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CN-224216790-U - Durability test system

CN224216790UCN 224216790 UCN224216790 UCN 224216790UCN-224216790-U

Abstract

A durability test system relates to the technical field of power battery test equipment and comprises a durability test device and a tester, wherein the durability test device comprises a fixed seat, a connecting rod, a first clamp and a second clamp, the first clamp clamps a first shell plate part, the second clamp clamps a second shell plate part, at least one end of the first clamp is connected with the connecting rod, the connecting rod is rotatably connected to the fixed seat, the connecting rod can drive the first clamp to shrink a clamp opening so that the first clamp clamps and fixes the first shell plate part, the second clamp is located on one side, away from the fixed seat, of the first clamp, and the tester is configured to drive the second clamp to reciprocate along a second direction so that the second shell plate part can reciprocate along with the second clamp. The utility model provides a durability test system, which is tested by replacing a shell with a first shell plate part and a second shell plate part which are connected, has a simple and convenient fixing mode, simplifies the structure of a fixture, saves sample preparation time, reduces labor cost and improves test efficiency.

Inventors

  • WEI JUANJUAN
  • Rao Caitang
  • ZHOU LINJIANG

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250424

Claims (10)

  1. 1. A endurance test system for a fatigue endurance test of a piece (200) to be tested, the piece (200) to be tested comprising a first shell plate portion (210) and a second shell plate portion (220) connected, characterized in that the endurance test system comprises an endurance test device (100) and a testing machine (300); The endurance test device (100) comprises a fixed seat (110), a connecting rod (120), a first clamp (140) and a second clamp (150); The first clamp (140) is connected to the fixed seat (110) and is configured to clamp the first shell plate part (210), and the second clamp (150) is configured to clamp the second shell plate part (220), and the endurance test device (100) has a first direction (X) and a second direction (Y) which intersect; The connecting rod (120) is rotatably connected to the fixing base (110), and the connecting rod (120) is configured to drive the first clamp (140) to shrink the clamp opening (144) so that the first clamp (140) clamps and fixes the first shell plate part (210); The second clamp (150) is positioned on one side of the first clamp (140) away from the fixed seat (110) along the second direction (Y), the second clamp (150) is connected with the testing machine (300), and the testing machine (300) is configured to drive the second clamp (150) to reciprocate along the second direction (Y) so that the second shell plate part (220) swings reciprocally along with the second clamp (150).
  2. 2. The endurance test system as claimed in claim 1, wherein the first clamp (140) includes a first clamp (141) and a second clamp (142), the first clamp (141) and the second clamp (142) being spaced apart along the first direction (X) to form the clamp mouth (144) sandwiching the first shell plate portion (210); The first clamping piece (141) and the second clamping piece (142) are both connected to the fixing seat (110) in a sliding mode, the number of the connecting rods (120) is two, one connecting rod (120) abuts against the first clamping piece (141) and is configured to drive the first clamping piece (141) to move towards the second clamping piece (142) along the first direction, and the other connecting rod (120) abuts against the second clamping piece (142) and is configured to drive the second clamping piece (142) to move towards the first clamping piece (141) along the first direction, so that the clamp opening (144) is contracted between the first clamping piece (141) and the second clamping piece (142) until the first shell plate part (210) is clamped and fixed.
  3. 3. The endurance test system according to claim 2, characterized in that the first clamp (141) is provided with a groove (143) receiving an end of the connecting rod (120), and/or the second clamp (142) is provided with a groove (143) receiving an end of the connecting rod (120); the depth of the groove (143) is configured to be greater than the thickness of the first shell plate portion (210) in the first direction.
  4. 4. The endurance test system as claimed in claim 1, wherein the first clamp (140) includes a first clamp (141) and a second clamp (142), the first clamp (141) and the second clamp (142) being spaced apart along the first direction (X) to form the clamp mouth (144) sandwiching the first shell plate portion (210); The connecting rod (120) is abutted against the first clamping piece (141) and is configured to drive the first clamping piece (141) to move towards the second clamping piece (142) along the first direction, so that the clamping openings (144) of the first clamping piece (141) and the second clamping piece (142) are contracted until the first shell plate part (210) is clamped and fixed.
  5. 5. The endurance test system as claimed in claim 1, wherein the second clamp (150) includes a third clamp (151) and a socket (152), the third clamp (151) having a receiving cavity (153), the receiving cavity (153) extending in the first direction (X) and being open at both ends; The plug connector (152) is plugged in the accommodating cavity (153) of the third clamping piece (151), and a gap for clamping the second shell plate part (220) is arranged between the plug connector (152) and the third clamping piece (151) along the second direction (Y); The third clamping piece (151) is connected with an adjusting piece (154), the adjusting piece (154) penetrates through the third clamping piece (151) and abuts against the plug-in piece (152), and the adjusting piece (154) is configured to drive the plug-in piece (152) to move so as to change a gap between the plug-in piece (152) and the third clamping piece (151).
  6. 6. The endurance test system as claimed in claim 5, wherein the third clamping member (151) is provided with an opening (155) at a side close to the fixing base (110), the opening (155) being in communication with the receiving cavity (153); In the first direction (X), the cross-sectional area of the opening (155) is smaller than the cross-sectional area of the receiving chamber (153).
  7. 7. The endurance test system as claimed in claim 5, wherein the adjustment member (154) is screw-coupled with the third clamping member (151).
  8. 8. The endurance test system as claimed in claim 1, wherein the endurance test apparatus (100) further comprises an action bar (160), the action bar (160) is detachably connected to the second fixture (150), and the action bar (160) is located on a side of the second fixture (150) facing away from the fixing base (110); The testing machine (300) is connected to the action bar (160), the testing machine (300) being configured to drive the action bar (160) to reciprocate along the second direction (Y) to reciprocate the second clamp (150) with the action bar (160) and to reciprocate the second shell plate portion (220) with the second clamp (150).
  9. 9. The endurance test system as claimed in claim 1, wherein the endurance test apparatus (100) further comprises an end plate (130); The end plate (130) is installed on the fixing seat (110), and the connecting rod (120) is rotatably connected to the end plate (130).
  10. 10. The endurance test system as claimed in claim 1, wherein the fixing base (110) is provided with a fixing hole (111).

