具体实施方式

下面结合本发明实施例和附图，对本发明实施例中的技术方案进行清楚、完整地描述。以下实施例中所提供的图示仅以示意方式说明本发明的基本构想，在不冲突的情况下，以下实施例及实施例中的特征可以相互组合。为了更好地说明本发明的实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸。在本发明中，术语“第一”、“第二”、“第三”、仅用于描述目的，不能理解为指示或暗示相对重要性；术语“多个”指两个或两个以上；“设置”、“连接”等词语应做广义理解，除非另有明确的限定。对本领域的技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的，不能理解为对本发明的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。

本文所述的壳体9始终静止，第一电机M1包括定子10和转子11，第二电机M2包括定子20和转子21；发动机直驱模式下第一电机M1和第二电机M2锁止状态即为电机转子转数为零，且控制电机转数为零属于电气控制工程领域公知技术不是本发明的重点下文不再介绍；此混合动力系统各个行星排相对于旋转中心是完全对称的，图1和图2中省略了旋转中心的下半部分，以下描述时不再作出说明。

实施例：

请参阅表1、图1和图2，根据本发明的第一方面实施例的一种行星齿轮式混合动力系统，包括：发动机100、第一电机M1、第二电机M2、第一行星排、第二行星排、离合器、制动器和设置于行星排之间用于传递动力的结构元件;所述第一行星排为行星排P1包括第一太阳轮S1、第一行星架H1、第一齿圈R1；所述第二行星排由星排P2和行星排P3组合而成，所述第二行星排包括第二太阳轮S2、第三太阳轮S3、第二行星架H2、第二齿圈R2；

所述离合器为离合器C1，所述制动器包括第一制动器B1和第二制动器B2，所述第一电机M1包括定子10和转子11，所述第二电机M2包括定子20和转子21；所述结构元件包括壳体9、第一结构元件1、第二结构元件2、第三结构元件3、第四结构元件4、第五结构元件5、第六结构元件6；

所述第一结构元件1连接第一齿圈R1和第二行星架H2，同时还与离合器C1连接,可以理解为第一齿圈R1和第二行星架H2为固定连接；所述离合器C1的另一端与发动机100的动力输出轴连接。所述第二结构元件2一端连接第一太阳轮S1，另一端连接第一电机M1的转子11,可以理解为第一电机M1的转子11与第一太阳轮S1固定连接；所述第三结构元件3一端连接第三太阳轮S3，另一端连接第二电机M2的转子21,可以理解为第二电机M2的转子21与第三太阳轮S3固定连接；所述第四结构元件4一端连接第二太阳轮S2，另一端连接第一制动器B1；所述第五结构元件5一端连接第二行星架H2，另一端连接第二制动器B2；所述第六结构元件6一端连接第一行星架H1，另一端连接第二齿圈R2，可以理解为第一行星架H1和第二齿圈R2为固定连接。

本发明的行星齿轮式混合动力系统可实现多个动力模式，主要包括纯电模式、发动机直驱模式、功率分流模式、并联驱动模式、制动能量回收模式和驻车充电模式，动力模式具体如下：

请参阅表1、图1和图2，可以理解的是在纯电驱动的各个挡位下所述发动机100不工作，所述离合器C1断开防止发动机100被倒拖。

纯电一挡：结合第二制动器B2、第一电机M1驱动

结合第二制动器B2，第二行星架H2与壳体9固定连接，第二行星架H2、第一结构元件1、第一齿圈R1转速为零，第一电机 M1驱动，第一太阳轮S1与第一电机M1转速相同；第一电机M1将动力依次传递给第二结构元件2、第一太阳轮S1、第一行星架H1、第六结构元件6对外输出动力。

纯电二挡：结合第二制动器B2、第二电机M2驱动

结合第二制动器B2，第二行星架H2与壳体9固定连接，第二行星架H2转速为零，第二电机M2驱动，第三太阳轮S3转速与第二电机M2转速相同；第二电机M2将动力依次传递给第三结构元件3、第三太阳轮S3、行星齿轮X3、行星齿轮X2、第二齿圈R2、第六结构元件6对外输出动力。

纯电三挡:结合第一制动器B1、第一电机M1驱动

结合第一制动器B1，第二太阳轮S2与壳体9固定连接，第二太阳轮S2转速为零；第一电机M1驱动，第一太阳轮S1与第一电机M1转数相同，第一电机M1将动力依次传递给第二结构元件2、第一太阳轮S1、行星齿轮X1、第一齿圈R1、第一结构元件1、第二行星架H2、第二齿圈R2、第六结构元件6对外输出动力。

纯电四挡:结合第一制动器B1、第二电机M2驱动

结合制动器B1，第二太阳轮S2与壳体9固定连接，第二太阳轮S2转速为零；第二电机M2驱动，第二电机M2与第三太阳轮S3转数相同；第二电机M2将动力依次传递给第三结构元件3、第三太阳轮S3、行星齿轮X3、行星齿轮X2，第三太阳轮S3、行星齿轮X3和行星齿轮X2通过共用行星架H2将动力传递给第二齿圈R2，第六结构元件6对外输出动力。

发动机直驱一挡：结合离合器C1、控制第二电机M2转速为零

结合离合器C1，第二行星架H2与发动机100动力联通且转数相同，控制第二电机M2转速为零，第三太阳轮S3与第二电机M2转数相同都为零；发动机100将动力传递给离合器C1、第一结构元件1、第二行星架H2、第二齿圈R2、第六结构元件6对外输出动力。

发动机直驱二挡：结合离合器C1、控制第一电机M1转速为零

结合离合器C1，第一齿圈R1与发动机100动力联通且转数相同，控制第一电机M1转速为零，第一太阳轮S1与第一电机M1转数相同都为零；发动机100将动力传递给离合器C1、第一结构元件1、第一齿圈R1、第一行星架H1、第六结构元件6对外输出动力。

发动机直驱三挡：结合离合器C1、第一制动器B1

结合第一制动器B1，第二太阳轮S2与壳体9固定连接，第二太阳轮S2转数为零；结合离合器C1，第一结构元件1与发动机100动力联通且转数相同；发动机100将动力传递给离合器C1、第一结构元件1、第二行星架H2、行星齿轮X2、第二齿圈R2、第六结构元件6对外输出动力。

功率分流模式：结合离合器C1

结合离合器C1第一齿圈R1和第二行星架H2与发动机100动力联通且转数相同，发动机100将动力传递给离合器C1、第一结构元件1、第一齿圈R1和第二行星架H2；发动机100可驱动第一电机M1转动，第一电机M1作为发电电机发电，第二电机M2作为驱动电机工作；或者发动机100驱动第二电机M2转动，第二电机M2作为发电电机发电，第一电机M1作为驱动电机工作。此模式下根据车辆输出功率需求，通过发动机100、第一电机M1、第二电机M2和第一行星排或者第二行星排的协同工作，保证发动机始终处于高效率工作区间，以此保证燃油经济性，提升整车的综合动力性和经济性；发动机可具有较好的燃油经济性，利于减少电池的使用，提高电池寿命，从而提高整车的综合经济性。

并联驱动模式一挡：结合离合器C1，第一电机M1驱动

结合离合器C1第一齿圈R1与发动机100动力联通且转数相同，发动机100将动力传递给离合器C1、第一结构元件1、第一齿圈R1；同时第一电机M1驱动，将动力传递给第二结构元件2、第一太阳轮S1；两股动力汇聚于第一行星架H1上，进而传递给第六结构元件6对外输出动力。

并联驱动模式二挡：结合离合器C1，第二电机M2驱动

结合离合器C1第二行星架H2与发动机100动力联通且转数相同，发动机100将动力传递给离合器C1、第一结构元件1、第二行星架H2；同时第二电机M2驱动，将动力传递给第三结构元件3、第三太阳轮S3、两股动力汇聚于第二行星架H2上，进而传递给第二齿圈R2、第六结构元件6对外输出动力。

制动能量回收模式：

在所述各个模式下车辆制动时，所述发动机100不工作，所述离合器C1断开防止发动机100被倒拖；第二制动器B2结合，第二行星架H2、第一结构元件1和第一齿圈R1转数为零，第一电机M1、第二电机M2受到反向扭矩转动发电，所述混合动力系统进入制动能量回收模式；此时制动能量回收路线分为两路：一路为，第六结构元件6、第一行星架H1、行星齿轮X1、第一太阳轮S1、第二结构元件2、第一电机M1转动发电；另一路为，第六结构元件6、第二齿圈R2、行星齿轮X2、行星齿轮X3、第三结构元件3、第二电机M2转动发电，该模式应用于车辆制动能量回收。

