CN111823853A - Dual drive system and vehicle - Google Patents

Abstract

The invention discloses a dual-drive system and a vehicle, wherein the dual-drive system comprises: a motor assembly, the motor assembly comprising: the motor comprises a first motor and a second motor, wherein the first motor is positioned on the left side, the second motor is positioned on the right side, and a motor shell of the first motor and a motor shell of the second motor are constructed into double motor shells; a speed reducer assembly, the speed reducer assembly comprising: the first speed reducer is located on the left side of the first motor and connected with the first motor, and the second speed reducer is located on the right side of the second motor and connected with the second motor. According to the wheel-side dual-power driving system, the shell of the first motor and the shell of the second motor are constructed into the dual-motor shell, so that the dual-power driving system is compact in structure, high in reliability and good in applicability.

Description

Dual drive system and vehicle

technical field

The invention relates to the field of automobiles, in particular to a dual driving force system and a vehicle.

Background technique

In the related art, the design of the joints of each part in the dual-wheel drive system is very simple, the installation is complicated, the overall arrangement is not compact enough, and the free space is large. At the same time, the first-level reduction mechanism of the existing dual-wheel drive system cannot meet the high rotational speed. Motor demand, poor applicability.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to propose a dual-drive system, in which the housing of the first motor and the housing of the second motor are configured as dual-motor housings, so that the dual-power drive system can be driven Compact structure, high reliability and good applicability.

The present invention also provides a vehicle having the above-mentioned dual driving force system.

The dual drive power system according to the present invention includes: a motor assembly including: a first motor on the left side and a second motor on the right side, and a motor housing of the first motor is connected to the second motor on the right side. The motor casing of the two motors is constructed as a double motor casing; a reducer assembly, the reducer assembly includes: a first reducer and a second reducer, the first reducer is located on the left side of the first motor The second speed reducer is located on the right side of the second motor and is connected to the second motor.

According to the dual driving force system of the present invention, by configuring the motor housing of the first motor and the motor housing of the second motor as dual motor housings, the arrangement of the first motor and the second motor is more compact, and the dual drive is improved. The space utilization rate of the power system simplifies the arrangement and connection between the first motor and the second motor in the dual drive system, ensures the stability and reliability of the dual drive system, and enhances the applicability of the dual drive system.

According to an embodiment of the present invention, the double motor housing includes: an outer casing defining a motor installation space; a baffle plate, the baffle plate being disposed in the outer casing to separate the motor installation space A first motor installation space and a second motor installation space; wherein the rotor and stator of the first motor are arranged in the first motor installation space, and the rotor and stator of the second motor are arranged in the second installation space within the space.

According to an embodiment of the present invention, the left side of the baffle is provided with a first bearing mounting seat, the right side of the baffle is provided with a second bearing mounting seat, and the first bearing mounting seat is suitable for fixing the The right bearing of the motor shaft of the first motor, the second bearing mounting seat is suitable for fixing the left bearing of the motor shaft of the second motor.

According to an embodiment of the present invention, the housing of the first speed reducer, the double motor housing and the housing of the second speed reducer are integrally formed.

According to an embodiment of the present invention, the dual driving force system further includes: an electronic control assembly, the electronic control assembly is disposed between the first speed reducer and the second speed reducer and is connected with the motor assembly electrical connection.

According to an embodiment of the present invention, the electric control assembly and the double motor housing are arranged in a front-rear direction.

According to an embodiment of the present invention, the first speed reducer and the second speed reducer are spaced apart in the left-right direction and the first speed reducer and the second speed reducer are respectively connected with the first speed reducer of the motor assembly. A motor is connected to the second motor, and the motor assembly, the first speed reducer and the second speed reducer define an accommodating space for accommodating the electronic control assembly.

According to an embodiment of the present invention, the housing of the electric control assembly is provided with a first terminal, the double motor housing is provided with a second terminal opposite to the first terminal, the The first terminal and the second terminal are plug-fitted.

According to an embodiment of the present invention, the dual driving force system further includes: a cooling device adapted to cool at least one of the motor assembly, the speed reducer assembly and the electronic control assembly.

According to an embodiment of the present invention, the cooling device includes: a water-cooled cooling device and an oil-cooled cooling device, the water-cooled cooling device is adapted to cool the electric control assembly and the motor assembly, and the oil-cooled cooling device is suitable for cooling the electric control assembly and the motor assembly. A cooling device is adapted to cool the reducer assembly.

