Control device for reducing power consumption and energy storage equipment

Abstract

The utility model discloses a control device capable of reducing power consumption, namely energy storage equipment. The control device comprises a first electric control switch, a master controller and a sampling piece, the two ends of the first electric control switch are electrically connected with the output end of the switching power supply and the input end of the auxiliary power supply respectively, 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 part is used for sampling power supply power, discharge power and power generation power of the energy storage equipment. The device is arranged between a switching power supply and an auxiliary power supply, the power supply power, the discharge power and the generation power generated in the operation process of the energy storage equipment are obtained through the sampling piece, and then the main controller controls the electric control switch to be switched off or switched on according to the operation condition of the energy storage equipment. Therefore, power supply of the auxiliary power supply device is cut off in time in some idle states, energy consumption loss of the energy storage system is reduced, and energy efficiency of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply control, and in particular to a control device and energy storage device for reducing power consumption. Background Art

[0002] In existing outdoor liquid cooling cabinets, the auxiliary power supply of the energy storage inverter and DC conversion module of the equipment in the cabinet is always kept on. When the charging pile is idle, the auxiliary power supply of each device is also always on, causing a large energy loss and reducing the energy efficiency of the entire energy storage system. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a control device and energy storage equipment with reduced power consumption, reduce the energy loss of the energy storage system, and improve the energy efficiency of the system.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A control device for reducing power consumption, used for connecting a switching power supply and an auxiliary power supply of an energy storage device, comprising a first electric control switch, a main controller and a sampling device;

[0006] Two ends of the first electronically controlled switch are electrically connected to the output end of the switching power supply and the input end of the auxiliary power supply, respectively; a control end of the first electronically controlled switch is electrically connected to the master controller, and the master controller is electrically connected to the sampling element;

[0007] The sampling member is used to sample the power supply power, discharge power and power generation power of the energy storage device.

[0008] Further, it also includes a switch power supply component;

[0009] The input end of the switch power supply component is used to connect to the output end of the switch power supply, and the output end of the switch power supply component is electrically connected to the power supply input end of the first electronically controlled switch.

[0010] Further, it also includes a second electronically controlled switch;

[0011] One end of the second electronically controlled switch is electrically connected to the input end of the switch power supply component, and the other end of the second electronically controlled switch is used to connect to the output end of the switch power supply.

[0012] Furthermore, the master controller is communicatively connected to the first electronically controlled switch via a PLC bus.

[0013] Furthermore, the first electronically controlled switch is a relay.

[0014] In order to solve the above technical problems, another technical solution adopted by the utility model is:

[0015] An energy storage device for reducing power consumption, comprising an energy storage converter and the above-mentioned control device for reducing power consumption, wherein the energy storage converter comprises a first switching power supply, a first auxiliary power supply, a current conversion controller and a first sampling circuit;

[0016] The output end of the first switching power supply is electrically connected to one end of the first electronically controlled switch and the power supply end of the current converter controller in a one-to-one correspondence, the other end of the first electronically controlled switch is electrically connected to the input end of the first auxiliary power supply, and the current converter controller is communicatively connected to the first auxiliary power supply, the first sampling circuit and the main controller respectively.

[0017] Furthermore, it also includes a DC transformer, which includes a second switching power supply, a second auxiliary power supply, a voltage conversion controller and a second sampling circuit;

[0018] The output end of the second switching power supply is electrically connected to one end of another first electronically controlled switch, the power supply end of the transformer controller and the power supply end of the switch power supply component in a one-to-one correspondence. The other end of the first electronically controlled switch is electrically connected to the input end of the second auxiliary power supply. The transformer controller is communicatively connected to the second auxiliary power supply, the second sampling circuit and the main controller respectively.

[0019] The beneficial effect of the utility model is that a control device and energy storage device for reducing power consumption are proposed, which are arranged between a switching power supply and an auxiliary power supply, and the power supply power, discharge power and power generation power generated by the energy storage device during operation are obtained through a sampling component, and then the main controller controls the opening or closing of the electronically controlled switch according to the operating status of the energy storage device, so as to cut off the power supply of the auxiliary power supply in time in some idle states, reduce the energy consumption loss of the energy storage system, and improve the energy efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the connection between a control device for reducing power consumption and an energy storage device of the utility model;

[0021] Figure 2 This is a schematic diagram of an energy storage device for reducing power consumption according to the utility model.

[0022] Description of labels:

[0023] 1. First electronically controlled switch; 2. Main controller; 3. Switch power supply assembly; 4. Second electronically controlled switch; 5. First switch power supply; 6. First auxiliary power supply; 7. Current converter controller; 8. First sampling circuit; 9. Second switch power supply; 10. Second auxiliary power supply; 11. Voltage converter controller; 12. Second sampling circuit. DETAILED DESCRIPTION

[0024] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0025] Please refer to Figure 1 , a control device for reducing power consumption, used for connecting a switching power supply and an auxiliary power supply of an energy storage device, comprising a first electric control switch 1, a main controller 2 and a sampling device;

[0026] The two ends of the first electronically controlled switch 1 are electrically connected to the output end of the switching power supply and the input end of the auxiliary power supply respectively, the control end of the first electronically controlled switch 1 is electrically connected to the master controller 2, and the master controller 2 is electrically connected to the sampling element;

[0027] The sampling member is used to sample the power supply power, discharge power and power generation power of the energy storage device.

[0028] From the above description, it can be seen that the beneficial effects of the utility model are: the control device is arranged between the switching power supply and the auxiliary power supply, and the power supply power, discharge power and power generation power generated by the energy storage device during operation are obtained through the sampling device, and then the main controller 2 controls the opening or closing of the electronically controlled switch according to the operating status of the energy storage device, so as to cut off the power supply of the auxiliary power supply in time in some idle states, reduce the energy consumption loss of the energy storage system, and improve the energy efficiency of the system.

[0029] Furthermore, it also includes a switch power supply component 3;

[0030] The input end of the switch power supply component 3 is used to connect to the output end of the switch power supply, and the output end of the switch power supply component 3 is electrically connected to the power supply input end of the first electronically controlled switch 1 .

[0031] It can be seen from the above description that the switch power supply component 3 is introduced so that power can be drawn from the energy storage device for the first electric-controlled switch 1, thereby improving the system integration.

[0032] Furthermore, it also includes a second electric control switch 4;

[0033] One end of the second electronically controlled switch 4 is electrically connected to the input end of the switch power supply assembly 3 , and the other end of the second electronically controlled switch 4 is used to connect to the output end of the switch power supply.

[0034] It can be seen from the above description that the second electronically controlled switch 4 is arranged between the switching power supply and the switch power supply component 3, and is used for flexibly switching the control switch power supply.

[0035] Furthermore, the master controller 2 is communicatively connected with the first electronically controlled switch 1 via a PLC bus.

[0036] It can be seen from the above description that the main controller 2 is connected to the first electronically controlled switch 1 through the PLC bus to ensure that the communication process is more stable.

[0037] Furthermore, the first electronically controlled switch 1 is a relay.

[0038] It can be seen from the above description that the first electronically controlled switch 1 is a relay, which has fast action, stable operation and long service life.

[0039] Please refer to Figure 1 and Figure 2 , an energy storage device for reducing power consumption, comprising an energy storage converter and the above-mentioned control device for reducing power consumption, wherein the energy storage converter comprises a first switching power supply 5, a first auxiliary power supply 6, a current conversion controller 7 and a first sampling circuit 8;

[0040] The output end of the first switching power supply 5 is electrically connected to one end of the first electronically controlled switch 1 and the power supply end of the current converter controller 7 in a one-to-one correspondence, the other end of the first electronically controlled switch 1 is electrically connected to the input end of the first auxiliary power supply 6, and the current converter controller 7 is communicatively connected to the first auxiliary power supply 6, the first sampling circuit 8 and the main controller 2 respectively.

[0041] From the above description, it can be seen that the beneficial effects of the utility model are: a control device is set between the switching power supply and the auxiliary power supply, and the power supply power, discharge power and power generation power generated by the energy storage device during operation are obtained through the sampling device, and then the main controller 2 controls the opening or closing of the electronically controlled switch according to the operating status of the energy storage device, so as to cut off the power supply of the auxiliary power supply in time in some idle states, reduce the energy consumption loss of the energy storage system, and improve the energy efficiency of the system.

[0042] Furthermore, it also includes a DC transformer, which includes a second switching power supply 9, a second auxiliary power supply 10, a voltage conversion controller 11 and a second sampling circuit 12;

[0043] The output end of the second switching power supply 9 is electrically connected to one end of another first electronically controlled switch 1, the power supply end of the voltage transformer controller 11 and the power supply end of the switch power supply component 3 in a one-to-one correspondence. The other end of the first electronically controlled switch 1 is electrically connected to the input end of the second auxiliary power supply 10. The voltage transformer controller 11 is communicatively connected to the second auxiliary power supply 10, the second sampling circuit 12 and the main controller 2 respectively.

[0044] From the above description, it can be seen that a first electronically controlled switch 1 is also introduced between the second switching power supply 9 of the DC transformer and the second auxiliary power supply 10, and is also controlled by the main controller 2 to be opened or closed according to the operating status of the energy storage device to reduce energy consumption.

[0045] Please refer to Figure 1 , Embodiment 1 of the present utility model is:

[0046] A control device for reducing power consumption, used for connecting a switching power supply and an auxiliary power supply of an energy storage device, comprises a first electrically controlled switch 1, a switch power supply assembly 3, a main controller 2 and a sampling component; the two ends of the first electrically controlled switch 1 are electrically connected to the output end of the switching power supply and the input end of the auxiliary power supply, respectively, the control end of the first electrically controlled switch 1 is electrically connected to the main controller 2, and the main controller 2 is electrically connected to the sampling component; the sampling component is used to sample the power supply power, discharge power and power generation power of the energy storage device. One end of the second electrically controlled switch 4 is electrically connected to the input end of the switch power supply assembly 3, and the other end of the second electrically controlled switch 4 is used to connect the output end of the switching power supply; the output end of the switch power supply assembly 3 is electrically connected to the power supply input end of the first electrically controlled switch 1. Among them, the first electrically controlled switch 1 and the second electrically controlled switch 4 are both relays. The switch power supply assembly 3 specifically includes a relay control board, and the relay ring is flexibly switched.

[0047] In this embodiment, if Figure 1 As shown, the energy storage converter and DC transformer on the energy storage device are both equipped with a switching power supply and an auxiliary power supply. The switching power supply is used to connect to an uninterruptible power supply (UPS); a first electric control switch 1 is connected between the switching power supply and the auxiliary power supply. Combined with the operating period of the energy storage device, the use process of the control device is as follows:

[0048] 1. Auxiliary power supply control of energy storage converter:

[0049] A. When the charging pile's power supply power is less than the battery discharge power during the peak period (only the battery is discharged), and the battery SOC has not reached the low voltage protection value, the energy management system (EMS) sends a shutdown command to the energy storage converter (PCS) and disconnects the first electronic control switch 1, that is, turns off the auxiliary power supply; when the power supply power is greater than or equal to the battery discharge power, or the battery SOC reaches the low voltage protection value, the first electronic control switch 1 is closed;

[0050] B. During the valley period, when the SOC reaches the charging protection value and the charging power of the charging pile is ≤ the photovoltaic power generation power, the EMS sends a shutdown command to the energy storage inverter and disconnects the first electronic control switch 1 to turn off the auxiliary power supply of the energy storage inverter. When the charging power of the charging pile is greater than the photovoltaic power generation power, the EMS sends a startup command to the energy storage inverter, closes the first electronic control switch 1, and turns on the auxiliary power supply of the energy storage inverter. The energy storage inverter operates at the battery demand power + charging pile power ≤ the rated power of the energy storage inverter.

[0051] During normal times, according to the strategy requirements, if battery discharge is prioritized, execute according to A; if the energy storage converter is prioritized (i.e., power is drawn from the mains), execute according to B.

[0052] 2. Auxiliary power supply control of DC transformer:

[0053] The EMS patrol detection also checks the status of the charging piles of channels 1 to 4 of the refrigerator. If ≥ 1 has a plug-in signal, that is, there is power supply, the first electric control switch 1 is closed to start the auxiliary power supply; otherwise, the first electric control switch 1 is disconnected to turn off the auxiliary power supply.

