A traction battery assembly includes battery cells of a battery array, and switches of the battery array. The switches are transitionable between a first configuration and a second configuration. When the switches are in the first configuration, the battery cells of the array are partitioned into a first number of groups of battery cells in parallel with each other. When the switches are in the second configuration, the battery cells of the array are partitioned into a different, second number of groups of battery cells in parallel with each other.

An integrated battery and cooling system (2) is provided, comprising a plurality of cells (10) and a heat sink arrangement (16). Each cell (10) comprises at least one electrical collector (27) of a first material coupled to a first electrically and thermally conductive electrical terminal (12) extending away therefrom, and at least one electrical collector (27) of a second material coupled to a second electrically and thermally conductive electrical terminal (14) extending away therefrom. The electrical terminals (12, 14) are substantially planar and form respective sidewalls of a series of elongate channels there-between. The heat sink arrangement (16) extends within each channel and is thermally coupled to at least one sidewall thereof.

An integrated battery and cooling system (2) is provided, comprising a plurality of cells (10) and a heat sink arrangement (16). Each cell (10) comprises at least one electrical collector (27) of a first material coupled to a first electrically and thermally conductive electrical terminal (12) extending away therefrom, and at least one electrical collector (27) of a second material coupled to a second electrically and thermally conductive electrical terminal (14) extending away therefrom. The electrical terminals (12, 14) are substantially planar and form respective sidewalls of a series of elongate channels there-between. The heat sink arrangement (16) extends within each channel and is thermally coupled to at least one sidewall thereof.

A cell holder for a battery cell includes an intake in which the battery cell is receivable. The cell holder is stackable with additional cell holders in a module frame in which a battery that has a plurality of battery cells is receivable. The cell holder is guidable in the module frame relative to the module frame by a guiding device.

A cell holder for a battery cell includes an intake in which the battery cell is receivable. The cell holder is stackable with additional cell holders in a module frame in which a battery that has a plurality of battery cells is receivable. The cell holder is guidable in the module frame relative to the module frame by a guiding device.

A battery module includes a plurality of stacked battery cells, a temperature sensor configured to measure the temperature of the battery cells and be coupled to a wire connected to the outside of the battery module, an inner plate configured to be coupled to the outside of the plurality of stacked battery cells in a stacking direction of the plurality of battery cells to cover the side surfaces of the plurality of battery cells and having a mounting groove to mount the temperature sensor therein, an outer plate configured to be coupled to the outside of the inner plate to apply a surface pressure to the plurality of stacked battery cells, and a fixing part configured to protrude from the inner plate to fix the wire extending from the temperature sensor, in which the fixing part is disposed to avoid the outer plate.

The present invention concerns a fire safety arrangement for a battery. More particularly, but not exclusively, this invention concerns a fire safety arrangement for a metal ion battery, for example a lithium ion battery. A metal ion battery cell comprises a plurality of electrodes and an electrolyte encased within a housing. The housing comprises a safety valve or vent configured to allow gas build up within the housing to vent outside the housing. A fabric band surrounds the housing, such that the fabric band covers the safety valve or vent. This may allow gas to pass through the fabric band, but contain sparks generated by the battery cell within the fabric band.

The present invention concerns a fire safety arrangement for a battery. More particularly, but not exclusively, this invention concerns a fire safety arrangement for a metal ion battery, for example a lithium ion battery. A metal ion battery cell comprises a plurality of electrodes and an electrolyte encased within a housing. The housing comprises a safety valve or vent configured to allow gas build up within the housing to vent outside the housing. A fabric band surrounds the housing, such that the fabric band covers the safety valve or vent. This may allow gas to pass through the fabric band, but contain sparks generated by the battery cell within the fabric band.

An apparatus for predicting a degree of deformation of a battery module, caused by swelling of a secondary battery. The battery module includes at least one secondary battery in a module case. The apparatus includes a cell evaluation module configured to derive a relationship between a thickness change amount and a reaction force for a single secondary battery; a case evaluation module configured to derive a relationship between a load applied to the module case and a width change amount of the module case; and a prediction module configured to predict a deformation amount of the battery module by using the relationship between the thickness change amount and the reaction force of the secondary battery, derived by the cell evaluation module, and the relationship between the load and the width change amount of the module case, derived by the case evaluation module.

The present disclosure relates to a battery module including: a battery cell stack in which a plurality of battery cells are stacked; and a pressure drop sheet on one side of the battery cell stack, in which the pressure drop sheet includes: a ventilation layer including ceramic fiber; and a sacrificial layer on at least one face of the ventilation layer, the sacrificial layer is disposed in a direction facing the battery cell stack, and the pressure drop sheet exhibits gas permeability at a critical temperature.