CN113759183B

CN113759183B - Self-checking method, device and computer storage medium

Info

Publication number: CN113759183B
Application number: CN202010491079.8A
Authority: CN
Inventors: 王圣慧; 宋正宇; 王石峰
Original assignee: Zhejiang Anji Zhidian Holding Co Ltd
Current assignee: Zhejiang Anji Zhidian Holding Co Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2024-05-28
Anticipated expiration: 2040-06-02
Also published as: CN113759183A

Abstract

The embodiment of the invention provides a self-checking method, a self-checking device and a computer storage medium. A method for effectively detecting a charging failure at the time of charging in time is provided. The self-checking method is applied to a self-checking device, wherein the self-checking device is provided with a BMS module, and the method comprises the following steps: when the charging equipment to be detected is in an idle state, controlling the BMS module to be connected with the charging equipment, and detecting the charging fault of the charging equipment aiming at the BMS module to obtain a detection result; and if the detection result shows that the charging equipment has the charging fault, recording fault information.

Description

Self-checking method, device and computer storage medium

Technical Field

The invention relates to the technical field of new energy automobile charging, in particular to a self-checking method, a self-checking device and a computer storage medium.

Background

Along with the increasing environmental awareness of users, many vehicles, such as electric vehicles, gradually become people's tools of riding instead of walk, and the electric vehicles use vehicle-mounted power supply as power and adopt motor to drive wheels to run, thereby replacing fuel drive to meet the environmental protection requirement.

In the prior art, an electric automobile needs to travel to a position of a charging device for charging, and if the charging device fails, the electric automobile needs to travel to a position of a new charging device for charging again until a charging device capable of charging the electric automobile is found. For an electric vehicle passing through a long distance, how to ensure that charging equipment which is provided for an electric vehicle user effectively and can ensure that charging is completed is important under the condition that the residual electric quantity of the electric vehicle is insufficient to support multiple searching of charging equipment. In order to provide reliable charging service for a charging vehicle, fault detection can be performed on the charging equipment regularly so as to timely repair the charging equipment after faults are found in time, and accordingly fault-free charging equipment is provided for the charging vehicle.

Disclosure of Invention

The embodiment of the invention provides a self-checking method, a self-checking device and a computer storage medium, which are used for providing a method for timely and effectively detecting a charging fault during charging.

In a first aspect, an embodiment of the present invention provides a self-checking method, which is applied to a self-checking device, where the self-checking device is provided with a BMS module, and the method includes:

when the charging equipment to be detected is in an idle state, controlling the BMS module to be connected with the charging equipment, and detecting the charging fault of the charging equipment aiming at the BMS module to obtain a detection result;

And if the detection result shows that the charging equipment has the charging fault, recording fault information.

Optionally, the detecting the charging fault of the charging device with respect to the BMS module, to obtain a detection result, includes:

Detecting the low-voltage power supply fault of the charging equipment to obtain a first detection result, wherein the method comprises the following steps: sending an auxiliary relay actuation instruction to the charging equipment, so that the charging equipment responds to the auxiliary relay actuation instruction, a low-voltage auxiliary power supply and the BMS module form a communicated loop, detecting the output voltage of the low-voltage auxiliary power supply, judging whether the output power supply is a preset voltage, if not, indicating that the charging equipment has a low-voltage power supply fault, and the low-voltage power supply fault is that the charging equipment cannot provide wake-up voltage for the BMS module.

If the first detection result indicates that the charging equipment does not have the low-voltage power supply fault, BMS communication fault detection is performed on the charging equipment, and a second detection result is obtained, wherein the second detection result comprises the following steps: sending a BMS communication instruction to the charging equipment so that the charging equipment starts a communication flow with the BMS module; and judging whether the charging equipment can normally communicate with the BMS module, and if not, indicating that the charging equipment has the BMS communication fault by the second detection result.

detecting the insulation fault of the charging equipment to obtain a third detection result, wherein the method comprises the following steps: and sending an insulation fault detection instruction to the charging equipment, so that the charging equipment starts an insulation detection circuit to detect the insulation resistance of the charging equipment, judging whether the insulation resistance is smaller than a preset resistance, and if so, indicating that the insulation fault exists in the charging equipment by the third detection result.

Detecting the front end fault of the contactor of the charging equipment to obtain a fourth detection result, wherein the method comprises the following steps: and sending a front-end fault detection instruction to the charging equipment so that the charging equipment detects the front-end voltage of the contactor, judging whether the front-end voltage is larger than a first preset voltage, and if not, indicating that the front-end fault of the contactor exists in the charging equipment by the fourth detection result.

if the fourth detection result indicates that the front end failure of the contactor does not exist in the charging equipment, performing the rear end failure detection of the contactor on the charging equipment to obtain a fifth detection result, wherein the fifth detection result comprises the following steps: and sending a rear-end fault detection instruction to the charging equipment, so that the charging equipment detects the rear-end voltage after the contactor is adhered, judging whether the rear-end voltage is larger than a second preset voltage, and if not, indicating that the rear-end fault of the contactor exists in the charging equipment by a fifth detection result.

