Protective plate of battery pack, bottom placement detection method, electronic equipment, battery pack, vehicle and storage medium

Abstract

The invention discloses a protection plate of a battery pack, a bottom placement detection method, electronic equipment, the battery pack, a vehicle and a storage medium, and the protection plate of the battery pack comprises a plurality of protection plates which are stacked in a first direction; and the bottom laying monitoring module is positioned among the plurality of protection plates in the first direction, and is used for carrying out bottom laying monitoring on the battery pack and triggering a bottom laying alarm when the bottom laying of the battery pack occurs. According to the protection plate of the battery pack, early warning can be performed in time, and the protection plate has the advantages of being good in reliability, high in safety, beneficial to light weight and the like.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a protective plate of a battery pack, a method for detecting vehicle bottoming, electronic equipment, a vehicle and a storage medium. Background Art

[0002] The vehicle battery is placed at the bottom of the vehicle. Due to the complex road conditions, the bottom of the vehicle often breaks down. The bottom of the vehicle is also easily invaded by stones, water, etc., and the battery at the bottom of the vehicle is impacted, which poses certain safety hazards. Therefore, better protection of the battery is needed.

[0003] In the related art, the battery at the bottom of the vehicle is protected by a battery pack guard plate. The battery pack guard plate is stamped with a metal plate structure or reinforced with ribs to improve the structural strength. However, due to the need to lighten the vehicle, the thickness of the battery pack guard plate is reduced, which will cause the battery pack body to bear part of the impact force, which is easy to damage the battery, resulting in the use of a thick battery pack guard plate, and the weight of the vehicle is difficult to reduce. In addition, although the battery pack guard plate can play a certain protective role, it cannot obtain the severity of the bottom collision. The people in the car cannot know whether the bottom collision has occurred. The interaction between the vehicle and the people is poor, and there are also safety hazards. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a protective plate for a battery pack, which can provide timely warning, has the advantages of good reliability, high safety, and is conducive to lightweight.

[0005] The invention also provides a method for detecting vehicle grounding.

[0006] The invention also provides an electronic device.

[0007] The invention also provides a battery pack.

[0008] The present invention also provides a vehicle.

[0009] The present invention also provides a non-volatile readable storage medium.

[0010] To achieve the above-mentioned purpose, a protective plate of a battery pack according to an embodiment of the present invention includes: a plurality of protective plates stacked along a first direction; and a bottom monitoring module, wherein the bottom monitoring module is located between the plurality of protective plates in the first direction, and is used to perform bottom monitoring on the battery pack and trigger a bottom alarm when the battery pack hits the bottom.

[0011] According to the protective plate of the battery pack of the embodiment of the present invention, by constructing a bottom monitoring module, it can monitor the impact of the bottom and provide an early warning for the driver. In addition, the bottom monitoring module is located between multiple protective plates in the first direction. The bottom monitoring module can be hidden between multiple protective plates. Compared with being arranged on the top or bottom of the protective plate, the protective plate not only plays a protective role but also provides protection for the bottom monitoring module, which can effectively ensure that the monitoring judgment is not affected by ground sand and water, reduce the probability of false alarms, and meet the use of various harsh working conditions. In addition, by using the bottom monitoring module for early warning, the number of layers and thickness of the protective plate can be reduced to a certain extent, and the lightweight degree of the whole vehicle can be improved. The protective plate of the battery pack uses the protective plate to form structural protection, and the bottom monitoring module performs monitoring and protection at the same time. While playing a certain bottom protection, it provides a bottom alarm in time when the bottom occurs, so that personnel can take measures in time to prevent further damage to the battery, remind users to repair and avoid risks in time, avoid battery fire, and improve the safety of the vehicle.

[0012] Therefore, the protective plate of the battery pack according to the embodiment of the present invention can provide timely warning and has the advantages of good reliability, high safety, and light weight.

[0013] According to some specific embodiments of the present invention, the bottom monitoring module includes: at least one bottom monitoring unit, used to perform bottom monitoring on the battery pack; a signal transmission bus, the signal transmission bus is connected to the at least one bottom monitoring unit, and is used to output a bottom monitoring signal.

[0014] Furthermore, the shelf bottom monitoring module includes a plurality of the shelf bottom monitoring units, and the plurality of the shelf bottom monitoring units are arranged in an array in the second direction and a third direction, wherein the second direction and the third direction are perpendicular to the first direction.

[0015] Furthermore, among the plurality of shelf bottom monitoring units arranged in the array, two adjacent shelf bottom monitoring units in each column are connected via a first signal transmission line, and each shelf bottom monitoring unit in the first row is connected to the signal transmission bus.

[0016] Furthermore, the plurality of shelf bottom monitoring units arranged in the array are arranged at equal intervals in the second direction and the third direction.

[0017] According to some specific embodiments of the present invention, an array composed of a plurality of the bottom shelf monitoring units includes a plurality of sub-arrays arranged along the second direction, and a preset spacing is provided between adjacent sub-arrays. The bottom shelf monitoring units in different sub-arrays are used to perform bottom shelf monitoring on different positions of the battery pack.

[0018] Further, each of the sub-arrays includes at least one row of the bottom shelf monitoring units in the array; or, each of the sub-arrays includes multiple rows of the bottom shelf monitoring units in the array, and two adjacent bottom shelf monitoring units in each row in each of the sub-arrays are connected via a second signal transmission line.

[0019] According to some specific embodiments of the present invention, the battery pack includes a distribution box and multiple batteries; the array composed of multiple bottom shelf monitoring units includes a first sub-array, a second sub-array and a third sub-array arranged along the second direction; the first sub-array is suitable for a position setting corresponding to the distribution box; the second sub-array is suitable for a first position setting corresponding to the battery pack where the batteries are arranged; the third sub-array is suitable for a second position setting corresponding to the battery pack where the batteries are arranged.

[0020] According to some specific embodiments of the present invention, the bottoming detection unit includes a pressure sensor, which is used to output a bottoming signal when the sensed pressure signal is greater than a pressure threshold.

[0021] According to some specific embodiments of the present invention, the multiple protective plates stacked along the first direction include a top plate, a bottom plate and a protective interlayer stacked along the first direction, and the protective interlayer is located between the top plate and the bottom plate; the bottom shelf monitoring module is located between the top plate and the protective interlayer.

[0022] According to some specific embodiments of the present invention, the protective interlayer includes: a buffer material layer, which is a flexible structure; an impact-resistant layer, which is a rigid structure, the buffer material layer and the impact-resistant layer are stacked along the first direction, and the impact-resistant layer is close to the bottom monitoring module.

[0023] According to some specific embodiments of the present invention, the buffer material layer is constructed into a honeycomb hollow structure.

[0024] According to some specific embodiments of the present invention, the multiple protective plates stacked along the first direction also include: a first adhesive layer, the first adhesive layer is located between the impact-resistant layer and the buffer material layer to fix the impact-resistant layer and the buffer material layer; a second adhesive layer, the second adhesive layer is located between the buffer material layer and the bottom plate to fix the buffer material layer and the bottom plate.

[0025] According to an embodiment of the second aspect of the present invention, a method for detecting vehicle grounding is proposed, wherein the vehicle includes the protective plate of the battery pack according to the above embodiment of the present invention, and the method includes: obtaining grounding monitoring information of the protective plate of the battery pack; and issuing a grounding alarm when it is determined that the vehicle has grounded according to the grounding monitoring information.

[0026] The method for detecting vehicle grounding according to the embodiment of the present invention can provide a timely warning and has the advantages of good reliability, high safety, and light weight.

[0027] According to some specific embodiments of the present invention, the bottom shelf monitoring information includes a voltage-variable voltage signal; when the voltage-variable voltage signal exceeds a voltage threshold, a bottom shelf alarm is issued.

[0028] Furthermore, the bottom shelf monitoring information also includes disconnection information of a bottom shelf monitoring unit connection line in the protective plate of the battery pack;

[0029] When the transformer voltage signal does not reach the voltage threshold and it is determined according to the disconnection information that the disconnection quantity of the bottom shelf monitoring unit reaches a first quantity threshold, a bottom shelf alarm is issued.

[0030] According to some specific embodiments of the present invention, the bottom shelf monitoring information further includes disconnection information of a bottom shelf monitoring unit connection line in a protective plate of the battery pack;

[0031] When the transformer voltage signal does not reach the voltage threshold and it is determined according to the disconnection information that the number of disconnections of the bottom shelf monitoring unit reaches a second number threshold for a continuous preset time, a bottom shelf alarm is issued, and the second number threshold is less than the first number threshold.

[0032] According to an embodiment of the third aspect of the present invention, an electronic device is proposed, comprising: at least one processor; a memory communicatively connected to the at least one processor; a computer program executable by the at least one processor is stored in the memory, and when the at least one processor executes the computer program, the method for detecting vehicle underrunning of the above-mentioned embodiment of the present invention is implemented.

[0033] The electronic device according to the embodiment of the present invention executes the method for monitoring vehicle grounding according to the above embodiment of the present invention through a computer program, which has the advantages of strong early warning and high safety.

[0034] According to a fourth aspect of the present invention, a battery pack is proposed, comprising a plurality of batteries and a distribution box, wherein the plurality of batteries and the distribution box correspond to the bottom shelf monitoring unit distribution of different sub-arrays of the protective plate of the battery pack described in the above embodiment of the present invention.

[0035] The battery pack according to the above embodiment of the present invention can provide timely warnings through the distribution of the bottom monitoring units of different sub-arrays corresponding to the protective plate of the battery pack according to the above embodiment of the present invention, and has the advantages of good reliability and high safety.

[0036] Furthermore, multiple batteries are arranged in arrays; the multiple batteries arranged in the arrays include a first battery sub-array and a second battery sub-array; the distribution box, the first battery sub-array and the second battery sub-array are arranged along a second direction; wherein the first battery sub-array corresponds to a first position of the battery pack, and the second battery sub-array corresponds to a second position of the battery pack.

[0037] According to an embodiment of the fifth aspect of the present invention, a vehicle is proposed, comprising: a battery and a protective plate of the battery pack according to the above embodiment of the present invention, the protective plate of the battery pack being located on a side of the battery close to the ground; a controller, the controller being connected to a bottom-rest monitoring module of the protective plate of the battery pack, for executing the method for detecting the bottom of a vehicle according to the above embodiment of the present invention.

[0038] The vehicle according to the embodiment of the present invention can provide a timely warning by utilizing the method for monitoring vehicle grounding according to the embodiment of the present invention, and has the advantages of good reliability, high safety, and light weight.

[0039] According to a sixth aspect of the present invention, a non-volatile readable storage medium is provided, on which a computer program is stored. When the computer program is executed, the method for detecting the bottom of a vehicle according to the above embodiment of the present invention is implemented.

