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Overheat protection method and circuit and mobile terminal

An overheating protection circuit and overheating protection technology, applied in emergency protection circuit devices, circuit devices, emergency protection devices with automatic disconnection, etc., can solve problems such as power consumption circuit failure, and achieve the effect of prolonging and ensuring the service life

Inactive Publication Date: 2016-09-21
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides an overheating protection method, circuit and mobile terminal to solve the problem that the power consumption circuit fails due to excessive temperature

Method used

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  • Overheat protection method and circuit and mobile terminal
  • Overheat protection method and circuit and mobile terminal
  • Overheat protection method and circuit and mobile terminal

Examples

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no. 1 example

[0028] According to still another aspect of the embodiments of the present invention, there is also provided an overheat protection method applied to a mobile terminal, the mobile terminal includes a battery, a power consumption circuit, and an overheat protection circuit; wherein, the overheat protection circuit includes: one end is connected to the battery and the other is connected to the overheat protection circuit. A switch circuit connected to the power consumption circuit at one end, and a sensor circuit for collecting the real-time temperature of the power consumption circuit; wherein, such as figure 1 As shown, the overheating protection method specifically includes the following steps:

[0029] Step 101: Obtain the real-time temperature of the power consumption circuit of the mobile terminal through the sensor circuit.

[0030] Specifically, the real-time temperature of the power consumption circuit of the mobile terminal can be collected in real time through a tempe...

no. 2 example

[0042] Such as image 3 As shown, the embodiment of the present invention provides an overheating protection circuit 100 applied to a mobile terminal 10 , and the mobile terminal 10 includes: a processor 101 , a power consumption circuit 102 and a battery 103 . Wherein, the overheat protection circuit 100 includes: a sensor circuit 1002 for collecting the real-time temperature of the power consumption circuit 102 and a switch circuit 1001 for controlling the on or off state of the power consumption circuit. Wherein, the control end of the switch circuit 1001 is connected to the processor 101 , the input end of the switch circuit 1001 is electrically connected to the battery 103 , and the output end of the switch circuit 1001 is electrically connected to the power consumption circuit 102 . Wherein, the sensor circuit 1002 is electrically connected with the processor 101 , and the sensor circuit 1002 is arranged near the power consumption circuit 102 , and can collect the temper...

no. 3 example

[0045] The first embodiment briefly introduces the overheat protection circuit 100 of the present invention, wherein the overheat protection circuit 100 includes: a switch circuit 1001 and a sensor circuit 1002 .

[0046] Wherein, the power consumption circuit 102 includes a power amplifier circuit, a power management circuit, etc. The power amplifier is used as an example for illustration below, but other types of power consumption circuits 102 are also applicable. Such as Figure 4 As shown, in addition to a processor 101, a power amplifier and a battery 103, the mobile terminal 10 also includes: a transceiver 104 connected between the processor 101 and the power amplifier, and a duplexer connected to the power amplifier and the transceiver 104 105, and the antenna 106 connected to the duplexer 105. in,

[0047] The processor 101 completes the control and signal processing of each module of the entire mobile terminal system.

[0048] The power amplifier completes the fina...

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Abstract

The invention discloses an overheat protection method and circuit and a mobile terminal. The mobile terminal comprises a processor, a power consumption circuit, the overheat protection circuit and a battery, wherein the overheat protection circuit comprises a switching circuit and a sensor circuit for collecting a real-time temperature of the power consumption circuit; and the overheat protection method comprises the steps of: obtaining the real-time temperature of the power consumption circuit of the mobile terminal through the sensor circuit; controlling on or off of the switching circuit according to the real-time temperature to control the working state of the power consumption circuit; obtaining on or off switching frequency of the switching circuit within a preset cycle; and when the switching frequency exceeds a preset threshold, generating alarm information of prompting a failure of the power consumption circuit. The overheat protection circuit disclosed by the invention can control the working state according to the real-time temperature of the power consumption circuit, and control the power consumption circuit to stop working when the temperature is over-high, so that the problem of a device failure caused by an over-high temperature is solved; and the service lifetime of the circuit is prolonged.

Description

technical field [0001] The invention relates to the field of intelligent terminals, in particular to an overheat protection method, circuit and mobile terminal. Background technique [0002] The internal circuit of the smart terminal is designed with multiple high-energy consumption circuits, such as power amplifier circuits, power management circuits, and the like. Among them, the function of the power amplifier in the field of wireless communication is to amplify the relatively small power radio signal output by the transceiver to a fixed value, and push it to the antenna system to complete the effective coverage of the radio signal in a specific area. The power amplifier takes DC energy from the battery and converts it into radio signal energy as efficiently as possible, with some of the energy dissipated as heat during the conversion process. This dissipated heat energy is not needed in actual use, and it will reduce the life of the device, or even cause the device to f...

Claims

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Application Information

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IPC IPC(8): H02H5/04
CPCH02H5/042
Inventor 孔根升
Owner VIVO MOBILE COMM CO LTD
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