Connecting assembly, battery module, battery pack, and device using battery module as power supply
The present application discloses a connecting assembly, a battery module, a battery pack, and a device using the battery module as a power supply. The connecting assembly includes a plurality of connecting sheets and an insulating film, where each of the plurality of connecting sheets includes an adjusting portion and a connecting portion, the adjusting portion is configured as a protrusion connected between adjacent connecting portions, the connecting portion is configured to connect a battery cell of the battery module, and the insulating film is disposed on one side of each of the plurality of connecting sheets, and the insulating film is provided with a through hole disposed corresponding to the adjusting portion. Through the solutions in the present application, the problem that the insulating film is wrinkled and torn due to the protrusion is avoided, and the manufacturing efficiency of the connecting assembly can be improved.
1. A connecting assembly for a battery module, comprising:
a plurality of connecting sheets, wherein each of the plurality of connecting sheets comprises an adjusting portion and a connecting portion, the adjusting portion is configured as a protrusion connected between adjacent connecting portions, and the connecting portion is configured to connect a battery cell of the battery module; and
an insulating film, disposed on one side of each of the plurality of connecting sheets and provided with a through hole disposed corresponding to the adjusting portion;
wherein the through hole comprises a second through hole, the second through hole is located at the adjusting portion, and the second through hole comprises a protruded portion attached to the adjusting portion.
2. The connecting assembly according to claim 1 , wherein the protruded portion is connected to an inner side of a hole wall of the second through hole and extends towards the adjusting portion.
3. The connecting assembly according to claim 2 , wherein the protruded portion is connected to the inner side of the hole wall of the second through hole located in a length direction.
4. The connecting assembly according to claim 1 , wherein the protruded portion is a tongue-shaped structure or a square structure.
5. The connecting assembly according to claim 1 , wherein a width of the second through hole is greater than or equal to a width of the adjusting portion.
6. The connecting assembly according to claim 1 , wherein the protruded portion covers a gap a between the second through hole and the adjusting portion.
7. The connecting assembly according to claim 1 , wherein the insulating film comprises a first insulating film and a second insulating film which are disposed on two sides of the plurality of connecting sheets respectively, and the first insulating film and the second insulating film are both provided with the through hole.
8. The connecting assembly according to claim 1 , further comprising a sampling assembly, wherein the sampling assembly is connected to the plurality of connecting sheets, and the sampling assembly and the plurality of connecting sheets are connected into an integrated structure through the insulating film.
9. The connecting assembly according to claim 1 , wherein an arc transition is adopted between the adjusting portion and the connecting portion.
10. The connecting assembly according to claim 1 , wherein the section of the protrusion of the adjusting portion is arc-shaped.
11. A battery module, comprising a plurality of stacked battery cells and the connecting assembly as defined in claim 1 , wherein the plurality of connecting sheets are connected to electrode leads of the plurality of battery cells.
12. A battery pack, comprising a box body and the battery module as defined in claim 11 , wherein the battery module is accommodated in the box body.
13. A device using a battery module as a power supply, the device comprising a driving device and the battery module as defined in claim 11 , wherein the driving device is configured to provide a driving force for the device, and the battery module is configured to provide electric energy to the driving device.