Railway ferry mobile energy storage power station intelligent fire extinguishing system

Abstract

The utility model discloses railway ferry mobile energy storage power station intelligence fire control system belongs to railway ferry energy storage technical field, including power module, MCU, temperature alarm unit, grading alarm unit, relay K4, relay K5, diode D5 and diode D6, the technical problem of supporting manual and automatic double control of the hierarchical response of hardware circuit implementation has been solved, the battery group is detected in groups to the multiple temperature alarm module, and the working temperature of every battery in the battery group is detected accurately, and the fire hazard is greatly reduced, the utility model discloses having grading alarm function, can carry out grading alarm according to the signal of temperature and smoke, the utility model discloses having manual / automatic double -path control, has improved the reliability of fire control system.

Description

Technical Field

[0001] This utility model belongs to the field of railway ferry energy storage technology, and in particular relates to an intelligent fire protection system for railway ferry mobile energy storage power stations. Background Technology

[0002] With the widespread application of energy storage systems in mobile transportation scenarios such as railways and ferries, their high energy density and high integration characteristics bring significant energy advantages, but also bring higher fire risks. Energy storage battery compartments are extremely prone to thermal runaway or even combustion accidents when exposed to external high temperatures, electric arcs, short circuits, internal faults, gas leaks, etc.

[0003] Currently, most mainstream energy storage fire protection systems in the industry rely on centralized software judgment and CAN communication for logical control. On the one hand, this software logic that depends on a central controller is prone to communication delays and system failures; on the other hand, most systems only have single-level alarm triggering capabilities, which cannot provide effective early warning, zone isolation, and manual intervention control when risks occur in the early stages. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent fire protection system for mobile energy storage power stations on railway ferries, which solves the technical problem of achieving graded response through hardware circuits and supporting both manual and automatic control.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The intelligent fire protection system for the railway ferry mobile energy storage power station includes a power module, MCU, temperature alarm unit, graded alarm unit, relay K4, relay K5, diode D5 and diode D6. The temperature alarm unit is connected to the MCU, the graded alarm unit is connected to the temperature alarm unit, and the coil terminal of relay K4 is connected to the MCU. The power supply module provides power to the power supply module, MCU, temperature alarm unit, graded alarm unit, relay K4, relay K5, diode D5 and diode D6; One end of the manual switch is connected to the power module, and the other end is connected to the positive terminal of diode D5. The negative terminal of diode D5 drives the coil of relay K5. The common contact of relay K4 is connected to the power module, and the normally open contact drives the coil of relay K5; Relay K5 is used to drive external fire-fighting equipment.

[0006] Preferably, the temperature alarm unit includes temperature alarm module A, temperature alarm module B, temperature alarm module C, temperature alarm module D, diode D1, diode D2, diode D3 and diode D4; The graded alarm unit includes relay K3, smoke detector, relay K1, relay K2, alarm light L1, alarm light L2, and voltage divider circuit; The first output terminals of temperature alarm module A, temperature alarm module B, temperature alarm module C, and temperature alarm module D are respectively connected to different digital input interfaces of the MCU. The second output terminals of temperature alarm module A, temperature alarm module B, temperature alarm module C, and temperature alarm module D are respectively connected to the coil terminal of relay K3 through diodes D1, D2, D3, and D4. The common contact of relay K3 is connected to the power module, and the normally open contact is connected to the coil terminal of relay K1 and pin 1 of the smoke alarm, respectively. Pin 2 of the smoke alarm is connected to the coil terminal of relay K2. Relays K1 and K2 drive alarm lights LED1 and LED2 respectively; Pin 2 of the smoke detector is also connected to a digital input interface of the MCU via a voltage divider circuit.

