CN219592109U - Scram delay circuit of energy storage system - Google Patents
Scram delay circuit of energy storage system Download PDFInfo
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- CN219592109U CN219592109U CN202223408391.XU CN202223408391U CN219592109U CN 219592109 U CN219592109 U CN 219592109U CN 202223408391 U CN202223408391 U CN 202223408391U CN 219592109 U CN219592109 U CN 219592109U
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- power supply
- main relay
- driving unit
- relay
- control unit
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Abstract
The utility model discloses an emergency stop delay circuit of an energy storage system, which comprises: the system power supply, the control unit, the drive unit, the time delay relay, the scram button, the first main relay and the second main relay specifically comprise: the power supply end of the control unit is connected with the output end of the system power supply; the power supply end of the driving unit is connected with the output end of the system power supply through the delay relay; the output end of the system power supply is connected with the emergency stop button; the data quantity output interface of the control unit is connected with the input end of the driving unit; the output end of the driving unit is connected with the first main relay and the second main relay. The scheme of the utility model can solve the problems of emergency stop failure and adhesion failure of the energy storage system in the prior art under the emergency stop condition, and improves the reliability and safety of the energy storage system.
Description
Technical Field
The utility model relates to the technical field of circuits, in particular to an emergency stop delay circuit of an energy storage system.
Background
The energy storage system is provided with a load switch in a bus cabinet of a primary framework and a relay in a cluster-level high-voltage box of a secondary framework. The current emergency stop mode of the energy storage system is to delay to disconnect the relays of the cluster level through software, and when the energy storage system needs to be stopped emergently, the load switch in the bus cabinet and the relays in each cluster of high-voltage boxes are disconnected simultaneously.
When the energy storage system is in emergency stop, the main control unit controls the relay to be disconnected, but the driving unit of the relay in the cluster-level high-voltage box and the main control unit are in the same power supply loop, signals need to be sent to the driving unit by the main control unit, and the driving power supply circuit of the relay is disconnected by the driving unit, so that when emergency stop occurs, the driving power supply circuit of the relay cannot be directly disconnected by the main control unit, and the emergency stop failure risk exists. And the relay is relatively fragile, when the relays in the multi-cluster high-voltage box are disconnected together, if the relays can not be disconnected simultaneously, the relay which is disconnected later is easy to cause adhesion failure due to bearing multiple cluster-level currents.
Disclosure of Invention
The utility model provides an emergency stop delay circuit of an energy storage system, which aims to solve the problems of emergency stop failure and adhesion failure of the energy storage system under the emergency stop condition in the prior art and improve the reliability and safety of the energy storage system.
In a first aspect, the present utility model provides an emergency shutdown delay circuit for an energy storage system, comprising: the system power supply, the control unit, the drive unit, the time delay relay, the scram button, the first main relay and the second main relay specifically comprise:
the power supply end of the control unit is connected with the output end of the system power supply;
the power supply end of the driving unit is connected with the output end of the system power supply through the delay relay;
the output end of the system power supply is connected with the emergency stop button;
the data quantity output interface of the control unit is connected with the input end of the driving unit;
the output end of the driving unit is connected with the first main relay and the second main relay.
The utility model provides an emergency stop delay circuit of an energy storage system, which is characterized in that power supply ends of a control unit and a driving unit are respectively connected with an output end of a system power supply, so that power supply loops of the control unit and the driving unit are mutually independent, and a main relay is directly controlled by the driving unit, thereby effectively solving the problem of emergency stop failure. Meanwhile, an emergency stop button is arranged at the output end of a system power supply, when the energy storage system needs emergency stop, if the control unit is out of control and cannot send a correct control signal to the driving unit, the emergency stop button can be directly pressed down, and as the driving unit has an independent power supply loop and is not influenced by the control unit, the driving unit can correctly control the main relay by using the emergency stop button. The delay relay is arranged in the power supply loop of the driving unit to control on-off, when the emergency presses the emergency stop button, the delay relay is disconnected after a few seconds, after the delay relay is disconnected, the coils of the first main relay and the second main relay are deenergized, the delay cutting function can avoid failure adhesion of the two main relays due to load cutting, the safety of a battery cluster can be further protected while the safety of the relay is protected, and the use reliability of the energy storage system is improved.
In one implementation manner, the data volume output interface of the control unit is connected with the input end of the driving unit, specifically:
the first data volume output interface of the control unit is connected with the first input interface of the driving unit;
the second data amount output interface of the control unit is connected with the second input interface of the driving unit.
In one implementation manner, the output end of the driving unit is connected with the first main relay and the second main relay, specifically:
a first output end of the driving unit is connected with the first main relay;
a second output end of the driving unit is connected with the second main relay;
the first main relay and the second main relay are connected with the grounding end of the system power supply.
