Disclosure of utility model
The utility model aims to solve the technical problems of providing a control device and energy storage equipment for reducing power consumption, reducing energy loss of an energy storage system and improving energy efficiency of the system.
In order to solve the technical problems, the utility model adopts the following technical scheme:
A control device for reducing power consumption is used for connecting a switching power supply and an auxiliary power supply of energy storage equipment and comprises a first electric control switch, a master controller and a sampling piece;
The two ends of the first electric control switch are respectively and electrically connected with the output end of the switching power supply and the input end of the auxiliary power supply, the control end of the first electric control switch is electrically connected with the master controller, and the master controller is electrically connected with the sampling piece;
The sampling piece is used for sampling the power supply, the discharge power and the generation power of the energy storage equipment.
Further, the power supply device also comprises a switch power supply assembly;
The input end of the switch power supply assembly is used for being connected with the output end of the switch power supply, and the output end of the switch power supply assembly is electrically connected with the power supply input end of the first electric control switch.
Further, the electric control device also comprises a second electric control switch;
One end of the second electric control switch is electrically connected with the input end of the switch power supply assembly, and the other end of the second electric control switch is used for being connected with the output end of the switch power supply.
Further, the master controller is in communication connection with the first electric control switch through a PLC bus.
Further, the first electric control switch is a relay.
In order to solve the technical problems, the utility model adopts another technical scheme that:
The energy storage device for reducing the power consumption comprises an energy storage converter and the control device for reducing the power consumption, wherein the energy storage converter comprises a first switching power supply, a first auxiliary power supply, a converter controller and a first sampling circuit;
The output end of the first switching power supply is electrically connected with one end of a first electric control switch and the power supply end of the variable flow controller in one-to-one correspondence, the other end of the first electric control switch is electrically connected with the input end of the first auxiliary power supply, and the variable flow controller is respectively in communication connection with the first auxiliary power supply, the first sampling circuit and the master controller.
Further, the direct-current transformer comprises a second switching power supply, a second auxiliary power supply, a transformation controller and a second sampling circuit;
The second switch power supply output end corresponds to one end of another first electric control switch, the power supply end of the voltage transformation controller and the power supply end of the switch power supply assembly one by one, the other end of the first electric control switch is electrically connected with the input end of the second auxiliary power supply, and the voltage transformation controller is respectively in communication connection with the second auxiliary power supply, the second sampling circuit and the master controller.
The control device for reducing the power consumption and the energy storage device are arranged between the switching power supply and the auxiliary power supply, the power supply power, the discharging power and the power generation power generated in the operation process of the energy storage device are obtained through the sampling piece, and then the main controller controls the opening or closing of the electric control switch according to the operation condition of the energy storage device, so that the power supply of the auxiliary power supply is cut off in time in some idle states, the energy loss of an energy storage system is reduced, and the energy efficiency of the system is improved.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, a control device for reducing power consumption is used for connecting a switching power supply and an auxiliary power supply of an energy storage device, and comprises a first electric control switch 1, a master controller 2 and a sampling member;
The two ends of the first electric control switch 1 are respectively and electrically connected with the output end of the switching power supply and the input end of the auxiliary power supply, the control end of the first electric control switch 1 is electrically connected with the master controller 2, and the master controller 2 is electrically connected with the sampling piece;
The sampling piece is used for sampling the power supply, the discharge power and the generation power of the energy storage equipment.
The control device is arranged between the switch power supply and the auxiliary power supply, the power supply power, the discharge power and the generated power generated in the operation process of the energy storage device are obtained through the sampling piece, and then the main controller 2 controls the opening or closing of the electric control switch according to the operation condition of the energy storage device, so that the power supply of the auxiliary power supply is cut off in time in some idle states, the energy loss of the energy storage system is reduced, and the energy efficiency of the system is improved.
Further, the power supply device also comprises a switch power supply assembly 3;
The input end of the switch power supply assembly 3 is used for being connected with the output end of the switch power supply, and the output end of the switch power supply assembly 3 is electrically connected with the power supply input end of the first electric control switch 1.
