Battery rack, battery temperature monitoring system and battery thermal runaway monitoring method

Abstract

The embodiment of the application provides a battery rack, a battery temperature monitoring system and a battery thermal runaway monitoring method, and relates to the technical field of battery heat monitoring. The battery rack comprises a battery rack body and a reflecting device. The battery rack body is provided with a plurality of placing positions, and each placing position is used for placing at least one battery. The reflecting device is arranged on at least one placing position and is used for reflecting part of infrared rays radiated by the battery on the placing position to a preset position. According to the battery rack provided by the embodiment of the application, the reflecting device is arranged on the placing position, the infrared thermal imaging monitoring equipment can accurately monitor the temperature distribution of the batteries placed in multiple placing positions within a certain range, and the abnormal battery can be quickly and accurately checked or handled in an emergency.

Description

Technical Field

[0001] This application relates to the field of battery thermal monitoring technology, and in particular to a battery rack, a battery temperature monitoring system, and a battery thermal runaway monitoring method. Background Technology

[0002] Lithium-ion batteries, as a crucial power source for modern technological development, are widely used in new energy vehicles, mobile electronic devices, and various energy storage systems. During automated production, large quantities of lithium-ion batteries are placed in one area for processes such as capacity testing, aging, and resting. The processed batteries are then typically stored centrally in automated warehouse racking systems. Due to the complex chemical reactions and high energy density within lithium-ion batteries, there are potential safety hazards during storage, potentially leading to battery combustion or even explosion. Therefore, safety monitoring of lithium-ion batteries on warehouse racks is the first and most crucial step in preventing accidents.

[0003] In related technologies, infrared thermal imaging monitoring equipment is used to monitor the temperature of lithium batteries in order to monitor and warn of fire risks associated with lithium batteries.

[0004] However, the aforementioned infrared thermal imaging monitoring equipment has a limited monitoring range and many blind spots. Moreover, it can only monitor a limited number of batteries, making it difficult to accurately monitor the temperature distribution of batteries in multiple locations simultaneously. In severe cases, this can lead to missing the optimal time for fire extinguishing. Summary of the Invention

[0005] Based on this, this application provides a battery rack, a battery temperature monitoring system, and a battery thermal runaway monitoring method to solve the problem that existing infrared thermal imaging monitoring equipment is unable to accurately monitor the temperature distribution of batteries in multiple locations simultaneously.

[0006] In a first aspect, this application provides a battery holder, including a battery holder body and a reflective device;

[0007] The battery rack body has multiple placement positions, each of which is used to place at least one battery.

[0008] At least one placement position is provided with a reflective device, which is used to reflect a portion of the infrared radiation emitted by the battery in the placement position to a preset position.

[0009] In one possible implementation, the reflective device includes a reflective component and at least one connecting component, the reflective component having a reflective surface;

[0010] The reflective assembly is connected to the battery holder body via a connecting component, with the reflective surface facing the corresponding placement position.

[0011] In one possible implementation, the reflective assembly includes a reflector and at least one first connector, with the reflective surface located on the reflector;

[0012] The first connector is attached to the side of the reflector away from the reflective surface, and the first connector is connected to the connecting assembly.

[0013] In one possible implementation, the reflective surface has at least one arcuate segment along its upper edge, the arcuate segment protruding toward the placement position.

[0014] In one possible implementation, the connecting component includes a second connector and a third connector, with the second connector connected to the first connector.

[0015] The third connector is connected to the battery holder body, and the second connector is rotatably mounted on the third connector to adjust the angle of the reflective surface.

[0016] In one possible implementation, the connecting component further includes a fastener, the second connector has a first connecting portion, and the third connector has a second connecting portion;

[0017] At least one of the first connecting part and the second connecting part is a slot, and the fastener passes through the slot to connect the first connecting part and the second connecting part;

[0018] The first connecting part moves relative to the second connecting part along the extension direction of the slot to adjust the distance between the reflector and the placement position, and the fastener locks the reflector in the current position.

[0019] In one possible implementation, the battery rack body includes at least two legs and multiple placement racks, with the two legs arranged at intervals.

[0020] Each shelf is connected to two legs on both sides, and the placement position is located on the shelf.

[0021] In one possible implementation, at least one limiting element is provided on the placement rack to restrict the movement of the battery in the placement position.

[0022] In one possible implementation, multiple placement racks are spaced apart along the horizontal and vertical directions, respectively.

[0023] Secondly, this application also provides a battery temperature monitoring system, including an infrared thermal imaging monitoring device and any of the battery racks provided in the first aspect. The infrared thermal imaging monitoring device is set at a preset position and is used to collect part of the infrared radiation emitted by the battery at the placement position or to collect part of the infrared radiation reflected by the reflective device at the placement position.