According to an embodiment of the present invention, the water-cooled cooling device comprises: a water pump and a cooling water channel provided in the double motor casing, the water pump is connected with the cooling water channel to pump the cooling water into the cooling water channel ; wherein the double motor housing is constructed as a double-layer structure to form the cooling water channel.

According to one embodiment of the present invention, the double-layer structure comprises: an outer shell part and an inner lining part spaced apart, a raised part is provided on the inner side wall of the outer shell part and/or the outer side wall of the inner lining part, The outer shell portion, the inner lining portion, and the raised portion define the cooling water passage.

According to an embodiment of the present invention, the cooling device includes: a water-cooled cooling device and an oil-cooled cooling device, the water-cooled cooling device is suitable for cooling the electronic control assembly, and the oil-cooled cooling device is suitable for cooling all The speed reducer assembly and the motor assembly are cooled.

According to an embodiment of the present invention, any number of the dual motor housing, the housing of the first reducer, the housing of the second reducer, and the housing of the electronic control assembly One piece.

According to an embodiment of the present invention, the first speed reducer and the second speed reducer are both multi-stage speed reducers.

The vehicle according to the present invention is briefly described below.

The vehicle according to the present invention is provided with the dual driving force system of the above-mentioned embodiment. Since the dual driving force system of the above-mentioned embodiment is provided on the vehicle according to the present invention, the space of the power transmission system in the vehicle is small, and the structure of the vehicle is small. The layout is more reasonable and compact, with high reliability and good stability.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a dual driving force system according to an embodiment of the present invention;

FIG. 2 is a top view of a dual driving force system according to an embodiment of the present invention;

Fig. 3 is the sectional view of A-A section in Fig. 2;

4 is a schematic diagram of a vehicle according to an embodiment of the present invention.

Reference number:

vehicle 1000,

Dual drive system 1,

Motor assembly 11,

Double motor casing 110, outer casing 1101, baffle plate 1102, first bearing mounting seat 1103, second bearing mounting seat 1104,

The first motor 111, the first motor stator 1111, the first motor rotor 1112, the first motor shaft 1113, the first motor bearing 1114,

The second motor 112, the second motor stator 1121, the second motor rotor 1122, the second motor shaft 1123, the second motor bearing 1124,

Reducer assembly 12, first reducer 121, second reducer 122,

Electronic control assembly 13 , cooling device 14 , water inlet 141 , water outlet 142 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

A dual driving force system according to an embodiment of the present invention will be described below with reference to FIGS. 1-3 .

As shown in 1 , FIG. 2 and FIG. 3 , the dual driving force system 1 according to the present invention includes a motor assembly 11 and a reducer assembly 12 , and the motor assembly 11 includes a first motor 111 on the left and a first motor 111 on the right The second motor 112, the motor housing of the first motor 111 and the motor housing of the second motor 112 are constructed as a double motor housing 110, the reducer assembly 12 includes a first reducer 121 and a second reducer 122, the first reducer 121 and the second reducer 122. The speed reducer 121 is located on the left side of the first motor 111 and is connected to the first motor 111 , and the second speed reducer 122 is located on the right side of the second motor 112 and connected to the second motor 112 .

According to the dual driving force system 1 of the present invention, the first motor 111 is adapted to be connected to the first speed reducer 121, the second motor 112 is adapted to be connected to the second speed reducer 122, and the first motor 111 and the second motor 112 convert electrical energy After the kinetic energy is generated, it is input to the left and right wheels of the vehicle through the first reducer 121 and the second reducer 122 to reduce the speed and increase the torque respectively. The arrangement and installation of the first motor 111 and the second motor 112 reduce the number of parts in the motor assembly 11 for connecting the first motor 111 and the second motor 112 .

Compared with the solution in which the first motor housing and the second motor housing are arranged separately, the dual motor housing 110 of the present invention can utilize the space more fully and reduce the The space occupied by the motor assembly 11, the double motor housing 110 can be used to accommodate the first motor stator 1111 and the first motor rotor 1112 of the first motor 111, the second motor stator 1121 and the second motor rotor of the second motor 112 1122, the double motor housing 110 can be used as the housing of the first motor 111 and the second motor 112 at the same time, which makes the arrangement of the first motor 111 and the second motor 112 more compact, and also reduces the number of the first motor 111 and the second motor. 112 connecting pieces make the arrangement of the dual driving force system 1 more reasonable.

