Bottom detection device and method, control device, storage medium and program product

Abstract

The invention provides a bottom detection device and method, a control device, a storage medium and a program product. The bottom supporting detection device comprises a light source emitting device which is arranged at one end of a gap between a lower shell of the battery pack and a bottom protection plate and is used for providing a light beam; the light detection device is arranged at the other end, opposite to the light source emitting device, in the interval and used for receiving the light beams and determining receiving matrix information corresponding to the light beams according to the light beams; the control device is used for obtaining the receiving matrix information from the light detection device, obtaining the bottom supporting height when the bottom protection plate is subjected to the bottom supporting event according to the receiving matrix information, determining the bottom supporting level according to the bottom supporting height and sending out alarm information corresponding to the bottom supporting level according to the bottom supporting level; and the alarm device is used for receiving the alarm information and executing an alarm corresponding to the bottoming grade according to the alarm information.

Description

Technical Field

[0001] The present disclosure relates to battery management system technologies, and particularly to a bottoming detection device, method, control device, storage medium, and program product. Background Art

[0002] Currently, the battery packs of new energy electric vehicles are basically arranged at the bottom of the vehicle, with limited ground clearance, and are prone to bottoming and scraping at the bottom. When the bottoming and scraping are severe, the bottom of the battery pack is squeezed and deformed, which may cause damage to the inside of the battery, resulting in damage to the functions of the battery pack and even fire and explosion incidents. When bottoming and scraping occur at the bottom, it is very difficult for ordinary drivers to evaluate the damage to the bottom layer of the battery. They need to go to a repair station for professional personnel to evaluate and confirm, resulting in a lag in disposal and an inability to eliminate the safety risks brought by battery bottoming in real time.

[0003] In the battery bottoming detection methods in the related art, it is possible to determine whether a bottoming event occurs by detecting whether electrical conduction occurs between different conductive layers at the bottom layer of the battery, or by monitoring the height of obstacles on the ground ahead in real time during driving to detect in advance whether there is a bottoming risk for the battery pack. Summary of the Invention

[0004] One technical problem solved by the present disclosure is that in the battery bottoming detection methods in the related art, it is impossible to determine in real time the bottoming situation of the bottom guard plate at the bottom of the battery pack when a bottoming event occurs.

[0005] According to one aspect of the present disclosure, a bottoming detection device is provided, including: a light source emission device, arranged at one end in the interval between the lower housing of the battery pack and the bottom guard plate, for providing a light beam; a light detection device, arranged at the other end in the interval opposite to the light source emission device, for receiving the light beam and determining reception matrix information corresponding to the light beam according to the light beam; a control device, for obtaining the reception matrix information from the light detection device, obtaining the bottoming height of the bottom guard plate when a bottoming event occurs according to the reception matrix information, determining the bottoming level according to the bottoming height, and sending an alarm information corresponding to the bottoming level according to the bottoming level; and an alarm device, for receiving the alarm information and performing an alarm corresponding to the bottoming level according to the alarm information.

[0006] In some embodiments, the bottoming levels include multiple bottoming levels, and each bottoming level corresponds to a height range; the control device determines the height range to which the bottoming height belongs according to the bottoming height, and determines the bottoming level corresponding to this height range according to the height range to which the bottoming height belongs.

[0007] In some embodiments, the control device is configured to determine that the bottoming level is the first bottoming level when the bottoming height is greater than or equal to a first height threshold, and to determine that the bottoming level is the second bottoming level when the bottoming height is less than the first height threshold and the bottoming height is greater than or equal to a second height threshold, where the first height threshold is greater than the second height threshold.

[0008] In some embodiments, the light detection device and the light source emission device are disposed on the same horizontal plane.

[0009] In some embodiments, the control device is further configured to calculate an estimated value of the deformation area of the bottom guard when a bottoming event occurs based on the bottoming height, where the estimated value of the deformation area is the product of the bottoming height and the width of the battery pack, and the width of the battery pack is the dimension of the battery pack in the width direction perpendicular to the length direction of the vehicle where the battery pack is located.

[0010] In some embodiments, the control device is further configured to determine the bottoming position when a bottoming event occurs on the bottom guard based on the received matrix information, where the bottoming position is the position of the bottoming event in the width direction of the battery pack.

[0011] In some embodiments, the control device is further configured to record the time when a bottoming event occurs on the bottom guard and the bottoming level when the bottoming event occurs on the bottom guard.

[0012] According to another aspect of the present disclosure, there is provided a bottoming detection method, including: obtaining received matrix information, where the received matrix information is information determined based on a light beam received by a light detection device from a light source emission device, and the received matrix information corresponds to the light beam, where the light source emission device is disposed at one end of the gap between the lower housing of the battery pack and the bottom guard, and the light detection device is disposed at the other end of the gap opposite to the light source emission device; obtaining the bottoming height when a bottoming event occurs on the bottom guard based on the received matrix information; determining the bottoming level based on the bottoming height; and sending alarm information corresponding to the bottoming level to an alarm device according to the bottoming level, where the alarm device performs an alarm corresponding to the bottoming level according to the alarm information.

[0013] In some embodiments, the bottoming level includes a plurality of bottoming levels, and each bottoming level corresponds to a height range; determining the bottoming level based on the bottoming height includes: determining the height range to which the bottoming height belongs based on the bottoming height; and determining the bottoming level corresponding to the height range based on the height range to which the bottoming height belongs.

[0014] In some embodiments, determining the grounding level based on the grounding height includes: when the grounding height is greater than or equal to a first height threshold, determining that the grounding level is a first grounding level; and when the grounding height is less than the first height threshold and the grounding height is greater than or equal to a second height threshold, determining that the grounding level is a second grounding level, where the first height threshold is greater than the second height threshold.

[0015] In some embodiments, the grounding detection method further includes: calculating an estimated value of the deformation area when the bottom guard plate experiences a grounding event based on the grounding height, where the estimated value of the deformation area is the product of the grounding height and the width of the battery pack, and the width of the battery pack is the dimension of the battery pack in the width direction perpendicular to the length direction of the vehicle in which the battery pack is located.

[0016] In some embodiments, the grounding detection method further includes: determining the grounding position when the bottom guard plate experiences a grounding event based on the received matrix information, where the grounding position is the position of the grounding event in the width direction of the battery pack.

[0017] In some embodiments, the grounding detection method further includes: recording the time when the bottom guard plate experiences a grounding event and the grounding level when the bottom guard plate experiences a grounding event.

[0018] According to another aspect of the present disclosure, a control device is provided, including: a memory; and a processor coupled to the memory, where the processor is configured to execute the grounding detection method as described above based on instructions stored in the memory.

[0019] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which computer instructions are stored, and when the computer instructions are executed by a processor, the grounding detection method as described above is implemented.

[0020] According to another aspect of the present disclosure, a computer program product is provided, which includes a computer program or instructions, and when the computer program or instructions are executed by a processor, the grounding detection method as described above is implemented.

[0021] In the above-mentioned underbody detection device, a light beam is provided by a light source emission device, a light detection device receives the light beam, and determines the reception matrix information corresponding to the light beam according to the light beam. A control device obtains the reception matrix information from the light detection device, obtains the underbody height when the bottom guard plate has an underbody event according to the reception matrix information, determines the underbody level according to the underbody height, and issues an alarm message corresponding to the underbody level according to the underbody level. An alarm device receives the alarm message and executes an alarm corresponding to the underbody level according to the alarm message, so that the underbody condition of the bottom guard plate at the bottom of the battery pack when an underbody event occurs can be determined in real time.

[0022] Other features and advantages of the present disclosure will become clear from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings forming a part of the specification depict embodiments of the present disclosure and, together with the description, are used to explain the principles of the present disclosure.

[0024] With reference to the accompanying drawings, the present disclosure can be more clearly understood from the following detailed description, where:

[0025] Figure 1 is a schematic block diagram showing the structure of an underbody detection device according to some embodiments of the present disclosure;

[0026] Figure 2 is a schematic assembly diagram showing an underbody detection device and a battery pack according to some embodiments of the present disclosure;

[0027] Figure 3 is a schematic working principle diagram showing real-time detection of battery underbody according to some embodiments of the present disclosure;

[0028] Figure 4 is a schematic diagram showing the reception matrix when no underbody event occurs in a battery pack according to some embodiments of the present disclosure;

[0029] Figure 5 is a schematic diagram showing the reception matrix when an underbody event occurs in a battery pack according to some embodiments of the present disclosure;

[0030] Figure 6 is a bottom view showing an underbody event occurring in a battery pack according to some embodiments of the present disclosure;

[0031] Figure 7 is a side projection view showing an underbody event occurring in a battery pack according to some embodiments of the present disclosure;

[0032] Figure 8 is a flowchart showing an underbody detection method according to some embodiments of the present disclosure;

[0033] Figure 9 is a flowchart showing a bottoming detection method according to other embodiments of the present disclosure;

[0034] Figure 10 is a schematic block diagram showing a control device according to some embodiments of the present disclosure;

[0035] Figure 11 is a schematic block diagram showing a control device according to other embodiments of the present disclosure. Detailed Description of Specific Embodiments

[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0037] Meanwhile, it should be understood that, for the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship.