In one implementation manner, the emergency stop delay circuit of the energy storage system further includes a battery cluster connected with the first main relay and the second main relay, specifically:
the positive electrode of the battery cluster is connected with the first main relay;
the negative electrode of the battery cluster is connected with the second main relay.
In one implementation, the power supply end of the control unit is connected with the output end of the system power supply, and the method further includes: the ground terminal of the control unit is connected with the ground terminal of the system power supply.
In one implementation, the power supply end of the driving unit is connected with the output end of the system power supply through the delay relay, and the method further includes: the ground terminal of the driving unit is connected with the ground terminal of the system power supply.
Drawings
FIG. 1 is a schematic diagram of connection relationship of an emergency stop delay circuit of an energy storage system according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an emergency stop button according to an embodiment of the present utility model;
fig. 3 is a schematic view of contact positions of an emergency stop button according to an embodiment of the present utility model.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
The terms first and second and the like in the description and in the claims and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic diagram of connection relation of an emergency stop delay circuit of an energy storage system according to an embodiment of the present utility model. The embodiment of the utility model provides an emergency stop delay circuit of an energy storage system, which comprises the following components: the system power supply 1, the control unit 21, the driving unit 22, the time delay relay 3, the emergency stop button 4, the first main relay 5, and the second main relay 6 are specifically:
the power supply end Vbb of the control unit 21 is connected with the output end v+ of the system power supply 1;
the power supply end Vbb of the driving unit 22 is connected with the output end v+ of the system power supply through the delay relay 3;
the output end V+ of the system power supply 1 is connected with the emergency stop button 4;
the data output interface of the control unit 21 is connected with the input end of the driving unit 22;
an output terminal of the driving unit 22 is connected to the first main relay 5 and the second main relay 6.
In an embodiment, the ground GND of the control unit 21 is connected to the ground GND of the system power supply 1, and the connection relationship between the control unit 21 and the system power supply 1 forms the first power supply loop 9 for supplying power independently. The ground GND of the driving unit 22 is connected to the ground GND of the system power supply 1, and the connection between the driving unit 22 and the system power supply 1 forms the second power supply loop 10 for supplying power independently. The main control 2 in the energy storage system comprises a control unit 21 and a driving unit 22, wherein the control unit 21 is used for realizing the main control function in the energy storage system, and the driving unit 22 is used for controlling the driving of the main relay. In an embodiment, the data volume output interface of the control unit is connected with the input end of the driving unit, specifically: the first data output interface DO1 of the control unit 21 is connected to the first input interface 221 of the drive unit 22; the second data output interface DO2 of the control unit 21 is connected to the second input interface 222 of the drive unit 22.
In an embodiment, the output end of the driving unit is connected to the first main relay and the second main relay, specifically: the first output OUT1 of the driving unit 22 is connected to the first main relay 5; a second output OUT2 of the driving unit 22 is connected to the second main relay 6; the first main relay 5 and the second main relay 6 are connected to the ground GND of the system power supply 1.
In one embodiment, the emergency stop delay circuit of the energy storage system further includes a battery cluster 7 connected to the first main relay and the second main relay, specifically: the positive electrode of the battery cluster 7 is connected with the first main relay 5; the negative electrode of the battery cluster 7 is connected to the second main relay 6.
Preferably, the second power supply circuit 10 for driving the battery cluster 7, the first main relay 5, and the second main relay 6, and the power supply circuit 9 of the control unit 21 are independent of each other. The first analog output interface DO1 and the second analog output interface DO2 of the control unit are connected to the first input interface 221 and the second input interface 222 of the driving unit, respectively. When the battery cluster 7 is powered up at high voltage, the first main relay 5 and the second main relay 6 need to be closed, and at this time, the control unit outputs control signals 211 and 212 to the driving unit 22 through the first analog output interface DO1 and the second analog output interface DO 2. After receiving the control signals 211 and 212, the driving unit 22 outputs driving signals 223 and 224 to the first main relay 5 and the second main relay 6 through the first output terminal OUT1 and the second output terminal OUT2, the driving signals 223 and 224 enable coils of the first main relay 5 and the second main relay 6, so that main contacts of the two main relays are closed, the battery cluster 7 is electrified at high voltage, the battery cluster 7 is used for connecting an important load in the energy storage system, at the moment, the output terminal 8 of the battery cluster is connected with the load to supply power to the load, and the load content is not shown in the circuit diagram.