[0007] Preferably, the temperature alarm module A includes a comparator IC1, a resistor R9, a temperature sensor RT1, resistors R10, R11, and R12, a transistor Q5, a resistor R13, a resistor R14, and a field-effect transistor Q6. One end of the resistor R9 is connected to the power supply module, and the other end is connected to the ground wire through the temperature sensor RT1. The connection node between the resistor R9 and the temperature sensor RT1 is also connected to the positive input terminal of the comparator IC1. One end of resistor R10 is connected to the power module, and the other end is connected to the ground wire through resistor R11. The connection node of resistor R10 and resistor R11 is also connected to the negative input terminal of comparator IC1. The output of the price comparison IC1 is connected to the base of transistor Q5 through resistor R12. The collector of transistor Q5 is connected to the power module, and the emitter is connected to the ground through resistor R13. The emitter of transistor Q5 is also connected to the gate of field-effect transistor Q6 through resistor R4. The drain of field-effect transistor Q6 is connected to the power module, and the source is connected to the positive terminal of diode D1. The negative terminal of diode D1 outputs the OUT1 drive signal, which is connected to and drives the coil terminal of relay K3. The circuit structure principle of temperature alarm module B, temperature alarm module C and temperature alarm module D is the same as that of temperature alarm module A.

[0008] Preferably, the graded alarm unit specifically includes resistor R16, resistor R15, relay K3, relay K1, resistor R18, resistor R17, alarm light LED1, smoke detector MK, resistor R22, resistor R21, resistor R19, resistor R20, relay K2 and alarm light LED2. One end of the coil of relay K3 is connected to the negative terminals of diodes D1, D2, D3 and D4 respectively through resistor R16, and the other end of the coil of relay K3 is connected to ground. The common contact of relay K3 is connected to the power module through resistor R15, and the normally open contact is connected to pin 1 of smoke alarm MK. The normally open contact of relay K3 is also connected to one end of the coil of relay K1 through resistor R18, and the other end of the coil of relay K1 is connected to the ground wire. The common contact of relay K1 is connected to the power module through resistor R17, the normally open contact is connected to the positive terminal of alarm light LED1, and the negative terminal of alarm light LED1 is connected to the ground wire. Pin 2 of the smoke alarm MK is connected to one end of the coil of relay K2 through resistor R21, and the other end of the coil of relay K2 is connected to ground. The common contact of relay K2 is connected to the power module through resistor R22, the normally open contact is connected to the positive terminal of alarm light LED2, and the negative terminal of alarm light LED2 is connected to the ground wire; Pin 2 of the smoke alarm MK is also connected to the ground wire via resistors R19 and R20 connected in series. The connection point of resistors R19 and R20 is also connected to a digital input interface of the MCU.

[0009] Preferably, one end of the coil of relay K4 is connected to a digital output interface of the MCU through resistor R25, and the other end is connected to ground. The common contact of relay K4 is connected to the power module through resistor R23, the normally open contact is connected to the positive terminal of diode D6, and the negative terminal of diode D6 is connected to one end of the coil of relay K5. The manual switch is switch SW. One end of switch SW is connected to the power module through resistor R24, and the other end is connected to the positive terminal of diode D5. The negative terminal of diode D5 is connected to the negative terminal of diode D6. Capacitor C10 is the filter capacitor of switch SW. The normally open contacts and common contacts of relay K5 drive external fire-fighting equipment.

[0010] The intelligent fire protection system for the railway ferry mobile energy storage power station described in this utility model solves the technical problem of achieving graded response through hardware circuitry and supporting both manual and automatic control. This invention uses multiple temperature alarm modules to group and detect the battery pack, accurately detecting the operating temperature of each battery in the pack, greatly reducing fire hazards. This utility model features a graded alarm function, which can trigger alarms based on temperature and smoke signals. This utility model also features manual / automatic dual-path control, improving the reliability of the fire protection system. Attached Figure Description

[0011] Figure 1This is a schematic diagram of the system architecture of this utility model; Figure 2 This is a schematic diagram of the present invention. Figure 3 This is the circuit diagram of the temperature alarm module A of this utility model; Figure 4 This is the circuit diagram of the graded alarm unit of this utility model; Figure 5 This is the circuit diagram of relays K4 and K5 of this utility model. Detailed Implementation

