CN105388387A - Device and method for detecting short circuit between flexible packaging lithium ion battery negative electrode and shell - Google Patents
Device and method for detecting short circuit between flexible packaging lithium ion battery negative electrode and shell Download PDFInfo
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- CN105388387A CN105388387A CN201510836410.4A CN201510836410A CN105388387A CN 105388387 A CN105388387 A CN 105388387A CN 201510836410 A CN201510836410 A CN 201510836410A CN 105388387 A CN105388387 A CN 105388387A
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- ion battery
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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]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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Abstract
The invention provides a device for detecting a flexible packaging lithium ion battery negative electrode and a shell. The device includes an insulating carrier plate; a first metal strip and a second metal strip which do not contact with each other are fixed on the insulating carrier plate; the detection device also includes an external power supply; and the external power supply is connected with the first metal strip through a lead, and is connected with the second metal strip through a light emitting diode at the same time. Aiming at the defect that the prior art cannot accurately judge whether a measuring instrument is in effective contact with a shell aluminium layer, the invention provides the device for detecting the short circuit between the flexible packaging lithium ion battery negative electrode and the shell, and the device is simple in structure, high in accuracy and wide in practicability.
Description
Technical field
The invention belongs to lithium ion battery preparing product field, particularly relate to pick-up unit and the detection method of a kind of flexible packing lithium ion battery negative pole and housing short circuit.
Background technology
Day by day universal along with portable digital products such as mobile phone, notebook computer, panel computer, digital cameras, the requirement for lithium ion battery energy density is more and more higher.In order to realize storing more energy in the inner space that lithium ion battery is limited, cell designer need to utilize inside battery space as much as possible, have higher requirement thus to the manufacturing accuracy of battery.
But in actual production, if deviation appears in manufacturing accuracy, very easily cause the aluminum plastic film enclosure interior PP layer of flexible packing lithium ion battery damaged.The micro-HF acid existed in electrolytic solution slowly can corrode the exposed aluminium lamination of housing, causes leakage, has a strong impact on the usability of battery and the personal safety of user.In addition, electrolytic solution is good ion conductor, if battery cathode and housing aluminium lamination exist electronics path simultaneously, the lithium ion in aluminium lamination and electrolytic solution electrochemical reaction will occur, and generates lithium-aluminium alloy, causes aluminium lamination to become fragile gradually, battery leakage.Therefore, accurately detect that the short circuit (hereinafter referred to as shell short circuit) between battery cathode and housing aluminium lamination is most important.
Metering system conventional is at present by the resistance (hereinafter referred to as shell resistance) between measurement negative electrode lug and housing aluminium lamination defective batteries to be detected, and ensures battery quality.For guaranteeing the reliability of measurement result, the prerequisite that must meet is: two union ends of surveying instrument contact well respectively with the negative electrode lug of tested battery, housing aluminium lamination.But, aluminum plastic film is sandwich construction, be followed successively by CPP layer, aluminium lamination, nylon layer, (pet layer) from inside to outside, the CPP layer adjacent with aluminium lamination and nylon layer are all insulators, because this increasing the difficulty judging whether the link of surveying instrument fully contacts with housing aluminium lamination.
Authorization Notice No. CN203101511U discloses a kind of pick-up unit of lithium ion battery case short circuit, adopts driving mechanism (such as cylinder) to realize probe and presses down and contact with tested battery cathode ear, can save manpower, improve measurement efficiency.Whether indicating mechanism's (described is LED or electric bell) object in this utility model detects housing effectively to contact with measuring sonde, if LED luminescence, shows that battery is placed on tram.The method is not accurate enough, because: when tested battery is certified products (namely there is not shell short circuit), even if battery has been placed on tram, LED also may be luminous.Application notification number CN103336244A and the shell short-circuit detecting device described in application notification number CN104166069A then do not possess the whether sufficient function of contacting detecting surveying instrument and housing aluminium lamination, reduce the Measurement reliability of described device, there is risk shell resistance defective products being mistaken for certified products.
Summary of the invention
The present invention be directed to prior art and accurately cannot judge the defect whether surveying instrument effectively contacts with housing aluminium lamination, the pick-up unit of a kind of structure is simple, accuracy is high, practicality is wide flexible packing lithium ion battery negative pole and housing short circuit is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the pick-up unit of a kind of flexible packing lithium ion battery negative pole and housing short circuit, is characterized in that: comprise insulation support plate; Described insulation support plate is fixed with two non-touching first bonding jumpers and the second bonding jumper; Described pick-up unit also comprises an external power supply; Described external power supply connects the first bonding jumper by wire, connects the second bonding jumper by light emitting diode simultaneously.Here should be noted the polarity of light emitting diode, its positive pole is connected with the positive pole of external power supply.
