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Battery charging method

一种充电方法、电池电压的技术，应用在电池的充电领域，能够解决不能电池电压一致等问题，达到防止检测误差、正确检测电压上升的效果

Inactive Publication Date: 2005-06-15
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, since the voltage of the battery discharged through the discharge circuit is unified to a constant voltage, the voltage of the battery discharged without the discharge circuit is between the second set voltage and the first set voltage and is not unified. As a result, only The difference in the remaining maximum hysteresis, the disadvantage of not being able to make all battery voltages very balanced and consistent

Method used

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Examples

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Embodiment Construction

[0019] Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify the charging method for actualizing the technical idea of ​​the present invention, and the present invention does not specify the charging method as the following method.

[0020] In addition, in this specification, in order to facilitate understanding of the scope of the invention, the part numbers corresponding to those shown in the examples are appended to the parts shown in the "scope of the invention" and the "means to solve the problem column". However, components shown within the scope of the invention are by no means specified as components of the embodiment.

[0021] figure 2 A charging circuit including a voltage balancing circuit used in the charging method of the present invention is shown. The charging circuit including this voltage balancing circuit incorporates the assembled battery 15 . A charging circuit including ...

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Abstract

The present invention provides a battery charging method that makes the voltages of all batteries uniform and charges them while balancing them to an ideal state. The battery charging method is a charging method in which a plurality of secondary batteries (1) are connected in series and charged. The voltage of each battery is detected, the battery (1) exceeding the set voltage is discharged, and the battery (1) is charged while balancing the plurality of batteries. The charging method is as follows: detect the voltage of each battery (1) being charged, if the voltage of any one battery (1) exceeds the set voltage, then after charging for a set constant time, it will not exceed the set voltage The battery (1) discharges, only the battery (1) exceeding the set voltage is discharged until the battery voltage drops to the set voltage, and the voltage of each battery (1) is balanced while charging.

Description

technical field [0001] The present invention relates to a method of charging batteries connected in series, and more particularly to a method of charging while balancing the voltages of the batteries. Background technique [0002] An assembled battery having a plurality of batteries connected in series is used in various applications. In particular, this type of assembled battery is suitable for applications requiring high output because the output voltage can be increased by increasing the number of batteries connected in series. However, when a plurality of batteries are connected in series and charged, although the same current flows through all the batteries, an imbalance gradually occurs among the batteries. This is because the electrical characteristics of all batteries or the environment (such as fluctuations in temperature) during charging and discharging cannot be completely consistent. Batteries whose capacitance decreases when connected in series tend to be more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02H01M10/44H02H7/18H02J7/00
CPCH02J7/0016Y02E60/10H01M10/44H02J7/04
Inventor 山本洋由山口昌男玉井干隆
Owner SANYO ELECTRIC CO LTD
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