CN117445668A - Method, device, equipment and storage medium for processing high-voltage interlocking fault - Google Patents
Method, device, equipment and storage medium for processing high-voltage interlocking fault Download PDFInfo
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- CN117445668A CN117445668A CN202311451796.8A CN202311451796A CN117445668A CN 117445668 A CN117445668 A CN 117445668A CN 202311451796 A CN202311451796 A CN 202311451796A CN 117445668 A CN117445668 A CN 117445668A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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Abstract
The application discloses a method, a device, equipment and a storage medium for processing high-voltage interlocking faults, wherein the method comprises the following steps: under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is upper high voltage, acquiring the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the failure; calculating a voltage difference between each of the actual voltages and the battery bus voltage; and determining whether to perform low-high voltage electric processing on the vehicle according to the vehicle speed, the voltage difference and the fault duration. According to the technical scheme, whether the vehicle is subjected to high-voltage electricity treatment or not can be determined according to the actual condition of the vehicle, the situation that the vehicle is anchored due to direct high-voltage electricity is avoided, and the safety of the vehicle is improved.
Description
Technical Field
The application belongs to the technical field of high-voltage safety, and particularly relates to a method, a device, equipment and a storage medium for processing a high-voltage interlocking fault.
Background
Compared with the fuel power generation driving of the traditional fuel automobile, the electric power driving of the electric automobile can provide a more silent riding environment and stronger acceleration performance for users. However, the operating voltage of the electric vehicle is generally 300V or more, even 800V or more, and far exceeds the human safety voltage of 36V, so high-voltage safety is an important issue in the design of electric vehicles. In order to ensure the riding safety of passengers of the electric automobile and the operation safety of operators, the electric automobile needs to be subjected to high-voltage interlocking design.
At present, when a vehicle detects a high-voltage interlocking fault, countermeasures of directly lowering high-voltage electricity are generally taken, and the vehicle is anchored due to the direct lowering of the high-voltage electricity, so that a rear-end collision risk can be caused. Therefore, when the high-voltage interlocking fault occurs in the current vehicle, the safety is low.
Disclosure of Invention
The embodiment of the application provides a method, a device, equipment and a storage medium for processing high-voltage interlocking faults, and further solves the problem of low safety when the high-voltage interlocking faults occur to a vehicle at least to a certain extent.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned in part by the practice of the application.
According to a first aspect of embodiments of the present application, there is provided a method for handling a high voltage interlock fault, applied to a vehicle, the vehicle including a high voltage interlock loop, the high voltage interlock loop including a plurality of high voltage consumers connected in series, the method comprising:
under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is upper high voltage, acquiring the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the failure;
calculating a voltage difference between each of the actual voltages and the battery bus voltage;
and determining whether to perform low-high voltage electric processing on the vehicle according to the vehicle speed, the voltage difference and the fault duration.
In some embodiments of the present application, based on the foregoing aspect, the determining whether to perform the low-high voltage electric process on the vehicle according to the vehicle speed, the voltage difference, and the fault duration includes:
acquiring a first state of a front hatch and a second state of a trunk under the condition that the vehicle speed is smaller than a first preset value;
performing a lower high voltage electric process on the vehicle in a case where any one of the voltage difference, the failure duration, the first state, and the second state satisfies a first preset condition, the first preset condition being that at least one of the voltage differences is not less than a second preset value, the failure duration is greater than a third preset value, the first state is on, or the second state is on;
and under the condition that the voltage difference, the fault duration, the first opening state and the second opening state do not meet the first preset condition, keeping the vehicle in the high-voltage state and outputting first fault prompt information.
In some embodiments of the present application, based on the foregoing aspect, the high-voltage interlock loop further includes a high-voltage connector and a low-voltage connector, and the processing method further includes:
determining that the high-voltage connector is abnormally connected under the condition that at least one voltage difference is not smaller than the second preset value;
and judging that the low-voltage connector is abnormally connected under the condition that at least one voltage difference is smaller than the second preset value.
In some embodiments of the present application, based on the foregoing, the third preset value is less than a length of time that the high voltage interlock loop takes from failure to ablation of the high voltage connector.
