CN105599584A - Multi-motor-light hybrid two-axle driving coupling plug-in hybrid power system - Google Patents
Multi-motor-light hybrid two-axle driving coupling plug-in hybrid power system Download PDFInfo
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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
- 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 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 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 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 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
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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
- 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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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
- 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 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
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Abstract
本发明公开一种多电机-轻混双轴驱动耦合的插电式混合动力系统，包括3个电机，一个发动机、一个单排行星齿轮机构、离合器、自动变速器、前后差速器以及电池和逆变器；发动机动力输出驱动汽车前桥；电机1和电机2单独或共同输出动力驱动汽车后桥；整车实现纯电动后轮驱动模式、发动机前轮驱动模式、适时四驱模式等工作模式。电机1和电机2协同工作使后轮驱动具有多档位提升了电机的效率；电机3快速启停发动机并根据不同工作状态调整其工作区间，优化发动机工作效率；本发明装置结构紧凑、性能安全可靠、动力强劲，大幅提升输出效率、降低使用成本、提高能源利用率。
The invention discloses a plug-in hybrid power system with multi-motor-mild hybrid dual-shaft drive coupling, which includes three motors, an engine, a single-row planetary gear mechanism, a clutch, an automatic transmission, front and rear differentials, a battery and an inverter. Inverter; engine power output drives the front axle of the vehicle; motor 1 and motor 2 output power individually or jointly to drive the rear axle of the vehicle; the vehicle realizes pure electric rear-wheel drive mode, engine front-wheel drive mode, timely four-wheel drive mode and other working modes. The motor 1 and the motor 2 work together to make the rear wheel drive have multiple gears and improve the efficiency of the motor; the motor 3 starts and stops the engine quickly and adjusts its working range according to different working conditions to optimize the working efficiency of the engine; the device of the present invention is compact in structure and safe in performance Reliable and powerful, greatly improving output efficiency, reducing use costs and improving energy utilization.
Description
技术领域technical field
本发明涉及汽车动力系统，特别是一种多电机-轻混双轴驱动耦合的插电式混合动力系统。The invention relates to an automobile power system, in particular to a plug-in hybrid power system coupled with multi-motor-mild hybrid dual-shaft drive.
背景技术Background technique
插电式混合动力汽车（Plug-inHybridElectricVehicle,PHEV）作为新能源汽车的一种，已成为当今世界解决环境污染问题的重要技术路线之一。国务院最新发布的《中国制造2025》及《节能与新能源汽车产业发展规划（2012-2020年）》中，将节能汽车及新能源汽车作为未来的重点领域，确定了以纯电驱动为新能源汽车发展和汽车工业转型的主要战略取向，当前重点推进纯电动汽车和插电式混合动力汽车产业化，提升我国汽车产业整体技术水平。现今市面上PHEV多为单轴驱动，如丰田普锐斯、通用沃兰达、本田雅阁等，多基于典型混合动力汽车串联、并联及混联结构而研发。与单轴驱动构型相比，双轴四轮驱动混合动力汽车具有较好的动力性、驾驶性和通过性的优点，在经济性和排放性上也具有明显的优势。本发明提出一种新型多电机-轻混双轴驱动耦合的适时四驱插电式混合动力系统，前轴为发动机-电动机轻混驱动系统，通过电动机辅助，可实现发动机的优化高效驱动，在一定程度上提升整车经济性；后轴为多电机多档位自动变速系统，可实现不同档位、不同电机的自适应控制，构型简单，动力强劲，有大幅提升输出效率的潜力，代表了纯电驱动系统发展的新趋势。较好的满足了消费者的高性能驾驶需求，迎合了我国高性能城市SUV、越野车乃至军用新能源汽车研究的迫切需求，响应国家节能减排的号召。