BMS system data communication method

A communication method and system data technology, applied in the transmission system, digital transmission system, data exchange network, etc., can solve the problems of complex LAN communication debugging, complex hardware design, and increased development difficulty, so as to provide data transmission efficiency and reduce Communication pressure, the effect of preventing communication traffic jams

Pending Publication Date: 2022-03-22
SHANGHAI YUYUAN POWER TECH CO LTD
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AI Technical Summary

Problems solved by technology

If a higher-speed communication method is adopted, such as LAN local area network communication, the hardware design will often be more complicated, and a dedicated LAN communication chip needs to be adapted, which will increase the cost
At the same time, LAN communication debugging will be more complicated, increasing the difficulty of development

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Such as figure 1 Shown, in one embodiment, a kind of BMS system data communication method, this method comprises the following steps:

[0029] Step S110, assigning different physical addresses to each first level of the BMS three-level architecture. see figure 2 , which is the BMS three-level architecture communicat...

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Abstract

The invention relates to a BMS (Battery Management System) data communication method. The method comprises the following steps: allocating different physical addresses to each first level of a BMS three-level architecture; periodic phase offsets are set for the first levels of different physical addresses, so that the period of sending a complete data packet by each first level is distributed in different sampling periods of completing one-time data acquisition by the second level; and the first stage receives the data acquisition request of the second stage, and transmits a simplified data packet or a complete data packet according to the physical address and the periodic phase offset after acquiring the data of the battery pack. According to the BMS system data communication method, the data packet transmission deviation value is simplified, so that the data is greatly reduced, the bus pressure is reduced, the data capacity is reduced, the system response time is prolonged, and the BMS system communication pressure is reduced. Meanwhile, the complete data packet is sent regularly, error accumulation is prevented, the sending period of the complete data packet is homogenized, communication traffic jam is effectively prevented, and the data transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of new energy lithium battery energy storage, in particular to a BMS system data communication method. Background technique [0002] With the country's policy preference for the new energy industry, lithium batteries and BMS (battery management system, battery management system) systems are widely used in many fields. In recent years, with the increasing expansion of energy storage equipment, the accuracy and frequency requirements of sampling data have been increasing, and the communication pressure on the three-level structure of the BMS system has increased sharply. [0003] For a BMS system with a three-level architecture, the second and third levels of communication usually rely on the CAN bus, and the second-level BCU (Battery Control Unit, battery control unit) collects the battery pack voltage, Information such as temperature is packaged into cluster data packets and uploaded to the third level. Du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L61/5038
CPCH04L12/40H04L2012/40215
Inventor 尚德华杜鹏飞
Owner SHANGHAI YUYUAN POWER TECH CO LTD
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