Lithium battery storage temperature monitoring system

Abstract

The invention relates to a lithium battery warehouse temperature monitoring system, relates to the field of lithium battery warehouse storage, and can quickly, efficiently and accurately carry out temperature monitoring on lithium batteries on a lithium battery shelf. The lithium battery storage temperature monitoring system comprises a controller and infrared thermal imaging equipment, the controller is in communication connection with the infrared thermal imaging equipment, and a detection area of the infrared thermal imaging equipment covers a lithium battery shelf; the infrared thermal imaging equipment is used for acquiring temperature information of the lithium batteries in the lithium battery shelf and sending the temperature information to the controller; and the controller is used for determining the lithium battery with the thermal runaway precursor on the lithium battery shelf according to the temperature information corresponding to the lithium battery shelf and carrying out emergency treatment.

Description

Technical Field

[0001] The present disclosure relates to the field of lithium battery warehouse storage, and in particular, to a lithium battery warehouse temperature monitoring system. Background Art

[0002] The existing temperature monitoring of lithium battery shelves is based on distributed temperature-sensitive optical fibers installed on the lithium battery shelves. The temperature-sensitive optical fibers are based on the backward Raman scattering effect. By analyzing the changes in the anti-Stokes light intensity in the optical fiber, the changes in the external temperature of the optical fiber are measured, thereby realizing the temperature monitoring of lithium batteries on the shelves. However, this method is limited by the size of lithium batteries and cannot detect the temperature of small-sized lithium batteries on the shelves. In addition, it is affected by the air environment where the lithium battery has thermal runaway, and cannot effectively detect the actual temperature of the lithium battery. Summary of the invention

[0003] The purpose of the present invention is to provide a lithium battery storage temperature monitoring system, which can quickly, efficiently and accurately monitor the temperature of lithium batteries on lithium battery shelves.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a lithium battery storage temperature monitoring system, comprising: a controller and an infrared thermal imaging device, wherein the controller is in communication connection with the infrared thermal imaging device, and the detection area of ​​the infrared thermal imaging device covers the lithium battery shelf; The infrared thermal imaging device is used to obtain temperature information of the lithium batteries in the lithium battery shelf and send it to the controller; The controller is used to determine the lithium batteries on the lithium battery shelf that have signs of thermal runaway according to the temperature information corresponding to the lithium battery shelf, and perform emergency processing.

[0005] Optionally, the temperature information includes the temperature of the lithium batteries in the lithium battery shelf; The controller is used to compare the temperature of each lithium battery on the lithium battery shelf with a target temperature threshold, and when the temperature of the lithium battery is greater than the target temperature threshold, determine that the lithium battery has a precursor to thermal runaway.

[0006] Optionally, it further comprises an ambient temperature sampling device, the ambient temperature sampling device comprises a temperature sensor and a temperature host, the temperature host is respectively connected to the temperature sensor and the controller in communication; The temperature sensor is used to sample the current ambient temperature, obtain a temperature sampling signal, and transmit the temperature sampling signal to the temperature host; The temperature host is used to obtain the target temperature threshold according to the temperature sampling signal, and send the target temperature threshold to the controller.

[0007] Optionally, the temperature host is used to lower the initial temperature threshold to obtain the target temperature threshold when the temperature sampling signal indicates that the ambient temperature reaches a preset first threshold; When the temperature sampling signal indicates that the ambient temperature has reached a preset second threshold, the initial temperature threshold is increased to obtain the target temperature threshold.

[0008] Optionally, a display device is further included, and the display device is communicatively connected to the controller; The controller is used to generate thermal map information corresponding to the lithium batteries in the lithium battery shelf according to the temperature information corresponding to each of the lithium batteries on the lithium battery shelf, and control the display device to display the thermal map information.

[0009] Optionally, there are multiple infrared thermal imaging devices, and the controller is communicatively connected to the multiple infrared thermal imaging devices respectively, and the total detection area of ​​the multiple infrared thermal imaging devices covers all lithium battery shelves.

[0010] Optionally, a first number of the infrared thermal imaging devices are respectively arranged on the shelf beams or shelf columns of the first lithium battery shelf, the detection direction of the first number of the infrared thermal imaging devices is toward the second lithium battery shelf, the detection range of each of the infrared thermal imaging devices covers a plurality of bins on the second lithium battery shelf, and the detection range of the first number of the infrared thermal imaging devices covers the second lithium battery shelf; A second number of the infrared thermal imaging devices are respectively arranged on the shelf beams or shelf columns of the second lithium battery shelf, the detection direction of the second number of the infrared thermal imaging devices is toward the third lithium battery shelf, the detection range of each of the infrared thermal imaging devices covers multiple storage locations on the third lithium battery shelf, and the detection range of the second number of the infrared thermal imaging devices covers the third lithium battery shelf.

[0011] Optionally, the detection range of each infrared thermal imaging device is determined by: Determining the field of view angle of the infrared thermal imaging device and the distance between the infrared thermal imaging device and its detection object; The detection range of the infrared thermal imaging device is determined according to the field of view angle and the distance.

[0012] Optionally, the controller is used to initiate a first level emergency measure when a lithium battery showing signs of thermal runaway appears on the lithium battery shelf, and to initiate a second level emergency measure when the first level emergency measure fails.

