Collision monitoring device and method for power battery pack

Abstract

The invention discloses a collision monitoring device and method for a power battery pack. The device comprises a box body, the power battery pack, a grating detection module and a data processing module, the power battery pack and the grating detection module are assembled in the box body, the grating detection module is arranged below the power battery pack, a detection light curtain is formed below the power battery pack, and the grating detection module is provided with a detection signal output port. And the detection signal output port is connected with the signal input port of the data processing module. The grating detection module is arranged below the power battery pack, so that real-time collision monitoring can be carried out on the power battery pack in the running process of the electric vehicle, the position of a shielding object penetrating through the detection light curtain can be recognized, alarm information can be generated timely and accurately, a user is reminded, and the safety of the electric vehicle is improved. And the explosion of the power battery pack is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a collision monitoring device and method for a power battery pack. Background Art

[0002] In recent years, with the increasing popularity of electric vehicles, spontaneous combustion accidents of electric vehicle power battery packs have occurred frequently. One of the reasons is that during the driving of the electric vehicle, the lower tray of the power battery pack is hit, such as external impact or scratch, which causes the power battery pack to deform and cause internal short circuit and spontaneous combustion, resulting in serious consequences.

[0003] Since the power battery pack is usually installed under the chassis of the car, its lower tray is not protected by the body structure, has a large area and a small ground clearance, so it is easy to be hit or scratched by external forces during the driving of the electric vehicle. Moreover, the damage to the lower tray is located at the bottom of the power battery pack, which is not easy to detect and is hidden. In addition, when the lower tray is hit or scratched by external forces, the power battery pack may not immediately short-circuit and catch fire, and the electric vehicle can continue to drive. However, the lower tray may have pits or cracks at this time, causing the battery module to be squeezed, or the power battery pack is easy to get water inside and short-circuit, which in turn causes the power battery pack to catch fire and explode.

[0004] In the prior art, in order to prevent the explosion of the power battery pack, the power battery pack is usually only powered off after a collision of the entire vehicle, but the power battery pack is not monitored for collision during the driving of the electric vehicle, so the explosion of the power battery pack cannot be effectively prevented. Summary of the invention

[0005] The present invention provides a collision monitoring device and method for a power battery pack. By arranging a grating detection module under the power battery pack, the power battery pack can be monitored for collision in real time during the driving of an electric vehicle, and the position of an obstruction passing through the detection light curtain can be identified, which helps to generate alarm information in a timely and accurate manner and remind users, thereby effectively avoiding the explosion of the power battery pack.

[0006] In order to solve the above technical problems, a first aspect of an embodiment of the present invention provides a collision monitoring device for a power battery pack, including a box body, a power battery pack, a grating detection module and a data processing module;

[0007] The power battery pack and the grating detection module are assembled in the box body. The grating detection module is arranged below the power battery pack and forms a detection light curtain below the power battery pack. The grating detection module has a detection signal output port, and the detection signal output port is connected to the signal input port of the data processing module.

[0008] As a preferred solution, the grating detection module includes an optical signal transmitting unit and an optical signal receiving unit;

[0009] The optical signal emitting unit includes a plurality of optical signal emitting elements, and the optical signal receiving unit includes a plurality of optical signal receiving elements opposite to the optical signal emitting elements. The detection light curtain is formed between the optical signal emitting unit and the optical signal receiving unit.

[0010] As a preferred solution, the optical signal emitting unit and the optical signal receiving unit are arranged parallel to the length direction of the power battery pack, and the length of the optical signal emitting unit and the optical signal receiving unit is greater than or equal to the length of the power battery pack, and the distance between the optical signal emitting unit and the optical signal receiving unit is greater than or equal to the width of the power battery pack.

[0011] As a preferred solution, it also includes a first fixing frame and a second fixing frame;

[0012] The first fixing frame includes a first supporting portion and a second supporting portion, and a first fixing groove is formed between the first supporting portion and the second supporting portion; the second fixing frame includes a third supporting portion and a fourth supporting portion, and a second fixing groove is formed between the third supporting portion and the fourth supporting portion; two sides of the bottom of the power battery pack are respectively arranged in the first fixing groove and the second fixing groove; the grating detection module is arranged below the first fixing frame and the second fixing frame.

