CN115195472A - Mode switching method and device and automobile - Google Patents

Mode switching method and device and automobile Download PDF

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Publication number
CN115195472A
CN115195472A CN202110379912.4A CN202110379912A CN115195472A CN 115195472 A CN115195472 A CN 115195472A CN 202110379912 A CN202110379912 A CN 202110379912A CN 115195472 A CN115195472 A CN 115195472A
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Prior art keywords
automobile
low
voltage
condition
power supply
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CN202110379912.4A
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Chinese (zh)
Inventor
程琰
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Priority to CN202110379912.4A priority Critical patent/CN115195472A/en
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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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a mode switching method and device and an automobile, and relates to the field of vehicle control. The method comprises the following steps: receiving a signal generated when an automobile is in an ON gear; judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery; under the condition that the current state meets the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to keep the low-voltage power supply mode of the storage battery; and under the condition that the current state does not meet the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to carry out a high-voltage connection mode. According to the invention, the ON gear low-voltage calibration quantity is added into the automobile control logic, the automobile can be quickly kept in a low-voltage power supply mode of the storage battery without changing a hardware structure or a circuit structure, the working efficiency of workers is improved, and meanwhile, the problems of component looseness, poor contact and the like are avoided because the structure does not need to be changed.

Description

Mode switching method and device and automobile
Technical Field
The invention relates to the field of vehicle control, in particular to a mode switching method and device and an automobile.
Background
At present, many electric vehicles, especially pure electric passenger vehicles, adopt a strategy of performing high-voltage connection when the vehicles are in an ON gear, and aim to reduce the operation of drivers and avoid the condition of low-voltage storage battery feeding. However, during the development or debugging process of the electric automobile, many test items need to be performed in a mode that the storage battery provides low-voltage power supply.
However, at present, because the automobile is directly connected with high voltage when in the ON gear, the low-voltage power supply mode of the storage battery cannot be kept in the ON gear, and the automobile cannot be tested only in the low-voltage power supply mode.
Disclosure of Invention
In view of the above problems, the present invention provides a mode switching method, a mode switching device and a vehicle, which can switch whether the vehicle is in high-voltage connection or keeps a low-voltage power supply mode of a storage battery when the vehicle is in an ON gear.
A first aspect of an embodiment of the present invention provides a method for mode switching, where the method includes:
receiving a signal generated when an automobile is in an ON gear;
judging whether the current state of the automobile meets the condition of keeping a low-voltage power supply mode of a storage battery;
under the condition that the current state meets the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to keep the low-voltage power supply mode of the storage battery;
under the condition that the current state does not meet the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to carry out a high-voltage connection mode, wherein the high-voltage connection mode is a high-voltage power battery power supply mode;
wherein the condition for maintaining the low pressure mode at least comprises: and the low-voltage calibration quantity of the ON gear is a first preset value, and the low-voltage calibration quantity of the ON gear is used for determining whether the automobile is in a high-voltage connection mode or a storage battery low-voltage power supply mode.
Optionally, before determining whether the current state of the vehicle meets the condition for maintaining the low-voltage power supply mode of the storage battery, the method further comprises:
determining whether each controller of the automobile is activated or not, and starting to perform low-voltage self-test on each controller;
and when the controllers are activated and the controllers start to perform low-voltage self-test, executing the following steps: and judging whether the current state of the automobile meets the condition of keeping a low-voltage power supply mode of the storage battery.
Optionally, in a case where the current state satisfies a condition for maintaining the battery low-voltage power supply mode, controlling the vehicle to maintain the battery low-voltage power supply mode includes:
under the condition that the current state meets the condition of keeping a low-voltage power supply mode of a storage battery, judging whether the automobile is still in an ON gear currently;
under the condition that the automobile is still in an ON gear currently, controlling the automobile to keep a low-voltage power supply mode of a storage battery;
the method further comprises the following steps:
and under the condition that the automobile is not in the ON gear currently, controlling each controller to enter a dormant state.
Optionally, in a case that the current state is not satisfied, controlling the vehicle to enter a high-voltage connection mode includes:
and controlling the automobile to enter a high-voltage connection mode under the condition that the low-voltage standard quantity of the ON gear is a second preset value.
