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A mobile terminal charging temperature protection method and device

A technology for mobile terminals and chargers, applied in emergency protection circuit devices, circuit devices, battery circuit devices, etc., can solve problems such as burning and melting, and achieve the effect of protection from damage

Active Publication Date: 2019-11-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and device for protecting the charging temperature of a mobile terminal, so as to solve the safety problem that the connector of the output terminal of the charger will be melted after a micro-short circuit occurs when the mobile phone is charging.

Method used

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  • A mobile terminal charging temperature protection method and device
  • A mobile terminal charging temperature protection method and device
  • A mobile terminal charging temperature protection method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The inventor of the present application proposes a method for protecting the charging temperature of a mobile terminal, which includes the following operations:

[0034] The thermistor temperature sensor installed on the head of the mobile terminal charger connector detects the heat of the connector head in real time;

[0035] When the thermistor temperature sensor detects that the temperature of the connector head rises, the resistance value of the resistor in the thermistor temperature sensor changes as the temperature rises, and the resistor whose resistance value changes makes the charger loop resistance satisfy When the charger protection condition, shut down or reduce the output power of the charger.

[0036] Wherein, the thermistor temperature sensor can be implemented by connecting PTC resistors in series, incorporating NTC resistors, or combining PTC resistors in series and NTC resistors at the same time.

[0037] The charger protection conditions include at l...

Embodiment 2

[0047] This embodiment introduces a mobile terminal charging temperature protection device, which includes the following two parts.

[0048] The thermistor temperature sensor installed on the head of the connector of the mobile terminal charger detects the heat of the connector head in real time;

[0049] Wherein, the thermistor temperature sensor can be realized by connecting PTC resistors in series, NTC resistors, or PTC resistors in series and NTC resistors at the same time.

[0050] The processing unit, when the thermistor temperature sensor detects that the temperature of the connector head rises, judges that the resistance value of the resistor in the thermistor temperature sensor changes so that the charger circuit resistance meets the charger protection condition, shuts down or reduces The output power of the charger.

[0051] The above-mentioned charger protection conditions include at least the following two types, but are not limited to these two types:

[0052] T...

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PUM

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Abstract

The invention discloses a charging temperature protection method and device for a mobile terminal, and relates to the field of mobile terminals with battery charging such as mobile phones and data cards. The method disclosed in the present invention includes: a thermistor temperature sensor installed on the connector head of the mobile terminal charger detects the heat of the connector head in real time; when the thermistor temperature sensor detects that the temperature of the connector head rises, , the resistance value of the resistor in the thermistor temperature sensor changes as the temperature rises, and the resistor whose resistance value changes makes the charger loop resistance meet the charger protection condition, shutting down or reducing the output power of the charger. The invention also discloses a mobile terminal charging temperature protection device. The technical solution of the present application protects the charger or the head of the data line from being damaged.

Description

technical field [0001] The invention relates to the field of battery-charging mobile terminals such as mobile phones and data cards, and in particular to a method and device for protecting the charging temperature of a mobile terminal. Background technique [0002] With the development of mobile terminal technology, more and more functions are required by users, the screen size is getting larger and larger, and the battery capacity requirements of the terminal are also increasing. Therefore, the power of the charger required to charge the mobile phone is increasing. During the charging process of this kind of high current, many end users have encountered safety problems that the connector of the charger output terminal will be burned after a micro-short circuit occurs when the mobile phone is charging, especially the Micro USB connector that is currently recommended globally. Due to the structural size limitation, during the user's use, foreign objects enter, the plug and so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/18
CPCH02J7/007192
Inventor 梁锡林
Owner ZTE CORP