A battery pack for an electric vehicle or a hybrid vehicle may include a housing, a stack of battery cells disposed within the housing, and a cooling subassembly. The housing typically holds the cell stack together, and the cooling subassembly typically cools the cell stack to prevent damage to the battery cells and to maintain the performance of the battery cells. The cooling subassembly may include a cold plate defining a liquid flow channel and one or more thermoelectric devices (TEDs) that are operable to cool the cell stack when current is supplied thereto. Heat spreaders may be employed within the battery pack, and exemplary configurations of components to thermally and mechanically couple the cooling subassembly are described.

An object to provide a nonaqueous electrolyte secondary battery that allows more suitably suppressing short circuits between a positive electrode collector and a negative electrode active material layer, even when the battery generates heat. A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a positive electrode collector, a positive electrode active material layer, and an insulating layer provided on another part of the surface of the positive electrode collector, adjacent to the positive electrode active material layer. The insulating layer contains an inorganic filler and a binder; and is configure to exhibit a value of 13% or less of a thermal shrinkage factor in a direction parallel to the surface of an evaluation sample of an insulating layer formed to a square shape having a length of each side of 5 cm and heated at 150° C. for 1 hour.

An object of the present invention is to provide a nonaqueous electrolyte secondary battery that allows more suitably suppressing short circuits between a positive electrode collector and a negative electrode active material layer, even when the battery generates heat. Provided is a nonaqueous electrolyte secondary battery 1 that includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode collector, a positive electrode active material layer, and an insulating layer provided on another part of the surface of the positive electrode collector, so as to be adjacent to the positive electrode active material layer. The insulating layer contains an inorganic filler and a binder. A penetration strength of the insulating layer in a thickness direction perpendicular to the surface of the positive electrode collector is 0.05 N/mm.sup.2 or higher.

A method of controlling a PE-battery water cooling system for a green vehicle enables cooling of PE components and a battery by means of a cooperative control between a PE cooling system and a battery cooling system even when a part among the components of the PE-battery water cooling system fails.

A method of controlling a PE-battery water cooling system for a green vehicle enables cooling of PE components and a battery by means of a cooperative control between a PE cooling system and a battery cooling system even when a part among the components of the PE-battery water cooling system fails.

A flexible heat transfer material 1 for thermally contacting at least one cell within a battery pack 10, and a method of forming a flexible heat transfer material 1. The flexible heat transfer material 1 is conformable to at least part of the surface shape of at least one cell 20. The flexible heat transfer material 1 comprises a matrix 2 and a filler 3, wherein the thermal conductivity of the filler 3 is greater than the thermal conductivity of the matrix 2.

A flexible heat transfer material 1 for thermally contacting at least one cell within a battery pack 10, and a method of forming a flexible heat transfer material 1. The flexible heat transfer material 1 is conformable to at least part of the surface shape of at least one cell 20. The flexible heat transfer material 1 comprises a matrix 2 and a filler 3, wherein the thermal conductivity of the filler 3 is greater than the thermal conductivity of the matrix 2.

A rechargeable battery pack, which has: a thin compact layer or skin (9) of matrix (4) on the surfaces of contact of the latter with the outer walls (8a) of the batteries (2) and the inner walls (8b) of the container (3), which promotes the heat dissipation from the batteries to the outside of the battery pack (1); and portions (10) of foamed or expanded matrix (4), which fill the empty spaces between the batteries and the walls of the container and which are suitable for reducing the total weight of the battery pack (1) compared with a compact non-foamed matrix.

In comparison with the prior art embodiments, the invention allows a rechargeable battery pack to be produced that combines a lower weight with the thermal conductivity values required to dispose of the heat generated in the battery recharge phase.

A rechargeable battery pack, which has: a thin compact layer or skin (9) of matrix (4) on the surfaces of contact of the latter with the outer walls (8a) of the batteries (2) and the inner walls (8b) of the container (3), which promotes the heat dissipation from the batteries to the outside of the battery pack (1); and portions (10) of foamed or expanded matrix (4), which fill the empty spaces between the batteries and the walls of the container and which are suitable for reducing the total weight of the battery pack (1) compared with a compact non-foamed matrix.

In comparison with the prior art embodiments, the invention allows a rechargeable battery pack to be produced that combines a lower weight with the thermal conductivity values required to dispose of the heat generated in the battery recharge phase.

A battery module with an ability of homogenizing temperatures includes at least one battery pack and at least one temperature homogenizing element. The at least one battery pack includes a plurality of batteries. The plurality of the batteries are divided into a middle group of the batteries and an outer group of the batteries. The outer group of the batteries surround the middle group of the batteries. The at least one temperature homogenizing element is mounted around the middle group of the batteries. The at least one temperature homogenizing element has a plurality of fixing holes. The middle group of the batteries are inserted into the plurality of the fixing holes, and the outer group of the batteries are attached to an outer surface of an outer wall of the at least one temperature homogenizing element.