CN105932340A - Lithium ion battery packaging reliability non-destructive testing method - Google Patents
Lithium ion battery packaging reliability non-destructive testing method Download PDFInfo
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- CN105932340A CN105932340A CN201610392069.2A CN201610392069A CN105932340A CN 105932340 A CN105932340 A CN 105932340A CN 201610392069 A CN201610392069 A CN 201610392069A CN 105932340 A CN105932340 A CN 105932340A
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- Prior art keywords
- lithium ion
- ion battery
- acid gas
- fluohydric acid
- package reliability
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention discloses a lithium ion battery packaging reliability non-destructive testing method. The method includes the steps of standing packaged lithium ion batteries for a preset time; detecting a concentration of hydrogen fluoride released by the lithium ion batteries; picking out the lithium ion batteries that release the hydrogen fluoride, and determining that the packaging reliability of the lithium ion batteries that release the hydrogen fluoride is unqualified; and determining that the packaging reliability of the lithium ion batteries that do not release the hydrogen fluoride is qualified. Through adoption of the lithium ion battery packaging reliability non-destructive testing method, full inspection can be performed on the battery so as to guarantee reliability of the whole batch of battery, quality risk is lowered, and the battery is not damaged.
Description
Technical field
The invention belongs to energy storage technology field, particularly relate to a kind of lithium ion battery package reliability
Nondestructive test method.
Background technology
The power supply of consumption electronic product generally uses the lithium ion battery with box hat or aluminum hull, but due to closely
The upgrading of several years consumption electronic products and shortening of update cycle, the project cycle shortened to 1 year by 2～5 years
Even some months, therefore conventional box hat and aluminum-shell battery cannot adapt to the fast of this battery size
Speed change, and it is polymerized lithium ion battery or soft bag lithium ionic cell just can change according to project, flexibly
And quickly make a response, at any time for the making of client's being customized product, simultaneously polymer Li-ion
Battery and soft bag lithium ionic cell also possess and have higher security performance, thus bring consumption electronic product
The change of power supply type, is gradually adjusted to polymer Li-ion battery or Soft Roll lithium ion by box hat, aluminum hull
Battery.
The outer package of polymer Li-ion battery or soft bag lithium ionic cell is one layer 0.06 millimeter to 0.2 millimeter
Aluminium plastic composite packaging film, by heat-sealing, the core of positive pole, negative pole and membrane winding is encapsulated to poly-
In compound packaging film, injecting electrolyte, under vacuum conditions, three edge pressure seal, edge sealing width,
0.5-10mm, and keep vacuum.The encapsulation of polymer Li-ion battery or soft bag lithium ionic cell is reliable
Property directly determines the quality of product, once battery leakage, and battery performance can be decayed rapidly, simultaneously because
Containing fluorion in the electrolyte of lithium ion battery, meet water and can form Fluohydric acid., although amount is little, but still
Electronic product can be caused very major injury.
In order to ensure package reliability, producer typically strictly controls the ginseng of encapsulation when each banding of battery fills
Number, by measuring the thickness at battery edge sealing, dissects battery observation encapsulation hot melt situation and checks battery
Package reliability, concrete, producer is in order to understand package reliability in time, it is necessary in the different time periods
In the battery completed, extract a number of battery according to a certain percentage dissect, observe encapsulation
The best, cause the biggest waste, or use the most aging under 35-50 DEG C of high temperature and room temperature,
These methods can monitor the batch condition of production to a certain extent, filters out batch and remedies, but
Actually also have a small amount of defective products to flow out, cause end product not work, leakage corrosion and battery explosion
Deng safety hazards.
Summary of the invention
For solving the problems referred to above, the not damaged that the invention provides a kind of lithium ion battery package reliability is surveyed
Method for testing, it is possible to entirely examine battery, it is ensured that the reliability of whole batch battery, reduces quality risk,
And do not result in cell damage.
The nondestructive test method of a kind of lithium ion battery package reliability that the present invention provides, including:
Lithium ion battery after encapsulation is placed Preset Time；
Detect the concentration of the fluohydric acid gas of described lithium ion battery release；
Choose lithium ion battery release fluohydric acid gas being detected, it is judged that defective for package reliability；
The lithium ion battery not discharging fluohydric acid gas is judged as that package reliability is qualified.
Preferably, in the nondestructive test method of above-mentioned lithium ion battery package reliability, described detection
The concentration of the fluohydric acid gas of described lithium ion battery release includes:
Described lithium ion battery is positioned in vacuum equipment, under predetermined vacuum degree, the gas that will extract out
Carry out the Concentration Testing of fluohydric acid gas.
Preferably, in the nondestructive test method of above-mentioned lithium ion battery package reliability, described detection
The concentration of the fluohydric acid gas of described lithium ion battery release includes:
Fluohydric acid gas sensor is utilized to detect the dense of fluohydric acid gas in the position of three sides of described lithium ion battery
Degree.
Preferably, in the nondestructive test method of above-mentioned lithium ion battery package reliability, described utilization
Fluohydric acid gas sensor in the concentration of the position of three sides of described lithium ion battery detection fluohydric acid gas is:
Utilize fluohydric acid gas sensor that three sides of described lithium ion battery carry out speed to be not more than
The scanning of 100mm/s.
Preferably, in the nondestructive test method of above-mentioned lithium ion battery package reliability, described utilization
Fluohydric acid gas sensor in the concentration of the position of three sides of described lithium ion battery detection fluohydric acid gas is:
Utilize the fluohydric acid gas sensor time within the side of described lithium ion battery stops 5 seconds.
Preferably, in the nondestructive test method of above-mentioned lithium ion battery package reliability, described by envelope
Lithium ion battery after dress places Preset Time:
Described lithium ion battery after encapsulation is placed 0.5 minute to 10 minutes in vacuum space.
Preferably, in the nondestructive test method of above-mentioned lithium ion battery package reliability, described in choose
Detect release fluohydric acid gas lithium ion battery, it is judged that for package reliability defective after, also include:
Differentiating the underproof lithium ion battery of described package reliability is that encapsulation is bad or encapsulation is damaged, and will
Encapsulate bad lithium ion battery to carry out mending encapsulation, carry out scrapping process by the lithium ion battery that encapsulation is damaged.
By foregoing description, the nondestructive test of the lithium ion battery package reliability that the present invention provides
Method, owing to first the lithium ion battery after encapsulation being placed Preset Time, then detects described lithium-ion electric
The concentration of the fluohydric acid gas of pond release, then choose lithium ion battery release fluohydric acid gas being detected, it is judged that for envelope
Dress reliability is defective, and the lithium ion battery not discharging fluohydric acid gas being judged as, package reliability is qualified,
This method need not dismantle battery, it becomes possible to entirely examines battery, therefore, it is possible to guarantee whole batch
The reliability of battery, reduces quality risk, and does not results in cell damage.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
The nondestructive test of the first lithium ion battery package reliability that Fig. 1 provides for the embodiment of the present application
The schematic diagram of method；
The nondestructive test of the second lithium ion battery package reliability that Fig. 2 provides for the embodiment of the present application
The schematic diagram of method；
The nondestructive test of the third lithium ion battery package reliability that Fig. 3 provides for the embodiment of the present application
The schematic diagram of method；
The nondestructive test of the 4th kind of lithium ion battery package reliability that Fig. 4 provides for the embodiment of the present application
The schematic diagram of method.
Detailed description of the invention
The core concept of the present invention is to provide the nondestructive test side of a kind of lithium ion battery package reliability
Method, it is possible to entirely examine battery, it is ensured that the reliability of whole batch battery, reduces quality risk, and
And do not result in cell damage.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
The nondestructive test method of the first lithium ion battery package reliability that the embodiment of the present application provides is such as
Shown in Fig. 1, the not damaged of the first lithium ion battery package reliability that Fig. 1 provides for the embodiment of the present application
The schematic diagram of method of testing.The method comprises the steps:
S1: the lithium ion battery after encapsulation is placed Preset Time；
In this step, the lithium ion battery after encapsulation can be placed under vacuum conditions, its objective is
Accelerated ageing, bad reflects as early as possible by bad or potential for the outer package of battery, and vacuum can be selected
It is selected as-20KPa to-95KPa, determines, according to the size of battery, the time that vacuum is placed.
S2: detect the concentration of the fluohydric acid gas of described lithium ion battery release；
It is as follows that fluorion in lithium ion battery overflows principle:
For current polymer Li-ion battery or soft bag lithium ionic cell, the salt in its electrolyte still makes
Use LiPF6, LiPF6It is easy to decompose, chance micro-moisture as easy as rolling off a log generation side reaction:
LiPF6→LiF+PF5；
PF5+H2O→POF3+2HF；
POF3+H2O→PO2F+2HF；
PO2F+H2O→H3PO4+2HF；
Newly generated HF is a kind of highly acid gas, can damage inside battery structure, and this just enters one
The increase of step aggravation HF.If two polypropylene melt glue-lines are bad, the hydrone in air enters into
In battery, electrolyte can decompose generation fluohydric acid gas, is diffused into outside battery, it addition, the polymer bag of battery
Dress film rupture also results in fluohydric acid gas and produces, and is diffused into outside battery.
Based on above-mentioned principle, this step just judges the envelope of battery by the way of the concentration of detection fluohydric acid gas
It is the most qualified to fill, and the detection of concentration is not limited in vacuum suction measurement method and the side utilizing sensor to detect
Method both.
S3: choose lithium ion battery release fluohydric acid gas being detected, it is judged that defective for package reliability；
Based on above-mentioned principle, if certain lithium ion battery detected fluohydric acid gas, then explanation encapsulation can not
Leaning on, result in fluohydric acid gas and leak out, this is accomplished by further being scrapped or maintenance work, utilizes this
The method of kind, it is possible to whole batteries is detected, does not have missing inspection.
S4: the lithium ion battery not discharging fluohydric acid gas is judged as that package reliability is qualified.
Same reason, if certain lithium ion battery does not discharge fluohydric acid gas, illustrates not leakage, card
Bright package reliability is qualified, can normally dispatch from the factory.
By foregoing description, the nondestructive test of the lithium ion battery package reliability that the present invention provides
Method, owing to first the lithium ion battery after encapsulation being placed Preset Time, then detects described lithium-ion electric
The concentration of the fluohydric acid gas of pond release, then choose lithium ion battery release fluohydric acid gas being detected, it is judged that for envelope
Dress reliability is defective, and the lithium ion battery not discharging fluohydric acid gas being judged as, package reliability is qualified,
This method need not dismantle battery, it becomes possible to entirely examines battery, therefore, it is possible to guarantee whole batch
The reliability of battery, reduces quality risk, and does not results in cell damage.
The nondestructive test method of the second lithium ion battery package reliability that the embodiment of the present application provides is such as
Shown in Fig. 2, the not damaged of the second lithium ion battery package reliability that Fig. 2 provides for the embodiment of the present application
The schematic diagram of method of testing, the method comprises the steps:
A1: the lithium ion battery after encapsulation is placed Preset Time；
A2: be positioned in vacuum equipment by described lithium ion battery, under predetermined vacuum degree, by extract out
Gas carries out the Concentration Testing of fluohydric acid gas；
This step is concrete steps of step S2 in above-mentioned first method, at the shape that vacuum is constant
Under state, the gas perfluorinated hydrogen sensor detection that evacuation is extracted out, obtain the concentration of fluohydric acid gas, then lead to
Cross the concentration of fluohydric acid gas to judge the reliability step of cell package, determine whether battery encapsulates good, electric
Pond is the need of mending envelope, battery the need of scrapping etc..The mode utilizing evacuation can be by fluohydric acid gas
Gas puts together, and reaches the degree being able to detect that, and this mode can improve the efficiency of detection.
A3: choose lithium ion battery release fluohydric acid gas being detected, it is judged that defective for package reliability；
A4: the lithium ion battery not discharging fluohydric acid gas is judged as that package reliability is qualified.
Concrete, " two way classification " can be used to determine the underproof lithium ion battery of encapsulation, if certain
A collection of lithium ion battery evacuation mode detects fluohydric acid gas, now and do not know about specifically which battery
Encapsulate defective, then be accomplished by making further operation, from vacuum equipment, take out this batch of battery,
And it being divided into two parts that quantity is equal, evacuation checks this two parts battery the most respectively, then by it
In verify fluohydric acid gas a part continue halve detection, until finally determine encapsulation underproof tool
Body certain or some battery, this makes it possible to reduce workload, finds out encapsulation with speed faster defective
Battery.
The nondestructive test method of the third lithium ion battery package reliability that the embodiment of the present application provides is such as
Shown in Fig. 3, the not damaged of the third lithium ion battery package reliability that Fig. 3 provides for the embodiment of the present application
The schematic diagram of method of testing, the method comprises the steps:
B1: the lithium ion battery after encapsulation is placed Preset Time；
B2: utilize fluohydric acid gas sensor to detect fluohydric acid gas in the position of three sides of described lithium ion battery
Concentration；
This step is also concrete steps of step S2 in above-mentioned first method, can be by a collection of battery
Be positioned over fluohydric acid gas detection streamline on, fluohydric acid gas sensor by the edge of battery is scanned,
The concentration of detection fluohydric acid gas, whole process completes in an automated manner, and efficiency is high.