Optionally, the ON-gear low-pressure calibration amount is modified by a calibration tool, and defaults to the second preset value; before receiving a signal generated when the automobile is in an ON gear, the method further comprises the following steps:
under the condition that the automobile needs to be controlled to keep the low-pressure mode, the low-pressure calibration quantity of the ON gear is modified to be the first preset value through the calibration tool;
controlling the automobile to be powered on again after being powered off, and executing the following steps: and receiving a signal generated when the automobile is in the ON gear.
Optionally, the ON-gear low-voltage calibration amount is fixedly set to the second preset value after the automobile leaves a factory;
and the low-voltage calibration quantity of the ON gear is modified into the first preset value when the automobile is developed and debugged.
A second aspect of the embodiments of the present invention provides a mode switching apparatus, including:
the signal receiving device is used for receiving a signal generated when the automobile is in an ON gear;
the judgment condition module is used for judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery;
the low-voltage keeping module is used for controlling the automobile to keep the low-voltage power supply mode of the storage battery under the condition that the current state meets the condition of keeping the low-voltage power supply mode of the storage battery;
the high-voltage connection module is used for controlling the automobile to carry out a high-voltage connection mode under the condition that the current state does not meet the condition of maintaining the low-voltage power supply mode of the storage battery, wherein the high-voltage connection mode is a high-voltage power battery power supply mode;
wherein the conditions for maintaining the low pressure mode at least include: and the low-voltage calibration quantity of the ON gear is a first preset value, and the low-voltage calibration quantity of the ON gear is used for determining whether the automobile is in high-voltage connection or a low-voltage power supply mode of the storage battery is kept.
Optionally, the apparatus further comprises:
the activation self-checking module is used for determining whether each controller of the automobile is activated or not, and each controller starts to perform low-voltage self-checking;
and the execution module is used for executing the following steps under the condition that each controller is activated and starts to perform low-voltage self-test: and judging whether the current state of the automobile meets the condition of keeping a low-voltage power supply mode of the storage battery.
Optionally, the low voltage maintaining module is specifically configured to: under the condition that the current state meets the condition of keeping a low-voltage power supply mode of a storage battery, judging whether the automobile is still in an ON gear currently;
under the condition that the automobile is still in an ON gear currently, controlling the automobile to keep a low-voltage power supply mode of a storage battery;
the device further comprises:
and the dormancy module is used for controlling each controller to enter a dormant state under the condition that the automobile is not in an ON gear currently.
Optionally, in a case that the current state is not satisfied, the high-voltage connection module is specifically configured to:
and controlling the automobile to enter a high-voltage connection mode under the condition that the low-voltage standard quantity of the ON gear is a second preset value.
Optionally, the ON-gear low-pressure calibration amount is modified by a calibration tool, and defaults to the second preset value; the device further comprises:
the modification module is used for modifying the ON gear low-voltage calibration quantity to be the first preset value through the calibration tool under the condition that the automobile needs to be controlled to keep the low-voltage power supply mode of the storage battery;
and the power-on module is used for controlling the automobile to be powered on again after being powered off, and executing the following steps: and receiving a signal generated when the automobile is in an ON gear.
A third aspect of an embodiment of the present invention provides an automobile, including: a vehicle control unit;
the vehicle control unit is used for executing the method of any one of the first aspect.
The mode switching method comprises the steps of receiving a signal generated when an automobile is in an ON gear, and judging whether the current state of the automobile meets the condition of keeping a low-voltage power supply mode of a storage battery; the so-called ON-range low-voltage calibration quantity is used to determine whether the vehicle is connected at high voltage or in a battery low-voltage power supply mode. And under the condition that the low-voltage calibration quantity of the ON gear is a first preset value, controlling the automobile to keep a low-voltage power supply mode of the storage battery. Therefore, when the automobile is in an ON gear, the low-voltage power supply mode of the storage battery can be kept, so that the working personnel can conveniently develop and debug the automobile. And under the condition that the low-voltage standard quantity of the ON gear is not the first preset value, controlling the automobile to carry out a high-voltage connection mode, and directly supplying power to the automobile by using the high-voltage power battery.
