CN105182248B - Secondary cell detecting system and prediction type control method - Google Patents
Secondary cell detecting system and prediction type control method Download PDFInfo
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- CN105182248B CN105182248B CN201510654268.1A CN201510654268A CN105182248B CN 105182248 B CN105182248 B CN 105182248B CN 201510654268 A CN201510654268 A CN 201510654268A CN 105182248 B CN105182248 B CN 105182248B
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Abstract
The embodiment of the invention discloses a kind of secondary cell detecting system, including：Interior power network, electric energy buffer module, master controller, and multiple detected units, wherein, electric energy buffer module is connected to interior power network and an external electrical network, each detected unit includes secondary cell to be detected, electric energy is input to interior power network by it in electric discharge, electric energy is obtained from interior power network in charging, the master controller is configured to, and the state based on electric energy buffer module determines the mode of operation of multiple detected units, it is started work according to the mode of operation of determination, and control the electric energy buffer module to balance the electric energy on the interior power network.Also disclose the method for controlling the detecting system.By the detecting system and control method, the security risk of secondary cell detecting system is reduced.
Description
Technical field
The present invention relates to the detection of the charge-discharge performance of secondary cell, more particularly, to a kind of secondary cell detecting system
And its prediction type control method.
Background technology
In various portable electric appts, the use of battery is indispensable.In various batteries, chemical cell is with its skill
The advantages such as art is ripe, cheap, discharge performance stabilization, energy conversion efficiency height, turn into most widely used one kind.According to electricity
The specifically used mode in source and the difference of character of use, chemical cell can be divided into four classes again：Galvanic cell, battery, deposit
Battery and fuel cell, wherein, galvanic cell is also known as one-shot battery, and it can only carry out a discharge process；And battery is also known as
For secondary cell, it is after discharge process terminates, the state that can be returned to by way of charging before electric discharge, and then realizes more
Secondary discharge and recharge.In order to ensure the product quality of battery, quality testing department and manufacturing enterprise can carry out battery detecting work.And due to
Can multiple discharge and recharge characteristic, the detection work of secondary cell and other batteries simultaneously differ, and have the characteristics of its is exclusive.
A variety of existing secondary cell detecting systems, such as resistance-type power consumption secondary cell detecting system be present.Should
System is the detecting system of earliest mature, and it consumes the electric discharge energy of secondary cell using resistance or other dissipative cells
Amount.Although with loop structure it is simple, technically easily realize and the advantages of cost is low, because this detecting system will
The energy that secondary cell discharges when discharging all is converted into heat energy by dissipative cell, can cause substantial amounts of energy dissipation, and meeting
Cause temperature-rise effect considerable in battery detecting factory building.
It is more widely energy feedback type secondary cell detecting system to use at present.This kind of system utilizes rectification circuit,
Flowing of the energy from secondary cell to external power grid direction can be realized.So, when battery charges, energy inputs electricity by external power grid
Pond, in battery discharge, energy flows into external power grid from battery, realizes the recovery of battery discharging energy, avoids because battery is put
The energy discharged when electric energy dissipation problem caused by by resistance consumption.But this kind of system energy feedback is inefficient, return
Serious distortion often be present in the waveform for being fed to external power grid.Also, existing energy feedback type secondary cell detecting system is often
The energy discharged when secondary cell is discharged is directly output to carry out energy feedback by the way of national grid, and there is one for this
Fixed security risk.Because in secondary cell detection process, system is possible to directly provide energy to national grid, for example,
In the most extreme case, all detected batteries are in discharge condition, and detecting system can export a large amount of to national grid
Energy, and mostly distortion current.In fact, for the consideration of law and safety, only power-generating enterprise can be to state's household electrical appliances
Net power supply, remaining enterprise can only use from national grid power taking and can not be powered to national grid, therefore this to national grid
Export the situation of distortion current and be not allowed to.Therefore, the energy feedback of current energy feedback type secondary cell detecting system
Mode is there is certain risk, it is necessary to further improve.
The content of the invention
In view of deficiency of the prior art, the present invention is proposed, by way of power network in setting and buffer module, is avoided
Electric energy directly feeds into security risk caused by national grid.
In one aspect of the invention, there is provided a kind of secondary cell detecting system, including：Interior power network, electric energy buffering mould
Block, master controller, and multiple detected units, wherein, the electric energy buffer module is connected to outside the interior power network and one
Portion's power network, the multiple detected unit each includes secondary cell to be detected, and is input to electric energy in electric discharge
The interior power network, electric energy is obtained from the interior power network in charging, the master controller is configured to, and mould is buffered based on the electric energy
The state of block determines the mode of operation of the multiple detected unit, it is started work according to the mode of operation of determination, and control
The electric energy on the electric energy buffer module balance interior power network is made, wherein under each mode of operation, is detected unit whole
Without shelving, ground is continuous to work in the individual work period.
According to one embodiment, the master controller is further configured to, once detect the multiple detected unit
When being more than the interior power network to the electric energy of the interior power network input needs the electric energy obtained, the electric energy buffer module is controlled to store
Unnecessary electric energy；Once detect that the multiple detected unit is less than the interior power network to the electric energy of the interior power network input and needed
During the electric energy to be obtained, the electric energy buffer module is controlled to supplement the electric energy lacked to the interior power network.
