Abstract: Provided are a lithium-ion battery and a preparation method therefor. The preparation method comprises the steps of connecting a plurality of cells in series and/or in parallel and then sealing to obtain a module, with the cells being jelly-rolls or stacking-rolls. According to the preparation method, the process is simple, and a battery housing shell and a module housing are combined into a whole, thereby greatly reducing the cost. Moreover, in the design of battery, the battery is internally provided with a heating sheet of graphene, etc., so as to overcome the low-temperature bottleneck of the lithium-ion battery. The standardized battery directly achieves integrated manufacturing from jelly-rolls or stacking-rolls into a module, has the characteristics of a low cost, a high energy density, a wide temperature range, high safety and a long service life, and omits the post-manufacturing procedure for the module so as to reduce the production cost.

Abstract: The present disclosure provides a large pouch module and an electric vehicle including the same. The large pouch module includes a plurality of core modules and a housing accommodating the core modules; each of the core modules includes a plurality of core assemblies connected in series, and the plurality of core assemblies are folded in an M-folding manner to form the core module; a plurality of partition plates are vertically arranged inside the housing to partition an interior of the housing into a plurality of spaces. The large pouch module of the present disclosure can be used as the battery of the electric vehicle, which has a low cost, an excellent performance, safety and reliability, and wide application fields.

Abstract: Provided are a soft-package module and an electric vehicle comprising same. The soft-package module comprises at least two module assemblies. Each module assembly is arranged in the length direction of the module assembly, and a intermediate end plate which is used for fixing the module assemblies is arranged between every two adjacent module assemblies. The soft-package module of the present disclosure has a relatively high volume utilization rate.

Abstract: The present invention provides a lithium ion battery module and an application thereof. The lithium ion battery module comprises: a plurality of cores, wherein the cores are roll cores, laminated cores or soft package batteries, one end of each core is respectively provided with a positive electrode tab and a negative electrode tab, the positive electrode tabs and the negative electrode tabs of the plurality of cores are connected in series and/or in parallel by means of connecting sheets, and a total positive electrode of the module and a total negative electrode of the module are formed; a plurality of separation parts, each used for accommodating a single core and physically separating each core, the separation part having a structure with an opening at the upper side; a shell; and a cover plate.