According to the mode switching method, the ON gear low-voltage calibration quantity is added into the automobile control logic, whether the high-voltage connection or the storage battery low-voltage power supply mode is carried out when the automobile is in the ON gear is controlled according to the ON gear low-voltage calibration quantity, the mode can be switched randomly when the automobile is in the ON gear, when development or debugging is needed, a hardware structure or a circuit structure does not need to be changed, the automobile can be simply and quickly kept in the storage battery low-voltage power supply mode only by changing the ON gear low-voltage calibration quantity, and the working efficiency of workers is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart of a method of mode switching according to an embodiment of the present invention;
FIG. 2 is a flow chart of mode switching according to an embodiment of the present invention;
fig. 3 is a block diagram of a mode switching apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention, are only a few examples of the invention, are not intended to limit the invention.
The inventor finds that many test items are required to be performed in a mode that the storage battery provides low-voltage power supply in the process of developing or debugging the electric automobile at present. However, at present, because the automobile is in the ON gear and is directly connected with high voltage, the low-voltage power supply mode of the storage battery cannot be maintained in the ON gear, so that the automobile cannot be tested only in the low-voltage power supply mode.
The inventor further studies and finds that the current method for solving the problem is to change the hardware structure, such as: when the automobile is in an ON gear, the connection structure of the high-voltage power battery is changed to be in a fault state; or changing the circuit configuration, for example: the circuit structure of the DCDC is changed, so that the high-voltage power battery cannot supply power to the automobile.
However, the method is complex to implement, needs to be changed every time debugging is performed, and needs to restore the original structure after debugging is completed, so that the working efficiency of workers is low, the structure is changed too many times, and the problems of element loosening, poor contact and the like can be caused.
In view of the above problems, the inventors have creatively proposed the mode switching method of the present invention, and the method of the present invention will be described in detail below.
Referring to fig. 1, a flowchart of a mode switching method according to an embodiment of the present invention is shown, where the mode switching method includes:
step 101: and receiving a signal generated when the automobile is in an ON gear.
In the embodiment of the invention, a signal generated when the automobile is in the ON gear can be received by a Vehicle Control Unit (VCU). Generally, a jack type key is screwed to an 'ON' gear, or a switch started by one key is pressed under the condition that a clutch is not stepped ON, so that an automobile can be in the ON gear, a signal is generated when the automobile is in the ON gear and is sent to a VCU, and the VCU receives the signal and then carries out subsequent operation according to a set flow.
Step 102: and judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery.
In the embodiment of the invention, after the VCU receives the signal generated when the automobile is in the ON gear, the VCU starts to judge whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery. The conditions for maintaining the low pressure mode include at least: the ON-gear low-voltage calibration amount is a first preset value, and the ON-gear low-voltage calibration amount is used for determining whether the automobile is connected in a high-voltage mode or a storage battery low-voltage power supply mode is maintained.
In the embodiment of the invention, an ON gear low-pressure calibration amount is added in the control logic of the automobile, and the state of the automobile is controlled according to the value of the ON gear low-pressure calibration amount and other conditions. And other conditions include: whether the high-voltage relay is disconnected or not, whether low-voltage self-checking of each controller of the automobile is completed or not, and whether a mode variable of the whole automobile is in a running mode or not.
The high-voltage relay is connected with the high-voltage power battery, when the high-voltage relay is closed, the point of the high-voltage power battery is directly provided for the automobile, and the situation that the automobile is not allowed to appear when the automobile is in an ON gear is avoided, so that if the VCU judges that the high-voltage relay is not disconnected, the automobile can be directly judged to be in a fault state, an alarm can be sent out, the automobile is forbidden to enter high-voltage connection, and the automobile is forbidden to keep a storage battery low-voltage power supply mode. Whether the whole vehicle mode variable is the driving mode means whether the vehicle is in an ON gear, if the vehicle is in the ON gear, the whole vehicle mode is changed into the driving mode, and if the vehicle is not in the ON gear, the whole vehicle mode is changed into the non-driving mode.
