Fly line grouping typed power battery pack

Abstract

The invention discloses a fly line grouping typed power battery pack. The power battery pack of the invention comprises N groups of single batteries and parallel connection components, wherein each group of single batteries includes M single batteries, a one-to-one correspondence relationship exists between single batteries of two adjacent groups, and the M single batteries in each group are connected in series in sequence. One end of at least one parallel connection component is connected between two adjacent single batteries of one group of single batteries of the N groups and a second end is connected to at least one other group of single batteries, and the other end of a plurality of the parallel connection components which are connected between all the two adjacent single batteries of the same group is connected between two adjacent single batteries of at least two other groups of single batteries, so that the N groups of single batteries are connected in parallel by the plurality of the parallel connection components. A one-to-one correspondence relationship exists between two adjacent single batteries of one group and two adjacent single batteries of another group. The fly line grouping typed power battery pack of the invention has the advantages of good security and high reliability. Besides, precise management can be carried out on each single battery.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a grouped power battery pack with flying leads. Background technique [0002] At present, most automobiles mainly use internal combustion engines such as diesel engines or gasoline engines as power sources. However, with the depletion of global oil resources and the increasingly severe environmental problems such as the greenhouse effect, countries are paying more and more attention to energy and environmental issues, and have introduced more and more stringent Therefore, in this context, new energy vehicles must be vigorously developed. Among them, electric vehicles (including pure electric vehicles and hybrid vehicles, etc.) have become the mainstream development direction of new energy vehicles and are recognized by most people due to their extensive sources of electric energy and relatively mature battery and motor technologies. In order to meet the needs of the vehi...

AI Technical Summary

Problems solved by technology

The configuration of series first and then parallel is to connect the battery cells in series with wires with negligible resistance to form a series branch of appropriate total voltage, and then connect several series branches in parallel through wires with negligible resistance and connect them to the whole On the vehicle power bus, although such a configuration is beneficial for the battery management system to collect the voltage of each battery for accurate battery management, the reliability of the battery pack is poor. unable to continue output

Therefore, the current mainstream configuration is parallel first and then series, that is, on the basis of series first and then parallel configuration, wires with negligible resistance are used as parallel components to connect all adjacent battery cells in parallel positions. The reliability of the type battery pack is high, but the safety is poor in the case of battery short-circuit failure, and it is not conducive to the precise management of the battery pack by the battery management system

[0004] It can be seen from the above that the traditional power battery group technology has disadvantages such as low reliability, poor safety, and is not conducive to the precise management of battery cells.

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