[0038] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present disclosure, its application, or its use.

[0039] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0040] In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Accordingly, other examples of the exemplary embodiments may have different values.

[0041] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] The inventors of the present disclosure have found that in the battery bottoming detection method in the related art, it is impossible to determine in real time the bottoming condition of the bottom guard plate at the bottom of the battery pack when a bottoming event occurs.

[0043] In view of this, embodiments of the present disclosure provide a bottoming detection device so as to be able to determine in real time the bottoming condition of the bottom guard plate at the bottom of the battery pack when a bottoming event occurs.

[0044] Figure 1 is a schematic block diagram showing a bottoming detection device according to some embodiments of the present disclosure. The bottoming detection device is used to detect the bottoming condition of the bottom guard plate of the battery pack. As Figure 1As shown, the bottoming detection device includes: a light source emission device 110, a light detection device 120, a control device 130, and an alarm device 140.

[0045] For example, Figure 2 is a schematic diagram showing the assembly of the bottoming detection device and the battery pack according to some embodiments of the present disclosure. Figure 2 is a schematic diagram of the battery pack without a bottoming event. Figure 2 shows the upper housing 21 and upper housing 22 of the battery pack, and the bottom guard plate 23 for the battery pack. The bottom guard plate 23 can be part of the battery pack or not.

[0046] Such as Figure 2 As shown, the light source emission device (or referred to as the light source emission module) 110 is disposed at one end of the space between the lower housing 22 of the battery pack and the bottom guard plate 23. Figure 2 shows the length direction of the battery pack, and the length direction of the battery pack is the length direction of the vehicle where the battery pack is located (that is, the direction from the head of the vehicle to the tail or from the tail to the head of the vehicle). For example, the light source emission device 110 is disposed at one end in the length direction of the battery in the above-mentioned space. The light source emission device 110 is used to provide a light beam. That is, the light source emission device is used as the bottoming detection light source. For example, the light emitting plane of the light source emission device can be rectangular, square or other polygonal shapes, so that the light source emission device can emit a whole surface light beam in the shape of a rectangle, square or other polygons.

[0047] Such as Figure 2 As shown, the light detection device (or referred to as the light detection module) 120 is disposed at the other end of the above-mentioned space (that is, the space between the lower housing 22 of the battery pack and the bottom guard plate 23) opposite to the light source emission device 110. That is, the light detection device 120 is disposed at the opposite end of the light source emission device 110. For example, the light detection device 120 and the light source emission device 110 are disposed on the same horizontal plane. This can enable the light detection device to receive all the light beams emitted by the light source emission device when the bottom guard plate does not have a bottoming event. The light detection device 120 is used to receive the light beam and determine the received matrix information corresponding to the light beam according to the light beam. Since the light beam emitted by the light source emission device 110 is a surface light beam, the light beam received by the light detection device 120 is also a surface light beam. The light detection device 120 can obtain received matrix data (that is, received matrix information) from the received surface light beam.

[0048] For example, the optical detection device can select points at predetermined positions on the receiving plane (these points can form a matrix of points), and determine the values of the element points of the receiving matrix based on whether these points receive the light beam. For example, if a certain point on the receiving plane receives the light beam, it is determined that the value of the element of the receiving matrix corresponding to this point is 1; otherwise, the value of the element of the receiving matrix corresponding to this point is 0.

[0049] For example, Figure 4 is a schematic diagram showing the receiving matrix when no bottoming event occurs in the battery pack according to some embodiments of the present disclosure. As Figure 4 shown, all elements of the entire receiving matrix are 1, indicating that the entire receiving plane of the optical detection device 120 receives the light beam, that is, all light beams are not blocked, which indicates that no bottoming occurs in the battery pack.

[0050] Again, for example, Figure 5 is a schematic diagram showing the receiving matrix when a bottoming event occurs in the battery pack according to some embodiments of the present disclosure. As Figure 5 shown, in the entire receiving matrix, some elements are 1 and some elements are 0, indicating that only part of the receiving plane of the optical detection device 120 receives the light beam, and the other part of the receiving plane does not receive the light beam, which indicates that the bottoming of the battery pack causes some light beams to be blocked by the deformed bottom guard 23.

[0051] Returning to Figure 1 , the control device 130 is used to obtain the receiving matrix information from the optical detection device 120, obtain the bottoming height when the bottom guard 23 has a bottoming event based on this receiving matrix information, determine the bottoming level (or referred to as the bottoming fault level) based on this bottoming height, and send alarm information corresponding to the bottoming level according to the bottoming level. For example, this control device is a battery control module.