[0024] Thirdly, this application also provides a battery thermal runaway monitoring method, which employs any of the battery temperature monitoring systems provided in the second aspect, and includes the following steps:

[0025] The infrared thermal imaging monitoring equipment collects part of the infrared radiation emitted by the battery at the placement position to obtain the first analysis data, and the temperature distribution information of the collection area is obtained based on the first analysis data.

[0026] Temperature distribution information is compared with temperature thresholds to assess the safety status of batteries within the data collection area.

[0027] In one possible implementation, temperature distribution information of the collection area is obtained based on the first analysis data, including obtaining the area and location of the high-temperature area based on the temperature values ​​of multiple preset points within the collection area, and obtaining the rate of change of the area of ​​the high-temperature area within a preset time period.

[0028] In one possible implementation, temperature distribution information is compared with temperature thresholds to assess the safety status of the battery within the acquisition area, including comparing temperature distribution information within the acquisition area with a first temperature threshold and a second temperature threshold.

[0029] When the temperature distribution information is within the first temperature threshold range, the safety status of the battery in the collection area is considered normal.

[0030] When the temperature distribution information is between the first temperature threshold and the second temperature threshold, the safety status of the battery in the collection area is determined to be a warning, and an alarm signal is issued.

[0031] When the temperature distribution information exceeds the second temperature threshold range, the safety status of the battery in the acquisition area is determined to be dangerous, and an alarm signal is issued.

[0032] In one possible implementation, when the safety status of the battery in the acquisition area is determined to be a warning, the thermal behavior of the battery in the warning position is checked.

[0033] If the battery's thermal behavior does not worsen, the inspection is complete.

[0034] If the battery's thermal behavior worsens, emergency measures should be taken.

[0035] In one possible implementation, when the safety status of the batteries in the data collection area is determined to be dangerous, emergency measures are taken for the batteries in dangerous locations.

[0036] The battery rack, battery temperature monitoring system, and battery thermal runaway monitoring method provided in this application include a battery rack body and a reflective device. Multiple placement positions are provided on the battery rack body, with at least one battery placed in each position. A reflective device is installed at at least one placement position to reflect a portion of the infrared radiation emitted by the battery to a preset location, where it can be captured by an infrared thermal imaging monitoring device. Therefore, the battery rack provided in this application, by incorporating reflective devices at the placement positions, enables the infrared thermal imaging monitoring device to accurately monitor the temperature distribution of batteries in multiple placement positions simultaneously within a certain range. This allows for rapid and accurate inspection or emergency handling of batteries exhibiting abnormalities. Furthermore, the application of the reflective device increases the monitoring range of the infrared thermal imaging monitoring device, reduces blind spots, and allows for the monitoring of an increased number of batteries. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a partial structural schematic diagram of the battery rack provided in an embodiment of this application;

[0039] Figure 2 for Figure 1 Schematic diagram of the reflective device;

[0040] Figure 3 for Figure 2 A schematic diagram showing the connection relationship between the reflective device and part of the support frame;

[0041] Figure 4 for Figure 2 Side view in the middle;

[0042] Figure 5 for Figure 4 Exploded view of the second and third connecting parts;

[0043] Figure 6 A flowchart of a battery thermal runaway monitoring method provided in an embodiment of this application.

[0044] Figure label:

[0045] 10: Battery;

[0046] 100: Battery holder body;

[0047] 101: Placement position;

[0048] 110: Support leg;

[0049] 120: Storage rack;

[0050] 121: Limiting component;

[0051] 200: Reflective device;

[0052] 201: Reflective surface;

[0053] 2011: Curved surface segment;

[0054] 210: Reflective components;

[0055] 211: Reflector;

[0056] 212: First connector;

[0057] 220: Connecting component;

[0058] 221: Second connector;

[0059] 2211: First connecting part;

[0060] 222: Third connector;

[0061] 2221: Second connecting part;

[0062] 223: Fasteners;

[0063] 300: Infrared thermal imaging monitoring equipment. Detailed Implementation

[0064] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and apparatus consistent with some aspects of this application as detailed in the appended claims.

[0065] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0066] As mentioned in the background section, the relevant technologies for monitoring the temperature of transported lithium battery boxes have high requirements for the battery placement inside the transport vehicle. If the lithium battery is located in a closed container of the transport vehicle or is affected by obstructions, thermal imaging will not be able to monitor it accurately. Furthermore, there are many blind spots in the layout of lithium batteries on shelves, which makes the monitoring requirements of infrared thermal imaging even higher. This monitoring method is difficult to meet the requirements of full-range monitoring.