Generally, after an automobile is in an ON gear, each controller needs to be activated and perform low voltage self-test, that is, before judging whether the current state of the automobile meets the condition of maintaining a low voltage power supply mode of a storage battery, each controller of the automobile needs to be activated and starts to perform low voltage self-test, and the method comprises the following steps:
step S1: it is determined whether each controller of the vehicle is activated and each controller initiates a low voltage self test.
In the embodiment of the invention, after a jack type key is screwed to an 'ON' gear or a switch started by one key is pressed under the condition of not stepping ON a clutch, the electric power storage of the automobile can provide low voltage electricity for each controller (such as a battery management system BMS, an Electronic Stability Program (ESP) of an automobile body and the like) so that each controller is activated, each controller can carry out self-checking respectively firstly after being activated, if the self-checking is finished, each controller is normal, if the self-checking is not finished, one or more controllers are abnormal, the automobile is considered to be in a fault state under the condition, an alarm is given, the automobile is forbidden to enter high-voltage connection, and the automobile is forbidden to keep in a low-voltage power supply mode of the storage battery.
And step S3: under the condition that each controller is activated and each controller starts to carry out low-voltage self-test, the following steps are carried out: and judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery.
In the embodiment of the present invention, each controller of the vehicle is activated and starts to perform low voltage self-test, and each controller executes its own low voltage self-test program, and in this case, the VCU executes the following steps: and judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery.
Step 103: and under the condition that the current state meets the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to keep the low-voltage power supply mode of the storage battery.
In the embodiment of the invention, the VCU judges whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery, namely, the VCU judges whether a high-voltage relay of the automobile is disconnected, whether each controller completes low-voltage self-detection, whether a mode variable of the whole automobile is a driving mode and whether a low-voltage standard quantity of an ON gear is a first preset value, and controls the automobile to keep the low-voltage power supply mode of the storage battery under the conditions that the high-voltage relay of the automobile is disconnected, each controller completes low-voltage self-detection, a mode variable of the whole automobile is a driving mode and a low-voltage standard quantity of the ON gear is a first preset value, and the storage battery is used for providing low voltage for the automobile without high-voltage connection. It can be understood that, as described above, if the VCU determines that the high-voltage relay of the automobile is not disconnected or each controller does not complete the low-voltage self-test, it is directly determined that the automobile is in a fault state, and the VCU sends an alarm to prompt, and simultaneously prohibits the automobile from entering a high-voltage connection and also prohibits the automobile from maintaining a low-voltage power supply mode of the storage battery.
In the embodiment of the invention, under the condition that the current state of the VCU meets the condition of keeping the low-voltage power supply mode of the storage battery, whether the automobile is still in the ON gear or not is judged at first. This is done because there may be situations where the vehicle is initially in the ON range, but then the vehicle is not in the ON range. For example: after a user screws a key to an 'ON' gear, the self-checking of each controller is completed, the high-voltage relay is disconnected, the low-voltage calibration quantity of the 'ON' gear is a first preset value, the VCU should control the automobile to keep a low-voltage power supply mode of the storage battery, but the user does not need to use the automobile due to other factors, and screws the key to an 'OFF' gear, so that the automobile is not in the 'ON' gear. Therefore, the VCU needs to determine whether the vehicle is currently in the ON gear when the current state satisfies the condition of maintaining the low-voltage power supply mode of the storage battery.
Under the condition that the automobile is still in an ON gear currently, the VCU controls the automobile to keep a low-voltage power supply mode of the storage battery; under the condition that the automobile is not in the ON gear currently, the VCU controls each controller to enter a dormant state. Namely, if the automobile is still in the ON gear, the VCU controls the automobile to keep the low-voltage power supply mode of the storage battery; if the automobile is in an OFF gear, the VCU controls each controller to enter a dormant state, which is equivalent to powering OFF the whole automobile.
Step 104: and under the condition that the current state does not meet the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to carry out a high-voltage connection mode, wherein the high-voltage connection mode is a high-voltage power battery power supply mode.
