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Power-assisted steering system and vehicle

A power steering and steering motor technology, which is applied to power steering mechanisms, steering mechanisms, vehicle components, etc., can solve the problems of low system safety and power steering system safety, and achieve the effect of improving driving safety.

Active Publication Date: 2021-02-02
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a power steering system to solve the problem of low system safety; meanwhile, it also provides a vehicle to solve the problem of low safety of the power steering system of existing vehicles

Method used

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  • Power-assisted steering system and vehicle
  • Power-assisted steering system and vehicle

Examples

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Embodiment Construction

[0018] Vehicle Example:

[0019] The vehicle proposed in this embodiment includes such as figure 2 The power steering system shown includes a steering motor and a controller, a storage battery, a power battery, and a DC / DC circuit (ie figure 2 DCDC) and low-voltage power supply lines (generally 12 or 24V lines, the same voltage as the A-level voltage power supply).

[0020] The battery is connected upstream of the low-voltage power supply line, the steering motor and controller are connected in parallel on the low-voltage power supply line, the power battery is connected to the high-voltage side of the DC / DC circuit, the low-voltage side of the DC / DC circuit is connected in parallel to the low-voltage power supply line, and the DC / DC circuit An undervoltage relay (that is, a transistor-type undervoltage relay, also known as a static undervoltage relay) is installed in series on the low-voltage power supply line upstream of the parallel connection point on the low-voltage si...

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PUM

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Abstract

The invention relates to a power-assisted steering system and a vehicle, and belongs to the technical field of new energy vehicle steering. The system comprises a steering motor, a controller, a storage battery, a power battery, a DC / DC circuit and a low-voltage power supply line; the storage battery is connected to the upstream of the low-voltage power supply line, the steering motor and the controller are connected to the low-voltage power supply line in parallel, the power battery is connected with the high-voltage side of the DC / DC circuit, and the low-voltage side of the DC / DC circuit isconnected to the low-voltage power supply line; an undervoltage relay used for detecting short circuit or undervoltage of the storage battery is arranged on the low-voltage power supply line on the upstream of the low-voltage side parallel connection point of the DC / DC circuit in series, and a control coil of the undervoltage relay is directly connected with the storage battery in parallel. According to the system, when the storage battery is short-circuited or under-voltage, the storage battery is disconnected with the DC / DC circuit, so that the output voltage of the DC / DC circuit is prevented from being lowered, the power battery and the DC / DC circuit provide A-level voltage power supply for the steering motor and the controller, the power-assisted steering state is maintained, and the driving safety is improved.

Description

technical field [0001] The invention relates to a power steering system and a vehicle, belonging to the technical field of new energy vehicle steering. Background technique [0002] The steering system of modern traditional fuel (gasoline, diesel, CNG, LNG) vehicles includes the following types: mechanical steering system MS, hydraulic power steering system HPS, electrohydraulic power steering system EHPS, electric power steering system EPS. In order to achieve low-speed lightness, high-speed without "fluttering" (that is, the steering force is too light, the road feeling is not strong) to improve the handling stability, while also considering the situation of energy saving, the electro-hydraulic power steering system EHPS and the electric power steering system EPS have been widely used application. [0003] The power steering of the EHPS is provided by the steering motor driving the steering oil pump, and the control circuit of the steering motor and the controller (herein...

Claims

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Application Information

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IPC IPC(8): B62D5/04B60L1/00B60L3/00
CPCB60L1/00B60L3/00B60L2210/10B62D5/04B62D5/0463
Inventor 闫帅林陈运来王浩宇
Owner ZHENGZHOU YUTONG BUS CO LTD
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