Abstract:
The present disclosure includes a battery module having a plurality of battery cells disposed in a housing. Each of the plurality of battery cells has a positive terminal, a negative terminal, an overcharge protection assembly, and a casing having an electrically conductive material. The overcharge protection assembly includes a vent, a first spring component, a second spring component, and an insulative component. The first spring component is coupled to the positive terminal, the second spring component is coupled to the negative terminal, the insulative component is between the first spring component and a conductive piece and between the second spring component and the conductive piece, and the vent is configured to drive the insulative component from between the first and second spring components and the conductive piece, such that the first and second spring components contact the conductive piece, when a pressure in the casing exceeds a threshold.
Abstract:
A battery includes a cell element that is disposed in a housing, and the housing is sealed with a top cover made primarily of plastic. The top cover may include a layer of metallic foil, which may make the top cover more impermeable to moisture. The top cover may also include a vent, which may or may not utilize the metallic foil to determine the primary opening force of the vent. The top cover may also have one or more stiffening ribs that extend downwardly from a bottom portion of the top cover to contact the cell element, so as to limit movement of the cell element within the housing. In addition, the top cover may have one or more conductive terminals that are at least partially overmolded by the plastic of the top cover.
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:
The present disclosure includes a battery module that includes a plurality of lithium ion battery cells disposed within a battery module packaging. Each of the plurality of lithium ion battery cells is individually held in place within the battery module packaging by a restraining medium. The restraining medium conformally covers a substantial portion of the surface of each of the plurality of lithium ion battery cells and prevents each of the plurality of lithium ion battery cells from expanding during operation of the battery module.
Abstract:
The present disclosure includes a battery module having a power assembly that includes a plurality of battery cells and a plurality of bus bars that electrically couples a terminal of each of the plurality of battery cells to a terminal of an adjacent battery cell of the plurality of battery cells. The battery module also includes a lead frame that includes a plurality of cell taps respectively electrically coupled to the plurality of bus bars of the power assembly, and a plurality of leads that extends from the plurality of cell taps. The lead frame also includes a plurality of broken interconnects that electrically isolates the plurality of cell taps from one another and electrically isolates the plurality of leads from one another.
Abstract:
A system includes a battery cell having a packaging and a coil disposed within the packaging. The battery cell further includes a first terminal electrically coupled to a portion the coil and protruding through an opening in the packaging, wherein the first terminal is hermetically sealed at the opening in the packaging using a compressive force.
Abstract:
The present disclosure includes a lithium-ion battery module that has a housing and a plurality of lithium-ion battery cells disposed in the housing. Each of the plurality of lithium-ion battery cells includes a first terminal with a first polarity, a second terminal with a second polarity opposite to the first polarity, an overcharge protection assembly, and a casing electrically coupled to the first terminal such that the casing has the first polarity, the casing having an electrically conductive material. The lithium-ion battery module includes a vent of the overcharge protection assembly electrically coupled to the casing and a conductive component of the overcharge protection assembly electrically coupled to the second terminal. The vent is configured to contact the conductive component to cause a short circuit and to vent a gas from the casing into the housing when a pressure in the casing reaches a threshold value.
Abstract:
The present disclosure includes a battery module having a group of electrically interconnected electrochemical cells, a battery module terminal configured to be coupled to a load for powering the load, and an electrical path extending between the group of electrically interconnected electrochemical cells and the battery module terminal, where the electrical path includes a bus bar bridge. The battery module also includes a housing, where the group of electrically interconnected electrochemical cells is disposed within the housing, and the housing includes a pair of extensions positioned along sides of the bus bar bridge and configured to retain the bus bar bridge and to block movement of the bus bar bridge in at least one direction.
Abstract:
The present disclosure includes a battery module having a stack of electrochemical cells that includes terminals, a housing that receives the stack of electrochemical cells, and a bus bar carrier disposed over the stack of electrochemical cells such that bus bars disposed on the bus bar carrier interface with the terminals of the stack of electrochemical cells. The bus bar carrier includes opposing first and second guide extensions, the stack of electrochemical cells is disposed between the opposing first and second guide extensions, and the opposing first and second guide extensions physically contact a first outer electrochemical cell and a second outer electrochemical cell, respectively, of the stack of electrochemical cells to guide the terminals of the stack of electrochemical cells toward corresponding ones of the bus bars disposed on the bus bar carrier.