Vehicle collision protection method, device and computer storage medium

Abstract

The present invention discloses a vehicle collision protection method, device and computer storage medium, the method comprising: a vehicle controller receiving a collision signal sent by a collision sensor of a target vehicle, the collision sensor being mounted at a position corresponding to a collision protection portion of the target vehicle, including a power battery compartment and / or a high-voltage compartment of the target vehicle; the vehicle controller judging whether the collision effect satisfies a preset circuit protection condition based on the collision signal; if so, the vehicle controller cuts off the high-voltage circuit of the target vehicle. It can be seen that the implementation of the present invention can automatically cut off the vehicle's high-voltage circuit when it detects that the collision signal of the vehicle's power battery compartment and high-voltage compartment meets the preset circuit protection condition, thereby reducing the situation where the driver is unable to respond to the warning in time after an emergency collision accident occurs, and reducing the possibility of the high-voltage circuit catching fire due to a short circuit when an emergency collision event affects the power battery compartment or the high-voltage compartment, thereby improving the safety of people in the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle safety technology, and in particular to a vehicle collision protection method, device and computer storage medium. Background Art

[0002] To reduce the risk of collisions to occupants, vehicles are currently equipped with collision warning systems. These systems constantly monitor surrounding vehicles and obstacles, identify them, and warn the driver if a potential collision risk exists. However, in practice, it has been found that for new energy vehicles, when an emergency collision occurs very quickly, the driver has little time to react to the warning. Furthermore, if the collision affects the power battery compartment or high-voltage compartment, it can easily cause a vehicle fire. If occupants are unable to quickly escape the vehicle, the consequences can be even more serious. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a vehicle collision protection method, device and computer storage medium, which can reduce the situation where the driver is unable to respond to the warning in time due to an emergency collision accident occurring in a very short time, and reduce the possibility of high-voltage circuit fire due to short circuit when the emergency collision event affects the power battery compartment or the high-voltage compartment, thereby improving the safety of people in the vehicle.

[0004] In order to solve the above technical problems, the first aspect of the present invention discloses a vehicle collision protection method, which is applied to achieve collision protection for a target vehicle equipped with a vehicle controller, and comprises:

[0005] When a collision occurs with the target vehicle, the vehicle controller receives a collision signal sent by a collision sensor of the target vehicle, wherein the collision sensor is mounted at a preset position of the target vehicle, the preset position including a position corresponding to a collision protection portion of the target vehicle, and the collision protection portion including a power battery compartment and / or a high-voltage compartment of the target vehicle;

[0006] The vehicle controller determines whether the collision effect satisfies a preset circuit protection condition according to the collision signal;

[0007] When it is determined that the collision effect satisfies the circuit protection condition, the vehicle controller cuts off the high-voltage circuit of the target vehicle.

[0008] As an optional embodiment, in the first aspect of the present invention, the vehicle controller cuts off the high-voltage circuit of the target vehicle, including:

[0009] The vehicle controller cuts off the switch control power supply of the first switch component in the high-voltage circuit of the target vehicle, so that the switch contact of the first switch component is disconnected;

[0010] After the vehicle controller cuts off the high-voltage circuit of the target vehicle, the method further includes:

[0011] The vehicle controller detects whether the high-voltage circuit has been successfully disconnected;

[0012] When it is detected that the high-voltage circuit is not successfully disconnected, the vehicle controller determines that the first switch component has a fault and the fault of the first switch component is a preset fault, wherein the preset fault includes a switch sticking fault;

[0013] The vehicle controller generates a fault record of the first switch component according to the preset fault, and the fault record is used to provide maintenance instructions corresponding to the first switch component.

[0014] As an optional embodiment, in the first aspect of the present invention, before the vehicle controller cuts off the high-voltage circuit of the target vehicle, the method further includes:

[0015] The vehicle controller detects whether the high-voltage circuit of the target vehicle is in a preset state. When the vehicle controller detects that the high-voltage circuit is in the preset state, the vehicle controller triggers the operation of cutting off the high-voltage circuit of the target vehicle, wherein the preset state includes a power-on state.

[0016] When it is detected that the high-voltage circuit is not in the preset state, the vehicle controller sends a closing limit signal to the high-voltage circuit to keep the switch contact of the first switch component in the high-voltage circuit open.

[0017] As an optional embodiment, in the first aspect of the present invention, the vehicle controller determines, based on the collision signal, whether the collision effect satisfies a preset circuit protection condition, including:

[0018] The vehicle controller determines a collision parameter of the collision action according to the collision signal, wherein the collision parameter includes one or more sub-collision parameters, wherein all the sub-collision parameters include one or more of a collision duration of the collision action, a collision intensity of the collision action, and a vehicle deceleration corresponding to the collision action;

[0019] The vehicle controller compares the collision parameter with a preset collision parameter threshold to obtain a comparison result;

[0020] The vehicle controller determines whether the collision effect meets a preset circuit protection condition based on the comparison result.

[0021] As an optional embodiment, in the first aspect of the present invention, before the vehicle controller compares the collision parameter with a preset collision parameter threshold and obtains a comparison result, the method further includes:

[0022] The vehicle controller determines the collision position of the collision according to the installation position of the collision sensor;

[0023] The vehicle controller determines the direction of the collision according to the collision location and the predetermined forward direction of the target vehicle;

[0024] The vehicle controller updates the collision parameter according to the action direction, and triggers the operation of comparing the collision parameter with a preset collision parameter threshold to obtain a comparison result;

[0025] And, the method further comprises:

[0026] The vehicle controller determines a collision parameter threshold value that matches the collision parameter according to the collision position and / or action direction.

[0027] As an optional embodiment, in the first aspect of the present invention, the vehicle controller determines the collision parameters of the collision action according to the collision signal, including:

[0028] The vehicle controller determines the collision duration of the collision according to a signal band in which the corresponding signal value of the collision signal is greater than a preset signal value; and / or,

[0029] The vehicle controller determines the collision intensity of the collision according to the collision signal and a predetermined intensity correlation relationship corresponding to the collision signal; and / or,

[0030] The vehicle controller determines the vehicle deceleration corresponding to the collision effect based on the collision signal and the vehicle speed information of the target vehicle collected in advance.

[0031] As an optional implementation, in the first aspect of the present invention, the collision parameter threshold includes a sub-collision parameter threshold corresponding to each of the sub-collision parameters;

[0032] The vehicle controller determines, based on the comparison result, whether the collision effect satisfies a preset circuit protection condition, including:

[0033] When the comparison result indicates that each of the sub-collision parameters is a first-category sub-collision parameter, the vehicle controller determines that the collision effect satisfies a preset circuit protection condition; or

[0034] When the comparison result indicates that the specific sub-collision parameter is a first-category sub-collision parameter, the vehicle controller determines that the collision effect satisfies a preset circuit protection condition; or

[0035] When the comparison result indicates that at least a first preset number of first-category sub-collision parameters exist in all the sub-collision parameters, the vehicle controller determines that the collision effect satisfies a preset circuit protection condition; or

[0036] When the comparison result indicates that at least a second preset number of first-category sub-collision parameters exist among all the sub-collision parameters and at least a third preset number of second-category sub-collision parameters exist, the vehicle controller determines that the collision action satisfies a preset circuit protection condition;

[0037] The first-type sub-collision parameter is greater than or equal to its corresponding sub-collision parameter threshold, and the second-type sub-collision parameter is less than its corresponding sub-collision parameter threshold and a ratio thereof satisfies a preset proportional component.

[0038] As an optional embodiment, in the first aspect of the present invention, the method further comprises:

[0039] When it is determined that the collision does not satisfy the circuit protection condition, the vehicle controller receives an environmental sensor signal sent by an environmental sensor of the target vehicle, wherein the environmental sensor is installed at the preset position;

[0040] The vehicle controller determines, based on the environmental sensor signal, whether the preset position satisfies a safety maintenance condition within a preset observation time after the collision occurs;

[0041] When it is determined that the preset position does not meet the safety maintenance condition, the vehicle controller triggers the operation of cutting off the high-voltage circuit of the target vehicle.