And if the fifth detection result indicates that the charging equipment does not have the rear end failure of the contactor, performing adhesion failure detection on the charging equipment to obtain a sixth detection result, wherein the sixth detection result comprises the following steps: and sending an adhesion fault detection instruction to the charging equipment, so that the charging equipment detects the disconnection rear-end voltage of the contactor after sending a disconnection instruction to the contactor, judges whether the disconnection rear-end voltage is greater than 0, and if so, the sixth detection result indicates that the contactor adhesion fault exists in the charging equipment.

performing bleeder circuit fault detection on the charging equipment to obtain a seventh detection result, including: and sending a bleeder circuit fault detection instruction to the charging equipment so that the charging equipment closes the bleeder circuit, detecting the output voltage of the charging equipment after closing the preset time, judging whether the output voltage is greater than 0, and if so, indicating that the bleeder circuit fault exists in the charging equipment by the seventh detection result.

Optionally, before detecting the charging failure of the charging device for the BMS module, and obtaining a detection result, the method further includes:

transmitting a state detection instruction to the charging equipment;

And receiving state information fed back by the charging equipment, and determining whether the charging equipment is in an idle state or not based on the state information.

Optionally, before the low-voltage power supply fault detection is performed on the charging device to obtain the first detection result, the method further includes:

Optionally, after the recording of the fault information, the method further includes:

And sending the recorded fault information to a target object so that the target object outputs the fault information.

Optionally, the target object includes any one or more combinations of the charging device, a fault management server corresponding to the self-checking device, a target user, an output module of the self-checking device, and a cloud pile server corresponding to the charging device.

In a second aspect, an embodiment of the present invention provides a self-checking device provided with a BMS module, the device including:

The fault detection unit is used for controlling the BMS module to be connected with the charging equipment when the charging equipment to be detected is in an idle state, detecting the charging fault of the charging equipment aiming at the BMS module, and obtaining a detection result;

and the recording unit is used for recording fault information if the detection result shows that the charging equipment has the charging fault.

Optionally, the fault detection unit is specifically configured to:

Optionally, the fault detection unit is further configured to:

transmitting a state detection instruction to the charging equipment;

Optionally, the fault detection unit is further configured to:

Optionally, the device further includes a sending unit, where the sending unit is specifically configured to:

In a third aspect, an embodiment of the present invention provides a self-checking device provided with a BMS module, the device comprising a processor and a memory, the processor being configured to implement the steps of the self-checking method described in the previous embodiment of the first aspect when executing a computer program stored in the memory.

In a fourth aspect, embodiments of the present invention provide a computer storage medium storing computer software instructions for use with the above-described charging self-test device, comprising steps for performing the self-test method as described in the foregoing embodiments of the first aspect.

The above technical solutions in the embodiments of the present application at least have one or more of the following technical effects:

In the technical scheme of the embodiment of the invention, the BMS module is arranged in the self-checking device, and can simulate the charging of the automobile and the charging equipment, so when the charging equipment to be detected is determined to be in an idle state, the BMS module in the self-checking device is controlled to be connected with the charging equipment, and the charging equipment performs charging on the BMS module, so that the charging fault can be detected, a detection result is obtained, and if the detection result shows that the charging equipment has the charging fault, the fault information is recorded. After the vehicle does not need to travel to the position of the charging equipment, the charging equipment can trigger to detect the charging fault when actually charging the vehicle, and if the charging equipment has the charging fault, the charging equipment cannot charge the vehicle, so that the residual electric quantity of the vehicle is wasted. The scheme of the embodiment of the invention can detect the charging fault existing in the charging process of the charging equipment in advance when the charging equipment is in an idle state, and further, the fault declaration can be timely carried out and timely overhauled as the charging fault can be timely detected, so that reliable charging service is provided for users.

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 designate like parts throughout the figures. In the drawings:

FIG. 1 is a flow chart of a self-checking method according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a self-checking device according to a second embodiment of the present invention;

Fig. 3 is a schematic diagram of a self-checking device according to a third embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a self-checking method, a self-checking device and a computer storage medium, which are used for providing a method for timely and effectively detecting a charging fault during charging. The self-checking method is applied to a self-checking device, wherein the self-checking device is provided with a BMS module, and the method comprises the following steps: when the charging equipment to be detected is in an idle state, controlling the BMS module to be connected with the charging equipment, and detecting the charging fault of the charging equipment aiming at the BMS module to obtain a detection result; and if the detection result shows that the charging equipment has the charging fault, recording fault information.

The following detailed description of the technical solutions of the present application will be given by way of the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and embodiments of the present application are detailed descriptions of the technical solutions of the present application, and not limiting the technical solutions of the present application, and that the embodiments and technical features of the embodiments of the present application may be combined with each other without conflict.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Examples

Referring to fig. 1, a first embodiment of the present invention provides a self-checking method applied to a self-checking device, the self-checking device is provided with a BMS module, the method includes the following steps:

S101: when the charging equipment to be detected is in an idle state, controlling the BMS module to be connected with the charging equipment, and detecting the charging fault of the charging equipment aiming at the BMS module to obtain a detection result;

s102: and if the detection result shows that the charging equipment has the charging fault, recording a fault message.