According to the dual driving force system 1 of the present invention, both the first motor 111 and the second motor 112 are arranged in the dual motor housing 110, but the first motor 111 and the second motor 112 work independently, and the first motor 111 There is no connection between the output shaft of the second motor 112 and the output shaft of the second motor 112, that is to say, the first motor 111 and the second motor 112 can work independently, and the dual driving force system 1 does not require the setting of a differential. , by controlling the rotation speed of the first motor 111 and the second motor 112, the wheels on the left and right sides of the vehicle can turn smoothly. There is no differential in the dual driving force system 1, and the structure is optimized, so that the dual driving force system 1 is more concise.

According to the dual driving force system 1 of the present invention, by configuring the motor housing of the first motor 111 and the motor housing of the second motor 112 as a dual motor housing 110, the arrangement of the first motor 111 and the second motor 112 is more convenient It is compact, improves the space utilization rate of the dual driving force system 1, simplifies the arrangement and connection between the first motor 111 and the second motor 112 in the dual driving force system 1, ensures the stability and reliability of the dual driving force system 1, and enhances the Suitability of the dual drive system 1.

According to one embodiment of the present invention, the dual motor housing 110 includes an outer casing 1101 and a baffle 1102, wherein the outer casing 1101 defines a motor installation space, and the baffle 1102 is disposed in the outer casing 1101 to separate the motor installation space into the first The motor installation space and the second motor installation space, the first motor stator 1111 and the first motor rotor 1112 are arranged in the first motor installation space, the first motor stator 1111 is arranged on the outer periphery of the first installation space, and the first motor rotor 1112 is along the Arranged in the axial direction of the first installation space and extending to the left, the first motor rotor 1112 is connected with the first motor shaft 1113, and the left end of the first motor shaft 1113 can be connected with the first reducer 121; the second motor stator 1121 and The second motor rotor 1122 is arranged in the second motor installation space, the second motor stator 1121 is arranged on the outer periphery of the second installation space, the second motor rotor 1122 is arranged in the axial direction of the second installation space and extends to the right side, the first The second motor rotor 1122 is connected to the second motor shaft 1123 , and the right end of the second motor shaft 1123 can be connected to the second reducer 122 .

By arranging a motor installation space in the outer casing 1101, the double motor casing 110 can be provided with the first motor 111 and the second motor 112 at the same time, and the first motor 111 and the second motor 112 are arranged coaxially, which simplifies the The arrangement of the second motor 112 improves the space utilization rate of the dual driving force system 1 and ensures reliable installation of the first motor 111 and the second motor 112 .

According to an embodiment of the present invention, the left side of the baffle 1102 is provided with a first bearing mounting seat 1103, the right side of the baffle 1102 is provided with a second bearing mounting seat 1104, and the first bearing mounting seat 1103 is suitable for fixing the first motor The right bearing of the motor shaft of 111 , the second bearing mounting seat 1104 is suitable for fixing the left bearing of the second motor shaft 1123 .

The baffle 1102 is suitable for separating the motor installation space. The left and right sides of the baffle 1102 are respectively provided with a first bearing mounting seat 1103 and a second bearing mounting seat 1104, and the first bearing mounting seat 1103 and the second bearing mounting seat 1104 It is used to install the bearing; wherein, the first motor shaft 1113 is fixed with the first motor rotor 1112, and the right end of the first motor shaft 1113 is fixed on the first bearing mounting seat 1103 through the first motor bearing 1114, so as to be fixed on the baffle plate 1102 The second motor shaft 1123 is fixed with the second motor rotor 1122, and the left end of the second motor shaft 1123 is fixed on the second bearing mounting seat 1104 through the second motor bearing 1124 to be fixed on the baffle 1102.

The baffle plate 1102 is suitable for separating the motor installation space, and the baffle plate 1102 can also be used to install bearings to ensure the reliability of the installation of the rotors and motor shafts in the first motor 111 and the second motor 112 .

According to an embodiment of the present invention, the casing of the first reducer 121, the double motor casing 110 and the casing of the second reducer 122 are integrally formed, and the casings of the first reducer 121 and the second reducer 122 are formed with The integral molding of the dual motor housing 110 can improve the integration of the dual driving force system 1, so that the connection between the first reducer 121 and the first motor 111 and between the second reducer 122 and the second motor 112 is more reliable and stable. And no separate fasteners are required for fastening, thereby reducing the space occupied by the dual driving force system 1 and the number of components.

According to another embodiment of the present invention, the speed reducer includes a first speed reducer 121 and a second speed reducer 122, the housing of the first speed reducer 121 is the first speed reducer housing, and the housing of the second speed reducer 122 is the first speed reducer housing Two reducer casings, wherein the first reducer casing and the second reducer casing are respectively arranged on both sides of the double motor casing 110 , and the first reducer casing and the second reducer casing are connected to the double motor casings. The case 110 may be fixed by bolting. The casing of each part of the casing in the dual driving force system is designed in a split type and connected by fasteners, which reduces the manufacturing difficulty of the casing and saves the cost.

According to an embodiment of the present invention, the dual driving force system 1 further includes an electronic control assembly 13 disposed between the first speed reducer 121 and the second speed reducer 122 and electrically connected to the motor assembly 11 .

As shown in FIG. 1 and FIG. 2 , in a specific embodiment of the present invention, the electronic control assembly 13 may be fixedly connected with the first reducer 121 and the second reducer 122 by fasteners, respectively, because the first reducer 121 and the second reducer 122 in the length direction are larger than the motor assembly 11 in the length direction, there is still a part of the space between the first reducer 121 and the second reducer 122, the electric control assembly 13 Disposing the space between the first reducer 121 and the second reducer 122 can make full use of the space and improve the space utilization; The reducer assembly 12 can be made to protect the electronic control assembly 13, improve the reliability of the electronic control system, and prevent the electronic control assembly 13 from being damaged by external forces.

According to an embodiment of the present invention, the electronic control assembly 13 and the double motor housing 110 are arranged in the rearward direction, so that the electronic control assembly 13 can make full use of the space of the dual motor housing 110 in the front-rear direction, optimizing the Arrangement of the dual drive system 1 .

According to an embodiment of the present invention, the first speed reducer 121 and the second speed reducer 122 are spaced apart in the left-right direction and the first speed reducer 121 and the second speed reducer 122 are respectively connected with the first motor 111 and the second speed reducer of the motor assembly 11 . The second motor 112 is connected. The motor assembly 11, the first reducer 121 and the second reducer 122 define an accommodation space for accommodating the electronic control assembly 13. The first reducer 121 and the second reducer 122 are arranged in the width direction at On both sides of the motor assembly 11, in the length direction, the size of the first reducer 121 and the second reducer 122 is larger than the size of the motor assembly 11, the motor assembly 11, the first reducer 121 and the second reducer 122. A "concave" type accommodating space is formed between them, and the accommodating space can be used to accommodate the electronic control assembly 13, which makes the structure of the dual driving force system more compact and improves the space utilization rate

According to an embodiment of the present invention, the housing of the electric control assembly 13 is provided with a first terminal, the double motor housing 110 is provided with a second terminal opposite to the first terminal, the first terminal and the second terminal The two terminals are inserted and matched, the first terminal of the electric control assembly 13 can be disposed on the side facing the motor assembly 11 , and the second terminal on the double motor housing 110 is disposed on a side facing the electric control assembly 13 . On the other hand, after the first terminal and the second terminal are plugged and matched, the three-phase wire of the electronic control assembly 13 is connected to the three-phase wire of the motor assembly 11 , so that the electronic control assembly 13 controls the motor assembly 11 to work.

Wherein, the first terminal can be configured as a plug or a slot, the second terminal can be configured as a slot or a plug matched with the first terminal, and the electrical control assembly 13 and the motor assembly 11 pass through the first terminal It is inserted and matched with the second terminal, so that the connection between the electric control assembly 13 and the motor assembly 11 is convenient, and the electrical connection between the electric motor assembly 11 and the electric control assembly 13 does not require the arrangement of three wires that are too long. On the one hand, materials are saved and the weight of the dual driving force system 1 is reduced; on the other hand, the disassembly between the electronic control assembly 13 and the motor The reliability of the wheel-side dual-drive system is improved.

According to an embodiment of the present invention, the dual driving force system 1 further includes a cooling device 14, and the cooling device 14 is adapted to cool at least one of the motor assembly 11, the speed reducer assembly 12 and the electronic control assembly 13, and the cooling device 14 can be used for cooling down the motor assembly 11 , the electronic control assembly 13 and the reducer assembly 12 to ensure the reliability of the dual driving force system 1 .

