Signal transmission system and method of energy storage system

Abstract

The invention provides a signal transmission system and method of an energy storage system, and relates to the technical field of energy storage. The signal transmission system comprises a monitoring device, a first power supply module and a plurality of first isolation switch units which are arranged at a first end of the energy storage system, and a second power supply module, a plurality of second isolation switch units and a transmission terminal which are arranged at a second end of the energy storage system, a signal output end of the monitoring device is connected with a control end of the first power supply module, the first power supply module is connected with power supply ends of the plurality of first isolation switch units, and a first signal end of each first isolation switch unit is connected with a transmission cable of the second power supply module at a first end. The second signal ends of the plurality of first isolation switch units are respectively connected with the power supply ends of the plurality of second isolation switch units at the second end through a plurality of groups of transmission cables, and the signal ends of the plurality of second isolation switch units are connected with the transmission terminal. Therefore, signals are transmitted stably and accurately, and the construction cost and the operation and maintenance cost are reduced.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a signal transmission system and method for an energy storage system. Background Art

[0002] In the current energy storage application scenario, energy storage systems communicate with the outside world over short distances mostly through serial communication methods such as CAN and RS485, and important signals are generally transmitted using dry contact wires.

[0003] However, in large-scale megawatt-level stations, the energy storage container and the transmission terminal are generally several hundred meters away, and there are many complex interference sources in the environment, which can cause electromagnetic interference. In long-distance signal transmission, the electromagnetic interference of the interference source will affect the data transmission of serial communication, resulting in communication problems such as data loss, abnormality, and even loss of connection. As the transmission distance increases, the dry contact signal transmission method will cause poor data transmission accuracy due to the weakening of the transmission signal.

[0004] Therefore, there is an urgent need for a method with high transmission accuracy and suitable for long-distance transmission of energy storage systems. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the above-mentioned prior art and provide a signal transmission system and method for an energy storage system to solve the problems of inaccurate signal transmission and high cost in the prior art.

[0006] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0007] In a first aspect, an embodiment of the present application provides a signal transmission system of an energy storage system, the signal transmission system comprising: a monitoring device, a first power module, and a plurality of first isolating switch units arranged at a first end of the energy storage system, a second power module, a plurality of second isolating switch units, and a transmission terminal arranged at a second end of the energy storage system; wherein a first distance between the first end and the transmission terminal is greater than a second distance between the second end and the transmission terminal;

[0008] The signal output end of the monitoring device is connected to the control end of the first power module, the first power module is connected to the power ends of multiple first isolating switch units, the first signal end of the first isolating switch unit is connected to the transmission cable of the second power module at the first end, the second signal ends of multiple first isolating switch units are respectively connected to the power ends of multiple second isolating switch units at the second end through multiple groups of transmission cables, and the signal ends of multiple second isolating switch units are connected to the transmission terminal.

[0009] Optionally, the sampling end of the monitoring device is connected to a transmission cable of the second power module at the first end.

[0010] Optionally, the two first signal terminals of the first isolating switch unit are respectively connected to a positive transmission cable and a negative transmission cable of the second power module at the first terminal;

[0011] The two second signal terminals of the first isolating switch unit are respectively connected to a positive power supply terminal and a negative power supply terminal of a second isolating switch unit through a positive transmission cable and a negative transmission cable in a group of transmission cables.

[0012] Optionally, the first isolating switch unit and the second isolating switch unit are respectively a first relay and a second relay;

[0013] The coil connection terminal of the first relay is the power supply terminal of the first isolating switch unit, the first contact of the two groups of contacts of the first relay is the two first signal terminals of the first isolating switch unit, and the second contact of the two groups of contacts of the first relay is the two second signal terminals of the first isolating switch unit;

[0014] The coil connection terminal of the second relay is the power supply terminal of the second isolating switch unit, and the two contacts of the second relay are the signal terminals of the second isolating switch unit.

[0015] Optionally, the first isolating switch unit and the second isolating switch unit are respectively a first photoelectric coupler and a second photoelectric coupler;

[0016] The anode and cathode of the light emitting diode of the first photocoupler are the power supply terminals of the first isolating switch unit, the collectors of the two phototransistors of the first photocoupler are the two first signal terminals of the first isolating switch unit, and the emitters of the two phototransistors of the first photocoupler are the two second signal terminals of the first isolating switch unit;

[0017] The anode and cathode of the light emitting diode of the second photocoupler are the power supply terminals of the second isolating switch unit, and the collector and emitter of the phototransistor of the second photocoupler are the signal terminals of the second isolating switch unit.

[0018] Optionally, the monitoring device is also connected to security equipment in the energy storage system.

[0019] Optionally, the security equipment is fire-fighting equipment.

[0020] In a second aspect, an embodiment of the present application provides a signal transmission method for an energy storage system, which is applied to the signal transmission system of the energy storage system described in any one of the first aspects above, and the method includes:

[0021] The monitoring device in the signal transmission system obtains the monitoring signal of the energy storage system;

[0022] The monitoring device generates a transmission control signal according to the monitoring signal;

[0023] The monitoring device controls the first power supply module to supply power to a plurality of first isolating switch units disposed at the first end of the energy storage system according to the transmission control signal, so that the plurality of first isolating switch units perform on-off response actions;

[0024] The plurality of first isolating switch units perform on-off response actions, and the plurality of second isolating switch units are powered on and off, so that the plurality of second isolating switch units perform on-off response actions;

[0025] The transmission terminal in the signal transmission system obtains the monitoring signal based on the on-off response actions performed by the multiple second isolation switch units.

[0026] Optionally, the method further comprises:

[0027] The monitoring device obtains a voltage monitoring signal of a second power supply module at the second end;

[0028] Voltage alarm information is generated according to the voltage monitoring signal.

[0029] Optionally, the monitoring device in the signal transmission system acquires the monitoring signal of the energy storage system, including:

[0030] The monitoring device obtains a security monitoring action signal of a security device in the energy storage system;

[0031] The monitoring device generates a transmission control signal according to the monitoring signal, including:

[0032] The monitoring device generates a security control signal according to the security monitoring action signal.

[0033] Compared with the prior art, this application has the following beneficial effects:

[0034] The present application provides a signal transmission system and method for an energy storage system. The signal transmission system includes: a monitoring device, a first power module and a plurality of first isolating switch units arranged at the first end of the energy storage system, a second power module, a plurality of second isolating switch units and a transmission terminal arranged at the second end of the energy storage system; wherein the first distance between the first end and the transmission terminal is greater than the second distance between the second end and the transmission terminal; the signal output end of the monitoring device is connected to the control end of the first power module, the first power module is connected to the power supply end of the plurality of first isolating switch units, the first signal end of the first isolating switch unit is connected to the transmission cable of the second power module at the first end, the second signal ends of the plurality of first isolating switch units are respectively connected to the power supply ends of the plurality of second isolating switch units at the second end through a plurality of transmission cables, and the signal ends of the plurality of second isolating switch units are connected to the transmission terminal. Thus, long-distance signal transmission is realized through the on / off of the electrical signal of the circuit structure, which is not easily affected by environmental electromagnetic interference, and can stably and accurately transmit signals; the adjustable DC power supply can be flexibly adjusted to adapt to long-distance transmission signals; the circuit structure is simple, which reduces the construction cost, and even if the signal transmission is interrupted, it is convenient to accurately determine the location of the problem, which is convenient for maintenance and reduces the operation and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A schematic diagram of the structure of a signal transmission system of an energy storage system provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the structure of a signal transmission system of another energy storage system provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of a flow chart of a signal transmission method for an energy storage system provided in an embodiment of the present application;

[0039] Figure 4 A schematic flow chart of a voltage monitoring method for a second power supply module provided in an embodiment of the present application;

[0040] Figure 5 A schematic flow chart of another signal transmission method for an energy storage system provided in an embodiment of the present application.

[0041] Icons: 1- monitoring device, 2- first power module, 3- first isolating switch unit, 4- second power module, 5- second isolating switch unit, 6- transmission terminal, 7- transmission cable. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0046] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0047] The signal transmission system of an energy storage system provided in the present application is explained through a specific example as follows.

[0048] Figure 1 A schematic diagram of the structure of a signal transmission system of an energy storage system provided in an embodiment of the present application. Figure 1 As shown, the signal transmission system includes: a monitoring device 1, a first power module 2 and a plurality of first isolating switch units 3 arranged at the first end of the energy storage system, a second power module 4, a plurality of second isolating switch units 5 and a transmission terminal 6 arranged at the second end of the energy storage system.

