Provided are a secondary battery and a battery pack including the secondary battery. A sealing plate has a positive electrode terminal attachment hole. A positive electrode terminal penetrates the positive electrode terminal attachment hole. An external conductive member is connected to a portion of the positive electrode terminal located on the battery outer side with respect to the sealing plate. The conduction path between a positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. A first insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. A second insulating member having higher thermal resistance than the first insulating member is disposed between the external conductive member and the sealing plate.

A method of manufacturing a secondary battery including an electrode body element fabricating step in which a first electrode body element including a positive electrode plate and a negative electrode plate, and a second electrode body element including a positive electrode plate and a negative electrode plate are fabricated, a tab-connecting step in which a first positive electrode tab group of the first electrode body element and a second positive electrode tab group of the second electrode body element are connected to a second positive electrode collector, and a first negative electrode tab group of the first electrode body element and a second negative electrode tab group of the second electrode body element are connected to a second negative electrode collector, and an electrode body fabricating step in which, after the tab-connecting step, the first electrode body element and the second electrode body element are unified.

A method of manufacturing a secondary battery including an electrode body element fabricating step in which a first electrode body element including a positive electrode plate and a negative electrode plate, and a second electrode body element including a positive electrode plate and a negative electrode plate are fabricated, a tab-connecting step in which a first positive electrode tab group of the first electrode body element and a second positive electrode tab group of the second electrode body element are connected to a second positive electrode collector, and a first negative electrode tab group of the first electrode body element and a second negative electrode tab group of the second electrode body element are connected to a second negative electrode collector, and an electrode body fabricating step in which, after the tab-connecting step, the first electrode body element and the second electrode body element are unified.

A battery module comprising a plurality of battery cells (2), which are each connected electrically conductively in series and/or in parallel with one another, and comprising a switching device (3), which has a first terminal (31) and a second terminal (32), wherein a first electrically conductive connecting element (41) connects the first terminal (31) of the switching device (3) electrically conductively to a first terminal (51) of a fuse element (5), and a second terminal (52) of the fuse element (5) is electrically conductively connected to a voltage tap (61) of a terminally arranged battery cell (2, 21), and a second electrically conductive connecting element (42) connects the second terminal (32) of the switching device (3) electrically conductively to a voltage tap (62) of the battery module (1).

A battery module comprising a plurality of battery cells (2), which are each connected electrically conductively in series and/or in parallel with one another, and comprising a switching device (3), which has a first terminal (31) and a second terminal (32), wherein a first electrically conductive connecting element (41) connects the first terminal (31) of the switching device (3) electrically conductively to a first terminal (51) of a fuse element (5), and a second terminal (52) of the fuse element (5) is electrically conductively connected to a voltage tap (61) of a terminally arranged battery cell (2, 21), and a second electrically conductive connecting element (42) connects the second terminal (32) of the switching device (3) electrically conductively to a voltage tap (62) of the battery module (1).

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.

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 embodiment of the present application provides a battery cell, a battery, a power consumption device, and a manufacturing device and method for a battery cell. The battery cell includes a housing, an electrode assembly, an end cover assembly and a current collecting member. The electrode assembly is accommodated in the housing, and the electrode assembly includes a tab. The end cover assembly includes an end cover, an electrode terminal and an insulating member, the end cover is used to cover at an opening of the housing, the electrode terminal is mounted to the end cover, and the insulating member is located on one side of the end cover facing the electrode assembly. The current collecting member is used to connect the electrode terminal and the tab. This structure can make more space for the electrode assembly and can effectively increase the capacity of the battery cell.

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.