According to a specific embodiment of the present invention, the cooling device 14 includes a water-cooled cooling device and an oil-cooled cooling device, the water-cooled cooling device is suitable for cooling the electric control assembly 13 and the motor assembly 11, and the oil-cooled cooling device is suitable for cooling the reducer Assembly 12 is cooled.

The water cooling device includes a water pump and a cooling water channel arranged in the double motor housing 110. The water pump is connected to the cooling water channel to pump the cooling water into the cooling water channel. The dual motor housing 110 is constructed as a double-layer structure to form the cooling water channel.

Specifically, the double motor casing 110 of the motor assembly 11 is a double-layered structure, and the double-layered structure may include an outer casing and an inner casing, the inner casing is arranged inside the outer casing, and a cooling water channel is formed between the inner casing and the outer casing to cool the The water can flow in the cooling water channel, and the flow of the cooling water in the cooling water channel is suitable for exporting the heat of the inner casing to the double motor casing 110, so as to cool the motor assembly 11 and ensure the reliability of the motor assembly 11; electronic control The assembly 13 is also provided with a cooling water channel, and the cooling water flows through the cooling water channel in the electric control assembly 13 to be suitable for cooling the electric control assembly 13 to ensure the reliability of the electric control assembly 13. The oil cooling device is suitable for cooling. The purpose of cooling the reducer assembly 12 is to reduce the temperature of the reducer assembly 12 and ensure stable and reliable operation of the reducer assembly 12 .

According to an embodiment of the present invention, the cooling water channel of the electric control assembly 13 and the cooling water channel of the motor assembly 11 can be connected, and the water pump is adapted to provide power for the cooling water, so that the cooling water can flow between the motor assembly 11 and the electric control assembly. 13 flows in the cooling water channel. By connecting the electronic control assembly 13 with the cooling water channel of the motor assembly 11, the arrangement of the cooling water channel is simplified and the cooling efficiency is improved.

According to an embodiment of the present invention, the double-layer structure includes a spaced outer shell portion and an inner lining portion, a convex portion is provided on an inner side wall of the outer shell portion and/or an outer side wall of the inner lining portion, and the outer shell portion, the inner lining portion and the convex portion are provided. The rise defines a cooling water channel.

Wherein, the outer shell part and the inner lining part are arranged at intervals, the convex part can be arranged on the outer side wall of the outer shell part and/or the inner side wall of the inner lining part, and a cooling water channel for the cooling liquid to flow is formed between the outer shell part and the inner lining part , the arrangement of the raised portion can increase the contact area of the cooling liquid with the outer shell and/or the inner lining, increase the flow resistance of the cooling liquid, and increase the contact time of the cooling liquid with the outer shell and the inner lining, thereby improving the dual driving force system. cooling effect.

According to an embodiment of the present invention, the protrusions may be respectively connected with the outer shell part and the inner lining part to be configured as a water channel rib, and the water channel rib, the outer shell part and the inner lining part together form the cooling water channel.

According to another embodiment of the present invention, the cooling device 14 includes a water-cooling cooling device and an oil-cooling cooling device, the water-cooling cooling device is suitable for cooling the electric control assembly 13, and the oil-cooling cooling device is suitable for cooling the reducer assembly 12 and the motor The assembly 11 is cooled, the motor assembly 11 and the reducer assembly 12 can be cooled by lubricating oil, the coolant passages between the reducer assembly 12 and the motor assembly 11 can be communicated with each other, and the oil cooling device can cool the motor. The stator and winding are cooled inside, and the cooling speed of the oil cooling device is fast, and the coolant can be recycled after only one filling.

According to the dual driving force system 1 of the present invention, any one of the dual motor housing 110 , the housing of the first speed reducer 121 , the housing of the second speed reducer 122 , the housing of the electronic control assembly 13 and the housing of the water pump A plurality of them are integrally formed, so as to improve the integration degree of the dual driving force system 1 and improve the space utilization rate.

Specifically, the dual driving force system 1 has the following solutions:

1. The housing of the first motor 111 , the housing of the second motor 112 and the housing of the electronic control assembly 13 may be integrally formed.

2. The casing of the first motor 111 , the casing of the second motor 112 , the casing of the first reducer 121 and the casing of the second reducer 122 may be integrally formed.