[0067] Furthermore, this monitoring method mainly captures the smoke emitted by the lithium battery dynamically and then identifies the temperature to achieve monitoring. At this time, thermal runaway may have already occurred inside the lithium battery, and its fire monitoring response is slow. Moreover, some lithium batteries do not emit gas when thermal runaway occurs. For example, thermal runaway occurs when the internal temperature of the lithium battery rises rapidly during overcharging. Therefore, this monitoring method cannot accurately monitor and warn of this situation, resulting in missing the best time to extinguish the fire.

[0068] To address the aforementioned problems in the prior art, this application provides a battery rack, a battery temperature monitoring system, and a battery thermal runaway monitoring method. The battery rack provided in this application includes a battery rack body and a reflective device. Multiple placement positions are provided on the battery rack body, with at least one battery placed in each position. A reflective device is installed at at least one placement position to reflect a portion of the infrared radiation emitted by the battery in that position to a preset location, where it can be captured by an infrared thermal imaging monitoring device. In other words, by providing reflective devices at the placement positions, the infrared thermal imaging monitoring device can simultaneously and accurately monitor the temperature distribution of batteries in multiple placement positions within a certain range, enabling rapid and accurate inspection or emergency handling of abnormal batteries. Furthermore, the application of this reflective device increases the monitoring range of the infrared thermal imaging monitoring device, reduces blind spots, and allows for the monitoring of more batteries.

[0069] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0070] Firstly, please refer to Figures 1-5 As shown, this application embodiment provides a battery holder, including a battery holder body 100 and a reflective device 200.

[0071] The battery holder body 100 is provided with a plurality of placement positions 101, each placement position 101 being used to place at least one battery 10.

[0072] At least one placement position 101 is provided with a reflector 200, which is used to reflect part of the infrared light emitted by the battery 10 on the placement position 101 to a preset position.

[0073] In this embodiment, the battery 10 is made by winding or stacking positive and negative electrode sheets and a separator. Its shape is roughly rectangular, such as a blade battery. After the battery 10 is made, it needs to undergo processes such as capacity testing, aging and settling.

[0074] In this embodiment, the battery rack body 100 is used to install the reflector 200 and place the battery 10. It can be a frame-like or shell-like structure. The battery rack body 100 can be provided with a number of placement positions 101. Each placement position 101 can be arranged in layers along the vertical direction or arranged side by side along the horizontal direction. The placement position 101 is used to place at least one battery 10. That is, the placement position 101 can support at least part of the bottom of the battery 10. Multiple batteries 10 can also be placed side by side on the placement position 101. The specific structure and size can be determined according to the shape of the battery 10.

[0075] The reflective device 200 in this embodiment is used to reflect part of the infrared rays radiated by the battery 10 on the placement position 101 to a preset position. It can be a reflector, a reflector mirror or other device. The reflective device 200 can be installed above the placement position 101, can be directly connected to the battery rack body 100, or can be connected to other support components.

[0076] The preset position can be located on one side of the battery rack body 100. The preset position is used to place the infrared thermal imaging monitoring device 300, such as an infrared thermal imager. The scanning part of the infrared thermal imaging monitoring device 300 faces each placement position 101 on the battery rack body 100. Since the scanning range of the infrared thermal imaging monitoring device 300 is limited, under the action of the reflector 200, part of the infrared light radiated by the battery 10 on the placement position 101 can be reflected to the monitoring device 300.

[0077] It should be noted that the preset position can be determined according to the actual size, placement height and width of the battery 10, etc., and is not specifically limited in this embodiment.

[0078] Specifically, such as Figure 1 As shown, two battery rack bodies 100 can be arranged at intervals. Two rows of placement positions 101 are arranged horizontally along one battery rack body 100. Figure 1 As shown in the Y-axis direction, five layers of placement positions 101 are arranged vertically, such as along... Figure 1 As shown in the Z-axis direction, the infrared thermal imaging monitoring device 300 is then installed on another battery rack body 100. The scanning lens on the infrared thermal imaging monitoring device 300 faces each placement position 101 on the previous battery rack body 100. From bottom to top, the infrared thermal imaging monitoring device 300 is roughly located in the middle of the second layer. From bottom to top, the third to fifth layers are equipped with reflective devices 200. The infrared thermal imaging monitoring device 300 observes the reflective devices 200 on the upper three layers of placement positions 101 from an upward angle. In this way, the infrared thermal imaging monitoring device 300 can clearly monitor the temperature of the batteries 10 on the two rows of five layers, a total of ten placement positions 101.

[0079] It should be noted that when multiple batteries 10 are placed side by side on the placement position 101, the infrared thermal imaging monitoring device 300 will monitor the temperature of the upper surface of each battery 10 as much as possible.

