Power system and automobile

Abstract

The invention discloses a power system and an automobile. The power system comprises an engine, a first motor, a second motor, an engine transmission device, a first transmission device, a second transmission device, a speed change device, a first disconnecting device, a second disconnecting device, a first axle and a second axle. An engine is connected to a first motor through an engine transmission device, a first disconnecting device and a first transmission device in sequence, a second motor is connected to a second transmission device through a second disconnecting device, and the second transmission device is connected with the engine transmission device and the speed change device. The speed change device is connected to the first wheel shaft, and the second wheel shaft is connected with the first transmission device. The working efficiency of the power system can be improved, the power system can give consideration to more working conditions, and the performance of the whole power system is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile power technology, and in particular to a power system and an automobile. Background Art

[0002] At present, the power system in related technologies usually includes an engine and a motor, and the motor is a single-speed drive hybrid, or an extended-range power architecture in which the engine generates electricity and then transmits electricity to the motor, which makes the working efficiency of the entire system low, and the power system can only operate in relatively few working conditions, resulting in low performance. Summary of the Invention

[0003] In view of this, the present application provides a method for use in a power system and a vehicle to improve the efficiency of the power system, enable the power system to take into account more working conditions, and enhance the performance of the entire power system. The technical solution of the present application is as follows: In a first aspect, the present application provides a power system comprising: an engine, a first motor, a second motor, an engine transmission, a first transmission, a second transmission, a speed change, a first disconnecting device, a second disconnecting device, a first axle and a second axle; the engine is connected to the first motor via the engine transmission, the first disconnecting device and the first transmission in sequence, the second motor is connected to the second transmission via the second disconnecting device, the second transmission is respectively connected to the engine transmission and the speed change, the speed change is connected to the first axle, and the second axle is connected to the first transmission.

[0004] In one embodiment of the present application, a third disconnecting device is further included, and the first axle is connected to the second axle via the third disconnecting device.

[0005] In one embodiment of the present application, the engine transmission device includes a first intermediate shaft, a second intermediate shaft, a first clutch, a torque damper, and an engine gear; the engine is connected to the first clutch through the first intermediate shaft, and the first clutch is connected to the first disconnecting device through the second intermediate shaft; the engine gear is arranged on the second intermediate shaft for meshing and connecting to the second transmission device; the engine is connected to the first intermediate shaft through the torque damper.

[0006] In one embodiment of the present application, the first transmission device includes a third intermediate shaft, a fourth intermediate shaft, a fifth intermediate shaft, a second clutch, a first gear, a second gear, a third gear and a fourth gear; the first motor is connected to the second clutch through the third intermediate shaft, and the second clutch is connected to the first disconnecting device through the fourth intermediate shaft; the first gear is arranged on the fourth intermediate shaft for meshing and connecting to the second gear; the second gear and the third gear are arranged on the fifth intermediate shaft, and the third gear is used for meshing and connecting to the fourth gear; the fourth gear is arranged on the second wheel axle.

[0007] In one embodiment of the present application, the second transmission device includes a sixth intermediate shaft, a fifth gear, a sixth gear and a seventh gear; the second motor is connected to the sixth intermediate shaft through a second disconnecting device, and the fifth gear, the sixth gear and the seventh gear are arranged on the sixth intermediate shaft; the fifth gear and the sixth gear are used to be meshed and connected to the speed change device, and the seventh gear is used to be meshed and connected to the engine transmission device.

[0008] In one embodiment of the present application, the speed change device includes a gear unit, which is connected to the second transmission device and the first axle; the gear unit is used to adjust the torque and speed output by the second transmission device.

[0009] In one embodiment of the present application, the speed change device includes a differential lock unit, which is arranged between the first wheel axle and the third disconnect device and connected to the gear unit; the differential lock unit is used to lock the torque between the first wheel axle and the third disconnect device.

