A lithium battery structure

Abstract

The invention relates to a lithium battery structure, including a negative electrode casing, a positive terminal cover, a positive electrode sheet, a negative electrode sheet, a positive electrode ear, a negative electrode ear and a diaphragm, wherein the positive electrode sheet and the negative electrode sheet are separated by the diaphragm and embedded in the negative electrode casing , the positive terminal cover and the negative electrode housing form a closed cavity structure, the positive electrode piece is electrically connected to the positive terminal cover through the positive pole ear, and the negative electrode piece is electrically connected to the negative electrode housing through the negative pole ear. There are two positive pole ears in total, and they are symmetrical Distributed at both ends of the positive pole piece, one negative pole ear, the center line of the negative pole ear and the center line of the negative pole plate coincide and distribute, the positive pole ear and the negative pole piece are electrically connected to the positive pole piece and the negative pole piece respectively through the positioning pole piece, and the front end of the positive pole ear is equipped with a strengthening electrode, And the front ends of the two positive tabs are electrically connected through the strengthening electrode and then electrically connected with the positive end cap. The invention has a simple structure and can effectively improve the charge and discharge efficiency, discharge speed and instantaneous discharge current of the lithium battery while improving the structural stability and reliability of the lithium battery.

Description

technical field [0001] The invention relates to a battery device, specifically a lithium battery structure. Background technique [0002] Due to its small structure, flexible and convenient use, lithium batteries have gradually replaced traditional dry batteries and lead-acid batteries, and have been widely used. However, in actual use, it is found that current lithium batteries often use traditional batteries. structure, although it can meet the needs of actual use, the stability of the connection relationship between the pole piece and the tab in the current internal structure of the lithium battery is relatively poor, and it is prone to loosening and fracture, resulting in an increase in the internal resistance of the lithium battery, large heat generation, and serious Sometimes it even causes spontaneous combustion of the lithium battery, so the operation stability and safety are relatively poor. In addition, the current lithium battery also has the disadvantages of slow...

AI Technical Summary

Problems solved by technology

[0002] Due to its small structure, flexible and convenient use, lithium batteries have gradually replaced traditional dry batteries and lead-acid batteries, and have been widely used. However, in actual use, it is found that current lithium batteries often use traditional batteries. structure, although it can meet the needs of actual use, the stability of the connection relationship between the pole piece and the tab in the current internal structure of the lithium battery is relatively poor, and it is prone to loosening and fracture, resulting in an increase in the internal resistance of the lithium battery, large heat generation, and serious Sometimes it even causes spontaneous combustion of the lithium battery, so the operation stability and safety are relatively poor. In addition, the current lithium battery also has the disadvantages of slow discharge speed and small discharge current, which leads to the inability to fully release the internal electric energy on the one hand, and the other On the one hand, it cannot effectively meet the needs of high-power electrical appliances without increasing the battery capacity, which greatly limits the flexibility and reliability of lithium batteries. Therefore, in response to this phenomenon, it is urgent to develop a lithium battery structure to meet the needs of practical use

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