[0012] Depend on Figures 1-5 The intelligent fire protection system of the railway ferry mobile energy storage power station shown includes a power module, MCU, temperature alarm unit, hierarchical alarm unit, relay K4, relay K5, diode D5 and diode D6. The temperature alarm unit is connected to the MCU, the hierarchical alarm unit is connected to the temperature alarm unit, and the coil terminal of relay K4 is connected to the MCU. The temperature alarm unit includes temperature alarm module A, temperature alarm module B, temperature alarm module C, temperature alarm module D, diode D1, diode D2, diode D3 and diode D4; The graded alarm unit includes relay K3, smoke detector, relay K1, relay K2, alarm light LED1, alarm light LED2, and voltage divider circuit; The first output terminals of temperature alarm module A, temperature alarm module B, temperature alarm module C, and temperature alarm module D are respectively connected to different digital input interfaces of the MCU. The second output terminals of temperature alarm module A, temperature alarm module B, temperature alarm module C, and temperature alarm module D are respectively connected to the coil terminal of relay K3 through diodes D1, D2, D3, and D4. The temperature alarm module A includes a comparator IC1, a resistor R9, a temperature sensor RT1, resistors R10, R11, and R12, a transistor Q5, a resistor R13, a resistor R14, and a field-effect transistor Q6. One end of the resistor R9 is connected to the power supply module, and the other end is connected to the ground wire through the temperature sensor RT1. The connection node between the resistor R9 and the temperature sensor RT1 is also connected to the positive input terminal of the comparator IC1. One end of resistor R10 is connected to the power module, and the other end is connected to the ground wire through resistor R11. The connection node of resistor R10 and resistor R11 is also connected to the negative input terminal of comparator IC1. The output of the price comparison IC1 is connected to the base of transistor Q5 through resistor R12. The collector of transistor Q5 is connected to the power module, and the emitter is connected to the ground through resistor R13. The emitter of transistor Q5 is also connected to the gate of field-effect transistor Q6 through resistor R4. The drain of field-effect transistor Q6 is connected to the power module, and the source is connected to the positive terminal of diode D1. The negative terminal of diode D1 outputs the OUT1 drive signal, which is connected to and drives the coil terminal of relay K3. The circuit structure principle of temperature alarm module B, temperature alarm module C and temperature alarm module D is the same as that of temperature alarm module A.

[0013] Each temperature alarm module uses a voltage divider consisting of a thermistor (RT1) and a fixed resistor (R9) to convert temperature changes into a voltage signal. In this embodiment, the thermistor RT1 is a PT100, and the comparator is an LM358.

[0014] Comparator IC1 compares this voltage with a reference voltage divider (composed of R10 and R11). If the voltage is higher than the set temperature threshold, IC1 outputs a high level.

[0015] A high-level signal drives transistor Q5 to conduct, which in turn drives MOSFET Q6 to conduct, outputting a valid switching signal OUT1.

[0016] After passing through diode D1, OUT1 becomes one of the inputs of an OR logic signal to the relay K3 coil for use in subsequent alarm logic.

[0017] For temperature alarm modules B, C, and D, the output signal of their corresponding comparators will drive the corresponding field-effect transistors, and finally converge into an OR logic signal through diodes D2 to D4, which is input to the relay K3 coil in the same way as diode D1.

[0018] The output of comparator IC1 is also directly connected to the digital input terminal of the MCU for parallel data acquisition by the MCU.

[0019] Temperature alarm modules A, B, C, and D are responsible for collecting temperature values ​​from four areas within the battery pack, thereby improving the accuracy and real-time performance of the detection.

[0020] The common contact of relay K3 is connected to the power module, and the normally open contact is connected to the coil terminal of relay K1 and pin 1 of the smoke alarm, respectively. Pin 2 of the smoke alarm is connected to the coil terminal of relay K2. Relays K1 and K2 drive alarm lights LED1 and LED2 respectively; Pin 2 of the smoke detector is also connected to a digital input interface of the MCU via a voltage divider circuit.