[0042] As an optional embodiment, in the first aspect of the present invention, the method further comprises:

[0043] The vehicle controller determines whether a real-time distance between the target vehicle and the surrounding obstacles of the target vehicle is less than a first preset distance based on a radar detection signal sent by the radar system of the target vehicle;

[0044] When it is determined that the real-time distance is less than the first preset distance, the vehicle controller triggers the operation of receiving the collision signal sent by the collision sensor of the target vehicle, or the vehicle controller triggers the operation of determining whether the collision effect meets the preset circuit protection condition based on the collision signal.

[0045] A second aspect of the present invention discloses a vehicle collision protection device, which is used to provide collision protection for a target vehicle. The device comprises:

[0046] a transmission module, configured to receive a collision signal transmitted by a collision sensor of the target vehicle when a collision occurs to the target vehicle, wherein the collision sensor is mounted at a preset position of the target vehicle, the preset position including a position corresponding to a collision protection portion of the target vehicle, the collision protection portion including a power battery compartment and / or a high-voltage compartment of the target vehicle;

[0047] a judgment module, configured to judge whether the collision effect satisfies a preset circuit protection condition according to the collision signal;

[0048] A circuit control module is used to cut off the high-voltage circuit of the target vehicle when the judgment module determines that the collision effect meets the circuit protection condition.

[0049] As an optional implementation, in the second aspect of the present invention, the specific manner in which the circuit control module cuts off the high-voltage circuit of the target vehicle includes:

[0050] Cutting off the switch control power supply of the first switch component in the high-voltage circuit of the target vehicle so that the switch contact of the first switch component is disconnected;

[0051] And, the device further comprises:

[0052] a detection module, configured to detect whether the high-voltage circuit has been successfully disconnected after the circuit control module disconnects the high-voltage circuit of the target vehicle;

[0053] a determination module, configured to, when the detection module detects that the high-voltage circuit is not successfully disconnected, determine that the first switch component has a fault and the fault of the first switch component is a preset fault, wherein the preset fault includes a switch sticking fault;

[0054] A generating module is used to generate a fault record of the first switch component according to the preset fault, and the fault record is used to provide a maintenance guide corresponding to the first switch component.

[0055] As an optional embodiment, in the second aspect of the present invention, the detection module is further configured to detect whether the high-voltage circuit of the target vehicle is in a preset state before the circuit control module cuts off the high-voltage circuit of the target vehicle, and trigger the circuit control module to execute the operation of cutting off the high-voltage circuit of the target vehicle when it is detected that the high-voltage circuit is in the preset state, wherein the preset state includes a power-on state;

[0056] The circuit control module is further configured to send a closing limit signal to the high-voltage circuit when the detection module detects that the high-voltage circuit is not in the preset state, so as to keep the switch contacts of the first switch component in the high-voltage circuit open.

[0057] As an optional implementation, in the second aspect of the present invention, the specific manner in which the judgment module judges whether the collision effect satisfies a preset circuit protection condition based on the collision signal includes:

[0058] determining a collision parameter of the collision effect according to the collision signal, wherein the collision parameter includes one or more sub-collision parameters, wherein all the sub-collision parameters include one or more of a collision duration of the collision effect, a collision intensity of the collision effect, and a vehicle deceleration corresponding to the collision effect;

[0059] Comparing the collision parameter with a preset collision parameter threshold to obtain a comparison result;

[0060] According to the comparison result, it is determined whether the collision effect satisfies a preset circuit protection condition.

[0061] As an optional embodiment, in the second aspect of the present invention, the judgment module is further configured to, before performing the operation of comparing the collision parameters with a preset collision parameter threshold value to obtain a comparison result, determine a collision location of the collision action based on an installation position of the collision sensor; determine an action direction of the collision action based on the collision location and a predetermined forward direction of the target vehicle; update the collision parameters based on the action direction, and trigger the operation of comparing the collision parameters with the preset collision parameter threshold value to obtain a comparison result;

[0062] Furthermore, the judgment module is further configured to determine a collision parameter threshold that matches the collision parameter according to the collision location and / or action direction.

[0063] As an optional implementation, in the second aspect of the present invention, the specific manner in which the judgment module determines the collision parameters of the collision action according to the collision signal includes:

[0064] determining the collision duration of the collision effect according to a signal band in which the corresponding signal value of the collision signal is greater than a preset signal value; and / or,

[0065] determining the collision intensity of the collision effect according to the collision signal and a predetermined intensity correlation relationship corresponding to the collision signal; and / or,

[0066] The vehicle deceleration corresponding to the collision effect is determined based on the collision signal and pre-collected vehicle speed information of the target vehicle.

[0067] As an optional implementation, in the second aspect of the present invention, the collision parameter threshold includes a sub-collision parameter threshold corresponding to each of the sub-collision parameters;

[0068] The specific manner in which the judgment module judges whether the collision effect satisfies a preset circuit protection condition based on the comparison result includes:

[0069] When the comparison result indicates that each of the sub-collision parameters is a first-category sub-collision parameter, it is determined that the collision effect satisfies a preset circuit protection condition; or,

[0070] When the comparison result indicates that the specific sub-collision parameter is a first-category sub-collision parameter, it is determined that the collision effect satisfies a preset circuit protection condition; or,

[0071] When the comparison result indicates that at least a first preset number of first-category sub-collision parameters exist in all the sub-collision parameters, it is determined that the collision effect satisfies a preset circuit protection condition; or,

[0072] When the comparison result indicates that at least a second preset number of first-category sub-collision parameters exist among all the sub-collision parameters and at least a third preset number of second-category sub-collision parameters exist, determining that the collision action satisfies a preset circuit protection condition;

[0073] The first-type sub-collision parameter is greater than or equal to its corresponding sub-collision parameter threshold, and the second-type sub-collision parameter is less than its corresponding sub-collision parameter threshold and a ratio thereof satisfies a preset proportional component.

[0074] As an optional embodiment, in the second aspect of the present invention, the transmission module is further configured to receive an environmental sensor signal sent by an environmental sensor of the target vehicle when the judgment module determines that the collision effect does not satisfy the circuit protection condition, wherein the environmental sensor is installed at the preset position;

[0075] The judgment module is also used to judge whether the preset position meets the safety maintenance condition within the preset observation time after the collision occurs based on the environmental sensor signal; when it is judged that the preset position does not meet the safety maintenance condition, trigger the circuit control module to execute the operation of cutting off the high-voltage circuit of the target vehicle.

[0076] As an optional embodiment, in the second aspect of the present invention, the judgment module is also used to judge whether the real-time distance between the surrounding obstacles of the target vehicle and the target vehicle is less than a first preset distance based on the radar detection signal sent by the radar system of the target vehicle; when it is judged that the real-time distance is less than the first preset distance, the transmission module is triggered to execute the operation of receiving the collision signal sent by the collision sensor of the target vehicle, or, the operation of judging whether the collision effect meets the preset loop protection condition based on the collision signal is triggered.

[0077] A third aspect of the present invention discloses another vehicle collision protection device, comprising:

[0078] a memory storing executable program code;

[0079] a processor coupled to the memory;

[0080] The processor calls the executable program code stored in the memory to execute the vehicle collision protection method disclosed in the first aspect of the present invention.

[0081] A fourth aspect of the present invention discloses a computer storage medium, wherein the computer storage medium stores computer instructions. When the computer instructions are called, they are used to execute the vehicle collision protection method disclosed in the first aspect of the present invention.

