CN114379368B - High-voltage interlocking fault processing method and device for pure electric vehicle and pure electric vehicle - Google Patents
High-voltage interlocking fault processing method and device for pure electric vehicle and pure electric vehicle Download PDFInfo
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- CN114379368B CN114379368B CN202210063279.2A CN202210063279A CN114379368B CN 114379368 B CN114379368 B CN 114379368B CN 202210063279 A CN202210063279 A CN 202210063279A CN 114379368 B CN114379368 B CN 114379368B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/035—Bringing the control units into a predefined state, e.g. giving priority to particular actuators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/038—Limiting the input power, torque or speed
Abstract
The invention discloses a high-voltage interlocking fault processing method of a pure electric vehicle based on map navigation, which is characterized in that when the vehicle has a high-voltage interlocking fault and is positioned on a non-high-speed road section, if the vehicle does not run through the key cycle at the present time, a high-voltage relay is not allowed to be closed; when the vehicle has a high-voltage interlocking fault and is in a non-high-speed road section, if the vehicle is in a running mode, the vehicle speed is smaller than a second preset vehicle speed and the main driver is unmanned, the high-voltage relay is disconnected; when the vehicle has a high-voltage interlocking fault and is in a non-high-speed road section, if the vehicle is in a drivable mode, the vehicle speed is smaller than or equal to a second preset vehicle speed and a main driver has a person, limiting the highest vehicle speed of the vehicle to the second preset vehicle speed; when the vehicle has a high-voltage interlocking fault and is in a high-speed road section or the vehicle speed is greater than a second preset vehicle speed, no power limitation is carried out; the method can reduce the risk of direct power interruption of high-voltage interlocking faults and improve the user satisfaction.
Description
Technical Field
The invention relates to the technical field of pure electric vehicles, in particular to a method and a device for processing high-voltage interlocking faults of a pure electric vehicle and the pure electric vehicle.
Background
The high-voltage platform of the pure electric automobile is generally 300V or more, direct current of 60V or more is harmful, high-voltage electric appliances and high-voltage wire bundles of all vehicles have good protection, and high-voltage interlocking is one of the essential high-voltage electric appliances and high-voltage wire bundles.
When the controller sends a low-level signal outwards, the signal returns to the controller through the high-voltage loop, if the controller cannot receive the signal, the situation that the high-voltage connector in the high-voltage loop is poor in connection is considered, and in order to avoid dangerous situations, most vehicles disconnect the high-voltage relay, so that power interruption occurs to the vehicles; if the vehicle is running on the highway at this time, the risk caused by the power interruption is also unacceptable, because it is necessary to design a method for handling the high-voltage interlocking fault of the pure electric vehicle, so as to reduce the risk and increase the satisfaction of the user.
Disclosure of Invention
The invention aims to provide a method and a device for processing high-voltage interlocking faults of a pure electric vehicle and the pure electric vehicle, wherein the method can reduce the risk of direct power interruption of the high-voltage interlocking faults and improve user satisfaction.
In order to achieve the above purpose, the embodiment of the present invention provides a method for processing a high-voltage interlock fault of a pure electric vehicle based on map navigation, including:
when the high-voltage interlocking fault occurs to the vehicle, judging whether the current gear of the ignition key is in a non-OFF gear or not;
if the current gear of the ignition key is in the non-OFF gear, determining a driving road section where the vehicle is currently located based on map navigation information provided by vehicle navigation;
and executing power output processing on the whole vehicle based on the current driving road section of the vehicle, the current speed of the vehicle and the state of the main driving seat.
Preferably, the method further comprises:
and if the current gear of the ignition key is in the OFF gear, the high-voltage relay in the whole vehicle high-voltage loop is forbidden to be closed, and the vehicle is forbidden to run.
Preferably, the step of performing the power output process for the entire vehicle based on the current driving section in which the vehicle is located, the current speed of the vehicle, and the main driving seat state of the vehicle includes:
if the vehicle is in a high-speed road section or if the vehicle is in a non-high-speed road section and the current speed of the vehicle is greater than a first preset speed, the vehicle is not subjected to power output limitation, so that the vehicle keeps running at the current speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to the first preset speed, and a main driving seat of the vehicle is occupied, the vehicle is subjected to power output limitation, so that the highest driving speed of the vehicle is limited to the first preset speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to a second preset speed, and the main driving seat of the vehicle is unmanned, the vehicle is subjected to power output limitation, and the vehicle is prohibited from continuously driving; and inhibit the closing of the high voltage relay in the whole vehicle high voltage loop.