As a kind of new energy vehicle, plug-in hybrid electric vehicle (Plug-inHybridElectricVehicle, PHEV) has become one of the important technical routes to solve environmental pollution problems in the world today. In the latest "Made in China 2025" and "Energy-saving and New Energy Vehicle Industry Development Plan (2012-2020)" issued by the State Council, energy-saving vehicles and new energy vehicles are regarded as key areas in the future, and pure electric drives are determined as new energy vehicles. The main strategic orientation of the development and transformation of the automobile industry, currently focusing on promoting the industrialization of pure electric vehicles and plug-in hybrid vehicles, and improving the overall technical level of my country's automobile industry. Most PHEVs on the market today are driven by a single axle, such as Toyota Prius, GM Volanda, Honda Accord, etc., and are mostly developed based on the series, parallel and hybrid structures of typical hybrid vehicles. Compared with the single-axle drive configuration, the two-axle four-wheel drive hybrid vehicle has the advantages of better power, drivability and passability, and also has obvious advantages in economy and emission. The present invention proposes a novel multi-motor-mild-hybrid dual-shaft drive coupling timely four-wheel-drive plug-in hybrid power system. Improve the vehicle economy to a certain extent; the rear axle is a multi-motor and multi-gear automatic transmission system, which can realize adaptive control of different gears and different motors. It has a simple structure, strong power, and the potential to greatly increase output efficiency. The new trend of pure electric drive system development. It better meets the high-performance driving needs of consumers, caters to the urgent needs of my country's high-performance urban SUV, off-road vehicles and even military new energy vehicle research, and responds to the country's call for energy conservation and emission reduction.
发明内容Contents of the invention
本发明提供一种多电机-轻混双轴驱动耦合的插电式混合动力系统，可进一步提升插电式混合动力系统的动力性与经济性，特别是其后轴搭载的多电机多档位自动变速系统，有效提高了纯电驱动效率，延长纯电动续驶里程。The present invention provides a plug-in hybrid power system coupled with multi-motor-mild hybrid dual-shaft drive, which can further improve the power and economy of the plug-in hybrid power system, especially the multi-motor multi-gear mounted on the rear axle The automatic transmission system effectively improves the efficiency of pure electric drive and prolongs the mileage of pure electric driving.
本发明是通过以下技术方案实现的：一种多电机-轻混双轴驱动耦合的插电式混合动力系统，包括发动机、电机1、电机2、电机3、离合器、自动变速器、前差速器、单排行星齿轮机构、后差速器、电池、逆变器，其中发动机的输出端与电机3转子同轴连接离合器，电机2输出端通过齿轮与单排行星齿轮机构齿圈相连，电机1输出端与单排行星齿轮机构太阳轮相连，逆变器与电机1、电机2、电机3、电池相连。The present invention is achieved through the following technical solutions: a plug-in hybrid power system coupled with multi-motor-mild hybrid dual-shaft drive, including engine, motor 1, motor 2, motor 3, clutch, automatic transmission, and front differential , a single-row planetary gear mechanism, a rear differential, a battery, and an inverter, wherein the output end of the engine is coaxially connected to the clutch with the rotor of the motor 3, the output end of the motor 2 is connected with the ring gear of the single-row planetary gear mechanism through gears, and the motor 1 The output end is connected with the sun gear of the single-row planetary gear mechanism, and the inverter is connected with the motor 1, the motor 2, the motor 3 and the battery.
本发明中两个驱动电机系统（电机1和电机2）所具有的额定转速、额定功率和峰值功率均不相同。需依据不同车型及性能要求选取合适的驱动电机系统，可有效提升整个驱动电机系统工作效率。In the present invention, the rated rotational speed, rated power and peak power of the two driving motor systems (motor 1 and motor 2) are different. It is necessary to select the appropriate drive motor system according to different vehicle models and performance requirements, which can effectively improve the working efficiency of the entire drive motor system.
