CN109239615A - A kind of battery detection method, device, equipment and storage medium - Google Patents
A kind of battery detection method, device, equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of battery detection method, device, equipment and storage mediums, which comprises if the transfger impedance of battery is less than preset threshold, it is determined that there are foreign matters for the inside battery；Determine the foreign matter in the position of the inside battery and the ingredient of the foreign matter；According to the position and the ingredient, the source of the foreign matter is determined.
Description
Technical field
The present embodiments relate to lithium ion battery measuring technology more particularly to a kind of battery detection method, device, equipment
And storage medium.
Background technique
During lithium battery is manufactured, K value refers to the voltage drop of the battery in the unit time, usual unit milli
Volt/octave (mV/d) indicates, is a kind of index for measuring lithium battery self-discharge rate, the detection of K value is highly important one
A link, and the reason for causing K value bad has very much, for example, being impregnated with bad, moisture exception, metallic foreign body micro-short circuit etc..It is numerous
Metal micro-short circuit is even more serious in reason, and metal micro-short circuit refers to that lithium battery is between internal battery core and battery core or single
Small short circuit phenomenon occurs for battery core inside piece.If the product of metallic foreign body micro-short circuit effectively cannot be excluded, and find out
The source of metallic foreign body is simultaneously controlled, it is likely that cause battery in charge and discharge process electrical property deterioration even cause be under fire,
Explosion.Currently, the major way of battery enterprise parsing K value defective products is to search short dot on diaphragm after battery is disassembled, but look into
It looks for the Comparision of short dot time-consuming and laborious, and in many K value defective products which can not learn for metal micro-short circuit in advance
Caused by, thus search at present metallic foreign body in engineering to carry out source efficiency very low.
Summary of the invention
In view of this, the embodiment of the present invention be solve the problems, such as it is existing in the prior art at least one and a kind of battery is provided
Detection method, device, equipment and storage medium.
The technical solution of the embodiment of the present invention is achieved in that
The embodiment of the present invention provides a kind of battery detection method, which comprises
If the transfger impedance of battery is less than preset threshold, it is determined that there are foreign matters for the inside battery；
Determine the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
According to the position and the ingredient, the source of the foreign matter is determined.
In other embodiments, the method also includes:
Freezing processing is carried out to the battery, so that the ion in battery does not have ducting capacity；
Testing impedance is carried out to the battery after freezing processing, obtains transfger impedance.
In other embodiments, the battery to after freezing processing carries out testing impedance, obtains transfger impedance, wraps
It includes:
Within a preset time, testing impedance is carried out to the battery after freezing processing, obtains transfger impedance.
In other embodiments, the method also includes:
The preset time is determined according to the attribute of the battery.
In other embodiments, within a preset time, testing impedance is carried out to the battery after freezing processing, obtains transfer resistance
It is anti-, comprising:
According to the preset time, the speed for completing that testing impedance is carried out to the battery after freezing processing is determined；
According to the speed, the frequency of testing impedance is determined；
In the preset time, testing impedance is carried out to the battery after the freezing processing with the frequency, is obtained
To transfger impedance.
In other embodiments, the method also includes:
The battery that foreign matter will be present is disassembled, and determines the short dot of the battery；
The position of the short dot is determined as to the position of the foreign matter.
In other embodiments, the method also includes:
According to the type of the battery, the preset threshold of the transfger impedance is determined.
In other embodiments, the ingredient of the determination foreign matter, comprising:
Electronic Speculum test is carried out to the foreign matter, determines the ingredient of the foreign matter.
In other embodiments, the method also includes:
According to the source of the foreign matter, the measure that the foreign matter is generated in prevention battery is determined.
The embodiment of the present invention provides a kind of battery check device, and described device includes:
First determination unit, if the transfger impedance for battery is less than preset threshold, it is determined that the inside battery is deposited
In foreign matter；
Second determination unit, for determining the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
Third determination unit, for determining the source of the foreign matter according to the position and the ingredient.
In other embodiments, described device further include:
Freezing unit, for carrying out freezing processing to the battery, so that the ion in battery does not have ducting capacity；
Test cell obtains transfger impedance for carrying out testing impedance to the battery after freezing processing.
