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Battery equalizing charging method and equalizing charger thereof

A battery equalization and charging method technology, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of reduced charging speed, non-compliance with battery charging standards, and high cost, and achieve the effect of improving performance consistency

Inactive Publication Date: 2014-03-12
HARBIN ZHIMU TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, the conventional battery pack charger generally uses a charger to charge the battery pack in series. Since the battery pack is composed of multiple single cells in series, there are inevitably individual differences between the single cells, and the way of series charging Although it is simple and fast, as the charging proceeds, some single cells must reach the highest charging voltage, while other single cells have not reached this voltage. If you continue to charge the battery pack, it will inevitably cause some single cells to charge. If the battery cells are overcharged, if the total voltage reaches the rated charging voltage, and some of the single cells have not reached the maximum charging voltage, the charger will stop working, which will inevitably lead to undercharging of individual single cells. Therefore, Individual cells in the battery pack are overcharged or undercharged for a long time, resulting in severe polarization of the individual cells, which affects the performance and service life of the battery pack
[0003] Recently, people have paid more and more attention to the research on the balanced charging of battery packs. The current balanced charging methods are divided into the following types. 1. When a battery cell in the battery pack reaches the highest charging voltage, a bypass current is started to flow through the battery pack. The current of a single cell is reduced, which reduces the charging speed and gradually synchronizes with other single cells. However, this method is expensive and has limited balancing capabilities. When the difference between the single cells in the battery pack is large, This method cannot be applied; 2. Change the connection mode of the single cells of the battery pack, change the single cells that are originally connected in series to a parallel connection through a switching device, and then charge them. It is theoretically feasible to switch to series mode, but the switching device is too complicated and bulky, and its application value is not great; 3. Firstly, the charger is used to charge the battery pack in series. After the highest charging voltage, stop the charger and switch to an independent charger to trickle charge each single cell. Since the charging current of the charger is generally large, the trickle charging current of the independent charger is very small. During the period, it will cause a great impact on the single battery cell, which does not meet the charging standard of the battery

Method used

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  • Battery equalizing charging method and equalizing charger thereof

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Embodiment

[0027] 1. Connect the equalizing charger to the single cell 1 (5-1) ~ single cell N (5-n) of the battery pack;

[0028] 2. Start the equalizing charger, and the power supply unit (2) provides the power required for the equipment to work;

[0029] 3. The controller unit (1) collects the voltage from the single cell 1 (5-1) to the single cell N (5-n) and displays it on the liquid crystal display module (3);

[0030] 4. Start the charging power supply 1 (4-1) ~ charging power supply N (4-n) corresponding to the single battery cell whose voltage is within the set range, and start the charging power supply 1 (5-1) ~ single battery cell N(5-n) for charging;

[0031] 5. The controller unit (1) performs timing. When the timing reaches the set time interval, it records the working status of the charging power source 1 (4-1) ~ charging power source N (4-n), and controls the charging power source 1 (4- 1) ~ Charging power supply N(4-n) stops working;

[0032] 6. The controller unit (1...

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Abstract

The invention relates to a battery equalizing charging method and an equalizing charger thereof. The provided battery equalizing charging method comprises the steps of adopting charging power supplies with the quantity same as that of monomer cells in a battery pack to charge the monomer cells, monitoring the charging process by intelligent control and performing equalized charging on the battery pack formed by the multiple monomer cells. Therefore, the integral charging saturation of the battery pack is improved and the voltage of each monomer cell is displayed by a display.

Description

technical field [0001] The invention relates to a battery equalization charging method and an equalization charger thereof, belonging to the field of battery testing. Background technique [0002] At present, the conventional battery pack charger generally uses a charger to charge the battery pack in series. Since the battery pack is composed of multiple single cells in series, there are inevitably individual differences between the single cells, and the way of series charging Although it is simple and fast, as the charging proceeds, some single cells must reach the highest charging voltage, while other single cells have not reached this voltage. If you continue to charge the battery pack, it will inevitably cause some single cells to charge. If the battery cells are overcharged, if the total voltage reaches the rated charging voltage, and some of the single cells have not reached the maximum charging voltage, the charger will stop working, which will inevitably lead to und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 李金录范金荣
Owner HARBIN ZHIMU TECH
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