[0052] For example, Figure 3 is a schematic diagram showing the working principle of real-time detection of battery bottoming according to some embodiments of the present disclosure. Figure 3 shows a schematic diagram of a bottoming event occurring in the battery pack. As Figure 3 shown, a bottoming event occurs in the bottom guard 23 for the battery pack, and the height of the bulge of this bottom guard 23 is the bottoming height H.

[0053] As Figure 5As shown, when the battery pack experiences a bottoming event, some of the light beams will be blocked by the deformed bottom guard plate 23, causing the values of some elements in the receiving matrix to be 0. Therefore, among these elements with a value of 0, the distance between the element at the highest position and the lower edge of the receiving matrix is the bottoming height H. Since the positions of the individual element points in the receiving matrix are known in advance, the distance between the element point at the highest position and with a value of 0 and the lower edge of the receiving matrix can be calculated. That is, the control device 130 can calculate the bottoming height H when the bottom guard plate 23 experiences a bottoming event based on the receiving matrix information.

[0054] In some embodiments, the bottoming levels include multiple bottoming levels, and each bottoming level corresponds to a height range. The control device 130 can determine the height range to which the bottoming height H belongs based on the bottoming height, and determine the bottoming level corresponding to this height range according to the height range to which the bottoming height H belongs.

[0055] For example, among these multiple bottoming levels, different bottoming levels correspond to different degrees of bottoming severity. In this way, the control device 130 determines the corresponding bottoming level according to the height range to which the bottoming height H belongs. Therefore, the degree of bottoming severity of the current bottoming event can be determined.

[0056] For example, the above-mentioned multiple bottoming levels include a first bottoming level and a second bottoming level. The degree of bottoming severity of the first bottoming level is greater than that of the second bottoming level.

[0057] In some embodiments, the control device 130 can be used to determine that the bottoming level is the first bottoming level when the bottoming height H is greater than or equal to the first height threshold H1, and determine that the bottoming level is the second bottoming level when the bottoming height H is less than the first height threshold H1 and the bottoming height H is greater than or equal to the second height threshold H2, where the first height threshold H1 is greater than the second height threshold H2. In this way, the control device can determine the degree of bottoming severity of the current bottoming event, and thus can know the current bottoming situation.

[0058] For example, the first height threshold H1 is less than or equal to the height H0 of the gap between the lower housing of the battery pack and the bottom guard plate.

[0059] In some embodiments, both the first height threshold H1 and the second height threshold H2 are values of a predetermined percentage of the height H0 of the gap between the lower housing of the battery pack and the bottom guard plate.

[0060] For example, the range of the first height threshold H1 is 90%H0 < H1 ≤ H0, and the range of the second height threshold H2 is 0 < H2 ≤ 90%H0.

[0061] It should be noted that the value ranges of the above first height threshold H1 and second height threshold H2 are only exemplary, and the scope of the present disclosure is not limited thereto. For example, the specific values of the first height threshold H1 and the second height threshold H2 can be set as needed, that is, the numerical values of H1 and H2 can be calibrated.

[0062] In some other embodiments, the control device 130 can also be used to determine that no grounding event has occurred when the grounding height H is less than the second height threshold H2. Here, if the grounding height H is less than the second height threshold H2, it means that the grounding situation is relatively mild and will not cause damage to the bottom guard or the battery pack, so this grounding event can be ignored. Therefore, it can be considered that no grounding event has occurred.

[0063] The situation of setting multiple grounding levels is described above. However, the scope of the present disclosure is not limited thereto. For example, in some cases, only one grounding level can be set.

[0064] In some embodiments, different grounding levels can correspond to different alarm messages. The control device 130 can send out alarm messages corresponding to the grounding levels according to the grounding levels.

[0065] As Figure 1 shown, the alarm device 140 is used to receive the above alarm messages and perform an alarm corresponding to the grounding level according to the alarm messages.

[0066] Here, different grounding levels can correspond to different alarm messages. Therefore, the alarm device 140 can perform an alarm corresponding to the grounding level according to the alarm messages.

[0067] For example, the alarm device 140 can emit different sounds or different light messages (such as lights of different colors) according to different grounding levels, or display different grounding level information. In this way, the alarm device 140 can perform different alarms corresponding to different grounding levels.