[0013] Optionally, the controller is used to generate location information when a lithium battery showing signs of thermal runaway appears on the lithium battery shelf, send the location information to maintenance personnel and issue an alarm, so that the maintenance personnel can handle the lithium battery showing signs of thermal runaway according to the location information.

[0014] Optionally, the controller is used to generate position information when a lithium battery showing signs of thermal runaway appears on the lithium battery shelf, and send the position information to the stacking robot, so that the stacking robot can transfer the lithium battery showing signs of thermal runaway to a predetermined safe area based on the position information.

[0015] Optionally, a fire detector is further included, and the fire detector is communicatively connected with the controller; The fire detector is used to detect fire information of the lithium battery shelf; The controller is used to determine whether a fire occurs according to the fire information of the lithium battery rack when the first level emergency measure is started, and determine that the first level emergency measure is invalid if a fire is determined to occur according to the fire information.

[0016] Optionally, the controller is used to send the location information and the fire situation information to a fire protection system, so that the fire protection system activates fire extinguishing equipment corresponding to the location information to put out the fire according to the fire situation information.

[0017] Optionally, the controller issues an alarm in at least one of the following ways: Trigger the speaker to play alarm audio, control the indicator light to flash, and push alarm text to the maintenance personnel's terminal device.

[0018] Through the above technical solution, the temperature information of lithium batteries in the lithium battery shelf is obtained through infrared thermal imaging equipment, and the controller connected to the infrared thermal imaging equipment determines the lithium batteries on the lithium battery shelf that have signs of thermal runaway according to the temperature information, and performs emergency treatment. The temperature of lithium batteries in the lithium battery shelf is monitored by infrared thermal imaging equipment, so as to measure the temperature quickly, efficiently and accurately, realize non-contact rapid temperature measurement, and is not limited by the size of lithium batteries and the type of shelves, which improves the early detection capability of fires in the lithium battery storage link and has a wide range of applicability.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1It is a schematic diagram of a lithium battery storage temperature monitoring system according to an exemplary embodiment of the present disclosure.

[0021] Figure 2 It is a schematic diagram of an existing lithium battery storage temperature monitoring system.

[0022] Figure 3a It is a schematic diagram showing the installation position of an infrared thermal imaging device according to an exemplary embodiment of the present disclosure.

[0023] Figure 3b is another schematic diagram showing the installation position of an infrared thermal imaging device according to an exemplary embodiment of the present disclosure.

[0024] Figure 4 is another schematic diagram of a lithium battery storage temperature monitoring system according to an exemplary embodiment of the present disclosure.

[0025] Figure 5 It is a workflow diagram of a lithium battery storage temperature monitoring system according to an exemplary embodiment of the present disclosure.

[0026] Description of Reference Numerals 1. Infrared thermal imaging temperature monitoring platform, 2. Infrared thermal imaging equipment, 3. Lithium battery shelves, 301 shelf columns, 302 shelf beams, 303 battery trays, 4. Switches, 5. Display devices, 6. Ambient temperature sampling devices, 7. Fire protection systems, 8. Fire extinguishing equipment. DETAILED DESCRIPTION

[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0028] In the related technology, there is a lithium battery storage temperature monitoring system using distributed optical fiber temperature measurement, such as Figure 2 As shown, the system includes battery storage temperature monitoring software, distributed fiber optic temperature measurement host, fire alarm and temperature-sensitive optical fiber, wherein the distributed fiber optic temperature measurement host is respectively connected to the battery storage temperature monitoring software, the fire alarm and the temperature-sensitive optical fiber communication, the temperature-sensitive optical fiber is suspended under the top plate of the lithium battery shelf, and the temperature of the lithium batteries in each bin on the lithium battery shelf is detected through the distributed temperature-sensitive optical fiber, so as to alarm through the fire alarm when the lithium battery shows signs of thermal runaway.

[0029] The inventor found that the technology has the following technical defects: 1. The temperature measurement principle of DTS (Distributed Temperature Sensing) is based on the back Raman scattering effect. It measures the change of the external temperature of the optical fiber by analyzing the change of the anti-Stokes light intensity in the optical fiber. However, it has certain requirements for spatial resolution, which is generally required to be ≥ 0.5 meters. Higher spatial resolution will be accompanied by higher costs and technical complexity.

[0030] 2. Because lithium batteries are only stored on the shelves for a short time, and the distributed temperature-sensing optical fiber is set under the top plate of the lithium battery shelf, it cannot be directly attached to the object to be measured for temperature detection, resulting in low reliability of the detection results.

[0031] 3. For open lithium battery shelves, the spaces above, below, left and right are connected, and the air flow in each compartment is good. When a lithium battery has thermal runaway, the released heat will expand the surrounding air, reduce the air density and move upward, and cannot gather around the temperature-sensing optical fiber. Affected by the air environment of the lithium battery thermal runaway, the DTS cannot effectively detect the actual temperature of the lithium battery.

[0032] 4. For small-sized lithium batteries, such as some lithium batteries with a minimum width of 13.5 mm, the heat that is a precursor to thermal runaway in such small-sized lithium batteries cannot cause a significant temperature rise in the 0.5-meter-long temperature-sensitive optical fiber, and the temperature of the small-sized lithium batteries on the shelf cannot be detected.

[0033] In view of this, the present disclosure provides a lithium battery storage temperature monitoring system, which can quickly, efficiently and accurately monitor the temperature of lithium batteries on lithium battery shelves.

[0034] Figure 1 FIG. 1 is a schematic diagram of a lithium battery storage temperature monitoring system according to an exemplary embodiment of the present disclosure. Figure 1 As shown, the lithium battery storage temperature monitoring system may include: a controller and an infrared thermal imaging device, the controller is in communication connection with the infrared thermal imaging device, and the detection area of ​​the infrared thermal imaging device covers all lithium battery shelves; A plurality of infrared thermal imaging devices, used to obtain temperature information of lithium batteries in the lithium battery rack and provide the temperature information to the controller; The controller is used to determine the lithium batteries on the lithium battery shelf that have signs of thermal runaway according to the temperature information corresponding to the lithium battery shelf, and perform emergency treatment.

[0035] It is worth noting that when a lithium battery shows signs of thermal runaway, its temperature will change. According to Stefan Boltzmann's law (i.e., the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature: E=σT 4), as the temperature rises, the lithium battery will radiate stronger infrared energy, and the infrared thermal imaging equipment can capture the infrared radiation energy on the surface of the lithium battery and convert it into corresponding temperature data. It can quickly capture the temperature changes and distribution in the entire detection area, and can provide accurate data information (such as single-point temperature, multi-point temperature, and temperature point coordinates). It is not limited by the type of lithium battery shelf, and can quickly measure the heating temperature of smaller-sized lithium batteries. It can detect abnormal situations in time, thereby improving the initial fire detection capability of lithium batteries in the storage link, striving for more fire advance, helping users to take timely measures to prevent losses, and greatly reducing the possibility of property losses.

[0036] For example, Figure 4 As shown, in the case where the controller is an infrared thermal imaging temperature monitoring platform 1, the infrared thermal imaging temperature monitoring platform 1 is connected to the infrared thermal imaging device 2 through the switch 4, and the total measurement area of ​​the infrared thermal imaging device 2 covers the lithium battery shelf 3. The infrared thermal imaging device 2 captures the infrared radiation energy on the surface of the lithium battery in the lithium battery shelf 3 and converts it into temperature information, and forwards the temperature information to the infrared thermal imaging temperature monitoring platform 1 through the switch 4. The infrared thermal imaging temperature monitoring platform 1 determines the lithium battery on the lithium battery shelf 3 that has thermal runaway precursors based on the temperature information corresponding to the lithium battery shelf 3, and performs emergency treatment.

[0037] In the disclosed embodiment, the surface temperature distribution of lithium batteries in the lithium battery shelf position is obtained in real time by infrared thermal imaging equipment, and a large amount of temperature data can be obtained in a short time, so as to quickly, efficiently and accurately measure the temperature, realize non-contact rapid temperature measurement, and is not limited by the size of lithium batteries and the type of shelves, thereby improving the temperature measurement speed and accuracy, and having a wide range of applicability. The controller determines the lithium battery with thermal runaway precursors based on the temperature information corresponding to each lithium battery shelf, and performs emergency treatment, thereby improving the initial fire detection capability in the lithium battery storage link, and real-time and quick monitoring of the initial fire in the lithium battery storage.

[0038] In order to facilitate those skilled in the art to better understand the lithium battery storage temperature monitoring system provided by the present invention, a detailed description is given below.

[0039] In a feasible implementation manner, there are multiple infrared thermal imaging devices, and the controller is communicatively connected to the multiple infrared thermal imaging devices respectively, and the total detection area of ​​the multiple infrared thermal imaging devices covers all lithium battery shelves.

[0040] For example, Figure 4As shown, in the case where the controller is an infrared thermal imaging temperature monitoring platform 1, the infrared thermal imaging temperature monitoring platform 1 is connected to multiple infrared thermal imaging devices 2 through a switch 4, and the total detection area of ​​the multiple infrared thermal imaging devices 2 covers all lithium battery shelves 3. Multiple infrared thermal imaging devices 2 capture the infrared radiation energy on the surface of lithium batteries in each position of each lithium battery shelf 3 and convert it into temperature information, and forward the temperature information to the infrared thermal imaging temperature monitoring platform 1 through the switch 4. The infrared thermal imaging temperature monitoring platform 1 determines the lithium batteries on each lithium battery shelf 3 that have thermal runaway precursors based on the temperature information corresponding to each lithium battery shelf 3, and performs emergency treatment.

[0041] In a feasible implementation manner, a first number of infrared thermal imaging devices are respectively arranged on the shelf beams or shelf columns of the first lithium battery shelf, the detection direction of the first number of infrared thermal imaging devices is toward the second lithium battery shelf, the detection range of each infrared thermal imaging device covers multiple storage locations on the second lithium battery shelf, and the detection range of the first number of infrared thermal imaging devices covers the second lithium battery shelf; A second number of infrared thermal imaging devices are respectively arranged on the shelf beams or shelf columns of the second lithium battery shelf, the detection directions of the second number of infrared thermal imaging devices are toward the third lithium battery shelf, the detection range of each infrared thermal imaging device covers multiple storage locations on the third lithium battery shelf, and the detection range of the second number of infrared thermal imaging devices covers the third lithium battery shelf.

