Electric vehicle intelligent high-voltage delay power-off control method and electric vehicle
An electric vehicle and control method technology, applied in electric vehicles, vehicle components, electrical devices, etc., can solve the problems of rescue power-on failure, affecting the life of high-voltage relays, affecting the life of relays, etc., and achieve the effect of avoiding high-voltage repeated power-on and off
Active Publication Date: 2021-10-12
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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Problems solved by technology
[0002] The control method for powering off the vehicle in the prior art usually adopts the method of immediately turning off the high-voltage power after receiving the power-off command. For some special scenarios, there are undesired power-off requests that cannot meet the requirements or affect the driver. Affect the life of high voltage relay
For example, the driver just gets off the car temporarily and returns soon. If the high voltage is powered off at this time and the relay is disconnected, it will cause the high voltage to be powered on and off repeatedly in a short period of time, which will affect the life of the relay.
For another example, if the battery of the vehicle loses power or is damaged, the driver needs to call for rescue and use the battery of another vehicle to power on. Cause rescue power-on failure
Method used
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[0043] 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 specific 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.
[0044] In order to make the description of the present disclosure more detailed and complete, the following provides an illustrative description of the implementation modes and specific examples of the present invention; but this is not the only form for implementing or using the specific embodiments of the present invention. The description covers features of various embodiments as well as method steps and their sequences for constructing and operating those embodiments. However, other embodiments can also be used to achieve the same or equivalent functions and step sequences.
[0045] E...
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The invention relates to the technical field of electric vehicles, in particular to an intelligent high-voltage delayed power-off control method for electric vehicles and the electric vehicle. The control method includes: after detecting the power-off signal, generating a low-voltage power-off command and a high-voltage power-off command; controlling the vehicle to perform low-voltage power-off according to the low-voltage power-off command, and starting a delay timer; During the process, it is judged whether the vehicle has a re-power-on signal; if the vehicle does not have a re-power-on signal, when the delay timer ends, the entire vehicle is controlled to be powered off at high voltage according to the high-voltage power-off command. The intelligent high-voltage delayed power-off control method and the vehicle of the present invention, after detecting the power-off signal, first perform low-voltage power-off, and then control the entire vehicle to perform high-voltage power-off after the delayed power-off time passes, adapting to various Scenarios, avoid repeated high-voltage power-on and power-off in a short period of time.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an intelligent high-voltage delayed power-off control method for electric vehicles and the electric vehicle. Background technique [0002] The control method for powering off the vehicle in the prior art usually adopts the method of immediately turning off the high-voltage power after receiving the power-off command. For some special scenarios, there are undesired power-off requests that cannot meet the requirements or affect the driver. Affect the life of the high voltage relay. For example, the driver just gets off the car temporarily and returns soon. If the high voltage is powered off at this time and the relay is disconnected, it will cause the high voltage to be powered on and off repeatedly in a short period of time, which will affect the life of the relay. For another example, if the battery of the vehicle loses power or is damaged, the driver needs to call for...
Claims
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IPC IPC(8): B60L3/00
CPCB60L3/00
Inventor 戴军
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD