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CN-117191577-B - Detection method of lead-carbon battery oil-resistant plastic shell strength detection device

CN117191577BCN 117191577 BCN117191577 BCN 117191577BCN-117191577-B

Abstract

The invention relates to the field of detection of storage battery plastic shells, and discloses a detection method of an oil-resistant plastic shell strength detection device of a lead-carbon battery, wherein compression ends of two compression rods (2) symmetrically penetrate through lower parts of two opposite detection side walls (101) of a base (1) and then extend into the base, an adjusting end is positioned outside the base, two compression handles (4) are respectively fixed at the adjusting ends of the two compression rods and are respectively in threaded connection with the two detection side walls, tension ends of the two tension rods (3) symmetrically penetrate through upper parts of the two detection side walls and then extend into the base, the adjusting ends are positioned outside the base, tension blocks (5) are respectively arranged at the tension ends of the two tension rods, and a tension adjusting handle (9) is respectively fixed at the adjusting ends of the two tension rods. The device can simply measure the strength of the battery plastic shell to be detected, and ensure the detection accuracy.

Inventors

  • LI JUN
  • WANG BO
  • HU GUOZHU
  • LI MINGJUN
  • DING JIANZHONG
  • SUN WANG

Assignees

  • 浙江天能电池(江苏)有限公司

Dates

Publication Date
20260505
Application Date
20180814

Claims (9)

  1. 1. The detection method of the oil-resistant plastic shell strength detection device of the lead-carbon battery is characterized by comprising a base (1), two compression rods (2) and two tension rods (3), wherein compression ends of the two compression rods (2) symmetrically penetrate through the lower parts of two opposite detection side walls (101) of the base (1) and then extend into the base (1), an adjusting end is positioned outside the base (1), a compression adjusting handle (4) is respectively fixed at the adjusting ends of the two compression rods (2), the two compression rods (2) are respectively in threaded connection with the two detection side walls (101), the tension ends of the two tension rods (3) symmetrically penetrate through the upper parts of the two detection side walls (101) and then extend into the base (1), the adjusting ends are positioned outside the base (1), tension blocks (5) are respectively arranged at the tension ends of the two tension rods (3), and an adjusting handle (9) is respectively fixed at the adjusting ends of the two tension rods (3); the detection method of the detection device comprises the following steps: S1, placing an opening of a battery plastic shell (8) to be tested in the base (1) upwards, and enabling two opposite side walls (801) of the battery plastic shell (8) to be tested to be respectively positioned between a compression end of a corresponding compression rod (2) and a tension block (5) of the tension rod (3); S2, adjusting the two compression adjusting handles (4) to enable the compression ends of the two compression adjusting handles (4) to be locked and fixed from two sides of the battery plastic shell (8) to be tested; S3, adjusting the two tensioning adjusting handles (9) to enable the two tension blocks (5) to be lightly attached to the inner sides of the two opposite side walls (801) of the battery plastic shell (8) to be tested, and measuring the distances d1 and d2 between the outer side walls of the two opposite side walls (801) and the inner side walls of the corresponding detection side walls (101) respectively; s4, adjusting the two tensioning adjustment handles (9) again to reduce d1 and d2 by 4-5 mm respectively; s5, placing the detection device and the battery plastic shell (8) to be detected in an incubator, carrying out heat preservation treatment for 20-30 hours at 50-60 ℃, taking out, and cooling at normal temperature; and S6, observing whether cracks exist on the surfaces of two opposite side walls (801) of the battery plastic shell (8) to be tested, and if the cracks do not exist, indicating that the strength of the battery plastic shell (8) to be tested is qualified.
  2. 2. The detection method of the oil-resistant plastic shell strength detection device for the lead-carbon battery according to claim 1 is characterized in that two detection side walls (101) are respectively provided with an adjusting groove (102), the adjusting grooves (102) are perpendicular to the bottom surface of the base (1) and penetrate through the detection side walls (101), the tensioning ends of the two tensioning rods (3) penetrate through the two detection side walls (101) symmetrically through penetrating through the corresponding adjusting grooves (102), and the two tensioning rods (3) are respectively connected with an adjusting nut (6) in a threaded mode.
  3. 3. The detection method of the oil-resistant plastic case strength detection device for the lead-carbon battery according to claim 2, wherein the adjusting groove (102) is positioned between the adjusting nut (6) and the tension block (5), or the adjusting nut (6) is positioned between the adjusting groove (102) and the tension block (5).
  4. 4. The detection method of the oil-resistant plastic shell strength detection device for the lead-carbon battery according to claim 1, wherein the two tension blocks (5) are respectively connected to the tensioning ends of the two tensioning rods (3) in a rotating manner.
  5. 5. The detection method of the oil-resistant plastic case strength detection device for the lead-carbon battery according to claim 2, wherein the two pressing rods (2), the two tightening rods (3) and the two adjusting grooves (102) are all located in the same plane.
  6. 6. The detection method of the oil-resistant plastic case strength detection device for the lead-carbon battery according to any one of claims 1 to 5, wherein a pressing block (7) is further fixed at the pressing ends of the two pressing rods (2), respectively.
  7. 7. The detection method of the lead-carbon battery oil-resistant molded case strength detection device according to any one of claims 1 to 5, wherein a difference between a distance between two detection side walls (101) and a width of a battery molded case (8) to be detected is greater than 10mm.
  8. 8. The detection method of the oil-resistant plastic case strength detection device for the lead-carbon battery according to any one of claims 1 to 5, wherein the two pressing rods (2) and the two tightening rods (3) are screw rods.
  9. 9. The detection method of the oil-resistant molded case strength detection device for a lead-carbon battery according to any one of claims 1 to 5, wherein in the step S1, DOT4 brake oil is uniformly coated on the outer surfaces of two opposite side walls (801) of the molded case (8) of the battery to be detected before the molded case (8) of the battery to be detected is placed in the base (1) with the opening upward.

