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Dual-motor torque vectoring system, control method and automobile

A technology of torque vectoring and control methods, applied in control devices, vehicle components, electric power devices, etc., can solve problems such as limited motor power, inability to use two-wheel drive models, and restrictions on two-wheel drive models, so as to achieve low difficulty in system control, The effect of mature technology and process and high degree of generalization

Inactive Publication Date: 2021-02-26
BAIC MOTOR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it is a coaxial single-stage reduction mechanism, the power of its motor is limited, so this structure cannot be used in two-wheel drive models; its clutch is directly placed between the half shaft and the reducer, causing its impact on the strength and durability of the clutch The requirements are very high; and it is impossible to drive the vehicle with a single motor, and it cannot guarantee the efficient operation of the motor, which affects the economy of the system; many disadvantages of this structure limit its application to two-wheel drive vehicles and large-scale promotion

Method used

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  • Dual-motor torque vectoring system, control method and automobile
  • Dual-motor torque vectoring system, control method and automobile
  • Dual-motor torque vectoring system, control method and automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Such as figure 1 As shown, the high-efficiency coaxial dual-motor torque vectoring system mechanism of this embodiment includes a first motor M1, a second motor M2, a first double-row planetary mechanism G1, a second double-row planetary mechanism G2, a third clutch C0, The first clutch C1 and the second clutch C2.

[0068] Among them, the first motor M1, the second motor M2, the first double-row planetary mechanism G1, the second double-row planetary mechanism G2, the third clutch C0, the first clutch C1, and the second clutch C2 are packaged and arranged inside the bridge (Fig. The remainder of the bridge system is not shown).

[0069] Specifically, the rotor shaft of the first motor M1 is connected to the input end of the first double-row planetary mechanism G1 through the first clutch C1, and the rotor shaft of the second motor M2 is connected to the input end of the second double-row planetary mechanism G2 through the second clutch C2. The rotor shaft of the firs...

Embodiment 2

[0071] Refer below figure 2 , describing an embodiment of a control method for a coaxial dual-motor torque vectoring system under different operating conditions.

[0072] Such as figure 2 As shown, a high-efficiency coaxial dual-motor torque vectoring system single-motor drive vehicle driving control method is disclosed, which is suitable for the normal straight-going situation of the vehicle. The third clutch C0 is closed, the first clutch C1 is closed, and the second clutch C2 is closed, the first motor M1 participates in driving and the second motor M2 does not work (or the second motor M2 participates in driving and the first motor M1 does not work), the power is respectively The transmission is transmitted to the left and right wheels through the first double-row planetary mechanism G1 and the second double-row planetary mechanism G2 to drive the vehicle to travel.

[0073] In addition, if figure 2 As shown, it can also be applied to the control method when there is...

Embodiment 3

[0077] Such as image 3 As shown, this embodiment is an energy recovery control method for a high-efficiency coaxial dual-motor torque vectoring system, which is applicable to the situations of coasting energy recovery and braking energy recovery.

[0078] 1) Coasting energy recovery: During the coasting process of the vehicle when the driver releases the accelerator, the third clutch C0 is closed, the first clutch C1 is closed, and the second clutch C2 is closed, and the negative torque provided by the first motor M1 (or the second motor M2) is controlled. The transmission is transmitted to the left and right wheels through the first double-row planetary mechanism G1 and the second double-row planetary mechanism G2 respectively, so that the vehicle decelerates and slides, and ensures that the first motor M1 or the second motor M2 works in a high-efficiency area to generate electricity as much as possible, so that Efficient recovery of vehicle sliding energy.

[0079] 2) Brak...

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Abstract

The invention provides a dual-motor torque vectoring system, a control method and an automobile. The double-motor torque vectoring system comprises a first double-row planetary mechanism having the output end connected with a left wheel, a second double-row planetary mechanism having the output end connected with a right wheel, a first motor having a rotor shaft connected with the input end of thefirst double-row planetary mechanism through a first clutch, and a second motor having a rotor shaft connected with the input end of the second double-row planetary mechanism through a second clutch;the rotor shaft of the first motor is connected with the rotor shaft of the second motor and the second clutch through a third clutch. The efficient coaxial double-motor torque vectoring system is simple in structure, mature in technology and process, high in part universalization degree, small in system control difficulty and capable of adapting to various working conditions.

Description

technical field [0001] The invention belongs to the field of automobiles, and relates to a dual-motor torque vector control technology for new energy vehicles, and more specifically, relates to a dual-motor torque vector system and a control method thereof, as well as a vehicle with the system. Background technique [0002] With the rapid development of the automobile industry, drivers and occupants have higher and higher performance requirements for vehicles, among which economy and handling are the two most concerned performance indicators. Currently, only the Honda SH-AWD structure is available in the market to implement torque vectoring control, which is applied to the rear axle of four-wheel drive vehicles. However, because it is a coaxial single-stage reduction mechanism, the power of its motor is limited, so this structure cannot be used in two-wheel drive models; its clutch is directly placed between the half shaft and the reducer, causing its impact on the strength ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/02B60K17/02B60K17/04
CPCB60K1/02B60K17/02B60K17/046
Inventor 王永广李文军
Owner BAIC MOTOR CORP LTD
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