BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

1 . A battery cell, comprising:

a first electrode terminal and a second electrode terminal with opposite polarities;

an electrode assembly comprising a first tab and a second tab with opposite polarities, the first tab and the second tab being located at the same end of the electrode assembly; and

an adapter comprising a first adapter portion and a second adapter portion, the first adapter portion being used to connect the first tab and the first electrode terminal, and the second adapter portion being used to connect the second tab and the second electrode terminal;

wherein the adapter is further provided with a first insulating portion, the first insulating portion is used to connect the first adapter portion and the second adapter portion, and the first insulating portion is located between the first adapter portion and the second adapter portion to prevent electrical connection between the first adapter portion and the second adapter portion.

2 . The battery cell according to claim 1 , wherein in the length direction of the adapter, the first insulating portion is continuously arranged between the first adapter portion and the second adapter portion.

3 . The battery cell according to claim 1 , wherein the first insulating portion is made of a flexible material, and the adapter is shaped by bending.

4 . The battery cell according to claim 1 , wherein the first insulating portion comprises a plurality of insulating blocks arranged at intervals, and the plurality of insulating blocks are arranged between the first adapter portion and the second adapter portion.

5 . The battery cell according to claim 4 , wherein the adapter is shaped by bending at intervals between at least two adjacent insulating blocks.

6 . The battery cell according to claim 1 , wherein in the thickness direction of the adapter, the first insulating portion protrudes from surfaces of the first adapter portion and the second adapter portion to form a first protruding part.

7 . The battery cell according to claim 6 , wherein in the length direction of the adapter, the first insulating portion is arranged at one end of the adapter, the first adapter portion and the second adapter portion have a gap at the other end of the adapter, and the adapter is shaped by bending so that the first protruding part is inserted into the gap.

8 . The battery cell according to claim 6 , wherein in the thickness direction of the adapter, the height of the first protruding part is greater than or equal to a maximum thickness of the first adapter portion or the second adapter portion.

9 . The battery cell according to claim 1 , wherein a spacing space is arranged between the first tab and the second tab, the first insulating portion protrudes toward the spacing space to form a second protruding part, and at least part of the second protruding part is located in the spacing space.

10 . The battery cell according to claim 3 , wherein a region near the bend on the adapter is provided with a weak region.

11 . The battery cell according to claim 1 , wherein the first electrode terminal and the second electrode terminal are located at the same end of the battery cell, the battery cell further comprises a second insulating portion, the second insulating portion is used to connect the first electrode terminal and the second electrode terminal, and the second insulating portion is located between the first electrode terminal and the second electrode terminal to prevent electrical connection between the first electrode terminal and the second electrode terminal.

12 . A battery, comprising:

the battery cell according to claim 1 ; and

a box body used to accommodate the battery cell.

13 . An electrical apparatus, comprising the battery according to claim 12 , the battery being used to provide electric energy.