Energy recovery control method of double-planet-row four-axis hybrid power system

A technology of a hybrid power system and a double planetary row is applied in the field of energy recovery control of a double planetary row four-shaft hybrid power system, which can solve the problems of poor energy recovery effect, low motor torque, small motor torque, etc., so as to improve the energy recovery efficiency. , to avoid the effect of high speed and low torque

Active Publication Date: 2015-02-11
江西鼎盛新材料科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the technical problems of the current energy recovery control method that the motor torque is small and the energy recovery effect is poor when the vehicle speed is high, and provides an energy recovery control method for a dual-pla

Method used

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  • Energy recovery control method of double-planet-row four-axis hybrid power system
  • Energy recovery control method of double-planet-row four-axis hybrid power system

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Embodiment

[0046] Embodiment: The energy recovery control method of a dual-planetary four-shaft hybrid system in this embodiment, such as figure 1 shown, including the following steps:

[0047] S1: When the car brakes, if the car is in the pure electric running mode and the first brake is in the open state before braking, then perform step S2, if the car is in the pure electric running mode and the first brake is in the locked state before braking, Then execute step S3, if the vehicle is in the hybrid operation mode before braking and the second brake is in the open state, then perform step S4, if the vehicle is in the hybrid operation mode before braking and the second brake is in the locked state, then perform step S4 S5;

[0048] S2: The brake control unit obtains the braking torque TH required by the current car according to the current brake pedal opening BPS and the current vehicle speed V look-up table and sends it to the vehicle control unit. The motor controller sets the first ...

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Abstract

The invention discloses an energy recovery control method of a double-planet-row four-axis hybrid power system. The method comprises the following steps: an automobile enters a purely electric braking mode opened by a first brake if the automobile is in a purely electric operating mode before being braked and the first brake is in an open mode when the automobile is braked, the automobile enters a purely electric braking mode locked by the first brake if the automobile is in the purely electric operating mode before being braked and the first brake is in a locking state, the automobile enters a hybrid power braking mode opened by a second brake if the automobile is in a hybrid power operating mode and the second brake is in a starting mode, and the automobile enters a hybrid power braking mode locked by the second brake if the automobile is in the hybrid power operating mode and the second brake is in a locking mode. The method can select the corresponding braking mode according to different operating modes of the automobile before braking, and can avoid the situation of high rotating speed and low torque of a motor in the condition of high vehicle speed, thereby improving the energy recovery efficiency.

Description

technical field [0001] The invention relates to the technical field of braking energy recovery of energy vehicles, in particular to an energy recovery control method for a dual-planetary four-axis hybrid power system. Background technique [0002] During the braking process of the vehicle, under the inertia of the vehicle, the wheel drives the outer ring gear to rotate, and the motor coupled with the outer ring gear rotates accordingly, generating electromotive force and forming a charging current. The battery recovers this part of electric energy and stores it in the battery. The motor can perform single-motor braking and power generation or dual-motor combined braking and power generation under the control command. [0003] In the prior art, only one electric motor is used for braking energy recovery. When the vehicle speed is high, the rotational speed of the electric motor is also high, so that the electric braking torque that the electric motor can provide is relatively...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W10/06B60W10/08B60W10/18B60L7/18B60K6/365B60W20/10B60W20/14
CPCB60W10/06B60W10/08B60W10/196B60W2510/081B60W2520/10B60W2540/12B60W2710/06B60W2710/08B60W2710/18Y02T10/62Y02T10/92
Inventor 潘青贵王晨焦敏余才光于海生马智涛张彤王瑞平
Owner 江西鼎盛新材料科技有限公司
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