US 2018/0019459 A1Published application

Terminals of an electrochemical cell

AssigneeJohnson Controls Technology Company

InventorJonathan P. Lobert

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Abstract

An electrochemical cell includes a cell element and a casing configured to receive the cell element, the casing having a wall with a first terminal opening. The electrochemical cell includes a first terminal having a terminal post extending through the first terminal opening along a longitudinal axis of the terminal post, a first gasket extending into an interior of the casing and disposed radially between the terminal post and the wall to electrically insulate the terminal post from the wall, a second gasket extending exterior to the casing, positioned axially adjacent to the first gasket with respect to the longitudinal axis, and disposed radially between the terminal post and the wall to electrically insulate the terminal post from the wall, and a press ring disposed exterior to the casing and radially between the second gasket and the terminal post. The electrochemical cell also includes a second terminal.

Claims25

Dependent claims

An electrochemical cell, comprising;

a cell element;
a casing configured to receive the cell element, the casing comprising a wall having a first terminal opening;
a first terminal in electrical communication with a first electrode of the cell element and configured to interface with the first terminal opening;
a terminal post of the first terminal extending through the first terminal opening along a longitudinal axis of the terminal post;
a first gasket of the first terminal extending into an interior of the casing and disposed radially between the terminal post and the wall of the casing with respect to the longitudinal axis to electrically insulate the terminal post from the wall;
a second gasket of the first terminal extending exterior to the casing, positioned axially adjacent to the first gasket with respect to the longitudinal axis, and disposed radially between the terminal post and the wall of the casing with respect to the longitudinal axis to electrically insulate the terminal post from the wall;
a press ring of the first terminal disposed exterior to the casing and radially between the second gasket and the terminal post with respect to the longitudinal axis;
and
a second terminal in electrical communication with a second electrode of the cell element.

6 more elements

A lithium-ion battery module comprising a plurality of lithium-ion electrochemical cells, each lithium-ion electrochemical cell comprising:

a housing configured to receive a cell element and a lid configured to enclose the cell element within the housing, wherein the housing or the lid comprises a wall configured to interface with terminals of the lithium-ion electrochemical cell;
and
a first terminal comprising a bolt extending through an opening in the wall such that the bolt passes through the opening at a location along a longitudinal axis of the first terminal, a first gasket disposed radially between the bolt and the wall proximate the location to electrically insulate the bolt from the wall, a second gasket positioned axially adjacent to the first gasket and disposed radially between the bolt and the wall to electrically insulate the bolt from the wall, and a press ring disposed exterior to the housing, the press ring being axially adjacent to the second gasket such that the second gasket is disposed axially between the first gasket and the press ring, and the press ring being radially between the second gasket and the bolt.

A battery module, comprising:

a first electrochemical cell, a second electrochemical cell, and a third electrochemical cell, wherein each of the first, second, and third electrochemical cells comprises:
a cell element;
a casing configured to receive the cell element, the casing comprising a wall having a first terminal opening;
a first terminal in electrical communication with a first electrode of the cell element and configured to interface with the first terminal opening;
a terminal post of the first terminal extending through the first terminal opening along a longitudinal axis of the terminal post;
a first insulating gasket of the first terminal extending into an interior of the casing and disposed radially between the terminal post and the wall of the casing with respect to the longitudinal axis;
a second insulating gasket of the first terminal extending exterior to the casing, positioned axially adjacent to the first insulating gasket with respect to the longitudinal axis and disposed radially between the terminal post and the wall of the casing with respect to the longitudinal axis;
a press ring of the first terminal disposed exterior to the casing and radially between the second insulating gasket and the terminal post with respect to the longitudinal axis;
and
a second terminal in electrical communication with a second electrode of the cell element;
a first bus bar coupling the first terminal of the first electrochemical cell with the second terminal of the second electrochemical cell;
and
a second bus bar coupling the second terminal of the first electrochemical cell with the first terminal of the third electrochemical cell.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/210,635Filed 14 Jul 2016
Published: 18 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

B60K 1/04
Arrangement or mounting of electrical propulsion units: of the electric storage means for propulsion
B60R 16/033
For supply of electrical power to vehicle subsystems or for: characterised by the use of electrical cells or batteries
H01M 10/052
Accumulators with non-aqueous electrolyte: li-accumulators
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries