Abstract: The disclosure provides a lithium ion battery module which includes: a plurality of cores, being winded cores, laminated cores or pouch batteries, one end of each core being provided with a positive tab and a negative tab, the plurality of cores being connected in series and/or in parallel by using positive tabs and negative tabs through connecting sheets, the positive tabs and negative tabs forming a total positive electrode; a plurality of partition members, each partition member being used for accommodating a single core and physically separating respective cores, the partition members having a top opened structure; and a housing and a cover plate, configured to form an inner space after being assembled for accommodating partition members and cores, the cover plate being provided with a connecting part for a total module positive electrode and a connecting part for a total module negative electrode.

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 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.