[0049] The first distance between the first end and the transmission terminal 6 is greater than the second distance between the second end and the transmission terminal 6. The second end is closer to the transmission terminal 6.

[0050] The signal output end of the monitoring device 1 is connected to the control end of the first power module 2, the first power module 2 is connected to the power end of the plurality of first isolating switch units 3, the first signal end of the first isolating switch unit 3 is connected to the transmission cable of the second power module 4 at the first end, the second signal ends of the plurality of first isolating switch units 3 are respectively connected to the power ends of the plurality of second isolating switch units 5 at the second end through a plurality of transmission cables 7, and the signal ends of the plurality of second isolating switch units 5 are connected to the transmission terminal 6. Among them, the number of the first isolating switch units 3, the number of the second isolating switch units 5 and the number of the transmission terminals 6 are the same, and the number of the three is at least one, and each transmission circuit corresponding to the transmission terminal 6 requires a first isolating switch unit 3 and a second isolating switch unit 5.

[0051] In the energy storage system, the battery prefabricated cabin is often far away from the transmission terminal 6. In the signal transmission system provided in the present application, the second power module 4 continuously supplies power, so that the passage of the first isolation switch unit 3 and the power supply end of the second isolation switch unit 5 are powered.

[0052] The monitoring device 1 is a device with computing and processing functions. When the battery prefabricated cabin (first end) has an important signal that needs to be transmitted to the second end, the monitoring device 1 controls the opening / closing of the first power module 2, thereby controlling the on / off of the first isolating switch unit 3. When the first isolating switch unit 3 is turned on, there is power at the power supply end of the second isolating switch unit 5, and the second isolating switch unit 5 is turned on. The transmission terminal 6 can detect that the second isolating switch unit 5 is turned on through the signal end of the second isolating switch unit 5. When the first isolating switch unit 3 is turned off, there is no power at the power supply end of the second isolating switch unit 5, and the second isolating switch unit 5 is turned off. The transmission terminal 6 can detect that the second isolating switch unit 5 is turned off through the signal end of the second isolating switch unit 5. Furthermore, the monitoring device 1 controls the first power module 2 to control the first isolating switch unit 3 and the second isolating switch unit 5. By controlling the first isolating switch unit 3 and the second isolating switch unit 5 to be turned off, the signal of the energy storage system is transmitted to the transmission terminal 6, and the signal to be transmitted is represented by the turn-off response of the first isolating switch unit 3 and the second isolating switch unit 5.

[0053] For example, the starting voltages of the first isolating switch unit 3 and the second isolating switch unit 5 are both 24V, and the first power module 2 is a 24V power supply. The output voltage of the second power module 4 is 24V+cable voltage drop value, and the cable voltage drop value is the measured value of on-site debugging, which is specifically determined according to the on-site cable to ensure that the second isolating switch unit 5 can receive a 24V voltage. In actual energy storage scenarios, when the second end is in different positions, multiple sets of second isolating switch units 5 can be used to compensate for the cable voltage drop.

[0054] The first end is equipped with a monitoring device 1 and a first power module 2, which can be regarded as the local end. The second end is equipped with a second power module 4 and a transmission terminal 6, which can be regarded as the remote end. The distance between the first end and the second end is at least 100 meters, for example, the distance between the first end and the second end is greater than or equal to 100 meters.

[0055] In the signal transmission system provided in the present application, long-distance signal transmission is achieved by turning on / off the electrical signal of the circuit structure. Compared with the communication anomalies and even loss of connection in long-distance transmission caused by the existing communication technology, the circuit structure can transmit signals only by "whether current is detected", which is not easily affected by environmental electromagnetic interference and can transmit signals stably and accurately; the adjustable DC power supply can be flexibly adjusted to adapt to signal transmission over different distances; the circuit structure is simple, which reduces the construction cost. Even if the signal transmission is interrupted, it is easy to accurately determine the location of the problem, which is convenient for maintenance and reduces the operation and maintenance cost.

[0056] In summary, in this embodiment, the signal transmission system includes: a monitoring device, a first power module and a plurality of first isolating switch units arranged at the first end of the energy storage system, a second power module, a plurality of second isolating switch units and a transmission terminal arranged at the second end of the energy storage system; wherein the first distance between the first end and the transmission terminal is greater than the second distance between the second end and the transmission terminal; the signal output end of the monitoring device is connected to the control end of the first power module, the first power module is connected to the power supply end of the plurality of first isolating switch units, the first signal end of the first isolating switch unit is connected to the transmission cable of the second power module at the first end, the second signal ends of the plurality of first isolating switch units are respectively connected to the power supply ends of the plurality of second isolating switch units at the second end through a plurality of transmission cables, and the signal ends of the plurality of second isolating switch units are connected to the transmission terminal. Thus, long-distance signal transmission is realized by transmitting electric signals through the on / off of the electric signals of the circuit structure, which is not easily affected by environmental electromagnetic interference, and can stably and accurately transmit signals; the adjustable DC power supply can be flexibly adjusted to adapt to long-distance transmission signals; the circuit structure is simple, which reduces the construction cost, and even if the signal transmission is interrupted, it is convenient to accurately determine the location of the problem, which is convenient for maintenance and reduces the operation and maintenance cost.

[0057] In the above Figure 1 On the basis of the corresponding embodiments, the embodiments of the present application also provide another signal transmission system for an energy storage system. Figure 2 A schematic diagram of the structure of a signal transmission system of another energy storage system provided in an embodiment of the present application.

[0058] like Figure 2 As shown, the sampling end of the monitoring device 1 is connected to the transmission cable 7 of the second power module 4 at the first end.

[0059] The monitoring device 1 collects the electrical signal of the transmission cable 7, and by analyzing and judging the collected electrical signal, the voltage state of the second power module 4 can be determined. For example, the second power module 4 is disconnected, the voltage is too high, or the voltage is too low. Thus, the voltage state of the second power module 4 can be accurately known, and real-time monitoring is performed to facilitate maintenance, avoid voltage instability during signal transmission and cause incorrect signal reception, ensure true and reliable signal transmission, and improve signal transmission accuracy.

[0060] In summary, in this embodiment, the sampling end of the monitoring device is connected to the transmission cable of the second power module at the first end. Thus, the voltage state can be accurately known, real-time monitoring can be performed, maintenance can be facilitated, and signal reception errors caused by unstable voltage during signal transmission can be avoided, thus ensuring that the signal transmission is true and reliable and improving the accuracy of signal transmission.

[0061] Further, continue to refer to Figure 1 In another embodiment of the present application, the two first signal terminals of the first isolating switch unit 3 are respectively connected to the positive transmission cable and the negative transmission cable at the first end of the second power module 4 .

[0062] The two second signal terminals of the first isolating switch unit 3 are respectively connected to the positive power supply terminal and the negative power supply terminal of a second isolating switch unit 5 through a positive transmission cable and a negative transmission cable in a group of transmission cables.

[0063] The first isolating switch unit 3 is a double-pole single-throw switch, which includes, in addition to a power supply terminal, two first signal terminals and two second signal terminals.

[0064] The positive and negative terminals of the second power module 4, the two first signal terminals, the two second signal terminals of the first isolation switch unit 3, and the power terminal of the second isolation switch unit 5 form a loop through the transmission cable 7, so that the on / off signal of the loop can be used to transmit signals. Thus, the signal transmission accuracy is improved.

[0065] In summary, in this embodiment, the two first signal terminals of the first isolating switch unit are respectively connected to the positive transmission cable and the negative transmission cable of the second power module at the first end; the two second signal terminals of the first isolating switch unit are respectively connected to the positive power supply terminal and the negative power supply terminal of a second isolating switch unit through the positive transmission cable and the negative transmission cable in a group of transmission cables. Thus, the signal transmission accuracy is improved.

[0066] Further, continue to refer to Figure 1 In another embodiment of the present application, the first isolating switch unit 3 and the second isolating switch unit 5 are respectively a first relay and a second relay.

[0067] The coil connection terminal of the first relay is the power supply terminal of the first isolating switch unit 3, the first contact of the two sets of contacts of the first relay is the two first signal terminals of the first isolating switch unit 3, and the second contact of the two sets of contacts of the first relay is the two second signal terminals of the first isolating switch unit 3.

