CN114895150A - Electric vehicle insulation function verification method and device, terminal and storage medium - Google Patents
Electric vehicle insulation function verification method and device, terminal and storage medium Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention discloses a method, a device, a terminal and a storage medium for verifying the insulation function of an electric vehicle, belonging to the technical field of electric vehicles and comprising the following steps: the device is connected to a vehicle direct current charging port through an interface, carries out state self-checking and takes corresponding measures according to a self-checking result; when a test request is received, obtaining a test mode and corresponding test parameters in the test request; and formulating a test time sequence, and setting external input data of the main insulation resistor under test conditions under each time sequence. And determining a function verification strategy according to the test time sequence. The utility model provides an electric motor car insulating function verification method, device, terminal and storage medium, only need the device to be connected to the vehicle direct current mouth that charges, the suitability is strong and the commonality is strong, need not manual operation, has promoted operation convenience greatly, and efficiency of software testing and security are high, can accomplish the test procedure automatically and issue the test report, have guaranteed vehicle and personnel's safety, through the device self-checking before the test and the relevant state inspection of vehicle battery package, can not destroy the vehicle in the test procedure.
Description
Technical Field
The invention discloses a method, a device, a terminal and a storage medium for verifying an insulation function of an electric vehicle battery, and belongs to the technical field of electric vehicles.
Background
The Battery Electric Vehicle (BEV) is a Vehicle which uses a Vehicle-mounted Battery as power and uses a motor to drive wheels to run, meets various requirements such as road traffic, safety regulations and the like, and has a wide prospect because the Electric Vehicle has less influence on the environment compared with a traditional Vehicle.
Since the vehicle-mounted battery is mounted, the insulation state of the electric vehicle is an important index of the vehicle in order to prevent the vehicle-mounted battery from damaging the human body. At present, the insulation state of the whole vehicle is generally collected and monitored in real time by a Battery Management System (BMS), and the BMS currently verifies the insulation function in the real vehicle by stringing an adjustable direct current resistor between the positive electrode of a Battery pack of the electric vehicle and the ground of a low-voltage storage Battery, another adjustable direct current resistor is connected between the negative electrode of the battery pack of the electric vehicle and the ground of the low-voltage storage battery in series for functional verification, the problem is often caused by the selection of the position of the series resistor, because the positive electrode and the negative electrode of the battery on the vehicle are not easy to contact, articles are often required to move on the vehicle, the high-voltage wire harness of the vehicle is damaged, introduce resistance above that, operate both dangerous still to have certain destruction to vehicle itself like this, this kind of device often very simply, and the suitability is very poor, and all motorcycle types of unable accomplishing the adaptation and operability are loaded down with trivial details, and efficiency of software testing is low, has personnel to electrocute, destroys potential safety hazards such as vehicle.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method, a device, a terminal and a storage medium for verifying the insulation function of an electric vehicle, which are used for carrying out safety detection and control automatic completion test and issuing a test report by matching a vehicle direct current charging port with upper computer software, so that the problems of complex operability, low test efficiency, potential safety hazards of personnel electric shock, vehicle damage and the like of the conventional verification method are solved.
The technical scheme of the invention is as follows:
according to a first aspect of embodiments of the present invention, there is provided an electric vehicle insulation function verification method, including:
when a test request is received, obtaining a test mode and corresponding test parameters in the test request;
and formulating a test time sequence, and setting external input data of the main insulation resistor under test conditions under each time sequence.
And determining a function verification strategy according to the test time sequence.
Preferably, when receiving a test request, the method for obtaining a test pattern and corresponding test parameters in the test request further includes: the device is connected to a vehicle direct current charging port through an interface, carries out state self-checking and takes corresponding measures according to self-checking results.
Preferably, when the test mode is an insulation alarm test, the test parameters include: the insulation alarm value range, the insulation release alarm value range and the threshold value allowed maximum deviation resistance value;
When the test mode is insulation accuracy test, the test parameters include: the lower limit value of the resistance range, the upper limit value of the resistance range, the testing step length and the maximum percentage of insulation collection errors.
