Energy storage box ventilation and exhaust monitoring system and monitoring method

Abstract

The invention discloses an energy storage box ventilation and exhaust monitoring system and monitoring method. The monitoring system comprises a dangerous case detection assembly, a ventilation and exhaust assembly, an integrated monitoring module, an upper computer and a manual control button. The monitoring method comprises the steps that the integrated monitoring module continuously receives detection data returned by the dangerous case detection assembly in the energy storage box, judges whether the dangerous case state in the energy storage box is controllable or not, and sends out a control signal to control the ventilation and exhaust assembly to start exhaust operation or stop exhaust operation; the working state of the ventilation and exhaust assembly is judged, alarm operation is given out for abnormal states, and the alternating current contactor is disconnected to disconnect power supply of the whole system. According to the invention, the internal state of the energy storage box is monitored through a plurality of groups of detectors of the dangerous case detection assembly, the current of a push rod motor and a fan is monitored in real time, the working state and real-time current of each assembly can be checked through an upper computer, display and alarm are carried out when the ventilation and exhaust assembly fails, and control can be carried out through a manual control button. And the risk of a fire disaster is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage boxes, and in particular to a ventilation and exhaust monitoring system and a monitoring method for energy storage boxes. Background Art

[0002] An energy storage box is a device used to store electrical energy, usually consisting of a battery pack, a control system, and a protection circuit. Its main function is to store electrical energy from sources such as the grid, solar panels, or wind turbines, and release that energy for use when needed. Energy storage boxes are widely used in homes, businesses, and industries to improve energy efficiency, ensure power supply stability, and manage power demand. Through an intelligent management system, energy storage boxes can optimize the storage and release of electrical energy, reduce electricity costs, and support the integration of renewable energy.

[0003] The cause of fire in the energy storage box is often caused by the thermal runaway reaction inside a battery cell or several battery cells. The heat released by the reaction-induced combustion will cause thermal runaway of adjacent batteries one after another, and then induce a thermal runaway chain propagation effect inside the module, causing the scale of the fire to expand and spread rapidly in a short period of time. During this period, flammable and toxic and harmful gases will be released, affecting the escape and fire rescue of people in the fire scene, and it is very easy to cause more serious accident damage.

[0004] The ventilation monitoring module of a conventional energy storage box usually only has the function of controlling the opening and closing of the fan. When the fan or push rod fails, the ventilation system cannot effectively eliminate the combustible gas accumulated in the energy storage box, causing the combustible gas to accumulate inside the box, significantly increasing the risk of fire and explosion. Summary of the invention

[0005] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a ventilation and exhaust monitoring system and a monitoring method for an energy storage box.

[0007] In order to achieve the above objectives, in a first aspect, the present invention provides an energy storage box ventilation and exhaust monitoring system, comprising:

[0008] Danger detection component, the danger detection component includes a temperature detector, a combustible gas detector and a smoke detector, and the danger detection component is used to monitor the smoke and combustible gas concentration in the energy storage box in real time;

[0009] A ventilation and exhaust component, the ventilation and exhaust component includes a fan, a push rod motor and a shutter, and the ventilation and exhaust component is used to control the air intake and exhaust in the energy storage box to discharge combustible gas before a dangerous situation occurs;

[0010] An integrated monitoring module is used to receive detection data transmitted by the danger detection component, send out a control signal to drive the ventilation and exhaust components, and receive operating status data of the ventilation and exhaust components.

[0011] In some of the embodiments, the integrated monitoring module is electrically connected to the danger detection component and the ventilation and exhaust component, and the integrated monitoring module is provided with a power supply wiring port, a control signal wiring port, a signal transmission port and a customization port.

[0012] In some embodiments, the ventilation and exhaust component is also connected to a manual control button, and the manual control button is used to manually switch the ventilation and exhaust component.

[0013] Some of the embodiments further include a host computer, which is electrically connected to the integrated monitoring module and is used to check the operating status of the danger detection component, the ventilation and exhaust component, and the integrated monitoring module.

