Multi-power system and automobile

Abstract

The utility model provides a multi-power system and an automobile, and relates to the technical field of automobile parts, the multi-power system comprises a first power piece, a second power piece, a first planet row structure, a second planet row structure and an intermediate gear, the first power piece and the second power piece are coaxially arranged, the second power piece is connected with the input part of the second planet row structure, the output part of the second planet row structure is connected with the intermediate gear, and the intermediate gear is meshed with the differential mechanism input gear ring. The first power piece is connected with the output part of the second planet row structure through the first planet row structure and the first on-off structure. Compared with an existing multi-power system, the multi-power system is higher in integration level, more compact in structure and light in weight.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a multi-power system and an automobile. Background Art

[0002] With the gradual development of automobile technology, single-power systems are gradually unable to meet the diverse needs of users due to their single working mode. Therefore, multi-power systems are gaining more and more attention. A multi-power system refers to a system that includes at least two power parts, which can be motors or engines. In existing multi-power systems, in addition to the two power parts, two planetary gear structures are generally included, which can increase the torque output by the corresponding power parts.

[0003] In order to ensure that the two power components output power in parallel to the differential input ring gear, it is usually necessary that the two power components have their respective transmission paths independent of each other before transmitting power to the differential input ring gear. This requires more gear structures to be involved, that is, more gear structures are required to serve as connecting structures between the two planetary gear structures and the differential input ring gear, which in turn leads to low integration and heavy overall weight of the existing multi-power system. Utility Model Content

[0004] The utility model aims to solve the problems of low integration and large overall weight of the existing multi-power system.

[0005] To solve the above problems, the utility model provides a multi-power system, including a first power member, a second power member, a first planetary gear structure, a second planetary gear structure and an intermediate gear, the first power member and the second power member are coaxially arranged, the second power member is connected to the input part of the second planetary gear structure, the output part of the second planetary gear structure is connected to the intermediate gear, the intermediate gear is used to engage with the differential input ring gear, and the first power member is connected to the output part of the second planetary gear structure through the first planetary gear structure and the first on-off structure.

[0006] Compared with the prior art, the multi-power system provided by the utility model has but is not limited to the following technical effects:

[0007] Since the first power member is connected to the output part of the second planetary gear structure through the first planetary gear structure and the first on-off structure, the multi-power system can connect the output part of the first planetary gear structure with the output part of the second planetary gear structure through the first on-off structure when performing power output in parallel. Then, the power of the second power member is first transmitted to the input part of the second planetary gear structure, and then transmitted from the output part of the second planetary gear structure to the intermediate gear, and finally transmitted to the differential input ring gear by the intermediate gear; at the same time, the power of the first power member can also be transmitted to the output part of the second planetary gear structure through the first planetary gear structure and the first on-off structure, and then transmitted from the output part of the second planetary gear structure to the intermediate gear, and finally transmitted to the differential input ring gear by the intermediate gear. Among them, when the first power member and the second power member are outputting power in parallel, their respective power transmission paths, before being transmitted to the differential input ring gear, share the output part of the second planetary gear structure and an intermediate gear for power path transmission, thereby achieving the effect of outputting the power of the two power members in parallel to the differential input ring gear through only one intermediate gear, and the number of intermediate gears used to connect the planetary gear structure and the differential input ring gear is reduced, and the weight is lighter and the cost is lower; and, since the first power member and the second power member are coaxially arranged, not only can it be ensured that the power of the two power members can be output in parallel to the differential input ring gear, but also the integration of the multi-power system in the direction perpendicular to the axial direction of the first power member can be improved. Moreover, since the power of the two power members can be output in parallel to the differential input ring gear through only one intermediate gear, the two coaxially arranged power members and the two planetary gear structures can also be more compact in the axial direction, thereby improving the axial integration. When the multi-power system requires a single power output, the first planetary gear structure can be separated from the second planetary gear structure through the first on-off structure, and then the single power output can be performed through the second power member, thereby realizing multiple working modes of the multi-power system.

[0008] Further, the first power component is a first motor, the second power component is a second motor, the rotor of the second motor is connected to the input part of the second planetary gear structure, the rotor of the first motor is connected to the input part of the first planetary gear structure, and the output part of the first planetary gear structure is connected to the output part of the second planetary gear structure through the first on-off structure; and, at least part of the first planetary gear structure is located in the rotor of the first motor in the axial direction, and / or at least part of the second planetary gear structure is located in the rotor of the second motor in the axial direction.

[0009] Furthermore, the multi-power system also includes a third power component, which is an engine, and an engine input shaft of the engine is connected to the output part of the second planetary gear structure through a first on-off structure.

