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Load line loss compensation method and device for linear charging

A technology of line loss compensation and compensation method, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problem of long constant voltage charging time, increase the circuit scale and complexity, and avoid the constant voltage charging time being too long , the effect of reducing the charging time

Active Publication Date: 2021-11-19
SHENZHEN LOWPOWER SEMICON CO LTD
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  • Description
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Problems solved by technology

[0011] In view of the above technical problems, the present invention provides a load line loss compensation method and device for linear charging, in order to provide a technical solution to the problem of too long constant voltage charging time caused by load line loss

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  • Load line loss compensation method and device for linear charging
  • Load line loss compensation method and device for linear charging

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Embodiment Construction

[0032] Typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the invention is capable of various changes in different embodiments without departing from the scope of the invention, and that the description and illustrations therein are illustrative in nature and not limiting. this invention.

[0033] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] In the description of the present invention, ...

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Abstract

The invention discloses a load line loss compensation method and device for linear charging. The method comprises the following steps: charging a lithium battery; after the charging of the lithium battery enters a constant-voltage charging stage, monitoring a charging current; comparing the charging current with a preset line loss compensation starting threshold current, a preset line loss compensation turning threshold current and a charging termination threshold current: when the charging current is smaller than the line loss compensation starting threshold current, starting line loss compensation so as to increase the charging voltage; when the charging current is smaller than the line loss supplement turning threshold current, reducing the charging voltage; and when the charging current is smaller than the charging termination threshold current, stopping charging. The load line loss compensation method and device for linear charging can solve the problem of overlong constant-voltage charging time caused by load line loss.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to a load line loss compensation method and device for linear charging. Background technique [0002] Linear charging is a method of lithium battery charging control. It was the mainstream control method in the early stage of lithium battery technology development. The corresponding control chip products (representative products such as Linear Technology's LTC4054) have a wide range of application scenarios. The linear charging scheme has the advantages of simple peripheral circuits and low cost, but at the same time has the disadvantages of low efficiency and high thermal power consumption. Therefore, in the application scenarios of large-capacity and high-current charging, the switch charging scheme with higher efficiency replaces the linear charging scheme, but in the application of small-capacity and low-current charging, the linear charging scheme still occupies the mainstream...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00714H02J7/007186Y02E60/10
Inventor 冷悦聂丹
Owner SHENZHEN LOWPOWER SEMICON CO LTD
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