CN214689005U - Hybrid electric vehicle and hybrid driving device thereof - Google Patents

Abstract

A hybrid power driving device comprises a first main shaft connected with an engine; the first auxiliary shaft is connected with the first main shaft through a first transmission mechanism; the first motor is connected with the first auxiliary shaft; the second main shaft is connected with a second motor; the second auxiliary shaft and the second main shaft are arranged in parallel and connected through a second transmission mechanism; the second auxiliary shaft is arranged in parallel with the first main shaft and is connected with the first main shaft through a third transmission mechanism; the clutch is arranged on the first main shaft and enables the first main shaft to be in power coupling or disconnection with the third transmission mechanism; the second auxiliary shaft is connected with the differential through a fourth transmission mechanism; the first motor and the second motor are arranged in parallel; the dual-motor controller comprises a first motor control module and a second motor control module; according to the hybrid power driving device provided by the embodiment of the application, multiple driving modes can be realized, the engine works in a high-efficiency interval, and the design concept that motor driving is dominant and engine driving is auxiliary is realized.

Description

Hybrid electric vehicle and hybrid driving device thereof

Technical Field

The present disclosure relates to vehicle technologies, and particularly to a hybrid driving device and a hybrid vehicle having the same.

Background

With the continuous consumption of energy, the development and utilization of new energy vehicles have gradually become a trend. The hybrid vehicle is driven by an engine and/or a motor as one of new energy vehicles.

However, in the related art, the generator and the driving motor of the hybrid vehicle are coaxially arranged, which has a very high requirement on the volume of the motor, and limits the type selection of the motor.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present application is to provide a hybrid driving apparatus, which can realize multiple driving modes of hybrid power, and achieve the technical effects of low oil consumption, low cost and high endurance.

A second object of the present application is to provide a hybrid vehicle.

In order to achieve the above object, an embodiment of a first aspect of the present application provides a hybrid drive device, including an engine; the first main shaft is connected with the engine; the first auxiliary shaft is arranged in parallel with the first main shaft and is connected with the first main shaft through a first transmission mechanism; a first electric machine coupled to the first countershaft; a second motor; the second main shaft is connected with the second motor; the second auxiliary shaft is arranged in parallel with the second main shaft and is connected with the second main shaft through a second transmission mechanism; the second auxiliary shaft is arranged in parallel with the first main shaft and is connected with the first main shaft through a third transmission mechanism; the clutch is arranged on the first main shaft and enables the first main shaft to be in power coupling or disconnection with the third transmission mechanism; the second auxiliary shaft is connected with the differential through a fourth transmission mechanism; the first motor and the second motor are arranged in parallel; a dual motor controller comprising a first motor control module and a second motor control module.

According to the hybrid power drive device that this application embodiment provided, can realize multiple drive mode, make the engine work in high-efficient interval always, realize that motor drive is main, the engine drive is the design theory of assisting:

(1) in the EV mode, the second motor works, the engine and the first motor do not work, the clutch is disconnected, and the power output by the second motor is transmitted to wheels through the second main shaft, the second transmission mechanism, the second auxiliary shaft, the fourth transmission mechanism and the differential mechanism;

(2) HEV series mode: the second motor works, the engine and the first motor work, the clutch is disconnected, the engine drives the first motor to generate power, the first motor outputs energy to the second motor through the double-motor controller, and the second motor drives the wheels to run. The engine always works in a high-efficiency interval, when the output power of the engine is smaller than the required power of a wheel end, on one hand, the engine drives a first motor to generate power, the first motor outputs energy to a second motor through a double-motor controller, the second motor drives the wheel to run, on the other hand, a power battery performs power compensation, the energy is output to the second motor through the double-motor controller, and the second motor drives the wheel to run so as to meet the required power of the wheel end; when the output power of the engine is greater than the power required by the wheel end, on one hand, the engine drives the first motor to generate power, the first motor outputs energy to the second motor through the dual-motor controller, the second motor drives the wheels to run, and on the other hand, the first motor outputs residual energy to the power battery through the dual-motor controller to realize energy storage;

(3) HEV parallel mode: when the output power of the engine is greater than the power required by the wheel end, on one hand, the engine directly drives the wheels to run, on the other hand, the engine drives the second motor to generate electricity, and the dual-motor controller of the second motor outputs the residual energy to the power battery to realize energy storage; when the output power of the engine is smaller than the required power of the wheel end, on one hand, the engine directly drives the wheels to run, on the other hand, the power battery performs power compensation, energy is output to the second motor through the double-motor controller, and the second motor drives the wheels to run so as to meet the required power of the wheel end;

the first motor and the second motor are arranged in parallel, the size requirement on the motors is small, the motor model selection range is increased, the first motor control module and the second motor control module are integrated in the double-motor controller, the size of the electric control unit is reduced, and the cost is reduced.