[0082] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0083] In an embodiment of the present invention, a vehicle collision protection method is used to implement collision protection for a target vehicle, wherein the target vehicle is equipped with a vehicle controller. When a collision occurs with the target vehicle, the vehicle controller receives a collision signal transmitted by a collision sensor of the target vehicle, wherein the collision sensor is mounted at a preset position of the target vehicle, the preset position including a position corresponding to a collision protection portion of the target vehicle, which may include a power battery compartment and / or a high-voltage compartment of the target vehicle; the vehicle controller determines whether the collision satisfies a preset circuit protection condition based on the collision signal; and when it is determined that the collision satisfies the circuit protection condition, the vehicle controller disconnects the high-voltage circuit of the target vehicle. It can be seen that the implementation of the present invention can automatically disconnect the vehicle's high-voltage circuit through the vehicle controller when detecting that the collision signal of the vehicle's power battery compartment or high-voltage compartment satisfies the preset circuit protection condition, thereby reducing the possibility of the driver being unable to respond to the warning in a timely manner due to an emergency collision accident occurring in a very short time, and reducing the possibility of the high-voltage circuit igniting due to a short circuit when the emergency collision event affects the power battery compartment or the high-voltage compartment, thereby improving the safety of people in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0085] Figure 1 This is a flow chart of a vehicle collision protection method disclosed in an embodiment of the present invention;

[0086] Figure 2 This is a flow chart of another vehicle collision protection method disclosed in an embodiment of the present invention;

[0087] Figure 3 This is a schematic structural diagram of a vehicle collision protection device disclosed in an embodiment of the present invention;

[0088] Figure 4 1 is a schematic structural diagram of another vehicle collision protection device disclosed in an embodiment of the present invention;

[0089] Figure 5 is a schematic structural diagram of a target vehicle disclosed in an embodiment of the present invention;

[0090] Figure 6 This is a structural schematic diagram of another vehicle collision protection device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0091] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0092] The terms "first," "second," and so on, in the description and claims of the present invention and the accompanying drawings are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or end comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed therein, or may optionally include other steps or elements inherent to such process, method, product, or end.

[0093] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0094] The present invention discloses a vehicle collision protection method, device, and computer storage medium. These methods, when detecting collision signals from the vehicle's power battery compartment and high-voltage compartment that meet preset circuit protection conditions, automatically disconnect the vehicle's high-voltage circuit via a vehicle controller. This reduces the likelihood of drivers being unable to respond to early warnings due to extremely short-term emergency collisions. Furthermore, when an emergency collision affects the power battery compartment or high-voltage compartment, the possibility of a high-voltage circuit fire due to a short circuit is reduced, thereby improving the safety of vehicle occupants. These are described in detail below.

[0095] Example 1

[0096] See also Figure 1 , Figure 1 This is a flow chart of a vehicle collision protection method disclosed in an embodiment of the present invention. Figure 1 The vehicle collision protection method described can be applied to implement collision protection for a vehicle equipped with a vehicle controller. Figure 1 As shown, the vehicle collision protection method may include the following operations:

[0097] 101. When a collision occurs with a target vehicle, the vehicle controller receives a collision signal sent by a collision sensor of the target vehicle.

[0098] In an embodiment of the present invention, optionally, the collision sensor is connected to the vehicle controller, and the vehicle controller is connected to the high-voltage circuit. Specifically, the collision sensor is connected to the pin of the vehicle controller through wiring, and the vehicle controller is connected to the first switch component of the high-voltage circuit and can control the on and off of the first switch component.

[0099] In an embodiment of the present invention, optionally, a collision sensor is mounted at a preset position of the target vehicle. The preset position may include a position corresponding to a collision protection portion of the target vehicle. The collision protection portion may include a power battery compartment and / or a high-voltage compartment of the target vehicle. The target vehicle may include, but is not limited to, a new energy vehicle, a hybrid vehicle, a traditional gasoline vehicle, etc., so that the power battery compartment and the high-voltage compartment of the target vehicle can be protected. Further optionally, according to the different protection requirements of the target vehicle, the collision sensor can also be installed around the target vehicle, for example, on the inner side of the front fenders on both sides of the target vehicle's body, the center position of the front of the target vehicle's body, and the center position of the rear of the target vehicle's body, so that collision situations in different directions around the target vehicle can be detected respectively; the collision sensor can also be installed in other compartments where the internal components of the target vehicle are located, for example, the engine compartment, the gasoline tank (if it is a hybrid vehicle), the compartment where the ignition system is located, etc.

[0100] In an embodiment of the present invention, the collision sensor may optionally be an electronic collision sensor, wherein the electronic collision sensor may change its resistance value by deformation of a strain resistor or change its output voltage by applying force to a piezoelectric crystal when subjected to a collision, thereby collecting a correspondingly changing collision signal. Further optionally, the collision sensor can adopt a collision travel switch with gears, and the initial state angle between the collision travel switch and the cabin door of the collision protection part can be preset. When the collision occurs, the change in the angle between the collision travel switch and the cabin door of the collision protection part corresponds to the collision severity of the collision, that is, different angle ranges correspond to different collision intensities. For example, the initial state angle can be set to 61°~65°, that is, an assembly error of about 5° is reserved, and the 0°~15° angle range is set as the 4th gear collision signal, the 16°~30° angle range is set as the 3rd gear collision signal, the 31°~45° angle range is set as the 2nd gear collision signal, and the 46°~60° angle range is set as the 1st gear collision signal. Each gear signal is directly connected to the corresponding 4 pins in the vehicle controller through wiring. The actual initial angle design of the collision travel switch and the cabin door, and the design of the relationship between different gears and angles can be flexibly adjusted according to the actual vehicle layout and vehicle control strategy. Here is just an example.

[0101] In an embodiment of the present invention, after the target vehicle is started, a collision sensor installed at a preset position may optionally collect collision signals at all times, or may be activated by a corresponding switch at the moment a collision occurs to collect collision signals, which is not limited in the embodiment of the present invention. If the collision sensor installed at the preset position is activated by a corresponding switch, a secondary collision sensor may be installed at a location relative to the periphery of the collision sensor to monitor whether a collision has occurred, for example, outside the power battery compartment or high-voltage compartment. This secondary collision sensor may be an electronic collision sensor, an electromechanical collision sensor, or a mercury switch collision sensor. Electromechanical collision sensors utilize mechanical motion to open and close electrical contacts to control the on / off switching of the collision sensor. Examples of such sensors include rolling ball, roller, and eccentric hammer types. Mercury switch collision sensors utilize the conductive properties of mercury to control the on / off switching of the collision sensor.

[0102] In an embodiment of the present invention, optionally, the collision sensor can transmit the collision signal to the vehicle controller only when the collision signal is abnormal, which requires the collision sensor to have a preliminary logical judgment function; or all collision signals to be collected after startup can be transmitted to the vehicle controller, and the vehicle controller determines whether the collision signal is abnormal.

[0103] 102. The vehicle controller determines whether the collision effect meets the preset circuit protection conditions based on the collision signal.

[0104] As an optional implementation, the vehicle controller determines whether the collision effect meets the preset circuit protection conditions based on the collision signal, which may include:

[0105] The vehicle controller determines a collision parameter of the collision action according to the collision signal, wherein the collision parameter includes one or more sub-collision parameters, wherein all sub-collision parameters may include one or more of a collision duration of the collision action, a collision intensity of the collision action, and a vehicle deceleration corresponding to the collision action;

[0106] The vehicle controller compares the collision parameters with the preset collision parameter thresholds to obtain a comparison result;

[0107] Based on the comparison results, the vehicle controller determines whether the collision effect meets the preset circuit protection conditions.

[0108] Optionally, the collision parameter threshold may include a sub-collision parameter threshold corresponding to each sub-collision parameter, for example,

[0109] It can be seen that the implementation of this optional implementation method can determine that the high-voltage circuit needs to be cut off when the collision parameters detected in the high-voltage compartment and the power battery compartment exceed the preset threshold value, thereby improving the accuracy and reliability of judging whether the collision effect meets the circuit protection conditions, and reducing the occurrence of high-voltage circuit short circuit and fire due to excessive collision duration and collision force.