[0040] The non-volatile readable storage medium according to the embodiment of the present invention can provide timely warning and has the advantages of good reliability, high safety, and light weight.

[0041] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0043] Figure 1 is an exploded view of a protective plate of a battery pack according to an embodiment of the present invention;

[0044] Figure 2 is a cross-sectional view of a protective plate of a battery pack according to an embodiment of the present invention;

[0045] Figure 3 is a structural schematic diagram of a bottom shelf monitoring module of a protective plate of a battery pack according to an embodiment of the present invention;

[0046] Figure 4 is a flow chart of a method for detecting vehicle bottoming according to an embodiment of the present invention.

[0047] Reference numerals:

[0048] The battery pack guard plate 1, the protection plate 100, the bottom monitoring module 200, the bottom monitoring unit 210, the signal transmission bus 220,

[0049] The first signal transmission line 221, the second signal transmission line 222,

[0050] The first sub-array 101, the second sub-array 102, the third sub-array 103,

[0051] Top plate 110, bottom plate 120, protective interlayer 130, buffer material layer 131, impact resistant layer 132,

[0052] The first adhesive layer 133 and the second adhesive layer 134 . DETAILED DESCRIPTION

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0055] In the description of the present invention, "plurality" means two or more.

[0056] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0057] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0058] The following describes a protective plate 1 of a battery pack according to an embodiment of the present invention with reference to the accompanying drawings.

[0059] like Figure 1-Figure 4As shown, the protective plate 1 of the battery pack according to the embodiment of the present invention comprises a plurality of protective plates 100 stacked in a first direction and a bottom monitoring module 200. The bottom monitoring module 200 is located between the plurality of protective plates 100 in the first direction, and is used to monitor the bottom of the battery pack and trigger a bottom alarm when the battery pack bottoms out.

[0060] For example, the battery pack is arranged at the bottom of the vehicle, and the protective plate 1 of the battery pack is specifically the bottom protective plate of the battery pack. The first direction is the vertical direction, and multiple protective plates 100 stacked along the first direction can be formed into an integrated structure by hot pressing. The bottom monitoring module 200 can be a piezoelectric ceramic module, etc., which can issue an early warning by monitoring the pressure on the protective plate 1 of the battery pack. The top and bottom protective plates 100 can be epoxy resins, which cover the middle protective plate 100 and the bottom monitoring module 200 inside. The bottom monitoring module 200 is located in the upper layer of the multi-layer protective plates 100. The bottom monitoring module 200 will not be impacted until the protective plates 100 of the lower layer provide protection, so that the bottom alarm is triggered more accurately.

[0061] According to the protective plate 1 of the battery pack of the embodiment of the present invention, by constructing the bottom monitoring module 200, it can monitor the impact of the bottom and provide an early warning for the driver. And the bottom monitoring module 200 is located between the multiple protective plates 100 in the first direction, and the bottom monitoring module 200 can be hidden between the multiple protective plates 100. Compared with being arranged at the top or bottom of the protective plate 100, the protective plate 100 not only plays a protective role, but also provides protection for the bottom monitoring module 200, which can effectively ensure that the monitoring judgment is not affected by the sand and water on the ground, reduce the probability of false alarms, and meet the use of various harsh working conditions. In addition, through the early warning of the bottom monitoring module 200, the number of layers and thickness of the protective plate 100 can be reduced to a certain extent, and the lightweight degree of the whole vehicle can be improved. The protective plate 1 of the battery pack uses the protective plate 100 to form structural protection, and the bottom monitoring module 200 performs monitoring and protection. While playing a certain bottom protection, it provides a bottom alarm in time when the bottom occurs, so that personnel can take measures in time to prevent further damage to the battery pack, remind users to repair and avoid risks in time, avoid battery pack fire, and improve the safety of the vehicle.

[0062] Therefore, the protective plate 1 of the battery pack according to the embodiment of the present invention can provide timely warning and has the advantages of good reliability, high safety, and light weight.

[0063] In some specific embodiments of the present invention, Figure 3 As shown, the bottom monitoring module 200 includes: at least one bottom monitoring unit 210 and a signal transmission bus 220. The bottom monitoring unit 210 is used to perform bottom monitoring on the battery pack. The signal transmission bus 220 is connected to the at least one bottom monitoring unit 210 and is used to output a bottom monitoring signal.

[0064] For example, the signal transmission bus 220 is located at the front side of the bottom monitoring unit 210 and is connected to the battery management system. When the vehicle guard plate is impacted by the bottom, the bottom monitoring unit 210 detects the pressure and generates an electrical signal, which is transmitted to the battery management system and then transmitted to the vehicle ECU (electronic control unit) to issue a bottom alarm.

[0065] Furthermore, if Figure 3 As shown, the shelf bottom monitoring module 200 includes a plurality of shelf bottom monitoring units 210, and the plurality of shelf bottom monitoring units 210 are arranged in an array in a second direction and a third direction, wherein the second direction and the third direction are perpendicular to the first direction.

[0066] For example, the second direction is the horizontal longitudinal direction (front-to-back direction), and the third direction is the horizontal transverse direction (left-to-right direction). The projection of the battery pack in the top view forms a rectangle, and multiple bottom monitoring units 210 are distributed at the bottom of the vehicle and cover various areas of the battery pack. By providing multiple bottom monitoring modules 200 arranged in an array in the second direction and the third direction, multiple bottom monitoring modules 200 can cover most areas of the battery pack, ensuring that most areas of the battery pack are fully monitored.

[0067] Further, as shown in the figure, among the multiple bottom monitoring units 210 arranged in an array, two adjacent bottom monitoring units 210 in each column are connected via a first signal transmission line 221 , and each bottom monitoring unit 210 in the first row is connected to a signal transmission bus 220 .

[0068] Specifically, the bottom monitoring units 210 in each column are the bottom monitoring units 210 arranged in the second direction. The bottom monitoring units 210 in each row are the bottom monitoring units 210 arranged in the third direction. Two adjacent bottom monitoring units 210 in each column can transmit signals instantly through the first signal transmission line 221. When a bottom monitoring unit 210 in a column detects a bottom signal, it is transmitted to the bottom monitoring module 200 in the first row of the column through the first signal transmission line 221. Finally, the bottom monitoring unit 210 in the first row transmits it to the battery management system through the signal transmission bus 220. The battery management system communicates with the vehicle ECU, and the vehicle ECU issues a bottom alarm.

[0069] Furthermore, if Figure 3 As shown, the plurality of bottom shelf monitoring units 210 arranged in an array are arranged at equal intervals in the second direction and the third direction.

[0070] It should be noted that multiple bottom monitoring units 210 are arranged at equal intervals in the second direction, and multiple bottom monitoring units 210 are arranged at equal intervals in the third direction. The spacing distances between multiple bottom monitoring units 210 in the second direction and the spacing distances in the third direction can be different, as long as the battery pack of the vehicle is evenly covered. By arranging the bottom monitoring units 210 at equal intervals in the second direction and the third direction, they can be evenly distributed in the area of ​​the battery pack of the vehicle, reducing the monitoring blind area.

[0071] In some specific embodiments of the present invention, Figure 3 As shown, the array composed of multiple bottom monitoring units 210 includes multiple sub-arrays arranged along the second direction, with a preset spacing between adjacent sub-arrays, and the bottom monitoring units 210 in different sub-arrays are used to perform bottom monitoring on different positions of the battery pack.

[0072] For example, the second direction is the length direction of the guard plate of the battery pack. A plurality of battery cavities are constructed along the second direction at the bottom of the vehicle. A battery is installed in each battery cavity. The plurality of batteries are arranged at intervals to form a plurality of areas of the battery pack. The bottom monitoring units 210 in the same row correspond to the same sub-array. The bottom monitoring units 210 arranged along the second direction can correspond to different battery positions and monitor the bottom status of different battery positions respectively. When a battery position at a certain position is impacted by the bottom, the bottom monitoring module 200 can accurately monitor the specific collision position, issue an early warning, and facilitate the subsequent repair and replacement of the battery at the bottom position.

[0073] Furthermore, in some embodiments, Figure 3 As shown, each sub-array includes at least one row of shelf monitoring units 210 in the array.

[0074] The bottom monitoring units 210 in the same row all transmit monitoring information to the battery management system through the signal transmission bus 220, and the adjacent bottom monitoring units 210 in the same row can also communicate with each other through the signal transmission bus 220. When the signal transmission bus 220 between the bottom monitoring units 210 in the same row is disconnected, the bottom monitoring unit 210 will transmit the disconnection signal to the battery management system, and the battery management system can determine the disconnection location to ensure that the disconnection location can be fully identified.

[0075] In other embodiments, Figure 3 As shown, each sub-array includes a plurality of rows of shelf monitoring units 210 in the array, and two adjacent shelf monitoring units 210 in each row in each sub-array are connected via a second signal transmission line 222 .

[0076] In this way, multiple bottom monitoring units 210 are arranged along multiple rows and columns. When one of the bottom monitoring units 210 in a row is subjected to bottom pressure, the first signal transmission line 221 of the column in which it is located is sequentially transmitted to the bottom monitoring unit 210 in the first row and transmitted to the battery management system through the signal transmission bus 220. The battery management system can then determine the location where the bottoming occurred. In addition, the two adjacent bottom monitoring units 210 in each row are interconnected through the second signal transmission line 222. When the second signal transmission line 222 between two adjacent bottom monitoring units 210 in a row is disconnected due to the impact of the bottom, the bottom monitoring module 200 at the disconnected location transmits the disconnection information sequentially to the bottom monitoring unit 210 in the first row and transmits it to the battery management system through the signal transmission bus 220. The battery management system determines the location where the bottoming occurred through the disconnection information, ensuring that the disconnection location can be fully identified.

[0077] In some specific embodiments of the present invention, Figure 3 As shown, the battery pack includes a distribution box and a plurality of batteries. The array composed of a plurality of shelf bottom monitoring units 210 includes a first sub-array 101, a second sub-array 102, and a third sub-array 103 arranged along the second direction. The first sub-array 101 is suitable for the position setting corresponding to the distribution box. The second sub-array 102 is suitable for the first position setting corresponding to the battery pack where the batteries are arranged. The third sub-array is suitable for the second position setting corresponding to the battery pack where the batteries are arranged.

[0078] For example, Figure 3 As shown, the shelf monitoring module 200 has 20 shelf monitoring units 210 arranged in an array of five rows and four columns, the first row of shelf monitoring units 210 forms a first sub-array 101, the middle two rows of shelf monitoring units 210 form a second sub-array 102, and the last two rows form a third sub-array 103. The shelf monitoring module 200 can be arranged in different ways according to the size requirements of the battery pack.

[0079] The bottom monitoring unit 210 of the first subarray 101 covers the area of ​​the distribution box and provides a bottom warning for the distribution box. The second subarray 102 and the third subarray 103 can correspond to the positions of different batteries in the battery pack and provide a bottom warning for the batteries in different positions, so as to determine the specific location where the bottom occurs. The battery management system receives the bottom information from different areas. When the bottom monitoring unit 210 in a certain area detects the bottom, the battery management system can locate the area in time, so as to perform maintenance on the specific area of ​​the battery pack later.

[0080] In some specific embodiments of the present invention, the bottom shelf detection unit includes a pressure sensor, which is used to output a bottom shelf signal when the sensed pressure signal is greater than a pressure threshold.

[0081] For example, the pressure sensor is specifically a piezoelectric ceramic, which generates a voltage signal when subjected to pressure. It is determined by calculating the voltage formula of the piezoelectric ceramic V = F × d33 × t / A, where F is the deformation coefficient, calculated by the deformation amount; A is the cross-sectional area of ​​the piezoelectric ceramic; t is the thickness; and g33 is the piezoelectric constant.

[0082] Each bottom monitoring module 200 is equipped with multiple piezoelectric ceramic monitoring, forming multiple monitoring points on each bottom monitoring module 200. When the protective plate 1 of the battery pack is subjected to a large bottom impact, the bottom monitoring module 200 is deformed upward by force, and the piezoelectric ceramic can convert its own deformation into a voltage signal, which is transmitted to the battery management system through the signal transmission bus 220. When the voltage signal reaches the warning voltage, a bottom alarm is issued.

[0083] In some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, a plurality of protective plates 100 stacked in a first direction include a top plate 110, a bottom plate 120 and a protective interlayer 130 stacked in a first direction, wherein the protective interlayer 130 is located between the top plate 110 and the bottom plate 120. The bottom shelf monitoring module 200 is located between the top plate 110 and the protective interlayer 130.

[0084] For example, the top plate 110 and the bottom plate 120 are both glass fiber composite materials, which are formed by mixing glass fiber and resin materials and hot pressing. The protective interlayer 130 is located between the top plate 110 and the bottom plate 120 and is encapsulated as a whole. In addition, the bottom monitoring module 200 can be bonded to the top plate 110 as a whole during hot pressing. The bottom monitoring module 200 is located between the top plate 110 and the protective interlayer 130, and the protective interlayer 130 provides structural protection at the bottom of the bottom monitoring module 200. When a smaller bottom impact occurs, the bottom plate 120 first plays a certain protective role, and then the protective interlayer 130 will block the bottom impact. The monitoring force of the bottom monitoring module 200 is small and will not trigger a bottom alarm. When a serious bottom impact occurs, the bottom plate 120 and the protective interlayer 130 play an impact-resistant role in turn. After the bottom impact breaks through the protective interlayer 130, the bottom monitoring module 200 senses the impact force and generates a transformer voltage and transmits it to the battery monitoring module. When the transformer voltage reaches the warning voltage, the bottom monitoring unit 210 transmits it to the battery management system through the signal transmission bus 220. The battery management system is interconnected and communicated with the vehicle ECU, and the vehicle ECU issues a bottom alarm.

[0085] In some specific embodiments of the present invention, Figure 1 and Figure 2As shown, the protective interlayer 130 includes: a buffer material layer 131 and an impact-resistant layer 132. The buffer material layer 131 is a flexible structure. The impact-resistant layer 132 is a rigid structure. The buffer material layer 131 and the impact-resistant layer 132 are stacked along a first direction, and the impact-resistant layer 132 is close to the bottom monitoring module 200.

[0086] For example, the impact-resistant layer 132 can be an impact-resistant buffer material such as MPP (microporous polypropylene foam material) and hard PO (foam). The thickness of the buffer material layer 131 is greater than that of the impact-resistant layer 132, and has a longer buffer stroke. When bottoming occurs, the buffer material layer 131 first performs the first protection to reduce the initial velocity of the bottoming impact. The impact strength has been reduced, making it difficult for smaller bottoming impacts to break through the impact-resistant layer 132, and larger bottoming impacts will also be protected by the second protection of the impact-resistant layer 132. Since the impact-resistant layer 132 is close to the bottoming monitoring module 200, when the impact-resistant layer 132 is also unable to resist the bottoming impact, the bottoming monitoring module 200 is subjected to pressure and generates a voltage transformer, triggering a bottoming alarm, and promptly reminding the occupants of the vehicle of a serious bottoming condition to prevent further damage to the battery at the bottom of the vehicle.

[0087] In some specific embodiments of the present invention, Figure 1 As shown, the buffer material layer 131 is constructed into a honeycomb hollow structure. The honeycomb hollow structure increases the deformation space of the buffer material layer 131, making it easier for the buffer material layer 131 to deform, preventing the probability of rigid impact. When a small bottom impact occurs, the bottom impact is buffered by the honeycomb hollow structure, and the force transmitted to the vehicle chassis is small, thereby improving the riding comfort of the personnel in the cab. In addition, when a more serious bottom impact occurs, the bottom impact force can also be greatly reduced, reducing the initial velocity of the bottom impact when it touches the anti-impact layer 132, which helps the anti-impact layer 132 resist the impact.

[0088] In some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the plurality of protection plates 100 stacked along the first direction further include: a first adhesive layer 133 and a second adhesive layer 134 .

[0089] The first adhesive layer 133 is located between the impact-resistant layer 132 and the buffer material layer 131 to fix the impact-resistant layer 132 and the buffer material layer 131. The second adhesive layer 134 is located between the buffer material layer 131 and the bottom plate 120 to fix the buffer material layer 131 and the bottom plate 120. In addition, the impact-resistant layer 132 and the bottom shelf monitoring module 200 can also be bonded and fixed. By constructing the first adhesive layer 133 and the second adhesive layer 134, no displacement occurs between the impact-resistant layer 132 and the buffer material layer 131, no displacement occurs between the buffer material layer 131 and the bottom plate 120, and the top plate 110, the bottom plate 120 and the protective interlayer 130 along the first direction are all kept fixed, and the reliability and durability are better.

[0090] In addition, in some other specific embodiments of the present invention, the buffer material layer 131 may also be located above the impact-resistant layer 132, and the bottom shelf monitoring module 200 is disposed close to the buffer material layer 131. The bottom shelf monitoring module 200 may also be fixed without gluing, and the top of the buffer material layer 131 is configured with a groove for accommodating the bottom shelf monitoring module 200, and the bottom shelf monitoring module 200 is embedded in the buffer material layer 131.

[0091] The following describes a method for detecting vehicle grounding according to an embodiment of the present invention.

[0092] The vehicle includes the protective plate 1 of the battery pack according to the above embodiment of the present invention. Figure 4 As shown, the method for detecting vehicle bottoming according to an embodiment of the present invention includes:

[0093] Obtain the bottom monitoring information of the battery pack guard plate;

[0094] When it is determined that the vehicle has run aground based on the grounding monitoring information, a grounding alarm is issued.

[0095] Specifically, the bottom monitoring module obtains the bottom monitoring information of the battery pack's protective plate and transmits it to the battery management system through the signal transmission bus. The battery management system communicates with the vehicle ECU. The battery management system determines whether the bottom monitoring information meets the conditions for triggering the bottom alarm. When the bottom monitoring information meets the conditions for triggering the bottom alarm, the battery management system sends a bottom alarm request to the vehicle ECU, and the vehicle ECU performs a bottom alarm.

[0096] According to the method for detecting vehicle grounding according to an embodiment of the present invention, the grounding situation is monitored by using the protective plate of the battery pack according to the above embodiment of the present invention, and a grounding warning is provided to the occupants of the vehicle. After obtaining the grounding information, the occupants of the vehicle can know the location of the grounding, the severity of the grounding, etc., which helps the occupants of the vehicle to take correct measures to ensure the safety of the vehicle.

[0097] In some specific embodiments of the present invention, Figure 4As shown, the shelf bottom monitoring information includes a voltage signal. When the voltage signal exceeds a voltage threshold, a shelf bottom alarm is issued. For example, if the voltage threshold is 1.5V, a shelf bottom alarm is issued when the voltage signal is greater than 1.5V.

[0098] The voltage signal is measured by the piezoelectric ceramics of the bottom monitoring module. The piezoelectric ceramics are distributed in various areas of the battery. The voltage signal may include voltage signals distributed in different areas of the entire battery. The bottom monitoring module generates a voltage when it is impacted by the bottom. The bottom monitoring module transmits the generated voltage to the battery management system. The battery management system monitors the value of the voltage. When the voltage exceeds the voltage threshold, it sends an alarm request to the vehicle ECU to issue a bottom alarm. In this way, the precise bottom position can be obtained in time according to the voltage monitored at different positions. And the different voltages monitored can also be used to judge the severity of the bottom to ensure vehicle safety.

[0099] Furthermore, if Figure 4 As shown, the bottom shelf monitoring information also includes disconnection information of the bottom shelf monitoring unit connection in the protective plate 1 of the battery pack;

[0100] When the voltage transformer voltage signal does not exceed the voltage threshold and the number of disconnections of the bottom monitoring unit is determined to reach a first threshold according to the disconnection information, a bottom alarm is issued. For example, if the first threshold is 3, a bottom alarm is issued when the number of disconnections reaches 3.

[0101] Considering that the bottom monitoring unit has a limited area and cannot fully cover the battery, the bottom monitoring unit is arranged in an array in the battery area, and the adjacent bottom monitoring units are connected through the bottom monitoring unit connection, so as to achieve the purpose of full-area battery monitoring. The connection between adjacent bottom monitoring units will be disconnected when impacted, and the bottom monitoring unit monitors the disconnection information of the area where it is located. When the connection between two adjacent bottom monitoring units is disconnected, the battery management system recognizes the disconnection state and sends a bottom alarm request to the vehicle ECU, and the vehicle ECU issues a bottom alarm.

[0102] By monitoring the number of broken wires of the bottom monitoring units and connecting the wires between adjacent bottom monitoring units, an early warning can be provided when a bottom impact occurs at a location where no bottom monitoring unit is set. In this way, the number of bottom monitoring units can be appropriately reduced, and a monitoring network can be formed by connecting the bottom monitoring units to ensure a more comprehensive monitoring area. The method for detecting vehicle bottoming in an embodiment of the present invention not only monitors the piezoelectric voltage, but also performs broken wire monitoring. The method and detection area for detecting vehicle bottoming are more comprehensive, thereby improving the accuracy of detecting vehicle bottoming.

[0103] It is understandable that the priority of monitoring the transformer voltage signal is higher than that of monitoring the disconnection information of the grounding monitoring unit, that is, as long as the transformer voltage is too high, it can be determined that the grounding has occurred. The monitoring of the disconnection information is determined only when the transformer voltage signal does not exceed the voltage threshold, and the grounding alarm is not issued until the disconnection reaches the first number threshold, thereby reducing the occurrence of false alarms due to line problems and ensuring the accuracy of detecting the vehicle grounding.

[0104] In some specific embodiments of the present invention, Figure 4 As shown, the bottom shelf monitoring information also includes disconnection information of the bottom shelf monitoring unit connection in the protective plate of the battery pack.

[0105] When the voltage transformer voltage signal does not exceed the voltage threshold and the number of disconnections of the bottom monitoring unit is determined to reach the second number threshold for a continuous preset time according to the disconnection information, a bottom alarm is issued, and the second number threshold is less than the first number threshold. For example, the preset time is 180 seconds, the second number threshold is 2, and the number of disconnections within 180 consecutive seconds reaches 2, a bottom alarm is issued.

[0106] When monitoring the number of broken wires, if the number of broken wires reaches the second threshold within a preset continuous time, it means that multiple broken wires have occurred continuously in a short period of time, rather than a simple line problem. It can be determined that a more serious bottoming impact has occurred, and a bottoming alarm is issued. Since the second threshold is smaller than the first threshold, when the number of broken wires does not reach the first threshold but reaches the second threshold, it means that the broken wires are within a small range. Although the number of broken wires has not reached the first threshold, there are certain safety hazards. A bottoming alarm needs to be issued in time to remind people in the vehicle of safety hazards to avoid further damage to the battery. When the number of broken wires does not reach the second threshold, it can be determined that the vehicle has not bottomed out, and the bottoming monitoring information of the battery pack guard plate is continuously monitored.

[0107] The following describes an electronic device according to an embodiment of the present invention.

[0108] An electronic device according to an embodiment of the present invention includes: at least one processor and a memory communicatively connected to the at least one processor.

[0109] The memory stores a computer program that can be executed by at least one processor. When the at least one processor executes the computer program, the method for detecting vehicle bottoming according to the above embodiment of the present invention is implemented.

[0110] The electronic device according to the embodiment of the present invention can implement the method for detecting vehicle grounding according to the above embodiment of the present invention by executing a computer program, and can give a timely warning, and has the advantages of good reliability, high safety, and light weight.

[0111] A battery pack according to an embodiment of the present invention is described below.

[0112] The battery pack according to the embodiment of the present invention comprises: a plurality of batteries and a distribution box, wherein the plurality of batteries and the distribution box correspond to the bottom shelf monitoring units of different sub-arrays of the protective plate of the battery pack of the above embodiment of the present invention.

[0113] The battery pack according to the embodiment of the present invention can provide timely warnings through the distribution of the bottom monitoring units of different sub-arrays of the protective plate of the battery pack corresponding to the above-mentioned embodiment of the present invention, and has the advantages of good reliability and high safety.

[0114] According to some specific embodiments of the present invention, a plurality of batteries are arranged in arrays; the plurality of batteries arranged in the arrays include a first battery sub-array and a second battery sub-array. The distribution box, the first battery sub-array and the second battery sub-array are arranged along a second direction. The first battery sub-array corresponds to a first position of the battery pack, and the second battery sub-array corresponds to a second position of the battery pack.

[0115] A vehicle according to an embodiment of the present invention will be described below.

[0116] The vehicle according to the embodiment of the present invention comprises a battery, a protective plate 1 of a battery pack according to the above embodiment of the present invention, and a controller, wherein the protective plate 1 of the battery pack is located on the side of the battery close to the ground. The controller is connected to the bottoming monitoring module 200 of the protective plate 1 of the battery pack, and is used to execute the method for detecting the bottoming of the vehicle according to the above embodiment of the present invention.

[0117] The vehicle according to the embodiment of the present invention can provide a timely warning by executing the method for detecting vehicle grounding according to the above embodiment of the present invention, and has the advantages of good reliability, high safety, and light weight.

[0118] The following describes a non-volatile readable storage medium according to an embodiment of the present invention, on which a computer program is stored. When the computer program is executed, the method for detecting vehicle underrun according to the above embodiment of the present invention is implemented.

[0119] The non-volatile readable storage medium according to the embodiment of the present invention is executed by a computer program to implement the method for detecting vehicle grounding according to the above embodiment of the present invention, which can provide timely warnings and has the advantages of good reliability, high safety, and being conducive to lightweight.

[0120] The protective plate 1 of the battery pack, the vehicle, and other structures and operations of the electronic device according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0121] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0122] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A protective plate for a battery pack, characterized in that: include: A plurality of protective plates stacked along a first direction; A bottom monitoring module is located between the plurality of protection plates in the first direction, and is used for monitoring the bottom of the battery pack and triggering a bottom alarm when the battery pack bottoms out.

2. The protective plate of the battery pack according to claim 1, characterized in that: The bottom monitoring module comprises: At least one bottom monitoring unit, used to perform bottom monitoring on the battery pack; A signal transmission bus is connected to the at least one bottom shelf monitoring unit and is used to output a bottom shelf monitoring signal.

3. The protective plate of the battery pack according to claim 2, characterized in that: The shelf bottom monitoring module includes a plurality of shelf bottom monitoring units, and the plurality of shelf bottom monitoring units are arranged in an array in the second direction and a third direction, wherein the second direction and the third direction are perpendicular to the first direction.

4. The protective plate of the battery pack according to claim 3, characterized in that: Among the plurality of shelf bottom monitoring units arranged in the array, two adjacent shelf bottom monitoring units in each column are connected via a first signal transmission line, and each shelf bottom monitoring unit in the first row is connected to the signal transmission bus.