In other embodiments, the freezing unit, within a preset time, to the battery after freezing processing into
Row testing impedance, obtains transfger impedance.
In other embodiments, described device further include: the 4th determination unit, for being determined according to the attribute of the battery
The preset time；
Alternatively, determining the measure for generating the foreign matter in prevention battery according to the source of the foreign matter；
Alternatively, determining the preset threshold of the transfger impedance according to the type of the battery.
In other embodiments, the freezing unit, comprising:
First determining module, for determining and completing to carry out the battery after freezing processing according to the preset time
The speed of testing impedance；
Second determining module, for determining the frequency of testing impedance according to the speed；
Test module, in the preset time, with the frequency to the battery after the freezing processing into
Row testing impedance, obtains transfger impedance.
In other embodiments, the method also includes:
Unit is disassembled, the battery for foreign matter to will be present is disassembled, and determines the short dot of the battery；
5th determination unit, for the position of the short dot to be determined as to the position of the foreign matter.
In other embodiments, the second determination unit determines the foreign matter for carrying out Electronic Speculum test to the foreign matter
Ingredient.
The embodiment of the present invention provides a kind of battery detection equipment, including memory and processor, and the memory is stored with
The computer program that can be run on a processor, the processor are realized in above-mentioned battery detection method when executing described program
The step of.
The embodiment of the present invention provides a kind of computer readable storage medium, is stored thereon with computer program, the calculating
Machine program realizes the step in above-mentioned battery detection method when being executed by processor.
Technical solution provided in an embodiment of the present invention, by the determination foreign matter in the position of the inside battery and described
The ingredient of foreign matter when so that encountering the battery of metallic foreign body micro-short circuit, can find out the source of metallic foreign body and be controlled,
Guarantee safety of the battery in charge and discharge process.
Detailed description of the invention
Fig. 1 is a kind of implementation process schematic diagram of battery detection method of the embodiment of the present invention；
Fig. 2 is the implementation process schematic diagram of another battery detection method of the embodiment of the present invention；
Fig. 3 is the implementation process schematic diagram of another battery detection method of the embodiment of the present invention；
Fig. 4 is the implementation process schematic diagram of another battery detection method of the embodiment of the present invention；
Fig. 5 A is a kind of implementation process schematic diagram of battery detection method of the embodiment of the present invention；
Fig. 5 B is the application scenarios schematic diagram of ac impedance measurement of embodiment of the present invention method；
Fig. 5 C is the schematic illustration of the equivalent circuit of battery of embodiment of the present invention fitting；
Fig. 5 D is the schematic diagram of transfger impedance of the embodiment of the present invention；
Fig. 6 is the composed structure schematic diagram of another battery check device of the embodiment of the present invention.
Specific embodiment
Each embodiment for a better understanding of the present invention now carries out following noun to make description below:
K value refers to the voltage drop of the battery in the unit time, and usual unit is indicated with mV/d, is for measuring lithium electricity
A kind of index of pond self-discharge rate.
AC impedance be also referred to as electrochemical impedance spectroscopy (Electrochemical Impedance Spectroscopy,
It EIS), is the equivalent circuit for the chemical reaction of inside battery being replaced into electrical characteristic, the unique method parsed in detail.?
A long time ago, the method is just applied to the test of basic electrochemistry, metal erosion, battery, fuel cell etc..
Battery electrochemical transfger impedance represents the charge transfer resistance of electrochemical reaction, charge transfer resistance and electrode
The electro-chemical activity of material have a very large relationship and electrolyte to obtain concentration relationship little.
Electrochemical workstation (Electrochemical workstation), is the abbreviation of electrochemical measurement system, is electricity
Chemical research and common measuring device of imparting knowledge to students.It mainly has 2 major class, single channel work station and multiple channel operation station, is applied to
Biotechnology, qualitative and quantitative analysis of substance etc..
The technical solution of the present invention is further elaborated in the following with reference to the drawings and specific embodiments.
