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Tool for monitoring pole group pressure change in battery charge/discharge process and monitoring method

A charging and discharging process and tooling technology, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problem of ignoring battery pressure changes and achieve the effect of real-time monitoring

Active Publication Date: 2016-03-09
TIANNENG BATTERY GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned devices can measure the pressure of the battery pole group more accurately, people often ignore the actual pressure changes of the battery during charging and discharging. Only after accurately grasping the internal state of the battery can an accurate optimization plan be come up with.

Method used

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  • Tool for monitoring pole group pressure change in battery charge/discharge process and monitoring method
  • Tool for monitoring pole group pressure change in battery charge/discharge process and monitoring method
  • Tool for monitoring pole group pressure change in battery charge/discharge process and monitoring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Taking the single DZM-20 battery as an example, install it in the above-mentioned tooling to form a single battery, and connect it with a pressure tester, a battery charge and discharge instrument, and a data acquisition instrument for collecting voltage and temperature data to realize battery charge and discharge. Monitoring of extreme group pressure changes during the process.

[0040] Wherein, the pressure tester is composed of upper and lower platens, a pressure data display and a sensor arranged on the upper platen.

[0041] Specific steps are as follows:

[0042] (1) First reset the displacement of the upper and lower platens of the pressure tester, then move the upper platen up, and place the tooling in the empty state between the upper and lower platens;

[0043] (2) Move the upper platen down at a speed of 5mm / min until the sealing ring is compressed by 0.1mm. At this time, carry out the airtight test of the tooling. Inject compressed air to 60kPa and keep it fo...

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PUM

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Abstract

The invention discloses a tool for monitoring pole group pressure change in a battery charge / discharge process and a monitoring method. The tool comprises a tank body for accommodating a pole group and a cover plate cooperated with the tank body. An annular sealing ring is arranged between the tank body and the cover plate. One side plate of the tank body is provided with pole column holes and a safety valve hole. The detachable and good-airtightness tool, together with the corresponding monitoring method, provides an environment, which is same with the actual circulation charge / discharge process, for the pole group, thereby realizing real-time monitoring of pole group pressure change in the battery charge / discharge process.

Description

technical field [0001] The invention relates to the technical field of storage battery manufacturing, in particular to a tooling and a monitoring method for monitoring the pressure change of the battery during charging and discharging. Background technique [0002] Lead-acid batteries are widely used in various fields of use. Although it has been more than 150 years, there are still many battery researchers conducting research on various topics, looking for better battery materials, assembly methods, and use methods. Especially in the current increasingly severe competition in the electric vehicle battery market, researchers are forced to start researching projects from all aspects to make products more suitable for market demand. [0003] The analysis of the failure modes of the returned batteries found that most of the failure modes are the softening and shedding of the positive electrode material. Many researchers have also started research on how to delay the softening o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/3835
Inventor 李桂发郭志刚邓成智刘玉
Owner TIANNENG BATTERY GROUP