[0010] Furthermore, the multi-power system also includes a fixed shell, the first planetary gear structure includes a first planetary carrier, a first planetary gear, a first sun gear and a first ring gear, the first ring gear is fixedly connected to the rotor of the first motor, the first sun gear is fixedly connected to the fixed shell, the first planetary gear is movably mounted on the first planetary carrier, the first planetary carrier is connected to the first part of the first on-off structure, and the second part of the on-off structure is connected to the output part of the second planetary gear structure.

[0011] Furthermore, the multi-power system also includes a third power component, which is an engine. The engine input shaft of the engine is coaxially fixed with the first planetary carrier, and the engine input shaft is movably arranged in the first sun gear.

[0012] Furthermore, the multi-power system also includes a second on-off structure and a fixed shell, the second planetary gear structure includes a second planetary carrier, a second planetary gear, a second sun gear and a second ring gear, the second sun gear is fixedly connected to the rotor of the second motor, the second planetary gear is movably mounted on the second planetary carrier, the second planetary carrier is connected to the fixed shell through the second on-off structure, and the second on-off structure is used to make the second planetary carrier relatively engaged or separated from the fixed shell.

[0013] Furthermore, the multi-power system also includes an output cylinder and an output ring gear, wherein both ends of the output cylinder are respectively connected to the second ring gear and the first planetary gear structure, the output ring gear is fixed to the outer wall of the output cylinder, and the output ring gear is meshed with the intermediate gear.

[0014] Further, the first planet carrier is connected to the output tube via the first on-off structure, and the first on-off structure is used to make the first planet carrier and the output tube relatively engaged or separated.

[0015] Further, the intermediate gear comprises an intermediate large gear and an intermediate small gear which are coaxially fixed, the intermediate large gear is meshed with the output ring gear, and the intermediate small gear is meshed with the differential input ring gear.

[0016] The utility model also provides a car, comprising the multi-power system as mentioned above.

[0017] Since the technical improvements and technical effects of the automobile are the same as those of the multi-power system, the automobile will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the multi-power system of the present utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the multi-power system of the present utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the power transmission path of the multi-power system in the second working mode of the embodiment of the utility model;

[0021] Figure 4 A schematic diagram of a power transmission path of a multi-power system in a first working mode according to an embodiment of the utility model;

[0022] Figure 5 A schematic diagram of a power transmission path of a multi-power system in a third working mode according to an embodiment of the utility model;

[0023] Figure 6 A schematic diagram of a power transmission path of a multi-power system in a fourth working mode according to an embodiment of the utility model;

[0024] Figure 7 A schematic diagram of a power transmission path of a multi-power system in a fifth working mode of an embodiment of the utility model;

[0025] Figure 8 Schematic diagram of the power transmission path of the multi-power system of the embodiment of the utility model in the sixth working mode.

[0026] Fig. 9 Schematic diagram of the power transmission path of the multi-power system of the embodiment of the utility model in the seventh working mode.

[0027] Description of reference numerals:

[0028] 11. First power member; 12. Second power member; 13. Engine; 131. Engine input shaft; 21. First planetary gear arrangement; 211. First planetary carrier; 212. First planetary gear; 213. First sun gear; 214. First ring gear; 22. Second planetary gear arrangement; 221. Second planetary carrier; 222. Second planetary gear; 223. Second sun gear; 224. Second ring gear; 23. Fixed housing; 24. First on-off structure; 25. Second on-off structure; 26. Output cylinder; 27. Output ring gear; 28. Intermediate gear; 281. Intermediate large gear; 282. Intermediate small gear; 29. ​​Differential assembly; 291. Differential input ring gear; 292. Differential half-shaft gear; 31. Battery. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0030] The X-axis in the drawings represents the horizontal direction and is designated as the front-to-back position, and the positive direction of the X-axis represents the front side, and the reverse direction of the X-axis represents the rear side; the Y-axis in the drawings represents the left-to-right position, and the positive direction of the Y-axis represents the left side, and the reverse direction of the Y-axis represents the right side. It should also be noted that the aforementioned Y-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0032] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0033] See also Figure 1-2 A multi-power system of an embodiment of the utility model includes a first power member 11, a second power member 12, a first planetary gear structure 21, a second planetary gear structure 22 and an intermediate gear 28. The first power member 11 and the second power member 12 are coaxially arranged, the second power member 12 is connected to the input part of the second planetary gear structure 22, the output part of the second planetary gear structure 22 is connected to the intermediate gear 28, and the intermediate gear 28 is used to engage with the differential input ring gear 291. The first power member 11 is connected to the output part of the second planetary gear structure 22 through the first planetary gear structure 21 and the first on-off structure 24.

[0034] In this embodiment, since the first power member 11 is connected to the output part of the second planetary gear structure 22 through the first planetary gear structure 21 and the first on-off structure 24, when the multi-power system is outputting power in parallel, the output part of the first planetary gear structure 21 can be connected with the output part of the second planetary gear structure 22 through the first on-off structure 24. Then, the power of the second power member 12 is first transmitted to the input part of the second planetary gear structure 22, and then transmitted from the output part of the second planetary gear structure 22 to the intermediate gear 28, and finally transmitted by the intermediate gear 28 to the differential input ring gear 291; at the same time, the power of the first power member 11 can also be transmitted to the output part of the second planetary gear structure 22 through the first planetary gear structure 21 and the first on-off structure 24, and then transmitted from the output part of the second planetary gear structure 22 to the intermediate gear 28, and finally transmitted by the intermediate gear 28 to the differential input ring gear 291.

[0035] Among them, when the first power member 11 and the second power member 12 output power in parallel, their respective power transmission paths share the output part of the second planetary gear structure 22 and an intermediate gear 28 for power path transmission before being transmitted to the differential input ring gear 291, so that the power of the two power members can be output in parallel to the differential input ring gear 291 only through the intermediate gear 28, and the number of intermediate gears 28 used to receive the power between the planetary gear structure and the differential input ring gear 291 is reduced, the weight is light, the cost is low, and, as Figure 2 As shown, the first power member 11 and the second power member 12 are coaxially arranged, which not only ensures that the power of the two power members can be output in parallel to the differential input ring gear 291, but also improves the integration of the multi-power system in the direction perpendicular to the axial direction of the first power member 11. Since the power of the two power members can be output in parallel to the differential input ring gear 291 through only one intermediate gear 28, the two coaxially arranged power members and the two planetary gear structures can also be more compact in the axial direction, thereby improving the axial integration.

[0036] When the multi-power system requires a single power output, the first planetary gear structure 21 and the second planetary gear structure 22 can be separated by the first on-off structure 24, and then the single power output can be performed by the second power member 22, thereby realizing multiple working modes of the multi-power system.

[0037] It should be noted that in the prior art, the planetary gear structure is usually composed of four parts, namely, the planetary carrier, the planetary gear, the sun gear and the ring gear. The planetary gear sleeve is arranged on the planetary carrier, and the planetary gear is meshed with the sun gear and the ring gear respectively. When any one of the planetary carrier, the sun gear and the ring gear is fixed, the other two parts are respectively used as the active part and the passive part. The active part can also be called the input part of the planetary gear structure, and the passive part can be called the output part of the planetary gear structure. I will not explain it in detail here.

[0038] In this embodiment, when the first power member 11 and the second power member 12 are outputting power in parallel, the power transmission path of the second power member 12 is: the second power member 12-the input part of the second planetary gear 22 structure-the output part of the second planetary gear 222 structure-the intermediate gear 28-the differential input ring gear 291; the power transmission path of the first power member 11 is: the first power member 11-the first planetary gear 21-the output part of the second planetary gear 22 structure-the intermediate gear 28-the differential input ring gear 291. It can be seen that when the two power members are outputting power in parallel, the power path of "the output part of the second planetary gear 222 structure-the intermediate gear 28" is shared, and there is no need to add an additional intermediate gear 28 to undertake the power transmission between the first planetary gear 21 and the differential input ring gear 291.

[0039] It should be noted that the differential input ring gear 291 is the input part of the differential assembly 29 for receiving external power. The differential assembly 29 also includes an output part for outputting power, which is a differential half-shaft gear 292. One of the two differential half-shaft gears 292 is fixed on the left half-shaft of the car, and the other of the two differential half-shaft gears 292 is fixed on the right half-shaft of the car. When the power of the power member is transmitted to the differential input ring gear 291, the differential input ring gear 291 further distributes the power to the left half-shaft and the right half-shaft of the car, so that the left half-shaft and the right half-shaft of the car rotate to realize the driving of the car. The specific structure of the differential assembly 29 is not within the scope of improvement of the present utility model, and can be a prior art, which will not be described in detail here.

[0040] It should be noted that, in this embodiment, the first power member 11 and the second power member 12 may both be motors; or both may be engines 13 ; or one of them may be a motor and the other may be an engine 13 .

[0041] Alternatively, see Figure 2The first power member 11 is a first motor, the second power member 12 is a second motor, the rotor of the second motor is connected to the input part of the second planetary gear structure 22, the rotor of the first motor is connected to the input part of the first planetary gear structure 21, and the output part of the first planetary gear structure 21 is connected to the output part of the second planetary gear structure 22 through the first on-off structure 24; and, at least part of the first planetary gear structure 21 is axially located in the rotor of the first motor, and / or, at least part of the second planetary gear structure 22 is axially located in the rotor of the second motor.

[0042] In this embodiment, the first power member 11 is a first motor, and the second power member 12 is a second motor. The first motor and the second motor can adopt a larger cavity design, so that the first planetary gear structure 21 can be at least partially located in the cavity of the first motor in the axial direction, that is, the first planetary gear structure 21 can be at least partially located in the rotor of the first motor in the axial direction; the second planetary gear structure 22 can be at least partially located in the cavity of the second motor in the axial direction, that is, the second planetary gear structure 22 can be at least partially located in the rotor of the second motor in the axial direction, thereby further improving the axial integration of the multi-power system, and the shaft system design is more compact and reasonable, which is conducive to obtaining a larger layout space for other structures.

[0043] In the present embodiment, since the first power member 11 and the second power member 12 are both motors, they can be driven simultaneously by a single motor or two motors. Under the condition of achieving the same motor output power, the simultaneous output of the two motors can reduce the size of a single motor, reduce weight, and reduce costs compared to the single motor output in the prior art, and have better power performance under the same conditions.

[0044] In order to avoid confusion and facilitate understanding of the technical solution of the present utility model, the first power member 11 is hereinafter described as the first motor, and the second power member 12 is hereinafter described as the second motor.

[0045] Alternatively, see Figure 1-2 The multi-power system further includes a third power component, which is an engine 13 , and an engine input shaft 131 of the engine 13 is connected to an output portion of the second planetary gear structure 22 through the first on-off structure 24 .

[0046] In this embodiment, the multi-power system has three power parts, namely, two motors and an engine 13. Like the first motor, the engine 13 can also be connected to the output part of the second planetary gear structure 22 through the first on-off structure 24, that is, the engine input shaft 131 and the output part of the first planetary gear structure 21 are both connected to the output part of the second planetary gear structure 22 through the first on-off structure 24. Here, the engine input shaft 131 can be fixedly arranged with the output part of the first planetary gear structure 21; on this basis, one of the engine input shaft 131 and the output part of the first planetary gear structure 21 is connected to the output part of the second planetary gear structure through the first on-off structure 24, which also realizes that "the engine input shaft 131 and the output part of the first planetary gear structure 21 are both connected to the output part of the second planetary gear structure 22 through the first on-off structure 24". In this way, the multi-power system can realize the parallel output of the three power parts. When the three power parts output power in parallel, the power can be transmitted to the differential input ring gear 291 only through an intermediate gear 28, thereby improving the integration of the multi-power system. At this time, since the multi-power system includes both a motor and an engine 13, the multi-power system can also be called a hybrid power system.

[0047] Alternatively, see Figure 1-2 The multi-power system also includes a fixed housing 23, the first planetary gear structure 21 includes a first planetary carrier 211, a first planetary gear 212, a first sun gear 213 and a first ring gear 214, the first ring gear 214 is fixedly connected to the rotor of the first motor, the first sun gear 213 is fixedly connected to the fixed housing 23, the first planetary gear 212 is movably mounted on the first planetary carrier 211, the first planetary carrier 211 is connected to a first part of the first on-off structure 24, and a second part of the first on-off structure 24 is connected to an output part of the second planetary gear structure 22.

[0048] In this embodiment, specifically, the first gear ring 214 is coaxially located in the rotor of the first motor, and the first gear ring 214 is fixedly connected to the rotor of the first motor, the first sun gear 213 is fixedly connected to the fixed housing 23, and is the fixed part of the first planetary gear structure 21, and the first planetary gear carrier 211 is connected to the output part of the second planetary gear structure 22. In this way, when the first motor is used as an electric motor to output power, the first gear ring 214 of the first planetary gear structure 21 is the input part of the first planetary gear structure 21, and the first planetary gear carrier 211 of the first planetary gear structure 21 is the output part of the first planetary gear structure 21. At this time, the first planetary gear structure 21 realizes the deceleration and torque increase effect on the first motor.

[0049] In this embodiment, the first planet carrier 211 is connected to the first part of the first on-off structure 24, and the second part of the first on-off structure 24 is connected to the output part of the second planetary gear structure 22; the first on-off structure 24 can be a clutch. When the first part and the second part of the clutch are engaged, the first planet carrier 211 and the output part of the second planetary gear structure 22 are relatively engaged, and the power of multiple power parts can be output in parallel. When the first part and the second part of the clutch are disconnected, the output part of the first planet carrier 211 and the second planetary gear structure 22 are separated. At this time, the second motor can perform single-motor pure electric output, and ensure that the power output of the second motor will not load the first planetary gear structure 21, so that the power of the second motor is completely output to the differential input ring gear 291 through the second planetary gear structure 22, and the efficiency of the second motor is high.

