Battery cell comprising at least one galvanic cell, battery, and method for producing a battery cell

Abstract

The invention relates to a battery cell (20), comprising at least one galvanic cell, a first cell housing element (12), and a second cell housing element (16), wherein the two cell housing elements (12, 16) jointly substantially completely enclose the galvanic cell, wherein the first cell housing element (12) has inner recesses (30) on the inner surface (13) thereof, which inner recesses are, on an outer surface (14) of the first cell housing element (12) lying immediately opposite the inner surface (13), outer protrusions (30) for electrically contacting a first further battery cell (20), and / or the second cell housing element (16) has inner protrusions (40) on the inner surface (17) thereof, which inner protrusions are, on an outer surface (18) of the second cell housing element (16) lying immediately opposite the inner surface (17), outer recesses (40) for electrically contacting a second further battery cell (20), characterized by first compensation elements (50, 65-69) and / or second compensation elements (62, 63), wherein the first compensation elements (50, 65-69) are complementary to the inner recesses (30) in such away and are arranged in the inner recesses (30) in such a way that the first compensation elements (50, 65-69), together with the inner recesses (30), form a substantially flat inner surface (13) of the first cell housing element (12), and / or the second compensation elements (62, 63) are complementary to the inner protrusions (40) in such a way and are arranged in such a way that the second compensation elements (62, 63), together with the inner protrusions (40), form a substantially flat inner surface (17) of the second cell housing element (16).

Description

technical field [0001] The invention relates to a battery cell comprising at least one galvanic cell, a battery and a method for producing the battery cell. Background technique [0002] A variety of battery cells are known which include one or more primary cells. These battery cells generally each include a battery casing which encloses or surrounds the primary cells. [0003] The battery housings of the battery cells often have protrusions and / or recesses, so that the battery housings or primary cells can be electrically connected to other battery cells in the battery housing. The projections and / or depressions can be formed, for example, by deep drawing. Thus, each protrusion on the outer surface of the battery case is a depression on the inner surface of the battery case, and each recess on the outer surface of the battery case is a recess on the inner surface of the battery case of the protrusion. [0004] A disadvantage in this regard is that pressure peaks can gen...

AI Technical Summary

Problems solved by technology

In this case, an uneven pressure distribution can often occur in the (lowest) galvanic cell due to gravity and / or pressure

Furthermore, the primary cells can generally expand during charging / discharging, whereby they are pressed against the uneven inner surface of the cell housing, whereby an uneven pressure distribution often also results

[0005] This can lead to damage to the primary battery under unfavorable conditions

This can also shorten the life of the battery pack cells in unfavorable circumstances

In addition, the battery housing generally has to be designed more stably in order to withstand pressure peaks, as a result of which the battery housing usually has a greater weight

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