5. The protective plate of the battery pack according to claim 4, characterized in that: The plurality of bottom shelf monitoring units arranged in the array are arranged at equal intervals in the second direction and the third direction.

6. The protective plate of the battery pack according to claim 4, characterized in that: The array composed of multiple bottom monitoring units includes multiple sub-arrays arranged along the second direction, with a preset spacing between adjacent sub-arrays, and the bottom monitoring units in different sub-arrays are used to perform bottom monitoring on different positions of the battery pack.

7. The protective plate of the battery pack according to claim 6, characterized in that: Each of the sub-arrays includes at least one row of the bottom shelf monitoring units in the array; Alternatively, each of the sub-arrays includes a plurality of rows of the shelf bottom monitoring units in the array, and two adjacent shelf bottom monitoring units in each row in each of the sub-arrays are connected via a second signal transmission line.

8. The protective plate of the battery pack according to claim 6, characterized in that: The battery pack includes a distribution box and a plurality of batteries; The array formed by the plurality of shelf bottom monitoring units comprises a first sub-array, a second sub-array and a third sub-array arranged along the second direction; The first sub-array is suitable for being arranged at a position corresponding to the distribution box; The second sub-array is adapted to be arranged corresponding to a first position in the battery pack where the batteries are arranged; The third sub-array is suitable for being arranged corresponding to the second position where the batteries are arranged in the battery pack.

9. The protective plate of the battery pack according to any one of claims 2 to 8, characterized in that: The bottoming detection unit comprises a pressure sensor, which is used to output a bottoming signal when a sensed pressure signal is greater than a pressure threshold.

10. The protective plate of the battery pack according to claim 1, characterized in that: The plurality of protective plates stacked along the first direction include a top plate, a bottom plate and a protective interlayer stacked along the first direction, wherein the protective interlayer is located between the top plate and the bottom plate; The bottom shelf monitoring module is located between the top plate and the protective interlayer.

11. The protective plate of the battery pack according to claim 9, characterized in that: The protective interlayer comprises: A buffer material layer, wherein the buffer material layer is a flexible structure; The impact-resistant layer is a rigid structure. The buffer material layer and the impact-resistant layer are stacked along the first direction. The impact-resistant layer is close to the bottom monitoring module.

12. The protective plate of the battery pack according to claim 10, characterized in that: The buffer material layer is constructed into a honeycomb hollow structure.

13. The protective plate of the battery pack according to claim 10, characterized in that: The plurality of protective plates stacked along the first direction further include: a first adhesive layer, the first adhesive layer being located between the impact-resistant layer and the buffer material layer to fix the impact-resistant layer and the buffer material layer; A second adhesive layer is located between the buffer material layer and the bottom plate to fix the buffer material layer and the bottom plate.

14. A method for detecting vehicle bottoming, characterized in that: The vehicle comprises a protective plate of a battery pack according to any one of claims 1 to 13, and the method comprises: Obtaining bottom monitoring information of the protective plate of the battery pack; When it is determined that the vehicle has run aground according to the grounding monitoring information, a grounding alarm is issued.

15. The method according to claim 14, characterized in that The bottom monitoring information includes a voltage signal; When the voltage signal of the transformer exceeds the voltage threshold, a bottoming alarm is issued.

16. The method according to claim 15, characterized in that The bottom shelf monitoring information also includes disconnection information of the bottom shelf monitoring unit connection in the protective plate of the battery pack; When the transformer voltage signal does not reach the voltage threshold and it is determined according to the disconnection information that the disconnection quantity of the bottom shelf monitoring unit reaches a first quantity threshold, a bottom shelf alarm is issued.

17. The method according to claim 15, characterized in that The bottom shelf monitoring information also includes disconnection information of the bottom shelf monitoring unit connection in the protective plate of the battery pack; When the transformer voltage signal does not reach the voltage threshold and it is determined according to the disconnection information that the number of disconnections of the bottom shelf monitoring unit reaches a second number threshold for a continuous preset time, a bottom shelf alarm is issued, and the second number threshold is less than the first number threshold.

18. An electronic device, characterized in that: include: at least one processor; a memory communicatively coupled to the at least one processor; The memory stores a computer program that can be executed by the at least one processor, and when the at least one processor executes the computer program, the method for detecting the bottom of a vehicle as described in any one of claims 14 to 17 is implemented.

19. A battery pack, characterized in that: include: A plurality of batteries and a distribution box, wherein the plurality of batteries and the distribution box correspond to the bottom shelf monitoring unit distribution of different sub-arrays of the protective plate of the battery pack described in any one of claims 1-18.

20. The battery pack according to claim 19, characterized in that: A plurality of said battery arrays are arranged; The plurality of batteries arranged in an array include a first battery sub-array and a second battery sub-array; The distribution box, the first battery sub-array and the second battery sub-array are arranged along a second direction; The first battery sub-array corresponds to a first position of the battery pack, and the second battery sub-array corresponds to a second position of the battery pack.

21. A vehicle, characterized in that: include: A battery pack and a protective plate of the battery pack according to any one of claims 1 to 13, wherein the protective plate of the battery pack is located on a side of the battery close to the ground; A controller connected to the bottom-rest monitoring module of the protective plate of the battery pack, and used to execute the method for detecting the bottom of the vehicle as described in any one of claims 14-17.

22. A non-volatile readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the method for detecting vehicle bottoming as described in any one of claims 14 to 17 is implemented.

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