Compact hybrid power box and hybrid power system

Abstract

The utility model relates to a compact type hybrid power box which comprises a motor and an oil pump, the motor comprises a shell, the oil pump is integrated on the shell and is driven by a motor rotor, and the oil pump is directly integrated on the shell of the motor, so that the space for independently arranging the oil pump is saved, and the overall volume of the hybrid power box is reduced; therefore, the layout of the whole hybrid power system in the vehicle is more flexible, and the required material and manufacturing cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of automobiles, and in particular to a compact hybrid gearbox and hybrid system. Background Technology

[0002] The market demand for pickup trucks is showing strong growth, especially in rural and suburban markets. As a multi-functional vehicle, pickup trucks have gradually won the favor of many consumers due to their high load-bearing capacity and good off-road performance. With the rapid development of electric vehicles in my country, pickup trucks have also begun to be equipped with hybrid systems to meet the goals of strong power and cost-effective electricity use.

[0003] Pickup trucks typically employ a body-on-frame construction, where the chassis and body are two independent systems. The chassis, serving as the base for the entire vehicle assembly, supports the powertrain and running gear, while the body primarily provides collision protection and energy absorption. This independent layout between the chassis and body, and the fact that the chassis must withstand forces from all directions, results in relatively limited engine compartment space, thus restricting the size of the engine window. Furthermore, the hybrid powertrain, a core component of the hybrid system, suffers from several drawbacks. Existing models feature large axial dimensions for the electric motor, and the internal and external rotors of the oil pump are separately mounted, requiring additional connectors and installation space. This not only increases manufacturing costs but also makes the hybrid powertrain relatively bulky, further increasing the size and complexity of the electric motor. This bulky hybrid powertrain leads to poor vehicle compatibility; it's difficult for the hybrid powertrain to integrate seamlessly with other parts of the vehicle, impacting overall performance and comfort.

[0004] Therefore, there is an urgent need for a compact hybrid gearbox, which has a compact overall size, reduces the space required in the hybrid system, and improves the adaptability of the whole vehicle. Utility Model Content

[0005] In view of this, the present invention provides a compact hybrid box, the overall hybrid box being compact in size, reducing the space required in the hybrid system and improving the adaptability of the whole vehicle; the second objective of the present invention is to provide a hybrid system including the above-mentioned compact hybrid box.

[0006] The compact hybrid gearbox provided by this utility model adopts the following technical solution:

[0007] A compact hybrid gearbox includes a motor and an oil pump, the motor including a housing, the oil pump being integrated into the housing and driven by the motor rotor.

[0008] Optionally, the housing has a mounting cavity and an oil passage, the oil pump is integrated into the mounting cavity, and the motor rotor is inserted into the mounting cavity to drive the oil pump, so that the oil pump delivers the oil from the oil pan to the motor through the oil passage.

[0009] Optionally, the mounting cavity forms a pump chamber, and the oil pump includes an inner rotor and an outer rotor, which are located within the pump chamber.

[0010] Optionally, the housing is provided with a sealing cover, which is used to seal the inner rotor and outer rotor of the oil pump within the pump cavity.

[0011] Optionally, the housing has an inward recess on the side away from the engine to form a recessed platform, the mounting cavity is located in the recessed platform, and the sealing cover is disposed on the recessed platform. The sealing cover is lower than the end face of the housing on the side away from the engine or is flush with the end face of the housing on the side away from the engine.

[0012] Optionally, it also includes a rotary transformer, which includes a resolver stator and a resolver rotor, wherein the resolver rotor is coaxially fixed to the motor rotor and the resolver stator is fixed to the housing.

[0013] Optionally, the housing is provided with a mounting base, the mounting base having a cavity for accommodating the resolver rotor and the resolver stator, the resolver stator being disposed on the mounting base.

[0014] Optionally, the mounting base has a through hole communicating with the seat cavity, and the mounting base is provided with a rotary cover plate for closing the through hole.

[0015] Optionally, it may also include an electronic control unit, which is integrated into the housing on the side away from the engine.

[0016] To achieve the second objective mentioned above, the present invention also provides a hybrid system comprising an engine for driving an electric motor and the aforementioned compact hybrid housing, wherein the motor rotor is directly connected to the engine crankshaft.

