CN109818088A - A kind of Fast Evaluation lithium ion battery pressure risk device - Google Patents
A kind of Fast Evaluation lithium ion battery pressure risk device Download PDFInfo
- Publication number
- CN109818088A CN109818088A CN201811564532.2A CN201811564532A CN109818088A CN 109818088 A CN109818088 A CN 109818088A CN 201811564532 A CN201811564532 A CN 201811564532A CN 109818088 A CN109818088 A CN 109818088A
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- China
- Prior art keywords
- clamping plate
- pressure sensor
- battery
- pressure
- lithium ion
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- 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
Abstract
The invention proposes a kind of Fast Evaluation lithium ion battery pressure risk devices, including fixed mechanism, first pressure sensor, second pressure sensor and data collecting instrument；Four screw rods are separately positioned on four Angle Positions of first clamping plate, screw rod first end sequentially passes through first clamping plate, second clamping plate, third clamping plate and is threadedly engaged and connect with first clamping plate, third clamping plate, battery fixed area is formed between first clamping plate and second clamping plate, first pressure sensor is mounted between second clamping plate and third clamping plate；Second pressure sensor is connect by connector with battery anti-explosion valve；Data collecting instrument and first pressure sensor, second pressure sensor are electrically connected.The present invention passes through first pressure sensor and second pressure sensor, internal pressure-air pressure of synchronous acquisition and battery and external pressure-expansive force, the inside and outside pressure of battery is organically combined, the risk class of battery can accurately, be quickly judged, be used directly for current lithium ion battery.
Description
Technical field
The present invention relates to lithium ion battery the field of test technology more particularly to a kind of Fast Evaluation lithium ion battery pressure winds
Dangerous device.
Background technique
It since lithium ion battery has the important advantages such as high voltage, high capacity, and has extended cycle life, security performance height, makes
It has broad application prospects in various aspects such as portable electronic device, electric car, space technology, national defense industry, becomes
The research hotspot widely paid close attention in recent years.
For lithium battery while having many advantages, such as, there is also some defects.Bulging, leakage occur in use for battery
Liquid seriously affects the safety of user, and after battery dresses up mould group, the extruding force that the battery of bulging is mutual again can be sharply
Rise, gently then causes the performance degradation of battery, it is heavy then mould group is caused to crack, cause uncontrollable safety accident.Can accurately, it is fast
Pressure of the evaluation battery of speed under various operating conditions is most important, can not only prejudge the risk class of battery core, while avoiding disliking
The generation of property safety accident, is all of great significance for entire lithium electricity industry.
Summary of the invention
Based on technical problem present in background technique, the invention proposes a kind of Fast Evaluation lithium ion battery pressure winds
Dangerous device.
A kind of Fast Evaluation lithium ion battery pressure risk device proposed by the present invention, including fixed mechanism, first pressure
Sensor, second pressure sensor and data collecting instrument；Fixed mechanism includes first clamping plate, second clamping plate, third clamping plate and four
A screw rod, first clamping plate, second clamping plate, third clamping plate is sequentially arranged in the horizontal direction and first clamping plate, second clamping plate, third folder
Plate is parallel to each other, and four screw rods are separately positioned on four Angle Positions of first clamping plate, screw rod first end sequentially pass through first clamping plate,
Second clamping plate, third clamping plate are simultaneously threadedly engaged and connect with first clamping plate, third clamping plate, and contactless between screw rod and second clamping plate
Connection, first end, the second end of screw rod are respectively equipped with the first nut, the second nut that connection is threadedly engaged with it, first clamping plate
Battery fixed area is formed between second clamping plate, first pressure sensor is mounted between second clamping plate and third clamping plate；Second
Pressure sensor is connect by connector with battery anti-explosion valve；Data collecting instrument and first pressure sensor, second pressure sense
Device is electrically connected.
Preferably, connector is closely connect by laser welding, ultrasonic welding or soldering with battery anti-explosion valve.
Preferably, the range of first pressure sensor is 1-10000kgf, area 1-10000cm2.
Preferably, second pressure sensor uses gas pressure sensor, and second pressure sensor base is screw-rod structure,
Connector is equipped with screw hole, and second pressure sensor base screw rod, which is threadedly coupled with connector and passes through screw hole, opens battery anti-explosion
Valve and inside battery gas connection.
A kind of Fast Evaluation lithium ion battery pressure risk device proposed by the present invention passes through first pressure sensor and
Internal pressure-air pressure of two pressure sensors, synchronous acquisition and battery and external pressure-expansive force organically combine the inside and outside pressure of battery
Get up, can accurately, quickly judge the risk class of battery；It is easy to operate, it is used directly for current lithium ion battery；
The design that the present invention seals can make lithium ion battery shelve, store, overcharge in chemical conversion, aging, different temperatures circulation, calendar,
Mould group uses etc. to be used under various working conditions, the electrochemical reaction without interfering inside lithium ion cell；Double pressures of the invention
Power acquisition system can accurately reflect the variation of gas production rate inside, the variation of cell thickness, battery producing gas and the electricity of battery
Pond expansive force corresponding relationship, risk class that can be current with rapid evaluation battery；For in the R & D design of battery, manufacturing process
Character surveillance, battery performance test and finished product end be using all having great importance.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of Fast Evaluation lithium ion battery pressure risk device proposed by the present invention.
Specific embodiment
Referring to Fig.1, the present invention proposes a kind of Fast Evaluation lithium ion battery pressure risk device, including fixed mechanism,
One pressure sensor 1, second pressure sensor 2 and data collecting instrument 3；Wherein:
Fixed mechanism includes first clamping plate 4, second clamping plate 5, third clamping plate 6 and four screw rods 7, and first clamping plate 4, second is pressed from both sides
Plate 5, third clamping plate 6 are sequentially arranged in the horizontal direction and first clamping plate 4, second clamping plate 5, third clamping plate 6 are parallel to each other, four spiral shells
Bar 7 is separately positioned on four Angle Positions of first clamping plate 4, and 7 first end of screw rod sequentially passes through first clamping plate 4, second clamping plate 5,
Three-ply board 6 is simultaneously threadedly engaged and connect with first clamping plate 4, third clamping plate 6, and contactless connection between screw rod 7 and second clamping plate 5,
First end, the second end of screw rod 7 are respectively equipped with the first nut 8, the second nut 9 that connection is threadedly engaged with it, first clamping plate 4 with
Battery fixed area is formed between second clamping plate 5.
First pressure sensor 1 is mounted between second clamping plate 5 and third clamping plate 6, and the range of first pressure sensor 1 is
1-10000kgf, area 30cm2.
Second pressure sensor 2 is connect by connector 10 with battery anti-explosion valve, and connector 10 passes through laser welding, ultrasound
Welding or soldering are closely connect with battery anti-explosion valve.Second pressure sensor 2 uses gas pressure sensor, range 1-
100kPa, 2 bottom of second pressure sensor are screw-rod structure, and connector 10 is equipped with screw hole, 2 bottom spiral shell of second pressure sensor
Bar, which is threadedly coupled with connector 10 and passes through screw hole, opens battery anti-explosion valve and inside battery gas connection.
Data collecting instrument 3 and first pressure sensor 1, second pressure sensor 2 are electrically connected.
The course of work of the invention is as follows:
The first step chooses a finished product VDA size cell 11, having a size of 148mm (length) × 27mm (width) × 97mm (height),
By connector 10 by being laser-welded to the explosion-proof valve region of battery 11；
Second step screws 2 bottom end screw rod of second pressure sensor with connector 10, while bottom end screw rod opens battery and prevents
Quick-fried valve, second pressure sensor 2 starts data feedback at this time；
The battery for installing second pressure sensor 2 is placed in battery fixed area by third step, and first pressure sensing is set 1
Between second clamping plate 5 and third clamping plate 6, first clamping plate 4, second clamping plate 5 is made to clamp battery simultaneously by adjusting the first nut 8
Second clamping plate 5, third clamping plate 6 is made to clamp first pressure sensor 1 by adjusting the second nut 9, initial pretightening force is
100kgf；
Battery 11 is carried out charge-discharge test by the 4th step, data collecting instrument 3 can with 11 air pressure inside of synchronous acquisition battery and
The variation of external expansion power.
The present invention passes through first pressure sensor 1 and second pressure sensor 2, internal pressure-air pressure of synchronous acquisition and battery
With external pressure-expansive force, the inside and outside pressure of battery 11 is organically combined, can accurately, quickly judge the risk of battery
Grade；It is easy to operate, it is used directly for current lithium ion battery；The design that the present invention seals can be such that lithium ion battery is changing
It shelves, store at, aging, different temperatures circulation, calendar, overcharging, being used under the various working conditions such as mould group uses, without interfering
The electrochemical reaction of inside lithium ion cell；Double pressure acquisition systems of the invention can accurately reflect the inside of battery
The variation of gas production, the variation of cell thickness, battery producing gas and cell expansion power corresponding relationship, can be current with rapid evaluation battery
Risk class；Character surveillance, battery performance test and finished product end in the R & D design of battery, manufacturing process is used
All have great importance.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of Fast Evaluation lithium ion battery pressure risk device, which is characterized in that sensed including fixed mechanism, first pressure
Device (1), second pressure sensor (2) and data collecting instrument (3)；Fixed mechanism includes first clamping plate (4), second clamping plate (5),
Three-ply board (6) and four screw rods (7), first clamping plate (4), second clamping plate (5), third clamping plate (6) are sequentially arranged in the horizontal direction
And first clamping plate (4), second clamping plate (5), third clamping plate (6) are parallel to each other, four screw rods (7) are separately positioned on first clamping plate
(4) four Angle Positions, screw rod (7) first end sequentially pass through first clamping plate (4), second clamping plate (5), third clamping plate (6) and with
First clamping plate (4), third clamping plate (6) are threadedly engaged connection, and contactless connection between screw rod (7) and second clamping plate (5), screw rod
(7) first end, second end is respectively equipped with the first nut (8), the second nut (9) that connection is threadedly engaged with it, first clamping plate
(4) battery fixed area is formed between second clamping plate (5), first pressure sensor (1) is mounted on second clamping plate (5) and third is pressed from both sides
Between plate (6)；Second pressure sensor (2) is connect by connector (10) with battery anti-explosion valve；Data collecting instrument (3) and first
Pressure sensor (1), second pressure sensor (2) are electrically connected.
2. Fast Evaluation lithium ion battery pressure risk device according to claim 1, which is characterized in that connector (10)
It is closely connect by laser welding, ultrasonic welding or soldering with battery anti-explosion valve.
3. Fast Evaluation lithium ion battery pressure risk device according to claim 1, which is characterized in that first pressure passes
The range of sensor (1) is 1-10000kgf, area 1-10000cm2。
4. Fast Evaluation lithium ion battery pressure risk device according to any one of claim 1-3, which is characterized in that
Second pressure sensor (2) uses gas pressure sensor, and second pressure sensor (2) bottom is screw-rod structure, connector
(10) it is equipped with screw hole, second pressure sensor (2) bottom screw, which is threadedly coupled with connector (10) and passes through screw hole, opens electricity
Pond explosion-proof valve and inside battery gas connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564532.2A CN109818088A (en) | 2018-12-20 | 2018-12-20 | A kind of Fast Evaluation lithium ion battery pressure risk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564532.2A CN109818088A (en) | 2018-12-20 | 2018-12-20 | A kind of Fast Evaluation lithium ion battery pressure risk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109818088A true CN109818088A (en) | 2019-05-28 |
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ID=66601716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564532.2A Pending CN109818088A (en) | 2018-12-20 | 2018-12-20 | A kind of Fast Evaluation lithium ion battery pressure risk device |
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| Country | Link |
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| CN (1) | CN109818088A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197895A (en) * | 2020-09-08 | 2021-01-08 | 合肥国轩高科动力能源有限公司 | Square electricity core bulging force testing arrangement |
| CN112945452A (en) * | 2021-03-31 | 2021-06-11 | 蜂巢能源科技有限公司 | Cell air pressure testing device and cell air pressure testing method |
| WO2024068583A1 (en) * | 2022-09-26 | 2024-04-04 | Solithor Bv | Cell fixture assembly and method of using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005339925A (en) * | 2004-05-26 | 2005-12-08 | Toyota Motor Corp | Inspection method of unit cell and assembly method of battery pack |
| CN204575242U (en) * | 2015-04-22 | 2015-08-19 | 宁德时代新能源科技有限公司 | The system that monitoring lithium ion battery expands |
| CN206848445U (en) * | 2017-05-13 | 2018-01-05 | 合肥国轩高科动力能源有限公司 | A kind of device of quick test finished product lithium ion battery with hard shell internal pressure |
-
2018
- 2018-12-20 CN CN201811564532.2A patent/CN109818088A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005339925A (en) * | 2004-05-26 | 2005-12-08 | Toyota Motor Corp | Inspection method of unit cell and assembly method of battery pack |
| CN204575242U (en) * | 2015-04-22 | 2015-08-19 | 宁德时代新能源科技有限公司 | The system that monitoring lithium ion battery expands |
| CN206848445U (en) * | 2017-05-13 | 2018-01-05 | 合肥国轩高科动力能源有限公司 | A kind of device of quick test finished product lithium ion battery with hard shell internal pressure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197895A (en) * | 2020-09-08 | 2021-01-08 | 合肥国轩高科动力能源有限公司 | Square electricity core bulging force testing arrangement |
| CN112945452A (en) * | 2021-03-31 | 2021-06-11 | 蜂巢能源科技有限公司 | Cell air pressure testing device and cell air pressure testing method |
| WO2024068583A1 (en) * | 2022-09-26 | 2024-04-04 | Solithor Bv | Cell fixture assembly and method of using the same |
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Application publication date: 20190528 |