CN110426645A - Multichannel charge-discharge parameter calibration method and system - Google Patents
Multichannel charge-discharge parameter calibration method and system Download PDFInfo
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- CN110426645A CN110426645A CN201910776849.0A CN201910776849A CN110426645A CN 110426645 A CN110426645 A CN 110426645A CN 201910776849 A CN201910776849 A CN 201910776849A CN 110426645 A CN110426645 A CN 110426645A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007600 charging Methods 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 230000005611 electricity Effects 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- 230000006870 function Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
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- 230000002159 abnormal effect Effects 0.000 description 1
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- 238000004590 computer program Methods 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The embodiment of the invention discloses a kind of multichannel charge-discharge parameter calibration method and systems.Method includes obtaining to be connected with the electrical parameter in each channel of battery on power panel to be calibrated every prefixed time interval, the size of the current electrical parameter obtained according to each channel determines respective current base point respectively, if the difference of current electrical parameter and current base point is within a preset range, control and measure device switches to corresponding channel to obtain currently practical measured value and switch to next datum mark, if the difference of next electrical parameter and next datum mark is in the preset range, obtain next actual measured value, actual measured value until getting last datum mark, and the functional relation of the charge or discharge between the two neighboring datum mark of corresponding channel is calculated according at least two groups electrical parameter continuously acquired and actual measured value, for carrying out charge-discharge circuit parametric calibration.The efficiency and precision for improving charge-discharge parameter calibration, also improve the utilization rate of measuring device.
Description
Technical field
The present invention relates to new energy field of lithium more particularly to a kind of charge-discharge parameter calibration method and systems.
Background technique
With the deep development of new energy technology, lithium battery applications are constantly widely available, mating to lithium battery correlation
The research of aspect also increasingly deep, mature.In process of production, have one of crucial process is exactly Battery formation to lithium battery,
Battery formation will directly influence the performance quality of battery.Battery formation equipment is that one kind can be to dozens or even hundreds of lithium battery
Constant-current constant-voltage charging, constant-current discharge, the industrial equipment for the series of processes operation such as shelving simultaneously；It has control battery charge and discharge
The features such as electricity, each battery charging and discharging parameter of real-time report, various faults abnormal protection, high-precision, channels independence.It is battery
There is voltage and current required precision in each channel of forming apparatus；The precision of general electric current is in one thousandth, and the equipment of higher precision is very
To the precision for wanting a ten thousandth.Equipment needs to calibrate after a period of use the precision in each channel in factory and client.Tradition
Calibration tool be that single channel is calibrated one by one, a formation device is all tens a channels up to a hundred, causes prover time longer
It is not high with calibration accuracy, keep the charge-discharge circuit parametric calibration of battery relatively complicated.
Summary of the invention
In view of this, the present invention provide it is a kind of raising battery charge-discharge circuit parametric calibration efficiency, calibration accuracy it is more
Channel charge-discharge work parameter calibrating method and system are realized to solve above-mentioned technical problem using following technical scheme.
In a first aspect, a kind of multichannel charge-discharge parameter calibration method, is applied to calibration system, the calibration system includes
Power panel to be calibrated, the power panel to be calibrated are provided with an at least channel, and each channel is equipped with the datum mark of preset quantity, institute
State each channel for connect a battery, all channels are also used to be connected in parallel a measuring device, which comprises
The electrical parameter that each channel of battery is connected on the power panel to be calibrated is obtained every prefixed time interval, and
Determine the current base point in each channel respectively according to the current electrical parameter that each channel obtains；
If the difference of the current electrical parameter of corresponding channel and the current base point is within a preset range, institute is controlled
It states measuring device and connects the corresponding channel to obtain the currently practical measured value of corresponding battery, and the current base point is cut
Shift to next datum mark；
If the difference of next electrical parameter and next datum mark that the corresponding channel obtains is in the preset range
It is interior, next actual measured value that the measuring device obtains the corresponding battery is controlled, is obtained until controlling the measuring device
To actual measured value corresponding to a last datum mark；
The correspondence is calculated according at least two groups electrical parameter continuously acquired and actual measured value of the corresponding channel
The functional relation of the charge or discharge of the battery between each adjacent two datum mark in channel, for logical to the correspondence
Road carries out charge-discharge circuit parametric calibration.
As a further improvement of the above technical scheme, further includes:
If the difference of next electrical parameter and next datum mark that current channel obtains is not up to the preset range, and another
The current electrical parameter that one channel obtains in the preset range, then controls the survey with the difference of corresponding current base point
Amount device switching connects another channel to control the currently practical measured value for the battery for obtaining another channel.