[0050] Alternatively, see Figure 1-2 The multi-power system also includes a third power component, which is an engine 13. The engine input shaft 131 of the engine 13 is coaxially fixed with the first planetary carrier 211, and the engine input shaft 131 is movably arranged in the first sun gear 213 (when the engine is working, the engine input shaft 131 can rotate relative to the first sun gear 213).

[0051] In this embodiment, when the engine 13 is present, the engine input shaft 131 is coaxially fixed to the first planetary carrier 211 of the first planetary gear structure 21, and is used to connect to the output part of the second planetary gear structure 22, so that the power of the engine 13 can also be transmitted to the differential input ring gear 291 via the output part of the second planetary gear structure 22, and the engine input shaft 131 is movably arranged in the first sun gear 213, thereby improving the radial integration of the multi-power system.

[0052] Alternatively, see Figure 1-2 The multi-power system also includes a second on-off structure 25 and a fixed housing 23. The second planetary gear structure 22 includes a second planetary carrier 221, a second planetary gear 222, a second sun gear 223 and a second ring gear 224. The second sun gear 223 is fixedly connected to the rotor of the second motor. The second planetary gear 222 is movably mounted on the second planetary carrier 221. The second planetary carrier 221 is connected to the fixed housing 23 through the second on-off structure 25. The second on-off structure 25 is used to make the second planetary carrier 221 relatively engaged or separated from the fixed housing 23, wherein the second sun gear 223 is the input part of the second planetary gear structure 22, and the second ring gear 224 can be used as the output part of the second planetary gear structure 22.

[0053] In this embodiment, the second sun gear 223 of the second planetary gear structure 22 is fixed to the rotor of the second motor, the second planetary carrier 221 can be fixed to the fixed housing 23, and the second ring gear 224 is drivingly connected to the intermediate gear 28. In this way, when the second motor is used as an electric motor to output power, the second sun gear 223 is the input part of the second planetary gear structure 22, and the second ring gear 224 is the output part of the second planetary gear structure 22. At this time, the second planetary gear structure 22 decelerates and increases the torque of the second motor. Moreover, compared with the prior art in which the planetary carrier is used as the output part, the second planetary gear structure 22 of this embodiment uses the second ring gear 224 as the output part, which can enable the second planetary gear structure 22 to obtain a larger transmission ratio.

[0054] Among them, the second on-off structure 25 can be a brake, which is arranged on the fixed shell 23, used to lock and fix the second planetary carrier 221 (at this time the second planetary carrier 221 is relatively engaged with the fixed shell 23), and can also release the second planetary carrier 221 (at this time the second planetary carrier 221 is separated from the fixed shell 23).

[0055] Alternatively, see Figure 1-2 The multi-power system also includes an output tube 26 and an output ring gear 27. The two ends of the output tube 26 are respectively connected to the second ring gear 224 and the first planetary gear structure 21. The output ring gear 27 is fixed to the outer wall of the output tube 26, and the output ring gear 27 is meshed with the intermediate gear 28.

[0056] In this embodiment, the first planetary gear structure 21 is not directly connected to the output part of the second planetary gear structure 22, but is indirectly connected through the output tube 26. The outer wall of the output tube 26 is fixed with an output ring gear 27, and the output ring gear 27 is meshed with the differential input ring gear 291. Through the output tube 26, the second ring gear 224, the first planetary carrier 211 of the first planetary gear structure 21 and the intermediate gear 28 can be reasonably and effectively connected, and the integration is relatively high.

[0057] See also Figure 1Optionally, the first planet carrier 211 is connected to the output tube 26 through the first on-off structure 24, and the first on-off structure 24 is used to make the first planet carrier 211 relatively engaged with or separated from the output tube 26. Here, the first planet carrier 211 serves as the output part of the first planetary gear structure 21, and is connected to the output tube 26 through the first on-off structure 24; when the first on-off structure 24 relatively engages the first planet carrier 211 with the output tube 26, the first planet carrier 211 is relatively engaged with the output part of the second planetary gear structure 22 (specifically, the second gear ring 224); when the first on-off structure 24 separates the first planet carrier 211 from the output tube 26, the first planet carrier 211 is separated from the output part of the second planetary gear structure 22 (specifically, the second gear ring 224).

[0058] Alternatively, see Figure 1-2 The intermediate gear 28 includes an intermediate large gear 281 and an intermediate small gear 282 which are coaxially fixed. The intermediate large gear 281 is meshed with the output ring gear 27 , and the intermediate small gear 282 is used to mesh with the differential input ring gear 291 of the differential assembly 29 .