[0080] Compared to the absence of a reflective device 200 on the placement position 101, the application of the battery rack in this embodiment of the application enables the infrared thermal imaging monitoring device 300 to accurately monitor the temperature distribution of batteries 10 in multiple placement positions simultaneously within a certain range by setting a reflective device 200 on the placement position 101. This allows for quick and accurate inspection or emergency handling of batteries 10 that are malfunctioning. Furthermore, the application of the reflective device 200 increases the monitoring range of the infrared thermal imaging monitoring device 300, reduces blind spots, and increases the number of batteries 10 that can be monitored.

[0081] Therefore, the battery rack provided in this embodiment includes a battery rack body 100 and a reflector 200. By setting multiple placement positions 101 on the battery rack body 100, at least one battery 10 is placed in each placement position 101. By setting a reflector 200 on at least one placement position 101, the reflector 200 reflects part of the infrared light emitted by the battery 10 on the placement position 101 to a preset position so that it can be collected by an infrared thermal imaging monitoring device 300 located at the preset position. That is, by setting a reflector 200 on the placement position 101, the infrared thermal imaging monitoring device 300 can accurately monitor the temperature distribution of batteries 10 in multiple placement positions at the same time within a certain range, so as to quickly and accurately check or handle abnormal batteries 10. Moreover, the application of the reflector 200 can increase the monitoring range of the infrared thermal imaging monitoring device 300, reduce the monitoring blind spot, and increase the number of batteries 10 monitored.

[0082] In one possible design, the reflective device 200 includes a reflective component 210 and at least one connecting component 220, the reflective component 210 having a reflective surface 201.

[0083] The reflective component 210 is connected to the battery holder body 100 via the connecting component 220, and the reflective surface 201 faces the corresponding placement position 101.

[0084] Specifically, such as Figures 2-4 As shown, the reflector assembly 210 can be composed of a reflector plate and connectors, and can have a plate-like or shell-like structure. One side surface of the reflector assembly 210 is a reflective surface 201. The connecting assembly 220 is used to connect the reflector assembly 210 to the battery holder body 100, and can be composed of connectors and fasteners.

[0085] For example, two connecting components 220 are connected to each other on both sides of the reflective component 210. The side of the two connecting components 220 facing away from the reflective component 210 is connected to the battery holder body 100, and the reflective surface 201 on the reflective component 210 faces the corresponding placement position 101, so as to stably connect the reflective component 210 to the battery holder body 100.

[0086] Of course, the reflective component 210 can also be connected to the battery holder body 100 by more or fewer connecting components 220. The specific structure of the reflective component 210 and the connecting component 220 can be determined according to actual needs, and no specific limitation is made in this embodiment.

[0087] Furthermore, in this embodiment, the reflective assembly 210 includes a reflector 211 and at least one first connector 212, with the reflective surface 201 located on the reflector 211.

[0088] The first connector 212 is connected to the side of the reflector 211 facing away from the reflective surface 201, and the first connector 212 is connected to the connecting assembly 220.

[0089] Specifically, continue as Figures 2-4 As shown, the reflector 211 has a thin plate structure. The first connector 212 can be a block, shell, or plate structure, such as a wooden connector. The first connector 212 can be connected to a part of the surface of the reflector 211 facing away from the reflective surface 201 by means of bonding, screwing, snapping, etc. Under the support of the first connector 212, the rigidity of the reflector 211 can be strengthened, and the shaking can be reduced during use.

[0090] For example, two first connectors 212 are connected opposite to each other on both sides of the reflector 211, and the two first connectors 212 are correspondingly connected to the two connecting components 220. In this way, the reflector 211 can be stably connected to the battery holder body 100.

[0091] Furthermore, in this embodiment, the reflective surface 201 has at least one arc segment 2011 along its upper edge, and the arc segment 2011 protrudes toward the placement position 101.

[0092] Specifically, such as Figure 4 As shown, the arc segment 2011 can be a partially arc surface, with the arc surface protruding towards the placement position 101, such as along... Figure 4 The reflective surface 201 is divided into three continuous arc segments 2011 along the X-axis, and each arc segment 2011 has a different radius. Moreover, the curvature of the reflective surface 201 can be adjusted by bending it by hand or by machine.

[0093] In this way, more infrared rays emitted by the battery 10 at placement 101 can be reflected to the preset position. The reflector 211 can reflect all batteries 10 in the monitoring blind spots, further optimizing the monitoring effect while controlling costs and achieving full coverage of the monitoring range.

[0094] Of course, the arc segment 2011 can also be set to other types. The number, radius, etc. of the arc segment 2011 can be determined according to the distance between the actual placement position 101 and the preset position. In this embodiment, there are no too many restrictions.