Description

Durability test system Technical Field The utility model relates to the technical field of power battery testing equipment, in particular to a durability testing system. Background In the design of a power battery Pack (Pack), an electric core provides power for the whole vehicle end. The housing of the battery cell comprises a shell and a top cover, and the top cover and the shell are usually welded in a packaging mode. In the random vibration test (random vibration test is a form of fatigue endurance test), the weakest part of the shell of the battery cell is usually a welding line between the top cover and the shell, if the welding line is broken, leakage and poor insulation detection are easily caused, the whole battery pack may need to be replaced after the battery cell is leaked, and the maintenance cost is high. The random vibration test of the battery pack is carried out in DV (design verification) and PV (product verification) stages to carry out design verification, but the single cost of the random vibration test is relatively high, the number of battery pack samples for each vibration is relatively small, usually 1-3, if the vibration fails, the battery pack needs to be reassembled, a large amount of materials are needed, and the overall research and development cost and the research and development period are prolonged. At present, a test scheme for replacing the whole battery pack by adopting a battery cell shell is developed aiming at the problems, and the risk of weld cracking is predicted, but the shell of the battery cell in the test scheme relates to an adhesive interface, the adhesive process is complex, and the test efficiency is low. Disclosure of utility model The utility model aims to provide a durability test system, which solves the technical problem of low test efficiency caused by the fact that the test of a battery cell shell is needed to be glued in the random vibration test in the prior art to a certain extent. In order to achieve the above object, the present utility model provides the following technical solutions: The endurance test system is used for fatigue endurance test of a piece to be detected, and comprises a first shell plate part and a second shell plate part which are connected, wherein the endurance test system comprises an endurance test device and a tester; The endurance test device comprises a fixed seat, a connecting rod, a first clamp and a second clamp; The first clamp is connected to the fixed seat and is configured to clamp the first shell plate part, and the second clamp is configured to clamp the second shell plate part; the connecting rod is rotatably connected to the fixed seat, and is configured to drive the first clamp to shrink a clamp opening so as to clamp and fix the first shell plate part; The second clamp is arranged on one side, away from the fixed seat, of the first clamp along the second direction, the second clamp is connected with the testing machine, and the testing machine is configured to drive the second clamp to reciprocate along the second direction so as to enable the second shell plate to swing along with the second clamp in a reciprocating mode. In any of the above solutions, optionally, the first clamp includes a first clamping piece and a second clamping piece, where the first clamping piece and the second clamping piece are disposed at intervals along the first direction, so as to form the clamp opening that sandwiches the first shell plate portion; The first clamping piece and the second clamping piece are both connected to the fixing base in a sliding mode, the number of the connecting rods is two, one connecting rod abuts against the first clamping piece and is configured to drive the first clamping piece to move towards the second clamping piece along the first direction, the other connecting rod abuts against the second clamping piece and is configured to drive the second clamping piece to move towards the first clamping piece along the first direction, and therefore the first clamping piece and the second clamping piece shrink the clamping opening until the first shell plate portion is clamped and fixed. In any of the above solutions, optionally, the first clip member is provided with a recess for receiving an end of the connecting rod, and/or the second clip member is provided with a recess for receiving an end of the connecting rod; The depth of the groove is configured to be greater than the thickness of the first shell plate portion along the first direction. In any of the above solutions, optionally, the first clamp includes a first clamping piece and a second clamping piece, where the first clamping piece and the second clamping piece are disposed at intervals along the first direction, so as to form the clamp opening that sandwiches the first shell plate portion; The connecting rod is abutted against the first clamping piece and configured to drive the first clamping piece to move towards the second clamping piece