In the embodiment of the invention, under the conditions that the high-voltage relay of the automobile is disconnected, the controllers complete low-voltage self-checking, the variable of the whole automobile mode is the driving mode and the low-voltage standard quantity of the ON gear is a second preset value, the automobile is controlled to be in a high-voltage connection mode, and the high-voltage power battery is used for supplying power to the automobile. Similarly, if the VCU judges that the high-voltage relay of the automobile is not disconnected and each controller does not finish low-voltage self-checking, the VCU directly judges that the automobile is in a fault state, and the VCU gives an alarm to prompt, prohibits the automobile from entering high-voltage connection and also prohibits the automobile from keeping a low-voltage power supply mode of the storage battery.
In the embodiment of the present invention, the first preset value and the second preset value may be set by themselves, for example: setting the first preset value to be 1 and the second preset value to be 0, and controlling the automobile to keep a low-voltage power supply mode of the storage battery under the conditions that a high-voltage relay of the automobile is disconnected, each controller completes low-voltage self-detection, the whole automobile mode variable is a driving mode and the ON gear low-voltage calibration quantity is 1; and under the conditions that a high-voltage relay of the automobile is disconnected, each controller completes low-voltage self-checking, the whole automobile mode variable is a driving mode and the ON gear low-voltage calibration quantity is 0, controlling the automobile to carry out a high-voltage connection mode.
In the embodiment of the invention, the ON-gear low-voltage calibration amount can be modified by a calibration tool (for example, INCA), and the default is a second preset value, that is, the default is that the vehicle enters the high-voltage connection mode when the vehicle is in the ON gear, because in general, the condition that the storage battery is easily fed when the vehicle is in the ON gear and the storage battery low-voltage power supply mode is maintained, especially when a user stays in the ON gear for a long time when the vehicle is used, in order to avoid the condition, the ON-gear low-voltage calibration amount needs to be fixedly set to the second preset value after the vehicle leaves a factory. And when the automobile needs to be developed or debugged, the low-voltage calibration quantity of the ON gear is modified into a first preset value through a calibration tool. After the low-voltage standard quantity of the ON gear is modified into a first preset value, the VCU needs to control the automobile to be powered OFF and then powered ON again, namely, the key is screwed from the 'ON' gear to the 'OFF' gear and then to the 'ON' gear, and then the VCU executes the following steps: and receiving a signal generated when the automobile is in an ON gear.
The mode switching method of the embodiment of the present invention is combined with the mode switching flowchart shown in fig. 2, wherein one of the preferred flows is:
and receiving a signal that the automobile is in an ON gear, determining that each controller is activated and starts to perform low-voltage self-test, and under the condition that each controller is activated and starts to perform low-voltage self-test, judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery by the VCU. As described above, the conditions for maintaining the low-voltage battery power supply mode are: the high-voltage relay of the automobile is disconnected, each controller completes low-voltage self-checking, the whole automobile mode variable is a driving mode, and the ON gear low-voltage calibration quantity is a first preset value.
If the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery, the VCU judges whether the automobile is still in an ON gear currently, and if the automobile is still in the ON gear currently, the VCU controls the automobile to keep the low-voltage power supply mode of the storage battery; and if the automobile is not in the ON gear currently, the VCU controls each controller to enter a dormant state.
If the current state of the automobile does not meet the condition of keeping the low-voltage power supply mode of the storage battery, the VCU controls the automobile to start high-voltage connection, and the method for the automobile to perform the high-voltage connection can refer to the existing high-voltage connection method.
In summary, in the mode switching method according to the embodiment of the invention, the ON-gear low-voltage calibration amount is added to the automobile control logic, and whether the high-voltage connection is performed or the low-voltage power supply mode of the storage battery is maintained when the automobile is in the ON gear is controlled according to the ON-gear low-voltage calibration amount. The whole process does not need to change a hardware structure or a circuit structure, the automobile can be quickly kept in a low-voltage power supply mode, the working efficiency of workers is improved, and meanwhile, the problems of component looseness, poor contact and the like are avoided because the structure does not need to be changed.