[0059] In this embodiment, the intermediate gear 28 is meshed with the output ring gear 27 through the intermediate large gear 281, and the intermediate gear 28 is meshed with the differential input ring gear 291 through the intermediate small gear 282. When power is output, in addition to deceleration and torque increase through the first planetary gear structure 21 and the second planetary gear structure 22, further deceleration and torque increase can be performed through the intermediate gear 28 itself.

[0060] To sum up, a multi-power system of the utility model, in a specific embodiment, may include a first motor, a second motor, an engine 13, a first planetary gear structure 21, a second planetary gear structure 22, a first on-off structure 24, a second on-off structure 25, an output tube 26, an output gear ring 27 and a fixed housing 23. The second planetary row structure 22 includes a second planetary carrier 221, a second planetary gear 222, a second sun gear 223 and a second ring gear 224, the second sun gear 223 is fixedly connected to the rotor of the second motor, the second planetary gear 222 is movably mounted on the second planetary carrier 221, and the second planetary carrier 221 is connected to the fixed housing 23 through a second on-off structure 25; the first planetary row structure 21 includes a first planetary carrier 211, a first planetary gear 212, a first sun gear 213 and a first ring gear 214, the first ring gear 214 is fixedly connected to the rotor of the first motor, the first sun gear 213 is fixedly connected to the fixed housing 23, the first planetary gear 212 is movably mounted on the first planetary carrier 211, the first planetary carrier 211 is connected to one end of the output tube 26 through the first on-off structure 24, the other end of the output tube 26 is fixedly connected to the second ring gear 224, the output ring gear 27 is fixed to the outer wall of the output tube 26, and the output ring gear 27 is meshed with the intermediate gear 28. The first on-off structure 24 is a clutch, and the second on-off structure 25 is a brake.

[0061] This multi-power system can achieve switching between the following multiple working modes by adjusting the states of the clutch and the brake, and the control difficulty is relatively low.

[0062] like Figure 4 The first working mode shown (also called pure electric single motor mode). In this mode, the second motor is used as an electric motor, the battery 31 of the car supplies power to the second motor so that the second motor outputs power, and the second planetary carrier 221 is fixed by the brake (second on-off structure 25), and is disconnected by the clutch (first on-off structure 24) to separate the first planetary carrier 211 from the output cylinder 26 (which is equivalent to separating the first planetary carrier 211 from the second ring gear 224). The power transmission path in this mode is: second motor-second sun gear 223-second planetary gear 222-second ring gear 224-output cylinder 26-output ring gear 27-intermediate gear 28-differential input ring gear 291-differential side gear 292. Figure 4 The direction of the solid arrow in the middle refers to the direction of the power transmission path, and the direction of the non-solid arrow refers to the direction of power transmission. This mode is suitable for the starting stage of the car, because pure electric drive can provide faster and smoother power output, while also reducing noise and exhaust emissions. However, engine 13 drive may cause a bumpy feeling, noise and exhaust emissions when starting.

[0063] like Figure 3The second working mode shown (also called series mode, or extended range mode). In this mode, the second motor is used as an electric motor, the first motor is used as a generator, and the second planetary carrier 221 is fixed by a brake, and the first planetary carrier 211 is disconnected from the output cylinder 26 by a clutch (which is equivalent to separating the first planetary carrier 211 from the second ring gear 224). The power transmission path in this mode is: engine 13-first planetary carrier 211-first planetary gear 212-first ring gear 214-first motor (first motor generates electricity); after the first motor generates electricity, the electricity can be stored in the battery 31 first, and then the battery 31 supplies power to the second motor, or the first motor directly supplies power to the second motor after generating electricity. After that, the power transmission path is: second motor-second sun gear 223-second planetary gear 222-second ring gear 224-output cylinder 26-output ring gear 27-intermediate gear 28-differential input ring gear 291-differential side gear 292. Figure 3 The direction of the solid arrow refers to the power transmission path direction, and the direction of the non-solid arrow refers to the power transmission direction. When the battery 31 of the car is low in power, it can be switched to this mode to improve the fuel economy of the system.

[0064] In addition, in the first working mode and the second working mode, since the clutch is in a disconnected state, the second motor does not need to drive the first planetary gear structure 21 to move, but only needs to drive the intermediate gear 28 to rotate through the second planetary gear structure 22, and the efficiency of the second motor will be higher.