3. The casing of the first motor 111, the casing of the second motor 112, the casing of the first reducer 121, the casing of the second reducer 122 and the water pump casing can be integrally formed; wherein, the water pump can be integrated On the reducer assembly 12, the reducer assembly 12 powers the water pump.

Fourth, the casing of the first motor 111 , the casing of the second motor 112 , the casing of the first reducer 121 , the casing of the second reducer 122 and the electronic control assembly 13 may be integrally formed.

5. The casing of the first motor 111 , the casing of the second motor 112 , the casing of the first reducer 121 , the casing of the second reducer 122 , the water pump casing and the electric control assembly 13 can be integrally formed.

According to an embodiment of the present invention, the first motor and the second motor in the dual driving force system 1 may be configured as low-power motors to cool the dual driving force system 1 by natural cooling or air cooling.

In the above embodiment, both the first reducer 121 and the second reducer 122 may be configured as multi-stage speed reducers, specifically three-stage speed reducers, and the first motor 111 and the second motor 112 are configured as multi-stage speed reducers It can meet the requirements of the high-speed motor, and improve the practicability and reliability of the dual driving force system 1 .

The vehicle 1000 according to the present invention is briefly described below.

As shown in FIG. 4 , the vehicle 1000 according to the present invention is provided with the dual driving force system 1 of the above embodiment. Since the vehicle 1000 according to the present invention is provided with the dual driving force system 1 of the above embodiment, the vehicle 1000 has The power transmission system occupies less space, the structure arrangement of the vehicle 1000 is more reasonable and compact, the reliability is high, and the stability is good.

A specific embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the dual driving force system 1 of this embodiment includes a motor assembly 11 , a reducer assembly 12 and an electronic control assembly 13 , and the motor assembly 11 includes a dual motor housing 110 , The double motor housing 110 is configured as a cylindrical housing structure, and a baffle plate 1102 is provided at the inner middle position of the double motor housing 110 . In the space, both the rotor and the stator of the second motor 112 are arranged in the second motor installation space of the double motor casing 110, a baffle 1102 is arranged in the middle of the double motor casing 110, and a first bearing is arranged on the baffle 1102 The mounting seat 1103 and the second bearing mounting seat 1104, the right end bearing of the first motor shaft 1113 is set on the first bearing mounting seat 1103, the left end bearing of the second motor shaft 1123 is set on the second bearing mounting seat 1104, the first motor The left end of the shaft 1113 is connected to the first speed reducer 121, and the right end of the second motor shaft 1123 is connected to the second speed reducer 122; the electronic control assembly 13 is arranged between the first speed reducer 121 and the second speed reducer 122, and is electrically controlled The left side of the assembly 13 is connected to the first reducer 121 by fasteners, the right side of the electronic control assembly 13 is fixedly connected to the second reducer 122 by fasteners, and the electronic control assembly 13 is connected to the motor The assemblies 11 are arranged horizontally and can be directly plugged in to electrically connect the electric control assembly 13 with the motor assembly 11. The motor assembly 11 and the electric control assembly 13 are connected through an internal copper plate. The part connected to the control assembly 13 is sealed to facilitate the installation and maintenance of the dual drive system 1. The electric control assembly 13 is also provided with a water inlet 141 and a water outlet 142 of the cooling device 14, and the cooling liquid can pass through the water inlet 141. After entering the cooling device, heat can be taken out of the dual drive system 1 through the water outlet 142 , thereby realizing the cooling of the wheel side dual drive system 1 .

The dual driving force system 1 according to the present invention is very compactly arranged, and the motor assembly 11, the electronic control assembly 13 and the reducer assembly 12 are attached together, reducing the volume of the dual driving force system 1. The first reducer 121 and the second reducer 122 are located on both sides of the motor assembly 11, very close to the wheels, reducing the length of the transmission shaft and the loss of power during transmission.

Since the dual drive system 1 adopts wheel-side drive, there is no transmission shaft connected between the first reducer 121 and the second reducer 122 , so there is no differential structure, and the differential function is determined by the rotational speed in the electronic control assembly 13 . The loop is realized, and the differential function is realized through the torque distribution and speed adjustment of the first motor 111 and the second motor 112, so as to ensure the smoothness of the vehicle turning.

Since the dual driving force system 1 adopts the design of an integrated motor housing, the first motor 111 and the second motor 112 are located on both sides of the dual motor housing 110 . There is no need to use bolts to connect the two motor casings together, unnecessary bolt connections are reduced, and the overall axial arrangement size and casing weight are also reduced.

