CN201364228Y - Tightness testing device of lithium-ion power batteries - Google Patents

Tightness testing device of lithium-ion power batteries Download PDF

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Publication number
CN201364228Y
CN201364228Y CNU2008201444103U CN200820144410U CN201364228Y CN 201364228 Y CN201364228 Y CN 201364228Y CN U2008201444103 U CNU2008201444103 U CN U2008201444103U CN 200820144410 U CN200820144410 U CN 200820144410U CN 201364228 Y CN201364228 Y CN 201364228Y
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CN
China
Prior art keywords
battery
lithium
base plate
backplane
tool disk
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Expired - Fee Related
Application number
CNU2008201444103U
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Chinese (zh)
Inventor
曹远敏
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Tianjin Lishen Battery JSCL
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Tianjin Lishen Battery JSCL
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Priority to CNU2008201444103U priority Critical patent/CN201364228Y/en
Application granted granted Critical
Publication of CN201364228Y publication Critical patent/CN201364228Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a tightness testing device of lithium-ion power batteries, which is characterized by comprising an external framework and a backplane, wherein the backplane is positioned at the bottom of the external framework, and a positioning strip is respectively arranged at the left end and the right end of the backplane; a battery tooling disc is fixed in the middle of the backplane, and at least one battery is fixed on the battery tooling disc; two cylinder guiding shafts which are vertical to the upper surface of the backplane are also fixed at the left end and the right end of the backplane, and respectively pass through the left end and the right end of a testing rack, and a moving cylinder is arranged on the lower surface of the top of the external framework; the bottom of the moving cylinder is fixedly connected with the testing rack, and at least one plug is distributed on the testing rack at equal interval; and a circular sealing ring is arranged at the top of each plug, and the plugs are externally connected with a compressed air pipe which is communicated with an external sealing tightness tester. The utility model can test the tightness of the lithium-ion power batteries, eliminates the hidden danger caused by bad batteries, and ensures the production quality of the batteries.

Description

A kind of device for detecting sealability of lithium-ion-power cell
Technical field
The utility model relates to battery manufacturing technology field, particularly relates to a kind of device for detecting sealability of lithium-ion-power cell.
Background technology
Advantages such as lithium ion battery has voltage height, specific energy height, recycles often, storage time is long, not only on portable electric appts, be used widely, and being widely used in big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool, lithium-ion-power cell especially wherein is the main direction of present each macrocell producer development.
One big technical matters of existing lithium-ion-power cell development is exactly the sealing problem of battery container; A main link is exactly that laser bonding is carried out in the connection cooperation place between battery cover and the battery case in the current driving force battery production process, but because the laser bonding effect is subjected to all multifactor influences, as laser energy stability, battery cap cooperate degree, battery cap metal ingredient, operating personnel's technical merit, design of battery in place frock and process water equality, under the influence of these factors, place, laser bonding slit between battery case and the battery cover exists easily as micropore, weld defectss such as sand holes, these defectives process behind battery liquid-filling, can cause electric liquid seepage in battery storage and the use, cause the exhaustion of battery electricity liquid, cycle life is low, self-discharge of battery is big, bad phenomenon such as thickness bulging finally cause battery failure and the safety problem that causes other.
Though use the cap laser welding process of present lithium-ion-power cell, there are bad phenomenon such as micropore, sand holes in place, part battery welding slit, thereby cause easily scrap behind the battery liquid-filling or be assembled into the finished product battery after lost efficacy, and there is a potential safety hazard, but, present laser bonding operation is not examined the welding effect at place, cap welding slit after the cap laser bonding entirely, and the failure welding problem that can not effectively control between the battery cap takes place.
Therefore, press for the device for detecting sealability of developing a kind of lithium-ion-power cell at present, can carry out sealing to lithium-ion-power cell and detect, will exist the battery of bad problem to pick out, thereby welding quality is accomplished effective control, guarantee the quality of production of battery.
The utility model content
In view of this, the purpose of this utility model provides a kind of device for detecting sealability of lithium-ion-power cell, can carry out sealing to lithium-ion-power cell detects, pick out there being the battery of bad problem, thereby welding quality is accomplished effective control, eliminate the use hidden danger that bad battery brings, guarantee the quality of production of battery, be of great practical significance.
For this reason, the utility model provides a kind of device for detecting sealability of lithium-ion-power cell, include external frame 1, base plate 2, described base plate 2 is positioned at the bottom of external frame 1, the two ends, the left and right sides of described base plate 2 are respectively arranged with positioning strip 3, the centre position fixed placement of described base plate 2 has battery tool disk 9, be set with at least one battery on this battery tool disk 9, fix by 3 pairs of battery tool disk 9 of described positioning strip, the two ends, the left and right sides of this base plate 2 also are set with two cylinder leading axles 5 perpendicular to plate upper surface, these two cylinder leading axles 5 run through two ends, testing jig 6 left and right sides respectively, the top lower surface of described external frame 1 is installed and is provided with a motion cylinder 4, fixedly connected with testing jig 6 in the bottom of this motion cylinder 4, described testing jig 6 first-class at least one block head 7 that are intervally distributed with, the top of described block head 7 is provided with circular O-ring seal 8, sealing circle 8 is used for the battery liquid-filling hole 11 at sealed cell body 10 tops, described block head 7 external compressed air hoses, this compressed air hose is connected with external sealing detection instrument.
Preferably, described external frame 1 is the framework of stainless steel, and described testing jig 6 is the metallic test frame.
Preferably, described battery tool disk 9 with its on battery clamping mutually.
Preferably, be set with five batteries on the described battery tool disk 9.
Preferably, the shape of described O-ring seal 8 size is complementary with the shape size in battery liquid-filling hole 11.
The technical scheme that is provided by above the utility model as seen, the utility model provides a kind of device for detecting sealability of lithium-ion-power cell, can carry out sealing to lithium-ion-power cell detects, pick out there being the battery of bad problem, thereby welding quality is accomplished effective control, eliminate the use hidden danger that bad battery brings, guarantee the quality of production of battery, be of great practical significance.
Description of drawings
The front elevation of the device for detecting sealability of a kind of lithium-ion-power cell that Fig. 1 provides for the utility model;
The schematic perspective view of the device for detecting sealability of a kind of lithium-ion-power cell that Fig. 2 provides for the utility model;
The local enlarged diagram of testing jig and peripheral part in the device for detecting sealability of a kind of lithium-ion-power cell that Fig. 3 provides for the utility model;
The schematic perspective view of the fluid injection pass lithium-ion-power cell that device for detecting sealability was used of a kind of lithium-ion-power cell that Fig. 4 provides for the utility model.
Embodiment
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.
Referring to Fig. 1 to Fig. 4, the utility model provides a kind of device for detecting sealability of lithium-ion-power cell, include external frame 1, base plate 2, positioning strip 3, motion cylinder 4, cylinder leading axle 5, testing jig 6, block head 7, O-ring seal 8, battery tool disk 9, described base plate 2 is positioned at the bottom of described external frame 1, the two ends, the left and right sides of described base plate 2 are respectively arranged with a positioning strip 3, the centre position fixed placement of described base plate 2 has battery tool disk 9, be connected with five batteries on this battery tool disk 9, fix by 3 pairs of battery tool disk 9 of described positioning strip.
The two ends, the left and right sides of this base plate 2 also are set with two cylinder leading axles 5 perpendicular to plate upper surface, these two cylinder leading axles 5 run through the two ends, the left and right sides of a testing jig 6 respectively, referring to Fig. 3, described testing jig 6 is first-class to be intervally distributed with five block heads 7, the top of described block head 7 is provided with circular O-ring seal 8, sealing circle 8 is used for the battery liquid-filling hole 11 at sealed cell body 10 tops, and its shape size is complementary with the shape size in battery liquid-filling hole 11.
In addition, the top lower surface of described external frame 1 is installed and is provided with a motion cylinder 4, fixedlys connected with testing jig 6 in the bottom of this motion cylinder 4, therefore, and the direction positioning action when above-mentioned cylinder leading axle 5 plays 4 motions of motion cylinder.
Need to prove, when motion cylinder 4 presses down, realize the battery liquid-filling hole 11 at battery body 10 tops is sealed by the pressure drive block head 7 and the O-ring seal 8 of motion cylinder 4.
Need to prove, in the utility model, described block head 7 external compressed air hoses, this compressed air hose is connected with external sealing detection instrument (as the Japanese COSMO LS-1863A of company leak locator).The utility model is by cooperating with external sealing detection instrument, lithium-ion-power cell is carried out the positive seal detection, after test is finished, according to leak locator warning indication non-defective unit battery and bad battery are separated, finish sealing testing process to lithium-ion-power cell.
In the utility model, described external frame 1 is the framework of stainless steel, and described testing jig 6 is the metallic test frame.
In the utility model, the sealing of using the utility model once can test 5 batteries, testing efficiency can reach 10PPM; On the specific implementation, the utility model can realize that respectively control device starts and stops by a start button and a stop button, concrete control mode is: by starting button, starting motion cylinder 4 presses down and the leak locator start detection, after detection is finished, the motion cylinder rises automatically, by stop button can implement device promptly stop.
In order to understand the technical solution of the utility model better, set forth the detection principle of the Japanese COSMO LS-1863A of a company leak locator below.
The detection principle of the Japan COSMO LS-1863A of company leak locator is that differential pressure detects, at differential pressure pick-up of the inner existence of this detector, in the both sides of sensor a loop is arranged respectively, article one, the loop connects test battery, other one connects standard cell (being the good battery of normal sealing), pressurizeed in two loops simultaneously, be pressurized to certain pressure, stopping pressurization simultaneously leaves standstill, and pressurization place is cut off, and the sample battery is arranged, test battery, sensor, and the loop system of composition that connects the three, leave standstill in the process, sensor detects the pressure in sample battery and two loops of test battery, simultaneously pressure difference value is shown in the numerical value mode, when pressure difference value surpasses the leakage difference standard of system's setting, system alarm, this test battery is bad battery, has the bad leakage phenomenon of sealing; As reveal differential pressure value within the equipment scope, and then test battery is the non-defective unit battery, battery sealing-performance is good.
Embodiment:
With electrokinetic cell aluminum hull LP2770102AB size battery is example, at first battery is placed in the battery tool disk 9, battery liquid-filling hole 11 openings of battery up, battery tool disk 9 is positioned between two positioning strips 3 then, fix by two positioning strips 3, press start button then, motion cylinder 4 drives testing jig 6 and seal head 7 presses down, realize the shutoff in 8 pairs of battery liquid-filling holes 11 of circular seal ring at block head 7 tops, after shutoff is finished, leak the detection of instrument startup sealing by five checks that compressed air hose links to each other with block head, according to leak locator warning indication non-defective unit battery and bad battery are separated, after detection was finished, these five check meters were indicated testing result respectively, and motion cylinder 4 rises, by manually battery tool disk 9 being taken off, then battery is carried out sorting, after sorting is finished, install battery tool disk 9 and detect next time; So circulation realizes that all lithium-ion-power cells are carried out sealing to be examined entirely.
In sum, the utility model can with as sealing detection instrument such as the Japanese COSMO LS-1863A of company leak locator be used, use malleation that all lithium-ion-power cells are carried out sealing and detect, effectively bad battery is picked out, eliminate the use hidden danger that bad battery brings;
In addition, the utility model can check effectively lithium-ion-power cell the laser bonding effect, welding quality is accomplished effective control, help reducing production cost of cells and guarantee the quality of production of battery, be of great practical significance.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (5)