[0065] like Figure 5 The third operating mode (also called hybrid parallel mode) is shown. In this mode, the brake brakes and fixes the second planetary carrier 221, the clutch engages to fix the first planetary carrier 211 and the output tube 26, the second motor is used as a motor, and the engine 13 also outputs power to the intermediate gear 28. The power transmission path of the second motor is: second motor-second sun gear 223-second planetary gear 222-second ring gear 224-output ring gear 27-intermediate gear 28-differential input ring gear 291-differential half-shaft gear 292; a part of the power transmission path of the engine 13 is: engine 13-first planetary carrier 211-output tube 26-output ring gear 27-intermediate gear 28-differential input ring gear 291-differential half-shaft gear 292; another part of the power transmission path of the engine 13 is: engine 13-first planetary carrier 211-first planetary gear 212-first ring gear 214-first motor (the first motor is used as a generator at this time), after the engine 13 enables the first motor to generate electricity, the power of the first motor can be stored in the battery 31. Figure 5 The direction of the solid arrow refers to the direction of the power transmission path, and the direction of the non-solid arrow refers to the direction of power transmission.

[0066] like Figure 6 The fourth working mode shown (also called the engine 13 direct drive mode) is as follows. In this mode, the brake releases the second planetary carrier 221 and the clutch is engaged. In this mode, the power transmission path is: engine 13-first planetary carrier 211-output cylinder 26-output ring gear 27-intermediate gear 28-differential input ring gear 291-differential side gear 292. Figure 6 The direction of the solid arrow in the middle refers to the direction of the power transmission path, and the direction of the non-solid arrow refers to the direction of power transmission. When the car is in high-speed working condition, this mode can be used.

[0067] like Figure 7 The fifth working mode (also called full power mode) is shown. In this mode, the brake fixes the second planetary carrier 221, the clutch is engaged, and the first motor and the second motor are both used as motors. In this mode, the battery 31 supplies power to the first motor and the second motor respectively, and the power transmission path of the second motor is: the second motor-the second sun gear 223-the second planetary gear 222-the second ring gear 224-the output cylinder 26-the output ring gear 27-the intermediate gear 28-the differential input ring gear 291-the differential axle gear 292; the power transmission path of the first motor is: the first motor-the first ring gear 214-the first planetary gear 212-the first planetary carrier 211-the output cylinder 26-the output ring gear 27-the intermediate gear 28-the differential input ring gear 291-the differential axle gear 292; the power path of the engine 13 is: the engine 13-the first planetary carrier 211-the output cylinder 26-the output ring gear 27-the intermediate gear 28-the differential input ring gear 291-the differential axle gear 292. Figure 7 The direction of the solid arrow refers to the direction of the power transmission path, and the direction of the non-solid arrow refers to the direction of power transmission. This mode can be used when the car needs to accelerate suddenly, overtake, or climb a hill. It should be noted that in this mode, the first ring gear 214 of the first planetary gear structure 21 serves as the input part of the first planetary gear structure 21, and the first planet carrier 211 serves as the output part of the first planetary gear structure 21. At this time, the first planetary gear structure 21 decelerates and increases the torque of the first motor.

[0068] like Figure 8 The sixth working mode (also called idle charging mode or parking charging mode) is shown. In this mode, the clutch is disconnected and the first motor is used as a generator. The power path of the engine 13 is: engine 13-first planetary carrier 211-first planetary gear 212-first ring gear 214-first motor. Figure 8The direction of the solid arrow refers to the direction of the power transmission path, and the direction of the non-solid arrow refers to the direction of power transmission. It should be noted that in this mode, the first planetary carrier 211 of the first planetary gear structure 21 serves as the input part of the first planetary gear structure 21, and the first ring gear 214 serves as the output part of the first planetary gear structure 21. At this time, the first planetary gear structure 21 speeds up the engine 13, which can increase the power generation of the first motor and reduce the fuel consumption of the engine 13 compared with the prior art.

[0069] like Fig. 9 The seventh working mode (also called energy recovery mode) is shown. In this mode, the clutch is engaged and the brake brakes the second planetary carrier 221 to be fixed. When the car decelerates or goes downhill, the inertial motion of the wheels can enable the first motor and the second motor to generate electricity, and a part of the power transmission path of the wheels is: differential half-shaft gear 292-differential input gear-intermediate gear 28-output ring gear 27-output cylinder 26-second ring gear 224-second planetary gear 222-second sun gear 223-second motor (the second motor generates electricity at this time); another part of the power transmission path of the wheels is: differential half-shaft gear 292-differential input gear-intermediate gear 28-output ring gear 27-output cylinder 26-first planetary carrier 211-first planetary gear 212-first ring gear 214-first motor (the first motor also generates electricity at this time). Fig. 9 The direction of the solid arrow refers to the direction of the power transmission path, and the direction of the non-solid arrow refers to the direction of power transmission.