本发明的工作过程与工作原理为：发动机、电机1和电机2发出的动力经过传动轴、单排行星齿轮机构（或自动变速器）、减速器、差速器传递到车轮。发动机输出端输出驱动扭矩通过电机3转子经离合器经自动变速器经主减速器经前差速器驱动前桥；电机1或电机2输出驱动扭矩通过单排行星齿轮机构行星架经后差速器驱动后桥。The working process and working principle of the present invention are: the power sent by the engine, the motor 1 and the motor 2 is transmitted to the wheels through the transmission shaft, the single row planetary gear mechanism (or automatic transmission), the speed reducer and the differential. The output drive torque of the engine output drives the front axle through the rotor of the motor 3 through the clutch through the automatic transmission through the main reducer and through the front differential; the output drive torque of the motor 1 or motor 2 is driven through the planetary carrier of the single-row planetary gear mechanism through the rear differential rear bridge.
在驱动汽车时电机1或电机2从电池通过逆变器获取电能，在制动时电机1或电机2工作在发电模式，将机械能转变为电能存储于电池。When driving the car, motor 1 or motor 2 obtains electrical energy from the battery through the inverter, and when braking, motor 1 or motor 2 works in the power generation mode, converting mechanical energy into electrical energy and storing it in the battery.
发动机在工作时由电机3控制其快速启停，同时电机3根据整车经济性最优的控制策略调整发动机的工作区间。When the engine is working, it is controlled by the motor 3 to start and stop quickly, and at the same time, the motor 3 adjusts the working range of the engine according to the optimal control strategy of the vehicle economy.
通过以上插电式混合动力系统，本发明具有以下优势：Through the above plug-in hybrid power system, the present invention has the following advantages:
本发明有效提升了驱动电机和发动机的工作效率，功耗更小，延长了纯电动续驶里程，降低了整车的使用成本。实现了系统的多模式驱动及适时四轮驱动，根据不同驱动模式的驱动扭矩、行驶速度及整车效率进行计算以实现不同驱动部件之间的能量分配，该系统构型动力强劲，有大幅提升输出效率的潜力，效果非常理想。The invention effectively improves the working efficiency of the driving motor and the engine, has lower power consumption, prolongs the driving range of pure electric driving, and reduces the use cost of the whole vehicle. Realize the multi-mode driving and timely four-wheel drive of the system, and calculate according to the driving torque, driving speed and vehicle efficiency of different driving modes to realize the energy distribution between different driving components. The system configuration is powerful and greatly improved Potential for output efficiency, the effect is very good.
附图说明Description of drawings
图1是本发明装置示意图。Fig. 1 is a schematic diagram of the device of the present invention.
具体实施方式detailed description
如图1所示，本发明一种多电机-轻混双轴驱动耦合的插电式混合动力系统，包括发动机(1)、电机3(2)、离合器(3)、自动变速器(4)、主减速器(5)、前差速器(6)、电机2(7)、电机1(8)、电池(9)、后差速器(10)、齿轮(11)、单排行星齿轮机构(12)、逆变器(13)。As shown in Figure 1, the present invention is a plug-in hybrid power system with multi-motor-mild hybrid dual-shaft drive coupling, including an engine (1), a motor 3 (2), a clutch (3), an automatic transmission (4), Final drive (5), front differential (6), motor 2 (7), motor 1 (8), battery (9), rear differential (10), gear (11), single row planetary gear mechanism (12), inverter (13).
其特征在于：所述发动机(1)的输出轴与电机3(2)转子同轴，所述发动机(1)输出端输出驱动扭矩通过电机3(2)转子经离合器(3)经自动变速器(4)经主减速器(5)经前差速器(6)驱动前桥；所述电机2(7)输出端通过齿轮(11)与单排行星齿轮机构齿圈(12(a))相连，所述电机1(8)输出端与单排行星齿轮机构太阳轮(12(c))相连，所述电机1(7)或电机2(8)输出驱动扭矩通过单排行星齿轮机构行星架(12(b))经后差速器(10)驱动后桥；所述逆变器(13)与电机1(7)、电机2(8)、电机3(2)、电池(9)相连。It is characterized in that: the output shaft of the engine (1) is coaxial with the rotor of the motor 3 (2), and the output drive torque of the output end of the engine (1) passes through the rotor of the motor 3 (2) via the clutch (3) via the automatic transmission ( 4) Drive the front axle through the main reducer (5) and the front differential (6); the output end of the motor 2 (7) is connected with the ring gear (12(a)) of the single-row planetary gear mechanism through the gear (11) , the output end of the motor 1 (8) is connected to the sun gear (12 (c)) of the single-row planetary gear mechanism, and the output driving torque of the motor 1 (7) or the motor 2 (8) passes through the planet carrier of the single-row planetary gear mechanism (12(b)) drives the rear axle through the rear differential (10); the inverter (13) is connected to the motor 1 (7), the motor 2 (8), the motor 3 (2), and the battery (9) .