B3: choose lithium ion battery release fluohydric acid gas being detected, it is judged that defective for package reliability；
B4: the lithium ion battery not discharging fluohydric acid gas is judged as that package reliability is qualified.
The nondestructive test method of the 4th kind of lithium ion battery package reliability that the embodiment of the present application provides is such as
Shown in Fig. 4, the not damaged of the 4th kind of lithium ion battery package reliability that Fig. 4 provides for the embodiment of the present application
The schematic diagram of method of testing, the method comprises the steps:
C1: the lithium ion battery after encapsulation is placed Preset Time；
C2: be positioned in vacuum equipment by described lithium ion battery, under predetermined vacuum degree, by extract out
Gas carries out the Concentration Testing of fluohydric acid gas；
C3: utilize fluohydric acid gas sensor to detect fluohydric acid gas in the position of three sides of described lithium ion battery
Concentration；
C4: choose lithium ion battery release fluohydric acid gas being detected, it is judged that defective for package reliability；
C5: the lithium ion battery not discharging fluohydric acid gas is judged as that package reliability is qualified.
Visible, above-mentioned 4th kind of method is that the mode first with evacuation finds out the underproof battery institute of encapsulation
Group, then utilize sensor further determine that exist encapsulate defective problem battery, this knot
The mode closed can improve the motility of battery detecting, can quickly determine the electricity that there is encapsulation problem equally
Pond.
The nondestructive test method of the 5th kind of lithium ion battery package reliability that the embodiment of the present application provides,
It is on the basis of above-mentioned the third or the 4th kind of method, also includes following technical characteristic:
Described utilize fluohydric acid gas sensor the position of three sides of described lithium ion battery detect fluohydric acid gas
Concentration be:
Utilize fluohydric acid gas sensor that three sides of described lithium ion battery carry out speed to be not more than
The scanning of 100mm/s.
Concrete, 0-10mm above every battery, move with 0-100mm/s, can be by battery
Planar dimension increases quantity and the position of fluohydric acid gas sensor.
The nondestructive test method of the 6th kind of lithium ion battery package reliability that the embodiment of the present application provides,
It is on the basis of above-mentioned the third or the 4th kind of method, also includes following technical characteristic:
Described utilize fluohydric acid gas sensor the position of three sides of described lithium ion battery detect fluohydric acid gas
Concentration be:
Utilize the fluohydric acid gas sensor time within the side of described lithium ion battery stops 5 seconds.
Concrete, the side edge of 0-10mm above every battery, stop 5 seconds, can putting down by battery
Face size increases quantity and the position of fluohydric acid gas sensor.
The nondestructive test method of the 7th kind of lithium ion battery package reliability that the embodiment of the present application provides,
Be above-mentioned the first to the 6th in method on the basis of any one method, also include following technical characteristic:
Described will encapsulation after lithium ion battery place Preset Time be:
Described lithium ion battery after encapsulation is placed 0.5 minute to 10 minutes in vacuum space.This
Under vacuum environment, it is possible to the problem in packaging shown as early as possible, improve the work efficiency of detection.
The nondestructive test method of the 8th kind of lithium ion battery package reliability that the embodiment of the present application provides,
Be above-mentioned the first to the 6th in method on the basis of any one method, also include following technical characteristic:
Described choose detect release fluohydric acid gas lithium ion battery, it is judged that for package reliability defective it
After, also include:
Differentiating the underproof lithium ion battery of described package reliability is that encapsulation is bad or encapsulation is damaged, and will
Encapsulate bad lithium ion battery to carry out mending encapsulation, carry out scrapping process by the lithium ion battery that encapsulation is damaged.
Concrete, detect that the leakage risk of the biggest battery of hydrogen fluoride concentration is the biggest, this inspection method energy
It is rapidly achieved and entirely examines effect.Each detection method above-mentioned uses fluohydric acid gas electrochemical sensor, can detect
To the concentration of the fluohydric acid gas of 0-100ppm, described lithium ion battery includes being polymerized lithium ion battery or Soft Roll lithium
Ion battery.
Above-mentioned various method all need not dismantle battery, it is possible to entirely examines battery, therefore, it is possible to guarantee
The reliability of whole batch battery, reduces quality risk, and does not results in cell damage.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (7)
1. the nondestructive test method of a lithium ion battery package reliability, it is characterised in that including:
Lithium ion battery after encapsulation is placed Preset Time；
Detect the concentration of the fluohydric acid gas of described lithium ion battery release；
Choose lithium ion battery release fluohydric acid gas being detected, it is judged that defective for package reliability；
The lithium ion battery not discharging fluohydric acid gas is judged as that package reliability is qualified.
The nondestructive test method of lithium ion battery package reliability the most according to claim 1, its
Being characterised by, the concentration of the fluohydric acid gas of described detection described lithium ion battery release includes:
Described lithium ion battery is positioned in vacuum equipment, under predetermined vacuum degree, the gas that will extract out
Carry out the Concentration Testing of fluohydric acid gas.
3. according to the nondestructive test of the lithium ion battery package reliability described in any one of claim 1-2
Method, it is characterised in that the concentration of the fluohydric acid gas of described detection described lithium ion battery release includes:
Fluohydric acid gas sensor is utilized to detect the dense of fluohydric acid gas in the position of three sides of described lithium ion battery
Degree.
The nondestructive test method of lithium ion battery package reliability the most according to claim 3, its
Be characterised by, described utilize fluohydric acid gas sensor the position of three sides of described lithium ion battery detect
The concentration of fluohydric acid gas is:
Utilize fluohydric acid gas sensor that three sides of described lithium ion battery carry out speed to be not more than
The scanning of 100mm/s.
The nondestructive test method of lithium ion battery package reliability the most according to claim 3, its
Be characterised by, described utilize fluohydric acid gas sensor the position of three sides of described lithium ion battery detect
The concentration of fluohydric acid gas is:
Utilize the fluohydric acid gas sensor time within the side of described lithium ion battery stops 5 seconds.
6. according to the nondestructive test of the lithium ion battery package reliability described in any one of claim 1-5
Method, it is characterised in that described will encapsulation after lithium ion battery place Preset Time be:
Described lithium ion battery after encapsulation is placed 0.5 minute to 10 minutes in vacuum space.
7. according to the nondestructive test of the lithium ion battery package reliability described in any one of claim 1-5
Method, it is characterised in that described in choose detect release fluohydric acid gas lithium ion battery, it is judged that for encapsulation
After reliability is defective, also include:
Differentiating the underproof lithium ion battery of described package reliability is that encapsulation is bad or encapsulation is damaged, and will
Encapsulate bad lithium ion battery to carry out mending encapsulation, carry out scrapping process by the lithium ion battery that encapsulation is damaged.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505253A (en) * | 2016-12-16 | 2017-03-15 | 天津力神电池股份有限公司 | The detection method of soft package lithium battery packaging effect |
| CN107764487A (en) * | 2017-11-15 | 2018-03-06 | 丰川泽精工机械无锡有限公司 | Gas leak detection apparatus |
| CN107941431A (en) * | 2017-11-15 | 2018-04-20 | 丰川泽精工机械无锡有限公司 | Gas leak detection method |
| CN113092030A (en) * | 2021-04-12 | 2021-07-09 | 翼捷监测技术(苏州)有限公司 | Leak detection method for TO packaging infrared sensor |
| CN113945335A (en) * | 2021-10-14 | 2022-01-18 | 湖南兴旭能新能源科技有限公司 | Device and method for detecting encapsulation tightness of lithium ion battery cell |
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| JP2000260402A (en) * | 1999-03-12 | 2000-09-22 | Toshiba Battery Co Ltd | Battery pack |
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| JP2000260402A (en) * | 1999-03-12 | 2000-09-22 | Toshiba Battery Co Ltd | Battery pack |
| CN103682505A (en) * | 2012-09-07 | 2014-03-26 | 罗伯特·博世有限公司 | Energy accumulator possessing sealing monitoring |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505253A (en) * | 2016-12-16 | 2017-03-15 | 天津力神电池股份有限公司 | The detection method of soft package lithium battery packaging effect |
| CN107764487A (en) * | 2017-11-15 | 2018-03-06 | 丰川泽精工机械无锡有限公司 | Gas leak detection apparatus |
| CN107941431A (en) * | 2017-11-15 | 2018-04-20 | 丰川泽精工机械无锡有限公司 | Gas leak detection method |
| CN113092030A (en) * | 2021-04-12 | 2021-07-09 | 翼捷监测技术(苏州)有限公司 | Leak detection method for TO packaging infrared sensor |
| CN113945335A (en) * | 2021-10-14 | 2022-01-18 | 湖南兴旭能新能源科技有限公司 | Device and method for detecting encapsulation tightness of lithium ion battery cell |
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Application publication date: 20160907 |