[0042] It is worth noting that, in order to facilitate installation, the infrared thermal imaging device is preferably thin, such as a card type. The first number and the second number can be determined according to the detection range of each infrared thermal imaging device, or can be preset according to the temperature detection accuracy requirements, which is not limited in the present disclosure. In the embodiment of the present disclosure, the number and position of the infrared thermal imaging devices set on each lithium battery shelf are determined based on the detection surface size of the lithium battery shelf and the detection range of each infrared thermal imaging device. To ensure that the total detection range of all infrared thermal imaging devices covers all lithium battery shelves.

[0043] It is worth noting that the detection ranges of the first or second number of infrared thermal imaging devices may partially overlap, may overlap at the edges, or may not overlap. In the embodiment of the present disclosure, it is preferred that there is no overlap or edge overlap, and all lithium battery shelves are covered by the total detection range of the least number of infrared thermal imaging devices, thereby reducing installation costs.

[0044] For example, Figure 3aAs shown, taking two lithium battery shelves with a detection surface size of 1.15mx0.375m as an example, each lithium battery shelf includes a shelf column 301, a shelf beam 302 and a battery tray 303. The shelf column 301 and the shelf beam 302 constitute a storage space, and a battery tray 303 is placed in each storage space, and the battery tray 303 is used to place lithium batteries; the A row shelves and the B row shelves are both open lithium battery shelves 3, and lithium batteries are stored on each battery tray 303 on the two shelves (the lithium batteries stored on the B row shelves are not shown); the placement positions of the A row shelves and the B row shelves are as shown Figure 3a As shown, according to the detection surface size of the lithium battery shelf and the detection range of each infrared thermal imaging device, four infrared thermal imaging devices 2 are arranged on the middle shelf column 301 facing the A row shelf on the B row shelf, and the detection range of each infrared thermal imaging device 2 on the B row shelf covers multiple positions on the A row shelf, and the total detection area of ​​the four infrared thermal imaging devices 2 covers the A row shelf; accordingly, four infrared thermal imaging devices 2 are arranged on the middle shelf column 301 facing the B row shelf on the A row shelf, and the detection range of each infrared thermal imaging device 2 on the A row shelf covers multiple positions on the B row shelf, and the total detection area of ​​the four infrared thermal imaging devices 2 covers the B row shelf. The temperature of the A row shelf is monitored by the thermal imaging device installed on the B row shelf, and the temperature of the B row shelf is monitored by the thermal imaging device installed on the A row shelf.

[0045] For example, Figure 3b As shown, taking three lithium battery shelves with a detection surface size of 1.15mx0.375m as an example, each lithium battery shelf includes a shelf column 301, a shelf beam 302 and a battery tray 303. The shelf column 301 and the shelf beam 302 constitute a storage space, and a battery tray 303 is placed in each storage space, and the battery tray 303 is used to place lithium batteries; the A row shelves, the B row shelves and the C row shelves are all open lithium battery shelves 3, and lithium batteries are stored on each battery tray 303 on the three shelves (the lithium batteries stored on the B row shelves and the C row shelves are not shown); the placement positions of the A row shelves, the B row shelves and the C row shelves are as shown Figure 3bAs shown, according to the detection surface size of the lithium battery shelf and the detection range of each infrared thermal imaging device, four infrared thermal imaging devices 2 are arranged on the middle shelf column 301 on the B row shelf facing the A row shelf, the detection range of each infrared thermal imaging device 2 on the B row shelf covers multiple storage locations on the A row shelf, and the total detection area of ​​the four infrared thermal imaging devices 2 covers the A row shelf; accordingly, four infrared thermal imaging devices 2 are arranged on the middle shelf column 301 on the B row shelf facing the C row shelf, the detection range of each infrared thermal imaging device 2 on the B row shelf covers multiple storage locations on the C row shelf, and the total detection area of ​​the four infrared thermal imaging devices 2 covers the C row shelf; accordingly, four infrared thermal imaging devices 2 are arranged on the middle shelf column 301 on the A row shelf or the C row shelf facing the B row shelf, the detection range of each infrared thermal imaging device 2 on the A row shelf and the C row shelf covers multiple storage locations on the B row shelf, and the total detection area of ​​the four infrared thermal imaging devices 2 covers the B row shelf. The temperature of the A-row shelves and the C-row shelves are monitored respectively by thermal imaging devices installed in different directions on the B-row shelves, and the temperature of the B-row shelves is monitored by thermal imaging devices installed on the A-row shelves and the C-row shelves.

[0046] Accordingly, when the A row of shelves, the B row of shelves, the C row of shelves and the D row of shelves are parallel to each other and aligned in sequence, the above Figure 3b In the figure, the infrared thermal imaging equipment is installed on the B-row shelves. The infrared thermal imaging equipment is installed on the B-row shelves and the C-row shelves (i.e., the two middle shelves), and the infrared thermal imaging equipment is not installed on the A-row shelves and the B-row shelves (i.e., the remaining two shelves). The temperature of the A-row shelves and the C-row shelves is monitored by the thermal imaging equipment installed in different directions on the B-row shelves, and the temperature of the B-row shelves and the D-row shelves is monitored by the thermal imaging equipment installed in different directions on the C-row shelves.

[0047] In a feasible implementation manner, the detection range of each infrared thermal imaging device is determined by: Determine the field of view of the infrared thermal imaging device and the distance between the infrared thermal imaging device and its detection object; Determine the detection range of the infrared thermal imaging device based on the field of view angle and distance.

[0048] For example, the field of view angle of the infrared thermal imaging device and the distance between the infrared thermal imaging device and its detection object are determined, and the field of view angle and the distance are substituted into the following calculation formula to obtain the detection range of the infrared thermal imaging device. The calculation formula is: , Wherein, A represents the detection range of the infrared thermal imaging device, d represents the distance between the infrared thermal imaging device and its detection object, and θ represents the field of view of the infrared thermal imaging device.

[0049] According to the above calculation formula, under the same conditions, the detection range of the thermal imaging device can be adjusted by adjusting the field angle of the infrared thermal imaging device or the distance between the infrared thermal imaging device and the detection object. For example, the detection range of the thermal imaging device can be expanded by increasing the field angle of the infrared thermal imaging device or the distance between the infrared thermal imaging device and the detection object; the detection range of the thermal imaging device can be reduced by reducing the field angle of the infrared thermal imaging device or the distance between the infrared thermal imaging device and the detection object.

[0050] It should be understood that the larger the detection range of the external thermal imaging device is, the lower the accuracy of its detection result is. Therefore, the detection range of the external thermal imaging device can be adjusted according to the detection accuracy.

[0051] In one feasible implementation, the temperature information includes the temperature of lithium batteries in a lithium battery shelf; The controller is used to compare the temperature of each lithium battery on the lithium battery shelf with the target temperature threshold. When the temperature of the lithium battery is greater than the target temperature threshold, it is determined that the lithium battery has a precursor to thermal runaway.

[0052] For example, the controller compares the temperature of each lithium battery with the target temperature threshold. When the temperature of the lithium battery is greater than the target temperature threshold, it is determined that the lithium battery has a precursor to thermal failure, thereby quickly and accurately determining the lithium batteries on each lithium battery shelf that have a precursor to thermal failure.

[0053] In a feasible implementation, the lithium battery storage temperature monitoring system may further include an ambient temperature sampling device, the ambient temperature sampling device includes a temperature sensor and a temperature host, and the temperature host is respectively connected to the temperature sensor and the controller in communication; The temperature sensor is used to sample the current ambient temperature, obtain a temperature sampling signal, and transmit the temperature sampling signal to the temperature host; The temperature host is used to obtain a target temperature threshold according to a temperature sampling signal and send the target temperature threshold to the controller.

[0054] For example, Figure 4 As shown, the lithium battery storage temperature detection system also includes an ambient temperature sampling device 6, which is in communication connection with the infrared thermal imaging temperature monitoring platform 1. The temperature sensor in the ambient temperature sampling device 6 samples the current ambient temperature of the lithium battery shelf to obtain a temperature sampling signal. The temperature host in the ambient temperature sampling device 6 obtains a target temperature threshold value based on the temperature sampling signal, and sends the target temperature threshold value to the infrared thermal imaging temperature monitoring platform 1 in the form of an equal amount of digital signal.

[0055] In the embodiment of the present disclosure, the temperature threshold can be automatically adjusted according to the change of the ambient temperature, so as to avoid the false alarm of the lithium battery storage temperature detection system due to the change of season or ambient temperature, thereby improving the stability and accuracy of the lithium battery storage temperature detection system and ensuring the reliability of the alarm.

[0056] In a feasible implementation manner, the temperature host is used to reduce the initial temperature threshold to obtain a target temperature threshold when the temperature sampling signal indicates that the ambient temperature reaches a preset first threshold; When the temperature sampling signal indicates that the ambient temperature has reached a preset second threshold, the initial temperature threshold is increased to obtain a target temperature threshold.

[0057] It is worth noting that the preset first threshold value and the preset second threshold value can be preset according to the seasonal temperature or the ambient temperature, and the present disclosure does not limit this. Whether a seasonal change or an ambient temperature change occurs can be determined based on the preset first threshold value and the preset second threshold value. For example, when the temperature sampling signal indicates that the ambient temperature reaches the preset first threshold value, it is determined that the seasonal change is winter or the ambient temperature decreases, and the initial temperature threshold value is lowered to obtain the target temperature threshold value; when the temperature sampling signal indicates that the ambient temperature reaches the preset second threshold value, it is determined that the seasonal change is summer or the ambient temperature increases, and the initial temperature threshold value is increased to obtain the target temperature threshold value.

[0058] It is worth noting that the initial temperature threshold can be reduced or increased in a step-by-step manner according to the temperature adjustment step defined by the user or by the system default.