As a further improvement of the above technical scheme, further includes:
Each datum mark of the corresponding channel and the error amount of corresponding actual measured value are calculated, judges each error
Whether value, which is respectively less than, is equal to default error；
If it is not, the corresponding charge-discharge circuit parameter of the datum mark that the error amount is greater than the default error carries out single-point
Calibration.
As a further improvement of the above technical scheme, the datum mark of the preset quantity in each channel is according to big float
Sequence:
Judge whether the battery of current channel enters charging and discharging state by the electrical parameter of acquisition；
If so, setting datum mark in the current channel as current reference point and carrying out correcting current；
Voltage calibration is carried out to the current channel if it is not, then controlling the measuring device.
As a further improvement of the above technical scheme, electrical according at least two groups of the corresponding channel continuously acquired
Parameter and actual measured value calculate the functional relation of the charge or discharge of the battery between each adjacent two datum mark, comprising:
According to the current electrical parameter, the currently practical measured value, next electrical parameter and next reality
Border measured value calculates the slope value and zero point value of function between the two neighboring datum mark；
It is worth the functional relation of the charge or discharge according to the slope value and the zero point.
Second aspect, the present invention also provides a kind of multichannel charge-discharge parameter calibration system, including control panel and to be calibrated
Power panel, the control panel and the power panel to be calibrated communicate to connect, and the power panel to be calibrated is provided with an at least channel,
Each channel is equipped with the datum mark of preset quantity, and each channel is also used in parallel connect for connecting a battery, all channels
Connect a measuring device；
The power panel to be calibrated is used to that the electrical parameter in each channel of battery will to be connected with every prefixed time interval
It reports to the control panel；
The control panel is used to obtain the current electrical parameter in each channel, the current electrically ginseng obtained according to each channel
Several sizes determines the current base point in each channel respectively；
The control panel is also used to judge the current electrical parameter of corresponding channel and the difference of the current base point
Within a preset range, it controls the measuring device and connects the corresponding channel to obtain the currently practical measured value of corresponding battery；
When the difference of the next electrical parameter and next datum mark that judge the corresponding channel acquisition is in the preset range, control
The measuring device obtains next actual measured value of the battery, gets last benchmark until controlling the measuring device
The corresponding actual measured value of point；
The control panel is also used at least two groups electrical parameter continuously acquired and practical survey according to the corresponding channel
The functional relation of the charge or discharge of the battery between magnitude calculation each adjacent two datum mark, for the correspondence
Channel carries out charge-discharge circuit parametric calibration.
As a further improvement of the above technical scheme, further include at least one first electric drive device and measuring device,
Every one first electric drive device is separately connected a channel, and each first electric drive device is in parallel with the measuring device to be connected
It connects.
It as a further improvement of the above technical scheme, further include the second electric drive device of preset quantity, every 1
Two electric drive devices correspond to a datum mark, for choosing corresponding datum mark according to the switching command of the control panel.
As a further improvement of the above technical scheme, further includes:
Host computer is connect by serial ports with the measuring device, and the host computer and the control panel communicate to connect, and is used for
The actual measured value for the battery that the electrical parameter and the measuring device for receiving each channel that the control panel reports are read.
As a further improvement of the above technical scheme, the control panel passes through communication bus and the power panel to be calibrated
Connection, the measuring device are multimeter.
The present invention provides a kind of multichannel charge-discharge parameter calibration method and systems, by the power panel to be calibrated
A upper setting at least channel, each channel are equipped with the datum mark of preset quantity, and each channel owns for connecting a battery
Channel is connected with the electrical property in each channel of battery by obtaining for being connected in parallel a measuring device on the power panel to be calibrated
The size of parameter, the current electrical parameter obtained according to each channel determines respective current base point respectively, will be corresponding logical
After the difference of the current electrical parameter in road and the current base point is met the requirements, controls the measuring device and switch to institute
Corresponding channel is stated to obtain the currently practical measured value of battery, and the current base point is switched into next datum mark, it can be with
Each channel is continuously calibrated.In next electrical parameter that the corresponding channel obtains and next datum mark
After difference is met the requirements, next actual measured value that the measuring device obtains the battery is controlled, until controlling the measurement
Value gets actual measured value corresponding to last datum mark, and according at least two groups electrical parameter and reality continuously acquired
Measured value calculates the functional relation of the charge or discharge of the battery between the two neighboring datum mark of the corresponding channel, to be used for
Charge-discharge circuit parametric calibration is carried out to the corresponding channel, realize multi-channel parallel and the continuous school of multiple datum marks progress is set
The utilization rate of the measuring device can be improved in standard, can also improve the efficiency and precision of the charge-discharge parameter calibration of the battery.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, letter will be made to attached drawing needed in the embodiment below
It singly introduces, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to the present invention
The restriction of protection scope.In various figures, part is similarly comprised using similar number.
Fig. 1 shows the flow chart of multichannel charge-discharge parameter calibration method of the invention；
Fig. 2 shows the first structure block diagrams of multichannel charge-discharge parameter calibration system of the invention；
Fig. 3 shows the second structural block diagram of multichannel charge-discharge parameter calibration system of the invention；
Fig. 4 shows the circuit diagram of multichannel charge-discharge parameter calibration system of the invention；
Fig. 5 shows the battery voltage sampling circuit figure of the embodiment of the present invention；
Fig. 6 shows the battery current sample circuit figure of the embodiment of the present invention.
Main element symbol description:
100- multichannel charge-discharge parameter calibration system；110- control panel；120- power panel to be calibrated；The channel 130-；
140- datum mark；150- battery；160- measuring device；170- host computer；180- the first electric drive device；The second electronics of 190-
Driving element.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
The component of embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, requirement is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
The scope of the present invention of protection, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, this field skill
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Hereinafter, term " includes ", " having " and its cognate that can be used in various embodiments of the present invention are only
It is intended to mean that special characteristic, number, step, operation, the combination of element, component or aforementioned item, and is understood not to first
Exclude the combined presence or increase by one of one or more other features, number, step, operation, element, component or aforementioned item
A or more feature, number, step, operation, element, component or aforementioned item combination a possibility that.
In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply
Relative importance.
Unless otherwise defined, otherwise all terms (including technical terms and scientific terms) used herein have and this
The identical meaning of the various normally understood meanings of embodiment one skilled in the art of invention.The term (such as exists
The term limited in the dictionary generally used) it is to be interpreted as that there is contain identical with situational meaning in the related technical field
Justice and Utopian meaning or meaning too formal will be interpreted as having, unless in various embodiments of the present invention
It is clearly defined.
Refering to fig. 1, the present invention provides a kind of charge-discharge parameter calibration methods, are applied to calibration system, the calibration system
System includes power panel to be calibrated, and the power panel to be calibrated is provided with an at least channel, and each channel is equipped with the base of preset quantity
On schedule, for connecting a battery, all channels are also used to be connected in parallel a measuring device, the method packet in each channel
It includes:
Step S10: the electricity that each channel of battery is connected on the power panel to be calibrated is obtained every prefixed time interval
Property parameter, and determine according to the current electrical parameter that each channel obtains the current base point in each channel respectively；
Step S20: if the difference of the current electrical parameter of corresponding channel and the current base point is in preset range
It is interior, it controls the measuring device and connects the corresponding channel to obtain the currently practical measured value of corresponding battery, and work as by described in
Preceding datum mark switches to next datum mark；
Step S30: if the difference of next electrical parameter and next datum mark that the corresponding channel obtains is described
In preset range, next actual measured value that the measuring device obtains the corresponding battery is controlled, until controlling the measurement
Device gets actual measured value corresponding to last datum mark；
Step S40: it is calculated according at least two groups electrical parameter continuously acquired and actual measured value of the corresponding channel
The functional relation of the charge or discharge of the battery between each adjacent two datum mark of the corresponding channel, for institute
It states corresponding channel and carries out charge-discharge circuit parametric calibration.
The quantity in the channel and the preset quantity of the datum mark are six, and each channel is set there are six benchmark
The battery charge or discharge is given for connecting a battery, by the power panel to be calibrated in point, each channel.Every
In the time interval of 100ms, the electrical parameter that each channel of battery is connected on the power panel to be calibrated, the electrical property are obtained
Parameter can be the voltage or electric current of charging, be also possible to the voltage or electric current of electric discharge.The preset quantity in each channel
Datum mark in magnitude order, judges that the battery of current channel is to enter charging and discharging state by the electrical parameter of acquisition
When, the datum mark in the current channel is set as current reference point and carries out correcting current；Pass through the electrically ginseng of acquisition
Number judges that the battery of current channel is then to control the measuring device when not entering charging and discharging state and carry out to the current channel
Voltage calibration.By taking voltage calibration when lithium battery charges as an example, by the datum mark be set as 0.1V, 1V, 2V, 3V, 4V and
4.8V is arranged successively according to ascending, and each channel is connected in parallel with the measuring device.It is logical what is got for the first time
When voltage in the electrical parameter in road one is 2.1V, the voltage in the channel one got after 100ms is 2.2V, can be determined
The battery for being connected to the channel one is charged state, is 2.2V come really according to the size of the current electrical parameter in the channel one
Settled preceding datum mark is 3V, that is, datum mark four, if the voltage of the datum mark four in the channel one is close to 3V, such as 2.9V and 3V
Difference within a preset range, then controls the measuring device and is connected to the datum mark four in the channel one to obtain the current of battery
Actual measured value, such as 2.98V, later calibrate next datum mark, that is, switch to datum mark five and carry out to datum mark five
Calibration, if the electrical parameter for getting datum mark five be 3.9V within a preset range, so that it may control the measuring device and obtain
The actual measured value 3.98V of the battery, the measuring device are multimeter, and the measuring device gets last datum mark
When corresponding actual measured value, the reality of datum mark four is arrived according to the electrical parameter of datum mark three to datum mark four, datum mark three
The functional relation of the charging of the battery is calculated in border measured value, can to calibration in need channel carry out charge and discharge electricity
Road parametric calibration improves the utilization rate of the measuring device and the efficiency of calibration charge-discharge parameter.
It should be noted that charge and discharge electric calibration is carried out to battery by the way that multiple datum marks are arranged in each channel, according to acquisition
The electrical parameter in each channel of the power panel to be calibrated arrived, can first determine the battery in the channel be charged state or
Discharge condition, corresponding to select voltage reference point or current reference point, the datum mark in each channel can be identical, can also not
Together, as channel one can be voltage reference point, channel two can be current reference point, and the voltage of usual lithium battery is 5V and electric current
For 3A, i.e. the maximum voltage of the charge or discharge of lithium battery is 5V, and the maximum current of charge or discharge is 3A, and multiple benchmark are arranged
Point continuously calibrates the electrical parameter in each stage, the error of the charge-discharge parameter calibration of the battery can be reduced, to mention
The high working performance of the battery, above-mentioned calibration process are calibrated before can be applied to the tooling of lithium battery or battery,
It is also possible to the power panel progress charge-discharge circuit parameter to be calibrated to be calibrated.It is appreciated that battery is according to using the time
Increase, performance can be declined, and the time for the needs that charge is also different, be adjusted by calibrating to battery charging and discharging described to school
The service life of the battery can be improved in quasi- power panel to a certain extent.According to the current electrical parameter, the current reality
Border measured value, next electrical parameter and next actual measured value calculate function between the two neighboring datum mark
Slope value and zero point value are worth the functional relation of the charge or discharge according to the slope value and the zero point.It will be current
Corresponding slope value K1 and zero point value B1 is calculated in electrical parameter and next electrical parameter, by currently practical measured value and next
Corresponding slope value K2 and zero point value B2 is calculated in actual measured value, according at least two groups electrical parameter and reality continuously acquired
Border measured value calculates the functional relation of the charge or discharge of the battery between the two neighboring datum mark of the corresponding channel,
Two groups of electrical parameters and actual measured value are formed into two element equations, charge-discharge circuit parameter can be carried out to the corresponding channel
Calibration.
Further, if the difference of next electrical parameter and next datum mark that current channel obtains is not up to described preset
Range, and another channel obtain current electrical parameter with the difference of corresponding current base point in the preset range, then
It controls the measuring device switching and connects another channel to control the currently practical survey for the battery for obtaining another channel
Magnitude.
When battery access circuit has the output voltage of 1.2V, the battery is connected to channel two, detect it is described to
Power calibration plate charges to the battery, can determine and put three 2V, the voltage of the battery on the basis of corresponding datum mark at this time
It is that 2V needs a period of time of charging by 1.2V variation, the measuring device can be to a certain datum mark of the battery in channel one at this time
Voltage measure, be also possible to measure the electric current of a certain datum mark in the channel one, and by the measurement fill
The actual measured value real-time report of acquisition is set, reported result can be stored in include channel one, channel two, channel three, logical
In the list in road four, channel five and channel six, wherein corresponding six datum marks in each channel, each datum mark are corresponding with electricity
Property parameter, actual measured value and error amount.Actual measured value is typically larger than the electrical parameter of the battery of the power panel to be calibrated,
The calculating corresponding with actual measured value progress of the electrical parameter of the battery is obtained into calibration factor, thus to next electricity is obtained
Property parameter calibrated, improve obtain battery electrical parameter precision.
Further, the error amount for calculating each datum mark with corresponding actual measured value judges that each error amount is
No be respectively less than is equal to default error；
If it is not, the corresponding charge-discharge circuit parameter of the datum mark that the error amount is greater than the default error carries out single-point
Calibration.