[0068] The coil connection terminal of the second relay is the power supply terminal of the second isolating switch unit 5 , and the two contacts of the second relay are the signal terminals of the second isolating switch unit 5 .

[0069] Further, continue to refer to Figure 1 In another embodiment of the present application, the first isolating switch unit 3 and the second isolating switch unit 5 are respectively a first photoelectric coupler and a second photoelectric coupler.

[0070] The anode and cathode of the light-emitting diode of the first photocoupler are the power supply terminals of the first isolating switch unit 3, the collectors of the two phototransistors of the first photocoupler are the two first signal terminals of the first isolating switch unit 3, and the emitters of the two phototransistors of the first photocoupler are the two second signal terminals of the first isolating switch unit.

[0071] The anode and cathode of the light emitting diode of the second photocoupler are the power supply terminals of the second isolating switch unit 5 , and the collector and emitter of the phototransistor of the second photocoupler are the signal terminals of the second isolating switch unit 5 .

[0072] Further, continue to refer to Figure 1 In another embodiment of the present application, the monitoring device 1 is also connected to the security equipment in the energy storage system.

[0073] The monitoring device 1 collects signals from security equipment and transmits the collected signals to the transmission terminal 6 using the signal transmission system provided in the present application.

[0074] For example, the monitoring device 1 is also connected to other devices in the energy storage system to transmit the collected signals of other devices to the transmission terminal 6 .

[0075] Further, continue to refer to Figure 1 In another embodiment of the present application, the security equipment is fire-fighting equipment.

[0076] For example, the signal collected by the monitoring device 1 from the fire-fighting equipment is: the fire-fighting equipment recognizes the spraying of perfluorohexanone.

[0077] In the above Figure 1-Figure 2 On the basis of the corresponding embodiments, the embodiments of the present application further provide a signal transmission method for an energy storage system. Figure 3 A schematic diagram of a signal transmission method for an energy storage system provided in an embodiment of the present application. Figure 3 As shown, the method includes:

[0078] S101. A monitoring device in a signal transmission system obtains a monitoring signal of an energy storage system.

[0079] The monitoring device monitors the energy storage system in real time, and after acquiring the monitoring signal of the energy storage system, transmits the monitoring signal to the transmission terminal at the second end.

[0080] S102: The monitoring device generates a transmission control signal according to the monitoring signal.

[0081] The monitoring signal is a preset text signal, and the transmission control signal is a binary code 01. Converting the monitoring signal into a binary transmission control signal facilitates control and signal transmission.

[0082] S103: The monitoring device controls the first power supply module to supply power to a plurality of first isolating switch units disposed at the first end of the energy storage system according to the transmission control signal, so that the plurality of first isolating switch units perform on-off response actions.

[0083] When the transmission control signal is 1, the first power module is controlled to supply power to the multiple first isolating switch units arranged at the first end of the energy storage system, and the first isolating switch units are turned on; when the transmission control signal is 0, the first power module is controlled to suspend supplying power to the multiple first isolating switch units, and the first isolating switch units are turned off. Thus, according to the binary transmission control signal, the first isolating switch units are controlled to be turned on / off, and the monitoring signal is represented by the first isolating switch units being turned on / off.

[0084] S104, performing on-off response actions through the plurality of first isolating switch units, and controlling power supply to the plurality of second isolating switch units, so that the plurality of second isolating switch units perform on-off response actions.

[0085] When the first isolating switch unit is turned on, the corresponding second isolating switch unit is turned on; when the first isolating switch unit is turned off, the corresponding second isolating switch unit is turned off. Thus, the second isolating switch unit is controlled to be turned on / off by the first isolating switch unit, and the monitoring signal is represented by the on / off of the second isolating switch unit.

[0086] S105. The transmission terminal in the signal transmission system obtains a monitoring signal based on the on-off response actions performed by the plurality of second isolating switch units.

[0087] The transmission terminal obtains the signal that the second isolating switch unit is turned on, that is, receives a binary 1 code; the transmission terminal obtains the signal that the second isolating switch unit is turned off, that is, receives a binary 0 code. Then, through the on-off response action performed by the second isolating switch unit, the binary code corresponding to the monitoring signal is obtained to obtain the monitoring signal.