The invention also provides a high-voltage interlocking fault processing device of the pure electric automobile based on map navigation, which comprises the following steps:
the judging module is used for judging whether the current gear of the ignition key is in a non-OFF gear when the vehicle has a high-voltage interlocking fault;
the determining module is used for determining a current driving road section of the vehicle based on map navigation information provided by vehicle navigation if the current gear of the ignition key is in a non-OFF gear;
and the processing module is used for executing power output processing on the whole vehicle based on the current driving road section of the vehicle, the current speed of the vehicle and the main driving seat state.
The invention also provides a pure electric vehicle, which comprises the pure electric high-voltage interlocking fault processing device based on map navigation.
The beneficial effects of the invention are as follows:
the scheme of the invention can reduce the risk of direct power interruption of high-voltage interlocking faults and improve the user satisfaction.
Drawings
FIG. 1 is a schematic diagram of the control interaction between the map navigation and the controller in the present embodiment;
fig. 2 is a flowchart of a process in which a high-voltage interlock failure occurs in the present embodiment.
Detailed Description
Embodiments of the present invention are described in detail below. It should be understood that the examples are only for the purpose of illustrating the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a method for processing high-voltage interlocking faults of a pure electric vehicle based on map navigation, where the method is applied to a vehicle controller, and includes:
when the high-voltage interlocking fault occurs to the vehicle, judging whether the current gear of the ignition key is in a non-OFF gear or not;
if the current gear of the ignition key is in the non-OFF gear, determining a driving road section where the vehicle is currently located based on map navigation information provided by vehicle navigation;
and executing power output processing on the whole vehicle based on the current driving road section of the vehicle, the current speed of the vehicle and the main driving seat state of the vehicle.
Preferably, the method further comprises:
and if the current gear of the ignition key is in the OFF gear, the high-voltage relay in the whole vehicle high-voltage loop is forbidden to be closed, and the vehicle is forbidden to run.
Preferably, the step of performing the power output process for the entire vehicle based on the current driving section in which the vehicle is located, the current speed of the vehicle, and the main driving seat state of the vehicle includes:
if the vehicle is in a high-speed road section or if the vehicle is in a non-high-speed road section and the current speed of the vehicle is greater than a first preset speed, the vehicle is not subjected to power output limitation, so that the vehicle keeps running at the current speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to the first preset speed, and a main driving seat of the vehicle is occupied, the vehicle is subjected to power output limitation, so that the highest driving speed of the vehicle is limited to the first preset speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to a second preset speed, and the main driving seat of the vehicle is unmanned, the vehicle is subjected to power output limitation, and the vehicle is prohibited from continuously driving; and inhibit the closing of the high voltage relay in the whole vehicle high voltage loop.
Referring to FIG. 2, a specific method for handling high voltage interlock faults on a vehicle outgoing line is provided, the method comprising in particular;
when the vehicle has a high-voltage interlock fault and the vehicle has not run through (i.e., the ignition key is currently in off-gear) this time the key cycle, the vehicle is not allowed to run by closing (i.e., opening) the high-voltage relay of the overall vehicle high-voltage circuit.
When the vehicle has a high-voltage interlocking fault and is in a non-high-speed road section, if the vehicle is in a drivable mode, the vehicle speed is less than 5km/h (second preset vehicle speed) and the main driving seat is unmanned, a high-voltage relay of a high-voltage loop of the whole vehicle is disconnected, and the vehicle is prohibited from running.
When the vehicle has a high-voltage interlocking failure and the vehicle is on a non-high-speed road section, if the vehicle is in a drivable mode, the vehicle speed is 60km/h or less (first preset vehicle speed), and the main driving seat is occupied, the maximum vehicle speed of the vehicle is limited to 60km/h (first preset vehicle speed).
When the vehicle is in a high-voltage interlock failure and the vehicle is in a high-speed section, or when the vehicle is in a non-high-speed section and the vehicle speed is greater than 60km/h (first preset vehicle speed), no power limitation is performed.
