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Charge and discharge drive protection system for lithium battery

A driving protection, charging and discharging technology, applied in the direction of battery over-discharge protection, battery overcharge protection, battery over-current protection, etc., can solve the problems of battery performance damage, battery characteristic degradation, battery life shortening, etc., to achieve enhanced confidentiality, Effects of low power consumption and improved reliability

Active Publication Date: 2019-02-15
KINGCLEAN ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the chemical characteristics of lithium batteries, when the battery is over-discharged, the electrolyte will decompose and cause battery characteristics to deteriorate, and overcharging will shorten the battery life, severely damage the battery performance, and even explode.

Method used

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  • Charge and discharge drive protection system for lithium battery
  • Charge and discharge drive protection system for lithium battery
  • Charge and discharge drive protection system for lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figure 1-3 As shown, the program control module (MCU) 300 is respectively connected to a multi-channel charging MOS tube drive module 510, a general-purpose I / O module 540, a multi-channel discharge MOS tube drive module 520, and a battery power detection module 230 for controlling switches and gears. The switch key and the charge and discharge display module 550, the communication module 560 for communication, and the charge and discharge current detection module 250 for overcurrent protection.

[0033] The lithium battery charge and discharge drive protection system can be a further preference of the above-mentioned embodiment, the battery charge and discharge management module (AFE / DFE) 200 is integrated with a battery voltage detection module 210 and an equalizer for balancing the power of each single battery cell Module 220.

[0034] One end of the single-cell voltage detection module 210 is connected to the positive pole of the single-cell battery for re...

Embodiment 2

[0049] The difference from Embodiment 1 is that, as figure 2 As shown by the dotted circle in , the battery power detection module, short circuit detection module, current detection module and battery temperature monitoring module are set as independent modules outside the battery charge and discharge management module, the battery power detection module, short circuit detection module , the input terminals of the current detection module and the battery temperature monitoring module are connected to the lithium battery, and the output terminals of the battery power detection module, the short circuit detection module, the current detection module and the battery temperature monitoring module are connected to the program control module.

[0050]

[0051] Such as image 3 As shown, in combination with the above-mentioned implementation manners, specific examples of the present invention are given below.

[0052] The lithium battery charge and discharge drive protection syst...

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PUM

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Abstract

The invention discloses a charge and discharge drive protection system for a lithium battery. The charge and discharge drive protection system for the lithium battery comprises a chip synthesized by apower supply module, a program control module and a battery charge and discharge management module, wherein the program control module is connected with a charge and discharge current detection module, a short circuit detection module, a battery temperature monitoring module, a charge and discharge drive module and a plurality of external interfaces; and the battery charge and discharge management module is integrated with a voltage detection module and a balance module for balancing the quantity of stored electricity in each cell. The charge and discharge drive protection system for the lithium battery provided by the invention is an integrated chip system which is simple in peripheral circuit, perfect in protection function and low in power consumption, the reliability is improved, thefunction is strengthened, the system is of programmable control, the confidentiality is strengthened, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of charging protection, and more specifically, the invention relates to a lithium battery charging and discharging drive protection system. Background technique [0002] With the continuous development of vacuum cleaners, household appliances and garden tools, users' recognition of wireless products is getting higher and higher, so portable products are derived. Among them, lithium battery products are the future trend of battery development due to their excellent characteristics such as small size, high energy density, long cycle life, fast charge and discharge, long storage life, no memory effect, green environmental protection and low self-discharge rate. In recent years, more and more portable products, such as vacuum cleaners and garden tools, use lithium batteries as the main power source. [0003] Due to the chemical characteristics of lithium batteries, when the battery is over-discharged, the elect...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0021H02J7/0026H02J7/0014H02J7/00302H02J7/00304H02J7/00306
Inventor 倪祖根
Owner KINGCLEAN ELECTRIC
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