[0059] For example, when the storage location of lithium batteries is moved from a high temperature area (such as tropical or sub-hot areas) to a low temperature area (such as the Antarctic, Arctic or areas near the poles), the ambient temperature may drop from above 0°C to below 0°C. If the temperature threshold is not adjusted, the alarm signal will not be triggered when the lithium battery shows signs of thermal runaway, so the temperature threshold needs to be lowered. Accordingly, when the storage location of lithium batteries is moved from a low temperature area to a high temperature area, the temperature threshold needs to be increased.

[0060] For example, when the lithium battery storage location is changed to winter, the ambient temperature may drop from above 0°C to below 0°C. If the temperature threshold is not adjusted, the alarm signal will not be triggered when the lithium battery shows signs of thermal runaway. Therefore, the temperature threshold needs to be lowered. Accordingly, when the lithium battery storage location is changed to summer, the temperature threshold needs to be increased.

[0061] In a feasible implementation manner, the lithium battery storage temperature monitoring system further includes a display device, which is communicatively connected to the controller; The controller is used to generate thermal map information of the lithium batteries in the corresponding lithium battery shelf according to the temperature information corresponding to each lithium battery on the lithium battery shelf, and control the display device to display the thermal map information.

[0062] For example, Figure 4 As shown, the lithium battery storage temperature monitoring system also includes a display device 5, which is communicatively connected to the infrared thermal imaging temperature monitoring platform 1; the infrared temperature monitoring platform generates thermal map information of the lithium batteries in the corresponding lithium battery shelf 3 according to the temperature information corresponding to each lithium battery on the lithium battery shelf 3, and controls the display device 5 to display the thermal map information.

[0063] In the disclosed embodiment, the thermal map information of each lithium battery shelf is displayed through a display device, so that the user can intuitively observe the temperature status of each lithium battery, thereby processing the data, which is convenient for the user to interact, operate and judge.

[0064] In a feasible implementation, the controller is used to initiate the first level emergency measure when a lithium battery with a precursor to thermal runaway appears on the lithium battery shelf, and to initiate the second level emergency measure when the first level emergency measure fails.

[0065] In the disclosed embodiment, two levels of emergency measures are preset. The first level emergency measures are activated according to the location information, and the second level emergency measures are activated when the first level emergency measures fail. When the lithium battery shows signs of thermal runaway, the corresponding emergency measures can be activated, thereby realizing intelligent emergency response when the lithium battery shows signs of thermal runaway, greatly reducing the losses caused by thermal runaway of the lithium battery.

[0066] The first-level emergency measures in the disclosed embodiments may be to sound an alarm and notify maintenance personnel; or to control a stacking robot linked to a lithium battery storage temperature monitoring system to transfer lithium batteries that show signs of thermal runaway; or to control a stacking robot to transfer lithium batteries that show signs of thermal runaway while sounding an alarm and notifying maintenance personnel.

[0067] In a feasible implementation, the controller is used to generate location information when a lithium battery showing signs of thermal runaway appears on a lithium battery shelf, send the location information to maintenance personnel and issue an alarm, so that the maintenance personnel can handle the lithium battery showing signs of thermal runaway according to the location information.

[0068] For example, Figure 3a As shown, when lithium batteries with signs of thermal runaway appear in shelves in row A and / or row B, the controller generates the position coordinates of all lithium batteries with signs of thermal runaway, and sends all the position coordinates as position information to the terminal device of the maintenance personnel or controls the display device to display the position information for the maintenance personnel to view, and issues an alarm so that the maintenance personnel can handle the lithium batteries with signs of thermal runaway in a timely manner according to the position information.

[0069] In a feasible implementation manner, the controller may issue an alarm in at least one of the following ways: Trigger the speaker to play alarm audio, control the indicator light to flash, and push alarm text to the maintenance personnel's terminal device.

[0070] It should be understood that the controller may sound an alarm by, but is not limited to, triggering a speaker to play an alarm audio, controlling an indicator light to flash, and pushing an alarm text to a terminal device of a maintenance personnel.

[0071] In the embodiments of the present disclosure, when a lithium battery shows signs of thermal runaway, maintenance personnel can be alerted through a variety of alarm methods to improve the effectiveness of fire response.

[0072] In a feasible embodiment, the controller is used to generate location information when a lithium battery showing signs of thermal runaway appears on a lithium battery shelf, and send the location information to a stacking robot, so that the stacking robot can transfer the lithium battery showing signs of thermal runaway to a predetermined safe area based on the location information.

[0073] For example, Figure 3a As shown, when lithium batteries showing signs of thermal runaway appear in shelves in row A and / or shelves in row B, the controller generates the position coordinates of all lithium batteries showing signs of thermal runaway in shelves in row A and / or shelves in row B, and sends them to the stacking robot as position information, automatically dispatches the stacking robot to the warehouse with the corresponding position coordinates, grabs the lithium batteries showing signs of thermal runaway, and quickly transfers them to a predetermined safe area to isolate the fire source.

[0074] In the disclosed embodiment, the control of thermal runaway of lithium batteries is quickly responded to through linkage with the stacking robot. When lithium batteries showing signs of thermal runaway are determined on the shelf, the lithium batteries showing signs of thermal runaway are quickly transferred to a predetermined safe area to reduce the risk of fire spreading.