It carries out the actual measured value that the measuring device obtains that error amount is calculated with corresponding datum mark, i.e., by institute
It states each datum mark and corresponding actual measured value is compared, judge whether the error amount is less than or equal to default error, when
Judging result be it is yes, then corresponding channel calibration passes through；It, will be described when judging that the error amount is greater than the default error
The corresponding charge-discharge circuit of datum mark that error amount is greater than the default error carries out single-point calibration, i.e., will be more than the default mistake
The corresponding charge-discharge circuit parameter of datum mark of difference is individually calibrated, and includes channel number, operating mode, electricity in the real time data reported
The version number etc. of the corresponding power supply calibration plate of flow valuve, voltage value, error code, datum mark, all benchmark in each channel
It is more than the default error that an error amount, which occurs, in point, then calibrates and fail.It should be noted that when the battery and described to school
When quasi- power panel connects, the electrical parameter and acquisition subsequent time in real time that the battery is connected with power calibration plate is obtained
Electrical parameter is to be charged or discharged come the operating mode for determining corresponding channel, the subsequent time electrical parameter close to
Corresponding datum mark, controls the actual measured value that the measuring device obtains the datum mark of the corresponding channel, the actual measurement
Value is that the voltage or electric current at the battery both ends are read by multimeter, and the battery can be from datum mark one to datum mark six
It is successively calibrated, is also possible to successively be calibrated from datum mark three to datum mark six, the error amount being calculated can
To be multiple.When the error amount is more than the default error, can also in this way may be used with alarm message reminding to staff
To reduce error, the job stability of the battery and the power panel to be calibrated is improved.
Refering to Fig. 2, Fig. 3 and Fig. 4, the present invention also provides a kind of multichannel charge-discharge parameter calibration systems 100, including control
Making sheet 110 and power panel to be calibrated 120, the control panel 110 is communicated to connect with the power panel 120 to be calibrated, described to school
Quasi- power panel 120 is provided with an at least channel 130, and each channel 130 is equipped with the datum mark 140 of preset quantity, described each logical
For connecting a battery 150, all channels 130 are also used to be connected in parallel a measuring device 160 in road；
The power panel to be calibrated 120 is used to that the electricity in each channel 130 of battery 150 will to be connected with every prefixed time interval
Property reporting parameters are to the control panel 110；
The control panel 110 is used to obtain the current electrical parameter in each channel 130, is obtained according to each channel 130
Current electrical parameter determines the current base point in each channel respectively；
The control panel 110 is also used to judge the current electrical parameter of corresponding channel and the difference of the current base point
Value within a preset range, controls the measuring device 160 and connects the corresponding channel to obtain the currently practical of corresponding battery 150
Measured value；When the difference of the next electrical parameter and next datum mark that judge the corresponding channel acquisition is in the preset range
When, next actual measured value that the measuring device 160 obtains the battery 150 is controlled, until controlling the measuring device 160
Get actual measured value corresponding to last datum mark；
The control panel 110 is also used at least two groups electrical parameter continuously acquired and reality according to the corresponding channel
Measured value calculates the functional relation of the charge or discharge of the battery 150 between two neighboring datum mark 140, for institute
It states corresponding channel 130 and carries out charge-discharge circuit parametric calibration.
The multichannel charge-discharge parameter calibration system 100 further includes host computer 170,180 and of the first electric drive device
Second electric drive device 190, the host computer 170 are connect by serial ports with the measuring device 160, the host computer 170
It is communicated to connect with the control panel 110, for receiving the electrical parameter in each channel 130 that the control panel 110 reports and described
The actual measured value for the battery 150 that measuring device 160 is read.The host computer 170 passes through ICP/IP protocol and the control
Making sheet 110 connects, and the measuring device 160 can be voltmeter, ammeter or multimeter, and the preferably described measuring device 160 is
Multimeter, the host computer 170 are connect by serial communication mode with the multimeter, the control panel 110 and the general-purpose
Table connection, the first electric drive device 180 are connected in parallel with the measuring device 160, are used for the measuring device 160
It is connected to the corresponding channel 130.The second electric drive device 190 and the battery 150 in each channel are connected in parallel,
For choosing corresponding datum mark 140 according to the switching command of the control panel 110.First electric drive device, 180 He
The second electric drive device 190 can be thyristor, transistor or relay, in order to make it easy to understand, it is preferred that described first
Electric drive device 180 and the second electric drive device 190 are relay, 180 He of the first electric drive device
The quantity in the channel is identical, and the second electric drive device 190 is identical with the quantity of the datum mark 140.
The STM32F427 chip of 32 Cortex M4 kernels of ARM of ST company is provided on the control panel 110, it is main
Frequency is up to 180MHZ, carries ucos ii real time operating system and LwIP network protocol stack, sets on the power panel 120 to be calibrated
It is equipped with ATA6660 chip.The power panel to be calibrated 120 further includes voltage-stablizer, communication interface and impulse circuit, the pressure stabilizing
Device, the communication interface and the impulse circuit are connect with the control panel, and voltage-stablizer is a kind of energy adjust automatically output voltage
Power supply circuit or power supply unit, effect be will fluctuate it is larger and be not achieved electrical equipment requirement supply voltage stablize at it
Range of set value in, so that various circuits or electrical equipment is worked normally under rated operational voltage.Communication interface is mainly
LAN network interface be used for connecting communication bus, impulse circuit be specifically used to generate electric pulse and electric pulse amplified, convert and
The circuit of shaping is used as trigger signal, improves the functional reliability of the multichannel charge-discharge parameter calibration system 100.