Referring to fig. 3, a block diagram of a mode switching apparatus according to an embodiment of the present invention is shown, where the mode switching apparatus includes:
the signal receiving device 310 is used for receiving a signal generated when the automobile is in an ON gear;
a judgment condition module 320, configured to judge whether a current state of the vehicle meets a condition for maintaining a low-voltage power supply mode of a storage battery;
a low voltage keeping module 330, configured to control the vehicle to keep the battery low voltage power supply mode when the current state satisfies a condition of keeping the battery low voltage power supply mode;
the high-voltage connection module 340 is configured to control the automobile to perform a high-voltage connection mode under the condition that the current state does not satisfy the condition of maintaining the low-voltage power supply mode of the storage battery, where the high-voltage connection mode is a high-voltage power battery power supply mode;
wherein the conditions for maintaining the low pressure mode at least include: and the low-voltage calibration quantity of the ON gear is a first preset value, and the low-voltage calibration quantity of the ON gear is used for determining whether the automobile is in high-voltage connection or a low-voltage power supply mode of the storage battery is kept.
Optionally, the apparatus further comprises:
the activation self-checking module is used for determining whether each controller of the automobile is activated or not, and each controller starts to perform low-voltage self-checking;
and the execution module is used for executing the following steps under the condition that each controller is activated and starts to perform low-voltage self-test: and judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery.
Optionally, the low voltage maintaining module is specifically configured to: under the condition that the current state meets the condition of keeping a low-voltage power supply mode of a storage battery, judging whether the automobile is still in an ON gear currently;
under the condition that the automobile is still in an ON gear currently, controlling the automobile to keep a low-voltage power supply mode of a storage battery;
the device further comprises:
and the dormancy module is used for controlling each controller to enter a dormant state under the condition that the automobile is not in an ON gear currently.
Optionally, in a case that the current state is not satisfied, the high-voltage connection module is specifically configured to:
and controlling the automobile to enter a high-voltage connection mode under the condition that the low-voltage standard quantity of the ON gear is a second preset value.
Optionally, the ON-gear low-pressure calibration amount is modified by a calibration tool, and defaults to the second preset value; the device further comprises:
the modification module is used for modifying the ON gear low-voltage calibration quantity to be the first preset value through the calibration tool under the condition that the automobile needs to be controlled to keep the low-voltage power supply mode of the storage battery;
and the power-on module is used for controlling the automobile to be powered on again after being powered off, and the following steps are executed: and receiving a signal generated when the automobile is in the ON gear.
Based on the above mode switching method, an embodiment of the present invention further provides an automobile, where the automobile includes: a vehicle control unit;
the vehicle control unit is used for executing the method in the steps 101 to 104.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or article that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or article.
The embodiments of the present invention have been described in connection with the accompanying drawings, and the principles and embodiments of the present invention are described herein using specific examples, which are provided only to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A method of mode switching, the method comprising:
receiving a signal generated when an automobile is in an ON gear;
judging whether the current state of the automobile meets the condition of keeping a low-voltage power supply mode of a storage battery;
under the condition that the current state meets the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to keep the low-voltage power supply mode of the storage battery;
under the condition that the current state does not meet the condition of keeping the low-voltage power supply mode of the storage battery, controlling the automobile to carry out a high-voltage connection mode, wherein the high-voltage connection mode is a high-voltage power battery power supply mode;
wherein the conditions for maintaining the low pressure mode at least include: and the low-voltage calibration quantity of the ON gear is a first preset value, and the low-voltage calibration quantity of the ON gear is used for determining whether the automobile is in high-voltage connection or a low-voltage power supply mode of the storage battery is kept.
2. The method of claim 1, further comprising, prior to determining whether the current state of the vehicle satisfies a condition for maintaining a battery low-voltage power supply mode:
determining whether each controller of the automobile is activated or not, and starting to perform low-voltage self-test on each controller;
and when the controllers are activated and the controllers start to perform low-voltage self-test, executing the following steps: and judging whether the current state of the automobile meets the condition of keeping a low-voltage power supply mode of the storage battery.
3. The method of claim 2, wherein controlling the vehicle to maintain the battery low-voltage power mode in the event that the current state satisfies a condition for maintaining the battery low-voltage power mode comprises:
under the condition that the current state meets the condition of keeping a low-voltage power supply mode of a storage battery, judging whether the automobile is still in an ON gear currently;
under the condition that the automobile is still in an ON gear currently, controlling the automobile to keep a storage battery low-voltage power supply mode;
the method further comprises the following steps:
and under the condition that the automobile is not in the ON gear currently, controlling each controller to enter a dormant state.