Embodiment one
The embodiment of the present invention provides a kind of battery detection method, and Fig. 1 is a kind of battery detection method of the embodiment of the present invention
Implementation process schematic diagram, as shown in Figure 1, this method comprises:
Step S101, if the transfger impedance of battery is less than preset threshold, it is determined that there are foreign matters for the inside battery；
Here, preset threshold can be determined according to the type of battery, and the type of battery can be but be not limited to not
There are the non-defective unit battery of any problem and there are the batteries of metallic foreign body short circuit.Using alternating current impedance instrument or electrochemical workstation pair
Battery carries out ac impedance measurement, the transfger impedance for measuring battery is compared with preset threshold, if the transfer of battery hinders
It is anti-to be less than preset threshold, it is determined that there are foreign matters for the inside battery.It, here for example, for example, will not in order to facilitate understanding
There are the non-defective unit battery of any problem and there are the batteries of metallic foreign body short circuit to survey electrochemistry transfger impedance (Rct), battery respectively
The data of transfger impedance are analyzed after test, show that non-defective unit battery electrochemical transfger impedance can reach 20k Ω or more,
And the product of metallic foreign body micro-short circuit can be significantly less than non-defective unit battery because there is short circuit, battery Rct, so that it may set preset threshold
For 20k Ω, if the transfger impedance for measuring battery is less than 20k Ω, it is determined that there are foreign matters for the inside battery.
Step S102 determines the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
Here, it needs internal that there are the batteries of foreign matter to disassemble, finds out the short dot on diaphragm, and mark good short circuit
Point position, the short dot position is exactly the foreign matter in the position of the inside battery, and the foreign matter is detected, and is obtained
The ingredient of the foreign matter.In order to facilitate understanding, here for example, for example, there are the batteries of foreign matter to disassemble by internal, look for
Short dot on diaphragm out, and having marked short dot position is the edge of negative electrode tab, and the foreign matter is detected, and is obtained described
The ingredient of foreign matter is copper.
Step S103 determines the source of the foreign matter according to the position and the ingredient.
Here, it according to the position and the ingredient, determines the source of the foreign matter, understands for convenience, illustrate here
Illustrate, for example, being copper according to foreign matter ingredient, position, which is mainly concentrated, speculates that metallic foreign body is mainly negative with negative electrode tab cutting edge
Pole piece cutting, which generates copper scale, to be caused.
Embodiment two
Fig. 2 is the implementation process schematic diagram of another battery detection method of the embodiment of the present invention, as shown in Fig. 2, this method
Include:
Step S201 carries out freezing processing to the battery, so that the ion in battery does not have ducting capacity；
Here, by battery carry out freezing processing can with but be not limited to pour into liquid nitrogen in insulation barrel and soak battery completely
Not yet, and kept for a period of time, it is ensured that battery freezes completely, and the electrolyte in battery is made not have ion ducting capacity.
Step S202 carries out testing impedance to the battery after freezing processing, obtains transfger impedance；
Here it is possible to testing impedance is carried out to the battery after freezing processing using alternating current impedance instrument or electrochemical workstation,
Obtained test result is exactly transfger impedance.
Step S203, if the transfger impedance of battery is less than preset threshold, it is determined that there are foreign matters for the inside battery；
Step S204 determines the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
Step S205 determines the source of the foreign matter according to the position and the ingredient.
Embodiment three
Fig. 3 is the implementation process schematic diagram of another battery detection method of the embodiment of the present invention, as shown in figure 3, this method
Include:
Battery is carried out freezing processing by step S301, so that the ion in battery does not have ducting capacity；
Step S302 carries out testing impedance to the battery after freezing processing within a preset time, obtains transfer resistance
It is anti-；
Here, the preset time, which can be, determines that it is big that the attribute of battery can be battery according to the attribute of the battery
It is small, surface area, shape, preset time needs set according to the case where battery, the preset time is in order to ensure battery
It will not thaw, for example, battery is bigger, preset time is also longer, can just guarantee that battery will not solve within a preset time in this way
Freeze.
Step S303, if the transfger impedance of battery is less than preset threshold, it is determined that there are foreign matters for the inside battery；
Step S304 determines the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
Step S305 determines the source of the foreign matter according to the position and the ingredient.
In other embodiments, the method also includes: the preset time is determined according to the attribute of the battery.