[0014] In a second aspect, the present invention further provides a method for monitoring ventilation and exhaust of an energy storage box, which is performed by the ventilation and exhaust monitoring system of the energy storage box as described in the first aspect, and the monitoring method steps include:

[0015] S1, the integrated monitoring module continuously receives the detection data sent back by the temperature detector, combustible gas detector and smoke detector in the danger detection component in the energy storage box, determines whether the danger state inside the energy storage box is controllable, and sends a control signal to control the ventilation and exhaust components to start the exhaust operation or shut down the exhaust operation;

[0016] S2, the integrated monitoring module continuously receives the operating data sent back by the ventilation and exhaust components, determines the working status of the ventilation and exhaust components, and issues an alarm operation for abnormal status;

[0017] S3, disconnect the AC contactor to disconnect the power supply of the entire system.

[0018] In some embodiments, after the danger detection component detects the danger, the ventilation component is activated under the condition that any one of the following three conditions is met:

[0019] A heat detector detects a rise in temperature; or

[0020] The smoke detector detects an increase in smoke levels; or

[0021] The combustible gas detector detected an increase in the concentration of combustible gas.

[0022] In some embodiments, after the ventilation and exhaust assembly is started, the integrated monitoring module determines the operating status of the ventilation and exhaust assembly by detecting the operating current of the push rod motor and the fan, and the operating status of the ventilation and exhaust assembly includes normal, faulty and power off.

[0023] In some embodiments, when the integrated monitoring module detects that the starting current of the push rod motor is ≥20mA and the running current is ≤2000mA, the integrated monitoring module determines that the working state of the push rod motor is normal and outputs a normal working signal;

[0024] When the integrated monitoring module detects that the starting current of the push rod motor is less than 20mA or the operating current is greater than 2000mA, the integrated monitoring module determines that the working state of the push rod motor is abnormal and outputs an abnormal alarm signal;

[0025] When the integrated monitoring module detects that the starting current of the push rod motor is 0, the integrated monitoring module determines that the working state of the push rod motor is power-off, and outputs a power-off alarm signal.

[0026] In some embodiments, when the integrated monitoring module detects that the starting current of the fan is ≥20mA and the operating current is >250mA, the integrated monitoring module determines that the working state of the fan is normal and outputs a normal working signal;

[0027] When the integrated monitoring module detects that the starting current of the fan is less than 20mA or the operating current is less than or equal to 250mA, the integrated monitoring module determines that the working state of the push rod motor is abnormal, triggers a secondary delay detection, and determines whether to output an abnormal alarm signal;

[0028] When the integrated monitoring module detects that the starting current of the fan is 0, the integrated monitoring module determines that the working state of the push rod motor is power-off, and outputs a power-off alarm signal.

[0029] In some of the embodiments, the integrated monitoring module triggers the secondary delay detection and then delays for 1s and 0.5s respectively to detect the fan operating current;

[0030] If the fan operating current detected twice is both less than 250mA, the integrated monitoring module determines that the push rod motor working state is abnormal and outputs an abnormal alarm signal;

[0031] If the operating current of any fan in the two tests is ≥250mA, the integrated monitoring module determines that the working state of the push rod motor is normal and outputs a normal working signal.

[0032] The present invention has the following beneficial effects:

[0033] The present invention monitors the internal state of the energy storage box through multiple groups of detectors of the danger detection component, controls the start-up of the ventilation and exhaust components through the integrated monitoring module when a danger occurs, and monitors the current of the push rod motor and the fan in real time. The working state and real-time current of each component can be checked through the host computer, and an alarm is displayed and alarmed when the ventilation and exhaust components fail. It can also be controlled by a manual control button, effectively reducing the risk of fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the ventilation and exhaust monitoring system for the energy storage box proposed by the present invention;

[0035] Figure 2 This is a flow chart of the ventilation and exhaust monitoring method for the energy storage box proposed by the present invention.

[0036] Legend:

[0037] 1. Danger detection component; 11. Temperature detector; 12. Combustible gas detector; 13. Smoke detector; 2. Ventilation and exhaust component; 21. Fan; 22. Push rod motor; 23. Shutter; 3. Integrated monitoring module; 31. Power supply wiring port; 32. Control signal wiring port; 33. Signal transmission port; 34. Customized port; 4. Host computer; 5. Manual control button. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Please refer to the following examples for details:

[0040] Reference Figure 1 The present invention provides an embodiment of a ventilation and exhaust monitoring system for an energy storage box, comprising: a danger detection component 1, a ventilation and exhaust component 2, an integrated monitoring module 3, a host computer 4, and a manual control button 5. The danger detection component 1 is used to monitor the temperature, smoke and combustible gas concentration in the energy storage box in real time; the ventilation and exhaust component 2 is used to control the air intake and exhaust in the energy storage box, and discharge combustible gas before the danger occurs; the integrated monitoring module 3 is used to receive the detection data transmitted by the danger detection component 1, send a control signal to drive the ventilation and exhaust component 2, and receive the operation status data of the ventilation and exhaust component 2.

