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Braking system for braking an electric vehicle

A technology for electric vehicles and braking systems, applied in electric braking systems, electric vehicles, control/regulation systems, etc., can solve the problems of regenerative braking limitations, excessive design costs, etc., achieve consistent braking feeling, reduce wear, The effect of improving fuel efficiency

Active Publication Date: 2020-03-24
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some use cases, such as mild hybrids or other hybrids with small electric motors, regenerative braking may be limited
In these and other cases, the above solutions may be over-engineered and / or cost-prohibitive

Method used

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  • Braking system for braking an electric vehicle
  • Braking system for braking an electric vehicle
  • Braking system for braking an electric vehicle

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Embodiment Construction

[0064] It should be understood that the term "electric vehicle" or other similar terms as used herein includes motor vehicles, which typically have at least one electric motor and include motorcycles, as well as sport utility vehicles (SUVs), buses, trucks, Passenger vehicles such as commercial vehicles of all kinds, as well as hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g. derived from non-fossil energy sources) with at least an additional electric machine fuel). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, such as both gasoline-powered and electric-powered vehicles. In addition, it should be understood that the electric vehicle according to the present invention further includes other vehicles having electric motors, such as electric bicycles. In the latter case, for example, the braking system of the invention may relate to bicycle brake...

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Abstract

A braking system for braking an electric vehicle is provided. The system includes a brake pedal having a regenerative-braking range of pedal displacement from an initial position of the brake pedal toa maximal-recuperation position of the brake pedal, and a mechanical-braking range of pedal displacement starting from the maximal-recuperation position of the brake pedal. A brake controller activates deceleration of the vehicle based on the pedal displacement. The brake controller activates deceleration of the electric vehicle based on regenerative braking within the regenerative-braking rangeand based on mechanical braking within the mechanical-braking range. The regenerative-braking range is adjusted based on a state of charge of a traction battery of the electric vehicle.

Description

technical field [0001] The invention relates to a braking system for braking an electric vehicle and an electric vehicle with such a braking system. Background technique [0002] Current electric vehicles, especially hybrid vehicles, employ regenerative and / or regenerative braking techniques to regenerate the vehicle's traction battery and / or the vehicle's power equipment during braking operations by using the electric engine as a generator. Charging, thereby utilizing the maximum amount of kinetic energy of the vehicle. By employing regenerative braking, the range of electric vehicles can be increased and fuel consumption and thus CO2 can be significantly reduced 2 emissions, especially in urban traffic situations that require frequent braking and / or acceleration. [0003] In the case of conventional braking systems, usually mechanical brakes (e.g. vacuum pressure actuated friction brakes for braking the wheels) and regenerative brakes are operated in parallel, i.e. simul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/18B60L7/26B60T7/06B60T8/17
CPCB60L7/18B60L7/26B60T7/06B60T8/17B60T1/10B60T7/042Y02T10/72Y02T10/70B60W2510/244B60W30/18127B60L7/24B60L7/10B60L2250/28B60L2250/26G05G1/46G05G1/405B60L15/2009B60L58/12B60T2270/60B60Y2200/91B60W10/08G05G1/30B60W10/184
Inventor S·霍夫曼
Owner HYUNDAI MOTOR CO LTD
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