Specifically, in the prior art, the charging fault detection generally needs to trigger the charging equipment to start charging after the vehicle is connected to the charging equipment, and then detects a fault occurring during charging, so that after the vehicle runs to the position where the charging equipment is located, the charging equipment can trigger the charging fault detection when actually charging the vehicle, if the charging equipment just has the charging fault, the charging equipment can not charge the vehicle, so that the vehicle runs for one time, and if the cruising ability of the vehicle is insufficient to run to a new charging equipment, a lot of unnecessary processing expenditure can be caused.

The self-checking method in this embodiment is applied to a self-checking device, and the self-checking device may be a device independent of the charging apparatus or may be a part of the charging apparatus, and the embodiment is not limited herein. Be provided with BMS (Battery MANAGEMENT SYSTEM) module in this self-checking device, this BMS module is the same with the BMS function in the new forms of energy electric vehicle, like this, when determining through step S101 that the Battery charging outfit that waits to detect is in idle state, BMS module in the control self-checking device is connected with Battery charging outfit, BMS module in the self-checking device just can simulate real vehicle, trigger Battery charging outfit and adopt normal charge flow and charge with it alternately, like this, just so can effectively detect the Battery charging outfit that appears when charging in idle state under the Battery charging outfit, and then, if the Battery charging outfit appears, record the Battery charging outfit through step S102, timely carry out the trouble and report the maintenance. Because the fault during charging can be effectively detected when the vehicle is idle, the fault during charging can be timely found, and therefore, the failed charging equipment can be timely repaired or cannot be pushed to a vehicle needing charging, and the problem that the residual electric quantity of the vehicle is wasted due to the fact that a user does not know the charging fault of the charging equipment is avoided.

In this embodiment, before step S101, it is necessary to determine whether the charging device is in an idle state, the manner of determination may be, but is not limited to, the following:

first kind: the self-checking device actively inquires, and the self-checking device sends a state detection instruction to the charging equipment; and receiving state information fed back by the charging equipment, and determining whether the charging equipment is in an idle state or not based on the state information.

Specifically, in this embodiment, communication interaction may be performed between the self-checking device and the charging device, the self-checking device may trigger a self-checking process according to a preset feedback period or according to a specified detection time, send a state detection instruction to the charging device, the charging device may feedback its own state information to the self-checking device based on the state detection instruction, and the self-checking device may determine whether the charging device is in an idle state based on the state information.

Further, in this embodiment, the preset feedback period may be set according to the failure frequency. Specifically, a historical fault of the current charging equipment is obtained, the fault frequency of the current charging equipment is counted, a preset feedback period is determined according to the fault frequency of the current charging equipment, and in order to find the fault in time, the preset feedback period needs to be set to be smaller than or equal to the fault frequency of the current charging equipment. Or obtaining the historical faults of the charging equipment of the whole network, counting the fault frequency of the whole network, and setting a preset feedback period according to the fault frequency of the whole network, wherein the preset feedback period is required to be smaller than or equal to the fault frequency of the whole network. In the specific implementation process, the preset period may be set according to actual needs, where the embodiment is not limited.

Further, in this embodiment, the specified detection time may be set according to the working condition of the charging device, for example, if the charging device is triggered by a day, the current working condition of the charging device during a week or a month is counted, the idle rate of the charging device during each period of the day is determined, and then the period with high idle rate is selected from the idle rate, and the specified detection time is set to a time within the period with high idle rate to trigger a self-checking method, such as: the idle rate is high in the early morning period, and the specified detection time can be set in the early morning. In this way, the influence on the normal operation of the charging device can be reduced as much as possible. The specified detection time may be set to one or more of the following periods, such as: the specified detection times include monday through friday 7a day: 00 and 12:00 a night. In the specific implementation process, the designated detection time may be configured as required, and the embodiment is not limited herein.

Second kind: the charging device actively feeds back. And the self-checking device receives the state information fed back by the charging equipment and determines whether the charging equipment is in an idle state or not based on the state information.

Specifically, in this embodiment, communication interaction may be performed between the self-checking device and the charging device, the self-checking method is triggered by the charging device itself, and the self-checking device may send its own state information to the charging device according to a preset feedback period or according to a specified feedback time, and may determine whether the charging device is in an idle state based on the state information.

Similarly, in this embodiment, the preset feedback period may be set according to the failure frequency. Specifically, a historical fault of the current charging equipment is obtained, the fault frequency of the current charging equipment is counted, a preset feedback period is determined according to the fault frequency of the current charging equipment, and in order to find the fault in time, the preset feedback period needs to be set to be smaller than or equal to the fault frequency of the current charging equipment. Or obtaining the historical faults of the charging equipment of the whole network, counting the fault frequency of the whole network, and setting a preset feedback period according to the fault frequency of the whole network, wherein the preset feedback period is required to be smaller than or equal to the fault frequency of the whole network. In the specific implementation process, the preset period may be set according to actual needs, where the embodiment is not limited.

