Shenzhen Hysincere Battery Co., Ltd
Shenzhen Hysincere Battery Co., Ltd

other news


Home >  other news > 

Consistency issues with lithium batteries.best solar powered generator

source:other news release time:2023-10-09 Hits:0     Popular:Lithium-ion battery wholesale

  

  Lithium batteries cannot be made into a large one, so we have to organize many small cells together, and everyone can work together with sincerity, even if we can take electric vehicles to fly. At this point, we need to face the issue of consistency.

  Our daily experience is that two dry batteries, with the positive and negative poles connected, can emit light from a flashlight. Who cares if they are consistent or inconsistent. The large-scale application of lithium batteries is not so simple.

  The inconsistency of lithium battery parameters mainly refers to the inconsistency of capacity, internal resistance, and open circuit voltage. Inconsistent battery cell strings used together can cause the following problems.

  1) Capacity loss refers to the formation of a battery pack consisting of individual cells, which conforms to the "barrel principle" in terms of capacity. The capacity of the worst cell determines the capacity of the entire battery pack.

  To prevent overcharging and discharging of the battery, the logic of the battery management system is set as follows: during discharge, when the lowest individual voltage reaches the discharge cut-off voltage, the entire battery pack stops discharging; When charging, stop charging when the highest unit voltage touches the charging cutoff voltage.

  Take two batteries connected in series as an example. One battery has a capacity of 1C, while the other has a capacity of only 0.9C. In a series connection, two batteries pass through the same amount of current.

  When charging, batteries with small capacity must first be fully charged, reaching the charging cut-off condition, and the system will no longer continue to charge. When discharging, batteries with small capacity will inevitably discharge all available energy first, and the system will immediately stop discharging.

  In this way, cells with small capacity are always fully charged and discharged, while cells with large capacity are always using a portion of their capacity. A portion of the entire battery pack's capacity is always idle

  2) Life loss, similarly, the lifespan of a battery pack is determined by the battery cell with the shortest lifespan. It is highly possible that the battery cell with the shortest lifespan is the one with a small capacity. Small capacity battery cells are always fully charged and discharged, with excessive output, which is likely to reach the key point of their lifespan first. As the lifespan of the battery cells comes to an end, a group of battery cells welded together will die with it.

  3) As the internal resistance increases, different internal resistances flow through the same current, and cells with high internal resistance generate relatively more heat. If the battery temperature is too high, it will accelerate the degradation rate and further increase the internal resistance. Internal resistance and temperature rise form a pair of negative feedback, accelerating the degradation of high internal resistance cells.


Read recommendations:

lithium deep cycle marine battery sales

12v 100ah lithium ion battery

Low Temperature Lithium Battery 26650 Cell

Unveiling Deep Cycle Battery Excellence: A Comparative Analysis of Duracell Ultra and Weize Technologies

How many lithium batteries can be divided into?

Share:

Last article:Understanding and Analysis of Energy Storage Lithium Battery Technology.portable solar power station

Next article:Why are most lithium-ion batteries small.best battery for solar panel

related suggestion

solar power storage manufacturer

2023-03-20

portable solar power station

2023-03-20

lithium power station Processing

2023-03-22

lifepo4 24v manufacturer

2023-04-07

lithium boat batteries Processing

2023-03-22

portable power station solar

2023-03-20

trolling motor battery

2023-05-08

best trolling motor battery

2023-05-08

24v lifepo4 battery

2023-05-08

lithium deep cycle marine battery

2023-05-08

portable solar power station

2023-05-08

solar energy storage

2023-05-08

Lithium Polymer Battery Pack for Smart Home Device

2023-02-14

Home Energy Storage Battery 51.2V 200Ah 10KWh Stackable Module

2023-04-10

Lithium Ion Battery 18650 Pack 10.8V 3000mAh

2025-04-10

51.2V 800Ah 600Ah 200Ah 100Ah Modular Stackable Rack Mount Energy Storage System

2023-02-21

LiFePo4 Battery Pack 12V 350Ah

2022-09-19

Choosing the Right 12 Volt Battery for Industrial and Commercial Applications

2025-03-14

Five methods to select high -quality lithium batteries.best deep cycle marine battery

2023-06-16

The advantages of 18650 cylindrical lithium battery

2022-10-12

The Future of Energy Storage: Key Trends and Market Insights for Businesses

2025-03-13

Choosing the Right 36V Battery Solution for Industrial and Commercial Applications

2025-03-14

Battery inspection processing.lithium marine batteries

2023-07-13

The difference between lead -acid batteries and lithium ion batteries.solar power battery storage

2023-06-05

Flexible packaging lithium battery

2022-11-11

What are the advantages of medical device lithium battery?

2023-02-25

Polymer lithium battery research cutting edge

2023-02-16