| CPC H02J 7/0042 (2013.01) | 16 Claims |

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1. A docking structure, comprising:
a first base and a second base connected to the first base;
a first electrode group arranged in parallel and combined on an insulating block; and
a second electrode group arranged in parallel with the first electrode group, wherein the second electrode group is used for bonding the first electrode group, the second electrode group is combined with the first base and has freedom in a first direction, and moves in the first direction by a first elastic structure; the first base is combined with the second base and has freedom in a second direction different from the first direction, wherein a second elastic structure is connected between the first base and the second base;
wherein a first plane of the first electrode group and a second plane of the second electrode group are kept in parallel surface contact during docking the first electrode group and the second electrode group.
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