Preferably, a test time sequence is formulated, external input data of the main insulation resistor in the test condition under each time sequence is set, and the method also comprises the steps of obtaining relevant states of the vehicle and judging whether the relevant states are normal or not, and the method comprises the following steps:
acquiring a battery pack state and a current vehicle insulation state, and taking corresponding measures according to the battery pack state and the current vehicle insulation state;
acquiring the working state of a vehicle charging interface charging device relay, and taking corresponding measures according to the working state of the vehicle charging interface charging device relay;
and acquiring the hardware version of the BMS software version.
Preferably, when the test mode is an insulation alarm test, the formulating a test time sequence, and setting external input data of the main insulation resistor under test conditions of each time sequence includes:
transmitting a command to close a charging relay to the vehicle BMS through a diagnostic IO control function;
acquiring the voltage of a battery pack through a high-voltage sampling circuit in the device;
obtaining an insulation alarm condition and a warning relieving condition according to the voltage of the battery pack and test parameters input by a user;
Setting main insulation resistance external input data according to the insulation alarm condition and the alarm relieving condition, wherein the main insulation resistance external input data comprises: and the main positive insulation resistor inputs data externally and the main negative insulation resistor inputs data externally.
Preferably, when the test mode is an insulation accuracy test, the formulating a test time sequence, and setting external input data of the main insulation resistor under test conditions of each time sequence includes:
obtaining all preprocessed test points according to the test range and the test step length of the test parameters input by the user;
obtaining a processed test point through safety risk analysis processing according to the preprocessed test point;
and setting external input data of the main insulation resistor through the processed test points.
Preferably, the taking of the corresponding measures includes: the method comprises the following steps of test execution, test result display, completion prompt and test end generation of a test report, wherein the function verification strategy comprises the following steps: the method comprises the steps of executing a test, obtaining test data, displaying a test result, sending a disconnection instruction to a relay of the vehicle charging interface charging device and generating a test report.
According to a second aspect of the embodiments of the present invention, there is provided an electric vehicle insulation function verification apparatus including:
Connecting device for connect the vehicle direct current interface that charges, connecting device adopts the direct current interface that charges of the general connecting device 3 rd part that national standard electric automobile conduction charges, and concrete pin includes:
the DC + end is a pin for connecting the main positive insulation resistor, the other end of the main positive insulation resistor is connected with the PE end, and the voltage of the battery pack is collected and input to the positive electrode;
the DC-end is a pin for connecting the main negative insulation resistor, the other end of the main negative insulation resistor is connected with the PE end, and the voltage of the battery pack is collected and input into the negative electrode;
the PE end is used for protecting and grounding and connecting a device ground wire and a vehicle low-voltage ground wire;
the S + end is an upper computer connecting end and is connected with the vehicle communication interface;
the S-end is an upper computer connecting end and is connected with the vehicle communication interface;
the CC1 end, the CC2 end, the A + end and the A-end are kept in an open circuit state when in use;
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a test mode and corresponding test parameters in a test request when the test request is received;
and the formulating unit is used for formulating a test time sequence and setting external input data of the main insulation resistor under test conditions under each time sequence.
And the execution unit is used for determining a function verification strategy according to the test time sequence.
According to a third aspect of embodiments of the present invention, there is provided a terminal, including:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
the method of the first aspect of the embodiments of the present invention is performed.
According to a fourth aspect of embodiments of the present invention, there is provided a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of a terminal, enable the terminal to perform the method of the first aspect of embodiments of the present invention.
According to a fifth aspect of embodiments of the present invention, there is provided an application program product, which, when running on a terminal, causes the terminal to perform the method of the first aspect of embodiments of the present invention.
The invention has the beneficial effects that:
the patent provides an electric motor car insulating function verification method, a device, a terminal and a storage medium, only need the device to be connected to the vehicle direct current mouth that charges, suitability and commonality are strong, need not manual operation, operation convenience has been promoted greatly, efficiency of software testing and security are high, can accomplish the test procedure automatically and issue the test report, it can guarantee that the tester can not trigger the danger of high-voltage electric shock to use the interface that charges to carry out insulating function verification, also can avoid personnel to set up the improper danger that leads to resistance through host computer software operation, vehicle and personnel's safety have been guaranteed, through device self-checking and vehicle battery package relevant state inspection before the test, can not destroy the vehicle in the test procedure.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
FIG. 1 is a flow chart illustrating a method of verifying an insulation function of an electric vehicle according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating a method of verifying an insulation function of an electric vehicle in accordance with an exemplary embodiment;
fig. 3 is a block diagram schematically illustrating a structure of an electric vehicle insulation function verifying apparatus according to an exemplary embodiment;
fig. 4 is a schematic block diagram of a terminal structure shown in accordance with an example embodiment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment of the invention provides an electric vehicle insulation function verification method, which is realized by a terminal, wherein the terminal can be a smart phone, a desktop computer or a notebook computer and the like, and the terminal at least comprises a CPU (Central processing Unit), a voice acquisition device and the like.
