CN221100363U - Fatigue test tool for battery terminal - Google Patents

Abstract

The utility model provides a battery terminal fatigue test fixture, which relates to the technical field of battery test, wherein a clamp is arranged, a containing cavity on the clamp can be used for inserting a battery, one end of the battery extends out of the clamp, a first connecting piece can be inserted into the clamp along a first direction, the battery is clamped by the clamp through the first connecting piece, a second connecting piece can be inserted into the clamp along a second direction, the first direction and the second direction are intersected, the second connecting piece can fix the clamp on a fatigue machine, the fatigue machine can be connected with a terminal of the battery through a clamping part, so that the fatigue test can be performed on the terminal of the battery through the fatigue machine.

Description

Fatigue test tool for battery terminal

Technical Field

The utility model relates to the technical field of battery testing, in particular to a battery terminal fatigue testing tool.

Background

The power lithium battery is an emerging industry which rapidly develops in recent years and is widely applied to the fields of electric automobiles, hybrid electric automobiles, electric tools, energy storage equipment and the like. Among them, cylindrical power cells are receiving attention because of their high capacity, long cycle life and wide use environment temperature.

Nowadays, with more and more application scenes of the cylindrical power lithium battery, people begin to pay attention to whether the strength of the battery can meet the application of various scenes, so that the battery can be subjected to mechanical property test after being molded, and the fatigue test of the positive end and the negative end of the battery is the focus of the battery.

The current cylindrical battery terminal fatigue test scheme adopts a distributed test method: 1. the thrust test is carried out on the terminal by adopting the traditional thrust machine to transversely use thrust, only one side of the terminal can be subjected to the thrust test, and the frequency and the force cannot be accurately controlled; 2. torsion test, the manual torque control of the torque wrench is adopted to carry out torsion test on the terminal, and the torque and the frequency can not be accurately controlled.

Chinese patent CN212008164U discloses a torsion testing mechanism for battery terminals, which is to clamp a clamping cover on a terminal, and connect two sub-clamping boards through bolts, so that the clamping cover and the terminal can be firmly connected, the torsion wrench drives the clamping cover to rotate, and the clamping cover drives the terminal to rotate, thereby directly testing the connection stability of the terminal. However, the accuracy of the battery strength cannot be guaranteed by the test mode, so that the labor cost is increased, and hidden danger of the subsequent battery use is avoided.

Disclosure of utility model

In view of this, the utility model provides a battery terminal fatigue test fixture to solve the problem that accurate data test cannot be performed on a battery terminal.

The technical scheme of the utility model is realized as follows: the utility model provides a fatigue test fixture for a battery terminal, which is characterized in that: the clamping device comprises a clamp, a first connecting piece, a second connecting piece and a clamping part;

The clamp is provided with a containing cavity and a clearance part, the containing cavity is used for inserting a battery, one end of the battery extends out of the clamp, the clearance part extends along the surface of the clamp, and the clearance part is communicated with the containing cavity;

The first connecting piece is inserted into the clamp along a first direction and is used for adjusting the width of the gap part so that the clamp clamps the battery;

the second connecting piece is inserted into the clamp along a second direction, the second direction and the first direction are intersected, and the second connecting piece is used for fixing the clamp on the fatigue machine;

One end of the clamping part is connected with the terminal of the battery, the other end of the clamping part is in driving connection with the fatigue machine, and the fatigue machine is used for performing fatigue test on the terminal of the battery.

On the basis of the above technical scheme, preferably, along the second direction, the gap portion extends from one end of the clamp to the other end of the clamp so as to divide the clamp into a first clamp arm and a second clamp arm, one side of the first clamp arm is provided with a first connecting hole, one side of the second clamp arm is provided with a second connecting hole, the first connecting piece is inserted into the first connecting hole and the second connecting hole, and the other side of the first clamp arm and the other side of the second clamp arm are integrally connected.

