CN212459153U

CN212459153U - Utmost point ear anchor clamps and utmost point ear tensile test device

Info

Publication number: CN212459153U
Application number: CN202020912664.6U
Authority: CN
Inventors: 胡治怿; 李航; 申园园; 周仁全; 冯莉
Original assignee: Anhui Taineng New Energy Technology Co ltd
Current assignee: Svolt Energy Technology Maanshan Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-02-02
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a utmost point ear anchor clamps and utmost point ear pulling force testing arrangement belongs to utmost point ear pulling force check out test set technical field. The tab clamp comprises a first clamping piece and a second clamping piece, the first clamping piece is connected with the second clamping piece, and grooves are formed in the first clamping piece and the second clamping piece. The supporting rod on the base of the tab tension testing device provides stable support, the lifting bolt drives the lifting platform to provide lifting power for the tension display, and tab tension testing can be conveniently and accurately carried out.

Description

Utmost point ear anchor clamps and utmost point ear tensile test device

Technical Field

The utility model belongs to the technical field of utmost point ear pulling force check out test set, more specifically says, relates to an utmost point ear anchor clamps and utmost point ear pulling force testing arrangement.

Background

The tab is commonly used in the battery and mainly plays a role in connecting two parts in the battery, and playing a role in electric connection and electronic conduction between the two parts. In the cylindrical lithium ion battery, the tab is used for being connected with the steel shell and the cap to conduct electrons. Welding of the tabs of the positive electrode and the negative electrode and the foil of the positive electrode and the negative electrode is realized through friction welding, the welding strength of the tabs and the foil has serious influence on the internal resistance of the whole battery cell, poor welding of the tabs causes higher internal resistance of a winding core, higher internal resistance of the winding core causes more heat generation in the charging and discharging process, and when the battery cell cannot radiate heat in time, potential safety hazards such as thermal runaway of the battery cell can be caused; even if no potential safety hazard is generated, the current distribution of the battery cell is not uniform due to poor contact between the tabs and the foil in the charging and discharging processes, and the local current is too large, so that the later cycle performance of the battery cell is seriously reduced, and the service life of the battery cell is influenced; therefore, the safety performance and the cycle performance of the battery cell are seriously influenced by the quality of the welding of the tabs; therefore, the welding between the electrode lug and the foil needs to be subjected to tension detection, and the accuracy rate of the electrode lug tension detection performed by general tension detection equipment is not high.

The Chinese patent application numbers are: 201621071357.X, publication date: 2017.03.22, which comprises a rotary disk for conveying the cylindrical battery and a detection mechanism arranged beside the rotary disk, wherein the detection mechanism comprises a pressing block for pressing the cylindrical battery, a clamping block for clamping the positive plate of the cylindrical battery and a tension meter for stretching the clamping block to move up and down, the pressing block and the clamping block are respectively driven by a pressing cylinder and a clamping cylinder, and the tension meter, the pressing cylinder and the clamping cylinder are electrically connected with a control unit. The anode lug is pulled up through the tension meter, the cylindrical battery is compressed through the compression block, and the welding strength of the cathode lug is measured by setting the tensile value of the tension meter; the device is suitable for detecting that the pole lug of the cylindrical battery is installed into the shell, and can not only carry out tension test on connection of the pole lug and the foil.

The Chinese patent application numbers are: 201822251030.6, the announcement date is: 2019.11.12's a detection device for peeling force between polymer tab glue and metal strip', which comprises a shell, a support frame fixedly connected to the inner side wall of the two sides of the top of the shell, a peeling blade fixedly connected to the end of the two adjacent support frames, and an inward inclined surface arranged on the side wall of the peeling blade close to one side of the support frames. The stripping force of the metal belt and the polymer tab adhesive can be detected through the arranged tension meter, the metal belt and the polymer tab adhesive can be rapidly stripped through the arranged stripping blade, and the tab can be firmly clamped through the arranged metal belt clamping block and the stripping blade; however, in the process of clamping the tab, the tab is easily damaged, and the measured data is inaccurate.

Disclosure of Invention

1. Problems to be solved

The problem that the accuracy is not high is tested to current utmost point ear, the utility model provides an utmost point ear anchor clamps and utmost point ear tensile test device can be more accurate carry out the tensile test of utmost point ear.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model discloses a tab clamp, tab clamp includes first holder and second holder, first holder meets with the second holder, all is equipped with the recess on first holder and the second holder. The first clamping piece and the second clamping piece can be integrated or split, but the integrated type must ensure that the clamped port can be opened and closed, and the clamping of the pole lug is not influenced.

