CN116513157A - 混动汽车发动机启动控制方法 - Google Patents

混动汽车发动机启动控制方法 Download PDF

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CN116513157A
CN116513157A CN202310551871.1A CN202310551871A CN116513157A CN 116513157 A CN116513157 A CN 116513157A CN 202310551871 A CN202310551871 A CN 202310551871A CN 116513157 A CN116513157 A CN 116513157A
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engine
voltage
low
starting
started
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李创举
王涛
耿超
王铭
张浩玉
朱荣翠
罗世成
姚学森
孙强
岳彩收
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Anhui Jianghuai Automobile Group Corp
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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
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the 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
    • 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
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • 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
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • 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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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

本发明公开了一种混动汽车发动机启动控制方法，本发明的主要设计构思在于，增设由整车控制器控制并由蓄电池供电的低压起动机，可以在高压动力电池电量不足无法启动发动机时，采用低压起动机首次启动车辆。具体地，当整车控制器接收到启动信号且触发启动发动机的请求时，判断是否该点火循环首次启动，如果是首次启动，读取高压动力电池反馈的SOC信息，当SOC高于与预设限值时，可向高压电动机发送启动信号，经由高压电动机启动发动机；而当高压动力电池的SOC低于预设限值时，则向低压起动机发送启动信号，通过低压起动机来启动发动机。本发明有效解决了因故障或其他因素造成高压动力电池电量过低而无法启动发动机的问题。

Description

混动汽车发动机启动控制方法
技术领域
本发明涉及混动汽车控制技术领域，尤其涉及一种混动汽车发动机启动控制方法。
背景技术
随着汽车行业的发展，混动汽车成为汽车技术的一种重要发展方向，混动汽车的主要启动方式是通过高压动力电池驱动高压电动机对车辆进行启动。在车辆的使用过程中，因故障或其他因素，当高压动力电池的电量过低，动力电池的能量不足以驱动高压电动机启动时，车辆将无法启动。
对于不可外接充电的HEV混动汽车，此时动力电池没有可外接充电的方式，电池电量无法补充，车辆无法启动。如果采用低压起动机进行启动，低压启动机的功率较低，无法满足行驶中混动车型启动性能要求，且低压起动机的寿命不足；如果采用首次启动使用低压启动机，而行驶中切换为高压电动机进行启动，因低压起动机的功率比高压电动机小，当高压动力电池电量充足时，采用低压起动机工作，整车NVH性能会明显下降。
发明内容
鉴于上述，本发明旨在提供一种混动汽车发动机启动控制方法，以解决因故障或其他因素造成高压动力电池电量过低而无法启动发动机的问题。
本发明采用的技术方案如下：
本发明提供了一种混动汽车发动机启动控制方法，其中包括：
整车控制器在接收到车辆启动请求后进入允许行驶模式；
判断本次点火循环是否为首次启动；
在确定为首次启动后，获取高压动力电池的SOC；
根据SOC与预设的电量阈值的比对关系，决策由高压电动机或低压起动机启动发动机。
在其中至少一种可能的实现方式中，所述根据SOC与预设的电量阈值的比对关系，决策由高压电动机或低压起动机启动发动机包括：
当SOC大于或等于所述电量阈值时，触发高压电动机启动发动机；
当SOC小于所述电量阈值时，触发低压起动机启动发动机。
在其中至少一种可能的实现方式中，所述混动汽车发动机启动控制方法还包括：在启动发动机之前判断发动机是否存在禁止启动的故障，仅当不存在禁止启动的故障时，触发高压电动机或低压起动机启动发动机。
在其中至少一种可能的实现方式中，当整车控制器判断本次点火循环非首次启动时，则直接触发高压电动机启动发动机。
在其中至少一种可能的实现方式中，在判断本次点火循环是否为首次启动之前，可以基于允许行驶模式判定是否需要启动发动机。
在其中至少一种可能的实现方式中，所述低压起动机由车载的蓄电池供电。
与现有技术相比，本发明的主要设计构思在于，增设由整车控制器控制并由蓄电池供电的低压起动机，可以在高压动力电池电量不足无法启动发动机时，采用低压起动机首次启动车辆。具体地，当整车控制器接收到启动信号，表征车辆进入可行驶状态，整车控制器触发启动发动机的请求时，同步判断是否该点火循环首次启动，如果是首次启动，读取高压动力电池反馈的SOC信息，当高压动力电池的SOC高于与预设限值时，可在进一步判定发动机系统无禁止启动的故障后，向高压电动机发送启动信号，经由高压电动机启动发动机；而当高压动力电池的SOC低于预设限值时，并判定发动机系统无禁止启动的故障后，向低压起动机发送启动信号，通过由低压蓄电池供电的低压起动机来启动发动机。本发明有效解决了因故障或其他因素造成高压动力电池电量过低而无法启动发动机的问题。
附图说明
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步描述，其中：
图1为本发明实施例提供的混动汽车发动机启动控制方法的流程示意图。
具体实施方式
下面详细描述本发明的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能解释为对本发明的限制。
本发明提出了一种混动汽车发动机启动控制方法的实施例，具体来说，如图1所示，其中包括：
步骤S1、整车控制器在接收到车辆启动请求后进入允许行驶模式；
步骤S2、判断本次点火循环是否为首次启动；
步骤S3、在确定为首次启动后，获取高压动力电池的SOC；
步骤S4、根据SOC与预设的电量阈值的比对关系，决策由高压电动机或低压起动机启动发动机。
具体来说，所述根据SOC与预设的电量阈值的比对关系，决策由高压电动机或低压起动机启动发动机包括：
当SOC大于或等于所述电量阈值时，触发高压电动机启动发动机；
当SOC小于所述电量阈值时，触发低压起动机启动发动机。
这里还可以展开的是，在启动发动机之前需进一步判断发动机是否存在禁止启动的故障，只有当不存在禁止启动的故障时，才允许由高压电动机或低压起动机启动发动机。
此外，当整车控制器判断本次点火循环非首次启动时，则直接触发高压电动机启动发动机。
最后还可以补充的是，一方面、在判断本次点火循环是否为首次启动之前，可以基于允许行驶模式判定是否需要启动发动机；另一方面、前述的低压起动机由车载的蓄电池供电。
综上所述，本发明的主要设计构思在于，增设由整车控制器控制并由蓄电池供电的低压起动机，可以在高压动力电池电量不足无法启动发动机时，采用低压起动机首次启动车辆。具体地，当整车控制器接收到启动信号，表征车辆进入可行驶状态，整车控制器触发启动发动机的请求时，同步判断是否该点火循环首次启动，如果是首次启动，读取高压动力电池反馈的SOC信息，当高压动力电池的SOC高于与预设限值时，可在进一步判定发动机系统无禁止启动的故障后，向高压电动机发送启动信号，经由高压电动机启动发动机；而当高压动力电池的SOC低于预设限值时，并判定发动机系统无禁止启动的故障后，向低压起动机发送启动信号，通过由低压蓄电池供电的低压起动机来启动发动机。本发明有效解决了因故障或其他因素造成高压动力电池电量过低而无法启动发动机的问题。
本发明实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示单独存在A、同时存在A和B、单独存在B的情况。其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项”及其类似表达，是指的这些项中的任意组合，包括单项或复数项的任意组合。例如，a，b和c中的至少一项可以表示：a，b，c，a和b，a和c，b和c或a和b和c，其中a，b，c可以是单个，也可以是多个。
以上依据图式所示的实施例详细说明了本发明的构造、特征及作用效果，但以上仅为本发明的较佳实施例，需要言明的是，上述实施例及其优选方式所涉及的技术特征，本领域技术人员可以在不脱离、不改变本发明的设计思路以及技术效果的前提下，合理地组合搭配成多种等效方案；因此，本发明不以图面所示限定实施范围，凡是依照本发明的构想所作的改变，或修改为等同变化的等效实施例，仍未超出说明书与图示所涵盖的精神时，均应在本发明的保护范围内。