[0010] In one embodiment of the present application, the gear unit includes an eighth gear, a ninth gear, a tenth gear, a shift paddle and a seventh intermediate shaft; the eighth gear, the ninth gear and the tenth gear are arranged on the seventh intermediate shaft, and the shift paddle is arranged between the eighth gear and the ninth gear; the eighth gear and the ninth gear are used to be meshed and connected to the second transmission device; the tenth gear is used to be meshed and connected to the differential lock unit.

[0011] In one embodiment of the present application, the differential lock unit includes a differential lock, an eighth intermediate shaft and an eleventh gear. The first wheel axle is connected to the eighth intermediate shaft through the differential lock, the eighth intermediate shaft is connected to the third disconnecting device, and the eleventh gear is arranged on the eighth intermediate shaft; the eleventh gear is used to engage and connect to the tenth gear.

[0012] In one embodiment of the present application, a controller is further included, which is connected to the engine transmission device, the first transmission device, the second transmission device, the speed change device, the first disconnecting device, the second disconnecting device and the third disconnecting device; the controller is used to control the engine transmission device, the first transmission device, the second transmission device, the speed change device, the first disconnecting device, the second disconnecting device and the third disconnecting device to switch to the corresponding working state in response to the current working mode.

[0013] A second aspect of the present application provides an automobile, including a power system.

[0014] It can be understood that the present application realizes power mixing of the engine and the second motor by arranging the power of the engine transmission device to be transmitted to the first wheel axle through the second transmission device and the speed change device, and arranging the second motor to be transmitted to the first wheel axle through the second transmission device and the speed change device, while allowing the engine and the second motor to share the speed change device, thereby reducing the power transmission cost of the entire system, and allowing the engine and the second motor to operate in a high efficiency range when power mixing, and allowing the engine and the second motor to perform power mixing in any working range, thereby realizing various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic block diagram of a power system provided in an embodiment of the present application.

[0016] Figure 2 It is a structural diagram of a power system provided in an embodiment of the present application.

[0017] Figure 3 This is a schematic diagram of a power system provided in an embodiment of the present application operating in a pure electric distributed drive mode.

[0018] Figure 4 This is a schematic diagram of a power system provided in an embodiment of the present application operating in a pure oil direct drive mode.

[0019] Figure 5 This is a schematic diagram of a power system provided in an embodiment of the present application operating in a single-motor drive mode.

[0020] Figure 6 This is a schematic diagram of a power system provided in an embodiment of the present application operating in a hybrid drive mode.

[0021] Figure 7 This is a schematic diagram of a power system provided in an embodiment of the present application operating in an extended-range mode.

[0022] Figure 8 It is a schematic diagram of a power system provided in an embodiment of the present application operating in an off-road escape mode.

[0023] Figure 9 This is a schematic diagram of a power system provided in an embodiment of the present application operating in an energy recovery mode. DETAILED DESCRIPTION

[0024] It should be noted that, in the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0025] It should also be noted that the method disclosed in the embodiments of the present application or the method shown in the flowchart includes one or more steps for implementing the method. Without departing from the scope of the claims, the execution order of multiple steps can be interchanged with each other, and some steps can also be deleted.

[0026] Please refer to Figure 1 , Figure 1 This is a schematic block diagram of a power system according to an embodiment of the present application. The power system 100 includes an engine 110, a first motor 120, a second motor 130, an engine transmission 140, a first transmission 150, a second transmission 160, a speed change 170, a first disconnect 180, a second disconnect 190, a third disconnect 101, a first axle 102, and a second axle 103.

[0027] In the embodiment of the present application, the engine 110 is connected to the engine transmission 140, the engine transmission 140 is connected to the first disconnect device 180, the first disconnect device 180 is connected to the first transmission 150, and the first transmission 150 is connected to the first motor 120. The second motor 130 is connected to the second transmission 160 via the second disconnect device 190, the second transmission 160 is connected to the engine transmission 140 and the speed change device 170, respectively, the speed change device 170 is connected to the first axle 102, the first axle 102 is connected to the second axle 103 via the third disconnect device 101, and the second axle 103 is connected to the first transmission 150. It will be understood that the above-mentioned power system 100 can be installed in an automobile. For example, the first axle 102 can be mounted on the left rear wheel of the automobile, and the second axle can be mounted on the right rear wheel of the automobile.