In another aspect of the present invention, there is provided a kind of method for controlling secondary cell detecting system, the detecting system bag
Interior power network, electric energy buffer module, and multiple detected units are included, each detected unit includes secondary electricity to be detected
Pond, the electric energy buffer module, which is connected to the interior power network and an external electrical network, methods described, to be included：Delayed based on the electric energy
The current capacities of die block, it is the multiple detected respective mode of operation of Unit selection, wherein under each mode of operation,
Being detected unit, without shelving, ground is continuous to work within the whole work period；Based on to the electric energy buffering mould in the whole work period
The prediction of the volume change of block, adjust the mode of operation of the multiple detected unit；So that the multiple detected unit is pressed
Start work in the detecting system according to the mode of operation after adjustment, wherein the multiple detected unit in electric discharge by electricity
The interior power network can be input to, electric energy is obtained from the interior power network in charging；Control described in the electric energy buffer module balance
Electric energy on interior power network.
According to one embodiment, include for multiple detected respective mode of operations of Unit selection：The electric energy is obtained to delay
The current capacities of die block；Simulate some be detected unit respectively according to multiple mode of operations start working in the case of, electric energy
Multiple volume emulation values corresponding to buffer module difference；The multiple volume emulation value and volumetric(al) standards value are contrasted, therefrom really
Make the volume emulation value closest to volumetric(al) standards value；Will be corresponding closest to the volume emulation value of volumetric(al) standards value with this
Mode of operation be defined as this some be detected the mode of operation of unit.
According to one embodiment, adjusting the mode of operation of the multiple detected unit includes：Simulate the electric energy buffering
Volume change of the module within the whole work period；Volume change based on simulation, it is determined that to the multiple detected list
The adjustment operation that the mode of operation of member is carried out.
According to one embodiment, adjusting the mode of operation of the multiple detected unit also includes, it is assumed that carries out the tune
Whole operation, based on the mode of operation after adjustment, simulate the capacity of renewal of the electric energy buffer module within the whole work period
Change；Volume change based on renewal, it is determined that the renewal carried out to the mode of operation of the multiple detected unit adjusts；More
In the case that new adjustment is different from the adjustment operation, the detected unit being related to is arranged to not work；Renewal adjustment with
In the case of the adjustment operation identical, the mode of operation of the multiple detected unit is adjusted according to the adjustment operation.
According to one embodiment, it is determined that the adjustment carried out to the mode of operation of the multiple detected unit operates bag
Include：Volume change based on simulation, determine that the time overflowed occurs in the electric energy buffer module；Determine the electric energy buffer module
There is the species overflowed；The species of time and spilling based on the spilling, it is determined that the adjustment operation carried out.
According to one embodiment, balancing the electric energy on the interior power network by the electric energy buffer module includes：Once inspection
When measuring the detected unit and being more than the interior power network to the electric energy of the interior power network input and need the electric energy obtained, institute is controlled
State electric energy buffer module and store unnecessary electric energy；Once detect that the detected unit is small to the electric energy of the interior power network input
When the interior power network needs the electric energy obtained, the electric energy buffer module is controlled to supplement the electric energy lacked to the interior power network.
According to one embodiment, the electric energy for controlling the electric energy buffer module to lack to the interior power network supplement includes：Sentence
Whether the electric energy stored in the electric energy buffer module of breaking is more than the electric energy lacked, is less than described lack in the electric energy of storage
Electric energy in the case of, control the electric energy buffer module to obtain electric energy from the external electrical network, and supplement to the interior power network.
According to one embodiment, the secondary cell is lithium ion battery, and the mode of operation includes recharge-discharge-fill
Electric endless form, and electric discharge-charge-discharge cycles mode
Using detecting system proposed by the present invention and control method, it is possible to prevente effectively from being made in the prior art to national grid
Into security risk.
Brief description of the drawings
Fig. 1 shows the structural representation of secondary cell detecting system according to embodiments of the present invention；
Fig. 2 shows the flow chart of the method for the control secondary cell detecting system according to one embodiment；
It is to be detected the flow chart of Unit selection mode of operation that Fig. 3, which is shown according to one embodiment,；
Fig. 4 shows to adjust the sub-step of the mode of operation of detected unit in one embodiment；
Fig. 5 shows to be seted the tone really according to one embodiment the specific steps of whole operation；
Fig. 6 A show to be detected volume change of the unit within the whole work period in one example；
Fig. 6 B show to overflow the contrast relationship of situation and mode adjustment in one example；
Fig. 7 shows to adjust the sub-step of the mode of operation of detected unit in another embodiment.
Embodiment
Below by drawings and examples, the technical scheme of the embodiment of the present invention is described in further detail.
Fig. 1 shows the structural representation of secondary cell detecting system according to embodiments of the present invention.As shown in figure 1, at this
In the embodiment of invention, secondary cell detecting system includes：Interior power network 11, detected unit 12, electric energy comprising secondary cell
Buffer module 13 and master controller 14.
It is detected unit 12 and is connected to interior power network 11 and master controller 14, secondary electricity is carried out under the control of the master controller
The charging and discharging in pond；Wherein, electric energy is input to interior power network 11 when secondary cell discharges, when secondary cell charges from interior
Power network 11 obtains electric energy.
Electric energy buffer module 13 is connected to interior power network 11 and master controller 14, is additionally coupled to an external electrical network 15.
Master controller 14 is configured to, and the state based on electric energy buffer module 13 determines the Working mould of multiple detected units 12
Formula, it is started work according to the mode of operation of determination, and control electric energy buffer module 13 to balance the electric energy on interior power network 11.
The embodiment of above-mentioned all parts is described separately below.
As it was previously stated, in the energy feedback type secondary cell detecting system of prior art, secondary cell is connected directly to
Outside national grid, thus the risk that a large amount of distortion currents are inputted to national grid be present.And as shown in figure 1, in the present invention
Embodiment in, in order to avoid such risk, provide in the detection system in power network, carry out " reception " battery discharging energy.Such as
This, discharge current will not be directly inputted into national grid.
In one embodiment, interior power network is the internal electric network for detecting enterprise, and it is different from the national grid of outside.It is outside
National grid electric energy can be externally provided, and the effect of interior power network is transmitted between detected unit and electric energy buffer module
Energy, interior power network neither produce energy nor consumed energy in itself.According to one embodiment, interior power network is direct current network.
Due to providing interior power network, in an embodiment of the present invention, the detected unit 12 comprising secondary cell is connecting
After being started working to detecting system, there can't be any direct interaction with the national grid of outside, but be connected to interior power network
11 and master controller 14, the charging and discharging of secondary cell are carried out under the control of the master controller.Specifically, in secondary cell
During electric discharge, electric energy is input into interior power network 11, and when secondary cell charges, electric energy is obtained from interior power network 11.
In one embodiment, it is detected unit 12 and is operable with different mode of operations, under each mode of operation, quilt
Without shelving, ground is continuous to work detection unit within the whole work period.Specifically, for example, lithium ion battery etc secondary cell
When dispatching from the factory in half-full state, then in detection process, it is possible to so that the detected unit comprising lithium ion battery
First mode of operation of " filling-putting-to fill ", or second mode of operation of " putting-filling-to put " are worked in, wherein in the first Working mould
Under formula, be detected unit and charge to first full up, be then vented electric energy, finally charge to again it is half-full, so as to complete an inspection
Survey the work period；And in the second operation mode, it is detected unit and is then vented electric energy first, then charge to full up, finally puts
Electricity arrives half-full.Within a work period, being detected unit, ground is continuous to work without shelving.For other kinds of secondary cell
For, its factory state is different, and optional mode of operation is also different.It is discussed herein primarily within the whole work period continuous
The situation of the detected unit of work.
In one embodiment, being detected unit 12 also includes (not shown) on-off control circuit and parameter acquisition circuit,
Wherein on-off control circuit is used for the circuit on-off for controlling secondary cell to be charged and discharged, and parameter acquisition circuit is secondary for gathering
Parameter during battery charging and discharging.
In one embodiment, the voltage of interior power network is higher than the voltage for being detected secondary cell in unit 12.At this moment, it is necessary to
Voltage reduction module and respective load are connected between detected unit and interior power network.With reference to Fig. 1, in one embodiment, it is detected
Unit 12 is connected to interior power network 11 when secondary cell charges via unit voltage reduction module 16, and the unit voltage reduction module 16 is by
The voltage needed for secondary cell that the voltage of power network is down in detected unit；Also, it is detected unit 12 to put in secondary cell
Interior power network 11 is connected to via the first load blocks 17 when electric, the electric energy that first load blocks 17 discharge secondary cell is whole
Interior power network 11 is fed to after stream.According to an embodiment of the invention, above-mentioned first load blocks 17 are energy feedback type electronic loads
Module, rectification can be carried out to electric current, then be fed to interior power network.
In Fig. 1, multiple detected units 12 are connected to the interior power network in detecting system.In fact, it is detected unit
Number and mode of operation can be controlled and set as needed, this will be explained hereinafter.
As it was previously stated, interior power network does not produce energy or consumed energy in itself, and simultaneously, multiple detected units 12 are all
Interior power network is connected to charged and/or discharged, therefore, it is necessary to electric energy buffer module 13 maintains the energy balance of interior power network,
It is, when producing net energy inflow on interior power network, unnecessary energy is stored, and has net energy stream on interior power network
When going out, the energy that this part lacks is supplemented.Correspondingly, as shown in figure 1, electric energy buffer module 13 is connected to interior power network 11 and master control
Device 14 processed, so that under the control of master controller 14, the electric energy of power network in balance.In addition, electric energy buffer module 13 is also connected with
To external electrical network 15, so that when being necessary, electric energy is obtained from external electrical network 15.The external electrical network 15 can be the state of standard
Family's power network or detection enterprise external, other offer electric energy power network.
For the needs of balance electric energy, a critical function of electric energy buffer module 13 is exactly the storage and release of electric energy.
Therefore, in one embodiment, electric energy buffer module 13 includes battery, for storing electric energy and release electric energy.Battery
Capacity determines according to the battery capacity and number for being detected unit 12.
In addition, electric energy buffer module 13 can also include charging control circuit, for controlling battery from interior power network 11 or
The circuit on-off of electric energy is obtained from external electrical network 15.Electric energy buffer module 13 can also include charge/discharge control circuit, for controlling
The inside power network 11 of battery discharges the circuit on-off of electric energy.Again, it can be seen that for security consideration, whole detecting system
Electric energy only is obtained from external electrical network 15, without conveying electric energy to it.In addition, electric energy buffer module 13 also includes buffer parameter
Acquisition Circuit, for gathering battery stores electricity energy and discharging the parameter in power process.
As shown in figure 1, in one embodiment, electric energy buffer module 13 passes through the first voltage reduction module 18-1 and second respectively
Voltage reduction module 18-2 is connected to interior power network 11 and external electrical network 15, wherein the first voltage reduction module 18-1 is by the voltage drop of interior power network 11
The voltage needed for battery into electric energy buffer module, and the voltage of external electrical network 15 is down to storage by the second voltage reduction module 18-2
Voltage needed for battery.It is appreciated that usually, the voltage of external electrical network 15 is unified setting and provided, and interior power network 11
Voltage can then be set according to the needs of detecting system.Therefore, the voltage of interior power network 11 and the voltage of external electrical network 15
Can be with identical, can also be different.Correspondingly, the first voltage reduction module 18-1 and the second voltage reduction module 18-2 decompression performance can phases
Together, can also be different.
In addition, electric energy buffer module 13 is also connected to interior power network 11, the second load mould by the second load blocks 19
Block 19 will be fed to the interior power network after the electric energy rectification of the battery release in electric energy buffer module.According to the implementation of the present invention
Example, above-mentioned second load blocks 19 can be energy feedback type electronic load module, and rectification is carried out to electric current, then be fed to interior
Power network.
It is appreciated that the balance of electric energy needs master controller to operate all parts in detecting system on interior power network
Control could realize.Therefore, master controller 14 is configured to, the state based on electric energy buffer module determines the multiple be detected
The mode of operation of unit, it is started work according to the mode of operation of determination, and control described in the electric energy buffer module balance
Electric energy on interior power network.
As it was previously stated, being detected unit has different working modes.In a kind of scheme, can be simply to set in advance by
The mode of operation of detection unit, such as all detected units are all first discharged, then charge.But this embodiment
High requirement is proposed for the capacity of electric energy buffer module.Since in the case where all detected units all discharge, electric energy
Buffer module 13 needs to absorb the electric energy of all detected unit releases.
Therefore, under one embodiment of the present invention, master controller 14 is primarily based on the state of electric energy buffer module 13
To determine, can allow how much detected unit is started working, and the mode of operation allowed.In detected unit according to permission
Mode of operation be operated after, master controller 14 controls electric energy buffer module 13 to balance the electric energy on interior power network 11.Specifically
Ground, master controller 14 are further configured to, once detect that the electric energy that the inside power network 11 of detected unit inputs is more than interior power network
During the electric energy that 11 needs obtain, the electric energy buffer module 13 is controlled to store unnecessary electric energy；Once detect detected unit
When the electric energy that 12 inside power networks 11 input is less than the electric energy that interior power network needs obtain, control the electric energy buffer module 13 inwardly electric
Net 11 supplements the electric energy lacked.Further, the electric energy stored in electric energy buffer module 13 is less than the above-mentioned electric energy lacked
In the case of, control electric energy buffer module 13 obtains electric energy from external electrical network 15, and supplements to interior power network 11.Thus, master controller
The whole work process of 14 pairs of detecting systems is controlled comprehensively.
The method that master controller is controlled to detecting system is detailed below.
Fig. 2 shows the flow chart of the method for the control secondary cell detecting system according to one embodiment, wherein described two
Primary cell detecting system is detecting system as described above, as shown in Figure 1.
It is more based on the current capacities of electric energy buffer module in step 21 as shown in Fig. 2 according to the method for the embodiment
The individual respective mode of operation of detected Unit selection, wherein under each mode of operation, unit is detected in the whole work period
Interior nothing shelves the continuous work in ground；In step 22, based on the prediction to the volume change of electric energy buffer module in the whole work period,
Adjust the mode of operation of the multiple detected unit；In step 23 so that after above-mentioned multiple detected units are according to adjustment
Mode of operation starts work in the detection system, wherein electric energy is input to interior electricity by the multiple detected unit in electric discharge
Net, electric energy is obtained from the interior power network in charging；In step 24, control electric energy buffer module balances the electricity on the interior power network
Energy.
The specific executive mode of above-mentioned each step is described below.
First, it is multiple detected respective works of Unit selection based on the current capacities of electric energy buffer module in step 21
Operation mode.The step meets the capacity limit of electric energy buffer module it is intended that the appropriate mode of operation of each detected Unit selection
System.
In one embodiment, the residual capacity of electric energy buffer module is considered.For each detected unit, for its selection
Such mode of operation, it is, under such mode of operation, the expection residual capacity of electric energy buffer module is maximum.
In another embodiment, a volumetric(al) standards value is set.If a detected unit is according to certain mode of operation work
After work, the mode of operation is then defined as this and is detected by the expection capacity of electric energy buffer module closest to the volumetric(al) standards value set
Survey the suitable mode of operation of unit.Fig. 3 shows the flow chart for detected Unit selection mode of operation according to the embodiment,
It is exactly the sub-step of step 21.In this embodiment, the step and flow shown in Fig. 3 are performed for each detected unit i.