Example one
Fig. 1 is a flowchart illustrating an electric vehicle insulation function verification method for use in a terminal according to an exemplary embodiment, the method including the steps of:
step S101, when a test request is received, obtaining a test mode and corresponding test parameters in the test request;
step S102, a test time sequence is formulated, and external input data of the main insulation resistor under test conditions under each time sequence is set.
And step S103, determining a function verification strategy according to the test time sequence.
Preferably, when receiving a test request, the method for obtaining a test pattern and corresponding test parameters in the test request further includes: the device is connected to a vehicle direct current charging port through an interface, carries out state self-checking and takes corresponding measures according to self-checking results.
Preferably, when the test mode is an insulation alarm test, the test parameters include: the insulation alarm value range, the insulation release alarm value range and the threshold value allowed maximum deviation resistance value;
when the test mode is insulation accuracy test, the test parameters include: the lower limit value of the resistance range, the upper limit value of the resistance range, the testing step length and the maximum percentage of insulation collection errors.
Preferably, a test time sequence is formulated, external input data of the main insulation resistor in the test condition under each time sequence is set, and the method also comprises the steps of obtaining relevant states of the vehicle and judging whether the relevant states are normal or not, and the method comprises the following steps:
acquiring a battery pack state and a current vehicle insulation state, and taking corresponding measures according to the battery pack state and the current vehicle insulation state;
acquiring the working state of a vehicle charging interface charging device relay, and taking corresponding measures according to the working state of the vehicle charging interface charging device relay;
And acquiring the hardware version of the BMS software version.
Preferably, when the test mode is an insulation alarm test, the formulating a test time sequence, and setting external input data of the main insulation resistor under test conditions of each time sequence includes:
transmitting a command to close a charging relay to the vehicle BMS through a diagnosis IO control function;
acquiring the voltage of a battery pack through a high-voltage sampling circuit in the device;
obtaining an insulation alarm condition and a warning relieving condition according to the voltage of the battery pack and test parameters input by a user;
setting main insulation resistance external input data according to the insulation alarm condition and the alarm relieving condition, wherein the main insulation resistance external input data comprises: the main positive insulation resistance inputs data externally and the main negative insulation resistance inputs data externally.
Preferably, when the test mode is an insulation accuracy test, the formulating a test time sequence, and setting external input data of the main insulation resistor under test conditions of each time sequence includes:
obtaining all preprocessed test points according to the test range and the test step length of the test parameters input by the user;
obtaining a processed test point through safety risk analysis processing according to the preprocessed test point;
And setting external input data of the main insulation resistor through the processed test points.
Preferably, the taking of the corresponding measures includes: the method comprises the following steps of test execution, test result display, completion prompt and test end generation of a test report, wherein the function verification strategy comprises the following steps: the method comprises the steps of executing a test, obtaining test data, displaying a test result, sending a disconnection instruction to a relay of the vehicle charging interface charging device and generating a test report.
Example two
Fig. 2 is a flowchart illustrating an electric vehicle insulation function verification method for use in a terminal according to an exemplary embodiment, the method including the steps of:
the device host computer controls the on-off of each device relay in array program control respectively, corresponding measures are determined to be taken through device relay feedback state recognition after the control device relay, and the corresponding measures are taken to include: and executing the test, displaying the test result, finishing the prompt and generating a test report after the test is finished. If the feedback overtime or the feedback state is abnormal, the software feeds back the abnormality and quits, and finishes prompting and testing and generates a testing report.
