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US 2017/0324125 A1Published application
Cooling Arrangement for an Energy Storage Device
AssigneesBosch Battery Systems, LLC, Robert Bosch GmbH
InventorsRobert Schoenherr, Mark Kotik
Life of this patent
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Abstract
A battery pack includes a thermally conductive plate that can be cooled or heated, and an array of electrochemical cells. The cells include a stacked or rolled arrangement of electrode plates, and a current collector disposed in the battery cell that forms an electrical connection with the electrode plates and provides a thermal conduction pathway for conducting heat from the electrode plates to the thermally conductive plate.
Claims19
An electrochemical cell comprising
- a polyhedronal cell housing formed of a flexible laminate material, the cell housing including a first end, a second end opposed to the first end, and a multi-sided sidewall that extends between the first end and the second end,
- an electrode assembly disposed in the cell housing, the electrode assembly including a positive electrode plate, a negative electrode plate and a separator, the positive electrode plate stacked with the negative electrode plate, the separator disposed between the positive electrode plate and the negative electrode plate, the electrode assembly including a stack axis that extends in parallel to a stacking direction of the positive electrode plate, the negative electrode plate and the separator, the stack axis extending perpendicular to the cell housing first and second ends,
- a current collector disposed in the cell housing, the current collector comprising
- a collection portion disposed between the electrode assembly and one side of the multi-sided sidewall, the collection portion extending parallel to the one side and being electrically and thermally connected to one of the positive electrode plate and the negative electrode plate, and
- a fin portion that is electrically and thermally connected to the collection portion and extends in a direction parallel to the second end, and
- a terminal disposed on the outside of the cell housing so as to overlie the one side, the terminal being electrically and thermally connected to the collection portion.
3 more elements
A battery pack comprising
- a thermally-conductive plate configured to provide one of heating and cooling,
- electrochemical cells supported on the thermally-conductive plate, each cell including
- a polyhedronal cell housing formed of a flexible laminate material, the cell housing including a first end, a second end opposed to the first end and facing the thermally-conductive plate, and a multi-sided sidewall that extends between the first end and the second end,
- an electrode assembly disposed in the, cell housing, the electrode assembly including a positive electrode plate, a negative electrode plate and a separator, the positive electrode plate stacked with the negative electrode plate, the separator disposed between the positive electrode plate and the negative electrode plate, the electrode assembly including a stack axis that extends in parallel to a stacking direction of the positive electrode plate, the negative electrode plate and the separator, the stack axis extending perpendicular to the cell housing first and second ends,
- a current collector disposed in the cell housing, the current collector comprising
- a collection portion disposed between the electrode assembly and one side of the multi-sided sidewall, the collection portion extending parallel to the one side and being electrically and thermally connected to one of the positive electrode plate and the negative electrode plate, and
- a fin portion that is electrically and thermally connected to the collection portion and extends in a direction parallel to the second end, and
- a terminal disposed on the outside of the cell housing so as to overlie the one side, the terminal being electrically and thermally connected to the collection portion.
5 more elements
A battery pack comprising
- a thermally-conductive plate configured to provide one of heating and cooling,
- electrochemical cells supported on the thermally-conductive plate, each cell including
- a polyhedronal cell housing formed of a flexible laminate material, the cell housing including a first end, a second end opposed to the first end, and a multi-sided sidewall that extends between the first end and the second end, a first side of the multi-sided sidewall facing the thermally-conductive plate,
- an electrode assembly disposed in the cell housing, the electrode assembly including a positive electrode plate, a negative electrode plate and a separator, the positive electrode plate stacked with the negative electrode plate, the separator disposed between the positive electrode plate and the negative electrode plate, the electrode assembly including a stack axis that extends in parallel to a stacking direction of the positive electrode plate, the negative electrode plate and the separator, the stack axis extending perpendicular to the cell housing first and second ends,
- a first current collector disposed in the cell housing, the first current collector disposed between the electrode assembly and the first side, the first current collector extending parallel to the first side and being electrically and thermally connected to one of the positive electrode plate and the negative electrode plate,
- a second current collector disposed in the cell housing, the second current collector disposed between the electrode assembly and a third side of the multi-sided sidewall, the third side being opposed to the first side, the second current collector extending parallel to the third side and being electrically and thermally connected to the other of the positive electrode plate and the negative electrode plate,
- a first terminal disposed on the outside of the cell housing so as to overlie the cell housing, the first terminal being electrically and thermally connected to the first current collector, and
- a second terminal disposed on the outside of the cell housing so as to overlie the cell housing, the second terminal being electrically and thermally connected to the second current collector,
- wherein the positive current collector and the negative current collector each exit the cell housing at the first end, and
- the first current collector provides a thermal conduction path from the electrode assembly to the thermally-conductive plate via the first side.
7 more elements
Dependencies are inferred from the claim text.