As shown in figure 3, first, in step 211, the current capacities of acquisition electric energy buffer module.
Then, in step 212, simulate some and be detected the situation that unit i starts working according to multiple mode of operations respectively
Under, multiple volume emulation values corresponding to electric energy buffer module difference.As it was previously stated, being detected unit may operate in multiple differences
Mode of operation.In step 212, the situation that unit i starts working according to different working modes that is detected, Jin Ermo are simulated respectively
The volume change of electric energy buffer module in these various cases is drawn up, obtains multiple volume emulation values corresponding to its difference.Example
Such as, for the lithium ion battery in half-full state when dispatching from the factory, detected unit may operate in the of " filling-putting-to fill "
One mode of operation, or second mode of operation of " putting-filling-to put ".Then, in step 212, detected unit i can be simulated respectively
In the case of the first mode of operation, the first volume emulation value of electric energy buffer module, and according to the second Working mould
In the case that formula works, the second volume emulation value of electric energy buffer module.Other kinds of battery may have different dispatch from the factory
State, and different testing requirements, correspondingly, detected unit may have more kinds of different mode of operations, such as first
" fill-put " mode of operation that is full up, then being put into half-full is charged to, is first vented electric energy, is then charged to half-full " put-fill " Working mould
Formula, more complicated " filling-putting-to fill-put " mode of operation, and " putting-filling-to put-fill " pattern, etc..For what may be had
Multiple-working mode, in step 212, its working condition is simulated respectively, obtain the simulation capability value of electric energy buffer module.
It is appreciated that being detected charging and discharging state of the unit within the whole work period can change.In this step,
After only simulating one " step-length ", the expection volume change of electric energy buffer module, volume emulation value is obtained.
Then, in step 213, above-mentioned multiple volume emulation values and volumetric(al) standards value are contrasted, therefrom determine closest to
The volume emulation value of volumetric(al) standards value.
It is appreciated that above-mentioned volumetric(al) standards value is pre-set for a threshold value comparing.Preferably, the threshold value can
To reflect the perfect condition of electric energy buffer module.In one embodiment, above-mentioned volumetric(al) standards value is arranged to, electric energy buffering mould
The half of the total capacity of block, because now, electric energy buffer module, which is in, can both absorb electric energy, can discharge the ideal of electric energy again
State.In other embodiments, above-mentioned volumetric(al) standards value can also carry out other settings as needed.
In step 213, the volumetric(al) standards value of the multiple volume emulation values that can obtain step 212 and above-mentioned setting is one by one
It is compared, so that it is determined that going out the volume emulation value closest to volumetric(al) standards value.
More specifically, in the case of lithium ion battery, the first volume emulation value and second are had been obtained in step 212
Volume emulation value.In step 213, the first capability value and the second capability value can be contrasted, calculates the first volume emulation value respectively
And the second difference between volume emulation value and volumetric(al) standards value, i.e. the first difference and the second difference, then judge the first difference
Which is smaller with the second difference.If the first difference is smaller, then the first volume emulation value closer to volumetric(al) standards value, if
Two differences are smaller, then the second volume emulation value is closer to volumetric(al) standards value.
In the case of more multi-operation mode, volume emulation value and capacity corresponding to these mode of operations can be calculated respectively
Difference between standard value, determine the minimum volume emulation value of difference, that is, the volume emulation closest to volumetric(al) standards value
Value.
In step 214, will be defined as with this closest to the corresponding mode of operation of the volume emulation value of volumetric(al) standards value
The mode of operation of some detected unit i.Thus, detected unit i mode of operation is defined.
By performing said process repeatedly for each detected unit, it is possible to determine the work of each detected unit
Operation mode.Specifically, after detected unit i mode of operation is determined, it can be directed to and be detected unit i+1, hold again
Row above-mentioned steps 211-214, so as to determine appropriate mode of operation to be detected unit i+1.Quilt is directed to it is understood that working as
When detection unit i+1 performs step 211 again, the current capacities for the electric energy buffer module to be obtained should be consider it is detected
The current capacities of renewal after unit i mode of operation.
As it was previously stated, in above step, after only simulating one " step-length ", the expection capacity of electric energy buffer module becomes
Change, determined therefrom that the mode of operation of each detected unit.It is appreciated that the charging and discharging state of unit is detected in whole work
Make to change in the cycle.Therefore, the mode of operation determined according to step 21 is started working, and can cause electric energy buffer module
Capacity start-up operation a step-length as far as possible close to perfect condition, but do not ensure that within the whole work period not
Generation energy spilling.Therefore, step 22 is also performed after Fig. 1 step 21, based on being buffered to electric energy in the whole work period
The prediction of the volume change of module, adjust the mode of operation of multiple detected units.
Fig. 4 shows to adjust the sub-step of the mode of operation of detected unit, that is, step in Fig. 2 in one embodiment
22 sub-step.As shown in figure 4, in order to adjust the mode of operation of detected unit, first in step 221, simulation electric energy buffering
Volume change of the module within the whole work period；Then in step 222, the volume change based on simulation, it is determined that to quilt
The adjustment operation that the mode of operation of detection unit is carried out.
