CN106394226B - 大功率车辆的混合动力变速箱 - Google Patents

大功率车辆的混合动力变速箱 Download PDF

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CN106394226B
CN106394226B CN201610831751.7A CN201610831751A CN106394226B CN 106394226 B CN106394226 B CN 106394226B CN 201610831751 A CN201610831751 A CN 201610831751A CN 106394226 B CN106394226 B CN 106394226B
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CN106394226A (zh
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张文明
杨威威
赵鑫鑫
杨耀东
谭森起
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University of Science and Technology Beijing USTB
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    • 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
    • B60K6/36—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
    • B60K6/365—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 with the gears having orbital motion
    • 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
    • B60K6/40—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 assembly or relative disposition of components
    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • 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

Abstract

本发明提供一种大功率车辆的混合动力变速箱，属于动力传动技术领域。该变速箱包括发动机、2个电动机、2组行星排、2个离合器、1个制动器和液压控制系统。电动机M2工作，实现低速爬坡、高速巡航和倒挡；发动机工作、电动机M1参与调速，实现混动或电传动；闭合离合器C1，发动机和电动机M1、M2同时驱动车辆，满足车辆瞬时大扭矩的需求；若电动机M1出现故障，闭合离合器C1，改为发动机直驱，实现车辆跛行回家；电动机M2反转，实现车辆倒车功能；车辆需要制动时，电动机M2或M2和M1发电可实现能量回收。本发明可实现动力换挡，整体形式简单，双电机同侧布置，结构紧凑，承载能力大，传动效率高，能在很大程度上改善车辆动力性能，提高燃油经济性。