Similarly, in this embodiment, the specified feedback time may be set according to the working condition of the charging device, for example, if the charging device is triggered by a day, the current working condition of the charging device during a week or a month is counted, the idle rate of the charging device during each period of the day is determined, and then the period with high idle rate is selected from the idle rate, and the specified feedback time is set to a time within the period with high idle rate to trigger the self-checking method, such as: the idle rate is high in the early morning hours, and the designated feedback time can be set in the early morning. In this way, the influence on the normal operation of the charging device can be reduced as much as possible. The specified feedback time may be set to one or more of a number of periods, such as: the specified feedback time includes 7 a.m. on monday to friday every day: 00 and 12:00 a night. In the specific implementation process, the designated feedback time may be configured as required, and the embodiment is not limited herein.

Third kind: and inquiring by the third party equipment, if the self-checking device is correspondingly provided with a fault management server of the cloud, triggering the self-checking method by the fault management server, sending a self-checking starting instruction to the self-checking device by the fault management server according to a preset detection period or a specified detection time, and after the self-checking device receives the self-checking starting instruction, sending a state detection instruction to the charging equipment, wherein communication interaction can be carried out between the self-checking device and the charging equipment, the charging equipment can feed back state information of the self-checking device to the self-checking device based on the state detection instruction, and the self-checking device can determine whether the charging equipment is in an idle state or not based on the state information. Or the fault management server directly sends a self-checking starting instruction to the charging equipment according to a preset detection period or a specified detection time, and after the charging equipment receives the self-checking starting instruction, the charging equipment feeds back own state information to the self-checking device, and the self-checking device can determine whether the charging equipment is in an idle state or not based on the state information. The determining manner of the preset detection period or the specified detection time may refer to the content in the first manner, and of course, other manners may be also included, which is not limited in this embodiment.

In a specific implementation process, the manner of triggering the self-checking device to perform the self-checking method is not limited to the above three manners, but may be implemented in other manners, and the embodiment is not limited herein.

Further, after the self-checking device determines that the charging device is in the idle state, a fault during charging of the charging device is detected, where in this embodiment, the charging fault during charging includes, but is not limited to: low voltage power failure, BMS communication failure, insulation failure, contactor front end failure, contactor back end failure, contactor adhesion failure, bleeder circuit failure, etc. Next, the present embodiment sequentially describes in detail the implementation manner of the above-described fault detection.

First kind: detecting the low-voltage power supply fault of the charging equipment to obtain a first detection result, wherein the method comprises the following steps: sending an auxiliary relay actuation instruction to the charging equipment, so that the charging equipment responds to the auxiliary relay actuation instruction, a low-voltage auxiliary power supply and the BMS module form a communicated loop, detecting the output voltage of the low-voltage auxiliary power supply, judging whether the output power supply is a preset voltage, if not, indicating that the charging equipment has a low-voltage power supply fault, and the low-voltage power supply fault is that the charging equipment cannot provide wake-up voltage for the BMS module.

Specifically, in this embodiment, the BMS module of the self-checking device is connected to the s+ and S-ports of the charging device, where s+ is the charging communication high-order data interface CAN-H in the charging device, and S-is the charging communication low-order data interface CAN-L in the charging device. The BMS module is respectively connected with an A+ port and an A-port of the charging equipment, wherein the A+ port is the positive electrode of the low-voltage auxiliary power supply of the charging equipment, and the A-port is the negative electrode of the low-voltage auxiliary power supply of the charging equipment. The low-voltage auxiliary power supply is used for providing wake-up voltage for the BMS module of the charging vehicle, so that the BMS module of the charging vehicle can perform normal communication interaction based on a charging protocol with the charging equipment through a line connected with the S+ and S-ports after being wakened.

It can be seen that the low-voltage power supply fault is a fault which needs to be detected first, and only if the fault is removed, the subsequent fault can be effectively detected. Specifically, there is an auxiliary relay between the BMS module and the loop formed by the A+ and the A-port, and when the auxiliary relay is absorbed, the loop formed by the BMS module and the A+ and the A-port is smooth, and the low-voltage auxiliary power supply outputs voltage to the BMS module so as to enable the BMS module to wake up. The output voltage output to the BMS module is detected, whether the output power supply is preset voltage is judged, the preset voltage is 12V or 24V of the wake-up voltage of the BMS module in the new energy automobile defined according to the standard, if the output voltage is not the preset voltage, the output voltage indicates that the BMS module cannot be normally waken up, the low-voltage auxiliary power supply may fail, or the low-voltage power supply circuit may fail in ageing, or the auxiliary relay may fail in suction, and the like, and the charging equipment is determined to have a low-voltage power supply failure, and the failure information is recorded through step S102.

Second kind: after the low-voltage power supply fault detection is performed, if the first detection result indicates that the charging equipment does not have the low-voltage power supply fault, performing BMS communication fault detection on the charging equipment to obtain a second detection result, including: sending a BMS communication instruction to the charging equipment so that the charging equipment starts a communication flow with the BMS module; and judging whether the charging equipment can normally communicate with the BMS module, and if not, indicating that the charging equipment has the BMS communication fault by the second detection result.

Specifically, if the charging device does not have a low-voltage power supply fault, it indicates that the charging device can wake up the BMS module normally, after the BMS module wakes up, the BMS module sends a BMS communication instruction to the charging device, the charging device starts a communication flow with the BMS module, the communication flow is executed according to a specified communication protocol GB/T27930-2015, connection detection, communication handshake, configuration and communication interaction of charging are sequentially completed, it is determined whether the charging device can complete the normal communication interaction with the BMS module, if the charging device cannot complete the normal communication interaction with the BMS module, it may be that the communication module of the charging device fails, or that output lines of s+ and S-fail, etc., it indicates that the charging device has a BMS communication fault, and the fault information is recorded through step S102.

