CN206292012U - A kind of lithium-ion-power cell device for detecting sealability - Google Patents

A kind of lithium-ion-power cell device for detecting sealability Download PDF

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Publication number
CN206292012U
CN206292012U CN201621368045.5U CN201621368045U CN206292012U CN 206292012 U CN206292012 U CN 206292012U CN 201621368045 U CN201621368045 U CN 201621368045U CN 206292012 U CN206292012 U CN 206292012U
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China
Prior art keywords
battery
lithium
ion
mold
power cell
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CN201621368045.5U
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Chinese (zh)
Inventor
吉跃华
袁伟宏
杜隆
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Jiangsu Chengtai Automation Technology Co.,Ltd.
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Zhenjiang Cheng Tai Automation Technology Co Ltd
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Abstract

The utility model discloses a kind of lithium-ion-power cell device for detecting sealability, including mold, lower mould, buffer board, buffer structure, correspondence offers battery detecting chamber in the mold, the lower mould, the buffer board is connected by the buffer structure with the mold, the mold top is provided with normal pressure connection joint, seal pipe, balance columns and vacuum communicating joint, the seal pipe upper end is additionally provided with tap, and the tap connects joint with the normal pressure by pipeline connection.The utility model has the advantages that the good battery of sealing is in detection process, only the airtight chamber between outside batteries and battery detecting chamber is vacuumized, inside battery will not be subject to any influence for vacuumizing, impurity will not be introduced inside all spec batteries because carrying out sealing propertytest or powder is extracted out, it is ensured that the security and uniformity of battery.