[0088] Furthermore, in order to obtain the monitoring signal more accurately, when the monitoring device generates the binary code corresponding to the monitoring signal, it adds a start mark and an end mark before and after the binary code to facilitate acquisition by the transmission terminal.

[0089] In the signal transmission method provided in the present application, the circuit structure has a high setting stability, does not require wireless communication, is not easily affected by the external environment, can transmit signals stably and accurately, reduces construction costs, and even if signal transmission is interrupted, it is easy to accurately determine the problem, facilitate maintenance, and reduce operation and maintenance costs.

[0090] In summary, in this embodiment, the monitoring device in the signal transmission system obtains the monitoring signal of the energy storage system; the monitoring device generates a transmission control signal according to the monitoring signal; the monitoring device controls the first power supply module to supply power to multiple first isolating switch units arranged at the first end of the energy storage system according to the transmission control signal, so that multiple first isolating switch units perform on-off response actions; through multiple first isolating switch units performing on-off response actions, multiple second isolating switch units are powered on and off, so that multiple second isolating switch units perform on-off response actions; the transmission terminal in the signal transmission system obtains the monitoring signal based on the on-off response actions performed by multiple second isolating switch units. Thus, the signal is transmitted stably and accurately, the construction cost is reduced, and even if the signal transmission is interrupted, it is convenient to accurately determine the problem, which is convenient for maintenance and reduces the operation and maintenance cost.

[0091] In the above Figure 3 On the basis of the corresponding embodiment, the embodiment of the present application also provides a voltage monitoring method for a second power supply module. Figure 4 A schematic diagram of a flow chart of a voltage monitoring method of a second power module provided in an embodiment of the present application. Figure 4 As shown, the method also includes:

[0092] S201. A monitoring device obtains a voltage monitoring signal of a second power supply module at a second end.

[0093] The voltage monitoring signal includes a measured voltage value.

[0094] S202: Generate voltage alarm information according to the voltage monitoring signal.

[0095] If the measured voltage value is 0, it is determined that the second power module is disconnected, and a power disconnection alarm message is generated and reported. If the measured voltage value is greater than 0 and less than the first threshold, it is determined that the voltage of the second power module is too low, and a voltage too low alarm message is generated and reported. If the measured voltage value is greater than the second threshold, it is determined that the voltage of the second power module is too high, and a voltage too high alarm message is generated and reported.

[0096] In summary, in this embodiment, the monitoring device obtains the voltage monitoring signal of the second power module at the second end, and generates voltage alarm information according to the voltage monitoring signal, thereby accurately implementing the voltage monitoring of the second power module.

[0097] In the above Figure 3 On the basis of the corresponding embodiments, the embodiments of the present application also provide another signal transmission method for an energy storage system. Figure 5 A schematic diagram of a flow chart of another signal transmission method for an energy storage system provided in an embodiment of the present application. Figure 5 As shown, the monitoring device in the signal transmission system in S101 obtains the monitoring signal of the energy storage system, including:

[0098] S301. The monitoring device obtains a security monitoring action signal of a security device in the energy storage system.

[0099] For example, the security equipment is fire-fighting equipment, and the security monitoring action signal is: the fire-fighting equipment recognizes the spraying of perfluorohexanone.

[0100] The monitoring device in S102 generates a transmission control signal according to the monitoring signal, including:

[0101] S302: The monitoring device generates a security control signal according to the security monitoring action signal.

[0102] The monitoring device generates a binary security control signal according to the security monitoring action signal for transmission to the transmission terminal.

[0103] In summary, in this embodiment, the monitoring device obtains the security monitoring action signal of the security equipment in the energy storage system, and the monitoring device generates a security control signal according to the security monitoring action signal, thereby accurately transmitting the security control signal.

[0104] In the embodiment of the present application, the monitoring device and the transmission terminal are both devices with computing and processing functions, and the devices include: a processor and a storage medium. The processor and the storage medium are connected via a bus.

[0105] The storage medium is used to store the program, and the processor calls the program stored in the storage medium to execute the above method embodiment. The specific implementation method and technical effect are similar and will not be repeated here.

[0106] Optionally, the present invention also provides a program product, such as a computer-readable storage medium, comprising a program, which is used to execute the above method embodiment when executed by a processor.

