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

Abstract

The embodiment of the invention provides a battery rack, a battery temperature monitoring system and a battery thermal runaway monitoring method, and relates to the technical field of battery thermal monitoring, the battery rack comprises a battery rack body and a light 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. At least one placing position is provided with a light reflecting device, and the light reflecting device 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 invention, the light reflecting devices are arranged on the placing positions, so that the infrared thermal imaging monitoring equipment can accurately monitor the temperature distribution conditions of the batteries at a plurality of placing positions at the same time within a certain range, and the abnormal batteries can be quickly and accurately checked or subjected to emergency treatment.

Description

Technical Field

[0001] The present application relates to the technical field of battery thermal monitoring, and in particular to a battery rack, a battery temperature monitoring system, and a battery thermal runaway monitoring method. Background Art

[0002] As an important power source for the development of modern science and technology, lithium batteries are widely used in new energy vehicles, mobile electronic devices and various energy storage systems. In the automated production process, a large number of lithium batteries are placed in one area for capacity division, aging and static processes. The processed batteries are generally stored in automated three-dimensional warehouse shelves. Due to the complex chemical reactions and high energy density inside lithium batteries, there are potential safety hazards during storage, which may lead to the risk of battery combustion or even explosion. Therefore, the safety monitoring of lithium batteries on warehouse shelves is the first and most important step to prevent accidents.

[0003] In the related art, the temperature of lithium batteries is monitored by infrared thermal imaging monitoring equipment in order to monitor and warn of the fire risk of lithium batteries.

[0004] However, the above-mentioned infrared thermal imaging monitoring equipment has a limited monitoring range, and there are many monitoring blind spots. In addition, the number of monitored batteries is limited, and it is difficult to accurately monitor the temperature distribution of batteries in multiple positions at the same time. In serious cases, it may lead to missing the best fire extinguishing time. Summary of the invention

[0005] Based on this, the present 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 difficult to accurately monitor the temperature distribution of batteries in multiple placement positions at the same time.

[0006] In a first aspect, the present application provides a battery rack, comprising a battery rack body and a reflective device;

[0007] The battery rack body is provided with a plurality of placement positions, each placement position 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 part of the infrared rays radiated by the battery on the placement position to a preset position.

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

[0010] The reflective component is connected to the battery rack body through the connecting component, and the reflective surface faces the corresponding placement position.

[0011] In a possible implementation, the reflective assembly includes a reflective plate and at least one first connecting member, and the reflective surface is located on the reflective plate;

[0012] The first connecting member is connected to a side of the reflective plate away from the reflective surface, and the first connecting member is connected to the connecting assembly.

[0013] In a possible implementation, the upper edge of the reflective surface has at least one arc segment, and the arc segment protrudes toward the placement position.

[0014] In a possible implementation, the connection assembly includes a second connection member and a third connection member, and the second connection member is connected to the first connection member;

[0015] The third connecting member is connected to the battery rack body, and the second connecting member is rotatably arranged on the third connecting member to adjust the angle of the reflective surface.

[0016] In a possible implementation, the connection assembly further includes a fastener, the second connection member has a first connection portion, and the third connection member has a second connection portion;

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

[0018] The first connecting portion moves relative to the second connecting portion along the extending direction of the slot hole to adjust the distance between the reflector and the placement position, and the locking fastener restricts the reflector at the current position.

[0019] In a possible implementation, the battery rack body includes at least two legs and a plurality of placement racks, and the two legs are arranged at intervals;

[0020] Both sides of each placement rack are correspondingly connected to two legs, and the placement position is located on the placement rack.

[0021] In a possible implementation, at least one limiting member is disposed on the placement rack, and the limiting member is used to limit the movement of the battery at the placement position.

[0022] In a possible implementation, a plurality of placement racks are spaced apart in the horizontal and vertical directions respectively.