On the basis of the technical scheme, preferably, the first connecting hole and the second connecting hole are through holes, and the first connecting piece is in threaded fit with the first connecting hole and the second connecting hole respectively.

On the basis of the above technical scheme, preferably, the first clamping arm is provided with a plurality of first connecting holes, a plurality of first connecting holes are arranged along the second direction at intervals, the second clamping arm is provided with a plurality of second connecting holes, a plurality of second connecting holes and a plurality of first connecting holes are arranged in a one-to-one correspondence manner, and a plurality of first connecting pieces are respectively inserted in a plurality of first connecting holes and a plurality of second connecting holes in a one-to-one correspondence manner.

On the basis of the technical scheme, preferably, the battery terminal fatigue test fixture further comprises a fixing plate, wherein the fixing plate is fixed on a workbench of the fatigue machine through bolts, and the second connecting piece extends along the second direction to be connected with the fixing plate.

In the above aspect, preferably, one end of the clamping portion is bonded to a terminal of the battery.

On the basis of the above technical scheme, preferably, one end of the clamping part is adhered to the terminal of the battery through AB glue, and the clamping part and the battery are placed in a high-temperature box to be heated.

On the basis of the above technical solution, preferably, an end portion of the clamping portion, which is far away from the battery, is provided with a corrugated structure.

On the basis of the technical scheme, preferably, the fatigue machine is provided with a chuck, and the chuck is used for clamping one end of the clamping part provided with the wavy structure.

On the basis of the above technical solution, preferably, the fatigue test includes a push-pull test and a torque test, and the fatigue machine is used for performing the push-pull test or the torque test on the terminal of the battery through the clamping part.

Compared with the prior art, the fatigue test tool for the battery terminal has the following beneficial effects:

(1) Through setting up the anchor clamps, hold the cavity on the anchor clamps and can supply the battery to insert, and the one end of battery stretches out to the anchor clamps outside, clearance portion and hold the cavity intercommunication, first connecting piece can insert along first direction and locate the anchor clamps, and the opposite both ends of first connecting piece are located the opposite both sides of clearance portion respectively, can make the anchor clamps press from both sides tight with the battery through first connecting piece, the anchor clamps can be inserted along the second direction to the second connecting piece, first direction and the crossing setting of second direction, the second connecting piece can be fixed in the anchor clamps on the fatigue machine, the fatigue machine can be through the terminal connection of clamping part and battery, thereby can carry out fatigue test to the terminal of battery through the fatigue machine, compare and adopt the manual work to test the terminal of battery, can carry out accurate data test to the terminal of battery through the fatigue machine;

(2) The cavity and the gap part are contained in the clamp, the cavity and the gap part are communicated, the clamp can be divided into the first clamp arm and the second clamp arm by the gap part, the first clamp arm and the second clamp arm are respectively provided with the first connecting hole and the second connecting hole, the first connecting piece is inserted into the first connecting hole and the second connecting hole, and the first connecting piece is respectively in threaded fit with the first connecting hole and the second connecting hole, so that the battery can be clamped or loosened by screwing the first connecting piece, and the operation is very convenient.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a battery terminal fatigue test fixture of the present utility model;

FIG. 2 is a perspective view of the clamp of the present utility model;

fig. 3 is a perspective view of the clamping portion of the present utility model.

Reference numerals:

1. A clamp; 11. a housing cavity; 12. a gap portion; 13. a first clamp arm; 131. a first connection hole; 14. a second clamp arm; 141. a second connection hole; 2. a first connector; 3. a second connector; 4. a clamping part; 41. a wave pattern structure; 5. a battery; 6. a fatigue machine; 61. a chuck; 7. and a fixing plate.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

In the coordinate system XYZ provided herein, the forward direction of the X axis represents the backward direction, the reverse direction of the X axis represents the forward direction, the forward direction of the Y axis represents the right direction, the reverse direction of the Y axis represents the left direction, the forward direction of the Z axis represents the upward direction, and the reverse direction of the Z axis represents the downward direction. Also, it is noted that the terms "first," "second," and the like in the description and claims of the present utility model and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