Here, the attribute of the battery can be battery sizes, and surface area, shape etc., preset time needs are according to battery
The case where set, the preset time is in order to ensure battery will not thaw.
Example IV
Fig. 4 is the implementation process schematic diagram of another battery detection method of the embodiment of the present invention, as shown in figure 4, this method
Include:
Battery is carried out freezing processing by step S401, so that the ion in battery does not have ducting capacity；
Step S402 is determined according to the preset time and is completed to carry out testing impedance to the battery after freezing processing
Speed；
Here, preset time is, in the case where battery will not thaw, to determine exchange resistance in order to ensure battery will not thaw
Anti- instrument or electrochemical workstation complete the speed that testing impedance is carried out to the battery after freezing processing.
Step S403 determines the frequency of testing impedance according to the speed；
Here, to guarantee test speed, need to be arranged test frequency, speed is faster, and frequency is bigger, and the electrolyte of battery is just
Be less susceptible to thaw, speed is slower, and frequency is smaller, the easier defrosting of the electrolyte of battery, can according to the size of velocity amplitude,
Determine the frequency of testing impedance.
Step S404 hinders the battery after the freezing processing with the frequency in the preset time
Anti- test, obtains transfger impedance；
Here, testing impedance is carried out to the battery after the freezing processing with the frequency in the preset time, is
In order to ensure the battery after the freezing processing will not thaw.
Step S405, if the transfger impedance of battery is less than preset threshold, it is determined that there are foreign matters for the inside battery；
Step S406 determines the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
Step S407 determines the source of the foreign matter according to the position and the ingredient.
In other embodiments, the method also includes:
Step S411, the battery that foreign matter will be present are disassembled, and determine the short dot of the battery；
Here, the battery that foreign matter will be present is disassembled, and the short dot on the diaphragm of the battery is found out.
The position of the short dot is determined as the position of the foreign matter by step S412.
Here, the position of the short dot is marked, the position of the short dot is determined as to the position of the foreign matter
It sets.
In other embodiments, the method also includes: according to the type of the battery, determine the default of the transfger impedance
Threshold value.
Here, the type of battery can be but be not limited to the non-defective unit battery there is no any problem and there are metallic foreign bodies
The battery of short circuit.Ac impedance measurement carried out to battery using alternating current impedance instrument or electrochemical workstation, after battery testing
The data of transfger impedance are analyzed, the preset threshold of the transfger impedance is determined according to the result of analysis.
In other embodiments, the ingredient of the determination foreign matter, comprising: carry out Electronic Speculum test to the foreign matter, determine
The ingredient of the foreign matter.
Here, Electronic Speculum test is carried out to the foreign matter using scanning electron microscope, determines the ingredient of the foreign matter, the foreign matter at
Dividing can be copper, iron, copper-zinc, iron-chromium, aluminium etc..
In other embodiments, the method also includes: according to the source of the foreign matter, determine described in being generated in prevention battery
The measure of foreign matter.
Here, it according to the source of the foreign matter, determines the measure for generating the foreign matter in prevention battery, manages for convenience
Solution, here for example, for example, causing if the source of the foreign matter generates copper scale for negative electrode tab cutting, determining prevention battery
The middle measure for generating the foreign matter can find cutter notch, for cutter notch, more to check cathode pole piece cutter
Change cutter.
Embodiment five
The embodiment of the invention provides a kind of methods of metallic foreign body ingredient and position in quickly detection lithium ion battery, use
In the metallic foreign body product for quickly filtering out K value undesirable species and metallic foreign body ingredient and position are determined, to the source of metallic foreign body
It takes measures to play an important role.
