CN113147351A - 一种后挂电pto结构的电驱式拖拉机cvt动力总成 - Google Patents

一种后挂电pto结构的电驱式拖拉机cvt动力总成 Download PDF

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CN113147351A
CN113147351A CN202110363914.4A CN202110363914A CN113147351A CN 113147351 A CN113147351 A CN 113147351A CN 202110363914 A CN202110363914 A CN 202110363914A CN 113147351 A CN113147351 A CN 113147351A
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motor
pto
transmission
generator
electric
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谭贵荣
林志强
黄幼林
赵增亮
董祥欢
陈涛
毛正松
欧阳石坤
王武先
王少尧
陆祖汉
曹少华
谭达辉
刘福平
战强
徐宏雷
杨先恺
李少明
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Guangxi Yuchai Machinery Co Ltd
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Shandong Yuchai Machinery Co ltd
Guangxi Yuchai Machinery Co Ltd
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Priority to CN202110363914.4A priority Critical patent/CN113147351A/zh
Publication of CN113147351A publication Critical patent/CN113147351A/zh
Priority to PCT/CN2021/141241 priority patent/WO2022206059A1/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
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    • 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
    • B60K6/36—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 transmission gearings
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    • 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
    • B60K6/24—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 combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • 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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • 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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
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Abstract

本发明提供一种后挂电PTO结构的电驱式拖拉机CVT动力总成，包括：发动机、发电机、第一电机、第二电机、第三电机、第四电机、PTO电机、PTO传动箱和储能单元；所述第一电机、第二电机、第三电机和第四电机为轮边电机，所述发动机与发电机传动连接，所述发电机为飞轮集成式电机，所述PTO电机与PTO传动箱传动连接用于提供输出动力；所述储能单元分别与第一电机、第二电机、第三电机、第四电机、PTO电机和发电机电连接；本发明提供的后挂电PTO结构的电驱式拖拉机CVT动力总成，利用电机低速大扭矩、转速范围宽的特性，不进行变速箱档位切换，直接使用电机调速，实现了作业过程的无级变速。