As shown in fig. 1 and 2, the battery terminal fatigue test fixture of the present utility model comprises a fixture 1, a first connecting piece 2, a second connecting piece 3 and a clamping part 4;

Wherein, the clamp 1 is provided with a containing cavity 11 and a clearance part 12, the containing cavity 11 is used for inserting the battery 5, one end of the battery 5 extends out of the clamp 1, the clearance part 12 extends along the surface of the clamp 1, and the clearance part 12 is communicated with the containing cavity 11;

The first connecting piece 2 is inserted into the clamp 1 along a first direction, and the first connecting piece 2 is used for adjusting the width of the gap part 12 so that the clamp 1 clamps the battery 5;

The second connecting piece 3 is inserted into the fixture 1 along a second direction, the second direction and the first direction are intersected, and the second connecting piece 3 is used for fixing the fixture 1 on the fatigue machine 6;

One end of the clamping part 4 is connected with a terminal of the battery 5, the other end of the clamping part 4 is in driving connection with the fatigue machine 6, and the fatigue machine 6 is used for performing fatigue test on the terminal of the battery 5.

Specifically, the battery terminal fatigue test fixture is used for clamping the battery 5, and fatigue test can be performed on the terminal of the battery 5 through the fatigue machine 6.

Wherein, anchor clamps 1 are equipped with and hold cavity 11 and clearance portion 12, clearance portion 1 extends along the surface of anchor clamps 1, and clearance portion 12 and hold cavity 11 and extend along the same direction, and clearance portion 12 and hold cavity 11 intercommunication, thereby can adjust the interior space size that holds cavity 11 through the size of control clearance portion 12, the interior profile shape that holds cavity 11 can with the outer profile shape looks adaptation of battery 5, in this embodiment, the interior profile shape that holds cavity 11 is cylindrical structure, can be used for supplying cylindrical battery 5 to insert, in other embodiments, the interior profile shape that holds cavity 11 also can be square columnar structure, can be used for supplying square battery 5 to insert.

The first connecting piece 2 can be inserted into the fixture 1 along the first direction, the X-axis direction in fig. 1 is the first direction, two opposite ends of the first connecting piece 2 can be respectively located at two opposite sides of the gap portion 12, more clearly, when the first connecting piece 2 is inserted into the fixture 1, the first connecting piece 2 passes through the gap portion 12, the width of the gap portion 12 can be adjusted through the first connecting piece 2, and when the first connecting piece 2 reduces the width of the gap portion 12, the fixture 1 can be driven to clamp the battery 5.

The second connecting piece 3 may be inserted into the fixture 1 along a second direction, which may intersect the first direction, in this embodiment, the Z-axis direction in fig. 1 is the second direction, the second direction and the first direction are perpendicular to each other, the second connecting piece 3 may extend along the second direction to connect with the fatigue machine 6, so as to fix the fixture 1 to the fatigue machine 6,

The clamping part 4 is long rod-shaped structure, and the one end of clamping part 4 can be connected with the terminal of battery 5, and the other end of clamping part 4 can be connected with the drive of fatigue machine 6 to make fatigue machine 6 can be connected through the terminal drive of clamping part 4 and battery 5, fatigue machine 6 can carry out fatigue test to the terminal of battery 5, compare and adopt the manual work to test the terminal of battery 5, can carry out accurate data test to the terminal of battery 5 through fatigue machine 6.

As shown in fig. 1 and 2, in some embodiments, the gap 12 extends from one end of the clamp 1 to the other end of the clamp 1 along the second direction, so as to divide the clamp 1 into a first clamp arm 13 and a second clamp arm 14, one side of the first clamp arm 13 is provided with a first connecting hole 131, one side of the second clamp arm 14 is provided with a second connecting hole 141, the first connector 2 is inserted into the first connecting hole 131 and the second connecting hole 141, and the other side of the first clamp arm 13 and the other side of the second clamp arm 14 are integrally connected.

Specifically, the gap portion 12 may be provided to extend in the second direction, and more specifically, the gap portion 12 may be provided to extend in the axial direction of the accommodating chamber 11 such that the gap portion 12 may partition the jig 1 into the first and second clamp arms 13 and 14, and the battery 5 is clamped by the first and second clamp arms 13 and 14 when the battery 5 is inserted into the accommodating chamber 11.

One side of the first clamping arm 13 may be provided with a first connecting hole 131, one side of the second clamping arm 14 may be provided with a second connecting hole 141, the first connecting hole 131 and the second connecting hole 141 may be set relatively, so to speak, the first connecting hole 131 and the second connecting hole 141 may be coaxially set, the first connecting member 2 may be inserted into the first connecting hole 131 and the second connecting hole 141 at the same time, so that the first connecting member 2 may connect the first clamping arm 13 and the second clamping arm 14, and the other side of the first clamping arm 13 may be integrally connected with the other side of the second clamping arm 14, so that a gap between the first clamping arm 13 and the second clamping arm 14 may be adjusted by the first connecting member 2, and thus a width of the gap portion 12 may be adjusted.

As shown in fig. 1 and 2, in some embodiments, the first connection hole 131 and the second connection hole 141 are through holes, and the first connection member 2 is screwed with the first connection hole 131 and the second connection hole 141, respectively.

Specifically, the first connecting hole 131 and the second connecting hole 141 are through holes, so that the first connecting piece 2 can be arranged in the first connecting hole 131 and the second connecting hole 141 in a penetrating manner, internal thread structures are arranged in the first connecting hole 131 and the second connecting hole 141, external thread structures are arranged on the outer surface of the first connecting piece 2, the internal thread structures and the external thread structures can be mutually matched, the first connecting piece 2 can be respectively matched with the first connecting hole 131 and the second connecting hole 141 in a threaded manner, the width of the gap portion 12 can be adjusted by screwing the first connecting piece 2, and the size of the gap portion 12 can be conveniently adjusted, so that the clamp 1 can clamp or loosen the battery 5.

As shown in fig. 1 and 2, in some embodiments, the first clamping arm 13 is provided with a plurality of first connecting holes 131, a plurality of first connecting holes 131 are arranged at intervals along the second direction, the second clamping arm 14 is provided with a plurality of second connecting holes 141, a plurality of second connecting holes 141 and a plurality of first connecting holes 131 are arranged in a one-to-one correspondence, and a plurality of first connecting pieces 2 are respectively inserted into a plurality of first connecting holes 131 and a plurality of second connecting holes 141 in a one-to-one correspondence.

Specifically, the first clamping arm 13 may be provided with a plurality of first connecting holes 131, and the plurality of first connecting holes 131 may be disposed along the second direction at intervals, in this embodiment, the plurality of first connecting holes 131 may be disposed in parallel at intervals in sequence, the second clamping arm 14 may be provided with a plurality of second connecting holes 141, the plurality of second connecting holes 141 may be disposed in one-to-one correspondence with the plurality of first connecting holes 131, and more clearly, the plurality of second connecting holes 141 may be disposed in one-to-one coaxial with the plurality of first connecting holes 131, so that each first connecting piece 2 may be sequentially inserted into a corresponding one of the first connecting holes 131 and a corresponding one of the second connecting holes 141, and the clamp 1 may clamp the battery 5 more firmly through the plurality of first connecting pieces 2.

As shown in fig. 1, in some embodiments, the battery terminal fatigue testing fixture further includes a fixing plate 7, the fixing plate 7 is fixed on the working table of the fatigue machine 6 by bolts, and the second connecting member 3 extends along the second direction to be connected with the fixing plate 7.

