| CPC H01M 50/503 (2021.01) [H01M 50/209 (2021.01); H01M 50/258 (2021.01); H01M 50/507 (2021.01); H01M 50/516 (2021.01)] | 20 Claims |
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1. A connecting structure applicable to a battery module comprising at least two battery cells, wherein the connecting structure comprises:
connecting assemblies, wherein each of the connecting assemblies comprises a first connecting member and a second connecting member, wherein the first connecting member comprises a first bending portion, a first connecting portion, and a second connecting portion opposite the first connecting portion, one end of the first connecting portion is connected to one end of the second connecting portion via the first bending portion, and the first connecting portion, the first bending portion, and the second connecting portion surround a space to define an inserting groove; the second connecting member is mounted in the inserting groove and resiliently abuts against the first connecting portion and the second connecting portion; the second connecting member comprises a bridging portion, a first plate, and a second plate opposite the first plate, two ends of the bridging portion are respectively connected to the first plate and the second plate, and the bridging portion, the first plate, and the second plate surround a space to define an accommodating cavity; each of the first plate and the second plate is provided with a resilient portion, the resilient portion has a first sub-section protruding towards the accommodating cavity, and the first sub-section of the first plate and the first sub-section of the second plate cooperatively define a first gap extending in a thickness direction of the second connecting member; the first connecting portion defines a first positioning hole, the first plate comprises a first end, the first end has a first positioning portion, the first positioning portion is bent relative to the first plate in a direction in which the first positioning portion faces away from the second plate, and the first positioning portion is inserted into the first positioning hole; the first positioning portion is bent at a first angle relative to the first plate in the direction in which the first positioning portion faces away from the second plate, and the first angle is greater than or equal to 45 degrees and less than 80 degrees; the second connecting portion defines a third positioning hole that is opposite to the first positioning hole in a thickness direction of the first connecting member, the second plate comprises a third end opposite the first end, and the third end and the first end cooperatively define the opening of the accommodating cavity, wherein the third end has a third positioning portion, and the third positioning portion is bent relative to the second plate in a direction in which the third positioning portion faces away from the accommodating cavity, and the third positioning portion is inserted into the third positioning hole; and each first connecting portion is electrically connected to one of the at least two battery cells; and
a conducting member mounted in the accommodating cavities of two adjacent second connecting members, wherein one end of the conducting member in a height direction of the conducting member abuts against the bridging portion, a first width D1 of the first gap is less than a first thickness H1 of the conducting member, and two opposite sides of the conducting member in a thickness direction of the conducting member resiliently abut against the first sub-section of the first plate and the first sub-section of the second plate, respectively; and the conducting member has a protrusion portion and two insertion portions, wherein the protrusion portion is between and protrudes relative to the two insertion portions, the two insertion portions are mounted in the accommodating cavities of the two adjacent second connecting members, respectively, the conductive member is mounted in the accommodating cavities, the protrusion portion is disposed between two adjacent first connecting members and protrudes in a direction away from the first connecting portion;
wherein the resilient portion further has a second sub-section that is recessed relative to the first sub-section in a direction in which the second sub-section faces away from the accommodating cavity, the accommodating cavity has an opening, and the second sub-section is located between the first sub-section and the opening in a height direction of the second connecting member; the second sub-section of the first plate and the second sub-section of the second plate cooperatively define a second gap in the thickness direction of the second connecting member, a second width D2 of the second gap satisfies 1.3*D1≤D2≤1.5*D1, and the second width D2 of the second gap is greater than the first width D1 of the first gap; a second thickness H2 of the first plate is equal to a second thickness H2 of the second plate, and a third width D3 of the inserting groove satisfies D2+2.3*H2≤D3≤D2+2.5*H2 in a thickness direction of the first connecting member; a third thickness H3 of the first connecting portion is equal to a third thickness H3 of the second connecting portion, and the third thickness H3 satisfies 2.0*H2≤H3≤2.5*H2; the first connecting portion further defines a first fixing hole that is located at one side of the first positioning hole away from the first bending portion, the second connecting portion defines a second fixing hole, and the first fixing hole is opposite to the second fixing hole in a thickness direction of the first connecting member; and the connecting structure further comprises a fastener, the fastener extends through the second fixing hole and the first fixing hole in sequence to secure the first connecting portion to the second connecting portion, and the second connecting member is located between the first bending portion and the fastener in a height direction of the first connecting member.
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