Trickle charging circuit, charger and electronic device

A technology of trickle charging and current control circuit, which is applied to battery circuit devices, current collectors, circuit devices, etc., can solve problems such as shortening battery life and safety accidents, and achieve the goals of improving user experience, reducing weight, and reducing circuit wiring area Effect

Active Publication Date: 2020-03-24
GOERTEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the voltage is low, the battery life will be shortened if a large

Method used

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  • Trickle charging circuit, charger and electronic device
  • Trickle charging circuit, charger and electronic device
  • Trickle charging circuit, charger and electronic device

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Embodiment Construction

[0030] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part 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] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positi...

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PUM

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Abstract

The invention relates to the technical field of trickle charging, in particular to a trickle charging circuit, a charger and an electronic device. The circuit comprises a trickle current control circuit, a path management circuit, a voltage detection circuit and a charging management chip. The voltage detection circuit is used for detecting an input power supply voltage and sending a power supplyvoltage value to the path management circuit. The path management circuit is used for receiving the power supply voltage value, comparing the power supply voltage value with the battery voltage valueof the to-be-charged battery, and closing an access between the charging management chip and the power supply end when the battery voltage value is smaller than the power supply voltage value. The trickle current control circuit is used for carrying out trickle charging on the battery to be charged when an access between the charging management chip and the power supply end is closed. When the voltage of the battery is too low, the current charging mode can be converted into a trickle charging mode so as to prevent the battery from being damaged due to the fact that large current is poured into a low-voltage battery, the charging efficiency is improved, and the to-be-charged battery is protected.

Description

technical field [0001] The invention relates to the technical field of trickle charging, in particular to a trickle charging circuit, a charger and electronic equipment. Background technique [0002] Smart wearable electronic products occupy a pivotal position in the current consumer electronics market. With the intensification of market competition, integrating more functions in a smaller volume has become a research hotspot. The reduction in the size of smart wearable products will inevitably affect the battery capacity; the battery voltage of a small-capacity battery is low. In order to ensure battery safety, it is not appropriate to use a large current to charge a low-voltage small battery. [0003] When the voltage is low, a large current pouring into the battery will shorten the life of the battery, and may cause serious safety accidents. At present, some charging management chips on the market do not support trickle charging or the trickle charging current is too lar...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0029Y02B40/00
Inventor 白兴旺赵平强孔苓青
Owner GOERTEK INC
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