Specifically, the battery terminal fatigue test fixture may further include a fixing plate 7, the fixing plate 7 may be a square plate, four corners of the fixing plate 7 may be fixed on a workbench of the fatigue machine 6 through bolts, the second connecting member 3 may be inserted on the fixture 1, in this embodiment, a through hole is provided on the fixture 1, the through hole penetrates through the fixture 1 along the second direction, the second connecting member 3 may be inserted in the through hole, and the second connecting member 3 may extend to be connected with the fixing plate 7 along the second direction, thereby connecting the fixture 1 and the fixing plate 7, so that the fixture 1 is mounted on the workbench of the fatigue machine 6, thereby conveniently fixing the fixture 1 on the fatigue machine 6.

As shown in fig. 1, in some embodiments, one end of the clamping portion 4 is bonded to a terminal of the battery 5.

Specifically, one end of the clamping part 4 can be adhered to the terminal of the battery 5 through glue, so that the clamping part 4 and the terminal of the battery 5 are firmly connected together, and the clamping part 4 and the terminal of the battery 5 can be conveniently connected through an adhering mode.

As shown in fig. 1, in some embodiments, one end of the holding portion 4 is bonded to a terminal of the battery 5 by AB glue, and the holding portion 4 and the battery 5 are placed in a high temperature box to be heated.

Specifically, the clamping part 4 can be adhered to the terminal of the battery 5 through AB glue, and the clamping part 4 and the battery 5 are simultaneously placed in a high-temperature box for heating, in this embodiment, the temperature of the high-temperature box can be set to 70 ℃, and the clamping part 4 and the battery 5 are heated for 2 hours, after the battery 5 and the clamping part 4 are cooled, fatigue test can be performed, and after the terminal of the battery 5 is adhered to the conventional test, the conventional test needs to be kept stand for 24 hours, so that the test time can be greatly saved.

As shown in fig. 1 and 3, in some embodiments, an end of the clamping portion 4 remote from the battery 5 is provided with a corrugation 41.

Specifically, the end of the clamping portion 4 away from the battery 5 may be provided with a corrugation structure 41, and more specifically, the outer surface of the end of the clamping portion 4 away from the battery 5 may be provided with a corrugation structure 41, and the corrugation structure 41 may increase the roughness of the surface, so that the clamping portion 4 and the fatigue machine 6 may be connected more firmly.

As shown in fig. 1, in some embodiments, the fatigue machine 6 is provided with a chuck 61, and the chuck 61 is used to clamp an end of the clamping portion 4 provided with the moire structure 41.

Specifically, the fatigue machine 6 may be provided with a chuck 61, the chuck 61 may be used to clamp one end of the clamping portion 4 provided with the corrugation structure 41, and the terminal connection of the fatigue machine 6 and the battery 5 may be facilitated by providing the chuck 61.

In some embodiments, the fatigue test includes a push-pull test and a torque test, and the fatigue machine 6 is configured to perform the push-pull test or the torque test on the terminal of the battery 5 through the clamping portion 4.

Specifically, the fatigue test may include a push-pull test and a torque test, in this embodiment, the fatigue machine 6 may include a first driving portion and a second driving portion, where the first driving portion and the second driving portion are respectively in driving connection with the chuck 61, the chuck 61 is used to be connected with the clamping portion 4, the first driving portion is used to drive the clamping portion 4 to perform the push-pull test on the terminal of the battery 5, and the second driving portion is used to drive the clamping portion 4 to perform the torque test on the terminal of the battery 5, and the push-pull test and the torque test are combined together, and the tool is matched with the tool, so that the accuracy of the fatigue test can be improved by more than 0.5% of a set value, and the fatigue test requirement of the terminal of the battery 5 can be satisfied.

