A tab clamping device for battery formation

Abstract

The invention relates to a tab clamping device for battery formation, which is used for charging and discharging lithium batteries. It discloses that the voltage conducting layer and the current conducting layer are respectively divided into no less than one conductive strip, and the average interval Conductive regions formed by ground arrangement, and then connected to form conductive layers through respective conductive buses; the conductive regions of the voltage conductive layer and the conductive regions of the current conductive layer are meshed with gaps through respective conductive strips to form tab clamping regions. The invention has the advantages of reasonable structure and convenient manufacture. It can adapt to the formation of various types of lithium batteries. At the same time, there will be no short circuit between the voltage line and the current line during work. Due to the phenomenon of poor contact between the lug and the lug clamping device caused by the unevenness of the upper and lower pressing plates, it has a long service life and is safe and reliable.

Description

technical field [0001] The invention relates to a tab clamping device for battery formation, in particular to a tab clamping device which forms a tab clamping area by arranging conductive strips at intervals. Background technique [0002] Lithium battery formation and capacity separation and other processes need to clamp the tabs to charge and discharge the battery. At present, the reliability of the existing tab clamping device is relatively poor, and the reliability of tab clamping during charging and discharging of a large number of batteries cannot be guaranteed. It is a conductive layer, the conductive layer of the upper pressing plate is connected to the voltage detection unit of the charging device, and the conductive layer of the lower pressing plate is connected to the current input and output lines, or the two are opposite. When the upper pressing plate and the lower pressing plate are closed by force, the conductive layer of the upper pressing plate and the condu...

AI Technical Summary

Problems solved by technology

This solution can ensure that the voltage and current lines can fully contact the tabs, but there are hidden dangers, because the thickness of the battery tabs is less than 0.1mm, and the gap between the upper platen and the conductive layer of the lower platen of the tab clamping device is too small when clamping , due to the problem of process accuracy, it is impossible to ensure that the upper platen and the lower platen are parallel, so it is easy to produce a short circuit and affect the accuracy of battery data collection. The contact surface between the pressure plate and the tab is a conductive layer, and the conductive layer circuit is divided into two parts, one part is connected to the voltage detection unit of the charging device, and the other part is connected to the current input and output lines. When the upper pressure plate and the lower pressure plate are closed by force, the battery tab Just contact with the conductive layer voltage line and current line at the same time, and the charging device can collect battery current and voltage data. However, compared with the first scheme, there is no short-circuit problem in this scheme design, so that the voltage acquisition loop collects the tabs through the current loop. The voltage is not directly sampled at both ends of the battery tabs, but if the fit between the upper and lower pressure plates is not enough, it is more difficult to obtain the voltage line and current line where the battery tabs are in contact with the conductive layer at the same time when this scheme is working than the first scheme. Guarantee, such a one also affects the accuracy of battery data collection, so solving the possibility of stable contact and no short circuit has become the design direction of the battery forming tab clamping device, and it can also solve the problem of battery tab length due to different battery models. Changes or changes in battery thickness lead to frequent changes in position caused by inconvenient access

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