Electric vehicle fault analysis method, device and equipment and vehicle
A fault analysis method and technology of electric vehicles, applied in the direction of braking safety system, etc., can solve problems such as misjudgment of vacuum pump fault signals, affecting the driving experience of car owners, etc., and achieve the effect of improving driving experience
Active Publication Date: 2020-09-11
湖南智点智能新能源汽车有限公司
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[0004] The purpose of the present invention is to provide an electric vehicle fault analysis method, device, equipment and vehicle, aiming to solve the technical problem in the prior art that the vacuum pump fault signal is misjudged and thus affects the driving experience of the car owner
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other features. , whole, step, operation, element, component and / or the presence or addition of a collection thereof.
[0042] It should also be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention. As us...
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The invention provides an electric vehicle fault analysis method, device and equipment and a vehicle. The method comprises the steps that a vacuum pump fault signal and a brake switch signal of the electric vehicle are acquired, wherein the vacuum pump fault signal comprises an air leakage fault level, and the brake switch signal comprises the switching frequency of a brake switch; when the air leakage fault level is a preset first level and the switching frequency is greater than or equal to a first preset threshold value, a first prompt instruction is sent out, wherein the first prompt instruction is used for indicating a display screen of the electric vehicle to display preset first prompt information, and the first prompt information is used for reminding a driver to reduce the operation frequency of a brake switch pedal. The invention further provides a fault diagnosis device, a vehicle and fault diagnosis equipment. The situation that due to habitual operation of a driver, a brake boosting system misreports faults is effectively filtered out, and the driving experience of the driver is improved under the situation that the safety level of the vehicle is not reduced.
Description
technical field [0001] The invention belongs to the technical field of brake boosting systems, and in particular relates to an electric vehicle fault analysis method, device, equipment and vehicle. Background technique [0002] When the car brakes, it needs a brake booster. The traditional car uses the negative pressure of the intake manifold when the engine is working as the brake booster. Since the electric car has no engine and no device for generating negative pressure, a vacuum pump needs to be installed on the electric car. , used to provide negative pressure as brake booster. The controller on the vacuum pump needs to control the work of the vacuum pump in real time and feed back the fault status of the booster system to the vehicle controller. When the car is in a traffic jam or goes downhill for a long time, the vacuum degree of the brake booster system will drop sharply when the owner frequently steps on the brakes. The pumping power of the vacuum pump is insuffic...
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IPC IPC(8): B60T17/22
CPCB60T17/22
Inventor 叶卫国罗锐邓姜平
Owner 湖南智点智能新能源汽车有限公司