[0068] So far, a bottoming detection device according to some embodiments of the present disclosure has been provided. The bottoming detection device includes: a light source emission device disposed at one end of the gap between the lower housing of the battery pack and the bottom guard plate for providing a light beam; a light detection device disposed at the other end of the gap opposite to the light source emission device for receiving the light beam and determining reception matrix information corresponding to the light beam according to the light beam; a control device for obtaining the reception matrix information from the light detection device, obtaining the bottoming height when the bottom guard plate has a bottoming event according to the reception matrix information, determining the bottoming level according to the bottoming height, and sending alarm information corresponding to the bottoming level according to the bottoming level; and an alarm device for receiving the alarm information and performing an alarm corresponding to the bottoming level according to the alarm information. The bottoming detection device can determine the bottoming condition of the bottom guard plate at the bottom of the battery pack in real time when a bottoming event occurs. For example, the bottoming detection device can detect and evaluate the bottoming damage condition of the battery pack.

[0069] Moreover, in this bottoming detection device, the bottoming condition can be quantified by the bottoming level, and different alarm prompts are sent to the driver according to different bottoming levels, ensuring the personal safety of the driver and improving the safety of the vehicle.

[0070] In some embodiments, the control device 130 can also be used to determine the bottoming position when the bottom guard plate has a bottoming event according to the reception matrix information. The bottoming position is the position of the bottoming event in the width direction of the battery pack.

[0071] For example, Figure 6 is a bottom view showing a bottoming event of a battery pack according to some embodiments of the present disclosure. Figure 6 The length direction and width direction of the battery pack 20 are shown in. As described above, the length direction of the battery pack 20 is the length direction of the vehicle where the battery pack is located, that is, the direction from the front of the vehicle to the rear or from the rear of the vehicle to the front. The width direction of the battery pack is the direction perpendicular to the length direction of the vehicle where the battery pack is located.

[0072] In this embodiment, the control device 130 can determine the bottoming position P when the bottom guard plate has a bottoming event according to the reception matrix information. The bottoming position P is the position of the bottoming event in the width direction of the battery pack. For example, the control device 130 can determine the position in the width direction of the battery pack corresponding to the element with a value of 0 and the highest and centered position in the matrix in the reception matrix as the bottoming position P. Taking Figure 5 as an example, the position in the width direction of the battery pack corresponding to the element with a value of 0 in the 5th row and 5th column or the 5th row and 6th column can be determined as the bottoming position P. The bottoming position P is an estimated position. By calculating the position of the bottoming event, it is convenient for users to check the bottoming position and after-sales maintenance.

[0073] In some embodiments, the control device 130 may also be used to calculate an estimated value of the deformed area of the bottom guard when a grounding event occurs based on the grounding height. Here, the estimated value of the deformed area is the product of the grounding height and the width of the battery pack. The width of the battery pack is the dimension of the battery pack in the width direction perpendicular to the length direction of the vehicle where the battery pack is located.

[0074] Figure 7 FIG. is a side projection view when a grounding event occurs to a battery pack according to some embodiments of the present disclosure. Here, the deformed area is the area of the projection of the deformed bottom guard 23 on the plane where the receiving plane of the light detection device is located when a grounding event occurs to the bottom guard. It may not be easy to obtain the projection area S, but an estimated value of the projection area S can be obtained. In the above embodiments, the product of the grounding height H and the width W of the battery pack may be used as the estimated value of the deformed area. The estimated value of the deformed area can also reflect the severity of the grounding event to a certain extent. For example, the larger the estimated value of the deformed area, the more severe the grounding event.

[0075] In the above embodiments, by calculating the estimated value of the deformed area, the severity of the grounding event can be obtained.

[0076] In some embodiments, the control device 130 may also be used to record the time when the bottom guard experiences a grounding event (e.g., the date when the grounding event occurs) and the grounding level when the bottom guard experiences a grounding event. For example, the control device may record the above time and grounding level information by controlling an internal or external storage medium. This can be used for further analysis of after-sales grounding or scratching, facilitating liability division and identification.

[0077] Here, by recording the time (e.g., date) when the grounding event occurs and the grounding level (i.e., severity) through the storage medium, it can be used for further analysis of after-sales grounding or scratching, facilitating liability division and identification.

[0078] In some embodiments of the present disclosure, a real-time vehicle battery bottoming detection device is provided. The detection device can detect and evaluate the damage of the battery pack due to bottoming. The detection device includes a light source emission device, a light detection device, a control device, and an alarm device. The light source emission device is used as the bottoming detection light source and is arranged at one end of the space between the lower housing of the battery and the bottom guard plate. The light detection device is used to detect the received light beam and is arranged at the opposite end of the light source emission device. The light detection device and the light source emission device are arranged on the same horizontal plane to ensure that the light detection device can receive all the light beams emitted by the light source emission device under normal non-bottoming conditions. The control device is used to process and calculate the bottoming situation. According to the reception matrix of the light detection device, the deformation area and the bottoming height of the bottom guard plate of the battery pack when a bottoming event occurs can be calculated. According to different bottoming heights, the alarm device is controlled to prompt different bottoming levels, and the position where the bottoming occurs in the battery pack can also be determined.