1, a kind of device for detecting sealability of lithium-ion-power cell, it is characterized in that, include external frame (1), base plate (2), described base plate (2) is positioned at the bottom of external frame (1), the two ends, the left and right sides of described base plate (2) are respectively arranged with positioning strip (3), the centre position fixed placement of described base plate (2) has battery tool disk (9), be set with at least one battery on this battery tool disk (9), by described positioning strip (3) battery tool disk (9) is fixed, the two ends, the left and right sides of this base plate (2) also are set with two cylinder leading axles (5) perpendicular to plate upper surface, these two cylinder leading axles (5) run through a testing jig (6) two ends, the left and right sides respectively, the top lower surface of described external frame (1) is installed and is provided with a motion cylinder (4), fixedly connected with testing jig (6) in the bottom of this motion cylinder (4), first-class at least one block head (7) that is intervally distributed with of described testing jig (6), the top of described block head (7) is provided with circular O-ring seal (8), sealing circle (8) is used for the battery liquid-filling hole (11) at sealed cell body (10) top, the external compressed air hose of described block head (7), this compressed air hose is connected with external sealing detection instrument.
2, device for detecting sealability as claimed in claim 1 is characterized in that, described external frame (1) is the framework of stainless steel, and described testing jig (6) is the metallic test frame.
3, device for detecting sealability as claimed in claim 1 is characterized in that, described battery tool disk (9) with its on battery clamping mutually.
4, device for detecting sealability as claimed in claim 1 is characterized in that, is set with five batteries on the described battery tool disk (9).
As each described device for detecting sealability in the claim 1 to 4, it is characterized in that 5, the shape size of described O-ring seal (8) is complementary with the shape size in battery liquid-filling hole (11).
CNU2008201444103U 2008-12-12 2008-12-12 Tightness testing device of lithium-ion power batteries Expired - Fee Related CN201364228Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201444103U CN201364228Y (en) 2008-12-12 2008-12-12 Tightness testing device of lithium-ion power batteries

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Application Number Priority Date Filing Date Title
CNU2008201444103U CN201364228Y (en) 2008-12-12 2008-12-12 Tightness testing device of lithium-ion power batteries

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730694A (en) * 2013-12-27 2014-04-16 深圳市光大激光科技股份有限公司 Lithium battery welding/detecting/marking integrated machine
CN103743532A (en) * 2013-12-11 2014-04-23 思柏精密模具注塑(无锡)有限公司 Closed container air-leakage detection apparatus
CN103776593A (en) * 2014-02-13 2014-05-07 江苏博众汽车部件有限公司 Automatic and quick airtightness detection device
CN104359632A (en) * 2014-11-28 2015-02-18 天津市津品源科技发展有限公司 Multi-station helium inspection tool for battery covers
CN105334003A (en) * 2015-12-09 2016-02-17 天津市捷威动力工业有限公司 Power battery package sealing detection device
CN105716801A (en) * 2016-04-25 2016-06-29 天能集团江苏科技有限公司 Automatic detection device for air tightness of battery
CN113188727A (en) * 2021-04-08 2021-07-30 苏州领湃新能源科技有限公司 Novel tool and method for detecting positive pressure tightness after nail pressing of lithium battery

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743532A (en) * 2013-12-11 2014-04-23 思柏精密模具注塑(无锡)有限公司 Closed container air-leakage detection apparatus
CN103730694A (en) * 2013-12-27 2014-04-16 深圳市光大激光科技股份有限公司 Lithium battery welding/detecting/marking integrated machine
CN103730694B (en) * 2013-12-27 2016-01-06 深圳市光大激光科技股份有限公司 A kind of lithium battery welding certification mark all-in-one
CN103776593A (en) * 2014-02-13 2014-05-07 江苏博众汽车部件有限公司 Automatic and quick airtightness detection device
CN104359632A (en) * 2014-11-28 2015-02-18 天津市津品源科技发展有限公司 Multi-station helium inspection tool for battery covers
CN105334003A (en) * 2015-12-09 2016-02-17 天津市捷威动力工业有限公司 Power battery package sealing detection device
CN105716801A (en) * 2016-04-25 2016-06-29 天能集团江苏科技有限公司 Automatic detection device for air tightness of battery
CN113188727A (en) * 2021-04-08 2021-07-30 苏州领湃新能源科技有限公司 Novel tool and method for detecting positive pressure tightness after nail pressing of lithium battery

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091216

Termination date: 20111212