The method can reduce the risk of direct power interruption of high-voltage interlocking faults and improve the user satisfaction.
The invention also provides a high-voltage interlocking fault processing device of the pure electric automobile based on map navigation, which comprises the following steps:
the judging module is used for judging whether the current gear of the ignition key is in a non-OFF gear when the vehicle has a high-voltage interlocking fault;
the determining module is used for determining a current driving road section of the vehicle based on map navigation information provided by vehicle navigation if the current gear of the ignition key is in a non-OFF gear;
and the processing module is used for executing power output processing on the whole vehicle based on the current driving road section of the vehicle, the current speed of the vehicle and the main driving seat state.
The invention also provides a pure electric vehicle, which comprises the pure electric high-voltage interlocking fault processing device based on map navigation.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (4)
1. The high-voltage interlocking fault processing method for the pure electric vehicle based on map navigation is characterized by comprising the following steps of:
when the high-voltage interlocking fault occurs to the vehicle, judging whether the current gear of the ignition key is in a non-OFF gear or not;
if the current gear of the ignition key is in the non-OFF gear, determining a driving road section where the vehicle is currently located based on map navigation information provided by vehicle navigation;
performing power output processing on the whole vehicle based on a current driving road section of the vehicle, a current speed of the vehicle and a main driving seat state of the vehicle;
the step of performing the power output process for the entire vehicle based on the current traveling section of the vehicle, the current vehicle speed of the vehicle, and the main driving seat state of the vehicle includes:
if the vehicle is in a high-speed road section or if the vehicle is in a non-high-speed road section and the current speed of the vehicle is greater than a first preset speed, the vehicle is not subjected to power output limitation, so that the vehicle keeps running at the current speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to the first preset speed, and a main driving seat of the vehicle is occupied, the vehicle is subjected to power output limitation, so that the highest driving speed of the vehicle is limited to the first preset speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to a second preset speed, and the main driving seat of the vehicle is unmanned, the vehicle is subjected to power output limitation, and the vehicle is prohibited from continuously driving; and inhibit the closing of the high voltage relay in the whole vehicle high voltage loop.
2. The method according to claim 1, wherein the method further comprises:
and if the current gear of the ignition key is in the OFF gear, the high-voltage relay in the whole vehicle high-voltage loop is forbidden to be closed, and the vehicle is forbidden to run.
3. The utility model provides a pure electric vehicles high pressure interlocking fault handling device based on map navigation which characterized in that includes:
the judging module is used for judging whether the current gear of the ignition key is in a non-OFF gear when the vehicle has a high-voltage interlocking fault;
the determining module is used for determining a current driving road section of the vehicle based on map navigation information provided by vehicle navigation if the current gear of the ignition key is in a non-OFF gear;
the processing module is used for executing power output processing on the whole vehicle based on the current driving road section of the vehicle, the current speed of the vehicle and the state of the main driving seat;
the processing module is specifically used for:
if the vehicle is in a high-speed road section or if the vehicle is in a non-high-speed road section and the current speed of the vehicle is greater than a first preset speed, the vehicle is not subjected to power output limitation, so that the vehicle keeps running at the current speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to the first preset speed, and a main driving seat of the vehicle is occupied, the vehicle is subjected to power output limitation, so that the highest driving speed of the vehicle is limited to the first preset speed;
if the vehicle is in a non-high-speed road section, the current speed of the vehicle is smaller than or equal to a second preset speed, and the main driving seat of the vehicle is unmanned, the vehicle is subjected to power output limitation, and the vehicle is prohibited from continuously driving; and inhibit the closing of the high voltage relay in the whole vehicle high voltage loop.
4. The pure electric vehicle is characterized by comprising the map navigation-based pure electric vehicle high-voltage interlocking fault processing device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210063279.2A CN114379368B (en) | 2022-01-20 | 2022-01-20 | High-voltage interlocking fault processing method and device for pure electric vehicle and pure electric vehicle |
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| CN202210063279.2A CN114379368B (en) | 2022-01-20 | 2022-01-20 | High-voltage interlocking fault processing method and device for pure electric vehicle and pure electric vehicle |
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| CN114379368B true CN114379368B (en) | 2023-06-09 |
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Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |