CN203595761U - Detection device of lithium battery charger - Google Patents

Abstract

The utility model discloses a detection device of a lithium battery charger, and relates to the technical field of chargers. The device is characterized by comprising a signal acquisition module used to acquire voltage signals and current signals, a singlechip which is used to receive data of the signal acquisition module and outputs the data, a display module used to receive output data of the singlechip and displays the data, and a PWM signal generator which provides PWM modulating signals for the singlechip. The signal acquisition module comprises a constant current unit used to acquire voltage signals, and a constant voltage unit used to acquire current signals. The device is advantaged by convenient operation and high test efficiency.

Description

The pick-up unit of lithium battery charger

Technical field

The utility model relates to charger technical field, particularly relates to a kind of pick-up unit of lithium battery charger.

Background technology

As everyone knows, lithium battery is one of electric energy storage device often using in people's daily life, in the use procedure of lithium battery, lithium battery charger has been played the part of very important effect, at present, along with the fast development of high precision electronic equipment, people have proposed more and more higher requirement to the performance of lithium battery, therefore lithium battery has obtained development fast in recent years, but because lithium battery charger is one of requisite support equipment of lithium battery, therefore the quality of lithium battery charger performance will determine the charging quality of lithium battery and serviceable life or the safety problem of lithium battery self to a certain extent, tradition mainly contains reometer and voltage table to the checkout equipment of lithium battery charger, but practice discovery, there is following defect in these traditional measuring instruments: often need to use reometer and voltage table, therefore inconvenient operation in testing process simultaneously, simultaneously each test all needs lithium battery to charge, and this not only wastes electric energy, and charge and discharge process also causes and measures the low of efficiency for a long time simultaneously.

Utility model content

The technical problems to be solved in the utility model is: the pick-up unit that a kind of easy to operate, lithium battery charger that testing efficiency is high is provided.

The technical scheme that the utility model is taked for the technical matters existing in solution known technology is:

A pick-up unit for lithium battery charger, comprising:

For gathering the signal acquisition module of voltage signal and current signal; Described signal acquisition module comprises constant current unit for gathering voltage signal and for gathering the constant voltage unit of current signal;

For receiving the data of described signal acquisition module, and the single-chip microcomputer that described data are exported;

For receiving the output data of described single-chip microcomputer, the line number of going forward side by side display module according to the show;

And provide the pwm signal generator of PWM modulation signal for described single-chip microcomputer.

As optimal technical scheme, the utility model has also adopted following technical scheme:

Described constant current unit and constant voltage unit are electrically connected with the analog quantity I/O port of single-chip microcomputer by protective resistance respectively.

Advantage and the good effect that the utlity model has are: by adopting technique scheme, the utility model can be realized simply and easily multiple parameters of charger are detected, and has advantages of that testing efficiency is high simultaneously.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Wherein: 1, signal acquisition module; 2, power module; 3, single-chip microcomputer; 4, pwm signal generator; 5, display module.

Embodiment

For further understanding utility model content of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

Refer to Fig. 1, a kind of pick-up unit of lithium battery charger, comprising: signal acquisition module 1, power module 2, single-chip microcomputer 3, pwm signal generator 4 and display module 5; Wherein: signal acquisition module 1 is for gathering voltage signal and the current signal of charger output terminal; Signal acquisition module 1 comprises constant current unit for gathering voltage signal and for gathering the constant voltage unit of current signal; In use, constant current unit, for lithium battery charger provides a constant electric current, utilizes Ohm law like this, just can read rapidly and accurately open-circuit voltage or the constant voltage starting potential of lithium battery charger; Constant voltage unit, for lithium battery charger provides a constant voltage, so just can read continuous current and the cut-off current of lithium battery charger rapidly and accurately; Power module 2 electrically connects as this single-chip microcomputer 3 with the power drives terminal of single-chip microcomputer 3 direct supply of 24V is provided; Single-chip microcomputer 3, on the one hand for receiving the data of signal acquisition module 1, is exported to display module 5 by described data on the other hand; Display module 5 is mainly used in receiving the output data of single-chip microcomputer 3, and data are shown; In this specific embodiment, the data that display module 5 shows mainly contain: open-circuit voltage, continuous current, constant voltage starting potential and the cut-off current of lithium battery charger.Pwm signal generator 4 is electrically connected with the pwm signal input terminal of single-chip microcomputer 3, and pwm signal generator 4 is mainly single-chip microcomputer 3 PWM modulation signal is provided.

In order to improve the security of pick-up unit of above-mentioned lithium battery charger, as preferably, described constant current unit and constant voltage unit are electrically connected with the analog quantity I/O port of single-chip microcomputer 3 by protective resistance respectively.

Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.

Claims (2)

1. a pick-up unit for lithium battery charger, is characterized in that: comprising:

For gathering the signal acquisition module of voltage signal and current signal; Described signal acquisition module comprises constant current unit for gathering voltage signal and for gathering the constant voltage unit of current signal;

For receiving the data of described signal acquisition module, and the single-chip microcomputer that described data are exported;

For receiving the output data of described single-chip microcomputer, the line number of going forward side by side display module according to the show;

And provide the pwm signal generator of PWM modulation signal for described single-chip microcomputer.

2. the pick-up unit of lithium battery charger according to claim 1, is characterized in that: described constant current unit and constant voltage unit are electrically connected with the analog quantity I/O port of single-chip microcomputer by protective resistance respectively.