In some embodiments of the present application, based on the foregoing aspect, the determining whether to perform the low-high voltage electric process on the vehicle according to the vehicle speed, the voltage difference, and the fault duration includes:
judging whether the voltage difference and the fault duration meet a second preset condition or not under the condition that the vehicle speed is larger than or equal to the first preset value, wherein the second preset condition is that at least one voltage difference is not smaller than a second preset value or the fault duration is larger than a third preset value;
under the condition that any one of the voltage difference and the fault duration meets the second preset condition, keeping the vehicle in the high-voltage state, performing speed limiting processing on the vehicle, and outputting second fault prompt information;
and under the condition that the voltage difference and the fault duration do not meet the second preset condition, keeping the vehicle in the high-voltage state, and outputting the second fault prompt information.
In some embodiments of the present application, based on the foregoing solution, when any one of the voltage difference and the fault duration meets the second preset condition, the method keeps the vehicle in the high-voltage state, performs speed limiting processing on the vehicle, and outputs a second fault prompting message, including:
acquiring a setting area of a high-voltage component of the vehicle when any one of the voltage difference and the fault duration satisfies the second preset condition;
and under the condition that the setting area does not comprise the passenger cabin, keeping the vehicle in the high-pressure state, performing speed limiting processing on the vehicle, and outputting second fault prompt information.
In some embodiments of the present application, based on the foregoing solution, the method for processing a high-voltage interlock fault further includes:
and under the condition that the high-voltage interlocking loop fails before the low voltage on the vehicle, not responding to the operation of carrying out preset treatment on the vehicle, wherein the preset treatment comprises high-voltage charging, direct-current charging, alternating-current charging and external discharging.
According to a second aspect of embodiments of the present application, there is provided a processing device for a high voltage interlock fault, applied to a vehicle, the vehicle including a high voltage interlock loop, the high voltage interlock loop including a plurality of high voltage electric devices connected in series, the processing device including:
the data acquisition unit is used for acquiring the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the fault under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is the upper high voltage;
a voltage difference calculation unit for calculating a voltage difference between each of the actual voltages and the battery bus voltage;
and the lower high-voltage electric control unit is used for determining whether to perform lower high-voltage electric treatment on the vehicle according to the vehicle speed, the voltage difference and the fault duration.
In some embodiments of the present application, based on the foregoing solution, the lower high-voltage control unit is further configured to obtain, when the vehicle speed is less than a first preset value, a first state of the front hatch and a second state of the trunk; performing a lower high voltage electric process on the vehicle in a case where any one of the voltage difference, the failure duration, the first state, and the second state satisfies a first preset condition, the first preset condition being that at least one of the voltage differences is not less than a second preset value, the failure duration is greater than a third preset value, the first state is on, or the second state is on; and under the condition that the voltage difference, the fault duration, the first opening state and the second opening state do not meet the first preset condition, keeping the vehicle in the high-voltage state and outputting first fault prompt information.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage control unit is further configured to determine that the high voltage connector is abnormally connected if at least one of the voltage differences is not less than the second preset value; and judging that the low-voltage connector is abnormally connected under the condition that at least one voltage difference is smaller than the second preset value.
In some embodiments of the present application, based on the foregoing, the third preset value is less than a length of time that the high voltage interlock loop takes from failure to ablation of the high voltage connector.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage control unit is further configured to determine whether the voltage difference and the fault duration meet a second preset condition, where the second preset condition is that at least one of the voltage difference is not less than a second preset value or the fault duration is greater than a third preset value, when the vehicle speed is greater than or equal to the first preset value; under the condition that any one of the voltage difference and the fault duration meets the second preset condition, keeping the vehicle in the high-voltage state, performing speed limiting processing on the vehicle, and outputting second fault prompt information; and under the condition that the voltage difference and the fault duration do not meet the second preset condition, keeping the vehicle in the high-voltage state, and outputting the second fault prompt information.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage control unit is further configured to obtain a setting area of a high voltage component of the vehicle if any one of the voltage difference and the fault duration meets the second preset condition; and under the condition that the setting area does not comprise the passenger cabin, keeping the vehicle in the high-pressure state, performing speed limiting processing on the vehicle, and outputting second fault prompt information.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage electric control unit is further configured to further include: and under the condition that the high-voltage interlocking loop fails before the low voltage on the vehicle, not responding to the operation of carrying out preset treatment on the vehicle, wherein the preset treatment comprises high-voltage charging, direct-current charging, alternating-current charging and external discharging.
According to a third aspect of embodiments of the present application, there is provided a high voltage interlock fault handling device comprising a processor and a memory storing computer program instructions executable by the processor, the processor implementing the steps of the method according to any of the first aspects above when executing the computer program instructions.
