Power Battery

Abstract

A power battery, the power battery includes an inner case (4), an outer case (1), a battery body (2) and electrodes (3), the battery body (2) includes electrode plates, the external surface of the outer case is provided with an external heat abstractor and the internal surface of the inner case is provided with an internal heat abstractor, a cylindrical holding cavity (5) with an annular cross section is formed between the outer case (1) and the inner case (4) and the electrode plates are rolled in the holding cavity (5), the electrodes (3) are arranged in an inner cavity of the inner case (4) and the inner case also has at least an airway going through the inner cavity.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. application Ser. No. 13 / 376,922 filed Dec. 8, 2011, which is a continuation application of PCT Patent Application No. PCT / CN2009 / 000803, filed on Jul. 17, 2009, entitled “Power Battery”, which claims priority from Chinese Patent Application No.200910040186.2, filed on Jun. 11, 2009, entitled “Power Battery”, both of which are hereby incorporated by reference herein.TECHNICAL FIELD[0002]The present invention relates to techniques of batteries, and more particularly, to a power battery.BACKGROUND OF THE INVENTION[0003]With the development of the world economy, the price of the international oil fluctuates violently in recent years, and the oil resource is anticipated to decrease in the future, so oil has already become a bottle neck of the development of the world economy, and making use of new energy sources has become a new trend in the development of economy. With the growing shortage of the glo...

AI Technical Summary

Benefits of technology

This patent is about a new kind of power battery that has improved safety and performance. It has a specific structure, including an external heat abstractor, an internal heat abstractor, and airways for releasing heat. This design helps to keep the battery cool and reduces the risk of exploding. Additionally, the battery can be equipped with a ventilator or air conditioner to control its temperature. The battery also has a thicker outer case to prevent accidents if there are sudden increases in pressure or temperature. Overall, this new battery has better security, can handle more heat, and has a longer lifespan.

Problems solved by technology

The key factor which affects the safety performance of the lithium ion battery is that the heat of the battery produced in the working process can't be released in time.

Instead, the heat is accumulated gradually and becomes out of control to cause an explosion at last, which will bring harm and damages to the users.

Now the lithium ion battery is solid, which is not good for eliminating heat.

These two kinds of batteries have the same defects of low safety performance, less charge / discharge cycles and bad operational performances as follows:

Due to the whole structure defects of the square battery, the square battery stops the internal heat from being released, so that the outer case of the power battery and the inner electrode plates distort, and the spaces between the inner electrode plates of the battery become unequal, which will affect the charging characteristics and discharging characteristics.

What's more, that the internal heat can't be released will result in the instable performance, explosion and short service life of the battery.

Due to the whole structure defects of the circular battery, the circular battery stops the internal heat from being released, so that the spaces between the inner electrode plates of the battery become unequal, which will affect the charging characteristics and discharging characteristics.

What's more, that the internal heat can't be released will result in the instable performance, explosion and short service life of the battery.

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