[0110] In this optional embodiment, the vehicle controller may optionally determine the collision parameters of the collision action according to the collision signal, which may include:

[0111] The vehicle controller determines the collision duration of the collision according to a signal band in the collision signal whose corresponding signal value is greater than a preset signal value; and / or,

[0112] The vehicle controller determines the collision intensity of the collision according to the collision signal and a predetermined intensity correlation relationship corresponding to the collision signal; and / or,

[0113] The vehicle controller determines the vehicle deceleration corresponding to the collision effect based on the collision signal and the vehicle speed information of the target vehicle collected in advance.

[0114] Taking the above-mentioned collision travel switch as an example, since the collision signal sent by the collision travel switch to the vehicle controller is a collision signal based on the gear position, the collision intensity of the collision effect can be determined according to the gear position of the collision signal. For example, the 1st and 2nd gear collision signals correspond to mild collision intensity, and the 3rd and 4th gear collision signals correspond to severe collision intensity; when the vehicle controller receives the 1st or 2nd gear collision signal, it can be determined that the collision intensity of the collision effect is mild collision intensity, and when the vehicle controller receives the 3rd or 4th gear collision signal, it can be determined that the collision intensity of the collision effect is severe collision intensity.

[0115] In this optional embodiment, optionally, the vehicle speed information of the target vehicle may include the actual driving speed of the target vehicle during the collision duration of the collision effect, so that the speed change of the target vehicle can be determined by the actual driving speed of the target vehicle, and then the total vehicle deceleration of the target vehicle can be determined; further optionally, the vehicle speed information may also include a preset driving speed of the target vehicle during the collision duration of the collision effect, so that the vehicle deceleration caused by the collision effect and the vehicle deceleration caused by the driver's operation in the total vehicle deceleration can be distinguished, thereby obtaining a more accurate vehicle deceleration corresponding to the collision effect.

[0116] In this optional embodiment, the vehicle controller may also determine the vehicle deceleration corresponding to the collision effect directly based on the collision information and a pre-set deceleration correlation relationship corresponding to the collision signal.

[0117] It can be seen that the implementation of this optional embodiment can also determine the collision duration, collision intensity and vehicle deceleration of the collision effect based on the signal band that meets the conditions in the collision signal, the corresponding intensity correlation relationship and the vehicle speed information of the target vehicle, thereby improving the accuracy and reliability of determining the collision parameters.

[0118] In this optional embodiment, the vehicle controller may optionally determine whether the collision effect satisfies a preset circuit protection condition based on the comparison result, which may include:

[0119] When the comparison result indicates that each sub-collision parameter is a first-category sub-collision parameter, the vehicle controller determines that the collision effect satisfies the preset circuit protection condition; or,

[0120] When the comparison result indicates that the specific sub-collision parameter is a first-category sub-collision parameter, the vehicle controller determines that the collision effect satisfies the preset circuit protection condition; or,

[0121] When the comparison result indicates that there are at least a first preset number of first-category sub-collision parameters among all sub-collision parameters, the vehicle controller determines that the collision effect satisfies a preset circuit protection condition; or

[0122] When the comparison result indicates that at least a second preset number of first-category sub-collision parameters exist among all sub-collision parameters and at least a third preset number of second-category sub-collision parameters exist, the vehicle controller determines that the collision action satisfies a preset circuit protection condition;

[0123] The first type of sub-collision parameter is greater than or equal to its corresponding sub-collision parameter threshold, and the second type of sub-collision parameter is less than its corresponding sub-collision parameter threshold and the ratio between the second type of sub-collision parameter and its corresponding sub-collision parameter threshold satisfies a preset proportional component.

[0124] In this optional embodiment, optionally, the second preset number is smaller than the first preset number, and the third preset number can be a preset fixed number or a preset variable number. The more sub-collision parameters that are greater than the corresponding sub-collision parameter threshold, the smaller the third preset number.

[0125] Taking the above-mentioned collision travel switch as an example, the collision parameters only include the collision intensity, and the collision intensity threshold can be set to severe collision intensity. When the vehicle controller receives a 1st or 2nd gear collision signal, the collision intensity is a mild collision intensity, which is less than the collision intensity threshold, and the collision effect does not meet the circuit protection conditions. When the vehicle controller receives a 3rd or 4th gear collision signal, the collision intensity is a severe collision intensity, which is greater than or equal to the collision intensity threshold, and the collision effect meets the circuit protection conditions.

[0126] It can be seen that the implementation of this optional implementation method can also preset corresponding circuit protection conditions according to different needs, thereby improving the diversity of circuit protection conditions, and further improving the flexibility and diversity of determining the timing of cutting off the high-voltage circuit, meeting the diverse needs of different drivers and vehicle types.

[0127] 103. When it is determined that the collision effect meets the circuit protection conditions, the vehicle controller cuts off the high-voltage circuit of the target vehicle.

[0128] As an optional implementation, the vehicle controller cutting off the high-voltage circuit of the target vehicle may include:

[0129] The vehicle controller cuts off the switch control power supply of the first switch component in the high-voltage circuit of the target vehicle, so that the switch contact of the first switch component is disconnected.

[0130] In this optional embodiment, optionally, the first switch component may be a relay, and the switch control power supply of the second switch component includes at least a low-voltage power supply of the relay.

[0131] It can be seen that implementing this optional embodiment controls the disconnection of the entire high-voltage circuit by cutting off the switch control power supply of the first switch component of the high-voltage circuit, thereby improving the accuracy and reliability of the on-off control of the high-voltage circuit.

[0132] It can be seen that the implementation of the embodiment of the present invention can automatically cut off the vehicle's high-voltage circuit through the vehicle controller when it is detected that the collision signals of the vehicle's power battery compartment and high-voltage compartment meet the preset circuit protection conditions, thereby reducing the situation where the driver is unable to respond to the warning in time due to an emergency collision accident occurring in a very short time, and reducing the possibility of the high-voltage circuit catching fire due to a short circuit when the emergency collision event affects the power battery compartment or the high-voltage compartment, thereby improving the safety of people in the vehicle.

[0133] In an optional embodiment, the method may further include:

[0134] When it is determined that the collision effect does not meet the circuit protection conditions, the vehicle controller sends a first-class collision warning to the notification device of the target vehicle, so that the notification device notifies the occupants of the target vehicle of the first-class collision warning through a preset warning method, wherein the first-class collision warning can be a mild collision warning.

[0135] Optionally, the preset warning method may include: one or more of: sound warning method, light warning method, text warning method, and picture warning method, and the notification device may include a multimedia device on the target vehicle, such as: instrument panel, display, speaker, etc.

[0136] It can be seen that the implementation of this optional embodiment can promptly remind the driver when a minor collision occurs in the vehicle, so as to prevent the collision accident from becoming more serious.

[0137] In an optional embodiment, after the vehicle controller cuts off the high-voltage circuit of the target vehicle, the method may further include:

[0138] The vehicle controller detects whether the high-voltage circuit has been successfully disconnected;

[0139] When it is detected that the high-voltage circuit is not successfully disconnected, the vehicle controller determines that the first switch component has a fault and the fault of the first switch component is a preset fault, wherein the preset fault may include a switch sticking fault;

[0140] The vehicle controller generates a fault record of the first switch component according to the preset fault. Optionally, the fault record can be used to provide maintenance instructions corresponding to the first switch component.

[0141] It can be seen that the implementation of this optional embodiment can detect whether the high-voltage circuit is successfully disconnected after the event, reduce the occurrence of situations where the high-voltage circuit cannot be disconnected due to adhesion failure of the first switch component, and facilitate timely maintenance of the first switch component, reducing the occurrence of subsequent failures of the first switch component.

[0142] In this optional embodiment, as an optional implementation manner, the method may further include:

[0143] When it is detected that the high-voltage circuit is not successfully disconnected, the vehicle controller cuts off the switch control power supply of the second switch component in the high-voltage circuit to disconnect the switch contact of the second switch component.