Further, described pick-up unit also comprises tested lithium ion battery, described tested lithium ion battery is positioned on insulation support plate, the arrangement mode of described first bonding jumper and the second bonding jumper is determined according to the lug position of tested lithium ion battery, and two side contacts at the first bonding jumper and the second bonding jumper lug place non-with tested lithium ion battery are respectively connected.
The height of described first bonding jumper and the second bonding jumper is greater than the thickness of tested lithium ion battery.
The area of described insulation support plate is greater than tested lithium ion battery, guarantees to carry tested lithium ion battery completely, and tested lithium ion battery is placed on it not to tilt.
Preferably, when the positive and negative lug of tested lithium ion battery is positioned at the same side, described first bonding jumper and the second bonding jumper vertical arrangement.
When the positive and negative lug of tested lithium ion battery is positioned at relative both sides, described first bonding jumper and the second bonding jumper parallel arrangement.
Further, described insulation support plate is wood based panel or plastic plate; Described first bonding jumper and the second bonding jumper are the good metal of electric conductivity.
Further, described external power supply is the lithium ion battery of supplying power for outside.
Another object of the present invention is to provide and utilize the pick-up unit of above-mentioned flexible packing lithium ion battery negative pole and housing short circuit to carry out the method detected, comprise the steps:
(1) be positioned over by tested lithium ion battery on insulation support plate, two side contacts at the first bonding jumper and the second bonding jumper lug place non-with tested lithium ion battery are respectively connected;
(2) if light emitting diode continuous illumination, then judge that the first bonding jumper and the second bonding jumper and tested lithium-ion battery shell aluminium lamination carry out effective connection; Directly carry out step (3); If light emitting diode is not luminous or flicker, then judge that external power supply electricity deficiency or the first bonding jumper are not fully communicated with tested lithium-ion battery shell aluminium lamination with the second bonding jumper, now need the position changed external power supply or adjust tested lithium ion battery, till light emitting diode continuous illumination;
(3) shell short-circuit detecting is carried out; When light emitting diode continuous illumination, keep tested lithium ion battery invariant position, the connection of break line and the first bonding jumper, or the connection of break line and external power supply, light emitting diode extinguishes immediately; Subsequently two of resistance measuring instrument links are connected respectively the negative electrode lug of the first bonding jumper/the second bonding jumper, tested lithium ion battery, wait for resistance measuring instrument result of determination.
The advantage that the present invention has and good effect are:
(1) accurately can judge whether the link of surveying instrument fully contacts with housing aluminium lamination.Under the prerequisite of external electric quantity of power supply abundance, by observing light emitting diode, whether continuous illumination judges whether tested lithium-ion battery shell aluminium lamination is fully communicated with the first bonding jumper with the second bonding jumper.When two bonding jumpers are fully communicated with by housing aluminium lamination, resistance measuring instrument link is connected with the first bonding jumper (or second bonding jumper) and is namely equivalent to link and is connected with housing aluminium lamination, ensure that the reliability of testing result.
(2) practicality is stronger.Pick-up unit of the present invention is applicable to the measurement of the flexible packing lithium ion battery of different size and structure.The tested battery of the same side is positioned at, as long as can be carried completely by support plate, namely without the need to changing support plate and bonding jumper for positive and negative lug.To the size of the first bonding jumper and the second bonding jumper without particular/special requirement, only need highly be greater than tested cell thickness, whether length covers limit and base on the left of tested battery completely.Be positioned at the tested lithium ion battery of relative both sides for positive and negative lug, the position that only need adjust the first bonding jumper (or second bonding jumper) makes it parallel with another bonding jumper, and the distance of two bonding jumpers is as the criterion with the left and right side contacting tested battery simultaneously.And shell short-circuit detecting device disclosed in Authorization Notice No. CN203101511U, application notification number CN103336244A and application notification number CN104166069A is only applicable to measure the battery of positive and negative lug in the same side, and support plate or base need be changed for the battery of different size.
(3) make simple, cheap.Pick-up unit of the present invention is without the need to driving mechanisms such as cylinders, and external power supply is lithium ion battery, is conveniently easy to get, can recycle.And pick-up unit all comprises driving mechanism, complex structure disclosed in Authorization Notice No. CN203101511U, application notification number CN103336244A and application notification number CN104166069A.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pick-up unit of flexible packing lithium ion battery negative pole of the present invention and housing short circuit.
Fig. 2 is when the positive and negative lug of tested lithium ion battery is positioned at the same side, the structural representation of the pick-up unit of flexible packing lithium ion battery negative pole of the present invention and housing short circuit.