In order to achieve the above object, an embodiment of a second aspect of the present application provides a hybrid vehicle including the hybrid driving apparatus.

According to the hybrid electric vehicle provided by the embodiment of the application, multiple driving modes can be realized, the engine always works in a high-efficiency interval, the design concept that motor driving is mainly adopted and engine driving is assisted is realized, and the technical effects of low oil consumption, low cost and high endurance are achieved.

Drawings

FIG. 1 is a schematic diagram of a hybrid drive unit according to an embodiment of the present application;

FIG. 2 is a gear schematic of a hybrid drive according to an embodiment of the present application;

fig. 3 is an exploded view of a hybrid drive apparatus according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a clutch according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a bearing retainer structure for a clutch according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

A hybrid driving apparatus according to an embodiment of an aspect of the present invention, which provides sufficient power and electric energy for normal running of a hybrid vehicle, will be described with reference to fig. 1 to 5.

Fig. 1 is a schematic diagram of a hybrid drive device according to an embodiment of the present application. As shown in fig. 1, the hybrid drive device includes: an engine 10, a first electric machine 20, and a second electric machine 30. In the embodiment of the present application, the engine 10 is an Atkinson cycle engine with engine thermal efficiency as high as 43%. The engine control system has the ultrahigh compression ratio of 15.5, increases the stroke-cylinder diameter ratio, is provided with an EGR waste gas recirculation system and a cylinder body and cylinder cover split type cooling system, adopts a series of friction reduction measures and optimizes the engine control system aiming at the high thermal efficiency target. The first motor 20 and the second motor 30 are flat wire motors and are high-power motors, and the slot filling rate of the motors is remarkably improved and the power density of the motors is increased by designing the rectangular sections of the stator windings.

As shown in fig. 1 and 2, the engine 10 is connected to the first main shaft 40 and outputs power to the first main shaft 40, the first main shaft 40 and the first sub-shaft 50 are arranged in parallel, the first main shaft 40 and the first sub-shaft 50 are connected by the first transmission mechanism 60, and the first motor 20 is connected to the first sub-shaft 50. In the embodiment of the present application, the first transmission mechanism 60 is a set of speed-increasing gear sets, and includes a first gear 61 and a second gear 62 that are meshed with each other, the first gear 61 is fixedly connected to the first main shaft 40, and the second gear 62 is fixedly connected to the first sub-shaft 50, so that the first motor 20 has a high power generation efficiency due to the speed increase of the gears.

The second motor 30 is connected to the second main shaft 70 and outputs power to the second main shaft 70 or receives power transmitted by the second main shaft 70, the second auxiliary shaft 80 is arranged in parallel with the second main shaft 70, the second auxiliary shaft 80 is connected to the second main shaft 70 through a second transmission mechanism 90, the second transmission mechanism 90 includes a third gear 91 and a fourth gear 92 which are meshed with each other, the third gear 91 is fixedly connected to the second main shaft 70, and the fourth gear 92 is fixedly connected to the second auxiliary shaft 80.

The second countershaft 80 is arranged in parallel with the first main shaft 40, the second countershaft 80 is connected with the first main shaft 40 through a third transmission mechanism 100, the third transmission mechanism 100 comprises a fifth gear 101 and a sixth gear 102 which are meshed with each other, the clutch 110 enables the first main shaft 40 to be in power coupling or disconnection with the third transmission mechanism 100, specifically the fifth gear 101 is connected with the clutch 110, the clutch 110 enables the first main shaft 40 to be in power coupling or disconnection with the fifth gear 101, and the sixth gear 102 is fixedly connected with the second countershaft 80.

In one embodiment of the present application, the fourth gear 92 and the sixth gear 102 are the same gear, i.e. the same gear is meshed with the third gear 91 and the fifth gear 101, respectively, which reduces the cost and volume of the driving device.

The hybrid drive device includes a differential 120, the second countershaft 80 is connected to the differential 120 through a fourth transmission mechanism 130, the fourth transmission mechanism 130 includes a seventh gear 131 and an eighth gear 132, the seventh gear 131 is fixedly connected to the second countershaft 80, the eighth gear 132 is fixedly connected to the differential 120, the seventh gear 131 is a main reduction drive gear, the eighth gear 132 is a main reduction driven gear, and the differential 120 transmits power to a wheel end through a half shaft.

