CN209417261U

CN209417261U - A kind of disconnected direct current online testing device of accumulator capacity

Info

Publication number: CN209417261U
Application number: CN201822046750.9U
Authority: CN
Inventors: 吴海霞; 马庆龙; 赵泽彪; 李朝津; 杨晓杰; 杨成亮; 杨秀凡; 鲍立香; 刘斌; 王国辉; 夏海飞; 唐良富; 陈凤涛; 敬炳侠; 戴思源; 杨奎; 许星杰
Original assignee: Zhaotong Power Supply Bureau of Yunnan Power Grid Co Ltd
Current assignee: Zhaotong Power Supply Bureau of Yunnan Power Grid Co Ltd
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2019-09-20
Anticipated expiration: 2028-12-06

Abstract

The utility model relates to a kind of disconnected direct current online testing devices of accumulator capacity, it is characterized in that, it include: A.C. contactor K1, intermediate relay K2, acquisition unit ACG, battery voltage inner walkway unit B MU03, battery current Hall sensor SH is isolated in alternating voltage, data processing controller DGU, voltage dropping silicon chain D1 and D2 and accessory power supply BAT.The circuit of the utility model is simple, easy to control, and protection is complete, can not both be powered off with on-line measurement battery capacity, actual loading, and can reduce labor intensity, calculates capacity automatically, generates report, discharge curve.

Description

A kind of disconnected direct current online testing device of accumulator capacity

Technical field

The utility model relates to a kind of accumulator capacity online testing devices.

Background technique

The method of traditional test accumulator capacity is battery off-line test, and battery is needed to deviate to survey from charger Examination, off-line test trouble, there is some potential safety problems, the utility model be exactly be to solve accumulator capacity on-line testing and design 's.

Summary of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, design a kind of accumulator internal resistance on-line testing dress It sets.

In order to achieve the above objectives, the technical scheme adopted by the utility model is

A kind of disconnected direct current online testing device of accumulator capacity characterized by comprising A.C. contactor K1, the K1 It is the normally closed splice grafting tentaculum of exchange, controls charger direct current output；Intermediate relay K2, the K2 are normally opened intermediate relays, touching The wire loop of point control K1, K2 coil are controlled by the control of DGU；Acquisition unit ACG is isolated in alternating voltage, and the ACG is to hand over Voltage acquisition unit is flowed, is used as detection municipal power failure；Battery voltage inner walkway unit B MU03 is as acquisition monomer Cell voltage and test internal resistance are used；Battery current Hall sensor SH, is stuck in the charging and discharging circuit of battery, measures electric power storage The discharge current in pond is used, and the calculating of accumulator capacity AH is participated in；Data processing controller DGU, as master controller for controlling The exchange of charger inputs, and calculates discharge capacity AH in conjunction with the voltage internal resistance data of BMU03 and calculates the health of every batteries Situation；Voltage dropping silicon chain D1 and D2, for preventing battery voltage decline excessive；Accessory power supply BAT, for battery group direct current High_voltage isolation is transformed into 12V low pressure supply DGU and uses.

Further, the A.C. contactor K1 is normally-closed contact A.C. contactor, and it is defeated that normally-closed contact is connected on charger Out in circuit, coil power supply uses alternating current 220V.

Further, the K2 is normally opened contact relay, and normally opened contact is connected in K1 wire loop.

Further, the alternating voltage isolation acquisition unit ACG moment detects line voltage, when municipal power failure occurs Notify DGU.

Further, the battery voltage inner walkway unit B MU03 is the every section monomer battery voltage of acquisition and internal resistance ?.

Further, the Hall sensor SH, facilitating for opening cover in battery thick connecting line, and detection battery is put Electric current；

Further, the DGU uses industrial computer, carries display screen band touch function, and real-time display battery is every Economize on electricity cell voltage internal resistance and battery current.The DGU also has 4 USB interfaces, 2 RS485 interfaces, 1 network interface, input Output I/O port 4, using WIN system.

Further, the voltage dropping silicon chain D1 and D2 prevents accumulator battery voltage from declining when giving electric power storage tank discharge It is more；There are also for preventing battery pack open circuit, if open-circuit cell, which occurs, is unable to powering load, charger is given by voltage dropping silicon chain Actual loading power supply.

The accumulator capacity online testing device of the utility model is to make to charge by disconnecting charger exchange input Machine stops working, and is powered by battery directly to actual loading, calculates electric discharge by calculating discharge current and the integral of time and holds Amount, electric discharge stop having 6 conditions: 1, battery voltage reaches given threshold；2, certain economize on electricity cell voltage reaches lower voltage limit；3, it reaches To the discharge time of setting；4, reach the discharge capacity of setting；5, municipal power failure has a power failure；6, terminate to discharge manually.Electric discharge every time There are record, automatic report generation.Therefore the positive beneficial effect of the utility model is as follows:

1, circuit is simple, easy to control, protects complete.

2, on-line measurement battery capacity, actual loading do not power off.

3, it does not generate heat, battery supplies actual loading, energy conservation.

4, contactor controls charger ac input end, facilitates control.

5, labor intensity is reduced, calculates capacity automatically, generates report, discharge curve.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model

Specific embodiment

Specific embodiment of the present utility model is illustrated with reference to the accompanying drawing.

