A battery pack packaging structure and battery pack

Abstract

The invention relates to a battery assembly packaging structure and a battery assembly, comprising a box body and a box cover sealed on the box body, the box cover is provided with first through holes in an array, and the inner side of the box cover is fixed in parallel with Multiple groups of packaging units; the packaging units include a casing, a cover disposed at the bottom of the casing, and a fixing device for fixing the packaging units on the box cover, and several groups of second through holes are distributed in an array on the casing, The first through hole and the second through hole are arranged coaxially, and the diameter of the first through hole is smaller than the diameter of the second through hole, and at least one lithium battery is embedded in the second through hole; the present invention adopts the packaging unit The structure of the battery pack and the setting of the box cover can greatly reduce the requirements for battery assembly accuracy. When all battery packaging units are assembled, a solid and stable battery pack will be formed; it can well solve the one-time problem of multiple cylindrical batteries. The problem of unsuccessful packaging, and to ensure assembly accuracy, the battery pack is stable and reliable.

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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