驻车充电模式：发动机100启动工作，结合离合器C1

可以理解的是当进入驻车充电模式时驻车机构锁止车轮进而第六结构元件6转数为零，结合离合器C1第一齿圈R1和第二行星架H2与发动机100动力联通且转数相同；发动机100将动力依次传递给离合器C1、第一结构元件1，动力分成两路一路：一路传递至第一齿圈R1、行星齿轮X1、第一太阳轮S1、第二结构元件2，第一电机M1作为发电电机发电；另一路传递至第二行星架H2、行星齿轮X2、行星齿轮X3、第三太阳轮S3、第三结构元件3，第二电机M2作为发电电机发电。

倒挡：所述倒挡有以下两种实现形式

1.结合制动器B2，第一电机M1反转驱动，动力依次传递给第二结构元件2、第一太阳轮S1、第一行星架H1、第六结构元件6反向对外输出动力；

2.结合制动器B2，第二电机M2反转驱动，动力依次传递给第三结构元件3、第三太阳轮S3、行星齿轮X3，行星齿轮X2、第二齿圈R2、第六结构元件6反向对外输出动力。

当然，挡位与路况的适应关系并不局限于上述情况，可以根据油耗和动力，对不同的路况安排不同的挡位分配模式，在此不对挡位与路况的适应关系作限制。

表1为此行星齿轮式混合动力系统的挡位控制逻辑图

表1：

注：表中“√”表示离合器或制动器结合，无“√”则表示不结合。

以上所描述的实施例是本发明中一部分实施例，而不是全部的实施例；基于本发明中的实施例，本领域普通技术人员在没有付出创造性劳动的前提下所有获得的所有其他实施例，都属于本发明的保护范围。

The specific embodiment

The following is combined with the embodiments of the present invention and the accompanying drawings, and the technical solutions in the embodiments of the present invention are clearly and completely described. The illustrations provided in the following embodiments illustrate the basic ideas of the present invention only in a schematic manner, and without conflict, the following embodiments and the features in the embodiments may be combined with each other. In order to better illustrate the embodiments of the present invention, some parts of the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product. In the present invention, the terms "first", "second", "third", are used for descriptive purposes only and should not be construed as indicating or implying relative importance; The term "multiple" means two or more of them; Words such as "settings" and "connections" shall be construed broadly unless expressly defined otherwise. It is understandable that certain well-known structures in the drawings and their descriptions may be omitted for those skilled in the art and cannot be construed as a limitation on the present invention, and for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

The housing 9 described in this article is stationary at all times, and the first motor M1 comprises a stator 10 and a rotor 11, and the second motor M2 comprises a stator 20 and a rotor 21; In the engine direct drive mode, the first motor M1 and the second motor M2 are locked in state, that is, the motor rotor number is zero, and the control motor number is zero, which belongs to the well-known technology in the field of electrical control engineering, is not the focus of the present invention, and will not be introduced below; The planetary rows of this hybrid system are perfectly symmetrical with respect to the center of rotation, and the lower half of the center of rotation is omitted in Figures 1 and 2 and will not be described below.

Examples:

Referring to Table 1, Fig. 1 and Fig. 2, a planetary gear hybrid system according to the first embodiment of the present invention comprises: engine 100, a first motor M1, a second motor M2, a first planetary row, a second planetary row, a clutch, a brake and a structural element arranged between planetary rows for transmitting power; Described first planetary row is planetary row P1 comprises first sun gear S1, first planetary carrier H1, first gear ring R1; the second planetary row is formed by combining a star row P2 and a planetary row P3, and the second planetary row comprises a second sun gear S2, a third sun wheel S3, a second planetary carrier H2, and a second gear ring R2;

the clutch is a clutch C1, the brake comprises a first brake B1 and a second brake B2, the first motor M1 comprises a stator 10 and a rotor 11, and the second motor M2 comprises a stator 20 and a rotor 21; Described structural element comprises shell 9, first structural element 1, second structural element 2, 3rd structural element 3, 4th structural element 4, 5th structural element 5, 6th structural element 6;

the first structural element 1 connects the first gear ring R1 and the second planetary carrier H2, and is also connected with the clutch C1, which can be understood as the first gear ring R1 and the second planetary carrier H2 are fixedly connected; The other end of described clutch C1 is connected with the power take-off shaft of engine 100. Described second structural element 2 is connected to the first sun gear S1 at one end, and the rotor 11 of the first motor M1 is connected to the other end at the other end, which can be understood as the rotor 11 of the first motor M1 is fixedly connected with the first sun gear S1; Described third structural element 3 is connected to the third sun gear S3 at one end, and the rotor 21 of the second motor M2 is connected to the other end at the other end, which can be understood as the rotor 21 of the second motor M2 is fixedly connected with the third sun gear S3; Described fourth structural element 4 one end is connected with the second sun gear S2, and the other end is connected with the first brake B1; Described fifth structural element 5 one end is connected with the second planetary carrier H2, and the other end is connected with the second brake B2; Described sixth structural element 6 is connected to the first planetary carrier H1 at one end, and the other end is connected with the second gear ring R2, which can be understood as the first planetary carrier H1 and the second gear ring R2 are fixedly connected.

