Method for detecting charging voltage of battery pack

Abstract

The invention discloses a method for detecting charging voltage of a battery pack. The method is used for calibrating a voltage display numerical value of a charger, and comprises the following steps: firstly, calculating a full-power reference digital quantity V1 converted by an AD module when the battery pack is in a full-voltage threshold Vbat state by an operation module; secondly, calculating a full-power reference analog quantity V2 corresponding to each full-power reference digital quantity by an operation module; then enabling the AD module to collect a voltage real-time digital quantity V3; and finally, enabling the operation module to calculate a real-time voltage coefficient value V4 of charging of the battery pack, and displaying the real-time voltage coefficient value V4 on the display screen. An existing controller algorithm structure is changed, the real-time digital quantity V3 converted by the AD module is further calibrated through an algorithm formula in the operation module and converted into the real-time voltage coefficient value V4, then the value is displayed on the display screen, the real-time voltage coefficient value V4 can reflect the charging electric quantity of a current battery pack more visually and clearly, the real-time voltage coefficient value V4 can also reflect the charging electric quantity of the current battery pack more visually and clearly, and the voltage value of the battery pack is amplified by 100 times, so that the voltage display precision is further improved.

Description

【Technical field】 [0001] The invention relates to the field of electronics, in particular to a method for detecting the charging voltage of a battery pack. 【Background technique】 [0002] In daily life, when the battery or battery pack or battery pack we use is exhausted, we need to use a charger to charge it. However, during the charging process of a general charger, there is no display on the charger housing, resulting in The user cannot know the current power of the battery pack; or there is a portable display on the charger shell, but because the circuit board in its own MCU controller lacks the voltage calibration function, the AD module converts the voltage analog value at the output of the voltage sampling circuit into After the digital quantity N1, directly compare it with the digital quantity N2 converted by the AD module when the battery pack is full of voltage to judge whether the battery pack is full. If the value of N1 is less than the value of N2, it means that...

AI Technical Summary

Problems solved by technology

[0002] In daily life, when the battery or battery pack or battery pack we use is exhausted, we need to use a charger to charge it. However, during the charging process of a general charger, there is no display on the charger housing, resulting in The user cannot know the current power of the battery pack; or there is a portable display on the charger shell, but because the circuit board in its own MCU controller lacks the voltage calibration function, the AD module converts the voltage analog value at the output of the voltage sampling circuit into After the digital quantity N1, directly compare it with the digital quantity N2 converted by the AD module when the battery pack is full of voltage to judge whether the battery pack is full. If the value of N1 is less than the value of N2, it means that the battery pack is not full, and the value of N1 is displayed on the display. If N1 is greater than or equal to the value of N2, it means that the battery pack is fully charged, and the N2 value and the word full of power are displayed on the display, but the values ​​​​N1 and N2 cannot intuitively and clearly reflect the real-time charging of the battery pack. The voltage value makes it impossible for the user to judge the power of the current battery pack

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