CN104569840A - Aging detection method and device for individual battery - Google Patents
Aging detection method and device for individual battery Download PDFInfo
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- CN104569840A CN104569840A CN201410832148.1A CN201410832148A CN104569840A CN 104569840 A CN104569840 A CN 104569840A CN 201410832148 A CN201410832148 A CN 201410832148A CN 104569840 A CN104569840 A CN 104569840A
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Abstract
The invention discloses an aging detection method and device for an individual battery. The method comprises the following steps: establishing a connection with a to-be-detected battery after receiving a detection request of detecting the aging degree of the to-be-detected battery; obtaining preset charge/discharge parameters corresponding to the detection request; performing a charge/discharge test on the to-be-detected battery according to the preset charge/discharge parameters through a constant-current constant-voltage charge/discharge circuit; acquiring a voltage parameter and a current parameter during the charge/discharge test of the to-be-detected battery; determining battery aging data corresponding to the voltage parameter and the current parameter. With the aging detection method and device, a problem of low detection speed of the aging degree of the battery in the prior art is solved and an effect of quickly and accurately detecting the aging degree of the individual battery is achieved.
Description
Technical field
The present invention relates to battery detecting field, in particular to a kind of degradation detecting method and device of battery cell.
Background technology
Now, battery is widely used in every field.And among reality uses, battery is normally packed in groups by battery cell, namely carry out using with the form of electric battery, and the battery cell of same electric battery is generally same model, same size battery initial parameter closely.In the use procedure of battery, need often to detect the degree of aging of each battery cell, if there is degree of aging to depart from the larger monomer of electric battery average level, then need disallowable, to avoid the performance affecting whole electric battery.
Current, the method detecting cell degradation degree is generally the complete electric discharge of big current, the method needs by taking the operation of complete discharge and recharge to measure the actual capacity of battery to battery, and the process of whole measurement not only expends time in, and measurement operation itself also can aggravate the aging of battery.
For the slow-footed problem of degree of aging detecting battery in prior art, at present effective solution is not yet proposed.
Summary of the invention
For the slow-footed problem of degree of aging detecting battery in correlation technique, not yet propose effective solution at present, for this reason, fundamental purpose of the present invention is the degradation detecting method and the device that provide a kind of battery cell, to solve the problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of degradation detecting method of battery cell, the method comprises: after receiving the detection request detecting mesuring battary degree of aging, sets up the connection with mesuring battary; Obtain and ask corresponding default discharge and recharge parameter with detection; According to default discharge and recharge parameter, charge-discharge test is carried out to mesuring battary by constant current constant voltage charge-discharge circuit; Gather voltage parameter when charge-discharge test carries out to mesuring battary and current parameters; Determine voltage parameter and cell degradation data corresponding to current parameters.
Further, after receiving the detection request detecting mesuring battary degree of aging, degradation detecting method also comprises: obtain the model of mesuring battary and the battery nominal data of model; Obtain and ask corresponding default discharge and recharge parameter to comprise with detection: from tables of data, read the default discharge and recharge parameter with model.
Further, before the battery nominal data obtaining model, degradation detecting method comprises: after receiving demarcation order, sets up the connection with the demarcation battery of model; Obtain the rated voltage and rated current of demarcating battery, obtain battery nominal data.
Further, determine that voltage parameter and cell degradation data corresponding to current parameters comprise: the first ratio of calculating voltage parameter and rated voltage, and the second ratio of current parameters and rated current; Read the first ratio and the cell degradation data pointed by the second ratio.
Further, after determining voltage parameter and cell degradation data corresponding to current parameters, degradation detecting method also comprises: by voltage parameter, current parameters and cell degradation data upload to host computer; And by the display of voltage parameter, current parameters and cell degradation data on a display screen.
To achieve these goals, according to a further aspect in the invention, provide a kind of degradation detecting device of battery cell, this device comprises: the first link block, for after receiving the detection request detecting mesuring battary degree of aging, set up the connection with mesuring battary; First acquisition module, asks corresponding default discharge and recharge parameter for obtaining with detecting; Charge-discharge modules, for carrying out charge-discharge test according to default discharge and recharge parameter to mesuring battary by constant current constant voltage charge-discharge circuit; Acquisition module, for gathering voltage parameter when carrying out charge-discharge test to mesuring battary and current parameters; Main control module, for determining voltage parameter and cell degradation data corresponding to current parameters.
Further, degradation detecting device also comprises: the second acquisition module, for after receiving the detection request detecting mesuring battary degree of aging, obtains the model of mesuring battary and the battery nominal data of model; First acquisition module comprises: read module, for reading the default discharge and recharge parameter with model from tables of data.
Further, degradation detecting device comprises: the second link block, for before the battery nominal data obtaining model, receives after demarcating order, sets up the connection with the demarcation battery of model; Second obtains submodule, for before the battery nominal data obtaining model, obtains the rated voltage and rated current of demarcating battery, obtains battery nominal data.
Further, main control module comprises: computing module, for the first ratio of calculating voltage parameter and rated voltage, and the second ratio of current parameters and rated current; Reading submodule, for reading the cell degradation data pointed by the first ratio and the second ratio.
Further, degradation detecting device also comprises: upper transmission module, for after determining voltage parameter and cell degradation data corresponding to current parameters, by voltage parameter, current parameters and cell degradation data upload to host computer; And display module, for after determining voltage parameter and cell degradation data corresponding to current parameters, with by the display of voltage parameter, current parameters and cell degradation data on a display screen.
Adopt the embodiment of the present invention, mesuring battary is connected with the degradation detecting device of battery cell, main control module issues the discharge and recharge parameter preset corresponding with mesuring battary, to carry out discharge and recharge to mesuring battary, and battery parameter when gathering mesuring battary discharge and recharge determines the degree of aging of this mesuring battary.Wherein, in the process detected, acquisition module can in real time to the voltage parameter of mesuring battary, current parameters carries out high-precision measurement, and by measurement feedback to main control module, main control module is according to the degree of aging of this voltage parameter and current parameters determination battery, in this testing process, without the need to being fully charged mesuring battary and discharging completely, thus shorten detection time, and achieve real-time collection voltage parameter and current parameters, the accuracy of current parameters and the voltage parameter collected is improved, thus the accuracy of the cell degradation data determined is improved.By the present invention, solve in prior art the slow-footed problem of the degree of aging detecting battery, achieve the effect that battery cell degree of aging fast and accurately is detected.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram of the degradation detecting method of battery cell according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the degradation detecting device of battery cell according to the embodiment of the present invention; And
Fig. 3 is a process flow diagram optionally detected mesuring battary according to the embodiment of the present invention.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in instructions of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Fig. 1 is the process flow diagram of the degradation detecting method of battery cell according to the embodiment of the present invention, and the method comprises the steps: as shown in Figure 1
Step S102, after receiving the detection request detecting mesuring battary degree of aging, sets up the connection with mesuring battary.
Step S104, obtains and asks corresponding default discharge and recharge parameter with detection.
Step S106, carries out charge-discharge test according to default discharge and recharge parameter to mesuring battary by constant current constant voltage charge-discharge circuit.
Step S108, gathers voltage parameter when carrying out charge-discharge test to mesuring battary and current parameters.
Step S110, determines voltage parameter and cell degradation data corresponding to current parameters.
Adopt the embodiment of the present invention, mesuring battary is connected with the degradation detecting device of battery cell, main control module issues the discharge and recharge parameter preset corresponding with mesuring battary, to carry out discharge and recharge to mesuring battary, and battery parameter when gathering mesuring battary discharge and recharge determines the degree of aging of this mesuring battary.Wherein, in the process detected, acquisition module can in real time to the voltage parameter of mesuring battary, current parameters carries out high-precision measurement, and by measurement feedback to main control module, main control module is according to the degree of aging of this voltage parameter and current parameters determination battery, in this testing process, without the need to being fully charged mesuring battary and discharging completely, thus shorten detection time, and achieve real-time collection voltage parameter and current parameters, the accuracy of current parameters and the voltage parameter collected is improved, thus the accuracy of the cell degradation data determined is improved.By the present invention, solve in prior art the slow-footed problem of the degree of aging detecting battery, achieve the effect that battery cell degree of aging fast and accurately is detected.
At the step S102 of the above embodiment of the present invention, after receiving the detection request detecting mesuring battary degree of aging, cell degradation detection method can also comprise: obtain the model of mesuring battary and the battery nominal data of model.
Particularly, when having detected that mesuring battary accesses, the model of the model of mesuring battary with the battery prestored being compared, has obtained the model of mesuring battary.Wherein, the battery size prestored is a statistics to battery size; Battery nominal data refers to the rated current and rated voltage that are recorded by the type brand new cells group reference instrument, and these nominal datas is used for calibrating other similar batteries.
In the above-described embodiments, step S104, obtains and asks corresponding default discharge and recharge parameter to comprise with detection: from tables of data, read the default discharge and recharge parameter with model.
Wherein, presetting discharge and recharge parameter is the discharge and recharge policing parameter for different battery prestored, and discharge and recharge strategy pre-sets and is stored among main control module, in use, can increase as required or delete discharge and recharge strategy.
Need to further illustrate, before the battery nominal data obtaining model, degradation detecting method can comprise: after receiving demarcation order, sets up the connection with the demarcation battery of model; Obtain the rated voltage and rated current of demarcating battery, obtain battery nominal data.
In an optional embodiment of the present invention, step S110, determines that voltage parameter and cell degradation data corresponding to current parameters can comprise: the first ratio of calculating voltage parameter and rated voltage, and the second ratio of current parameters and rated current; Read the first ratio and the cell degradation data pointed by the second ratio.
In another optional embodiment of the present invention, step S110, after determining voltage parameter and cell degradation data corresponding to current parameters, degradation detecting method also comprises: by voltage parameter, current parameters and cell degradation data upload to host computer; And by the display of voltage parameter, current parameters and cell degradation data on a display screen.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the process flow diagram of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Fig. 2 is the schematic diagram of the degradation detecting device of battery cell according to the embodiment of the present invention, as shown in Figure 2, this degradation detecting device can comprise: the first link block 10, first acquisition module 20, charge-discharge modules 30, acquisition module 40 and main control module 50.
Wherein, the first link block is used for after receiving the detection request detecting mesuring battary degree of aging, sets up the connection with mesuring battary; First acquisition module asks corresponding default discharge and recharge parameter for obtaining with detecting; Charge-discharge modules is used for carrying out charge-discharge test according to default discharge and recharge parameter to mesuring battary by constant current constant voltage charge-discharge circuit; Acquisition module is for gathering voltage parameter when carrying out charge-discharge test to mesuring battary and current parameters; Main control module is for determining voltage parameter and cell degradation data corresponding to current parameters.
Adopt the embodiment of the present invention, mesuring battary is connected with the degradation detecting device of battery cell, main control module issues the discharge and recharge parameter preset corresponding with mesuring battary, to carry out discharge and recharge to mesuring battary, and battery parameter when gathering mesuring battary discharge and recharge determines the degree of aging of this mesuring battary.Wherein, in the process detected, acquisition module can carry out high-precision measurement to the voltage of mesuring battary, current signal in real time, and by measurement feedback to main control module, main control module is according to the degree of aging of this voltage and current parameter determination battery, in this testing process, without the need to being fully charged mesuring battary and discharging completely, shorten detection time, and Real-time Collection voltage signal and current signal, the accuracy of the current parameters collected is high, thus makes the accuracy of the cell degradation data determined high.By the present invention, solve in prior art the slow-footed problem of the degree of aging detecting battery, achieve the effect that battery cell degree of aging fast and accurately is detected.
Acquisition module in the above-described embodiments can be multimeter, reometer or voltage table.The battery parameter collected by acquisition module is simulating signal, after main control module receives simulating signal, filtering process is carried out to it, and filtered simulating signal is converted to digital signal, then this digital signal is carried out to next step process, as, it to be calculated, relatively or from tables of data, read the operations such as corresponding data.
In the above-described embodiments, the first acquisition module can comprise: read module, for reading the default discharge and recharge parameter with model from tables of data.
In the above embodiment of the present invention, this degradation detecting device can comprise: the second acquisition module, for after receiving the detection request detecting mesuring battary degree of aging, obtains the model of mesuring battary and the battery nominal data of model.
Further, this degradation detecting device can also comprise: the second link block and second obtains submodule.
Wherein, the second link block, for before the battery nominal data obtaining model, receives after demarcating order, sets up the connection with the demarcation battery of model; Second obtains submodule, for before the battery nominal data obtaining model, obtains the rated voltage and rated current of demarcating battery, obtains battery nominal data.
In the above embodiment of the present invention, the main control module of this degradation detecting device can comprise: computing module and reading submodule.
Wherein, computing module, for the first ratio of calculating voltage parameter and rated voltage, and the second ratio of current parameters and rated current; Reading submodule, for reading the cell degradation data pointed by the first ratio and the second ratio.
In the above embodiment of the present invention, this degradation detecting device can also comprise: upper transmission module and display module.
Wherein, upper transmission module, for after determining voltage parameter and cell degradation data corresponding to current parameters, by voltage parameter, current parameters and cell degradation data upload to host computer; And display module, for after determining voltage parameter and cell degradation data corresponding to current parameters, by the display of voltage parameter, current parameters and cell degradation data on a display screen, display module can be liquid crystal display, but be not limited to liquid crystal display, also can be other display device, as touch-screen etc.
The modules provided in the present embodiment is identical with the using method that the corresponding step of embodiment of the method provides, application scenarios also can be identical.It is noted, of course, that the scheme that above-mentioned module relates to can be not limited to content in above-described embodiment one and scene, and above-mentioned module may operate in terminal or mobile terminal, can pass through software or hardware implementing.
Introduce the above embodiment of the present invention in detail below in conjunction with Fig. 3, as shown in Figure 3, using the degradation detecting device of battery cell to carry out detection to mesuring battary can realize by the following method:
Step S302: with mesuring battary same model and with batch battery carry out parameter calibration.
Particularly, before cell degradation test is carried out to mesuring battary, the brand-new battery identical with the model of mesuring battary can be obtained and carry out parameter calibration, obtain rated voltage and rated current.
In this processing procedure, by the degradation detecting device of the above-mentioned brand new cells access battery cell for demarcating, when degradation detecting device has detected that demarcating instruction inputs, the discharge and recharge strategy that main control module can match with the model of this new battery according to the instruction selection of input, selected strategy and relevant information thereof can be transferred to display module and show on display module by main control module; Performing among the process to the discharge and recharge of new battery, under the control of main control module, acquisition module can gather the cell degradation data of new battery, then the data collected are shown by display module, simultaneously, the cell degradation raw data that acquisition module collects can be stored, and the cell degradation data that gather of acquisition module can by the instant process of main control module.When discharge and recharge strategy execution is complete, the calibration result of measured new cell degradation degree can be shown by display module, for demarcating mesuring battary by master control set.
Step S304: use discharge and recharge strategy to detect the degree of aging of mesuring battary.
Particularly, after receiving the instruction that the cell degradation degree of mesuring battary is detected, mesuring battary is accessed degradation detecting device, and the same discharge and recharge strategy that degradation detecting device adopts and adopts among above-mentioned calibration process carries out discharge and recharge to mesuring battary.When receiving charging instruction, degradation detecting device is charged to mesuring battary by constant-current constant-voltage charging circuit; When receiving electric discharge instruction, degradation detecting device is discharged to mesuring battary by constant current constant voltage discharge circuit.Electric energy is provided by power supply when charging; When discharging, the electric energy that mesuring battary discharges is dissipated by power termination.Among the process of mesuring battary being carried out to discharge and recharge, Real-time Collection can be transferred to main control module to the voltage parameter of mesuring battary and current parameters by acquisition module, the cell degradation original number received then is carried out analyzing and processing by main control module, then by the cell degradation parameter obtained by uploading module transfer to host computer, simultaneously main control module also can show cell degradation situation by display module.
Wherein, parameter calibration refers to the rated current and rated voltage that are recorded by this brand new cells reference instrument, and by these parameters for calibrating other similar batteries; The method for expressing of cell degradation situation with concrete data list, also can represent with figure.
Such as, the current parameters of the mesuring battary that collects of acquisition module when discharge and recharge and voltage parameter is calculated; First ratio of calculating current parameter and rated current, and the second ratio of calculating voltage parameter and rated voltage, read the first ratio and cell degradation data corresponding to the second ratio from tables of data; Shown by display module by the form of icon.
As can be seen from the above description, present invention achieves following technique effect:
Adopt the embodiment of the present invention, mesuring battary is connected with the degradation detecting device of battery cell, main control module issues the discharge and recharge parameter preset corresponding with mesuring battary, to carry out discharge and recharge to mesuring battary, and battery parameter when gathering mesuring battary discharge and recharge determines the degree of aging of this mesuring battary.Wherein, in the process detected, acquisition module can carry out high-precision measurement to the voltage of mesuring battary, current signal in real time, and by measurement feedback to main control module, main control module is according to the degree of aging of this voltage and current parameter determination battery, in this testing process, without the need to being fully charged mesuring battary and discharging completely, shorten detection time, and Real-time Collection voltage signal and current signal, the accuracy of the current parameters collected is high, thus makes the accuracy of the cell degradation data determined high.By the present invention, solve in prior art the slow-footed problem of the degree of aging detecting battery, achieve the effect that battery cell degree of aging fast and accurately is detected.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a degradation detecting method for battery cell, is characterized in that, comprising:
After receiving the detection request detecting mesuring battary degree of aging, set up the connection with described mesuring battary;
Obtain and ask corresponding default discharge and recharge parameter with described detection;
According to described default discharge and recharge parameter, charge-discharge test is carried out to described mesuring battary by constant current constant voltage charge-discharge circuit;
Gather voltage parameter when charge-discharge test carries out to described mesuring battary and current parameters;
Determine described voltage parameter and cell degradation data corresponding to described current parameters.
2. degradation detecting method according to claim 1, is characterized in that,
After receiving the detection request detecting mesuring battary degree of aging, described degradation detecting method also comprises: obtain the model of described mesuring battary and the battery nominal data of described model;
Obtaining asks corresponding default discharge and recharge parameter to comprise with described detection: from tables of data, read the described default discharge and recharge parameter with described model.
3. degradation detecting method according to claim 2, is characterized in that, before the battery nominal data obtaining described model, described degradation detecting method comprises:
After receiving demarcation order, set up the connection with the demarcation battery of described model;
Obtain rated voltage and the rated current of described demarcation battery, obtain described battery nominal data.
4. degradation detecting method according to claim 3, is characterized in that, determines that described voltage parameter and cell degradation data corresponding to described current parameters comprise:
Calculate the first ratio of described voltage parameter and described rated voltage, and the second ratio of described current parameters and described rated current;
Read the described cell degradation data pointed by described first ratio and described second ratio.
5. degradation detecting method as claimed in any of claims 1 to 4, is characterized in that, after determining described voltage parameter and cell degradation data corresponding to described current parameters, described degradation detecting method also comprises:
By described voltage parameter, described current parameters and described cell degradation data upload to host computer; And
By the display of described voltage parameter, described current parameters and described cell degradation data on a display screen.
6. a degradation detecting device for battery cell, is characterized in that, comprising:
First link block, for after receiving the detection request detecting mesuring battary degree of aging, sets up the connection with described mesuring battary;
First acquisition module, asks corresponding default discharge and recharge parameter for obtaining with described detection;
Charge-discharge modules, for carrying out charge-discharge test according to described default discharge and recharge parameter to described mesuring battary by constant current constant voltage charge-discharge circuit;
Acquisition module, for gathering voltage parameter when carrying out charge-discharge test to described mesuring battary and current parameters;
Main control module, for determining described voltage parameter and cell degradation data corresponding to described current parameters.
7. degradation detecting device according to claim 6, is characterized in that,
Described degradation detecting device also comprises: the second acquisition module, for after receiving the detection request detecting mesuring battary degree of aging, obtains the model of described mesuring battary and the battery nominal data of described model;
Described first acquisition module comprises: read module, for reading the described default discharge and recharge parameter with described model from tables of data.
8. degradation detecting device according to claim 7, described degradation detecting device comprises:
Second link block, for before the battery nominal data obtaining described model, receives after demarcating order, sets up the connection with the demarcation battery of described model;
Second obtains submodule, for before the battery nominal data obtaining described model, obtains rated voltage and the rated current of described demarcation battery, obtains described battery nominal data.
9. degradation detecting device according to claim 8, is characterized in that, described main control module comprises:
Computing module, for calculating the first ratio of described voltage parameter and described rated voltage, and the second ratio of described current parameters and described rated current;
Reading submodule, for reading the described cell degradation data pointed by described first ratio and described second ratio.
10. according to the degradation detecting device in claim 6 to 9 described in any one, it is characterized in that, described degradation detecting device also comprises:
Upper transmission module, for after determining described voltage parameter and cell degradation data corresponding to described current parameters, by described voltage parameter, described current parameters and described cell degradation data upload to host computer; And
Display module, for after determining described voltage parameter and cell degradation data corresponding to described current parameters, with by the display of described voltage parameter, described current parameters and described cell degradation data on a display screen.
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