Sound detection device for energy storage cabinet

Abstract

The utility model provides a sound detection device for an energy storage cabinet, which comprises a first sound sensor, a second sound sensor, a signal processing unit and an alarm device, the first sound sensor and the second sound sensor are arranged on the inner wall of the energy storage cabinet, and the first sound sensor and the second sound sensor are respectively connected with the signal processing unit. The signal processing unit is connected with the alarm device, and the first sound sensor and the second sound sensor are both used for capturing sound signals in the surrounding environment and transmitting the signals to the signal processing unit. The signal processing unit converts a sound signal collected by the first sound sensor into a digital signal to identify abnormal sound, generates a first signal when detecting the abnormal sound, and converts a sound signal collected by the second sound sensor into a digital signal to identify the abnormal sound. When abnormal sound is detected and a second signal is generated, the alarm device receives the first signal and the second signal to trigger an alarm to inform related personnel.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety monitoring of energy storage cabinet equipment, and in particular relates to a sound detection device for an energy storage cabinet. Background Art

[0002] With the widespread application of new energy technologies, electrochemical energy storage technology has developed rapidly, and the application of energy storage cabinets has become more and more extensive, but it has also brought a series of safety issues.

[0003] First, electrochemical energy storage technology has developed at an astonishing speed in recent years, with an annual compound growth rate of more than 50%. However, although the current form of the battery used for electrochemical energy storage is mainly large-capacity lithium iron phosphate batteries, which have advantages over ternary lithium batteries in terms of safety, there is still a risk of thermal runaway.

[0004] In order to prevent and suppress the occurrence of safety risks in energy storage systems, the industry generally adopts early warning and fire prevention measures. In terms of early warning technology, it has developed rapidly in recent years and has been widely accepted by the market. At present, the early warning technology commonly used in energy storage systems is mixed gas detection technology, such as hydrogen and carbon monoxide detection sensors. By installing these sensors in the energy storage cabinet, when there is a problem with the battery cell, such as overcharging, combustible gas will leak. The gas sensor detects the presence of these gases to determine whether the battery cell has a safety risk.

[0005] However, although mixed gas detection technology is effective, it also has some limitations. For example, it can only detect combustible gas that has already leaked, but cannot predict when the battery cell will have problems. In addition, because the gas sensor needs to be installed inside the energy storage cabinet, the installation and maintenance costs are high.

[0006] Therefore, developing a detection device that can sense and monitor the sound changes inside the energy storage cabinet in real time is of great significance to improving the gas safety and stability of the energy storage system. Utility Model Content

[0007] The purpose of the utility model is to provide a sound detection device for an energy storage cabinet. By using sound detection technology to monitor the sound changes inside the energy storage cabinet, the working state of the battery cell can be sensed in real time, thereby predicting whether it will have safety problems such as thermal runaway.

[0008] The technical solution adopted by the utility model is as follows:

[0009] A sound detection device for an energy storage cabinet, comprising:

[0010] A first sound sensor and a second sound sensor, a signal processing unit and an alarm device are arranged on the inner wall of the energy storage cabinet, the first sound sensor and the second sound sensor are respectively connected to the signal processing unit, the signal processing unit is connected to the alarm device, the first sound sensor and the second sound sensor are both used to capture sound signals in the surrounding environment and transmit the signals to the signal processing unit, the signal processing unit converts the sound signal collected by the first sound sensor into a digital signal to identify abnormal sounds, and generates a first signal when an abnormal sound is detected, the signal processing unit converts the sound signal collected by the second sound sensor into a digital signal to identify abnormal sounds, and generates a second signal when an abnormal sound is detected, and the alarm device receives the first signal and the second signal and triggers an alarm to notify relevant personnel.

[0011] In one embodiment, a display module is further included, which is arranged on the outer surface of the cabinet door of the energy storage cabinet, and is used to display the key information of the sound signal waveform and spectrum diagram of the energy storage cabinet, as well as the operating status and alarm information of the equipment.

[0012] In one embodiment, the signal processing unit includes an acoustic-to-electric conversion amplifier and a signal processor, the acoustic-to-electric conversion amplifier is electrically connected to the first sound sensor and the second sound sensor respectively, and the signal processor is connected to the acoustic-to-electric conversion amplifier.

