CN210431005U - Battery self-powered starting system of energy storage system - Google Patents
Battery self-powered starting system of energy storage system Download PDFInfo
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- CN210431005U CN210431005U CN201921108922.9U CN201921108922U CN210431005U CN 210431005 U CN210431005 U CN 210431005U CN 201921108922 U CN201921108922 U CN 201921108922U CN 210431005 U CN210431005 U CN 210431005U
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Abstract
The utility model provides an energy storage system battery self-power start-up system, include: the output end of the power grid is connected with a K1 relay coil; the input end of the switching power supply L is connected with a power grid, and the output end of the switching power supply L is connected with a normally open contact of a K1 relay; the battery is used for supplying power to the high-voltage box, the PCS, the STS and the control panel when the power grid is out of power; the high-voltage DC/DC is connected with the output end of the battery, and the output end of the high-voltage DC/DC is connected with the normally closed contact of the K1 relay; the output of K1 relay normally open contact, the output of K1 relay normally closed contact all are connected with high-pressure box, PCS, STS, control panel, select battery powered, the power grid power supply, utilize the action of getting to lose electricity, relay normally open contact, normally closed contact of relay, realize supply circuit's switching, and through the delay capacitance of control panel, the delay outage when realizing supply circuit and switching realizes seamless switching.
Description
Technical Field
The utility model relates to a circuit field especially relates to energy storage system battery self-power starting system.
Background
The energy storage mainly comprises the storage of energy such as heat energy, kinetic energy, electric energy, electromagnetic energy, chemical energy and the like, the research, development and application of the existing energy storage technology mainly comprises the storage of heat energy and electric energy, and the energy storage technology is widely applied to the fields of solar energy utilization, peak load shifting of electric power, waste heat and waste heat recovery, energy conservation of industrial and civil buildings and air conditioners and the like.
In the prior art, the whole energy storage system control part adopts a UPS power supply mode, the cost is high, and a power distribution cabinet is required to be additionally configured to supply power to the system control part.
CN201721085908.2 a battery array power supply device and energy storage system, the device includes: the device comprises a main control module, a voltage detection module, a power supply output port and a plurality of battery power supply modules, wherein the battery power supply modules are connected with the power supply output port in a parallel connection mode, and the battery power supply modules output 24V. Energy storage system includes a plurality of foretell battery array power supply unit, first relay, second relay, commercial power interface, voltage detection module, AC DC module, monitoring device and to outer power supply interface, the utility model discloses in utilize the battery directly to supply power for master control module (monitored control system), compare the tradition and export 38.4V through former battery, input UPS output 220V, saved UPS through power module becomes 24V's scheme again, practiced thrift the cost.
SUMMERY OF THE UTILITY MODEL
The application provides an energy storage system battery self-power starting system prevents that system battery power supply, grid power supply interconversion from appearing the outage problem, makes system control electric energy accomplish seamless handover enough, in order to realize above-mentioned purpose, adopts following technical scheme: the method comprises the following steps: the output end of the power grid is connected with a K1 relay coil;
the input end of the switching power supply L is connected with a power grid, and the output end of the switching power supply L is connected with a normally open contact of a K1 relay;
the battery is used for supplying power to the high-voltage box, the PCS, the STS and the control panel when the power grid is out of power;
the high-voltage DC/DC is connected with the output end of the battery, and the output end of the high-voltage DC/DC is connected with the normally closed contact of the K1 relay;
the output end of the normally open contact of the K1 relay and the output end of the normally closed contact of the K1 relay are connected with the high-voltage box, the PCS, the STS and the control panel, and the battery power supply and the power grid power supply are selected.
Preferably, the high voltage box is connected with the control panel through a communication line.
Preferably, the PCS is connected to the control board through a communication line.
Preferably, the PCS output end is also connected with a load.
Preferably, the load is connected with a sampling port of the control board through a wire to realize voltage sampling.
Preferably, the STS is connected to the control board through a communication line.
Preferably, a delay capacitor is arranged on the control panel, and the delay support system is powered off.
Directly getting electricity from a system battery side, and converting the electricity into 24VDC for a system to use through high-voltage DC/DC; meanwhile, the power is supplied by an alternating current side, and is converted into 24VDC through a switching power supply L to be connected with a direct current system side 24V in parallel for use, so that 24V power supply is provided for the whole energy storage system, and the efficiency of the whole system is improved.