As a further explanation of the utility model, be provided with first clamping face on the first clamping piece, be provided with the second clamping face on the second clamping piece, the recess setting on the first clamping piece is on first clamping face, and the recess setting on the second clamping piece is on the second clamping face, the recess width on first clamping face and the second clamping face is the same.

As a further explanation of the utility model, the first clamping piece is hinged with the second clamping piece and is connected through the connecting piece.

As a further explanation of the utility model, the connecting piece is fastening bolt, be provided with the screw hole on the first holder, be equipped with the through-hole on the second holder, fastening bolt pass the through-hole and with threaded connection between the screw hole of first holder.

As a further explanation of the present invention, the first clamping member and the hinged end of the second clamping member are provided with a fixing member.

The utility model discloses a utmost point ear tensile force testing arrangement, press from both sides including base, bracing piece, supporting platform, pulling force display, utmost point ear clamp and get ware, anchor clamps fixer and utmost point ear anchor clamps, be provided with bracing piece and anchor clamps fixer on the base, be connected with supporting platform on the bracing piece, supporting platform one side is provided with the pulling force display, pulling force display below is connected utmost point ear clamp and is got the ware, be fixed with utmost point ear anchor clamps on the anchor clamps fixer, utmost point ear clamp is got the ware and is located utmost point ear anchor clamps top.

As a further explanation of the utility model, the support fixing bolt is further included, and the support fixing bolt is located one side of the support platform and fixes the support rod.

As the utility model discloses a further explanation, lifting bolt, bearing, twist grip and lift platform, lifting bolt one end embedding base, the other end meet with the bearing, the bearing is close to supporting platform one side to meet with the twist grip, the pulling force display is connected to lift platform one end, bracing piece and lifting bolt run through lift platform.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a tab clamp, the recess on the first holder of tab clamp and the second holder forms the space that the cross section is sealed, when placing the pole piece between the first holder and the second holder between the second holder and the first clamping face, the tab is placed in the recess, form the state of only carrying out the centre gripping to the pole piece, because the tab has certain width, in order to guarantee the stability of tab connection, the connection between tab and the pole piece is not single point type connection, take the welding as an example, connect through a plurality of solder joints between tab and the pole piece, then carrying out the tensile test of tab, general clamping equipment grasps one side of pole piece, make the solder joint of tab one side break off earlier, all the solder joints break off gradually, the tensile data obtained is inaccurate, all carry out the centre gripping with the pole piece of both sides of tab, carry out the tensile test to the middle tab, the problem that the tension test data is inaccurate because the welding spot of one side direction is always disconnected first can be avoided;

(2) the utility model discloses a tab clamp, the first clamping piece is connected through the articulated mode with the second clamping piece, ensures that the pole piece clamping side can conveniently open and close, adds the connecting piece, adjusts the opening degree and the closure of first clamping piece and second clamping piece through the fastening bolt, and the structure is more stable;

(3) the utility model discloses a tab clamp, the groove width on the first clamping surface is the same with the groove width on the second clamping surface, ensures that in the clamping process, the pole piece can not have the dislocation block stress uneven, the problem that the follow-up tension test is influenced;

(4) the utility model discloses a utmost point ear tensile force testing arrangement, the bracing piece on the base provides the outrigger, and the lifting bolt drives lift platform and provides ascending power for the pulling force display, can conveniently realize utmost point ear tensile test.

Drawings

Fig. 1 is a schematic view of an embodiment 1 of a tab holder of the present invention showing an opened state with a connector removed;

fig. 2 is a schematic view of the overall structure of an embodiment 1 of a tab clamp in a closed state according to the present invention;

FIG. 3 is a partial structural view of a tab and pole piece combination;

fig. 4 is a schematic view of a state that a pole piece is inserted in an embodiment 1 of a pole lug clamp of the present invention; a

Fig. 5 is the overall structure schematic diagram of the tab tension testing device of the present invention.

In the drawings: 10. a tab clamp; 11. a first clamping member; 12. a first clamping surface; 13. a second clamping member; 14. a second clamping surface; 15. a groove; 16. a connecting member; 17. a fixing member;

20. a base; 21. a support bar; 22. a support platform; 23. supporting the fixing bolt; 24. a lifting bolt; 25. a bearing; 26. rotating the handle; 27. a tension display; 28. a tab clamping device; 29. a clamp holder; 30. a lifting platform.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

First holder 11 and second holder 13 in this application do not mean a specific certain part in utmost point ear anchor clamps 10, and first holder 11 and second holder 13 can be replaced, but the plane that is used for the centre gripping on the first holder 11 is first clamping face 12, and the plane that is used for the centre gripping on the second cheek tooth spare is second clamping face 14.

