Battery connection module

1. A battery connection module adapted to connect a plurality of batteries, the battery connection module comprising:

a plurality of busbars used to connect a plurality of batteries in series; and

a single layer wiring flexible circuit board having multiple front end connector connecting points positioned at a front end portion thereof, first and second rounded traces, and first and second rounding traces,

a front end of each rounded trace being respectively connected to one of the front end connector connecting points, each rounded trace having a rear end connecting point electrically and mechanically connected to a respective one of the busbars, each rear end connecting point having a front side facing the front end portion, a rear side opposite the front side, and inner and outer sides extending between the front and rear sides,

a front end of each rounding trace being connected to other ones of the front end connector connecting points, the first trace extending completely past at least three of the sides of the rear end connecting point of the first rounded trace, and the second rounding trace extending completely past at least three of the sides of the rear end connecting point of the second rounded trace.

2. The battery connection module of claim 1 , wherein the single layer wiring flexible circuit board further has a lateral extension support arm integrally constructed thereon, wherein the rear end connecting point of the first rounded trace is provided on the lateral extension support arm, the first rounding trace extends onto the lateral extension support arm so as to extend completely past the least three of the sides of the rear end connecting point of the first rounded trace.

3. The battery connection module of claim 2 , wherein the rear end connecting points of the corresponding rounded traces and the plurality of busbars are respectively connected by electrically conductive pieces, wherein the respective rounding trace does not contact the respective electrically conductive piece.

4. The battery connection module of claim 3 , wherein each electrically conductive piece has an arching portion arching upwardly, the respective rounding trace passes below the respective arching portion.

5. The battery connection module of claim 1 , wherein a bridge-type extension piece is integrally constructed on the single layer wiring flexible circuit board and has two ends thereof connected to the single layer wiring flexible circuit board to form a hollow region in which the rear end connecting point of the first rounded trace is provided, the first rounding trace extending along the bridge-type extension piece to extend completely past the at least three of the sides of the rear end connecting point of the first rounded trace.

6. The battery connection module of claim 5 , wherein the bridge-type extension piece is folded at the two ends to cover the single layer wiring flexible circuit board.

7. The battery connection module of claim 6 , wherein the single layer wiring flexible circuit board further has lateral extension support arm integrally constructed thereon, wherein the rear end connecting point of the first rounded trace is provided on the lateral extension support arm.

8. The battery connection module of claim 1 , wherein at least one of the rounding traces is coupled to a temperature sensor.

9. The battery connection module of claim 1 , wherein the battery connection module further comprises a carrying tray on which the single layer wiring flexible circuit board and the plurality of busbars are mounted.

10. The battery connection module of claim 2 , wherein the lateral extension support arm extends outward from a linear edge of the single layer wiring flexible circuit board.

11. The battery connection module of claim 1 , wherein a third rounded trace has a front end connected to a third one of the front end connector connecting points, the third rounded trace having a third rear end connecting point electrically and mechanically connected to a third one of the busbars, the third rear end connecting point having a front side facing the front end portion, a rear side opposite the front side, and inner and outer sides extending between the front and rear sides, wherein the first rounding trace further extends completely past at least three of the sides of the third rear end connecting point of the first rounded trace.

12. The battery connection module of claim 11 , wherein the single layer wiring flexible circuit board further has a second lateral extension support arm, wherein the third rear end connecting point is provided on the second lateral extension support arm, the first rounding trace further extends onto the second lateral extension support arm so as to extend completely past the least three of the sides of the third rear end connecting point of the third rounded trace.

13. The battery connection module of claim 12 , wherein the third rear end connecting point of the third rounded trace and the third busbar are connected by a third electrically conductive piece, wherein the first rounding trace does not contact the third electrically conductive piece.

14. The battery connection module of claim 13 , wherein the third electrically conductive piece has a third arching portion arching upwardly, the first rounding trace passes below the third arching portion.

15. The battery connection module of claim 11 , wherein a bridge-type extension piece is integrally constructed on the single layer wiring flexible circuit board and has two ends thereof connected to the single layer wiring flexible circuit board to form a hollow region in which the rear end connecting points of the first and third rounded traces are provided, the first rounding trace extending along the bridge-type extension piece to extend completely past the at least three of the sides of the rear end connecting points of the first and third rounded traces.

16. The battery connection module of claim 15 , wherein the bridge-type extension piece is folded at the two ends to cover the single layer wiring flexible circuit board.

17. The battery connection module of claim 16 , wherein the single layer wiring flexible circuit board further has first and second lateral extension support arms integrally constructed thereon, wherein the rear end connecting point is provided on the first lateral extension support arm and the third rear end connecting point is provided on the second lateral extension support arm.

18. The battery connection module of claim 17 , wherein the first and second lateral extension support arms extend outward from an edge of the single layer wiring flexible circuit board.

19. The battery connection module of claim 17 , wherein the first lateral extension support arm extend outward from a first edge of the single layer wiring flexible circuit board, and the second lateral extension support arm extends outward from a second different edge of the single layer wiring flexible circuit board.

20. The battery connection module of claim 11 , wherein the battery connection module further comprises a carrying tray on which the single layer wiring flexible circuit board and the plurality of busbars are mounted.