Thermal management systems for battery pack
    22.
    发明授权
    Thermal management systems for battery pack 有权
    电池组热管理系统

    公开(公告)号:US07733054B2

    公开(公告)日:2010-06-08

    申请号:US11551424

    申请日:2006-11-13

    IPC分类号: H02J7/00 H02J7/04

    摘要: In a cordless power tool system, high temperature gases created in a battery pack by the battery cells during a charging or discharging operation can be routed into a housing of one of an attached power tool or charger to reduce the temperature of the gases, prior to venting the gases externally. In an example, a battery pack has at least one vent hole for relieving pressure and a movable device covering the vent hole and configured to expose the vent hole upon a pressure set-point within the pack housing being exceeded. In another example, the pack housing includes a thin-walled section designed to break if pressure within the pack housing exceeds a given pressure setpoint. In a further example, the pack housing includes a baffle having an S-shaped cross-section for providing a vent path for gases and for preventing external fluids from entering the pack housing.

    摘要翻译: 在无绳电动工具系统中,在充电或放电操作期间由电池单元在电池组中产生的高温气体可以被引导到附接的电动工具或充电器之一的壳体中,以降低气体的温度,之前 从外部排出气体。 在一个示例中,电池组具有至少一个用于释放压力的通气孔和覆盖通气孔的可移动装置,并且构造成在超过包装壳体内的压力设定点时露出通气孔。 在另一示例中,包装壳体包括薄壁部分,其设计成如果包装壳体内的压力超过给定的压力设定点则破裂。 在另一实例中,包装壳体包括具有S形横截面的挡板,用于提供用于气体的排放路径并防止外部流体进入包装壳体。

    Cell monitoring and balancing
    23.
    发明授权
    Cell monitoring and balancing 有权
    细胞监测和平衡

    公开(公告)号:US08274261B2

    公开(公告)日:2012-09-25

    申请号:US12170718

    申请日:2008-07-10

    IPC分类号: H02J7/00 G01N27/416

    摘要: A method for monitoring the voltage of each of a plurality of cells of a battery pack is provided. The method may include monitoring a voltage potential for each of a plurality of cells in a battery pack utilizing a single channel of battery control unit within the battery pack. If, during discharge of the battery, e.g., the battery is being used to power a hand tool, the voltage potential of any cell is determined by the battery control unit to be below a predetermined minimum voltage, the battery control unit discontinues a current flow from battery pack to the tool. Additionally, during charging of the battery pack, if a voltage differential between any one of the cells and any other one of the cells is determined to be above a predetermined maximum differential, the battery control unit reduces the voltage potential stored in the cell having the higher voltage potential.

    摘要翻译: 提供了一种用于监视电池组的多个电池单元的电压的方法。 该方法可以包括使用电池组内的电池控制单元的单通道来监视电池组中的多个电池单元的电压电位。 如果在电池放电期间,例如,电池正在用于为手动工具供电,则电池控制单元确定任何电池的电压电位低于预定的最小电压,电池控制单元中断电流 从电池组到工具。 另外,在电池组的充电期间,如果确定电池中的任何一个电池和任何其他电池之间的电压差高于预定的最大值,则电池控制单元降低存储在具有 较高的电压电位。

    CELL MONITORING AND BALANCING
    24.
    发明申请
    CELL MONITORING AND BALANCING 有权
    细胞监测和平衡

    公开(公告)号:US20090015206A1

    公开(公告)日:2009-01-15

    申请号:US12170718

    申请日:2008-07-10

    IPC分类号: H02J7/00

    摘要: A method for monitoring the voltage of each of a plurality of cells of a battery pack is provided. The method may include monitoring a voltage potential for each of a plurality of cells in a battery pack utilizing a single channel of battery control unit within the battery pack. If, during discharge of the battery, e.g., the battery is being used to power a hand tool, the voltage potential of any cell is determined by the battery control unit to be below a predetermined minimum voltage, the battery control unit discontinues a current flow from battery pack to the tool. Additionally, during charging of the battery pack, if a voltage differential between any one of the cells and any other one of the cells is determined to be above a predetermined maximum differential, the battery control unit reduces the voltage potential stored in the cell having the higher voltage potential.

    摘要翻译: 提供了一种用于监视电池组的多个电池单元的电压的方法。 该方法可以包括使用电池组内的电池控制单元的单通道来监视电池组中的多个电池单元的电压电位。 如果在电池放电期间,例如,电池正在用于为手动工具供电,则电池控制单元确定任何电池的电压电位低于预定的最小电压,电池控制单元中断电流 从电池组到工具。 另外,在电池组的充电期间,如果确定电池中的任何一个电池和任何其他电池之间的电压差高于预定的最大值,则电池控制单元降低存储在具有 较高的电压电位。

    Rechargeable battery pack and operating system
    25.
    发明授权
    Rechargeable battery pack and operating system 有权
    充电电池组和操作系统

    公开(公告)号:US07941865B2

    公开(公告)日:2011-05-10

    申请号:US11554937

    申请日:2006-11-20

    摘要: A method and system for authenticating a smart battery having a smart battery and an electronic device. Both the device and the smart battery generate encrypted random strings using key material based by A/D noise bits as a seed value. A pseudo random number is generated from the A/D noise that is transmitted to both the electronic device and the smart battery. The pseudo random number is used by both devices as a key index to select one of a plurality of keys stored in separate key libraries. The keys, or key material, is used to execute an encryption algorithm. The two encryption data streams are then compared to authenticate the smart battery.

    摘要翻译: 一种用于认证具有智能电池和电子设备的智能电池的方法和系统。 设备和智能电池都使用基于A / D噪声比特的密钥材料作为种子值来生成加密的随机字符串。 从发送到电子设备和智能电池的A / D噪声产生伪随机数。 伪随机数被两个设备用作密钥索引,以选择存储在单独的密钥库中的多个密钥中的一个。 密钥或密钥材料用于执行加密算法。 然后将两个加密数据流进行比较以认证智能电池。