Temperature change detection method for environment of battery and temperature change detection device thereof

Abstract

The invention discloses a temperature change detection method for the environment of a battery and a temperature change detection device thereof. The temperature change detection method comprises the steps that A. battery temperature is acquired in real time and the battery temperature charge rate is calculated; and B. when the battery temperature charge rate is judged to be greater than a threshold, a preset temperature corresponding matrix is inquired according to the current battery temperature and the battery temperature charge rate and the current environment temperature is acquired so that the accurate environment temperature can be immediately acquired when the environment temperature jumps or sharply changes, and the problems that an existing mobile terminal adopts a temperature-sensitive resistor to detect temperature and the change of the resistance value of the temperature-sensitive resistor is slow and cannot be timely detected can be solved.

Description

technical field [0001] The present invention relates to the field of battery technology, in particular to a method and device for detecting temperature changes in the environment where the battery is located. Background technique [0002] Battery temperature is an important parameter of the battery. In the existing technology, the mobile terminal detects the battery temperature in real time, and once the temperature is found to exceed the normal range, it will take protection (usually shut down) to avoid extreme temperatures (overheating or overcooling) Damage to the battery caused by the use of the mobile terminal. [0003] In the existing technology, such as figure 1 As shown, a battery temperature pin T is set on the battery; inside the battery, a thermistor Rb is connected in series between the battery temperature pin T and the battery negative terminal B-. The resistance of the thermistor Rb will change with the temperature change of the environment where the mobile t...

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Problems solved by technology

[0023] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a method and device for detecting temperature changes in the environment where the battery is located, so as to solve the problem of when the ambient temperature jumps or changes drastically when the existing battery temperature is detected. , due to the slow change of the resistance of the thermistor, the problem that it cannot be detected in time

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