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Charging method and charging system

A charging method and charging current technology, applied in secondary battery charging/discharging, battery circuit devices, collectors, etc., can solve the problem of large switching loss and achieve the effect of reducing switching loss

Active Publication Date: 2014-10-08
SMART IP INFORMATION SERVICE SHENZHEN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, the existing charging mode, whether it is switch charging or linear charging, has the problem of large switching loss in the constant voltage charging stage.

Method used

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  • Charging method and charging system
  • Charging method and charging system
  • Charging method and charging system

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Embodiment Construction

[0030] Certain terms are used throughout the description and claims to refer to particular components. It should be understood by those skilled in the art that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 4 It is a structural schematic diagram of the charging system of the embodiment of the present invention. like Figure 4 As shown, the charging system includes a charger 10 and a device 20 to be charged. Wherein, the charger 10 includes a transformer module 11, a feedback module 12, a feedback control module 13, a transformer control module 14 and a first interface 15, and the device 20 to be charged includes a second interface 21, a chargin...

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Abstract

The invention discloses a charging method and a charging system. The charging method comprises the steps that whether a battery enters a constant-voltage charging stage is judged according to the voltage value of the battery; if the battery enters the constant-voltage charging stage, the output current-limiting value of a charger is obtained; the value of charging current is set to be larger than the output current-limiting value of the charger, and the battery is charged in a constant-current mode according to the output current-limiting value of the charger; whether the value of voltage of the battery charged in the constant-current mode reaches a cut-off voltage value is judged; if the value of the voltage of the battery charged in the constant-current mode reaches the cut-of voltage value, whether the battery is fully charged is judged; if the battery is not fully charged, the output current-limiting value of the charger is reduced according to a preset rule, and the battery is charged in the constant-current mode according to the output current-limiting value of the charger. By the adoption of the charging method and the charging system, the switching loss in the constant-voltage charging stage can be greatly reduced.

Description

technical field [0001] The invention relates to the charging field, in particular to a charging method and a charging system. Background technique [0002] Generally speaking, battery charging modes include switch charging and linear charging. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of an existing switching charging circuit. like figure 1 As shown, according to the principle of the switch charging circuit: Among them, U 0 The output voltage of the switching charging circuit, that is, the voltage of the battery, U in It is the input voltage of the switch charging circuit, that is, the output voltage of the charger, and D is the switch tube V T The ratio of on-time to period, that is, the duty cycle of the control signal. [0004] Please also refer to figure 2 , figure 2 Yes figure 1 The graph of the voltage and current of the battery during the charging process of the switching charging circuit shown. from figure 2 It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 李城铭倪漫利
Owner SMART IP INFORMATION SERVICE SHENZHEN LTD