CN111391644A - 一种插电式混合动力系统的控制方法 - Google Patents

一种插电式混合动力系统的控制方法 Download PDF

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CN111391644A
CN111391644A CN202010319986.4A CN202010319986A CN111391644A CN 111391644 A CN111391644 A CN 111391644A CN 202010319986 A CN202010319986 A CN 202010319986A CN 111391644 A CN111391644 A CN 111391644A
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driving motor
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马世友
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Jiangsu Saleen Automotive Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/26Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60K6/00Arrangement 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
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    • B60K6/22Arrangement 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
    • B60K6/28Arrangement 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 electric energy storing means, e.g. batteries or capacitors
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/36Arrangement 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 transmission gearings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/40Arrangement 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 assembly or relative disposition of components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/42Arrangement 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 the architecture of the hybrid electric vehicle
    • 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
    • B60L7/00Electrodynamic brake systems for vehicles in general
    • B60L7/10Dynamic electric regenerative braking

Abstract

本发明涉及一种插电式混合动力系统的控制方法,当电池包的电池SOC值高于第一阈值时,如果车速低于或等于第二阈值时,电池包为驱动电机提供动力,进入纯电动模式;如果车速高于第二阈值时,进入混合模式;当电池包的电池SOC值低于或等于第一阈值时,如果发动机的发电量小于汽车驱动所需的能量,进入混合模式;如果发动机的发电量大于汽车驱动所需的能量,进入发动机模式,并且发动机在制动时产生多余力矩通过产生感应电流向电池包进行充电。本发明具有如下优点:保证发电机在高效发电区间内实现最优最稳定状态下的发电,在三种模式下,能量均传递至驱动电机,再驱动前轮转动,能量在驱动电机处释放并存储,在经济性以及动力性方面取得有益效果。

Description

一种插电式混合动力系统的控制方法
技术领域:
本发明属于汽车动力领域,具体涉及一种插电式混合动力系统的控制方法。
背景技术:
目前纯电动汽车由于无法解决续航里程以及电池成本较高等问题,市场在没有政府补贴的情况下接受度较低,针对以上续航里程的问题,目前出现了混合动力汽车和增程式电动汽车。混合动力汽车的工作原理是使用燃油发动机直接驱动车辆,并将多余的能量进行发电并进行存储,存储的电量能在车辆低速行驶时候通过驱动电机驱动车辆行驶。但是该种结构设计必须加装变速箱才能实现其混动的功能。因为变速箱由变速箱壳体、中间轴、倒挡轴、行星齿轮齿轮、轴承、操纵机构等机件构成,体积较大,结构复杂,制造成本高,不利于汽车降成本和轻量化设计理念。
如专利号201510164818.1一种插电式混合动力系统的控制方法,如图2所示,其中插电式混合动力系统包括安装在第一轴(1)的发动机(10)和变速箱(20)、安装在第二轴(2)的电机(30)、差减机构以及动力电池(60),差减机构包括变速箱以及差速器(50),该动力系统在布置时必须将变速箱(20)的输入轴(21)与发动机(10)的输出轴(11)同轴相连,对于机舱布置具有一定局限性,该专利为实现结构紧凑性而取消现有在发动机与变速箱之间的电机, 而使用第二轴(2)的电机(30)实现混合驱动,这样发动机动力系统和电机动力系统在动力提供转换过程中能量无法实现有效耦合,会造成发动机能量的浪费。
其次,该专利的安装在第一轴(1)的发动机(10)和变速箱(20)、安装在第二轴(2)的电机(30)和差减机构,为提供电池动力形成两个独立的模式,两者结构体积较大,且无法实现集成,整个动力系统在动力提供转换过程中能量无法实现有效存储,在能量分别向变速箱(20)以及差减机构传递时,多余的能量被消耗掉。
再如,专利号2017103742454一种增程式混合动力系统,如图3所示,该专利中ISG电机(2)是发电机与发动机(3)同轴布置。但是发动机经济油耗运转转速一般在2000-3000rmp,发电机高效发电的转速是发动机的约2-2.5倍,而在将发电机与发动机同轴连接,是无法保证发动机在油耗较低的情况下发电机在高效的工作的工作区间,也即无法达到最优的动力效果。
因此现有强混的插电式混合动力系统和增程式混合动力系统无论从布置结构上还是能量传递的控制方法方面,均存在不足之处。
发明内容:
本发明的目的是为了克服以上的不足,提供一种插电式混合动力系统的控制方法,保证发电机在高效发电区间内实现最优最稳定状态下的发电,在纯电动模式、混合模式以及发动机模式下,能量均传递至驱动电机,再驱动前轮转动,能量在驱动电机处释放,在经济性以及动力性方面取得有益效果。
本发明的目的通过以下技术方案来实现:一种插电式混合动力系统的控制方法,插电式混合动力系统包括发动机、电池包、油箱以及驱动传动部件,发动机与油箱连通,驱动传动部件包括传动壳体以及置于传动壳体内的发电机、驱动电机、差速器,发电机与发动机通过一对减速齿轮实现非同轴式连接,发电机与驱动电机连接,驱动电机通过一对主减速齿轮与差速器连接,差速器通过一驱动轴与汽车前轮连接,电池包分别与发电机、驱动电机连接;
插电式混合动力系统的控制方法,包括
当电池包的电池SOC值高于第一阈值时,如果车速低于或等于第二阈值时,电池包为驱动电机提供动力,进入纯电动模式;如果车速高于第二阈值时,发动机启动,发动机将动力传递到发电机,此时发电机与电池包共同为驱动电机提供动力,进入混合模式;
当电池包的电池SOC值低于或等于第一阈值时,如果发动机的发电量小于汽车驱动所需的能量,发动机将动力传递到发电机,发电机与电池包共同为驱动电机提供动力,进入混合模式;如果发动机的发电量大于汽车驱动所需的能量,则发动机将动力提供到发电机,发电机为驱动电机提供动力,进入发动机模式,并且发动机通过发电机产生多余的电量向电池包进行充电;
当前轮处于制动状态下时,驱动电机将制动的机械能量转换为电能,向电池包进行充电。
本发明的进一步改进在于:纯电动模式具体包括,
发动机不工作,电池包将能量流通过驱动电机依次传动给主减速齿轮和差速器,差速器将动力通过驱动轴驱动前轮转动。
本发明的进一步改进在于:混合模式具体包括,
发动机与电池包均为驱动电机提供动力,驱动电机的一部分动力通过发动机运转,且能量流依次经过减速齿轮、发电机至驱动电机,而驱动电机的另一部分动力通过电池包将能量源传递至驱动电机,驱动电机将得到的能量依次传递给主减速齿轮和差速器,差速器将动力通过驱动轴驱动前轮转动。
本发明的进一步改进在于:发动机模式具体包括,
发动机工作,电池包不工作,动力从发动机依次经过减速齿轮、发电机传递至驱动电机,驱动电机将动力依次通过主减速齿轮和差速器传递至驱动轴来实现驱动前轮转动。
本发明的进一步改进在于:发动机的曲轴的输出端a与一减速齿轮连接,发电机的输入端a与另一减速齿轮连接,一对减速齿轮相互啮合实现传动,发动机运转时将动力依次通过曲轴的输出端a、发电机的输入端a至发电机。
本发明的进一步改进在于:驱动电机的输出端b与一主减速齿轮连接,差速器的输入端b与另一主减速齿轮连接,一对主减速齿轮相互啮合实现传动,差速器通过驱动轴与汽车前轮连接,驱动电机得到的动力依次通过驱动电机的输出端b、主减速齿轮、差速器的输入端b至驱动轴最终驱动前轮转动。
本发明的进一步改进在于:发电机与驱动电机之间、电池包与发电机之间以及电池包与驱动电机之间均通过电控模块实现连接。
本发明的进一步改进在于:传动壳体与发动机连接后整体式布置在汽车机舱内。
本发明的进一步改进在于:发电机、驱动电机与差速器上下空间布置。
本发明与现有技术相比具有以下优点:
1、本发明取消原有的变速箱,增设发电机以及驱动电机,发动机与发电机实现非同轴式连接,发动机在同等转速下使发电机为驱动电机提供较好的动力,保证发电机在高效发电区间内实现最优最稳定状态下的发电,同时取消原有结构复杂的变速箱,在结构紧凑以及装配上同样取得有益效果。
2、该设计使发动机、发电机以及驱动电机在结构上实现高度集成化,提高结构紧凑性,在纯电动模式、混合模式以及发动机模式下,能量均传递至驱动电机,再驱动前轮转动,能量在驱动电机处释放,多余的能量给电池包充电,在经济性以及动力性方面取得有益效果;重要的是,当汽车在制动状态下,驱动电机将制动的机械能量转换为电能,最终给电池包充电,实现能量回收,在三种模式下,大大提高了能量的利用率,避免任何情况下能量的浪费。
附图说明:
图1为本发明一种插电式混合动力系统的控制方法的结构框架图。
图2为现有强插电式混合动力系统的的结构框架图。
图3为现有增程式混合动力系统的结构框架图。
图中标号:1-发动机、2-减速齿轮、3-发电机、4-驱动电机、5-传动壳体、6-差速器、7-驱动轴、8-前轮、9-电池包、10-油箱、11-主减速齿轮、12-输入端a、14-输出端b、15-输入端b。
具体实施方式:
为了加深对本发明的理解,下面将结合实施例和附图对本发明作进一步详述,该实施例仅用于解释本发明,并不构成对本发明保护范围的限定。
如图1示出了本发明一种插电式混合动力系统的控制方法的一种实施方式,插电式混合动力系统包括发动机1、电池包9、油箱10以及驱动传动部件,发动机1与油箱10连通,驱动传动部件包括传动壳体5以及置于传动壳体5内的发电机3、驱动电机4、差速器6,发电机3与发动机1通过一对减速齿轮2实现非同轴式连接,发电机3与驱动电机4连接,驱动电机4通过一对主减速齿轮11与差速器6连接,差速器6通过一驱动轴7与汽车前轮8连接,电池包9分别与发电机3、驱动电机4连接;
插电式混合动力系统的控制方法,包括
当电池包9的电池SOC值高于第一阈值时,如果车速低于或等于第二阈值时,电池包9为驱动电机4提供动力,进入纯电动模式;如果车速高于第二阈值时,发动机启动,发动机1将动力传递到发电机3,此时发电机3与电池包9共同为驱动电机4提供动力,进入混合模式;
