Battery cover plate with novel post terminal sealing structure

Abstract

The invention discloses a battery cover plate with a novel post terminal sealing structure. The battery cover plate is characterized in that the battery cover plate comprises a cover plate body (3); the left and right ends of the cover plate body (3) are respectively provided with a first through hole (31) and a second through hole (32); a positive post terminal (7) is arranged in the first through hole (31), and a negative post terminal (8) is arranged in the first through hole (32); a ceramic ring (6) is arranged between and hermetically connected with the lower part of the inner side surface of the first through hole (31) and the lower part of the positive post terminal (7); another ceramic ring (6) is arranged between and hermetically connected with the lower part of the inner side surface of the second through hole (32) and the lower part of the negative post terminal (8); and a positive upper gasket (9) and a negative upper gasket (10) are respectively and fixedly connected withthe left and right ends of the bottom of the cover plate body (3). The battery cover plate of the invention can effectively seal the post terminals of the battery, avoids leakage at the sealing placesof the post terminals, ensures the safe use of the battery, and prolongs the service life of the battery.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a battery cover plate with a novel pole sealing structure. Background technique [0002] At present, lithium-ion batteries have the advantages of safety, high efficiency, no pollution, high specific energy, abundant raw materials, many cycles, and long storage time, and are widely used not only in portable electronic devices such as mobile phones, digital cameras, and laptops , and are also widely used in large and medium-sized electric equipment such as electric vehicles, electric bicycles, and electric tools, so the safety requirements for lithium-ion batteries are getting higher and higher. [0003] However, for the current lithium-ion power battery, it is mainly used in passenger cars. For lithium-ion power batteries, there are requirements for high-rate charge and discharge. Therefore, it is inevitable that the temperature of the battery will be too high. After long-term...

AI Technical Summary

Problems solved by technology

Therefore, it is inevitable that the temperature of the battery will be too high. After long-term use, it will cause inevitable damage to the seal of the battery pole, and there will be leakage of varying degrees at the seal of the pole. In severe cases, it will even cause the battery to The internal electrolyte leaks out, seriously affecting the safety of the battery and reducing the overall service life of the battery

In addition, for existing lithium-ion power batteries, when the degree of riveting between the pole and the battery cover is not enough, the deformation of the pole is uneven, or riveting is performed on a special-shaped battery pole, the sealing of the pole will also be caused. There are different degrees of leakage

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