Charging method for low-voltage storage battery of full electric vehicle
A technology of low-voltage battery and charging method, which is applied in the direction of electric vehicle charging technology, electric vehicle, battery/fuel cell control device, etc., to achieve the effect of ensuring normal, optimizing low-voltage charging, and avoiding repeated charging
Inactive Publication Date: 2017-06-30
柳州延龙汽车有限公司
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[0003] The purpose of the present invention is to provide a pure electric vehicle low-voltage battery charging method that mainly solves the problems of repeated charging of the low-voltage battery of pure electric vehicles and ensures the reliability of charging
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[0014] The present invention is described in detail below in conjunction with accompanying drawing:
[0015] figure 2 is a system schematic diagram of an embodiment of the present invention, for figure 2 The startup control strategy for the system shown is as follows figure 1 The control shown in the block diagram is carried out according to the following steps:
[0016] (1) Detection steps of the charge state of the pure electric low-voltage battery of the vehicle: When the key is in the ACC / ON position, the battery management system starts to work, the vehicle controller is powered on, and communicates with the battery management system. The battery management system detects and judges the power of the low-voltage battery and the power battery, and sends a control signal to the next control object according to the battery power parameters.
[0017] (2) Electric vehicle low-voltage battery power detection steps: the vehicle key is in the ACC / ON gear, the vehicle battery ...
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A charging method for a low-voltage storage battery of a full electric vehicle comprises the following steps that if the electric quantity of the low-voltage storage battery is less than the minimum electric quantity W1 or between the minimum electric quantity W1 and the medium electric quantity W2, a vehicle control unit starts a DC / DC relay, and the low-voltage storage battery is charged through a power battery; if the electric quantity of the low-voltage storage battery is greater than the medium electric quantity W2, the low-voltage storage battery continues to be charged through the power battery until the electric quantity of the low-voltage storage battery reaches 100%; and if the electric quantity of the power battery is not enough, the DC / DC relay is stopped. The charging method for the low-voltage storage battery of the full electric vehicle has the advantages that by detecting the electric quantity of the low-voltage storage battery of the full electric vehicle and the electric quantity of the power battery, the parameters of a mobile phone are analyzed and judged through the vehicle control unit, the effect of optimizing low-voltage charging for the electric vehicle is achieved, and thus the repeated charging of the low-voltage storage battery is avoided, the service life of the low-voltage storage battery is guaranteed, and the normal and safe traveling of the electric vehicle is guaranteed.
Description
technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a charging method for a low-voltage storage battery of a pure electric vehicle. Background technique [0002] With the rise of pure electric vehicles, the development of electric vehicles is an important way to improve energy security and develop a low-carbon economy. Pure electric vehicles are more electrified than traditional vehicles. Due to the particularity of electric vehicles, according to the state of the whole vehicle, the low-voltage electrical system of electric vehicles can be divided into two modes: operating state and charging state. And provide a certain current to charge the battery. How to avoid repeated charging of low-voltage batteries for pure electric vehicles is an important issue that needs to be considered by pure electric vehicles. Contents of the invention [0003] The purpose of the present invention is to provide a pure electric veh...
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IPC IPC(8): B60L11/18B60L1/00
CPCB60L1/00B60L58/10B60L2240/54Y02T10/70Y02T90/16
Inventor 唐继光陈维金唐丰欢文永强侯少阳昌宇程磊梁源
Owner 柳州延龙汽车有限公司