The single-point connection has the advantages that all directions of stress are generally uniform in the process of performing tension test, general test results are accurate, but the pole lugs have certain width, and only one point of connection cannot be used for ensuring the connection strength between the pole lugs and the pole pieces. Taking the welding tension test of multiple welding points between the tab and the pole piece as an example, a general tension test device can only clamp one side of the pole piece as shown in fig. 3, and then pull the tab to perform the tension test of the tab, but in the process of testing, because one side of the pole piece is stressed, the welding point on one side of the tab is broken first in the tension test process, and other welding points are broken gradually, so that the tension data obtained by testing is inaccurate, the welding strength between the tab and the pole piece cannot be truly reflected, and certain influence is generated on the production.

Example 1

As shown in fig. 1 to 4, a tab holder 10 of the present embodiment includes a first holding member 11, a second holding member 13, a connecting member 16, and a fixing member 17. The first clamping piece 11 and the second clamping piece 13 are both parts which have the clamping effect as shown in fig. 1, and other shapes are also possible, the first clamping piece 11 and the second clamping piece 13 can be integrated or split, but the integrated structure must ensure that the clamped port can be opened and closed, and the clamping of the tab is not affected. This embodiment is split type, as shown in fig. 1, it is articulated between first holder 11 and the second holder 13, the closure state is sharp mouth form, conveniently carry out the centre gripping of pole piece, reduce the use of material, the closure state, the face that first holder 11 and second holder 13 contacted is first clamping face 12 and second clamping face 14 respectively, set up recess 15 on first clamping face 12 and second clamping face 14 respectively, under utmost point ear anchor clamps 10 closure state, the cross-section of two recess 15 is closed figure, the width of two recess 15 contacts equals promptly, ensure in the clamping-process, the dislocation block atress is uneven can not appear in the pole piece, produce the problem of influence to follow-up tensile test. Meanwhile, the pole lugs are arranged in the grooves 15, a state that only the pole lugs are clamped is formed, the pole lugs on two sides of the pole lugs are all clamped, tension test is conducted on the pole lugs in the middle, and the problem that tension test data are inaccurate due to the fact that welding spots in one side direction are always disconnected first can be avoided.

First holder 11 is connected through articulated mode between the second holder 13, ensure that the pole piece centre gripping side can conveniently open and close, add connecting piece 16, connecting piece 16 is fastening bolt, be provided with the screw hole on the first holder 11, be provided with the through-hole on the second holder 13, fastening bolt passes the screw hole of first holder 11 and the through-hole of second holder 13, adjust the degree of opening and the closure of first holder 11 and second holder 13 through fastening bolt, the structure is more stable. As shown in fig. 2 and 4, the fastening bolt is loosened, the first clamping piece 11 and the second clamping piece 13 are opened to a certain angle, the pole piece is placed in the pole piece, and the pole lug is placed at the position corresponding to the groove 15. A round bar or a bar with ridges can be arranged on the first clamping piece 11 or the second clamping piece 13 for fixing the tab clamp 10 on other parts, and the fixing piece 17 of this embodiment is a round bar arranged at one end of the first clamping piece 11 far away from the groove 15.

Example 2

A tab holder 10 of the present embodiment has substantially the same structure as embodiment 1 except that a fixing member 17 is a quadrangular prism fixed to one end of a first holding member 11 as shown in fig. 1.

Example 3

As shown in fig. 5, the tab tension testing apparatus of the present embodiment includes a base 20, a support rod 21, a support platform 22, a support fixing bolt 23, a lifting bolt 24, a bearing 25, a rotating handle 26, a tension indicator 27, a tab clamping device 28, a clamp fixer 29, a lifting platform 30, and the tab clamp 10 as described in embodiment 1 or 2.

The base 20 is used for providing support and installation basis, and the bracing piece 21 sets up on base 20 for the support of other parts, and supporting platform 22 cup joints on bracing piece 21 to fix through supporting fastening bolt, jack bolt 24 is located between the bracing piece 21, and one end embedding base 20, the other end pass jack platform 30 and connect bearing 25, and bearing 25 one side is adjacent with supporting platform 22 and meets with twist grip 26. Lifting platform 30 cup joints in the bracing piece 21 outside, and the jack bolt 24 through middle cup joint adjusts the height, and pulling force display 27 sets up in lifting platform 30 one side, and the utmost point ear clamp is got 28 to pulling force display 27 lower extreme connection for the centre gripping utmost point ear. The tab clamp 10 is correspondingly arranged below the tab clamping device 28, the tab clamp 10 is fixed on the clamp fixer 29, and the clamp fixer 29 is fixed on the base 20.