[0144] In this optional embodiment, optionally, the second switch component may be a relay, and the switching control power supply of the second switch component includes at least a low-voltage power supply of the relay.

[0145] It can be seen that implementing this optional implementation scheme can cut off the low-voltage power supply of the second switch component when an adhesion fault occurs in the first switch component, thereby increasing the possibility of successfully cutting off the high-voltage circuit and thereby improving the safety of people in the vehicle.

[0146] In this optional embodiment, as another optional implementation, the method may further include:

[0147] When it is detected that the preset fault has been handled, the vehicle controller deletes the fault record of the first switch component, or changes the handling status of the fault record to handled, or adds a handled status flag to the fault record. This facilitates monitoring of the repair status of the fault of the first switch component.

[0148] In this optional embodiment, as another optional implementation manner, the method may further include:

[0149] When it is detected that the high-voltage circuit has been successfully disconnected, the vehicle controller sends a second-type collision warning to the notification device of the target vehicle, so that the notification device notifies the occupants of the target vehicle of the second-type collision warning through a preset warning method, wherein the second-type collision warning can be a severe collision warning.

[0150] It can be seen that this can also remind the people on the car that a serious collision has occurred after the high-voltage circuit is cut off, so that the people on the car can leave the accident vehicle in time.

[0151] In another optional embodiment, before the vehicle controller cuts off the high-voltage circuit of the target vehicle, the method may further include:

[0152] The vehicle controller detects whether the high-voltage circuit of the target vehicle is in a preset state. When the high-voltage circuit is detected to be in the preset state, the vehicle controller triggers the above-mentioned operation of cutting off the high-voltage circuit of the target vehicle. The preset state may include a power-on state;

[0153] When it is detected that the high-voltage circuit is not in a preset state, the vehicle controller sends a closing limit signal to the high-voltage circuit to keep the switch contact of the first switch component in the high-voltage circuit open.

[0154] It can be seen that the implementation of this optional embodiment can actively cut off the circuit only when the high-voltage circuit is in the power-on state, which can reduce unnecessary circuit cutting operations, and keep the high-voltage circuit disconnected when the high-voltage circuit is not in the power-on state, thereby reducing the occurrence of high-voltage circuit fire caused by closure of the high-voltage circuit due to faults or user misoperation after a collision.

[0155] In this optional embodiment, optionally, after the vehicle controller sends a closing limit signal to the high-voltage circuit to keep the switch contacts of the first switch component in the high-voltage circuit open, the method may further include: when it is detected that the human fault caused by the closing limit signal for keeping the high-voltage circuit open has been processed, the vehicle controller releases the effect of the closing limit signal.

[0156] In yet another optional embodiment, before the vehicle controller compares the collision parameter with a preset collision parameter threshold to obtain a comparison result, the method may further include:

[0157] The vehicle controller determines the collision site according to the installation position of the collision sensor;

[0158] The vehicle controller determines the direction of the collision based on the collision location and the predetermined forward direction of the target vehicle;

[0159] The vehicle controller updates the collision parameters according to the direction of action, and triggers the above-mentioned operation of comparing the collision parameters with the preset collision parameter threshold to obtain the comparison result;

[0160] And, the method may further include:

[0161] The vehicle controller determines a collision parameter threshold that matches the collision parameters based on the collision location and / or action direction.

[0162] It can be seen that the implementation of this optional embodiment can determine the direction of the collision according to the collision site and the forward direction of the vehicle and correct the collision parameters based on this, so as to obtain collision parameters that match the direction of action, thereby minimizing the influence of unnecessary factors on the collision parameters and improving the accuracy and reliability of the collision parameters. In addition, the collision parameter threshold can be preset according to the collision site and the direction of action, thereby improving the flexibility and diversity of determining the timing of cutting off the high-voltage circuit for different collision sites and directions of action.

[0163] In this optional embodiment, as an optional implementation manner, the vehicle controller updates the collision parameters according to the action direction, which may include:

[0164] The vehicle controller determines the default direction of action used when determining collision parameters;

[0165] The vehicle controller determines the deviation angle between the action direction and the default action direction;

[0166] The vehicle controller updates the collision parameters based on the deviation angle;

[0167] Optionally, the vehicle controller updates the collision parameters according to the deviation angle, which may include:

[0168] The vehicle controller determines the collision intensity of the collision action along the action direction according to the deviation angle and the collision intensity as the updated collision intensity; and / or,

[0169] The vehicle controller determines the vehicle deceleration corresponding to the collision action along the direction of action based on the deviation angle and the vehicle deceleration.

[0170] It can be seen that implementing this optional implementation scheme can correct the collision intensity and vehicle deceleration according to the deviation angle between the default action direction and the actual action direction, thereby improving the accuracy and reliability of the collision intensity and vehicle deceleration.

[0171] In yet another optional embodiment, the method may further include:

[0172] When it is determined that the collision does not meet the circuit protection conditions, the vehicle controller records the collision information of the collision based on the collision signal and / or collision parameters, wherein the collision information can be used to trace the collision.

[0173] The vehicle controller eliminates the fault warning corresponding to the collision effect.

[0174] It can be seen that the implementation of this optional embodiment can also record only the collision information when the collision effect does not meet the circuit protection conditions, eliminate the corresponding warning, reduce unnecessary warnings, and improve the accuracy and reliability of fault warnings.

[0175] In yet another optional embodiment, the method may further include:

[0176] The vehicle controller determines whether the real-time distance between the target vehicle and the surrounding obstacles of the target vehicle is less than a first preset distance based on the radar detection signal sent by the radar system of the target vehicle;

[0177] When it is determined that the real-time distance is less than the first preset distance, the vehicle controller triggers the execution of the above-mentioned operation of receiving the collision signal sent by the collision sensor of the target vehicle, or the vehicle controller triggers the execution of the above-mentioned operation of judging whether the collision effect meets the preset circuit protection condition based on the collision signal.

[0178] It can be seen that the implementation of this optional embodiment can detect the real-time distance between the surrounding obstacles and the vehicle through the radar system, thereby reducing the probability of the vehicle being hit during driving, and detect whether a collision has occurred and whether the high-voltage circuit needs to be cut off when the distance between the surrounding obstacles and the vehicle is less than a first preset distance. This not only reduces unnecessary detection operations, but also helps to improve the response speed of the vehicle controller to collisions, so that the high-voltage circuit can be cut off in time when the vehicle collides.

[0179] In this optional embodiment, the method may further include:

[0180] When it is determined that the real-time distance is greater than the first preset distance, the vehicle controller determines, based on the radar monitoring signal, whether the real-time distance between the target vehicle and the surrounding obstacles is less than a second preset distance, wherein the first preset distance is less than the second preset distance;

[0181] When it is determined that the real-time distance is less than the second preset distance, the vehicle controller sends a third-category collision warning to the notification device of the target vehicle, so that the notification device notifies the occupants of the target vehicle of the third-category collision warning through a preset warning method, wherein the third-category collision warning can be an anti-collision warning.

[0182] It can be seen that the implementation of this optional embodiment can promptly notify the driver when an obstacle is relatively close to the vehicle, reducing the risk of vehicle collision, and detect whether it is necessary to cut off the high-voltage circuit when the obstacle is particularly close, thereby achieving different handling methods for different obstacle distances, and improving vehicle driving safety through multiple safeguards.

[0183] Example 2

[0184] See also Figure 2 , Figure 2 This is a flow chart of another vehicle collision protection method disclosed in an embodiment of the present invention. Figure 2 The vehicle collision protection method described can be applied to implement collision protection for a vehicle equipped with a vehicle controller. Figure 2 As shown, the vehicle collision protection method may include the following operations:

[0185] 201. When a target vehicle collides with the target vehicle, the vehicle controller receives a collision signal sent by a collision sensor of the target vehicle.

[0186] 202. The vehicle controller determines whether the collision effect meets the preset circuit protection conditions based on the collision signal.