Description

大功率车辆的混合动力变速箱
技术领域
本发明涉及动力传动技术领域，特别是指一种大功率车辆的混合动力变速箱。
背景技术
目前能源短缺已成为全球面临的一个重要问题，而混合动力技术能有效改善车辆低速动力输出和燃油消耗，已成为汽车工业的发展方向。大功率车辆(如大巴、商用车、重型矿用自卸车等功率超过200KW以上的)在工作时，经常在低速、启停工况下工作；在该工况下，可以用电动机驱动，避免发动机在低转速下工作；在减速工况下，电动机能实现制动能量回收。
在混合动力变速箱的设计文献资料中，还未发现有适用于大功率车辆的混合动力变速箱，此混合动力变速箱能在很大程度上提高车辆的燃油经济性。
发明内容
本发明为提高大功率车辆的燃油经济性，提升车辆动力性能，提供一种大功率车辆的混合动力变速箱。
该变速箱包括发动机、电动机M1、电动机M2、行星排P1、行星排P2、离合器C1、离合器C2、制动器B2和液压控制系统，液压控制系统对变速箱提供液压控制；
其中，行星排P1包括P1排太阳轮、P1排行星轮、P1排行星架和P1排齿圈，P1排行星架与发动机相连，P1排太阳轮与电动机M1相连，或P1排太阳轮通过离合器C1与电动机M2和P1排齿圈相连；行星排P2包括P2排太阳轮、P2排行星轮、P2排行星架和P2排齿圈，P2排行星架作为输出轴，P2排太阳轮经过P1排齿圈与电动机M2相连，P2排齿圈经过离合器C2与P2排太阳轮相连，或P2排齿圈与制动器B2连接；
发动机、电动机M1、电动机M2和P2排行星架同轴输入、输出；
电动机M1、电动机M2集成在行星排P1和行星排P2的同一侧。
电动机M2单独发电或电动机M1、电动机M2同时发电；离合器C1只用于电动机M1故障和车辆需要瞬时大扭矩的工况。
该变速箱在使用过程中，分为纯电模式一档、纯电模式二挡、混动模式低速、混动模式高速、电传动模式一档、电传动模式二挡和跛行模式；
当为纯电模式一挡时，电动机M2动力输出，离合器C2断开、制动器B2结合、离合器C1断开，行星齿轮机构传动比为3.82，输出轴转速在电动机M2转速范围内实现连续变化；
当为纯电模式二挡时，电动机M2动力输出，离合器C2结合、制动器B2断开、离合器C1断开，行星齿轮机构传动比为1，输出轴转速在电动机M2转速范围内实现连续变化；
当为混动模式低速时，发动机和电动机M1工作，离合器C1断开、离合器C2断开、制动器B2结合；
当为混动模式高速时，发动机和电动机M1工作，离合器C1断开、离合器C2结合、制动器B2断开；
当为电传动模式一挡时，发动机和电动机M1、电动机M2工作，离合器C2断开、制动器B2结合、离合器C1断开，传动比为3.82；
当为电传动模式二挡时，发动机和电动机M1、电动机M2工作，离合器C2结合、制动器B2断开、离合器C1断开，传动比为1；
当为跛行模式时，在电动机M1故障时，离合器C1结合，此时为发动机直驱模式，实现车辆跛行回家。
发动机和电动机M2能共同工作，能提供更大的扭矩，并通过电动机M1调节发动机转速，使发动机一直工作在最佳燃油经济区。电动机M1主要用于发电以及发动机调速，用于混动和电传动模式。
车辆倒挡行驶时，电动机M2反转，离合器C1断开、制动器B2结合、离合器C2断开。
当车辆需要制动时，制动器B2闭合，电动机M2发电或电动机M2和电动机M1同时发电，实现能量回收。
本发明电动机M2工作时，经离合器或制动器连接，可实现3种工作模式：低速爬坡、高速巡航和倒挡；发动机和电动机共同工作时，可以提供更大的扭矩，更广的调速范围且能一直让发动机工作在最佳燃油经济区。
本发明的上述技术方案的有益效果如下：
一是集成化程度高，两个电动机放在行星排P1、P2的同一侧，使整体结构形式简单、紧凑，可靠性高，且提供倒挡功能；二是可实现混联形式的混合动力技术，在低速及启动工况下，可以用电机驱动，提高了车辆的燃油经济性；需要大扭矩工况下可以实现混合驱动，减速工况下实现能量回收；三是所述变速箱中离合器C1的存在，一可提高车辆的通过性、二可实现车辆跛行回家。
附图说明
图1为本发明的大功率车辆的混合动力变速箱结构示意图；
图2为本发明的混合动力变速箱电动机M2工作在1挡时的功率流图；
图3为本发明的混合动力变速箱混动模式高速时的功率流图；
图4为本发明的混合动力变速箱电传动模式一挡时的功率流图；
图5为本发明的混合动力变速箱发动机直驱高速时的功率流图。
其中：
1-发动机；2-电动机M1；3-离合器C1；4-电动机M2；5-P1排齿圈；6-离合器C2；7-制动器B2；8-P2排齿圈；9-P2排行星架；10-P2排太阳轮；11-P1排行星架；12-P1排太阳轮。
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
本发明为提高大功率车辆的燃油经济性，提升车辆动力性能，提供一种大功率车辆的混合动力变速箱。
如图1所示，该变速箱包括发动机1、电动机M12、电动机M24、行星排P1、行星排P2、离合器C13、离合器C26、制动器B27和液压控制系统，液压控制系统对变速箱提供液压控制；
其中，行星排P1包括P1排太阳轮12、P1排行星轮、P1排行星架11和P1排齿圈5，P1排行星架11与发动机1相连，P1排太阳轮12与电动机M12相连，或P1排太阳轮12通过离合器C13与电动机M24和P1排齿圈5相连；行星排P2包括P2排太阳轮10、P2排行星轮、P2排行星架9和P2排齿圈8，P2排行星架9作为输出轴，P2排太阳轮10经过P1排齿圈5与电动机M24相连，P2排齿圈8经过离合器C26与P2排太阳轮10相连，或P2排齿圈8与制动器B27连接；
发动机1、电动机M12、电动机M24和P2排行星架9同轴输入、输出；
电动机M12、电动机M24集成在行星排P1和行星排P2的同一侧。
本发明变速箱中，动力由发动机1或电动机输入，通过切换离合器和制动器能使动力以不同的速比输出，满足车辆不同的工况需求。
如表1所示为本发明混合动力变速箱纯电工作时换挡过程的具体实施。
倒挡时，制动器B27闭合，电动机M24反转，其输出转矩传递到P2排太阳轮12，P2排齿圈8固定，通过P2排行星架9输出；
1挡时，制动器B27闭合，电动机M24正转，其输出转矩传递到P2排太阳轮12，P2排齿圈8固定，通过P2排行星架9输出；其功率流图如图2所示；
2挡时，离合器B27闭合，电动机M24正转，其输出转矩传递到P2排太阳轮12，P2排齿圈8固定，通过P2排行星架9输出；
表1电动机M2工作时的挡位切换
如表2所示为本发明混合动力变速箱混动模式工作时切换过程的具体实施。
低速行驶时，离合器C13断开、离合器C26断开、制动器B27闭合，发动机1正转，电动机M12调速，转矩经过P1排齿圈5输出到P2排太阳轮10，P2排齿圈8固定，通过P2排行星架9输出；
高速行驶挡时，离合器C13断开、离合器C26结合、制动器B27断开，发动机1正转，电动机M12调速，其输出转矩经过P1齿圈5传递至P2排齿圈8和P2排太阳轮10，通过P2排行星架9输出；其功率流图如图3所示。
表2混动模式工作时的切换过程
如表3所示为本发明混合动力变速箱电传动模式工作时换挡过程的具体实施。
倒挡时，制动器B27闭合，电动机M24反转，其输出转矩传递到P2排太阳轮10，P2排齿圈8固定，通过P2排行星架9输出；
1挡时，制动器B27闭合，电动机M24正转，其输出转矩传递到P2排太阳轮10，P2排齿圈8固定，通过P2排行星架9输出；其功率流图如图4所示；
2挡时，离合器B27闭合，电动机M24正转，其输出转矩传递到P2排太阳轮10，P2排齿圈8固定，通过P2排行星架9输出；
表3电传动模式工作时的挡位切换
如表4所示为本发明混合动力变速箱发动机直驱时工作过程的具体实施。
低速行驶时，离合器C13闭合、离合器C26断开、制动器B27闭合，发动机1正转，转矩经过P1排齿圈5输出到P2排太阳轮10，P2排齿圈8固定，通过P2排行星架9输出；
高速行驶挡时，离合器C13闭合、离合器C26结合、制动器B27断开，发动机1正转，其输出转矩经过P1排齿圈5传递至P2排齿圈8和P2排太阳轮10，通过P2排行星架9输出；其功率流图如图5所示。
表4发动机直驱时的挡位切换
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (5)