[0013] As a preferred solution, the box body includes a top cover and a box body; the box body has a housing cavity for assembling the power battery pack and the grating detection module, and the top cover is covered on the box body.

[0014] A second aspect of an embodiment of the present invention provides a collision monitoring method for a power battery pack, which is applied to a collision monitoring device for a power battery pack as described in any one of the first aspects, comprising:

[0015] When it is detected that there is an obstruction blocking the light in the light curtain based on the detection signal sent by the grating detection module, the coordinate information and the blocking state of the obstruction are obtained according to the detection signal;

[0016] The timestamp of the detection signal, the coordinate information and the occlusion status are sent to the vehicle controller to instruct the vehicle controller to generate alarm information based on the timestamp, the coordinate information and the occlusion status and display it through the central control instrument panel.

[0017] As a preferred solution, the method specifically obtains the coordinate information of the obstruction through the following steps:

[0018] Preprocessing the detection signal to obtain a detection digital signal;

[0019] Acquiring light blocking information according to the detected digital signal;

[0020] According to the light blocking information, obtaining the blocking area of ​​the blocking object and a plurality of blocked light signal transmitting elements and a plurality of blocked light signal receiving elements;

[0021] The coordinate point data of the shielding object is calculated according to the preset position information of each light signal emitting element and light signal receiving element in the grating detection module, the shielding area, the shielded light signal emitting element and the shielded light signal receiving element.

[0022] As a preferred solution, after calculating the coordinate point data of the blocking object, the method further includes:

[0023] The coordinate point data is subjected to anti-counterfeiting processing to obtain the coordinate information of the blocking object.

[0024] As a preferred solution, the method specifically obtains the blocking state of the blocking object through the following steps:

[0025] When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is less than a first preset time, determining that the shielding state of the shielding object is a shielding object entry state;

[0026] When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is greater than the first preset time and the coordinate information changes, determining that the shielding state of the shielding object is a shielding object moving state;

[0027] When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is greater than the first preset time and the coordinate information remains unchanged, it is determined that the shielding state of the shielding object is a chassis deformation state.

[0028] As a preferred embodiment, the method further comprises:

[0029] Calculating the size information of the obstruction according to the coordinate point data of the obstruction;

[0030] The size information is sent to the vehicle-mounted controller to instruct the vehicle-mounted controller to send the size information to the central control instrument panel for display.

[0031] Compared with the prior art, the beneficial effect of the embodiments of the present invention lies in that, by arranging a grating detection module under the power battery pack, the power battery pack can be monitored for collision in real time during the driving of the electric vehicle, and the position of the obstruction passing through the detection light curtain can be identified, which helps to generate alarm information and remind users in a timely and accurate manner, thereby effectively avoiding the explosion of the power battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of a collision monitoring device for a power battery pack in an embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of a detection grating in a grating detection module in an embodiment of the present invention;

[0034] Figure 3 is a signal transmission architecture diagram of a collision monitoring device for a power battery pack in an embodiment of the present invention;

[0035] Figure 4 is a schematic flow chart of a collision monitoring method for a power battery pack in an embodiment of the present invention;

[0036] Among them, 1. box body; 11. top cover; 12. box body; 2. power battery pack; 3. grating detection module; 31. optical signal transmitting unit; 32. optical signal receiving unit; 4. detection light curtain; 5. first fixing frame; 6. second fixing frame; 7. data processing module. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1 , a first aspect of an embodiment of the present invention provides a collision monitoring device for a power battery pack, comprising a box body 1, a power battery pack 2, a grating detection module 3 and a data processing module 7;

[0039] The power battery pack 2 and the grating detection module 3 are assembled in the box body 1. The grating detection module 3 is arranged below the power battery pack 2 and forms a detection light curtain 4 below the power battery pack 2. The grating detection module 3 has a detection signal output port, and the detection signal output port is connected to the signal input port of the data processing module 7.

