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

News

HYSINCERE insist to navigate by high quality core cell and
highly qualified staffs in the vast sea so to the distance

Home >  News >  Industry News > 

Parallel equalization charging method for lithium battery packs.lithium golf cart batteries

source:Industry News release time:2023-10-10 Hits:0     Popular:Lithium-ion battery wholesale

  

  Common equalization charging technologies include constant shunt resistor equalization charging, on off shunt resistor equalization charging, average battery voltage equalization charging, switch capacitor equalization charging, buck converter equalization charging, inductor equalization charging, etc. When charging lithium batteries in series, it is necessary to ensure that each battery is evenly charged, otherwise the performance and lifespan of the entire battery group will be affected during use. However, the existing single lithium battery protection chips do not include equalization charging control function, and the equalization charging control function of multiple lithium battery protection chips requires an external CPU; By implementing serial communication with the protection chip (such as I2C bus), the complexity and design difficulty of the protection circuit are increased, the efficiency and reliability of the system are reduced, and power consumption is increased.

  This article focuses on the use of power lithium batteries in groups, and each lithium battery requires protection against charging overvoltage, discharging undervoltage, overcurrent, and short circuit. During the charging process, it is necessary to achieve balanced charging of the entire group of batteries. It introduces a design scheme of a battery protection board with balanced charging function that uses a single lithium battery protection chip to protect any number of series connected lithium batteries. The simulation results and industrial production applications have proven that the protection board has complete protection functions, stable operation, high cost-effectiveness, and balanced charging error less than 50mV.

  Principle and Structure of Balanced Charging for Lithium Battery Pack Protection Board

  1 is a single lithium-ion battery; 2 is the resistance of the charging overvoltage shunt discharge branch; 3 is a switching device for controlling the shunt discharge branch; 4 is the overcurrent detection protection resistance; 5 is the omitted lithium battery protection chip and circuit connection part; 6 is a single lithium battery protection chip (generally including charging control pin CO, discharge control pin DO, discharge overcurrent and short circuit detection pin VM, battery positive terminal VDD, battery negative terminal VSS, etc.); 7. The charging overvoltage protection signal is isolated by the optocoupler and forms a parallel relationship to drive the MOS gate for charging control in the main circuit; 8 is the MOS gate used for discharge control in the main circuit driven by a series relationship formed by the isolation of discharge undervoltage, overcurrent, and short circuit protection signals through optocoupler isolation; 9 is a charging control switch device; 10 is a discharge control switch device; 11 is the control circuit; 12 main circuit; 13 is a shunt discharge branch. The number of single lithium battery protection chips is determined based on the number of lithium battery packs, which are used in series to protect the charging and discharging, overcurrent, and short circuit states of the corresponding single lithium battery. This system not only provides charging protection, but also achieves balanced charging by controlling the on-off of the shunt discharge branch switch device through the protection chip. This scheme is different from the traditional approach of achieving balanced charging at the charger end and reduces the cost of designing and applying lithium battery chargers.


Read recommendations:

solar power battery storage Factory

solar generator kits

Explosion Proof 26650 Rechargeable Lithium Battery Cell

Evaluating Sodium-Ion Battery Price and Solutions for Home and Industrial Use

12V to 48V lead acid can replace modular batteries.deep cycle trolling motor battery

Share:

Last article:Lithium battery non graphite negative electrode.solar battery storage system

Next article:Comparison between lithium batteries and nickel hydrogen batteries

related suggestion

marine battery for trolling motor Factory

2023-04-07

lifepo4 battery 12v company

2023-04-07

solar power battery storage manufacturer

2023-03-20

solar power battery storage Vendor

2023-04-07

lithium ion golf cart batteries Manufacturing

2023-03-20

solar battery storage system Processing

2023-03-20

12v solar battery

2023-05-08

best marine battery

2023-05-08

best solar generator

2023-05-08

portable solar generator

2023-05-08

best solar generator for home

2023-05-08

lithium marine batteries

2023-05-08

HB-N1000 1000W Solar Portable Power Station with AC 100V-240V

2022-09-29

76.8V 105Ah Golf Cart LiFePo4 Battery Pack Waterproof Support CAN RS485 Bluetooth

2025-02-26

High Temperature Lithium Battery 18650 26650 Cell

2022-10-18

18650 21700 26650 10C 15C 20C Lithium Ion Battery Cell

2023-02-14

51.2V 65Ah LiFePo4 Battery Pack IP65 Waterproof for Golf Cart

2022-09-09

Unveiling the Power of the Samsung 30Q 18650 Battery

2025-03-21

Everything You Need to Know About 51.2V Lithium Batteries

2025-03-12

Exploring the Eco 36 Volt Lithium Battery: A Comprehensive Review

2025-03-17

Understanding the 18650 2000mAh Battery: Specifications and Applications

2025-03-19

How to Choose Home Energy Battery?

2022-12-14

What are the reasons for low voltage or zero voltage in lithium batteries?

2022-10-20

Disadvantages of lithium iron phosphate batteries

2023-02-08

Lithium ion power battery material project.deep cycle trolling motor battery maker

2023-04-25

Detailed explanation of lithium battery pack classification, application field and production process

2022-11-25

Differences in charging methods between lithium battery and nickel hydrogen battery.solar energy storage batteries direct sales

2023-04-13