Description

Detection method of lead-carbon battery oil-resistant plastic shell strength detection device Description of the division The invention discloses a split application of a lead-carbon battery oil-resistant plastic shell strength detection device and a detection method thereof, wherein the application date is 2018, 08 and 14, and the application number is 2018109221506. Technical Field The invention relates to the field of detection of plastic shells of storage batteries, in particular to a detection method of an oil-resistant plastic shell strength detection device of a lead-carbon battery. Background The storage battery is an important part of the electric vehicle, but the battery plastic shell is often broken in the assembly process of the electric vehicle manufacturer, and the plastic shell is damaged due to common fastener overpressure or is easily broken due to contact with oily solvents such as brake oil. Therefore, the plastic shell manufacturer optimizes and upgrades the material performance, improves the strength and oil resistance of the plastic shell, and greatly reduces the probability of cracking the plastic shell in use. Because the strength and oil resistance of the upgraded shell change, the conventional sampling detection standard and method cannot ensure the detection accuracy, and the device and the detection method are forced to judge the quality of the plastic shell. Disclosure of Invention Aiming at the problems in the prior art, the invention provides the detection method of the lead-carbon battery oil-resistant molded case strength detection device, which can simply measure the strength of the battery molded case to be detected and ensure the detection accuracy. The invention provides an oil-resistant plastic shell strength detection device for a lead-carbon battery, which comprises a base, two compression rods and two tension rods, wherein compression ends of the two compression rods symmetrically penetrate through lower parts of two opposite detection side walls of the base and then extend into the base, an adjusting end is positioned outside the base, the adjusting ends of the two compression rods are respectively fixed with a compression adjusting handle, the two compression rods are respectively in threaded connection with the two detection side walls, the tension ends of the two tension rods symmetrically penetrate through upper parts of the two detection side walls and then extend into the base, the adjusting ends are positioned outside the base, tension blocks are respectively arranged at the tension ends of the two tension rods, and one tension adjusting handle is respectively fixed at the adjusting ends of the two tension rods. Furthermore, the two detection side walls are respectively provided with an adjusting groove, the adjusting grooves are perpendicular to the bottom surface of the base and penetrate through the detection side walls, the tensioning ends of the two tensioning rods symmetrically penetrate through the two detection side walls respectively by penetrating through the corresponding adjusting grooves, and the two tensioning rods are respectively connected with an adjusting nut in a threaded mode. In order to enable the device to be suitable for measuring the strength of battery plastic shells of different sizes, two adjusting grooves perpendicular to the ground of the base are symmetrically formed in two detection side walls, so that the heights of the two tension rods on the two detection side walls are adjustable, and the heights of the two tension blocks on the detection side walls are adjustable, and the device can be suitable for measuring battery plastic shells of different sizes. Preferably, the adjusting groove is positioned between the adjusting nut and the tension block, or the adjusting nut is positioned between the adjusting groove and the tension block. The adjusting nut is arranged to fix the position of the tension rod after the battery plastic shell to be tested is placed in the base. Preferably, the two tension blocks are respectively connected to the tensioning ends of the two tensioning rods in a rotating manner. The tension block is rotationally connected with the tension rod, so that the position between the tension block and the side wall of the battery plastic shell to be measured can be conveniently adjusted, and when the battery plastic shell to be measured is placed in the base, two opposite side surfaces can be relatively easily placed between the corresponding tension block and the compression end of the compression rod. Preferably, the two pressing rods, the two tension rods and the two adjusting grooves are all located in the same plane. When the components are located on the same plane, the position of the battery plastic shell to be measured in the base is stable, and inaccurate measurement results caused by deviation of the battery plastic shell can be prevented. Further, a pressing block is fixed at the pressing ends of the t