CN104076291B - The device and method of the good and bad state of battery is assessed in a kind of quick test - Google Patents
The device and method of the good and bad state of battery is assessed in a kind of quick test Download PDFInfo
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- CN104076291B CN104076291B CN201410262062.XA CN201410262062A CN104076291B CN 104076291 B CN104076291 B CN 104076291B CN 201410262062 A CN201410262062 A CN 201410262062A CN 104076291 B CN104076291 B CN 104076291B
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Abstract
The present invention relates to the device and method that the good and bad state of battery is assessed in a kind of quick test, the battery is the battery pack being in series by more piece cell, and the battery pack is further divided into multiple battery groups being in series by adjacent cell；The device includes main control module and the multiple battery detecting modules communicated therewith；Each battery detecting module is connected to a battery group in battery pack, obtains the measured value of the performance parameter of each battery group；The main control module is used to the normal value of the measured value of the performance parameter of each battery group performance parameter corresponding with the cell quantity of the battery group being compared, it is more than its normal value in the measured value of Ohmic resistance, and the measured value of polarization capacity is when being less than its normal value, judge that the battery group has abnormal battery.The present invention have detection speed it is fast, it is with low cost the characteristics of, can apply to the battery detection of the occasions such as electricity substation, communication base station, computer room UPS.
Description
Technical field
The present invention relates to battery detecting field, the good and bad state of battery is assessed more specifically to a kind of quick test
Device and method.
Background technology
At present, power system transformer substation operation power, communication base station and electric power, computer room UPS (uninterrupted power source), and energy storage
Power station, photovoltaic plant, communication base station, electric automobile etc. all largely using tens of battery packs for being connected into of section single-unit batteries as
Working power or back-up source.Because battery management personnel typically manage tens, hundreds of or even thousands of Battery packs, place simultaneously
Also more disperse, therefore whether urgently need means that are a kind of quick and handling to understand battery pack normal and electric to problem
Pond is substantially positioned, and battery is detected with handheld instrument when finding that battery pack is abnormal, then to scene, it is determined that specifically
Which batteries is problematic, problem battery is changed in time, it is ensured that backup power system is safe and reliable.
At present, battery user understands battery status, mainly there is following several ways：
1) battery instrumentation is used, every batteries are tested using manual method；But this method has the following disadvantages：
Often voltage is higher for battery pack, and detection work has danger, and needs to expend substantial amounts of man power and material, and efficiency is low, into
This height, data promptness is poor.
2) every batteries are monitored on-line using battery detection equipment, battery detection equipment typically connects with communication
Mouthful, battery detection data can be shown on the spot, and the monitor supervision platform of distal end, user and manager can also be sent to by network
The working condition grasped per batteries can be realized；But the main method has the disadvantage that：Battery detection equipment price is expensive, and
Need to lay substantial amounts of p-wire, construction is complicated, and maintenance workload is big, and cost is high.
The content of the invention
The technical problem to be solved in the present invention is, every batteries are monitored for existing ice storing time technology and led
The high defect of cost is caused battery pack is divided into the quick test that multiple battery groups are detected respectively to assess electric power storage there is provided a kind of
The device and method of pond quality state.
The technical solution adopted for the present invention to solve the technical problems is：It is good and bad that battery is assessed in a kind of quick test of construction
The device of state, the battery is the battery pack being in series by more piece cell, and the battery pack is further divided into many
The individual battery group being in series by adjacent cell；Described device includes main control module and the multiple electricity communicated therewith
Pond detection module；
Each battery detecting module is connected to a battery group in battery pack, for being detected to the battery group,
Obtain the measured value of the performance parameter of each battery group, Ohmic resistance and pole of the performance parameter at least including battery group
Change electric capacity；Each battery detecting module has the first p-wire and the second p-wire, first p-wire and the second p-wire
It is respectively connecting to the positive pole of the first batteries of corresponding battery group and the negative pole of final section battery；
The main control module is used for the measured value for obtaining the performance parameter of each battery group, and by itself and the battery group
The normal value of the corresponding performance parameter of cell quantity be compared, be more than its normal value in the measured value of Ohmic resistance,
And the measured value of polarization capacity is when being less than its normal value, judge that the battery group has abnormal battery；
The Ohmic resistance normal value that the normal value of the Ohmic resistance of battery group is equal to cell is multiplied by battery group
Cell quantity；The polarization capacity normal value divided by battery that the normal value of the polarization capacity of battery group is equal to cell are small
The cell quantity of group.
In the device of the good and bad state of battery is assessed according to quick test of the present invention, the performance parameter is also wrapped
The electromotive force and polarization resistance of battery group are included, the main control module is also by the measured value of electromotive force and the measured value of polarization resistance
Respectively compared with corresponding normal value, to further confirm that the battery group whether there is abnormal battery.
In the device of the good and bad state of battery is assessed according to quick test of the present invention, the first p-wire bag
First voltage line and the first electric current line are included, second p-wire includes second voltage line and the second electric current line；
The battery detecting module further comprises：Discharge cell, measuring unit and control unit；The discharge cell exists
Under the control of described control unit, battery group is set to be put through the first electric current line and the second electric current line to the discharge cell
Electricity, to produce the current signal of multiple frequencies；The measuring unit obtains battery through the first electric current line and the second electric current line
Corresponding current signal under each frequency of group, and it is every by the first voltage line and second voltage line acquisition battery group
Corresponding voltage signal under individual frequency；Described control unit is connected with the measuring unit and discharge cell, for according to described
Corresponding current signal and voltage signal under each frequency, and the corresponding circuit of cell quantity that the battery group includes
Model, calculates the measured value of electromotive force, Ohmic resistance, polarization resistance and the polarization capacity of the battery group.
In the device of the good and bad state of battery is assessed according to quick test of the present invention, the main control module is used
The normal value of the corresponding performance parameter of cell quantity of battery group be specially：The normal value of the electromotive force of battery group
Electromotive force normal value equal to cell is multiplied by the cell quantity of battery group；The polarization resistance of battery group it is normal
Value is multiplied by the cell quantity of battery group equal to the polarization resistance normal value of cell；.
In the device of the good and bad state of battery is assessed according to quick test of the present invention, it is preferable that the battery
Component is 2 to 4 battery groups.
Present invention also offers a kind of method that the good and bad state of battery is assessed in quick test, the battery is by more piece
The battery pack that cell is in series, methods described includes：
Battery detection step：The battery pack is divided into multiple battery groups being in series by adjacent cell,
Pass through the of the first p-wire of the positive pole of the first batteries for being connected respectively to battery group and the negative pole of final section battery
Two p-wires are detected to each battery group, obtain the measured value of the performance parameter of each battery group, the performance ginseng
Number at least includes the Ohmic resistance and polarization capacity of battery group；
Judgment step：By the measured value of the performance parameter of each battery group and the cell number of the battery group
The normal value for measuring corresponding performance parameter is compared, and is more than its normal value, and polarization capacity in the measured value of Ohmic resistance
When measured value is less than its normal value, judge that the battery group has abnormal battery.
In the method for the good and bad state of battery is assessed according to quick test of the present invention, the performance parameter is also wrapped
Include in the electromotive force and polarization resistance of battery group, the judgment step also by the measurement of the measured value of electromotive force and polarization resistance
Value is respectively compared with corresponding normal value, to further confirm that the battery group whether there is abnormal battery；
The Ohmic resistance normal value that the normal value of the Ohmic resistance of battery group is equal to cell is multiplied by battery group
Cell quantity；The polarization capacity normal value divided by battery that the normal value of the polarization capacity of battery group is equal to cell are small
The cell quantity of group.
