Variable air pressure braking energy recovery device and method

Abstract

The invention discloses a variable air pressure braking energy recovery device and method. The recovery device comprises a brake air pump, an air storage tank, a controller, a turbine, a double-rotor contra-rotating motor, a pressure sensor arranged in the air storage tank and a first exhaust pipe arranged between an exhaust valve of the brake air pump and the air storage tank; the first exhaust pipe is used for providing air pressure for the air storage tank by the brake air pump through the first exhaust pipe when a vehicle is braked; the controller receives a braking signal from a vehicle braking system and a pressure signal in the air storage tank from the pressure sensor, and when the pressure in the air storage tank reaches the braking air pressure P, the air storage tank is controlled to release air to the turbine so that the turbine can rotate; and the turbine drives the double-rotor contra-rotating motor to conduct contra-rotating motion through an output shaft, and energy conversion is completed and stored in the form of electric energy. The energy consumption can be reduced, the energy utilization rate can be improved, and finally the vehicle using cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of automobile braking, and in particular relates to a variable air pressure braking energy recovery device and a recovery method. Background technique [0002] In modern society, automobiles have become an indispensable means of transportation in people's life. At present, the power of automobiles has changed from traditional fossil fuels to various forms, but fossil fuels and electric energy are still the main sources. During the working process, the car will frequently receive brake commands from the driver, and when the brake command is executed, the gas stored in the brake air pump is discharged, and when the brake is canceled, it will be re-inhaled for a cycle. The lost gas is often compressed by the air pump and accompanied by air pressure energy. When it is discharged, the energy is also taken away. Taking urban road buses as an example, a bus is often accompanied by about 50 platforms in a cycle rou...

AI Technical Summary

Problems solved by technology

Taking urban road buses as an example, a bus is often accompanied by about 50 platforms in a cycle route. Regardless of the braking situation in the middle and at the intersection, it also needs to brake 50 times when each shift is completed. The pressure value of the air pump is maintained at 9 ~ 10Mpa, so that the exhaust process is accompanied by a large amount of energy loss

[0003] Due to the problem of vehicle braking during the driving process, especially in urban buses, even though most of the cities are now converted from fuel to electric power in the past, the exhaust method of the brake air pump has not changed, which causes the current situation. There is continuous loss of energy and waste of resources

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