Third kind: detecting the insulation fault of the charging equipment to obtain a third detection result, wherein the method comprises the following steps: and sending an insulation fault detection instruction to the charging equipment, so that the charging equipment starts an insulation detection circuit to detect the insulation resistance of the charging equipment, judging whether the insulation resistance is smaller than a preset resistance, and if so, indicating that the insulation fault exists in the charging equipment by the third detection result.

Specifically, in the prior art, in order to ensure the safety of the charging user, insulation detection is required before triggering charging after the vehicle is connected with the charging device, so as to ensure that the charging device is not in danger of electric leakage. Further, in the present embodiment, it is also necessary to perform insulation failure detection of the charging device after the self-test device is connected to the charging device. Specifically, the self-checking device sends an insulation fault detection instruction to the charging equipment, the charging equipment starts an insulation fault detection circuit after responding to the instruction, in the specific implementation process, a current sensing method, a balance bridge method and an auxiliary power method can be adopted to detect insulation resistance, the detected insulation resistance is compared with a preset resistance, an alternating current resistance value is not less than 500 Ω/v or a direct current resistance value is not less than 100 Ω/v during insulation resistance test, the preset resistance is a standard insulation resistance conforming to the standard regulation of the charging equipment, the preset resistance of the alternating current charging equipment is 500 Ω/v, and the preset resistance of the direct current charging equipment is 100 Ω/v. Therefore, if the detected insulation resistance is smaller than the standard insulation resistance, it may be that the battery module or the charging line of the charging device has failed, indicating that the charging device has an insulation failure, the failure information is recorded through step S102.

Fourth kind: detecting the front end fault of the contactor of the charging equipment to obtain a fourth detection result, wherein the method comprises the following steps: and sending a front-end fault detection instruction to the charging equipment so that the charging equipment detects the front-end voltage of the contactor, judging whether the front-end voltage is larger than a first preset voltage, and if not, indicating that the front-end fault of the contactor exists in the charging equipment by the fourth detection result.

Specifically, in the present embodiment, the failure of the front end of the contactor of the charging device refers to whether the power supply voltage can be normally output to the front end of the contactor. When detecting the front end fault of the contactor, the self-checking device sends a front end fault detection instruction to the charging equipment, the charging equipment responds to the instruction and then starts the front end fault detection circuit, the charging equipment outputs specified voltage, the front end voltage of the contactor is detected, whether the front end voltage is larger than a first preset voltage or not is judged, the first preset voltage can be set to be a value larger than or equal to 0, if the front end voltage is larger than the first preset voltage, the voltage output by the power supply module can be normally output to the front end of the contactor, and a circuit between the power supply module and the contactor has no fault. Otherwise, if the front-end voltage is smaller than or equal to the first preset voltage, which indicates that the voltage output by the power module cannot be normally output to the front end of the contactor, a fault may exist in a line between the power module and the contactor, which indicates that the charging equipment has the front-end fault of the contactor, and the fault information is recorded through step S102.

Fifth: if the fourth detection result indicates that the front end failure of the contactor does not exist in the charging equipment, performing the rear end failure detection of the contactor on the charging equipment to obtain a fifth detection result, wherein the fifth detection result comprises the following steps: and sending a rear-end fault detection instruction to the charging equipment, so that the charging equipment detects the rear-end voltage after the contactor is adhered, judging whether the rear-end voltage is larger than a second preset voltage, and if not, indicating that the rear-end fault of the contactor exists in the charging equipment by a fifth detection result.

Specifically, in the present embodiment, the malfunction of the rear end of the contactor of the charging device refers to whether or not the power supply voltage can be normally output to the rear end of the contactor in the case where the contactor is closed. When the rear end fault of the contactor is detected, the front end fault of the contactor is firstly determined to be absent, and the voltage of the power supply module can be ensured to be normally output to the front end of the contactor. And then, the self-checking device sends a rear-end fault detection instruction to the charging equipment, the charging equipment starts a rear-end fault detection circuit after responding to the instruction, the charging equipment outputs specified voltage, after the contactor is in an adhesion state, the rear-end voltage of the contactor is detected, whether the rear-end voltage is larger than a second preset voltage or not is judged, the second preset voltage can be set to be a value larger than or equal to 0, if the rear-end voltage is larger than the second preset voltage, the voltage output by the power supply module can be normally output to the rear end of the contactor, and a circuit between the contactor and the rear end has no fault. Otherwise, if the back-end voltage is less than or equal to the second preset voltage, which indicates that there is a possible fault in the line between the contactor and the back-end, it indicates that the charging device has a fault in the back-end of the contactor, and the fault information is recorded in step S102.

Sixth: and if the fifth detection result indicates that the charging equipment does not have the rear end failure of the contactor, performing adhesion failure detection on the charging equipment to obtain a sixth detection result, wherein the sixth detection result comprises the following steps: and sending an adhesion fault detection instruction to the charging equipment, so that the charging equipment detects the disconnection rear-end voltage of the contactor after sending a disconnection instruction to the contactor, judges whether the disconnection rear-end voltage is greater than 0, and if so, the sixth detection result indicates that the contactor adhesion fault exists in the charging equipment.