In the method for the good and bad state of battery is assessed according to quick test of the present invention, the battery detection step
Specially：By the discharge cell for controlling to be connected with battery group, battery group is set to be discharged to connected discharge cell, and produce
The current signal of multiple frequencies；Obtain corresponding current signal and voltage signal under each frequency of battery group；According to described every
Corresponding current signal and voltage signal under individual frequency, and the corresponding circuit mould of cell quantity that the battery group includes
Type, calculates the measured value of electromotive force, Ohmic resistance, polarization resistance and the polarization capacity of the battery group.
In the method for the good and bad state of battery is assessed according to quick test of the present invention, the list of the battery group
The normal value of the corresponding performance parameter of body number of batteries is specially：The normal value of the electromotive force of battery group is equal to cell
Electromotive force normal value is multiplied by the cell quantity of battery group；The normal value of the polarization resistance of battery group is equal to cell
Polarization resistance normal value be multiplied by the cell quantity of battery group.
In the method for the good and bad state of battery is assessed according to quick test of the present invention, it is preferable that the battery
The battery pack is divided into 2 to 4 battery groups in detecting step.
Implement the apparatus and method that the good and bad state of battery is assessed in the quick test of the present invention, have the advantages that：
Battery pack to be tested is divided into multiple battery groups by the present invention, and that tests each battery group respectively includes battery performance ginseng
Number, is compared by the normal value of performance parameter corresponding with the cell quantity of the battery group, judges each battery
Whether group is normal；The device and method is with low cost, can quickly determine whether battery pack is normal, and determine problem battery
Approximate location, can apply to the battery detection of the occasions such as electricity substation, communication base station, computer room UPS.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the schematic diagram for the device that the good and bad state of battery is assessed according to the quick test of the preferred embodiment of the present invention；
Fig. 2 is the equivalent circuit diagram according to each single battery of battery group in the preferred embodiment of the present invention；
Fig. 3 is total equivalent circuit diagram according to battery group in the preferred embodiment of the present invention；
Fig. 4 is battery detecting in the device for assess the good and bad state of battery according to the quick test of the preferred embodiment of the present invention
The schematic diagram of module；
Fig. 5 is the flow for the method that the good and bad state of battery is assessed according to the quick test of the preferred embodiments of the present invention
Figure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.
Referring to Fig. 1, being the device according to the good and bad state of the quick test of preferred embodiment of the present invention assessment battery
Schematic diagram.As shown in figure 1, the battery that the device of the good and bad state of battery is detected is assessed in the quick test that the embodiment is provided
To press the cell for being 2V to be sequentially connected in series the battery pack into 48V by 24 economize on electricitys.
Battery pack is further divided into multiple battery groups by being unique in that for the present invention, and each battery group is distinguished
Detected, to obtain the measured value of each battery group performance parameter, then by the measured value of these performance parameters and the battery
The normal value of the corresponding performance parameter of cell quantity of group is compared, to judge the battery group with the presence or absence of abnormal
Battery.Wherein, each battery group cell adjacent in battery pack is in series.Preferably, 2 to 4 can be divided into
Battery group.For example in Fig. 1 battery pack is divided into 4 battery groups, 6 section cells are contained in each battery group.Such as
First battery group 100-1, the second battery group 100-2, the 3rd battery group 100-3 and the 4th battery group 100-4.
The device that the good and bad state of battery is assessed in the quick test of the present invention includes main control module 210 and communicated therewith
Multiple battery detecting modules.The quantity of the battery detecting module is identical with the quantity of the battery group of foregoing division, such as in this reality
Apply and 4 battery detecting modules are employed in example 4 battery groups are detected respectively.This four battery detecting modules are respectively
First battery detecting module 220-1, the second battery detecting module 220-2, the 3rd battery detecting module 220-3 and the inspection of the 4th battery
Module 220-4 is surveyed, it connects one to one with the first battery group 100-1 to the 4th battery group 100-4 respectively.
Each battery detecting module obtains each for being detected to the battery group for being connected to the battery detecting module
The measured value of the performance parameter of battery group, the performance parameter at least includes the Ohmic resistance and polarization capacity of battery group.
Main control module 210 and each battery detecting module communication, obtain the measured value of the performance parameter of each battery group,
And be compared the normal value of its performance parameter corresponding with the cell quantity n of the battery group, in Ohmic resistance
Measured valueMore than its normal valueAnd the measured value C of polarization capacitype' it is less than its normal value CpeWhen, judge that the battery is small
There is abnormal battery in group.Main control module 210 can be led to using wired, wireless or carrier system and each battery detecting module
Letter.
Fig. 2 and Fig. 3 are please referred to, is respectively according to each single battery of battery group in the preferred embodiment of the present invention
Equivalent circuit diagram, and battery group total equivalent circuit diagram.As shown in Figures 2 and 3, under normal circumstances, in battery group
The electromotive force E of each section cell1~E6, Ohmic resistancePolarization resistance Rp1~Rp6And polarization capacity Cp1~
Cp6Numerical value be close, the now normal value E of the electromotive force of the battery groupeEqual to the electromotive force normal value E of cell
It is multiplied by cell the quantity n, i.e. E of battery groupe=E × n.The normal value of the Ohmic resistance of battery groupEqual to monomer
The Ohmic resistance normal value R of batteryΩThe cell quantity n of battery group is multiplied by, i.e.,The polarization of battery group
The normal value R of resistancepeEqual to the polarization resistance normal value R of cellpIt is multiplied by cell the quantity n, i.e. R of battery grouppe
=Rp×n.The normal value C of the polarization capacity of battery grouppeEqual to the polarization capacity normal value C of cellpDivided by battery is small
Cell the quantity n, i.e. R of grouppe=Cp÷n.For example, the first battery group 100-1 includes 6 section cells, therefore
The normal value of one battery group 100-1 performance parameter for the battery group the corresponding performance parameter of cell quantity just
Constant value, i.e. cell quantity n=6, are the normal value of the corresponding performance parameter of 6 section cells.
With the extension of service time of battery, the actual capacity of battery can constantly reduce, battery capacity reduce degree with
The many factors such as environment temperature, discharge time, depth of discharge, the impurity of inside battery are relevant.The battery of off-capacity (is called
Battery afterwards) the numerical value of electromotive force be equally likely to or less than normal value, the numerical value of Ohmic resistance is more than normal value, polarization resistance
Numerical value is more than normal value, and the numerical value of polarization capacity is less than normal value.Therefore, should when some battery group has behindhand battery
The measured value E of the electromotive force of battery groupe' be equally likely to or electromotive force less than the battery group normal value Ee, Ohmic resistance
Measured valueMore than the normal value of Ohmic resistanceThe measured value R of polarization resistancepe' it is more than the normal value of polarization resistance
Rpe, the measured value C of polarization capacitype' it is less than the normal value C of polarization capacitype.Therefore, preferably exist in the present inventionAnd
Cpe' ＜ CpeWhen, judge that the battery group has abnormal battery, such as foregoing behindhand battery.
In a preferred embodiment of the invention, the performance parameter of battery detecting module detection can also include battery group
Electromotive force and polarization resistance.Main control module 210 is also by the measured value E of electromotive forcee' and polarization resistance measured value Rpe' respectively with
Corresponding normal value is compared, to further confirm that battery group with the presence or absence of abnormal.For example, the polarization of battery group in Fig. 1
The measured value R of resistancepe' it is more than the normal value R of the corresponding polarization resistance of 6 section cellspe, the survey of the electromotive force of battery group
Value Ee' it is less than the normal value E of the corresponding electromotive force of 6 section cellseWhen, i.e. Rpe>’Rpe, Ee' ＜ EeWhen further confirm that this
There is abnormal battery in battery group.
