CN201364364Y

CN201364364Y - Internal resistance tester

Info

Publication number: CN201364364Y
Application number: CNU2009201160515U
Authority: CN
Inventors: 胡翔; 黄勇达; 张荔
Original assignee: WENZHOU MAKEPOWER ELECTRONICS CO Ltd
Current assignee: Zhejiang Chuangli Electronics Co Ltd
Priority date: 2009-03-20
Filing date: 2009-03-20
Publication date: 2009-12-16
Anticipated expiration: 2019-03-20

Abstract

The utility model relates to an internal resistance tester which comprises a shell, and a power supply, a micro-computer plate and a four-wire system measuring clamp which are arranged in the shell, wherein the front end surface of the shell is provided with a working panel which comprises a liquid crystal display screen, a measuring socket, a power switch and five keys; the five keys are a reset key, a storage key, a detection key, a page-up key and a page-down key; the micro-computer plate comprises a CPU, a standard constant-current source excitation module and a sampling module; the output end of the standard constant-current source excitation module is connected with one end of the four-wire system measuring clamp, and the input end thereof is connected with the CPU; and the input end of the sampling module is connected with the other end of the four-wire system measuring clamp, and the output end thereof is connected with the CPU. The internal resistance tester is characterized by 1. interference resistance, 2. special measuring clamp, 3. simpleness, convenience and practicability, 4. rapid reading, 5. data storage, 6. intuitional analog display, and 7. computer management.

Description

Internal resistance test device

Technical field

The utility model relates to a kind of internal resistance test device that is used to measure the internal resistance value of all kinds of accumulators.

Background technology

Along with the fast development of letter, breath, energy electronic technology, accumulator has been widely used in numerous areas such as post and telecommunications, communication, electric power, traffic, boats and ships, Aero-Space, emergency lighting at present.In order to give full play to the uninterrupted effect of battery backup unit, it guarantees the non-stop run of equipment, prevents because the massive losses that power fail causes.So the maintenance work of accumulator has also become the important step of power management department.The correct maintenance of accumulator and use have direct remarkable influence to the life-span of battery.The serviceable life that good maintenance and correct use can improve accumulator greatly.Battery service work in the past is all by manually detecting, and has that precision is low, workload is big, efficient is low, the not congruent drawback of data recording.

Summary of the invention

The purpose of this utility model is to overcome the defective of prior art, and a kind of simple to operate, internal resistance test device that precision is higher is provided.

For achieving the above object, the utility model adopts a kind of internal resistance test device, comprise shell, power supply in the enclosure is set, the micro computer plate, four-wire system is measured folder, the shell front end face is a working panel, working panel comprises LCDs, measure socket, power switch and 5 buttons, 5 buttons are by reset key, storage key, detect key, upturning key, downturning key is formed, the micro computer plate comprises CPU, standard constant current source stimulating module and sampling module, standard constant current source stimulating module output terminal links to each other with the end that four-wire system is measured folder, standard constant current source stimulating module input end links to each other with CPU, the input end of sampling module links to each other with the other end that four-wire system is measured folder, and the output terminal of sampling module links to each other with CPU.

The utility model further is set to internal resistance test device and comprises 232 interfaces, and 232 interfaces link to each other with CPU.

The utlity model has following characteristics:

1, anti-interference: accumulator cell charging and discharging waveform and switching noise do not influence precision basically.

2, special test folder: developed specially the contact resistance influence is reduced to minimum special test folder and special test head.

3, simple and practical: need not any outside adjustment, one inserts promptly.

4, quick reading: data repeat 4 seconds update cycles, with weak sound prompting.

5, data storing: maximum can store 880 batteries data, page-turnable inquiry, convenient whole group data recording.

6, visual simulation shows: provide the simulation display mode for oneself, intuitively show sentence read result with differing heights analog computer histogram.

7, computer management: be with 232 communication interfaces, can upload data and enter the computer management database, the Computer Analysis pipe can be provided.

Description of drawings

Fig. 1 is the utility model embodiment front view.

Fig. 2 is the utility model embodiment circuit block diagram.

Fig. 3 is the utility model examples measure schematic diagram.

Embodiment

As Fig. 1, shown in 2, specific embodiment of the utility model is a kind of internal resistance test device, comprise shell 1, be arranged on the power supply in the shell 1, the micro computer plate, four-wire system is measured folder, shell 1 front end face is a working panel 2, working panel 2 comprises, LCDs 21, measure socket 22 and 5 buttons, also be provided with 232 interfaces and power switch on the shell 1,5 buttons are by reset key, storage key, detect key, upturning key, downturning key is formed, the micro computer plate comprises CPU, standard constant current source stimulating module and sampling module, standard constant current source stimulating module output terminal links to each other with the end that four-wire system is measured folder, the permanent source and course stimulating module of standard input end links to each other with CPU, the input end of sampling module links to each other with the other end that four-wire system is measured folder, the output terminal of sampling module links to each other with CPU, and 232 interfaces link to each other with CPU.

As shown in Figure 3, the utility model adopts AC method to measure the internal resistance of cell, and with ac-excited being added on the accumulator, the electric current (I) of battery and the AC voltage drop (V) that this electric current produces at the battery two ends are flow through in measurement then, derive resistance R (V/I) thus.

Claims

1, a kind of internal resistance test device, it is characterized in that: internal resistance test device comprises shell, power supply in the enclosure is set, the micro computer plate, four-wire system is measured folder, the shell front end face is a working panel, working panel comprises LCDs, measure socket, power switch and 5 buttons, 5 buttons are by reset key, storage key, detect key, upturning key, downturning key is formed, the micro computer plate comprises CPU, standard constant current source stimulating module and sampling module, standard constant current source stimulating module output terminal links to each other with the end that four-wire system is measured folder, standard constant current source stimulating module input end links to each other with CPU, the input end of sampling module links to each other with the other end that four-wire system is measured folder, and the output terminal of sampling module links to each other with CPU.

2, internal resistance test device according to claim 1 is characterized in that: described internal resistance test device comprises 232 interfaces, and 232 interfaces link to each other with CPU.