Debugging device, circuit and method for battery charging over-temperature protection

A technology for over-temperature protection and battery charging, applied in measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as unfavorable project progress, waste of manpower and material resources, complicated operations, etc., to speed up project progress, reduce debugging time, and simplify The effect of complicated steps

Active Publication Date: 2019-12-17
广东电邦新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, some items in the mobile phone battery debugging process are relatively cumbersome: the external resistor needs to be replaced manually by technicians, and the external resistor needs to be frequently soldered and removed on the motherboard; complex
In addition, the resistance value of the resistor is not easy to control during the debugging process, and it is difficult to find a balance point
Therefore, the debugging time of the existing technology is long, which is not conducive to the progress of the project, and the scrapping rate of the motherboard may be increased during the debugging process, which can be said to be a waste of manpower and material resources

Method used

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  • Debugging device, circuit and method for battery charging over-temperature protection
  • Debugging device, circuit and method for battery charging over-temperature protection
  • Debugging device, circuit and method for battery charging over-temperature protection

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Embodiment Construction

[0047] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0048] The debugging device for battery charging over-temperature protection described in the present invention (hereinafter referred to as the debugging device) is suitable for battery over-temperature protection circuits of mobile phones or other devices.

[0049] Such as figure 1 As shown, the battery overtemperature protection circuit includes: a voltage divider module 20 , an ADC sampling module 30 , a voltage comparison module 40 , and a switch protection module 50 . Wherein, the voltage divider module 20 includes the NTC resistor 11 inside the battery 10, and an external resistor connected in series with the NTC resistor 11; the ADC sampling module 30, whose circuit is connected to the voltage divider module 20, is connected to the NTC resistor 11 and / or the external resistor The voltage obtained by the voltage division is sampled to obtain ...

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Abstract

The invention relates to a debugging device, circuit and method for over-temperature protection during battery charging. A first rheostat and a second rheostat in the debugging device are connected with an NTC resistor in a battery in series; a partial pressure signal output by the debugging device is compared with a reference voltage by a first comparator and a second comparator to diagnose whether the debugging partial pressure signal is in the voltage range limited by a first reference voltage and a second reference voltage or not to confirm whether the temperature of the battery is in the temperature protection range limited by a first threshold value and a second threshold value or not. According to the invention, complex steps can be simplified; the debugging time is shortened; the project progress is effectively accelerated.

Description

technical field [0001] The invention relates to the field of battery control, in particular to a debugging device, circuit and method for battery charging overtemperature protection. Background technique [0002] In the process of mobile phone design, battery protection is very important, such as battery charging current setting, battery temperature protection, battery over-discharge protection, etc. This is not only a protection for the battery, but also a protection for the safety of mobile phone users. [0003] The current battery over-temperature protection circuit mainly includes a voltage divider module, an ADC (analog-to-digital conversion) sampling module, a voltage comparison module, and a switch protection module. The NTC (negative temperature coefficient) resistor inside the battery and the external resistor form a voltage divider module. The voltage divided by the NTC resistor is sampled by the ADC sampling module, and then compared with the internal voltage com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 朱洁
Owner 广东电邦新能源科技有限公司
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