CN202453476U

CN202453476U - Battery sorting device capable of automatically calibrating measurement error of two-wire battery clamp

Info

Publication number: CN202453476U
Application number: CN2011204934638U
Authority: CN
Inventors: 王东轩; 李金录
Original assignee: Harbin Zhimu Technology Co Ltd
Current assignee: Harbin Zhimu Technology Co Ltd
Priority date: 2011-12-02
Filing date: 2011-12-02
Publication date: 2012-09-26
Anticipated expiration: 2021-12-02

Abstract

The utility model provides a battery sorting device capable of automatically calibrating the measurement error of a two-wire battery clamp. The battery sorting device includes a main controller, a power supply module, a communication module, and a sampling module. A PC is connected with the main controller via the communication module. The main controller is connected with the power supply module to charge or discharge a battery. The sampling module is connected with the battery to sample the battery.

Description

Automatically calibrate the device for separating batteries of two-wire system battery clamp measuring error

Technical field

The utility model relates to the device for separating batteries of automatic calibration two-wire system battery clamp measuring error, belongs to the battery detecting field.

Background technology

The sharp increase that needs along with battery, to the demand of battery detecting equipment also in simultaneous growth, how under the situation of guaranteeing the battery measurement equipment performance; The cost that reduces battery detecting equipment is the key of battery apparatus, and have two-wire system anchor clamps and four-wire system anchor clamps commonly used at present can be selected, because the line impedance and the contact resistance of two-wire system anchor clamps are bigger; When having electric current to pass through, can produce voltage difference, cause battery voltage measurement value and actual value error bigger, in order to improve the measuring accuracy of battery apparatus; The general four-wire system battery clamp of selecting carries out battery measurement; Yet also there are two problems in the four-wire system anchor clamps, the one, and four-wire system anchor clamps manufacturing procedure is many, and cost is high; The 2nd, the four-wire system clamp structure is complicated, and failure rate and spoilage are high.

The utility model proposes a kind of equipment of proofreading and correct battery two-wire system battery clamp voltage sample error, can proofread and correct the line impedance and the contact impedance of two-wire system anchor clamps, thereby realize accurately measuring.

Summary of the invention

The utility model proposes a kind of device for separating batteries of automatic calibration two-wire system battery clamp measuring error, proofreaies and correct through the voltage that the contact resistance to the two-wire system battery clamp produces, thereby realizes the accurately purpose of measurement cell voltage.

For realizing above-mentioned purpose, the utility model adopts following technical scheme:

The utility model proposes a kind of equipment, carries out modular design according to function and structure, comprises: master controller, power module, sampling module, communication module totally 4 parts are formed, and see accompanying drawing 1 for details.

With reference to the accompanying drawings 1, the utility model course of work is described:

Wherein PC connects master controller through communication module, and master controller connection electric power source pair of module battery charges or discharges, and sampling module connects battery and gathers battery characteristics.

According to the above course of work, ultimate principle is described below:

(1) ends charging and discharging currents at the short-and-medium time-out of constant current charge-discharge process, record cell voltage U1;

(2) recovering to record cell voltage U2 behind the charging and discharging currents;

(3) impedance of circuit and can regard a resistance R as in the contact resistance of battery, R=(U2-U1)/I, I are given electric current;

(4) the sampling cell voltage is U3, and the cell voltage after the calibration is U4, U4=U3-I*R;

(5) very short owing to stopping current time, there is lag-effect in the electrochemical reaction of battery, so this operation that stops electric current can exerting an influence to the actual test of battery.

The beneficial effect of the utility model:

The screening installation general measure is counted often, adopts the two-wire system anchor clamps can practice thrift cost greatly.

Description of drawings:

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

Embodiment:

For the technical scheme that makes the utility model is clearer, below in conjunction with accompanying drawing and embodiment, to the utility model further explain, instantiation described herein only in order to explain the utility model, is not limited to the utility model.

Embodiment:

Prepare a collection of (greater than 30) battery, a high precision multimeter;

(1) tested battery component is connected in the circuit;

(2) charging current being set is 1A, starts operation;

(3) first cell voltage of equipment demonstration is 3.055V, uses high-precision multimeter to measure this cell voltage and is 3.052V;

(4) repeating step 3, measure 30 batteries, and the sampled voltage of each battery of process comparison and the difference of virtual voltage are all less than 10mV.

Claims

1. calibrate the device for separating batteries of two-wire system battery clamp measuring error automatically; Comprise: master controller, power module, communication module; Sampling module; It is characterized in that: PC connects master controller through communication module, and master controller connection electric power source pair of module battery charges or discharges, and sampling module connects battery and gathers battery characteristics.