Standard lithium battery pack

Abstract

The invention discloses a 18650 standard lithium battery pack which comprises a standard square shell. Two lithium battery modules are arranged in the square shell, each lithium battery module comprises two battery supports, 20 battery core holes are transversely formed in each battery support, 18650 lithium battery cores are arranged in the battery core holes, connection pieces are arranged on the outer sides of the two battery supports, the lithium battery cores are connected in parallel through the connection pieces, the top ends of the outer sides of the two battery supports are each provided with two protruding blocks, the protruding blocks and the top end faces of the battery supports form an installation base, a lithium battery protector is fixed to the installation base and is connected with a pin, and an insulating plate is disposed between the two lithium battery modules. The battery supports similar to a honeycomb shape are adopted in a standard module structure so that the lithium battery cores of different numbers can be connected to the battery supports, lithium battery packs of different voltages are manufactured, production cost is greatly lowered, reliability is good, and lead acidification and modularization of lithium batteries are truly achieved.

Description

technical field [0001] The invention belongs to the field of lithium ion batteries and relates to a standardized lithium battery pack used for electric bicycles. Background technique [0002] Traditional electric bicycles use lithium batteries with 18650 standard batteries (that is, 18 means the diameter of the battery is 18mm, 65 means the length of the battery is 65mm, and 0 means the shape of the battery is round). Due to the limitations, it usually adopts multiple structures and multiple voltage types, which cannot achieve real lead acidification and modularization. That is to say, the same module structure can often only produce lithium battery packs with one voltage. The internal structure of this lithium battery pack is relatively fixed. If other different voltages are required, the structure of the battery pack may need to be redesigned and adjusted. Production, or several modules need to be connected in series and parallel, which greatly increases the cost. [000...

AI Technical Summary

Problems solved by technology

These two physical protectors for lithium batteries use the physical characteristics of shape memory alloys and double gold sheets that can be deformed under the influence of temperature, simplify the complex protection system of lithium-ion batteries, and overcome the current limitations of electronic semiconductor switches (such as MOSFETs). There are defects such as short life, poor stability, weak anti-interference ability, weak high-voltage resistance ability, and poor over-current resistance ability.

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