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Conversion circuit for series charging and parallel power supply

A technology for charging and converting circuits in series, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of unstable charging or discharging balance, affecting battery life, etc., and achieve the effect of improving charging or discharging balance.

Pending Publication Date: 2022-04-12
深圳市沃特沃德信息有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is to provide a conversion circuit for series charging and parallel power supply, aiming to solve the problem that the charging or discharging balance of the two batteries in the dual battery charging circuit in the prior art is unstable, resulting in affecting the battery life.

Method used

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  • Conversion circuit for series charging and parallel power supply
  • Conversion circuit for series charging and parallel power supply
  • Conversion circuit for series charging and parallel power supply

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Embodiment Construction

[0016] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. The expression "and / or" used herein includes all or any elements and all combinations of one or more associated listed items.

[0018] refer to figure 1 , the present application provides a conversion circuit for series charging and parallel power supply, including a conversion module 1 and a step-dow...

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Abstract

The invention discloses a conversion circuit for series charging and parallel power supply. The conversion circuit comprises a conversion module and a voltage reduction module, a battery charging input end of the conversion module is used for being connected with a battery power supply end of external power supply, a voltage input end of the conversion module is used for being connected with the battery power supply end of the external power supply, an output end of the conversion module is used for being connected with an input end of the voltage reduction module, and an output end of the voltage reduction module is connected with an external load. The conversion module is used for enabling an internal battery to automatically switch a series charging state or a parallel power supply state, and the voltage reduction module is used for carrying out voltage stabilization and direct connection on the output voltage of the conversion module and then outputting the output voltage to a load. And when the output voltages of the first battery and the second battery are not consistent, mutual charging is avoided, and the first switching unit and the second switching unit cut off the output of the battery with the lower output voltage, so that the charging and discharging voltages of the first battery and the second battery are consistent.

Description

technical field [0001] The invention relates to a charging conversion circuit, in particular to a conversion circuit for series charging and parallel power supply. Background technique [0002] There are many fast charging protocols used in the existing charging circuits on the market, but most of them increase the output voltage of the charger to increase the charging power. In order to improve the charging efficiency of the fast charging and reduce heat generation, the switching charging IC requires The voltage difference between the input and output is as small as possible. At the same time, in order to reduce the loss of various impedances in the charging circuit, the charging current is also required not to be too large. In order to solve the above problems, two batteries are generally charged in series and connected in parallel. The method of power supply, but this method may affect the charging or discharging balance of the two batteries during the series and parallel...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/00
Inventor 张立新
Owner 深圳市沃特沃德信息有限公司
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