本发明中两个驱动电机系统（电机1和电机2）所具有的额定转速、额定功率和峰值功率均不相同，需根据档位设置及效率区间要求选择合适的驱动电机系统。In the present invention, the rated speed, rated power and peak power of the two driving motor systems (motor 1 and motor 2) are different, and a suitable driving motor system needs to be selected according to gear setting and efficiency range requirements.
汽车在工作过程中，根据不同的道路行驶条件，驱动模式分为：纯电动后轮驱动模式、发动机前轮驱动模式、适时四驱模式、再生制动能量回收、驻车充电模式。During the working process of the car, according to different road driving conditions, the driving modes are divided into: pure electric rear-wheel drive mode, engine front-wheel drive mode, timely four-wheel drive mode, regenerative braking energy recovery, and parking charging mode.
在纯电动后轮驱动模式下根据不同行驶工况要求驱动模式包括：电机1单独驱动模式、电机2单独驱动模式、电机1和电机2混合驱动模式，不同的电机驱动模式代表不同的档位选择，依据行驶路况、驾驶需求，可通过控制电机1、电机2的工作状态，实现不同电机不同档位的高效驱动；在发动机前轮驱动模式下，电机3(2)用于快速启停发动机，同时根据整车经济性最优的控制策略调整发动机使其工作在高效工作区间；汽车行驶满足四驱行驶条件时无条件进入所述适时四驱模式。In the pure electric rear wheel drive mode, the drive modes required according to different driving conditions include: motor 1 single drive mode, motor 2 single drive mode, motor 1 and motor 2 hybrid drive mode, different motor drive modes represent different gear selections , according to the driving road conditions and driving needs, the efficient driving of different gears of different motors can be realized by controlling the working status of motor 1 and motor 2; in the front-wheel drive mode of the engine, motor 3 (2) is used to quickly start and stop the engine, At the same time, the engine is adjusted according to the optimal control strategy of vehicle economy to make it work in a high-efficiency working range; when the vehicle meets the four-wheel drive driving conditions, it unconditionally enters the timely four-wheel drive mode.
为进一步了解本发明实施方式及内容，通过附图对本发明进行详细说明，具体如下：In order to further understand the embodiment and content of the present invention, the present invention is described in detail through the accompanying drawings, specifically as follows:
1.纯电动后轮驱动模式1. Pure electric rear wheel drive mode
在此模式下电池电量比较充足，当汽车刚起步时，控制离合器分离，此时包括三种纯电动驱动模式：In this mode, the battery power is relatively sufficient. When the car starts, the clutch is controlled to disengage. At this time, there are three pure electric driving modes:
1）电机1单独驱动模式1) Motor 1 alone drive mode
此时电机1转动并提供动力驱动汽车起步加速，电机2固定不动，驱动力通过电机1输出端输出通过单排行星齿轮机构太阳轮经行星轮输出传到后差速器经半轴驱动后车轮；At this time, motor 1 rotates and provides power to drive the car to start and accelerate, while motor 2 is fixed, and the driving force is output through the output end of motor 1 and transmitted to the rear differential through the output of the single-row planetary gear mechanism through the planetary gear and then driven by the half shaft wheel;
2）电机2单独驱动模式2) Motor 2 separate drive mode
根据控制当汽车行驶达到某一设定目标时，电机2转动并提供动力驱动汽车行驶，电机1固定不动，电机2输出端输出扭矩通过齿轮带动单排行星齿轮机构内外齿轮圈旋转，行星轮围绕着不动的太阳轮外旋转，将驱动扭矩传到后差速器经半轴驱动后车轮；According to the control, when the car reaches a certain set target, the motor 2 rotates and provides power to drive the car. It rotates around the stationary sun gear, and transmits the driving torque to the rear differential to drive the rear wheels through the half shaft;
3）电机1和电机2混合驱动模式3) Hybrid driving mode of motor 1 and motor 2
根据控制当汽车行驶达到某一设定目标时，电机1和电机2同时转动，两个电机发出的驱动扭矩通过单排行星齿轮结构的太阳轮和内外齿轮圈旋转，带动行星轮转动并将扭矩传到后差速器经半轴驱动后车轮。According to the control, when the car reaches a certain set target, motor 1 and motor 2 rotate at the same time, and the driving torque generated by the two motors rotates through the sun gear of the single-row planetary gear structure and the inner and outer gear rings, driving the planetary gear to rotate and transfer the torque It is transmitted to the rear differential to drive the rear wheels through the half shaft.
