Temperature control for a battery module and method for operating such

A battery module with a plurality of battery cells (2), the battery module comprising:

• a first temperature control member (3) and second temperature control member (4), which are connected together directly thermally conductively in places, wherein the plurality of battery cells (2) is connected directly thermally conductively with the second temperature control member (4), and at least one switchably configured Peltier element (5), which is connected thermally conductively with the first temperature control member (3) and the second temperature control member (4), is arranged between the first temperature control member (3) and the second temperature control member (4),
• characterized in that
• a control device (6) is configured to, depending on ambient conditions of the plurality of battery cells (2), drive the at least one Peltier element (5) in such a way that, when switched on, the at least one Peltier element (5) (i) transfers heat from the second temperature control member (4) to the first temperature control member (3) when the ambient conditions are in a first state and (ii) transfers heat from the first temperature control member (3) to the second temperature control member (4) when the ambient conditions are in a second state,
• wherein the second temperature control member (4) has at least one recess (88),
• wherein the at least one recess (88) has a first portion in which the at least one Peltier element (5) is accommodated, and
• wherein the at least one recess (88) has a second portion that extends from the first portion to a sidewall of the second temperature control member (4).