1.一种大功率车辆的混合动力变速箱，其特征在于：包括发动机(1)、电动机M1(2)、电动机M2(4)、行星排P1、行星排P2、离合器C1(3)、离合器C2(6)、制动器B2(7)和液压控制系统，液压控制系统对变速箱提供液压控制；
其中，行星排P1包括P1排太阳轮(12)、P1排行星轮、P1排行星架(11)和P1排齿圈(5)，P1排行星架(11)与发动机(1)相连，P1排太阳轮(12)与电动机M1(2)相连；行星排P2包括P2排太阳轮(10)、P2排行星轮、P2排行星架(9)和P2排齿圈(8)，P2排行星架(9)作为输出轴，P2排太阳轮(10)经过P1排齿圈(5)与电动机M2(4)相连，P2排齿圈(8)经过离合器C2(6)与P2排太阳轮(10)相连；
所述发动机(1)、电动机M1(2)、电动机M2(4)和P2排行星架(9)同轴输入、输出；
所述电动机M1(2)、电动机M2(4)集成在行星排P1和行星排P2的同一侧；
所述P1排太阳轮(12)通过离合器C1(3)与电动机M2(4)和P1排齿圈(5)相连；
所述P2排齿圈(8)与制动器B2(7)连接；
所述电动机M2(4)单独发电或电动机M1(2)、电动机M2(4)同时发电；离合器C1(3)只用于电动机M1(2)故障和车辆需要瞬时大扭矩的工况。
2.根据权利要求1所述的大功率车辆的混合动力变速箱，其特征在于：分为纯电模式一档、纯电模式二挡、混动模式低速、混动模式高速、电传动模式一档、电传动模式二挡和跛行模式；
当为纯电模式一挡时，电动机M2(4)动力输出，离合器C2(6)断开、制动器B2(7)结合、离合器C1(3)断开，行星齿轮机构传动比为3.82，输出轴转速在电动机M2(4)转速范围内实现连续变化；
当为纯电模式二挡时，电动机M2(4)动力输出，离合器C2(6)结合、制动器B2(7)断开、离合器C1(3)断开，行星齿轮机构传动比为1，输出轴转速在电动机M2(4)转速范围内实现连续变化；
当为混动模式低速时，发动机(1)和电动机M1(2)工作，离合器C1(3)断开、离合器C2(6)断开、制动器B2(7)结合；
当为混动模式高速时，发动机(1)和电动机M1(2)工作，离合器C1(3)断开、离合器C2(6)结合、制动器B2(7)断开；
当为电传动模式一挡时，发动机(1)和电动机M1(2)、电动机M2(4)工作，离合器C2(6)断开、制动器B2(7)结合、离合器C1(3)断开，传动比为3.82；
当为电传动模式二挡时，发动机(1)和电动机M1(2)、电动机M2(4)工作，离合器C2(6)结合、制动器B2(7)断开、离合器C1(3)断开，传动比为1；
当为跛行模式时，在电动机M1(2)故障时，离合器C1(3)结合，此时为发动机(1)直驱模式，实现车辆跛行回家。
3.根据权利要求1所述的大功率车辆的混合动力变速箱，其特征在于：所述电动机M1(2)用于发电以及发动机调速。
4.根据权利要求1所述的大功率车辆的混合动力变速箱，其特征在于：车辆倒挡行驶时，所述电动机M2(4)反转，离合器C1(3)断开、制动器B2(7)结合、离合器C2(6)断开。
5.根据权利要求1所述的大功率车辆的混合动力变速箱，其特征在于：当车辆需要制动时，制动器B2(7)闭合，电动机M2(4)发电或电动机M2(4)和电动机M1(2)同时发电，实现能量回收。
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