System and method for multi-battery pack parallel discharge operation

A technology for operating systems and battery packs, which is applied in the charging/discharging of secondary batteries, the arrangement of multiple synchronous batteries, and battery circuit devices, etc., can solve the problem that multiple battery packs cannot be operated in parallel with hot backup and redundancy at the same time. Clear principle, good performance in the full parameter range, and easy-to-achieve effects

Active Publication Date: 2020-05-05
BEIJING XINGDA SMART CONNECTIONN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a dynamic hot backup redundant parallel discharge operation system and method for multiple battery packs in view of the technical defect that multiple battery packs cannot be operated in parallel with hot backup and redundancy in the prior art

Method used

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  • System and method for multi-battery pack parallel discharge operation
  • System and method for multi-battery pack parallel discharge operation
  • System and method for multi-battery pack parallel discharge operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] Such as Figure 9 Shown is the system embodiment 1 of the parallel discharge operation of multiple battery packs of the present invention, and the system includes:

[0139] A parallel discharge system is composed of controlled electrical battery pack BRPi, i=1~2;

[0140] All positive poles of the battery pack are connected to P+, and all negative poles are connected to P-;

[0141] The BPC serial port is empty, the battery pack address status SAD port is suspended, and the internal inspection is in discharge mode;

[0142] The effective discharge working range of the battery pack further includes:

[0143] Nominal voltage: Vnom=48.0V, (+16.7%, -12.5%) Vnom;

[0144] Nominal range: upper limit Vnup=56.0V, lower limit Vnlp=42.0V;

[0145] Friendly application: upper bound Vnua=51.0V, lower bound Vnla=45.0V, ±(4-7)%;

[0146] The default preset voltage Vset1=54.6V, the pre-set voltage Vset0=56.0V;

[0147] Selected power system load controller rated specification: 4...

Embodiment 2

[0156] Such as Figure 10 Shown is the system embodiment 2 of the parallel discharge operation of multiple battery packs of the present invention, and the system includes:

[0157] A parallel discharge system is composed of controlled electrical battery packs BRPi, i=1~3;

[0158] All positive poles of the battery pack are connected to P+, and all negative poles are connected to P-;

[0159] Select the monitor and all battery packs, connect BPCs and SADs;

[0160] Select the monitor and all battery packs, connect resistance Ri in series between BH and SAD;

[0161] The effective discharge working range of the selected system and battery pack further includes:

[0162] Nominal voltage: Vnom=48.0V, (+16.6%, -12.5%) Vnom;

[0163] Nominal range: upper limit Vnup=56.0V, lower limit Vnlp=42.0V;

[0164] Friendly application: upper bound Vnua=51.0V, lower bound Vnla=45.0V, ±(4-7)%;

[0165] Default preset voltage Vset1=54.6V;

[0166] Selected power system load controller rat...

Embodiment 3

[0177] Such as Figure 11 Shown is the system embodiment 3 of the multi-battery pack parallel discharge operation of the present invention, the system includes:

[0178] A parallel discharge system is composed of controlled electrical battery pack BRPi, i=1~12;

[0179] All positive poles of the battery pack are connected to P+, and all negative poles are connected to P-;

[0180] Select the monitor and all battery packs, connect between BPC and Sbus;

[0181] Select all battery packs, and connect resistor Ri in series between P+ and SAD;

[0182] The effective discharge working range of the selected system and battery pack further includes:

[0183] Nominal voltage: Vnom=48.0V, (+16.6%, -12.5%) Vnom;

[0184] Nominal range: upper limit Vnup=56.0V, lower limit Vnlp=42.0V;

[0185] Friendly application: upper bound Vnua=51.0V, lower bound Vnla=45.0V, ±(4-7)%;

[0186] Default preset voltage Vset1=54.6V;

[0187] Preset voltage Vset0=56.0V for excellent amplifier, Vset2=5...

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Abstract

The invention relates to the field of battery energy storage conversion power supply, and provides a multi-battery-pack dynamic hot standby redundancy parallel discharge operation system and method for overcoming the technical defect that multiple battery packs cannot simultaneously perform hot standby redundancy parallel operation in the prior art. According to the invention, the battery pack hasspecific controlled electrical type characteristics by utilizing a composite opening and closing protection and built-in conversion discharge mechanism of an electrical controlled discharge battery pack, becomes unidirectional discharge, autonomous current sharing and intelligent programmable modular equipment with programmable constant-voltage constant-current volt-ampere and droop volt-ampere characteristics, , and realizes multi-battery pack hot standby redundancy parallel discharge operation. Particularly, conversion and control are carried out through a power switch. Unexpected reverse current is avoided. Specific voltage, current and impedance control and autonomous dynamic current sharing of power conversion output are achieved. Each battery pack in the system can achieve one-way output, adjustable constant value voltage stabilization or linear droop, adjustable constant value current limiting and autonomous current sharing discharging, and the function of multi-battery-pack dynamic hot standby redundancy parallel current sharing discharging is achieved.

Description

technical field [0001] The invention relates to the field of battery energy storage conversion and power supply, and more specifically relates to a system and method for parallel discharge operation of power multi-battery packs. Background technique [0002] The power battery pack is the core component of new energy equipment; the rated voltage and rated capacity of the single power cell are low, so multiple cells are combined in series and parallel to form an entire energy storage component, commonly known as a power battery pack. The main points of battery pack design include cell voltage, cell capacity, cell series-parallel connection and battery system management. Among them, the charge and discharge management of the battery pack is the key technology used by the system. Usually, the management unit BPU inside the battery pack, commonly known as the protection board, provides overcharge and overdischarge protection for the battery pack. In addition to the output short c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42H01M10/44
CPCH01M10/4207H01M10/4257H01M10/441H01M2010/4271H02J7/0014Y02E60/10
Inventor 段志刚
Owner BEIJING XINGDA SMART CONNECTIONN TECH CO LTD
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