In the embodiment of the present application, the first motor 20 and the second motor 30 are arranged in parallel, compared with the prior art in which the generator and the driving motor are coaxially arranged, the requirement on the size of the motor is smaller, and the range of the motor selection is increased, and in addition, the hybrid driving device includes a dual-motor controller 140, as shown in fig. 3, including a first motor control module 141 and a second motor control module 142, and the first motor control module 141 and the second motor control module 142 are integrated in the dual-motor controller 140, so that the size of the electric control unit is reduced, and the cost is reduced.

The first motor control module 141 includes a first inverter, and the second motor module 142 includes a second inverter, and two bus terminals of the first inverter are connected to two bus terminals of the second inverter in a one-to-one correspondence, so that the electric energy generated by the first motor 20 is directly input to the second motor 30 through the first inverter and the second inverter.

The hybrid power driving device of the application is formed by taking the elements as main technical characteristic elements, can realize multiple driving modes, enables the engine to work in a high-efficiency interval all the time, and realizes the design concept of mainly driving the motor and secondarily driving the engine.

(1) The EV mode, the second electric machine 30 is operated, the engine 10 and the first electric machine 20 are not operated, and the clutch 110 is disconnected. The power battery inputs electric energy to the second motor 30 through the dual-motor controller 140, and the power output from the second motor 30 is transmitted to the wheels through the half shafts through the second main shaft 70, the third gear 91, the fourth gear 92, the second sub-shaft 80, the seventh gear 131, the eighth gear 132, and the differential 120.

(2) HEV series mode: the second motor 30 works, the engine 10 and the first motor 20 work, the clutch 110 is disconnected, the engine 10 drives the first main shaft 40 to rotate, then the first main shaft, the second gear and the first auxiliary shaft 50 drive the first motor to generate power, the first motor 20 outputs energy to the second motor 30 through the dual-motor controller 140, and the power output by the second motor 30 is transmitted to wheels through the second main shaft 70, the third gear 91, the fourth gear 92, the second auxiliary shaft 80, the seventh gear 131, the eighth gear 132 and the differential 120 and through half shafts. In order to achieve the technical effect of low oil consumption, the engine 10 always works in a high-efficiency interval, when the output power of the engine 10 is smaller than the required power of a wheel end, on one hand, the engine 10 drives the first motor 20 to generate electricity, the first motor 20 outputs energy to the second motor 30 through the dual-motor controller 140, the second motor 30 drives wheels to run, on the other hand, the power battery performs power compensation, the energy is output to the second motor 30 through the dual-motor controller 140, and the second motor 30 drives the wheels to run so as to meet the required power of the wheel end; when the output power of the engine 10 is greater than the power required by the wheel end, on one hand, the engine 10 drives the first motor 20 to generate power, the first motor 20 outputs energy to the second motor 30 through the dual-motor controller 140, the second motor 30 drives the wheels to run, and on the other hand, the first motor 20 outputs residual energy to the power battery through the dual-motor controller 140, so that energy storage is realized.

(3) HEV parallel mode: the second motor 30 and the engine 10 work, the first motor 20 does not work, the clutch 110 is engaged, in order to achieve the technical effect of low oil consumption, the engine 10 always works in a high-efficiency interval, when the output power of the engine 10 is greater than the power required by a wheel end, on one hand, the engine 10 drives the first main shaft 40 to rotate, and directly drives wheels to run through the clutch 110, the fifth gear 101, the sixth gear 102, the second auxiliary shaft 80, the seventh gear 131, the eighth gear 132 and the differential 120, on the other hand, the engine 10 drives the second motor 30 to generate electricity through the first main shaft 40, the clutch 110, the fifth gear 101, the sixth gear 102 (the fourth gear 92), the third gear 91 and the second main shaft 70, and the second motor 30 outputs residual energy to a power battery through the dual-motor controller 140 to achieve energy storage; when the output power of the engine 10 is smaller than the power required by the wheel end, on one hand, the engine 10 directly drives the wheels to run, on the other hand, the power battery performs power compensation, the energy is output to the second motor 30 through the dual-motor controller 140, and the second motor 30 drives the wheels to run to meet the power required by the wheel end.

In the HEV parallel mode, a power generation path in which the engine 10 drives the second motor 30 to generate power is adopted, and the rated power of the second motor 30 is larger than that of the first motor 20, so that the power generation power of the second motor 30 is larger than that of the first motor 20, and in the HEV parallel mode, the power battery needs to be quickly supplemented with power, so in the embodiment of the application, the engine 10 is adopted to drive the second motor 30 to generate power, and the effect of quickly supplementing power can be achieved.