[0079] Figure 8 is a flowchart showing a bottoming detection method according to some embodiments of the present disclosure. As Figure 8 shown, the bottoming detection method includes steps S802 to S808.

[0080] In step S802, reception matrix information is obtained. The reception matrix information is the information determined according to the light beam received by the light detection device from the light source emission device, and the reception matrix information corresponds to the light beam. The light source emission device is arranged at one end of the space between the lower housing of the battery pack and the bottom guard plate, and the light detection device is arranged at the other end of the space opposite to the light source emission device.

[0081] In step S804, the bottoming height when the bottom guard plate has a bottoming event is obtained according to the reception matrix information.

[0082] In step S806, the bottoming level is determined according to the bottoming height.

[0083] In some embodiments, the bottoming level includes multiple bottoming levels, and each bottoming level corresponds to a height range. Step S806 includes: determining the height range to which the bottoming height belongs according to the bottoming height; and determining the bottoming level corresponding to the height range according to the height range to which the bottoming height belongs.

[0084] In some embodiments, step S806 includes: when the bottoming height is greater than or equal to the first height threshold, determining the bottoming level as the first bottoming level; when the bottoming height is less than the first height threshold and the bottoming height is greater than or equal to the second height threshold, determining the bottoming level as the second bottoming level, where the first height threshold is greater than the second height threshold.

[0085] In step S808, according to the grounding level, alarm information corresponding to the grounding level is sent to the alarm device. The alarm device performs an alarm corresponding to the grounding level according to the alarm information.

[0086] So far, a grounding detection method according to some embodiments of the present disclosure has been provided. The grounding detection method includes: obtaining receiving matrix information; obtaining the grounding height when a grounding event occurs on the bottom guard plate according to the receiving matrix information; determining the grounding level according to the grounding height; and according to the grounding level, sending alarm information corresponding to the grounding level to the alarm device. The grounding detection method can determine in real time the grounding situation of the bottom guard plate at the bottom of the battery pack when a grounding event occurs.

[0087] Moreover, in this grounding detection method, the grounding situation can be quantified by the grounding level, and different alarm prompts are sent to the driver according to different grounding levels to ensure the personal safety of the driver and improve the safety of the vehicle.

[0088] In some embodiments, the grounding detection method further includes: calculating an estimated value of the deformation area when a grounding event occurs on the bottom guard plate according to the grounding height, where the estimated value of the deformation area is the product of the grounding height and the width of the battery pack, and the width of the battery pack is the dimension of the battery pack in the width direction perpendicular to the length direction of the vehicle where the battery pack is located.

[0089] In some embodiments, the grounding detection method further includes: determining the grounding position when a grounding event occurs on the bottom guard plate according to the receiving matrix information, where the grounding position is the position where the grounding event occurs in the width direction of the battery pack.

[0090] In some embodiments, the grounding detection method further includes: recording the time when a grounding event occurs on the bottom guard plate and the grounding level when the grounding event occurs on the bottom guard plate.

[0091] Figure 9 is a flowchart showing a grounding detection method according to other embodiments of the present disclosure. As Figure 9 shown, the grounding detection method includes steps S902 to S924.

[0092] In step S902, the light source emission device self-checks whether it is normal. If so, the process proceeds to step S904; otherwise, the process proceeds to step S906.

[0093] For example, after the light source emission device is powered on, it can detect whether its power supply, interface, and communication are working properly.

[0094] In step S904, the light source emission device works normally. That is, if the self-check of the light source emission device is normal, the light source emission device works normally.

[0095] In step S906, the self-check fails and the grounding detection is not performed.

[0096] In step S908, the alarm device prompts a fault in the light source emission device. For example, when the light source emission device detects a fault in itself, it sends a first fault message to the control device. In this way, the control device instructs the alarm device to give an alarm according to the first fault message.

[0097] In step S910, the light detection device checks whether it is normal. If so, the process proceeds to step S912; otherwise, the process proceeds to step S914. Here, the light detection device continuously receives the light beam emitted by the light source emission device and detects the light beam across the entire receiving plane.

[0098] For example, after power-on, the light detection device can check whether its power supply, interfaces, and communication are working properly.