According to a fourth aspect of embodiments of the present application, there is provided a computer readable storage medium having stored therein computer program instructions which, when executed by a processor, cause the processor to carry out the steps of the method according to any of the first aspect above.
In the application, under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is the upper high voltage, acquiring the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the failure; calculating a voltage difference between each of the actual voltages and the battery bus voltage; and determining whether to perform low-high voltage electric processing on the vehicle according to the vehicle speed, the voltage difference and the fault duration. According to the technical scheme, whether the vehicle is subjected to high-voltage electricity treatment or not can be determined according to the actual condition of the vehicle, the situation that the vehicle is anchored due to direct high-voltage electricity is avoided, and the safety of the vehicle is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:
FIG. 1 illustrates an application environment diagram of a method of handling high voltage interlock faults in one embodiment;
FIG. 2 illustrates a flow diagram of a method of handling a high voltage interlock fault in one embodiment;
FIG. 3 illustrates a block diagram of an apparatus for handling high voltage interlock faults in one embodiment;
fig. 4 shows a schematic structural diagram of an apparatus for handling high voltage interlock faults in one embodiment.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the aspects of the application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
For better understanding of the present application, a simple description of an application scenario related to the present application is first described with reference to fig. 1.
Referring to fig. 1, a schematic diagram of a scenario in which the method of handling a high voltage interlock fault of an embodiment of the present application may be applied is shown.
The high-voltage interlocking circuit (HV inter) of the whole vehicle comprises a plurality of high-voltage electric equipment (vehicle-mounted charger, a rear driving motor controller, an air conditioner compressor, a PTC heater, a front driving motor controller and the like), a high-voltage Connector (HV Connector), a low-voltage Connector (LV Connector) and a power battery, wherein each high-voltage electric equipment is connected in series, a power battery management system integrated in the power battery can detect whether the high-voltage interlocking circuit fails or not, and sends detection results to the whole vehicle controller (not shown), and the whole vehicle controller processes the high-voltage interlocking failure according to the detection results.
Fig. 2 is a schematic flow chart of a method for handling a high-voltage interlock fault in an embodiment, and as shown in fig. 2, a method for handling a high-voltage interlock fault is provided, and the method is described by taking an example that the method is applied to a vehicle controller, and the method may include the following steps 101 to 103.
And step 101, acquiring the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the fault under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is the upper high voltage.
It can be appreciated that the power battery management system can detect whether the high-voltage interlocking loop fails, and the vehicle controller can acquire a detection result from the power battery management system to determine whether the high-voltage interlocking loop fails.
In the implementation process, as the high-voltage electric equipment is connected in series, the whole vehicle controller can calculate and obtain the actual voltage of the high-voltage electric equipment according to the current of the high-voltage interlocking loop and the resistance value of the high-voltage electric equipment.
Step 102, calculating the voltage difference between each actual voltage and the battery bus voltage.
In the implementation process, the voltage of the battery bus and the actual voltage of each high-voltage electric equipment can be respectively differentiated to obtain a plurality of voltage differences.
Step 103, determining whether to perform low-high voltage electric processing on the vehicle according to the vehicle speed, the voltage difference and the fault duration.
Specifically, whether to perform the low-high voltage electric process on the vehicle may be determined based on the vehicle speed, the calculated plurality of voltage differences, and the failure duration.
In some embodiments, the first state of the front hatch and the second state of the trunk may be acquired if the vehicle speed is less than a first preset value; under the condition that any one of the voltage difference, the fault duration, the first state and the second state meets a first preset condition, performing low-high voltage electric treatment on the vehicle, wherein the first preset condition is that at least one voltage difference is not smaller than a second preset value, the fault duration is larger than a third preset value, and the first state is open or the second state is open; and under the condition that the voltage difference, the fault duration, the first opening state and the second opening state do not meet the first preset condition, keeping the vehicle in a high-voltage state and outputting first fault prompt information.
In the implementation process, the first preset value, the second preset value and the third preset value may be designed according to practical situations, for example, the first preset value may be 3kph, the second preset value may be 80V, and the third preset value may be 600s.
The following will describe in detail an example in which the first preset value is 3kph, the second preset value is 80V, and the third preset value is 600s.
The first preset condition may be: any one of the plurality of voltage differences is greater than or equal to 80V, the fault duration is greater than 600s, the front hatch is open, or the trunk is open.