Description

一种后挂电PTO结构的电驱式拖拉机CVT动力总成
技术领域
本发明属于传动技术领域，具体涉及一种后挂电PTO结构的电驱式拖拉机CVT动力总成。
背景技术
现有拖拉机传动系统按换挡方式分为手动换挡传动系，动力不间断自动换挡传动系，液压机械无级变速传动系(HMCVT)。
采用手动换挡传动系，拖拉机田间作业时，由于土地阻力变化大，整机负荷变化大，采用手动换挡传动系的拖拉机需要频繁停车换挡，以满足农具作业牵引力及速度要求，员工工作强度大，作业效率低，作业质量不稳定；同时，发动机转速与车辆速度直接相关，整车速度变化导致发动机转速变化范围大，发动机不能工作在一个稳定经济的转速范围内，导致油耗高、排放差、震动磨损大。
采用拖拉机动力不间断自动换挡传动系，指发动机到变速箱的动力不中断的车辆行驶条件下，进行的换挡过程；采用湿式多片离合器作为换挡执行机构，需要挡位变换时，换挡的两个离合器按照控制油压的变化，顺序分开与结合两个离合器，在车辆负载行驶中实现不停车换挡，解决了手动换挡传动系作业时停车换挡的问题，减少了员工作业强度、提高了操控舒适性及作业效率。但存在主要缺点如下：
动力不间断自动换挡传动系发动机转速与车辆速度直接相关，车辆速度变化导致发动机转速变化范围大，发动机不能工作在一个稳定经济的转速范围内，发动机油耗高、排放差、震动磨损大。
拖拉机由于作业要求多，挡位数量多，该种传动系结构需要的离合器数量及比例阀很多，以160马力16挡变速箱为例：全域自动变速箱需要8个离合器8个液压比例阀；由于一致性的原因，该型传动系的换挡性能需在专用出厂试验台上调试标定，随着使用时间的增长，离合器磨损增加，换挡控制时间发生了改变，平顺性变差，产生换挡冲击。
目前，这些系统的技术基本被国外公司掌握并主要依靠进口，该传动系结构复杂、价格高、降价难、维修成本高。由于价格的原因，世界先进国家，动力换挡传动系多应用在80-200Hp拖拉机产品上。
传统动力换挡变速箱，是单功率路线有级式传动，实现超级爬行挡(超低速)，要加很多繁复的减速轮系。并且，不能实现旋耕等主要作业时的无级传动，也就是理论上不能匹配到与旋耕机最佳的行驶速度。
采用液压机械无级变速传动系(HMCVT)，该传动系由液压柱塞变量泵/马达/多排行星机构/湿式离合器及制动器组成，主要优点是：通过行星排对发动机(1)功率分流成两条功率路线，一条是机械功率路线，功率直接传递到变速箱(4)输入轴；一条是液压功率路线，经机-液-机功率转换过程后，与变速箱(4)输入轴实现全部功率的汇流；通过功率分流、汇流原理，实现传动系扭矩、转速按照车辆速度与牵引力要求自动连续变化，保证车辆变速时的牵引力与速度要求。该传动系(HMCVT)实现了车辆传动系无级自动变化，员工操作强度低，操作舒适性好，作业效率、质量高；由于发动机转速、扭矩与整车速度、牵引力完全解耦(不相关)，发动机可以稳定的工作在低油耗区域，震动小、排放好。
该传动系(HMCVT)主要存在如下缺点：
该传动系所采用的高压变量柱塞泵/马达、比例阀等属于精密液压偶件，对装配净洁度、使用清洁度、保养维护清洁度要求非常高，需要专用液压油，使用维护费用高昂；
该系统变速箱采用多排行星机构与湿式离合器或制动器，实现4-6个挡位的区域变换，该系统零件数量多，结构复杂，系统关键技术基本被国外公司掌握，产品主要依靠进口，该传动系成本高、降价难。
该传动系的传动效率低，最大仅能达到80％左右，较其他传动系效率低，燃油经济性较差。
由于价格与使用维护的原因，该系统在中国市场使用量非常少。由于价格的原因，世界先进国家，液压机械无级变速传动系(HMCVT)，多应用在200--400Hp拖拉机产品上。
发明内容
本发明的目的在于提供一种后挂电PTO结构的电驱式拖拉机CVT动力总成，旨在通过动力总成的架构设计实现发动机与车速、PTO传动箱的解耦。
为实现上述技术目的，达到上述技术效果，本发明通过以下技术方案实现：
本发明提供了一种后挂电PTO结构的电驱式拖拉机CVT动力总成，包括：发动机、发电机、第一电机、第二电机、第三电机、第四电机、PTO电机、PTO传动箱和储能单元；所述第一电机、第二电机、第三电机和第四电机为轮边电机，所述第一电机通过传动轴与左前轮传动连接，所述第二电机通过传动轴与右前轮传动连接，所述第三电机通过传动轴与左后轮传动连接，所述第四电机通过传动轴与右后轮传动连接；所述发动机与发电机传动连接，所述发电机为飞轮集成式电机，所述PTO电机与PTO传动箱传动连接用于提供输出动力；所述储能单元分别与第一电机、第二电机、第三电机、第四电机、PTO电机和发电机电连接。
作为本发明的进一步改进，还包括：高压配电盒，所述储能单元与高压配电盒电连接，所述储能单元还通过高压配电盒分别与第一电机、第二电机、第三电机、第四电机、PTO电机和发电机电连接。
作为本发明的进一步改进，还包括：充放电接口，所述充放电接口与高压配电盒电连接。
本发明的优点：
本发明提供的后挂电PTO结构的电驱式拖拉机CVT动力总成，利用电机低速大扭矩、转速范围宽的特性，不进行变速箱档位切换，直接使用电机调速，实现了作业过程的无级变速。电机低速大扭矩和调速范围宽的特性，实现发动机转速和车速解耦，作业效率高。转弯半径小：每一侧车轮单独控制，分时、全时四驱。电机反转，倒车便捷；传动效率高(相对HMCVT)；电池辅助供电，电机短时过载能力，爬坡过坎能力强；电机扭矩大，发动机启动性能好；整车起步快，加速性好；电机低速稳定运行，实现拖拉机超低速爬行；发动机转速和车速解耦，结合能量回收，行驶过程可以实现节油；利用作业过程转弯等负荷小的时候，可以能力回收，实现节油。
附图说明
图1为本发明所述的后挂电PTO结构的电驱式拖拉机CVT动力总成的结构示意图；
图2为本发明所述的后挂电PTO结构的电驱式拖拉机CVT动力总成的电路接线示意图。
图中：101-发动机，102-发电机，103-PTO电机，104-PTO传动箱，105-第一电机，106-左前轮，107-第二电机，108-右前轮，109-左后轮，110-第三电机，111-右后轮，112-第四电机，113-储能单元，114-高压配电盒，115-充放电接口。
具体实施方式
为了使本发明的目的，技术方案及优点更加清楚明白，以下结合附图通过具体实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
本发明的实施例中提供了一种后挂电PTO结构的电驱式拖拉机CVT动力总成，如图1所示，包括：发动机101、发电机102、第一电机105、第二电机107、第三电机110、第四电机112、PTO电机103、PTO传动箱104和储能单元113；第一电机105、第二电机107、第三电机110和第四电机112为轮边电机，示例性的，轮边电机可以采用现有技术(公开号：CN110962581A)中公开的结构；第一电机105通过传动轴与左前轮106传动连接，第二电机107通过传动轴与右前轮108传动连接，第三电机110通过传动轴与左后轮109传动连接，第四电机112通过传动轴与右后轮111传动连接；发动机101与发电机102传动连接用以发电并向储能单元113中存储电能，发动机101与左前轮106、右前轮108、左后轮109、右后轮111以及PTO传动箱104实现传动解耦，从而实现发动机与车速以及PTO的解耦；发电机102采用飞轮集成式电机，示例性的，飞轮集成式电机可以采用现有技术(公开号：CN207573184U)中公开的结构；PTO电机103与PTO传动箱104传动连接用于提供输出动力；储能单元113分别与第一电机105、第二电机107、第三电机110、第四电机112、PTO电机103和发电机102电连接，用于吸收发电机102输送的电能，以及向第一电机105、第二电机107、第三电机110、第四电机112和PTO电机103提供电能。
在一个实施例中，如图2所示，为了更优地组织分配能量，还可以采用高压配电盒114，储能单元113与高压配电盒114电连接，储能单元113还通过高压配电盒114分别与第一电机105、第二电机107、第三电机110、第四电机112、PTO电机103和发电机102电连接，高压配电盒114可以将发电机102转化的电能传输给储能单元113,高压配电盒114还可以将储能单元113的电能分配给第一电机105、第二电机107、第三电机110、第四电机112和PTO电机103；本实施例中的高压配电盒114可以采用现有市售产品也可以采用现有技术(公开号：CN108657088A)中公开的装置。
在一个实施例中，请继续参考图2，为了更优地进行充放电，还可以装配充放电接口115，充放电接口115与高压配电盒114电连接，通过充放电接口115可以实现对外设充电，也可以实现对储能单元113进行充电。
本说明书中针对“一些实施例”、“一个实施例”、或“实施例”等的参考指代的是结合实施例所描述的特定特征、结构、或性质包括在至少一个实施例中。因此，短语“在一些实施例中”、“在一个实施例中”、或“在实施例中”等在整个说明书中各地方的出现并非必须指代相同的实施例。此外，特定特征、结构、或性质可以在一个或多个实施例中以任何合适方式组合。因此，结合一个实施例中所示出或描述的特定特征、结构或性质可以整体地或部分地与一个或多个其他实施例的特征、结构、或性质无限制地组合，只要该组合不是非逻辑性的或不能工作。另外，本申请附图中的各个元素仅仅为了示意说明，并非按比例绘制。
由此描述了本发明的至少一个实施例的几个方面，可以理解，对本领域技术人员来说容易地进行各种改变、修改和改进。这种改变、修改和改进意于在本发明的精神和范围内。

Claims (3)

1.一种后挂电PTO结构的电驱式拖拉机CVT动力总成，其特征在于，包括：发动机、发电机、第一电机、第二电机、第三电机、第四电机、PTO电机、PTO传动箱和储能单元；所述第一电机、第二电机、第三电机和第四电机为轮边电机，所述第一电机通过传动轴与左前轮传动连接，所述第二电机通过传动轴与右前轮传动连接，所述第三电机通过传动轴与左后轮传动连接，所述第四电机通过传动轴与右后轮传动连接；所述发动机与发电机传动连接，所述发电机为飞轮集成式电机，所述PTO电机与PTO传动箱传动连接用于提供输出动力；所述储能单元分别与第一电机、第二电机、第三电机、第四电机、PTO电机和发电机电连接。
2.如权利要求1所述的后挂电PTO结构的电驱式拖拉机CVT动力总成，其特征在于，还包括：高压配电盒，所述储能单元与高压配电盒电连接，所述储能单元还通过高压配电盒分别与第一电机、第二电机、第三电机、第四电机、PTO电机和发电机电连接。
3.如权利要求2所述的后挂电PTO结构的电驱式拖拉机CVT动力总成，其特征在于，还包括：充放电接口，所述充放电接口与高压配电盒电连接。
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