[0099] In step S912, the light detection device detects and sends information to the control device. That is, the light detection device works normally, detects the received light source situation, and sends the received matrix information to the control device.

[0100] In step S914, the detection fails and the underrun detection is not performed.

[0101] In step S916, the alarm device prompts a fault in the light detection device. For example, when the light detection device detects a fault in itself, it sends a second fault message to the control device. In this way, the control device instructs the alarm device to give an alarm according to the second fault message.

[0102] In step S918, the control device determines whether the underrun height H is greater than or equal to H1. That is, the control device processes and calculates the underrun height H and determines whether H is greater than or equal to the first height threshold H1. If so, the process proceeds to step S920; otherwise, the process proceeds to step S922.

[0103] In step S920, the alarm device gives an alarm to prompt the first underrun level. That is, if the underrun height H is greater than or equal to the first height threshold H1, the alarm device gives an alarm to indicate that an underrun has occurred and (for example, by display or sound) prompts that the underrun fault level is the first underrun level.

[0104] In step S922, the control device determines whether the underrun height H is greater than or equal to H2. That is, if the calculated underrun height H is less than the first height threshold H1, the control device continues to determine whether the underrun height H is greater than or equal to the second height threshold H2. If so, the process proceeds to step S924; otherwise, the process returns to step S912, that is, continues to implement the underrun detection event.

[0105] In step S924, the alarm device gives an alarm to indicate the second bottoming level. That is, if the bottoming height H is greater than or equal to the second height threshold H2, the alarm device gives an alarm to indicate that bottoming has occurred and (for example, by means of display or sound) indicates that the bottoming fault level is the second bottoming level.

[0106] So far, a bottoming detection method according to some embodiments of the present disclosure has been provided. Through this bottoming detection method, it is possible to realize real-time detection of the bottoming situation of the battery and judge the damage condition of the bottom of the bottomed battery pack. According to different levels, obvious signal (such as sound or light information) devices are used to prompt the driver.

[0107] Figure 10 is a schematic block diagram showing the structure of a control device according to some embodiments of the present disclosure. The control device includes a memory 131 and a processor 132. Among them:

[0108] The memory 131 can be a magnetic disk, a flash memory, or any other non-volatile storage medium. The memory is used to store Figure 8 and / or Figure 9 the instructions corresponding to the corresponding embodiments.

[0109] The processor 132 is coupled to the memory 131 and can be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 132 is used to execute the instructions stored in the memory, so as to be able to determine in real time the bottoming situation of the bottom guard plate at the bottom of the battery pack when a bottoming event occurs.

[0110] In some embodiments, as Figure 11 shown, the control device 130 includes a memory 131 and a processor 132. The processor 132 is coupled to the memory 131 through the BUS bus 133. The control device 130 can also be connected to an external storage device 135 through a storage interface 134 to call external data, and can also be connected to a network or another computer system (not shown) through a network interface 136. Details are not described here.

[0111] In this embodiment, data instructions are stored in the memory, and then the above instructions are processed by the processor, so as to be able to determine in real time the bottoming situation of the bottom guard plate at the bottom of the battery pack when a bottoming event occurs.

[0112] In some embodiments, the present disclosure also provides a computer-readable storage medium (for example, a non-transitory computer-readable storage medium) on which computer program instructions are stored, and when the instructions are executed by a processor, they implement Figure 8 and / or Figure 9Steps of the method in the corresponding embodiment. Those skilled in the art should understand that the embodiments of the present disclosure can be provided as methods, devices, or computer program products. Therefore, the present disclosure can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure can take the form of a computer program product implemented on one or more computer-usable non-transitory storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program code.

[0113] In the above embodiment, the computer program instructions stored in the above storage medium, after being executed by the processor, can record the time (e.g., date) and severity of the underrun event, which can be used for further analysis of after-sales underrun or scratches, facilitating liability determination and identification.

[0114] The present disclosure is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the specified functions in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0115] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implements the specified functions in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0116] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the specified functions in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0117] So far, the present disclosure has been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0118] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A bottom support detection device, comprising: A light source emitting device, disposed at one end of the interval between the lower shell of the battery pack and the bottom guard plate, for providing a light beam; a light detection device, arranged at the other end of the interval opposite to the light source emitting device, for receiving the light beam and determining receiving matrix information corresponding to the light beam according to the light beam; A control device, used for obtaining the receiving matrix information from the light detection device, obtaining a bottoming height of the bottom guard plate when a bottoming event occurs according to the receiving matrix information, determining a bottoming level according to the bottoming height, and issuing an alarm message corresponding to the bottoming level according to the bottoming level; and The alarm device is used to receive the alarm information and execute an alarm corresponding to the bottoming level according to the alarm information.

