CN202404215U

CN202404215U - Storage battery inspection system

Info

Publication number: CN202404215U
Application number: CN2011205233457U
Authority: CN
Inventors: 王俊峰; 唐建恩
Original assignee: JIANGYIN GUOFENG PRECISION MACHINERY MANUFACTURING Co Ltd
Current assignee: JIANGYIN GUOFENG PRECISION MACHINERY MANUFACTURING Co Ltd
Priority date: 2011-12-15
Filing date: 2011-12-15
Publication date: 2012-08-29
Anticipated expiration: 2021-12-15

Abstract

The utility model discloses a storage battery inspection system, comprising a battery pack, an electronic switch gating circuit (3) and a MCU (Microprogrammed Control Unit) (4) serially connected with the electronic switch gating circuit (3). The battery pack comprises multiple serially connected batteries, each battery is correspondingly connected with a V/F conversion circuit in parallel, each V/F conversion circuit is correspondingly connected with an optical coupling isolation circuit in series, and each optical coupling isolation circuit is connected with the electronic switch gating circuit (3) in series. In the storage battery inspection system, a V/F conversion measurement method is used, and the method has no adverse effect on the measurement accuracy; the single battery is directly sampled, and the accuracy and the speed of measurement are fully guaranteed; the whole storage battery inspection system has no mechanical motion parts, so that the reliability of the system is improved.

Description

A kind of accumulator checking system

Technical field

The utility model relates to the accumulator checking technical field, especially relates to a kind of accumulator checking system.

Background technology

Accumulator is changing into when discharging and recharging, and is many and is together in series and forms battery pack, is necessary in the production terminal voltage of single accumulator is monitored and record.Owing to be connected in series between the accumulator; Make each cell power end not altogether; And when number of batteries more for a long time, the voltage range that the signal potential of accumulator will can bear above general mimic channel chip, these problems are that the design of voltage polling module brings difficulty.Therefore method to voltage detecting has appearred, two keys relay method commonly at present, and the two ends of each accumulator all are connected with two pairs of moving together contact of a two keys relay.When relay all was failure to actuate, all accumulators all broke off with routing inspection circuit.When carrying out voltage detecting, make relay closes successively by controller, make the negative electrode of corresponding accumulator insert testing circuit ground, anode gets into A/D converter (analog-to-digital conversion device) through impact damper.Though the method can be accomplished the voltage detecting to battery pack, work as accumulator quantity more for a long time, also corresponding the increasing of relay that needs makes that the circuit volume is big, power consumption, cost and failure rate are also higher.

The utility model content

The utility model is in order to solve at present in the voltage detecting of battery pack; When accumulator quantity for a long time; The circuit volume is big; Power consumption, cost and failure rate be problem of higher also, and a kind of accumulator checking system is provided for this reason, comprises electric battery, electronic switch gating circuit and the MCU (microcomputer) that is connected with the electronic switch gating circuit; Said electric battery comprises the individual series connected battery of n (1≤n≤20); All be parallel with a V/F change-over circuit (voltage frequency conversioning circuit) on said each battery, be in series with an optical coupling isolation circuit on said each V/F change-over circuit, said V/F change-over circuit, optical coupling isolation circuit, electronic switch gating circuit and MCU connect successively.

The beneficial effect of the utility model is:

(1) adopting the measuring method of V/F conversion to solve the electricity isolation between measured electric battery and the metering circuit, is pulse signal owing to what in optocoupler, transmit, therefore can not have a negative impact to measuring accuracy;

(2), can fully guarantee precision and the speed measured to the monocell Direct Sampling;

(3) complete machine does not have mechanical moving component, has improved the reliability of system.

Description of drawings

The utility model will explain through example and with reference to the mode of accompanying drawing, wherein:

Fig. 1 is the synoptic diagram of the utility model.

Embodiment

Disclosed all characteristics in this instructions, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.

Disclosed arbitrary characteristic in this instructions (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.

Accumulator checking system as shown in Figure 1; Comprise electric battery, electronic switch gating circuit 3 and the MCU4 that connects with electronic switch gating circuit 3; Said electric battery comprises a plurality of series connected battery BAT1, BAT2 ... BATn (n≤20); Said battery BAT1, BAT2 ... BATn (n≤20) goes up equal correspondence and is parallel with a V/F change-over

circuit

11,12 ... 1n (n≤20); Equal correspondence is in series with an optical

coupling isolation circuit

21,22 on said each V/F change-over circuit ... 2n (n≤20), said optical

coupling isolation circuit

21,22 ... 2n (n≤20) all connects with electronic switch gating circuit 3.The signals collecting of the utility model adopts the method for V/F conversion, and the output of V/F switching signal is delivered to analog switch through photoelectric isolating device, and processor is through control analog switch frequency acquisition signal.Data acquisition circuit and data processing circuit adopt photoelectric isolation technology, have realized the isolation on electric between the two, and every collection plate can have been gathered nearly 20 road battery voltage signals; The utility model can fully guarantee precision and the speed measured to the monocell Direct Sampling; Complete machine does not have mechanical moving component, has improved the reliability of system.

The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.

Claims

1. accumulator checking system; Comprise electric battery, an electronic switch gating circuit (3) and a MCU (4) who connects with electronic switch gating circuit (3); Said electric battery comprises a plurality of series connected battery; It is characterized in that: equal correspondence is parallel with a V/F change-over circuit on said each battery, and equal correspondence is in series with an optical coupling isolation circuit on said each V/F change-over circuit, and said each optical coupling isolation circuit is all connected with electronic switch gating circuit (3).