Automobile hybrid power driving system

Abstract

The utility model provides an automobile hybrid power driving system which can work independently in two modes of a traditional transmission and electric control, a retarder device does not need to be added, the overall structure is simplified, and the structure is more convenient. The transmission connected with the engine and the motor assembly connected with the main power source can work alternately, power is output on one bridge, gear shifting on the other bridge is achieved, and the gear shifting efficiency during downhill gear shifting is improved. In addition, when electric energy is used for driving, the main power supply provides electric energy for the motor assembly, when fuel oil is used for driving, the main power supply can recover the electric energy, the overall energy consumption is reduced, the resource cost is saved, and the device is suitable for industrial large-scale use and popularization.

Description

Technical Field

[0001] The utility model belongs to the field of commercial vehicle driving, and in particular relates to an automobile hybrid power driving system. Background Art

[0002] At present, the fuel commercial vehicle drive system uses an engine, a gearbox, and a mechanical bridge with a mechanical differential. Due to the limitations of engine power and torque, the transmission needs to match multiple gears; and the speed ratio range of the transmission is relatively wide, resulting in traditional fuel vehicles requiring engine exhaust braking or adding a retarder device to achieve downhill braking. The overall structure is complicated, the speed change efficiency is low, and the energy consumption is high. Utility Model Content

[0003] The utility model aims to provide a hybrid vehicle driving system to solve the problems of complicated structure of fuel commercial vehicle driving system in the prior art, low speed change efficiency and high energy consumption during downhill braking.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A hybrid vehicle driving system comprises a vehicle frame, wherein an engine is arranged on the frame; an output end of the engine is connected to an input end of a gearbox; and the output end of the gearbox is connected to an input end of a differential through a transmission shaft.

[0006] The first output end of the differential is connected to the right shaft of the middle bridge of the car, and the second output end of the differential is connected to the left shaft of the middle bridge;

[0007] It also includes a main power supply, wherein the output end of the main power supply is connected to the input end of the controller; the output end of the controller is connected to the input end of the motor assembly;

[0008] The first output end of the motor assembly is connected to the right shaft of the rear axle of the automobile, and the second output end of the motor assembly is connected to the left shaft of the rear axle.

[0009] The utility model also has the following features:

[0010] Furthermore, the engine, gearbox, differential, motor assembly, controller and main power supply are all assembled to corresponding positions of the frame by means of mounting point installation.

[0011] Furthermore, it also includes a central controller, which is connected to the engine, the gearbox, the controller and the main power supply respectively through communication cables.

[0012] Furthermore, the main power supply is connected to the controller via a high voltage cable;

[0013] The controller is connected to the motor assembly via a high-voltage cable.

[0014] Furthermore, the gearbox output shaft is connected to the transmission shaft via an output flange.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] In the automobile hybrid drive system of the utility model, it can work independently through two modes, namely, the traditional transmission and the electric control, without adding a retarder device, simplifying the overall structure and making the structure more convenient. The transmission connected to the engine and the motor assembly connected to the main power supply can work alternately, realizing power output on one bridge and shifting on the other bridge, thereby improving the shifting efficiency when shifting downhill. In addition, when using electric energy drive, the main power supply provides electric energy to the motor assembly, and when using fuel drive, the main power supply can recover electric energy, reducing overall energy consumption, saving resource costs, and being suitable for large-scale use and promotion in industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The figure is a schematic diagram of the automobile hybrid power drive system of the utility model.

[0018] The meanings of the numbers in the figure are: 1. Frame; 2. Engine; 3. Gearbox; 4. Drive shaft; 5. Differential; 6. Middle bridge; 7. Main power supply; 8. Controller; 9. Motor assembly; 10. Rear axle; 11. Central controller; 12. Output flange. DETAILED DESCRIPTION

[0019] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art. For example, the engine is a known commonly used engine.

[0020] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0021] like Figure 1 As shown, a hybrid vehicle driving system is characterized in that it includes a frame 1, an engine 2 is arranged on the frame 1; the output end of the engine 2 is connected to the input end of a gearbox 3; the output end of the gearbox 3 is connected to the input end of a differential 5 through a transmission shaft 4;

[0022] The first output end of the differential 5 is connected to the right shaft of the middle bridge 6, and the second output end of the differential 5 is connected to the left shaft of the middle bridge 6;

[0023] The automobile hybrid drive system also includes a main power supply 7, the output end of the main power supply 7 is connected to the input end of the controller 8; the output end of the controller 8 is connected to the input end of the motor assembly 9;

[0024] The first output end of the motor assembly 9 is connected to the right shaft of the rear axle 10 , and the second output end of the motor assembly 9 is connected to the left shaft of the rear axle 10 .