Fig. 5 A provides a kind of side for quickly detecting metallic foreign body ingredient and position in lithium ion battery for the embodiment of the present invention
The implementation process schematic diagram of method, as shown in Figure 5A, method includes the following steps:
Step S501 pours into liquid nitrogen in insulation barrel, the K value defective products battery detected will be needed to be totally submerged, one section of holding
Time, it is ensured that battery freezes completely；
Here, the K value defective products detected will be needed to choose to be placed in insulation barrel, liquid nitrogen is poured into insulation barrel battery is complete
Submergence, and kept for a period of time, it is ensured that battery freezes completely, and the electrolyte in battery is made not have ion ducting capacity；
Step S502 carries out ac impedance measurement to battery using alternating current impedance instrument or electrochemical workstation；
Here, electrochemical workstation is the abbreviation of electrochemical measurement system, is electrochemical research and the common measurement of teaching
Equipment.It mainly has 2 major class, single channel work station and multiple channel operation station, the qualitative, quantitative point applied to biotechnology, substance
Analysis etc..During realization, AC impedance (EIS) test is carried out to battery using alternating current impedance instrument or electrochemical workstation.
Fig. 5 B is the application scenarios schematic diagram of ac impedance measurement of embodiment of the present invention method, as shown in Figure 5 B, electrochemical workstation 11
Ac impedance measurement is carried out to battery 12, test is fetched into from battery and completes to be maintained within preset time.Wherein, preset time
It is related with battery sizes, surface area, shape etc..In general, battery is bigger, and preset time is also longer.In other words, it presets
Time can be set according to the case where battery.It completes to be maintained at for example, can set be fetched into test from battery here
Within 3min, it is ensured that electrolyte do not thaw, since electrolyte at this time is freezed completely, and electrochemical impedance is close to infinity, non-defective unit
Battery is similar to capacitor and an infinitely great resistor coupled in parallel, and battery can be fitted to equivalent circuit and carry out AC impedance survey at this time
Examination.
Fig. 5 C is the schematic illustration of the equivalent circuit of battery of embodiment of the present invention fitting, as shown in Figure 5 C, non-defective unit battery
It is in parallel with an infinitely great resistance 22 to be similar to capacitor 21, to guarantee test speed, needs that test frequency is arranged.General test
Frequency is bigger, and test speed is faster, and the electrolyte of battery is just less susceptible to thaw, and correspondingly, test frequency is smaller, test speed
It is slower, the easier defrosting of the electrolyte of battery, for example, test frequency can be set here in 10 kHz (KHz)~10Hz.
Step S503, Applied Electrochemistry work station analyze data, the product of metal micro-short circuit are selected；
Here, after battery testing, data are analyzed in electrochemical operation standing-meeting, the transfer resistance of non-defective unit battery electrochemical
Anti- Rct can reach 20 kilohms (k Ω) or more, and the product of metallic foreign body micro-short circuit can be obvious small because there is short circuit, battery Rct
In non-defective unit battery.Fig. 5 D is the schematic diagram of transfger impedance of the embodiment of the present invention, as shown in Figure 5 D, the transfer resistance of non-defective unit battery electrochemical
Anti- 31, thus the electrochemistry transfger impedance 32 of metallic foreign body micro-short circuit product can select the product of metal micro-short circuit.
Step S504 disassembles the product for the metal micro-short circuit selected, and finds out the short dot on diaphragm, and mark
Short dot position；
Here, short dot can be on some position of positive plate or negative plate.
Step S505 carries out Electronic Speculum test to short dot, determines metallic foreign body ingredient；
Here, metallic foreign body ingredient can be copper, iron, copper-zinc, iron-chromium, aluminium etc..
Step S506 collects metallic foreign body position and ingredient, thus it is speculated that goes out foreign matter source；
Step S507, to deducing foreign matter source implementing measure.
Embodiment six
The embodiment of the present invention provides another battery detection method, this method comprises:
Certain batch cylindrical lithium battery K value defective products is carried out liquid nitrogen frost, is screened by ac impedance measurement by step S601
The lower defective products of transfger impedance out；
Here, certain batch cylindrical lithium battery K value defective products is subjected to liquid nitrogen frost, is tested and is sieved by AC impedance (EIS)
Select transfger impedance (Rct) lower defective products.
Step S602 disassembles the lower defective products of transfger impedance, and searches the short dot on diaphragm；
Step S603 tests short dot position and ingredient, determines that foreign matter ingredient is copper, and mainly concentrates and bear
Pole piece cuts off edge；
Step S604 is copper according to foreign matter ingredient, and mainly concentrates and speculate metallic foreign body master with negative electrode tab cutting edge
To generate copper scale for negative electrode tab cutting causes；
Step S605 is mainly that negative electrode tab cutting generation copper scale causes based on metallic foreign body, carries out to cathode pole piece cutter
It checks, finds cutter notch；
Step S606 replaces cutter for cutter notch；
Step S607, after replacing cutter, no cutting burr, subsequent batches K value fraction defective is decreased obviously.
Embodiment seven
Based on embodiment above-mentioned, the embodiment of the present invention provides a kind of battery check device, which includes included
Each module included by each unit and each unit can be realized by the processor in battery detection equipment；It certainly can also
It is realized by specific logic circuit；In the process of implementation, processor can be central processing unit (CPU), microprocessor
(MPU), digital signal processor (DSP) or field programmable gate array (FPGA) etc..Wherein, battery detection equipment is understood that
For the detection system of a set of automation, it can integrate the functions such as freezing, testing impedance, Electronic Speculum test, battery dismantling, therefore,
It may finally complete the series of steps of the above method.
Fig. 6 is the composed structure schematic diagram of battery check device of the embodiment of the present invention, as shown in fig. 6, described device 600 is wrapped
It includes:
First determination unit 601, if the transfger impedance for battery is less than preset threshold, it is determined that the inside battery
There are foreign matters；
Second determination unit 602, for determining the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
Third determination unit 603, for determining the source of the foreign matter according to the position and the ingredient.
In other embodiments, described device further include:
Freezing unit, for carrying out freezing processing to the battery, so that the ion in battery does not have ducting capacity；
Test cell obtains transfger impedance for carrying out testing impedance to the battery after freezing processing.
In other embodiments, the freezing unit, within a preset time, to the battery after freezing processing into
Row testing impedance, obtains transfger impedance.
In other embodiments, described device further include: the 4th determination unit, for being determined according to the attribute of the battery
The preset time；
Alternatively, determining the measure for generating the foreign matter in prevention battery according to the source of the foreign matter；
Alternatively, determining the preset threshold of the transfger impedance according to the type of the battery.
In other embodiments, the freezing unit, comprising:
First determining module, for determining and completing to carry out the battery after freezing processing according to the preset time
The speed of testing impedance；
Second determining module, for determining the frequency of testing impedance according to the speed；
Test module, in the preset time, with the frequency to the battery after the freezing processing into
Row testing impedance, obtains transfger impedance.
In other embodiments, the method also includes:
Unit is disassembled, the battery for foreign matter to will be present is disassembled, and determines the short dot of the battery；
5th determination unit, for the position of the short dot to be determined as to the position of the foreign matter.
In other embodiments, the second determination unit determines the foreign matter for carrying out Electronic Speculum test to the foreign matter
Ingredient.
The description of apparatus above embodiment, be with the description of above method embodiment it is similar, have same embodiment of the method
Similar beneficial effect.For undisclosed technical detail in apparatus of the present invention embodiment, embodiment of the present invention method is please referred to
Description and understand.
It should be noted that in the embodiment of the present invention, if realizing above-mentioned battery inspection in the form of software function module
Survey method, and when sold or used as an independent product, it also can store in a computer readable storage medium.Base
In such understanding, part that the technical solution of the embodiment of the present invention substantially in other words contributes to the relevant technologies can be with
The form of software product embodies, which is stored in a storage medium, including some instructions to
So that a battery detection equipment executes all or part of each embodiment the method for the present invention.And storage medium above-mentioned
Include: that USB flash disk, mobile hard disk, read-only memory (Read Only Memory, ROM), magnetic or disk etc. are various can store
The medium of program code.It is combined in this way, the embodiment of the present invention is not limited to any specific hardware and software.
Accordingly, the embodiment of the present invention provides a kind of battery detection equipment, including memory and processor, the memory
It is stored with the computer program that can be run on a processor, the processor realizes above-mentioned battery detecting when executing described program
Step in method.