Further, in this embodiment, if the charging device does not have a front end failure and a back end failure, a contactor adhesion failure is detected, and the contactor adhesion failure refers to whether the charging device sends an adhesion or disconnection instruction to the contactor, and the contactor can normally respond to the instruction. Specifically, the self-checking device sends a front-end fault detection instruction to the charging equipment, the charging equipment starts the adhesion fault detection circuit after responding to the instruction, when the contactor is determined to be in an adhesion state, the charging equipment sends a disconnection instruction to the contactor, then detects the rear-end voltage, judges whether the rear-end voltage is greater than 0, and if the rear-end voltage is greater than 0, the contactor is disconnected after the contactor does not normally respond to the disconnection instruction, and the adhesion fault exists in the contactor. Similarly, when the contactor is determined to be in the off state, the charging device sends an adhesion command to the contactor, then detects the back-end voltage, judges whether the back-end voltage is greater than 0, if the back-end voltage is equal to 0, indicates that the contactor does not normally respond to the adhesion command and then adheres, and the contactor has an adhesion fault, and records the fault information through step S102.

Seventh: performing bleeder circuit fault detection on the charging equipment to obtain a seventh detection result, including: and sending a bleeder circuit fault detection instruction to the charging equipment so that the charging equipment closes the bleeder circuit, detecting the output voltage of the charging equipment after closing the preset time, judging whether the output voltage is greater than 0, and if so, indicating that the bleeder circuit fault exists in the charging equipment by the seventh detection result.

Specifically, in this embodiment, in the detection of the insulation fault, the front-end fault of the contactor, the rear-end fault of the contactor, and the adhesion fault of the contactor, the power module of the charging device needs to output the specified voltage required for detecting the respective faults, and the output specified voltage is usually high voltage, so that in order to ensure safety, the voltage needs to be discharged after each fault detection, and if the discharging circuit has a discharging fault, a serious potential safety hazard exists. Specifically, a bleeder circuit fault detection instruction is sent to the charging equipment at the self-checking device, the charging equipment responds to the instruction, the charging equipment is disconnected after outputting the designated voltage, the bleeder circuit is started, after the bleeder circuit works for a preset time, the output voltage of the charging equipment is detected, whether the output voltage is larger than 0 is judged, if so, the bleeder circuit does not effectively bleed the voltage applied to the charging equipment, the existence of the bleeder circuit fault of the charging equipment is indicated, and the fault information is recorded.

In the implementation process, the charging fault may further include a cooling air vent blocking fault, an electric gun electromagnetic lock unlocking fault, and the like, and of course, other faults may also be included, and in the implementation process, the charging fault may be set according to actual needs, where the embodiment is not limited.

Further, after recording a charging failure of the charging device at the time of charging, the recorded failure information is transmitted to the target object so that the target object outputs the failure information, through step S102.

The target object comprises any one or more of combination of the charging equipment, a fault management server corresponding to the self-checking device, a target user, an output module of the self-checking device and a stake cloud server corresponding to the charging equipment.

Specifically, in this embodiment, for the charging fault detected by the self-detection device, effective output is required, so that the charging user can learn the fault information in time, so as to avoid wasting the remaining power of the vehicle. And the related faults of the charging equipment are required to be effectively fed back and reported, so that the charging equipment can be timely overhauled effectively, and reliable charging service is provided for users.

In this embodiment, the recorded fault information may be sent to the charging device, where the charging device is provided with a corresponding output module, or the recorded fault information may be sent to an output module in the self-checking device, where the fault information is output through the output module, so that a maintainer associated with the charging device may find the fault information of the charging device in time during the inspection process. The output module may be a display screen, an audio output device, or the like, and in the specific implementation process, the output module may be configured according to actual needs, where the embodiment is not limited.

In this embodiment, after receiving the fault information sent by the self-checking device, the charging device uploads its own fault information to the belonging cloud pile server. Or the self-checking device directly sends the fault information of the charging equipment to the stake cloud server to which the charging equipment belongs, and the stake cloud server can not push the charging equipment to the user when searching for the available charging equipment for the user. And the stake cloud server can learn the operation and maintenance personnel bound by the charging equipment through the identification information of the charging equipment, and inform the operation and maintenance personnel to carry out effective overhaul on the charging equipment. Or acquiring the position information of the charging equipment, inquiring the operation and maintenance personnel nearest to the charging equipment, and informing the operation and maintenance personnel to carry out effective overhaul on the charging equipment.

In this embodiment, the recorded fault information may be sent to a fault management server corresponding to the self-checking device. Specifically, in this embodiment, the self-checking device may be a third party device independent of the charging device, where the self-checking device is provided with a fault management server, and is configured to effectively maintain a fault of the charging device, and the fault management server is provided with a corresponding client, a charged user may register to the fault management server in this embodiment through the client, and the fault management server may provide an addressing service for the charged user, and specifically, when the user needs to charge, the user sends a charging request to the fault management server through the client, and the fault management server may search, according to a location of the charged user, for a charging device near the charged user without a fault, and recommend the charging device to the charged user. In order to push the non-faulty charging devices to the user, the fault management server maintains fault information for each charging device.