[0095] Furthermore, in this embodiment, the connecting component 220 includes a second connector 221 and a third connector 222, with the second connector 221 connected to the first connector 212.

[0096] The third connector 222 is connected to the battery holder body 100, and the second connector 221 is rotatably mounted on the third connector 222 to adjust the angle of the reflective surface 201.

[0097] Specifically, such as Figure 4 , Figure 5 As shown, both the second connector 221 and the third connector 222 can be plate-shaped or block-shaped. The second connector 221 can be connected to one side of the first connector 212 by means of bonding, screwing, snapping, etc. The second connector 221 can be connected to the third connector 222 by bolts, rotating structures, etc. The third connector 222 can also be connected to the battery holder body 100 by means of bonding, screwing, snapping, etc. In this way, the reflector 211 can be deflected towards or away from the preset position, such as along... Figure 4 The positive or negative deflection of the W in the middle is used to adjust the angle of the reflective surface 201 relative to the horizontal plane, that is, to adjust the orientation of the reflective surface 201.

[0098] In some embodiments, the connecting component 220 further includes a fastener 223, a second connector 221 having a first connecting portion 2211, and a third connector 222 having a second connecting portion 2221.

[0099] At least one of the first connecting portion 2211 and the second connecting portion 2221 is a slot, and the fastener 223 passes through the slot to connect the first connecting portion 2211 and the second connecting portion 2221.

[0100] The first connecting part 2211 moves relative to the second connecting part 2221 along the extension direction of the slot to adjust the distance between the reflector 211 and the placement position 101, and the fastener 223 locks the reflector 211 in the current position.

[0101] Specifically, continue as Figure 4 , Figure 5 As shown, fastener 223 is used to connect and lock the first connecting portion 2211 and the second connecting portion 2221, and can be a bolt or nut. Exemplarily, both the first connecting portion 2211 and the second connecting portion 2221 are slots, the length direction of which extends towards or away from the placement position 101, such as along... Figure 5 As shown in the Z-axis direction, the fastener 223 passes through two slots. When the fastener 223 is not locked, the first connecting part 2211 can rotate or move relative to the second connecting part 2221 to adjust the deflection center position of the reflector 211. When the fastener 223 is locked, the first connecting part 2211 and the second connecting part 2221 are fixed together, thereby restricting the reflector 211 to the current position.

[0102] Of course, the second connector 221 and the third connector 222 can also be connected by other structures to ensure that they can rotate and move relative to each other. This embodiment does not impose too many restrictions on this.

[0103] In some embodiments, the battery holder body 100 includes at least two legs 110 and a plurality of placement racks 120, with the two legs 110 arranged at intervals.

[0104] Each shelf 120 is connected to two legs 110 on both sides, and the placement position 101 is located on the shelf 120.

[0105] Specifically, such as Figure 1 As shown, the support leg 110 is used to support the foundation, and it can be a column-shaped or rod-shaped structure. The placement frame 120 is used to support the battery 10, and it can be a frame-shaped or plate-shaped structure, with the placement position 101 located on the placement frame 120.

[0106] For example, the three legs 110 are arranged at lateral intervals, such as along... Figure 1 As shown in the Y-axis direction, the placement rack 120 is arranged with five layers at intervals along the vertical direction, such as along the Y-axis. Figure 1 As shown in the Z-axis direction, the placement rack 120 also has two rows arranged laterally, such as along the Z-axis. Figure 1 As shown in the Y-axis direction, and with both ends of each placement rack 120 connected to adjacent support legs 110, a total of ten placement positions 101 in two rows and five layers are formed. Each placement position 101 can hold a number of batteries 10 at intervals along the horizontal direction. Figure 1 As shown in the X-axis direction.

[0107] Of course, the battery rack body 100 can also be composed of more legs 110 and placement racks 120. The specific number and structure of the legs 110 and placement racks 120 can be determined according to actual needs, and no restrictions are imposed in this embodiment.

[0108] Furthermore, in this embodiment, at least one limiting member 121 is provided on the placement rack 120, and the limiting member 121 is used to restrict the movement of the battery 10 on the placement position 101.

[0109] Specifically, in combination Figure 1 , Figure 3 As shown, the limiting member 121 is used to restrict the movement of the battery 10, and it can be a block-shaped, plate-shaped, or other structure. Exemplarily, the limiting member 121 has a slot adapted to the battery, and two limiting members 121 are connected opposite each other on both sides of the placement rack 120, such as along... Figure 3 As shown in the Y-axis direction, the two limiting members 121 correspond to one battery 10 on the placement position 101, that is, the two limiting members 121 limit one battery 10.

[0110] Of course, the limiting member 121 can also be replaced by other limiting components. The specific structure and quantity of the limiting member 121 can be determined according to the actual shape of the battery 10. In this embodiment, no restrictions are imposed.

[0111] Furthermore, in this embodiment, multiple placement racks 120 are arranged at intervals along the horizontal and vertical directions, respectively.

[0112] Specifically, such as Figure 1 As shown, the shelf 120 is arranged with five layers at intervals along the vertical direction, such as along... Figure 1 As shown in the Z-axis direction, the placement rack 120 also has two rows arranged laterally, such as along the Z-axis. Figure 1 As shown in the Y-axis direction, and with both ends of each placement rack 120 connected to adjacent support legs 110, a total of ten placement positions 101 in two rows and five layers are formed. Each placement position 101 can hold a number of batteries 10 at intervals along the horizontal direction. Figure 1 As shown in the X-axis direction.

[0113] This allows the infrared thermal imaging monitoring device 300 to accurately monitor as many batteries 10 as possible. Of course, the mounting rack 120 can also be arranged in other directions, depending on the monitoring angle of the infrared thermal imaging monitoring device 300. This embodiment does not impose too many restrictions.

[0114] Secondly, this application also provides a battery temperature monitoring system, including an infrared thermal imaging monitoring device 300 and a battery rack provided in any of the above embodiments. The infrared thermal imaging monitoring device 300 is set at a preset position and is used to collect part of the infrared radiation emitted by the battery 10 on the placement position 101 or to collect part of the infrared radiation reflected by the reflector 200 on the placement position 101.

[0115] The structure of the battery rack has been described in detail in the above embodiments, and will not be repeated here.

[0116] It is understood that the battery temperature monitoring system provided in this application embodiment, by configuring a battery rack, including a battery rack body 100 and a reflector 200, sets multiple placement positions 101 on the battery rack body 100, so that at least one battery 10 is placed in each placement position 101, and sets a reflector 200 on at least one placement position 101, so that the reflector 200 reflects part of the infrared light emitted by the battery 10 on the placement position 101 to a preset position, so that it can be collected by the infrared thermal imaging monitoring device 300 located at the preset position. That is, by setting a reflector 200 on the placement position 101, the infrared thermal imaging monitoring device 300 can accurately monitor the temperature distribution of batteries 10 in multiple placement positions at the same time within a certain range, so as to quickly and accurately check or handle the abnormal batteries 10. Moreover, the application of the reflector 200 can increase the monitoring range of the infrared thermal imaging monitoring device 300, reduce the monitoring blind spot, and increase the number of batteries 10 monitored.

[0117] Thirdly, such as Figure 6As shown, this application embodiment also provides a battery thermal runaway monitoring method, which uses the battery temperature monitoring system provided in any of the above embodiments, and includes the following steps:

[0118] S400: The infrared thermal imaging monitoring device 300 collects part of the infrared radiation emitted by the battery 10 on the placement position 101 to obtain the first analysis data, and obtains the temperature distribution information of the collection area based on the first analysis data.

[0119] Specifically, a portion of the infrared radiation emitted from the upper surface of each battery 10 on the placement position 101 can be collected by an infrared thermal imager to obtain first analysis data. Based on the first analysis data, the temperature distribution information of the collection area can be obtained. The collection area can be a rectangular area composed of the upper surfaces of each battery 10, and the temperature distribution information can be the temperature information and position information of preset points on the upper surface of each battery 10.

[0120] S500: Compare the temperature distribution information with the temperature threshold to assess the safety status of battery 10 within the acquisition area.

[0121] Specifically, by comparing the temperature information of preset points on the upper surface of each battery 10 with the corresponding temperature threshold, the safety status of the battery 10 in the collection area is evaluated, thereby quickly identifying the battery 10 and its location where temperature abnormalities occur, facilitating timely inspection or emergency handling.

[0122] The temperature threshold can be determined by conducting a destructive test on the battery 10, including at least one of an overcharge test, a needle penetration test, a crush test, or a short circuit test. Second analysis data is obtained based on the destructive test, and the temperature threshold is determined based on the second analysis data.

[0123] Of course, the impact of environmental factors on the abnormality of battery 10 can also be considered, such as ambient temperature, to obtain a more suitable temperature threshold, so as to accurately judge the thermal runaway behavior of battery 10.

[0124] Furthermore, determining the temperature threshold based on the second analysis data includes obtaining at least a first threshold and a second threshold based on the second analysis data, wherein the second temperature threshold is greater than the first temperature threshold.

[0125] For example, the first temperature threshold can be the highest temperature, area size, and rate of change of the high-temperature area when the battery 10 has a slight abnormality, and the second temperature threshold can be the highest temperature, area size, and rate of change of the high-temperature area when the battery 10 has a significant abnormality.