The multichannel charge-discharge parameter calibration system 100 is applied to the voltage of lithium battery, the electric current of charging and electric discharge
Electric current is calibrated, and the operating mode in each channel may be the same or different, i.e., the described battery can be charging shape
State is also possible to discharge condition, correspondingly, selects suitable datum mark.When the control panel carries out charging voltage parametric calibration
When, voltage reference point is selected, detailed process when voltage calibration is carried out are as follows:
1) control panel 110 receives " entering calibration mode " order that the host computer 170 issues, when the control panel
110 be in normal operating condition when, the host computer 170 " coming into calibration mode " can be replied；
2) control panel 110 receives " enabling first reference voltage " order that the host computer 170 issues, the control
Making sheet 110 can go to control the I/O port of chip after receiving order, be closed corresponding relay on the power panel 120 to be calibrated,
The voltage of power panel 120 to be calibrated described in 110 real-time report of control panel, the host computer 170 acquire corresponding sampling
Numerical value；
3) host computer 170 can then issue " enabled multimeter " order, and the control panel 110 is controlled after receiving order
Coremaking piece I/O port is closed corresponding relay on the power panel 120 to be calibrated, and the host computer 170 can by serial ports at this time
To get the voltage value of the battery 150 of the multimeter measurement；
4) after the sampled data that first voltage datum mark needs obtains, the host computer 170, which can issue, " forbids relay
Device " is ordered to the control panel 110, which includes the channel number, relay number, relay status that open the relay
Etc. information；
5) aforesaid operations are repeated, second datum mark voltage sample data is obtained, " enabled second point reference voltage " -> close
Closing corresponding relay -> acquisition sampled data -> " enabled multimeter " -> closed pair answers relay -> acquisition multimeter to measure
Data.
Actual measured value corresponding to last voltage reference point is got until controlling the multimeter, according to continuously obtaining
At least two groups electrical parameter taken and actual measured value calculate the electricity between the two neighboring datum mark of the corresponding channel
The functional relation of the charge or discharge in pond 150, the electrical parameter are that the control panel 110 accesses the battery 150 and described
Sampled data in the circuit of power panel 120 to be calibrated, the sampled data obtains digital voltage by analog-to-digital conversion, according to two
The sampled data of a datum mark calculates K value and B value of the first voltage datum mark to this section of voltage of second voltage datum mark, K
Value is slope value, and B value is zero point value, and so on, after the sampled data for obtaining tertiary voltage datum mark voltage, so that it may count
Second voltage datum mark is calculated to the K value and B value of this section of voltage of tertiary voltage datum mark, is used with the control panel 110 oblique
The two o'clock of rate value and zero point value is calibrated to calculate battery charging and discharging voltage coefficient, is repeated the above steps, is obtained the last one voltage
The voltage value of datum mark, the host computer 170 count the actual measured value that the multimeter measures with corresponding datum mark
Calculation obtains error amount, and when the error amount is no more than the default error, calibration passes through, otherwise fails, and passes through rear institute in calibration
It states host computer 170 and issues " setting KB value " order to the control panel 110, the control panel 110 judges after receiving order
The parameter is to belong to the K value and B value of which section voltage.As shown in figure 5, Fig. 6 is battery voltage sampling circuit, amplification factor is
0.294, sample the circuit rated output voltage in the channel 130: 5V*0.294+1.65=3.12V, circuit maximum sampling electricity
Pressure: the voltage reference of 1.65/0.294=5.6V, analog-to-digital conversion AD be 3300mv, initial K value:
Coefficient amplifies 1000 times.Therefore initial K value is 274, improves the calibration accuracy of the charging/discharging voltage of the battery 150.
In addition, the continuous calibration including charging current and discharge current is continuously calibrated when carrying out electric current, to charging current
For continuous calibration, the detailed process of correcting current is carried out are as follows:
A) control panel 110 receives " entering calibration mode " order that the host computer 170 issues, when the control panel
110 be in normal operating condition when, the host computer 170 " coming into calibration mode " can be replied；
B) control panel 110 receives the host computer and issues " constant-current constant-voltage charging 0.2A " order, the control panel 110
It receives the order and parses which channel needs to charge, the electric current for the needs that charge is how many, when the electric current of charging is 0.2A, then
Control can be gone to need the power panel 120 to be calibrated calibrated with 0.2A current work by CAN communication transmitting order to lower levels；
C) after the host computer 170 reads the current channel sampled data that the control panel 110 is sent, " enabled ten thousand are issued
With table " it orders, the control panel 110 will be closed corresponding relay on the power panel to be calibrated 120 after receiving order, so
The host computer 170 obtains the sampled data of the first current reference point and the actual measured value of the multimeter afterwards；
D) aforesaid operations are repeated, the sampled data of the second current reference point is obtained, the control panel 110 receives " constant current perseverance
Pressure charging 1A " orders -> reports sampled data to host computer -> reception " enabled multimeter " order -> enabled corresponding relay.