Under the condition that the vehicle speed is smaller than 3kph, if the four parameters of the voltage difference, the fault duration, the first opening state and the second opening state meet any one of the first preset conditions, the vehicle needs to be subjected to low-high voltage electric processing, and if none of the four parameters meet the first preset conditions, the vehicle is kept in an upper high-voltage state, and first fault prompt information is output.
If any one of the voltage differences is greater than or equal to 80V, the connection of the high-voltage loop is abnormal, and the risk of electric shock exists in the exposure of the high-voltage connector terminal; if the fault duration is longer than 600s, the high-voltage interlocking loop is indicated to continuously fault, and then accidental faults can be eliminated, so that the user experience is prevented from being reduced due to frequent high voltage reduction; if the front hatch is opened or the trunk is opened, high-voltage parts in the front hatch or the trunk may be touched by a user to cause high-voltage electric shock accidents.
When any one of the four parameters meets the first preset condition, the high-voltage safety risk is higher, and at the moment, the high-voltage power supply is required to be turned off, a red fault lamp is required to be turned on, and first fault prompting information is output, for example, a character is continuously used on an instrument to prompt that the cable connection is abnormal, and a delivery center is required to be contacted, so that the risk of a user is prompted.
When all the four parameters do not meet the first preset condition, the high-voltage safety risk is extremely low, the vehicle is kept in an upper high-voltage state, and only the first fault prompt information is output.
In some embodiments, the high voltage interlock loop further comprises a high voltage connector and a low voltage connector, and the high voltage connector is judged to be connected abnormally under the condition that at least one voltage difference is not smaller than a second preset value; and judging that the low-voltage connector is abnormally connected under the condition that at least one voltage difference is smaller than a second preset value.
It will be appreciated that when the high-voltage interlock loop fails, it is possible that the high-voltage connector is connected abnormally, and it is possible that the low-voltage connector is connected abnormally, and by effectively identifying the failure cause of the high-voltage interlock loop according to whether the at least one voltage difference is smaller than the second preset value, it is possible to reduce the vehicle break down caused by the failure of the high-voltage interlock loop due to the connection abnormality of the low-voltage connector.
In some embodiments, the third preset value is less than a length of time that the high voltage interlock loop takes from failure to ablation of the high voltage connector.
In the implementation process, the time length from the occurrence of the fault of the high-voltage interlocking loop to the occurrence of the ablation phenomenon of the high-voltage connector can be obtained through simulation of the fault working condition of the high-voltage interlocking loop and testing, and the third preset value is set to be smaller than the time length, so that the ablation phenomenon of the high-voltage connector can be avoided.
In other embodiments, if the vehicle speed is greater than or equal to the first preset value, it may be determined whether the voltage difference and the fault duration meet a second preset condition, where the second preset condition is that at least one voltage difference is not less than the second preset value or the fault duration is greater than a third preset value; under the condition that any one of the voltage difference and the fault duration meets a second preset condition, keeping the vehicle in a high-voltage state, performing speed limiting processing on the vehicle, and outputting second fault prompt information; and under the condition that the voltage difference and the fault duration do not meet the second preset condition, keeping the vehicle in a high-voltage state and outputting second fault prompt information.
It will be appreciated that if the vehicle speed is greater than or equal to the first preset value, indicating that the vehicle is running or that the wheels are in motion, it is necessary to determine whether the voltage difference and the duration of the fault meet the second preset condition.
In the implementation process, the first preset value, the second preset value and the third preset value may be designed according to practical situations, for example, the first preset value may be 3kph, the second preset value may be 80V, and the third preset value may be 600s.
The following will describe in detail an example in which the first preset value is 3kph, the second preset value is 80V, and the third preset value is 600s.
The second preset condition may be: any one of the plurality of voltage differences is greater than or equal to 80V and the fault duration is greater than 600s.
Under the condition that the vehicle speed is greater than or equal to 3kph, if the two parameters of the voltage difference and the fault duration meet any one of the second preset conditions, the speed limiting processing is needed to be carried out on the vehicle, and if the two parameters do not meet the first preset conditions, the vehicle is kept in an upper high-voltage state, and second fault prompt information is output.
If any one of the voltage differences is greater than or equal to 80V, the connection of the high-voltage loop is abnormal, and the risk of electric shock exists in the exposure of the high-voltage connector terminal; if the fault duration is longer than 600s, the high-voltage interlocking loop is indicated to continuously fault, and accidental faults can be eliminated at the moment, so that the user experience is prevented from being reduced due to frequent high-voltage power supply.