[0025] In the automobile hybrid drive system of the utility model, it can work independently through the two modes of traditional gearbox speed change and electric control, without adding a retarder device, simplifying the overall structure and making the structure more convenient. The gearbox 3 connected to the engine 2 and the motor assembly 9 connected to the main power supply 7 can work alternately, realizing power output on one bridge and gear shifting on the other bridge; improving the gear shifting efficiency when shifting downhill.

[0026] In addition, when using electric energy to drive, the main power supply 7 provides electric energy to the motor assembly 9, and when using fuel to drive, the main power supply 7 can recover electric energy, which reduces the overall energy consumption, saves resource costs, and is suitable for large-scale use and promotion in industry.

[0027] As a preferred solution, the engine 2, the gearbox 3, the differential 5, the motor assembly 9, the controller 8 and the main power supply 7 are all assembled to the corresponding positions of the frame 1 through the mounting points. The assembly method using the mounting points enhances the convenience during installation and the stability during use.

[0028] As a preferred solution, it also includes a central controller 11, which is connected to the engine 2, the gearbox 3, the controller 8 and the main power supply 7 respectively through communication cables.

[0029] The central controller 11 adopts a known controller, and is connected to the engine 2, the gearbox 3, the controller 8 and the main power supply 7 respectively, and controls the above components through known existing algorithms;

[0030] According to conventional selection, the central controller 11 should also be connected to the accelerator, brake and handle of the car.

[0031] When fuel is used for driving, the central controller 11 receives signals from the accelerator, brake and handle, calculates the required torque using a conventional algorithm, and transmits instructions to the engine 2 and the transmission 3 during the gear shifting process to perform the gear shifting operation.

[0032] When electric drive is used, the central controller 11 commands the main power supply 7 to supply power according to the maximum charge and discharge power of the main power supply 7 , and the controller responds to the torque / speed command and outputs it to the right shaft of the rear axle 10 and the left shaft of the rear axle 10 .

[0033] When electric energy recovery is performed, the motor assembly 9 executes torque response to feed power to the main power supply 7 to complete electric energy recovery.

[0034] Specifically, the main power supply 7 is connected to the controller 8 via a high-voltage cable;

[0035] The controller 8 is connected to the motor assembly 9 via a high-voltage cable.

[0036] Specifically, the output shaft of the gearbox 3 is connected to the transmission shaft 4 via the output flange 12 .

Claims

1. A hybrid vehicle driving system, comprising a vehicle frame (1), an engine (2) being arranged on the vehicle frame (1); an output end of the engine (2) being connected to an input end of a gearbox (3); and an output end of the gearbox (3) being connected to an input end of a differential (5) via a transmission shaft (4); It is characterized in that The first output end of the differential (5) is connected to the right shaft of the middle bridge (6) of the automobile, and the second output end of the differential (5) is connected to the left shaft of the middle bridge (6); It also includes a main power supply (7), wherein the output end of the main power supply (7) is connected to the input end of the controller (8); the output end of the controller (8) is connected to the input end of the motor assembly (9); The first output end of the motor assembly (9) is connected to the right shaft of the rear axle (10) of the automobile, and the second output end of the motor assembly (9) is connected to the left shaft of the rear axle (10).

2. The automotive hybrid drive system according to claim 1, characterized in that: The engine (2), gearbox (3), differential (5), motor assembly (9), controller (8) and main power supply (7) are all assembled to corresponding positions of the vehicle frame (1) by means of mounting point installation.

3. The automotive hybrid drive system according to claim 1, characterized in that: It also includes a central controller (11), which is connected to the engine (2), the gearbox (3), the controller (8) and the main power supply (7) respectively through communication cables.

4. The automotive hybrid drive system according to claim 1, characterized in that: The main power supply (7) is connected to the controller (8) via a high-voltage cable; The controller (8) is connected to the motor assembly (9) via a high-voltage cable.

5. The automotive hybrid drive system according to claim 1, characterized in that: The output shaft of the gearbox (3) is connected to the transmission shaft (4) via an output flange (12).

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