[0041] Please continue reading Figure 1The danger detection component 1 includes a temperature detector 11, a combustible gas detector 12 and a smoke detector 13. In the early warning of fire, when the ambient temperature rises sharply, the temperature detector 11 will trigger an alarm, the combustible gas detector 12 is used to detect the concentration of combustible gas in the energy storage box, and the smoke alarm is used to detect the concentration of smoke in the energy storage box to prevent explosion or fire caused by gas leakage.

[0042] Specifically, the combustible gas detector 12 sets two levels of alarm thresholds, namely, the first level threshold is 10%LEL, and the second level threshold is 20%LEL. When the combustible gas concentration is between 0%LEL and 10%LEL, the integrated monitoring module 3 will first disconnect the DC contactor, stop the charging and discharging operation, and then start the ventilation and exhaust component 2 for ventilation; when the combustible gas concentration is between 10%LEL and 20%LEL, the integrated monitoring module 3 will increase the exhaust action of the ventilation and exhaust component 2; when the combustible gas concentration is above 20%LEL or drops back to 0%LEL, the integrated monitoring module 3 will close the ventilation and exhaust component 2.

[0043] Please continue reading Figure 1 The ventilation and exhaust assembly 2 includes a fan 21, a push rod motor 22 and a louver 23. The fan 21 generates airflow through a rotating impeller to achieve air supply or exhaust; the push rod motor 22 is used to drive the push rod device to move it in the vertical or horizontal direction to control the opening and closing of the louver 23. The air flow is controlled by adjusting the opening and closing degree of the louver 23 to ensure the ventilation effect.

[0044] Furthermore, the ventilation and exhaust component 2 is also connected to a manual control button 5 for manually switching the ventilation and exhaust component 2 on and off. The working state of the system can be adjusted by the manual button, such as starting the fan 21 or adjusting the opening of the shutter 23.

[0045] Please continue reading Figure 1 The integrated monitoring module 3 is electrically connected to the danger detection component 1 and the ventilation component 2. The integrated monitoring module 3 is provided with a power supply connection port 31, a control signal connection port 32, a signal transmission port 33 and a customization port 34.

[0046] Specifically, the power supply wiring port 31 includes a group of 220V input ports, a group of 24V input ports, a group of 220 output ports (for powering the fan 21) and two groups of 24V output ports (for powering the push rod motor 22); the control signal wiring port 32 includes two groups of switch input signal ports and three groups of switch output signal ports; the signal transmission port 33 includes a group of MODBUSRTU output signal ports; in addition, the custom port 34 includes two groups of reserved signal ports, which can support user-defined functions.

[0047] Please continue reading Figure 1The host computer 4 and the integrated monitoring module 3 are electrically connected so as to read and display the operating status of each component in real time, including the working status of each detector of the danger detection component 1, the working status of the fan 21 in the ventilation and exhaust component 2, the pushing stroke of the push rod motor 22 and the opening and closing status of the shutter 23.

[0048] Reference Figure 2 The present invention further provides an embodiment of a method for monitoring ventilation and exhaust of an energy storage box, which is executed by the ventilation and exhaust monitoring system of the energy storage box in the above embodiment, and the monitoring method steps include:

[0049] S1, the integrated monitoring module 3 continuously receives the detection data sent back by the temperature detector 11, the combustible gas detector 12 and the smoke detector 13 in the danger detection component 1 in the energy storage box, determines whether the danger state inside the energy storage box is controllable, and sends a control signal to control the ventilation and exhaust component 2 to start the exhaust operation or close the exhaust operation;

[0050] S2, the integrated monitoring module 3 continuously receives the operating data sent back by the ventilation and exhaust components 2, determines the working status of the ventilation and exhaust components 2, and issues an alarm operation for abnormal status;

[0051] S3, disconnect the AC contactor to disconnect the power supply of the entire system.

