Lithium battery for electric vehicle

Abstract

The present application relates to the technical field of lithium batteries, in particular to a lithium battery for electric vehicles, the lithium battery includes a cell module, the cell module includes a connection plate and at least two battery chips, A board body made of material, on which pads and at least two sets of lug holes are arranged, the battery cell includes a battery cell body and a battery cell lug connected to one end of the battery cell body, and the battery lug Pass through the lug hole from the back of the connecting plate, bend toward the pad and weld it on the pad, all the cell bodies are stacked and fixed in sequence, and supporting spacers are provided between adjacent cell bodies In order to keep expansion gaps between adjacent battery chips, the problems of easy deformation of the battery and easy falling off of solder joints are solved as a whole through the cooperation of the connecting plate and the supporting spacer.

Description

technical field [0001] The present application relates to the technical field of lithium batteries, in particular to a lithium battery for electric vehicles. Background technique [0002] With the reduction of petroleum energy and the improvement of environmental awareness, electric vehicles are receiving more and more attention, and their popularity is getting higher and higher. Electric vehicles basically use batteries as energy sources, and convert electrical energy into mechanical energy through controllers, motors and other components. It can be seen that the battery is the energy source of the electric vehicle and belongs to the core component. At present, lithium-ion batteries (referred to as lithium batteries) are more efficient, safer, environmentally friendly, lighter in weight and longer in service life than traditional lead-acid batteries. Therefore, most electric vehicles use lithium batteries as battery components. [0003] The current lithium batteries for e...

Images