A multifunctional display circuit for a level meter and a power tool battery pack

Abstract

The utility model discloses a multifunctional display circuit for a level meter and a power tool battery pack, including a battery protection module and an LED control module, wherein the battery protection module includes B‑, B+, R2, C8 and U1, wherein the output end of B+ is connected to R2, the output end of R2 is connected to the VDD of U1, the VM end of U1 is connected to GND, the output end of B‑ is connected to the GND of U1, and C8 is connected between B‑ and R2; the LED control module includes U2 and LED1, wherein pin 1 of U2 is connected to B+, pins 9, 10, 13 and 14 of U2 are connected to LED1, and pins 11 and 12 of U2 are respectively the charging end and the discharging end. The utility model controls the display of multi-color LED lamp beads through program writing, realizes color change through DO / IO control port, controls the brightness of color through high / low level port, and controls the duty cycle through PWM pulse port to achieve a breathing display effect.

Description

Technical Field

[0001] The utility model belongs to the field of multifunctional display of a level meter and a battery pack of an electric tool, and in particular relates to a multifunctional display circuit of a level meter and a battery pack of an electric tool. Background Art

[0002] A level is a commonly used measuring tool for measuring small angles. It is used to measure the inclination angle relative to the horizontal position, the flatness and straightness of the guide rails of machine tools, the horizontal and vertical positions of equipment installations, etc. A power tool is a tool that uses an electric motor or electromagnet as a power source and drives a working head through a transmission mechanism to perform operations. Currently, the charging instruments for the levels and power tool battery packs on the market do not allow people to observe the battery charge directly during charging, and it is also difficult to observe when the battery is fully charged. Most people assume that it only takes a few hours to charge the battery, but this often results in a high degree of battery damage, and the battery is made of difficult-to-degrade materials, which can cause damage to the environment. Utility Model Content

[0003] The purpose of the utility model is to provide a level meter and a multifunctional display circuit for a power tool battery pack, aiming to solve the problems existing in the above-mentioned background technology. To achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0004] A multifunctional display circuit for a level meter and an electric tool battery pack, comprising a battery protection module and an LED control module, wherein the battery protection module comprises B-, B+, R2, C8 and U1, wherein the output end of B+ is connected to R2, the output end of R2 is connected to the VDD of U1, the VM end of U1 is connected to GND, the output end of B- is connected to the GND of U1, and C8 is connected between B- and R2;

[0005] The LED control module includes U2 and LED1, pin 1 of U2 is connected to B+, pins 9, 10, 13 and 14 of U2 are connected to LED1, and pins 11 and 12 of U2 are the charging end and the discharging end respectively.

[0006] Preferably, the resistance value of R2 is 1K.

[0007] Preferably, the 188 power display supports 1-100 percentage display of battery power. The digital tube display is controlled by programming the MCU chip with AD / IO control pin detection technology, and the battery voltage is monitored with high / low level detection technology so that the digital tube can display the power.

[0008] Preferably, the colorful breathing light can be displayed in different colors according to the multiple power stages of the battery, saying goodbye to the traditional single colorless display. The luminous color is controlled by programming the MCU chip with AD / IO control pin detection technology, and the colorful breathing light display is controlled with PWM pulses.

[0009] Preferably, the colorful logo breathing effect can be customized to meet display needs. Users can display various logos, patterns, texts, etc. according to their own needs, and achieve the display effect by combining stickers with colorful lights.

[0010] Preferably, the stage power display uses LED multi-segment to display the current battery power. The traditional display gives users an intuitive experience. The display is controlled by programming the MCU chip using AD / IO control pin detection technology, and the battery voltage is monitored using high / low level detection technology so that the LED can display the power.

[0011] The beneficial effects of the utility model are as follows: the display of multi-color LED lamp beads is controlled by program writing, color change is achieved through the DO / IO control port, the brightness of the color is controlled through the high / low level port, and the duty cycle is controlled through the PWM pulse port to achieve a breathing display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 An overall schematic diagram provided for an embodiment of the utility model;

[0013] Figure 2 A schematic diagram of the battery protection module structure provided by an embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of an LED control module provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0016] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0018] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0019] like Figures 1 to 3 As shown, the embodiment of the utility model provides a multifunctional display circuit of a level meter and a power tool battery pack, including a battery protection module and an LED control module, the battery protection module includes B-, B+, R2, C8 and U1, the output end of B+ is connected to R2, the output end of R2 is connected to the VDD of U1, the VM end of U1 is connected to GND, the output end of B- is connected to the GND of U1, and C8 is connected between B- and R2;

[0020] The LED control module includes U2 and LED1, pin 1 of U2 is connected to B+, pins 9, 10, 13 and 14 of U2 are connected to LED1, and pins 11 and 12 of U2 are the charging end and the discharging end respectively.

[0021] In the embodiment, the resistance value of R2 is 1K.

[0022] In the embodiment, the 188 power display supports 1-100 percentage display of battery power. The digital tube display is controlled by programming the MCU chip using AD / IO control pin detection technology, and the battery voltage is monitored using high / low level detection technology so that the digital tube can display the power.

[0023] In the embodiment, the colorful breathing light can be displayed in different colors according to the multiple power stages of the battery, saying goodbye to the traditional single colorless display. The luminous color is controlled by programming the MCU chip using AD / IO control pin detection technology, and the colorful breathing light display is controlled by PWM pulses.

[0024] In the embodiment, the colorful logo breathing effect can be customized to meet display needs. Users can display various logos, patterns, texts, etc. according to their own needs, and achieve the display effect by combining stickers with colorful lights.

[0025] In the embodiment, the stage power display uses LED multi-segment to display the current battery power. The traditional display gives users an intuitive experience. The display is controlled by programming the MCU chip using AD / IO control pin detection technology, and the battery voltage is monitored using high / low level detection technology so that the LED can display the power.

[0026] Working Principle: Control the multi-color LED lamp display through program writing, realize color change through DO / IO control port, control the color brightness through high / low level port, and control the duty cycle through PWM pulse port to achieve breathing display effect.

[0027] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A multifunctional display circuit for a level meter and a power tool battery pack, characterized in that: It includes a battery protection module and an LED control module, wherein the battery protection module includes B-, B+, R2, C8 and U1, the output end of the B+ is connected to the R2, the output end of the R2 is connected to the VDD of U1, the VM end of U1 is connected to GND, the output end of the B- is connected to the GND of U1, and the C8 is connected between the B- and R2; The LED control module includes U2 and LED1, pin 1 of U2 is connected to B+, pins 9, 10, 13 and 14 of U2 are connected to LED1, and pins 11 and 12 of U2 are charging and discharging terminals respectively.

2. A level meter and a multifunctional display circuit for a power tool battery pack according to claim 1, characterized in that: The resistance value of R2 is 1K.

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