Specifically, in one embodiment, capacity of the detected unit within the whole work period can be simulated first to become
Change.It is appreciated that when being detected cell discharge, electric energy buffer module absorbs the electric energy of release by interior power network；And tested
When surveying unit charging, the electric energy of storage is released to detected unit by electric energy buffer module by interior power network.Therefore, based on tested
Volume change of the unit within the whole work period is surveyed, capacity of the electric energy buffer module within the whole work period can be simulated
Change, thus perform step 221.
Then, in step 222, based on the volume change of electric energy buffer module, it is determined that the work to being detected unit
The adjustment operation that pattern is carried out.Fig. 5 shows to be seted the tone really according to one embodiment the specific steps of whole operation.
As shown in figure 5, in step 50, the volume change of the electric energy buffer module based on simulation, electric energy buffer module is judged
Whether can overflow.It is appreciated that the core of electric energy buffer module is battery therein, it necessarily operates in specific energy
Measure section.In step 50, simulation capacity and energy section of electric energy buffer module are contrasted.If simulation capacity exceeds the energy
Measure section, then it is assumed that overflowed, be otherwise considered as not overflowing.If do not overflowed, terminal procedure, it is not necessary to adjusted
Whole operation；In the event of overflowing, in step 51, the volume change of the electric energy buffer module based on simulation, the electric energy is determined
There is the time overflowed in buffer module.The time of the spilling may generally be expressed as, relative to the total duration of whole work period
Ratio, or which in the whole work period in stage.
In step 52, determine that the species overflowed occurs in electric energy buffer module.Because electric energy buffer module should work in spy
Fixed energy section, therefore, its energy spilling can be divided into two kinds of situations：Upper spilling and lower spilling, wherein upper spilling refers to
, higher than the situation for the maximum for allowing energy section, lower spilling refers to that electric energy buffers for the energy value of electric energy buffer module
Situation of the energy value of module less than the minimum value for allowing energy section.Therefore, the simulation by judging electric energy buffer module is held
Amount, it is possible to determine the species overflowed.
Then, in step 53, the species of time and spilling based on spilling, it is determined that the adjustment operation carried out.It is actual
In operation, can according to each mode of operation within the whole work period caused energy variation, predefine spilling situation with
Contrast relationship between adjustment operation.When performing step 53, spilling situation is determined based on overflowing the time and overflowing species, then
With reference to predetermined contrast relationship, you can it is determined that the adjustment operation carried out.
Said process is described with reference to specific example.
Fig. 6 A show to be detected volume change of the unit within the whole work period in one example.According to each tested
The volume change of unit is surveyed, the volume change of electric energy buffer module can be simulated.
In Fig. 6 A example, it is detected unit and includes the secondary cell of such as lithium ion battery etc, and be operable with
" filling-putting-to fill " mode of operation and " putting-filling-to put " mode of operation.Fig. 6 A are shown under both mode of operations simultaneously, are detected single
The volume change of member.Because lithium ion battery has the characteristics of heavy-current discharge, low current charge, it can be seen that charge and put
The volume change curve of electricity is not symmetrical.
Further, can see from Fig. 6 A, can be by whole work according to charging process and the transition point of discharge process
Five sub-stages are further subdivided into as the cycle：First stage corresponds to 0 to " t1 " this period in figure, in this time,
Detected unit in " charge and discharge is filled " mode of operation performs charging operations, the detected unit in " putting charge and discharge " mode of operation
Perform discharge operation；Second stage corresponds to " t1 " extremely " t2 " this period in figure, in this time, in " charge and discharge is filled " work
The detected unit of operation mode is performed both by charging operations with the detected unit of " putting charge and discharge " mode of operation；Phase III corresponds to
" t2 " extremely " t3 " this period in figure, in this time, the detected unit in " charge and discharge is filled " mode of operation performs electric discharge
Operation, the detected unit in " putting charge and discharge " mode of operation perform charging operations.Fourth stage correspond to figure in " t3 " extremely "
T4 " period, the 5th stage correspond to the period of " t4 " extremely " t5 " in figure.
By carrying out the division in stage to the whole work period, in step 51, it can be determined that go out overflowing for electric energy buffer module
Which stage gone out to betide.Also, in step 52, determine the energy spilling type of electric energy buffer module.Then, in step 53,
Determine adjustment operation corresponding to the spilling situation.As previously described, it may be predetermined that overflow pair between situation and adjustment operation
According to relation.The determination of the contrast relationship is described below.
If electric energy buffer module the work period first stage there occurs overflow artificial situation, illustrate have in the stage
Excessive energy is discharged to electric energy buffer module from detected unit, therefore needs to reduce the energy release for being detected unit.Due to
In the first phase, the detected unit in " putting charge and discharge " mode of operation can release energy, and be in the tested of " charge and discharge is filled "
Energy can be absorbed by surveying unit, therefore be needed the tune of a detected unit in " putting charge and discharge " mode of operation in this case
Whole is " charge and discharge is filled " mode of operation.