Embodiment one, referring to Fig. 1, the utility model accumulator capacity online testing device, comprising: A.C. contactor K1, The K1 is the normally closed splice grafting tentaculum of exchange, controls charger direct current output；Intermediate relay K2, the K2 are normally opened intermediate relays Device, contact control the wire loop of K1, and K2 coil is controlled by the control of DGU；Acquisition unit ACG is isolated in alternating voltage, described ACG is AC voltage sampling unit, is used as detection municipal power failure；Battery voltage inner walkway unit B MU03, is conduct It acquires monomer battery voltage and test internal resistance is used；Battery current Hall sensor SH, is stuck in the charging and discharging circuit of battery, The discharge current for measuring battery is used, and the calculating of accumulator capacity AH is participated in；Data processing controller DGU, as master controller Exchange for controlling charger inputs, and calculates discharge capacity AH in conjunction with the voltage internal resistance data of BMU03 and calculates every economize on electricity The health status in pond, the DGU use industrial computer, carry display screen band touch function, can real-time display battery it is every Economize on electricity cell voltage internal resistance and battery current.Voltage dropping silicon chain D1 and D2, for preventing battery voltage decline excessive；Accessory power supply BAT, for battery group high direct voltage isolated variable to be used at 12V low pressure supply DGU.

The working principle of the utility model accumulator capacity online testing device is as follows:

When needing to test accumulator capacity, into set interface, discharge time, discharge capacity, battery lower class limit electricity Pressure after single battery lower voltage limit is set, clicks electric discharge starting, and DGU control K2 coil obtains electric, K2 contact closure, K1 coil Must be electric, the contact K1 disconnects, and charger stops working, and battery starts to power to actual loading, has electric current inside Hall sensor It flows through, BMU03 starts to calculate the internal resistance of cell and also gives DGU monomer voltage, and DGU is collected monomer voltage, in monomer Resistance, battery voltage give DGU, and DGU is shown in these parameters on interface by processing, and is stored to inside hard disk, finally Electric discharge terminates, and saves data, and DGU controls K2 coil losing electricity, and the contact K2 disconnects, and K1 coil losing electricity, K1 contact closure, charger is just Often work, on the one hand charges the battery, one side powering load, the original situation of restoring scene, and DGU is according to discharge current, electricity Pressure, internal resistance, discharge time generate every economize on electricity tankage report, draw discharge curve automatically to calculating.

Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should Understand；Specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model In range.

Claims

The direct current online testing device 1. a kind of accumulator capacity is broken characterized by comprising

A.C. contactor K1, the K1 are the normally closed splice grafting tentaculums of exchange, control charger direct current output；

Intermediate relay K2, the K2 are normally opened intermediate relays, and contact controls the wire loop of K1, and K2 coil is controlled by DGU Control；

Acquisition unit ACG is isolated in alternating voltage, and the ACG is AC voltage sampling unit, uses as detection municipal power failure；

Battery voltage inner walkway unit B MU03 is used as acquisition monomer battery voltage and test internal resistance；

Battery current Hall sensor SH, is stuck in the charging and discharging circuit of battery, and the discharge current for measuring battery is used, ginseng With the calculating of accumulator capacity AH；

Data processing controller DGU is used to control the exchange input of charger, calculates discharge capacity AH, knot as master controller The voltage internal resistance data for closing BMU03, calculate the health status of every batteries；

Voltage dropping silicon chain D1 and D2, for preventing battery voltage decline excessive；

Accessory power supply BAT, for battery group high direct voltage isolated variable to be used at 12V low pressure supply DGU.
The direct current online testing device 2. accumulator capacity according to claim 1 is broken, which is characterized in that the ac contactor Device K1 is normally-closed contact A.C. contactor, and normally-closed contact is connected in charger output loop, and coil power supply uses alternating current 220V.
The direct current online testing device 3. accumulator capacity according to claim 1 is broken, which is characterized in that the K2 is normally opened Contact relay, normally opened contact are connected in K1 wire loop.
The direct current online testing device 4. accumulator capacity according to claim 1 is broken, which is characterized in that the alternating voltage The isolation acquisition unit ACGACG moment detects line voltage, notifies DGU when municipal power failure occurs.
The direct current online testing device 5. accumulator capacity according to claim 1 is broken, which is characterized in that the battery electricity Pressure inner walkway unit B MU03 acquires every section monomer battery voltage and internal resistance is used.
The direct current online testing device 6. accumulator capacity according to claim 1 is broken, which is characterized in that the hall sensing The opening that device SH is equipped with, which facilitates, to be covered in battery thick connecting line, and battery discharging electric current is detected.
The direct current online testing device 7. accumulator capacity according to claim 1 is broken, which is characterized in that the DGU is used Industrial computer carries display screen band touch function, the every economize on electricity cell voltage internal resistance of real-time display battery and battery current.
The direct current online testing device 8. accumulator capacity according to claim 1 is broken, which is characterized in that the DGU also has There are 4 USB interfaces, 2 RS485 interfaces, 1 network interface, input and output I/O port 4, using WIN system.
The direct current online testing device 9. accumulator capacity according to claim 1 is broken, which is characterized in that the voltage dropping silicon chain D1 and D2 prevents accumulator battery voltage decline excessive when giving electric power storage tank discharge；Also for preventing battery pack open circuit, if hair Raw open-circuit cell is unable to powering load, and charger then passes through voltage dropping silicon chain and powers to actual loading.