According to the embodiment of the application, the engine 10 can selectively output power to the wheel end, and the engine, the first motor and the second motor are controlled by means of the buffer effect of the power battery, so that the engine can always work in a high-efficiency area when in a working state by performing charge and discharge control on the power battery. The driving device firstly realizes the power form of mainly using electricity and using fuel oil as an auxiliary power, and has the advantages of long endurance in EV mode, longer motor driving time and shorter engine driving time due to the large-capacity power battery, so that the comprehensive oil consumption is lower; meanwhile, the driving device comprises an HEV parallel mode and an HEV series mode, and the engine 10 can work in the most economic mode under various modes by utilizing the buffering effect of a power battery, so that the economy of the hybrid electric vehicle is effectively improved, the use expectation of a user is met, the power-loss oil consumption of the system can reach 3.8L/100km, and the hundred-kilometer acceleration can reach 7.3 seconds, so that the purposes of quickness, economization, statics and smoothness are realized, namely, the system has super-strong power, and the quickness is one step; the oil consumption is ultra-low, and the cost is saved; silence to give notice of noise; electric control, super smooth.

As shown in fig. 4, the clutch 110 is used as a connection disconnection unit, and during operation, on one hand, a hydraulic system needs to input hydraulic oil into an internal cavity of the clutch 110 to drive the clutch 110 to be connected or disconnected; on the other hand, the clutch 110 generates a large amount of heat, and the hydraulic system needs to input hydraulic oil to the clutch 110 to cool the clutch 110. In the embodiment of the present application, the hybrid driving apparatus includes a first pump connected to the first main shaft 40, the engine 10 outputs power to the first pump 200 through the first main shaft 40, a first pipeline 41 and a second pipeline 42 are disposed in the first main shaft 40, the engine 10 drives the first pump to pump oil, and outputs hydraulic oil to the clutch 110 through the first pipeline 41 to drive the clutch 110 to operate, or outputs hydraulic oil to the clutch 110 through the second pipeline 42 to cool the clutch 110.

The first motor 20 and the second motor 30 are used as power elements, and in the working process, a large amount of heat is generated, and hydraulic oil needs to be input into the first motor 20 and the second motor 30 to realize cooling and heat dissipation. In the embodiment of the present application, the hybrid driving apparatus includes a second pump, the second pump is connected to the second main shaft 70, the second motor 30 outputs power to the second pump through the second main shaft 70 and pumps oil, and hydraulic oil is input to the first motor 20 and the second motor 30 to perform cooling and heat dissipation. In another embodiment of the present application, the second motor 30 outputs power to the second pump through the second main shaft 70 and pumps oil, outputting hydraulic oil to the clutch 110 through the second line 42, thereby cooling the clutch 110.

As shown in fig. 3, according to an embodiment of the present application, the hybrid driving apparatus includes a first case 300, a second case 310, and an end cap 320, wherein the first case 300, the second case 310, and the end cap 320 are all integrally formed.

The engine 10 is connected with the first box body 300, the first box body 300 and the second box body 310 define a first accommodating cavity, and the second box body 310 and the end cover 320 define a second accommodating cavity; a first main shaft 40, a first auxiliary shaft 50, a second main shaft 70, a second auxiliary shaft 80, a first transmission mechanism 60, a second transmission mechanism 90, a third transmission mechanism 100, a fourth transmission mechanism 130, a differential 120 and a clutch 100 are arranged in the first accommodating cavity; the first motor 20 and the second motor 30 are disposed in the second accommodating chamber, the first motor 20 and the second motor 30 are arranged in parallel in the second accommodating chamber and are separated by a partition plate, a motor case of the first motor 20 and a motor case of the second motor 30 are integrated with the second case, in other words, the second case 310 serves as a motor case of the first motor 20 and a motor case of the second motor 30.

The dual-motor controller 140 is disposed above the second box 310 and fixedly connected to the second box 310, and the second box 310 is provided with a wire passing hole for a wire harness to pass through, so that the dual-motor controller 140 is electrically connected to the first motor 20 and the second motor 30.

As shown in fig. 5, in the embodiment of the present application, the hybrid driving device includes a bearing baffle 400, the two ends of the first auxiliary shaft 50 are respectively provided with a first motor 20 and a first bearing, the two ends of the second main shaft 70 are respectively provided with a second motor 30 and a second bearing, the first bearing and the second bearing are prone to play during the operation of the motors, to solve the above problem, the bearing baffle 400 is disposed on the side of the first bearing away from the box body, the bearing baffle 400 is tightly attached to the side of the first bearing away from the box body, and the bearing baffle 400 is fixed on the box body through a fastening bolt, so that the bearing baffle presses the first bearing, the bearing baffle is disposed on the side of the second bearing away from the box body, the bearing baffle is tightly attached to the side of the second bearing away from the box body, and the bearing baffle is fixed on the box body through the fastening bolt, so that the bearing baffle 400 presses the second bearing, the first bearing and the second bearing are in the operation of the motors, play does not occur.