[0107] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0108] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0109] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0110] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random Access Memory, abbreviated: RAM), disk or optical disk and other media that can store program codes.

Claims

1. A signal transmission system for an energy storage system, characterized in that: The signal transmission system comprises: a monitoring device, a first power module and a plurality of first isolating switch units arranged at a first end of the energy storage system, a second power module, a plurality of second isolating switch units and a transmission terminal arranged at a second end of the energy storage system; wherein a first distance between the first end and the transmission terminal is greater than a second distance between the second end and the transmission terminal; The signal output end of the monitoring device is connected to the control end of the first power module, the first power module is connected to the power ends of multiple first isolating switch units, the first signal end of the first isolating switch unit is connected to the transmission cable of the second power module at the first end, the second signal ends of multiple first isolating switch units are respectively connected to the power ends of multiple second isolating switch units at the second end through multiple groups of transmission cables, and the signal ends of multiple second isolating switch units are connected to the transmission terminal.

2. The signal transmission system according to claim 1, characterized in that: The sampling end of the monitoring device is connected to the transmission cable of the second power module at the first end.

3. The signal transmission system according to claim 1, characterized in that: The two first signal terminals of the first isolating switch unit are respectively connected to the positive transmission cable and the negative transmission cable of the second power module at the first terminal; The two second signal terminals of the first isolating switch unit are respectively connected to a positive power supply terminal and a negative power supply terminal of a second isolating switch unit through a positive transmission cable and a negative transmission cable in a group of transmission cables.

4. The signal transmission system according to claim 3, characterized in that: The first isolating switch unit and the second isolating switch unit are respectively a first relay and a second relay; The coil connection terminal of the first relay is the power supply terminal of the first isolating switch unit, the first contact of the two groups of contacts of the first relay is the two first signal terminals of the first isolating switch unit, and the second contact of the two groups of contacts of the first relay is the two second signal terminals of the first isolating switch unit; The coil connection terminal of the second relay is the power supply terminal of the second isolating switch unit, and the two contacts of the second relay are the signal terminals of the second isolating switch unit.

5. The signal transmission system according to claim 3, characterized in that: The first isolating switch unit and the second isolating switch unit are respectively a first photoelectric coupler and a second photoelectric coupler; The anode and cathode of the light emitting diode of the first photocoupler are the power supply terminals of the first isolating switch unit, the collectors of the two phototransistors of the first photocoupler are the two first signal terminals of the first isolating switch unit, and the emitters of the two phototransistors of the first photocoupler are the two second signal terminals of the first isolating switch unit; The anode and cathode of the light emitting diode of the second photocoupler are the power supply terminals of the second isolating switch unit, and the collector and emitter of the phototransistor of the second photocoupler are the signal terminals of the second isolating switch unit.

6. The signal transmission system according to claim 1, characterized in that: The monitoring device is also connected to the security equipment in the energy storage system.

7. The signal transmission system according to claim 6, characterized in that: The security equipment is fire-fighting equipment.

8. A signal transmission method for an energy storage system, characterized in that: A signal transmission system for an energy storage system according to any one of claims 1 to 7, the method comprising: The monitoring device in the signal transmission system obtains the monitoring signal of the energy storage system; The monitoring device generates a transmission control signal according to the monitoring signal; The monitoring device controls the first power supply module to supply power to a plurality of first isolating switch units disposed at the first end of the energy storage system according to the transmission control signal, so that the plurality of first isolating switch units perform on-off response actions; The plurality of first isolating switch units perform on-off response actions, and the plurality of second isolating switch units are powered on and off, so that the plurality of second isolating switch units perform on-off response actions; The transmission terminal in the signal transmission system obtains the monitoring signal based on the on-off response actions performed by the multiple second isolation switch units.

9. The method according to claim 8, characterized in that The method further comprises: The monitoring device obtains a voltage monitoring signal of a second power supply module at the second end; Voltage alarm information is generated according to the voltage monitoring signal.

10. The method according to claim 8, characterized in that The monitoring device in the signal transmission system obtains the monitoring signal of the energy storage system, including: The monitoring device obtains a security monitoring action signal of a security device in the energy storage system; The monitoring device generates a transmission control signal according to the monitoring signal, including: The monitoring device generates a security control signal according to the security monitoring action signal.

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