Circuit board and battery connection module

Abstract

A circuit board and a battery connection module are provided. The circuit board has an insulating substrate and a plurality of circuit traces provided thereto. At least one of the traces is provided with a fuse unit. The fuse unit has a main fuse and at least one spare fuse. The main fuse has two main trace connection end portions respectively positioned at two ends of the main fuse and connected to the trace and a main fuse section connected between the two main trace connection end portions. The spare fuse has two trace connection end portions respectively positioned at two ends of the spare fuse and a fuse section connected between the two trace connection end portions, the fuse section and the main fuse section are spaced apart from each other and arranged side by side, and at least one of the two trace connection end portions is not connected with the trace so as to form an electrical disconnection with the trace, and after the main fuse section forms an electrical disconnection, the two trace connection end portions are connected to the trace so that a current conductive path is formed by the spare fuse and the trace.

What is claimed is: 
     
         1 . A circuit board, comprising:
 an insulating substrate; and   a plurality of circuit traces provided to the insulating substrate, at least one of the circuit traces being provided with a fuse unit, the fuse unit comprising a main fuse and at least one spare fuse, the main fuse having two main trace connection end portions respectively positioned at two ends of the main fuse and connected to the circuit trace and a main fuse section connected between the two main trace connection end portions, the spare fuse having two trace connection end portions respectively positioned at two ends of the spare fuse and a fuse section connected between the two trace connection end portions, the fuse section and the main fuse section being spaced apart from each other and arranged side by side, and at least one of the two trace connection end portions being not connected with the circuit trace so as to form an electrical disconnection with the circuit trace, and after the main fuse section forms an electrical disconnection, the two trace connection end portions being connected to the circuit trace so that a current conductive path is formed by the spare fuse and the circuit trace.   
     
     
         2 . The circuit board of  claim 1 , wherein one of the trace connection end portions of the spare fuse is connected with one of the main trace connection end portions of the main fuse, and the other trace connection end portion is adjacent to, spaced apart from and thus is not connected with the other main trace connection end portion, after the main fuse section forms the electrical disconnection, the other trace connection end portion and the other the main trace connection end portion which are adjacent to and spaced apart from each other are connected so that the current conductive path is formed by the spare fuse and the circuit trace. 
     
     
         3 . The circuit board of  claim 2 , wherein the other trace connection end portion and the other main trace connection end portion which adjacent to and spaced apart from each other each have an enlarged soldering pad area. 
     
     
         4 . The circuit board of  claim 1 , wherein
 the fuse unit comprises a plurality of spare fuses, and two of the plurality of spare fuses are defined as a first spare fuse and a second spare fuse,   the first spare fuse has two first trace connection end portions respectively positioned at two ends of the first spare fuse and a first fuse section connected between the two first trace connection end portions, the first fuse section and the main fuse section are spaced apart form each other and arranged side by side, the two first trace connection end portions are respectively adjacent to the two main trace connection end portions, and one of the first trace connection end portions and one of the main trace connection end portions which are adjacent to each other are connected, the other first trace connection end portion and the other the main trace connection end portion which are adjacent to each other are spaced apart from each other and are not connected with each other so that the other first trace connection end portion forms an electrical disconnection with the circuit trace,   the second spare fuse has two second trace connection end portions respectively positioned at two ends of the second spare fuse and a second fuse section connected between the two second trace connection end portions, the second fuse section and the first fuse section are respectively positioned at two sides of the main fuse section, spaced apart from the main fuse section and arranged side by side with the main fuse section, the two second trace connection end portions are respectively adjacent to the two main trace connection end portions, and one of the second trace connection end portions and one of the main trace connection end portion which are adjacent to each other are connected, and the other second trace connection end portion and the other the main trace connection end portion which are adjacent to each other are spaced from each other so that the other second trace connection end portion forms an electrical disconnection with the circuit trace.   
     
     
         5 . The circuit board of  claim 4 , wherein one of the two main trace connection end portions is connected with the first spare fuse and spaced apart from the second spare fuse, and the other two main trace connection end portion is connected with the second spare fuse and spaced apart from the first spare fuse. 
     
     
         6 . The circuit board of  claim 1 , wherein the fuse section and the main fuse section of the fuse unit are fusing type. 
     
     
         7 . The circuit board of  claim 1 , wherein the insulating substrate is a flexible material. 
     
     
         8 . A battery connection module used to connect a plurality of batteries arranged side by side, the battery connection module comprising:
 an insulating frame used to be provided on the plurality of batteries;   a plurality of busbars provided to the insulating frame, each busbar being used to electrically connect electrodes of at least two adjacent batteries;   a circuit board comprising an insulating substrate and a plurality of circuit traces provided to the insulating substrate; and   a plurality of conductive connecting tabs, two ends of each conductive connecting tab being respectively connected with the circuit board and one of the busbars, and each conductive connecting tab being connected with one of the circuit traces;   the plurality of circuit traces respectively electrically connected to the plurality of conductive connecting tabs each being provided with a fuse unit, the fuse unit comprising a main fuse and at least one spare fuse, the main fuse having two main trace connection end portions respectively positioned at two ends of the main fuse and connected to the corresponding circuit trace and a main fuse section connected between the two main trace connection end portions, the spare fuse having two trace connection end portions respectively positioned at two ends of the spare fuse and a fuse section connected between the two trace connection end portions, the fuse section and the main fuse section being spaced apart from each other and arranged side by side, and at least one of the two trace connection end portions being not connected with the corresponding circuit trace so as to form an electrical disconnection with the corresponding circuit trace, and after the main fuse section forms an electrical disconnection, the two trace connection end portions being connected to the corresponding circuit trace so that a current conductive path is formed by the spare fuse and the corresponding circuit trace.   
     
     
         9 . The battery connection module of  claim 8 , wherein one of the trace connection end portions of the spare fuse is connected with one of the main trace connection end portions of the main fuse, and the other trace connection end portion is adjacent to, spaced apart from and thus is not connected with the other main trace connection end portion, after the main fuse section forms the electrical disconnection, the other trace connection end portion and the other the main trace connection end portion which are adjacent to and spaced apart from each other are connected so that the current conductive path is formed by the spare fuse and the corresponding circuit trace. 
     
     
         10 . The battery connection module of  claim 9 , wherein the other trace connection end portion and the other main trace connection end portion which adjacent to and spaced apart from each other each have an enlarged soldering pad area. 
     
     
         11 . The battery connection module of  claim 8 , wherein
 the fuse unit comprises a plurality of spare fuses, and two of the plurality of spare fuses are defined as a first spare fuse and a second spare fuse,   the first spare fuse has two first trace connection end portions respectively positioned at two ends of the first spare fuse and a first fuse section connected between the two first trace connection end portions, the first fuse section and the main fuse section are spaced apart from each other and arranged side by side, the two first trace connection end portions are respectively adjacent to the two main trace connection end portions, and one of the first trace connection end portions and one of the main trace connection end portions which are adjacent to each other are connected, the other first trace connection end portion and the other the main trace connection end portion which are adjacent to each other are spaced apart from each other and are not connected with each other so that the other first trace connection end portion forms an electrical disconnection with the corresponding circuit trace,   the second spare fuse has two second trace connection end portions respectively positioned at two ends of the second spare fuse and a second fuse section connected between the two second trace connection end portions, the second fuse section and the first fuse section are respectively positioned at two sides of the main fuse section, spaced apart from the main fuse section and arranged side by side with the main fuse section, the two second trace connection end portions are respectively adjacent to the two main trace connection end portions, and one of the second trace connection end portions and one of the main trace connection end portion which are adjacent to each other are connected, and the other second trace connection end portion and the other the main trace connection end portion which are adjacent to each other are spaced from each other so that the other second trace connection end portion forms an electrical disconnection with the corresponding circuit trace.   
     
     
         12 . The battery connection module of  claim 11 , wherein one of the two main trace connection end portions is connected with the first spare fuse and spaced apart from the second spare fuse, and the other two main trace connection end portion is connected with the second spare fuse and spaced apart from the first spare fuse. 
     
     
         13 . The battery connection module of  claim 8 , wherein the fuse section and the main fuse section of the fuse unit are fusing type. 
     
