Remote monitoring device for lithium-ion battery

Abstract

The invention discloses a remote monitoring device for a lithium-ion battery, which adopts the structure that a wireless acquisition device is fixedly connected with the lithium-ion battery through a bracket; the output end of the wireless acquisition device is in wireless connection with the input end of a data transmission device; the output end of the data transmission device is connected with the input end of a remote monitoring center through the Internet; a wireless communication module, a processor, a sensor module and a power supply module are arranged in the wireless acquisition device in an built-in manner; and the sensor module comprises a plurality of wireless sensors. Through the invention, the accurate and timely monitoring for the lithium-ion battery can be realized, the reliable reference is provided for the calculation of the battery electrical quantity, undesirable individual battery can be exchanged, and the good state of the whole lithium-ion battery is ensured.

Description

technical field [0001] The invention relates to a remote monitoring device, in particular to a remote monitoring device for a lithium battery pack. Background technique [0002] The demand for lithium batteries is increasing year by year with the continuous expansion of application fields. Due to the gap in the manufacturing process and equipment of lithium batteries, the production process of domestic lithium batteries is uneven, and the manufacturing standards are not consistent. For example, the on-board lithium batteries used in pure electric vehicles are composed of individual batteries connected in series or parallel to form a battery pack. Due to the constraints of the performance of the battery cells, if the chargeability and temperature changes of each battery cell are inconsistent, it is easy to Cause the overdischarge phenomenon of the whole battery pack, affect its service life. [0003] At present, most of the electrical performance monitoring of lithium batter...

AI Technical Summary

Problems solved by technology

For example, the on-board lithium batteries used in pure electric vehicles are composed of individual batteries connected in series or in parallel to form a battery pack, which is restricted by the performance of the battery cells. If the chargeability and temperature changes of each battery cell are inconsistent, it is easy Causes over-discharge of the entire battery pack and affects its service life

[0003] At present, most of the electrical performance monitoring of lithium battery packs uses the open circuit voltage method to estimate its state of charge. However, this method is only for the overall lithium battery pack, and the performance of each battery cell cannot be completely consistent, so it cannot be monitored. Charging of the battery cell

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