As can be seen from the above description, the switch power supply assembly 3 is introduced, so that power can be taken from the energy storage device to the first electronically controlled switch 1, and the system integration is improved.
Further, the electric control device also comprises a second electric control switch 4;
One end of the second electric control switch 4 is electrically connected with the input end of the switch power supply assembly 3, and the other end of the second electric control switch 4 is used for being connected with the output end of the switch power supply.
As is apparent from the above description, the second electronically controlled switch 4 is arranged between the switching power supply and the switch power supply assembly 3 for flexibly switching the control switch power supply.
Further, the master controller 2 is in communication connection with the first electronic control switch 1 through a PLC bus.
As can be seen from the above description, the overall controller 2 is in communication connection with the first electronically controlled switch 1 through a PLC bus, so as to ensure a more stable communication process.
Further, the first electric control switch 1 is a relay.
From the above description, the first electronically controlled switch 1 is a relay, which has the advantages of fast action, stable operation and long service life.
Referring to fig. 1 and 2, an energy storage device for reducing power consumption includes an energy storage converter and the above-mentioned control device for reducing power consumption, where the energy storage converter includes a first switching power supply 5, a first auxiliary power supply 6, a converter controller 7, and a first sampling circuit 8;
The output end of the first switching power supply 5 is electrically connected with one end of the first electric control switch 1 and the power supply end of the variable current controller 7 in a one-to-one correspondence manner, the other end of the first electric control switch 1 is electrically connected with the input end of the first auxiliary power supply 6, and the variable current controller 7 is respectively in communication connection with the first auxiliary power supply 6, the first sampling circuit 8 and the main controller 2.
The utility model has the beneficial effects that the control device is arranged between the switching power supply and the auxiliary power supply, the power supply power, the discharge power and the generated power generated in the operation process of the energy storage device are obtained through the sampling piece, and then the main controller 2 controls the opening or closing of the electric control switch according to the operation condition of the energy storage device, so that the power supply of the auxiliary power supply is cut off in time in some idle states, the energy loss of the energy storage system is reduced, and the energy efficiency of the system is improved.
Further, the device also comprises a direct current transformer, wherein the direct current transformer comprises a second switching power supply 9, a second auxiliary power supply 10, a transformation controller 11 and a second sampling circuit 12;
The output end of the second switching power supply 9 is electrically connected with one end of the other first electric control switch 1, the power supply end of the voltage transformation controller 11 and the power supply end of the switch power supply assembly 3 in a one-to-one correspondence manner, the other end of the first electric control switch 1 is electrically connected with the input end of the second auxiliary power supply 10, and the voltage transformation controller 11 is respectively in communication connection with the second auxiliary power supply 10, the second sampling circuit 12 and the overall controller 2.
As can be seen from the above description, the first electronically controlled switch 1 is also introduced between the second switching power supply 9 and the second auxiliary power supply 10 of the dc transformer, and the overall controller 2 also controls the opening or closing of the first electronically controlled switch according to the operation condition of the energy storage device, so as to reduce energy consumption.
Referring to fig. 1, a first embodiment of the present utility model is as follows:
A control device for reducing power consumption is used for connecting a switching power supply and an auxiliary power supply of energy storage equipment and comprises a first electric control switch 1, a switching power supply assembly 3, a master controller 2 and a sampling piece, wherein two ends of the first electric control switch 1 are respectively and electrically connected with an output end of the switching power supply and an input end of the auxiliary power supply, a control end of the first electric control switch 1 is electrically connected with the master controller 2, the master controller 2 is electrically connected with the sampling piece, and the sampling piece is used for sampling power supply, discharge power and generated power of the energy storage equipment. One end of the second electric control switch 4 is electrically connected with the input end of the switch power supply assembly 3, the other end of the second electric control switch 4 is used for being connected with the output end of the switch power supply, and the output end of the switch power supply assembly 3 is electrically connected with the power supply input end of the first electric control switch 1. Wherein, the first electric control switch 1 and the second electric control switch 4 are both relays. The switch power supply assembly 3 specifically comprises a relay control board, and a relay ring is flexibly switched.