[0040] Specifically, the box body 1 in this embodiment has a housing cavity for assembling the power battery pack 2 and the grating detection module 3, and the box body 1 supports and protects the power battery pack 2 and the grating detection module 3. Furthermore, the grating detection module 3 is arranged below the power battery pack 2, so that during the driving of the electric vehicle, if the chassis is deformed by scratches and approaches the power battery pack 2, or there is an obstruction passing through the detection light curtain 4, so that the power battery pack 2 is at risk of collision, the detection light curtain 4 can be used for timely detection, and the detection signal output by the grating detection module 3 can be processed by the data processing module 7 to identify the position of the obstruction when it passes through the detection light curtain 4, so that the relevant information of the obstruction, such as the detection timestamp, position, type of obstruction, size, etc., can be transmitted to the vehicle controller to link the cockpit central control to remind the user. In addition, arranging the grating detection module 3 below the power battery pack 2 can also avoid misidentifying the power battery pack 2 as an obstruction, thereby ensuring the accuracy of collision monitoring.

[0041] As one of the optional embodiments, the power battery pack 2 is composed of a plurality of battery modules and a battery pack manager. The controlled end of the battery pack manager is connected to the control end of the vehicle controller via a CAN bus, so that after receiving the alarm message, the user can control the battery pack manager through the vehicle controller to turn off the power of the power battery pack 2 to avoid the power battery pack 2 from exploding due to collision.

[0042] As a preferred solution, the grating detection module 3 includes an optical signal transmitting unit 31 and an optical signal receiving unit 32;

[0043] The optical signal emitting unit 31 includes a plurality of optical signal emitting elements, and the optical signal receiving unit 32 includes a plurality of optical signal receiving elements opposite to the optical signal emitting elements. The detection light curtain 4 is formed between the optical signal emitting unit 31 and the optical signal receiving unit 32 .

[0044] Specifically, Figure 2 As shown, the grating detection module 3 includes a light signal emitting unit 31 and a light signal receiving unit 32, and the light signal emitting unit 31 includes a plurality of light signal emitting elements. It is worth noting that the present embodiment does not specifically limit the number of light signal emitting elements. The more light signal emitting elements there are and the denser the arrangement is, the denser the light distribution in the detection light curtain 4 will be, thereby improving the detection accuracy of the obstruction. Correspondingly, the light signal receiving unit 32 includes a plurality of light signal receiving elements opposite to the light signal emitting elements. The light emitted by the light signal emitting elements includes a direct light beam perpendicular to the light signal emitting unit 31 and an oblique light beam with a certain inclination angle, so that when the obstruction passes through, the obstruction area of ​​the obstruction can be determined according to each obstruction light beam and the intersection between different obstruction light beams.

[0045] As a preferred solution, the optical signal emitting unit 31 and the optical signal receiving unit 32 are arranged parallel to the length direction of the power battery pack 2, and the length of the optical signal emitting unit 31 and the optical signal receiving unit 32 is greater than or equal to the length of the power battery pack 2, and the distance between the optical signal emitting unit 31 and the optical signal receiving unit 32 is greater than or equal to the width of the power battery pack 2.

[0046] Specifically, Figure 3 As shown, the optical signal emitting unit 31 and the optical signal receiving unit 32 in this embodiment are arranged parallel to the length direction of the power battery pack 2. In order to ensure the effectiveness of collision monitoring, the length of the optical signal emitting unit 31 and the optical signal receiving unit 32 is greater than or equal to the length of the power battery pack 2, and the distance between the two is greater than or equal to the width of the power battery pack 2, so as to ensure that the range of the detection light curtain 4 is greater than or equal to the projection area of ​​the bottom of the power battery pack 2. When there is an object that has a collision risk with the power battery pack 2, it can be ensured that it passes through the detection light curtain 4 and is detected, thereby avoiding missed detection.

[0047] As a preferred solution, it also includes a first fixing frame 5 and a second fixing frame 6;

[0048] The first fixing frame 5 includes a first supporting portion and a second supporting portion, and a first fixing groove is formed between the first supporting portion and the second supporting portion; the second fixing frame 6 includes a third supporting portion and a fourth supporting portion, and a second fixing groove is formed between the third supporting portion and the fourth supporting portion; the two sides of the bottom of the power battery pack 2 are respectively arranged in the first fixing groove and the second fixing groove; the grating detection module 3 is arranged below the first fixing frame 5 and the second fixing frame 6.