[0054] Please refer to Figure 1 and Figure 2 , Embodiment 2 of the present utility model is:

[0055] A power storage device for reducing power consumption includes an energy storage converter and the above-mentioned control device for reducing power consumption, wherein the energy storage converter includes a first switching power supply 5, a first auxiliary power supply 6, a current conversion controller 7 and a first sampling circuit 8; the output end of the first switching power supply 5 is electrically connected to one end of a first electric control switch 1 and a power supply end of the current conversion controller 7 in a one-to-one correspondence, the other end of the first electric control switch 1 is electrically connected to an input end of the first auxiliary power supply 6, and the current conversion controller 7 is respectively communicatively connected to the first auxiliary power supply 6, the first sampling circuit 8 and the main controller 2.

[0056] In this embodiment, a DC transformer is also included, which includes a second switching power supply 9, a second auxiliary power supply 10, a transformer controller 11 and a second sampling circuit 12; the output end of the second switching power supply 9 is electrically connected to one end of another first electrically controlled switch 1, the power supply end of the transformer controller 11 and the power supply end of the switch power supply component 3 in a one-to-one correspondence, the other end of the first electrically controlled switch 1 is electrically connected to the input end of the second auxiliary power supply 10, and the transformer controller 11 is communicatively connected to the second auxiliary power supply 10, the second sampling circuit 12 and the main controller 2 respectively.

[0057] In summary, the utility model discloses a control device and energy storage device for reducing power consumption, which are arranged between a switching power supply and an auxiliary power supply, and obtain the power supply power, discharge power and power generation power generated by the energy storage device during operation through a sampling component, and then the main controller controls the opening or closing of the electronically controlled switch according to the operating status of the energy storage device, so as to cut off the power supply of the auxiliary power supply in time in some idle states, reduce the energy consumption loss of the energy storage system, and improve the energy efficiency of the system.

[0058] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A control device for reducing power consumption, used to connect a switching power supply and an auxiliary power supply of an energy storage device, characterized in that: It includes a first electric control switch, a main controller and a sampling component; Two ends of the first electronically controlled switch are electrically connected to the output end of the switching power supply and the input end of the auxiliary power supply, respectively; a control end of the first electronically controlled switch is electrically connected to the master controller, and the master controller is electrically connected to the sampling element; The sampling member is used to sample the power supply power, discharge power and power generation power of the energy storage device.

2. A control device for reducing power consumption according to claim 1, characterized in that: Also included is a switch power supply assembly; The input end of the switch power supply component is used to connect to the output end of the switch power supply, and the output end of the switch power supply component is electrically connected to the power supply input end of the first electronically controlled switch.

3. A control device for reducing power consumption according to claim 2, characterized in that: Also comprising a second electrically controlled switch; One end of the second electronically controlled switch is electrically connected to the input end of the switch power supply component, and the other end of the second electronically controlled switch is used to connect to the output end of the switch power supply.

4. A control device for reducing power consumption according to claim 1, characterized in that: The master controller is communicatively connected with the first electronically controlled switch via a PLC bus.

5. The control device for reducing power consumption according to claim 1, characterized in that: The first electronically controlled switch is a relay.

6. An energy storage device for reducing power consumption, comprising an energy storage converter and a control device for reducing power consumption according to any one of claims 1 to 5, characterized in that: The energy storage converter includes a first switching power supply, a first auxiliary power supply, a current conversion controller and a first sampling circuit; The output end of the first switching power supply is electrically connected to one end of the first electronically controlled switch and the power supply end of the current converter controller in a one-to-one correspondence, the other end of the first electronically controlled switch is electrically connected to the input end of the first auxiliary power supply, and the current converter controller is communicatively connected to the first auxiliary power supply, the first sampling circuit and the main controller respectively.

7. The energy storage device for reducing power consumption according to claim 6, characterized in that: It also includes a DC transformer, which includes a second switching power supply, a second auxiliary power supply, a voltage conversion controller and a second sampling circuit; The output end of the second switching power supply is electrically connected to one end of another first electronically controlled switch, the power supply end of the transformer controller and the power supply end of the switch power supply component in a one-to-one correspondence. The other end of the first electronically controlled switch is electrically connected to the input end of the second auxiliary power supply. The transformer controller is communicatively connected to the second auxiliary power supply, the second sampling circuit and the main controller respectively.

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