Electric vehicle lead-acid battery pack protection module

A technology for protecting modules and battery packs, applied in the field of electric vehicles, can solve the problems of wrong charger use, easy failure of the protection system, battery failure, etc., and achieve the effect of preventing wrong use

Inactive Publication Date: 2020-03-27
ZHEJIANG JINKAI ELECTRONICS TECH 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 provide a kind of electric vehicle lead-acid battery group protection module, by connecting the protection module in series in the battery pack charging and anti-electricity circuit loop, setting single-chip microcomputer, charging protection unit and output protection unit; Incorrect use and failure of a single battery in the battery pack, the protection system is prone to failure and cannot provide protection.

Method used

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  • Electric vehicle lead-acid battery pack protection module
  • Electric vehicle lead-acid battery pack protection module
  • Electric vehicle lead-acid battery pack protection module

Examples

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Embodiment 1

[0034] The lead-acid battery protection module is connected to the battery pack, and the voltage detection unit inside the protection module detects the battery pack voltage to determine whether the battery pack voltage is within the nominal voltage range of the battery pack. If the voltage is not within the nominal voltage range of the battery pack, the module enters protection mode and stops system power output. If the voltage is within the nominal voltage range of the battery pack, start the battery initial power estimation algorithm to make a preliminary estimate of the battery power, and open the charging port when the power value is lower than 90% according to the estimated power value.

[0035] Battery charging protection: When the battery pack is connected to the charger, the current detection unit and the voltage detection unit detect the real-time charging voltage and current of the battery pack. Turn off to stop charging. If the charging voltage and charging curren...

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PUM

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Abstract

The invention discloses an electric vehicle lead-acid battery pack protection module, and relates to the technical field of electric vehicles. The system comprises a single-chip microcomputer used forelectric quantity monitoring, state analysis and monitoring. The current detection unit is used for detecting the charging current and the discharging current; the voltage detection unit is used fordetecting the charging voltage and the discharging voltage; the charging protection unit is used for realizing opening and closing of the charging circuit; and the output protection unit is used for opening and closing the battery pack output circuit. According to the invention, a protection module is connected in series in a battery pack charging and anti-electricity circuit loop, and a single-chip microcomputer, a charging protection unit and an output protection unit are arranged; the problems that an existing charger is used mistakenly, a single battery of a battery pack breaks down, a protection system is prone to failure, and a protection function cannot be provided are solved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, in particular to a protection module for lead-acid battery packs of electric vehicles. Background technique [0002] Most of the existing lead-acid battery protection systems and devices are installed at the charger side; when the charger fails, or the charger is used incorrectly, such as a 48V battery using a 60V charger, the battery protection system will fail; at the same time, the current Some lead-acid battery protection systems judge whether the lead-acid battery is overcharged according to the battery voltage and current. Collect the voltage and current that correctly reflect the actual state of the battery. This state will also cause the protection system to fail and cannot protect the battery pack. Contents of the invention [0003] The purpose of the present invention is to provide a kind of electric vehicle lead-acid battery group protection module, by connecting the prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L58/12
CPCB60L3/00B60L3/0046Y02T10/70
Inventor 姚宏方火军方进
Owner ZHEJIANG JINKAI ELECTRONICS TECH CO LTD
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