[0017] In summary, this utility model has at least one of the following beneficial technical effects: the inner rotor of the oil pump is set on the motor rotor, and the outer rotor of the oil pump is set on the housing. There is no need to provide additional connecting parts and installation space for the inner and outer rotors of the oil pump, which significantly reduces the overall volume of the hybrid box, making the layout of the entire hybrid system in the vehicle more flexible and helping to reduce the required materials and manufacturing costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Front housing; 2. Rear housing; 3. Motor stator; 4. Motor rotor; 5. Inner rotor of oil pump; 6. Outer rotor of oil pump; 7. Resolver stator; 8. Resolver rotor; 9. Electrical control unit; 10. Resolver cover plate; 11. Mounting base; 12. Sealing cover. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail below.

[0021] This utility model discloses a compact hybrid box and hybrid system.

[0022] Reference Figure 1 A compact hybrid gearbox includes an electric motor and an oil pump. The electric motor includes a housing, and the oil pump is integrated into the housing and driven by the electric motor rotor 4. Since the oil pump is directly integrated into the housing of the electric motor, the space required to set up the oil pump separately is eliminated, the overall volume of the hybrid gearbox is reduced, and the layout of the entire hybrid system in the vehicle is more flexible, which helps to reduce the required materials and manufacturing costs.

[0023] In this embodiment, the motor includes a motor stator 3 and a motor rotor 4 disposed inside the housing. The motor stator 3 is fixedly mounted on the housing to generate a magnetic field after being energized, and the motor rotor 4 rotates in the magnetic field generated by the motor stator 3.

[0024] In this embodiment, the motor is a P1 motor. Furthermore, the P1 motor adopts a concentrated winding manufacturing process. The concentrated winding manufacturing process helps to reduce the complexity and weight of the motor, and shortens the end length of the motor's output terminal, resulting in a smaller axial dimension and a more compact structure. In this embodiment, the end length of the motor's output terminal is 3-10mm.

[0025] In this embodiment, the outer casing includes a front housing 1 and a rear housing 2 disposed on the front housing 1. The rear housing 2 can be integrally formed on the front housing 1 or can be detachably disposed on the front housing 1. The motor stator 3 is fixedly mounted on the rear housing 2, and an oil seal structure is provided between the front housing 1 and the motor rotor 4 to improve the sealing effect.

[0026] The oil pump includes an outer rotor 6 and an inner rotor 5. The rear housing 2 has a mounting cavity, in which the inner rotor 5 and the outer rotor 6 are located. The inner rotor 5 is eccentrically rotated within the outer rotor 6. The inner rotor 5 is coaxially fixed to the motor rotor 4. This structural design eliminates the need for a separate oil pump mounting location. Integrating the inner rotor 5 and the outer rotor 6 into the motor significantly reduces the overall volume of the hybrid gearbox, making the layout of the entire hybrid system in the vehicle more flexible and helping to reduce the required materials and manufacturing costs.

[0027] In this embodiment, the motor employs oil cooling. An oil pump delivers oil to the motor's interior for lubrication and cooling, resulting in excellent heat dissipation and improved motor operational stability and lifespan. Specifically, the rear housing 2 integrates an oil passage connected to the oil pump. The oil pump circulates with the oil pan, forming an oil circulation loop. When the engine is running, the oil pump draws oil from the oil pan and pumps it through the oil passage to the P1 motor. The oil then returns to the oil pan via the cooling system. This process not only lubricates the internal motor components but also absorbs the heat generated during motor operation, effectively cooling the motor and helping to maintain its normal operating temperature, thus improving its efficiency and reliability.

[0028] A sealing cover for sealing the mounting cavity is provided on the bent part of the rear housing 2. The outer surface of the sealing cover is not higher than the outermost surface of the rear housing 2. The above structural design provides space for the installation and rotation of the inner rotor 5 and the outer rotor 6 of the oil pump. After the installation of the inner rotor 5 and the outer rotor 6 of the oil pump is completed, the overall space of the motor is reduced, the overall volume of the hybrid box is significantly reduced, and the layout of the entire hybrid system in the vehicle is more flexible. This helps to reduce the required materials and manufacturing costs. Furthermore, by making the sealing cover flush with or lower than the outer surface of the rear housing 2, the sealing cover is prevented from protruding outside the rear housing 2, thereby effectively reducing the axial dimension of the motor.

[0029] Specifically, the rear housing 2 has an inward recess on the side away from the engine to form a recessed platform, and the mounting cavity is located within the recessed platform. A sealing cover 12 is provided on the rear housing 2, and the sealing cover 12 is located on the recessed platform to seal the inner rotor 5 and the outer rotor 6 of the oil pump within the pump cavity. Furthermore, the sealing cover 12 is lower than or flush with the end face of the housing on the side away from the engine, so that the sealing cover 12 is located within the end face of the housing on the side away from the engine, which further effectively reduces the space occupied by the oil pump and makes the structure more compact.

