A pre-charge anti-reflection circuit for an energy storage inverter
A technology of energy storage inverter and pre-charging resistor, applied in circuit devices, battery circuit devices, safety/protection circuits, etc. Effect
Inactive Publication Date: 2019-01-15
深圳市斯玛特新能源技术有限公司
View PDF1 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] The beneficial effect of the invention is: compared with the existing pre-charging and anti-reverse circuit, the pre-charging and anti-reverse circuit of the energy storage inverter can realize the pre-charging problem at the moment when the energy storage inverter is connected to the battery, and solve the problem caused by the connection of the system. The problem of high current shock
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] Now in conjunction with accompanying drawing, invention is described in further detail. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the invention in a schematic way, so they only show the configurations related to the invention.
[0014] Refer to attached image 3 , an embodiment of an energy storage inverter pre-charging anti-reverse connection circuit, including an anti-reverse connection diode D, a pre-charging resistor R, a manual energy storage inverter start-stop switch B, a main contactor Km, an energy storage inverter It is composed of units such as the controller control unit MCU and the internal input capacitor Cin. The anti-reverse connection diode D is a general ordinary diode, and its maximum operating current is determined by the battery pack voltage and the pre-charging resistance R. The relationship between them is Id.max=battery pack voltage / R, and the anti-reverse connection diode D The anode is ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a photovoltaic energy storage system and an energy storage converter, Frequency converter, UPS and other fields of application technology, in particular to a pre-charging anti-reverse circuit for an energy storage inverter, includes an anti-reverse diode (D), Precharge Resistance (R), A switch (B) for star and stopping that manual energy storage invert, Main contactor (Km), An energy storage inverter control unit MCU and an internal input capacitor (Cin) unit, the anti-reverse connection diode (D) is a diode, An anode of that anti-reverse connection diode (D) is connected with the positive electrode of the battery module inside the energy storage inverter, A negative electrode is connected to one end of the precharge resistance (R), The precharge resistor (R) is apower resistor, and one end of the precharge resistor (R) is connected with a negative electrode of an anti-reverse connection diode (D) and one end is connected with a start-stop switch (B) of a manual energy storage inverter, and the manual energy storage inverter start-stop switch (B) is a key switch, one end of which is connected with the precharge resistor (R) and the other end of which is connected with a positive electrode of an internal input capacitor (Cin).
Description
technical field [0001] The invention relates to an application technology related to photovoltaic energy storage systems, energy storage converters, frequency converters, UPS and other fields, specifically a pre-charging anti-reverse circuit for energy storage inverters. Background technique [0002] In recent years, with the rapid development of photovoltaic energy storage technology, the power storage inverter (PCS) has developed rapidly. A very large capacitor Cin is designed. Therefore, at the moment when the battery is connected to the energy storage inverter, the battery charges the internal capacitance (Cin) of the energy storage inverter. Since the internal resistance of the battery is very small, it will cause At the moment of switching on, there is a very large peak current to charge the capacitor (Cin). This current can easily cause damage or protection of the battery management system (BMS), which will cause the system to fail to start. The system is connected as...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H02J7/00H02J3/32
CPCH02J3/32H02J7/0034Y02E10/56
Inventor 杜楠
Owner 深圳市斯玛特新能源技术有限公司