CN214042545U

CN214042545U - Early warning system of lithium battery energy storage power station

Info

Publication number: CN214042545U
Application number: CN202022858177.9U
Authority: CN
Inventors: 金阳; 刘昊琰; 李雨珮; 李心远; 韩晓蓓; 张晋源; 唐文杰
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-08-24
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses an early warning system of a lithium battery energy storage power station, which relates to the technical field of lithium battery safety detection, and comprises a microcomputer device, a hydrogen detection device, a sound detection device, a video acquisition device, an outer cover and a bracket, wherein the microcomputer device is internally provided with a microprocessor module, an alarm module, a power-off protection module, a communication module and a power module, the hydrogen detection device detects the concentration of hydrogen in the air, the sound detection device detects sound with specific frequency, the video acquisition device acquires image information of a detection area in real time, and the microprocessor module is connected with the hydrogen detection device, the sound detection device and the video acquisition device, the utility model has simple structure, can detect safety problems in the early stage of lithium battery overcharge and give a warning in time, and strives for enough time for taking safety measures, the safety of personnel and the normal operation of equipment are protected.

Description

Early warning system of lithium battery energy storage power station

Technical Field

The utility model relates to a lithium cell safety inspection technical field, more specifically relate to a lithium cell energy storage power station early warning system.

Background

With the continuous development of renewable energy technology, solar energy and wind energy power generation can compete with fossil fuel in price, but is always unstable due to intermittent power generation, and batteries are required to store redundant energy to compensate for supply changes.

The lithium battery energy storage has the advantages of high energy density, small self-discharge, no memory effect, wide working dimension range, quick charge and discharge, long service life, small environmental pollution, no terrain limitation and the like, is the best technical route for the development of energy storage products at present, can be competent in various complex scenes, and has strong competitiveness in the main energy storage fields of a power generation side, a user side, a power grid side and the like. However, external factors such as overcharge, overdischarge and overheating easily cause the collapse of a battery film and internal short circuit, so that thermal runaway is caused to cause safety problems, and the battery is difficult to put into operation in a large-scale energy storage power station.

Therefore, there is a need to develop a system for warning before a fire or explosion occurs to protect the safety of personnel and the normal operation of equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that the safety problem can be detected in the early overcharge stage of the lithium ion battery and early warning is carried out in time, and the safety of personnel and the normal operation of equipment are protected, an early warning system of a lithium ion battery energy storage power station is designed.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme: an early warning system for a lithium battery energy storage power station comprises a microcomputer device, a hydrogen detection device, a sound detection device, a video acquisition device, an outer cover and a support, wherein a microprocessor module, an alarm module, a power-off protection module, a communication module and a power supply module are arranged in the microcomputer device, the hydrogen detection device detects the concentration of hydrogen in air, the sound detection device detects sound with specific frequency, the video acquisition device acquires image information of a detection area in real time, the microprocessor module is connected with the hydrogen detection device, the sound detection device and the video acquisition device so as to process acquired processing data information and image information and further judge the state of a lithium battery, the alarm module gives an alarm after the microprocessor module detects a safety problem, the power-off protection module cuts off the power supply after the microprocessor module detects the safety problem, the communication module utilizes wireless technology to transmit, is connected with the Internet of things and transmits information of the Internet of things.

Further, the system is also provided with a support, the microcomputer device, the hydrogen detection device, the sound detection device and the video acquisition device are arranged on the support, and the battery compartment is fixedly arranged on the inner side of the support.

Further, the support overcoat is equipped with the dustcoat the battery compartment is placed to the support, the early warning system in lithium cell energy storage power station is protected to the dustcoat.

The working principle is as follows: the early warning system of the lithium battery energy storage power station comprises three stages of hydrogen warning, sound warning and image warning, in the first stage, lithium dendrite and polymer binder react to generate hydrogen in the early overcharge stage of the lithium battery, and compared with other thermal runaway gases (CO, CO2, HCL, HF and SO2), the early warning system of the lithium battery energy storage power station can detect the hydrogen at the earliest time, and sends out first-stage warning when the hydrogen is detected through a hydrogen detection device; in the second stage, the inside of the lithium ion battery is rapidly decomposed and generates gas, so that the air pressure in the lithium ion battery is increased, the pressure relief device relieves the pressure and sends out sound with specific frequency, and the early warning system of the lithium ion battery energy storage power station is positioned to a sound source through the sound detection device, detects an affected part and sends out second-stage warning; in the third stage, constantly rising along with the temperature, the lithium ion battery inside can produce the high fever, causes electrolyte to last the vaporization, and the early warning system of lithium cell energy storage power station passes through video acquisition device, gathers image information and spreads into microprocessor module into, discerns vaporization electrolyte based on the degree of depth study, sends the third level early warning when discerning vaporization electrolyte.

The utility model has the advantages as follows:

1. the utility model discloses can detect safety problem and timely early warning in lithium ion battery overcharge early stage, strive for sufficient time, the normal operating of protection personal safety and equipment for taking safety measure.