If the feedback state is normal, step 202 is executed to set the initial value range of the external input resistance Rp of the main positive insulation resistor and the external input resistance Rn of the main negative insulation resistor to 50-500k, which is 50k in this embodiment. Wherein, the external input data of main insulation resistance includes: the main positive insulation resistor external input resistance Rp and the main negative insulation resistor external input resistance Rn are respectively a battery positive electrode to vehicle body ground resistance value and a battery negative electrode to vehicle body ground resistance value.
after the device performs self-checking on the device relay per se through the step 201, the device enters a state to be tested, and a test request is acquired. And when the test request is received, obtaining the test mode and the corresponding test parameters in the test request. And prompting a tester to input the test parameters through an interface according to the corresponding test parameters, wherein: when the test mode is an insulation alarm test, the test parameters comprise: the insulation alarm value range, the insulation release alarm value range and the threshold value allowed maximum deviation resistance value; when the test mode is insulation accuracy test, the test parameters include: the lower limit value of the resistance range, the upper limit value of the resistance range, the testing step length and the maximum percentage of insulation collection errors.
Wherein, the insulation alarm value range and the insulation release alarm value range, unit ohm/V, the default range of 200-.
The threshold value allows the maximum deviation resistance value, which is recorded as Rtol and the unit kohm, and the default range is 0-100, and the default range can be set through software. And the alarm value and the alarm-removing value converted according to the voltage, the insulation alarm value range and the insulation-removing alarm value range are corrected when the insulation alarm test is executed.
The specific method comprises the following steps: when the alarm test is verified, the value is selected as the alarm value-threshold allowed maximum deviation resistance value, and when the alarm test is released, the value is selected as the alarm value + threshold allowed maximum deviation resistance value.
The lower limit value of the test resistance range, the upper limit value of the test resistance range and the test step length are used for obtaining the test resistance range and the test resistance point; the maximum percentage of insulation acquisition errors, unit percent and the default range of 0-10 can be set through software and used for judging whether the precision obtained according to the sampling result meets the requirement or not.
After obtaining the corresponding test parameters in the test request, verifying whether the test parameters are reasonable or not, and preventing the user from inputting errors or unit selection errors, if the obtained parameters are not in respective default ranges, alarming to prompt the user to modify the parameters. Step 203 may be performed after the user modifies the parameters to be within the default ranges.
acquiring a battery pack state and a current vehicle insulation state, and taking corresponding measures according to the battery pack state and the current vehicle insulation state, wherein the taking corresponding measures comprises the following steps: and executing the test, displaying the test result, finishing the prompt and generating a test report after the test is finished.
Acquiring the working state of a vehicle charging interface charging device relay, and taking corresponding measures according to the working state of the vehicle charging interface charging device relay;
and acquiring the hardware version of the BMS software version.
when the test mode is an insulation alarm test, the specific contents comprise:
transmitting a command to close a charging relay to the vehicle BMS through a diagnostic IO control function;
acquiring the voltage of a battery pack through a high-voltage sampling circuit in the device;
obtaining an insulation alarm condition and a warning relieving condition according to the voltage of the battery pack and test parameters input by a user;
setting main insulation resistance external input data according to the insulation alarm condition and the alarm relieving condition, wherein the main insulation resistance external input data comprises: the main positive insulation resistance inputs data externally and the main negative insulation resistance inputs data externally.
When the test mode is insulation accuracy test, the specific contents include:
obtaining all preprocessed test points according to the test range and the test step length of the test parameters input by the user;
obtaining a processed test point through safety risk analysis processing according to the preprocessed test point, wherein the specific contents are as follows:
and analyzing the preprocessed test points to remove the test points with system safety risks, wherein the test points have the system safety risks, for example, the external input data of the main positive insulation resistor and the external input data of the main negative insulation resistor are simultaneously smaller than a first safety threshold, or the sum of the external input data of the main positive insulation resistor and the external input data of the main negative insulation resistor is smaller than a second safety threshold, and the first safety threshold and the second safety threshold can be set through software according to different projects.
