Bus bar with safety against fire
A bus bar, which includes a metal bar made of an electrically conductive metal material; a bandage member configured to surround the metal bar except for both ends of the metal bar; and an insulating tube configured to surround the metal bar and the bandage member together, wherein the bandage member is made of a metal wire having a surface coated with a coating material having insulation and fire resistance.
1. A bus bar, comprising:
a metal bar made of an electrically conductive metal material;
a bandage member comprising one or more metal wires wrapped around the metal bar except for both ends of the metal bar, wherein a surface of the one or more metal wires is coated with an insulative and fire resistant coating material, and wherein the one or more metal wires are arranged such that the metal bar remains partially exposed along a plurality of longitudinal gaps between portions of the one or more metal wires; and
an insulating tube fully surrounding the metal bar and the bandage member together.
2. The bus bar according to claim 1 ,
wherein the coating material is any one material selected from mica, silica and ceramic.
3. The bus bar according to claim 1 ,
wherein the one or more metal wires is a plurality of annular metal bands.
4. The bus bar according to claim 3 ,
wherein the plurality of annular metal bands are arranged at regular intervals along a longitudinal direction of the metal bar, and wherein a distance of each of the plurality of longitudinal gaps is defined by the regular intervals.
5. The bus bar according to claim 3 ,
wherein the plurality of annular metal bands are compressively fixed to the metal bar around a perimeter of the metal bar.
6. The bus bar according to claim 1 , further comprising
a fire-resistive tape attached to a surface of the metal bar, wherein the bandage member surrounds the fire-resistive tape.
7. The bus bar according to claim 1 ,
wherein the one or more metal wires includes a metal wire wound around a perimeter of the metal bar in a helical structure extending along a longitudinal direction of the metal bar, wherein each of the plurality of longitudinal gaps is a space between windings of the metal wire.
8. The bus bar according to claim 1 ,
wherein the insulating tube is a transparent silicon material.
9. The bus bar according to claim 1 ,
wherein the metal bar comprises a plurality of stacked metal plates, each metal plate having a thickness of 0.1 to 0.3 mm.
10. A battery pack, comprising the bus bar according to claim 1 .