CN204154881U - A kind of ice storing time grading plant - Google Patents

A kind of ice storing time grading plant Download PDF

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Publication number
CN204154881U
CN204154881U CN201420584603.6U CN201420584603U CN204154881U CN 204154881 U CN204154881 U CN 204154881U CN 201420584603 U CN201420584603 U CN 201420584603U CN 204154881 U CN204154881 U CN 204154881U
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China
Prior art keywords
accumulator
control circuit
discharge
charge
supply unit
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CN201420584603.6U
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Chinese (zh)
Inventor
黎莎
徐洲
鲍丰
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WUHAN LISAI TECHNOLOGY Co Ltd
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WUHAN LISAI TECHNOLOGY Co Ltd
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Abstract

The utility model relates to battery detecting technical field, particularly relates to a kind of ice storing time grading plant.Ice storing time grading plant comprises charge-discharge machine, at least one sieving and grading device and at least one DC/DC supply unit, described charge-discharge machine and the electrical connection of DC/DC supply unit, described charge-discharge machine is used for providing constant voltage at least one DC/DC supply unit, and by DC/DC supply unit to charge in batteries; Described sieving and grading device for controlling the discharge and recharge of accumulator, and according to the discharge current of accumulator and the capacity drawing accumulator discharge time, then carries out classification according to the capacity of accumulator to accumulator.This device has higher accuracy of detection, can extend battery, reduces locomotive operation cost, has higher detection efficiency and dependability.