[0187] 203. When it is determined that the collision effect meets the circuit protection conditions, the vehicle controller cuts off the high-voltage circuit of the target vehicle.

[0188] 204. When it is determined that the collision effect does not meet the circuit protection condition, the vehicle controller receives an environmental sensing signal sent by the environmental sensor of the target vehicle.

[0189] Optionally, the environmental sensor is installed at the above-mentioned preset position, that is, the above-mentioned high-voltage compartment position and / or power battery compartment position; further optionally, according to the different protection requirements of the target vehicle, the environmental sensor can also be installed around the target vehicle, for example, the inner side of the front fender on both sides of the target vehicle's body, the central position of the front body and the central position of the rear body of the target vehicle, so that the environmental parameters at different directions around the target vehicle can be detected respectively; the environmental sensor can also be installed in other compartments where the internal components of the target vehicle are located, for example, next to the high-voltage circuit, the engine compartment, the fuel tank (if it is a hybrid power), the compartment where the ignition system is located, etc.

[0190] Optionally, the environmental sensor may include one or more of a temperature sensor, a photometric sensor, a sound sensor, a humidity sensor, etc., so that a fire situation that may occur inside the target vehicle can be detected by detecting the environmental parameters inside the target vehicle.

[0191] 205. The vehicle controller determines whether the preset position meets the safety maintenance conditions within the preset observation time after the collision occurs based on the environmental sensor signal.

[0192] As an optional implementation, the vehicle controller determines, based on the environmental sensor signal, whether the preset position satisfies the safety maintenance condition within a preset observation time after the collision occurs, which may include:

[0193] The vehicle controller determines, based on the environmental sensor signal, environmental parameters at a preset location within a preset observation time after a collision occurs. Optionally, the environmental parameters may include a sub-environmental parameter combination, which may include one or more of an environmental sound parameter, an environmental light parameter, an environmental temperature parameter, an environmental humidity parameter, etc. within the preset observation time.

[0194] The vehicle controller compares the environmental parameters with the preset environmental parameter thresholds to obtain observation comparison results;

[0195] Based on the observation comparison results, the vehicle controller determines whether the preset position meets the safety maintenance conditions within the preset observation time after the collision occurs.

[0196] Optionally, the environmental parameter threshold may include a sub-environment parameter threshold corresponding to each sub-environment parameter.

[0197] It can be seen that the implementation of this optional implementation method can determine that the high-voltage circuit needs to be cut off when the environmental parameters detected in the high-voltage compartment and the power battery compartment exceed the preset threshold value, thereby improving the accuracy and reliability of judging whether the preset position meets the safety maintenance conditions, and reducing the occurrence of the expansion of dangerous situations due to failure to cut off the high-voltage circuit in time after fire and explosion.

[0198] 206. When it is determined that the preset position does not meet the safety maintenance condition, the vehicle controller triggers the above-mentioned operation of cutting off the high-voltage circuit of the target vehicle.

[0199] In the embodiment of the present invention, for other descriptions of steps 201 to 203, please refer to the detailed description of steps 101 to 102 in the first embodiment, which will not be repeated in the embodiment of the present invention.

[0200] It can be seen that when the embodiment of the present invention detects that the collision signal of the vehicle's power battery compartment and high-voltage compartment meets the preset circuit protection condition, the vehicle's high-voltage circuit is automatically cut off through the vehicle controller, thereby reducing the situation where the driver is unable to respond to the warning in time due to the occurrence of an emergency collision accident in a very short time, and reducing the possibility of the high-voltage circuit catching fire due to a short circuit when the emergency collision event affects the power battery compartment or the high-voltage compartment, thereby improving the safety of people in the vehicle. In addition, when the collision effect does not meet the circuit inclusion condition, the environmental information of the preset position after the collision effect occurs can be further monitored to determine whether the preset position meets the safety maintenance condition. If not, the high-voltage circuit will continue to be cut off, thereby reducing the situation where the high-voltage circuit is not cut off in time due to the delayed impact of the collision effect, thereby causing the high-voltage circuit to catch fire.

[0201] Example 3

[0202] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of a vehicle collision protection device disclosed in an embodiment of the present invention. Figure 3 The vehicle collision protection device described can be used to implement collision protection for a vehicle. Optionally, if the vehicle is equipped with a vehicle controller, the vehicle collision protection device can be applied to the vehicle controller. Figure 3 As shown, the vehicle collision protection device may include:

[0203] a transmission module 301 for receiving a collision signal transmitted by a collision sensor of the target vehicle when a collision occurs to the target vehicle, wherein the collision sensor is mounted at a preset position of the target vehicle, which may include a position corresponding to a collision protection portion of the target vehicle, which may include a power battery compartment and / or a high-voltage compartment of the target vehicle;

[0204] The judgment module 302 is used to judge whether the collision effect meets the preset circuit protection condition according to the collision signal;

[0205] The circuit control module 303 is configured to cut off the high-voltage circuit of the target vehicle when the judgment module 302 determines that the collision effect satisfies the circuit protection condition.

[0206] It can be seen that implementation Figure 3 The described device can automatically cut off the vehicle's high-voltage circuit through the vehicle controller when it detects that the collision signals of the vehicle's power battery compartment and high-voltage compartment meet the preset circuit protection conditions, thereby reducing the situation where the driver is unable to respond to the warning in time due to an emergency collision accident occurring in a very short time, and reducing the possibility of high-voltage circuit fire due to short circuit when the emergency collision event affects the power battery compartment or high-voltage compartment, thereby improving the safety of people in the vehicle.

[0207] In an optional embodiment, if Figure 4 As shown, the specific method of the circuit control module 303 cutting off the high-voltage circuit of the target vehicle may include:

[0208] Cutting off the switch control power supply of the first switch component in the high-voltage circuit of the target vehicle so that the switch contact of the first switch component is disconnected;

[0209] And, the device may further include:

[0210] A detection module 304 is used to detect whether the high-voltage circuit has been successfully disconnected after the circuit control module 303 disconnects the high-voltage circuit of the target vehicle;

[0211] a determination module 305 configured to, when the detection module 304 detects that the high-voltage circuit is not successfully disconnected, determine that a fault occurs in the first switch component and that the fault of the first switch component is a preset fault, wherein the preset fault may include a switch sticking fault;

[0212] The generating module 306 is configured to generate a fault record of the first switch component according to the preset fault, where the fault record is used to provide a maintenance guide corresponding to the first switch component.

[0213] It can be seen that implementation Figure 4 The described device can control the disconnection of the entire high-voltage circuit by cutting off the switch control power supply of the first switch component of the high-voltage circuit, thereby improving the accuracy and reliability of the on-off control of the high-voltage circuit. In addition, it can also detect whether the high-voltage circuit is successfully disconnected after the event, reducing the occurrence of situations where the high-voltage circuit cannot be disconnected due to adhesion failure of the first switch component, and is conducive to timely maintenance of the first switch component, reducing the occurrence of subsequent failures of the first switch component.

[0214] In another optional embodiment, Figure 4 As shown, the detection module 304 is further used to detect whether the high-voltage circuit of the target vehicle is in a preset state before the circuit control module 303 cuts off the high-voltage circuit of the target vehicle. When the high-voltage circuit is detected to be in the preset state, the circuit control module 303 is triggered to execute the above-mentioned operation of cutting off the high-voltage circuit of the target vehicle. The preset state includes a power-on state.

[0215] The circuit control module 303 is further configured to send a closing limit signal to the high-voltage circuit when the detection module 304 detects that the high-voltage circuit is not in a preset state, so as to keep the switch contact of the first switch component in the high-voltage circuit open.

[0216] It can be seen that implementation Figure 4The described device can also actively cut off the circuit only when the high-voltage circuit is in the power-on state, which can reduce unnecessary circuit cutting operations, and keep the high-voltage circuit disconnected when the high-voltage circuit is not in the power-on state, reducing the occurrence of high-voltage circuit fires caused by the closure of the high-voltage circuit due to faults or user operations after a collision.

[0217] In another optional embodiment, Figure 4 As shown, the specific manner in which the judgment module 302 judges whether the collision effect satisfies the preset circuit protection condition according to the collision signal may include:

[0218] determining a collision parameter of the collision action according to the collision signal, wherein the collision parameter includes one or more sub-collision parameters, wherein all sub-collision parameters include one or more of a collision duration of the collision action, a collision intensity of the collision action, and a vehicle deceleration corresponding to the collision action;

[0219] Comparing the collision parameter with a preset collision parameter threshold to obtain a comparison result;

[0220] Based on the comparison results, determine whether the collision effect meets the preset circuit protection conditions.

[0221] It can be seen that implementation Figure 4 The described device can also determine that the high-voltage circuit needs to be cut off when the collision parameters detected in the high-voltage compartment and the power battery compartment exceed the preset threshold value, thereby improving the accuracy and reliability of judging whether the collision effect meets the circuit protection conditions, and reducing the occurrence of high-voltage circuit short circuit and fire due to excessive collision duration and collision force.

[0222] In another optional embodiment, Figure 4 As shown, the judgment module 302 is further configured to, before performing the above-mentioned operation of comparing the collision parameters with the preset collision parameter threshold value to obtain the comparison result, determine the collision location of the collision action according to the installation position of the collision sensor; determine the direction of the collision action according to the collision location and the predetermined forward direction of the target vehicle; update the collision parameters according to the direction of action, and trigger the above-mentioned operation of comparing the collision parameters with the preset collision parameter threshold value to obtain the comparison result;

[0223] Furthermore, the judgment module 302 is further configured to determine a collision parameter threshold that matches the collision parameter according to the collision location and / or action direction.

[0224] It can be seen that implementation Figure 4The described device can also determine the direction of the collision according to the collision position and the forward direction of the vehicle and correct the collision parameters based on this, so as to obtain collision parameters that match the direction of action, thereby minimizing the influence of unnecessary factors on the collision parameters and improving the accuracy and reliability of the collision parameters. In addition, it can also preset the collision parameter threshold according to the collision position and direction of action, thereby improving the flexibility and diversity of determining the timing of cutting off the high-voltage circuit for different collision positions and directions of action.

[0225] In another optional embodiment, Figure 4 As shown, the specific manner in which the judgment module 302 determines the collision parameters of the collision action according to the collision signal may include:

[0226] Determining the collision duration of the collision effect according to a signal band in which the corresponding signal value in the collision signal is greater than a preset signal value; and / or,

[0227] Determining the collision intensity of the collision action based on the collision signal and a predetermined intensity correlation relationship corresponding to the collision signal; and / or,

[0228] The vehicle deceleration corresponding to the collision effect is determined based on the collision signal and the vehicle speed information of the target vehicle collected in advance.

[0229] It can be seen that implementation Figure 4 The described device can also determine the collision duration, collision intensity and vehicle deceleration of the collision effect based on the signal band that meets the conditions in the collision signal, the corresponding intensity correlation relationship and the vehicle speed information of the target vehicle, thereby improving the accuracy and reliability of determining the collision parameters.

[0230] In another optional embodiment, Figure 4 As shown, the collision parameter threshold includes a sub-collision parameter threshold corresponding to each sub-collision parameter;

[0231] The specific manner in which the judgment module 302 judges whether the collision effect satisfies the preset circuit protection condition based on the comparison result may include:

[0232] When the comparison result indicates that each sub-collision parameter is a first-category sub-collision parameter, it is determined that the collision effect satisfies the preset circuit protection condition; or,

[0233] When the comparison result indicates that the specific sub-collision parameter is a first-category sub-collision parameter, it is determined that the collision effect satisfies the preset circuit protection condition; or,

[0234] When the comparison result indicates that there are at least a first preset number of first-category sub-collision parameters among all sub-collision parameters, it is determined that the collision effect satisfies the preset circuit protection condition; or,

[0235] When the comparison result indicates that at least a second preset number of first-category sub-collision parameters exist among all sub-collision parameters and at least a third preset number of second-category sub-collision parameters exist, determining that the collision action satisfies a preset circuit protection condition;

[0236] The first type of sub-collision parameter is greater than or equal to its corresponding sub-collision parameter threshold, and the second type of sub-collision parameter is less than its corresponding sub-collision parameter threshold and the ratio between the second type of sub-collision parameter and its corresponding sub-collision parameter threshold satisfies a preset proportional component.

[0237] It can be seen that implementation Figure 4 The described device can also preset corresponding circuit protection conditions according to different needs, thereby increasing the diversity of circuit protection conditions, thereby increasing the flexibility and diversity of determining the timing of cutting off the high-voltage circuit, and meeting the diverse needs of different drivers and vehicle types.

[0238] In another optional embodiment, Figure 4 As shown, the transmission module 301 is further configured to receive an environmental sensor signal sent by an environmental sensor of the target vehicle when the judgment module 302 determines that the collision effect does not meet the circuit protection condition, wherein the environmental sensor is assembled at a preset position;

[0239] The judgment module 302 is also used to judge whether the preset position meets the safety maintenance condition within the preset observation time after the collision occurs based on the environmental sensor signal; when it is judged that the preset position does not meet the safety maintenance condition, the trigger circuit control module 303 executes the above-mentioned operation of cutting off the high-voltage circuit of the target vehicle.

[0240] It can be seen that implementation Figure 4 The described device can also further monitor the environmental information of the preset position after the collision occurs when the collision effect does not meet the circuit inclusion conditions, so as to determine whether the preset position meets the safety maintenance conditions. If not, the high-voltage circuit will continue to be cut off, reducing the situation where the high-voltage circuit is not cut off in time due to the delayed impact of the collision effect, thereby reducing the occurrence of fire in the high-voltage circuit.

[0241] In another optional embodiment, Figure 4 The judgment module 302 is further used to judge whether the real-time distance between the target vehicle and the surrounding obstacles of the target vehicle is less than a first preset distance based on the radar detection signal sent by the radar system of the target vehicle; when it is judged that the real-time distance is less than the first preset distance, the transmission module 301 is triggered to perform the above-mentioned operation of receiving the collision signal sent by the collision sensor of the target vehicle, or trigger the execution of the above-mentioned operation of judging whether the collision effect meets the preset loop protection condition based on the collision signal.

[0242] It can be seen that implementation Figure 4 The described device can also detect the real-time distance between surrounding obstacles and the vehicle through a radar system, thereby reducing the probability of the vehicle being hit during driving, and detect whether a collision has occurred and whether the high-voltage circuit needs to be cut off when the distance between the surrounding obstacles and the vehicle is less than a first preset distance. This not only reduces unnecessary detection operations, but also helps to improve the response speed of the vehicle controller to collisions, so that the high-voltage circuit can be cut off in time when the vehicle collides.

[0243] Example 5

[0244] See also Figure 5 , Figure 5 Schematic diagram of the structure of a target vehicle disclosed in an embodiment of the present invention. Figure 5 As shown, the target vehicle includes a collision sensor 401, a vehicle controller 402, and a high-voltage circuit 403, wherein the collision sensor 401 is connected to the vehicle controller 402, and the vehicle controller 402 is connected to the high-voltage circuit 403. The collision sensor 401 is installed in the power battery compartment and / or the high-voltage compartment, wherein:

[0245] The collision sensor 401 is used to collect the collision signal at its location when a collision occurs with the target vehicle, and send the collected collision signal to the vehicle controller 402;

[0246] The vehicle controller 402 is used to receive the collision signal sent by the collision sensor 401, and determine whether the collision effect meets the circuit protection condition based on the collision signal. When it is determined that the collision effect meets the circuit protection condition, the high-voltage circuit 403 is cut off.

[0247] Optionally, the vehicle controller 402 is further configured to execute other steps in the vehicle collision protection method described in the first embodiment or the second embodiment of the present invention.

[0248] It can be seen that the implementation of the embodiment of the present invention can automatically cut off the vehicle's high-voltage circuit through the vehicle controller when it is detected that the collision signals of the vehicle's power battery compartment and high-voltage compartment meet the preset circuit protection conditions, thereby reducing the situation where the driver is unable to respond to the warning in time due to an emergency collision accident occurring in a very short time, and reducing the possibility of the high-voltage circuit catching fire due to a short circuit when the emergency collision event affects the power battery compartment or the high-voltage compartment, thereby improving the safety of people in the vehicle.

[0249] Example 4

[0250] See also Figure 6 , Figure 6 FIG. 1 is a structural diagram of another vehicle collision protection device disclosed in an embodiment of the present invention. Figure 6As shown, the vehicle collision protection device may include:

[0251] A memory 501 storing executable program code;

[0252] a processor 502 coupled to the memory 501;

[0253] The processor 502 calls the executable program code stored in the memory 501 to execute the steps of the vehicle collision protection method described in the first embodiment or the second embodiment of the present invention.

[0254] Example 5

[0255] An embodiment of the present invention discloses a computer storage medium storing computer instructions. When the computer instructions are called, they are used to execute the steps of the vehicle collision protection method described in the first embodiment or the second embodiment of the present invention.

[0256] Example 6

[0257] An embodiment of the present invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable a computer to execute the steps of the vehicle collision protection method described in embodiment 1 or embodiment 2.

[0258] The device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Those skilled in the art can understand and implement the present invention without inventive effort.

[0259] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus the necessary general hardware platform, or of course, by means of hardware. Based on this understanding, the above technical solution, in essence, or the portion that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, including a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium capable of carrying or storing data.

[0260] Finally, it should be noted that the vehicle collision protection method, device, and computer storage medium disclosed in the embodiments of the present invention are only preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A vehicle collision protection method, which is applied to achieve collision protection for a target vehicle, characterized in that: The target vehicle is equipped with a vehicle controller, and the method includes: When a collision occurs with the target vehicle, the vehicle controller receives a collision signal sent by a collision sensor of the target vehicle, wherein the collision sensor is mounted at a preset position of the target vehicle, the preset position including a position corresponding to a collision protection portion of the target vehicle, and the collision protection portion including a power battery compartment and / or a high-voltage compartment of the target vehicle; The vehicle controller determines whether the collision effect satisfies a preset circuit protection condition according to the collision signal; When it is determined that the collision effect satisfies the circuit protection condition, the vehicle controller cuts off the high-voltage circuit of the target vehicle; The vehicle controller determines whether the collision effect satisfies a preset circuit protection condition based on the collision signal, including: The vehicle controller determines a collision parameter of the collision action according to the collision signal, wherein the collision parameter includes one or more sub-collision parameters, wherein all the sub-collision parameters include one or more of a collision duration of the collision action, a collision intensity of the collision action, and a vehicle deceleration corresponding to the collision action; The vehicle controller compares the collision parameter with a preset collision parameter threshold to obtain a comparison result; The vehicle controller determines whether the collision effect satisfies a preset circuit protection condition based on the comparison result; The method further comprises: When it is determined that the collision does not satisfy the circuit protection condition, the vehicle controller receives an environmental sensor signal sent by an environmental sensor of the target vehicle, wherein the environmental sensor is installed at the preset position; the environmental sensor includes one or more of a temperature sensor, a light sensor, a sound sensor, and a humidity sensor, so that a fire condition that may occur inside the target vehicle can be detected by detecting environmental parameters inside the target vehicle; The vehicle controller determines, based on the environmental sensor signal, whether the preset position satisfies a safety maintenance condition within a preset observation time after the collision occurs; When it is determined that the preset position does not meet the safety maintenance condition, the vehicle controller triggers the operation of cutting off the high-voltage circuit of the target vehicle.

2. The vehicle collision protection method according to claim 1, characterized in that: The vehicle controller cuts off the high-voltage circuit of the target vehicle, including: The vehicle controller cuts off the switch control power supply of the first switch component in the high-voltage circuit of the target vehicle, so that the switch contact of the first switch component is disconnected; After the vehicle controller cuts off the high-voltage circuit of the target vehicle, the method further includes: The vehicle controller detects whether the high-voltage circuit has been successfully disconnected; When it is detected that the high-voltage circuit is not successfully disconnected, the vehicle controller determines that the first switch component has a fault and the fault of the first switch component is a preset fault, wherein the preset fault includes a switch sticking fault; The vehicle controller generates a fault record of the first switch component according to the preset fault, and the fault record is used to provide maintenance instructions corresponding to the first switch component.

3. The vehicle collision protection method according to claim 2, characterized in that: Before the vehicle controller cuts off the high-voltage circuit of the target vehicle, the method further includes: The vehicle controller detects whether the high-voltage circuit of the target vehicle is in a preset state. When the vehicle controller detects that the high-voltage circuit is in the preset state, the vehicle controller triggers the operation of cutting off the high-voltage circuit of the target vehicle, wherein the preset state includes a power-on state. When it is detected that the high-voltage circuit is not in the preset state, the vehicle controller sends a closing limit signal to the high-voltage circuit to keep the switch contact of the first switch component in the high-voltage circuit open.

4. The vehicle collision protection method according to any one of claims 1 to 3, characterized in that: Before the vehicle controller compares the collision parameter with a preset collision parameter threshold to obtain a comparison result, the method further includes: The vehicle controller determines the collision position of the collision according to the installation position of the collision sensor; The vehicle controller determines the direction of the collision according to the collision location and the predetermined forward direction of the target vehicle; The vehicle controller updates the collision parameter according to the action direction, and triggers the operation of comparing the collision parameter with a preset collision parameter threshold to obtain a comparison result; And, the method further comprises: The vehicle controller determines a collision parameter threshold value that matches the collision parameter according to the collision position and / or action direction.

5. The vehicle collision protection method according to any one of claims 1 to 3, characterized in that: The collision parameter threshold includes a sub-collision parameter threshold corresponding to each sub-collision parameter; The vehicle controller determines, based on the comparison result, whether the collision effect satisfies a preset circuit protection condition, including: When the comparison result indicates that each of the sub-collision parameters is a first-category sub-collision parameter, the vehicle controller determines that the collision effect satisfies a preset circuit protection condition; or When the comparison result indicates that the specific sub-collision parameter is a first-category sub-collision parameter, the vehicle controller determines that the collision effect satisfies a preset circuit protection condition; or When the comparison result indicates that at least a first preset number of first-category sub-collision parameters exist in all the sub-collision parameters, the vehicle controller determines that the collision effect satisfies a preset circuit protection condition; or When the comparison result indicates that at least a second preset number of first-category sub-collision parameters exist among all the sub-collision parameters and at least a third preset number of second-category sub-collision parameters exist, the vehicle controller determines that the collision action satisfies a preset circuit protection condition; The first-type sub-collision parameter is greater than or equal to its corresponding sub-collision parameter threshold, and the second-type sub-collision parameter is less than its corresponding sub-collision parameter threshold and a ratio thereof satisfies a preset proportional component.

6. The vehicle collision protection method according to any one of claims 1, 2 and 3, characterized in that: The method further comprises: The vehicle controller determines whether a real-time distance between the target vehicle and the surrounding obstacles of the target vehicle is less than a first preset distance based on a radar detection signal sent by the radar system of the target vehicle; When it is determined that the real-time distance is less than the first preset distance, the vehicle controller triggers the operation of receiving the collision signal sent by the collision sensor of the target vehicle, or the vehicle controller triggers the operation of determining whether the collision effect meets the preset circuit protection condition based on the collision signal.

7. A collision protection device for new energy vehicles, characterized in that: The device comprises: a memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the vehicle collision protection method according to any one of claims 1 to 6.

8. A computer storage medium, characterized in that The computer storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the vehicle collision protection method according to any one of claims 1 to 6.

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