CN-121989716-A - Charging method, device, equipment and medium for new energy vehicle

CN121989716ACN 121989716 ACN121989716 ACN 121989716ACN-121989716-A

Abstract

The application discloses a charging method, a charging device, charging equipment and charging medium for a new energy vehicle, and belongs to the technical field of vehicles. The method comprises the steps of obtaining current humidity and accumulated water detection signals in a charging port if a vehicle charging port cover is detected to be in an open state, determining the risk level of insulation failure of the charging port according to the current humidity and the accumulated water detection signals, sending a prompt for prohibiting charging and determining a target drying strategy of the charging port corresponding to the risk level if the risk level is greater than a preset level threshold, and drying the charging port based on the target drying strategy until the real-time humidity in the charging port is smaller than a preset target humidity threshold, and sending a prompt for allowing charging. According to the method, when the risk level of insulation failure of the charging port is high, the insulation of the charging port is kept in a normal state through a drying strategy, and then reminding of charging permission is carried out, so that the safety of charging is improved.

Inventors

XIE JUN
ZHANG PINGPING
Dong Douxing

Assignees

东风汽车集团股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260128

Claims (10)

1. A method of charging a new energy vehicle, the method comprising: If the vehicle charging port cover is detected to be in an open state, acquiring current humidity and accumulated water detection signals in the charging port; Determining the risk level of insulation failure of the charging port according to the current humidity and the accumulated water detection signal; if the risk level is greater than a preset level threshold, sending a prompt for prohibiting charging, and determining a target drying strategy of a charging port corresponding to the risk level; And drying the charging port based on the target drying strategy until the real-time humidity in the charging port is smaller than a preset target humidity threshold value, and then sending a prompt for allowing charging.
2. The charging method of a new energy vehicle according to claim 1, wherein the risk level includes a low risk, a medium risk, a high risk and an extremely high risk, and the determining the target drying policy of the charging port corresponding to the risk level if the risk level is greater than a preset level threshold includes: if the risk level is the risk in the charging port, determining a target drying strategy of the charging port to purge the bottom of the charging port; If the risk level is the high risk, determining a target drying strategy of the charging port to purge the bottom of the charging port and heat the charging port; And if the risk level is the extremely high risk, determining that the target drying strategy of the charging port is that after the drainage device is started to drain accumulated water in the charging port, purging the bottom of the charging port and heating the charging port.
3. The method of charging a new energy vehicle of claim 2, wherein determining that the target drying strategy of the charging port is to purge air to the charging port bottom if the risk level is the medium risk comprises: and if the risk level is the risk, determining that the target drying measure of the charging port is to purge the bottom of the charging port at a preset purging frequency.
4. The method of claim 3, wherein determining a target drying strategy for the charging port to purge the charging port bottom and heat the charging port if the risk level is the high risk comprises: And if the risk level is the high risk, determining that the target drying measure of the charging port is to purge the bottom of the charging port and heat the charging port in a continuous purging mode.
5. The charging method of a new energy vehicle according to claim 2, wherein the power supply mode of the water discharge device is determined by: acquiring the residual electric quantity of a high-voltage battery of the vehicle; if the residual electric quantity is larger than a preset electric quantity threshold value, supplying power to the drainage device through the high-voltage battery; and if the residual electric quantity is smaller than or equal to the electric quantity threshold value, supplying power to the drainage device through a low-voltage storage battery of the vehicle.
6. The charging method of a new energy vehicle according to claim 1, wherein the risk level includes a low risk, a medium risk, a high risk and an extremely high risk, the water accumulation detection signal includes a water accumulation signal and a water accumulation-free signal, and the determining the risk level of the charging port insulation failure according to the current humidity and the water accumulation detection signal includes: If the ponding detection signal is the ponding signal, determining that the risk level of the insulation failure of the charging port is the extremely high risk; If the ponding detection signal is the ponding-free signal and the current humidity is larger than a preset first humidity threshold value, determining that the risk level of the insulation failure of the charging port is the high risk; If the ponding detection signal is the ponding-free signal and the current humidity is larger than a preset second humidity threshold value and smaller than or equal to the first humidity threshold value, determining that the risk level of the insulation failure of the charging port is the medium risk; And if the ponding detection signal is the ponding-free signal and the current humidity is smaller than or equal to the second humidity threshold, determining that the risk level of the insulation failure of the charging port is the low risk.
7. The charging method of a new energy vehicle according to claim 1, wherein after determining the risk level of insulation failure of the charging port based on the humidity and the water accumulation detection signal, the method further comprises: And sending the risk grade to a charging pile corresponding to the vehicle, so that the charging pile determines the working state of the charging gun according to the risk grade.
8. A charging device for a new energy vehicle, the device comprising: The acquisition module is used for acquiring current humidity and accumulated water detection signals in the charging port if the vehicle charging port cover is detected to be in an open state; the first determining module is used for determining the risk level of the insulation failure of the charging port according to the current humidity and the accumulated water detection signal; the second determining module is used for sending a prompt for prohibiting charging if the risk level is greater than a preset level threshold value and determining a target drying strategy of a charging port corresponding to the risk level; and the drying module is used for drying the charging port based on the target drying strategy until the real-time humidity in the charging port is smaller than a preset target humidity threshold value, and then sending a prompt for allowing charging.
9. An electronic device comprising a memory and a processor, the memory and the processor being communicatively coupled to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the method of any of claims 1-7.
10. A computer readable storage medium having stored thereon computer instructions for causing the computer to perform the method of any one of claims 1-7.