When the battery terminal fatigue test fixture provided by the utility model is used, the terminals of the clamping part 4 and the battery 5 can be bonded together, then the battery 5 and the clamping part 4 are simultaneously placed into a high-temperature box for heating, after the battery 5 and the clamping part 4 are cooled, the battery 5 is inserted into the accommodating cavity 11, the first connecting piece 2 and the second connecting piece 3 are inserted into the fixture 1, so that the fixture 1 clamps the battery 5, the fixture 1 is fixed on the fatigue machine 6, the fatigue machine 6 is connected with one end of the clamping part 4 far away from the battery 5, and finally the fatigue test is performed on the terminal of the battery 5 through the fatigue machine 6.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A battery terminal fatigue test fixture is characterized in that: comprises a clamp (1), a first connecting piece (2), a second connecting piece (3) and a clamping part (4);

The clamp (1) is provided with a containing cavity (11) and a clearance part (12), the containing cavity (11) is used for inserting a battery (5), one end of the battery (5) extends out of the clamp (1), the clearance part (12) extends along the surface of the clamp (1), and the clearance part (12) is communicated with the containing cavity (11);

The first connecting piece (2) is inserted into the clamp (1) along a first direction, and the first connecting piece (2) is used for adjusting the width of the gap part (12) so that the clamp (1) clamps the battery (5);

The second connecting piece (3) is inserted into the clamp (1) along a second direction, the second direction and the first direction are intersected, and the second connecting piece (3) is used for fixing the clamp (1) on the fatigue machine (6);

One end of the clamping part (4) is connected with a terminal of the battery (5), the other end of the clamping part (4) is in driving connection with the fatigue machine (6), and the fatigue machine (6) is used for performing fatigue test on the terminal of the battery (5).

2. The battery terminal fatigue test fixture of claim 1, wherein: along the second direction, clearance portion (12) by the one end of anchor clamps (1) extends to the other end of anchor clamps (1), with anchor clamps (1) separate into first arm lock (13) and second arm lock (14), one side of first arm lock (13) is equipped with first connecting hole (131), one side of second arm lock (14) is equipped with second connecting hole (141), first connecting piece (2) are inserted and are located first connecting hole (131) with second connecting hole (141), the opposite side of first arm lock (13) with the opposite side body coupling of second arm lock (14).

3. The battery terminal fatigue test fixture of claim 2, wherein: the first connecting hole (131) and the second connecting hole (141) are through holes, and the first connecting piece (2) is respectively in threaded fit with the first connecting hole (131) and the second connecting hole (141).

4. The battery terminal fatigue test fixture of claim 2, wherein: the first clamp arm (13) is provided with a plurality of first connecting holes (131), a plurality of first connecting holes (131) are arranged along the second direction at intervals, the second clamp arm (14) is provided with a plurality of second connecting holes (141), a plurality of second connecting holes (141) and a plurality of first connecting holes (131) are arranged in a one-to-one correspondence mode, and a plurality of first connecting pieces (2) are respectively inserted into a plurality of first connecting holes (131) and a plurality of second connecting holes (141) in a one-to-one correspondence mode.

5. The battery terminal fatigue test fixture of claim 1, wherein: the fatigue machine further comprises a fixing plate (7), wherein the fixing plate (7) is fixed on a workbench of the fatigue machine (6) through bolts, and the second connecting piece (3) extends to be connected with the fixing plate (7) along the second direction.

6. The battery terminal fatigue test fixture of claim 1, wherein: one end of the clamping part (4) is adhered to a terminal of the battery (5).

7. The battery terminal fatigue test fixture according to claim 6, wherein: one end of the clamping part (4) is adhered to the terminal of the battery (5) through AB glue, and the clamping part (4) and the battery (5) are placed in a high-temperature box to be heated.

8. The battery terminal fatigue test fixture of claim 1, wherein: and one end part of the clamping part (4) far away from the battery (5) is provided with a corrugated structure (41).

9. The battery terminal fatigue test fixture of claim 8, wherein: the fatigue machine (6) is provided with a chuck (61), and the chuck (61) is used for clamping one end of the clamping part (4) provided with the wavy structure (41).

10. The battery terminal fatigue test fixture of claim 1, wherein: the fatigue test comprises a push-pull test and a torque test, and the fatigue machine (6) is used for carrying out the push-pull test or the torque test on the terminal of the battery (5) through the clamping part (4).