Battery cell assembly, battery pack, and means of transport including the same

Abstract

The battery cell assembly of the present invention includes a plurality of battery cells having anode terminals and cathode terminals, a housing provided for housing the plurality of battery cells, and a plurality of holder assemblies, each of the plurality of battery cells, provided detachably for each of the plurality of battery cells and provided to contact and electrically connect with the anode terminal, and a cathode busbar provided to connect to the cathode terminal.

Claims

1. Multiple battery cells equipped with anode and cathode terminals, A housing provided to accommodate the plurality of battery cells, A battery cell assembly characterized by including a plurality of holder assemblies, each of which is detachably provided to the plurality of battery cells and is provided to contact and electrically connect with the anode terminal, and a cathode busbar provided to connect to the cathode terminal.

2. The battery cell assembly according to claim 1, characterized in that the holder assembly is provided such that the cathode busbar and the cathode terminal come into contact when the anode terminal and the anode busbar come into contact.

3. The battery cell assembly according to claim 2, characterized in that the holder assembly is provided such that when the battery cell is separated from the holder assembly, the anode terminal and the cathode terminal are separated in order from the anode busbar and the cathode busbar.

4. Each of the aforementioned holder assemblies is The battery cell assembly according to claim 1, characterized in that it includes an anode mold which is electrically insulating and is bonded such that a portion of the anode busbar is exposed to the outside.

5. The aforementioned cathode busbar is The battery cell assembly according to claim 4, characterized in that it is coupled to the anode mold and has an anode exposure port formed such that an exposed portion of the anode busbar is exposed to the outside.

6. The aforementioned anode busbar is The anode disc portion located at the bottom of the anode mold, An anode connection unit having a shape that protrudes from the anode disc portion toward the anode terminal and provided to elastically press the anode terminal, The battery cell assembly according to claim 5, characterized by including an anode projection that extends from the anode disc so as to be inserted into the anode exposure port.

7. The anode connection unit is A conductive main body portion provided to be inserted into the anode mold, A conductive pressurizing movable part is provided at the lower part of the main body, is in direct contact with the anode terminal, and is movable in a direction that pressurizes the anode terminal, The battery cell assembly according to claim 6, characterized in that it includes an elastic member built into the main body and provided to elastically pressurize the pressurizing moving portion toward the anode terminal.

8. At least one through hole is formed in the anode disc portion. The anode connection unit is The battery cell assembly according to claim 7, characterized in that a stopper is provided on the main body to prevent the pressurized moving part from moving in the insertion direction while it is inserted into the through hole.

9. The anode mold is A molded disc portion provided to cover the upper part of the anode disc portion, and The battery cell assembly according to claim 7, characterized in that it includes a molded projection that protrudes upward from the molded disc portion so as to cover the side portion of the anode projection, and has an exposure hole formed therein so that the upper part of the anode projection of the coupled anode busbar is exposed to the outside.

10. The aforementioned cathode busbar is A cathode disc portion that is coupled to the housing, A cathode protrusion is formed convexly upward from the cathode disc portion so as to form a housing space in which the anode mold is housed, The battery cell assembly according to claim 4, further comprising: a cathode connection portion that is bent downward from the cathode disc portion and extends from the cathode disc portion so as to be in direct contact with the cathode terminal.

11. The cathode connection part is A connection opening is formed in part, The battery cell assembly according to claim 10, characterized in that a connecting projection is formed which extends for a long distance from the inner circumference of the connecting opening and is bent so as to protrude toward the cathode terminal in part, allowing for elastic pressure.

12. The cathode connection part is The battery cell assembly according to claim 10, characterized in that it is provided with a connecting projection that partially protrudes toward the cathode terminal so as to enable elastic pressurization.

13. The housing includes a housing portion for housing the holder assembly, The battery cell assembly according to claim 12, characterized in that the housing portion has a fixing groove formed therein, into which the cathode connection portion of the cathode busbar is fitted and inserted.

14. The aforementioned housing is The battery cell assembly according to claim 1, characterized in that it has an anode opening that is open so that the anode busbar is exposed to the outside, and a cathode opening that is open so that the cathode busbar is exposed to the outside.

15. The aforementioned housing is An upper cover provided to cover the upper and middle parts of the plurality of battery cells, The battery cell assembly according to claim 14, characterized in that it includes a lower cover provided to cover the lower part of the plurality of battery cells.

16. The battery cell assembly according to claim 15, further comprising a plurality of connecting members mounted on the upper part of the upper cover, each having at least one of an anode contact portion that contacts the anode busbar through the anode opening and a cathode contact portion that contacts the cathode busbar through the cathode opening.

17. The battery cell assembly according to claim 16, characterized in that the cathode busbar is incorporated into the upper cover by injection molding.

18. The aforementioned lower cover is The battery cell assembly according to claim 15, characterized by having a plurality of mounting grooves having a storage space for accommodating the lower part of each of the plurality of battery cells.

19. A battery pack comprising at least one battery cell assembly and a battery management system (BMS) as described in any one of claims 1 to 18.

20. A means of transport, characterized by including the battery pack described in claim 19.

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