2. The bottom support detection device according to claim 1, wherein: The bottom support level includes multiple bottom support levels, each bottom support level corresponds to a height range; The control device determines the height range to which the bottom supporting height belongs according to the bottom supporting height, and determines the bottom supporting level corresponding to the height range according to the height range to which the bottom supporting height belongs.

3. The bottom support detection device according to claim 1 or 2, wherein: The control device is used to determine that the bottom supporting level is a first bottom supporting level when the bottom supporting height is greater than or equal to a first height threshold, and to determine that the bottom supporting level is a second bottom supporting level when the bottom supporting height is less than the first height threshold and the bottom supporting height is greater than or equal to a second height threshold, wherein the first height threshold is greater than the second height threshold.

4. The bottom support detection device according to claim 1, wherein: The light detection device and the light source emitting device are arranged on the same horizontal plane.

5. The bottom support detection device according to claim 1, wherein: The control device is also used to calculate an estimated value of the deformation area of ​​the bottom guard plate when a bottoming event occurs based on the bottoming height, wherein the estimated value of the deformation area is the product of the bottoming height and the width of the battery pack, and the width of the battery pack is the dimension of the battery pack in a width direction perpendicular to the length direction of the vehicle where the battery pack is located.

6. The bottom support detection device according to claim 5, wherein: The control device is also used to determine the bottoming position of the bottom guard plate when a bottoming event occurs based on the received matrix information, wherein the bottoming position is the position where the bottoming event occurs in the width direction of the battery pack.

7. The bottom support detection device according to claim 1, wherein: The control device is also used to record the time when the bottom guard plate bottoms out and the bottoming level when the bottom guard plate bottoms out.

8. A bottom support detection method, comprising: Obtaining receiving matrix information, wherein the receiving matrix information is information determined by receiving a light beam from a light source emitting device through a light detection device and according to the light beam, and the receiving matrix information corresponds to the light beam, wherein the light source emitting device is arranged at one end of the interval between the lower shell of the battery pack and the bottom guard plate, and the light detection device is arranged at the other end of the interval opposite to the light source emitting device; Obtaining the bottom support height of the bottom guard plate when a bottom support event occurs according to the receiving matrix information; Determining a support level according to the support height; and According to the bottoming level, an alarm message corresponding to the bottoming level is sent to an alarm device, wherein the alarm device executes an alarm corresponding to the bottoming level according to the alarm message.

9. The bottom support detection method according to claim 8, wherein: The bottom support level includes multiple bottom support levels, each bottom support level corresponds to a height range; Determining the bottom support level according to the bottom support height includes: Determining a height range to which the bottom support height belongs according to the bottom support height; and A bottom supporting level corresponding to the height range is determined according to the height range to which the bottom supporting height belongs.

10. The bottom support detection method according to claim 8 or 9, wherein: Determining the bottom support level according to the bottom support height includes: In the case where the bottoming height is greater than or equal to a first height threshold, determining the bottoming level to be a first bottoming level; and When the bottoming height is less than the first height threshold and the bottoming height is greater than or equal to a second height threshold, the bottoming level is determined to be a second bottoming level, wherein the first height threshold is greater than the second height threshold.

11. The bottom support detection method according to claim 8, further comprising: An estimated value of the deformation area of ​​the bottom guard plate when a bottoming event occurs is calculated based on the bottoming height, wherein the estimated value of the deformation area is the product of the bottoming height and the width of the battery pack, and the width of the battery pack is the dimension of the battery pack in a width direction perpendicular to the length direction of the vehicle where the battery pack is located.

12. The bottom support detection method according to claim 11, further comprising: The bottoming position of the bottom guard plate when a bottoming event occurs is determined according to the receiving matrix information, wherein the bottoming position is the position where the bottoming event occurs in the width direction of the battery pack.

13. The bottom support detection method according to claim 8, further comprising: The time when the bottom guard plate bottoms out and the bottoming level when the bottom guard plate bottoms out are recorded.

14. A control device comprising: Memory; as well as A processor coupled to the memory, wherein the processor is configured to execute the bottoming detection method according to any one of claims 8 to 13 based on instructions stored in the memory.

15. A computer-readable storage medium having computer instructions stored thereon, wherein the computer instructions, when executed by a processor, implement the bottom support detection method according to any one of claims 8 to 13.

16. A computer program product, comprising a computer program or an instruction, wherein the computer program or the instruction, when executed by a processor, implements the bottoming detection method according to any one of claims 8 to 13.

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