A storage battery intelligent monitoring system

Abstract

The invention provides a storage battery intelligent monitoring system which cooperates with a plurality of storage battery packs. Each storage battery pack is composed of a plurality of storage battery cells which are in series and / or parallel connection, and each two adjacent battery packs are connected to each other to form a to-be-tested voltage source. The system comprises a plurality of storage battery monitoring devices, a controller and a centralized communication device. Each storage battery monitoring device includes a detection control unit and a communication unit arranged in series on a same circuit board. The detection control unit is also connected to each storage battery via a multi-core wire. The communication unit is also connected to the controller and the centralized communication device wirelessly; the controller is also connected with the to-be-tested voltage source and the centralized communication device; and the centralized communication device is also connected with a data receiving device. Through implementation of the invention, the inconvenience caused by manual detection and on-line monitoring of the storage batteries in the prior art can be solved to realize the consistency and real-time performance of properties and state parameter time of each battery in each storage battery pack and to obtain more accurate storage battery state parameters.

Description

Technical field [0001] The invention relates to the technical field of storage batteries, in particular to a storage battery intelligent monitoring system. Background technique [0002] With the development of technology, the acquisition of battery status information in the engineering application field is more and more refined and strict. Relying only on the battery voltage value, working current, and the remaining battery power estimated by the voltage cannot meet the existing needs, making the Accurate research and judgment of battery life cycle and fault status has become very important. The battery status is mostly expressed by parameters such as terminal voltage, internal resistance, remaining charge SOC (state of charge), SOH (state of health), and battery operating temperature. If these key data cannot be grasped well in real time, and abnormal batteries are not found and dealt with in time, there will be serious safety hazards, and even serious safety production acciden...

AI Technical Summary

Problems solved by technology

If these key data cannot be well grasped in real time, and abnormal batteries are not found and dealt with in time, there will be serious safety hazards, and even serious safety production accidents and property losses

[0003] At present, there are mainly two ways to test the state of the battery: 1) Use a portable battery testing instrument to manually test the battery (group). A lot of manpower and material resources, low efficiency, high cost, and poor data timeliness; 2) Use battery monitoring equipment to monitor the battery (group) online. Although the data can be processed and displayed on site, it can also be transmitted to a remote monitoring platform for monitoring processing and analysis, but due to the large number of test ports of battery monitoring equipment, a large number of lines (such as test lines, power lines and communication lines) need to be laid during installation, resulting in complex construction environment, heavy maintenance workload, and high cost; at the same time, due to Long-distance testing is susceptible to interference. Using multi-frequency point excitation method to test internal resistance is often inaccurate, and there are hidden dangers of aging and short circuits. When using a main control device for inspection, it is necessary to sequentially detect each battery in the battery pack. Once there are too many single batteries, it is easy to cause a large detection time interval, so that the status of all batteries at the same time cannot be accurately obtained

[0004] Therefore, there is an urgent need for an intelligent battery monitoring system that can overcome the inconvenience caused by manual battery detection and on-line monitoring in the prior art, realize the consistency and real-time performance of each battery in the battery pack and state parameters in time, and obtain more accurate data. The state parameters of the battery

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