If electric energy buffer module the work period first stage there occurs underflow artificial situation, illustrate quilt in the stage
The energy that detection unit needs obtain from electric energy buffer module is excessive, therefore needs to reduce the energy requirement for being detected unit.Due to
In the first phase, the detected unit in " charge and discharge is filled " can absorb energy, and be in the tested of " putting charge and discharge " mode of operation
Surveying unit can release energy, therefore need to adjust a detected unit in " charge and discharge is filled " mode of operation in this case
For " putting charge and discharge " mode of operation.
If electric energy buffer module the work period second stage there occurs overflow artificial situation, illustrate have in the stage
Excessive energy is discharged to buffer module from detected unit, it is desirable to reduce is detected the energy release of unit.But second
In stage, " putting charge and discharge " pattern is either in, is in " charge and discharge is filled " pattern, be detected unit and absorbing energy, and
Non-release energy.Therefore the appearance of such case necessarily has occurred and that overflow artificial situation because of buffer module in the first phase,
Therefore, required adjustment mode should be consistent with first stage overflow artificial situation in this case, that is, needs one in " putting
The detected unit of charge and discharge " pattern is adjusted to " charge and discharge is filled " mode of operation.
Similarly it can be analyzed for the spilling species in other stages, concrete analysis process that here is omitted, only
Analysis result is shown in fig. 6b., can in step 53 by the spilling situation and the contrast relationship of mode adjustment shown in Fig. 6 B
The adjustment operation that carried out with being readily determined.
Although retouched above in association with the detected unit of " charge and discharge is filled " mode of operation He " putting charge and discharge " mode of operation
State, it will be appreciated that for detected unit that is other kinds of, working in other mode of operations, can also carry out similar
Analysis.For example, the detected unit for working in " fill-put " pattern and " put-fill " pattern, it is only necessary to by its work period
It is divided into three phases.For the detected unit that mode of operation is more complicated, divided stages may be more complicated, overflows
Compareing between situation and adjustment operation also can be more complicated, but its analysis process is similar.
It is appreciated that by performing step 221 and step 222 (step 222 further comprises sub-step 51-53), can
To determine that the adjustment that carry out operates.In one embodiment, can be operated according to the adjustment to adjust detected unit
Mode of operation, then perform following step 23.However, in another embodiment, it may be further contemplated, assuming to carry out so
Adjustment operation after, if new energy spilling can occur, so as to further be adjusted.
Fig. 7 shows to be detected the sub-step of the mode of operation of unit, that is, basis according to the adjustment of another embodiment
The sub-step of the step 22 of another embodiment.In Fig. 7 embodiment, step 221, simulation electric energy buffering are similarly performed first
Volume change of the module within the whole work period；Then in step 222, the volume change based on simulation, it is determined that to quilt
The adjustment operation that the mode of operation of detection unit is carried out.Above-mentioned steps 221 and step 222 are same as shown in Figure 4.
Then, in step 223, it is assumed that above-mentioned adjustment operation is carried out, based on the mode of operation after adjustment, simulation electric energy buffering
The volume change of renewal of the module within the whole work period；Then, in step 224, the volume change based on renewal, it is determined that pair
The renewal adjustment that the mode of operation of the multiple detected unit is carried out.
It is appreciated that the executive mode of above-mentioned steps 223 and step 224 is similar with step 221 and 222 respectively.Also, with
Step 222 is similar, and step 224 can equally perform according to the sub-step shown in Fig. 5.
Then, in step 225, adjustment operation that renewal adjustment that contrast step 224 determines determines with step 222 whether one
Cause.If both are consistent, then in step 226, it is determined that the adjustment operation is carried out, to adjust the Working mould of detected unit
Formula.If both are inconsistent, then in step 227, above-mentioned adjustment are operated into involved detected unit and is arranged to not work.
In fact, renewal adjustment operates inconsistent, it is intended that can cause new energy spilling being adjusted after operation with adjustment,
Therefore, it is necessary to which so that the detected unit being related to is stopped.This is actually it is also assumed that be, by adjusting mode of operation,
Reduce the number for the detected unit for opening work.
The step of Fig. 7, can perform repeatedly, until electric energy buffer module within the whole work period all without overflowing
Go out.At this point it is possible to think, the mode of operation of detected unit is adjusted to perfect condition.
Then, then in step 23 so that be detected unit and start in the detection system according to the mode of operation after adjustment
Work.In the course of the work, it is detected unit and electric energy is input to interior power network in electric discharge, electricity is obtained from interior power network in charging
Energy.In this process, the electric energy on the interior power network is balanced in step 24, control electric energy buffer module.More specifically, in step
Rapid 24, when the electric energy for detecting the inside power network input of detected unit is more than the electric energy that the interior power network needs obtain, control
Make the electric energy buffer module and store unnecessary electric energy；Once detect that the electric energy of the inside power network input of detected unit is less than institute
When stating interior power network needs the electric energy obtained, the electric energy buffer module is controlled to supplement the electric energy lacked to the interior power network.
It is appreciated that being detected the electric energy of the inside power network input of unit, it is substantially equivalent to tested in discharge condition
The electric energy for surveying unit release subtracts electric energy loss, wherein number that the electric energy discharged can be based on the detected unit of electric discharge and
Discharge current determines.And interior power network does not consume electric energy in itself, the electric energy that it needs to obtain is in charged state
It is detected used in unit charging, therefore is substantially equal to, the rechargeable electrical energy needed for detected unit in charging adds electric energy loss.
The electric energy obtained is needed by the electric energy and interior power network that are relatively detected the inside power network input of unit, electric energy can be controlled to buffer mould
Block stores unnecessary electric energy, or the electric energy that release lacks.
In one embodiment, the electric energy that inside power network supplement lacks in step 24 further comprises following steps：Judge
Whether the electric energy stored in electric energy buffer module is more than the electric energy lacked, is more than the feelings of the electric energy lacked in the electric energy of storage
Under condition, by the directly inside power network electric energy supplement of electric energy buffer module, in the case where the electric energy of storage is less than the electric energy lacked, control
Electric energy buffer module processed obtains electric energy from external electrical network, and supplements to interior power network.
Thus, by method sequence described above, the detected work of unit in the detection system has been carried out multistage
The comprehensive control of section.It is, first, based on the capacity of electric energy buffer module, determine the detected list that can be devoted oneself to work
The number and its mode of operation of member；During detected unit carries out detection work, in control electric energy buffer module balance
Electric energy on power network.
It is appreciated that the above method can be performed by master controller in detecting system.
Professional should further appreciate that, each example described with reference to the embodiments described herein
Unit and step, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
The method that is described with reference to the embodiments described herein can use hardware, computing device the step of algorithm
Software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only storage
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of method for controlling secondary cell detecting system, the detecting system includes interior power network, electric energy buffer module, and
Multiple detected units, each it is detected unit and includes secondary cell to be detected, the electric energy buffer module is connected to institute
Stating interior power network and an external electrical network, methods described includes：
It is the multiple detected respective mode of operation of Unit selection based on the current capacities of the electric energy buffer module, its
In under each mode of operation, be detected unit within the whole work period without shelving the continuous work in ground；
Based on the prediction to the volume change of the electric energy buffer module in the whole work period, the multiple detected list is adjusted
The mode of operation of member；
So that the multiple detected unit starts work according to the mode of operation after adjustment in the detecting system, wherein institute
State multiple detected units and electric energy is input to the interior power network in electric discharge, electric energy is obtained from the interior power network in charging；
The electric energy buffer module is controlled to balance the electric energy on the interior power network.
2. according to the method for claim 1, wherein, include for multiple detected respective mode of operations of Unit selection：
Obtain the current capacities of the electric energy buffer module；
Simulate some be detected unit respectively according to multiple mode of operations start working in the case of, electric energy buffer module is right respectively
The multiple volume emulation values answered；
The multiple volume emulation value and volumetric(al) standards value are contrasted, therefrom determines the capacity mould closest to volumetric(al) standards value
Analog values；
By this is defined as closest to the corresponding mode of operation of the volume emulation value of volumetric(al) standards value with this, some is detected list
The mode of operation of member.
3. according to the method for claim 1, wherein, adjusting the mode of operation of the multiple detected unit includes：
Simulate volume change of the electric energy buffer module within the whole work period；
Volume change based on simulation, it is determined that the adjustment carried out to the mode of operation of the multiple detected unit operates.
4. according to the method for claim 3, wherein, adjusting the mode of operation of the multiple detected unit also includes,
It is assumed that carrying out the adjustment operation, based on the mode of operation after adjustment, simulate the electric energy buffer module and entirely working
The volume change of renewal in cycle；
Volume change based on renewal, it is determined that the renewal carried out to the mode of operation of the multiple detected unit adjusts；
In the case where renewal adjustment is different from the adjustment operation, the detected unit being related to is arranged to not work；
In the case of renewal adjustment operates identical with the adjustment, the multiple be detected is adjusted according to the adjustment operation
The mode of operation of unit.
5. according to the method for claim 3, wherein it is determined that should be carried out to the mode of operation of the multiple detected unit
Adjustment operation include：
Volume change based on simulation, determine that the time overflowed occurs in the electric energy buffer module；
Determine that the species overflowed occurs in the electric energy buffer module；
The species of time and spilling based on the spilling, it is determined that the adjustment operation carried out.
6. according to the method for claim 1, wherein balancing the electric energy on the interior power network by the electric energy buffer module
Including：
Once detect the detected unit to the electric energy of the interior power network input more than the electricity that the interior power network needs to obtain
During energy, the electric energy buffer module is controlled to store unnecessary electric energy；
Once detect the detected unit to the electric energy of the interior power network input less than the electricity that the interior power network needs to obtain
During energy, the electric energy buffer module is controlled to supplement the electric energy lacked to the interior power network.
7. according to the method for claim 6, wherein, control what the electric energy buffer module lacked to the interior power network supplement
Electric energy includes：
Whether the electric energy for judging to store in the electric energy buffer module is more than the electric energy lacked,
In the case where the electric energy of storage is less than the electric energy lacked, the electric energy buffer module is controlled from the external electrical network
Electric energy is obtained, and is supplemented to the interior power network.
8. according to the method for claim 1, wherein the secondary cell is lithium ion battery, the mode of operation includes filling
Electricity-electric discharge-charging cycle mode, and electric discharge-charge-discharge cycles mode.
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