Description

A kind of ice storing time grading plant
Technical field
The utility model relates to battery detecting technical field, particularly relates to a kind of ice storing time grading plant.
Background technology
Along with the development of railway construction in China, high-power electric locomotive and EMU get more and more.In these high-power electric locomotives and EMU, battery pack is power supply in support, plays an important role to the safe operation of locomotive and motor-car.But at present for the repair method of accumulator, also only rest on by judging that whether cell voltage is up to standard, battery temperature whether abnormal heating etc. judges the quality of battery, and measuring error is unavoidable, is difficult to the requirement meeting suitability for industrialized production.
For the defect existed in prior art, Chinese patent application 97116916.0, provide a kind of method of testing of battery behavior, in details of the words be the method for testing referring to a kind of remaining battery capacitance of storage, be battery is imposed the electric discharge a bit of time, measure battery terminal voltage value and discharge current value simultaneously, and utilize battery terminal voltage and discharge rate between this section, have the proportionality constant of an inverse ratio, then try to achieve discharge rate, then this discharge rate be multiplied by discharge current, residue capacitance of storage.
Although above-mentioned method of testing can detect the capacitance of storage of battery, there is the problem of accuracy of detection difference in the method.
For the problems referred to above, we need one to have comparatively high measurement accuracy, can extend battery, reduce locomotive operation cost, and have the ice storing time grading plant of higher detection efficiency.
Utility model content
The purpose of this utility model is to propose a kind of ice storing time grading plant, and it has higher accuracy of detection, can extend battery, reduces locomotive operation cost, has higher detection efficiency and dependability.
For reaching this object, the utility model by the following technical solutions:
A kind of ice storing time grading plant, it comprises charge-discharge machine, at least one sieving and grading device and at least one DC/DC supply unit, described charge-discharge machine and the electrical connection of DC/DC supply unit, described charge-discharge machine is used for providing constant voltage at least one DC/DC power supply unit, and by DC/DC supply unit to charge in batteries; Described sieving and grading device for controlling the discharge and recharge of accumulator, and according to the discharge current of accumulator and the capacity drawing accumulator discharge time, then carries out classification according to the capacity of accumulator to accumulator.
As a kind of preferred version of above-mentioned ice storing time grading plant, described charge-discharge machine comprises power supply unit and inversion unit, described power supply unit is used for by DC/DC supply unit to storage battery power supply, and the electric energy that inversion unit is used for being discharged by accumulator converts interchange to and passes to electrical network.
As a kind of preferred version of above-mentioned ice storing time grading plant, described sieving and grading device comprises charge-discharge control circuit, accumulator single-unit voltage collection circuit, input and cut-off circuit, timing circuit and control circuit, and described control circuit is electrically connected with DC/DC power transfer module, charge-discharge control circuit, accumulator single-unit voltage collection circuit, input and cut-off circuit, timing circuit.
As a kind of preferred version of above-mentioned ice storing time grading plant, described timing circuit is RTC real-time time control circuit.
As a kind of preferred version of above-mentioned ice storing time grading plant, described control circuit is connected with described DC/DC power transfer module by DA conversion control circuit.
As a kind of preferred version of above-mentioned ice storing time grading plant, also comprise AD conversion control circuit, described DC/DC power transfer module is connected with described control circuit by AD conversion control circuit, described AD conversion control circuit is used for the voltage and current detecting single-unit accumulator in real time, is regulated realize accumulator cell charging and discharging current constant control by PI.
As a kind of preferred version of above-mentioned ice storing time grading plant, also comprise the display device be connected with described sieving and grading device.
As a kind of preferred version of above-mentioned ice storing time grading plant, also comprise the warning device for detecting battery reversal connection.
The beneficial effects of the utility model are: this application provides a kind of ice storing time grading plant, the application is by the cooperation of charge-discharge machine with at least one sieving and grading device, charge-discharge machine is used for providing constant voltage at least one DC/DC power supply unit, and to charge in batteries; Simultaneously sieving and grading device is for controlling the discharge and recharge of accumulator, and according to the discharge current of accumulator and the capacity drawing accumulator discharge time, then carries out classification according to the capacity of accumulator to accumulator.This ice storing time grading plant has higher accuracy of detection, can extend battery, reduces locomotive operation cost, has higher detection efficiency and dependability.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the ice storing time grading plant that the utility model embodiment provides;
Fig. 2 is the schematic diagram of the RTC real-time time control circuit that the utility model embodiment provides;
Fig. 3 is the A/D convertor circuit schematic diagram that the utility model embodiment provides;
Fig. 4 is the IO control circuit schematic diagram that the utility model embodiment provides.
Wherein:
1: charge-discharge machine; 2: sieving and grading device; 3: accumulator; 4:DC/DC power transfer module.
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
As shown in Figure 1, present embodiments provide for a kind of ice storing time grading plant, it comprises charge-discharge machine 1, at least one sieving and grading device 2 and at least one DC/DC supply unit 4, charge-discharge machine and DC/DC supply unit 4 are electrically connected, charge-discharge machine 1 for providing constant voltage at least one DC/DC power supply unit, and is charged to accumulator 3 by DC/DC supply unit 4.Concrete, communicated by CAN system between charge-discharge machine 1 and sieving and grading device 2, charge-discharge machine 1 is powered to DC/DC power supply unit 4 by providing the bus power supply of constant voltage.
Sieving and grading device 2 for controlling the discharge and recharge of accumulator 3, and according to the discharge current of accumulator 3 and the capacity drawing accumulator 3 discharge time, then carries out classification according to the capacity of accumulator 3 to accumulator.Refer to discharge time herein from accumulator full capacity state, be discharged to the time required for cut-off voltage.As preferably, discharge process needs constant-current discharge.
Charge-discharge machine 2 comprises power supply unit and inversion unit, and power supply unit is used for by DC/DC power supply unit 4 to storage battery power supply, and inversion unit is used for converting the electric energy that accumulator 3 discharges to interchange and passes to electrical network.Concrete, the direct current that power supply unit can be adjustable, stable through link output voltages such as overcommutation, chopping depressuring, rectifying and wave-filterings by line voltage.Inverter is by the electric energy inversion telegram in reply net of locomotive storage batteries.Thus achieve the object of constant-current charge and battery discharge recovery, and then achieve the theory of green, environmental protection.
Sieving and grading device 2 comprises charge-discharge control circuit, accumulator single-unit voltage collection circuit, input and cut-off circuit, timing circuit and control circuit, and described control circuit is electrically connected with DC/DC power transfer module 4, charge-discharge control circuit, accumulator single-unit voltage collection circuit, input and cut-off circuit, timing circuit.
Wherein, charge-discharge control circuit can detect the quantity of the accumulator dropping into charging in real time, and can export required charging voltage by control DC/DC supply unit 4.
Charge-discharge control circuit detects accumulator 3 quantity dropping into discharge and recharge in real time, and by quantity information transmission to control circuit, the charging voltage required by control circuit control DC/DC power transfer module exports.
Accumulator single-unit voltage collection circuit detects accumulator 3 voltage in charging in real time, after battery single-unit is full of electricity, status information is passed to control circuit by it, and this full capacity accumulator 3 is excised by input and cut-off circuit by control circuit, does not affect the continuation charging of remaining power 3.
Accumulator single-unit voltage collection circuit detects accumulator 3 voltage in electric discharge in real time, timing circuit detects discharge time simultaneously, when battery single-unit discharges into the lower limit of battery discharging technological requirement, this accumulator single-unit is excised, do not affect the continuation electric discharge of remaining power.Both can pass to control circuit by information of voltage and temporal information, by battery discharge current and calculate battery capacity accurately discharge time, thus realize the classification of battery.
Highly preferred, timing circuit is RTC real-time time control circuit.Send steering order by control circuit, by RTC real-time time control circuit, the discharge current of record accumulator body and discharge time, to reach the object detecting accumulator capacity.
With reference to figure 2, it provides the circuit theory diagrams of RTC real-time time control circuit, and this circuit is by IIC circuit pull-up resistor R6, R7, and protective resistance R5, crystal Y2, battery BT1 and chip U2 form.CPU carries out read-write operation by iic bus to U2, and obtains current real time clock information by U2.
Control circuit is connected with DC/DC power transfer module by DA conversion control circuit.Send steering order by control circuit, by DA conversion control circuit control DC/DC power supply unit, carry out constant-current charge operation or constant-current discharge operation according to the technique of setting.
DC/DC power transfer module is connected with control circuit by AD conversion control circuit, and AD conversion control circuit is used for the voltage and current detecting single-unit accumulator in real time, is regulated realize accumulator cell charging and discharging current constant control by PI.
Concrete, send steering order by control circuit, detected the voltage of cell batteries by AD conversion control circuit in real time, then drop into/excise by input and cut-off circuit the battery having completed charge/discharge process.Send steering order by control circuit, detected the charge/discharge current of battery pack by AD conversion control circuit in real time, regulated by software PI, to reach the object of current constant control.
With reference to figure 3, what it represented is A/D convertor circuit schematic diagram, and this concrete circuit is made up of high-precision meter amplifier U9, precision resister R8, R9.In this circuit, the enlargement factor of instrument amplifier is:
G=49.4/(12.1+0.249)+1=5
Sieving and grading device also comprises IO control circuit, and with reference to figure 4, this circuit connects transistor array chip U24 by eight road NPN Darlingtons and forms.Its input signal is the IN1-IN8 from CPU, and OUT1-OUT8 is for driving No. 8 relays for output signal, reaches the object that excision has completed the cell of charge/discharge process.
Ice storing time grading plant also comprises the display device be connected with described sieving and grading device.This display device is used for the display of testing result.
Ice storing time grading plant also comprises the warning device for detecting battery reversal connection.This device gives the alarm after battery reversal connection, improves the security of battery charging and discharging.Ice storing time grading plant also has battery temperature compensation function simultaneously.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within protection domain of the present utility model.