[0075] In a feasible implementation, the lithium battery storage temperature monitoring system further includes a fire detector, which is communicatively connected to the controller; A fire detector, used to detect fire information on the lithium battery shelf; The controller is used to determine whether a fire occurs according to the fire information of the lithium battery rack when the first level emergency measures are initiated, and to determine that the first level emergency measures are invalid when a fire is determined to occur according to the fire information.

[0076] It is worth noting that the fire detector may be a smoke detector or a temperature detector, which is not limited in the present disclosure.

[0077] For example, after initiating the first level emergency measures, the controller determines whether a fire has occurred based on the location information and the fire information detected by the fire detector, and in the event of a fire, determines that the first level emergency measures have failed, and initiates the second level emergency measures.

[0078] Alternatively, after initiating the first level emergency measures, the controller sends the location information to the fire protection system that is communicated with it. The fire protection system determines whether a fire has occurred based on the location information sent by the controller and the fire information detected by the fire detector. In the event of a fire, it determines that the first level emergency measures have failed, and then initiates the second level emergency measures.

[0079] In the embodiment of the present disclosure, two levels of emergency measures are used to respectively handle the two scenarios of thermal runaway precursors and fires of lithium batteries, and intelligently isolate the fire and extinguish the fire, which greatly reduces the losses caused by thermal runaway of lithium batteries.

[0080] In a feasible implementation manner, the controller is used to send the location information and fire information to the fire protection system, so that the fire protection system activates the fire extinguishing equipment corresponding to the location information to put out the fire according to the fire information.

[0081] It is worth noting that fire extinguishing equipment includes but is not limited to automatic fire extinguishing equipment, gas fire extinguishing equipment, dry powder fire extinguishing equipment, etc. There are many ways to reduce the spread of fire or eliminate the source of fire, thereby protecting people, property and the environment from the harm of fire.

[0082] For example, Figure 4 As shown, when the first-level emergency measures fail and the thermal runaway of the lithium battery causes the fire to spread and develop, the fire detectors in the area where the lithium battery is located will be activated to obtain fire information. The fire protection system 7 will issue a fire alarm based on the location information and fire information, and at the same time, the fire extinguishing equipment 8 at the corresponding position will be activated to put out the fire.

[0083] In the embodiment of the present disclosure, by initiating the second-level emergency measures in conjunction with the fire protection system, smoke from the fire can be reduced, the response speed to the fire can be increased, and the loss or harm caused by thermal failure of the lithium battery can be minimized.

[0084] like Figure 5 As shown in the figure, the complete operation process of the lithium battery storage temperature monitoring system can include: In step S101, the temperature information of the lithium batteries in each bin of each lithium battery shelf is obtained by using a plurality of infrared thermal imaging devices.

[0085] In step S102, the temperature of each lithium battery on each lithium battery shelf is compared with the target temperature threshold to determine the lithium battery that has a precursor to thermal runaway.

[0086] In step S103, the current environment temperature information is sampled by the temperature sensor, and the temperature host adjusts the initial temperature threshold according to the temperature sampling signal to obtain the target temperature threshold.

[0087] In step S104, the temperature of each lithium battery on each lithium battery shelf is compared with the target temperature threshold to determine the lithium battery with thermal runaway precursors. If yes, step S105 is executed; if not, the process returns to step S101.

[0088] In step S105, position information is generated and an alarm signal is output.

[0089] In step S106, the first level emergency measures are initiated.

[0090] In step S107, the fire information of each lithium battery shelf is detected through fire ignition.

[0091] In step S108, the fire protection system determines whether a fire has occurred based on the fire information and the location information. If so, step S109 is executed; if not, the process returns to step S107.

[0092] In step S109, the second season emergency measures are initiated.

[0093] The lithium battery storage temperature monitoring system in the embodiment of the present disclosure can monitor the temperature state of lithium batteries in lithium battery shelves through infrared thermal imaging equipment, and can adapt to different types of shelves, especially in open shelf environments, and can quickly measure the heating temperature of small-sized lithium batteries, effectively improving the initial fire detection capability of lithium batteries in the storage link, striving for more fire advance, thereby greatly reducing the possibility of property loss. And the surface temperature distribution of the object can be displayed through a display device, and the temperature value can be provided, which improves the temperature measurement speed and temperature measurement accuracy, and can obtain a large amount of temperature data in a short time. This makes real-time monitoring of the fire status more convenient and quick. And it is equipped with a variety of alarm modes, such as sound alarm, light flash alarm, information push, etc. Maintenance personnel can select appropriate alarm modes as needed to ensure that the alarm information can be conveyed to relevant personnel in a timely manner and respond to the fire in a timely manner. And according to the change of ambient temperature, the target temperature threshold can be automatically adjusted to avoid false alarms caused by changes in seasons or ambient temperature, thereby improving the stability and accuracy of the system and ensuring the reliability of the alarm.

[0094] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0095] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0096] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A lithium battery storage temperature monitoring system, characterized in that: include: A controller and an infrared thermal imaging device, wherein the controller is in communication connection with the infrared thermal imaging device, and the detection area of ​​the infrared thermal imaging device covers the lithium battery shelf; The infrared thermal imaging device is used to obtain temperature information of the lithium batteries in the lithium battery shelf and send it to the controller; The controller is used to determine the lithium batteries on the lithium battery shelf that have signs of thermal runaway according to the temperature information corresponding to the lithium battery shelf, and perform emergency processing.

2. The lithium battery storage temperature monitoring system according to claim 1, characterized in that: The temperature information includes the temperature of the lithium batteries in the lithium battery shelf; The controller is used to compare the temperature of each lithium battery on the lithium battery shelf with a target temperature threshold, and when the temperature of the lithium battery is greater than the target temperature threshold, determine that the lithium battery has a precursor to thermal runaway.

3. The lithium battery storage temperature monitoring system according to claim 2, characterized in that: It also includes an ambient temperature sampling device, the ambient temperature sampling device includes a temperature sensor and a temperature host, the temperature host is respectively connected to the temperature sensor and the controller in communication; The temperature sensor is used to sample the current ambient temperature, obtain a temperature sampling signal, and transmit the temperature sampling signal to the temperature host; The temperature host is used to obtain the target temperature threshold according to the temperature sampling signal, and send the target temperature threshold to the controller.

4. The lithium battery storage temperature monitoring system according to claim 3, characterized in that: The temperature host is used to reduce the initial temperature threshold to obtain the target temperature threshold when the temperature sampling signal indicates that the ambient temperature has reached a preset first threshold; When the temperature sampling signal indicates that the ambient temperature has reached a preset second threshold, the initial temperature threshold is increased to obtain the target temperature threshold.

5. The lithium battery storage temperature monitoring system according to claim 1, characterized in that: Also included is a display device, the display device is communicatively connected to the controller; The controller is used to generate thermal map information corresponding to the lithium batteries in the lithium battery shelf according to the temperature information corresponding to each of the lithium batteries on the lithium battery shelf, and control the display device to display the thermal map information.

6. The lithium battery storage temperature monitoring system according to claim 1, characterized in that: There are multiple infrared thermal imaging devices, and the controller is respectively connected to communicate with the multiple infrared thermal imaging devices. The total detection area of ​​the multiple infrared thermal imaging devices covers all lithium battery shelves.

7. The lithium battery storage temperature monitoring system according to claim 6, characterized in that: A first number of infrared thermal imaging devices are respectively arranged on the shelf beams or shelf columns of the first lithium battery shelf, the detection direction of the first number of infrared thermal imaging devices is toward the second lithium battery shelf, the detection range of each of the infrared thermal imaging devices covers a plurality of bins on the second lithium battery shelf, and the detection range of the first number of infrared thermal imaging devices covers the second lithium battery shelf; A second number of the infrared thermal imaging devices are respectively arranged on the shelf beams or shelf columns of the second lithium battery shelf, the detection direction of the second number of the infrared thermal imaging devices is toward the third lithium battery shelf, the detection range of each of the infrared thermal imaging devices covers multiple storage locations on the third lithium battery shelf, and the detection range of the second number of the infrared thermal imaging devices covers the third lithium battery shelf.

8. The lithium battery storage temperature monitoring system according to claim 7, characterized in that: The detection range of each of the infrared thermal imaging devices is determined as follows: Determining the field of view angle of the infrared thermal imaging device and the distance between the infrared thermal imaging device and its detection object; The detection range of the infrared thermal imaging device is determined according to the field of view angle and the distance.

9. The lithium battery storage temperature monitoring system according to any one of claims 1 to 8, characterized in that: The controller is used to start the first level emergency measures when the lithium battery shelf has a lithium battery with a precursor of thermal runaway, and to start the second level emergency measures when the first level emergency measures fail.

10. The lithium battery storage temperature monitoring system according to claim 9, characterized in that: The controller is used to generate location information when a lithium battery with a precursor to thermal runaway appears on the lithium battery shelf, send the location information to maintenance personnel and issue an alarm, so that the maintenance personnel can handle the lithium battery with a precursor to thermal runaway according to the location information.

11. The lithium battery storage temperature monitoring system according to claim 9, characterized in that: The controller is used to generate position information when a lithium battery with signs of thermal runaway occurs on the lithium battery shelf, and send the position information to the stacking robot, so that the stacking robot can transfer the lithium battery with signs of thermal runaway to a predetermined safe area according to the position information.

12. The lithium battery storage temperature monitoring system according to claim 11, characterized in that: Also comprising a fire detector, the fire detector being communicatively connected to the controller; The fire detector is used to detect fire information of the lithium battery shelf; The controller is used to determine whether a fire occurs according to the fire information of the lithium battery rack when the first level emergency measure is started, and determine that the first level emergency measure is invalid if a fire is determined to occur according to the fire information.

13. The lithium battery storage temperature monitoring system according to claim 12, characterized in that: The controller is used to send the location information and the fire information to the fire fighting system, so that the fire fighting system starts the fire extinguishing equipment corresponding to the location information to put out the fire according to the fire information.

14. The lithium battery storage temperature monitoring system according to claim 10, characterized in that: The controller issues an alarm in at least one of the following ways: Trigger the speaker to play alarm audio, control the indicator light to flash, and push alarm text to the maintenance personnel's terminal device.

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