Referring to Fig. 4, in the device according to the good and bad state of the quick test of preferred embodiment of the present invention assessment battery
The schematic diagram of battery detecting module.Each battery detecting module has the first p-wire and the second p-wire, divides as shown in fig. 1
The positive pole of the first batteries of corresponding battery group and the negative pole of final section battery are not connected to.Wherein, the first p-wire
Including first voltage line and the first electric current line, the second p-wire includes second voltage line and the second electric current line, the first electric current line, every
Two electric current lines also serve as power line, and power supply is provided for battery detecting module.As shown in figure 4, the battery detecting that the embodiment is provided
Module 220 further comprises：Discharge cell 221, measuring unit 222 and control unit 223.
Discharge cell 221 is connected with control unit 223, under the control of control unit 223, makes battery group through the first electricity
Streamline and the second electric current line discharge to discharge cell 221, to produce the current signal of multiple frequencies.Due to ohm of battery group
Resistance, polarization resistance, the presence of polarization capacity, the negative pole of positive level, final section battery in the first batteries of battery group
Between will produce, but amplitude with phase different voltage signal identical with current signal frequency.
Measuring unit 222 obtains corresponding electric current under each frequency of battery group through the first electric current line and the second electric current line and believed
Number, while obtaining corresponding voltage signal under each frequency of battery group by first voltage line and second voltage line.
Control unit 223 is connected with measuring unit 222 and discharge cell 221, receives each frequency that measuring unit 222 is measured
Corresponding current signal and voltage signal under rate, and the cell quantity correspondence that the battery group according to Fig. 3 includes
Circuit model, calculate the measured value E of the electromotive force of the battery groupe', the measured value of Ohmic resistancePolarization resistance
Measured value Rpe' and polarization capacity measured value Cpe’。
Specifically, corresponding current signal and voltage signal carry out Fourier transformation under each frequency of 223 pairs of control unit,
Obtain corresponding current signal under each frequencyCorresponding electricity under (plural number, include size and phase information), and each frequency
Flow signal(plural number, include size and phase information)；Further according to formulaCalculate corresponding impedance under each frequency(plural number, include size and phase information)；Finally according to the impedance under different frequencyBattery is calculated according to equation below
The measured value of the Ohmic resistance of groupThe measured value R of polarization resistancepe', the measured value C of polarization capacitype’。
As back-up source battery pack, under normal circumstances in floating charge state, electric current very little, therefore the electricity of battery group
Kinetic potential is almost identical with the terminal voltage of battery group, therefore the measured value E of the electromotive force of battery groupe' can be by measuring unit
222 are obtained by direct measurement.
Referring to Fig. 5, being the method that the good and bad state of battery is assessed according to the quick test of the preferred embodiments of the present invention
Flow chart.This method is applied to the battery pack being in series by more piece cell.As shown in figure 5, what the embodiment was provided
The method that the good and bad state of battery is assessed in quick test comprises the following steps：
First, in step sl, battery detection step is performed, battery pack is divided into multiple by adjacent cell series connection
Battery group, each battery group is detected, the measured value of the performance parameter of each battery group is obtained, the property
Can Ohmic resistance and polarization resistance of the parameter at least including battery group.Preferably, it is divided into 2 to 4 battery groups.
Then, in step s 2, judgment step is performed, by the measured value of the performance parameter of each battery group and the battery
The normal value of the corresponding performance parameters of cell quantity n of group is compared, in the measured value of Ohmic resistanceIt is more than
Its normal valueAnd the measured value C of polarization capacitype' it is less than its normal value CpeWhen, judge that the battery group is present abnormal electric
Pond.