The embodiment of the present invention provides a kind of computer readable storage medium, is stored thereon with computer program, the computer
The step in above-mentioned battery detection method is realized when program is executed by processor.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic is included at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction
" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific features, knot
Structure or characteristic can combine in any suitable manner in one or more embodiments.It should be understood that in various implementations of the invention
In example, magnitude of the sequence numbers of the above procedures are not meant that the order of the execution order, and the execution sequence of each process should be with its function
It can determine that the implementation process of the embodiments of the invention shall not be constituted with any limitation with internal logic.The embodiments of the present invention
Serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.Apparatus embodiments described above are merely indicative, for example, the division of the unit, only
A kind of logical function partition, there may be another division manner in actual implementation, such as: multiple units or components can combine, or
It is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each composition portion
Mutual coupling or direct-coupling or communication connection is divided to can be through some interfaces, the INDIRECT COUPLING of equipment or unit
Or communication connection, it can be electrical, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member, which can be or may not be, to be physically separated, aobvious as unit
The component shown can be or may not be physical unit；Both it can be located in one place, and may be distributed over multiple network lists
In member；Some or all of units can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated in one processing unit, it can also
To be each unit individually as a unit, can also be integrated in one unit with two or more units；It is above-mentioned
Integrated unit both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can store in computer-readable storage medium, which exists
When execution, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: movable storage device, read-only deposits
The various media that can store program code such as reservoir (Read Only Memory, ROM), magnetic or disk.
If alternatively, the above-mentioned integrated unit of the present invention is realized in the form of software function module and as independent product
When selling or using, it also can store in a computer readable storage medium.Based on this understanding, the present invention is implemented
The technical solution of example substantially in other words can be embodied in the form of software products the part that the relevant technologies contribute,
The computer software product is stored in a storage medium, including some instructions are used so that a battery detection equipment executes
The all or part of each embodiment the method for the present invention.And storage medium above-mentioned includes: movable storage device, ROM, magnetic
The various media that can store program code such as dish or CD.
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.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of battery detection method, which is characterized in that the described method includes:
If the transfger impedance of battery is less than preset threshold, it is determined that there are foreign matters for the inside battery；
Determine the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
According to the position and the ingredient, the source of the foreign matter is determined.
2. the method according to claim 1, wherein the method also includes:
Freezing processing is carried out to the battery, so that the ion in battery does not have ducting capacity；
Testing impedance is carried out to the battery after freezing processing, obtains transfger impedance.
3. according to the method described in claim 2, it is characterized in that, the battery to after freezing processing carries out impedance survey
Examination, obtains transfger impedance, comprising:
Within a preset time, testing impedance is carried out to the battery after freezing processing, obtains transfger impedance.
4. according to the method described in claim 3, it is characterized in that, the method also includes:
The preset time is determined according to the attribute of the battery；
Alternatively, determining the preset threshold of the transfger impedance according to the type of the battery；
Alternatively, determining the measure for generating the foreign matter in prevention battery according to the source of the foreign matter.
5. according to the method described in claim 3, it is characterized in that, within a preset time, being carried out to the battery after freezing processing
Testing impedance obtains transfger impedance, comprising:
According to the preset time, the speed for completing that testing impedance is carried out to the battery after freezing processing is determined；
According to the speed, the frequency of testing impedance is determined；
In the preset time, testing impedance is carried out to the battery after the freezing processing with the frequency, is turned
Move impedance.
6. method according to any one of claims 1 to 5, which is characterized in that the method also includes:
The battery that foreign matter will be present is disassembled, and determines the short dot of the battery；
The position of the short dot is determined as to the position of the foreign matter.
7. method according to any one of claims 1 to 5, which is characterized in that the ingredient of the determination foreign matter, packet
It includes:
Electronic Speculum test is carried out to the foreign matter, determines the ingredient of the foreign matter.
8. a kind of battery check device, which is characterized in that described device includes:
First determination unit, if the transfger impedance for battery is less than preset threshold, it is determined that there are different for the inside battery
Object；
Second determination unit, for determining the foreign matter in the position of the inside battery and the ingredient of the foreign matter；
Third determination unit, for determining the source of the foreign matter according to the position and the ingredient.
9. a kind of battery detection equipment, including memory and processor, the memory is stored with and can run on a processor
Computer program, which is characterized in that the processor realizes any one of claim 1 to 7 battery when executing described program
Step in detection method.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt
The step in any one of claim 1 to 7 battery detection method is realized when processor executes.
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