Fig. 3 is the structural representation using resistance measuring instrument to carry out shell short-circuit detecting.
In figure:
1, insulate support plate; 2, the first bonding jumper; 3, the second bonding jumper; 4, wire; 5, light emitting diode; 6, external power supply; 7, tested lithium ion battery; 8, resistance measuring instrument.
Embodiment
Embodiment 1
As shown in Figure 1, the pick-up unit of a kind of flexible packing lithium ion battery negative pole and housing short circuit, comprises insulation support plate 1; Insulation support plate 1 is fixed with two non-touching first bonding jumper 2 and the second bonding jumpers 3; Pick-up unit also comprises an external power supply 6; The negative pole of external power supply 6 connects the first bonding jumper 2 by wire 4, and the positive pole pole of external power supply 6 connects the second bonding jumper 4 by light emitting diode 5; The positive pole of light emitting diode 5 is connected with the positive pole of external power supply 6.
Embodiment 2
As shown in Figure 2, the pick-up unit of a kind of flexible packing lithium ion battery negative pole and housing short circuit, comprises insulation support plate 1; Insulation support plate 1 is fixed with two non-touching first bonding jumper 2 and the second bonding jumpers 3; Pick-up unit also comprises an external power supply 6; The negative pole of external power supply 6 connects the first bonding jumper 2 by wire 4, and the positive pole pole of external power supply 6 connects the second bonding jumper 4 by light emitting diode 5; The positive pole of light emitting diode 5 is connected with the positive pole of external power supply 6.
Pick-up unit also comprises tested lithium ion battery 7, and tested lithium ion battery 7 is positioned on insulation support plate 1, and the positive and negative lug of tested lithium ion battery 7 is positioned at the same side, the first bonding jumper 2 and the second bonding jumper 3 vertical arrangement; First bonding jumper 2 and the second bonding jumper 3 contact with base with the side at the non-lug place of tested lithium ion battery 7 respectively and are connected.The height of the first bonding jumper 2 and the second bonding jumper 3 is greater than the thickness of tested lithium ion battery 7.The area of insulation support plate 1 is greater than tested lithium ion battery 7, and guarantee to carry tested lithium ion battery 7 completely, tested lithium ion battery 7 is placed on it not to tilt.
Insulation support plate 1 is wood based panel; First bonding jumper 2 and the second bonding jumper 3 are copper bar.
External power supply 6 is the lithium ion battery of supplying power for outside.
Embodiment 3
Utilize the pick-up unit of the flexible packing lithium ion battery negative pole in above-described embodiment 1 and housing short circuit to carry out the method detected, comprise the steps:
(1) be positioned over by tested lithium ion battery 7 on insulation support plate 1, the first bonding jumper 2 and the second bonding jumper 3 are connected with two side contacts at the non-lug place of tested lithium ion battery 7 respectively;
(2) if light emitting diode 5 continuous illumination, then judge that the first bonding jumper 2 and the second bonding jumper 3 and tested lithium ion battery 7 housing aluminium lamination carry out effective connection; Directly carry out step (3); If light emitting diode 5 is not luminous or flicker, then judge that external power supply 6 electricity deficiency or the first bonding jumper 2 are not fully communicated with tested lithium ion battery 7 housing aluminium lamination with the second bonding jumper 3, now need the position changed external power supply 6 or adjust tested lithium ion battery 7, till light emitting diode 5 continuous illumination;
(3) shell short-circuit detecting is carried out; As shown in Figure 3, when light emitting diode 5 continuous illumination, keep tested lithium ion battery 7 invariant position, the connection of break line 4 and the first bonding jumper 2, or the connection of break line 4 and external power supply 6, light emitting diode 5 extinguishes immediately; Subsequently two of resistance measuring instrument 8 links are connected respectively the negative electrode lug of the first bonding jumper 2/ second bonding jumper 3, tested lithium ion battery 7, wait for resistance measuring instrument 8 result of determination, then take out tested lithium ion battery 7 and store classifiedly.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the scope of the invention change and improve, and all should still belong within this patent covering scope.
Claims (9)
1. a pick-up unit for flexible packing lithium ion battery negative pole and housing short circuit, is characterized in that: comprise insulation support plate; Described insulation support plate is fixed with two non-touching first bonding jumpers and the second bonding jumper; Described pick-up unit also comprises an external power supply; Described external power supply connects the first bonding jumper by wire, connects the second bonding jumper by light emitting diode simultaneously.
2. pick-up unit according to claim 1, it is characterized in that: described pick-up unit also comprises tested lithium ion battery, described tested lithium ion battery is positioned on insulation support plate, and two side contacts at described first bonding jumper and the second bonding jumper lug place non-with tested lithium ion battery are respectively connected.
3. pick-up unit according to claim 2, is characterized in that: the height of described first bonding jumper and the second bonding jumper is greater than the thickness of tested lithium ion battery.
4. pick-up unit according to claim 2, is characterized in that: the area of described insulation support plate is greater than tested lithium ion battery.
5. pick-up unit according to claim 2, is characterized in that: when the positive and negative lug of tested lithium ion battery is positioned at the same side, described first bonding jumper and the second bonding jumper vertical arrangement.
6. pick-up unit according to claim 2, is characterized in that: when the positive and negative lug of tested lithium ion battery is positioned at relative both sides, described first bonding jumper and the second bonding jumper parallel arrangement.
7. pick-up unit according to claim 1, is characterized in that: described insulation support plate is wood based panel or plastic plate; Described first bonding jumper and the second bonding jumper are the good metal of electric conductivity.
8. pick-up unit according to claim 1, is characterized in that: described external power supply is the lithium ion battery of supplying power for outside.
9. utilize the pick-up unit of the flexible packing lithium ion battery negative pole described in claim 2 and housing short circuit to carry out the method detected, it is characterized in that, comprise the steps:
(1) be positioned over by tested lithium ion battery on insulation support plate, two side contacts at the first bonding jumper and the second bonding jumper lug place non-with tested lithium ion battery are respectively connected;
(2) if light emitting diode continuous illumination, then judge that the first bonding jumper and the second bonding jumper and tested lithium-ion battery shell aluminium lamination carry out effective connection; Directly carry out step (3); If light emitting diode is not luminous or flicker, then judge that external power supply electricity deficiency or the first bonding jumper are not fully communicated with tested lithium-ion battery shell aluminium lamination with the second bonding jumper, now need the position changed external power supply or adjust tested lithium ion battery, till light emitting diode continuous illumination;
(3) shell short-circuit detecting is carried out; When light emitting diode continuous illumination, keep tested lithium ion battery invariant position, the connection of break line and the first bonding jumper, or the connection of break line and external power supply, light emitting diode extinguishes immediately; Subsequently two of resistance measuring instrument links are connected respectively the negative electrode lug of the first bonding jumper/the second bonding jumper, tested lithium ion battery, wait for resistance measuring instrument result of determination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836410.4A CN105388387B (en) | 2015-11-25 | 2015-11-25 | The detection device and detection method of flexible packing lithium ion battery cathode and shell short circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510836410.4A CN105388387B (en) | 2015-11-25 | 2015-11-25 | The detection device and detection method of flexible packing lithium ion battery cathode and shell short circuit |
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| CN105388387A true CN105388387A (en) | 2016-03-09 |
| CN105388387B CN105388387B (en) | 2018-10-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106597550A (en) * | 2016-11-24 | 2017-04-26 | 深圳市豪鹏科技有限公司 | System and method for detecting liquid injection leakage of vented battery |
| CN105807235B (en) * | 2016-05-07 | 2018-11-02 | 合肥国轩高科动力能源有限公司 | Method for rapidly detecting short circuit between battery pole and shell under low voltage |
| CN109269967A (en) * | 2018-09-21 | 2019-01-25 | 合肥国轩高科动力能源有限公司 | Method for testing corrosion of lithium ion battery shell |
| CN109884504A (en) * | 2019-03-14 | 2019-06-14 | 合肥本源量子计算科技有限责任公司 | A kind of quantum chip capacity detection method |
| CN111044787A (en) * | 2019-12-09 | 2020-04-21 | 天津市捷威动力工业有限公司 | Rapid analysis method for shell resistor defective products |
| CN111766272A (en) * | 2020-06-18 | 2020-10-13 | 合肥国轩高科动力能源有限公司 | Battery aluminum-plastic film pit punching damage detection liquid and detection method thereof |
| CN112462218A (en) * | 2020-11-10 | 2021-03-09 | 珠海冠宇电池股份有限公司 | Battery cell pressurization tool, battery cell voltage-withstanding testing device and voltage-withstanding testing method |
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| CN111044787A (en) * | 2019-12-09 | 2020-04-21 | 天津市捷威动力工业有限公司 | Rapid analysis method for shell resistor defective products |
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| CN111766272A (en) * | 2020-06-18 | 2020-10-13 | 合肥国轩高科动力能源有限公司 | Battery aluminum-plastic film pit punching damage detection liquid and detection method thereof |
| CN112462218A (en) * | 2020-11-10 | 2021-03-09 | 珠海冠宇电池股份有限公司 | Battery cell pressurization tool, battery cell voltage-withstanding testing device and voltage-withstanding testing method |
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