[0028] The engine 110 generates power by burning gasoline and outputs it through the engine transmission 140. The power from the engine transmission 140 is then transmitted to the first axle 102 via the second transmission 160 and the speed changer 170. The speed changer 170 receives and shifts the power, thereby achieving a speed change effect for the engine 110. When the third disconnect device 101 is engaged, the power from the engine 110 can also be transmitted to the second axle 103 via the first axle 102.

[0029] The first motor 120 receives electrical energy to generate power, which is then output through the first transmission device 150 and transmitted to the second axle 103. When the first disconnect device 180 is engaged, the power output by the engine transmission device 140 can be transmitted through the first disconnect device 180 to the first transmission device 150, and then transmitted to the second axle 103 by the first transmission device 150, thereby achieving the effect of combining the power outputs of the engine 110 and the first motor 120 and outputting them to the second axle 103.

[0030] When the second disconnect device 190 is engaged and the second motor 130 receives electrical energy to generate power, the power is transmitted to the first axle 102 via the second transmission device 160 and the speed change device 170. Since the power of the second motor 130 passes through the speed change device 170, the speed of the power of the second motor 130 can be changed, and the power output of the engine 110 and the second motor 130 is mixed and output to the first axle 102.

[0031] It can be understood that the present application realizes power mixing of the engine 110 and the second motor 130 by arranging the power of the engine transmission device 140 to be transmitted to the first axle 102 through the second transmission device 160 and the speed change device 170, and arranging the second motor 130 to be transmitted to the first axle 102 through the second transmission device 160 and the speed change device 170, and enables the engine 110 and the second motor 130 to share the speed change device 170, thereby reducing the power transmission cost of the entire system, and enabling the engine 110 and the second motor 130 to operate in a high efficiency range when power mixing, and enabling the engine 110 and the second motor 130 to perform power mixing in any working range, thereby realizing various working conditions. And by setting the first transmission device 150 directly connected to the second axle 103, setting the first transmission device 150 to be connected to the engine transmission device 140 through the first disconnecting device 180, and setting the third disconnecting device 101 to be connected to the first axle 102 and the second axle 103 respectively, the first motor 120 is enabled to intervene in the system to work by controlling the working status of the first disconnecting device 180 and the third disconnecting device 101, so that the system can take into account more working conditions and improve the performance of the entire power system 100.

[0032] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a power system 100 provided in an embodiment of the present application. The power system 100 includes: an engine 110, a first motor 120, a second motor 130, an engine transmission 140, a first transmission 150, a second transmission 160, a speed change 170, a first disconnect device 180, a second disconnect device 190, a third disconnect device 101, a first axle 102, and a second axle 103.

[0033] In the embodiment of the present application, the engine transmission device 140 includes a first intermediate shaft 141, a second intermediate shaft 142, a first clutch 143, and an engine gear 144. The engine 110 is connected to the first clutch 143 via the first intermediate shaft 141, and the first clutch 143 is connected to the first disconnect device 180 via the second intermediate shaft 142. The engine gear 144 is disposed on the second intermediate shaft 142 for meshing with the second transmission device 160.

[0034] That is, the engine transmission device 140 can gradually increase the power output by the engine 110 by setting the first clutch 143, so that the power output by the engine 110 can be transmitted to the first transmission device 150 and the second transmission device 160 in a gradually increasing manner, reducing the torque impact on the first transmission device 150 and the second transmission device 160.

[0035] In some embodiments, the engine transmission device 140 also includes a torque damper 145, and the engine 110 is connected to the first intermediate shaft 141 through the torque damper 145 to improve the smoothness of the power output of the engine 110 and further reduce the torque impact of the power output of the engine 110 on the first transmission device 150 and the second transmission device 160.

