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Charging method and device

A charging method and technology of a charging device, which are applied to circuit devices, battery circuit devices, and secondary battery charging/discharging, etc., can solve the problems of slow charging speed and reduced charging speed.

Inactive Publication Date: 2018-12-14
NINGDE AMPEREX TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] Step-by-step constant current and constant voltage charging can increase the initial charging speed of lithium batteries, but with the increase of battery storage capacity, it is necessary to reduce the constant current charging current step by step to prevent the risk of lithium analysis, but doing so will slow down the charging speed. Gradually decrease, resulting in a slower overall charging speed for step-by-step constant current and constant voltage charging

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Embodiment Construction

[0030] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should be understood that although the...

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Abstract

The embodiment of the invention provides a charging method and a device, which relate to the technical field of batteries, and charge the batteries by combining two ways of step-by-step constant current and constant voltage charging and pulse charging, so as to realize fast charging and reduce the lithium evolution risk of the batteries. The charging method comprises a step-by-step stage and a pulse stage. The step-by-pulse stage comprises the following steps: performing at least one constant current and constant voltage charging cycle in the step-by-step stage; In the step-by-step phase, whenthe state parameter of the battery reaches the limit condition of lithium evolution, the device enters into the pulse phase. The technical proposal provided by the embodiment of the invention is applicable to the battery charging process.

Description

【Technical field】 [0001] The invention relates to the technical field of batteries, in particular to a charging method and device. 【Background technique】 [0002] With the advancement of modern technology, mobile electronic products have developed rapidly. As the core component of mobile electronic products, batteries have also made great progress, and one of the main development directions is faster charging speed. [0003] Currently, a commonly used charging method is a constant current and constant voltage charging mode. The first stage of constant current and constant voltage charging is charged with a constant current; when the voltage reaches a predetermined value, it is transferred to the second stage of constant voltage charging, at which time the current gradually decreases; when the charging current drops to zero, the battery is fully charged, which is currently The most common charging method for lithium batteries. In order to increase the charging speed, the w...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H02J7/007Y02E60/10
Inventor 党琦郑强方占召袁庆丰
Owner NINGDE AMPEREX TECH
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