2. The utility model discloses divide into hydrogen early warning, sound early warning, the three stage of image early warning, realize multistage protection through tertiary detection to the reliability that the reinforcing detected avoids the emergence of incident effectively.

3. The support is equipped with the dustcoat outward the battery compartment is placed to the support, dustcoat protection lithium cell energy storage power station early warning system.

Drawings

FIG. 1 is a schematic structural diagram of an early warning system of a lithium battery energy storage power station;

FIG. 2 is a schematic diagram of a video capture module;

FIG. 3 is a schematic view of the structure of the hydrogen gas detecting device;

FIG. 4 is a schematic diagram of a microprocessor module;

reference numerals: 1-a microcomputer device, 2-an outer cover, 3-a support, 4-a battery bin, 5-a sound detection device, 6-a hydrogen detection device, 7-a video acquisition device, 8-a camera, 9-a microprocessor module, 10-an alarm module, 11-a power-off protection module, 12-a communication module and 13-a power supply module.

Detailed Description

For a better understanding of the present invention, the following examples are given in order to describe the present invention in further detail.

Exemplary embodiments will be described in detail herein with reference to the accompanying drawings. The real-time approach described in the following exemplary real-time examples does not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

For convenience of understanding, before explaining the embodiments of the present disclosure in detail, an application scenario of the embodiments of the present disclosure is introduced.

For example, in an energy storage bin, battery modules placed on a battery rack are densely stacked, and due to the difference of single batteries in the battery modules, overcharge is easily caused to a certain single battery during charging, so that heat is transmitted to the whole battery module, and the safe operation of the whole energy storage bin is influenced. When the thermal runaway reaches a certain degree, the combustible gas in the energy storage bin can explode, and the energy storage battery is greatly damaged by the huge impact force and the subsequent violent combustion. Therefore, the early warning system of the lithium battery energy storage power station can be installed in the energy storage bin, multi-stage protection is achieved through three-stage detection, and the safety of personnel and the normal operation of equipment are protected.

Of course, the utility model discloses an example not only can be applied to in above-mentioned scene, probably can also be applied to in other application scenes in the practical application, here the utility model discloses an example is no longer one by one to other application scenes.

Example 1

As shown in fig. 1-4, the utility model relates to an early warning system of lithium cell energy storage power station, including setting up microcomputer device 1, hydrogen detection device 6, sound detection device 5, the video acquisition device 7 on support 3, battery compartment 4 sets up at support 3 inboardly, video acquisition device 7 includes 3

cameras

8, 3 overcoat of support are equipped with dustcoat 2.

The using method comprises the following steps:

the video acquisition device 7 acquires image information of a target area in real time, the target area refers to an area where vaporized electrolyte can be detected inside the battery cabin 4 and outside the battery cabin 4, the acquired image information is transmitted to the microcomputer device 1 to be processed, and then whether the vaporized electrolyte is detected is judged, the hydrogen detection device 6 detects the concentration of hydrogen in the air, the acquired data information is transmitted to the microcomputer device 1 to be processed, and then whether the hydrogen is detected is judged, the microcomputer device 1 is internally provided with a microprocessor module 9, an alarm module 10, a power-off protection module 11, a communication module 12 and a power module 13, the microprocessor module 9 receives the data information from the hydrogen detection device 6 and the sound detection device 5, judges whether the hydrogen and the sound with specific frequency are detected, and simultaneously receives the image information transmitted by the video acquisition device 7, based on neural network technique of degree of depth study, it discerns the vaporization electrolyte to deploy the neural network model to can realize transferring and look over through cloud ware or LAN passback to the computer end based on TCP or UDP agreement, when microprocessor module 9 detected hydrogen, had the sound of specific frequency or vaporization electrolyte, alarm module 10 sends out the police dispatch and looks over, and power protection module 11 cuts off the power supply, protects personnel's safety and the normal operating of equipment, communication module 12 utilizes wireless technology to transmit, with internet of things connection and transmission internet of things information, power module supplies power for lithium cell energy storage power station early warning system.

The protection scope of the present invention is not limited to the above examples, and the changes of the camera etc. based on the present invention are all within the protection scope.

Claims

1. The utility model provides a lithium cell energy storage power station early warning system, includes support (3), its characterized in that: be equipped with microcomputer device (1), hydrogen detection device (6), sound detection device (5), video acquisition device (7) on support (3), microcomputer device (1) is connected with hydrogen detection device (6), sound detection device (5), video acquisition device (7).

2. The early warning system of a lithium battery energy storage power station of claim 1, characterized in that: the microcomputer device (1) comprises a built-in microprocessor module (9), an alarm module (10), a power-off protection module (11), a communication module (12) and a power supply module (13).

3. The early warning system of a lithium battery energy storage power station of claim 1, characterized in that: the video capture device (7) comprises one or more cameras (8).

4. The early warning system of a lithium battery energy storage power station of claim 1, characterized in that: the battery compartment (4) is fixedly arranged at the inner side of the bracket (3).

5. The early warning system of a lithium battery energy storage power station of claim 4, characterized in that: and an outer cover (2) is arranged outside the support (3).