[0126] This facilitates accurate determination of the stage of thermal runaway behavior of battery 10. Of course, more thresholds can be set; the number of thresholds and their specific values ​​can be determined according to actual needs, and this embodiment does not impose excessive restrictions.

[0127] The battery thermal runaway monitoring method provided in this application embodiment can accurately monitor the temperature distribution of batteries 10 in multiple placement positions simultaneously within a certain range using an infrared thermal imaging monitoring device 300, so as to quickly and accurately inspect or handle any abnormal batteries 10.

[0128] In some embodiments, temperature distribution information of the collection area is obtained based on the first analysis data, including obtaining the area and location of the high-temperature area based on the temperature values ​​of multiple preset points within the collection area, and obtaining the rate of change of the area of ​​the high-temperature area within a preset time period.

[0129] Specifically, by monitoring and analyzing the temperature values ​​at multiple preset points within the collection area, the area and location of high-temperature regions can be obtained. For example, the sum of the temperature values ​​at preset points exceeding a certain threshold represents the area of ​​the high-temperature region, and the location of these preset points is the location of the high-temperature region. In this way, the size and location of abnormal parts of battery 10 can be monitored.

[0130] Furthermore, by continuously monitoring and analyzing the temperature values ​​at multiple preset points within the collection area over a preset time period, the rate of change of the high-temperature area can be calculated. This allows for the monitoring of the speed of abnormal changes in battery 10, enabling early warning.

[0131] It should be noted that the number, location, and duration of preset points can be determined according to actual monitoring needs, and no specific limitations are made in this embodiment.

[0132] Furthermore, in this embodiment, the temperature distribution information is compared with the temperature threshold to assess the safety status of the battery 10 within the collection area, including comparing the temperature distribution information within the collection area with a first temperature threshold and a second temperature threshold.

[0133] When the temperature distribution information is within the first temperature threshold range, the safety status of battery 10 in the acquisition area is determined to be normal.

[0134] When the temperature distribution information is greater than or equal to the range between the first temperature threshold and the second temperature threshold, the safety status of battery 10 in the acquisition area is determined to be a warning, and an alarm signal is issued.

[0135] When the temperature distribution information exceeds the second temperature threshold, the safety status of battery 10 in the acquisition area is determined to be dangerous, and an alarm signal is issued.

[0136] In other words, the safety status of battery 10 is divided into three levels: normal, warning, and danger. When the temperature distribution information within the acquisition area is within the first temperature threshold range, it indicates that all batteries 10 within that acquisition area are in a normal state. When the temperature distribution information within the acquisition area is between the first and second temperature thresholds, it indicates that the temperature of some batteries 10 within that acquisition area is abnormal, and an alarm signal is issued so that management personnel can inspect the abnormal batteries 10. When the temperature distribution information within the acquisition area exceeds the second temperature threshold range, it indicates that the temperature of some batteries 10 within that acquisition area is out of control, and an alarm signal is issued so that emergency handling can be carried out on the abnormal batteries 10.

[0137] Furthermore, in this embodiment, when the safety status of the battery 10 in the acquisition area is determined to be a warning, the thermal behavior of the battery 10 in the warning position is checked.

[0138] If the thermal behavior of battery 10 does not worsen, the check is complete.

[0139] If the thermal behavior of battery 10 worsens, emergency measures should be taken.

[0140] Specifically, when the safety status of battery 10 in the data collection area is in the warning state, the fully managed personnel should promptly check the thermal behavior of battery 10 in the warning position. If battery 10 does not show further signs of aggravation, that is, the thermal behavior of battery 10 is within a controllable range, the check is completed. If the thermal behavior of battery 10 intensifies, that is, the thermal behavior of battery 10 is out of control, the fully managed personnel can use the main unit in the fire control room to operate the stacker crane to carry out emergency handling of the out-of-control battery 10, such as relocation and fire extinguishing.

[0141] Furthermore, in this embodiment, when the safety status of the battery 10 in the collection area is determined to be dangerous, emergency treatment is carried out on the battery 10 in the dangerous position.

[0142] In other words, the thermal behavior of battery 10 in the data collection area is directly out of control. At this time, the main unit in the fire control room will immediately operate the stacker crane to handle the out-of-control battery 10 in an emergency until the alarm signal is eliminated.

[0143] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0144] It should be understood that this application is not limited to the precise structures described above and shown in the appendix, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery holder, characterized in that, Includes a battery holder body (100) and a reflector (200). The battery rack body (100) includes at least two legs (110) and multiple placement racks (120). The two legs (110) are arranged at intervals, and each placement rack (120) is connected to the two legs (110) on both sides. The multiple placement racks (120) are arranged at intervals along the horizontal and vertical directions. The battery rack body (100) is provided with multiple placement positions (101). The placement positions (101) are located on the placement racks (120), and each placement position (101) is used to place at least one battery (10). At least one of the placement positions (101) is provided with the reflective device (200), the reflective device (200) includes a reflective component (210), the reflective component (210) has a reflective surface (201), the reflective component (210) includes a reflector plate (211), the reflective surface (201) is located on the reflector plate (211), the reflective surface (201) has at least three arc segments (2011) arranged in a transverse direction along the upper edge, and the radius of each arc segment (2011) is different, the arc segments (2011) protrude toward the placement position (101), and the reflective device (200) is used to reflect part of the infrared light radiated by the battery (10) on the placement position (101) to a preset position; The reflective device (200) includes at least one connecting component (220), the reflective component (210) is connected to the battery holder body (100) through the connecting component (220), and the reflective surface (201) faces the corresponding placement position (101). The connecting assembly (220) includes a second connector (221) and a third connector (222). The third connector (222) is connected to the battery holder body (100). The second connector (221) is rotatably mounted on the third connector (222) to adjust the angle of the reflective surface (201). The connecting assembly (220) further includes a fastener (223), the second connector (221) has a first connecting portion (2211), the third connector (222) has a second connecting portion (2221), at least one of the first connecting portion (2211) and the second connecting portion (2221) is a slot, and the fastener (223) passes through the slot to connect the first connecting portion (2211) and the second connecting portion (2221). The first connecting part (2211) moves relative to the second connecting part (2221) along the extension direction of the slot to adjust the distance between the reflector (211) and the placement position (101), and the fastener (223) is locked to restrict the reflector (211) to the current position.

2. The battery holder according to claim 1, characterized in that, The reflective assembly (210) further includes at least one first connector (212), which is connected to the side of the reflector (211) away from the reflective surface (201) and is connected to the connecting assembly (220).

3. The battery holder according to claim 2, characterized in that, The second connector (221) is connected to the first connector (212).

4. The battery holder according to claim 3, characterized in that, At least one limiting member (121) is provided on the placement rack (120), the limiting member (121) is used to restrict the movement of the battery (10) on the placement position (101).

5. A battery temperature monitoring system, characterized in that, Includes an infrared thermal imaging monitoring device (300) and a battery rack as described in any one of claims 1 to 4, wherein the infrared thermal imaging monitoring device (300) is disposed at the preset position and is used to collect a portion of the infrared radiation emitted by the battery (10) on the placement position (101) or to collect a portion of the infrared radiation reflected by the reflector (200) on the placement position (101).

6. A method for monitoring battery thermal runaway, characterized in that, The battery temperature monitoring system as described in claim 5 includes the following steps: The infrared thermal imaging monitoring device (300) collects a portion of the infrared radiation emitted by the battery (10) on the placement position (101) to obtain first analysis data, and obtains temperature distribution information of the collection area based on the first analysis data; The temperature distribution information is compared with the temperature threshold to assess the safety status of the battery (10) within the collection area.

7. The battery thermal runaway monitoring method according to claim 6, characterized in that, The step of obtaining temperature distribution information of the collection area based on the first analysis data includes obtaining the area and location of the high-temperature area based on the temperature values ​​of multiple preset points within the collection area, and obtaining the rate of change of the area of ​​the high-temperature area within a preset time period.

8. The battery thermal runaway monitoring method according to claim 6, characterized in that, The step of comparing the temperature distribution information with the temperature threshold to assess the safety status of the battery (10) in the collection area includes comparing the temperature distribution information in the collection area with a first temperature threshold and a second temperature threshold. When the temperature distribution information is within the first temperature threshold range, the safety status of the battery (10) in the collection area is determined to be normal; When the temperature distribution information is within the range between the first temperature threshold and the second temperature threshold, the safety status of the battery (10) in the collection area is determined to be a warning, and an alarm signal is issued; When the temperature distribution information exceeds the second temperature threshold range, the safety status of the battery (10) in the acquisition area is determined to be dangerous, and an alarm signal is issued.

9. The battery thermal runaway monitoring method according to claim 8, characterized in that, When the safety status of the battery (10) in the collection area is determined to be a warning, the thermal behavior of the battery (10) in the warning position is checked. If the thermal behavior of the battery (10) does not worsen, the inspection is complete; If the thermal behavior of the battery (10) worsens, emergency measures shall be taken.

10. The battery thermal runaway monitoring method according to claim 8, characterized in that, When it is determined that the safety status of the battery (10) in the collection area is dangerous, emergency treatment is carried out on the battery (10) in the dangerous position.

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