[0023] In a second aspect, the present application also provides a battery temperature monitoring system, comprising an infrared thermal imaging monitoring device and any one of the battery racks provided in the first aspect, wherein the infrared thermal imaging monitoring device is arranged at a preset position and is used to collect part of the infrared rays radiated by the battery at the placement position or to collect part of the infrared rays reflected by the reflective device at the placement position.

[0024] In a third aspect, the present application further provides a battery thermal runaway monitoring method, which adopts any one of the battery temperature monitoring systems provided in the second aspect, and comprises the following steps:

[0025] Collecting part of the infrared rays radiated by the battery at the placement position by infrared thermal imaging monitoring equipment to obtain first analysis data, and acquiring temperature distribution information of the collection area according to the first analysis data;

[0026] The temperature distribution information is compared with the temperature threshold to evaluate the safety status of the battery in the acquisition area.

[0027] In a possible implementation, temperature distribution information of the acquisition area is obtained according to the first analysis data, including obtaining the area and position of the high temperature area according to temperature values ​​of multiple preset points in the acquisition area, and obtaining the rate of change of the area of ​​the high temperature area within a preset time.

[0028] In a possible implementation, comparing the temperature distribution information with a temperature threshold to evaluate the safety status of the battery in the acquisition area includes comparing the temperature distribution information in 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, it is concluded that the safety status of the battery in the acquisition area is normal;

[0030] When the temperature distribution information is within the range between the first temperature threshold and the second temperature threshold, it is concluded that the safety status of the battery in the acquisition area is a warning, and an alarm signal is issued;

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

[0032] In a possible implementation, when it is determined that the safety status of the battery in the acquisition area is a warning, the thermal behavior of the battery at the warning position is checked;

[0033] If the thermal behavior of the battery does not increase, the inspection is completed;

[0034] If the thermal behavior of the battery intensifies, emergency treatment is performed.

[0035] In a possible implementation, when it is determined that the safety status of the batteries in the collection area is dangerous, emergency treatment is performed on the batteries in the dangerous position.

[0036] The battery rack, battery temperature monitoring system and battery thermal runaway monitoring method provided by the present application, the battery rack includes a battery rack body and a reflective device, by setting multiple placement positions on the battery rack body, at least one battery is placed in each placement position, by setting a reflective device on at least one placement position, the reflective device reflects part of the infrared rays radiated by the battery on the placement position to a preset position, so that it can be collected by the infrared thermal imaging monitoring equipment at the preset position. Therefore, the battery rack provided by the present application, by setting a reflective device on the placement position, can enable the infrared thermal imaging monitoring equipment to accurately monitor the temperature distribution of batteries at multiple placement positions within a certain range at the same time, so as to quickly and accurately inspect or deal with abnormal batteries in an emergency, and the application of the reflective device can increase the monitoring range of the infrared thermal imaging monitoring equipment, reduce the monitoring blind area, and increase the number of monitored batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1 A schematic diagram of a portion of the structure of a battery rack provided in an embodiment of the present application;

[0039] Figure 2 for Figure 1 A schematic diagram of the structure of the middle reflective device;

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

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

[0042] Figure 5 for Figure 4 An exploded view of the second connecting member and the third connecting member;

[0043] Figure 6 A flow chart of a battery thermal runaway monitoring method provided in an embodiment of the present application.

[0044] Reference numerals:

[0045] 10: Battery;

[0046] 100: battery rack body;

[0047] 101: placement position;

[0048] 110: outrigger;

[0049] 120: Placement rack;

[0050] 121: limiter;

[0051] 200: Reflective device;

[0052] 201: reflective surface;

[0053] 2011: Camber segment;

[0054] 210: reflective components;

[0055] 211: reflector;

[0056] 212: first connecting member;

[0057] 220: connection components;

[0058] 221: second connecting member;

[0059] 2211: first connection portion;

[0060] 222: third connecting member;

[0061] 2221: second connection portion;

[0062] 223: Fasteners;

[0063] 300: Infrared thermal imaging monitoring equipment. DETAILED DESCRIPTION

[0064] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of methods and devices consistent with some aspects of the present application as detailed in the appended claims.

[0065] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] As mentioned in the background technology section, the related technology monitors the temperature of lithium battery boxes during transportation, which has high requirements for the battery position layout 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 accurately. In addition, there are many blind spots for monitoring the layout of lithium batteries on the shelves, which makes the monitoring requirements of infrared thermal imaging higher. This monitoring method is difficult to meet full-range monitoring.

[0067] In addition, this monitoring method mainly dynamically captures the smoke ejected by the lithium battery, and then identifies the temperature for monitoring. At this time, thermal runaway may have occurred inside the lithium battery, and its fire monitoring response is slow. In addition, some lithium batteries will not eject gas during thermal runaway. For example, when overcharged, the internal temperature of the lithium battery rises rapidly and thermal runaway occurs. Therefore, this monitoring method cannot accurately monitor and warn of this situation, resulting in missing the best time to extinguish the fire.

[0068] In view of the above problems existing in the prior art, the present application provides a battery rack, a battery temperature monitoring system and a battery thermal runaway monitoring method. The battery rack provided in the present application includes a battery rack body and a reflective device. By setting multiple placement positions on the battery rack body, at least one battery is placed in each placement position. By setting a reflective device on at least one placement position, the reflective device reflects part of the infrared rays radiated by the battery on the placement position to a preset position so that it can be collected by the infrared thermal imaging monitoring equipment at the preset position. That is, by setting a reflective device on the placement position, the infrared thermal imaging monitoring equipment can accurately monitor the temperature distribution of batteries at multiple placement positions within a certain range at the same time, so as to quickly and accurately inspect or handle abnormal batteries in an emergency. Moreover, the application of the reflective device can increase the monitoring range of the infrared thermal imaging monitoring equipment, reduce the monitoring blind area, and increase the number of monitored batteries.

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

[0070] First, please refer to Figure 1-Figure 5 As shown, an embodiment of the present application provides a battery rack, including a battery rack body 100 and a reflective device 200.

[0071] A plurality of placement positions 101 are provided on the battery rack body 100 , and each placement position 101 is used to place at least one battery 10 .

[0072] A reflective device 200 is disposed on at least one placement position 101 , and the reflective device 200 is used to reflect part of the infrared rays radiated by the battery 10 on the placement position 101 to a preset position.

[0073] The battery 10 in this embodiment is made of positive and negative electrode sheets and separators by winding or stacking, and its appearance is roughly rectangular, such as a blade battery. After the battery 10 is manufactured, it needs to undergo processes such as capacity division, aging and standing.

[0074] The battery rack body 100 in this embodiment is at least used to install the reflective device 200 and place the battery 10. It can be a frame-shaped, shell-shaped or other structure. A plurality of placement positions 101 can be set on the battery rack body 100. 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 appearance 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 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 supporting components.

[0076] Among them, the preset position can be located on one side of the battery rack body 100, and the preset position is used to place an infrared thermal imaging monitoring device 300, such as an infrared thermal imager, etc. The scanning part on the infrared thermal imaging monitoring device 300 is facing 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 reflective device 200, part of the infrared rays radiated from 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 size, placement height and width of the actual battery 10, and is not specifically limited in this embodiment.

[0078] Specifically, if Figure 1 As shown, two battery rack bodies 100 can be arranged at intervals, and two rows of placement positions 101 are arranged horizontally along the upper edge of one battery rack body 100, such as along Figure 1 As shown in the Y-axis direction, five layers of placement positions 101 are arranged in the vertical direction, such as along Figure 1 As shown in the middle Z-axis direction, the infrared thermal imaging monitoring device 300 is installed on another battery rack body 100, and 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 in the middle position of the second layer. From bottom to top, the third to fifth layers are provided 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 perspective. In this way, the infrared thermal imaging monitoring device 300 can clearly monitor the temperature of the batteries 10 on the ten placement positions 101 in two columns and five layers.

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

[0080] Compared with not setting the reflective device 200 on the placement position 101, the application of the battery rack in the embodiment of the present application, by setting the reflective device 200 on the placement position 101, can enable the infrared thermal imaging monitoring equipment 300 to 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 inspect or emergency handle abnormal batteries 10, and the application of the reflective device 200 can increase the monitoring range of the infrared thermal imaging monitoring equipment 300, reduce the monitoring blind area, and increase the number of monitored batteries 10.

[0081] Therefore, the battery rack provided in the embodiment of the present application includes a battery rack body 100 and a reflecting device 200. By setting a plurality of placement positions 101 on the battery rack body 100, at least one battery 10 is placed in each placement position 101. By setting a reflecting device 200 on at least one placement position 101, the reflecting device 200 reflects part of the infrared rays radiated by the battery 10 on the placement position 101 to a preset position so as to be collected by the infrared thermal imaging monitoring device 300 at the preset position. That is, by setting the reflecting device 200 on the placement position 101, the infrared thermal imaging monitoring device 300 can accurately monitor the temperature distribution of batteries 10 at multiple placement positions within a certain range at the same time, so as to quickly and accurately inspect or deal with abnormal batteries 10 in an emergency. Moreover, the application of the reflecting device 200 can increase the monitoring range of the infrared thermal imaging monitoring device 300, reduce the monitoring blind area, and increase the number of monitored batteries 10.

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

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

[0084] Specifically, Figure 2-Figure 4 As shown, the reflective assembly 210 may be composed of a reflective plate and a connector, which may be in a plate-shaped, shell-shaped or other structure, and one side surface of the reflective assembly 210 is a reflective surface 201. The connector 220 is used to connect the reflective assembly 210 to the battery rack body 100, and may be composed of a connector combined with a fastener.

[0085] Exemplarily, the two connecting components 220 are relatively connected to the two sides of the reflective component 210, and the side of the two connecting components 220 facing away from the reflective component 210 is connected to the battery rack 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 rack body 100.

[0086] Of course, the reflective assembly 210 may be connected to the battery rack body 100 by a greater or lesser number of connecting assemblies 220. The specific structures of the reflective assembly 210 and the connecting assembly 220 may be determined according to actual needs and are not specifically limited in this embodiment.

[0087] Furthermore, in this embodiment, the reflective assembly 210 includes a reflective plate 211 and at least one first connecting member 212 , and the reflective surface 201 is located on the reflective plate 211 .

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

[0089] Specifically, continue as Figure 2-Figure 4 As shown, the reflector 211 is a thin plate-like structure, and the first connecting member 212 can be a block-shaped, shell-shaped, plate-like structure, etc., such as a wooden connecting block. The first connecting member 212 can be connected to the partial surface of the reflector 211 on the side away from the reflective surface 201 by bonding, screwing, clamping, etc. Under the support of the first connecting member 212, the rigidity of the reflector 211 can be strengthened, and the shaking can be reduced during use.

[0090] Exemplarily, the two first connecting members 212 are relatively connected to the two sides of the reflector 211, and the two first connecting members 212 are correspondingly connected to the two connecting components 220. In this way, the reflector 211 can be stably connected to the battery rack body 100.

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

[0092] Specifically, Figure 4 As shown, the arc segment 2011 may be a partial arc surface, and the arc surface protrudes toward the side of the placement position 101, such as along Figure 4 The X-axis direction divides the reflective surface 201 into three continuous arc segments 2011, and the radius of each arc segment 2011 is different. In addition, the curvature of the reflective surface 201 can be adjusted by self-bending or machine bending.

[0093] In this way, more infrared rays radiated by the battery 10 on the placement position 101 can be reflected to the preset position. The reflector 211 can reflect all batteries 10 in the monitoring blind area, further optimizing the monitoring effect on the basis of 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 of the actual placement position 101 relative to the preset position, etc., and no excessive restrictions are made in this embodiment.

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

[0096] The third connecting member 222 is connected to the battery rack body 100 , and the second connecting member 221 is rotatably disposed on the third connecting member 222 to adjust the angle of the reflective surface 201 .

[0097] Specifically, Figure 4 , Figure 5 As shown, the second connecting member 221 and the third connecting member 222 can both be in a plate-like or block-like structure. The second connecting member 221 can be connected to one side of the first connecting member 212 by bonding, screwing, or clamping. The second connecting member 221 can be connected to the third connecting member 222 by bolts, a rotating structure, or the like. The third connecting member 222 can also be connected to the battery rack body 100 by bonding, screwing, or clamping. In this way, the reflector 211 can be deflected in a direction close to or away from a preset position, such as along Figure 4 The positive or negative deflection of W in the middle is used to adjust the angle of the reflecting surface 201 relative to the horizontal plane, that is, to adjust the orientation of the reflecting surface 201.

[0098] In some embodiments, the connection assembly 220 further includes a fastener 223 , the second connection member 221 has a first connection portion 2211 , and the third connection member 222 has a second connection portion 2221 .

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

[0100] The first connection portion 2211 moves relative to the second connection portion 2221 along the extending direction of the slot to adjust the distance between the reflector 211 and the placement position 101 , and the locking fastener 223 restricts the reflector 211 to the current position.

[0101] Specifically, continue as Figure 4 , Figure 5 As shown, the fastener 223 is used to connect and lock the first connection part 2211 and the second connection part 2221, which can be a bolt and a nut. Exemplarily, the first connection part 2211 and the second connection part 2221 are both slots, and the length direction of the slots extends in a direction close to 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 connection portion 2211 can be rotated or moved relative to the second connection portion 2221 to adjust the deflection center position of the reflector 211. When the fastener 223 is locked, the first connection portion 2211 and the second connection portion 2221 are fixed to each other, thereby limiting the reflector 211 to the current position.

[0102] Of course, the second connecting member 221 and the third connecting member 222 are also connected by other structures to ensure that the two can be relatively rotated and moved and adjusted. This embodiment does not impose too many restrictions on this.

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

[0104] Two sides of each placement rack 120 are correspondingly connected to two legs 110 , and the placement position 101 is located on the placement rack 120 .

[0105] Specifically, Figure 1 As shown, the legs 110 are used to support the foundation, and they can be columnar, rod-shaped structures, etc. The placement rack 120 is used to support the battery 10 , and they can be frame-shaped, plate-shaped structures, etc. The placement position 101 is located on the placement rack 120 .

[0106] Exemplarily, the three legs 110 are arranged in a lateral spacing, such as along Figure 1 As shown in the Y-axis direction, the placement rack 120 is arranged in five layers at intervals along the vertical direction. Figure 1 As shown in the Z-axis direction, the placement rack 120 is also arranged in two rows along the horizontal direction, such as along Figure 1 As shown in the Y-axis direction, the two ends of each placement rack 120 are respectively connected to the adjacent legs 110, thereby forming two rows and five layers of ten placement positions 101, each placement position 101 can be spaced to place a plurality of batteries 10 in the horizontal direction, such as along Figure 1 The X-axis direction is shown.

[0107] Of course, the battery rack body 100 may also be composed of a greater number of legs 110 and racks 120. The specific number and structure of the legs 110 and racks 120 may be determined according to actual needs and are not excessively restricted in this embodiment.

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

[0109] Specifically, combined Figure 1 , Figure 3 As shown, the limiting member 121 is used to limit the movement of the battery 10, and it can be a block, plate, or other structure. Exemplarily, the limiting member 121 has a slot adapted to the battery, and two limiting members 121 are connected to 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 may also be replaced by other limiting members. The specific structure and quantity of the limiting member 121 may be determined according to the actual shape of the battery 10 and are not excessively restricted in this embodiment.

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

[0112] Specifically, Figure 1 As shown, the placement rack 120 is arranged in five layers at intervals along the vertical direction, such as along Figure 1 As shown in the Z-axis direction, the placement rack 120 is also arranged in two rows along the horizontal direction, such as along Figure 1 As shown in the Y-axis direction, the two ends of each placement rack 120 are respectively connected to the adjacent legs 110, thereby forming two rows and five layers of ten placement positions 101, each placement position 101 can be spaced to place a plurality of batteries 10 in the horizontal direction, such as along Figure 1 The X-axis direction is shown.

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

[0114] In the second aspect, an embodiment of the present application also provides a battery temperature monitoring system, including an infrared thermal imaging monitoring device 300 and a battery rack provided by 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 rays radiated by the battery 10 on the placement position 101 or collect part of the infrared rays reflected by the reflective device 200 on the placement position 101.

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

[0116] It can be understood that the battery temperature monitoring system provided in the embodiment of the present application is configured by configuring a battery rack, including a battery rack body 100 and a reflective device 200, and by setting a plurality of placement positions 101 on the battery rack body 100, so that each placement position 101 is placed with at least one battery 10, and by setting a reflective device 200 on at least one placement position 101, the reflective device 200 reflects part of the infrared rays radiated by the battery 10 on the placement position 101 to a preset position so as to be collected by the infrared thermal imaging monitoring device 300 at the preset position. That is, by setting the reflective device 200 on the placement position 101, the infrared thermal imaging monitoring device 300 can accurately monitor the temperature distribution of batteries 10 at multiple placement positions within a certain range at the same time, so as to quickly and accurately inspect or deal with abnormal batteries 10 in an emergency, and the application of the reflective device 200 can increase the monitoring range of the infrared thermal imaging monitoring device 300, reduce the monitoring blind area, and increase the number of monitored batteries 10.

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

[0118] S400 , collecting part of the infrared rays radiated by the battery 10 on the placement position 101 through the infrared thermal imaging monitoring device 300 to obtain first analysis data, and acquiring temperature distribution information of the collection area according to the first analysis data.

[0119] Specifically, an infrared thermal imager can be used to collect part of the infrared rays radiated from the upper surface of each battery 10 on the placement position 101 to obtain first analysis data, and temperature distribution information of the collection area can be obtained based on the first analysis data, wherein the collection area can be a rectangular area composed of the upper surfaces of each battery 10, and the temperature distribution information can be temperature information and position information of preset points on the upper surface of each battery 10, etc.

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

[0121] Specifically, by comparing the temperature information of preset points on the surface of each battery 10 with the corresponding temperature threshold, the safety status of the battery 10 in the collection area is evaluated, so that the battery 10 and the part with abnormal temperature can be quickly found, which is convenient for timely inspection or emergency treatment.

[0122] Among them, the temperature threshold can be determined based on a destructive test on the battery 10, the destructive test includes at least one of an overcharge test, a puncture test, an extrusion test or a short circuit test, and the 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 influence of environmental factors on the abnormality of the battery 10 , such as the ambient temperature, may also be considered to comprehensively derive a more appropriate temperature threshold so as to accurately judge the thermal runaway behavior of the battery 10 .

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

[0125] For example, the first temperature threshold may be the maximum temperature, area size, and rate of change of the high temperature area of ​​the high temperature area when a slight abnormality occurs in the battery 10, and the second temperature threshold may be the maximum temperature, area size, and rate of change of the high temperature area of ​​the high temperature area when an obvious abnormality occurs in the battery 10.

[0126] In this way, it is convenient to accurately judge which stage the thermal runaway behavior of the battery 10 is in. Of course, more thresholds can be set, and the number of thresholds and the specific values ​​of each threshold can be determined according to actual needs, and are not excessively restricted in this embodiment.

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

[0128] In some embodiments, obtaining temperature distribution information of the acquisition area according to the first analysis data includes obtaining the area and position of the high temperature area according to temperature values ​​of multiple preset points in the acquisition area, and obtaining the rate of change of the area of ​​the high temperature area within a preset time.

[0129] Specifically, by monitoring and analyzing the temperature values ​​of multiple preset points in the acquisition area, the area and position of the high temperature area can be obtained. For example, the sum of the points corresponding to the preset point temperature values ​​exceeding a certain threshold is the area of ​​the high temperature area, and the positions of these preset points are the positions of the high temperature area. In this way, the area size and position of the abnormal part of the battery 10 can be monitored.

[0130] Moreover, by continuously monitoring and analyzing the temperature values ​​of multiple preset points in the acquisition area within a preset time, the rate of change of the area of ​​the high temperature area can be calculated. In this way, the speed of abnormal changes in the battery 10 can be monitored for early warning.

[0131] It should be noted that the number and location of the preset points and the length of the preset time etc. can be determined according to actual monitoring needs and are not specifically limited in this embodiment.

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

[0133] When the temperature distribution information is within the first temperature threshold range, it is concluded that the safety status of the battery 10 in the acquisition area is 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, it is concluded that the safety status of the battery 10 in the acquisition area is a warning, and an alarm signal is issued.

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

[0136] That is to say, the safety status of the battery 10 is divided into three levels, namely: normal, warning and dangerous. When the temperature distribution information in the acquisition area is within the first temperature threshold range, it indicates that each battery 10 in the acquisition area is in a normal state. When the temperature distribution information in the acquisition area is between the first temperature threshold and the second temperature threshold, it indicates that the temperature of a battery 10 in the acquisition area is abnormal, and an alarm signal is issued at this time so that the management personnel can check the abnormal battery 10. When the temperature distribution information in the acquisition area exceeds the second temperature threshold range, it indicates that the temperature of a battery 10 in the acquisition area is out of control, and an alarm signal is issued at this time so that emergency treatment can be performed on the abnormal battery 10.

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

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

[0139] If the thermal behavior of the battery 10 intensifies, emergency treatment is performed.

[0140] Specifically, when the safety status of the battery 10 in the collection area is a warning, the full management personnel promptly checks the thermal behavior of the battery 10 in the warning position. If the battery 10 does not deteriorate further, that is, the thermal behavior of the battery 10 is within a controllable range, the inspection is completed. If the thermal behavior of the battery 10 intensifies, that is, the thermal behavior of the battery 10 is out of control, at this time, the full management personnel can operate the stacker through the host in the fire control room to perform emergency treatment on the out-of-control battery 10, such as transfer, fire extinguishing, etc.

[0141] Furthermore, in this embodiment, when it is determined that the safety status of the battery 10 in the collection area is dangerous, emergency treatment is performed on the battery 10 in the dangerous position.

[0142] That is to say, the thermal behavior of the battery 10 in the collection area is directly in an out-of-control state. At this time, the host in the fire control room will immediately operate the out-of-control battery 10 of the stacker for emergency treatment until the alarm signal is eliminated.

[0143] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

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

Claims

1. A battery rack, characterized in that: It comprises a battery rack body (100) and a light reflecting device (200); The battery rack body (100) is provided with a plurality of placement positions (101), each of the placement positions (101) being used to place at least one battery (10); The reflective device (200) is arranged on at least one of the placement positions (101), and the reflective device (200) is used to reflect part of the infrared rays radiated by the battery (10) on the placement position (101) to a preset position.

2. The battery rack according to claim 1, characterized in that: The reflective device (200) comprises a reflective component (210) and at least one connecting component (220), wherein the reflective component (210) has a reflective surface (201); The reflective component (210) is connected to the battery rack body (100) via the connecting component (220), and the reflective surface (201) faces the corresponding placement position (101).

3. The battery rack according to claim 2, characterized in that: The reflective assembly (210) comprises a reflective plate (211) and at least one first connecting member (212), and the reflective surface (201) is located on the reflective plate (211); The first connecting member (212) is connected to a side of the reflective plate (211) facing away from the reflective surface (201), and the first connecting member (212) is connected to the connecting assembly (220).

4. The battery rack according to claim 3, characterized in that: The upper edge of the reflective surface (201) has at least one arc surface segment (2011), and the arc surface segment (2011) protrudes toward one side of the placement position (101).

5. The battery rack according to claim 3, characterized in that: The connection assembly (220) comprises a second connection member (221) and a third connection member (222), wherein the second connection member (221) is connected to the first connection member (212); The third connecting member (222) is connected to the battery rack body (100), and the second connecting member (221) is rotatably disposed on the third connecting member (222) to adjust the angle of the reflective surface (201).

6. The battery rack according to claim 5, characterized in that: The connection assembly (220) further comprises a fastener (223); the second connection member (221) has a first connection portion (2211); and the third connection member (222) has a second connection portion (2221); At least one of the first connection portion (2211) and the second connection portion (2221) is a slotted hole, and the fastener (223) passes through the slotted hole to connect the first connection portion (2211) and the second connection portion (2221); The first connection portion (2211) moves relative to the second connection portion (2221) along the extension direction of the slot hole 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.

7. The battery rack according to any one of claims 1 to 6, characterized in that: The battery rack body (100) comprises at least two legs (110) and a plurality of placement racks (120), wherein the two legs (110) are arranged at intervals; Both sides of each placement rack (120) are correspondingly connected to the two legs (110), and the placement position (101) is located on the placement rack (120).

8. The battery rack according to claim 7, characterized in that: At least one limiting member (121) is provided on the placement rack (120), and the limiting member (121) is used to limit the movement of the battery (10) on the placement position (101).

9. The battery rack according to claim 7, characterized in that: The plurality of placement racks (120) are arranged at intervals in the horizontal and vertical directions respectively.

10. A battery temperature monitoring system, characterized in that: It comprises an infrared thermal imaging monitoring device (300) and a battery rack as claimed in any one of claims 1 to 9, wherein the infrared thermal imaging monitoring device (300) is arranged at the preset position and is used to collect part of the infrared rays radiated by the battery (10) on the placement position (101) or collect part of the infrared rays reflected by the reflective device (200) on the placement position (101).

11. A battery thermal runaway monitoring method, characterized in that: The battery temperature monitoring system as claimed in claim 10 is adopted, comprising the following steps: The infrared thermal imaging monitoring device (300) collects part of the infrared rays radiated by the battery (10) on the placement position (101) to obtain first analysis data, and obtains temperature distribution information of the collection area according to the first analysis data; The temperature distribution information is compared with a temperature threshold to evaluate the safety status of the battery (10) within the acquisition area.

12. The battery thermal runaway monitoring method according to claim 10, characterized in that: The acquiring temperature distribution information of the acquisition area according to the first analysis data includes acquiring the area and position of the high temperature area according to the temperature values ​​of multiple preset points in the acquisition area, and acquiring the rate of change of the area of ​​the high temperature area within a preset time.

13. The battery thermal runaway monitoring method according to claim 10, characterized in that: The comparing the temperature distribution information with the temperature threshold to evaluate the safety status of the battery (10) in the acquisition area comprises comparing the temperature distribution information in the acquisition area with a first temperature threshold and a second temperature threshold; When the temperature distribution information is within the first temperature threshold range, it is concluded that the safety state of the battery (10) in the acquisition area is normal; When the temperature distribution information is within the range between the first temperature threshold and the second temperature threshold, it is concluded that the safety state of the battery (10) in the acquisition area is a warning, and an alarm signal is issued; When the temperature distribution information exceeds the second temperature threshold range, it is concluded that the safety state of the battery (10) in the acquisition area is dangerous, and an alarm signal is issued.

14. The battery thermal runaway monitoring method according to claim 13, characterized in that: When it is determined that the safety state of the battery (10) in the acquisition area is a warning, a thermal behavior of the battery (10) in the warning position is checked; If the thermal behavior of the battery (10) does not increase, the inspection is completed; If the thermal behavior of the battery (10) intensifies, emergency treatment is performed.

15. The battery thermal runaway monitoring method according to claim 13, characterized in that: When it is determined that the safety status of the battery (10) in the collection area is dangerous, emergency treatment is performed on the battery (10) in the dangerous position.

Images