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Photovoltaic energy storage BMS system

A photovoltaic energy storage, optocoupler isolation technology, applied in photovoltaic modules, photovoltaic power generation, photovoltaic power stations, etc., can solve the problems of inability to meet a large number of battery management human-computer interaction, complex battery management system structure, etc., to meet the needs of battery management and maintenance, the effect of simple structure

Inactive Publication Date: 2015-09-16
CHINA THREE GORGES UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a photovoltaic energy storage BMS system, which solves the problem that the existing battery management system has a complex structure and cannot meet the needs of a large number of battery management and human-computer interaction

Method used

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  • Photovoltaic energy storage BMS system

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Embodiment Construction

[0009] The present invention will be described in detail below in combination with specific embodiments.

[0010] The system of the present invention is as figure 1 As shown, including a lithium iron phosphate battery pack 1, the positive electrode of each lithium iron phosphate battery in the lithium iron phosphate battery pack 1 is connected to the detection unit 2 through a voltage sampling circuit, and each lithium iron phosphate battery in the lithium iron phosphate battery pack 1 The negative electrode of the battery is connected to the detection unit 2 through the temperature sampling circuit. There are four detection units 2. The BDI battery display interface module 3 communicates through the optocoupler isolated RS485-2 communication interface, optocoupler isolated RS485-3 communication interface, and optocoupler isolated RS485-4. Interface, optocoupler isolation RS485-5 communication interface is connected to four detection units 2, the positive pole of BDI battery d...

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Abstract

The present invention discloses a photovoltaic energy storage BMS system. A lithium iron phosphate battery pack is connected with detection units by voltage sampling circuits and temperature sampling circuits; a BDI batter display interface module is connected with the detection units by photo coupler isolation communication interfaces; an anode of the BDI batter display interface module is connected with an anode of the lithium iron phosphate battery pack; the grounding end of the BDI batter display interface module is connected with a cathode of the lithium iron phosphate battery pack; the BDI batter display interface module is connected with a current detection circuit; the cathode of the lithium iron phosphate battery pack is connected with a cathode of the charge-discharge end of a photovoltaic cell panel by the current detection circuit; the BDI battery display interface module is connected with an anode of the charge-discharge end of the photovoltaic cell panel by a charge-discharge control circuit; the BDI battery display interface module is connected with a PC machine by an EMS storage management module; the BDI battery display interface module is connected with an LCD liquid crystal screen; and the BDI battery display interface module is also connected with a start-stop switch. The photovoltaic energy storage BMS system has the beneficial effects that the structure is simple; and the requirement for managing and maintaining a large number of batteries can be met.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic energy storage, and relates to a photovoltaic energy storage BMS system. Background technique [0002] The battery management system (BATTERY MANAGEMENT SYSTEM, referred to as BMS) is a bridge between the battery and the user, and the main object is the secondary battery (also known as the rechargeable battery). However, secondary batteries have some disadvantages, such as less stored energy, short life, problems in series and parallel use, safety in use, and difficulty in estimating battery power. Photovoltaic energy storage BMS is mainly to improve the utilization rate of lithium iron phosphate battery, prevent overcharging and overdischarging of the battery, prolong the service life of the battery, and monitor the state of the battery. In most of the existing BMS system products, the system is mainly used for the management of on-board batteries, but for other occasions such as photovolta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/35
CPCH02J7/35H02S10/00Y02E10/56
Inventor 王归新方鑫
Owner CHINA THREE GORGES UNIV
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