And setting external input data of the main insulation resistor through the processed test points.
when the test mode is an insulation alarm test, the following contents are included:
converting the alarm condition (obtaining the resistance value by multiplying the current voltage by the threshold value) and the alarm-removing condition (namely the external input resistance Rp of the main positive insulation resistor and the external input resistance Rn of the main negative insulation resistor are correspondingly converted) according to the insulation alarm value field, the insulation-removing alarm value field and the collected voltage of the battery pack
When a battery positive electrode insulation alarm test is carried out, the external input resistance Rn of the main negative insulation resistor is set to be the maximum value, the external input resistance Rp of the main positive insulation resistor is set to be an alarm condition-Rtol, the BMS is observed to judge whether the battery positive electrode insulation fault is reported or not by reading a fault code, then the external input resistance Rp of the main positive insulation resistor is set to be an alarm removing condition + Rtol, the fault code is read, namely, the fault state is changed from true to false, and the BMS is observed to judge whether the battery positive electrode insulation fault is removed or not;
when a battery cathode insulation alarm test is carried out, the external input resistance Rp of the main positive insulation resistor is set to be the maximum value, the external input resistance Rn of the main negative insulation resistor is set to be an alarm condition-threshold allowable maximum deviation resistance value, the BMS is observed by reading fault codes to judge whether the battery cathode insulation fault is reported, then the external input resistance Rn of the main negative insulation resistor is set to be an alarm removing condition + threshold allowable maximum deviation resistance value, the fault codes are read, namely, the fault state is changed from true to false, and the BMS is observed to judge whether the battery cathode insulation fault is removed.
When the test mode is the insulation accuracy test, the following contents are included:
and (3) setting different main positive insulation resistor external input resistance Rp and main negative insulation resistor external input resistance Rn according to the processed test points obtained after the preprocessing in the step (204), reading the acquisition result reported by the BMS, comparing the acquisition result with the device setting value according to the BMS acquisition result, and judging whether the acquisition precision meets the precision requirement.
The two setting test modes determine a function verification strategy, which includes: and alarming, obtaining the test parameters, sending a disconnection instruction to the relay of the vehicle charging interface charging device and generating a test report.
According to the invention, only the device is connected to the vehicle direct-current charging port, the applicability and universality are strong, manual operation is not needed, the operation convenience is greatly improved, the test efficiency and safety are high, the test process can be automatically completed and a test report can be issued, the insulation function verification by using the charging port can ensure that a tester can not trigger the high-voltage electric shock danger, the danger caused by improper setting of the resistor by the tester can be avoided through the software operation of the upper computer, the safety of the vehicle and the personnel is ensured, and the vehicle can not be damaged in the test process through the self-checking of the device before the test and the related state check of the vehicle battery pack.
EXAMPLE III
In an exemplary embodiment, there is also provided an electric vehicle insulation function verifying apparatus, as shown in fig. 3, including: the method comprises the following steps:
connecting device 310 for connect the vehicle direct current interface that charges, connecting device adopts the direct current interface that charges of the general connecting device part 3 of national standard electric automobile conduction, and concrete pin includes:
The DC + end is a pin for connecting the main positive insulation resistor, the other end of the main positive insulation resistor is connected with the PE end, and the voltage of the battery pack is collected and input into the positive electrode;
the DC-end is a pin for connecting the main negative insulation resistor, the other end of the main negative insulation resistor is connected with the PE end, and the voltage of the battery pack is collected and input into the negative electrode;
the PE end is used for protecting and grounding and connecting the equipment ground wire and the vehicle low-voltage ground wire;
the S + end is an upper computer connecting end and is connected with the vehicle communication interface;
the S-end is an upper computer connecting end and is connected with the vehicle communication interface;
the CC1 end, the CC2 end, the A + end and the A-end are kept in an open circuit state when in use;
an obtaining unit 320, configured to obtain, when a test request is received, a test pattern and corresponding test parameters in the test request;
the formulating unit 330 is configured to formulate a test timing sequence, and set external input data of the main insulation resistor in the test condition under each timing sequence.
And the execution unit 340 is configured to determine a function verification policy according to the test timing.
According to the invention, only the device is connected to the vehicle direct-current charging port, the applicability and universality are strong, manual operation is not needed, the operation convenience is greatly improved, the test efficiency and safety are high, the test process can be automatically completed and a test report can be issued, the insulation function verification by using the charging port can ensure that a tester can not trigger the high-voltage electric shock danger, the danger caused by improper setting of the resistor by the tester can be avoided through the software operation of the upper computer, the safety of the vehicle and the personnel is ensured, and the vehicle can not be damaged in the test process through the self-checking of the device before the test and the related state check of the vehicle battery pack.