Description

A kind of lithium-ion-power cell device for detecting sealability
Technical field
The utility model is related to a kind of battery sealing-performance detection means, more particularly to a kind of lithium-ion-power cell sealing Detection means.
Background technology
The external packing of lithium-ion-power cell is aluminum hull, it is necessary to by battery cover and the side of battery case at the end of assembly process Edge carries out laser welding, with sealed cell edge.If good airproof performance, whole inside battery only have at liquid injection hole with extraneous phase It is logical.Lithium-ion-power cell is after periphery is welded, it is necessary to be tested to welding effect, it is ensured that inside battery sealing after welding Well, existing lithium-ion-power cell method for conducting leak test has following two:
First, the tracheae and liquid injection hole that detecting instrument is picked out are in close contact, it is ensured that contact position is air tight, and tracheae passes through fluid injection Hole is blown in battery, and pressurize for a period of time, detects whether that insufflation gas can also be continued, if being filled with gas after blowing into a certain amount of gas The scale of construction is more than given standard, then illustrate that the bad i.e. welding effect of battery sealing-performance is bad.
2nd, the tracheae and liquid injection hole that detecting instrument is picked out are in close contact, it is ensured that contact position is air tight, and tracheae passes through fluid injection Hole vacuumizes to inside battery, and pressurize for a period of time, detects whether that gas bleeding can also be continued, if taking out after extracting a certain amount of gas out Go out gas flow and be more than given standard, then illustrate that the bad i.e. welding effect of battery sealing-performance is bad.
When detecting battery sealing-performance using both approaches, either inflated to inside battery, or inside battery is taken out Vacuum, can all influence every detected inside battery, and endotracheal impurity easily is blown into inside battery during air blowing, vacuumize When, easily inside battery powder is extracted out.
Utility model content
Utility model purpose:Regarding to the issue above, to be to provide a kind of lithium-ion-power cell close for the purpose of this utility model Envelope property detection means, inside battery need not be inflated or vacuumized when battery sealing-performance is detected, will not be to inside battery Have adverse effect on.
Technical scheme:
A kind of lithium-ion-power cell device for detecting sealability, including mold, lower mould, buffer board, buffer structure, institute State correspondence in mold, the lower mould and offer battery detecting chamber, the buffer board by the buffer structure with it is described Mold is connected, and the mold top is provided with normal pressure connection joint, seal pipe, balance columns and vacuum communicating joint, described close Tube sealing upper end is additionally provided with tap, and the tap connects joint with the normal pressure by pipeline connection, under battery loading is described In mould, the mold is covered with the lower mould sealing, and the liquid injection hole of battery is corresponding with the seal pipe, the normal pressure Connection joint and atmosphere, balance columns make battery or so stress consistent, prevent battery from upwarping, battery and the mold, institute One airtight cavity of formation between lower mould is stated, airtight cavity is vacuumized, unfavorable shadow will not be produced to inside battery Ring.
Preferably, normal pressure connection coupling, vacuum communicating coupling are additionally provided with the buffer board, are connected with the normal pressure Coupling connects fittings with the normal pressure by pipeline, and the vacuum communicating coupling passes through pipeline and the vacuum communicating Fittings, set coupling on buffer board, are more convenient for connecting vacuum extractor by pipeline.
Preferably, the battery detecting chamber offers at least two, disposably can simultaneously measure multiple lithium ions and move The sealing of power battery, operating efficiency is greatly improved.
Specifically, the face that covers of the mold and the lower mould is provided with sealing gasket, mold is covered on lower mould When, its contact surface is kept sealing.
Specifically, the seal pipe lower end is coated with sealing ring, when seal pipe is pressed on lithium-ion-power cell liquid injection hole When, sealing ring is located between seal pipe and battery liquid-filling hole, it is ensured that it is tightly connected, and in whole battery detecting chamber, only notes Fluid apertures is connected with atmospheric sealing.
Specifically, the buffer structure includes fastening bolt and buffer spring, buffer spring is located at buffer board and mold Between, it is fixed on buffer board by fastening bolt.
Specifically, also including the drive device for driving the buffer board to move up and down, the drive device includes cylinder, connects Acting flange, retaining collar, cylinder connection piece, guide pillar, guide pin bushing, support, the adpting flange, the retaining collar, the cylinder Connector is sequentially arranged on the buffer board from the bottom up, and the cylinder is installed on the support, the piston rod of the cylinder Be connected with the cylinder connection piece, the guide pillar is placed in the guide pin bushing, the guide pillar upper end is connected with the support, lower end with The buffer board connection, the position of guide pillar limiting buffer plate, it is ensured that air cylinder driven buffer board drives mold smoothly to transport up and down It is dynamic.
Beneficial effect:Compared with prior art, the utility model has the advantages that the good battery of sealing is in detection process In, only the airtight chamber between outside batteries and battery detecting chamber is vacuumized, inside battery will not be vacuumized Any influence, will not be introduced because carrying out sealing propertytest inside all spec batteries impurity or extract out powder, it is ensured that The security and uniformity of battery, and the device can carry out sealing propertytest to multiple batteries simultaneously, drastically increase Production efficiency, effectively alleviates the working strength of workman, it will be apparent that improve the accuracy of battery sealing-performance detection.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A of Fig. 1 to structural representation;
Fig. 3 is the left view of Fig. 1;
Fig. 4 is the B of Fig. 3 to structural representation;
Fig. 5 is the top view of Fig. 1;
Fig. 6 is dimensional structure diagram of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the utility model is further elucidated, it should be understood that these embodiments are only used for Illustrate the utility model rather than limit scope of the present utility model, after the utility model has been read, art technology Modification of the personnel to the various equivalent form of values of the present utility model falls within the application appended claims limited range.
As Figure 1-3, a kind of lithium-ion-power cell device for detecting sealability, including mold 1, lower mould 2, buffering Plate 3, battery detecting chamber 4, normal pressure connection joint 5, seal pipe 6, balance columns 7 and vacuum communicating joint 8, tap 9, normal pressure connect Logical coupling 10, vacuum communicating coupling 11, fastening bolt 12, buffer spring 13, adpting flange 14, retaining collar 15, cylinder Connector 16, guide pillar 17, guide pin bushing 18, cylinder, support.
As Figure 4-Figure 6, battery detecting chamber 4 sets six, corresponding by the chamber opened up in mold 1 and lower mould 2 Composition, the top of mold 1 is provided with normal pressure connection joint 5, seal pipe 6, balance columns 7 and vacuum communicating joint 8, the upper end of seal pipe 6 Tap 9 is additionally provided with, tap 9 connects joint 5 with normal pressure by soft pipe connection, with the external world while sealed cell liquid injection hole Air is connected.Normal pressure connection coupling 10, vacuum communicating coupling 11, vacuum communicating coupling are additionally provided with buffer board 3 11 are connected by pipeline with vacuum communicating joint 8, and normal pressure connection coupling 10 connects joint 5 with normal pressure and connects by pipeline.On The place of covering of mould 1 and lower mould 2 is provided with sealing gasket, and the lower end of seal pipe 6 is provided with sealing ring, mold 1 is closed together in On lower mould 2, and the lower end of seal pipe 6 keeps being tightly connected with the liquid injection hole of battery.Battery is fitted into lower mould 2, and mold 1 exists Covered with the sealing of lower mould 2 under the driving of drive device, only the liquid injection hole of battery is tightly connected with seal pipe 6, and by normal Pressure connection joint 5 and atmosphere, form an airtight cavity between battery and mold 1, lower mould 2, balance columns make battery Left and right stress is consistent, prevents battery from upwarping.
Buffer spring 13 is located between buffer board 3 and mold 1, is fixed on buffer board 3 by fastening bolt 12, is being driven It is dynamic to play cushioning effect between device and mold 1, it is to avoid mold 1 and lower mould 2 are because the powerful active force of drive device is produced It is raw to damage, naturally it is also possible to other buffer structures to be installed and is replaced.Drive device is connected on buffer board 3, drive device bag Include cylinder, adpting flange 14, retaining collar 15, cylinder connection piece 16, guide pillar 17, guide pin bushing 18, support, adpting flange 14, fixation The collar 15, cylinder connection piece 16 are sequentially arranged on buffer board 3 from the bottom up, and cylinder is installed on support, the piston rod of cylinder with Cylinder connection piece 16 is connected, and guide pillar 17 is placed in the guide pin bushing 18, and upper end is connected with support, and lower end is connected with buffer board 3, is being driven It is play the guiding role when dynamic.
The detection method of above-mentioned lithium-ion-power cell device for detecting sealability, comprises the following steps:
Step 1, battery is fitted into the battery detecting chamber of lower mould;
Step 2, drive device drive mold to be closed together on lower mould, and the seal pipe is pressed on battery liquid-filling hole On, the seal pipe and battery liquid-filling hole keep being tightly connected, inside battery and atmosphere;
Step 3, connection vavuum pump to vacuum communicating coupling, the airtight cavity formed to battery and mold, lower mould Vacuumized, for a period of time according to the situation of change of vacuum pressure value, whether sealing is good to judge battery for pressurize.
Wherein, the time≤10s for vacuumizing is set in step 3, the change of vacuum pressure value illustrates electricity if in 1KPa Pond sealing is good, and the change of vacuum pressure value then illustrates that cell sealing is bad more than 1KPa.If welding battery effect is bad, I.e. sealing is bad in itself for battery, and extraneous air will enter inside battery by liquid injection hole, then by battery sealing-performance not Good place is leaked in the device, so as to cause the vacuum pressure of the airtight cavity formed between battery detecting chamber and battery Value is widely varied.Can certainly be set according to other standards of sealing propertytest, it is not limited to seal above Property detection standard.
When carrying out sealing propertytest to lithium-ion-power cell using the device, liquid injection hole and the sealing seal of tube of battery connect Connect, and and atmosphere, the battery good for sealing, only to the airtight chamber between outside batteries and battery detecting chamber Vacuumized, the powder of inside battery will not be taken out of or impurity is blown into inside battery, it is ensured that the quality of battery, only Battery certified products can not had by the battery of poor sealing when vacuumizing by the gas of extraction inside battery at poor sealing Any harmful effect, with existing battery sealing-performance detect compared with have obvious progress, it is ensured that the security of battery with it is consistent Property, the efficiency of detection is considerably improved, while to avoid suck vacuum extractor by impurity, it is effectively improved package unit Service life.

