Electrode tab clamping device for battery formation

Abstract

The invention relates to an electrode tab clamping device for battery formation and charging and discharging of lithium battery formation. According to the electrode tab clamping device, a voltage conducting layer and a current conducting layer are each formed through the steps that no less than one divided conducting strip are arranged at even intervals to form a conducting area, and then the conducting area is communicated through a corresponding conducting bus to form the conducting layer; the conducting area of the voltage conducting layer is in gap meshing with the conducting area of the current conducting layer through the corresponding conducting strips to form an electrode tab clamping area. The electrode tab clamping device for battery formation has the advantages that the structure is reasonable, manufacturing is convenient, and the electrode tab clamping device can adapt to formation of various types of lithium batteries; meanwhile, the phenomena that short circuit of a voltage line and a current line occurs, and the electrode tab voltage sampling precision is influenced by charging and discharging currents cannot occur during work; in addition, the phenomenon that the electrode tab clamping device is in bad contact due to the fact that an upper pressing plate and a lower pressing plate are unsmooth cannot occur, the service life is long, and the safety and reliability are achieved.

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 con...

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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