[0013] In one of the embodiments, the outer surface of the cabinet door of the energy storage cabinet also has a main switch for turning off the alarm device.

[0014] In one of the embodiments, the energy storage cabinet is provided with an electric automatic fire extinguishing device for extinguishing a fire inside the cabinet.

[0015] In one embodiment, the alarm device is a buzzer.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the utility model include:

[0017] 1. The energy storage cabinet sound detection device can sense and monitor the sound changes inside the energy storage cabinet in real time. This real-time performance enables the device to quickly capture any abnormal sound, thereby achieving instant warning of the safety status of the energy storage cabinet. The use of two sets of sound data can prevent the alarm from being triggered due to accidental reasons, thereby improving reliability.

[0018] 2. The sound detection device has a high sensitivity and can capture weak sound signals. This is crucial for timely detection of abnormal conditions inside the energy storage cabinet, because many safety hazards may only produce weak sound signals in the early stages. The sound detection device uses a non-contact monitoring method and does not require direct contact with the equipment or batteries inside the energy storage cabinet. This non-contact nature not only reduces the difficulty of installation and maintenance, but also reduces the safety risks that may be caused by contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following drawings are provided for display:

[0020] Figure 1 It is a structural schematic diagram of the sound detection device of the energy storage cabinet of the utility model.

[0021] Figure 2 It is a connection diagram of various components of the device of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1-energy storage cabinet; 2-cabinet door; 3-display device; 41-first sound sensor; 42-second sound sensor; 5-mainboard; 6-photoelectric smoke detector; 7-electric automatic fire extinguishing device; 8-alarm device; 9-signal processing unit. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] For ease of description, spatially relative terms, such as "under", "below", "down", "above", "upper", etc., will be used when necessary to describe the relationship of one element or feature relative to another element or feature shown in the drawings. The spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation shown in the drawings. For example, if the device in the figure is turned over, elements described as "under" or "beneath" other elements or features will be oriented "above" the other elements or features.

[0026] Unless otherwise defined, the terms used herein have the same meaning as commonly understood by ordinary technicians in the field to which the present invention belongs, and the terms should be and understood to have the same meaning as in the context of the relevant technology, and should not be understood in an idealized or overly formal way, except for the cases explicitly defined in the present invention.

[0027] Reference Figure 1-2, a sound detection device for an energy storage cabinet comprises: a first sound sensor and a second sound sensor arranged on the inner wall of the energy storage cabinet, a signal processing unit and an alarm device, the first sound sensor and the second sound sensor are respectively connected to the signal processing unit, the signal processing unit is connected to the alarm device, the first sound sensor and the second sound sensor are both used to capture sound signals in the surrounding environment and transmit the signals to the signal processing unit, the signal processing unit converts the sound signal collected by the first sound sensor into a digital signal to identify abnormal sounds, and generates a first signal when an abnormal sound is detected, the signal processing unit converts the sound signal collected by the second sound sensor into a digital signal to identify abnormal sounds, and generates a second signal when an abnormal sound is detected, and the alarm device receives the first signal and the second signal and triggers an alarm to notify relevant personnel.

[0028] The pressure relief valve of the battery cell opens due to overcharging or other reasons; the sound of the opening of the pressure relief valve of the battery cell is transmitted to the sound sensor at the moment of opening; after the sound sensor detects the sound of the battery cell valve opening, it analyzes and determines whether it is the battery cell valve opening, and the alarm device triggers the alarm to notify relevant personnel only after receiving the first signal and the second signal of the signal processing unit. The sound data collected by two groups of sound sensors can avoid triggering the alarm due to accidental reasons, thereby improving reliability.

[0029] Sound sensor: A high-sensitivity, wide-band sound sensor is used to capture various sound signals inside the energy storage cabinet. The sound sensor is installed inside or near the energy storage cabinet to accurately sense sound changes;

[0030] In one embodiment, the signal processing unit is responsible for converting the sound signal collected by the sound sensor into a digital signal and performing preliminary processing. The unit has high-speed sampling rate and low noise characteristics to ensure that the collected sound signal is accurate and reliable. The collected sound signal is deeply analyzed and processed. The unit uses advanced signal processing technology and intelligent algorithms to extract key information from the sound signal. At the same time, the unit has built-in safety status judgment logic, which can automatically judge the safety status of the energy storage cabinet according to the change of the sound signal, and give corresponding early warning or alarm information.

[0031] In one embodiment, the energy storage cabinet is divided into a first accommodation space ( Figure 1 The left space) and the second storage space ( Figure 1 The battery cell is placed in the second accommodation space, a plurality of holes are opened in the upper end of the partition, the first sound sensor and the second sound sensor are placed in the first accommodation space and close to the holes, and the noise of the opening sound of the battery cell pressure relief valve is reduced through the plurality of holes to improve the sound recognition sensitivity.

[0032] In one embodiment, the alarm device triggers an alarm when an abnormal sound signal is detected. The device supports multiple alarm modes, such as sound and light alarm, SMS alarm, email alarm, etc., to meet the needs of different scenarios. At the same time, the device also has an alarm threshold setting function, and the user can adjust the alarm threshold according to the actual situation.

[0033] In one embodiment, the energy storage cabinet sound detection device further includes a display module, which is disposed on the outer surface of the cabinet door of the energy storage cabinet and is used to display key information such as the sound signal waveform and spectrum of the energy storage cabinet, as well as the operating status and alarm information of the device. The display module uses a high-definition liquid crystal display screen, which is intuitive and easy to operate.

[0034] In one embodiment, the signal processing unit includes an acoustic-to-electric conversion amplifier and a signal processor. The acoustic-to-electric conversion amplifier is electrically connected to the first sound sensor and the second sound sensor respectively, and the signal processor is connected to the acoustic-to-electric conversion amplifier.

[0035] In one embodiment, the outer surface of the cabinet door of the energy storage cabinet also has a main switch for closing the alarm device. The energy storage cabinet is provided with an electric automatic fire extinguishing device for extinguishing a fire inside the cabinet.

[0036] In one embodiment, a main board connected to an operating indicator light and an emergency stop button is provided on the cabinet door, and a photoelectric smoke detector and an electric automatic fire extinguishing device are connected to the main board. The main board is used to control the operating state of the entire system; the photoelectric smoke detector detects smoke inside the cabinet to determine whether a fire has occurred; the electric automatic fire extinguishing device is used to extinguish a fire inside the cabinet;

[0037] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A sound detection device for an energy storage cabinet, characterized in that: The invention comprises a first sound sensor and a second sound sensor, a signal processing unit and an alarm device, which are arranged on the inner wall of the energy storage cabinet. The first sound sensor and the second sound sensor are respectively connected to the signal processing unit, and the signal processing unit is connected to the alarm device. The first sound sensor and the second sound sensor are both used to capture sound signals in the surrounding environment and transmit the signals to the signal processing unit. The signal processing unit converts the sound signal collected by the first sound sensor into a digital signal to identify abnormal sounds, and generates a first signal when an abnormal sound is detected. The signal processing unit converts the sound signal collected by the second sound sensor into a digital signal to identify abnormal sounds, and generates a second signal when an abnormal sound is detected. The alarm device receives the first signal and the second signal and triggers an alarm to notify relevant personnel.

2. The energy storage cabinet sound detection device according to claim 1, characterized in that: It also includes a display module, which is arranged on the outer surface of the cabinet door of the energy storage cabinet and is used to display key information of the sound signal waveform and spectrum diagram of the energy storage cabinet, as well as the operating status and alarm information of the equipment.

3. The energy storage cabinet sound detection device according to claim 1, characterized in that: The signal processing unit includes an acoustic-to-electric conversion amplifier and a signal processor. The acoustic-to-electric conversion amplifier is electrically connected to the first sound sensor and the second sound sensor respectively, and the signal processor is connected to the acoustic-to-electric conversion amplifier.

4. The energy storage cabinet sound detection device according to claim 1, characterized in that: The outer surface of the cabinet door of the energy storage cabinet also has a main switch for closing the alarm device.

5. The energy storage cabinet sound detection device according to claim 1, characterized in that: The energy storage cabinet is provided with an electric automatic fire extinguishing device for extinguishing fire inside the cabinet.

6. The energy storage cabinet sound detection device according to claim 1, characterized in that: The alarm device is a buzzer.

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