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Method, system and circuit for battery monitoring using redundant adjacent measurements

A technology of battery monitoring and battery voltage, which is applied in the direction of using digital measurement technology to measure, measure current/voltage, measure electricity, etc., and can solve the problem that the battery monitoring system cannot output warning signals

Active Publication Date: 2020-01-21
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a single integrated circuit cannot accurately monitor the voltage at the battery cells in the battery pack, the battery monitoring system may fail to output a warning signal when the battery pack is operating in an unsafe state

Method used

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  • Method, system and circuit for battery monitoring using redundant adjacent measurements
  • Method, system and circuit for battery monitoring using redundant adjacent measurements
  • Method, system and circuit for battery monitoring using redundant adjacent measurements

Examples

Experimental program
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Effect test

example 1

[0056] Example 1. A circuit comprising: a first integrated circuit configured to: detect a first battery voltage associated with a first battery cell; based on the detected first battery voltage, output the a representation of a first battery voltage; detecting a second battery voltage associated with a second battery cell connected in series with the first battery cell; and based on the detected second battery voltage and the first threshold and output a status signal indicating whether the second battery voltage satisfies the first threshold; and a second integrated circuit configured to: detect the first battery voltage; based on the detected comparing the first battery voltage with a second threshold, outputting a status signal indicating whether the first battery voltage satisfies the second threshold; detecting the second battery voltage; and based on the detected second battery voltage, outputting the Representation of the second battery voltage described above.

example 2

[0057] Example 2. The circuit of example 1, wherein the second integrated circuit is further configured to detect a third battery voltage associated with a third battery cell that is compatible with the first battery cell and The second battery cells are connected in series; and based on a comparison of the detected third battery voltage with a third threshold, outputting a status signal indicating whether the third battery voltage satisfies the third threshold.

example 3

[0058] Example 3. The circuit of any combination of examples 1 to 2, further comprising a control module configured to: receive a first set of status information from the first integrated circuit, the first set of status information including the a representation of the first battery voltage and a status signal indicating whether the second battery voltage satisfies the first threshold; receiving a second set of status information from the second integrated circuit, the second set of status information including the a representation of a second battery voltage, a status signal indicating whether the first battery voltage satisfies the second threshold, and a status signal indicating whether the third battery voltage satisfies the third threshold; and based on the first set state information and the second set of state information to determine whether the first battery unit, the second battery unit and the third battery unit are working in a safe state.

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PUM

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Abstract

A method, system, and circuit for battery monitoring using redundant adjacent measurements are disclosed. In one example, the circuit includes a first integrated circuit and a second integrated circuit. The first integrated circuit is configured to detect a first battery voltage associated with the first battery cell and output a representation of the first battery voltage. The first integrated circuit is also configured to detect a second battery voltage associated with a second battery cell connected in series with the first battery cell and output a status signal indicating whether the second battery voltage satisfies the first threshold. The second integrated circuit is configured to detect the first battery voltage and output a status signal indicating whether the first battery voltage satisfies a second threshold. The second integrated circuit is also configured to detect a second battery voltage and output a representation of the second battery voltage.

Description

technical field [0001] The present disclosure relates to a battery monitoring system, such as a single-cell Li-ion battery voltage monitoring system, configured to monitor the battery to ensure a safe operating condition. Background technique [0002] A battery monitoring system monitors the voltage of the battery pack to ensure safe operating conditions. For example, a single integrated circuit can monitor the voltage at each battery cell in a battery pack and can output a warning signal in response to overvoltage at the battery cell. However, if a single integrated circuit cannot accurately monitor the voltage at the battery cells in the battery pack, the battery monitoring system may fail to output a warning signal when the battery pack is operating in an unsafe state. Contents of the invention [0003] In general, the present disclosure relates to techniques for providing redundancy and diversity in battery monitoring systems while maximizing the availability of batte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/396G01R31/3835G01R19/25G05B9/03
CPCG01R31/396G01R19/2509G05B9/03G01R19/16542G01R31/371G01R31/3835G01R31/3646
Inventor 赫苏斯·鲁伊斯·塞维拉诺京特·霍费尔
Owner INFINEON TECH AG