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Battery management system with parallel connection of multiple BMS modules and realization method thereof

A technology of a battery management system and an implementation method, which is applied in the field of battery management systems with multiple BMS modules in parallel, can solve the problems that the battery management system cannot provide enough energy, the application of the battery management system is inflexible, and the battery management system has many types, etc. Effectiveness of data processing capability and efficiency, shortening development cycle, and improving security

Inactive Publication Date: 2017-03-22
HUIZHOU BNET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, with the expansion of the electric vehicle market and the development of household energy storage, there are many types of energy storage products with different demands. inflexible application
Generally, the maximum power consumption of a battery management system is fixed; the same battery management system may only be used for one energy storage system, if the actual power used is greater than the power of the current battery management system, the battery The management system cannot provide enough energy to supply
Conversely, if the actual power consumption is much smaller than the power of the battery management system, resources will be wasted, and redesign and development will be required to increase development costs

Method used

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  • Battery management system with parallel connection of multiple BMS modules and realization method thereof
  • Battery management system with parallel connection of multiple BMS modules and realization method thereof
  • Battery management system with parallel connection of multiple BMS modules and realization method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] see figure 1 , a method 20 for implementing a battery management system in which multiple BMS modules are connected in parallel, the steps comprising:

[0039] S1. Connect multiple BMS modules in parallel, and set any one of the BMS modules as the main module, and the remaining BMS modules as sub-modules;

[0040] S2. The sub-module sends its own module data to the main module, and the main module receives the data of each sub-module, and processes the data of its own module and the data of the sub-modules.

[0041] In this embodiment, the steps of setting any one of the BMS modules in the step S1 as the main module, and the remaining BMS modules as sub-modules are specifically:

[0042] Use the ID setting unit of the BMS module to assign addresses to its own BMS modules, set one of the BMS modules as the main module, and set the other BMS modules as sub-modules.

[0043] The ID setting unit is specifically a multi-way dialer, and the multi-way dialer can set the main...

Embodiment 2

[0055] Except for the following technical features, the other technical features of this embodiment are the same as those of Embodiment 1. In the step S1, any one of the BMS modules is set as the main module, and the rest of the BMS modules are sub-modules. The bus sends corresponding addresses to each BMS module, and one of the BMS modules is set as the main module, and the other BMS modules are set as sub-modules.

[0056] Take the parallel connection of three BMS modules as an example: the host computer sets the address of one of the BMS modules to ID=000, and sets this BMS module as the main module, which is responsible for receiving the data of each sub-module and controlling the data of the main module and each sub-module. The data is processed. The remaining two BMS modules are set as sub-modules, and the IDs of the two sub-modules are 100 and 101 respectively, and each sub-module is responsible for sending its own data to the main module.

Embodiment 3

[0058] see figure 2 A battery management system 10 in which multiple BMS modules are connected in parallel includes: multiple BMS modules are connected in parallel, the BMS modules include a positive output 1 and a negative output 2, the positive outputs 1 of the multiple BMS modules are connected in sequence, and the multiple BMS modules are connected in sequence. The negative output 2 of the BMS module is connected in sequence. The positive output 1 and the negative output 2 are also externally connected with loads.

[0059] The BMS module also includes a CAN communication unit 3, the CAN communication unit 3 is connected to the load through the CAN bus, and the CAN communication units 3 of a plurality of the BMS modules are sequentially connected through the CAN bus; the BMS module also includes an ID setting A unit 4, the ID setting unit 4 is used to set the address of the BMS module. The load controls the charging and discharging of each BMS module.

[0060] The batte...

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Abstract

The invention discloses a realization method of a battery management system with the parallel connection of multiple BMS modules. The method comprises the steps of (S1) allowing multiple SMS modules to be connected in parallel, setting any one BMS module as a master module and other BMS modules as sub modules, and (S2) allowing the sub modules to send the data of the sub modules to the master module, and allowing the master module to receive the data of each sub module and process the data of the master module and the data of the sub modules. The invention provides the realization method of a battery management system with the parallel connection of multiple BMS modules, the master module and the sub modules are arranged in the multiple BMS modules, the labor division of each of the BMS modules is clear, the use efficiency of the battery management system is improved, and the reliability of the battery management system is increased. At the same time, the master module monitors the data collection of each BMS module in real time and immediately controls and stops the working of each BMS module in the condition of data or information loss and the like, and the safety of the battery management system is improved.

Description

technical field [0001] The invention relates to the field of battery management systems, in particular to a battery management system with multiple BMS modules connected in parallel and an implementation method thereof. Background technique [0002] The battery management system (BMS) is a new energy storage product that was born in this century. Because of the difficulty in controlling the electrochemical reaction and the elusive changes in the performance of materials in this process, it is necessary to have such a housekeeper to supervise and adjust the limit battery pack at all times. Behavior to ensure safe use. [0003] The battery management system (BMS) is a key component of electric vehicles, energy storage power stations, and home energy storage. In order to ensure the safe and reliable operation of the battery, the battery management system needs to have functions such as battery status monitoring and evaluation, charge and discharge control, and battery equaliza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/441H01M2010/4271H02J7/0014H02J7/0029H02J7/00302H02J7/00304H02J7/00306Y02E60/10
Inventor 徐文赋任素云王延聪
Owner HUIZHOU BNET TECH CO LTD
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