[0036] In this embodiment of the present application, the first transmission device 150 includes a third intermediate shaft 151, a fourth intermediate shaft 152, a fifth intermediate shaft 153, a second clutch 154, a first gear 155, a second gear 156, a third gear 157, and a fourth gear 158. The first motor 120 is connected to the second clutch 154 via the third intermediate shaft 151, and the second clutch 154 is connected to the first disconnect device 180 via the fourth intermediate shaft 152. The first gear 155 is disposed on the fourth intermediate shaft 152 and is meshed with the second gear 156. The second gear 156 and the third gear 157 are disposed on the fifth intermediate shaft 153, and the third gear 157 is meshed with the fourth gear 158. The fourth gear 158 is disposed on the second axle 103.

[0037] Among them, the first transmission device 150 can gradually increase the power output by the first motor 120 by setting the second clutch 154, so that the power output by the first motor 120 can be transmitted to the engine transmission device 140 in a gradually increasing manner, and the power transmitted by the first gear 155 can be transmitted to the second axle 103 through the second gear 156, the third gear 157 and the fourth gear 158 in a gradually increasing manner, so as to reduce the torque impact of the power output of the first motor 120 on the engine transmission device 140 and the inside of the first transmission device 150.

[0038] The second transmission device 160 includes a sixth intermediate shaft 161, a fifth gear 162, a sixth gear 163, and a seventh gear 164. The second motor 130 is connected to the sixth intermediate shaft 161 via a second disconnect device 190. The fifth gear 162, the sixth gear 163, and the seventh gear 164 are disposed on the sixth intermediate shaft 161. The fifth gear 162 and the sixth gear 163 are configured to mesh with the speed change device 170. The seventh gear 164 is configured to mesh with the engine transmission device 140. Specifically, the engine gear 144 meshes with the seventh gear 164.

[0039] The second transmission device 160 receives power from the engine transmission device 140 via the seventh gear 164, which is then combined with the power output by the second motor 130 when the second disconnect device 190 is engaged. The power from the second transmission device 160 is transmitted to the speed change device 170 via the fifth gear 162 or the sixth gear 163. In some embodiments, the fifth gear 162, the sixth gear 163, and the seventh gear 164 can have different numbers of teeth to achieve the effect of varying the speed and torque of the hybrid power output by the engine 110 and the second motor 130.

[0040] The transmission 170 includes a shift unit 171 and a differential lock unit 172. The shift unit 171 is connected to the second transmission 160. The differential lock unit 172 is disposed between the first axle 102 and the third disconnect 101 and is connected to the shift unit 171. The shift unit 171 is used to adjust the torque and speed output by the second transmission 160, thereby adapting the hybrid power system to a wider range of operating conditions. The differential lock unit 172 is used to lock the torque between the first axle 102 and the third disconnect 101 to prevent a single axle from being unable to output torque under extreme operating conditions.

[0041] In this embodiment of the present application, the shift unit 171 includes an eighth gear 1711, a ninth gear 1712, a tenth gear 1713, a shift paddle 1714, and a seventh intermediate shaft 1715. The eighth gear 1711, the ninth gear 1712, and the tenth gear 1713 are disposed on the seventh intermediate shaft 1715, with the shift paddle 1714 disposed between the eighth gear 1711 and the ninth gear 1712. The eighth gear 1711 and the ninth gear 1712 are configured to mesh with the second transmission device 160. Specifically, the eighth gear 1711 meshes with the fifth gear 162, and the ninth gear 1712 meshes with the sixth gear 163. The tenth gear 1713 meshes with the differential lock unit 172.

[0042] By controlling the shift paddle 1714, the eighth gear 1711 can be meshed with the fifth gear 162, thereby transmitting power between the second transmission device 160 and the speed change device 170 via the eighth gear 1711 and the fifth gear 162. Alternatively, by controlling the shift paddle 1714, the ninth gear 1712 can be meshed with the sixth gear 163, thereby transmitting power between the second transmission device 160 and the speed change device 170 via the ninth gear 1712 and the sixth gear 163. By controlling the shift paddle 1714, the eighth gear 1711 and the fifth gear 162, as well as the ninth gear 1712 and the sixth gear 163, can also be disengaged, thereby achieving neutral gear.

