Output electrode base, battery module and battery pack

1. An output electrode base of a battery module, wherein the output electrode base comprises a base body and a connector;

wherein the connector comprises a securing member and a connecting post, the securing member is secured in the base body, and the connecting post protrudes from the base body; and

wherein the connecting post is configured to penetrate through a first installing hole of an output electrode connection piece of the battery module and connect with the output electrode connection piece of the battery module to realize connection between the output electrode connection piece and the base body.

2. The output electrode base in accordance with claim 1 , wherein the connector further comprises a metal plate above the base body, and the metal plate is configured to abut against the output electrode connection piece; the connecting post of the connector is a metal structure.

3. The output electrode base in accordance with claim 1 , wherein the securing member comprises a first securing member and a second securing member;

the first securing member and the second securing member are disposed axially relative to the connecting post, wherein the second securing member is configured to contact with the base body radially and axially, and a radial size of the second securing member is greater than a radial size of the first securing member.

4. The output electrode base in accordance with claim 3 , wherein the securing member further comprises a third securing member, and the third securing member is disposed axially with the first securing member and second securing member relative to the connecting post; the third securing member is configured to penetrate through the base body to fixedly connect the metal plate.

5. The output electrode base in accordance with claim 1 , wherein the output electrode base is provided with at least two connectors.

6. The output electrode base in accordance with claim 1 , wherein one end of the connecting post extends into the base body; and

a portion of the connecting post located in the base body is connected with the securing member.

7. The output electrode base in accordance with claim 1 , wherein the connector comprises a flange bolt and a washer-nut, and the washer-nut is screwed to a threaded rod of the flange bolt; and

a head of the flange bolt, a flange of the flange bolt and the washer-nut form the securing member, and a portion of the threaded rod of the flange bolt forms the connecting post.

8. A battery module, comprising:

an end plate, being located at an output end of the battery module;

an output electrode connection piece, being provided with a first installing hole;

an output electrode base, being secured to the end plate;

wherein the output electrode base comprises a base body and a connector;

wherein the connector comprises a securing member and a connecting post, the securing member is secured in the base body, and the connecting post protrudes from the base body; and

wherein the connecting post is configured to penetrate through a first installing hole of an output electrode connection piece of the battery module and connect with the output electrode connection piece of the battery module to realize connection between the output electrode connection piece and the base body.

9. The battery module in accordance with claim 8 , wherein the connector further comprises a metal plate above the base body, and the metal plate is configured to abut against the output electrode connection piece; the connecting post of the connector is a metal structure.

10. The battery module in accordance with claim 8 , wherein the securing member comprises a first securing member and a second securing member;

the first securing member and the second securing member are disposed axially relative to the connecting post, wherein the second securing member is configured to contact with the base body radially and axially, and a radial size of the second securing member is greater than a radial size of the first securing member.

11. The battery module in accordance with claim 8 , wherein the output electrode base is provided with at least two connectors.

12. The battery module in accordance with claim 8 , wherein one end of the connecting post extends into the base body; and

a portion of the connecting post located in the base body is connected with the securing member.

13. The battery module in accordance with claim 8 , wherein the connector comprises a flange bolt and a washer-nut, and the washer-nut is screwed to a threaded rod of the flange bolt; and

a head of the flange bolt, a flange of the flange bolt and the washer-nut form the securing member, and a portion of the threaded rod of the flange bolt forms the connecting post.

14. A battery pack, comprising a casing and a plurality of battery modules; wherein

each battery module comprises

an end plate, being located at an output end of the battery module;

an output electrode connection piece, being provided with a first installing hole;

an output electrode base, being secured to the end plate;

wherein the output electrode base comprises a base body and a connector;

wherein the connector comprises a securing member and a connecting post, the securing member is secured in the base body, and the connecting post protrudes from the base body; and

wherein the connecting post is configured to penetrate through a first installing hole of an output electrode connection piece of the battery module and connect with the output electrode connection piece of the battery module to realize connection between the output electrode connection piece and the base body;

the battery modules are connected through a module connection piece; and

the module connection piece is provided with a second installing hole, and the connecting post is configured to connect the module connection piece with the output electrode connection piece through the second installing hole.

15. The battery pack in accordance with claim 14 , wherein the connecting post comprises a threaded rod, and the connecting post is configured to screw with a nut;

the nut is configured to abut against the module connection piece.

16. The battery pack in accordance with claim 14 , wherein the connector further comprises a metal plate above the base body, and the metal plate is configured to abut against the output electrode connection piece; the connecting post of the connector is a metal structure.

17. The battery pack in accordance with claim 14 , wherein the securing member comprises a first securing member and a second securing member;

the first securing member and the second securing member are disposed axially relative to the connecting post, wherein the second securing member is configured to contact with the base body radially and axially, and a radial size of the second securing member is greater than a radial size of the first securing member.

18. The battery pack in accordance with claim 14 , wherein the output electrode base is provided with at least two connectors.

19. The battery pack in accordance with claim 14 , wherein one end of the connecting post extends into the base body; and

a portion of the connecting post located in the base body is connected with the securing member.

20. The battery pack in accordance with claim 14 , wherein the connector comprises a flange bolt and a washer-nut, and the washer-nut is screwed to a threaded rod of the flange bolt; and

a head of the flange bolt, a flange of the flange bolt and the washer-nut form the securing member, and a portion of the threaded rod of the flange bolt forms the connecting post.