Battery cell, battery module, and application of such a battery module
AssigneeRobert Bosch GmbH
InventorsEduard Reimer, Martin Koehne
Life of this patent
Estimating the term…
Abstract
A battery cell, specifically a lithium-ion battery cell, having a prismatic battery cell housing (6), in which the electrochemical components of the battery cell (2) are accommodated, and further comprising a thermal equalization element (8), which is configured for the enhancement of thermal conductivity, which is arranged on a smallest lateral surface (64) of the battery cell housing (6), such that a region (9) of the smallest lateral surface (64) which is not covered by the thermal equalization element (8) at least partially encloses said thermal equalization element (8).
Claims19
A battery module comprising a plurality of battery cells (2) each having a prismatic battery cell housing (6), in which electrochemical components of the battery cell (2) are accommodated, wherein the plurality of battery cell housings (6) are arranged next to one another and in abutment with one another along a direction, wherein the battery module further includes a plurality of thermal equalization elements (8) configured to conduct heat from the battery cell housings (6) to a cooling plate, wherein each of the plurality of battery cells (2) is associated with and coupled to a different one of the plurality of thermal equalization elements (8), such that for each battery cell (2), the associated thermal equalization element (8) is in abutment with a portion of a smallest lateral surface (64) of the battery cell housing (6), such that an uncovered region (9) of the smallest lateral surface (64), on which the thermal equalization element is not arranged, substantially circumferentially surrounds said thermal equalization element (8) at a location where the thermal equalization element (8) is in abutment with the lateral surface (64), and such that the smallest lateral surface of the battery cell and the thermal equalization element are configured to enhance thermal contact between the battery cell housing and the cooling plate as the battery cell deforms, wherein the thermal equalization elements (8) are separate from one another and spaced apart from one another along the direction.
A battery module comprising a single battery cell having a prismatic battery cell housing (6), wherein the prismatic battery cell housing (6) includes a first wall, a second wall, a third wall, a fourth wall, a fifth wall, and a sixth wall, wherein the first wall, the second wall, the third wall, the fourth wall, the fifth wall, and the sixth wall together define a single interior space in which electrochemical components of the battery cell (2) are accommodated, wherein the battery module further includes thermal equalization element (8) configured to conduct heat from the battery cell housing (6) to a cooling plate, wherein the thermal equalization element is in abutment with a portion of a smallest lateral surface (64) defined one of the first wall, the second wall, the third wall, the fourth wall, the fifth wall, or the sixth wall, such that an uncovered region (9) of the smallest lateral surface (64) on which the thermal equalization element is not arranged substantially circumferentially surrounds said thermal equalization element (8) at a location where the thermal equalization element (8) is in abutment with the lateral surface (64), such that the smallest lateral surface of the battery cell and the thermal equalization element are configured to enhance thermal contact between the battery cell housing and the cooling plate as the battery cell deforms.
Dependencies are inferred from the claim text.