[0049] Specifically, in order to further improve the assembly stability of the power battery pack 2, the present embodiment utilizes the first fixing frame 5 and the second fixing frame 6 to support the two sides of the bottom of the power battery pack 2, and assembles the power battery pack 2 in the first fixing groove and the second fixing groove, which can effectively prevent the power battery pack 2 from being displaced during driving of the vehicle, thereby reducing the risk of collision.

[0050] As a preferred solution, the box body 1 includes a top cover 11 and a box body 12 ; the box body 12 has a housing cavity for assembling the power battery pack 2 and the grating detection module 3 , and the top cover 11 covers the box body 12 .

[0051] See also Figure 4 A second aspect of an embodiment of the present invention provides a collision monitoring method for a power battery pack, which is applied to a collision monitoring device for a power battery pack as described in any embodiment of the first aspect, and includes the following steps S1 and S2:

[0052] Step S1, when it is detected that there is an obstruction blocking the light in the light curtain based on the detection signal sent by the grating detection module, the coordinate information and the blocking state of the obstruction are obtained according to the detection signal;

[0053] Step S2, sending the timestamp of the detection signal, the coordinate information and the occlusion status to the vehicle controller to instruct the vehicle controller to generate alarm information based on the timestamp, the coordinate information and the occlusion status and display it through the central control instrument panel.

[0054] Specifically, when the light curtain is not penetrated by an obstruction, the intensity of light received by each optical signal receiving element in the grating detection module is constant. When an obstruction blocks part of the light in the light curtain, the intensity of light received by some optical signal receiving elements will change due to the obstruction of the received light, and the corresponding electrical signal will also change. Therefore, based on the detection signal sent by the grating detection module, it is possible to determine whether there is an obstruction blocking the light in the light curtain. In addition, because when part of the light in the light curtain is blocked, the intensity of light received by some optical signal receiving elements changes, while the intensity of light received by the remaining optical signal receiving elements remains constant. Therefore, based on the detection signal, it is possible to clearly identify which light between the optical signal transmitting element and the optical signal receiving element is blocked, as well as the blocking duration of the obstruction, so that the coordinate information and blocking status of the obstruction can be determined.

[0055] In order to accurately inform the user of the collision risk of the power battery pack, the present embodiment first obtains the timestamp of the detection signal corresponding to the presence of the obstruction, which can indicate the moment when the power battery pack is hit or at risk of collision. The timestamp, the coordinate information and the obstruction status of the obstruction obtained above are then sent to the vehicle controller to instruct the vehicle controller to generate corresponding alarm information and link it to the central control instrument panel for display, thereby informing the user of the appearance time and location of the collision risk object and its obstruction status for the grating detection module.

[0056] As one of the optional embodiments, corresponding conditions can be set for the timestamp of the detection signal, the coordinate information of the obstruction and the reporting of the obstruction status. For example, based on the assembly position of the power battery pack, a risk coordinate range is pre-set. When the coordinate information of the obstruction is within the risk coordinate range, it is determined that the obstruction may collide with the power battery pack, and the relevant collision monitoring information is reported to the vehicle controller.

[0057] As one of the optional embodiments, considering that the power battery pack is usually prone to collision during the ups and downs of the car, this embodiment can pre-configure a sensor in the electric car to detect the ups and downs of the car. When the ups and downs detection signal transmitted by the sensor is detected, the grating detection module is started to monitor the power battery pack for collision. Within a preset time period, such as 5 minutes, 10 minutes, 15 minutes, etc., if the ups and downs detection signal transmitted by the sensor is no longer detected, the grating detection module is turned off after the preset time period. During the preset time period, the power battery pack needs to be continuously monitored for collision, thereby effectively avoiding the explosion of the power battery pack while saving the power consumption of the grating detection module.

[0058] As a preferred solution, the method specifically obtains the coordinate information of the obstruction through the following steps:

[0059] Preprocessing the detection signal to obtain a detection digital signal;

[0060] Acquiring light blocking information according to the detected digital signal;

[0061] According to the light blocking information, obtaining the blocking area of ​​the blocking object and a plurality of blocked light signal transmitting elements and a plurality of blocked light signal receiving elements;

[0062] The coordinate point data of the shielding object is calculated according to the preset position information of each light signal emitting element and light signal receiving element in the grating detection module, the shielding area, the shielded light signal emitting element and the shielded light signal receiving element.

