Suspension system, suspension structure and electric vehicle and damping control method thereof

An electric vehicle and suspension system technology, applied in the field of vehicles, can solve problems such as poor vibration reduction effect, and achieve the effect of improving ride comfort and reducing vibration

Active Publication Date: 2018-06-26
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This control method can solve the vibration caused by the ignition shock of the engine, but for the first-order vibrat...

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  • Suspension system, suspension structure and electric vehicle and damping control method thereof
  • Suspension system, suspension structure and electric vehicle and damping control method thereof
  • Suspension system, suspension structure and electric vehicle and damping control method thereof

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Embodiment Construction

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] The electric vehicle suspension system, the suspension structure, the electric vehicle and its vibration reduction control method according to the embodiments of the present invention will be described below with reference to the accompanying drawings. In an embodiment of the present invention, the electric vehicle may be a pure electric vehicle or a hybrid vehicle.

[0027] figure 1 is a block diagram of an electric vehicle suspension system according to an embodiment of the present invention, such as figure 1 As shown,...

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PUM

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Abstract

The invention discloses a suspension system of an electric vehicle. The system comprises a suspension structure, an acceleration detection device, a calculation device and a control device; the suspension structure comprises an outer support frame and an inner support frame, an excitation coil and a magnetic movable member; the outer support frame is connected to a body of the electric vehicle; the inner support frame is connected with a power assembly; an elastic member is installed between the outer support frame and the inner support frame; the magnetic movable member is positioned inside the excitation coil and is connected to the inner support frame; the acceleration detection device detects acceleration signals which are vertical to the ground of the power assembly; the calculation device calculates the acceleration amplitude based on the acceleration signals and calculates the difference between the acceleration amplitude and a amplitude threshold; the control device controls the energizing direction and the energizing current of the excitation coil according to the direction of the acceleration signals, the difference between the acceleration amplitude and the amplitude threshold. The electric vehicle suspension system can effectively reduce the vibration on the powertrain caused by the excitation of road surface. The invention also discloses a suspension structure, anelectric vehicle and a vibration damping control method thereof.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to an electric vehicle suspension system, a suspension structure, an electric vehicle including the suspension system and a shock absorption control method thereof. Background technique [0002] The suspension structure can reduce the vibration of the powertrain of the car and improve the comfort of the car. For example, an active suspension and its control method are disclosed in the related art, the method includes: ECU (Electronic Control Unit, electronic control unit) based on the signal output from the TDC sensor and the crank pulse sensor to estimate the first cycle of engine vibration The vibration state of the engine, and calculate the target current value waveform of the cycle length T1. Then, from this target current value waveform, at a constant sampling period, for example, a data set of a target current value with respect to the driving unit of the active ...

Claims

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Application Information

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IPC IPC(8): B60K1/00
CPCB60K1/00
Inventor 方海积廖银生赵高明汪虹
Owner BYD CO LTD
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