异常情况某个时刻停止喷油后，发动机被电机迅速拖停甚至反转，从而引起发动机损坏等问题。
发明内容
针对现有技术存在的问题，本发明提供了一种增程器反转保护控制系统及方法，目的是解决现有技术中增程器总成的运行工况，存在因发动机停喷，电机转矩仍不改变，使发动机被拖停甚至反转，而造成发动机拉缸损坏的风险等问题。
为实现上述发明目的，本发明的技术方案如下：
一种增程器反转保护控制系统，包括发动机、发动机控制器ECU、飞轮集成式发电机、发电机控制器GCU、增程器系统控制器RCU，所述发动机与发动机控制器ECU电连接，所述飞轮集成式发电机与发电机控制器GCU电连接，增程器系统控制器RCU通过CAN总线分别与发动机控制器ECU、发电机控制器GCU电连接。
一种增程器反转保护控制系统的方法，包括发电机转速监控控制方法，有如下步骤：
S0：开始启动系统，预先设定飞轮集成式发电机转速标定值；
S1：发电机控制器GCU监测飞轮集成式发电机转速，监测到飞轮集成式发电机转速是否小于预先设定的标定值，是则进入步骤S2；否则进入步骤S3；
S2：发电机控制器GCU不响应增程器系统控制器RCU发送的指令，发电机控制器GCU使得飞轮集成式发电机空转，其输出扭矩为0，而后进入步骤S4；
S3：发电机控制器GCU正常响应增程器系统控制器RCU发送的指令，而后进入步骤S4；
S4：结束。
一种增程器反转保护控制系统的方法，还包括发电机转向监控控制方法，有如下步骤：
步骤200：开始启动系统，预先设定飞轮集成式发电机转速；
步骤201：发电机控制器GCU监测飞轮集成式发电机转向，监测飞轮集成式发电机转向是否与指令转向不一致，是则进入步骤202，否则进入步骤203；
步骤202：监测飞轮集成式发电机当前的转速是否大于预先设定的转速，是则进入步骤204，否则进入步骤205；
步骤203：发电机控制器GCU正常响应增程器系统控制器RCU发送的指令，而后进入步骤206；
步骤204：发电机控制器GCU不响应增程器控制器RCU指令模式，且发电机控制器GCU使飞轮集成式发电机空转，停止输出扭矩，而后进入步骤206；
步骤205：发电机控制器GCU正常响应增程器系统控制器RCU发送的指令，而后进入步骤206；
步骤206：结束。
本发明的有益效果：
本发明提供的一种增程器反转保护控制系统，能够保证增程器系统安全可靠运行，避免发动机反转损坏整个系统；而且无需增加硬件即可实现，节省了开发的成本和周期，而且通过发电机控制器的控制，在系统异常时，可以快速使得系统停机，避免损坏的发生。
附图说明
图1为本发明实施例提供的增程器反转保护控制系统及方法的结构示意图；
图2为本发明实施例提供的增程器反转保护控制系统及方法的发电机转速监控控制流程图；
图3为本发明实施例提供的增程器反转保护控制系统及方法的发电机转向监控控制流程图；
图中，1-发动机、2-发动机控制器ECU、3-飞轮集成式发电机、4-发电机控制器GCU、5-增程器系统控制器RCU。
具体实施方式
为详细说明本发明的技术内容、所实现目的及效果，以下结合实施例并配合附图予以说明。
实施例
如图1-3所示，本发明提供了一种增程器反转保护控制系统，包括发动机1、发动机控制器ECU2、飞轮集成式发电机3、发电机控制器GCU4、增程器系统控制器RCU5，所述发动机1与发动机控制器ECU2电连接，所述飞轮集成式发电机3与发电机控制器GCU4电连接，增程器系统控制器RCU5通过CAN总线分别与发动机控制器ECU2、发电机控制器GCU4电连接，这样增程器系统控制器RCU5就可以通过CAN总线与发动机控制器ECU2、发电机控制器GCU4实现信息的交互。
一种增程器反转保护控制系统的方法，包括发电机转速监控控制方法，有如下步骤：
S0：开始启动系统，预先设定飞轮集成式发电机转速标定值；
S1：发电机控制器GCU4监测飞轮集成式发电机转速，监测到飞轮集成式发电机转速是否小于预先设定的标定值，是则进入步骤S2；否则进入步骤S3；