[0063] Specifically, in order to accurately obtain the coordinate information of the obstruction, the present embodiment first pre-processes the acquired detection signal, including photoelectric conversion processing, signal amplification processing, filtering and noise reduction processing, sampling, analog-to-digital conversion processing, digital signal filtering processing, data error correction processing, feature extraction, signal reconstruction, etc., and finally obtains the detection digital signal, based on which the light blocking information can be obtained. For example, assuming that each light signal transmitter and light signal receiver in the grating detection module are configured with corresponding numbers, the numbers of the blocked light signal transmitter and the blocked light signal receiver can be determined based on the light blocking information, and the blocked infrared light can be determined, so that the blocking area of ​​the obstruction can be determined, that is, the location of the obstruction. Furthermore, since the size and position distribution of the light curtain in the grating detection module are predetermined, the position information of each blocked light signal transmitter and the blocked light signal receiver can be determined based on the preset position information of each light signal transmitter and the light signal receiver in the grating detection module. Furthermore, since the location of the occluding area of ​​the occluding object has been determined, the coordinate point data corresponding to the occluding object can be calculated.

[0064] As a preferred solution, after calculating the coordinate point data of the blocking object, the method further includes:

[0065] The coordinate point data is subjected to anti-counterfeiting processing to obtain the coordinate information of the blocking object.

[0066] As a preferred solution, the method specifically obtains the blocking state of the blocking object through the following steps:

[0067] When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is less than a first preset time, determining that the shielding state of the shielding object is a shielding object entry state;

[0068] When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is greater than the first preset time and the coordinate information changes, determining that the shielding state of the shielding object is a shielding object moving state;

[0069] When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is greater than the first preset time and the coordinate information remains unchanged, it is determined that the shielding state of the shielding object is a chassis deformation state.

[0070] Specifically, considering that the obstruction passing through the detection light curtain may pass through instantly, may move within the detection range of the detection light curtain, or may always block the light in the detection light curtain, the present embodiment sets a first preset time to distinguish different blocking states of the obstruction. Since the time taken for the obstruction to pass through the detection light curtain instantly is usually short, the first preset time can be set to 2s, 3s, 4s, etc., which is not specifically limited in the present embodiment. The grating detection module continuously monitors the collision of the power battery pack, so a continuous detection signal is generated. Based on the timestamp of the continuous detection signal when the existence of the obstruction is detected, the blocking duration of the obstruction can be obtained. If the blocking duration of the obstruction is less than the first preset time, it is determined that the obstruction passes through the detection light curtain instantly, and therefore its blocking state is determined to be the obstruction entry state. If the blocking duration of the obstruction is greater than the first preset time and the coordinate information changes, it indicates that the obstruction moves within the detection range of the detection light curtain, and therefore its blocking state is determined to be the obstruction moving state. If the obstruction duration of the obstruction is greater than the first preset time and the coordinate information remains unchanged, it indicates that the obstruction is stationary and always blocks part of the light in the detection light curtain, so it is determined that this is caused by the chassis being hit or scratched by external force and the appearance of a dent, and therefore the obstruction state of the obstruction is determined to be the chassis deformation state.

[0071] As a preferred embodiment, the method further comprises:

[0072] Calculating the size information of the obstruction according to the coordinate point data of the obstruction;

[0073] The size information is sent to the vehicle-mounted controller to instruct the vehicle-mounted controller to send the size information to the central control instrument panel for display.

[0074] Specifically, since the coordinate point data of the obstruction area of ​​the obstruction has been calculated based on the position information of each obstructed light signal transmitter and the obstructed light signal receiver, the area of ​​the obstruction area can be further calculated as the size information of the obstruction, and the size information is sent to the vehicle-mounted controller to link the central control instrument panel to display the size information of the obstruction, which helps users to more clearly understand the collision risk of the power battery pack.

[0075] The collision monitoring method for a power battery pack provided in an embodiment of the present invention can perform real-time collision monitoring of the power battery pack during the driving of an electric vehicle by setting a grating detection module under the power battery pack, and can identify the position of obstructions passing through the detection light curtain, which helps to generate alarm information and remind users in a timely and accurate manner, thereby effectively avoiding the explosion of the power battery pack.

