CN-224218114-U - Energy storage converter and energy storage control system

Abstract

The utility model discloses an energy storage converter and an energy storage control system, which relate to the field of energy storage, in the scheme, all the energy storage converters are connected together through a signal bus and mutually interact information, a switch module selectively connects a communication end of the switch module with an input end or an output end of the switch module according to the mode of the energy storage converters, and outputting signals or accessing signals in corresponding modes, namely when the energy storage converter is a main energy storage converter, the controller sends signals to other slave energy storage converters through the switch module and the signal bus, otherwise, when the energy storage converter is a slave energy storage converter, the controller controls the current converting circuit to convert according to the signals received by the switch module from the signal bus. In the scheme, when the main energy storage converter fails, the wiring condition of the other energy storage converters is not required to be modified, and the operation and maintenance difficulty of the site is greatly reduced.

Inventors

• GU CHENG
• YAN WAIPING
• YANG JUN
• SUN HONGWEI
• GUO MINGMING

Assignees

• 华自科技股份有限公司

Dates

Publication Date

20260508

Application Date

20250226

Claims (10)

1. 1. An energy storage converter, comprising: the control end of the current transformation circuit is connected with the first control output end of the controller so as to conduct current transformation based on the control of the controller; The signal receiving end of the controller is connected with a mode signal, the communication output end of the controller is connected with the input end of the switch module, the communication input end of the controller is connected with the output end of the switch module, and the second control output end of the controller is connected with the control end of the switch module; The switching module is characterized in that a communication end of the switching module is connected with a signal bus and is used for being connected with an input end of the switching module when the energy storage converter is a main energy storage converter; The signal bus is also connected with a switch module in other energy storage converters.
2. 2. The energy storage converter of claim 1, wherein the switch module is a single pole double throw switch, a movable contact of the single pole double throw switch is a communication end of the switch module, a first stationary contact of the single pole double throw switch is an output end of the switch module, a second stationary contact of the single pole double throw switch is an input end of the switch module, and a control end of the single pole double throw switch is a control end of the switch module, so that the movable contact is used for being connected with the second stationary contact when the energy storage converter is a main energy storage converter, and is connected with the first stationary contact when the energy storage converter is a slave energy storage converter.
3. 3. The energy storage converter of claim 1, further comprising: The first input end of the two-way signal isolator is connected with the communication output end of the controller, the second input end of the two-way signal isolator is connected with the output end of the switch module, the first output end of the two-way signal isolator is connected with the communication input end of the controller, and the second output end of the two-way signal isolator is connected with the input end of the switch module.
4. 4. The energy storage converter of claim 3, wherein the two-way signal isolator is a digital isolator, an INA pin of the digital isolator is connected to a communication output of the controller, an OUTA pin is connected to an output of the switching module, an OUTB pin is connected to a communication input of the controller, and an INB pin is connected to an input of the switching module.
5. 5. The energy storage converter of claim 1, further comprising: the input end of the single-channel signal isolator is connected with the second control output end of the controller, and the output end of the single-channel signal isolator is connected with the control end of the switch module.
6. 6. The energy storage converter of claim 5, wherein said single-channel signal isolator comprises an optocoupler, a first resistor, a second resistor, a third resistor, and a fourth resistor; The anode of the light emitting diode of the optocoupler is connected with the first end of the first resistor, the cathode of the light emitting diode is connected with the first end of the second resistor, the base electrode of the triode of the optocoupler is connected with the light emitting diode, the collector electrode of the triode is respectively connected with the first end of the third resistor, the first end of the fourth resistor and the emitter electrode of the triode, and the emitter electrode of the triode is connected with the ground; The second end of the first resistor is connected with a first power supply; the second end of the second resistor is connected with the second control output end of the controller; The second end of the third resistor is connected with a second power supply; And the second end of the fourth resistor is connected with the control end of the switch module.
7. 7. The energy storage converter of claim 6, wherein said single-pass signal isolator further comprises: And the first end of the filter device is respectively connected with the first end of the third resistor, the first end of the fourth resistor and the collector electrode of the triode, and the second end of the filter device is respectively connected with the emitter electrode of the triode and the ground wire.
8. 8. An energy storage converter as in any of claims 1-7, further comprising: And the display touch device is connected with the signal receiving end of the controller and is used for transmitting and displaying the mode signal to the controller based on control.
9. 9. The energy storage converter of claim 8, wherein the display touch device is a touch screen, and the touch screen is connected to a signal receiving end of the controller, and is configured to transmit and display the mode signal to the controller based on control.
10. 10. An energy storage control system comprising N energy storage converters as claimed in any one of claims 1 to 9 and a signal bus, each of said energy storage converters being connected to said signal bus.

