Single wire battery pack temperature and identification method

A technology for battery packs and batteries, applied in passive battery identification, thermometers, secondary batteries, etc., can solve the problems of increasing battery cost, complexity, and size, and achieve the effect of unaffected accuracy and elimination of pins

Active Publication Date: 2013-09-04
DURACELL U S OPERATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of Smart Battery standards, such as the SMBus standard, circuitry and at least two additional connector pins are requir

Method used

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  • Single wire battery pack temperature and identification method
  • Single wire battery pack temperature and identification method
  • Single wire battery pack temperature and identification method

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specific Embodiment approach

[0027] This invention describes a technique for inexpensively differentiating battery chemistries / pack types on a universal charger hierarchy and monitoring battery pack temperature over a single shared electrical connection. Such chargers are configured to determine, apply and control the charging current used to charge the rechargeable battery without prior knowledge of the battery type and / or capacity. The charger is not limited to, but is particularly suitable for charging battery cells of various sizes, including those used in many modern portable consumer electronics, such as cellular phones, MP3 players, and digital cameras. The disclosed chargers are applicable to many different rechargeable battery types, including lithium-ion batteries with high-speed charging capabilities, such as those employing lithium iron phosphate or similar phosphate-based intercalation compounds as one of the battery electrodes , and lithium-ion batteries, and also includes lead-acid, nickel ...

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Abstract

Disclosed are techniques for identifying battery pack types and by inference battery chemistries by measuring a transient response of the battery pack to signal applied to the battery pack.

Description

Background technique [0001] Conventional chargers rely on electrical, mechanical or digital signal technology to determine the type of battery being charged, and thus determine the appropriate charging scheme to apply. For example, some techniques are based on the use of an internal battery ID resistor, the value of which determines the charging parameters used for that particular battery. Mechanical techniques have also been used, such as using the position of the connector polarity key or the position of specific pins to distinguish between different battery models that require different charging parameters. For example, the Smart Battery SMBus standard uses a serial data communication interface to communicate charging parameters to a charging device. The above approach requires either an additional connection point beyond the battery power terminals or some additional mechanical structure that is not required for the basic battery function of delivering stored energy to th...

Claims

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Application Information

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IPC IPC(8): H01M10/44H01M10/48G01R31/36H02J7/00
CPCG01K13/00H01M10/443H01M10/446H01M10/486H01M10/0525G01R31/378H01M10/425H02J7/00041H02J7/00047Y02E60/10H02J7/04H02J7/007182H02J7/007194
Inventor E·德沃尔金T·P·加贾
Owner DURACELL U S OPERATIONS
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