4. The method of claim 1, wherein controlling the vehicle into a high-voltage connected mode in the event that the current state is not satisfied comprises:
and controlling the automobile to enter a high-voltage connection mode under the condition that the low-voltage standard quantity of the ON gear is a second preset value.
5. The method of claim 4, wherein the ON gear low pressure calibration amount is modified by a calibration tool, which defaults to the second preset value; before receiving a signal generated when the automobile is in an ON gear, the method further comprises the following steps:
under the condition that the automobile needs to be controlled to keep the low-voltage power supply mode of the storage battery, the ON gear low-voltage calibration quantity is modified to be the first preset value through the calibration tool;
controlling the automobile to be powered on again after being powered off, and executing the following steps: and receiving a signal generated when the automobile is in an ON gear.
6. The method according to claim 4, wherein the ON gear low voltage calibration amount is fixedly set to the second preset value after the automobile leaves a factory;
and the low-voltage calibration quantity of the ON gear is modified into the first preset value when the automobile is developed and debugged.
7. An apparatus for mode switching, the apparatus comprising:
the signal receiving device is used for receiving a signal generated when the automobile is in an ON gear;
the judgment condition module is used for judging whether the current state of the automobile meets the condition of keeping a low-voltage power supply mode of a storage battery;
the low-voltage keeping module is used for controlling the automobile to keep the low-voltage power supply mode of the storage battery under the condition that the current state meets the condition of keeping the low-voltage power supply mode of the storage battery;
the high-voltage connection module is used for controlling the automobile to carry out a high-voltage connection mode under the condition that the current state does not meet the condition of keeping the low-voltage power supply mode of the storage battery, wherein the high-voltage connection mode is a high-voltage power battery power supply mode;
wherein the condition for maintaining the low pressure mode at least comprises: and the low-voltage calibration quantity of the ON gear is a first preset value, and the low-voltage calibration quantity of the ON gear is used for determining whether the automobile is in high-voltage connection or a low-voltage power supply mode of the storage battery is kept.
8. The apparatus of claim 7, further comprising:
the activation self-checking module is used for determining whether each controller of the automobile is activated or not, and each controller starts to perform low-voltage self-checking;
and the execution module is used for executing the following steps under the condition that each controller is activated and starts to perform low-voltage self-test: and judging whether the current state of the automobile meets the condition of keeping the low-voltage power supply mode of the storage battery.
9. The apparatus of claim 8, wherein the low pressure maintenance module is specifically configured to: under the condition that the current state meets the condition of keeping a low-voltage power supply mode of a storage battery, judging whether the automobile is still in an ON gear currently;
under the condition that the automobile is still in an ON gear currently, controlling the automobile to keep a storage battery low-voltage power supply mode;
the device further comprises:
and the dormancy module is used for controlling each controller to enter a dormant state under the condition that the automobile is not in an ON gear currently.
10. An automobile, characterized in that the automobile comprises: a vehicle control unit;
the vehicle control unit is used for executing the method of any one of claims 1-5.
CN202110379912.4A 2021-04-08 2021-04-08 Mode switching method and device and automobile Pending CN115195472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110379912.4A CN115195472A (en) 2021-04-08 2021-04-08 Mode switching method and device and automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110379912.4A CN115195472A (en) 2021-04-08 2021-04-08 Mode switching method and device and automobile

Publications (1)

Publication Number Publication Date
CN115195472A true CN115195472A (en) 2022-10-18

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CN202110379912.4A Pending CN115195472A (en) 2021-04-08 2021-04-08 Mode switching method and device and automobile

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113377658A (en) * 2021-06-21 2021-09-10 北京车和家信息技术有限公司 Vehicle controller debugging method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113377658A (en) * 2021-06-21 2021-09-10 北京车和家信息技术有限公司 Vehicle controller debugging method and device
CN113377658B (en) * 2021-06-21 2024-04-16 北京车和家信息技术有限公司 Vehicle controller debugging method and device

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