Claims (8)

1. a kind of lithium-ion-power cell device for detecting sealability, it is characterised in that:Including mold (1), lower mould (2), delay Punching (3), buffer structure, correspondence offers battery detecting chamber (4) in the mold (1), the lower mould (2), described Buffer board (3) is connected by the buffer structure with the mold (1), and mold (1) top is provided with normal pressure connection and connects Head (5), seal pipe (6), balance columns (7) and vacuum communicating joint (8), seal pipe (6) upper end are additionally provided with tap (9), The tap (9) connects joint (5) with the normal pressure by pipeline connection, and battery is fitted into the lower mould (2), it is described on Mould (1) is covered with lower mould (2) sealing, and the liquid injection hole of battery is corresponding with the seal pipe (6), the normal pressure connection Joint (5) and atmosphere, form an airtight cavity between battery and the mold (1), the lower mould (2).
2. a kind of lithium-ion-power cell device for detecting sealability according to claim 1, it is characterised in that:The buffering Normal pressure is additionally provided with plate (3) and connects coupling (10), vacuum communicating coupling (11), the normal pressure connects coupling (10) and passes through Pipeline connects joint (5) connection with the normal pressure, and the vacuum communicating coupling (11) is connect by pipeline with the vacuum communicating Head (8) connection.
3. a kind of lithium-ion-power cell device for detecting sealability according to claim 1, it is characterised in that:The battery Detection chambers (4) offer at least two.
4. a kind of lithium-ion-power cell device for detecting sealability according to claim 1, it is characterised in that:The upper mould The face that covers of tool (1) and the lower mould (2) is provided with sealing gasket.
5. a kind of lithium-ion-power cell device for detecting sealability according to claim 1, it is characterised in that:The sealing Pipe (6) lower end is coated with sealing ring.
6. a kind of lithium-ion-power cell device for detecting sealability according to claim 1, it is characterised in that:The buffering Structure include fastening bolt (12) and buffer spring (13), the buffer spring (13) located at the buffer board (3) and it is described on Between mould (1), it is fixed on the buffer board (3) by the fastening bolt (12).
7. a kind of lithium-ion-power cell device for detecting sealability according to claim 1, it is characterised in that:Also include driving Dynamic device, the drive device drives the buffer board (3) to move up and down.
8. a kind of lithium-ion-power cell device for detecting sealability according to claim 7, it is characterised in that:The driving Device includes cylinder, adpting flange (14), retaining collar (15), cylinder connection piece (16), guide pillar (17), guide pin bushing (18), support, The adpting flange (14), the retaining collar (15), the cylinder connection piece (16) are sequentially arranged in the buffering from the bottom up On plate (3), the cylinder is installed on the support, and the piston rod of the cylinder is connected with the cylinder connection piece (16), institute State guide pillar (17) to be placed in the guide pin bushing (18), guide pillar (17) upper end is connected with the support, lower end and the buffer board (3) connect.
CN201621368045.5U 2016-12-13 2016-12-13 A kind of lithium-ion-power cell device for detecting sealability Active CN206292012U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621368045.5U CN206292012U (en) 2016-12-13 2016-12-13 A kind of lithium-ion-power cell device for detecting sealability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621368045.5U CN206292012U (en) 2016-12-13 2016-12-13 A kind of lithium-ion-power cell device for detecting sealability

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CN206292012U true CN206292012U (en) 2017-06-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106525351A (en) * 2016-12-13 2017-03-22 镇江成泰自动化技术有限公司 Detection device and method for sealing performance of lithium ion power batteries
CN108767339A (en) * 2018-05-10 2018-11-06 无锡格林司通自动化设备有限公司 A kind of pressure regulating system checked for lithium rechargeable battery leakage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106525351A (en) * 2016-12-13 2017-03-22 镇江成泰自动化技术有限公司 Detection device and method for sealing performance of lithium ion power batteries
CN108767339A (en) * 2018-05-10 2018-11-06 无锡格林司通自动化设备有限公司 A kind of pressure regulating system checked for lithium rechargeable battery leakage
CN108767339B (en) * 2018-05-10 2021-08-10 无锡格林司通自动化设备有限公司 Pressure adjusting system for leakage inspection of lithium ion secondary battery

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Effective date of registration: 20210603

Address after: 212000 building 16, SME Innovation Park, No. 300, Gangnan Road, New District, Zhenjiang City, Jiangsu Province

Patentee after: Zhenjiang Chengtai Automation Technology Co.,Ltd.

Address before: 212132 building 16, new energy industrial park, 300 Gangnan Road, Zhenjiang New District, Jiangsu

Patentee before: ZHENJIANG CINNIC AUTOMATIC TECHNOLOGY Co.,Ltd.

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CP01 Change in the name or title of a patent holder

Address after: 212000 building 16, SME Innovation Park, No. 300, Gangnan Road, New District, Zhenjiang City, Jiangsu Province

Patentee after: Jiangsu Chengtai Automation Technology Co.,Ltd.

Address before: 212000 building 16, SME Innovation Park, No. 300, Gangnan Road, New District, Zhenjiang City, Jiangsu Province

Patentee before: Zhenjiang Chengtai Automation Technology Co.,Ltd.

CP01 Change in the name or title of a patent holder