[0052] Further, after the danger detection component 1 detects the danger, the ventilation component 2 is activated if any one of the following three conditions is met:

[0053] The temperature detector 11 detects a temperature rise; or

[0054] The smoke detector 13 detects a rise in smoke concentration; or

[0055] The combustible gas detector 12 detects a rise in the combustible gas concentration.

[0056] It should be explained in detail that after the ventilation and exhaust component 2 is started, the integrated monitoring module 3 determines the operating status of the ventilation and exhaust component 2 by detecting the working current of the push rod motor 22 and the fan 21. The operating status of the ventilation and exhaust component 2 includes normal, faulty and power off.

[0057] For example:

[0058] When the integrated monitoring module 3 detects that the starting current of the push rod motor 22 is ≥20mA and the running current is ≤2000mA, the integrated monitoring module 3 determines that the working state of the push rod motor 22 is normal and outputs a normal working signal;

[0059] When the integrated monitoring module 3 detects that the starting current of the push rod motor 22 is less than 20mA or the operating current is greater than 2000mA, the integrated monitoring module 3 determines that the working state of the push rod motor 22 is abnormal and outputs an abnormal alarm signal;

[0060] When the integrated monitoring module 3 detects that the starting current of the push rod motor 22 is 0, the integrated monitoring module 3 determines that the working state of the push rod motor 22 is power-off, and outputs a power-off alarm signal.

[0061] When the integrated monitoring module 3 detects that the starting current of the fan 21 is ≥20mA and the operating current is >250mA, the integrated monitoring module 3 determines that the working state of the fan 21 is normal and outputs a normal working signal;

[0062] When the integrated monitoring module 3 detects that the starting current of the fan 21 is less than 20mA or the operating current is less than or equal to 250mA, the integrated monitoring module 3 determines that the working state of the push rod motor 22 is abnormal, triggers the secondary delay detection, and determines whether to output an abnormal alarm signal;

[0063] When the integrated monitoring module 3 detects that the starting current of the fan 21 is 0, the integrated monitoring module 3 determines that the working state of the push rod motor 22 is power-off, and outputs a power-off alarm signal.

[0064] It should be explained in detail that after the integrated monitoring module 3 triggers the secondary delay detection, it delays 1s and 0.5s to detect the operating current of the fan 21;

[0065] If the operating current of the fan 21 is less than 250mA during the two detections, the integrated monitoring module 3 determines that the working state of the push rod motor 22 is abnormal and outputs an abnormal alarm signal;

[0066] If the operating current of any fan 21 in the two tests is ≥250mA, the integrated monitoring module 3 determines that the working state of the push rod motor 22 is normal and outputs a normal working signal.

[0067] Through the above technical scheme, the present application monitors the internal state of the energy storage box through multiple groups of detectors of the danger detection component 1, controls the start-up of the ventilation and exhaust component 2 through the integrated monitoring module 3 when a danger occurs, and monitors the current of the push rod motor 22 and the fan 21 in real time. The working status and real-time current of each component can be viewed through the host computer 4, and an alarm will be displayed and alarmed when the ventilation and exhaust component 2 fails. It can also be controlled by the manual control button 5, which effectively reduces the risk of fire.

[0068] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy storage box ventilation and exhaust monitoring system, characterized in that: include: A danger detection component (1), the danger detection component (1) comprising a temperature detector (11), a combustible gas detector (12) and a smoke detector (13), the danger detection component (1) being used for real-time monitoring of smoke and combustible gas concentrations in the energy storage box; A ventilation and exhaust component (2), the ventilation and exhaust component (2) comprising a fan (21), a push rod motor (22) and a shutter (23), the ventilation and exhaust component (2) being used to control air intake and exhaust in the energy storage box, and to discharge combustible gas before a dangerous situation occurs; An integrated monitoring module (3) is used to receive detection data transmitted by the danger detection component (1), send a control signal to drive the ventilation and exhaust component (2), and receive operating status data of the ventilation and exhaust component (2).

2. The energy storage box ventilation and exhaust monitoring system according to claim 1 is characterized in that: The integrated monitoring module (3) is electrically connected to the danger detection component (1) and the ventilation and exhaust component (2), and the integrated monitoring module (3) is provided with a power supply wiring port (31), a control signal wiring port (32), a signal transmission port (33) and a customization port (34).

