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    • 8. 发明授权
    • Battery pack for cordless device
    • 无绳设备电池组
    • US5620808A
    • 1997-04-15
    • US486666
    • 1995-06-07
    • Dale K. WheelerRobert G. Moores, Jr.Richard T. Walter
    • Dale K. WheelerRobert G. Moores, Jr.Richard T. Walter
    • B25F5/00B25F5/02H01M2/10H01M2/20H01M2/30H01M6/44
    • H01M2/1055H01M2/20H01M2/30H01M6/44
    • A battery pack 13 (FIG. 2) comprises an elongated cylindrical, metal casing 35, a plurality of cells 41, 43 in casing 35 and three coaxial pack terminals 46, 54, 61. For enhanced convenience, pack terminals 46, 54, 61 are electrically connectable in a cordless device 11 regardless of the angular orientation of the pack 13 about casing axis 33. To reduce cost and increase durability, pack 13 has no welded connections and will permit high current discharge rates. Cells 41, 43 are electrically connected but are mechanically disconnected. A spring 73 engages cell 41 and biases cells 41, 43 tightly together in compression to form good, low resistance electrical contact between cells 41, 43, casing base cap 45 and top 53. To provide a pack with two output voltages, the third pack terminal 61 has a polarity (relative to first pack terminal 46) the same as second pack terminal 54 and is electrically connected to the cell can terminal 43b of forward cell 43, thereby electrically by-passing cell 43.
    • 电池组13(图2)包括细长的圆柱形金属壳体35,壳体35中的多个电池单元41,43和三个同轴电缆组件端子46,54,61。为了增强便利性,电池组端子46,54,61 无论组件13围绕套管轴线33的角度方向如何,都可以在无绳装置11中电连接。为了降低成本并增加耐用性,包装13没有焊接连接并且将允许高电流放电速率。 电池41,43电连接但是机械地断开。 弹簧73接合电池单元41并将电池单元41,43紧压在一起压缩,以在电池单元41,43,套管基座盖45和顶部53之间形成良好的低电阻电接触。为了提供具有两个输出电压的组件,第三组件 端子61具有与第二封装端子54相同的极性(相对于第一封装端子46),并且电连接到正电池43的电池罐端子43b,从而电旁路电池43。