     
         14 . The battery connection module of  claim 8 , wherein the insulating substrate is a flexible material. 
     
     
         15 . The battery connection module of  claim 14 , wherein the battery connection module further comprises a plurality of auxiliary connecting tabs, two ends of each auxiliary connecting tab are respectively connected with the circuit board and one of the busbars and each auxiliary connecting tab is not connected with any one of the plurality of circuit traces. 
     
     
         16 . A battery connection module used to connect a plurality of batteries arranged side by side, the battery connection module comprising:
 an insulating frame used to be provided on the plurality of batteries;   a plurality of busbars provided to the insulating frame, each busbar being used to electrically connect electrodes of at least two adjacent batteries;   a circuit board comprising an insulating substrate and a plurality of circuit traces provided to the insulating substrate;   a plurality of conductive connecting tabs, two ends of each conductive connecting tab being respectively connected with the circuit board and one of the busbars, and each conductive connecting tab being connected to one of circuit traces; and   a plurality of auxiliary connecting tabs, two ends of each auxiliary connecting tab being respectively connected with the circuit board and one of the busbars, and each auxiliary connecting tab being not connected with any one of the plurality of circuit traces.   
     
     
         17 . The battery connection module of  claim 16 , wherein the plurality of circuit traces respectively electrically connected to the plurality of conductive connecting tabs each are provided with a fuse unit, the fuse unit comprises a main fuse and at least one spare fuse, the main fuse has two main trace connection end portions respectively positioned at two ends of the main fuse and connected to the corresponding circuit trace and a main fuse section connected between the two main trace connection end portions, the spare fuse has two trace connection end portions respectively positioned at two ends of the spare fuse and a fuse section connected between the two trace connection end portions, the fuse section and the main fuse section are spaced apart from each other and arranged side by side, and at least one of the two trace connection end portions is not connected with the corresponding circuit trace so as to form an electrical disconnection with the corresponding circuit trace, and after the main fuse section forms an electrical disconnection, the two trace connection end portions are connected to the corresponding circuit trace so that a current conductive path is formed by the spare fuse and the corresponding circuit trace. 
     
     
         18 . The battery connection module of  claim 16 , wherein the insulating frame has a body and a plurality of positioning posts protruding from the body, the insulating substrate of the circuit board has a plurality of positioning holes correspondingly accommodating the plurality of positioning posts, so that the circuit board and the insulating frame are positioned relative to each other. 
     
     
         19 . The battery connection module of  claim 18 , wherein the insulating substrate is a flexible material, and the circuit board further comprises a plurality of strengthening tabs provided to the insulating substrate and each strengthening tab correspondingly extends across at least one of the positioning holes in position, and a through hole is formed at a position of each strengthening tab corresponding to the positioning hole to allow the corresponding positioning post to pass through. 
     
     
         20 . The battery connection module of  claim 16 , wherein a part of the plurality of busbars each have at least two electrode connecting portions and at least one buffer portion, and one buffer portion is connected between every two adjacent electrode connecting portions, and the at least two electrode connecting portions and the at least one buffer portion are an integral structure. 
     
     
         21 . The battery connection module of  claim 16 , wherein a part of the plurality of busbars each have four electrode connecting portions and three buffer portions, and one buffer portion is connected between every two adjacent electrode connecting portions, and the four electrode connecting portions and the three buffer portions are an integral structure. 
     
     
         22 . The battery connection module of  claim 16 , wherein the plurality of busbars are used to connect the plurality of batteries in series, in which two busbars which are respectively positioned at two ends of the plurality of batteries connected in series are output electrode members, the battery connection module further comprises an extension connecting tab, the extension connecting tab has a first end and a second end which are positioned at two opposite ends of the extension connecting tab, the first end is connected to one of the output electrode member, the second end and the other output electrode member are positioned at the same side of the insulating frame. 
     
     
         23 . The battery connection module of  claim 16 , wherein the battery connection module further comprises a cover covered to the insulating frame to cover the plurality of busbars, the circuit board, the plurality of conductive connecting tabs and the plurality of auxiliary connecting tabs.