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A battery management system for electric vehicles

A battery management system and technology for electric vehicles, applied in the field of lithium-ion power battery management systems, can solve the problems of low consumption of main control modules, inconvenient production and stocking, etc.

Active Publication Date: 2022-01-14
JIANGSU ALFA BUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is: the consumption of the main control module of the battery management system is very small, and it is inconvenient for production and stocking

Method used

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  • A battery management system for electric vehicles
  • A battery management system for electric vehicles
  • A battery management system for electric vehicles

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Experimental program
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Embodiment Construction

[0011] Such as figure 1 As shown, a battery management system for an electric vehicle in the present invention includes a main control module and a sampling module.

[0012] Such as figure 2 As shown, the hardware circuit of the main control module includes a power supply part, a main chip and peripheral circuits, a relay control circuit, and a CAN communication circuit.

[0013] Such as image 3 As shown, the hardware circuit of the sampling module includes a power supply part, a main chip and peripheral circuits, a relay control circuit, a CAN communication circuit, a single sampling circuit, and a battery temperature detection circuit.

[0014] The sampling module contains all the hardware functions of the main control module, plus a single sampling circuit for collecting the voltage of the single cell and a battery temperature detection circuit for collecting the temperature of the single cell. These two parts can be used independently as the main control module. Enabl...

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Abstract

The invention discloses a battery management system for electric vehicles, which includes a main control module and a sampling module, wherein the hardware circuit of the main control module includes a power supply part, a main chip and peripheral circuits, a relay control circuit, a CAN communication circuit, and hardware of the sampling module The circuit includes power supply part, main chip and peripheral circuit, relay control circuit, CAN communication circuit, monomer sampling circuit, battery temperature detection circuit, in which the sampling module can be used as the main control module, and the sampling module is not enabled when the sampling module is used as the main control module The functions of the body sampling circuit and the battery temperature detection circuit are written into the software program of the corresponding main control module at the same time. The sampling module is used to realize the functions of the main control module. By writing different software programs, different module functions are realized. The unification of hardware simplifies the development, production and stocking, after-sales maintenance and other work.

Description

technical field [0001] The invention relates to a lithium-ion power battery management system widely used in the field of electric vehicles. Background technique [0002] At present, due to the large number of battery strings in the electric vehicle industry, the battery management system adopts a master-slave system architecture (such as figure 1 ), which is divided into two parts, the main control module and the sampling module. The sampling module is responsible for collecting information such as the voltage and temperature of all cells, and uploading the information to the upper-level system through CAN (controller local area network bus) communication; the main control The module is responsible for collecting information such as the highest and lowest single voltage and temperature information of all the following sampling modules, controlling the main relay of the system, and communicating with the vehicle controller. Each car is a structure of a main control module p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00B60L58/12
CPCH02J7/00B60L53/00Y02T90/16Y02T10/70Y02T10/7072Y02T90/14
Inventor 杨重山
Owner JIANGSU ALFA BUS