S2：发电机控制器GCU4不响应增程器系统控制器RCU5发送的指令，这时，飞轮集成式发电机空转，其输出扭矩为0，而后进入步骤S4；
S3：发电机控制器GCU4正常响应增程器系统控制器RCU5发送的指令，而后进入步骤S4；
S4：结束。
一种增程器反转保护控制系统的方法，还包括发电机转向监控控制方法，有如下步骤：
步骤200：开始启动系统，预先设定飞轮集成式发电机转速；
步骤201：发电机控制器GCU4监测飞轮集成式发电机转向，监测飞轮集成式发电机转向是否与指令转向不一致，是则进入步骤202，否则进入步骤203；
步骤202：监测飞轮集成式发电机当前的转速是否大于预先标定的转速，是则进入步骤204，否则进入步骤205；
步骤203：发电机控制器GCU4正常响应增程器系统控制器RCU5发送的指令，而后进入 步骤206；
步骤204：发电机控制器GCU4不响应增程器控制器RCU5指令模式，且发电机控制器GCU使飞轮集成式发电机空转，停止输出扭矩，而后进入步骤206；
步骤205：发电机控制器GCU4正常响应增程器系统控制器RCU5发送的指令，而后进入步骤206；
步骤206：结束。
本发明的发电机控制器GCU4的采样周期为2kHZ-8kHZ，所以通过发电机控制器GCU4能快速有效地限制发动机转速，保证发动机不因停喷而反转。而且本发明未增加任何硬件及机械成本，通过发电机控制器GCU4即可实现发动机反转保护功能，保证系统的安全及可靠性，减少了开发周期及开发的成本。
虽然，上文中已经用具体实施方式，对本发明作了详尽的描述，但在本发明基础上，可以对之作一些修改或改进，这对本领域技术人员而言是显而易见的。因此，在不偏离本发明精神的基础上所做的这些修改或改进，均属于本发明要求保护的范围。

Claims (3)

  1. 一种增程器反转保护控制系统，其特征在于，包括发动机、发动机控制器ECU、飞轮集成式发电机、发电机控制器GCU、增程器系统控制器RCU，所述发动机与发动机控制器ECU电连接，所述飞轮集成式发电机与发电机控制器GCU电连接，增程器系统控制器RCU(5)通过CAN总线分别与发动机控制器ECU、发电机控制器GCU电连接。
  2. 一种增程器反转保护控制系统的方法，其特征在于，包括发电机转速监控控制方法，有如下步骤：
    S0：开始启动系统，预先设定飞轮集成式发电机转速标定值；
    S1：发电机控制器GCU监测飞轮集成式发电机转速，监测到飞轮集成式发电机转速是否小于预先设定的标定值，是则进入步骤S2；否则进入步骤S3；
    S2：发电机控制器GCU不响应增程器系统控制器RCU发送的指令，发电机控制器GCU使得飞轮集成式发电机空转，其输出扭矩为0，而后进入步骤S4；
    S3：发电机控制器GCU正常响应增程器系统控制器RCU发送的指令，而后进入步骤S4；
    S4：结束。
  3. 一种增程器反转保护控制系统的方法，其特征在于，还包括发电机转向监控控制方法，有如下步骤：
    步骤200：开始启动系统，预先设定飞轮集成式发电机转速；
    步骤201：发电机控制器GCU监测飞轮集成式发电机转向，监测飞轮集成式发电机转向是否与指令转向不一致，是则进入步骤202，否则进入步骤203；
    步骤202：监测飞轮集成式发电机当前的转速是否大于预先设定的转速，是则进入步骤204，否则进入步骤205；
    步骤203：发电机控制器GCU正常响应增程器系统控制器RCU发送的指令，而后进入步骤206；
    步骤204：发电机控制器GCU不响应增程器控制器RCU指令模式，且发电机控制器GCU使飞轮集成式发电机空转，停止输出扭矩，而后进入步骤206；
    步骤205：发电机控制器GCU正常响应增程器系统控制器RCU发送的指令，而后进入步骤206；
    步骤206：结束。
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