Fixture used for testing thickness and deflection of battery and test method by using same

Abstract

The invention provides a fixture used for testing thickness and deflection of a battery and a test method by using the fixture to test the thickness and the deflection of the battery. The test fixture is characterized in that: the test fixture comprises: a base plate, a pair of parallel side plates which are perpendicular to the base plate, a pair of end plates which are connected with the side plates on the ends, and more than 2 test sections which are located between the side plates; the test sections have openings at tops and inner walls of the test sections are formed into insertion grooves which can insert into the battery to be tested; gaps exist between outer walls and the side plates; the test sections can slide along a direction which is perpendicular to the direction of the sideplates.

Description

technical field [0001] The invention relates to a detection jig for detecting the thickness and deflection of a battery and a method for detecting the thickness and deflection of the battery by using the jig. Background technique [0002] With the rapid development of the electronics industry, especially the widespread popularization of mobile devices and handheld electronic products in recent years, secondary batteries with high capacity density and easy miniaturization are increasingly used as portable devices such as notebook computers and electric tools. power supply. From the point of view of productivity and practicability, not only the battery is required to have good charging and discharging performance, but also the battery is required to have a good appearance. For example, in the process of large-scale production and use, the requirements for the overall thickness and flatness of the battery are very high. If the thickness of the battery is uneven or the surface ...

AI Technical Summary

Problems solved by technology

[0008] However, the problem with the above-mentioned detection fixture is that the overall thickness of the battery cannot be managed because the thickness detection is only performed on a small number of parts (such as both ends).

That is to say, although the thickness of both ends of the battery is qualified, it can be successfully inserted into the inspection fixture and judged to be a qualified product, but in fact, there are cases where the overall thickness of the battery is uneven, such as being too thick locally, and cannot be used.

Moreover, since the thickness tolerance of the battery is generally smaller than the deflection tolerance, if the above-mentioned battery thickness detection device is used to manage the overall thickness of the battery, sometimes the warped part of the battery is too large to be performed.

Therefore, even if the overall thickness of the battery is acceptable, it may be judged as a defective product due to excessive warpage.

In this way, the crux of the problem of unqualified products cannot be found out only through the above-mentioned existing thickness detection fixture, and the manufacturing process of batteries cannot be improved in a targeted manner.

[0009] Therefore, the problem in the prior art is that the overall thickness of the battery cannot be detected at multiple points, and the thickness and deflection of the battery cannot be managed at the same time due to the warpage of the battery plate

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