不同电机工作模式的选择也相当于不同档位选择的过程，此模式下，完全消耗电能实现汽车行驶，实现了汽车零排放，同时单排行星齿轮机构提高电机1和电机2的工作效率，输出扭矩大，性能安全，能耗低，可以大幅度提高汽车纯电动续驶里程。The selection of different motor working modes is also equivalent to the process of selecting different gears. In this mode, the car is driven by completely consuming electric energy and realizes zero emission of the car. At the same time, the single-row planetary gear mechanism improves the working efficiency of motor 1 and motor 2, and the output With high torque, safe performance and low energy consumption, it can greatly increase the pure electric mileage of the car.
2.发动机前轮驱动模式2. Engine front wheel drive mode
在此模式下电池电量达到设定下限值，电量较低，此时汽车进入增程行驶情况，在汽车行驶驱动过程中，由发动机单独驱动汽车行驶提供汽车所需的全部动力，实现前轮驱动。在此过程中，首先由电机1提供驱动力启动汽车，放大到发动机开启条件后，电机3提供瞬时正扭矩快速启动发动机，发动机启动后，电机3根据发动机运行情况调整发动机工作状态使其工作在最优经济区，根据调整结果电机3工作在有两种工作状态，即驱动电机状态和发电机，在驱动电机状态时通过逆变器获取电池电能，提高发动机输出功率；在发动机状态时将部分发动机功率转化为电能通过逆变器存储于电池中，维持电池电量。当汽车遇红灯或其他需要发动机长时间怠速运转情况是，由电机3提供瞬时负扭矩快速关闭发动机，实现发动机怠速停机。此模式下，由于电机3根据汽车运行不同情况，将发动机工作状态调整到最佳区域，同时发动机快速启动和怠速停机降低了发动机油耗，提高了汽车的燃油经济性。In this mode, the battery power reaches the set lower limit, and the power is low. At this time, the car enters the extended-range driving situation. During the driving process of the car, the engine alone drives the car to provide all the power required by the car to realize the front wheels. drive. In this process, firstly, the motor 1 provides the driving force to start the car. After the engine is amplified to the condition of starting the engine, the motor 3 provides instantaneous positive torque to quickly start the engine. In the optimal economic zone, according to the adjustment result, the motor 3 works in two working states, that is, the drive motor state and the generator. When the drive motor is in the state, the battery power is obtained through the inverter to increase the engine output power; in the engine state, part of the The engine power is converted into electrical energy and stored in the battery through the inverter to maintain the battery power. When the car encounters a red light or other situations that require the engine to idle for a long time, the motor 3 provides instantaneous negative torque to quickly shut down the engine to realize engine idle shutdown. In this mode, since the motor 3 adjusts the engine working state to the optimal area according to the different conditions of the vehicle, at the same time, the engine's quick start and idle stop reduce the engine fuel consumption and improve the fuel economy of the vehicle.
