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Automatic charging method and system for starting battery of electric vehicle

A technology for starting batteries and automatic charging, which is applied in electric vehicles, secondary battery charging/discharging, battery circuit devices, etc. Effect

Inactive Publication Date: 2017-07-25
ZHIDOU ELECTRIC VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the technical problems that the starting battery of an electric vehicle is prone to power loss when the vehicle is in a long-term sleep state, which causes the vehicle to fail to start normally and affects the life of the starting battery, and provides an automatic charging method for the starting battery of an electric vehicle And the system, which can monitor the voltage of the starting battery when the electric vehicle is dormant, and charge it in time when the starting battery loses power, so as to ensure the normal starting of the vehicle and avoid the shortening of the life of the starting battery due to long-term power loss

Method used

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  • Automatic charging method and system for starting battery of electric vehicle

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Embodiment 1

[0023] Embodiment 1: a kind of electric vehicle starting battery automatic charging method of the present embodiment, such as figure 1 shown, including the following steps:

[0024] S1: The central processing unit starts the voltage detection module to detect the voltage of the starting battery according to the preset time interval until it detects that the voltage of the starting battery is less than or equal to the voltage lower limit value K1;

[0025] S2: When the voltage of the starting battery is less than or equal to the voltage lower limit value K1, the central processing unit judges that the starting battery is in a state of power loss, and starts the DC-DC converter to work, and the DC-DC converter converts the high-voltage power output by the power battery Charge the starter battery to the voltage required by the starter battery;

[0026] S3: In the process of charging the starting battery, when the voltage of the starting battery is greater than or equal to the up...

Embodiment 2

[0032] Embodiment 2: A method for automatically charging the starting battery of an electric vehicle in this embodiment includes the following steps:

[0033] S1: The central processing unit starts the voltage detection module to detect the voltage of the starting battery according to the preset time interval until it detects that the voltage of the starting battery is less than or equal to the voltage lower limit value K1;

[0034] S2: When the voltage of the starting battery is less than or equal to the voltage lower limit value K1, the central processing unit judges that the starting battery is in a state of power loss, and starts the DC-DC converter to work, and the DC-DC converter converts the high-voltage power output by the power battery Charge the starter battery to the voltage required by the starter battery;

[0035] S3: In the process of charging the starting battery, when the voltage of the starting battery is greater than or equal to the upper voltage limit K2, the ...

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Abstract

The invention discloses an automatic charging method and system for a starting battery of an electric vehicle. The automatic charging method comprises the steps of S1, detecting the voltage of the starting battery until the detected voltage of the starting battery is less than or equal to a voltage lower limiting value K1; S2, when the voltage of the starting battery is less than or equal to the voltage lower limiting value K1, judging whether the starting battery is in a power-lacking state or not, and starting a DC-DC converter to work to charge the starting battery; and S3, in the charging process of the starting battery, when the voltage of the starting battery is greater than or equal to a voltage upper limiting value K2, judging whether the starting battery stores enough electric energy or not, stopping the operation of the DC-DC converter, and enabling the DC-DC converter to stop the charging process for the starting battery. By adoption of the automatic charging method and system, the voltage of the starting battery can be monitored when the electric vehicle is in a sleeping state, and the starting battery can be charged in time when the starting battery is in the power-lacking state, so as to ensure normal start of the vehicle; and in addition, shortening of the service life caused by long-term power-lacking of the starting battery can be avoided.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method and system for automatically charging a starting battery of an electric vehicle. Background technique [0002] Now electric vehicles are becoming more and more intelligent, and electric vehicles are equipped with more intelligent electrical equipment. Some electrical equipment still has a large static power consumption when the vehicle is in a dormant state. The large static power consumption leads to the phenomenon of power loss in the starter battery of electric vehicles when the vehicle is in a long-term sleep state. The power loss voltage is lower than the normal starting voltage of the car, which leads to the failure of the car to start normally, which seriously affects the normal use of the customer. And frequent power loss will lead to irreversible damage to the starting battery, which will seriously shorten the life of the starting battery. Aiming at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00B60L11/18H01M10/44
CPCB60L58/12B60L58/14H01M10/4257H01M10/44H02J7/0069H02J7/342Y02E60/10Y02T10/70Y02T10/72
Inventor 王红梅鲍文光徐科闫优胜樊晓浒何志刚
Owner ZHIDOU ELECTRIC VEHICLE CO LTD