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Lithium battery voltage detection method and device, electrical equipment and storage medium

A detection method and lithium battery technology, applied in measuring devices, measuring current/voltage, and only measuring voltage, etc., can solve problems such as inability to stop work in time, unfavorable lithium battery protection, and inability to detect battery voltage, so as to prolong the service life , to facilitate the effect of timely protection

Active Publication Date: 2021-04-02
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the detection timing of the battery voltage is wrong, the lowest battery voltage may not be detected, resulting in failure to stop working in time, which is not conducive to the protection of lithium batteries

Method used

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  • Lithium battery voltage detection method and device, electrical equipment and storage medium
  • Lithium battery voltage detection method and device, electrical equipment and storage medium
  • Lithium battery voltage detection method and device, electrical equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 of the present invention provides a method for detecting the voltage of a lithium battery. figure 1 It is a schematic flow chart of the lithium battery voltage detection method in Example 1 of the present invention. Such as figure 1 As shown, the lithium battery voltage detection method of Embodiment 1 of the present invention includes the following steps:

[0035] S101: When the load is controlled by a pulse signal, acquire state information of the pulse signal at a current moment.

[0036] In Embodiment 1 of the present invention, the control mode of the pulse signal includes PWM control and duty ratio control. Among them, PWM control refers to pulse width modulation, which is a short-period signal, and the cycle time is generally within milliseconds; duty cycle control refers to a long-period signal, and the cycle time is generally in seconds. For example, the status information of the pulse signal can be understood as whether the pulse signal is at a...

Embodiment 2

[0054] Corresponding to Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a lithium battery voltage detection device. image 3 It is a schematic structural diagram of a lithium battery voltage detection device in Example 2 of the present invention. Such as image 3 As shown, the lithium battery voltage detection device according to Embodiment 2 of the present invention includes an acquisition module 20 , a processing module 22 and a sampling module 24 .

[0055] Specifically, the acquiring module 20 is configured to acquire the status information of the pulse signal at the current moment when the load is controlled by the pulse signal.

[0056] The processing module 22 is configured to determine whether the pulse signal is a valid pulse width according to the status information.

[0057] The sampling module 24 is used to determine the voltage sampling time when the pulse signal is an effective pulse width, and detect the voltage of the lit...

Embodiment 3

[0060] An embodiment of the present invention also provides an electrical device, which may include a lithium battery, a processor, and a memory, wherein the processor and the memory may be connected through a bus or in other ways.

[0061] Specifically, the electrical equipment includes a lithium battery power supply module, a load module, a PWM output control module, a PWM signal detection module, a battery voltage detection module, and the like.

[0062] The processor may be a central processing unit (Central Processing Unit, CPU). The processor can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate array (Field-Programmable Gate Array, FPGA) or other Chips such as programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above-mentioned types of c...

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PUM

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Abstract

The invention discloses a lithium battery voltage detection method and device, electrical equipment and a storage medium. The lithium battery voltage detection method comprises the steps of obtainingthe state information of a pulse signal at a current moment when a load is controlled by the pulse signal, determining whether the pulse signal is an effective pulse width or not according to the state information, and when the pulse signal is the effective pulse width, determining a voltage sampling moment, and detecting the voltage of the lithium battery when the voltage sampling moment is reached to obtain an on-load voltage. Therefore, the lowest voltage of the lithium battery can be accurately detected, timely protection is facilitated, and the service life of the lithium battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a lithium battery voltage detection method, device, electrical equipment and storage medium. Background technique [0002] At present, lithium batteries are increasingly used in household products, including hand-held juicer cups, hand-held dental flossers, and hand-held fans. Such products generally work by controlling the load of the DC motor, and output different duty cycle pulse widths through PWM to adjust different gears to meet the needs of users. [0003] Lithium batteries have a minimum discharge voltage requirement, lower than this minimum discharge voltage may cause damage to the lithium battery, so it is required to accurately detect the battery voltage for timely protection. Because the motor load works during the effective PWM pulse width, the battery voltage will be pulled down, and the motor load does not work during the PWM invalid pulse width, and ...

Claims

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Application Information

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IPC IPC(8): G01R31/385G01R19/00
CPCG01R31/386G01R19/0084
Inventor 李硕勇龚辉平陈定武朱永哲张迎香冯晓琴
Owner GREE ELECTRIC APPLIANCES INC