Cylindrical cell battery pack packaging structure suitable for bearing large current

Abstract

The invention discloses a cylindrical cell battery pack packaging structure suitable for bearing a large current. The cylindrical cell battery pack packaging structure suitable for bearing the large current comprises multiple longitudinal cylindrical cell battery monomers (1) of which negative and positive electrodes are connected end to end through connecting components (2), and horizontal cylindrical cell battery monomers (3) which are installed at the end parts of the longitudinal cylindrical cell battery monomers (1) and form U-type arrangement with the longitudinal cylindrical cell battery monomers (1). The cylindrical cell battery monomer comprises a copper current-carrying plate (1.1), a nickel sheet (1.2) and multiple cylindrical cells (1.3). The copper current-carrying plate (1.1)is installed at two negative and positive ends of the cylindrical cells (1.3). The nickel sheet (1.2) is installed between the copper current-carrying plate (1.1) and the cylindrical cells (1.3). Thenickel sheet (1.2) is connected with electrodes of the cylindrical cells (1.3) and the copper current-carrying plate (1.1). The cylindrical cell battery pack packaging structure is capable of bendinglugs at two sides of the nickel sheet to a groove in the front face of the copper current-carrying plate, the structure is simple, and a battery monomer parallelly-connected structure is capable of increasing a thickness of the copper current-carrying plate according to the need, so a design requirement of the oversize current is satisfied.

Description

technical field [0001] The invention relates to the field of battery manufacturing, in particular to a package structure of a cylindrical cell battery group suitable for carrying large current. Background technique [0002] Cylindrical batteries have been widely promoted and used due to their well-known advantages. At present, the most common series-parallel connection method of cylindrical batteries is single energy storage spot welding. The disadvantage of this method is that if the bracket is not used, the heat dissipation of the battery pack is not good. Well, if the bracket is used, the after-sales maintenance and recycling of the single battery is a big problem, and the pure nickel strip is spot-welded. In order to meet the high-current work, it is necessary to spot-weld multiple nickel strips, the production efficiency is low, and the same battery The core needs to withstand multiple spot welding pressures, which affects the performance of the single cell. Moreover, i...

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Problems solved by technology

[0002] Cylindrical batteries have been widely promoted and used due to their well-known advantages. At present, the most common series-parallel connection method of cylindrical batteries is single energy storage spot welding. The disadvantage of this method is that if the bracket is not used, the heat dissipation of the battery pack is not good. Well, if the bracket is used, the after-sales maintenance and recycling of the single battery is a big problem, and the pure nickel strip is spot-welded. In order to meet the high-current work, it is necessary to spot-weld multiple nickel strips, the production efficiency is low, and the same battery The core needs to withstand multiple spot welding pressures, which affects the performance of the single cell. Moreover, in order to match the welding effect of the battery cell, sometimes larger or thicker parts cannot be selected, resulting in the inability to meet the design requirements for excessive current. not broad

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