[0021] The graded alarm unit specifically includes resistor R16, resistor R15, relay K3, relay K1, resistor R18, resistor R17, alarm light LED1, smoke detector MK, resistor R22, resistor R21, resistor R19, resistor R20, relay K2 and alarm light LED2. One end of the coil of relay K3 is connected to the negative terminals of diodes D1, D2, D3 and D4 respectively through resistor R16, and the other end of the coil of relay K3 is connected to ground. The common contact of relay K3 is connected to the power module through resistor R15, and the normally open contact is connected to pin 1 of smoke alarm MK. The normally open contact of relay K3 is also connected to one end of the coil of relay K1 through resistor R18, and the other end of the coil of relay K1 is connected to the ground wire. The common contact of relay K1 is connected to the power module through resistor R17, the normally open contact is connected to the positive terminal of alarm light LED1, and the negative terminal of alarm light LED1 is connected to the ground wire. Pin 2 of the smoke alarm MK is connected to one end of the coil of relay K2 through resistor R21, and the other end of the coil of relay K2 is connected to ground. The common contact of relay K2 is connected to the power module through resistor R22, the normally open contact is connected to the positive terminal of alarm light LED2, and the negative terminal of alarm light LED2 is connected to the ground wire; Pin 2 of the smoke alarm MK is also connected to the ground wire via resistors R19 and R20 connected in series. The connection point of resistors R19 and R20 is also connected to a digital input interface of the MCU.

[0022] The graded alarm units constitute a fire alarm unit with logical OR and logical AND.

[0023] The working principle of the OR logic section is that any one of the temperature alarm modules A, B, C, and D is triggered, and its output is sent to relay K3 via a diode. After K3 is activated, it provides power to relay K1. After K1 is energized, the alarm light LED1 is lit (in this embodiment, the color of the LED is set to yellow), indicating that the system has entered the warning state. That is, at this time, the temperature is high, but there is no smoke. This can realize the OR warning logic of "alarm if any temperature is abnormal".

[0024] The working principle of the AND logic section is that after K3 is activated, it supplies power to the smoke detector. Only when the smoke detector detects smoke again (such as an internal fire) will it output a signal. The output of the smoke detector drives the relay K2, which activates the alarm light L2 (red), indicating that the system has confirmed the fire. At the same time, the smoke output is also connected to the MCU through a voltage divider circuit as a fire status input signal.

[0025] This embodiment implements a two-level alarm logic through relay cascading, using pure hardware construction rather than software judgment, which enhances reliability and response speed, and can be deployed in areas close to the fire to achieve rapid on-site alarm in small areas.

[0026] The power supply module provides power to the power supply module, MCU, temperature alarm unit, graded alarm unit, relay K4, relay K5, diode D5 and diode D6; One end of the manual switch is connected to the power module, and the other end is connected to the positive terminal of diode D5. The negative terminal of diode D5 drives the coil of relay K5. The common contact of relay K4 is connected to the power module, and the normally open contact drives the coil of relay K5; Relay K5 is used to drive external fire-fighting equipment.

[0027] One end of the coil of relay K4 is connected to a digital output interface of the MCU through resistor R25, and the other end is connected to ground. The common contact of relay K4 is connected to the power module through resistor R23, the normally open contact is connected to the positive terminal of diode D6, and the negative terminal of diode D6 is connected to one end of the coil of relay K5. The manual switch is switch SW. One end of switch SW is connected to the power module through resistor R24, and the other end is connected to the positive terminal of diode D5. The negative terminal of diode D5 is connected to the negative terminal of diode D6. Capacitor C10 is the filter capacitor of switch SW. The normally open contacts and common contacts of relay K5 drive external fire-fighting equipment.