In this embodiment, as shown in fig. 1, the energy storage converter and the dc transformer on the energy storage device are both provided with a switching power supply and an auxiliary power supply. The switching power supply is used for being connected with an Uninterruptible Power Supply (UPS), a first electric control switch 1 is connected between the switching power supply and the auxiliary power supply, and the use process of the control device is as follows in combination with the operation period of the energy storage equipment:
1. Auxiliary power supply control of the energy storage converter:
A. When the power supply power of the charging pile is less than the battery discharge power in the peak period (only the battery is discharged), and the battery SOC does not reach the low-voltage protection value, an Energy Management System (EMS) sends a power-off to an energy storage converter (PCS) and turns off a first electric control switch 1, namely an auxiliary power supply is turned off, and when the power supply power is more than or equal to the battery discharge power, or the battery SOC reaches the low-voltage protection value, the first electric control switch 1 is turned on;
B. In the valley period, the SOC reaches a charging protection value, the charging power of the charging pile is less than or equal to the photovoltaic power generation power, the EMS transmits power for the energy storage converter to be turned off, the first electric control switch 1 is turned off, the auxiliary power supply of the energy storage converter is turned off, the charging power of the charging pile is greater than the photovoltaic power generation power, the EMS transmits power for the energy storage converter to be turned on, the first electric control switch 1 is turned on, the auxiliary power supply of the energy storage converter is turned on, and the energy storage converter operates at the battery demand power and the charging pile power less than or equal to the limit power of the energy storage converter.
And the normal stage is executed according to the A if the battery discharge is preferential and the B if the energy storage converter is preferential (i.e. power is pulled from the mains supply) according to the policy requirement.
2. Auxiliary power supply control of the direct current transformer:
The EMS tour detects the states of 1-4 channels of charging piles of the refrigerator, if more than or equal to 1 gun inserting signals exist, the first electric control switch 1 is closed, auxiliary power supply is started, and if not, the first electric control switch 1 is opened, and auxiliary power supply is closed.
Referring to fig. 1 and 2, a second embodiment of the present utility model is as follows:
the energy storage device capable of reducing power consumption comprises an energy storage converter and the control device capable of reducing power consumption, wherein the energy storage converter comprises a first switch power supply 5, a first auxiliary power supply 6, a variable flow controller 7 and a first sampling circuit 8, the output end of the first switch power supply 5 is electrically connected with one end of a first electric control switch 1 and the power supply end of the variable flow controller 7 in one-to-one correspondence, the other end of the first electric control switch 1 is electrically connected with the input end of the first auxiliary power supply 6, and the variable flow controller 7 is respectively in communication connection with the first auxiliary power supply 6, the first sampling circuit 8 and a master controller 2.
In this embodiment, the direct current transformer further comprises a second switch power supply 9, a second auxiliary power supply 10, a transformation controller 11 and a second sampling circuit 12, wherein the output end of the second switch power supply 9 is electrically connected with one end of another first electric control switch 1, the power supply end of the transformation controller 11 and the power supply end of the switch power supply assembly 3 in a one-to-one correspondence manner, the other end of the first electric control switch 1 is electrically connected with the input end of the second auxiliary power supply 10, and the transformation controller 11 is respectively in communication connection with the second auxiliary power supply 10, the second sampling circuit 12 and the overall controller 2.
In summary, the utility model discloses a control device for reducing power consumption and an energy storage device, which are arranged between a switching power supply and an auxiliary power supply, wherein the power supply power, the discharging power and the generating power generated in the operation process of the energy storage device are obtained through a sampling piece, and then a master controller controls the opening or closing of an electric control switch according to the operation condition of the energy storage device, so that the power supply of the auxiliary power supply is cut off in time in some idle states, the energy loss of an energy storage system is reduced, and the energy efficiency of the system is improved.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.