Abstract:
The present disclosure relates generally to the field of batteries and battery modules, and more specifically, relates to a system and method for manufacturing terminal assemblies for lithium-ion battery modules. A disclosed battery module includes a terminal block assembly that is secured to a polymer housing of the battery module. The terminal block assembly includes a terminal post having a post portion and a base portion that extends outward from a central axis of the post portion. The terminal block assembly also includes a bus bar coupled to the base portion of the terminal post without welding, wherein the bus bar includes a trough disposed near the terminal post. The terminal block assembly further includes a polymer portion overmolding at least the trough of the bus bar to form a drainage channel near the terminal post.
Abstract:
Present embodiments include a lithium ion battery module having a lineup of prismatic lithium ion battery cells positioned within a cell receptacle area of a housing of the lithium ion battery module. The prismatic battery cells of the lineup are spaced apart from one another in a spaced arrangement by fixed protrusions extending from internal surfaces of the housing forming the cell receptacle area, and the fixed protrusions extend inwardly to form a plurality of discontinuous slots across a width of the cell receptacle area.
Abstract:
The present disclosure includes a battery module having a first battery cell with a first cell terminal, a second battery cell with a second cell terminal, a first adapter disposed about the first cell terminal, where the first adapter has a first recess positioned proximate to the first cell terminal, and a second adapter disposed about the second cell terminal, wherein the second adapter has a second recess positioned proximate to the second cell terminal. The battery module also includes a bus bar configured to electrically couple the first cell terminal to the second cell terminal via the first and second recesses and an electrically insulative shield configured to cover the first cell terminal and the second cell terminal when the bus bar is being coupled to the first and second recesses to prevent a short circuit.
Abstract:
The present disclosure relates to a lithium-ion battery module including a housing having a base, a battery cell in the housing, and a battery module terminal coupled to the battery cell via an electrical pathway, wherein the battery module terminal provides an electrical output when coupled to an electrical load, and wherein the electrical pathway is defined by a first portion, a second portion, and an interconnecting portion connecting the first and second portions. The first portion has a plurality of first conductive components coupled to one another within first connection planes using a first conductive material, and the first connection planes are substantially parallel to the base. The second portion has a plurality of second conductive components coupled to one another within second connection planes using a second conductive material, different from the first conductive material, and the second connection planes are crosswise to the first connection planes.
Abstract:
The present disclosure includes a battery module having a vent path with an exit port. The battery module also includes a vent pad disposed within the vent path and blocking at least a portion of the exit port, coupled to a boundary surface of the exit port via an adhesive layer between the vent pad and the boundary surface, and configured to enable venting through the exit port by separating from the boundary surface along the adhesive layer in response to a pressure against the vent pad exceeding a venting pressure threshold of the battery module.
Abstract:
The present disclosure includes a battery module having a housing configured to receive one or more electrochemical cells. The housing includes a bottom internal surface and a recessed portion disposed in the bottom internal surface and proximate to a low point on the bottom internal surface, wherein the recessed portion defines an airspace configured to retain fluid within the housing away from the one or more electrochemical cells.
Abstract:
Present embodiments are directed to a battery module including a venting assembly and a method of manufacturing the battery module. The venting assembly may, in certain embodiments, be designed to vent gases from a plurality of battery cells disposed in a housing of the battery module. Each of the plurality of battery cells may include a battery cell vent. The venting assembly may include a lid designed to be coupled to the housing and disposed over the battery cells in the housing. In some embodiments, the lid includes a vent chamber formed in the lid and designed to receive and direct gases vented from the plurality of battery cells away from the battery module.
Abstract:
The present disclosure relates to bonding or sealing metal parts to the polymer packaging of certain battery modules. The present disclosure includes a battery module having a polymer packaging with an interior and exterior and a plurality of battery cells disposed within the interior of the polymer packaging. The battery module includes a metal part that extends from the interior to the exterior of the polymer packaging and is in thermal or electrical contact with at least a portion of the plurality of battery cells. The metal part includes a bonding surface that is secured to an overmolded portion of the polymer packaging, wherein the bonding surface has a microsurface roughness that hermetically seals the bonding surface of the metal part to the overmolded portion of the polymer packaging.
Abstract:
The present disclosure includes a battery module having a first electrochemical cell and a second electrochemical cell positioned adjacent to the first electrochemical cell. The battery module also includes a separator plate disposed between the first electrochemical cell and the second electrochemical cell. The separator plate includes a body comprising a first side and a second side opposite the first side. The first side is disposed adjacent a first face of the first electrochemical cell and includes a first indention. The first indention defines a first space between the first face of the first electrochemical cell and the first side of the separator plate. The first space is configured to enable swelling of the first electrochemical cell into the first space.
Abstract:
A battery module includes a housing including a first interior surface, a second interior surface opposite the first interior surface, and a compressed cell assembly disposed within an interior space of the housing between the first and second interior surfaces. The compressed cell assembly includes a plurality of prismatic battery cells arranged in a cell stack that includes a first end, a second end opposite the first end, and a retaining wall disposed between the first end of the cell stack and the first interior surface of the housing. The retaining wall includes a first surface in contact with the first end of the cell stack and a second surface opposite the first surface that contacts the first interior surface of the housing. The first and second interior surfaces are configured to maintain the compressed cell assembly in a compressed state having a compression force above a predetermined threshold.