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Energy storage battery management system and bidirectional DCDC converter synchronization management method and device thereof

A technology of energy storage battery and management system, applied in the field of energy storage battery management system and bidirectional DCDC converter synchronous management method and device, can solve problems such as poor real-time performance, influence on system efficiency, influence on battery system life and reliability, etc. The effect of increasing anti-interference ability, accurate test results and improving reliability

Inactive Publication Date: 2015-03-04
江苏易美新思新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy storage battery management system is a relatively independent system. Only the energy storage battery management system sends information to the energy management module or load unit and transmits energy to the bidirectional DCDC converter. This is a one-way information transmission mode that brings the following Two limitations: 1) Since the energy storage battery management system cannot perceive changes in working conditions, it is a blind test method that cannot judge the timeliness of the test data. It is more about evaluating the static characteristics of the battery, and the real-time performance is poor; 2. ) Limited by the evaluation of battery performance and state, the dynamic characteristic information of the battery state obtained by the energy management module is limited, so that loads such as bidirectional DCDC converters, motors, and inverters cannot be accurately controlled, affecting the efficiency of the entire system, and cannot accurately provide system information. The energy state and power state of the battery system are also affected, while the life and reliability of the battery system are also affected

Method used

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  • Energy storage battery management system and bidirectional DCDC converter synchronization management method and device thereof
  • Energy storage battery management system and bidirectional DCDC converter synchronization management method and device thereof
  • Energy storage battery management system and bidirectional DCDC converter synchronization management method and device thereof

Examples

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no. 1 example

[0037] Such as figure 1 As shown, the present invention provides an energy storage battery management system and a method for synchronous management of a bidirectional DCDC converter, including the following steps:

[0038] Step 100: setting a measurement benchmark;

[0039] Step 110: Determine the working condition of the electric drive system (that is, the vehicle system);

[0040] Step 120: If it is a dynamic working condition, the bidirectional DCDC converter sends a synchronization signal to the energy storage battery management system;

[0041] Step 130: Establish a synchronous connection between the bidirectional DCDC converter and the energy storage battery management system, and collect the parameters of the current energy storage battery for the next calculation. The battery parameter table is updated through calculation, and the calculation result is sent to the energy management module at the same time.

[0042] This method sets the measurement benchmark, compar...

no. 2 example

[0044] Such as figure 2 As shown, the present invention also provides a synchronous management device for the energy storage battery management system 2 and the bidirectional DCDC converter 1, including a measurement reference setting module 21 set in the energy storage battery management system 2, a working condition judgment module 22, and a synchronous connection Module 23, acquisition module 24 and computing module 25;

[0045] The measurement standard setting module 21 is used to define the measurement window of the parameter change with time, or define the change rate of the parameter change curve with time;

[0046] The working condition judging module 22 judges the working condition of the electric drive system through the measurement reference and sends the judgment result to the bidirectional DCDC converter 1;

[0047]The synchronous connection module 23 is used to receive the synchronous signal sent by the bidirectional DCDC converter 1 and establish a synchronous...

no. 3 example

[0054] Such as image 3 Shown is another device for realizing the synchronous management of the energy storage battery system 32 and the bidirectional DCDC converter 31, which includes a measurement reference setting module 311 and a working condition judgment module 312 located in the bidirectional DCDC converter 31 and a device located in the energy storage battery The synchronous connection module 321, the acquisition module 323 and the operation module 322 of the management system 32;

[0055] A measurement benchmark setting module 311, configured to define a measurement window in which parameters change over time;

[0056] The working condition judging module 312 judges the working condition of the electric drive system through the measurement window and sends a synchronization signal to the energy storage battery management system 32;

[0057] The synchronous connection module 321 is used to receive the synchronous signal sent by the operating condition judgment module ...

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Abstract

The invention discloses an energy storage battery management system and a bidirectional DCDC converter synchronization management method and a device thereof. The method comprises the steps that a measuring reference is set; the working condition of an electric drive system is judged; if the working condition is a dynamic working condition, a bidirectional DCDC converter transmits a synchronization signal to the energy storage battery management system; and synchronization connection of the bidirectional DCDC converter and the energy storage battery management system is established, and parameters of a current energy storage battery are acquired for the next step of computation. According to the method, the parameter variation of the bidirectional DCDC converter is compared with the measuring reference to confirm the working condition of the electric drive system so that timeliness is better; besides, a synchronization working mode of the energy storage battery management system and the bidirectional DCDC converter is established, change of the working condition of the energy storage battery can be tracked in real time by the energy storage battery management system and the detection and management strategy of the energy storage battery management system can be adjusted so that the energy state and the power state of the system can be accurately provided, the service life of the battery system can be prolonged and reliability of the battery system can be enhanced.

Description

technical field [0001] The invention relates to a system for managing energy storage batteries, in particular to a method and device for synchronously managing an energy storage battery management system and a bidirectional DCDC converter. Background technique [0002] In the application of large-scale energy storage systems such as smart grids and micro-grids, and distributed energy storage systems, a DC bus connection method is often used. The connection method is that the energy storage battery module passes through a bidirectional DCDC converter (Bi-directional DC / DC Converter, bidirectional DC-DC converter) is connected to the DC bus. When energy needs to be received, the grid charges the energy storage battery through the DC bus; The bus generates electricity and transmits electricity to the grid through the inverter system. The traditional energy storage battery management system will monitor the battery status in real time, evaluate the battery status, and send the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32
CPCH02J3/32
Inventor 侯晓华刘郢郭维
Owner 江苏易美新思新能源科技有限公司
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