3.适时四驱模式3. Timely four-wheel drive mode
无论汽车行驶在纯电动后轮驱动模式还是发动机前轮驱动模式，当汽车遇到急加速或爬坡等工况需求功率较大时，汽车进入四驱模式，此时由发动机1与电机1或电机2共同驱动汽车行驶，发动机1为主，电机1或电机2为辅，避免瞬态工况下发动机的燃油经济性和尾气有害排放性能差的情况，不仅提高整车加速动力性，四驱模式更具有较好的操稳性,适用于高性能SUV，军车等场合，同时降低了燃油消耗，进一步提高汽车的燃油经济性。Regardless of whether the car is driving in the pure electric rear-wheel drive mode or the engine front-wheel drive mode, when the car encounters conditions such as rapid acceleration or climbing a hill that require a large amount of power, the car enters the four-wheel drive mode. At this time, the engine 1 and the motor 1 or The motor 2 drives the car together, the engine 1 is the main engine, and the motor 1 or motor 2 is the auxiliary, so as to avoid the poor fuel economy and harmful exhaust emission performance of the engine under transient conditions, and not only improve the acceleration power of the vehicle, but also the four-wheel drive The mode has better handling and stability, and is suitable for high-performance SUVs, military vehicles and other occasions. At the same time, it reduces fuel consumption and further improves the fuel economy of the car.
4.再生制动能量回收4. Regenerative braking energy recovery
汽车在行驶中出现制动或滑行行驶时，控制离合器分离，控制发动机及电机3停机，电机1或电机2根据不同的行驶条件工作于发电机状态，将机械能转变为电能通过逆变器存储于电池中，实现再生制动能量回收，提高能源的利用率。When the car brakes or coasts while driving, the clutch is controlled to disengage, the engine and motor 3 are controlled to stop, and the motor 1 or motor 2 works in the generator state according to different driving conditions, converting mechanical energy into electrical energy and storing it in the inverter. In the battery, regenerative braking energy recovery is realized to improve energy utilization.
5.驻车充电模式5. Parking charging mode
汽车在停止运行时，通过外部电源为电池补充充电，实现驻车充电模式，除安全控制系统外，此时汽车各部件都停止工作，直到电池电量达到设定上限值，驻车充电结束。When the car stops running, the external power supply is used to recharge the battery to realize the parking charging mode. Except for the safety control system, all parts of the car stop working at this time, until the battery power reaches the set upper limit, and the parking charging ends.
本发明采用双电机和单排行星齿轮机构作为纯电动后轮驱动系统，该结构简单且体积小，整车布置紧凑，该结构使用寿命长、噪声低、输出扭矩大、效率与性能安全高，通过良好的齿轮系统匹配提升了电机1和电机2的工作效率，延长汽车纯电动续驶里程；采用电机3对发动机工作状态进行调整，使其工作在最佳工作区域，同时实现发动机的快速启停，降低油耗，同时实现前轮驱动并维持电池电量；发动机与电机1或电机2共同配合驱动，实现汽车适时四轮驱动。该发明在动力性、操稳性、安全舒适性等方面均得到显著提高，整车燃油经济性、能源利用率、有害物的排放也得到了明显的改善。The present invention adopts double motors and a single-row planetary gear mechanism as the pure electric rear wheel drive system. The structure is simple and small, and the whole vehicle is compactly arranged. The structure has long service life, low noise, large output torque, high efficiency and high performance safety. Through good gear system matching, the working efficiency of motor 1 and motor 2 is improved, and the pure electric mileage of the car is extended; the motor 3 is used to adjust the working state of the engine to make it work in the best working area, and at the same time realize the rapid start of the engine stop, reduce fuel consumption, and at the same time achieve front-wheel drive and maintain battery power; the engine and motor 1 or motor 2 are jointly driven to realize timely four-wheel drive. The invention has significantly improved the power performance, handling stability, safety and comfort, etc., and the fuel economy, energy utilization rate and emission of harmful substances of the whole vehicle have also been significantly improved.
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