当电池包9的电池SOC值低于或等于第一阈值时,如果发动机1的发电量小于汽车驱动所需的能量,发动机1将动力传递到发电机3,发电机3与电池包9共同为驱动电机4提供动力,进入混合模式;如果发动机1的发电量大于汽车驱动所需的能量,则发动机1将动力提供到发电机3,发电机3为驱动电机4提供动力,进入发动机模式,并且发动机1通过发电机3产生多余的电量向电池包9进行充电;
当前轮8处于制动状态下时,驱动电机4将制动的机械能量转换为电能,向电池包9进行充电。
具体的,纯电动模式具体包括,
发动机1不工作,电池包9将能量流通过驱动电机4依次传动给主减速齿轮11和差速器6,差速器6将动力通过驱动轴7驱动前轮8转动。
具体的,混合模式具体包括,
发动机1与电池包9均为驱动电机4提供动力,驱动电机4的一部分动力通过发动机1运转,且能量流依次经过减速齿轮2、发电机3至驱动电机4,而驱动电机4的另一部分动力通过电池包9将能量源传递至驱动电机4,驱动电机4将得到的能量传递给主减速齿轮11和差速器6,差速器6将动力通过驱动轴7驱动前轮8转动。
具体的,发动机模式具体包括,
发动机1工作,电池包9不工作,动力从发动机1依次经过减速齿轮2、发电机3传递至驱动电机4,驱动电机4将动力依次通过主减速齿轮11和差速器6传递至驱动轴7来实现驱动前轮8转动。
本发明取消原有的变速箱,增设发电机3以及驱动电机4,发动机1与发电机3实现非同轴式连接,发动机1在同等转速下使发电机3为驱动电机4提供较好的动力,保证发电机3在高效发电区间内实现最优最稳定状态下的发电,同时取消结构复杂的变速箱,在结构紧凑以及装配上同样取得有益效果。
该设计使发动机1、发电机3以及驱动电机4在结构上实现高度集成化,提高结构紧凑性,在纯电动模式、混合模式以及发动机模式下,能量均传递至驱动电机4,再驱动前轮8转动,能量在驱动电机4处释放,多余的能量给电池包9充电,在经济性以及动力性方面取得有益效果;重要的是,当汽车在制动状态下,驱动电机4将制动的机械能量转换为电能,向电池包9进行充电,实现能量回收,在三种模式下,大大提高了能量的利用率,避免任何情况下能量的浪费。
其中,第一阈值用于判断电池包9的电池SOC值的高低,第二阈值用于判断车速的高低,对于第一阈值以及第二阈值根据具体的车辆需求自由设定。
发动机1的曲轴的输出端a12与一减速齿轮2连接,发电机3的输入端a13与另一减速齿轮2连接,一对减速齿轮2相互啮合实现传动,发动机1运转时将动力依次通过曲轴的输出端a12、发电机3的输入端a13至发电机3。发动机1与发电机3为非同轴布置,为使两者均在高效区间内工作,在发动机1与发电机3之间增加一对减速齿轮2,而减速齿轮2的减速比根据不同发动机和发电机的高效区间转速来设定。
驱动电机4的输出端b14与一主减速齿轮11连接,差速器6的输入端b15与另一主减速齿轮11连接,一对主减速齿轮11相互啮合实现传动,差速器6通过驱动轴7与汽车前轮8连接,驱动电机4得到的动力依次通过驱动电机4的输出端b14、主减速齿轮11、差速器6的输入端b15至驱动轴7,最终驱动前轮8转动。
发电机3与驱动电机4之间、电池包9与发电机3之间以及电池包9与驱动电机4之间均通过电控模块实现连接。
传动壳体5与发动机1连接后整体式布置在汽车机舱内,将减速齿轮2、发电机3、驱动电机4、主减速齿轮11、差速器6集成在传动壳体5内,传动壳体5与发动机1连接后,集成布置在机舱内,集成度高,结构紧凑,易于实现布置和工业化。
发电机3、驱动电机4与差速器6上下空间布置,集成度和空间利用率高,易于布置。
本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (9)

1.一种插电式混合动力系统的控制方法,其特征在于:所述插电式混合动力系统包括发动机(1)、电池包(9)、油箱(10)以及驱动传动部件,所述发动机(1)与油箱(10)连通,所述驱动传动部件包括传动壳体(5)以及置于传动壳体(5)内的发电机(3)、驱动电机(4)、差速器(6),所述发电机(3)与发动机(1)通过一对减速齿轮(2)实现非同轴式连接,所述发电机(3)与驱动电机(4)连接,所述驱动电机(4)通过一对主减速齿轮(11)与差速器(6)连接,所述差速器(6)通过一驱动轴(7)与汽车前轮(8)连接,所述电池包(9)分别与发电机(3)、驱动电机(4)连接;
所述插电式混合动力系统的控制方法,包括
当电池包(9)的电池SOC值高于第一阈值时,如果车速低于或等于第二阈值时,电池包(9)为驱动电机(4)提供动力,进入纯电动模式;如果车速高于第二阈值时,发动机启动,发动机(1)将动力传递到发电机(3),此时发电机(3)与电池包(9)共同为驱动电机(4)提供动力,进入混合模式;
当电池包(9)的电池SOC值低于或等于第一阈值时,如果发动机(1)的发电量小于汽车驱动所需的能量,发动机(1)将动力传递到发电机(3),发电机(3)与电池包(9)共同为驱动电机(4)提供动力,进入混合模式;如果发动机(1)的发电量大于汽车驱动所需的能量,则发动机(1)将动力提供到发电机(3),发电机(3)为驱动电机(4)提供动力,进入发动机模式,并且发动机(1)通过发电机(3)产生多余的电量向电池包(9)进行充电;
当前轮(8)处于制动状态下时,驱动电机(4)将制动的机械能量转换为电能,向电池包(9)进行充电。
2.根据权利要求1所述一种插电式混合动力系统的控制方法,其特征在于:所述纯电动模式具体包括,
所述发动机(1)不工作,电池包(9)将能量流通过驱动电机(4)依次传动给主减速齿轮(11)和差速器(6),所述差速器(6)将动力通过驱动轴(7) 驱动前轮(8)转动。
3.根据权利要求1所述一种插电式混合动力系统的控制方法,其特征在于:所述混合模式具体包括,
所述发动机(1)与电池包(9)均为驱动电机(4)提供动力,所述驱动电机(4)的一部分动力通过发动机(1)运转,且能量流依次经过减速齿轮(2)、发电机(3)至驱动电机(4),而驱动电机(4)的另一部分动力通过电池包(9)将能量源传递至驱动电机(4),驱动电机(4)将得到的能量依次传递给主减速齿轮(11)和差速器(6),差速器(6)将动力通过驱动轴(7)驱动前轮(8)转动。
4.根据权利要求1所述一种插电式混合动力系统的控制方法,其特征在于:所述发动机模式具体包括,
所述发动机(1)工作,电池包(9)不工作,动力从发动机(1)依次经过减速齿轮(2)、发电机(3)传递至驱动电机(4),驱动电机(4)将动力依次通过主减速齿轮(11)和差速器(6)传递至驱动轴(7)来实现驱动前轮(8)转动。
5.根据权利要求1-4任一项所述一种插电式混合动力系统的控制方法,其特征在于:所述发动机(1)的曲轴的输出端a(12)与一减速齿轮(2)连接,所述发电机(3)的输入端a(13)与另一减速齿轮(2)连接,所述一对减速齿轮(2)相互啮合实现传动,发动机(1)运转时将动力依次通过曲轴的输出端a(12)、发电机(3)的输入端a(13)至发电机(3)。
6.根据权利要求1-4任一项所述一种插电式混合动力系统的控制方法,其特征在于:所述驱动电机(4)的输出端b(14)与一主减速齿轮(11)连接,所述差速器(6)的输入端b(15)与另一主减速齿轮(11)连接,所述一对主减速齿轮(11)相互啮合实现传动,所述差速器(6)通过驱动轴(7)与汽车前轮(8)连接,所述驱动电机(4)得到的动力依次通过驱动电机(4)的输出端b(14)、主减速齿轮(11)、差速器(6)的输入端b(15)至驱动轴(7),最终驱动前轮(8)转动。
7.根据权利要求1至4所述一种插电式混合动力系统的控制方法,其特征在于:所述发电机(3)与驱动电机(4)之间、电池包(9)与发电机(3)之间以及电池包(9)与驱动电机(4)之间均通过电控模块实现连接。
8.根据权利要求1所述一种插电式混合动力系统的控制方法,其特征在于:所述传动壳体(5)与发动机(1)连接后整体式布置在汽车机舱内。
9.根据权利要求1所述一种插电式混合动力系统的控制方法,其特征在于:所述发电机(3)、驱动电机(4)与差速器(6)上下空间布置。
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