Storage battery parameter monitor and parameter monitoring method

A parameter monitoring and storage battery technology, which is applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve the problems of large battery damage, inability to realize online monitoring of battery internal resistance, and affect equipment, and achieve the effect of online monitoring

Inactive Publication Date: 2012-10-10
MIANYANG WEIBO ELECTRONICS
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] It can be seen that when using the above method to detect the internal resistance of the battery, the battery needs to be deeply discharged. The large discharge current will affe

Method used

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  • Storage battery parameter monitor and parameter monitoring method
  • Storage battery parameter monitor and parameter monitoring method
  • Storage battery parameter monitor and parameter monitoring method

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[0052] For the sake of reference and clarity, the technical terms, abbreviations or abbreviations used in the following are summarized and explained as follows:

[0053] The internal resistance of the battery: refers to the resistance experienced by the current flowing through the battery when the battery is working. The internal resistance of the battery is very small and generally ranges from μΩ to mΩ;

[0054] Battery voltage: The potential difference between the two ends of the battery output is an important indicator of the battery;

[0055] The temperature of the battery pack: the ambient temperature where the battery pack works. The temperature value affects the life and discharge rate of the battery.

[0056] CANopen: It is a high-level communication protocol built on CAN (Control Area Network). It includes communication sub-protocols and device sub-protocols that are often used in embedded systems. It is also a field bus commonly used in industrial control.

[0057] The technical

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Abstract

The invention discloses a storage battery parameter monitor and a parameter monitoring method. The monitor comprises a feedback voltage measuring module and a calculation module, wherein the feedback voltage measuring module comprises a controller, a first stopping condenser, a second stopping condenser and a lock-in amplifier; the controller, the first stopping condenser and a storage battery form an injection current loop; the injection current loop injects an alternating current low-frequency low-current signal to the storage battery; the lock-in amplifier, the second stopping condenser and the storage battery form a signal detection loop; the signal detection loop processes a response voltage signal through a lock-in amplification technology and acquires a feedback voltage value which corresponds to the response voltage signal; and the calculation module can calculate the internal resistance of the storage battery according to the feedback voltage value. Therefore, by the storage battery parameter monitor, the current is realized in a low-current injection mode in the process of monitoring the internal resistance of the storage battery, and the storage battery is not required to perform off-line discharge, so that the internal resistance of the storage battery can be monitored on line.

Description

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Claims

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Application Information

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Owner MIANYANG WEIBO ELECTRONICS
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