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Battery temperature sensing system and method thereof

A battery temperature and battery technology, applied in thermometers, thermometers using directly heat-sensitive electric/magnetic elements, measuring devices, etc., can solve the problem of inability to accurately obtain battery temperature, current cannot be maintained, and inability to accurately obtain thermal sensitivity Resistor voltage and other issues

Inactive Publication Date: 2009-12-23
SHENZHEN FUTAIHONG PRECISION IND CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, the sent current usually cannot be maintained at a certain value, so that the voltage of the thermistor cannot be accurately obtained and the temperature of the battery cannot be accurately obtained

Method used

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  • Battery temperature sensing system and method thereof
  • Battery temperature sensing system and method thereof
  • Battery temperature sensing system and method thereof

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Embodiment Construction

[0013] refer to figure 1 Shown is an application environment diagram of a preferred embodiment of the battery temperature detection system of the present invention. The battery temperature detection system 110 is fixed in the integrated circuit (Integrated Circuit, IC) chip 11 of the handheld electronic device 1 , and is used for detecting the temperature of the battery 2 of the handheld electronic device 1 . The handheld electronic device 1 can be a mobile phone or other electronic communication devices. In this embodiment, the handheld electronic device 1 is a mobile phone, which is connected to a battery 2 .

[0014] The handheld electronic device 1 includes an IC chip 11, a storage unit 12, a display screen 13 and a current limiting resistor R1. The IC chip 11 is used to output a current I to the voltage U obtained from the thermistor R2 of the battery 2 to determine the temperature of the battery 2 . The storage unit 12 is used for storing a temperature comparison tabl...

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Abstract

The invention relates to a battery temperature sensing system which is applied to an integrated circuit chip of a handheld electronic device and is used for setting ranges of standard current value and temperature critical value of a battery, obtaining a voltage value output by a current-limiting resistor, computing a current value output by the integrated circuit chip, computing a correction parameter of correction voltage according to the set standard current and the current value output by the integrated circuit chip, computing the correction voltage value of a thermistor of the battery according to the correction parameter and the voltage value output by the current-limiting resistor, reading the battery temperature from a temperature mapping table of a storage unit according to the correction voltage value, judging whether the batter temperature exceeds the set temperature critical value range or not, and warning whether the battery can be charged or not at the temperature. The invention also provides a battery temperature sensing method. The invention can accurately sense the battery temperature of the handheld electronic device.

Description

technical field [0001] The invention relates to batteries of handheld electronic devices, in particular to a battery temperature detection system and method. Background technique [0002] Today, with the rapid development of the information industry, handheld electronic devices (such as mobile phones) have become widely used communication tools in people's daily life. The quality of the battery as a supporting product directly affects the standby and talk time of the mobile phone, and if there is a problem with the safety performance, it will directly affect the safety of people and property. Therefore, mobile phone power management is becoming more and more important, and some ASIC (Integrated Circuit, IC) chips of mobile phone power management systems have been applied in mobile phone battery management. However, the current mobile phone cannot charge the battery of the mobile phone when the temperature of the battery is abnormal (generally above 50°C or below 10°C). [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/25
Inventor 李宜霖李易霖李尚颖
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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