Motor-based speed-increase-controllable braking energy recycling device and method for hybrid electric vehicle
A technology of braking energy recovery and hybrid electric vehicles, which is applied in the direction of electric power devices, power devices, control devices, etc.
Active Publication Date: 2012-11-07
FUJIAN FUGONG EV TECH
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Problems solved by technology
At present, it has not been found that in the process of regenerative braking, hybrid vehicles use special devices to increase the speed of generators.
Method used
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[0016] like figure 2 As shown, the present invention is based on a hybrid electric vehicle braking energy recovery device with controllable speed-up of the motor, which includes a motor 1 and a planetary gear box 2, and the planetary gear system 3 includes a sun gear 31, a planetary gear set 32, and a planetary carrier 33 And the ring gear 34, the planetary gear set 32 is rotatably set on the planet carrier 33, the planetary gear set 32 is distributed around the sun gear 31 and meshes with the sun gear 31, and the planetary gear set 32 is provided with a ring gear 34 and meshes with the ring gear 34, The planet carrier 33 is provided with a brake 4; the output shaft of the motor 1 is connected to the output shaft 21 of the gearbox 2, the sun gear 31 is fixed on the output shaft 21 of the gearbox 2, and the output shaft 21 of the gearbox 2 and the planet carrier 33 A clutch 5 is provided, the ring gear 34 is fixedly coupled with one end of the input shaft 7 , and the oth...
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The invention discloses a motor-based speed-increase-controllable braking energy recycling device and method for a hybrid electric vehicle. The device comprises a motor, a speed changing box and a planet wheel system, wherein a planet wheel set is rotatably sleeved on a planet wheel frame; the planet wheel set is distributed around a sun wheel and is engaged with the sun wheel; a gear ring is sleeved outside the planet wheel set and the planet wheel set is engaged with the gear ring; the planet wheel frame is provided with a brake and the motor is coupled with an output shaft of the speed changing box; the sun wheel is fixedly arranged on the output shaft of the speed changing box; a clutch is arranged between the output shaft of the speed changing box and the planet wheel frame; and the gear ring is fixedly coupled with one end of an input shaft and the other end of the input shaft is coupled with a transmission shaft of a vehicle wheel. According to the motor-based speed-increase-controllable braking energy recycling device and method, the structure of a planet wheel system is improved to obtain the device, by which the rotating speed of the output end of the device can be increased according to requirements under the condition that the rotating speed of an input end of the device is gradually reduced. The device disclosed by the invention drives a generator to accelerate the speed, so that a needed and larger braking counter torque can be obtained; and meanwhile, the purpose of increasing and recycling power generation current is achieved.
Description
technical field [0001] The invention relates to a hybrid electric vehicle, in particular to a device and method for efficiently recovering braking energy based on a controllable speed-up of a motor in a hybrid electric vehicle. Background technique [0002] In a new energy hybrid vehicle driven by an electric motor, the energy-saving effect of the vehicle is closely related to the ratio of the vehicle's kinetic energy converted into regenerative energy during braking. When a hybrid vehicle brakes, the more vehicle kinetic energy is converted into regenerative energy and stored, the more significant the energy saving effect will be. The braking process with recuperation of braking energy is called regenerative braking. [0003] The regenerative braking principle of new energy hybrid electric vehicles is as follows: figure 1 As shown, during the regenerative braking process of the vehicle, the control system of the vehicle converts the drive motor into a generator mode, and ...
Claims
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IPC IPC(8): F16H3/44
CPCB60K6/36F16H3/44B60K17/16B60W30/18127B60K1/00B60K2001/001F16H3/721
Inventor 孙秋林张德平陈国忠
Owner FUJIAN FUGONG EV TECH