Battery assembly packaging structure and battery assembly

Abstract

The invention relates to a battery assembly packaging structure and a battery assembly. The structure comprises a box body and a box cover arranged on the box body in a sealed mode, first through holes are distributed in the box cover in an array mode, and a plurality of sets of packaging units are fixedly arranged on the inner side of the box cover side by side. The packaging unit comprises a shell, a cover body arranged at the bottom of the shell and a fixing device used for fixing the packaging unit to the box cover. A plurality of groups of second through holes are distributed in the shellin an array manner, the first through holes and the second through holes are coaxially arranged, the diameter of the first through holes is smaller than that of the second through holes, and at leastone lithium battery is embedded in the second through holes. According to the invention, through the structure of the packaging units and the arrangement of the box cover, the requirement on the battery assembly precision can be greatly reduced, and when all the battery packaging units are assembled, a firm and stable battery pack can be formed. The problem that a plurality of cylindrical batteries are unsuccessfully packaged at one time can be well solved, the assembly precision is ensured, and the battery pack is stable and firm.

Description

technical field [0001] The invention belongs to the technical field of batteries, in particular to the field of battery pack packaging structures and battery packs. Background technique [0002] Power batteries are the core components of electric vehicles, and cylindrical batteries are widely used in electric vehicles due to their high overall structure energy density. When electric vehicles want to achieve long-range battery life, more batteries are needed, and the energy contained in cylindrical batteries is certain. , which means that the car will run farther, and a larger number of cylindrical lithium batteries will be required. When assembling cylindrical lithium batteries, the more the number of batteries, the more difficult it is to package the battery pack; in the prior art, two upper and lower plates are usually used (a cover board, a bottom plate) to encapsulate, when assembling, first fix the battery on the bottom plate, and then cover it with a cover plate. This ...

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Problems solved by technology

[0002] Power batteries are the core components of electric vehicles, and cylindrical batteries are widely used in electric vehicles due to the high energy density of the overall structure. When electric vehicles want to achieve long-range endurance, more batteries are needed, and the energy contained in cylindrical batteries is certain. , means that the car will run farther and will need more cylindrical lithium batteries. When assembling cylindrical lithium batteries, the more batteries there are, the more difficult it is to package the battery pack; in the prior art, two upper and lower plates (one cover plate, a base plate) to package, when assembling, first fix the battery on the base plate, and then use the cover plate to seal the cover. This structure requires that all fixed batteries and the fixing holes of the upper and lower brackets must be coaxial, and the actual product processing , there must be a deviation, the greater the number, the greater the deviation; when the upper bracket is used to package cylindrical batteries, as long as one cylindrical battery cannot be inserted into the round hole of the upper bracket, the entire battery group cannot be packaged. Arrangement, compact structure, and it is impossible to straighten a certain inclined battery

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