Description

Charging method, device, equipment and medium for new energy vehicle Technical Field The present application relates to the field of vehicle technologies, and in particular, to a charging method, apparatus, device, and medium for a new energy vehicle. Background As new energy vehicles become more popular, the charging experience and safety of the new energy vehicles can affect each user. Therefore, when the new energy vehicle is charged, the vehicle and the charging pile can perform strict insulation self-inspection. Once the insulation resistance is detected to be lower than the safety threshold, the risk of electric leakage is judged to exist, the charging process is immediately interrupted, errors are reported, and the charging cannot be performed. In the prior art, when charging under the environment of raining, can control rain shielding mechanism and open, avoid the rainwater to get into the mouth that charges, cause insulation resistance to be less than safe threshold value, influence the normal charging of vehicle. However, the shielding capability of the rain shielding mechanism is limited, rainwater can possibly enter the charging port, and under the condition, the vehicle can be ensured to continue to be charged normally, so that the technical problem to be solved is urgent at present. Disclosure of Invention In view of the above problems, the present application has been made to provide a charging method, apparatus, device, and medium for a new energy vehicle, which can detect a risk level of insulation failure of a charging port during a process of preparing for charging or having been charged, and when the risk level is high, perform a charge prohibition reminder, perform a drying process on the charging port, and perform a charge permission reminder after the humidity of the charging port is adjusted to be low through the drying process, thereby improving the safety of charging the vehicle. In a first aspect, the present application provides a charging method for a new energy vehicle, the method comprising: If the vehicle charging port cover is detected to be in an open state, acquiring current humidity and accumulated water detection signals in the charging port; Determining the risk level of insulation failure of the charging port according to the current humidity and the accumulated water detection signal; if the risk level is greater than a preset level threshold, sending a prompt for prohibiting charging, and determining a target drying strategy of a charging port corresponding to the risk level; And drying the charging port based on the target drying strategy until the real-time humidity in the charging port is smaller than a preset target humidity threshold value, and then sending a prompt for allowing charging. Optionally, the risk level includes low risk, medium risk, high risk and extremely high risk, and if the risk level is greater than a preset level threshold, determining a target drying policy of the charging port corresponding to the risk level includes: if the risk level is the risk in the charging port, determining a target drying strategy of the charging port to purge the bottom of the charging port; If the risk level is the high risk, determining a target drying strategy of the charging port to purge the bottom of the charging port and heat the charging port; And if the risk level is the extremely high risk, determining that the target drying strategy of the charging port is that after the drainage device is started to drain accumulated water in the charging port, purging the bottom of the charging port and heating the charging port. Optionally, if the risk level is the risk of air, determining that the target drying policy of the charging port is to purge air to the bottom of the charging port includes: and if the risk level is the risk, determining that the target drying measure of the charging port is to purge the bottom of the charging port at a preset purging frequency. Optionally, if the risk level is the high risk, determining the target drying policy of the charging port to purge the bottom of the charging port and heat the charging port includes: And if the risk level is the high risk, determining that the target drying measure of the charging port is to purge the bottom of the charging port and heat the charging port in a continuous purging mode. Optionally, the power supply mode of the drainage device is determined by the following modes: acquiring the residual electric quantity of a high-voltage battery of the vehicle; if the residual electric quantity is larger than a preset electric quantity threshold value, supplying power to the drainage device through the high-voltage battery; and if the residual electric quantity is smaller than or equal to the electric quantity threshold value, supplying power to the drainage device through a low-voltage storage battery of the vehicle. Optionally, the risk level includes low risk, well risk, high risk and the high risk t