[0028] In this embodiment, relays K5 and K4, along with a manual switch, constitute a fire extinguishing control unit. The MCU output controls relay K4 to engage. After the normally open contact of K4 closes, it drives K5 to operate via diode D6. K5 outputs a relay switch to control and drive external fire extinguishing equipment (such as a solenoid valve). The manual switch SW can bypass the MCU control and directly control K5 to engage via diode D5, enabling manual emergency fire extinguishing. Diodes D5 and D6 are connected in parallel to prevent mutual interference between the manual and automatic circuits. Capacitor C10 is used to suppress switch bounce and improve the stability of manual control.

[0029] In this embodiment, the temperature module output OUT1 is isolated by diodes (D1-D4) and then connected in parallel to avoid the abnormal output of a single module from affecting other modules, thereby improving circuit stability. At the same time, these signals participate in relay logic judgment and can also be provided to the MCU in parallel, thus constructing a signal acquisition path with dual channels of hardware and main control.

[0030] In this embodiment, the MCU uses an STC89C52 controller. In this embodiment, both the digital input interface and the digital output interface are implemented by the I / O ports of the STC89C52.

[0031] The power modules include a 220V to 12V AC-DC power module and a 12V to 5V DC-DC power module. The AC-DC power module is model DAS35-12-WV1 with a 12V output, and the DC-DC power module is model DLW2A-12S05.

[0032] The 12V power output of the DAS35-12-WV1 supplies power to the DLW2A-12S05.

[0033] The 12V power supply is responsible for powering the various relays in this embodiment, while the 5V power supply is responsible for powering the MCU system.

[0034] The smoke alarm MK has the model number DS-PDSMK-B01. In this embodiment, pins 1 and 2 of the smoke alarm are normally open outputs of the smoke alarm.

[0035] The intelligent fire protection system for the railway ferry mobile energy storage power station described in this utility model solves the technical problem of achieving graded response through hardware circuitry and supporting both manual and automatic control. This invention uses multiple temperature alarm modules to group and detect the battery pack, accurately detecting the operating temperature of each battery in the pack, greatly reducing fire hazards. This utility model features a graded alarm function, which can trigger alarms based on temperature and smoke signals. This utility model also features manual / automatic dual-path control, improving the reliability of the fire protection system.

Claims

1. A smart fire protection system for a railway ferry mobile energy storage power station, characterized in that: It includes a power module, MCU, temperature alarm unit, graded alarm unit, relay K4, relay K5, diode D5 and diode D6. The temperature alarm unit is connected to the MCU, the graded alarm unit is connected to the temperature alarm unit, and the coil terminal of relay K4 is connected to the MCU. The power supply module provides power to the power supply module, MCU, temperature alarm unit, graded alarm unit, relay K4, relay K5, diode D5 and diode D6; One end of the manual switch is connected to the power module, and the other end is connected to the positive terminal of diode D5. The negative terminal of diode D5 drives the coil of relay K5. The common contact of relay K4 is connected to the power module, and the normally open contact drives the coil of relay K5; Relay K5 is used to drive external fire-fighting equipment.

2. The intelligent fire protection system for railway ferry mobile energy storage power stations as described in claim 1, characterized in that: The temperature alarm unit includes temperature alarm module A, temperature alarm module B, temperature alarm module C, temperature alarm module D, diode D1, diode D2, diode D3 and diode D4; The graded alarm unit includes relay K3, smoke detector, relay K1, relay K2, alarm light LED1, alarm light LED2, and voltage divider circuit; The first output terminals of temperature alarm module A, temperature alarm module B, temperature alarm module C, and temperature alarm module D are respectively connected to different digital input interfaces of the MCU. The second output terminals of temperature alarm module A, temperature alarm module B, temperature alarm module C, and temperature alarm module D are respectively connected to the coil terminal of relay K3 through diodes D1, D2, D3, and D4. The common contact of relay K3 is connected to the power module, and the normally open contact is connected to the coil terminal of relay K1 and pin 1 of the smoke alarm, respectively. Pin 2 of the smoke alarm is connected to the coil terminal of relay K2. Relays K1 and K2 drive alarm lights LED1 and LED2 respectively; Pin 2 of the smoke detector is also connected to a digital input interface of the MCU via a voltage divider circuit.