The middle of the bearing baffle 400 is provided with a large through hole 401 for the first auxiliary shaft 40 or the second main shaft 70 to pass through, and the bearing baffle 400 is provided with a plurality of small through holes 402 for the fastening bolts to pass through at intervals in the circumferential direction.

According to the hybrid electric vehicle provided by the embodiment of the application, through the hybrid driving device, the hybrid electric vehicle can have multiple driving modes, is low in cost and high in endurance, the economy of the hybrid electric vehicle is effectively improved, and the use expectation of a user is met.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (12)

1. A hybrid drive apparatus, characterized by comprising:

an engine;

the first main shaft is connected with the engine;

the first auxiliary shaft is arranged in parallel with the first main shaft and is connected with the first main shaft through a first transmission mechanism;

a first electric machine coupled to the first countershaft;

a second motor;

the second main shaft is connected with the second motor;

the second auxiliary shaft is arranged in parallel with the second main shaft and is connected with the second main shaft through a second transmission mechanism; the second auxiliary shaft is arranged in parallel with the first main shaft and is connected with the first main shaft through a third transmission mechanism;

the clutch is arranged on the first main shaft and enables the first main shaft to be in power coupling or disconnection with the third transmission mechanism;

the second auxiliary shaft is connected with the differential through a fourth transmission mechanism;

the first motor and the second motor are arranged in parallel;

a dual motor controller comprising a first motor control module and a second motor control module.

2. A hybrid drive of claim 1, comprising a first pump and a second pump, said first pump being power coupled to said first main shaft, said engine outputting power to said first pump through said first main shaft; the second pump is in power coupling with the second main shaft, and the second motor outputs power to the second pump through the second main shaft.

3. A hybrid drive as claimed in claim 1 or 2, wherein said first transmission comprises a first gear and a second gear in mesh with each other, said first gear being fixedly connected to said first main shaft and said second gear being fixedly connected to said first secondary shaft.

4. A hybrid drive as set forth in claim 3 wherein said second gear train includes third and fourth intermeshing gears, said third gear fixedly connected to said second main shaft and said fourth gear fixedly connected to said second countershaft.

5. The hybrid drive of claim 4, wherein said third gear train includes a fifth gear and a sixth gear in mesh with each other, said fifth gear being connected to said clutch, said clutch dynamically coupling or decoupling said first main shaft to said fifth gear, said sixth gear being fixedly connected to said second countershaft.

6. The hybrid drive of claim 5, wherein said fourth gear and said sixth gear are the same gear.

7. The hybrid drive of claim 6, wherein said fourth gear train includes a seventh gear and an eighth gear, said seventh gear being fixedly connected to said second countershaft and said eighth gear being fixedly connected to said differential.

8. The hybrid drive apparatus according to claim 2, wherein a first line and a second line are provided in the first main shaft, and the engine drives the first pump to pump oil, outputs hydraulic oil to the clutch through the first line to drive the clutch to operate, or outputs hydraulic oil to the clutch through the second line to cool the clutch.

9. A hybrid drive unit as set forth in claim 2 including a first case, a second case, and an end cover;

the engine is connected with a first box body, a first containing cavity is defined by the first box body and a second box body, and a second containing cavity is defined by the second box body and an end cover;

a first main shaft, a first auxiliary shaft, a second main shaft, a second auxiliary shaft, a first transmission mechanism, a second transmission mechanism, a third transmission mechanism, a fourth transmission mechanism, a differential and a clutch are arranged in the first accommodating cavity;

a first motor and a second motor are arranged in the second accommodating cavity;

the double-motor controller is arranged above the second box body and is fixedly connected with the second box body.

10. The hybrid drive unit according to claim 9, comprising a bearing shield having a large through hole provided in a middle thereof for a shaft to pass through, the bearing shield having a plurality of small through holes provided at intervals in a circumferential direction for a fastening bolt to pass through.

11. The hybrid drive unit of claim 10, wherein the bearing retainer is disposed on a side of the bearing facing away from the housing, the bearing retainer is tightly attached to the side of the bearing facing away from the housing, and the bearing retainer is fixed to the housing by the fastening bolt.

12. A hybrid vehicle characterized by comprising the hybrid drive device according to any one of claims 1 to 11.

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