Claims (6)

1.一种混动汽车发动机启动控制方法，其特征在于，包括：
整车控制器在接收到车辆启动请求后进入允许行驶模式；
判断本次点火循环是否为首次启动；
在确定为首次启动后，获取高压动力电池的SOC；
根据SOC与预设的电量阈值的比对关系，决策由高压电动机或低压起动机启动发动机。
2.根据权利要求1所述的混动汽车发动机启动控制方法，其特征在于，所述根据SOC与预设的电量阈值的比对关系，决策由高压电动机或低压起动机启动发动机包括：
当SOC大于或等于所述电量阈值时，触发高压电动机启动发动机；
当SOC小于所述电量阈值时，触发低压起动机启动发动机。
3.根据权利要求1所述的混动汽车发动机启动控制方法，其特征在于，所述混动汽车发动机启动控制方法还包括：在启动发动机之前判断发动机是否存在禁止启动的故障，仅当不存在禁止启动的故障时，触发高压电动机或低压起动机启动发动机。
4.根据权利要求1所述的混动汽车发动机启动控制方法，其特征在于，当整车控制器判断本次点火循环非首次启动时，则直接触发高压电动机启动发动机。
5.根据权利要求1～4任一项所述的混动汽车发动机启动控制方法，其特征在于，在判断本次点火循环是否为首次启动之前，可以基于允许行驶模式判定是否需要启动发动机。
6.根据权利要求1～4任一项所述的混动汽车发动机启动控制方法，其特征在于，所述低压起动机由车载的蓄电池供电。
CN202310551871.1A 2023-05-15 2023-05-15 混动汽车发动机启动控制方法 Pending CN116513157A (zh)

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