3. The intelligent fire protection system for railway ferry mobile energy storage power stations as described in claim 2, characterized in that: The temperature alarm module A includes a comparator IC1, a resistor R9, a temperature sensor RT1, resistors R10, R11, and R12, a transistor Q5, a resistor R13, a resistor R14, and a field-effect transistor Q6. One end of the resistor R9 is connected to the power supply module, and the other end is connected to the ground wire through the temperature sensor RT1. The connection node between the resistor R9 and the temperature sensor RT1 is also connected to the positive input terminal of the comparator IC1. One end of resistor R10 is connected to the power module, and the other end is connected to the ground wire through resistor R11. The connection node of resistor R10 and resistor R11 is also connected to the negative input terminal of comparator IC1. The output of the price comparison IC1 is connected to the base of transistor Q5 through resistor R12. The collector of transistor Q5 is connected to the power module, and the emitter is connected to the ground through resistor R13. The emitter of transistor Q5 is also connected to the gate of field-effect transistor Q6 through resistor R4. The drain of field-effect transistor Q6 is connected to the power module, and the source is connected to the positive terminal of diode D1. The negative terminal of diode D1 outputs the OUT1 drive signal, which is connected to and drives the coil terminal of relay K3. The circuit structure principle of temperature alarm module B, temperature alarm module C and temperature alarm module D is the same as that of temperature alarm module A.

4. The intelligent fire protection system for railway ferry mobile energy storage power stations as described in claim 2, characterized in that: The graded alarm unit specifically includes resistor R16, resistor R15, relay K3, relay K1, resistor R18, resistor R17, alarm light LED1, smoke detector MK, resistor R22, resistor R21, resistor R19, resistor R20, relay K2 and alarm light LED2. One end of the coil of relay K3 is connected to the negative terminals of diodes D1, D2, D3 and D4 respectively through resistor R16, and the other end of the coil of relay K3 is connected to ground. The common contact of relay K3 is connected to the power module through resistor R15, and the normally open contact is connected to pin 1 of smoke alarm MK. The normally open contact of relay K3 is also connected to one end of the coil of relay K1 through resistor R18, and the other end of the coil of relay K1 is connected to the ground wire. The common contact of relay K1 is connected to the power module through resistor R17, the normally open contact is connected to the positive terminal of alarm light LED1, and the negative terminal of alarm light LED1 is connected to the ground wire. Pin 2 of the smoke alarm MK is connected to one end of the coil of relay K2 through resistor R21, and the other end of the coil of relay K2 is connected to ground. The common contact of relay K2 is connected to the power module through resistor R22, the normally open contact is connected to the positive terminal of alarm light LED2, and the negative terminal of alarm light LED2 is connected to the ground wire; Pin 2 of the smoke alarm MK is also connected to the ground wire via resistors R19 and R20 connected in series. The connection point of resistors R19 and R20 is also connected to a digital input interface of the MCU.

5. The intelligent fire protection system for railway ferry mobile energy storage power stations as described in claim 2, characterized in that: One end of the coil of relay K4 is connected to a digital output interface of the MCU through resistor R25, and the other end is connected to ground. The common contact of relay K4 is connected to the power module through resistor R23, the normally open contact is connected to the positive terminal of diode D6, and the negative terminal of diode D6 is connected to one end of the coil of relay K5. The manual switch is switch SW. One end of switch SW is connected to the power module through resistor R24, and the other end is connected to the positive terminal of diode D5. The negative terminal of diode D5 is connected to the negative terminal of diode D6. Capacitor C10 is the filter capacitor of switch SW. The normally open contacts and common contacts of relay K5 drive external fire-fighting equipment.

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