The utility model has the advantages that: when no voltage exists in a power grid, the battery supplies power to the high-voltage DC/DC and outputs 24VDC to supply power to the high-voltage box, the PCS, the STS and the control panel, so that the whole set of system is started; when the power grid is electrified, the switching power supply L is supplied with power through the power grid, meanwhile, the coil of the K1 relay is electrified, the K1 normally closed contact is disconnected, the K1 normally open contact is closed, the 24V output of the high-voltage DC/DC is disconnected, and the switching power supply L supplies 24VDC to the whole system; the delay capacitor is arranged on the control panel, so that the 1S of the system can be supported without power failure, the power failure problem when the system is switched from battery power supply to power grid power supply is prevented, and the system control electric energy can be seamlessly switched. When the system supplies power reversely and is switched to an off-grid state from the power grid, seamless switching of a system control part can be met.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in fig. 1, the present invention includes: the power grid is used for carrying out alternating current power supply on the high-voltage box, the PCS, the STS and the control panel when the power grid is free of electricity, and the output end of the power grid is connected with a K1 relay coil;
the input end of the switching power supply L is connected with a power grid, and the output end of the switching power supply L is connected with a normally open contact of a K1 relay;
the battery is used for supplying power to the high-voltage box, the PCS, the STS and the control panel in a direct current mode when a power grid is out of power;
in fig. 1, the output end of the battery is connected with the high-voltage box, the output end of the high-voltage box is connected with the energy storage converter (PCS), the output end of the PCS is connected with the load and the Static Transfer Switch (STS), and the STS is further connected with the power grid to perform two-way power supply switching through the STS, so as to supply power to the load;
the high-voltage DC/DC is connected with the output end of the battery, and the output end of the high-voltage DC/DC is connected with the normally closed contact of the K1 relay;
the output end of the normally open contact of the K1 relay and the output end of the normally closed contact of the K1 relay are connected with the high-voltage box, the PCS, the STS and the control panel, and the battery power supply and the power grid power supply are selected.
Preferably, the high voltage box is connected with the control panel through a communication line.
Preferably, the PCS is connected to the control board through a communication line.
Preferably, the load is connected with a sampling port of the control board through a wire to realize voltage sampling.
Preferably, the STS is connected to the control board through a communication line.
Preferably, a delay capacitor is arranged on the control panel, and the delay support system is powered off.
By adopting the scheme, when no voltage exists in a power grid, the battery supplies power to the high-voltage DC/DC, and outputs 24VDC to supply power to the high-voltage box, the PCS, the STS and the control panel, so that the whole set of system is ensured to be started;
when the power grid is electrified, the switching power supply L is supplied with power through the power grid, meanwhile, the K1 relay coil is electrified, the K1 normally closed contact is disconnected, the K1 normally open contact is closed, the 24V output of the high-voltage DC/DC is disconnected, and the switching power supply L supplies 24VDC to the whole system.
The delay capacitor is arranged on the control panel, the 1S uninterrupted power supply of the system can be supported, the power failure problem when the system is switched from battery power supply to power grid power supply is prevented, seamless switching of system control electric energy can be achieved, reverse power supply of the system is achieved, and seamless switching of a system control part can be met when the power grid is switched to an off-grid state.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.
Claims (7)
1. Energy storage system battery self-power start-up system its characterized in that: the method comprises the following steps: the output end of the power grid is connected with a K1 relay coil; the input end of the switching power supply L is connected with a power grid, and the output end of the switching power supply L is connected with a normally open contact of a K1 relay; the battery is used for supplying power to the high-voltage box, the PCS, the STS and the control panel when the power grid is out of power; the high-voltage DC/DC is connected with the output end of the battery, and the output end of the high-voltage DC/DC is connected with the normally closed contact of the K1 relay; the output end of the normally open contact of the K1 relay and the output end of the normally closed contact of the K1 relay are connected with the high-voltage box, the PCS, the STS and the control panel, and the battery power supply and the power grid power supply are selected.
2. The energy storage system battery self-powered start-up system of claim 1, wherein: the high-voltage box is connected with the control panel through a communication line.
3. The energy storage system battery self-powered start-up system of claim 1, wherein: the PCS is connected with the control panel through a communication line.
4. The energy storage system battery self-powered start-up system of claim 1, wherein: the PCS output end is also connected with a load.
5. The energy storage system battery self-powered start-up system of claim 4, wherein: the load is connected with a sampling port of the control panel through a lead to realize voltage sampling.
6. The energy storage system battery self-powered start-up system of claim 1, wherein: the STS is connected to the control board via a communication line.
7. The energy storage system battery self-powered start-up system of claim 1, wherein: the control panel is provided with a delay capacitor, and the delay support system is powered off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921108922.9U CN210431005U (en) | 2019-07-15 | 2019-07-15 | Battery self-powered starting system of energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921108922.9U CN210431005U (en) | 2019-07-15 | 2019-07-15 | Battery self-powered starting system of energy storage system |
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| CN210431005U true CN210431005U (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186878A (en) * | 2020-08-27 | 2021-01-05 | 量道(深圳)储能科技有限公司 | Black start circuit structure of low-voltage energy storage system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186878A (en) * | 2020-08-27 | 2021-01-05 | 量道(深圳)储能科技有限公司 | Black start circuit structure of low-voltage energy storage system and control method |
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