When the two parameters meet any one of the second preset conditions, the high-voltage safety risk is shown to be truly present, but in consideration of the fact that the vehicle is running, if the vehicle is subjected to the low-voltage electric treatment at the moment, the vehicle is anchored possibly to cause rear-end collision risk, the text reminding of 'abnormal cable connection, fast safe parking and parallel connection of a delivery center' can be continuously used on the instrument at the moment, and the vehicle is controlled to speed-limiting running, for example, speed limiting is 40km/h, so that the vehicle can be safely stopped by the side, and then yellow fault lamps and tortoise lamps are lighted.
When the two parameters do not meet the second preset condition, the risk of high-voltage safety is very low, but the risk is deteriorated and the vehicle speed is reduced to be less than 3pkh, so that the vehicle can be kept in an upper high-voltage state, but a second fault prompt message needs to be output, for example, a character is continuously used on an instrument to remind that the cable is abnormally connected, please safely stop as soon as possible, and the delivery center is connected, so as to remind a user of safely stopping as soon as possible.
In some embodiments, in the event that any one of the voltage difference and the failure duration satisfies a second preset condition, acquiring a set area of a high-voltage component of the vehicle; and under the condition that the setting area does not comprise the passenger cabin, keeping the vehicle in a high-pressure state, performing speed limiting processing on the vehicle, and outputting second fault prompt information.
It will be appreciated that the high voltage components of the vehicle may be located in the trunk, front compartment, passenger compartment, etc., and if the high voltage components of the vehicle are not located in the passenger compartment, this indicates that the user will not directly or indirectly contact the high voltage in the passenger compartment with a very low risk of high voltage safety. At this time, in order to achieve both of the running safety and the high-voltage safety, the vehicle may be kept in a high-voltage state, speed-limiting processing may be performed on the vehicle, and the second failure notification information may be output.
By adding judgment conditions under the running scene of the vehicle, the high-pressure safety risk is controlled, meanwhile, the speed-limited running of the vehicle is guaranteed, the safe parking is reminded, and the rear-end collision risk caused by the anchoring of the vehicle is avoided.
In some embodiments, in the event that the high voltage interlock loop fails before the low voltage on the vehicle, the operation of pre-setting the vehicle, including charging the high voltage, charging the direct current, charging the alternating current, and discharging the exterior, is not responded to.
It will be appreciated that if the vehicle controller receives a command that the high voltage interlock circuit fails before the low voltage power is applied to the vehicle, a relatively strict processing strategy is required to be executed to ensure high voltage safety, i.e. to prohibit the vehicle from being charged up to the high voltage, charged up to the direct current, charged up to the alternating current, and discharged out. At this time, the battery management system reports a high-voltage interlocking loop fault and lights a red fault lamp.
According to the embodiment of the application, under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is the upper high voltage, the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the failure are obtained; calculating the voltage difference between each actual voltage and the bus voltage of the battery; and determining whether to perform low-high voltage electric processing on the vehicle according to the vehicle speed, the voltage difference and the fault duration. According to the technical scheme, whether the vehicle is subjected to high-voltage electricity treatment or not can be determined according to the actual condition of the vehicle, the situation that the vehicle is anchored due to direct high-voltage electricity is avoided, and the safety of the vehicle is improved.
The following describes embodiments of the apparatus of the present application that may be used to perform the method of handling high voltage interlock faults in the above-described embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method for handling high voltage interlock faults described in the present application.
Referring to fig. 3, a block diagram of a high voltage interlock fault handling apparatus in an embodiment of the present application is shown.
As shown in fig. 3, the device for handling a high-voltage interlock fault in an embodiment of the present application is applied to a vehicle, where the vehicle includes a high-voltage interlock circuit, the high-voltage interlock circuit includes a plurality of high-voltage electric devices connected in series, and the device for handling a high-voltage interlock fault may include: the system comprises a data acquisition unit 301, a voltage difference calculation unit 302 and a lower high-voltage electric control unit 303, wherein the data acquisition unit 301 is used for acquiring the speed of a vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the fault when a high-voltage interlocking loop fails and the high-voltage state of the vehicle is the upper high voltage; a voltage difference calculation unit 302 for calculating a voltage difference between each actual voltage and the battery bus voltage; the lower high voltage electric control unit 303 is configured to determine whether to perform a lower high voltage electric process on the vehicle according to the vehicle speed, the voltage difference, and the failure duration.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage control unit 303 is further configured to obtain, when the vehicle speed is less than a first preset value, a first state of the front hatch and a second state of the trunk; under the condition that any one of the voltage difference, the fault duration, the first state and the second state meets a first preset condition, performing low-high voltage electric treatment on the vehicle, wherein the first preset condition is that at least one voltage difference is not smaller than a second preset value, the fault duration is larger than a third preset value, and the first state is open or the second state is open; and under the condition that the voltage difference, the fault duration, the first opening state and the second opening state do not meet the first preset condition, keeping the vehicle in a high-voltage state and outputting first fault prompt information.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage control unit 303 is further configured to determine that the high voltage connector is abnormally connected if at least one voltage difference is not less than a second preset value; and judging that the low-voltage connector is abnormally connected under the condition that at least one voltage difference is smaller than a second preset value.
In some embodiments of the present application, based on the foregoing, the third preset value is less than a length of time that the high voltage interlock loop takes from failure to ablation of the high voltage connector.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage control unit 303 is further configured to determine, if the vehicle speed is greater than or equal to a first preset value, whether the voltage difference and the fault duration meet a second preset condition, where the second preset condition is that at least one voltage difference is not less than the second preset value or the fault duration is greater than a third preset value; under the condition that any one of the voltage difference and the fault duration meets a second preset condition, keeping the vehicle in a high-voltage state, performing speed limiting processing on the vehicle, and outputting second fault prompt information; and under the condition that the voltage difference and the fault duration do not meet the second preset condition, keeping the vehicle in a high-voltage state and outputting second fault prompt information.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage control unit 303 is further configured to obtain a setting area of a high voltage component of the vehicle if any one of the voltage difference and the fault duration meets a second preset condition; and under the condition that the setting area does not comprise the passenger cabin, keeping the vehicle in a high-pressure state, performing speed limiting processing on the vehicle, and outputting second fault prompt information.
In some embodiments of the present application, based on the foregoing solution, the lower high voltage electric control unit 303 is further configured to further include: under the condition that the high-voltage interlocking loop fails before the voltage on the vehicle, the operation of carrying out preset processing on the vehicle is not responded, and the preset processing comprises high-voltage charging, direct-current charging, alternating-current charging and external discharging.
Based on the same concept, the embodiments of the present application further provide a high voltage interlock fault handling device, referring to fig. 4, which shows a schematic structural diagram of the high voltage interlock fault handling device in the embodiments of the present application, where the high voltage interlock fault handling device includes one or more memories 404, one or more processors 402, and at least one computer program (computer program instruction) stored on the memories 404 and executable on the processors 402, and when the processors 402 execute the computer program, the method is implemented as described above.
Where in FIG. 4 a bus architecture (represented by bus 400), bus 400 may comprise any number of interconnected buses and bridges, with bus 400 linking together various circuits, including one or more processors, represented by processor 402, and memory, represented by memory 404. Bus 400 may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., as are well known in the art and, therefore, will not be described further herein. Bus interface 405 provides an interface between bus 400 and receiver 401 and transmitter 403. The receiver 401 and the transmitter 403 may be the same element, i.e. a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 402 is responsible for managing the bus 400 and general processing, while the memory 404 may be used to store data used by the processor 402 in performing operations.
Based on the same inventive concept, embodiments of the present application provide a computer-readable storage medium having stored therein computer program instructions which, when executed by a processor, cause the processor to implement the steps of the method as described above.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software that is executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the present application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated in one processing unit, each unit may exist alone physically, or two or more units may be integrated in one unit.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate components may or may not be physically separate, and components as control devices may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing computer program instructions.
The foregoing is merely exemplary of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for handling a high voltage interlock fault applied to a vehicle, the vehicle comprising a high voltage interlock loop, the high voltage interlock loop comprising a plurality of high voltage powered devices connected in series, the method comprising:
under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is upper high voltage, acquiring the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the failure;
calculating a voltage difference between each of the actual voltages and the battery bus voltage;
and determining whether to perform low-high voltage electric processing on the vehicle according to the vehicle speed, the voltage difference and the fault duration.
2. The method of handling a high voltage interlock fault according to claim 1, wherein said determining whether to subject the vehicle to a lower high voltage electrical process based on the vehicle speed, the voltage difference, and the fault duration comprises:
acquiring a first state of a front hatch and a second state of a trunk under the condition that the vehicle speed is smaller than a first preset value;
performing a lower high voltage electric process on the vehicle in a case where any one of the voltage difference, the failure duration, the first state, and the second state satisfies a first preset condition, the first preset condition being that at least one of the voltage differences is not less than a second preset value, the failure duration is greater than a third preset value, the first state is on, or the second state is on;
and under the condition that the voltage difference, the fault duration, the first opening state and the second opening state do not meet the first preset condition, keeping the vehicle in the high-voltage state and outputting first fault prompt information.
3. The method of handling high voltage interlock faults of claim 2, wherein the high voltage interlock loop further comprises a high voltage connector and a low voltage connector, the method further comprising:
determining that the high-voltage connector is abnormally connected under the condition that at least one voltage difference is not smaller than the second preset value;
and judging that the low-voltage connector is abnormally connected under the condition that at least one voltage difference is smaller than the second preset value.
4. The method of claim 2, wherein the third predetermined value is less than a time period taken for the high voltage interlock circuit to fail to ablate the high voltage connector.
5. The method of handling a high voltage interlock fault according to claim 1, wherein said determining whether to subject the vehicle to a lower high voltage electrical process based on the vehicle speed, the voltage difference, and the fault duration comprises:
judging whether the voltage difference and the fault duration meet a second preset condition or not under the condition that the vehicle speed is larger than or equal to the first preset value, wherein the second preset condition is that at least one voltage difference is not smaller than a second preset value or the fault duration is larger than a third preset value;
under the condition that any one of the voltage difference and the fault duration meets the second preset condition, keeping the vehicle in the high-voltage state, performing speed limiting processing on the vehicle, and outputting second fault prompt information;
and under the condition that the voltage difference and the fault duration do not meet the second preset condition, keeping the vehicle in the high-voltage state, and outputting the second fault prompt information.
6. The method according to claim 5, wherein, in a case where any one of the voltage difference and the failure duration satisfies the second preset condition, maintaining the vehicle in the high-voltage state, performing speed-limiting processing on the vehicle, and outputting a second failure notification message, comprising:
acquiring a setting area of a high-voltage component of the vehicle when any one of the voltage difference and the fault duration satisfies the second preset condition;
and under the condition that the setting area does not comprise the passenger cabin, keeping the vehicle in the high-pressure state, performing speed limiting processing on the vehicle, and outputting second fault prompt information.
7. The method for handling high voltage interlock faults according to any of claims 1 to 6, further comprising:
and under the condition that the high-voltage interlocking loop fails before the low voltage on the vehicle, not responding to the operation of carrying out preset treatment on the vehicle, wherein the preset treatment comprises high-voltage charging, direct-current charging, alternating-current charging and external discharging.
8. A high voltage interlock fault handling device for a vehicle, the vehicle comprising a high voltage interlock circuit including a plurality of high voltage powered devices connected in series, the handling device comprising:
the data acquisition unit is used for acquiring the speed of the vehicle, the actual voltage of each high-voltage electric equipment, the voltage of a battery bus and the duration of the fault under the condition that the high-voltage interlocking loop fails and the high-voltage state of the vehicle is the upper high voltage;
a voltage difference calculation unit for calculating a voltage difference between each of the actual voltages and the battery bus voltage;
and the lower high-voltage electric control unit is used for determining whether to perform lower high-voltage electric treatment on the vehicle according to the vehicle speed, the voltage difference and the fault duration.
9. A high voltage interlock fault handling device comprising a processor and a memory, wherein the memory stores computer program instructions executable by the processor, which when executed by the processor, implement the steps of the method of any of claims 1 to 7.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein computer program instructions which, when executed by a processor, cause the processor to carry out the steps of the method according to any one of claims 1 to 7.
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| CN202311451796.8A CN117445668A (en) | 2023-10-31 | 2023-10-31 | Method, device, equipment and storage medium for processing high-voltage interlocking fault |
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| CN202311451796.8A CN117445668A (en) | 2023-10-31 | 2023-10-31 | Method, device, equipment and storage medium for processing high-voltage interlocking fault |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118144583A (en) * | 2024-05-09 | 2024-06-07 | 盛瑞传动股份有限公司 | Vehicle high-voltage interlocking control method, device, equipment and medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118144583A (en) * | 2024-05-09 | 2024-06-07 | 盛瑞传动股份有限公司 | Vehicle high-voltage interlocking control method, device, equipment and medium |
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