[0076] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A collision monitoring device for a power battery pack, characterized in that: It includes a box body, a power battery pack, a grating detection module and a data processing module; The power battery pack and the grating detection module are assembled in the box body. The grating detection module is arranged below the power battery pack and forms a detection light curtain below the power battery pack. The grating detection module has a detection signal output port, and the detection signal output port is connected to the signal input port of the data processing module.

2. The collision monitoring device for a power battery pack according to claim 1, characterized in that: The grating detection module includes a light signal transmitting unit and a light signal receiving unit; The optical signal emitting unit includes a plurality of optical signal emitting elements, the optical signal receiving unit includes a plurality of optical signal receiving elements opposite to the optical signal emitting elements, and the detection light curtain is formed between the optical signal emitting unit and the optical signal receiving unit.

3. The collision monitoring device for a power battery pack according to claim 2, characterized in that: The optical signal emitting unit and the optical signal receiving unit are arranged parallel to the length direction of the power battery pack, and the length of the optical signal emitting unit and the optical signal receiving unit is greater than or equal to the length of the power battery pack, and the distance between the optical signal emitting unit and the optical signal receiving unit is greater than or equal to the width of the power battery pack.

4. The collision monitoring device for a power battery pack according to claim 1, characterized in that: Also includes a first fixing frame and a second fixing frame; The first fixing frame includes a first supporting portion and a second supporting portion, and a first fixing groove is formed between the first supporting portion and the second supporting portion; the second fixing frame includes a third supporting portion and a fourth supporting portion, and a second fixing groove is formed between the third supporting portion and the fourth supporting portion; two sides of the bottom of the power battery pack are respectively arranged in the first fixing groove and the second fixing groove; the grating detection module is arranged below the first fixing frame and the second fixing frame.

5. The collision monitoring device for a power battery pack according to claim 1, characterized in that: The box body comprises a top cover and a box body; the box body has a containing cavity for assembling the power battery pack and the grating detection module, and the top cover is covered on the box body.

6. A collision monitoring method for a power battery pack, applied to the collision monitoring device for a power battery pack as claimed in any one of claims 1 to 5, characterized in that: include: When it is detected that there is an obstruction blocking the light in the light curtain based on the detection signal sent by the grating detection module, the coordinate information and the blocking state of the obstruction are obtained according to the detection signal; The timestamp of the detection signal, the coordinate information and the occlusion status are sent to the vehicle controller to instruct the vehicle controller to generate alarm information based on the timestamp, the coordinate information and the occlusion status and display it through the central control instrument panel.

7. The collision monitoring method for a power battery pack according to claim 6, characterized in that: The method specifically obtains the coordinate information of the obstruction through the following steps: Preprocessing the detection signal to obtain a detection digital signal; Acquiring light blocking information according to the detected digital signal; According to the light blocking information, obtaining the blocking area of ​​the blocking object and a plurality of blocked light signal transmitting elements and a plurality of blocked light signal receiving elements; The coordinate point data of the shielding object is calculated according to the preset position information of each light signal emitting element and light signal receiving element in the grating detection module, the shielding area, the shielded light signal emitting element and the shielded light signal receiving element.

8. The collision monitoring method for a power battery pack according to claim 7, characterized in that: After calculating the coordinate point data of the blocking object, the method further includes: The coordinate point data is subjected to anti-counterfeiting processing to obtain the coordinate information of the blocking object.

9. The collision monitoring method for a power battery pack according to claim 6, characterized in that: The method specifically obtains the occlusion state of the occluding object through the following steps: When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is less than a first preset time, determining that the shielding state of the shielding object is a shielding object entry state; When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is greater than the first preset time and the coordinate information changes, determining that the shielding state of the shielding object is a shielding object moving state; When it is detected based on the timestamp of the detection signal that the shielding duration of the shielding object is greater than the first preset time and the coordinate information remains unchanged, it is determined that the shielding state of the shielding object is a chassis deformation state.

10. The collision monitoring method for a power battery pack according to claim 7, characterized in that: The method further comprises: Calculating the size information of the obstruction according to the coordinate point data of the obstruction; The size information is sent to the vehicle-mounted controller to instruct the vehicle-mounted controller to send the size information to the central control instrument panel for display.

Images