Due to the compact arrangement of the dual driving force system 1, the motor assembly 11 and the electronic control assembly 13 are very close, and both are fixed on the reducer housing, so the external connection of the three-phase line is not adopted. The outlet of the three-phase line of the motor adopts a plug-type design, and the two positions are horizontal, which can be directly pulled and inserted during installation. The structure not only reduces the length and consumption of the three-phase line, but also facilitates installation and later dismantling and maintenance.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples," or the like, is meant to incorporate the embodiment. A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, The scope of the invention is defined by the claims and their equivalents.

Claims (16)

1. A dual drive system, comprising:

a motor assembly, the motor assembly comprising: the motor comprises a first motor and a second motor, wherein the first motor is positioned on the left side, the second motor is positioned on the right side, and a motor shell of the first motor and a motor shell of the second motor are constructed into double motor shells;

a speed reducer assembly, the speed reducer assembly comprising: the first speed reducer is located on the left side of the first motor and connected with the first motor, and the second speed reducer is located on the right side of the second motor and connected with the second motor.

2. A dual drive system according to claim 1, wherein said dual motor casing comprises:

an outer case defining a motor mounting space;

a baffle plate disposed within the outer housing to divide the motor installation space into a first motor installation space and a second motor installation space; wherein

The rotor and the stator of the first motor are arranged in the first motor mounting space, and the rotor and the stator of the second motor are arranged in the second mounting space.

3. The dual drive system according to claim 2, wherein a first bearing mount is provided on a left side of said baffle, and a second bearing mount is provided on a right side of said baffle, said first bearing mount being adapted to fix a right bearing of a motor shaft of said first motor, said second bearing mount being adapted to fix a left bearing of a motor shaft of said second motor.

4. A dual drive system according to claim 1, wherein a case of said first decelerator, said dual motor case, and a case of said second decelerator are integrally formed.

5. A dual drive system according to claim 1, further comprising: and the electric control assembly is arranged between the first speed reducer and the second speed reducer and is electrically connected with the motor assembly.

6. A dual drive system according to claim 5, wherein said electrical control assembly and said dual motor housing are arranged in a front-to-rear direction.

7. A dual drive system according to claim 6, wherein said first speed reducer and said second speed reducer are spaced apart in the left-right direction and are connected to a first motor and a second motor of said motor assembly, respectively, and said motor assembly, said first speed reducer and said second speed reducer define a housing space for housing said electronic control assembly.

8. The dual-drive system according to claim 5, wherein a first terminal is disposed on a housing of said electronic control assembly, a second terminal is disposed on said dual-motor housing opposite to said first terminal, and said first terminal and said second terminal are mated by plugging.

9. A dual drive system according to claim 5, further comprising: a cooling device adapted to cool at least one of the motor assembly, the reducer assembly and the electronic control assembly.

10. A dual drive system according to claim 9, wherein said cooling means comprises: water-cooling device and the cold cooling device of oil, water-cooling device is suitable for right automatically controlled assembly with the motor assembly cools off, the cold cooling device of oil is suitable for right the reduction gear assembly cools off.

11. A dual drive system according to claim 10, wherein said water-cooled cooling means includes: the water pump is connected with the cooling water channel so as to pump cooling water into the cooling water channel; wherein

The dual motor case is constructed in a double-layered structure to form a cooling water passage.

12. A dual drive system according to claim 11, wherein said dual layer structure comprises: the cooling water channel comprises an outer shell part and an inner lining part which are spaced apart, wherein a bulge is arranged on the inner side wall of the outer shell part and/or the outer side wall of the inner lining part, and the outer shell part, the inner lining part and the bulge define the cooling water channel.

13. A dual drive system according to claim 9, wherein said cooling means comprises: water-cooling device and the cold cooling device of oil, water-cooling device is suitable for right automatically controlled assembly cools off, the cold cooling device of oil is suitable for right the reduction gear assembly with motor assembly cools off.

14. The dual drive system according to claim 5, wherein any plurality of the dual motor housing, the housing of the first reduction gear, the housing of the second reduction gear, and the housing of the electronic control assembly are integrally formed.

15. A dual drive system according to claim 1, wherein both said first retarder and said second retarder are multi-stage retarders.

16. A vehicle comprising a dual drive system according to any one of claims 1 to 15.

Images