Current collecting board and power battery assembly using same

A power battery assembly (100), comprising,

• a number of single batteries (10) having a first end (11) and a second end (12) connected with connecting poles respectively, a number of printed circuit boards (20), a current collecting board (30), an anode electrode board (40), and a cathode electrode board (50);
• wherein the single batteries are arranged in a first half (101) and a second half (102);
• the first end (11) of the single battery (10) of the first half (101) is opposite to the first end (11) of the single battery (10) of the second half (102);
• the first half (101) comprises several first groups (1011), each first group (1011) is neighbor to another first group (1011);
• the first groups (1011) comprises a first front group (1012), a first rear group (1013), and many first middle groups (1014) positioned between the first front group (1012) and the first rear group (1013);
• the second half (102) comprises several second groups (1021), each second group (1021) is neighbor to another second group (1021) and each second group (1021) is at one side of a first group (1011);
• the second groups (1021) comprises a second front group (1022), a second rear group (1023), and many second middle groups (1024) positioned between the second front group (1022) and the second rear group (1023);
• wherein each printed circuit board (20) is positioned between two neighbored first middle groups (1014) and two neighbored second middle groups (1024), each connecting pole (13) of the first end (11) of the single battery (10) in the first front group (1012) is electrically connected to the anode electrode board (40), each connecting pole (13) of the second end (12) of the single battery (10) in the first front group (1012) is electrically connected a printed circuit board (20);
• each connecting pole (13) of the second end (12) of the single battery (10) in the second front group (1022) is electrically connected to the cathode electrode board (50), each connecting pole (13) of the first end (11) of the single battery (10) in the second front group (1022) is electrically connected the printed circuit board (20) which the first front group (1012) connected to;
• each connecting pole (13) of the second end (10) of the single battery (10) in the first rear group (1013) is electrically connected to the current collecting board (30), each connecting pole (13) of the first end (11) of the single battery (10) in the first rear group (1013) is electrically connected another printed circuit board (10);
• each connecting pole 13 of the first end (11) of the single battery (10) in the second rear group (1023) is electrically connected to the current collecting board (30), each connecting pole (13) of the second end (12) of the single battery (10) in the second rear group (1023) is electrically connected the another printed circuit board (20);
• wherein connecting poles (13) of each single battery in each first middle group (1014) are electrically connected to two printed circuit boards (20) and connected to connecting poles (13) of the single battery (10) of neighbored first middle groups (1014) in series;
• connecting poles of each single battery (10) in each second middle group (1024) are electrically connected to two printed circuit boards (20) and connected to connecting poles (13) of the single battery (10) of neighbored second middle groups (1024) in series;
• the anode electrode board (40) and the cathode electrode board (50) and are positioned at the same side of the power battery assembly (100), the current collecting board (30) is positioned opposite to the anode electrode board (40) and the cathode electrode board (50) and connects the first groups (1011) and the second groups (1021) in series;
• wherein current collecting board (30) comprises:
• a copper plate (301) comprising a top surface (3011) and a bottom surface (3012) and defining a number of first mounting holes (3013) and a number of first via holes (3015);
• a first adhesive layer (302) defining a number of second mounting holes (3021) and a number of second via holes (3023);
• a first copper foil (303) comprising a first main portion (3031), a number of contact portions (3035) and a number of fusing arms (3038), the first main portion (3031) defining a number of third via holes (3033) and a number of first isolate holes (3034);
• each first isolate hole (3034) surrounding a respective contact portion (3035) and each contact portion (3035) defining a third mounting hole (3036);
• each fusing arm (3038) connecting a respective first contact portion (3035) and the first main portion (3031);
• a first dielectric layer (304) defining a number of fourth mounting holes (3041) and a number of fourth via holes (3043);
• an epoxy resin layer (305) comprising a number of insulating members (3051), each insulating member (3051) being received in a respective first mounting hole (3013) and defining a fifth mounting hole (3053);
• a second adhesive layer (306) defining a number of six mounting holes (3061) and a number of fifth via holes (3063);
• a second copper foil (307) comprising a second main portion (3071) and a number of contact plates (3075), the second main portion (3071) defining a number of sixth via holes (3073) and a number of second isolate holes (3074);
• each contact plate (3075) being received in a respective second isolate hole (3074) and separated from the second main portion (3071) by the second adhesive layer (306), each contact plate (3075) defining a seventh mounting hole (3076);
• and
• a second dielectric layer (308) defining a number of eighth mounting holes (3081) and a number of seventh via holes (3083);
• wherein the first adhesive layer (302) is adhered to the top surface (3011), each second mounting hole (3021) corresponds to a respective first mounting hole (3013), each second via hole (3023) corresponds to a first via hole (3015);
• the first copper foil (303) is adhered to the first adhesive layer (302), each third mounting hole (3036) corresponds to the second mounting hole (3021), each third via hole (3033) corresponds to a second via hole (3023);
• the first dielectric layer (304) is coated on the first copper foil (303), each fourth mounting hole (3041) corresponds to the third mounting hole (3036), each fourth via hole (3043) corresponds to a third via hole (3033);
• each insulating member (3051) is received in a respective first mounting hole (3013), each fifth mounting hole (3053) and corresponds to a second mounting hole (3021);
• the second adhesive layer (306) is adhered to the bottom surface (3012), each sixth mounting hole (3061) corresponds to a fifth mounting hole (3053), each fifth via hole (3063) corresponds to a first via hole (3015);
• the second copper foil (307) is adhered to the second adhesive layer (306), each seventh mounting hole (3076) corresponds to the sixth mounting hole (3061), each sixth via hole (3073) correspond to a fifth via hole (3063);
• the second dielectric layer (308) is coated on the second copper foil (307), each eight mounting hole (3081) corresponds to the seventh mounting hole (3076), each seventh via hole (3083) corresponds to a sixth via hole (3073).