[0070] In summary, in the multi-power system of the utility model, two sets of planetary gear structures are arranged between the dual motors, and physical decoupling and functional decoupling of different working conditions are achieved through clutches and brakes, which reduces the control difficulty and can achieve multiple modes such as pure electric mode, series mode, parallel mode, engine 13 direct drive mode, full power mode, and idle charging. The two planetary gear structures can be the same sun gear, the same planetary gear, and the same ring gear. There is no need to use complex gears and clutch systems, which reduces the number of transmission parts developed, reduces the difficulty of production and manufacturing, improves process feasibility, reliability and durability, and can also reduce after-sales maintenance costs. In addition, both the first motor and the second motor can use high-speed motors, which are smaller in size and can improve their power density.

[0071] Another embodiment of the present invention further provides a car, comprising the multi-power system as described above.

[0072] Since the technical improvements and technical effects of the automobile are the same as those of the multi-power system, the automobile will not be described in detail.

[0073] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0074] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A multi-power system, characterized in that: The invention comprises a first power member (11), a second power member (12), a first planetary gear structure (21), a second planetary gear structure (22) and an intermediate gear (28); the first power member (11) and the second power member (12) are coaxially arranged; the second power member (12) is connected to the input part of the second planetary gear structure (22); the output part of the second planetary gear structure (22) is connected to the intermediate gear (28); the intermediate gear (28) is used to mesh with a differential input gear ring (291); the first power member (11) is connected to the output part of the second planetary gear structure (22) via the first planetary gear structure (21) and a first on-off structure (24).

2. The multi-power system according to claim 1, characterized in that: The first power member (11) is a first motor, the second power member (12) is a second motor, the rotor of the second motor is connected to the input part of the second planetary gear structure (22), the rotor of the first motor is connected to the input part of the first planetary gear structure (21), the output part of the first planetary gear structure (21) is connected to the output part of the second planetary gear structure (22) via the first on-off structure (24); and at least part of the first planetary gear structure (21) is located in the rotor of the first motor in the axial direction, and / or at least part of the second planetary gear structure (22) is located in the rotor of the second motor in the axial direction.

3. The multi-power system according to claim 2, characterized in that: It also includes a third power component, which is an engine (13), and an engine input shaft (131) of the engine (13) is connected to the output part of the second planetary gear structure (22) through the first on-off structure (24).

4. The multi-power system according to claim 2, characterized in that: The invention also comprises a fixed housing (23), wherein the first planetary gear structure (21) comprises a first planetary carrier (211), a first planetary gear (212), a first sun gear (213) and a first ring gear (214), wherein the first ring gear (214) is fixedly connected to the rotor of the first motor, the first sun gear (213) is fixedly connected to the fixed housing (23), the first planetary gear (212) is movably sleeved on the first planetary carrier (211), the first planetary carrier (211) is connected to a first part of the first on-off structure (24), and the second part of the first on-off structure (24) is connected to an output part of the second planetary gear structure (22).

5. The multi-power system according to claim 4, characterized in that: The invention also comprises a third power component, wherein the third power component is an engine (13), an engine input shaft (131) of the engine (13) is coaxially fixed with the first planet carrier (211), and the engine input shaft (131) is movably arranged in the first sun gear (213).

6. The multi-power system according to claim 4, characterized in that: The invention also comprises a second on-off structure (25) and a fixed housing (23); the second planetary gear structure (22) comprises a second planetary carrier (221), a second planetary gear (222), a second sun gear (223) and a second ring gear (224); the second sun gear (223) is fixedly connected to the rotor of the second motor; the second planetary gear (222) is movably sleeved on the second planetary carrier (221); the second planetary carrier (221) is connected to the fixed housing (23) via the second on-off structure (25); the second on-off structure (25) is used to enable the second planetary carrier (221) to engage with or separate from the fixed housing (23) relative to each other.

7. The multi-power system according to claim 6, characterized in that: It also includes an output cylinder (26) and an output gear ring (27), the two ends of the output cylinder (26) are respectively connected to the second gear ring (224) and the first planetary gear structure (21), the output gear ring (27) is fixed to the outer wall of the output cylinder (26), and the output gear ring (27) is meshed with the intermediate gear (28).

8. The multi-power system according to claim 7, characterized in that: The first planet carrier (211) is connected to the output tube (26) via the first on-off structure (24), and the first on-off structure (24) is used to enable the first planet carrier (211) and the output tube (26) to be relatively engaged or separated.

9. The multi-power system according to claim 7, characterized in that: The intermediate gear (28) comprises an intermediate large gear (281) and an intermediate small gear (282) which are coaxially fixed, the intermediate large gear (281) meshing with the output ring gear (27), and the intermediate small gear (282) meshing with the differential input ring gear (291).

10. An automobile, characterized in that: Comprising a multi-power system as described in any one of claims 1-9.

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