The tension display 27 uses an existing instrument capable of testing tension and having a display function, one end of the tab clamping device 28 is connected to the tension display 27, and the other end of the tab clamping device is capable of clamping a tab, as shown in fig. 5, the tab clamping device 28 of the present embodiment has substantially the same structure as the tab clamp 10, except that the tab clamping device 28 is not provided with the groove 15. The fixing of utmost point ear anchor clamps 10 is realized to anchor clamps fixer 29, makes things convenient for utmost point ear anchor clamps 10 to dismantle, as shown in fig. 5, and anchor clamps fixer 29 center is equipped with the hole, and one end sets up the bolt, inserts the mounting 17 of utmost point ear anchor clamps 10 in the hole of anchor clamps fixer 29 to it is fixed to use the bolt to extrude, can realize the fixed of utmost point ear anchor clamps 10.

During the use, place the pole piece in utmost point ear anchor clamps 10 to make utmost point ear arrange in recess 15, insert 17 round bars of mounting of utmost point ear anchor clamps 10 in the hole of anchor clamps fixer 29, fasten with the bolt, adjust twist grip 26, it is that lifting bolt 24 drives lift platform 30 and rises or descend, put into utmost point ear and carry out the centre gripping and fix in utmost point ear clamp presss from both sides the ware 28, adjust twist grip 26, make lift platform 30 rise, until utmost point ear break, the biggest tension value of tension display 27 record, accomplish the tension test to utmost point ear.

The above examples describe the present invention and its embodiments, and the description is not intended to be limiting. It should be noted that, for those skilled in the art, without departing from the inventive concept of the present invention, the structural modes and embodiments similar to the technical solutions should be designed without creativity, and all shall fall within the protection scope of the present invention.

Claims

1. A tab clamp (10), characterized by: utmost point ear anchor clamps (10) include first holder (11) and second holder (13), first holder (11) meet with second holder (13), all are equipped with recess (15) on first holder (11) and the second holder (13).

2. A tab clamp (10) as claimed in claim 1, wherein: be provided with first clamping face (12) on first holder (11), be provided with second clamping face (14) on second holder (13), recess (15) on first holder (11) set up on first clamping face (12), and recess (15) on second holder (13) set up on second clamping face (14), recess (15) width on first clamping face (12) and second clamping face (14) is the same.

3. A tab clamp (10) as claimed in claim 1, wherein: the first clamping piece (11) is hinged with the second clamping piece (13) and is connected with the second clamping piece through a connecting piece (16).

4. A tab clamp (10) as claimed in claim 3, wherein: the connecting piece (16) is a fastening bolt, a threaded hole is formed in the first clamping piece (11), a through hole is formed in the second clamping piece (13), and the fastening bolt penetrates through the through hole and is in threaded connection with the threaded hole of the first clamping piece (11).

5. A tab clamp (10) as claimed in claim 3, wherein: and a fixing piece (17) is arranged at one end of the first clamping piece (11) hinged with the second clamping piece (13).

6. The utility model provides a utmost point ear tension testing arrangement which characterized in that: the tab clamp comprises a base (20), a supporting rod (21), a supporting platform (22), a tension display (27), a tab clamping device (28), a clamp fixer (29) and the tab clamp (10) as claimed in any one of claims 1 to 5, wherein the supporting rod (21) and the clamp fixer (29) are arranged on the base (20), the supporting platform (22) is connected onto the supporting rod (21), the tension display (27) is arranged on one side of the supporting platform (22), the tab clamping device (28) is connected below the tension display (27), the tab clamp (10) is fixed onto the clamp fixer (29), and the tab clamping device (28) is located above the tab clamp (10).

7. The tab tension testing device as claimed in claim 6, wherein: the support device is characterized by further comprising a support fixing bolt (23), wherein the support fixing bolt (23) is located on one side of the support platform (22) and is used for fixing the support rod (21).

8. The tab tension testing device as claimed in claim 6, wherein: lifting bolt (24), bearing (25), twist grip (26) and lift platform (30), lifting bolt (24) one end embedding base (20), the other end meets with bearing (25), bearing (25) are close to supporting platform (22) one side to meet with twist grip (26), pull force display (27) is connected to lift platform (30) one end, bracing piece (21) and lifting bolt (24) run through lift platform (30).