[0030] In this embodiment, the compact hybrid box also includes a resolver, which includes a resolver stator 7 and a resolver rotor 8. The resolver rotor 8 is coaxially fixed to the motor rotor 4, and the resolver stator 7 is fixed to the rear housing 2. The resolver rotor 8 is driven to rotate by the motor rotor 4, which not only ensures that the resolver can accurately measure the rotation state of the motor, but also reduces additional transmission components and installation space, making the motor structure more compact and efficient.

[0031] The mounting base has a cavity for accommodating the resolver rotor and resolver stator. The resolver stator is mounted on the mounting base, which has a through hole communicating with the cavity. The through hole facilitates future maintenance of the resolver stator 7 and resolver rotor 8. The mounting base is equipped with a resolver cover plate 10 for sealing the through hole. The resolver cover plate 10 improves the sealing performance, separates the resolver rotor and resolver stator inside the mounting cavity from other components of the motor, and helps protect the resolver stator 7 and resolver rotor 8 inside the cavity from interference and damage from the external environment.

[0032] In this invention, both the internal rotor and the resolver rotor of the oil pump are mounted on the motor rotor, which helps to optimize the motor layout and installation space, reduces additional transmission components and installation space, makes the motor structure more compact and efficient, and also helps to improve the motor's heat dissipation performance and operating efficiency, further enhancing the overall performance of the motor.

[0033] In this embodiment, the compact hybrid box also includes an electronic control unit 9, which is responsible for controlling and regulating the operation of the motor. The electronic control unit 9 is integrated on the side of the rear housing 2 away from the engine, which not only reduces the number of connecting devices between the electronic control unit 9 and the motor and simplifies the connection structure, but also facilitates centralized cooling, so that the heat of the electronic control system can be dissipated more effectively.

[0034] This invention also provides a hybrid system comprising an engine for driving a motor and the aforementioned compact hybrid housing. The motor rotor 4 of the compact hybrid housing is directly connected to the engine crankshaft, making the entire hybrid system more compact. Compared to traditional hybrid systems (where the motor rotor 4 is connected to the engine crankshaft via transmission components), this reduces additional transmission components such as gears and connecting shafts, thereby saving space and resulting in a smaller and lighter hybrid housing. This direct connection method not only contributes to vehicle weight reduction but also improves space utilization and creates a more compact structure.

[0035] Furthermore, since the hybrid system adopts all the technical solutions of the aforementioned compact hybrid box, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A compact hybrid gearbox, characterized in that: It includes a motor and an oil pump, the motor including a housing, the oil pump being integrated into the housing and driven by the motor rotor.

2. The compact hybrid gearbox according to claim 1, characterized in that: The housing has an installation cavity and an oil passage. The oil pump is integrated into the installation cavity. The motor rotor passes through the installation cavity to drive the oil pump, so that the oil pump delivers the oil from the oil pan to the motor through the oil passage.

3. The compact hybrid gearbox according to claim 2, characterized in that: The mounting cavity forms a pump chamber, and the oil pump includes an inner rotor and an outer rotor, which are located within the pump chamber.

4. The compact hybrid gearbox according to claim 3, characterized in that: The housing is provided with a sealing cover, which is used to seal the inner rotor and outer rotor of the oil pump inside the pump cavity.

5. The compact hybrid gearbox according to claim 4, characterized in that: The housing has a recessed platform on the side away from the engine, the mounting cavity is located in the recessed platform, and the sealing cover is disposed on the recessed platform. The sealing cover is lower than the end face of the housing on the side away from the engine or is flush with the end face of the housing on the side away from the engine.

6. The compact hybrid gearbox according to claim 1, characterized in that: It also includes a rotary transformer, which comprises a resolver stator and a resolver rotor, wherein the resolver rotor is coaxially fixed to the motor rotor and the resolver stator is fixed to the housing.

7. The compact hybrid gearbox according to claim 6, characterized in that: The housing is provided with a mounting base, which has a cavity for accommodating the resolver rotor and the resolver stator, and the resolver stator is disposed on the mounting base.

8. The compact hybrid gearbox according to claim 7, characterized in that: The mounting base has a through hole communicating with the seat cavity, and the mounting base is provided with a rotary cover plate for sealing the through hole.

9. The compact hybrid gearbox according to claim 1, characterized in that: It also includes an electronic control unit, which is integrated into the housing on the side away from the engine.

10. A hybrid system, characterized in that: It includes an engine for driving an electric motor and a compact hybrid housing as described in any one of claims 1-9, wherein the motor rotor is directly connected to the engine crankshaft.

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