Each self-checking device is provided with a self-checking device identifier, and each self-checking device is also bound with a charging equipment identifier corresponding to the charging equipment, and when the self-checking device uploads fault information, the self-checking device identifier and the charging equipment identifier of the charging equipment are required to be uploaded together. After receiving the fault information, the fault management server stores the fault information in a storage space corresponding to the self-checking device identifier and the charging equipment identifier, and deletes the charging equipment from the non-fault charging equipment set. In this way, the fault management server does not push the charging device to the charging user. And the fault management server can acquire the operation and maintenance personnel bound by the charging equipment through the charging equipment identifier of the charging equipment, and inform the operation and maintenance personnel to carry out effective overhaul on the charging equipment. Or acquiring the position information of the charging equipment, inquiring the operation and maintenance personnel nearest to the charging equipment, and informing the operation and maintenance personnel to carry out effective overhaul on the charging equipment.

Furthermore, after the maintenance of the charging equipment is completed, the fault-free state information can be sent to the self-checking device, the self-checking device sends the fault-free state information of the charging equipment to the fault management server, or after the self-checking device triggers the self-checking method next time, if the fault information is not detected, the fault-free state information of the charging equipment is also actively sent to the fault management server, and the fault management server adds the charging equipment into a fault-free charging equipment set, so that the charging equipment can be pushed to a charging user in time after the maintenance is completed and the normal state is restored.

In this embodiment, if the self-checking device detects a charging failure of the charging device, it may also send the charging failure to the target user, where the target user may be an operation and maintenance person bound to the charging device. Or the target user may be a user who charges with the charging device frequently, and in the implementation process, the target user may be set according to actual needs, where the embodiment is not limited.

In the implementation process, the processing manner of the fault information is not limited to the above-mentioned several types, and in the implementation process, the fault information may be set according to actual needs, and the embodiment is not limited herein.

Through the self-checking method in this embodiment, be provided with the BMS module in the self-checking device, can simulate car and charging equipment and charge, so, when determining that the charging equipment that waits to detect is in idle state, the BMS module in the control self-checking device is connected with the charging equipment, and charging equipment carries out to charge to the BMS module, so, just so, can detect the charging failure of charging equipment to the BMS module, obtain the testing result, if the testing result indicates that charging equipment has the charging failure, record fault information. Therefore, after the vehicle does not need to travel to the position of the charging equipment, the charging equipment can trigger to detect the charging fault when actually charging the vehicle, and if the charging equipment has the charging fault, the charging equipment cannot charge the vehicle, so that the residual electric quantity of the vehicle is wasted. The scheme of the embodiment of the invention can detect the charging fault existing in the charging process of the charging equipment in advance when the charging equipment is in an idle state, and further, the fault declaration can be timely carried out and timely overhauled as the charging fault can be timely detected, so that reliable charging service is provided for users.

Referring to fig. 2, based on the same inventive concept, a second embodiment of the present invention provides a self-checking device provided with a BMS module, the device comprising:

The fault detection unit 201 is configured to control the BMS module to connect with the charging device when it is determined that the charging device to be detected is in an idle state, and detect a charging fault of the charging device with respect to the BMS module, so as to obtain a detection result;

A recording unit 202, configured to record fault information if the detection result indicates that the charging device has the charging fault.

As an alternative embodiment, the fault detection unit 201 is specifically configured to:

As an alternative embodiment, the fault detection unit 201 is further configured to:

transmitting a state detection instruction to the charging equipment;

As an alternative embodiment, the device further comprises a transmitting unit, the transmitting unit being specifically configured to:

As an optional embodiment, the target object includes any one or more combinations of the charging device, a fault management server corresponding to the self-checking device, a target user, an output module of the self-checking device, and a cloud pile server corresponding to the charging device.

Specifically, the specific process of the self-checking device in the present embodiment for performing self-checking on the charging device is described in detail in the foregoing first embodiment, and reference may be made to the content in the first embodiment, which is not described herein.

Based on the same inventive concept as the self-checking method in the previous embodiments, a third embodiment of the present invention also provides a self-checking device provided with a BMS module. The self-test device shown in fig. 3 includes a memory 304, a processor 302, and a computer program stored on the memory 304 and executable on the processor 302, wherein the processor 302 implements the steps of the self-test method described above when executing the program.

Where in FIG. 3 a bus architecture (represented by bus 300), bus 300 may comprise any number of interconnected buses and bridges, with bus 300 linking together various circuits, including one or more processors, represented by processor 302, and memory, represented by memory 304. Bus 300 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, the method of the present embodiment will not be further described. Bus interface 306 provides an interface between bus 300 and receiver 301 and transmitter 303. The receiver 301 and the transmitter 303 may be the same element, i.e. a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 302 is responsible for managing the bus 300 and general processing, while the memory 304 may be used to store data used by the processor 302 in performing operations.

In the embodiment of the present invention, the processor 302 included in the self-checking device further has the following functions:

Further, the self-test device includes a processor 302 that also has the following functions:

Before detecting a charging fault of the charging equipment aiming at the BMS module and obtaining a detection result, sending a state detection instruction to the charging equipment;

And before the low-voltage power supply fault detection is carried out on the charging equipment to obtain a first detection result, receiving state information fed back by the charging equipment, and determining whether the charging equipment is in an idle state or not based on the state information.

A fourth embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which can be stored in a computer-readable storage medium if implemented in the form of software functional units and sold or used as a stand-alone product. Based on such understanding, the present invention may implement all or part of the flow of the self-checking method of the first embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of each of the method embodiments when executed by a processor. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device, medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random-access Memory (RAM, random Access Memory), electrical carrier signals, telecommunications signals, and software distribution media that can carry the computer program code. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A self-checking method, characterized by being applied to a self-checking device provided with a BMS module, the method comprising:

if the detection result shows that the charging equipment has the charging fault, recording fault information;

Wherein, to the battery charging outfit is aimed at the battery charging fault of BMS module detects, obtains the testing result, includes:

Detecting the low-voltage power supply fault of the charging equipment to obtain a first detection result, wherein the method comprises the following steps: sending an auxiliary relay actuation instruction to the charging equipment, so that the charging equipment responds to the auxiliary relay actuation instruction, and then a low-voltage auxiliary power supply and the BMS module form a communicated loop, detecting the output voltage of the low-voltage auxiliary power supply, judging whether the output voltage is a preset voltage, if not, the first detection result shows that the charging equipment has the low-voltage power supply fault, and the low-voltage power supply fault is that the charging equipment cannot provide wake-up voltage for the BMS module;

If the first detection result indicates that the charging equipment does not have the low-voltage power supply fault, BMS communication fault detection is performed on the charging equipment, and a second detection result is obtained, wherein the second detection result comprises the following steps: sending a BMS communication instruction to the charging equipment so that the charging equipment starts a communication flow with the BMS module; judging whether the charging equipment can normally communicate with the BMS module, if not, the second detection result shows that the charging equipment has the BMS communication fault;

Detecting the insulation fault of the charging equipment to obtain a third detection result, wherein the method comprises the following steps: sending an insulation fault detection instruction to the charging equipment, so that the charging equipment starts an insulation detection circuit to detect the insulation resistance of the charging equipment, judging whether the insulation resistance is smaller than a preset resistance, and if so, indicating that the insulation fault exists in the charging equipment by the third detection result;

Detecting the front end fault of the contactor of the charging equipment to obtain a fourth detection result, wherein the method comprises the following steps: sending a front-end fault detection instruction to the charging equipment so that the charging equipment detects the front-end voltage of a contactor, judging whether the front-end voltage is larger than a first preset voltage, and if not, indicating that the front-end fault of the contactor exists in the charging equipment by the fourth detection result;

If the fourth detection result indicates that the front end failure of the contactor does not exist in the charging equipment, performing the rear end failure detection of the contactor on the charging equipment to obtain a fifth detection result, wherein the fifth detection result comprises the following steps: sending a rear-end fault detection instruction to the charging equipment, so that the charging equipment detects rear-end voltage after the contactor is adhered, judging whether the rear-end voltage is larger than a second preset voltage, and if not, indicating that the charging equipment has the rear-end fault of the contactor by a fifth detection result;

2. The method as set forth in claim 1, wherein the detecting the charging failure of the charging device with respect to the BMS module, to obtain a detection result, includes:

3. The method of claim 1, wherein before detecting a charging failure of the charging device for the BMS module, the method further comprises:

transmitting a state detection instruction to the charging equipment;

4. The method of claim 1, wherein prior to said low voltage power failure detection of the charging device to obtain a first detection result, the method further comprises:

5. The method of claim 1, wherein after the recording of fault information, the method further comprises:

6. The method of claim 5, wherein the target object comprises any one or more of a combination of the charging device, a fault management server corresponding to the self-test apparatus, a target user, an output module of the self-test apparatus, and a stub cloud server corresponding to the charging device.

7. A self-test device, characterized in that the self-test device is provided with a BMS module, the device comprising:

A recording unit, configured to record fault information if the detection result indicates that the charging device has the charging fault;

wherein, the fault detection unit is specifically configured to:

8. The apparatus of any of claims 7, wherein the fault detection unit is specifically configured to:

9. The apparatus of claim 7, wherein the fault detection unit is further to:

transmitting a state detection instruction to the charging equipment;

10. The apparatus of claim 7, wherein the fault detection unit is further to:

11. The apparatus of claim 7, further comprising a transmitting unit, the transmitting unit being specifically configured to:

12. The apparatus of claim 11, wherein the target object comprises any one or more of a combination of the charging device, a fault management server corresponding to the self-test apparatus, a target user, an output module of the self-test apparatus, and a stub cloud server corresponding to the charging device.

13. A self-test device, characterized in that it is provided with a BMS module, the device comprising a processor and a memory:

The memory is used for storing a program for executing the method of any one of claims 1 to 6;

the processor is configured to execute a program stored in the memory.

14. A computer storage medium, characterized in that it stores a computer program, characterized in that the program, when executed by a processor, implements the steps of the method according to any one of claims 1 to 6.