As it was previously stated, when some battery group has behindhand battery, the measured value E of the electromotive force of the battery groupe' can
The normal value E of the electromotive force of the battery group can be equal to or less thane, the measured value of Ohmic resistance More than Ohmic resistance just
Constant valueThe measured value R of polarization resistancepe' it is more than the normal value R of polarization resistancepe, the measured value C of polarization capacitype' it is less than pole
Change the normal value C of electric capacitype.Therefore, preferably exist in the present inventionAnd Cpe' ＜ CpeWhen, judge that the battery group is present
Abnormal battery such as behindhand battery.
In a preferred embodiment of the invention, the performance parameter detected in battery detection step can also include battery group
Electromotive force and polarization resistance.Also by the measured value E of the electromotive force of battery group in judgment stepe' and polarization resistance measurement
Value Rpe' respectively compared with corresponding normal value, to further confirm that battery group with the presence or absence of abnormal.For example, battery in Fig. 1
The measured value R of the polarization resistance of grouppe' it is more than the normal value R of the corresponding polarization resistance of 6 section cellspe, battery group
The measured value E of electromotive forcee' it is less than the normal value E of the corresponding electromotive force of 6 section cellseWhen, i.e. Rpe>’Rpe, Ee' ＜ EeShi Jin
One step confirms that the battery group has abnormal battery.
Preferably, the normal value E of the electromotive force of battery groupeElectromotive force normal value E equal to cell is multiplied by battery
Cell the quantity n, i.e. E of groupe=E × n.The normal value of the Ohmic resistance of battery group Equal to the Europe of cell
Nurse resistance normal value RΩThe cell quantity n of battery group is multiplied by, i.e., The polarization resistance of battery group is just
Constant value RpeEqual to the polarization resistance normal value R of cellpIt is multiplied by cell the quantity n, i.e. R of battery grouppe=Rp×n。
The normal value C of the polarization capacity of battery grouppeEqual to the polarization capacity normal value C of cellpDivided by the monomer of battery group
Number of batteries n, i.e. Rpe=Cp÷n。
Foregoing battery detection step can be realized further by following steps：
First, by the discharge cell for controlling to be connected with battery group, battery group is made to be discharged to connected discharge cell,
To produce the current signal of multiple frequencies.Due to the Ohmic resistance of battery group, polarization resistance, polarization capacity presence, in electricity
, but amplitude identical with current signal frequency will be produced between the positive levels of first batteries of pond group, the negative pole of final section battery
The voltage signal different with phase.Preferably, this method can be using two pairs of p-wires, the first p-wire as shown in Figure 1 and the
Two p-wires, are respectively connecting to the positive pole of the first batteries of corresponding battery group and the negative pole of final section battery.Wherein,
First p-wire includes first voltage line and the first electric current line, and the second p-wire includes second voltage line and the second electric current line.Put
Electric unit can be connected by the first electric current line therein and the second electric current line with battery group, and then make battery group through first
Electric current line and the second electric current line discharge to discharge cell.
Then, corresponding current signal and voltage signal under each frequency of battery group are obtained.In the preferred reality of the present invention
Apply in example, corresponding current signal under each frequency of battery group can be obtained through the first electric current line and the second electric current line, simultaneously
Corresponding voltage signal under each frequency of battery group is obtained by first voltage line and second voltage line.
Finally, according to corresponding current signal and voltage signal under each frequency, and the monomer that the battery group includes
The corresponding circuit model of number of batteries, calculates the measured value E of the electromotive force of the battery groupe', the measured value of Ohmic resistanceThe measured value R of polarization resistancepe' and polarization capacity measured value Cpe’.Its circular is commented with foregoing quick test
It is identical in the embodiment for the device for estimating the good and bad state of battery.
Foregoing quick test is assessed is pressed as 2V in the embodiment of the apparatus and method of the good and bad state of battery with 24 economize on electricitys
The 48V battery packs that are in series of cell exemplified by be illustrated, battery pack is divided into 2 to 4 battery groups, more preferably
Ground is divided into 4 battery groups, wherein each battery group is in series by 6 cells.But the present invention is not limited
The quantity of cell in battery pack, this area basic technology personnel can select the quantity of cell as needed.And
Also the quantity of cell in the quantity of the invention for not limiting battery in battery pack group and each battery group.Preferably,
Battery pack is divided into 2 to 4 battery groups, and makes the quantity of cell in each battery group equal, is easy to performance to join
Several calculating and compare.