According to the sampled data and actual measured value of two current reference points, the first point 0.2A electric current is calculated to second point
The K value and B value of this section of electric current of 1A electric current, and so on, it obtains thirdly after the sampled data of electric current, so that it may calculate the
K value and B value of 2 electric currents to thirdly this section of electric current of electric current.The host computer 170 opens the control panel 110 to one piece
When six channels 130 of the power panel to be calibrated 120 are continuously calibrated, the control panel 110 can be according to the work in each channel 130
Operation mode goes to control the opening and closing of corresponding relay, and the control panel 110 handles what the power panel to be calibrated 120 reported in real time
Real time data is handled, and is then reported to the host computer 170 and is judged, the control panel 110 and the power panel to be calibrated
120 carry out CAN communication, the voltage in the 120 real-time report channel 130 of power panel to be calibrated.Electric current, status information to the control
Making sheet 110.As shown in fig. 6, Fig. 6 be battery current sample circuit, amplification factor: 13.5, current divider resistance value: 30mR, sampling electricity
Road rated output voltage: 13.5*3A*30mR+1650mV=2.86V, circuit maximum sample rate current: 4.07A, analog-to-digital conversion AD base
Standard be 3300mV, initial K value:Coefficient amplifies 100 times, then initial K value is 199, improves institute
State the calibration accuracy of the charging and discharging currents of battery 150.
It should be noted that discharge current calibration is identical as above-mentioned charging current calibration operation, by " constant-current constant-voltage charging "
Mode changes " constant-current discharge " mode into, and above-mentioned voltage or electric current, which are continuously calibrated, error is occurred then determination does not pass through greatly, then needs list
Solely to not calibrated by the corresponding charge-discharge circuit parameter of datum mark calibrated, the process of single-point calibration and above-mentioned voltage school
Quasi- process is identical, and details are not described herein again.
The present invention provides a kind of multichannel charge-discharge parameter calibration method and systems, by the power panel to be calibrated
An at least channel 130 is set on 120, and each channel 130 is equipped with the datum mark 140 of preset quantity, and each channel is for connecting
A battery 150 is connect, all channels 130 are for being connected in parallel a measuring device 160, by obtaining the power panel 120 to be calibrated
On be connected with battery 150 each channel 130 electrical parameter, according to the size point for the current electrical parameter that each channel obtains
Respective current base point is not determined, by the difference of the current electrical parameter of corresponding channel 130 and the current base point
After meeting the requirements, controls the measuring device 160 and switch to the corresponding channel to obtain the currently practical measurement of battery 150
Value, and the current base point is switched into next datum mark, each channel can continuously be calibrated.Described right
After the difference of the next electrical parameter and next datum mark of answering channel to obtain is met the requirements, the measuring device 160 is controlled
The next actual measured value for obtaining the battery 150, until controlling the measuring device 160, to get last datum mark institute right
The actual measured value answered, and the corresponding channel is calculated according at least two groups electrical parameter and actual measured value that continuously acquire
The functional relation of the charge or discharge of battery 150 between two neighboring datum mark, for being filled to the corresponding channel
Discharge circuit parametric calibration realizes multi-channel parallel and multiple datum marks 140 is arranged and continuously calibrated, the survey can be improved
The utilization rate for measuring device 160 can also improve the efficiency and precision of the charge-discharge parameter calibration of the battery 150.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and structure in attached drawing
Figure shows the system frame in the cards of the device of multiple embodiments according to the present invention, method and computer program product
Structure, function and operation.In this regard, each box in flowchart or block diagram can represent a module, section or code
A part, a part of the module, section or code includes one or more for implementing the specified logical function
Executable instruction.It should also be noted that function marked in the box can also be to be different from the implementation as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes
It can execute in the opposite order, this depends on the function involved.It is also noted that in structure chart and/or flow chart
The combination of each box and the box in structure chart and/or flow chart, can function or movement as defined in executing it is dedicated
Hardware based system realize, or can realize using a combination of dedicated hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention can integrate one independence of formation together
Part, be also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be intelligence
Can mobile phone, personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory),
Random access memory (RAM, Random Access Memory), magnetic or disk etc. be various to can store program code
Medium.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.
