NIO Inc.
Unified battery module with integrated battery cell structural support

Abstract:

An energy storage device and structurally enhanced packaging for energy storage cells is provided. The energy storage device includes a number of energy storage cells spaced apart from one another and contained in a lightweight carrier. The energy storage cells and carrier are mechanically coupled together with a structural adhesive forming a unified structure and framework where each connection point acts as a node in a force distribution structure. The structural adhesive can be injected into the volume between the energy storage cells while in a fluid, or semi-fluid, state. While in this state, a retaining form or gasket inside the carrier can prevent the structural adhesive from leaking out of the energy storage device. When in a cured, or hardened, non-fluid state the structural adhesive may adhere to the various components of the energy storage device to mechanically join the component together into a structurally safe package.