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Data transmission method, device, battery management system and vehicle

A technology of a battery management system and a data transmission method, which is applied in the field of vehicles and can solve the problems of heavy CAN bus load and the like

Active Publication Date: 2020-11-13
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this disclosure is to provide a data transmission method, device, battery management system and vehicle to solve the problem of heavy CAN bus load when the master and slave boards communicate with the CAN bus in the prior art

Method used

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  • Data transmission method, device, battery management system and vehicle
  • Data transmission method, device, battery management system and vehicle
  • Data transmission method, device, battery management system and vehicle

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Embodiment Construction

[0038] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0039] figure 1 is a schematic diagram of a battery management system provided according to an embodiment of the present disclosure. Such as figure 1 As shown, the battery management system includes: a main board 200 and a plurality of serially connected slave boards, including a slave board 300 1 ~ From board 300 N , N is the total number of slave boards.

[0040] The main board 200 communicates with a plurality of serially connected slave boards through the CAN bus 400 , and the main board 200 has a data transceiving terminal A, a pulse output terminal B1 and a pulse input terminal B2 . Each slave board has a data transceiver terminal C, a pulse input ...

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Abstract

The invention relates to a data transmission method and apparatus, a battery management system and a vehicle. The method comprises the steps of when receiving a pulse signal from a last slave plate via a pulse input end, determining a target packet to which the transmission at this time aims according to a preset packet transmission sequence, sending a communication message for each slave plate in the target packet to a CAN (Controller Area Network) bus, and starting to time, wherein the target packet is one packet of multiple packets; and when a time duration reaches to a first preset duration, returning to a step of outputting the pulse signal to a first slave plate via a pulse output end. In this way, not only is a sending opportunity of information optimized, but also the excessive information can be prevented from being transmitted via the CAN bus at the same time. The condition that the CAN bus has an overlarge load due to a fact that a large number of messages are transmitted at the same time is avoided, and the management capability of the battery management system is improved.

Description

technical field [0001] The present disclosure relates to the field of vehicles, in particular, to a data transmission method and device, a battery management system and a vehicle. Background technique [0002] The vehicle's battery management system has the functions of estimating the state of charge of the battery pack, monitoring the working status of the battery pack, and balancing between the single battery and the battery pack. A battery management system usually has a main board and multiple slave boards working in cooperation with the main board. The main board, also known as the main control board, is mainly responsible for processing various information collected from the slave board, so as to complete the estimation of battery power and control of the battery, and can communicate with the whole vehicle. The slave board is mainly responsible for collecting data and providing the data to the main board. The main board and the slave board usually communicate through...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/417H04L29/08
CPCH04L12/417H04L67/12H04L2012/40215
Inventor 王海燕
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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