As an optimization scheme of the embodiment of the present utility model, the second power supply circuit 10 for driving the battery cluster 7, the first main relay 5 and the second main relay 6 is also controlled to be turned on and off by the delay relay 3. When the time delay relay 3 is in a normally closed state, the second power supply loop 10 is kept closed.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an emergency stop button according to an embodiment of the present utility model, and an emergency stop button 4 according to the present utility model is composed of a button head 41 and a normally open contact module 42. The button head 41 has a mechanical locking function, and when the scram button 4 is pressed, the button head 41 is mechanically locked and kept, and two contacts of the normally open contact module 42 are closed and kept; the button head 41 has a rotary reset function, and in a mechanically locked state, the button head 41 is rotated counterclockwise, the button head 41 is reset, and two contacts of the normally open contact module 42 are opened. Referring to fig. 3, fig. 3 is a schematic view of a contact position of an emergency stop button according to an embodiment of the present utility model. When the emergency stop button 4 is pressed in an emergency, the two contacts 421 and 422 in the normally open contact module 42 are closed and kept in a closed state, the line is turned on, the coil of the delay relay 3 is electrified, the main contacts in the delay relay 3 are turned off after a delay of several seconds, the second power supply circuit 10 is turned off after a delay of several seconds of the main contacts of the delay relay 3, the driving unit 22 stops outputting the driving signals 223 and 224 to the first main relay 5 and the second main relay 6, the coil of the first main relay 5 and the second main relay 6 is deenergized, the main contacts of the two main relays are turned off, and then the electrification to the battery cluster 7 is cut off. Therefore, when the emergency stop button 4 is pressed under emergency conditions, the delay relay 3 does not need an external power supply during the time delay operation, the upper-level main switch can be instantly disconnected, the first main relay 5 and the second main relay 6 can be disconnected after a time delay of a plurality of seconds, so that the two main relays can be protected from invalid adhesion caused by load cut-off, and the safety of a battery cluster is ensured.
The utility model provides an emergency stop delay circuit of an energy storage system, which is characterized in that power supply ends of a control unit and a driving unit are respectively connected with the output end of a system power supply, so that power supply loops of the control unit and the driving unit are mutually independent, a main relay is directly controlled by the driving unit, meanwhile, an emergency stop button is arranged at the output end of the system power supply, when the energy storage system needs emergency stop, if the control unit is out of control and cannot send a correct control signal to the driving unit, the emergency stop button can be directly pressed, and because the driving unit has independent power supply loops and is not influenced by the control unit, the driving unit can correctly control the main relay after receiving the signal of the emergency stop button. The delay relay is arranged in the power supply loop of the driving unit to control on-off, when the emergency presses the emergency stop button, the delay relay is disconnected after a few seconds, after the delay relay is disconnected, the coils of the first main relay and the second main relay are deenergized, the delay cutting function can avoid failure adhesion of the two main relays due to load cutting, the safety of a battery cluster can be further protected while the safety of the relay is protected, and the use reliability of the energy storage system is improved.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (5)
1. An emergency shutdown delay circuit of an energy storage system, comprising: the system power supply, the control unit, the drive unit, the time delay relay, the scram button, the first main relay and the second main relay specifically comprise:
the power supply end of the control unit is connected with the output end of the system power supply;
the power supply end of the driving unit is connected with the output end of the system power supply through the delay relay;
the output end of the system power supply is connected with the emergency stop button;
the data quantity output interface of the control unit is connected with the input end of the driving unit; the first data volume output interface of the control unit is connected with the first input interface of the driving unit; the second data quantity output interface of the control unit is connected with the second input interface of the driving unit;
the output end of the driving unit is connected with the first main relay and the second main relay.
2. The scram delay circuit of an energy storage system of claim 1, wherein the output of said drive unit is connected to said first main relay and said second main relay, in particular:
a first output end of the driving unit is connected with the first main relay;
a second output end of the driving unit is connected with the second main relay;
the first main relay and the second main relay are connected with the grounding end of the system power supply.
3. The emergency stop delay circuit of an energy storage system of claim 1, further comprising a battery cluster connected to the first main relay and the second main relay, in particular:
the positive electrode of the battery cluster is connected with the first main relay;
the negative electrode of the battery cluster is connected with the second main relay.
4. The scram delay circuit of claim 1, wherein the power supply terminal of said control unit is connected to the output terminal of said system power supply, further comprising: the ground terminal of the control unit is connected with the ground terminal of the system power supply.
5. The scram delay circuit of claim 1, wherein the power supply terminal of said drive unit is connected to the output terminal of said system power supply via said delay relay, further comprising: the ground terminal of the driving unit is connected with the ground terminal of the system power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223408391.XU CN219592109U (en) | 2022-12-16 | 2022-12-16 | Scram delay circuit of energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223408391.XU CN219592109U (en) | 2022-12-16 | 2022-12-16 | Scram delay circuit of energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219592109U true CN219592109U (en) | 2023-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223408391.XU Active CN219592109U (en) | 2022-12-16 | 2022-12-16 | Scram delay circuit of energy storage system |
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| Country | Link |
|---|---|
| CN (1) | CN219592109U (en) |
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2022
- 2022-12-16 CN CN202223408391.XU patent/CN219592109U/en active Active
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