Charge control method for photovoltaic power generation system

A technology of photovoltaic power generation system and charging control method, which is applied in the direction of battery circuit devices, current collectors, electric vehicles, etc., can solve problems such as difficulty in meeting the normal charging of battery packs, affecting normal power supply of batteries, and failure of loads to work normally, so as to improve charging efficiency. efficiency effect

Inactive Publication Date: 2014-02-26
青岛锐晶光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the charging terminal voltage output by the solar panel is insufficient, it will be difficult to meet the normal charging of the battery pack, which will affect the normal power supply of the battery to the load, resulting in the load not working normally

Method used

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  • Charge control method for photovoltaic power generation system
  • Charge control method for photovoltaic power generation system
  • Charge control method for photovoltaic power generation system

Examples

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Embodiment Construction

[0017] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] figure 1 Shown is a flowchart of an embodiment of the charging control method for the photovoltaic power generation system of the present invention.

[0019] In this embodiment, the photovoltaic power generation system includes solar panels, storage batteries and a control system. The storage batteries include several parallel branches, and each parallel branch includes multiple storage batteries connected in series. An output terminal is connected to each parallel branch. Moreover, a plurality of controllable switches are arranged in the storage battery pack, and the plurality of storage batteries are connected in series and in parallel through the controllable switches.

[0020] Such as figure 1 As shown, the charging control process of the photovoltaic power generation system with the above stru...

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PUM

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Abstract

The invention discloses a charge control method for a photovoltaic power generation system. The photovoltaic power generation system comprises a solar cell panel and a storage battery pack, the storage battery pack comprises a plurality of storage batteries, a plurality of controllable switches are arranged in the storage battery pack, and when a charge voltage value output by the solar cell panel is a normal charge voltage value, the on-off state of the controllable switches is controlled to enable the storage batteries in the storage battery pack to be in a discharge connecting state. When the charge voltage value output by the solar cell panel is a weak charge voltage value, the on-off state of the controllable switches is controlled, the number of the storage batteries connected in each parallel branch in series is reduced until the number is matched with the weak charge voltage value, and the reduced storage batteries form new parallel branches. According to the charge control method, the number of the storage batteries connected in the chargeable storage battery pack in series is adjusted according to the different charge voltage values output by the solar cell panel in the charging process, and the normal charging and use of the storage battery pack are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a charging control method for a photovoltaic power generation system. Background technique [0002] Photovoltaic power generation refers to a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. Theoretically speaking, photovoltaic power generation technology can be used in any occasion that needs power, from spacecraft to household power. The photovoltaic power generation system includes solar panels, battery packs, charge and discharge controllers and loads. The solar panel is an energy conversion component, which is used to absorb light energy and convert light energy into electrical energy; the battery pack generally includes multiple parallel branches, and each parallel branch is formed by connecting multiple batteries in series. Each parallel branch is charg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 姜德志陈海军
Owner 青岛锐晶光电科技有限公司
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