In summary, the device and method of the good and bad state of battery is assessed in quick test of the invention, can test each
Battery group includes electromotive force, Ohmic resistance, polarization resistance, the battery performance parameter of polarization capacity, by battery group
Battery performance parameter analysis, judge whether each battery group normal.The present invention is with low cost, can quickly determine battery
Whether group is normal, and determines the approximate location of problem battery, can apply to the fields such as electricity substation, communication base station, computer room UPS
The battery detection of conjunction.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that is not departing from this hair
During bright scope, various change and equivalent substitution can be carried out.In addition, specific occasion or material to adapt to the technology of the present invention, can be right
The present invention carries out many modifications without departing from its protection domain.Therefore, the present invention is not limited to specific embodiment disclosed herein,
And including all embodiments for dropping into claims.
Claims (10)
1. the device of the good and bad state of battery is assessed in a kind of quick test, the battery is to be in series by more piece cell
Battery pack, it is characterised in that it is small that the battery pack is further divided into multiple batteries being in series by adjacent cell
Group；Described device includes main control module and the multiple battery detecting modules communicated therewith；
Each battery detecting module is connected to a battery group in battery pack, for being detected to the battery group, obtains
The measured value of the performance parameter of each battery group, Ohmic resistance and polarization electricity of the performance parameter at least including battery group
Hold；Each battery detecting module has the first p-wire and the second p-wire, the first p-wire and the second p-wire difference
It is connected to the positive pole of the first batteries of corresponding battery group and the negative pole of final section battery；
The main control module is used for the measured value for obtaining the performance parameter of each battery group, and by its list with the battery group
The normal value of the corresponding performance parameter of body number of batteries is compared, and is more than its normal value, and pole in the measured value of Ohmic resistance
When the measured value for changing electric capacity is less than its normal value, judge that the battery group has abnormal battery；
The normal value of the Ohmic resistance of battery group is multiplied by the monomer of battery group equal to the Ohmic resistance normal value of cell
Number of batteries；The normal value of the polarization capacity of battery group is equal to polarization capacity normal value divided by the battery group of cell
Cell quantity.
2. the device of the good and bad state of battery is assessed in quick test according to claim 1, it is characterised in that the performance
Electromotive force and polarization resistance of the parameter also including battery group, the main control module is also by the measured value and polarization resistance of electromotive force
Measured value respectively compared with corresponding normal value, to further confirm that the battery group whether there is abnormal battery.
3. the device of the good and bad state of battery is assessed in quick test according to claim 2, it is characterised in that described first
P-wire includes first voltage line and the first electric current line, and second p-wire includes second voltage line and the second electric current line；
The battery detecting module further comprises：Discharge cell, measuring unit and control unit；
The discharge cell makes battery group through the first electric current line and the second electric current line under the control of described control unit
Discharged to the discharge cell, to produce the current signal of multiple frequencies；
The measuring unit obtains corresponding electric current under each frequency of battery group through the first electric current line and the second electric current line
Signal, and corresponding voltage signal under each frequency of battery group is obtained by the first voltage line and second voltage line；
Described control unit is connected with the measuring unit and discharge cell, for according to corresponding electric current under each frequency
Signal and voltage signal, and the corresponding circuit model of cell quantity that the battery group includes, calculate the battery small
The measured value of electromotive force, Ohmic resistance, polarization resistance and the polarization capacity organized.