[0043] In some embodiments, the eighth gear 1711 and the ninth gear 1712 have different numbers of teeth to achieve a speed-changing effect that changes the rotational speed and torque. For example, by setting the number of teeth, the first speed ratio between the eighth gear 1711 and the fifth gear 162 is greater than the second speed ratio between the ninth gear 1712 and the sixth gear 163. This allows the user to select the first speed ratio when high torque is required, such as when overtaking, or to select the second speed ratio when long-term cruising is required, thereby improving the user experience. In addition, in some embodiments, the second transmission device 160 may be provided with a larger number of gears, and the speed change device 170 may be provided with a corresponding number of gears to achieve the adjustment of more speed gears and further improve the user experience. This is not limited here.

[0044] The differential lock unit 172 includes a differential lock 1721, an eighth intermediate shaft 1722, and an eleventh gear 1723. The first axle 102 is connected to the eighth intermediate shaft 1722 via the differential lock 1721. The eighth intermediate shaft 1722 is connected to the third disconnect device 101. The eleventh gear 1723 is disposed on the eighth intermediate shaft 1722. The eleventh gear 1723 is configured to mesh with the tenth gear 1713.

[0045] It can be understood that when the differential lock 1721 is not locked, the differential lock 1721 is a differential. Under normal working conditions, when the third disconnect device 101 is engaged, it can prevent the wheels of one of the axles from slipping. When facing extreme off-road conditions, locking the differential lock 1721 can prevent a single axle from having no torque output, allowing the car to quickly escape.

[0046] In some embodiments, the power system 100 further includes a controller connected to the engine transmission 140 , the first transmission 150 , the second transmission 160 , the speed change 170 , the first disconnecting device 180 , the second disconnecting device 190 and the third disconnecting device 101 .

[0047] The controller is used to control the engine transmission device 140, the first transmission device 150, the second transmission device 160, the speed change device 170, the first disconnect device 180, the second disconnect device 190 and the third disconnect device 101 to switch to corresponding working states in response to the current working mode.

[0048] That is, the controller can control the first clutch 143, the second clutch 154, the shift paddle 1714, the differential lock 1721, the first disconnect device 180, the second disconnect device 190 and the third disconnect device 101 in the above embodiment to switch to corresponding working states in response to the current working mode.

[0049] Among them, Figure 3 As shown, in response to switching to the pure electric distributed drive mode, the controller controls the first clutch 143 to be disconnected, the first disconnect device 180 to be disconnected, the second clutch 154 to be engaged, the second disconnect device 190 to be engaged, the differential lock 1721 to be engaged, the third disconnect device 101 to be disconnected, and controls the shift paddle 1714 to be switched to the corresponding gear in response to the gear position control signal ( Figure 3 The example is the gear position of the first speed ratio), at this time the vehicle operates in a pure motor distributed drive mode, the second motor 130 drives the wheels of the first axle 102, and the first motor 120 drives the wheels of the second axle 103.

[0050] like Figure 4 As shown, in response to switching to the pure oil direct drive mode, the controller controls the first clutch 143 to engage, the first disconnect device 180 to disconnect, the second clutch 154 to disconnect, the second disconnect device 190 to disconnect, the differential lock 1721 to disconnect, and the third disconnect device 101 to engage, and controls the shift paddle 1714 to switch to the corresponding gear in response to the gear control signal ( Figure 4 The example is the first speed ratio gear position), at this time the vehicle operates in pure oil direct drive mode, and the engine 110 drives the wheels of the first axle 102 and the wheels of the second axle 103 at the same time.

[0051] like Figure 5As shown, in response to switching to the single motor drive mode, the controller controls the first clutch 143 to be disconnected, the first disconnect device 180 to be disconnected, the second clutch 154 to be disconnected, the second disconnect device 190 to be engaged, the differential lock 1721 to be disconnected, the third disconnect device 101 to be engaged, and controls the shift paddle 1714 to be switched to the corresponding gear in response to the gear position control signal ( Figure 5 The example is the first speed ratio gear position), at this time the vehicle operates in a single-motor drive mode, and the second motor 130 drives the wheels of the first axle 102 and the wheels of the second axle 103 at the same time.

[0052] like Figure 6 As shown, in response to switching to the hybrid driving mode, the controller controls the first clutch 143 to engage, the first disconnect device 180 to disconnect, the second clutch 154 to disconnect, the second disconnect device 190 to engage, the differential lock 1721 to disconnect, the third disconnect device 101 to engage, and controls the shift paddle 1714 to switch to the corresponding gear in response to the gear control signal ( Figure 4 The example is the first speed ratio gear position), at this time the vehicle operates in the hybrid driving mode, and the wheels of the first axle 102 and the second axle 103 are driven by the hybrid power of the engine 110 and the second motor 130.

[0053] in, Figure 6 The hybrid driving mode shown can be applied when the battery pack of the vehicle has sufficient power. In some embodiments, when the controller detects that the power of the battery pack of the vehicle is lower than a preset value, it can also control the first disconnecting device 180 to engage in the above hybrid driving mode, so that the first motor 120 receives power from the engine 110 to generate electricity to charge the vehicle battery.

[0054] like Figure 7 As shown, in response to switching to the extended-range mode, the controller controls the first clutch 143 to be disconnected, the first disconnect device 180 to be engaged, the second clutch 154 to be disconnected, the second disconnect device 190 to be engaged, the differential lock 1721 to be disconnected, the third disconnect device 101 to be engaged, and controls the shift paddle 1714 to be switched to the corresponding gear in response to the gear position control signal ( Figure 5 The example is the first speed ratio gear position), at this time the car works in the extended range mode, the engine 110 and the second motor 130 hybrid drive the wheels of the first axle 102 and the wheels of the second axle 103, and the first motor 120 receives the power of the engine 110 to generate electricity to charge the car battery.

[0055] like Figure 8As shown, in response to switching to the off-road escape mode, the controller controls the first clutch 143 to disconnect, the first disconnecting device 180 to engage, the second clutch 154 to disconnect, the second disconnecting device 190 to engage, the differential lock 1721 to disconnect, the third disconnecting device 101 to engage, and the shift paddle 1714 to switch to the gear position of the first speed ratio with a larger speed ratio. At this time, the car is working in the off-road escape mode, and the engine 110, the first motor 120 and the second motor 130 output a mixed power with a large torque to drive the wheels of the first axle 102 and the wheels of the second axle 103, so that the car can escape from relatively bad roads.

[0056] like Figure 9 As shown, in response to switching to the energy recovery mode, the controller controls the first clutch 143 to be disconnected, the first disconnect device 180 to be disconnected, the second clutch 154 to be disconnected, the second disconnect device 190 to be engaged, the differential lock 1721 to be disconnected, the third disconnect device 101 to be engaged, and controls the shift paddle 1714 to be switched to the corresponding gear in response to the gear control signal ( Figure 3 (For example, the first gear ratio is used as an example). In this case, the vehicle operates in energy recovery mode, with second motor 130 recovering vehicle kinetic energy to charge the battery and providing braking force for vehicle deceleration. It will be appreciated that the braking force provided by energy recovery mode is gear-dependent, with greater braking force in first gear (with a higher speed ratio) and less braking force in second gear (with a lower speed ratio).

[0057] An embodiment of the present application also provides an automobile, comprising a power system of any of the above embodiments, wherein the beneficial effects that can be achieved by the automobile can refer to the corresponding beneficial effects of the power system in the above embodiments, and will not be repeated here.

[0058] An embodiment of the present application also provides a computer storage medium, which stores a computer program. When the computer program is executed by a controller, the controller responds to the switched working mode and controls the first clutch, second clutch, shift paddle, differential lock, first disconnect device, second disconnect device and third disconnect device of the power system to switch to corresponding working states.

[0059] In the above embodiments, all or part of the embodiments can be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer storage medium or transmitted via the computer storage medium. The computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0060] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When executed, the program can include the processes of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks. The technical features of this embodiment and the implementation scheme can be combined in any manner unless they conflict.

[0061] The embodiments described above are merely preferred embodiments of the present application and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements made to the technical solutions of the present application by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present application.

Claims

1. A power system, characterized in that: include: an engine, a first electric machine, a second electric machine, an engine transmission, a first transmission, a second transmission, a speed change, a first disconnect, a second disconnect, a first axle, and a second axle; The engine is connected to the first motor through the engine transmission device, the first disconnecting device and the first transmission device in sequence, the second motor is connected to the second transmission device through the second disconnecting device, the second transmission device is respectively connected to the engine transmission device and the speed change device, the speed change device is connected to the first axle, and the second axle is connected to the first transmission device.

2. The power system according to claim 1, wherein: A third disconnect device is further included, and the first axle is connected to the second axle through the third disconnect device.

3. The power system according to claim 1, wherein: The engine transmission device includes a first intermediate shaft, a second intermediate shaft, a first clutch and an engine gear; The engine is connected to the first clutch via the first intermediate shaft, and the first clutch is connected to the first disconnect device via the second intermediate shaft; The engine gear is disposed on the second intermediate shaft for meshing and connecting to the second transmission device.

4. The power system according to claim 1, wherein: The first transmission device includes a third intermediate shaft, a fourth intermediate shaft, a fifth intermediate shaft, a second clutch, a first gear, a second gear, a third gear and a fourth gear; The first motor is connected to the second clutch via the third intermediate shaft, and the second clutch is connected to the first disconnect device via the fourth intermediate shaft; The first gear is provided on the fourth intermediate shaft and is configured to be meshed and connected to the second gear; The second gear and the third gear are disposed on the fifth intermediate shaft, the third gear is used for meshing and connecting to the fourth gear; the fourth gear is disposed on the second wheel shaft.

5. The power system according to claim 1, wherein: The second transmission device includes a sixth intermediate shaft, a fifth gear, a sixth gear and a seventh gear; The second motor is connected to the sixth intermediate shaft via the second disconnect device, and the fifth gear, the sixth gear, and the seventh gear are provided on the sixth intermediate shaft; The fifth gear and the sixth gear are used for meshing and connecting to the speed change device, and the seventh gear is used for meshing and connecting to the engine transmission device.

6. The power system according to claim 2, wherein: The speed change device includes a gear unit, and the gear unit is connected to the second transmission device and the first wheel shaft; The gear unit is used to adjust the torque and speed output by the second transmission device.

7. The power system according to claim 6, characterized in that: The speed change device includes a differential lock unit, which is arranged between the first wheel shaft and the third disconnect device and connected to the gear unit; The differential lock unit is used to lock the torque between the first wheel axle and the third disconnect device.

8. The power system according to claim 7, wherein: The gear unit includes an eighth gear, a ninth gear, a tenth gear, a shift paddle and a seventh intermediate shaft; The eighth gear, the ninth gear, and the tenth gear are arranged on the seventh intermediate shaft, and the shift paddle is arranged between the eighth gear and the ninth gear; the eighth gear and the ninth gear are used to be meshed and connected to the second transmission device; the tenth gear is used to be meshed and connected to the differential lock unit.

9. The power system according to claim 8, wherein: The differential lock unit includes a differential lock, an eighth intermediate shaft and an eleventh gear. The first wheel axle is connected to the eighth intermediate shaft through the differential lock. The eighth intermediate shaft is connected to the third disconnect device. The eleventh gear is arranged on the eighth intermediate shaft; the eleventh gear is used to mesh with the tenth gear.

10. The power system according to claim 2, wherein: Also included is a controller connected to the engine transmission device, the first transmission device, the second transmission device, the speed change device, the first disconnect device, the second disconnect device, and the third disconnect device; The controller is used to control the engine transmission device, the first transmission device, the second transmission device, the speed change device, the first disconnect device, the second disconnect device and the third disconnect device to switch to corresponding working states in response to the current working mode.

11. An automobile, characterized in that: Comprising the power system according to any one of claims 1 to 10.

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