3. The energy storage box ventilation and exhaust monitoring system according to claim 1, characterized in that: The ventilation and exhaust component (2) is also connected to a manual control button (5), and the manual control button (5) is used to manually switch the ventilation and exhaust component (2).

4. The energy storage box ventilation and exhaust monitoring system according to claim 1, characterized in that: It also includes a host computer (4), the host computer (4) and the integrated monitoring module (3) are electrically connected, and the host computer (4) is used to check the operating status of the danger detection component (1), the ventilation and exhaust component (2) and the integrated monitoring module (3).

5. A method for monitoring ventilation and exhaust of an energy storage box, characterized in that: The monitoring method is performed via the energy storage box ventilation and exhaust monitoring system according to any one of claims 1 to 4, and the monitoring method steps include: S1, the integrated monitoring module (3) continuously receives the detection data sent back by the temperature detector (11), the combustible gas detector (12) and the smoke detector (13) in the danger detection component (1) in the energy storage box, determines whether the danger state inside the energy storage box is controllable, and sends a control signal to control the ventilation and exhaust component (2) to start the exhaust operation or shut down the exhaust operation; S2, the integrated monitoring module (3) continuously receives the operating data transmitted by the ventilation and exhaust components (2), determines the working state of the ventilation and exhaust components (2), and issues an alarm operation for abnormal states; S3, disconnect the AC contactor to disconnect the power supply of the entire system.

6. A method for monitoring ventilation and exhaust of an energy storage box according to claim 5, characterized in that: After the danger detection component (1) detects the occurrence of a danger, the ventilation and exhaust component (2) is activated under the condition that any one of the following three conditions is met: The temperature sensor (11) detects a temperature rise; or The smoke detector (13) detects a rise in smoke concentration; or The combustible gas detector (12) detects an increase in the concentration of combustible gas.

7. The method for monitoring ventilation and exhaust of an energy storage box according to claim 5, characterized in that: After the ventilation and exhaust component (2) is started, the integrated monitoring module (3) determines the operating state of the ventilation and exhaust component (2) by detecting the operating current of the push rod motor (22) and the fan (21), and the operating state of the ventilation and exhaust component (2) includes normal, faulty and power-off.

8. A method for monitoring ventilation and exhaust of an energy storage box according to claim 7, characterized in that: When the integrated monitoring module (3) detects that the starting current of the push rod motor (22) is ≥20mA and the operating current is ≤2000mA, the integrated monitoring module (3) determines that the working state of the push rod motor (22) is normal and outputs a normal working signal; When the integrated monitoring module (3) detects that the starting current of the push rod motor (22) is less than 20 mA or the operating current is greater than 2000 mA, the integrated monitoring module (3) determines that the working state of the push rod motor (22) is abnormal and outputs an abnormal alarm signal; When the integrated monitoring module (3) detects that the starting current of the push rod motor (22) is 0, the integrated monitoring module (3) determines that the working state of the push rod motor (22) is power-off, and outputs a power-off alarm signal.

9. The method for monitoring ventilation and exhaust of an energy storage box according to claim 7, characterized in that: When the integrated monitoring module (3) detects that the starting current of the fan (21) is ≥20mA and the operating current is >250mA, the integrated monitoring module (3) determines that the working state of the fan (21) is normal and outputs a normal working signal; When the integrated monitoring module (3) detects that the starting current of the fan (21) is less than 20 mA or the operating current is less than or equal to 250 mA, the integrated monitoring module (3) determines that the working state of the push rod motor (22) is abnormal, triggers a secondary delay detection, and determines whether to output an abnormal alarm signal; When the integrated monitoring module (3) detects that the starting current of the fan (21) is 0, the integrated monitoring module (3) determines that the working state of the push rod motor (22) is power-off, and outputs a power-off alarm signal.

10. A method for monitoring ventilation and exhaust of an energy storage box according to claim 9, characterized in that: The integrated monitoring module (3) triggers the secondary delay detection and respectively delays 1 second and 0.5 seconds to detect the operating current of the fan (21); If the operating current of the fan (21) is less than 250 mA during the two detections, the integrated monitoring module (3) determines that the working state of the push rod motor (22) is abnormal, and outputs an abnormal alarm signal; If the operating current of any fan (21) in the two tests is ≥250mA, the integrated monitoring module (3) determines that the working state of the push rod motor (22) is normal and outputs a normal working signal.

Images