摘要:
A battery pack (110) having a plurality of cells (103, 105) utilizes a pull up resistor (116) multiplexed between separate voltage supply sources (120, 122) and a single battery contact (106) to monitor individual cell temperatures. A plurality of thermistors (102, 104) are coupled in series between ground potential (108) and the single battery pack contact (106), each thermistor being coupled to one cell of the pack. Individual voltage divider circuits are formed for each thermistor (102, 104) as the pull up resistor (116) is multiplexed between the voltage supply sources (120, 122).
摘要:
A method (20 or 30) and system (40) for estimating a battery state of charge can include a memory (48) for storing at least one among an impedance value, a plurality of values for V drop 0-1, or a plurality of values for V drop 0-1 normalized for charge or discharge values providing a stored plurality of values. The system can include a processor (44) and can measure at least one among V drop C-0 providing a measured V drop C-0 value and V drop 0-1 for the providing a measured V drop 0-1 value. The processor can be programmed to perform the functions of dividing the V drop C-0 value by the impedance value to estimate a charging current at the battery or comparing the measured V drop 0-1 value with a value among the stored plurality of values to estimate the battery state of charge.
摘要翻译:用于估计电池充电状态的方法(20或30)和系统(40)可以包括用于存储阻抗值,用于V drop 0-1的多个值中的至少一个或多个 对于提供存储的多个值的充电或放电值进行归一化的V drop 0-1的值。 系统可以包括处理器(44),并且可以测量提供测量的V drop C-0值和V drop 0-1之间的V drop C-0中的至少一个,以提供测量的V drop0-1值。 处理器可以被编程为执行将V drop C- 0值除以阻抗值的功能,以估计电池的充电电流,或将测量的V drop 0-1值与存储的多个值中的值进行比较,以将 估计电池的充电状态。
摘要:
A communication device (102) has a loudspeaker (212) that includes a loudspeaker coil. The loudspeaker is used for playing audio signals and for detecting metal in the vicinity of the loudspeaker. To detect metal the communication device includes a pulse generation circuit (216) for generating pulses that are applied to the loudspeaker, and a pulse measurement circuit (222) for measuring response pulses. If the response pulses indicate metal is in proximity to the loudspeaker, an alert is generated to inform the user of the communication device.
摘要:
The invention concerns a method (300) and system (100) for operating a multiple charger. The method can include—in a multiple charger (110) having at least a first switch (134) and a second switch (122) for respectively controlling the flow of current to a first battery (116) and a second battery (118)—charging (312) the first battery by maintaining the first switch in a saturated state and charging (314) the second battery by maintaining the second switch in a saturated state. The first switch and the second switch can be simultaneously maintained (314) in the saturated state at least until the first battery reaches a predetermined charging threshold (412, 414).
摘要:
The invention concerns a method (300) and system (100) for selectively charging a battery (112). In one arrangement, the method can include the steps of coupling (311) the battery to a first power supply (114), coupling (311) the battery to a second power supply (116), determining (312) an available charging current parameter for the battery and selectively enabling (314) a charging circuit (120) for the first power supply and a charging circuit (122) for the second power supply based on the available charging current parameter of the battery. The selectively enabling process can be based on maximizing (316) an available charging current of the battery and minimizing (320) a power dissipation of the battery. As an example, the first power supply can be a hard-wired charger (114), and the second power supply can be a wireless charger (116).
摘要:
A method (20 or 30) and system (40) for estimating a battery state of charge can include a memory (48) for storing at least one among an impedance value, a plurality of values for V drop 0-1, or a plurality of values for V drop 0-1 normalized for charge or discharge values providing a stored plurality of values. The system can include a processor (44) and can measure at least one among V drop C-0 providing a measured V drop C-0 value and V drop 0-1 for the providing a measured V drop 0-1 value. The processor can be programmed to perform the functions of dividing the V drop C-0 value by the impedance value to estimate a charging current at the battery or comparing the measured V drop 0-1 value with a value among the stored plurality of values to estimate the battery state of charge.
摘要翻译:用于估计电池充电状态的方法(20或30)和系统(40)可以包括用于存储阻抗值,用于V drop 0-1的多个值中的至少一个或多个 对于提供存储的多个值的充电或放电值进行归一化的V drop 0-1的值。 系统可以包括处理器(44),并且可以测量提供测量的V drop C-0值和V drop 0-1之间的V drop C-0中的至少一个,以提供测量的V drop0-1值。 处理器可以被编程为执行将V drop C- 0值除以阻抗值的功能,以估计电池的充电电流,或将测量的V drop 0-1值与存储的多个值中的值进行比较,以将 估计电池的充电状态。
摘要:
A host device (500) is coupled to a peripheral device (104) which is initially not identified. To identify the peripheral device, the host device uses known information and information acquired from the peripheral device to determine the values of several electrical components (122) in the peripheral device. The host device applies different electrical conditions to the components by adjusting the state of I/O ports coupled to the peripheral device and measuring electrical conditions in response at other ports. Once sufficient information has been acquired, the measured values are used with known values of the system to calculate the values of the components in the peripheral device according to known electrical relationships.
摘要:
A communication device (11) is provided with a microprocessor (15) and a memory storage device (13). A battery (14) associated with the communication device 11 is provided with memory 16. The memory storage device and the memory contain values relevant to the manufacturing of each device, respectively. The microprocessor reads the memory storage device and the memory and makes a determination of whether the communication device, the battery, and the combination thereof are intrinsically safe to be used in a hazardous environment, and presents the results to a user.
摘要:
A charging technique (200) charges a battery pack (102) by taking into account the additional internal circuit impedance of the battery pack. An optimum pack voltage value for the battery pack is calculated (208) based on the rated internal cell voltage as well as the charge current and the internal battery pack circuitry impedance. The battery pack can now be charged such that the internal battery cell voltage is maintained at the rated voltage throughout the charging process. The optimum pack voltage is also updated (220) to account for variations in the battery pack circuitry impedance over temperature (216, 218) as well as variations in charge current (222, 224) during the charging process.
摘要:
A battery and charging system including a charger (200) that provides a current and a battery (107) having at least one cell (108) that can be charged by the current provided by the charger (200). The battery (107) includes a memory (110) that stores battery information and a coding resistor (111) indicative of battery type. A battery switching circuit (113, 114) coupled to the memory (110) and the coding resistor (111) switches the memory (110) into contact with the charger (200) when the charger (200) is capable of reading the memory (110). Otherwise, the battery switching circuit (113, 114) switches the coding resistor (111) into contact with the charger (200).