Description

Energy storage converter and energy storage control system Technical Field The utility model relates to the field of energy storage, in particular to an energy storage converter and an energy storage control system. Background With the development of the energy storage field, an energy storage power station system composed of a plurality of energy storage converters (Power Conversion System, PCS) is becoming more important, so as to ensure that all the energy storage converters in the energy storage power station system operate cooperatively. In the conventional scheme, a plurality of energy storage converters are adjusted to a mode of a host machine with multiple slaves, wiring is carried out in a mode of the host machine with multiple slaves, a signal output end of the host energy storage converter is connected with a signal input end of a first slave energy storage converter, a signal input end of the first slave energy storage converter is connected with a signal input end of a second slave energy storage converter in series in sequence, the host energy storage converter only carries out signal output, and the slave energy storage converter only carries out signal access, as shown in fig. 1, when the host energy storage converter-energy storage converter 1 fails, one of the slave energy storage converters needs to be set as the host energy storage converter, and then the wiring condition of each energy storage converter needs to be modified, so that the operation and maintenance difficulty of the site is increased. Disclosure of utility model The utility model aims to provide an energy storage converter and an energy storage control system, when a main energy storage converter fails, the wiring condition of the other energy storage converters is not required to be modified, and the operation and maintenance difficulty of the site is greatly reduced. In order to solve the technical problems, the present utility model provides an energy storage converter, including: the control end of the current transformation circuit is connected with the first control output end of the controller so as to conduct current transformation based on the control of the controller; The signal receiving end of the controller is connected with a mode signal, the communication output end of the controller is connected with the input end of the switch module, the communication input end of the controller is connected with the output end of the switch module, and the second control output end of the controller is connected with the control end of the switch module; The switching module is characterized in that a communication end of the switching module is connected with a signal bus and is used for being connected with an input end of the switching module when the energy storage converter is a main energy storage converter; The signal bus is also connected with a switch module in other energy storage converters. Optionally, the switch module is a single-pole double-throw switch, the movable contact of the single-pole double-throw switch is a communication end of the switch module, the first stationary contact of the single-pole double-throw switch is an output end of the switch module, the second stationary contact of the single-pole double-throw switch is an input end of the switch module, and the control end of the single-pole double-throw switch is a control end of the switch module, so that the movable contact is connected with the second stationary contact when the energy storage converter is a main energy storage converter, and is connected with the first stationary contact when the energy storage module is a slave energy storage converter. Optionally, the method further comprises: The first input end of the two-way signal isolator is connected with the communication output end of the controller, the second input end of the two-way signal isolator is connected with the output end of the switch module, the first output end of the two-way signal isolator is connected with the communication input end of the controller, and the second output end of the two-way signal isolator is connected with the input end of the switch module. Optionally, the two-way signal isolator is a digital isolator, an INA pin of the digital isolator is connected with a communication output end of the controller, an OUTA pin is connected with an output end of the switch module, an OUTB pin is connected with a communication input end of the controller, and an INB pin is connected with an input end of the switch module. Optionally, the method further comprises: the input end of the single-channel signal isolator is connected with the second control output end of the controller, and the output end of the single-channel signal isolator is connected with the control end of the switch module. Optionally, the single-channel signal isolator comprises an optocoupler, a first resistor, a second resistor, a third resistor and a fourth resistor; The anode of the li