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Safety management method of lithium iron phosphate battery

A lithium iron phosphate battery, safety management technology, applied in secondary batteries, secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve lithium battery loss, danger, increase lithium battery load and other problems

Active Publication Date: 2020-08-14
义乌易换骑电池有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the charging process of lithium batteries, the loss of lithium batteries and even dangerous situations will still occur due to various reasons, so the safety of lithium battery charging process is getting more and more attention and more and more important
[0003] At present, when charging lithium batteries, no matter what the situation is, they all implement a unified charging power and current, and do not make dynamic judgments based on the actual situation, thereby increasing the load on the lithium battery, resulting in low charging efficiency, high risk, and large waste of power. , and reduce the service life of the lithium battery

Method used

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  • Safety management method of lithium iron phosphate battery
  • Safety management method of lithium iron phosphate battery
  • Safety management method of lithium iron phosphate battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] A safety management method for a lithium iron phosphate battery, which collects various data of the battery to determine whether a single battery is in a stable state, wherein the data of the battery includes,

[0024] Acquisition of battery temperature and battery charging current, the battery temperature and battery charging current are set accordingly, when the battery temperature is less than or equal to 0°C, the battery charging current is equal to 0A, when the battery temperature is greater than 0°C and less than or equal to 45°C, The battery charging current is between 4A and 18A. When the battery temperature is greater than 45°C and less than or equal to 55°C, the battery charging current is between 10A and 4A. When the battery temperature is greater than 55°C, the battery charging current is 0A;

[0025] Collection of the first over-discharge protection voltage point, wherein the range of the first over-discharge protection voltage point is 2000mv-2500mv;

[00...

Embodiment 1

[0035] Table 1:

[0036]

[0037] It can be seen from the above Table 1 that the battery temperature is related to the charging current. When the temperature reaches 25<T≤40°C, the peak value of the charging current is 8A. If the battery temperature is higher than 40°C, the charging current will gradually realize reduce, so as to ensure the safety of the battery, and the first over-discharge protection voltage point, the second over-discharge protection voltage point, the maximum over-voltage protection voltage, and the over-voltage alarm voltage point are also a voltage point to ensure battery safety. Set two The over-discharge protection voltage point can prevent the battery in the battery cabinet from executing the protection mechanism after the over-voltage protection voltage point appears for the first time, ensuring that the battery in the battery cabinet can realize power supply and charging.

Embodiment 2

[0039] Table 2:

[0040]

[0041] It can be seen from the above Table 2 that the battery temperature is related to the charging current. When the temperature reaches 25<T≤45°C, the peak value of the charging current is 18A. If the battery temperature is higher than 45°C, the charging current will gradually realize reduce, so as to ensure the safety of the battery, and the first over-discharge protection voltage point, the second over-discharge protection voltage point, the maximum over-voltage protection voltage, and the over-voltage alarm voltage point are also a voltage point to ensure battery safety. Set two The over-discharge protection voltage point can prevent the battery in the battery cabinet from executing the protection mechanism after the over-voltage protection voltage point appears for the first time, ensuring that the battery in the battery cabinet can realize power supply and charging.

[0042] In the above-mentioned embodiment 2, the battery temperature and ...

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PUM

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Abstract

The invention relates to a safety management method of a lithium iron phosphate battery. The method comprises the following step of acquiring each data of the battery to judge whether a single batteryis in a stable state. The charging efficiency in the charging cabinet is higher, the charging is safer, the damage to the battery is smaller, the service life of the battery is longer, and, therefore, the purpose of reducing cost is achieved.

Description

technical field [0001] The invention belongs to the field of batteries, and in particular relates to a safety management method for lithium iron phosphate batteries. Background technique [0002] Lithium battery is currently the safest, environment-friendly and better performance battery, and lithium iron phosphate battery is the safest and most reliable among lithium batteries. However, during the charging process of lithium batteries, the loss of lithium batteries and even dangerous situations may occur due to various reasons. Therefore, the safety of lithium battery charging processes is getting more and more attention and is becoming more and more important. [0003] At present, when charging lithium batteries, no matter what the situation is, the unified charging power and current are all implemented, and no dynamic judgment is made according to the actual situation, thus increasing the load on the lithium battery, resulting in low charging efficiency, high risk, and la...

Claims

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Application Information

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IPC IPC(8): H01M10/44H01M10/48H01M10/42H01M10/0525
CPCH01M10/443H01M10/486H01M10/425H01M10/0525Y02E60/10
Inventor 孙卓
Owner 义乌易换骑电池有限公司