Claims (10)
1. a kind of multichannel charge-discharge parameter calibration method, which is characterized in that be applied to calibration system, the calibration system includes
Power panel to be calibrated, the power panel to be calibrated are provided with an at least channel, and each channel is equipped with the datum mark of preset quantity, institute
State each channel for connect a battery, all channels are also used to be connected in parallel a measuring device, which comprises
Obtain the electrical parameter that each channel of battery is connected on the power panel to be calibrated every prefixed time interval, and according to
The current electrical parameter that each channel obtains determines the current base point in each channel respectively；
If the difference of the current electrical parameter of corresponding channel and the current base point within a preset range, controls the survey
Amount device connects the corresponding channel to obtain the currently practical measured value of corresponding battery, and the current base point is switched to
Next datum mark；
If the difference of next electrical parameter and next datum mark that the corresponding channel obtains is in the preset range, control
Next actual measured value that the measuring device obtains the corresponding battery is made, is obtained to the end until controlling the measuring device
Actual measured value corresponding to one datum mark；
The corresponding channel is calculated according at least two groups electrical parameter continuously acquired and actual measured value of the corresponding channel
Each adjacent two datum mark between the battery charge or discharge functional relation, with for the corresponding channel into
Row charge-discharge circuit parametric calibration.
2. the method according to claim 1, wherein further include:
If the difference of next electrical parameter and next datum mark that current channel obtains is not up to the preset range, and another logical
The current electrical parameter that road obtains in the preset range, then controls the measurement dress with the difference of corresponding current base point
It sets switching and connects another channel to control the currently practical measured value for the battery for obtaining another channel.
3. the method according to claim 1, wherein further include:
Each datum mark of the corresponding channel and the error amount of corresponding actual measured value are calculated, judges that each error amount is
No be respectively less than is equal to default error；
If it is not, the corresponding charge-discharge circuit parameter of the datum mark that the error amount is greater than the default error carries out single-point school
It is quasi-.
4. the method according to claim 1, wherein the datum mark of the preset quantity in each channel is according to big
Small sequence:
Judge whether the battery of current channel enters charging and discharging state by the electrical parameter of acquisition；
If so, setting datum mark in the current channel as current reference point and carrying out correcting current；
Voltage calibration is carried out to the current channel if it is not, then controlling the measuring device.
5. the method according to claim 1, wherein according at least two groups of the corresponding channel continuously acquired
Electrical parameter and actual measured value calculate the functional relation of the charge or discharge of the battery between each adjacent two datum mark, packet
It includes:
According to the current electrical parameter, the currently practical measured value, next electrical parameter and next practical survey
The slope value of function and zero point value between two neighboring datum mark described in magnitude calculation；
It is worth the functional relation of the charge or discharge according to the slope value and the zero point.
6. a kind of multichannel charge-discharge parameter calibration system, which is characterized in that including control panel and power panel to be calibrated, the control
Making sheet and the power panel to be calibrated communicate to connect, and the power panel to be calibrated is provided with an at least channel, and each channel is equipped with
The datum mark of preset quantity, for connecting a battery, all channels are also used to be connected in parallel a measuring device in each channel；
The power panel to be calibrated is for reporting to the electrical parameter for being connected with each channel of battery every prefixed time interval
The control panel；
The control panel is used to obtain the current electrical parameter in each channel, the current electrical parameter point obtained according to each channel
The current base point in each channel is not determined；
The control panel is also used to judge the current electrical parameter of corresponding channel with the difference of the current base point pre-
If in range, controlling the measuring device and connecting the corresponding channel to obtain the currently practical measured value of corresponding battery；When sentencing
When the difference of next electrical parameter and next datum mark that the corresponding channel of breaking obtains is in the preset range, described in control
Measuring device obtains next actual measured value of the battery, gets last datum mark institute until controlling the measuring device
Corresponding actual measured value；
The control panel is also used at least two groups electrical parameter continuously acquired and actual measured value according to the corresponding channel
The functional relation of the charge or discharge of the battery between each adjacent two datum mark is calculated, for the corresponding channel
Carry out charge-discharge circuit parametric calibration.
7. system according to claim 6, which is characterized in that further include at least one first electric drive device and measurement dress
It sets, every one first electric drive device is separately connected a channel, and each first electric drive device is in parallel with the measuring device
Connection.
8. system according to claim 6, which is characterized in that further include the second electric drive device of preset quantity, often
One second electric drive device corresponds to a datum mark, for choosing corresponding benchmark according to the switching command of the control panel
Point.
9. system according to claim 6, which is characterized in that further include:
Host computer is connect by serial ports with the measuring device, and the host computer and the control panel communicate to connect, for receiving
The actual measured value for the battery that the electrical parameter in each channel that the control panel reports and the measuring device are read.
10. system according to claim 6, which is characterized in that the control panel by communication bus with it is described to be calibrated
Power panel connection, the measuring device are multimeter.
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