The planetary gear hybrid system of the present invention can realize a plurality of power modes, mainly comprising pure electric mode, engine direct drive mode, power shunt mode, parallel drive mode, braking energy recovery mode and parking charging mode, and the power mode is as follows:

Refer to Table 1, Figure 1 and Figure 2, it can be understood that the engine 100 does not work under the various gears of pure electric drive, and the clutch C1 disconnects to prevent the engine 100 from being dragged backwards.

Pure electric first gear: combined with the second brake B2, the first motor M1 drive

Combined with the second brake B2, the second planetary carrier H2 is fixedly connected with the housing 9, the second planetary carrier H2, the first structural element 1, the first gear ring R1 rotation speed is zero, the first motor M1 drives, and the first sun gear S1 and the first motor M1 rotate at the same speed; The first motor M1 transmits power to the second structural element 2, the first sun gear S1, the first planetary carrier H1, and the sixth structural element 6 to output power externally.

Pure electric second gear: combined with the second brake B2 and the second motor M2 drive

Combining the second brake B2, the second planetary carrier H2 is fixedly connected with the housing 9, the second planetary carrier H2 rotation speed is zero, the second motor M2 drives, and the third sun gear S3 rotation speed is the same as the second motor M2 rotational speed; The second motor M2 transmits power to the third structural element 3, the third sun gear S3, planetary gear X3, planetary gear X2, the second gear ring R2, and the sixth structural element 6 to output power externally.

Pure electric three gears: combined with the first brake B1 and the first motor M1 drive

Combined with the first brake B1, the second sun gear S2 is fixedly connected with the housing 9, and the second sun gear S2 rotation speed is zero; The first motor M1 drives, the first sun gear S1 and the first motor M1 have the same number of revolutions, and the first motor M1 transmits power to the second structural element 2, the first sun gear S1, the planetary gear X1, the first gear ring R1, the first structural element 1, the second planetary carrier H2, the second ring gear R2, and the sixth structural element 6 output power externally.

Pure electric four gears: combined with the first brake B1, the second motor M2 drive

Combined with brake B1, the second sun gear S2 is fixedly connected with the housing 9, and the second sun gear S2 rotation speed is zero; the second motor M2 drives, and the second motor M2 is the same as the third sun gear S3 revolution; The second motor M2 transmits power to the third structural element 3, the third sun gear S3, the planetary gear X3, the planetary gear X2 in turn, and the third sun gear S3, the planetary gear X3 and the planetary gear X2 transmit the power to the second gear ring R2 through the common planetary carrier H2, and the sixth structural element 6 outputs power externally.

Engine direct drive first gear: combined with the clutch C1, control the second motor M2 speed is zero

Combined with clutch C1, the second planetary carrier H2 is connected with engine 100 power and the number of revolutions is the same, the speed of the control second motor M2 is zero, and the number of revolutions of the third sun gear S3 and the second motor M2 is the same and is zero; The engine 100 transmits power to clutch C1, the first structural element 1, the second planetary carrier H2, the second ring gear R2, the sixth structural element 6 to output power externally.

Engine direct drive second gear: combined with the clutch C1, control the first motor M1 speed is zero

Combined with clutch C1, the first gear ring R1 is connected with the engine 100 power and the number of revolutions is the same, the speed of the control first motor M1 is zero, and the number of revolutions of the first sun gear S1 and the first motor M1 is the same and are zero; The engine 100 transmits power to clutch C1, the first structural element 1, the first gear ring R1, the first planetary carrier H1, the sixth structural element 6 to output power externally.

Engine direct drive three gears: combined with clutch C1, the first brake B1

Combined with the first brake B1, the second sun gear S2 is fixedly connected with the housing 9, and the second sun gear S2 revolutions are zero; Combined with clutch C1, the first structural element 1 is connected with the engine 100 power and the number of revolutions is the same; The engine 100 transmits power to clutch C1, the first structural element 1, the second planetary carrier H2, the planetary gear X2, the second ring gear R2, the sixth structural element 6 to output power externally.

Power split mode: Combined with clutch C1

Combine clutch C1 first gear ring R1 and second planet carrier H2 and engine 100 power communication and the same number of revolutions, and engine 100 transmits power to clutch C1, first structural element 1, first gear ring R1 and second planet carrier H2; The engine 100 can drive the first motor M1 to rotate, and the first motor M1 generates electricity as a generating motor, and the second motor M2 works as a driving motor; Or the engine 100 drives the second motor M2 to rotate, and the second motor M2 generates electricity as a generating motor, and the first motor M1 works as a driving motor. In this mode, according to the output power demand of the vehicle, the engine 100, the first motor M1, the second motor M2 and the first planetary row or the second planetary row work together to ensure that the engine is always in the high-efficiency working range, so as to ensure fuel economy, improve the comprehensive power and economy of the whole vehicle; The engine can have good fuel economy, which is conducive to reducing the use of batteries and improving battery life, thereby improving the comprehensive economy of the whole vehicle.

Parallel drive mode 1st gear: combined with clutch C1, the first motor M1 drive

Combine clutch C1 first gear ring R1 and engine 100 power connection and the number of revolutions is the same, engine 100 transmits power to clutch C1, first structural element 1, first gear ring R1; At the same time, the first motor M1 is driven, and the power is transmitted to the second structural element 2 and the first sun gear S1; The two forces converge on the first planetary carrier H1 and then transmit to the sixth structural element 6 to output power externally.

Parallel drive mode 2nd gear: combined with clutch C1, the second motor M2 drive

Combine clutch C1 second planetary carrier H2 and engine 100 power communication and the same number of revolutions, and engine 100 transmits power to clutch C1, first structural element 1, second planetary carrier H2; At the same time, the second motor M2 drives, transmits power to the third structural element 3, the third sun gear S3, and the two strands of power converge on the second planetary carrier H2, and then transmits to the second gear ring R2, and the sixth structural element 6 outputs power externally.

Regenerative braking mode:

When vehicle braking in described various modes, described engine 100 does not work, and described clutch C1 disconnects to prevent engine 100 from being dragged backwards; the second brake B2 is combined, the second planetary carrier H2, the first structural element 1 and the first gear ring R1 are zero, the first motor M1 and the second motor M2 are subjected to reverse torque rotation to generate electricity, and the hybrid system enters the braking energy recovery mode; At this moment, the braking energy recovery route is divided into two roads: one is the sixth structural element 6, the first planetary carrier H1, the planetary gear X1, the first sun gear S1, the second structural element 2, the first motor M1 rotates to generate electricity; The other way is, the sixth structural element 6, the second gear ring R2, the planetary gear X2, the planetary gear X3, the third structural element 3, the second motor M2 rotate to generate electricity, and this mode is applied to vehicle braking energy recovery.

Parking charging mode: engine 100 start work, combined with clutch C1

It is understandable that when entering the parking charging mode, the parking mechanism locks the wheel, and then the sixth structural element 6 revolutions are zero, combined with the clutch C1, the first gear ring R1 and the second planet carrier H2 are connected with the engine 100 power connection, and the number of revolutions is the same; The engine 100 transmits power to clutch C1 and the first structural element 1 in turn, and the power is divided into two ways and one way: one road is transmitted to the first gear ring R1, planetary gear X1, the first sun gear S1, the second structural element 2, and the first motor M1 generates electricity as a generator motor; The other channel is transmitted to the second planetary carrier H2, the planetary gear X2, the planetary gear X3, the third sun gear S3, the third structural element 3, and the second motor M2 is used as a power generating motor to generate electricity.

Reverse gear: the reverse gear has the following two implementation forms

1. Combined with brake B2, the first motor M1 is reversed and driven, and the power is successively transmitted to the second structural element 2, the first sun gear S1, the first planet carrier H1, and the sixth structural element 6 reverse external output power;

2. combined with brake B2, the second motor M2 reverse drive, and the power is successively transmitted to the third structural element 3, the third sun gear S3, the planetary gear X3, the planetary gear X2, the second gear ring R2, the sixth structural element 6 reverse external output power.

Of course, the adaptation relationship between gear and road conditions is not limited to the above situation, according to fuel consumption and power, different gear distribution modes can be arranged for different road conditions, and the adaptation relationship between gear and road conditions is not limited here.

Table 1 shows the gear control logic diagram of this planetary gear hybrid system

Table 1:

Note: "√" in the table means that the clutch or brake is combined, and no "√" means that it is not combined.

The embodiments described above are some embodiments of the present invention, but not all embodiments; Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative labor belong to the scope of protection of the present invention.