Intelligent maintenance method for low-voltage accumulator of new energy automobile

A low-voltage battery and new energy vehicle technology, applied in battery/battery traction, electric vehicles, electric traction, etc., can solve the problems of low-voltage 12V battery capacity attenuation, affecting user experience, endangering driving safety, etc., to reduce the amount of gas evolution , Shorten the time of capacity decay and prolong the service life

Active Publication Date: 2017-10-20
天津中科华誉科技有限公司
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AI Technical Summary

Problems solved by technology

When the low-voltage 12V battery loses power, it will cause vulcanization of the plate, which will cause capacity attenuation and shortened life of the low-voltage 12V battery, which seriously affects the user experience and even endangers driving safety.

Method used

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  • Intelligent maintenance method for low-voltage accumulator of new energy automobile
  • Intelligent maintenance method for low-voltage accumulator of new energy automobile
  • Intelligent maintenance method for low-voltage accumulator of new energy automobile

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Embodiment Construction

[0050] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0051] The invention provides an intelligent maintenance method for low-voltage batteries of new energy vehicles, such as Figure 1 to Figure 5 As shown, the new energy vehicle includes a vehicle controller VCU, a battery management system BMS, a high-voltage battery, a low-voltage battery, and a DC converter between the high-voltage battery and the low-voltage battery. The method includes a charging intelligent maintenance process. When the VCU detects When the user performs the charging operation on the vehicle, the VCU controls the low-voltage battery to enter the charging intelligent maintenance process. The charging intelligent maintenance process includes a constant current control stage, a constant voltage control stage and a pulse control stage in...

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Abstract

The invention discloses an intelligent maintenance method for a low-voltage accumulator of a new energy automobile and belongs to the technical field of electric automobiles. The intelligent maintenance method for the low-voltage accumulator of the new energy automobile comprises an intelligent charging maintenance process, specifically, a VCU controls the low-voltage accumulator to enter the intelligent charging maintenance process when detecting the situation that a user conducts charging operation on the automobile, wherein the intelligent charging maintenance process sequentially comprises a constant current control stage, a constant voltage control stage and a pulse control stage. According to the intelligent maintenance method, under the condition that normal working of the low-voltage accumulator is guaranteed, capacity fading of the low-voltage accumulator can be slow down while it can be guaranteed that the low-voltage accumulator is not lack of electricity, and the service life of the low-voltage accumulator is prolonged.

Description

technical field [0001] The invention relates to the technical field of control of electric vehicles and plug-in hybrid electric vehicles, in particular to an intelligent maintenance method for low-voltage storage batteries of new energy vehicles. Background technique [0002] The depletion of global oil resources and the increasing severity of global environmental pollution are important factors restricting social and economic development, and the rise of various new energy vehicles is undoubtedly an effective measure to alleviate energy pressure and reduce environmental pollution. For new energy vehicles, more electrical equipment is added, so that the low-voltage 12V battery consumes a lot of power during normal use, and at the same time, there will be dark current in the electrical equipment during the shutdown process. Therefore, during the normal use of new energy vehicles, the use of low-voltage 12V batteries for new energy vehicles consumes more electricity than tradi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02B60R16/03B60L11/18
CPCB60L50/50B60R16/02B60R16/03Y02T10/70
Inventor 冯超薛山
Owner 天津中科华誉科技有限公司
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