Example four
Fig. 4 is a block diagram of a terminal according to an embodiment of the present application, where the terminal may be the terminal in the foregoing embodiment. The terminal 400 may be a portable mobile terminal such as: smart phones, tablet computers. The terminal 400 may also be referred to by other names such as user equipment, portable terminal, etc.
Generally, the terminal 400 includes: a processor 401 and a memory 402.
In some embodiments, the terminal 400 may further optionally include: a peripheral interface 403 and at least one peripheral. Specifically, the peripheral device includes: at least one of radio frequency circuitry 404, touch screen display 405, camera 406, audio circuitry 407, positioning components 408, and power supply 409.
The peripheral interface 403 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 401 and the memory 402. In some embodiments, processor 401, memory 402, and peripheral interface 403 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 401, the memory 402 and the peripheral interface 403 may be implemented on a separate chip or circuit board, which is not limited by this embodiment.
The Radio Frequency circuit 404 is used for receiving and transmitting RF (Radio Frequency) signals, also called electromagnetic signals. The radio frequency circuitry 404 communicates with communication networks and other communication devices via electromagnetic signals. The rf circuit 404 converts an electrical signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 404 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a subscriber identity module card, and so forth. The radio frequency circuitry 404 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocols include, but are not limited to: the world wide web, metropolitan area networks, intranets, generations of mobile communication networks (2G, 3G, 4G, and 5G), Wireless local area networks, and/or WiFi (Wireless Fidelity) networks. In some embodiments, the rf circuit 404 may further include NFC (Near Field Communication) related circuits, which are not limited in this application.
The touch display screen 405 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. The touch display screen 405 also has the ability to capture touch signals on or over the surface of the touch display screen 405. The touch signal may be input to the processor 401 as a control signal for processing. The touch screen display 405 is used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the touch display screen 405 may be one, providing the front panel of the terminal 400; in other embodiments, the touch screen display 405 may be at least two, respectively disposed on different surfaces of the terminal 400 or in a folded design; in still other embodiments, the touch display 405 may be a flexible display disposed on a curved surface or on a folded surface of the terminal 400. Even more, the touch screen display 405 can be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The touch screen 405 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and other materials.
The camera assembly 406 is used to capture images or video. Optionally, camera assembly 406 includes a front camera and a rear camera. Generally, a front camera is used for realizing video call or self-shooting, and a rear camera is used for realizing shooting of pictures or videos. In some embodiments, the number of the rear cameras is at least two, and each of the rear cameras is any one of a main camera, a depth-of-field camera and a wide-angle camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize a panoramic shooting function and a VR (Virtual Reality) shooting function. In some embodiments, camera assembly 406 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.
The audio circuit 407 is used to provide an audio interface between the user and the terminal 400. The audio circuit 407 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 401 for processing, or inputting the electric signals to the radio frequency circuit 404 for realizing voice communication. For the purpose of stereo sound collection or noise reduction, a plurality of microphones may be provided at different portions of the terminal 400. The microphone may also be an array microphone or an omni-directional pick-up microphone. The speaker is used to convert electrical signals from the processor 401 or the radio frequency circuit 404 into sound waves. The loudspeaker can be a traditional film loudspeaker or a piezoelectric ceramic loudspeaker. When the speaker is a piezoelectric ceramic speaker, the speaker can be used for purposes such as converting an electric signal into a sound wave audible to a human being, or converting an electric signal into a sound wave inaudible to a human being to measure a distance. In some embodiments, audio circuitry 407 may also include a headphone jack.
The positioning component 408 is used to locate the current geographic position of the terminal 400 for navigation or LBS (Location Based Service). The Positioning component 408 can be a Positioning component based on the Global Positioning System (GPS) in the united states, the beidou System in china, or the galileo System in russia.
The power supply 409 is used to supply power to the various components in the terminal 400. The power source 409 may be alternating current, direct current, disposable or rechargeable. When the power source 409 includes a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
In some embodiments, the terminal 400 also includes one or more sensors 410. The one or more sensors 410 include, but are not limited to: acceleration sensor 411, gyro sensor 412, pressure sensor 413, fingerprint sensor 414, optical sensor 415, and proximity sensor 416.
The acceleration sensor 411 may detect the magnitude of acceleration in three coordinate axes of the coordinate system established with the terminal 400. For example, the acceleration sensor 411 may be used to detect components of the gravitational acceleration in three coordinate axes. The processor 401 may control the touch display screen 405 to display the user interface in a landscape view or a portrait view according to the gravitational acceleration signal collected by the acceleration sensor 411. The acceleration sensor 411 may also be used for acquisition of motion data of a game or a user.
The gyro sensor 412 may detect a body direction and a rotation angle of the terminal 400, and the gyro sensor 412 may collect a 3D (3 dimensional) motion of the user on the terminal 400 in cooperation with the acceleration sensor 411. From the data collected by the gyro sensor 412, the processor 401 may implement the following functions: motion sensing (such as changing the UI according to a user's tilting operation), image stabilization at the time of photographing, game control, and inertial navigation.
The pressure sensor 413 may be disposed on a side bezel of the terminal 400 and/or a lower layer of the touch display screen 405. When the pressure sensor 413 is disposed at a side frame of the terminal 400, a user's grip signal to the terminal 400 can be detected, and left-right hand recognition or shortcut operation can be performed according to the grip signal. When the pressure sensor 413 is disposed at the lower layer of the touch display screen 405, the operability control on the UI interface can be controlled according to the pressure operation of the user on the touch display screen 405. The operability control comprises at least one of a button control, a scroll bar control, an icon control and a menu control.
The fingerprint sensor 414 is used for collecting a fingerprint of the user to identify the identity of the user according to the collected fingerprint. Upon recognizing that the user's identity is a trusted identity, processor 401 authorizes the user to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying, and changing settings, etc. The fingerprint sensor 414 may be disposed on the front, back, or side of the terminal 400. When a physical key or vendor Logo is provided on the terminal 400, the fingerprint sensor 414 may be integrated with the physical key or vendor Logo.
The optical sensor 415 is used to collect the ambient light intensity. In one embodiment, the processor 401 may control the display brightness of the touch display screen 405 based on the ambient light intensity collected by the optical sensor 415. Specifically, when the ambient light intensity is high, the display brightness of the touch display screen 405 is increased; when the ambient light intensity is low, the display brightness of the touch display screen 405 is turned down. In another embodiment, the processor 401 may also dynamically adjust the shooting parameters of the camera assembly 406 according to the ambient light intensity collected by the optical sensor 415.
A proximity sensor 416, also known as a distance sensor, is typically disposed on the front side of the terminal 400. The proximity sensor 416 is used to collect the distance between the user and the front surface of the terminal 400. In one embodiment, when the proximity sensor 416 detects that the distance between the user and the front surface of the terminal 400 gradually decreases, the processor 401 controls the touch display screen 405 to switch from the bright screen state to the dark screen state; when the proximity sensor 416 detects that the distance between the user and the front surface of the terminal 400 gradually becomes larger, the processor 401 controls the touch display screen 405 to switch from the breath screen state to the bright screen state.
Those skilled in the art will appreciate that the configuration shown in fig. 4 is not intended to be limiting of terminal 400 and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components may be used.
EXAMPLE five
In an exemplary embodiment, there is also provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements an electric vehicle insulation function verification method as provided by all inventive embodiments of the present application.
Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
Example six
In an exemplary embodiment, an application program product is also provided, which includes one or more instructions executable by the processor 401 of the apparatus to perform the method for verifying the insulation function of an electric vehicle.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (10)
1. An electric vehicle insulation function verification method is characterized by comprising the following steps:
when a test request is received, obtaining a test mode and corresponding test parameters in the test request;
and formulating a test time sequence, and setting external input data of the main insulation resistor under test conditions under each time sequence.
And determining a function verification strategy according to the test time sequence.
2. The method for verifying the insulation function of the electric vehicle according to claim 1, wherein when a test request is received, the test mode and corresponding test parameters in the test request are obtained, and the method further comprises the following steps: the device is connected to a vehicle direct current charging port through an interface, carries out state self-checking and takes corresponding measures according to self-checking results.
3. The method for verifying the insulation function of an electric vehicle according to claim 2,
when the test mode is an insulation alarm test, the test parameters include: the insulation alarm value range, the insulation release alarm value range and the threshold value allowed maximum deviation resistance value;
when the test mode is insulation accuracy test, the test parameters include: the lower limit value of the resistance range, the upper limit value of the resistance range, the testing step length and the maximum percentage of insulation collection errors.
4. The method for verifying the insulation function of the electric vehicle according to claim 3, wherein a test time sequence is formulated, external input data of the main insulation resistor in test conditions under each time sequence are set, and a vehicle related state is obtained and whether the test is normal or not is judged, and the method comprises the following steps:
acquiring a battery pack state and a current vehicle insulation state, and taking corresponding measures according to the battery pack state and the current vehicle insulation state;
acquiring the working state of a vehicle charging interface charging device relay, and taking corresponding measures according to the working state of the vehicle charging interface charging device relay;
and acquiring the hardware version of the BMS software version.
5. The method for verifying the insulation function of the electric vehicle according to claim 4, wherein when the test mode is an insulation alarm test, the step of formulating a test time sequence and setting external input data of the main insulation resistor in test conditions under each time sequence comprises the steps of:
Transmitting a command to close a charging relay to the vehicle BMS through a diagnostic IO control function;
acquiring the voltage of a battery pack through a high-voltage sampling circuit in the device;
obtaining an insulation alarm condition and a warning relieving condition according to the voltage of the battery pack and test parameters input by a user;
setting main insulation resistance external input data according to the insulation alarm condition and the alarm relieving condition, wherein the main insulation resistance external input data comprises: the main positive insulation resistance inputs data externally and the main negative insulation resistance inputs data externally.
6. The method for verifying the insulation function of the electric vehicle according to claim 5, wherein when the test mode is an insulation precision test, the step of formulating a test time sequence and setting external input data of the main insulation resistor under test conditions in each time sequence comprises:
obtaining all preprocessed test points according to the test range and the test step length of the test parameters input by the user;
obtaining a processed test point through safety risk analysis processing according to the preprocessed test point;
and setting external input data of the main insulation resistor through the processed test points.
7. The method for verifying the insulation function of the electric vehicle as recited in claim 6, wherein the taking corresponding measures comprises: the method comprises the following steps of test execution, test result display, completion prompt and test end generation of a test report, wherein the function verification strategy comprises the following steps: the method comprises the steps of executing a test, obtaining test data, displaying a test result, sending a disconnection instruction to a relay of the vehicle charging interface charging device and generating a test report.
8. An electric vehicle insulation function verification device, comprising:
connecting device for connect the vehicle direct current interface that charges, connecting device adopts the direct current interface that charges of the general connecting device 3 rd part that national standard electric automobile conduction charges, and concrete pin includes:
the DC + end is a pin for connecting the main positive insulation resistor, the other end of the main positive insulation resistor is connected with the PE end, and the voltage of the battery pack is collected and input into the positive electrode;
the DC-end is a pin for connecting the main negative insulation resistor, the other end of the main negative insulation resistor is connected with the PE end, and the voltage of the battery pack is collected and input into the negative electrode;
the PE end is used for protecting and grounding and connecting the equipment ground wire and the vehicle low-voltage ground wire;
the S + end is an upper computer connecting end and is connected with the vehicle communication interface;
the S-end is an upper computer connecting end and is connected with the vehicle communication interface;
the CC1 end, the CC2 end, the A + end and the A-end are kept in an open circuit state when in use;
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a test mode and corresponding test parameters in a test request when the test request is received;
and the formulating unit is used for formulating a test time sequence and setting external input data of the main insulation resistor under test conditions under each time sequence.
And the execution unit is used for determining a function verification strategy according to the test time sequence.
9. A terminal, comprising:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the processor and the memory are respectively connected with an electric vehicle insulation function verification device according to claim 8, and the one or more processors are configured to:
an electric vehicle insulation function verification method according to any one of claims 1 to 7 is performed.
10. A non-transitory computer readable storage medium, wherein instructions in the storage medium, when executed by a processor of a terminal, enable the terminal to perform a method of verifying an insulation function of an electric vehicle as claimed in any one of claims 1 to 7.
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