4. the device of the good and bad state of battery is assessed in quick test according to claim 2, it is characterised in that the master control
The normal value of the corresponding performance parameter of cell quantity for the battery group that module is used is specially：
The normal value of the electromotive force of battery group is multiplied by the cell of battery group equal to the electromotive force normal value of cell
Quantity；
The normal value of the polarization resistance of battery group is multiplied by the monomer of battery group equal to the polarization resistance normal value of cell
Number of batteries.
5. the device of the good and bad state of battery is assessed in quick test according to claim 1, it is characterised in that the battery
Component is 2 to 4 battery groups.
6. a kind of method that the good and bad state of battery is assessed in quick test, the battery is to be in series by more piece cell
Battery pack, it is characterised in that methods described includes：
Battery detection step：The battery pack is divided into multiple battery groups being in series by adjacent cell, passed through
Be connected respectively to the first p-wire of the positive pole of the first batteries of battery group and the negative pole of final section battery second is surveyed
Examination line is detected to each battery group, obtains the measured value of the performance parameter of each battery group, the performance parameter is extremely
Include the Ohmic resistance and polarization capacity of battery group less；
Judgment step：By the measured value of the performance parameter of each battery group and the cell quantity pair of the battery group
The normal value for the performance parameter answered is compared, and is more than its normal value, and the measurement of polarization capacity in the measured value of Ohmic resistance
When value is less than its normal value, judge that the battery group has abnormal battery；
The normal value of the Ohmic resistance of battery group is multiplied by the monomer of battery group equal to the Ohmic resistance normal value of cell
Number of batteries；The normal value of the polarization capacity of battery group is equal to polarization capacity normal value divided by the battery group of cell
Cell quantity.
7. the method that the good and bad state of battery is assessed in quick test according to claim 6, it is characterised in that the performance
Also by the measured value of electromotive force and polarization electricity in electromotive force and polarization resistance of the parameter also including battery group, the judgment step
The measured value of resistance is respectively compared with corresponding normal value, to further confirm that the battery group whether there is abnormal battery.
8. the method that the good and bad state of battery is assessed in quick test according to claim 7, it is characterised in that the battery
Detecting step is specially：
By the discharge cell for controlling to be connected with battery group, battery group is discharged to connected discharge cell, and produce many
The current signal of individual frequency；
Obtain corresponding current signal and voltage signal under each frequency of battery group；
According to corresponding current signal and voltage signal under each frequency, and the cell number that the battery group includes
Corresponding circuit model is measured, the measurement of electromotive force, Ohmic resistance, polarization resistance and the polarization capacity of the battery group is calculated
Value.
9. the method that the good and bad state of battery is assessed in quick test according to claim 7, it is characterised in that the battery
The normal value of the corresponding performance parameter of cell quantity of group is specially：
The normal value of the electromotive force of battery group is multiplied by the cell of battery group equal to the electromotive force normal value of cell
Quantity；
The normal value of the polarization resistance of battery group is multiplied by the monomer of battery group equal to the polarization resistance normal value of cell
Number of batteries.
10. the method that the good and bad state of battery is assessed in quick test according to claim 6, it is characterised in that the electricity
The battery pack is divided into 2 to 4 battery groups in the detecting step of pond.
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| CN106896331A (en) * | 2017-03-31 | 2017-06-27 | 上海品臻影像科技有限公司 | The method of testing and test device of a kind of battery |
| CN107589378A (en) * | 2017-08-24 | 2018-01-16 | 深圳供电局有限公司 | Storage battery equalization device and method |
| CN111186338B (en) * | 2018-11-13 | 2024-07-12 | 周锡卫 | Energy storage battery BMS system of quick response |
| CN112505561A (en) * | 2021-02-05 | 2021-03-16 | 国网江西省电力有限公司电力科学研究院 | Device and method for detecting performance of storage battery |
| CN114236242A (en) * | 2021-11-23 | 2022-03-25 | 广西电网有限责任公司北海供电局 | Accumulator internal resistance tester and testing method based on composite frequency |
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