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Testing device for hardness of battery core

A technology for testing devices and batteries, applied in the direction of measuring devices, testing material hardness, strength characteristics, etc., can solve the problems of not particularly large hardness of batteries, large measurement errors, and insufficient precision of equipment measurement, and achieve intuitive and convenient results. Measuring the effect of convenience

Inactive Publication Date: 2019-03-29
GUANGDONG TEAMGIANT NEW ENERGY TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1): The current equipment measurement is not precise enough, and generally can only measure the hardness of a certain position of a cell;
[0004] (2): Both the pendulum ball method and the rebound method use small balls to hit the measured object, but considering that the hardness of the battery itself is not particularly large, the measurement error of this method is relatively large, for example, it may be used for collision the ball will stop bouncing

Method used

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  • Testing device for hardness of battery core
  • Testing device for hardness of battery core
  • Testing device for hardness of battery core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Measure the hardness of the produced 386885 battery cell. Take 3pcs of battery cells of this model that have been sealed twice and dry batteries that have not been filled with liquid (dry batteries are not filled with liquid, there is no gas and liquid inside after the second seal, and the battery hardness is the maximum value of this model), and the battery cells are first clamped with a jig, and the jig The width is 7mm, and the cell is placed horizontally directly under the metal ball after clamping. The weight of the metal ball is 50g, and the diameter of the ball is the same as the diameter of the force sensor surface of 5mm. There are a total of 5pcs small balls, and the distance between the small balls is 10mm. Adjust the position of the fixture to ensure that all the small balls can be touched by the rotating cell. Adjust the height of the ball to 15mm from the height of the cell when it is placed horizontally. Turn on the rotating rod, the rotating rod drives ...

Embodiment 2

[0033] Measure the hardness of the produced 421212 battery cells. Take 3pcs of battery cells of this model that have been sealed twice and dry batteries that have not been filled with liquid (dry batteries are not filled with liquid, there is no gas and liquid inside after the second seal, and the battery hardness is the maximum value of this model), and the battery cells are first clamped with a jig, and the jig The width is 10mm, and the cell is placed horizontally directly under the metal ball after clamping. The weight of the metal ball is 100g, and the diameter of the ball is 6.2mm, which is the same as the diameter of the sensing surface of the force sensor. There are a total of 5pcs small balls, and the distance between the small balls is 12mm. Adjust the position of the fixture to ensure that all the small balls can be touched by the rotating cell. Adjust the height of the ball to 30mm from the height of the cell when it is placed horizontally, turn on the rotating rod...

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Abstract

The invention discloses a testing device for hardness of a battery core. The testing device comprises a base, a bracket, a fixing clamp, a total controller with data displaying, a rotating rod of thefixing clamp disposed on the bracket, a plurality of suspended metal balls, and a plurality of power sensors. The end of each force sensor is correspondingly disposed in the movement direction of themetal ball. When the fixing clamp loading the battery core rotates by 90 degree, the rotated battery core can touch the metal ball. The total controller controls the rotating rod to rotate, thereby driving the battery core on the fixing clamp to rotate and hit the metal balls. The hardness of the battery cell is judged according to that each force sensor feeds back the felt impact force to the overall controller after being struck by the metal balls. The testing device for the hardness of the battery core can measure the entire battery core at multiple points, and the result is intuitive and convenient for comparison. Compared with the prior art that the measurement of the hardness of the battery core is often carried out by fixing the battery core and measuring with a measuring instrument, the movement measurement of the present invention is consistent with the hardness value of the core when actually used.

Description

technical field [0001] The invention relates to the technology for measuring the hardness of electric cores, in particular to a testing device for the hardness of electric cores. Background technique [0002] At present, the testing technologies for battery hardness include pendulum ball hardness tester and rebound method to measure hardness, but the existing technology has the following problems: [0003] (1): The current equipment measurement is not precise enough, and generally can only measure the hardness of a certain position of a cell; [0004] (2): Both the pendulum ball method and the rebound method use small balls to hit the measured object, but considering that the hardness of the battery itself is not particularly large, the measurement error of this method is relatively large, for example, it may be used for collision The ball will stop bouncing. Contents of the invention [0005] Aiming at the problems existing in the prior art, the present invention provid...

Claims

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Application Information

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IPC IPC(8): G01N3/40
CPCG01N3/40G01N2203/0076
Inventor 何欢王建彬叶茂
Owner GUANGDONG TEAMGIANT NEW ENERGY TECH CORP
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