Claims (8)

1. an ice storing time grading plant, it is characterized in that, comprise charge-discharge machine (1), at least one sieving and grading device (2) and at least one DC/DC supply unit (4), described charge-discharge machine (1) and DC/DC supply unit (4) electrical connection, described charge-discharge machine (1) for providing constant voltage at least one DC/DC supply unit (4), and is charged to accumulator (3) by DC/DC supply unit (4); Described sieving and grading device (2) is for controlling the discharge and recharge of accumulator, and according to the discharge current of accumulator and the capacity drawing accumulator (3) discharge time, then according to the capacity of accumulator (3), classification is carried out to accumulator (3).
2. ice storing time grading plant according to claim 1, it is characterized in that, described charge-discharge machine (1) comprises power supply unit and inversion unit, described power supply unit is used for by DC/DC supply unit (4) to accumulator (3) power supply, and inversion unit is used for converting the electric energy that accumulator (3) discharges to interchange and passes to electrical network.
3. ice storing time grading plant according to claim 2, it is characterized in that, described sieving and grading device (2) comprises charge-discharge control circuit, accumulator single-unit voltage collection circuit, input and cut-off circuit, timing circuit and control circuit, and described control circuit is electrically connected with DC/DC power transfer module (4), charge-discharge control circuit, accumulator single-unit voltage collection circuit, input and cut-off circuit, timing circuit.
4. ice storing time grading plant according to claim 3, is characterized in that, described timing circuit is RTC real-time time control circuit.
5. ice storing time grading plant according to claim 3, is characterized in that, described control circuit is connected with described DC/DC power transfer module (4) by DA conversion control circuit.
6. ice storing time grading plant according to claim 3, it is characterized in that, also comprise AD conversion control circuit, described DC/DC power transfer module (4) is connected with described control circuit by AD conversion control circuit, described AD conversion control circuit is used for the voltage and current detecting single-unit accumulator in real time, is regulated realize accumulator cell charging and discharging current constant control by PI.
7. ice storing time grading plant according to claim 1, is characterized in that, also comprises the display device be connected with described sieving and grading device (2).
8. ice storing time grading plant according to claim 1, is characterized in that, also comprises the warning device for detecting battery reversal connection.
CN201420584603.6U 2014-10-10 2014-10-10 A kind of ice storing time grading plant Active CN204154881U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104297693A (en) * 2014-10-10 2015-01-21 武汉黎赛科技有限责任公司 Detection grading device for storage battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104297693A (en) * 2014-10-10 2015-01-21 武汉黎赛科技有限责任公司 Detection grading device for storage battery

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