Hot-pressing resistance measuring machine for battery cells

Abstract

The invention discloses a hot-pressing resistance measuring machine for battery cells. The hot-pressing resistance measuring machine comprises an air cylinder plate and a bottom plate; a vertical column is connected between the air cylinder plate and the bottom plate, and a pressurized air cylinder is connected to the air cylinder plate; an air cylinder movable rod of the pressurized air cylinderpenetrates through the air cylinder plate and is connected with an air cylinder joint; a pressing plate is connected to the air cylinder joint, and an upper heating copper plate is connected to the bottom of the pressing plate and internally provided with an upper heating rod mounting hole used for mounting a heating rod; a lower heating copper plate is connected to the bottom plate and internallyprovided with a lower heating rod mounting hole used for mounting the heating rod; terminal side plates are connected to the left side and the right side of the pressing plate correspondingly, and atab pressing plate is connected between the two terminal side plates; a tab positioning block is arranged on the bottom plate and internally provided with a movable needle table; and a testing needleis connected to the movable needle table, and a spring is arranged between the tab positioning block and the tab pressing plate. The structure is simple, all work can be completed by one worker, workactions are few, the working efficiency is high, and the resistance reading is stable.

Description

technical field [0001] The invention relates to the technical field of battery cell testing, in particular to a thermal piezo resistance measuring machine for battery cells. Background technique [0002] At present, the method of performing resistance test after bare cell stacking is: after the bare cell stacking is completed, place it on the platform work table. The first operator presses the plate on the battery cell; at the same time, the second operator clamps the positive and negative needles on the resistance tester to the two positive and negative electrodes of the battery respectively, and then starts the resistance tester to Start testing button. After the resistance tester gets the resistance value, a second operator records the reading. Due to the large difference in the resistance value of each measurement, the operator calculated the average value after testing 5 times. [0003] The disadvantages of this method are as follows: [0004] a. The pressing force ...

AI Technical Summary

Problems solved by technology

[0004] a. The pressing force of personnel is uneven, and the resistance reading fluctuates greatly;

[0005] b. The ambient temperature is greatly affected by the weather, and the resistance value also changes to a certain extent due to the temperature;

[0006] c. There are many operators, a large amount of labor, and the methods are inconsistent, and the resistance readings are different.

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