A control circuit for equalizing charging with solar panels
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A solar panel and balanced charging technology, applied in the direction of charge balancing circuit, battery circuit device, arrangement of multiple synchronous batteries, etc., can solve the problem of lack of control circuit
Active Publication Date: 2021-08-20
深圳市阿尓法智慧科技有限公司
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When charging in series, if the voltage of a single lithium battery reaches the overcharge protection voltage, the battery management system will cut off the entire series charging circuit and stop charging to prevent this single battery from being overcharged, which will cause other lithium batteries to overcharge. The battery cannot be fully charged, which makes it an urgent technical problem to solve the technical problem of power battery charging. At the same time, there is a lack of a complete control circuit for charging the battery pack through solar panels.
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[0033] It should be noted that the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present invention; and, for those of ordinary skill in the art, improvements can be made according to the above description Or transformation, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.
[0034] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the un...
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Abstract
The invention discloses a control circuit for balanced charging using solar panels, including a solar panel interface, a filter unit, a front voltage detection unit, a main step-down unit, a feedback unit, a current detection unit, a balanced charging unit, a battery pack interface and MCU, the solar panel interface, filter unit, main step-down unit, current detection unit, balanced charging unit and battery pack interface are electrically connected in sequence, and the front voltage detection unit is electrically connected to the input end of the main step-down unit , the feedback unit is electrically connected to the output end of the main step-down unit, and the pre-voltage detection unit, the main step-down unit, the feedback unit, the current detection unit, and the equalizing charging unit are all electrically connected to the MCU; the present invention It solves the problem of unbalanced charging of the power battery pack, and at the same time regulates the charging voltage very well, solves the problem of solar panels charging the power battery, and has good market application value.
Description
technical field [0001] The invention relates to the field of charging circuits, in particular to a control circuit for balanced charging using solar panels. Background technique [0002] At present, the charging of lithium battery packs generally adopts series charging, which is mainly because the series charging method has a simple structure, low cost, and is relatively easy to implement. However, due to the differences in capacity, internal resistance, attenuation characteristics, self-discharge and other performance between single lithium batteries, when charging lithium battery packs in series, the single lithium battery with the smallest capacity in the battery pack will be fully charged first. At this time, other batteries are not fully charged. If you continue to charge in series, the fully charged single lithium battery may be overcharged. [0003] However, overcharging of a lithium battery will seriously damage the performance of the battery, and may even cause an ...
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