一种圆柱电池及电池模组
By setting conductive protrusions on the tabs and busbars, and setting limiting through holes on the insulating disk, the problem of unstable connection between the tabs, busbars and poles is solved, and a stable current channel and improved fast charging performance are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-17
AI Technical Summary
In existing cylindrical batteries, the connection stability between the tabs, busbars, and terminals is insufficient, resulting in the inability to form a stable current path.
Conductive protrusions are provided on the electrode tabs and the busbar, and limiting through holes are provided on the insulating disk. The electrode post passes through the cover plate and is inserted into the limiting through hole to connect with the conductive protrusion. The limiting structure ensures a stable connection between the electrode tab, the electrode post, and the busbar.
This ensures the stability of the connection between the tabs, terminals, and busbar, guarantees a stable current channel for the battery, and improves the fast charging performance of cylindrical batteries.
Smart Images
Figure CN224520145U_ABST
Abstract
Claims
1. A cylindrical battery, characterized by comprising: The device includes a housing (1), a cover plate assembly, and a bare battery cell (6) installed in the housing (1). The housing (1) has a top opening (101) and a bottom opening (102). The bare battery cell (6) is provided with a first tab (7) and a second tab (8) at the top and bottom. The cover plate assembly includes a cover plate body (2), a first pole post (3), a second pole post (4), an insulating disk (9), a first busbar (10) connected to the first pole tab (7), and a second busbar (11) connected to the second pole tab (8). The top opening (101) and bottom opening (102) of the housing (1) are both covered by the cover plate body (2). The insulating disk (9) is disposed on the side of the cover plate body (2) facing the interior of the housing (1). The first busbar (10) is provided with a first conductive protrusion (1001), and the second busbar (11) is provided with a second conductive protrusion (1101). The insulating disk (9) is provided with a first limiting through hole (901) and a second limiting through hole (902). The first conductive protrusion (1001) is inserted into the first limiting through hole (901), and the second conductive protrusion (1101) is inserted into the second limiting through hole (902). The cover plate body (2) is provided with a first through hole (201) and a second through hole (202); The first pole post (3) passes through the first through hole (201), and the bottom of the first pole post is inserted into the first limiting through hole (901) to connect with the first conductive protrusion (1001). The second pole post (4) passes through the second through hole (202), and the bottom of the second pole post is inserted into the second limiting through hole (902) to connect with the second conductive protrusion (1101).
2. The cylindrical battery according to claim 1, characterized by, The cover plate body (2) has a first positioning hole (203) and a second positioning hole on the side facing the inside of the housing (1); The insulating disk (9) has a first positioning post (903) and a second positioning post (904) protruding from the side facing the cover plate body (2). The first positioning post (903) is inserted into the first positioning hole (203), and the second positioning post (904) is inserted into the second positioning hole.
3. The cylindrical battery according to claim 2, characterized by It also includes a first insulating ring (302) and a first sealing ring (303); The first insulating ring (302) is sleeved on the outer side of the first pole post (3); The first limiting through hole (901) protrudes toward the cover plate body (2) to form a first annular protrusion wall (9011). A first preset space is reserved between the inner side of the first insulating ring (302) and the first annular protrusion (9011), and the first sealing ring (303) is installed in the first preset space.
4. The cylindrical battery according to claim 3, characterized by It also includes a second insulating ring (402) and a second sealing ring (403); The second insulating ring (402) is sleeved on the outer side of the second pole post (4); The second limiting through hole (902) protrudes toward the cover plate body (2) to form a second annular protrusion wall (9021); A second preset space is reserved between the inner side of the second insulating ring (402) and the second annular protrusion (9021), and the second sealing ring (403) is installed in the second preset space.
5. The cylindrical battery according to claim 4, characterized by The first pole post (3) includes a first pole post body (301) and a first annular protrusion (304) surrounding the outer side of the first pole post body (301). The first pole body (301) passes through the first through hole (201), and the bottom of the first pole body (301) is inserted into the first limiting through hole (901), and the first insulating ring (302) is sleeved on the first annular protrusion (304). The second pole post (4) includes a second pole post body (401) and a second annular protrusion (404) surrounding the outer side of the second pole post body (401). The second pole body (401) passes through the second through hole (202), and the bottom of the second pole body (401) is inserted into the second limiting through hole (902), and the second insulating ring (402) is sleeved on the second annular protrusion (404).
6. The cylindrical battery according to claim 1, characterized by The insulating disk (9) is provided with a first hollow welding area (905) for welding the first electrode (7) to the first busbar (10). The insulating disk (9) is provided with a second hollow welding area (906) for welding the second electrode (8) to the second busbar (11).
7. The cylindrical battery according to claim 1, characterized by The insulating disk (9) is further provided with a first positioning pin (907) and a second positioning pin (908) on the side facing the inside of the housing (1). The first busbar (10) is provided with a first positioning hole (1002) that cooperates with the first positioning pin (907), and the first positioning pin (907) is inserted into the first positioning hole (1002); The second busbar (11) is provided with a second positioning hole (1102) that cooperates with the second positioning pin (908), and the second positioning pin (908) is inserted into the second positioning hole (1102).
8. The cylindrical battery according to claim 1, characterized by, The cover body (2) provided in the top opening (101) is also provided with a liquid injection hole (5), which is in communication with the interior of the housing (1).
9. The cylindrical battery according to claim 1, characterized by, The first tab (7) is the positive tab, the first pole (3) is the positive pole, the second tab (8) is the negative tab, and the second pole (4) is the negative pole; Alternatively, the first tab (7) is the negative tab, the first pole (3) is the negative pole, the second tab (8) is the positive tab, and the second pole (4) is the positive pole.
10. A battery module, characterized by Including the cylindrical battery as described in any one of claims 1 to 9.